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e075ae69 | 1 | /* Subroutines used for code generation on IA-32. |
07933f72 GS |
2 | Copyright (C) 1988, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
3 | 2002 Free Software Foundation, Inc. | |
2a2ab3f9 JVA |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
97aadbb9 | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
0f290768 | 20 | Boston, MA 02111-1307, USA. */ |
2a2ab3f9 | 21 | |
2a2ab3f9 | 22 | #include "config.h" |
bb5177ac | 23 | #include "system.h" |
2a2ab3f9 | 24 | #include "rtl.h" |
6baf1cc8 BS |
25 | #include "tree.h" |
26 | #include "tm_p.h" | |
2a2ab3f9 JVA |
27 | #include "regs.h" |
28 | #include "hard-reg-set.h" | |
29 | #include "real.h" | |
30 | #include "insn-config.h" | |
31 | #include "conditions.h" | |
2a2ab3f9 JVA |
32 | #include "output.h" |
33 | #include "insn-attr.h" | |
2a2ab3f9 | 34 | #include "flags.h" |
a8ffcc81 | 35 | #include "except.h" |
ecbc4695 | 36 | #include "function.h" |
00c79232 | 37 | #include "recog.h" |
ced8dd8c | 38 | #include "expr.h" |
e78d8e51 | 39 | #include "optabs.h" |
f103890b | 40 | #include "toplev.h" |
e075ae69 | 41 | #include "basic-block.h" |
1526a060 | 42 | #include "ggc.h" |
672a6f42 NB |
43 | #include "target.h" |
44 | #include "target-def.h" | |
2a2ab3f9 | 45 | |
8dfe5673 | 46 | #ifndef CHECK_STACK_LIMIT |
07933f72 | 47 | #define CHECK_STACK_LIMIT (-1) |
8dfe5673 RK |
48 | #endif |
49 | ||
2ab0437e | 50 | /* Processor costs (relative to an add) */ |
8b60264b | 51 | static const |
2ab0437e JH |
52 | struct processor_costs size_cost = { /* costs for tunning for size */ |
53 | 2, /* cost of an add instruction */ | |
54 | 3, /* cost of a lea instruction */ | |
55 | 2, /* variable shift costs */ | |
56 | 3, /* constant shift costs */ | |
57 | 3, /* cost of starting a multiply */ | |
58 | 0, /* cost of multiply per each bit set */ | |
59 | 3, /* cost of a divide/mod */ | |
44cf5b6a JH |
60 | 3, /* cost of movsx */ |
61 | 3, /* cost of movzx */ | |
2ab0437e JH |
62 | 0, /* "large" insn */ |
63 | 2, /* MOVE_RATIO */ | |
64 | 2, /* cost for loading QImode using movzbl */ | |
65 | {2, 2, 2}, /* cost of loading integer registers | |
66 | in QImode, HImode and SImode. | |
67 | Relative to reg-reg move (2). */ | |
68 | {2, 2, 2}, /* cost of storing integer registers */ | |
69 | 2, /* cost of reg,reg fld/fst */ | |
70 | {2, 2, 2}, /* cost of loading fp registers | |
71 | in SFmode, DFmode and XFmode */ | |
72 | {2, 2, 2}, /* cost of loading integer registers */ | |
73 | 3, /* cost of moving MMX register */ | |
74 | {3, 3}, /* cost of loading MMX registers | |
75 | in SImode and DImode */ | |
76 | {3, 3}, /* cost of storing MMX registers | |
77 | in SImode and DImode */ | |
78 | 3, /* cost of moving SSE register */ | |
79 | {3, 3, 3}, /* cost of loading SSE registers | |
80 | in SImode, DImode and TImode */ | |
81 | {3, 3, 3}, /* cost of storing SSE registers | |
82 | in SImode, DImode and TImode */ | |
83 | 3, /* MMX or SSE register to integer */ | |
f4365627 JH |
84 | 0, /* size of prefetch block */ |
85 | 0, /* number of parallel prefetches */ | |
2ab0437e | 86 | }; |
32b5b1aa | 87 | /* Processor costs (relative to an add) */ |
8b60264b | 88 | static const |
32b5b1aa | 89 | struct processor_costs i386_cost = { /* 386 specific costs */ |
e9a25f70 | 90 | 1, /* cost of an add instruction */ |
32b5b1aa SC |
91 | 1, /* cost of a lea instruction */ |
92 | 3, /* variable shift costs */ | |
93 | 2, /* constant shift costs */ | |
94 | 6, /* cost of starting a multiply */ | |
95 | 1, /* cost of multiply per each bit set */ | |
e075ae69 | 96 | 23, /* cost of a divide/mod */ |
44cf5b6a JH |
97 | 3, /* cost of movsx */ |
98 | 2, /* cost of movzx */ | |
96e7ae40 | 99 | 15, /* "large" insn */ |
e2e52e1b | 100 | 3, /* MOVE_RATIO */ |
7c6b971d | 101 | 4, /* cost for loading QImode using movzbl */ |
96e7ae40 JH |
102 | {2, 4, 2}, /* cost of loading integer registers |
103 | in QImode, HImode and SImode. | |
0f290768 | 104 | Relative to reg-reg move (2). */ |
96e7ae40 JH |
105 | {2, 4, 2}, /* cost of storing integer registers */ |
106 | 2, /* cost of reg,reg fld/fst */ | |
107 | {8, 8, 8}, /* cost of loading fp registers | |
108 | in SFmode, DFmode and XFmode */ | |
fa79946e JH |
109 | {8, 8, 8}, /* cost of loading integer registers */ |
110 | 2, /* cost of moving MMX register */ | |
111 | {4, 8}, /* cost of loading MMX registers | |
112 | in SImode and DImode */ | |
113 | {4, 8}, /* cost of storing MMX registers | |
114 | in SImode and DImode */ | |
115 | 2, /* cost of moving SSE register */ | |
116 | {4, 8, 16}, /* cost of loading SSE registers | |
117 | in SImode, DImode and TImode */ | |
118 | {4, 8, 16}, /* cost of storing SSE registers | |
119 | in SImode, DImode and TImode */ | |
120 | 3, /* MMX or SSE register to integer */ | |
f4365627 JH |
121 | 0, /* size of prefetch block */ |
122 | 0, /* number of parallel prefetches */ | |
32b5b1aa SC |
123 | }; |
124 | ||
8b60264b | 125 | static const |
32b5b1aa SC |
126 | struct processor_costs i486_cost = { /* 486 specific costs */ |
127 | 1, /* cost of an add instruction */ | |
128 | 1, /* cost of a lea instruction */ | |
129 | 3, /* variable shift costs */ | |
130 | 2, /* constant shift costs */ | |
131 | 12, /* cost of starting a multiply */ | |
132 | 1, /* cost of multiply per each bit set */ | |
e075ae69 | 133 | 40, /* cost of a divide/mod */ |
44cf5b6a JH |
134 | 3, /* cost of movsx */ |
135 | 2, /* cost of movzx */ | |
96e7ae40 | 136 | 15, /* "large" insn */ |
e2e52e1b | 137 | 3, /* MOVE_RATIO */ |
7c6b971d | 138 | 4, /* cost for loading QImode using movzbl */ |
96e7ae40 JH |
139 | {2, 4, 2}, /* cost of loading integer registers |
140 | in QImode, HImode and SImode. | |
0f290768 | 141 | Relative to reg-reg move (2). */ |
96e7ae40 JH |
142 | {2, 4, 2}, /* cost of storing integer registers */ |
143 | 2, /* cost of reg,reg fld/fst */ | |
144 | {8, 8, 8}, /* cost of loading fp registers | |
145 | in SFmode, DFmode and XFmode */ | |
fa79946e JH |
146 | {8, 8, 8}, /* cost of loading integer registers */ |
147 | 2, /* cost of moving MMX register */ | |
148 | {4, 8}, /* cost of loading MMX registers | |
149 | in SImode and DImode */ | |
150 | {4, 8}, /* cost of storing MMX registers | |
151 | in SImode and DImode */ | |
152 | 2, /* cost of moving SSE register */ | |
153 | {4, 8, 16}, /* cost of loading SSE registers | |
154 | in SImode, DImode and TImode */ | |
155 | {4, 8, 16}, /* cost of storing SSE registers | |
156 | in SImode, DImode and TImode */ | |
f4365627 JH |
157 | 3, /* MMX or SSE register to integer */ |
158 | 0, /* size of prefetch block */ | |
159 | 0, /* number of parallel prefetches */ | |
32b5b1aa SC |
160 | }; |
161 | ||
8b60264b | 162 | static const |
e5cb57e8 | 163 | struct processor_costs pentium_cost = { |
32b5b1aa SC |
164 | 1, /* cost of an add instruction */ |
165 | 1, /* cost of a lea instruction */ | |
856b07a1 | 166 | 4, /* variable shift costs */ |
e5cb57e8 | 167 | 1, /* constant shift costs */ |
856b07a1 SC |
168 | 11, /* cost of starting a multiply */ |
169 | 0, /* cost of multiply per each bit set */ | |
e075ae69 | 170 | 25, /* cost of a divide/mod */ |
44cf5b6a JH |
171 | 3, /* cost of movsx */ |
172 | 2, /* cost of movzx */ | |
96e7ae40 | 173 | 8, /* "large" insn */ |
e2e52e1b | 174 | 6, /* MOVE_RATIO */ |
7c6b971d | 175 | 6, /* cost for loading QImode using movzbl */ |
96e7ae40 JH |
176 | {2, 4, 2}, /* cost of loading integer registers |
177 | in QImode, HImode and SImode. | |
0f290768 | 178 | Relative to reg-reg move (2). */ |
96e7ae40 JH |
179 | {2, 4, 2}, /* cost of storing integer registers */ |
180 | 2, /* cost of reg,reg fld/fst */ | |
181 | {2, 2, 6}, /* cost of loading fp registers | |
182 | in SFmode, DFmode and XFmode */ | |
fa79946e JH |
183 | {4, 4, 6}, /* cost of loading integer registers */ |
184 | 8, /* cost of moving MMX register */ | |
185 | {8, 8}, /* cost of loading MMX registers | |
186 | in SImode and DImode */ | |
187 | {8, 8}, /* cost of storing MMX registers | |
188 | in SImode and DImode */ | |
189 | 2, /* cost of moving SSE register */ | |
190 | {4, 8, 16}, /* cost of loading SSE registers | |
191 | in SImode, DImode and TImode */ | |
192 | {4, 8, 16}, /* cost of storing SSE registers | |
193 | in SImode, DImode and TImode */ | |
f4365627 JH |
194 | 3, /* MMX or SSE register to integer */ |
195 | 0, /* size of prefetch block */ | |
196 | 0, /* number of parallel prefetches */ | |
32b5b1aa SC |
197 | }; |
198 | ||
8b60264b | 199 | static const |
856b07a1 SC |
200 | struct processor_costs pentiumpro_cost = { |
201 | 1, /* cost of an add instruction */ | |
202 | 1, /* cost of a lea instruction */ | |
e075ae69 | 203 | 1, /* variable shift costs */ |
856b07a1 | 204 | 1, /* constant shift costs */ |
369e59b1 | 205 | 4, /* cost of starting a multiply */ |
856b07a1 | 206 | 0, /* cost of multiply per each bit set */ |
e075ae69 | 207 | 17, /* cost of a divide/mod */ |
44cf5b6a JH |
208 | 1, /* cost of movsx */ |
209 | 1, /* cost of movzx */ | |
96e7ae40 | 210 | 8, /* "large" insn */ |
e2e52e1b | 211 | 6, /* MOVE_RATIO */ |
7c6b971d | 212 | 2, /* cost for loading QImode using movzbl */ |
96e7ae40 JH |
213 | {4, 4, 4}, /* cost of loading integer registers |
214 | in QImode, HImode and SImode. | |
0f290768 | 215 | Relative to reg-reg move (2). */ |
96e7ae40 JH |
216 | {2, 2, 2}, /* cost of storing integer registers */ |
217 | 2, /* cost of reg,reg fld/fst */ | |
218 | {2, 2, 6}, /* cost of loading fp registers | |
219 | in SFmode, DFmode and XFmode */ | |
fa79946e JH |
220 | {4, 4, 6}, /* cost of loading integer registers */ |
221 | 2, /* cost of moving MMX register */ | |
222 | {2, 2}, /* cost of loading MMX registers | |
223 | in SImode and DImode */ | |
224 | {2, 2}, /* cost of storing MMX registers | |
225 | in SImode and DImode */ | |
226 | 2, /* cost of moving SSE register */ | |
227 | {2, 2, 8}, /* cost of loading SSE registers | |
228 | in SImode, DImode and TImode */ | |
229 | {2, 2, 8}, /* cost of storing SSE registers | |
230 | in SImode, DImode and TImode */ | |
f4365627 JH |
231 | 3, /* MMX or SSE register to integer */ |
232 | 32, /* size of prefetch block */ | |
233 | 6, /* number of parallel prefetches */ | |
856b07a1 SC |
234 | }; |
235 | ||
8b60264b | 236 | static const |
a269a03c JC |
237 | struct processor_costs k6_cost = { |
238 | 1, /* cost of an add instruction */ | |
e075ae69 | 239 | 2, /* cost of a lea instruction */ |
a269a03c JC |
240 | 1, /* variable shift costs */ |
241 | 1, /* constant shift costs */ | |
73fe76e4 | 242 | 3, /* cost of starting a multiply */ |
a269a03c | 243 | 0, /* cost of multiply per each bit set */ |
e075ae69 | 244 | 18, /* cost of a divide/mod */ |
44cf5b6a JH |
245 | 2, /* cost of movsx */ |
246 | 2, /* cost of movzx */ | |
96e7ae40 | 247 | 8, /* "large" insn */ |
e2e52e1b | 248 | 4, /* MOVE_RATIO */ |
7c6b971d | 249 | 3, /* cost for loading QImode using movzbl */ |
96e7ae40 JH |
250 | {4, 5, 4}, /* cost of loading integer registers |
251 | in QImode, HImode and SImode. | |
0f290768 | 252 | Relative to reg-reg move (2). */ |
96e7ae40 JH |
253 | {2, 3, 2}, /* cost of storing integer registers */ |
254 | 4, /* cost of reg,reg fld/fst */ | |
255 | {6, 6, 6}, /* cost of loading fp registers | |
256 | in SFmode, DFmode and XFmode */ | |
fa79946e JH |
257 | {4, 4, 4}, /* cost of loading integer registers */ |
258 | 2, /* cost of moving MMX register */ | |
259 | {2, 2}, /* cost of loading MMX registers | |
260 | in SImode and DImode */ | |
261 | {2, 2}, /* cost of storing MMX registers | |
262 | in SImode and DImode */ | |
263 | 2, /* cost of moving SSE register */ | |
264 | {2, 2, 8}, /* cost of loading SSE registers | |
265 | in SImode, DImode and TImode */ | |
266 | {2, 2, 8}, /* cost of storing SSE registers | |
267 | in SImode, DImode and TImode */ | |
f4365627 JH |
268 | 6, /* MMX or SSE register to integer */ |
269 | 32, /* size of prefetch block */ | |
270 | 1, /* number of parallel prefetches */ | |
a269a03c JC |
271 | }; |
272 | ||
8b60264b | 273 | static const |
309ada50 JH |
274 | struct processor_costs athlon_cost = { |
275 | 1, /* cost of an add instruction */ | |
0b5107cf | 276 | 2, /* cost of a lea instruction */ |
309ada50 JH |
277 | 1, /* variable shift costs */ |
278 | 1, /* constant shift costs */ | |
279 | 5, /* cost of starting a multiply */ | |
280 | 0, /* cost of multiply per each bit set */ | |
0b5107cf | 281 | 42, /* cost of a divide/mod */ |
44cf5b6a JH |
282 | 1, /* cost of movsx */ |
283 | 1, /* cost of movzx */ | |
309ada50 | 284 | 8, /* "large" insn */ |
e2e52e1b | 285 | 9, /* MOVE_RATIO */ |
309ada50 JH |
286 | 4, /* cost for loading QImode using movzbl */ |
287 | {4, 5, 4}, /* cost of loading integer registers | |
288 | in QImode, HImode and SImode. | |
0f290768 | 289 | Relative to reg-reg move (2). */ |
309ada50 JH |
290 | {2, 3, 2}, /* cost of storing integer registers */ |
291 | 4, /* cost of reg,reg fld/fst */ | |
0b5107cf | 292 | {6, 6, 20}, /* cost of loading fp registers |
309ada50 | 293 | in SFmode, DFmode and XFmode */ |
fa79946e JH |
294 | {4, 4, 16}, /* cost of loading integer registers */ |
295 | 2, /* cost of moving MMX register */ | |
296 | {2, 2}, /* cost of loading MMX registers | |
297 | in SImode and DImode */ | |
298 | {2, 2}, /* cost of storing MMX registers | |
299 | in SImode and DImode */ | |
300 | 2, /* cost of moving SSE register */ | |
301 | {2, 2, 8}, /* cost of loading SSE registers | |
302 | in SImode, DImode and TImode */ | |
303 | {2, 2, 8}, /* cost of storing SSE registers | |
304 | in SImode, DImode and TImode */ | |
f4365627 JH |
305 | 6, /* MMX or SSE register to integer */ |
306 | 64, /* size of prefetch block */ | |
307 | 6, /* number of parallel prefetches */ | |
309ada50 JH |
308 | }; |
309 | ||
8b60264b | 310 | static const |
b4e89e2d JH |
311 | struct processor_costs pentium4_cost = { |
312 | 1, /* cost of an add instruction */ | |
313 | 1, /* cost of a lea instruction */ | |
314 | 8, /* variable shift costs */ | |
315 | 8, /* constant shift costs */ | |
316 | 30, /* cost of starting a multiply */ | |
317 | 0, /* cost of multiply per each bit set */ | |
318 | 112, /* cost of a divide/mod */ | |
44cf5b6a JH |
319 | 1, /* cost of movsx */ |
320 | 1, /* cost of movzx */ | |
b4e89e2d JH |
321 | 16, /* "large" insn */ |
322 | 6, /* MOVE_RATIO */ | |
323 | 2, /* cost for loading QImode using movzbl */ | |
324 | {4, 5, 4}, /* cost of loading integer registers | |
325 | in QImode, HImode and SImode. | |
326 | Relative to reg-reg move (2). */ | |
327 | {2, 3, 2}, /* cost of storing integer registers */ | |
328 | 2, /* cost of reg,reg fld/fst */ | |
329 | {2, 2, 6}, /* cost of loading fp registers | |
330 | in SFmode, DFmode and XFmode */ | |
331 | {4, 4, 6}, /* cost of loading integer registers */ | |
332 | 2, /* cost of moving MMX register */ | |
333 | {2, 2}, /* cost of loading MMX registers | |
334 | in SImode and DImode */ | |
335 | {2, 2}, /* cost of storing MMX registers | |
336 | in SImode and DImode */ | |
337 | 12, /* cost of moving SSE register */ | |
338 | {12, 12, 12}, /* cost of loading SSE registers | |
339 | in SImode, DImode and TImode */ | |
340 | {2, 2, 8}, /* cost of storing SSE registers | |
341 | in SImode, DImode and TImode */ | |
342 | 10, /* MMX or SSE register to integer */ | |
f4365627 JH |
343 | 64, /* size of prefetch block */ |
344 | 6, /* number of parallel prefetches */ | |
b4e89e2d JH |
345 | }; |
346 | ||
8b60264b | 347 | const struct processor_costs *ix86_cost = &pentium_cost; |
32b5b1aa | 348 | |
a269a03c JC |
349 | /* Processor feature/optimization bitmasks. */ |
350 | #define m_386 (1<<PROCESSOR_I386) | |
351 | #define m_486 (1<<PROCESSOR_I486) | |
352 | #define m_PENT (1<<PROCESSOR_PENTIUM) | |
353 | #define m_PPRO (1<<PROCESSOR_PENTIUMPRO) | |
354 | #define m_K6 (1<<PROCESSOR_K6) | |
309ada50 | 355 | #define m_ATHLON (1<<PROCESSOR_ATHLON) |
b4e89e2d | 356 | #define m_PENT4 (1<<PROCESSOR_PENTIUM4) |
a269a03c | 357 | |
309ada50 | 358 | const int x86_use_leave = m_386 | m_K6 | m_ATHLON; |
b4e89e2d | 359 | const int x86_push_memory = m_386 | m_K6 | m_ATHLON | m_PENT4; |
a269a03c | 360 | const int x86_zero_extend_with_and = m_486 | m_PENT; |
b4e89e2d | 361 | const int x86_movx = m_ATHLON | m_PPRO | m_PENT4 /* m_386 | m_K6 */; |
e075ae69 | 362 | const int x86_double_with_add = ~m_386; |
a269a03c | 363 | const int x86_use_bit_test = m_386; |
e2e52e1b | 364 | const int x86_unroll_strlen = m_486 | m_PENT | m_PPRO | m_ATHLON | m_K6; |
b4e89e2d | 365 | const int x86_cmove = m_PPRO | m_ATHLON | m_PENT4; |
47f339cf | 366 | const int x86_3dnow_a = m_ATHLON; |
b4e89e2d | 367 | const int x86_deep_branch = m_PPRO | m_K6 | m_ATHLON | m_PENT4; |
ef6257cd | 368 | const int x86_branch_hints = m_PENT4; |
b4e89e2d | 369 | const int x86_use_sahf = m_PPRO | m_K6 | m_PENT4; |
e075ae69 RH |
370 | const int x86_partial_reg_stall = m_PPRO; |
371 | const int x86_use_loop = m_K6; | |
309ada50 | 372 | const int x86_use_fiop = ~(m_PPRO | m_ATHLON | m_PENT); |
e075ae69 RH |
373 | const int x86_use_mov0 = m_K6; |
374 | const int x86_use_cltd = ~(m_PENT | m_K6); | |
375 | const int x86_read_modify_write = ~m_PENT; | |
376 | const int x86_read_modify = ~(m_PENT | m_PPRO); | |
377 | const int x86_split_long_moves = m_PPRO; | |
e9e80858 | 378 | const int x86_promote_QImode = m_K6 | m_PENT | m_386 | m_486; |
b4e89e2d | 379 | const int x86_single_stringop = m_386 | m_PENT4; |
d9f32422 JH |
380 | const int x86_qimode_math = ~(0); |
381 | const int x86_promote_qi_regs = 0; | |
382 | const int x86_himode_math = ~(m_PPRO); | |
383 | const int x86_promote_hi_regs = m_PPRO; | |
b4e89e2d JH |
384 | const int x86_sub_esp_4 = m_ATHLON | m_PPRO | m_PENT4; |
385 | const int x86_sub_esp_8 = m_ATHLON | m_PPRO | m_386 | m_486 | m_PENT4; | |
386 | const int x86_add_esp_4 = m_ATHLON | m_K6 | m_PENT4; | |
387 | const int x86_add_esp_8 = m_ATHLON | m_PPRO | m_K6 | m_386 | m_486 | m_PENT4; | |
388 | const int x86_integer_DFmode_moves = ~(m_ATHLON | m_PENT4); | |
389 | const int x86_partial_reg_dependency = m_ATHLON | m_PENT4; | |
390 | const int x86_memory_mismatch_stall = m_ATHLON | m_PENT4; | |
c6036a37 JH |
391 | const int x86_accumulate_outgoing_args = m_ATHLON | m_PENT4 | m_PPRO; |
392 | const int x86_prologue_using_move = m_ATHLON | m_PENT4 | m_PPRO; | |
393 | const int x86_epilogue_using_move = m_ATHLON | m_PENT4 | m_PPRO; | |
b972dd02 | 394 | const int x86_decompose_lea = m_PENT4; |
a269a03c | 395 | |
6ab16dd9 JH |
396 | /* In case the avreage insn count for single function invocation is |
397 | lower than this constant, emit fast (but longer) prologue and | |
398 | epilogue code. */ | |
399 | #define FAST_PROLOGUE_INSN_COUNT 30 | |
400 | /* Set by prologue expander and used by epilogue expander to determine | |
401 | the style used. */ | |
402 | static int use_fast_prologue_epilogue; | |
403 | ||
07933f72 | 404 | #define AT_BP(MODE) (gen_rtx_MEM ((MODE), hard_frame_pointer_rtx)) |
2a2ab3f9 | 405 | |
83182544 KG |
406 | static const char *const hi_reg_name[] = HI_REGISTER_NAMES; /* names for 16 bit regs */ |
407 | static const char *const qi_reg_name[] = QI_REGISTER_NAMES; /* names for 8 bit regs (low) */ | |
408 | static const char *const qi_high_reg_name[] = QI_HIGH_REGISTER_NAMES; /* names for 8 bit regs (high) */ | |
4c0d89b5 RS |
409 | |
410 | /* Array of the smallest class containing reg number REGNO, indexed by | |
0f290768 | 411 | REGNO. Used by REGNO_REG_CLASS in i386.h. */ |
4c0d89b5 | 412 | |
e075ae69 | 413 | enum reg_class const regclass_map[FIRST_PSEUDO_REGISTER] = |
4c0d89b5 RS |
414 | { |
415 | /* ax, dx, cx, bx */ | |
ab408a86 | 416 | AREG, DREG, CREG, BREG, |
4c0d89b5 | 417 | /* si, di, bp, sp */ |
e075ae69 | 418 | SIREG, DIREG, NON_Q_REGS, NON_Q_REGS, |
4c0d89b5 RS |
419 | /* FP registers */ |
420 | FP_TOP_REG, FP_SECOND_REG, FLOAT_REGS, FLOAT_REGS, | |
79325812 | 421 | FLOAT_REGS, FLOAT_REGS, FLOAT_REGS, FLOAT_REGS, |
4c0d89b5 | 422 | /* arg pointer */ |
83774849 | 423 | NON_Q_REGS, |
564d80f4 | 424 | /* flags, fpsr, dirflag, frame */ |
a7180f70 BS |
425 | NO_REGS, NO_REGS, NO_REGS, NON_Q_REGS, |
426 | SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, | |
427 | SSE_REGS, SSE_REGS, | |
428 | MMX_REGS, MMX_REGS, MMX_REGS, MMX_REGS, MMX_REGS, MMX_REGS, | |
3d117b30 JH |
429 | MMX_REGS, MMX_REGS, |
430 | NON_Q_REGS, NON_Q_REGS, NON_Q_REGS, NON_Q_REGS, | |
431 | NON_Q_REGS, NON_Q_REGS, NON_Q_REGS, NON_Q_REGS, | |
432 | SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, SSE_REGS, | |
433 | SSE_REGS, SSE_REGS, | |
4c0d89b5 | 434 | }; |
c572e5ba | 435 | |
3d117b30 | 436 | /* The "default" register map used in 32bit mode. */ |
83774849 | 437 | |
0f290768 | 438 | int const dbx_register_map[FIRST_PSEUDO_REGISTER] = |
83774849 RH |
439 | { |
440 | 0, 2, 1, 3, 6, 7, 4, 5, /* general regs */ | |
441 | 12, 13, 14, 15, 16, 17, 18, 19, /* fp regs */ | |
3d117b30 | 442 | -1, -1, -1, -1, -1, /* arg, flags, fpsr, dir, frame */ |
a7180f70 BS |
443 | 21, 22, 23, 24, 25, 26, 27, 28, /* SSE */ |
444 | 29, 30, 31, 32, 33, 34, 35, 36, /* MMX */ | |
3d117b30 JH |
445 | -1, -1, -1, -1, -1, -1, -1, -1, /* extended integer registers */ |
446 | -1, -1, -1, -1, -1, -1, -1, -1, /* extended SSE registers */ | |
83774849 RH |
447 | }; |
448 | ||
07933f72 | 449 | static int const x86_64_int_parameter_registers[6] = {5 /*RDI*/, 4 /*RSI*/, |
53c17031 JH |
450 | 1 /*RDX*/, 2 /*RCX*/, |
451 | FIRST_REX_INT_REG /*R8 */, | |
452 | FIRST_REX_INT_REG + 1 /*R9 */}; | |
07933f72 | 453 | static int const x86_64_int_return_registers[4] = {0 /*RAX*/, 1 /*RDI*/, 5, 4}; |
53c17031 | 454 | |
0f7fa3d0 JH |
455 | /* The "default" register map used in 64bit mode. */ |
456 | int const dbx64_register_map[FIRST_PSEUDO_REGISTER] = | |
457 | { | |
458 | 0, 1, 2, 3, 4, 5, 6, 7, /* general regs */ | |
459 | 33, 34, 35, 36, 37, 38, 39, 40 /* fp regs */ | |
460 | -1, -1, -1, -1, -1, /* arg, flags, fpsr, dir, frame */ | |
461 | 17, 18, 19, 20, 21, 22, 23, 24, /* SSE */ | |
462 | 41, 42, 43, 44, 45, 46, 47, 48, /* MMX */ | |
463 | 8,9,10,11,12,13,14,15, /* extended integer registers */ | |
464 | 25, 26, 27, 28, 29, 30, 31, 32, /* extended SSE registers */ | |
465 | }; | |
466 | ||
83774849 RH |
467 | /* Define the register numbers to be used in Dwarf debugging information. |
468 | The SVR4 reference port C compiler uses the following register numbers | |
469 | in its Dwarf output code: | |
470 | 0 for %eax (gcc regno = 0) | |
471 | 1 for %ecx (gcc regno = 2) | |
472 | 2 for %edx (gcc regno = 1) | |
473 | 3 for %ebx (gcc regno = 3) | |
474 | 4 for %esp (gcc regno = 7) | |
475 | 5 for %ebp (gcc regno = 6) | |
476 | 6 for %esi (gcc regno = 4) | |
477 | 7 for %edi (gcc regno = 5) | |
478 | The following three DWARF register numbers are never generated by | |
479 | the SVR4 C compiler or by the GNU compilers, but SDB on x86/svr4 | |
480 | believes these numbers have these meanings. | |
481 | 8 for %eip (no gcc equivalent) | |
482 | 9 for %eflags (gcc regno = 17) | |
483 | 10 for %trapno (no gcc equivalent) | |
484 | It is not at all clear how we should number the FP stack registers | |
485 | for the x86 architecture. If the version of SDB on x86/svr4 were | |
486 | a bit less brain dead with respect to floating-point then we would | |
487 | have a precedent to follow with respect to DWARF register numbers | |
488 | for x86 FP registers, but the SDB on x86/svr4 is so completely | |
489 | broken with respect to FP registers that it is hardly worth thinking | |
490 | of it as something to strive for compatibility with. | |
491 | The version of x86/svr4 SDB I have at the moment does (partially) | |
492 | seem to believe that DWARF register number 11 is associated with | |
493 | the x86 register %st(0), but that's about all. Higher DWARF | |
494 | register numbers don't seem to be associated with anything in | |
495 | particular, and even for DWARF regno 11, SDB only seems to under- | |
496 | stand that it should say that a variable lives in %st(0) (when | |
497 | asked via an `=' command) if we said it was in DWARF regno 11, | |
498 | but SDB still prints garbage when asked for the value of the | |
499 | variable in question (via a `/' command). | |
500 | (Also note that the labels SDB prints for various FP stack regs | |
501 | when doing an `x' command are all wrong.) | |
502 | Note that these problems generally don't affect the native SVR4 | |
503 | C compiler because it doesn't allow the use of -O with -g and | |
504 | because when it is *not* optimizing, it allocates a memory | |
505 | location for each floating-point variable, and the memory | |
506 | location is what gets described in the DWARF AT_location | |
507 | attribute for the variable in question. | |
508 | Regardless of the severe mental illness of the x86/svr4 SDB, we | |
509 | do something sensible here and we use the following DWARF | |
510 | register numbers. Note that these are all stack-top-relative | |
511 | numbers. | |
512 | 11 for %st(0) (gcc regno = 8) | |
513 | 12 for %st(1) (gcc regno = 9) | |
514 | 13 for %st(2) (gcc regno = 10) | |
515 | 14 for %st(3) (gcc regno = 11) | |
516 | 15 for %st(4) (gcc regno = 12) | |
517 | 16 for %st(5) (gcc regno = 13) | |
518 | 17 for %st(6) (gcc regno = 14) | |
519 | 18 for %st(7) (gcc regno = 15) | |
520 | */ | |
0f290768 | 521 | int const svr4_dbx_register_map[FIRST_PSEUDO_REGISTER] = |
83774849 RH |
522 | { |
523 | 0, 2, 1, 3, 6, 7, 5, 4, /* general regs */ | |
524 | 11, 12, 13, 14, 15, 16, 17, 18, /* fp regs */ | |
3f3f2124 | 525 | -1, 9, -1, -1, -1, /* arg, flags, fpsr, dir, frame */ |
a7180f70 BS |
526 | 21, 22, 23, 24, 25, 26, 27, 28, /* SSE registers */ |
527 | 29, 30, 31, 32, 33, 34, 35, 36, /* MMX registers */ | |
3f3f2124 JH |
528 | -1, -1, -1, -1, -1, -1, -1, -1, /* extemded integer registers */ |
529 | -1, -1, -1, -1, -1, -1, -1, -1, /* extemded SSE registers */ | |
83774849 RH |
530 | }; |
531 | ||
c572e5ba JVA |
532 | /* Test and compare insns in i386.md store the information needed to |
533 | generate branch and scc insns here. */ | |
534 | ||
07933f72 GS |
535 | rtx ix86_compare_op0 = NULL_RTX; |
536 | rtx ix86_compare_op1 = NULL_RTX; | |
f5316dfe | 537 | |
7a2e09f4 | 538 | #define MAX_386_STACK_LOCALS 3 |
8362f420 JH |
539 | /* Size of the register save area. */ |
540 | #define X86_64_VARARGS_SIZE (REGPARM_MAX * UNITS_PER_WORD + SSE_REGPARM_MAX * 16) | |
36edd3cc BS |
541 | |
542 | /* Define the structure for the machine field in struct function. */ | |
543 | struct machine_function | |
544 | { | |
545 | rtx stack_locals[(int) MAX_MACHINE_MODE][MAX_386_STACK_LOCALS]; | |
8362f420 | 546 | int save_varrargs_registers; |
6fca22eb | 547 | int accesses_prev_frame; |
36edd3cc BS |
548 | }; |
549 | ||
01d939e8 | 550 | #define ix86_stack_locals (cfun->machine->stack_locals) |
8362f420 | 551 | #define ix86_save_varrargs_registers (cfun->machine->save_varrargs_registers) |
36edd3cc | 552 | |
4dd2ac2c JH |
553 | /* Structure describing stack frame layout. |
554 | Stack grows downward: | |
555 | ||
556 | [arguments] | |
557 | <- ARG_POINTER | |
558 | saved pc | |
559 | ||
560 | saved frame pointer if frame_pointer_needed | |
561 | <- HARD_FRAME_POINTER | |
562 | [saved regs] | |
563 | ||
564 | [padding1] \ | |
565 | ) | |
566 | [va_arg registers] ( | |
567 | > to_allocate <- FRAME_POINTER | |
568 | [frame] ( | |
569 | ) | |
570 | [padding2] / | |
571 | */ | |
572 | struct ix86_frame | |
573 | { | |
574 | int nregs; | |
575 | int padding1; | |
8362f420 | 576 | int va_arg_size; |
4dd2ac2c JH |
577 | HOST_WIDE_INT frame; |
578 | int padding2; | |
579 | int outgoing_arguments_size; | |
8362f420 | 580 | int red_zone_size; |
4dd2ac2c JH |
581 | |
582 | HOST_WIDE_INT to_allocate; | |
583 | /* The offsets relative to ARG_POINTER. */ | |
584 | HOST_WIDE_INT frame_pointer_offset; | |
585 | HOST_WIDE_INT hard_frame_pointer_offset; | |
586 | HOST_WIDE_INT stack_pointer_offset; | |
587 | }; | |
588 | ||
c93e80a5 JH |
589 | /* Used to enable/disable debugging features. */ |
590 | const char *ix86_debug_arg_string, *ix86_debug_addr_string; | |
6189a572 JH |
591 | /* Code model option as passed by user. */ |
592 | const char *ix86_cmodel_string; | |
593 | /* Parsed value. */ | |
594 | enum cmodel ix86_cmodel; | |
80f33d06 GS |
595 | /* Asm dialect. */ |
596 | const char *ix86_asm_string; | |
597 | enum asm_dialect ix86_asm_dialect = ASM_ATT; | |
6189a572 | 598 | |
c8c5cb99 | 599 | /* which cpu are we scheduling for */ |
e42ea7f9 | 600 | enum processor_type ix86_cpu; |
c8c5cb99 | 601 | |
965f5423 JH |
602 | /* which unit we are generating floating point math for */ |
603 | enum fpmath_unit ix86_fpmath; | |
604 | ||
c8c5cb99 | 605 | /* which instruction set architecture to use. */ |
c942177e | 606 | int ix86_arch; |
c8c5cb99 SC |
607 | |
608 | /* Strings to hold which cpu and instruction set architecture to use. */ | |
9c23aa47 ZW |
609 | const char *ix86_cpu_string; /* for -mcpu=<xxx> */ |
610 | const char *ix86_arch_string; /* for -march=<xxx> */ | |
965f5423 | 611 | const char *ix86_fpmath_string; /* for -mfpmath=<xxx> */ |
c8c5cb99 | 612 | |
0f290768 | 613 | /* # of registers to use to pass arguments. */ |
e075ae69 | 614 | const char *ix86_regparm_string; |
e9a25f70 | 615 | |
f4365627 JH |
616 | /* true if sse prefetch instruction is not NOOP. */ |
617 | int x86_prefetch_sse; | |
618 | ||
e075ae69 RH |
619 | /* ix86_regparm_string as a number */ |
620 | int ix86_regparm; | |
e9a25f70 JL |
621 | |
622 | /* Alignment to use for loops and jumps: */ | |
623 | ||
0f290768 | 624 | /* Power of two alignment for loops. */ |
e075ae69 | 625 | const char *ix86_align_loops_string; |
e9a25f70 | 626 | |
0f290768 | 627 | /* Power of two alignment for non-loop jumps. */ |
e075ae69 | 628 | const char *ix86_align_jumps_string; |
e9a25f70 | 629 | |
3af4bd89 | 630 | /* Power of two alignment for stack boundary in bytes. */ |
e075ae69 | 631 | const char *ix86_preferred_stack_boundary_string; |
3af4bd89 JH |
632 | |
633 | /* Preferred alignment for stack boundary in bits. */ | |
e075ae69 | 634 | int ix86_preferred_stack_boundary; |
3af4bd89 | 635 | |
e9a25f70 | 636 | /* Values 1-5: see jump.c */ |
e075ae69 RH |
637 | int ix86_branch_cost; |
638 | const char *ix86_branch_cost_string; | |
e9a25f70 | 639 | |
0f290768 | 640 | /* Power of two alignment for functions. */ |
e075ae69 | 641 | const char *ix86_align_funcs_string; |
623fe810 RH |
642 | |
643 | /* Prefix built by ASM_GENERATE_INTERNAL_LABEL. */ | |
644 | static char internal_label_prefix[16]; | |
645 | static int internal_label_prefix_len; | |
e075ae69 | 646 | \f |
623fe810 | 647 | static int local_symbolic_operand PARAMS ((rtx, enum machine_mode)); |
f6da8bc3 KG |
648 | static void output_pic_addr_const PARAMS ((FILE *, rtx, int)); |
649 | static void put_condition_code PARAMS ((enum rtx_code, enum machine_mode, | |
e075ae69 | 650 | int, int, FILE *)); |
f6da8bc3 | 651 | static rtx ix86_expand_int_compare PARAMS ((enum rtx_code, rtx, rtx)); |
3a3677ff RH |
652 | static enum rtx_code ix86_prepare_fp_compare_args PARAMS ((enum rtx_code, |
653 | rtx *, rtx *)); | |
f6da8bc3 KG |
654 | static rtx gen_push PARAMS ((rtx)); |
655 | static int memory_address_length PARAMS ((rtx addr)); | |
656 | static int ix86_flags_dependant PARAMS ((rtx, rtx, enum attr_type)); | |
657 | static int ix86_agi_dependant PARAMS ((rtx, rtx, enum attr_type)); | |
658 | static int ix86_safe_length PARAMS ((rtx)); | |
659 | static enum attr_memory ix86_safe_memory PARAMS ((rtx)); | |
660 | static enum attr_pent_pair ix86_safe_pent_pair PARAMS ((rtx)); | |
661 | static enum attr_ppro_uops ix86_safe_ppro_uops PARAMS ((rtx)); | |
662 | static void ix86_dump_ppro_packet PARAMS ((FILE *)); | |
663 | static void ix86_reorder_insn PARAMS ((rtx *, rtx *)); | |
664 | static rtx * ix86_pent_find_pair PARAMS ((rtx *, rtx *, enum attr_pent_pair, | |
e075ae69 | 665 | rtx)); |
f6da8bc3 KG |
666 | static void ix86_init_machine_status PARAMS ((struct function *)); |
667 | static void ix86_mark_machine_status PARAMS ((struct function *)); | |
37b15744 | 668 | static void ix86_free_machine_status PARAMS ((struct function *)); |
2b589241 | 669 | static int ix86_split_to_parts PARAMS ((rtx, rtx *, enum machine_mode)); |
f6da8bc3 | 670 | static int ix86_safe_length_prefix PARAMS ((rtx)); |
0903fcab JH |
671 | static int ix86_nsaved_regs PARAMS((void)); |
672 | static void ix86_emit_save_regs PARAMS((void)); | |
c6036a37 | 673 | static void ix86_emit_save_regs_using_mov PARAMS ((rtx, HOST_WIDE_INT)); |
37a58036 | 674 | static void ix86_emit_restore_regs_using_mov PARAMS ((rtx, int, int)); |
0e4970d7 | 675 | static void ix86_set_move_mem_attrs_1 PARAMS ((rtx, rtx, rtx, rtx, rtx)); |
c6991660 KG |
676 | static void ix86_sched_reorder_pentium PARAMS((rtx *, rtx *)); |
677 | static void ix86_sched_reorder_ppro PARAMS((rtx *, rtx *)); | |
55efb413 | 678 | static HOST_WIDE_INT ix86_GOT_alias_set PARAMS ((void)); |
0945b39d | 679 | static void ix86_adjust_counter PARAMS ((rtx, HOST_WIDE_INT)); |
0945b39d JH |
680 | static rtx ix86_expand_aligntest PARAMS ((rtx, int)); |
681 | static void ix86_expand_strlensi_unroll_1 PARAMS ((rtx, rtx)); | |
c237e94a ZW |
682 | static int ix86_issue_rate PARAMS ((void)); |
683 | static int ix86_adjust_cost PARAMS ((rtx, rtx, rtx, int)); | |
684 | static void ix86_sched_init PARAMS ((FILE *, int, int)); | |
685 | static int ix86_sched_reorder PARAMS ((FILE *, int, rtx *, int *, int)); | |
686 | static int ix86_variable_issue PARAMS ((FILE *, int, rtx, int)); | |
e37af218 | 687 | static void ix86_init_mmx_sse_builtins PARAMS ((void)); |
e075ae69 RH |
688 | |
689 | struct ix86_address | |
690 | { | |
691 | rtx base, index, disp; | |
692 | HOST_WIDE_INT scale; | |
693 | }; | |
b08de47e | 694 | |
e075ae69 | 695 | static int ix86_decompose_address PARAMS ((rtx, struct ix86_address *)); |
bd793c65 BS |
696 | |
697 | struct builtin_description; | |
8b60264b KG |
698 | static rtx ix86_expand_sse_comi PARAMS ((const struct builtin_description *, |
699 | tree, rtx)); | |
700 | static rtx ix86_expand_sse_compare PARAMS ((const struct builtin_description *, | |
701 | tree, rtx)); | |
bd793c65 BS |
702 | static rtx ix86_expand_unop1_builtin PARAMS ((enum insn_code, tree, rtx)); |
703 | static rtx ix86_expand_unop_builtin PARAMS ((enum insn_code, tree, rtx, int)); | |
704 | static rtx ix86_expand_binop_builtin PARAMS ((enum insn_code, tree, rtx)); | |
e37af218 RH |
705 | static rtx ix86_expand_timode_binop_builtin PARAMS ((enum insn_code, |
706 | tree, rtx)); | |
707 | static rtx ix86_expand_store_builtin PARAMS ((enum insn_code, tree)); | |
bd793c65 | 708 | static rtx safe_vector_operand PARAMS ((rtx, enum machine_mode)); |
c0c102a9 JH |
709 | static enum rtx_code ix86_fp_compare_code_to_integer PARAMS ((enum rtx_code)); |
710 | static void ix86_fp_comparison_codes PARAMS ((enum rtx_code code, | |
711 | enum rtx_code *, | |
712 | enum rtx_code *, | |
713 | enum rtx_code *)); | |
9e7adcb3 JH |
714 | static rtx ix86_expand_fp_compare PARAMS ((enum rtx_code, rtx, rtx, rtx, |
715 | rtx *, rtx *)); | |
716 | static int ix86_fp_comparison_arithmetics_cost PARAMS ((enum rtx_code code)); | |
717 | static int ix86_fp_comparison_fcomi_cost PARAMS ((enum rtx_code code)); | |
718 | static int ix86_fp_comparison_sahf_cost PARAMS ((enum rtx_code code)); | |
719 | static int ix86_fp_comparison_cost PARAMS ((enum rtx_code code)); | |
37a58036 | 720 | static int ix86_save_reg PARAMS ((int, int)); |
4dd2ac2c | 721 | static void ix86_compute_frame_layout PARAMS ((struct ix86_frame *)); |
8d8e52be | 722 | static int ix86_comp_type_attributes PARAMS ((tree, tree)); |
91d231cb JM |
723 | const struct attribute_spec ix86_attribute_table[]; |
724 | static tree ix86_handle_cdecl_attribute PARAMS ((tree *, tree, tree, int, bool *)); | |
725 | static tree ix86_handle_regparm_attribute PARAMS ((tree *, tree, tree, int, bool *)); | |
7c262518 | 726 | |
2cc07db4 RH |
727 | #ifdef DO_GLOBAL_CTORS_BODY |
728 | static void ix86_svr3_asm_out_constructor PARAMS ((rtx, int)); | |
729 | #endif | |
e56feed6 | 730 | |
53c17031 JH |
731 | /* Register class used for passing given 64bit part of the argument. |
732 | These represent classes as documented by the PS ABI, with the exception | |
733 | of SSESF, SSEDF classes, that are basically SSE class, just gcc will | |
734 | use SF or DFmode move instead of DImode to avoid reformating penalties. | |
735 | ||
736 | Similary we play games with INTEGERSI_CLASS to use cheaper SImode moves | |
737 | whenever possible (upper half does contain padding). | |
738 | */ | |
739 | enum x86_64_reg_class | |
740 | { | |
741 | X86_64_NO_CLASS, | |
742 | X86_64_INTEGER_CLASS, | |
743 | X86_64_INTEGERSI_CLASS, | |
744 | X86_64_SSE_CLASS, | |
745 | X86_64_SSESF_CLASS, | |
746 | X86_64_SSEDF_CLASS, | |
747 | X86_64_SSEUP_CLASS, | |
748 | X86_64_X87_CLASS, | |
749 | X86_64_X87UP_CLASS, | |
750 | X86_64_MEMORY_CLASS | |
751 | }; | |
0b5826ac | 752 | static const char * const x86_64_reg_class_name[] = |
53c17031 JH |
753 | {"no", "integer", "integerSI", "sse", "sseSF", "sseDF", "sseup", "x87", "x87up", "no"}; |
754 | ||
755 | #define MAX_CLASSES 4 | |
756 | static int classify_argument PARAMS ((enum machine_mode, tree, | |
757 | enum x86_64_reg_class [MAX_CLASSES], | |
758 | int)); | |
759 | static int examine_argument PARAMS ((enum machine_mode, tree, int, int *, | |
760 | int *)); | |
761 | static rtx construct_container PARAMS ((enum machine_mode, tree, int, int, int, | |
07933f72 | 762 | const int *, int)); |
53c17031 JH |
763 | static enum x86_64_reg_class merge_classes PARAMS ((enum x86_64_reg_class, |
764 | enum x86_64_reg_class)); | |
672a6f42 NB |
765 | \f |
766 | /* Initialize the GCC target structure. */ | |
91d231cb JM |
767 | #undef TARGET_ATTRIBUTE_TABLE |
768 | #define TARGET_ATTRIBUTE_TABLE ix86_attribute_table | |
672a6f42 | 769 | #ifdef TARGET_DLLIMPORT_DECL_ATTRIBUTES |
f5f4be42 NB |
770 | # undef TARGET_MERGE_DECL_ATTRIBUTES |
771 | # define TARGET_MERGE_DECL_ATTRIBUTES merge_dllimport_decl_attributes | |
672a6f42 NB |
772 | #endif |
773 | ||
8d8e52be JM |
774 | #undef TARGET_COMP_TYPE_ATTRIBUTES |
775 | #define TARGET_COMP_TYPE_ATTRIBUTES ix86_comp_type_attributes | |
776 | ||
f6155fda SS |
777 | #undef TARGET_INIT_BUILTINS |
778 | #define TARGET_INIT_BUILTINS ix86_init_builtins | |
779 | ||
780 | #undef TARGET_EXPAND_BUILTIN | |
781 | #define TARGET_EXPAND_BUILTIN ix86_expand_builtin | |
782 | ||
08c148a8 NB |
783 | #if defined (OSF_OS) || defined (TARGET_OSF1ELF) |
784 | static void ix86_osf_output_function_prologue PARAMS ((FILE *, | |
785 | HOST_WIDE_INT)); | |
786 | # undef TARGET_ASM_FUNCTION_PROLOGUE | |
787 | # define TARGET_ASM_FUNCTION_PROLOGUE ix86_osf_output_function_prologue | |
788 | #endif | |
789 | ||
17b53c33 NB |
790 | #undef TARGET_ASM_OPEN_PAREN |
791 | #define TARGET_ASM_OPEN_PAREN "" | |
792 | #undef TARGET_ASM_CLOSE_PAREN | |
793 | #define TARGET_ASM_CLOSE_PAREN "" | |
794 | ||
301d03af RS |
795 | #undef TARGET_ASM_ALIGNED_HI_OP |
796 | #define TARGET_ASM_ALIGNED_HI_OP ASM_SHORT | |
797 | #undef TARGET_ASM_ALIGNED_SI_OP | |
798 | #define TARGET_ASM_ALIGNED_SI_OP ASM_LONG | |
799 | #ifdef ASM_QUAD | |
800 | #undef TARGET_ASM_ALIGNED_DI_OP | |
801 | #define TARGET_ASM_ALIGNED_DI_OP ASM_QUAD | |
802 | #endif | |
803 | ||
804 | #undef TARGET_ASM_UNALIGNED_HI_OP | |
805 | #define TARGET_ASM_UNALIGNED_HI_OP TARGET_ASM_ALIGNED_HI_OP | |
806 | #undef TARGET_ASM_UNALIGNED_SI_OP | |
807 | #define TARGET_ASM_UNALIGNED_SI_OP TARGET_ASM_ALIGNED_SI_OP | |
808 | #undef TARGET_ASM_UNALIGNED_DI_OP | |
809 | #define TARGET_ASM_UNALIGNED_DI_OP TARGET_ASM_ALIGNED_DI_OP | |
810 | ||
c237e94a ZW |
811 | #undef TARGET_SCHED_ADJUST_COST |
812 | #define TARGET_SCHED_ADJUST_COST ix86_adjust_cost | |
813 | #undef TARGET_SCHED_ISSUE_RATE | |
814 | #define TARGET_SCHED_ISSUE_RATE ix86_issue_rate | |
815 | #undef TARGET_SCHED_VARIABLE_ISSUE | |
816 | #define TARGET_SCHED_VARIABLE_ISSUE ix86_variable_issue | |
817 | #undef TARGET_SCHED_INIT | |
818 | #define TARGET_SCHED_INIT ix86_sched_init | |
819 | #undef TARGET_SCHED_REORDER | |
820 | #define TARGET_SCHED_REORDER ix86_sched_reorder | |
821 | ||
f6897b10 | 822 | struct gcc_target targetm = TARGET_INITIALIZER; |
e075ae69 | 823 | \f |
f5316dfe MM |
824 | /* Sometimes certain combinations of command options do not make |
825 | sense on a particular target machine. You can define a macro | |
826 | `OVERRIDE_OPTIONS' to take account of this. This macro, if | |
827 | defined, is executed once just after all the command options have | |
828 | been parsed. | |
829 | ||
830 | Don't use this macro to turn on various extra optimizations for | |
831 | `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */ | |
832 | ||
833 | void | |
834 | override_options () | |
835 | { | |
400500c4 | 836 | int i; |
e075ae69 RH |
837 | /* Comes from final.c -- no real reason to change it. */ |
838 | #define MAX_CODE_ALIGN 16 | |
f5316dfe | 839 | |
c8c5cb99 SC |
840 | static struct ptt |
841 | { | |
8b60264b KG |
842 | const struct processor_costs *cost; /* Processor costs */ |
843 | const int target_enable; /* Target flags to enable. */ | |
844 | const int target_disable; /* Target flags to disable. */ | |
845 | const int align_loop; /* Default alignments. */ | |
2cca7283 | 846 | const int align_loop_max_skip; |
8b60264b | 847 | const int align_jump; |
2cca7283 | 848 | const int align_jump_max_skip; |
8b60264b KG |
849 | const int align_func; |
850 | const int branch_cost; | |
e075ae69 | 851 | } |
0f290768 | 852 | const processor_target_table[PROCESSOR_max] = |
e075ae69 | 853 | { |
2cca7283 JH |
854 | {&i386_cost, 0, 0, 4, 3, 4, 3, 4, 1}, |
855 | {&i486_cost, 0, 0, 16, 15, 16, 15, 16, 1}, | |
856 | {&pentium_cost, 0, 0, 16, 7, 16, 7, 16, 1}, | |
857 | {&pentiumpro_cost, 0, 0, 16, 15, 16, 7, 16, 1}, | |
858 | {&k6_cost, 0, 0, 32, 7, 32, 7, 32, 1}, | |
859 | {&athlon_cost, 0, 0, 16, 7, 64, 7, 16, 1}, | |
860 | {&pentium4_cost, 0, 0, 0, 0, 0, 0, 0, 1} | |
e075ae69 RH |
861 | }; |
862 | ||
f4365627 | 863 | static const char * const cpu_names[] = TARGET_CPU_DEFAULT_NAMES; |
e075ae69 RH |
864 | static struct pta |
865 | { | |
8b60264b KG |
866 | const char *const name; /* processor name or nickname. */ |
867 | const enum processor_type processor; | |
0dd0e980 JH |
868 | const enum pta_flags |
869 | { | |
870 | PTA_SSE = 1, | |
871 | PTA_SSE2 = 2, | |
872 | PTA_MMX = 4, | |
f4365627 | 873 | PTA_PREFETCH_SSE = 8, |
0dd0e980 JH |
874 | PTA_3DNOW = 16, |
875 | PTA_3DNOW_A = 64 | |
876 | } flags; | |
e075ae69 | 877 | } |
0f290768 | 878 | const processor_alias_table[] = |
e075ae69 | 879 | { |
0dd0e980 JH |
880 | {"i386", PROCESSOR_I386, 0}, |
881 | {"i486", PROCESSOR_I486, 0}, | |
882 | {"i586", PROCESSOR_PENTIUM, 0}, | |
883 | {"pentium", PROCESSOR_PENTIUM, 0}, | |
884 | {"pentium-mmx", PROCESSOR_PENTIUM, PTA_MMX}, | |
885 | {"i686", PROCESSOR_PENTIUMPRO, 0}, | |
886 | {"pentiumpro", PROCESSOR_PENTIUMPRO, 0}, | |
887 | {"pentium2", PROCESSOR_PENTIUMPRO, PTA_MMX}, | |
f4365627 | 888 | {"pentium3", PROCESSOR_PENTIUMPRO, PTA_MMX | PTA_SSE | PTA_PREFETCH_SSE}, |
0dd0e980 | 889 | {"pentium4", PROCESSOR_PENTIUM4, PTA_SSE | PTA_SSE2 | |
f4365627 | 890 | PTA_MMX | PTA_PREFETCH_SSE}, |
0dd0e980 JH |
891 | {"k6", PROCESSOR_K6, PTA_MMX}, |
892 | {"k6-2", PROCESSOR_K6, PTA_MMX | PTA_3DNOW}, | |
893 | {"k6-3", PROCESSOR_K6, PTA_MMX | PTA_3DNOW}, | |
f4365627 | 894 | {"athlon", PROCESSOR_ATHLON, PTA_MMX | PTA_PREFETCH_SSE | PTA_3DNOW |
0dd0e980 | 895 | | PTA_3DNOW_A}, |
f4365627 | 896 | {"athlon-tbird", PROCESSOR_ATHLON, PTA_MMX | PTA_PREFETCH_SSE |
0dd0e980 | 897 | | PTA_3DNOW | PTA_3DNOW_A}, |
f4365627 | 898 | {"athlon-4", PROCESSOR_ATHLON, PTA_MMX | PTA_PREFETCH_SSE | PTA_3DNOW |
0dd0e980 | 899 | | PTA_3DNOW_A | PTA_SSE}, |
f4365627 | 900 | {"athlon-xp", PROCESSOR_ATHLON, PTA_MMX | PTA_PREFETCH_SSE | PTA_3DNOW |
0dd0e980 | 901 | | PTA_3DNOW_A | PTA_SSE}, |
f4365627 | 902 | {"athlon-mp", PROCESSOR_ATHLON, PTA_MMX | PTA_PREFETCH_SSE | PTA_3DNOW |
0dd0e980 | 903 | | PTA_3DNOW_A | PTA_SSE}, |
3af4bd89 | 904 | }; |
c8c5cb99 | 905 | |
0f290768 | 906 | int const pta_size = sizeof (processor_alias_table) / sizeof (struct pta); |
c8c5cb99 | 907 | |
f5316dfe MM |
908 | #ifdef SUBTARGET_OVERRIDE_OPTIONS |
909 | SUBTARGET_OVERRIDE_OPTIONS; | |
910 | #endif | |
911 | ||
f4365627 JH |
912 | if (!ix86_cpu_string && ix86_arch_string) |
913 | ix86_cpu_string = ix86_arch_string; | |
914 | if (!ix86_cpu_string) | |
915 | ix86_cpu_string = cpu_names [TARGET_CPU_DEFAULT]; | |
916 | if (!ix86_arch_string) | |
917 | ix86_arch_string = TARGET_64BIT ? "athlon-4" : "i386"; | |
e075ae69 | 918 | |
6189a572 JH |
919 | if (ix86_cmodel_string != 0) |
920 | { | |
921 | if (!strcmp (ix86_cmodel_string, "small")) | |
922 | ix86_cmodel = flag_pic ? CM_SMALL_PIC : CM_SMALL; | |
923 | else if (flag_pic) | |
c725bd79 | 924 | sorry ("code model %s not supported in PIC mode", ix86_cmodel_string); |
6189a572 JH |
925 | else if (!strcmp (ix86_cmodel_string, "32")) |
926 | ix86_cmodel = CM_32; | |
927 | else if (!strcmp (ix86_cmodel_string, "kernel") && !flag_pic) | |
928 | ix86_cmodel = CM_KERNEL; | |
929 | else if (!strcmp (ix86_cmodel_string, "medium") && !flag_pic) | |
930 | ix86_cmodel = CM_MEDIUM; | |
931 | else if (!strcmp (ix86_cmodel_string, "large") && !flag_pic) | |
932 | ix86_cmodel = CM_LARGE; | |
933 | else | |
934 | error ("bad value (%s) for -mcmodel= switch", ix86_cmodel_string); | |
935 | } | |
936 | else | |
937 | { | |
938 | ix86_cmodel = CM_32; | |
939 | if (TARGET_64BIT) | |
940 | ix86_cmodel = flag_pic ? CM_SMALL_PIC : CM_SMALL; | |
941 | } | |
c93e80a5 JH |
942 | if (ix86_asm_string != 0) |
943 | { | |
944 | if (!strcmp (ix86_asm_string, "intel")) | |
945 | ix86_asm_dialect = ASM_INTEL; | |
946 | else if (!strcmp (ix86_asm_string, "att")) | |
947 | ix86_asm_dialect = ASM_ATT; | |
948 | else | |
949 | error ("bad value (%s) for -masm= switch", ix86_asm_string); | |
950 | } | |
6189a572 | 951 | if ((TARGET_64BIT == 0) != (ix86_cmodel == CM_32)) |
c725bd79 | 952 | error ("code model `%s' not supported in the %s bit mode", |
6189a572 JH |
953 | ix86_cmodel_string, TARGET_64BIT ? "64" : "32"); |
954 | if (ix86_cmodel == CM_LARGE) | |
c725bd79 | 955 | sorry ("code model `large' not supported yet"); |
0c2dc519 | 956 | if ((TARGET_64BIT != 0) != ((target_flags & MASK_64BIT) != 0)) |
c725bd79 | 957 | sorry ("%i-bit mode not compiled in", |
0c2dc519 | 958 | (target_flags & MASK_64BIT) ? 64 : 32); |
6189a572 | 959 | |
f4365627 JH |
960 | for (i = 0; i < pta_size; i++) |
961 | if (! strcmp (ix86_arch_string, processor_alias_table[i].name)) | |
962 | { | |
963 | ix86_arch = processor_alias_table[i].processor; | |
964 | /* Default cpu tuning to the architecture. */ | |
965 | ix86_cpu = ix86_arch; | |
966 | if (processor_alias_table[i].flags & PTA_MMX | |
967 | && !(target_flags & MASK_MMX_SET)) | |
968 | target_flags |= MASK_MMX; | |
969 | if (processor_alias_table[i].flags & PTA_3DNOW | |
970 | && !(target_flags & MASK_3DNOW_SET)) | |
971 | target_flags |= MASK_3DNOW; | |
972 | if (processor_alias_table[i].flags & PTA_3DNOW_A | |
973 | && !(target_flags & MASK_3DNOW_A_SET)) | |
974 | target_flags |= MASK_3DNOW_A; | |
975 | if (processor_alias_table[i].flags & PTA_SSE | |
976 | && !(target_flags & MASK_SSE_SET)) | |
977 | target_flags |= MASK_SSE; | |
978 | if (processor_alias_table[i].flags & PTA_SSE2 | |
979 | && !(target_flags & MASK_SSE2_SET)) | |
980 | target_flags |= MASK_SSE2; | |
981 | if (processor_alias_table[i].flags & PTA_PREFETCH_SSE) | |
982 | x86_prefetch_sse = true; | |
983 | break; | |
984 | } | |
400500c4 | 985 | |
f4365627 JH |
986 | if (i == pta_size) |
987 | error ("bad value (%s) for -march= switch", ix86_arch_string); | |
e075ae69 | 988 | |
f4365627 JH |
989 | for (i = 0; i < pta_size; i++) |
990 | if (! strcmp (ix86_cpu_string, processor_alias_table[i].name)) | |
991 | { | |
992 | ix86_cpu = processor_alias_table[i].processor; | |
993 | break; | |
994 | } | |
995 | if (processor_alias_table[i].flags & PTA_PREFETCH_SSE) | |
996 | x86_prefetch_sse = true; | |
997 | if (i == pta_size) | |
998 | error ("bad value (%s) for -mcpu= switch", ix86_cpu_string); | |
e075ae69 | 999 | |
2ab0437e JH |
1000 | if (optimize_size) |
1001 | ix86_cost = &size_cost; | |
1002 | else | |
1003 | ix86_cost = processor_target_table[ix86_cpu].cost; | |
e075ae69 RH |
1004 | target_flags |= processor_target_table[ix86_cpu].target_enable; |
1005 | target_flags &= ~processor_target_table[ix86_cpu].target_disable; | |
1006 | ||
36edd3cc BS |
1007 | /* Arrange to set up i386_stack_locals for all functions. */ |
1008 | init_machine_status = ix86_init_machine_status; | |
1526a060 | 1009 | mark_machine_status = ix86_mark_machine_status; |
37b15744 | 1010 | free_machine_status = ix86_free_machine_status; |
36edd3cc | 1011 | |
0f290768 | 1012 | /* Validate -mregparm= value. */ |
e075ae69 | 1013 | if (ix86_regparm_string) |
b08de47e | 1014 | { |
400500c4 RK |
1015 | i = atoi (ix86_regparm_string); |
1016 | if (i < 0 || i > REGPARM_MAX) | |
1017 | error ("-mregparm=%d is not between 0 and %d", i, REGPARM_MAX); | |
1018 | else | |
1019 | ix86_regparm = i; | |
b08de47e | 1020 | } |
0d7d98ee JH |
1021 | else |
1022 | if (TARGET_64BIT) | |
1023 | ix86_regparm = REGPARM_MAX; | |
b08de47e | 1024 | |
3e18fdf6 | 1025 | /* If the user has provided any of the -malign-* options, |
a4f31c00 | 1026 | warn and use that value only if -falign-* is not set. |
3e18fdf6 | 1027 | Remove this code in GCC 3.2 or later. */ |
e075ae69 | 1028 | if (ix86_align_loops_string) |
b08de47e | 1029 | { |
3e18fdf6 GK |
1030 | warning ("-malign-loops is obsolete, use -falign-loops"); |
1031 | if (align_loops == 0) | |
1032 | { | |
1033 | i = atoi (ix86_align_loops_string); | |
1034 | if (i < 0 || i > MAX_CODE_ALIGN) | |
1035 | error ("-malign-loops=%d is not between 0 and %d", i, MAX_CODE_ALIGN); | |
1036 | else | |
1037 | align_loops = 1 << i; | |
1038 | } | |
b08de47e | 1039 | } |
3af4bd89 | 1040 | |
e075ae69 | 1041 | if (ix86_align_jumps_string) |
b08de47e | 1042 | { |
3e18fdf6 GK |
1043 | warning ("-malign-jumps is obsolete, use -falign-jumps"); |
1044 | if (align_jumps == 0) | |
1045 | { | |
1046 | i = atoi (ix86_align_jumps_string); | |
1047 | if (i < 0 || i > MAX_CODE_ALIGN) | |
1048 | error ("-malign-loops=%d is not between 0 and %d", i, MAX_CODE_ALIGN); | |
1049 | else | |
1050 | align_jumps = 1 << i; | |
1051 | } | |
b08de47e | 1052 | } |
b08de47e | 1053 | |
e075ae69 | 1054 | if (ix86_align_funcs_string) |
b08de47e | 1055 | { |
3e18fdf6 GK |
1056 | warning ("-malign-functions is obsolete, use -falign-functions"); |
1057 | if (align_functions == 0) | |
1058 | { | |
1059 | i = atoi (ix86_align_funcs_string); | |
1060 | if (i < 0 || i > MAX_CODE_ALIGN) | |
1061 | error ("-malign-loops=%d is not between 0 and %d", i, MAX_CODE_ALIGN); | |
1062 | else | |
1063 | align_functions = 1 << i; | |
1064 | } | |
b08de47e | 1065 | } |
3af4bd89 | 1066 | |
3e18fdf6 | 1067 | /* Default align_* from the processor table. */ |
3e18fdf6 | 1068 | if (align_loops == 0) |
2cca7283 JH |
1069 | { |
1070 | align_loops = processor_target_table[ix86_cpu].align_loop; | |
1071 | align_loops_max_skip = processor_target_table[ix86_cpu].align_loop_max_skip; | |
1072 | } | |
3e18fdf6 | 1073 | if (align_jumps == 0) |
2cca7283 JH |
1074 | { |
1075 | align_jumps = processor_target_table[ix86_cpu].align_jump; | |
1076 | align_jumps_max_skip = processor_target_table[ix86_cpu].align_jump_max_skip; | |
1077 | } | |
3e18fdf6 | 1078 | if (align_functions == 0) |
2cca7283 JH |
1079 | { |
1080 | align_functions = processor_target_table[ix86_cpu].align_func; | |
1081 | } | |
3e18fdf6 | 1082 | |
e4c0478d | 1083 | /* Validate -mpreferred-stack-boundary= value, or provide default. |
fbb83b43 AO |
1084 | The default of 128 bits is for Pentium III's SSE __m128, but we |
1085 | don't want additional code to keep the stack aligned when | |
1086 | optimizing for code size. */ | |
1087 | ix86_preferred_stack_boundary = (optimize_size | |
1088 | ? TARGET_64BIT ? 64 : 32 | |
1089 | : 128); | |
e075ae69 | 1090 | if (ix86_preferred_stack_boundary_string) |
3af4bd89 | 1091 | { |
400500c4 | 1092 | i = atoi (ix86_preferred_stack_boundary_string); |
c6257c5d AO |
1093 | if (i < (TARGET_64BIT ? 3 : 2) || i > 12) |
1094 | error ("-mpreferred-stack-boundary=%d is not between %d and 12", i, | |
0d7d98ee | 1095 | TARGET_64BIT ? 3 : 2); |
400500c4 RK |
1096 | else |
1097 | ix86_preferred_stack_boundary = (1 << i) * BITS_PER_UNIT; | |
3af4bd89 | 1098 | } |
77a989d1 | 1099 | |
0f290768 | 1100 | /* Validate -mbranch-cost= value, or provide default. */ |
e075ae69 RH |
1101 | ix86_branch_cost = processor_target_table[ix86_cpu].branch_cost; |
1102 | if (ix86_branch_cost_string) | |
804a8ee0 | 1103 | { |
400500c4 RK |
1104 | i = atoi (ix86_branch_cost_string); |
1105 | if (i < 0 || i > 5) | |
1106 | error ("-mbranch-cost=%d is not between 0 and 5", i); | |
1107 | else | |
1108 | ix86_branch_cost = i; | |
804a8ee0 | 1109 | } |
804a8ee0 | 1110 | |
e9a25f70 JL |
1111 | /* Keep nonleaf frame pointers. */ |
1112 | if (TARGET_OMIT_LEAF_FRAME_POINTER) | |
77a989d1 | 1113 | flag_omit_frame_pointer = 1; |
e075ae69 RH |
1114 | |
1115 | /* If we're doing fast math, we don't care about comparison order | |
1116 | wrt NaNs. This lets us use a shorter comparison sequence. */ | |
de6c5979 | 1117 | if (flag_unsafe_math_optimizations) |
e075ae69 RH |
1118 | target_flags &= ~MASK_IEEE_FP; |
1119 | ||
14f73b5a JH |
1120 | if (TARGET_64BIT) |
1121 | { | |
1122 | if (TARGET_ALIGN_DOUBLE) | |
c725bd79 | 1123 | error ("-malign-double makes no sense in the 64bit mode"); |
14f73b5a | 1124 | if (TARGET_RTD) |
c725bd79 | 1125 | error ("-mrtd calling convention not supported in the 64bit mode"); |
14f73b5a | 1126 | /* Enable by default the SSE and MMX builtins. */ |
965f5423 JH |
1127 | target_flags |= (MASK_SSE2 | MASK_SSE | MASK_MMX | MASK_128BIT_LONG_DOUBLE); |
1128 | ix86_fpmath = FPMATH_SSE; | |
14f73b5a | 1129 | } |
965f5423 JH |
1130 | else |
1131 | ix86_fpmath = FPMATH_387; | |
1132 | ||
1133 | if (ix86_fpmath_string != 0) | |
1134 | { | |
1135 | if (! strcmp (ix86_fpmath_string, "387")) | |
1136 | ix86_fpmath = FPMATH_387; | |
1137 | else if (! strcmp (ix86_fpmath_string, "sse")) | |
1138 | { | |
1139 | if (!TARGET_SSE) | |
1140 | { | |
1141 | warning ("SSE instruction set disabled, using 387 arithmetics"); | |
1142 | ix86_fpmath = FPMATH_387; | |
1143 | } | |
1144 | else | |
1145 | ix86_fpmath = FPMATH_SSE; | |
1146 | } | |
1147 | else if (! strcmp (ix86_fpmath_string, "387,sse") | |
1148 | || ! strcmp (ix86_fpmath_string, "sse,387")) | |
1149 | { | |
1150 | if (!TARGET_SSE) | |
1151 | { | |
1152 | warning ("SSE instruction set disabled, using 387 arithmetics"); | |
1153 | ix86_fpmath = FPMATH_387; | |
1154 | } | |
1155 | else if (!TARGET_80387) | |
1156 | { | |
1157 | warning ("387 instruction set disabled, using SSE arithmetics"); | |
1158 | ix86_fpmath = FPMATH_SSE; | |
1159 | } | |
1160 | else | |
1161 | ix86_fpmath = FPMATH_SSE | FPMATH_387; | |
1162 | } | |
1163 | else | |
1164 | error ("bad value (%s) for -mfpmath= switch", ix86_fpmath_string); | |
1165 | } | |
14f73b5a | 1166 | |
a7180f70 BS |
1167 | /* It makes no sense to ask for just SSE builtins, so MMX is also turned |
1168 | on by -msse. */ | |
1169 | if (TARGET_SSE) | |
e37af218 RH |
1170 | { |
1171 | target_flags |= MASK_MMX; | |
1172 | x86_prefetch_sse = true; | |
1173 | } | |
c6036a37 | 1174 | |
47f339cf BS |
1175 | /* If it has 3DNow! it also has MMX so MMX is also turned on by -m3dnow */ |
1176 | if (TARGET_3DNOW) | |
1177 | { | |
1178 | target_flags |= MASK_MMX; | |
1179 | /* If we are targetting the Athlon architecture, enable the 3Dnow/MMX | |
1180 | extensions it adds. */ | |
1181 | if (x86_3dnow_a & (1 << ix86_arch)) | |
1182 | target_flags |= MASK_3DNOW_A; | |
1183 | } | |
c6036a37 | 1184 | if ((x86_accumulate_outgoing_args & CPUMASK) |
0dd0e980 | 1185 | && !(target_flags & MASK_ACCUMULATE_OUTGOING_ARGS_SET) |
c6036a37 JH |
1186 | && !optimize_size) |
1187 | target_flags |= MASK_ACCUMULATE_OUTGOING_ARGS; | |
623fe810 RH |
1188 | |
1189 | /* Figure out what ASM_GENERATE_INTERNAL_LABEL builds as a prefix. */ | |
1190 | { | |
1191 | char *p; | |
1192 | ASM_GENERATE_INTERNAL_LABEL (internal_label_prefix, "LX", 0); | |
1193 | p = strchr (internal_label_prefix, 'X'); | |
1194 | internal_label_prefix_len = p - internal_label_prefix; | |
1195 | *p = '\0'; | |
1196 | } | |
f5316dfe MM |
1197 | } |
1198 | \f | |
32b5b1aa | 1199 | void |
c6aded7c | 1200 | optimization_options (level, size) |
32b5b1aa | 1201 | int level; |
bb5177ac | 1202 | int size ATTRIBUTE_UNUSED; |
32b5b1aa | 1203 | { |
e9a25f70 JL |
1204 | /* For -O2 and beyond, turn off -fschedule-insns by default. It tends to |
1205 | make the problem with not enough registers even worse. */ | |
32b5b1aa SC |
1206 | #ifdef INSN_SCHEDULING |
1207 | if (level > 1) | |
1208 | flag_schedule_insns = 0; | |
1209 | #endif | |
53c17031 JH |
1210 | if (TARGET_64BIT && optimize >= 1) |
1211 | flag_omit_frame_pointer = 1; | |
1212 | if (TARGET_64BIT) | |
b932f770 JH |
1213 | { |
1214 | flag_pcc_struct_return = 0; | |
1215 | flag_asynchronous_unwind_tables = 1; | |
1216 | } | |
32b5b1aa | 1217 | } |
b08de47e | 1218 | \f |
91d231cb JM |
1219 | /* Table of valid machine attributes. */ |
1220 | const struct attribute_spec ix86_attribute_table[] = | |
b08de47e | 1221 | { |
91d231cb | 1222 | /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ |
b08de47e MM |
1223 | /* Stdcall attribute says callee is responsible for popping arguments |
1224 | if they are not variable. */ | |
91d231cb JM |
1225 | { "stdcall", 0, 0, false, true, true, ix86_handle_cdecl_attribute }, |
1226 | /* Cdecl attribute says the callee is a normal C declaration */ | |
1227 | { "cdecl", 0, 0, false, true, true, ix86_handle_cdecl_attribute }, | |
b08de47e | 1228 | /* Regparm attribute specifies how many integer arguments are to be |
0f290768 | 1229 | passed in registers. */ |
91d231cb JM |
1230 | { "regparm", 1, 1, false, true, true, ix86_handle_regparm_attribute }, |
1231 | #ifdef TARGET_DLLIMPORT_DECL_ATTRIBUTES | |
3da1eb0b DS |
1232 | { "dllimport", 0, 0, false, false, false, ix86_handle_dll_attribute }, |
1233 | { "dllexport", 0, 0, false, false, false, ix86_handle_dll_attribute }, | |
1234 | { "shared", 0, 0, true, false, false, ix86_handle_shared_attribute }, | |
91d231cb JM |
1235 | #endif |
1236 | { NULL, 0, 0, false, false, false, NULL } | |
1237 | }; | |
1238 | ||
1239 | /* Handle a "cdecl" or "stdcall" attribute; | |
1240 | arguments as in struct attribute_spec.handler. */ | |
1241 | static tree | |
1242 | ix86_handle_cdecl_attribute (node, name, args, flags, no_add_attrs) | |
1243 | tree *node; | |
1244 | tree name; | |
1245 | tree args ATTRIBUTE_UNUSED; | |
1246 | int flags ATTRIBUTE_UNUSED; | |
1247 | bool *no_add_attrs; | |
1248 | { | |
1249 | if (TREE_CODE (*node) != FUNCTION_TYPE | |
1250 | && TREE_CODE (*node) != METHOD_TYPE | |
1251 | && TREE_CODE (*node) != FIELD_DECL | |
1252 | && TREE_CODE (*node) != TYPE_DECL) | |
b08de47e | 1253 | { |
91d231cb JM |
1254 | warning ("`%s' attribute only applies to functions", |
1255 | IDENTIFIER_POINTER (name)); | |
1256 | *no_add_attrs = true; | |
1257 | } | |
b08de47e | 1258 | |
91d231cb JM |
1259 | if (TARGET_64BIT) |
1260 | { | |
1261 | warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); | |
1262 | *no_add_attrs = true; | |
1263 | } | |
b08de47e | 1264 | |
91d231cb JM |
1265 | return NULL_TREE; |
1266 | } | |
b08de47e | 1267 | |
91d231cb JM |
1268 | /* Handle a "regparm" attribute; |
1269 | arguments as in struct attribute_spec.handler. */ | |
1270 | static tree | |
1271 | ix86_handle_regparm_attribute (node, name, args, flags, no_add_attrs) | |
1272 | tree *node; | |
1273 | tree name; | |
1274 | tree args; | |
1275 | int flags ATTRIBUTE_UNUSED; | |
1276 | bool *no_add_attrs; | |
1277 | { | |
1278 | if (TREE_CODE (*node) != FUNCTION_TYPE | |
1279 | && TREE_CODE (*node) != METHOD_TYPE | |
1280 | && TREE_CODE (*node) != FIELD_DECL | |
1281 | && TREE_CODE (*node) != TYPE_DECL) | |
1282 | { | |
1283 | warning ("`%s' attribute only applies to functions", | |
1284 | IDENTIFIER_POINTER (name)); | |
1285 | *no_add_attrs = true; | |
1286 | } | |
1287 | else | |
1288 | { | |
1289 | tree cst; | |
b08de47e | 1290 | |
91d231cb JM |
1291 | cst = TREE_VALUE (args); |
1292 | if (TREE_CODE (cst) != INTEGER_CST) | |
1293 | { | |
1294 | warning ("`%s' attribute requires an integer constant argument", | |
1295 | IDENTIFIER_POINTER (name)); | |
1296 | *no_add_attrs = true; | |
1297 | } | |
1298 | else if (compare_tree_int (cst, REGPARM_MAX) > 0) | |
1299 | { | |
1300 | warning ("argument to `%s' attribute larger than %d", | |
1301 | IDENTIFIER_POINTER (name), REGPARM_MAX); | |
1302 | *no_add_attrs = true; | |
1303 | } | |
b08de47e MM |
1304 | } |
1305 | ||
91d231cb | 1306 | return NULL_TREE; |
b08de47e MM |
1307 | } |
1308 | ||
08c148a8 NB |
1309 | #if defined (OSF_OS) || defined (TARGET_OSF1ELF) |
1310 | ||
1311 | /* Generate the assembly code for function entry. FILE is a stdio | |
1312 | stream to output the code to. SIZE is an int: how many units of | |
1313 | temporary storage to allocate. | |
1314 | ||
1315 | Refer to the array `regs_ever_live' to determine which registers to | |
1316 | save; `regs_ever_live[I]' is nonzero if register number I is ever | |
1317 | used in the function. This function is responsible for knowing | |
1318 | which registers should not be saved even if used. | |
1319 | ||
1320 | We override it here to allow for the new profiling code to go before | |
1321 | the prologue and the old mcount code to go after the prologue (and | |
1322 | after %ebx has been set up for ELF shared library support). */ | |
1323 | ||
1324 | static void | |
1325 | ix86_osf_output_function_prologue (file, size) | |
1326 | FILE *file; | |
1327 | HOST_WIDE_INT size; | |
1328 | { | |
5f37d07c KG |
1329 | const char *prefix = ""; |
1330 | const char *const lprefix = LPREFIX; | |
08c148a8 NB |
1331 | int labelno = profile_label_no; |
1332 | ||
1333 | #ifdef OSF_OS | |
1334 | ||
1335 | if (TARGET_UNDERSCORES) | |
1336 | prefix = "_"; | |
1337 | ||
70f4f91c | 1338 | if (current_function_profile && OSF_PROFILE_BEFORE_PROLOGUE) |
08c148a8 NB |
1339 | { |
1340 | if (!flag_pic && !HALF_PIC_P ()) | |
1341 | { | |
1342 | fprintf (file, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); | |
1343 | fprintf (file, "\tcall *%s_mcount_ptr\n", prefix); | |
1344 | } | |
1345 | ||
1346 | else if (HALF_PIC_P ()) | |
1347 | { | |
1348 | rtx symref; | |
1349 | ||
1350 | HALF_PIC_EXTERNAL ("_mcount_ptr"); | |
1351 | symref = HALF_PIC_PTR (gen_rtx_SYMBOL_REF (Pmode, | |
1352 | "_mcount_ptr")); | |
1353 | ||
1354 | fprintf (file, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); | |
1355 | fprintf (file, "\tmovl %s%s,%%eax\n", prefix, | |
1356 | XSTR (symref, 0)); | |
1357 | fprintf (file, "\tcall *(%%eax)\n"); | |
1358 | } | |
1359 | ||
1360 | else | |
1361 | { | |
1362 | static int call_no = 0; | |
1363 | ||
1364 | fprintf (file, "\tcall %sPc%d\n", lprefix, call_no); | |
1365 | fprintf (file, "%sPc%d:\tpopl %%eax\n", lprefix, call_no); | |
1366 | fprintf (file, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-%sPc%d],%%eax\n", | |
1367 | lprefix, call_no++); | |
1368 | fprintf (file, "\tleal %sP%d@GOTOFF(%%eax),%%edx\n", | |
1369 | lprefix, labelno); | |
1370 | fprintf (file, "\tmovl %s_mcount_ptr@GOT(%%eax),%%eax\n", | |
1371 | prefix); | |
1372 | fprintf (file, "\tcall *(%%eax)\n"); | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | #else /* !OSF_OS */ | |
1377 | ||
70f4f91c | 1378 | if (current_function_profile && OSF_PROFILE_BEFORE_PROLOGUE) |
08c148a8 NB |
1379 | { |
1380 | if (!flag_pic) | |
1381 | { | |
1382 | fprintf (file, "\tmovl $%sP%d,%%edx\n", lprefix, labelno); | |
1383 | fprintf (file, "\tcall *%s_mcount_ptr\n", prefix); | |
1384 | } | |
1385 | ||
1386 | else | |
1387 | { | |
1388 | static int call_no = 0; | |
1389 | ||
1390 | fprintf (file, "\tcall %sPc%d\n", lprefix, call_no); | |
1391 | fprintf (file, "%sPc%d:\tpopl %%eax\n", lprefix, call_no); | |
1392 | fprintf (file, "\taddl $_GLOBAL_OFFSET_TABLE_+[.-%sPc%d],%%eax\n", | |
1393 | lprefix, call_no++); | |
1394 | fprintf (file, "\tleal %sP%d@GOTOFF(%%eax),%%edx\n", | |
1395 | lprefix, labelno); | |
1396 | fprintf (file, "\tmovl %s_mcount_ptr@GOT(%%eax),%%eax\n", | |
1397 | prefix); | |
1398 | fprintf (file, "\tcall *(%%eax)\n"); | |
1399 | } | |
1400 | } | |
1401 | #endif /* !OSF_OS */ | |
1402 | ||
1403 | function_prologue (file, size); | |
1404 | } | |
1405 | ||
1406 | #endif /* OSF_OS || TARGET_OSF1ELF */ | |
1407 | ||
b08de47e MM |
1408 | /* Return 0 if the attributes for two types are incompatible, 1 if they |
1409 | are compatible, and 2 if they are nearly compatible (which causes a | |
1410 | warning to be generated). */ | |
1411 | ||
8d8e52be | 1412 | static int |
e075ae69 | 1413 | ix86_comp_type_attributes (type1, type2) |
afcfe58c MM |
1414 | tree type1; |
1415 | tree type2; | |
b08de47e | 1416 | { |
0f290768 | 1417 | /* Check for mismatch of non-default calling convention. */ |
27c38fbe | 1418 | const char *const rtdstr = TARGET_RTD ? "cdecl" : "stdcall"; |
afcfe58c MM |
1419 | |
1420 | if (TREE_CODE (type1) != FUNCTION_TYPE) | |
1421 | return 1; | |
1422 | ||
1423 | /* Check for mismatched return types (cdecl vs stdcall). */ | |
6093f019 RH |
1424 | if (!lookup_attribute (rtdstr, TYPE_ATTRIBUTES (type1)) |
1425 | != !lookup_attribute (rtdstr, TYPE_ATTRIBUTES (type2))) | |
afcfe58c | 1426 | return 0; |
b08de47e MM |
1427 | return 1; |
1428 | } | |
b08de47e MM |
1429 | \f |
1430 | /* Value is the number of bytes of arguments automatically | |
1431 | popped when returning from a subroutine call. | |
1432 | FUNDECL is the declaration node of the function (as a tree), | |
1433 | FUNTYPE is the data type of the function (as a tree), | |
1434 | or for a library call it is an identifier node for the subroutine name. | |
1435 | SIZE is the number of bytes of arguments passed on the stack. | |
1436 | ||
1437 | On the 80386, the RTD insn may be used to pop them if the number | |
1438 | of args is fixed, but if the number is variable then the caller | |
1439 | must pop them all. RTD can't be used for library calls now | |
1440 | because the library is compiled with the Unix compiler. | |
1441 | Use of RTD is a selectable option, since it is incompatible with | |
1442 | standard Unix calling sequences. If the option is not selected, | |
1443 | the caller must always pop the args. | |
1444 | ||
1445 | The attribute stdcall is equivalent to RTD on a per module basis. */ | |
1446 | ||
1447 | int | |
e075ae69 | 1448 | ix86_return_pops_args (fundecl, funtype, size) |
b08de47e MM |
1449 | tree fundecl; |
1450 | tree funtype; | |
1451 | int size; | |
79325812 | 1452 | { |
3345ee7d | 1453 | int rtd = TARGET_RTD && (!fundecl || TREE_CODE (fundecl) != IDENTIFIER_NODE); |
b08de47e | 1454 | |
0f290768 | 1455 | /* Cdecl functions override -mrtd, and never pop the stack. */ |
e9a25f70 | 1456 | if (! lookup_attribute ("cdecl", TYPE_ATTRIBUTES (funtype))) { |
79325812 | 1457 | |
0f290768 | 1458 | /* Stdcall functions will pop the stack if not variable args. */ |
698cdd84 SC |
1459 | if (lookup_attribute ("stdcall", TYPE_ATTRIBUTES (funtype))) |
1460 | rtd = 1; | |
79325812 | 1461 | |
698cdd84 SC |
1462 | if (rtd |
1463 | && (TYPE_ARG_TYPES (funtype) == NULL_TREE | |
e9a25f70 JL |
1464 | || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (funtype))) |
1465 | == void_type_node))) | |
698cdd84 SC |
1466 | return size; |
1467 | } | |
79325812 | 1468 | |
e9a25f70 | 1469 | /* Lose any fake structure return argument. */ |
0d7d98ee JH |
1470 | if (aggregate_value_p (TREE_TYPE (funtype)) |
1471 | && !TARGET_64BIT) | |
698cdd84 | 1472 | return GET_MODE_SIZE (Pmode); |
79325812 | 1473 | |
2614aac6 | 1474 | return 0; |
b08de47e | 1475 | } |
b08de47e MM |
1476 | \f |
1477 | /* Argument support functions. */ | |
1478 | ||
53c17031 JH |
1479 | /* Return true when register may be used to pass function parameters. */ |
1480 | bool | |
1481 | ix86_function_arg_regno_p (regno) | |
1482 | int regno; | |
1483 | { | |
1484 | int i; | |
1485 | if (!TARGET_64BIT) | |
1486 | return regno < REGPARM_MAX || (TARGET_SSE && SSE_REGNO_P (regno)); | |
1487 | if (SSE_REGNO_P (regno) && TARGET_SSE) | |
1488 | return true; | |
1489 | /* RAX is used as hidden argument to va_arg functions. */ | |
1490 | if (!regno) | |
1491 | return true; | |
1492 | for (i = 0; i < REGPARM_MAX; i++) | |
1493 | if (regno == x86_64_int_parameter_registers[i]) | |
1494 | return true; | |
1495 | return false; | |
1496 | } | |
1497 | ||
b08de47e MM |
1498 | /* Initialize a variable CUM of type CUMULATIVE_ARGS |
1499 | for a call to a function whose data type is FNTYPE. | |
1500 | For a library call, FNTYPE is 0. */ | |
1501 | ||
1502 | void | |
1503 | init_cumulative_args (cum, fntype, libname) | |
e9a25f70 | 1504 | CUMULATIVE_ARGS *cum; /* Argument info to initialize */ |
b08de47e MM |
1505 | tree fntype; /* tree ptr for function decl */ |
1506 | rtx libname; /* SYMBOL_REF of library name or 0 */ | |
1507 | { | |
1508 | static CUMULATIVE_ARGS zero_cum; | |
1509 | tree param, next_param; | |
1510 | ||
1511 | if (TARGET_DEBUG_ARG) | |
1512 | { | |
1513 | fprintf (stderr, "\ninit_cumulative_args ("); | |
1514 | if (fntype) | |
e9a25f70 JL |
1515 | fprintf (stderr, "fntype code = %s, ret code = %s", |
1516 | tree_code_name[(int) TREE_CODE (fntype)], | |
1517 | tree_code_name[(int) TREE_CODE (TREE_TYPE (fntype))]); | |
b08de47e MM |
1518 | else |
1519 | fprintf (stderr, "no fntype"); | |
1520 | ||
1521 | if (libname) | |
1522 | fprintf (stderr, ", libname = %s", XSTR (libname, 0)); | |
1523 | } | |
1524 | ||
1525 | *cum = zero_cum; | |
1526 | ||
1527 | /* Set up the number of registers to use for passing arguments. */ | |
e075ae69 | 1528 | cum->nregs = ix86_regparm; |
53c17031 JH |
1529 | cum->sse_nregs = SSE_REGPARM_MAX; |
1530 | if (fntype && !TARGET_64BIT) | |
b08de47e MM |
1531 | { |
1532 | tree attr = lookup_attribute ("regparm", TYPE_ATTRIBUTES (fntype)); | |
e9a25f70 | 1533 | |
b08de47e MM |
1534 | if (attr) |
1535 | cum->nregs = TREE_INT_CST_LOW (TREE_VALUE (TREE_VALUE (attr))); | |
1536 | } | |
53c17031 | 1537 | cum->maybe_vaarg = false; |
b08de47e MM |
1538 | |
1539 | /* Determine if this function has variable arguments. This is | |
1540 | indicated by the last argument being 'void_type_mode' if there | |
1541 | are no variable arguments. If there are variable arguments, then | |
1542 | we won't pass anything in registers */ | |
1543 | ||
1544 | if (cum->nregs) | |
1545 | { | |
1546 | for (param = (fntype) ? TYPE_ARG_TYPES (fntype) : 0; | |
e9a25f70 | 1547 | param != 0; param = next_param) |
b08de47e MM |
1548 | { |
1549 | next_param = TREE_CHAIN (param); | |
e9a25f70 | 1550 | if (next_param == 0 && TREE_VALUE (param) != void_type_node) |
53c17031 JH |
1551 | { |
1552 | if (!TARGET_64BIT) | |
1553 | cum->nregs = 0; | |
1554 | cum->maybe_vaarg = true; | |
1555 | } | |
b08de47e MM |
1556 | } |
1557 | } | |
53c17031 JH |
1558 | if ((!fntype && !libname) |
1559 | || (fntype && !TYPE_ARG_TYPES (fntype))) | |
1560 | cum->maybe_vaarg = 1; | |
b08de47e MM |
1561 | |
1562 | if (TARGET_DEBUG_ARG) | |
1563 | fprintf (stderr, ", nregs=%d )\n", cum->nregs); | |
1564 | ||
1565 | return; | |
1566 | } | |
1567 | ||
53c17031 | 1568 | /* x86-64 register passing impleemntation. See x86-64 ABI for details. Goal |
f710504c | 1569 | of this code is to classify each 8bytes of incoming argument by the register |
53c17031 JH |
1570 | class and assign registers accordingly. */ |
1571 | ||
1572 | /* Return the union class of CLASS1 and CLASS2. | |
1573 | See the x86-64 PS ABI for details. */ | |
1574 | ||
1575 | static enum x86_64_reg_class | |
1576 | merge_classes (class1, class2) | |
1577 | enum x86_64_reg_class class1, class2; | |
1578 | { | |
1579 | /* Rule #1: If both classes are equal, this is the resulting class. */ | |
1580 | if (class1 == class2) | |
1581 | return class1; | |
1582 | ||
1583 | /* Rule #2: If one of the classes is NO_CLASS, the resulting class is | |
1584 | the other class. */ | |
1585 | if (class1 == X86_64_NO_CLASS) | |
1586 | return class2; | |
1587 | if (class2 == X86_64_NO_CLASS) | |
1588 | return class1; | |
1589 | ||
1590 | /* Rule #3: If one of the classes is MEMORY, the result is MEMORY. */ | |
1591 | if (class1 == X86_64_MEMORY_CLASS || class2 == X86_64_MEMORY_CLASS) | |
1592 | return X86_64_MEMORY_CLASS; | |
1593 | ||
1594 | /* Rule #4: If one of the classes is INTEGER, the result is INTEGER. */ | |
1595 | if ((class1 == X86_64_INTEGERSI_CLASS && class2 == X86_64_SSESF_CLASS) | |
1596 | || (class2 == X86_64_INTEGERSI_CLASS && class1 == X86_64_SSESF_CLASS)) | |
1597 | return X86_64_INTEGERSI_CLASS; | |
1598 | if (class1 == X86_64_INTEGER_CLASS || class1 == X86_64_INTEGERSI_CLASS | |
1599 | || class2 == X86_64_INTEGER_CLASS || class2 == X86_64_INTEGERSI_CLASS) | |
1600 | return X86_64_INTEGER_CLASS; | |
1601 | ||
1602 | /* Rule #5: If one of the classes is X87 or X87UP class, MEMORY is used. */ | |
1603 | if (class1 == X86_64_X87_CLASS || class1 == X86_64_X87UP_CLASS | |
1604 | || class2 == X86_64_X87_CLASS || class2 == X86_64_X87UP_CLASS) | |
1605 | return X86_64_MEMORY_CLASS; | |
1606 | ||
1607 | /* Rule #6: Otherwise class SSE is used. */ | |
1608 | return X86_64_SSE_CLASS; | |
1609 | } | |
1610 | ||
1611 | /* Classify the argument of type TYPE and mode MODE. | |
1612 | CLASSES will be filled by the register class used to pass each word | |
1613 | of the operand. The number of words is returned. In case the parameter | |
1614 | should be passed in memory, 0 is returned. As a special case for zero | |
1615 | sized containers, classes[0] will be NO_CLASS and 1 is returned. | |
1616 | ||
1617 | BIT_OFFSET is used internally for handling records and specifies offset | |
1618 | of the offset in bits modulo 256 to avoid overflow cases. | |
1619 | ||
1620 | See the x86-64 PS ABI for details. | |
1621 | */ | |
1622 | ||
1623 | static int | |
1624 | classify_argument (mode, type, classes, bit_offset) | |
1625 | enum machine_mode mode; | |
1626 | tree type; | |
1627 | enum x86_64_reg_class classes[MAX_CLASSES]; | |
1628 | int bit_offset; | |
1629 | { | |
1630 | int bytes = | |
1631 | (mode == BLKmode) ? int_size_in_bytes (type) : (int) GET_MODE_SIZE (mode); | |
1632 | int words = (bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD; | |
1633 | ||
1634 | if (type && AGGREGATE_TYPE_P (type)) | |
1635 | { | |
1636 | int i; | |
1637 | tree field; | |
1638 | enum x86_64_reg_class subclasses[MAX_CLASSES]; | |
1639 | ||
1640 | /* On x86-64 we pass structures larger than 16 bytes on the stack. */ | |
1641 | if (bytes > 16) | |
1642 | return 0; | |
1643 | ||
1644 | for (i = 0; i < words; i++) | |
1645 | classes[i] = X86_64_NO_CLASS; | |
1646 | ||
1647 | /* Zero sized arrays or structures are NO_CLASS. We return 0 to | |
1648 | signalize memory class, so handle it as special case. */ | |
1649 | if (!words) | |
1650 | { | |
1651 | classes[0] = X86_64_NO_CLASS; | |
1652 | return 1; | |
1653 | } | |
1654 | ||
1655 | /* Classify each field of record and merge classes. */ | |
1656 | if (TREE_CODE (type) == RECORD_TYPE) | |
1657 | { | |
1658 | for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
1659 | { | |
1660 | if (TREE_CODE (field) == FIELD_DECL) | |
1661 | { | |
1662 | int num; | |
1663 | ||
1664 | /* Bitfields are always classified as integer. Handle them | |
1665 | early, since later code would consider them to be | |
1666 | misaligned integers. */ | |
1667 | if (DECL_BIT_FIELD (field)) | |
1668 | { | |
1669 | for (i = int_bit_position (field) / 8 / 8; | |
1670 | i < (int_bit_position (field) | |
1671 | + tree_low_cst (DECL_SIZE (field), 0) | |
1672 | + 63) / 8 / 8; i++) | |
1673 | classes[i] = | |
1674 | merge_classes (X86_64_INTEGER_CLASS, | |
1675 | classes[i]); | |
1676 | } | |
1677 | else | |
1678 | { | |
1679 | num = classify_argument (TYPE_MODE (TREE_TYPE (field)), | |
1680 | TREE_TYPE (field), subclasses, | |
1681 | (int_bit_position (field) | |
1682 | + bit_offset) % 256); | |
1683 | if (!num) | |
1684 | return 0; | |
1685 | for (i = 0; i < num; i++) | |
1686 | { | |
1687 | int pos = | |
1688 | (int_bit_position (field) + bit_offset) / 8 / 8; | |
1689 | classes[i + pos] = | |
1690 | merge_classes (subclasses[i], classes[i + pos]); | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | } | |
1695 | } | |
1696 | /* Arrays are handled as small records. */ | |
1697 | else if (TREE_CODE (type) == ARRAY_TYPE) | |
1698 | { | |
1699 | int num; | |
1700 | num = classify_argument (TYPE_MODE (TREE_TYPE (type)), | |
1701 | TREE_TYPE (type), subclasses, bit_offset); | |
1702 | if (!num) | |
1703 | return 0; | |
1704 | ||
1705 | /* The partial classes are now full classes. */ | |
1706 | if (subclasses[0] == X86_64_SSESF_CLASS && bytes != 4) | |
1707 | subclasses[0] = X86_64_SSE_CLASS; | |
1708 | if (subclasses[0] == X86_64_INTEGERSI_CLASS && bytes != 4) | |
1709 | subclasses[0] = X86_64_INTEGER_CLASS; | |
1710 | ||
1711 | for (i = 0; i < words; i++) | |
1712 | classes[i] = subclasses[i % num]; | |
1713 | } | |
1714 | /* Unions are similar to RECORD_TYPE but offset is always 0. */ | |
1715 | else if (TREE_CODE (type) == UNION_TYPE) | |
1716 | { | |
1717 | for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field)) | |
1718 | { | |
1719 | if (TREE_CODE (field) == FIELD_DECL) | |
1720 | { | |
1721 | int num; | |
1722 | num = classify_argument (TYPE_MODE (TREE_TYPE (field)), | |
1723 | TREE_TYPE (field), subclasses, | |
1724 | bit_offset); | |
1725 | if (!num) | |
1726 | return 0; | |
1727 | for (i = 0; i < num; i++) | |
1728 | classes[i] = merge_classes (subclasses[i], classes[i]); | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | else | |
1733 | abort (); | |
1734 | ||
1735 | /* Final merger cleanup. */ | |
1736 | for (i = 0; i < words; i++) | |
1737 | { | |
1738 | /* If one class is MEMORY, everything should be passed in | |
1739 | memory. */ | |
1740 | if (classes[i] == X86_64_MEMORY_CLASS) | |
1741 | return 0; | |
1742 | ||
d6a7951f | 1743 | /* The X86_64_SSEUP_CLASS should be always preceded by |
53c17031 JH |
1744 | X86_64_SSE_CLASS. */ |
1745 | if (classes[i] == X86_64_SSEUP_CLASS | |
1746 | && (i == 0 || classes[i - 1] != X86_64_SSE_CLASS)) | |
1747 | classes[i] = X86_64_SSE_CLASS; | |
1748 | ||
d6a7951f | 1749 | /* X86_64_X87UP_CLASS should be preceded by X86_64_X87_CLASS. */ |
53c17031 JH |
1750 | if (classes[i] == X86_64_X87UP_CLASS |
1751 | && (i == 0 || classes[i - 1] != X86_64_X87_CLASS)) | |
1752 | classes[i] = X86_64_SSE_CLASS; | |
1753 | } | |
1754 | return words; | |
1755 | } | |
1756 | ||
1757 | /* Compute alignment needed. We align all types to natural boundaries with | |
1758 | exception of XFmode that is aligned to 64bits. */ | |
1759 | if (mode != VOIDmode && mode != BLKmode) | |
1760 | { | |
1761 | int mode_alignment = GET_MODE_BITSIZE (mode); | |
1762 | ||
1763 | if (mode == XFmode) | |
1764 | mode_alignment = 128; | |
1765 | else if (mode == XCmode) | |
1766 | mode_alignment = 256; | |
f5143c46 | 1767 | /* Misaligned fields are always returned in memory. */ |
53c17031 JH |
1768 | if (bit_offset % mode_alignment) |
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | /* Classification of atomic types. */ | |
1773 | switch (mode) | |
1774 | { | |
1775 | case DImode: | |
1776 | case SImode: | |
1777 | case HImode: | |
1778 | case QImode: | |
1779 | case CSImode: | |
1780 | case CHImode: | |
1781 | case CQImode: | |
1782 | if (bit_offset + GET_MODE_BITSIZE (mode) <= 32) | |
1783 | classes[0] = X86_64_INTEGERSI_CLASS; | |
1784 | else | |
1785 | classes[0] = X86_64_INTEGER_CLASS; | |
1786 | return 1; | |
1787 | case CDImode: | |
1788 | case TImode: | |
1789 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
1790 | return 2; | |
1791 | case CTImode: | |
1792 | classes[0] = classes[1] = X86_64_INTEGER_CLASS; | |
1793 | classes[2] = classes[3] = X86_64_INTEGER_CLASS; | |
1794 | return 4; | |
1795 | case SFmode: | |
1796 | if (!(bit_offset % 64)) | |
1797 | classes[0] = X86_64_SSESF_CLASS; | |
1798 | else | |
1799 | classes[0] = X86_64_SSE_CLASS; | |
1800 | return 1; | |
1801 | case DFmode: | |
1802 | classes[0] = X86_64_SSEDF_CLASS; | |
1803 | return 1; | |
1804 | case TFmode: | |
1805 | classes[0] = X86_64_X87_CLASS; | |
1806 | classes[1] = X86_64_X87UP_CLASS; | |
1807 | return 2; | |
1808 | case TCmode: | |
1809 | classes[0] = X86_64_X87_CLASS; | |
1810 | classes[1] = X86_64_X87UP_CLASS; | |
1811 | classes[2] = X86_64_X87_CLASS; | |
1812 | classes[3] = X86_64_X87UP_CLASS; | |
1813 | return 4; | |
1814 | case DCmode: | |
1815 | classes[0] = X86_64_SSEDF_CLASS; | |
1816 | classes[1] = X86_64_SSEDF_CLASS; | |
1817 | return 2; | |
1818 | case SCmode: | |
1819 | classes[0] = X86_64_SSE_CLASS; | |
1820 | return 1; | |
1821 | case BLKmode: | |
1822 | return 0; | |
1823 | default: | |
1824 | abort (); | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | /* Examine the argument and return set number of register required in each | |
f5143c46 | 1829 | class. Return 0 iff parameter should be passed in memory. */ |
53c17031 JH |
1830 | static int |
1831 | examine_argument (mode, type, in_return, int_nregs, sse_nregs) | |
1832 | enum machine_mode mode; | |
1833 | tree type; | |
1834 | int *int_nregs, *sse_nregs; | |
1835 | int in_return; | |
1836 | { | |
1837 | enum x86_64_reg_class class[MAX_CLASSES]; | |
1838 | int n = classify_argument (mode, type, class, 0); | |
1839 | ||
1840 | *int_nregs = 0; | |
1841 | *sse_nregs = 0; | |
1842 | if (!n) | |
1843 | return 0; | |
1844 | for (n--; n >= 0; n--) | |
1845 | switch (class[n]) | |
1846 | { | |
1847 | case X86_64_INTEGER_CLASS: | |
1848 | case X86_64_INTEGERSI_CLASS: | |
1849 | (*int_nregs)++; | |
1850 | break; | |
1851 | case X86_64_SSE_CLASS: | |
1852 | case X86_64_SSESF_CLASS: | |
1853 | case X86_64_SSEDF_CLASS: | |
1854 | (*sse_nregs)++; | |
1855 | break; | |
1856 | case X86_64_NO_CLASS: | |
1857 | case X86_64_SSEUP_CLASS: | |
1858 | break; | |
1859 | case X86_64_X87_CLASS: | |
1860 | case X86_64_X87UP_CLASS: | |
1861 | if (!in_return) | |
1862 | return 0; | |
1863 | break; | |
1864 | case X86_64_MEMORY_CLASS: | |
1865 | abort (); | |
1866 | } | |
1867 | return 1; | |
1868 | } | |
1869 | /* Construct container for the argument used by GCC interface. See | |
1870 | FUNCTION_ARG for the detailed description. */ | |
1871 | static rtx | |
1872 | construct_container (mode, type, in_return, nintregs, nsseregs, intreg, sse_regno) | |
1873 | enum machine_mode mode; | |
1874 | tree type; | |
1875 | int in_return; | |
1876 | int nintregs, nsseregs; | |
07933f72 GS |
1877 | const int * intreg; |
1878 | int sse_regno; | |
53c17031 JH |
1879 | { |
1880 | enum machine_mode tmpmode; | |
1881 | int bytes = | |
1882 | (mode == BLKmode) ? int_size_in_bytes (type) : (int) GET_MODE_SIZE (mode); | |
1883 | enum x86_64_reg_class class[MAX_CLASSES]; | |
1884 | int n; | |
1885 | int i; | |
1886 | int nexps = 0; | |
1887 | int needed_sseregs, needed_intregs; | |
1888 | rtx exp[MAX_CLASSES]; | |
1889 | rtx ret; | |
1890 | ||
1891 | n = classify_argument (mode, type, class, 0); | |
1892 | if (TARGET_DEBUG_ARG) | |
1893 | { | |
1894 | if (!n) | |
1895 | fprintf (stderr, "Memory class\n"); | |
1896 | else | |
1897 | { | |
1898 | fprintf (stderr, "Classes:"); | |
1899 | for (i = 0; i < n; i++) | |
1900 | { | |
1901 | fprintf (stderr, " %s", x86_64_reg_class_name[class[i]]); | |
1902 | } | |
1903 | fprintf (stderr, "\n"); | |
1904 | } | |
1905 | } | |
1906 | if (!n) | |
1907 | return NULL; | |
1908 | if (!examine_argument (mode, type, in_return, &needed_intregs, &needed_sseregs)) | |
1909 | return NULL; | |
1910 | if (needed_intregs > nintregs || needed_sseregs > nsseregs) | |
1911 | return NULL; | |
1912 | ||
1913 | /* First construct simple cases. Avoid SCmode, since we want to use | |
1914 | single register to pass this type. */ | |
1915 | if (n == 1 && mode != SCmode) | |
1916 | switch (class[0]) | |
1917 | { | |
1918 | case X86_64_INTEGER_CLASS: | |
1919 | case X86_64_INTEGERSI_CLASS: | |
1920 | return gen_rtx_REG (mode, intreg[0]); | |
1921 | case X86_64_SSE_CLASS: | |
1922 | case X86_64_SSESF_CLASS: | |
1923 | case X86_64_SSEDF_CLASS: | |
1924 | return gen_rtx_REG (mode, SSE_REGNO (sse_regno)); | |
1925 | case X86_64_X87_CLASS: | |
1926 | return gen_rtx_REG (mode, FIRST_STACK_REG); | |
1927 | case X86_64_NO_CLASS: | |
1928 | /* Zero sized array, struct or class. */ | |
1929 | return NULL; | |
1930 | default: | |
1931 | abort (); | |
1932 | } | |
1933 | if (n == 2 && class[0] == X86_64_SSE_CLASS && class[1] == X86_64_SSEUP_CLASS) | |
1934 | return gen_rtx_REG (TImode, SSE_REGNO (sse_regno)); | |
1935 | if (n == 2 | |
1936 | && class[0] == X86_64_X87_CLASS && class[1] == X86_64_X87UP_CLASS) | |
1937 | return gen_rtx_REG (TFmode, FIRST_STACK_REG); | |
1938 | if (n == 2 && class[0] == X86_64_INTEGER_CLASS | |
1939 | && class[1] == X86_64_INTEGER_CLASS | |
1940 | && (mode == CDImode || mode == TImode) | |
1941 | && intreg[0] + 1 == intreg[1]) | |
1942 | return gen_rtx_REG (mode, intreg[0]); | |
1943 | if (n == 4 | |
1944 | && class[0] == X86_64_X87_CLASS && class[1] == X86_64_X87UP_CLASS | |
1945 | && class[2] == X86_64_X87_CLASS && class[3] == X86_64_X87UP_CLASS) | |
1946 | return gen_rtx_REG (TCmode, FIRST_STACK_REG); | |
1947 | ||
1948 | /* Otherwise figure out the entries of the PARALLEL. */ | |
1949 | for (i = 0; i < n; i++) | |
1950 | { | |
1951 | switch (class[i]) | |
1952 | { | |
1953 | case X86_64_NO_CLASS: | |
1954 | break; | |
1955 | case X86_64_INTEGER_CLASS: | |
1956 | case X86_64_INTEGERSI_CLASS: | |
1957 | /* Merge TImodes on aligned occassions here too. */ | |
1958 | if (i * 8 + 8 > bytes) | |
1959 | tmpmode = mode_for_size ((bytes - i * 8) * BITS_PER_UNIT, MODE_INT, 0); | |
1960 | else if (class[i] == X86_64_INTEGERSI_CLASS) | |
1961 | tmpmode = SImode; | |
1962 | else | |
1963 | tmpmode = DImode; | |
1964 | /* We've requested 24 bytes we don't have mode for. Use DImode. */ | |
1965 | if (tmpmode == BLKmode) | |
1966 | tmpmode = DImode; | |
1967 | exp [nexps++] = gen_rtx_EXPR_LIST (VOIDmode, | |
1968 | gen_rtx_REG (tmpmode, *intreg), | |
1969 | GEN_INT (i*8)); | |
1970 | intreg++; | |
1971 | break; | |
1972 | case X86_64_SSESF_CLASS: | |
1973 | exp [nexps++] = gen_rtx_EXPR_LIST (VOIDmode, | |
1974 | gen_rtx_REG (SFmode, | |
1975 | SSE_REGNO (sse_regno)), | |
1976 | GEN_INT (i*8)); | |
1977 | sse_regno++; | |
1978 | break; | |
1979 | case X86_64_SSEDF_CLASS: | |
1980 | exp [nexps++] = gen_rtx_EXPR_LIST (VOIDmode, | |
1981 | gen_rtx_REG (DFmode, | |
1982 | SSE_REGNO (sse_regno)), | |
1983 | GEN_INT (i*8)); | |
1984 | sse_regno++; | |
1985 | break; | |
1986 | case X86_64_SSE_CLASS: | |
1987 | if (i < n && class[i + 1] == X86_64_SSEUP_CLASS) | |
1988 | tmpmode = TImode, i++; | |
1989 | else | |
1990 | tmpmode = DImode; | |
1991 | exp [nexps++] = gen_rtx_EXPR_LIST (VOIDmode, | |
1992 | gen_rtx_REG (tmpmode, | |
1993 | SSE_REGNO (sse_regno)), | |
1994 | GEN_INT (i*8)); | |
1995 | sse_regno++; | |
1996 | break; | |
1997 | default: | |
1998 | abort (); | |
1999 | } | |
2000 | } | |
2001 | ret = gen_rtx_PARALLEL (mode, rtvec_alloc (nexps)); | |
2002 | for (i = 0; i < nexps; i++) | |
2003 | XVECEXP (ret, 0, i) = exp [i]; | |
2004 | return ret; | |
2005 | } | |
2006 | ||
b08de47e MM |
2007 | /* Update the data in CUM to advance over an argument |
2008 | of mode MODE and data type TYPE. | |
2009 | (TYPE is null for libcalls where that information may not be available.) */ | |
2010 | ||
2011 | void | |
2012 | function_arg_advance (cum, mode, type, named) | |
2013 | CUMULATIVE_ARGS *cum; /* current arg information */ | |
2014 | enum machine_mode mode; /* current arg mode */ | |
2015 | tree type; /* type of the argument or 0 if lib support */ | |
2016 | int named; /* whether or not the argument was named */ | |
2017 | { | |
5ac9118e KG |
2018 | int bytes = |
2019 | (mode == BLKmode) ? int_size_in_bytes (type) : (int) GET_MODE_SIZE (mode); | |
b08de47e MM |
2020 | int words = (bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD; |
2021 | ||
2022 | if (TARGET_DEBUG_ARG) | |
2023 | fprintf (stderr, | |
e9a25f70 | 2024 | "function_adv (sz=%d, wds=%2d, nregs=%d, mode=%s, named=%d)\n\n", |
b08de47e | 2025 | words, cum->words, cum->nregs, GET_MODE_NAME (mode), named); |
53c17031 | 2026 | if (TARGET_64BIT) |
b08de47e | 2027 | { |
53c17031 JH |
2028 | int int_nregs, sse_nregs; |
2029 | if (!examine_argument (mode, type, 0, &int_nregs, &sse_nregs)) | |
2030 | cum->words += words; | |
2031 | else if (sse_nregs <= cum->sse_nregs && int_nregs <= cum->nregs) | |
82a127a9 | 2032 | { |
53c17031 JH |
2033 | cum->nregs -= int_nregs; |
2034 | cum->sse_nregs -= sse_nregs; | |
2035 | cum->regno += int_nregs; | |
2036 | cum->sse_regno += sse_nregs; | |
82a127a9 | 2037 | } |
53c17031 JH |
2038 | else |
2039 | cum->words += words; | |
b08de47e | 2040 | } |
a4f31c00 | 2041 | else |
82a127a9 | 2042 | { |
53c17031 JH |
2043 | if (TARGET_SSE && mode == TImode) |
2044 | { | |
2045 | cum->sse_words += words; | |
2046 | cum->sse_nregs -= 1; | |
2047 | cum->sse_regno += 1; | |
2048 | if (cum->sse_nregs <= 0) | |
2049 | { | |
2050 | cum->sse_nregs = 0; | |
2051 | cum->sse_regno = 0; | |
2052 | } | |
2053 | } | |
2054 | else | |
82a127a9 | 2055 | { |
53c17031 JH |
2056 | cum->words += words; |
2057 | cum->nregs -= words; | |
2058 | cum->regno += words; | |
2059 | ||
2060 | if (cum->nregs <= 0) | |
2061 | { | |
2062 | cum->nregs = 0; | |
2063 | cum->regno = 0; | |
2064 | } | |
82a127a9 CM |
2065 | } |
2066 | } | |
b08de47e MM |
2067 | return; |
2068 | } | |
2069 | ||
2070 | /* Define where to put the arguments to a function. | |
2071 | Value is zero to push the argument on the stack, | |
2072 | or a hard register in which to store the argument. | |
2073 | ||
2074 | MODE is the argument's machine mode. | |
2075 | TYPE is the data type of the argument (as a tree). | |
2076 | This is null for libcalls where that information may | |
2077 | not be available. | |
2078 | CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
2079 | the preceding args and about the function being called. | |
2080 | NAMED is nonzero if this argument is a named parameter | |
2081 | (otherwise it is an extra parameter matching an ellipsis). */ | |
2082 | ||
07933f72 | 2083 | rtx |
b08de47e MM |
2084 | function_arg (cum, mode, type, named) |
2085 | CUMULATIVE_ARGS *cum; /* current arg information */ | |
2086 | enum machine_mode mode; /* current arg mode */ | |
2087 | tree type; /* type of the argument or 0 if lib support */ | |
2088 | int named; /* != 0 for normal args, == 0 for ... args */ | |
2089 | { | |
2090 | rtx ret = NULL_RTX; | |
5ac9118e KG |
2091 | int bytes = |
2092 | (mode == BLKmode) ? int_size_in_bytes (type) : (int) GET_MODE_SIZE (mode); | |
b08de47e MM |
2093 | int words = (bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD; |
2094 | ||
53c17031 JH |
2095 | /* Handle an hidden AL argument containing number of registers for varargs |
2096 | x86-64 functions. For i386 ABI just return constm1_rtx to avoid | |
2097 | any AL settings. */ | |
32ee7d1d | 2098 | if (mode == VOIDmode) |
b08de47e | 2099 | { |
53c17031 JH |
2100 | if (TARGET_64BIT) |
2101 | return GEN_INT (cum->maybe_vaarg | |
2102 | ? (cum->sse_nregs < 0 | |
2103 | ? SSE_REGPARM_MAX | |
2104 | : cum->sse_regno) | |
2105 | : -1); | |
2106 | else | |
2107 | return constm1_rtx; | |
b08de47e | 2108 | } |
53c17031 JH |
2109 | if (TARGET_64BIT) |
2110 | ret = construct_container (mode, type, 0, cum->nregs, cum->sse_nregs, | |
2111 | &x86_64_int_parameter_registers [cum->regno], | |
2112 | cum->sse_regno); | |
2113 | else | |
2114 | switch (mode) | |
2115 | { | |
2116 | /* For now, pass fp/complex values on the stack. */ | |
2117 | default: | |
2118 | break; | |
2119 | ||
2120 | case BLKmode: | |
2121 | case DImode: | |
2122 | case SImode: | |
2123 | case HImode: | |
2124 | case QImode: | |
2125 | if (words <= cum->nregs) | |
2126 | ret = gen_rtx_REG (mode, cum->regno); | |
2127 | break; | |
2128 | case TImode: | |
2129 | if (cum->sse_nregs) | |
2130 | ret = gen_rtx_REG (mode, cum->sse_regno); | |
2131 | break; | |
2132 | } | |
b08de47e MM |
2133 | |
2134 | if (TARGET_DEBUG_ARG) | |
2135 | { | |
2136 | fprintf (stderr, | |
e9a25f70 | 2137 | "function_arg (size=%d, wds=%2d, nregs=%d, mode=%4s, named=%d", |
b08de47e MM |
2138 | words, cum->words, cum->nregs, GET_MODE_NAME (mode), named); |
2139 | ||
2140 | if (ret) | |
2141 | fprintf (stderr, ", reg=%%e%s", reg_names[ REGNO(ret) ]); | |
2142 | else | |
2143 | fprintf (stderr, ", stack"); | |
2144 | ||
2145 | fprintf (stderr, " )\n"); | |
2146 | } | |
2147 | ||
2148 | return ret; | |
2149 | } | |
53c17031 JH |
2150 | |
2151 | /* Gives the alignment boundary, in bits, of an argument with the specified mode | |
2152 | and type. */ | |
2153 | ||
2154 | int | |
2155 | ix86_function_arg_boundary (mode, type) | |
2156 | enum machine_mode mode; | |
2157 | tree type; | |
2158 | { | |
2159 | int align; | |
2160 | if (!TARGET_64BIT) | |
2161 | return PARM_BOUNDARY; | |
2162 | if (type) | |
2163 | align = TYPE_ALIGN (type); | |
2164 | else | |
2165 | align = GET_MODE_ALIGNMENT (mode); | |
2166 | if (align < PARM_BOUNDARY) | |
2167 | align = PARM_BOUNDARY; | |
2168 | if (align > 128) | |
2169 | align = 128; | |
2170 | return align; | |
2171 | } | |
2172 | ||
2173 | /* Return true if N is a possible register number of function value. */ | |
2174 | bool | |
2175 | ix86_function_value_regno_p (regno) | |
2176 | int regno; | |
2177 | { | |
2178 | if (!TARGET_64BIT) | |
2179 | { | |
2180 | return ((regno) == 0 | |
2181 | || ((regno) == FIRST_FLOAT_REG && TARGET_FLOAT_RETURNS_IN_80387) | |
2182 | || ((regno) == FIRST_SSE_REG && TARGET_SSE)); | |
2183 | } | |
2184 | return ((regno) == 0 || (regno) == FIRST_FLOAT_REG | |
2185 | || ((regno) == FIRST_SSE_REG && TARGET_SSE) | |
2186 | || ((regno) == FIRST_FLOAT_REG && TARGET_FLOAT_RETURNS_IN_80387)); | |
2187 | } | |
2188 | ||
2189 | /* Define how to find the value returned by a function. | |
2190 | VALTYPE is the data type of the value (as a tree). | |
2191 | If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
2192 | otherwise, FUNC is 0. */ | |
2193 | rtx | |
2194 | ix86_function_value (valtype) | |
2195 | tree valtype; | |
2196 | { | |
2197 | if (TARGET_64BIT) | |
2198 | { | |
2199 | rtx ret = construct_container (TYPE_MODE (valtype), valtype, 1, | |
2200 | REGPARM_MAX, SSE_REGPARM_MAX, | |
2201 | x86_64_int_return_registers, 0); | |
2202 | /* For zero sized structures, construct_continer return NULL, but we need | |
2203 | to keep rest of compiler happy by returning meaningfull value. */ | |
2204 | if (!ret) | |
2205 | ret = gen_rtx_REG (TYPE_MODE (valtype), 0); | |
2206 | return ret; | |
2207 | } | |
2208 | else | |
2209 | return gen_rtx_REG (TYPE_MODE (valtype), VALUE_REGNO (TYPE_MODE (valtype))); | |
2210 | } | |
2211 | ||
f5143c46 | 2212 | /* Return false iff type is returned in memory. */ |
53c17031 JH |
2213 | int |
2214 | ix86_return_in_memory (type) | |
2215 | tree type; | |
2216 | { | |
2217 | int needed_intregs, needed_sseregs; | |
2218 | if (TARGET_64BIT) | |
2219 | { | |
2220 | return !examine_argument (TYPE_MODE (type), type, 1, | |
2221 | &needed_intregs, &needed_sseregs); | |
2222 | } | |
2223 | else | |
2224 | { | |
2225 | if (TYPE_MODE (type) == BLKmode | |
2226 | || (VECTOR_MODE_P (TYPE_MODE (type)) | |
2227 | && int_size_in_bytes (type) == 8) | |
2228 | || (int_size_in_bytes (type) > 12 && TYPE_MODE (type) != TImode | |
2229 | && TYPE_MODE (type) != TFmode | |
2230 | && !VECTOR_MODE_P (TYPE_MODE (type)))) | |
2231 | return 1; | |
2232 | return 0; | |
2233 | } | |
2234 | } | |
2235 | ||
2236 | /* Define how to find the value returned by a library function | |
2237 | assuming the value has mode MODE. */ | |
2238 | rtx | |
2239 | ix86_libcall_value (mode) | |
2240 | enum machine_mode mode; | |
2241 | { | |
2242 | if (TARGET_64BIT) | |
2243 | { | |
2244 | switch (mode) | |
2245 | { | |
2246 | case SFmode: | |
2247 | case SCmode: | |
2248 | case DFmode: | |
2249 | case DCmode: | |
2250 | return gen_rtx_REG (mode, FIRST_SSE_REG); | |
2251 | case TFmode: | |
2252 | case TCmode: | |
2253 | return gen_rtx_REG (mode, FIRST_FLOAT_REG); | |
2254 | default: | |
2255 | return gen_rtx_REG (mode, 0); | |
2256 | } | |
2257 | } | |
2258 | else | |
2259 | return gen_rtx_REG (mode, VALUE_REGNO (mode)); | |
2260 | } | |
ad919812 JH |
2261 | \f |
2262 | /* Create the va_list data type. */ | |
53c17031 | 2263 | |
ad919812 JH |
2264 | tree |
2265 | ix86_build_va_list () | |
2266 | { | |
2267 | tree f_gpr, f_fpr, f_ovf, f_sav, record, type_decl; | |
53c17031 | 2268 | |
ad919812 JH |
2269 | /* For i386 we use plain pointer to argument area. */ |
2270 | if (!TARGET_64BIT) | |
2271 | return build_pointer_type (char_type_node); | |
2272 | ||
2273 | record = make_lang_type (RECORD_TYPE); | |
2274 | type_decl = build_decl (TYPE_DECL, get_identifier ("__va_list_tag"), record); | |
2275 | ||
2276 | f_gpr = build_decl (FIELD_DECL, get_identifier ("gp_offset"), | |
2277 | unsigned_type_node); | |
2278 | f_fpr = build_decl (FIELD_DECL, get_identifier ("fp_offset"), | |
2279 | unsigned_type_node); | |
2280 | f_ovf = build_decl (FIELD_DECL, get_identifier ("overflow_arg_area"), | |
2281 | ptr_type_node); | |
2282 | f_sav = build_decl (FIELD_DECL, get_identifier ("reg_save_area"), | |
2283 | ptr_type_node); | |
2284 | ||
2285 | DECL_FIELD_CONTEXT (f_gpr) = record; | |
2286 | DECL_FIELD_CONTEXT (f_fpr) = record; | |
2287 | DECL_FIELD_CONTEXT (f_ovf) = record; | |
2288 | DECL_FIELD_CONTEXT (f_sav) = record; | |
2289 | ||
2290 | TREE_CHAIN (record) = type_decl; | |
2291 | TYPE_NAME (record) = type_decl; | |
2292 | TYPE_FIELDS (record) = f_gpr; | |
2293 | TREE_CHAIN (f_gpr) = f_fpr; | |
2294 | TREE_CHAIN (f_fpr) = f_ovf; | |
2295 | TREE_CHAIN (f_ovf) = f_sav; | |
2296 | ||
2297 | layout_type (record); | |
2298 | ||
2299 | /* The correct type is an array type of one element. */ | |
2300 | return build_array_type (record, build_index_type (size_zero_node)); | |
2301 | } | |
2302 | ||
2303 | /* Perform any needed actions needed for a function that is receiving a | |
2304 | variable number of arguments. | |
2305 | ||
2306 | CUM is as above. | |
2307 | ||
2308 | MODE and TYPE are the mode and type of the current parameter. | |
2309 | ||
2310 | PRETEND_SIZE is a variable that should be set to the amount of stack | |
2311 | that must be pushed by the prolog to pretend that our caller pushed | |
2312 | it. | |
2313 | ||
2314 | Normally, this macro will push all remaining incoming registers on the | |
2315 | stack and set PRETEND_SIZE to the length of the registers pushed. */ | |
2316 | ||
2317 | void | |
2318 | ix86_setup_incoming_varargs (cum, mode, type, pretend_size, no_rtl) | |
2319 | CUMULATIVE_ARGS *cum; | |
2320 | enum machine_mode mode; | |
2321 | tree type; | |
2322 | int *pretend_size ATTRIBUTE_UNUSED; | |
2323 | int no_rtl; | |
2324 | ||
2325 | { | |
2326 | CUMULATIVE_ARGS next_cum; | |
2327 | rtx save_area = NULL_RTX, mem; | |
2328 | rtx label; | |
2329 | rtx label_ref; | |
2330 | rtx tmp_reg; | |
2331 | rtx nsse_reg; | |
2332 | int set; | |
2333 | tree fntype; | |
2334 | int stdarg_p; | |
2335 | int i; | |
2336 | ||
2337 | if (!TARGET_64BIT) | |
2338 | return; | |
2339 | ||
2340 | /* Indicate to allocate space on the stack for varargs save area. */ | |
2341 | ix86_save_varrargs_registers = 1; | |
2342 | ||
2343 | fntype = TREE_TYPE (current_function_decl); | |
2344 | stdarg_p = (TYPE_ARG_TYPES (fntype) != 0 | |
2345 | && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype))) | |
2346 | != void_type_node)); | |
2347 | ||
2348 | /* For varargs, we do not want to skip the dummy va_dcl argument. | |
2349 | For stdargs, we do want to skip the last named argument. */ | |
2350 | next_cum = *cum; | |
2351 | if (stdarg_p) | |
2352 | function_arg_advance (&next_cum, mode, type, 1); | |
2353 | ||
2354 | if (!no_rtl) | |
2355 | save_area = frame_pointer_rtx; | |
2356 | ||
2357 | set = get_varargs_alias_set (); | |
2358 | ||
2359 | for (i = next_cum.regno; i < ix86_regparm; i++) | |
2360 | { | |
2361 | mem = gen_rtx_MEM (Pmode, | |
2362 | plus_constant (save_area, i * UNITS_PER_WORD)); | |
0692acba | 2363 | set_mem_alias_set (mem, set); |
ad919812 JH |
2364 | emit_move_insn (mem, gen_rtx_REG (Pmode, |
2365 | x86_64_int_parameter_registers[i])); | |
2366 | } | |
2367 | ||
2368 | if (next_cum.sse_nregs) | |
2369 | { | |
2370 | /* Now emit code to save SSE registers. The AX parameter contains number | |
2371 | of SSE parameter regsiters used to call this function. We use | |
2372 | sse_prologue_save insn template that produces computed jump across | |
2373 | SSE saves. We need some preparation work to get this working. */ | |
2374 | ||
2375 | label = gen_label_rtx (); | |
2376 | label_ref = gen_rtx_LABEL_REF (Pmode, label); | |
2377 | ||
2378 | /* Compute address to jump to : | |
2379 | label - 5*eax + nnamed_sse_arguments*5 */ | |
2380 | tmp_reg = gen_reg_rtx (Pmode); | |
2381 | nsse_reg = gen_reg_rtx (Pmode); | |
2382 | emit_insn (gen_zero_extendqidi2 (nsse_reg, gen_rtx_REG (QImode, 0))); | |
2383 | emit_insn (gen_rtx_SET (VOIDmode, tmp_reg, | |
44cf5b6a | 2384 | gen_rtx_MULT (Pmode, nsse_reg, |
ad919812 JH |
2385 | GEN_INT (4)))); |
2386 | if (next_cum.sse_regno) | |
2387 | emit_move_insn | |
2388 | (nsse_reg, | |
2389 | gen_rtx_CONST (DImode, | |
2390 | gen_rtx_PLUS (DImode, | |
2391 | label_ref, | |
2392 | GEN_INT (next_cum.sse_regno * 4)))); | |
2393 | else | |
2394 | emit_move_insn (nsse_reg, label_ref); | |
2395 | emit_insn (gen_subdi3 (nsse_reg, nsse_reg, tmp_reg)); | |
2396 | ||
2397 | /* Compute address of memory block we save into. We always use pointer | |
2398 | pointing 127 bytes after first byte to store - this is needed to keep | |
2399 | instruction size limited by 4 bytes. */ | |
2400 | tmp_reg = gen_reg_rtx (Pmode); | |
8ac61af7 RK |
2401 | emit_insn (gen_rtx_SET (VOIDmode, tmp_reg, |
2402 | plus_constant (save_area, | |
2403 | 8 * REGPARM_MAX + 127))); | |
ad919812 | 2404 | mem = gen_rtx_MEM (BLKmode, plus_constant (tmp_reg, -127)); |
14f73b5a | 2405 | set_mem_alias_set (mem, set); |
8ac61af7 | 2406 | set_mem_align (mem, BITS_PER_WORD); |
ad919812 JH |
2407 | |
2408 | /* And finally do the dirty job! */ | |
8ac61af7 RK |
2409 | emit_insn (gen_sse_prologue_save (mem, nsse_reg, |
2410 | GEN_INT (next_cum.sse_regno), label)); | |
ad919812 JH |
2411 | } |
2412 | ||
2413 | } | |
2414 | ||
2415 | /* Implement va_start. */ | |
2416 | ||
2417 | void | |
2418 | ix86_va_start (stdarg_p, valist, nextarg) | |
2419 | int stdarg_p; | |
2420 | tree valist; | |
2421 | rtx nextarg; | |
2422 | { | |
2423 | HOST_WIDE_INT words, n_gpr, n_fpr; | |
2424 | tree f_gpr, f_fpr, f_ovf, f_sav; | |
2425 | tree gpr, fpr, ovf, sav, t; | |
2426 | ||
2427 | /* Only 64bit target needs something special. */ | |
2428 | if (!TARGET_64BIT) | |
2429 | { | |
2430 | std_expand_builtin_va_start (stdarg_p, valist, nextarg); | |
2431 | return; | |
2432 | } | |
2433 | ||
2434 | f_gpr = TYPE_FIELDS (TREE_TYPE (va_list_type_node)); | |
2435 | f_fpr = TREE_CHAIN (f_gpr); | |
2436 | f_ovf = TREE_CHAIN (f_fpr); | |
2437 | f_sav = TREE_CHAIN (f_ovf); | |
2438 | ||
2439 | valist = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (valist)), valist); | |
2440 | gpr = build (COMPONENT_REF, TREE_TYPE (f_gpr), valist, f_gpr); | |
2441 | fpr = build (COMPONENT_REF, TREE_TYPE (f_fpr), valist, f_fpr); | |
2442 | ovf = build (COMPONENT_REF, TREE_TYPE (f_ovf), valist, f_ovf); | |
2443 | sav = build (COMPONENT_REF, TREE_TYPE (f_sav), valist, f_sav); | |
2444 | ||
2445 | /* Count number of gp and fp argument registers used. */ | |
2446 | words = current_function_args_info.words; | |
2447 | n_gpr = current_function_args_info.regno; | |
2448 | n_fpr = current_function_args_info.sse_regno; | |
2449 | ||
2450 | if (TARGET_DEBUG_ARG) | |
2451 | fprintf (stderr, "va_start: words = %d, n_gpr = %d, n_fpr = %d\n", | |
14f73b5a | 2452 | (int)words, (int)n_gpr, (int)n_fpr); |
ad919812 JH |
2453 | |
2454 | t = build (MODIFY_EXPR, TREE_TYPE (gpr), gpr, | |
2455 | build_int_2 (n_gpr * 8, 0)); | |
2456 | TREE_SIDE_EFFECTS (t) = 1; | |
2457 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2458 | ||
2459 | t = build (MODIFY_EXPR, TREE_TYPE (fpr), fpr, | |
2460 | build_int_2 (n_fpr * 16 + 8*REGPARM_MAX, 0)); | |
2461 | TREE_SIDE_EFFECTS (t) = 1; | |
2462 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2463 | ||
2464 | /* Find the overflow area. */ | |
2465 | t = make_tree (TREE_TYPE (ovf), virtual_incoming_args_rtx); | |
2466 | if (words != 0) | |
2467 | t = build (PLUS_EXPR, TREE_TYPE (ovf), t, | |
2468 | build_int_2 (words * UNITS_PER_WORD, 0)); | |
2469 | t = build (MODIFY_EXPR, TREE_TYPE (ovf), ovf, t); | |
2470 | TREE_SIDE_EFFECTS (t) = 1; | |
2471 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2472 | ||
2473 | /* Find the register save area. | |
2474 | Prologue of the function save it right above stack frame. */ | |
2475 | t = make_tree (TREE_TYPE (sav), frame_pointer_rtx); | |
2476 | t = build (MODIFY_EXPR, TREE_TYPE (sav), sav, t); | |
2477 | TREE_SIDE_EFFECTS (t) = 1; | |
2478 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2479 | } | |
2480 | ||
2481 | /* Implement va_arg. */ | |
2482 | rtx | |
2483 | ix86_va_arg (valist, type) | |
2484 | tree valist, type; | |
2485 | { | |
2486 | static int intreg[6] = { 0, 1, 2, 3, 4, 5 }; | |
2487 | tree f_gpr, f_fpr, f_ovf, f_sav; | |
2488 | tree gpr, fpr, ovf, sav, t; | |
b932f770 | 2489 | int size, rsize; |
ad919812 JH |
2490 | rtx lab_false, lab_over = NULL_RTX; |
2491 | rtx addr_rtx, r; | |
2492 | rtx container; | |
2493 | ||
2494 | /* Only 64bit target needs something special. */ | |
2495 | if (!TARGET_64BIT) | |
2496 | { | |
2497 | return std_expand_builtin_va_arg (valist, type); | |
2498 | } | |
2499 | ||
2500 | f_gpr = TYPE_FIELDS (TREE_TYPE (va_list_type_node)); | |
2501 | f_fpr = TREE_CHAIN (f_gpr); | |
2502 | f_ovf = TREE_CHAIN (f_fpr); | |
2503 | f_sav = TREE_CHAIN (f_ovf); | |
2504 | ||
2505 | valist = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (valist)), valist); | |
2506 | gpr = build (COMPONENT_REF, TREE_TYPE (f_gpr), valist, f_gpr); | |
2507 | fpr = build (COMPONENT_REF, TREE_TYPE (f_fpr), valist, f_fpr); | |
2508 | ovf = build (COMPONENT_REF, TREE_TYPE (f_ovf), valist, f_ovf); | |
2509 | sav = build (COMPONENT_REF, TREE_TYPE (f_sav), valist, f_sav); | |
2510 | ||
2511 | size = int_size_in_bytes (type); | |
2512 | rsize = (size + UNITS_PER_WORD - 1) / UNITS_PER_WORD; | |
2513 | ||
2514 | container = construct_container (TYPE_MODE (type), type, 0, | |
2515 | REGPARM_MAX, SSE_REGPARM_MAX, intreg, 0); | |
2516 | /* | |
2517 | * Pull the value out of the saved registers ... | |
2518 | */ | |
2519 | ||
2520 | addr_rtx = gen_reg_rtx (Pmode); | |
2521 | ||
2522 | if (container) | |
2523 | { | |
2524 | rtx int_addr_rtx, sse_addr_rtx; | |
2525 | int needed_intregs, needed_sseregs; | |
2526 | int need_temp; | |
2527 | ||
2528 | lab_over = gen_label_rtx (); | |
2529 | lab_false = gen_label_rtx (); | |
8bad7136 | 2530 | |
ad919812 JH |
2531 | examine_argument (TYPE_MODE (type), type, 0, |
2532 | &needed_intregs, &needed_sseregs); | |
2533 | ||
2534 | ||
2535 | need_temp = ((needed_intregs && TYPE_ALIGN (type) > 64) | |
2536 | || TYPE_ALIGN (type) > 128); | |
2537 | ||
2538 | /* In case we are passing structure, verify that it is consetuctive block | |
2539 | on the register save area. If not we need to do moves. */ | |
2540 | if (!need_temp && !REG_P (container)) | |
2541 | { | |
2542 | /* Verify that all registers are strictly consetuctive */ | |
2543 | if (SSE_REGNO_P (REGNO (XEXP (XVECEXP (container, 0, 0), 0)))) | |
2544 | { | |
2545 | int i; | |
2546 | ||
2547 | for (i = 0; i < XVECLEN (container, 0) && !need_temp; i++) | |
2548 | { | |
2549 | rtx slot = XVECEXP (container, 0, i); | |
2550 | if (REGNO (XEXP (slot, 0)) != FIRST_SSE_REG + (unsigned int)i | |
2551 | || INTVAL (XEXP (slot, 1)) != i * 16) | |
2552 | need_temp = 1; | |
2553 | } | |
2554 | } | |
2555 | else | |
2556 | { | |
2557 | int i; | |
2558 | ||
2559 | for (i = 0; i < XVECLEN (container, 0) && !need_temp; i++) | |
2560 | { | |
2561 | rtx slot = XVECEXP (container, 0, i); | |
2562 | if (REGNO (XEXP (slot, 0)) != (unsigned int)i | |
2563 | || INTVAL (XEXP (slot, 1)) != i * 8) | |
2564 | need_temp = 1; | |
2565 | } | |
2566 | } | |
2567 | } | |
2568 | if (!need_temp) | |
2569 | { | |
2570 | int_addr_rtx = addr_rtx; | |
2571 | sse_addr_rtx = addr_rtx; | |
2572 | } | |
2573 | else | |
2574 | { | |
2575 | int_addr_rtx = gen_reg_rtx (Pmode); | |
2576 | sse_addr_rtx = gen_reg_rtx (Pmode); | |
2577 | } | |
2578 | /* First ensure that we fit completely in registers. */ | |
2579 | if (needed_intregs) | |
2580 | { | |
2581 | emit_cmp_and_jump_insns (expand_expr | |
2582 | (gpr, NULL_RTX, SImode, EXPAND_NORMAL), | |
2583 | GEN_INT ((REGPARM_MAX - needed_intregs + | |
2584 | 1) * 8), GE, const1_rtx, SImode, | |
d43e0b7d | 2585 | 1, lab_false); |
ad919812 JH |
2586 | } |
2587 | if (needed_sseregs) | |
2588 | { | |
2589 | emit_cmp_and_jump_insns (expand_expr | |
2590 | (fpr, NULL_RTX, SImode, EXPAND_NORMAL), | |
2591 | GEN_INT ((SSE_REGPARM_MAX - | |
2592 | needed_sseregs + 1) * 16 + | |
2593 | REGPARM_MAX * 8), GE, const1_rtx, | |
d43e0b7d | 2594 | SImode, 1, lab_false); |
ad919812 JH |
2595 | } |
2596 | ||
2597 | /* Compute index to start of area used for integer regs. */ | |
2598 | if (needed_intregs) | |
2599 | { | |
2600 | t = build (PLUS_EXPR, ptr_type_node, sav, gpr); | |
2601 | r = expand_expr (t, int_addr_rtx, Pmode, EXPAND_NORMAL); | |
2602 | if (r != int_addr_rtx) | |
2603 | emit_move_insn (int_addr_rtx, r); | |
2604 | } | |
2605 | if (needed_sseregs) | |
2606 | { | |
2607 | t = build (PLUS_EXPR, ptr_type_node, sav, fpr); | |
2608 | r = expand_expr (t, sse_addr_rtx, Pmode, EXPAND_NORMAL); | |
2609 | if (r != sse_addr_rtx) | |
2610 | emit_move_insn (sse_addr_rtx, r); | |
2611 | } | |
2612 | if (need_temp) | |
2613 | { | |
2614 | int i; | |
2615 | rtx mem; | |
2616 | ||
b932f770 JH |
2617 | /* Never use the memory itself, as it has the alias set. */ |
2618 | addr_rtx = XEXP (assign_temp (type, 0, 1, 0), 0); | |
2619 | mem = gen_rtx_MEM (BLKmode, addr_rtx); | |
0692acba | 2620 | set_mem_alias_set (mem, get_varargs_alias_set ()); |
8ac61af7 | 2621 | set_mem_align (mem, BITS_PER_UNIT); |
b932f770 | 2622 | |
ad919812 JH |
2623 | for (i = 0; i < XVECLEN (container, 0); i++) |
2624 | { | |
2625 | rtx slot = XVECEXP (container, 0, i); | |
2626 | rtx reg = XEXP (slot, 0); | |
2627 | enum machine_mode mode = GET_MODE (reg); | |
2628 | rtx src_addr; | |
2629 | rtx src_mem; | |
2630 | int src_offset; | |
2631 | rtx dest_mem; | |
2632 | ||
2633 | if (SSE_REGNO_P (REGNO (reg))) | |
2634 | { | |
2635 | src_addr = sse_addr_rtx; | |
2636 | src_offset = (REGNO (reg) - FIRST_SSE_REG) * 16; | |
2637 | } | |
2638 | else | |
2639 | { | |
2640 | src_addr = int_addr_rtx; | |
2641 | src_offset = REGNO (reg) * 8; | |
2642 | } | |
2643 | src_mem = gen_rtx_MEM (mode, src_addr); | |
0692acba | 2644 | set_mem_alias_set (src_mem, get_varargs_alias_set ()); |
ad919812 JH |
2645 | src_mem = adjust_address (src_mem, mode, src_offset); |
2646 | dest_mem = adjust_address (mem, mode, INTVAL (XEXP (slot, 1))); | |
ad919812 JH |
2647 | emit_move_insn (dest_mem, src_mem); |
2648 | } | |
2649 | } | |
2650 | ||
2651 | if (needed_intregs) | |
2652 | { | |
2653 | t = | |
2654 | build (PLUS_EXPR, TREE_TYPE (gpr), gpr, | |
2655 | build_int_2 (needed_intregs * 8, 0)); | |
2656 | t = build (MODIFY_EXPR, TREE_TYPE (gpr), gpr, t); | |
2657 | TREE_SIDE_EFFECTS (t) = 1; | |
2658 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2659 | } | |
2660 | if (needed_sseregs) | |
2661 | { | |
2662 | t = | |
2663 | build (PLUS_EXPR, TREE_TYPE (fpr), fpr, | |
2664 | build_int_2 (needed_sseregs * 16, 0)); | |
2665 | t = build (MODIFY_EXPR, TREE_TYPE (fpr), fpr, t); | |
2666 | TREE_SIDE_EFFECTS (t) = 1; | |
2667 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2668 | } | |
2669 | ||
2670 | emit_jump_insn (gen_jump (lab_over)); | |
2671 | emit_barrier (); | |
2672 | emit_label (lab_false); | |
2673 | } | |
2674 | ||
2675 | /* ... otherwise out of the overflow area. */ | |
2676 | ||
2677 | /* Care for on-stack alignment if needed. */ | |
2678 | if (FUNCTION_ARG_BOUNDARY (VOIDmode, type) <= 64) | |
2679 | t = ovf; | |
2680 | else | |
2681 | { | |
2682 | HOST_WIDE_INT align = FUNCTION_ARG_BOUNDARY (VOIDmode, type) / 8; | |
2683 | t = build (PLUS_EXPR, TREE_TYPE (ovf), ovf, build_int_2 (align - 1, 0)); | |
2684 | t = build (BIT_AND_EXPR, TREE_TYPE (t), t, build_int_2 (-align, -1)); | |
2685 | } | |
2686 | t = save_expr (t); | |
2687 | ||
2688 | r = expand_expr (t, addr_rtx, Pmode, EXPAND_NORMAL); | |
2689 | if (r != addr_rtx) | |
2690 | emit_move_insn (addr_rtx, r); | |
2691 | ||
2692 | t = | |
2693 | build (PLUS_EXPR, TREE_TYPE (t), t, | |
2694 | build_int_2 (rsize * UNITS_PER_WORD, 0)); | |
2695 | t = build (MODIFY_EXPR, TREE_TYPE (ovf), ovf, t); | |
2696 | TREE_SIDE_EFFECTS (t) = 1; | |
2697 | expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); | |
2698 | ||
2699 | if (container) | |
2700 | emit_label (lab_over); | |
2701 | ||
ad919812 JH |
2702 | return addr_rtx; |
2703 | } | |
2704 | \f | |
7dd4b4a3 JH |
2705 | /* Return nonzero if OP is general operand representable on x86_64. */ |
2706 | ||
2707 | int | |
2708 | x86_64_general_operand (op, mode) | |
2709 | rtx op; | |
2710 | enum machine_mode mode; | |
2711 | { | |
2712 | if (!TARGET_64BIT) | |
2713 | return general_operand (op, mode); | |
2714 | if (nonimmediate_operand (op, mode)) | |
2715 | return 1; | |
2716 | return x86_64_sign_extended_value (op); | |
2717 | } | |
2718 | ||
2719 | /* Return nonzero if OP is general operand representable on x86_64 | |
d6a7951f | 2720 | as either sign extended or zero extended constant. */ |
7dd4b4a3 JH |
2721 | |
2722 | int | |
2723 | x86_64_szext_general_operand (op, mode) | |
2724 | rtx op; | |
2725 | enum machine_mode mode; | |
2726 | { | |
2727 | if (!TARGET_64BIT) | |
2728 | return general_operand (op, mode); | |
2729 | if (nonimmediate_operand (op, mode)) | |
2730 | return 1; | |
2731 | return x86_64_sign_extended_value (op) || x86_64_zero_extended_value (op); | |
2732 | } | |
2733 | ||
2734 | /* Return nonzero if OP is nonmemory operand representable on x86_64. */ | |
2735 | ||
2736 | int | |
2737 | x86_64_nonmemory_operand (op, mode) | |
2738 | rtx op; | |
2739 | enum machine_mode mode; | |
2740 | { | |
2741 | if (!TARGET_64BIT) | |
2742 | return nonmemory_operand (op, mode); | |
2743 | if (register_operand (op, mode)) | |
2744 | return 1; | |
2745 | return x86_64_sign_extended_value (op); | |
2746 | } | |
2747 | ||
2748 | /* Return nonzero if OP is nonmemory operand acceptable by movabs patterns. */ | |
2749 | ||
2750 | int | |
2751 | x86_64_movabs_operand (op, mode) | |
2752 | rtx op; | |
2753 | enum machine_mode mode; | |
2754 | { | |
2755 | if (!TARGET_64BIT || !flag_pic) | |
2756 | return nonmemory_operand (op, mode); | |
2757 | if (register_operand (op, mode) || x86_64_sign_extended_value (op)) | |
2758 | return 1; | |
2759 | if (CONSTANT_P (op) && !symbolic_reference_mentioned_p (op)) | |
2760 | return 1; | |
2761 | return 0; | |
2762 | } | |
2763 | ||
2764 | /* Return nonzero if OP is nonmemory operand representable on x86_64. */ | |
2765 | ||
2766 | int | |
2767 | x86_64_szext_nonmemory_operand (op, mode) | |
2768 | rtx op; | |
2769 | enum machine_mode mode; | |
2770 | { | |
2771 | if (!TARGET_64BIT) | |
2772 | return nonmemory_operand (op, mode); | |
2773 | if (register_operand (op, mode)) | |
2774 | return 1; | |
2775 | return x86_64_sign_extended_value (op) || x86_64_zero_extended_value (op); | |
2776 | } | |
2777 | ||
2778 | /* Return nonzero if OP is immediate operand representable on x86_64. */ | |
2779 | ||
2780 | int | |
2781 | x86_64_immediate_operand (op, mode) | |
2782 | rtx op; | |
2783 | enum machine_mode mode; | |
2784 | { | |
2785 | if (!TARGET_64BIT) | |
2786 | return immediate_operand (op, mode); | |
2787 | return x86_64_sign_extended_value (op); | |
2788 | } | |
2789 | ||
2790 | /* Return nonzero if OP is immediate operand representable on x86_64. */ | |
2791 | ||
2792 | int | |
2793 | x86_64_zext_immediate_operand (op, mode) | |
2794 | rtx op; | |
2795 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2796 | { | |
2797 | return x86_64_zero_extended_value (op); | |
2798 | } | |
2799 | ||
8bad7136 JL |
2800 | /* Return nonzero if OP is (const_int 1), else return zero. */ |
2801 | ||
2802 | int | |
2803 | const_int_1_operand (op, mode) | |
2804 | rtx op; | |
2805 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2806 | { | |
2807 | return (GET_CODE (op) == CONST_INT && INTVAL (op) == 1); | |
2808 | } | |
2809 | ||
e075ae69 RH |
2810 | /* Returns 1 if OP is either a symbol reference or a sum of a symbol |
2811 | reference and a constant. */ | |
b08de47e MM |
2812 | |
2813 | int | |
e075ae69 RH |
2814 | symbolic_operand (op, mode) |
2815 | register rtx op; | |
2816 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2a2ab3f9 | 2817 | { |
e075ae69 | 2818 | switch (GET_CODE (op)) |
2a2ab3f9 | 2819 | { |
e075ae69 RH |
2820 | case SYMBOL_REF: |
2821 | case LABEL_REF: | |
2822 | return 1; | |
2823 | ||
2824 | case CONST: | |
2825 | op = XEXP (op, 0); | |
2826 | if (GET_CODE (op) == SYMBOL_REF | |
2827 | || GET_CODE (op) == LABEL_REF | |
2828 | || (GET_CODE (op) == UNSPEC | |
6eb791fc JH |
2829 | && (XINT (op, 1) == 6 |
2830 | || XINT (op, 1) == 7 | |
2831 | || XINT (op, 1) == 15))) | |
e075ae69 RH |
2832 | return 1; |
2833 | if (GET_CODE (op) != PLUS | |
2834 | || GET_CODE (XEXP (op, 1)) != CONST_INT) | |
2835 | return 0; | |
2836 | ||
2837 | op = XEXP (op, 0); | |
2838 | if (GET_CODE (op) == SYMBOL_REF | |
2839 | || GET_CODE (op) == LABEL_REF) | |
2840 | return 1; | |
2841 | /* Only @GOTOFF gets offsets. */ | |
2842 | if (GET_CODE (op) != UNSPEC | |
2843 | || XINT (op, 1) != 7) | |
2844 | return 0; | |
2845 | ||
2846 | op = XVECEXP (op, 0, 0); | |
2847 | if (GET_CODE (op) == SYMBOL_REF | |
2848 | || GET_CODE (op) == LABEL_REF) | |
2849 | return 1; | |
2850 | return 0; | |
2851 | ||
2852 | default: | |
2853 | return 0; | |
2a2ab3f9 JVA |
2854 | } |
2855 | } | |
2a2ab3f9 | 2856 | |
e075ae69 | 2857 | /* Return true if the operand contains a @GOT or @GOTOFF reference. */ |
3b3c6a3f | 2858 | |
e075ae69 RH |
2859 | int |
2860 | pic_symbolic_operand (op, mode) | |
2861 | register rtx op; | |
2862 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2863 | { | |
6eb791fc JH |
2864 | if (GET_CODE (op) != CONST) |
2865 | return 0; | |
2866 | op = XEXP (op, 0); | |
2867 | if (TARGET_64BIT) | |
2868 | { | |
2869 | if (GET_CODE (XEXP (op, 0)) == UNSPEC) | |
2870 | return 1; | |
2871 | } | |
2872 | else | |
2a2ab3f9 | 2873 | { |
e075ae69 RH |
2874 | if (GET_CODE (op) == UNSPEC) |
2875 | return 1; | |
2876 | if (GET_CODE (op) != PLUS | |
2877 | || GET_CODE (XEXP (op, 1)) != CONST_INT) | |
2878 | return 0; | |
2879 | op = XEXP (op, 0); | |
2880 | if (GET_CODE (op) == UNSPEC) | |
2881 | return 1; | |
2a2ab3f9 | 2882 | } |
e075ae69 | 2883 | return 0; |
2a2ab3f9 | 2884 | } |
2a2ab3f9 | 2885 | |
623fe810 RH |
2886 | /* Return true if OP is a symbolic operand that resolves locally. */ |
2887 | ||
2888 | static int | |
2889 | local_symbolic_operand (op, mode) | |
2890 | rtx op; | |
2891 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2892 | { | |
2893 | if (GET_CODE (op) == LABEL_REF) | |
2894 | return 1; | |
2895 | ||
2896 | if (GET_CODE (op) == CONST | |
2897 | && GET_CODE (XEXP (op, 0)) == PLUS | |
2898 | && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT) | |
2899 | op = XEXP (XEXP (op, 0), 0); | |
2900 | ||
2901 | if (GET_CODE (op) != SYMBOL_REF) | |
2902 | return 0; | |
2903 | ||
2904 | /* These we've been told are local by varasm and encode_section_info | |
2905 | respectively. */ | |
2906 | if (CONSTANT_POOL_ADDRESS_P (op) || SYMBOL_REF_FLAG (op)) | |
2907 | return 1; | |
2908 | ||
2909 | /* There is, however, a not insubstantial body of code in the rest of | |
2910 | the compiler that assumes it can just stick the results of | |
2911 | ASM_GENERATE_INTERNAL_LABEL in a symbol_ref and have done. */ | |
2912 | /* ??? This is a hack. Should update the body of the compiler to | |
2913 | always create a DECL an invoke ENCODE_SECTION_INFO. */ | |
2914 | if (strncmp (XSTR (op, 0), internal_label_prefix, | |
2915 | internal_label_prefix_len) == 0) | |
2916 | return 1; | |
2917 | ||
2918 | return 0; | |
2919 | } | |
2920 | ||
28d52ffb RH |
2921 | /* Test for a valid operand for a call instruction. Don't allow the |
2922 | arg pointer register or virtual regs since they may decay into | |
2923 | reg + const, which the patterns can't handle. */ | |
2a2ab3f9 | 2924 | |
e075ae69 RH |
2925 | int |
2926 | call_insn_operand (op, mode) | |
2927 | rtx op; | |
2928 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2929 | { | |
e075ae69 RH |
2930 | /* Disallow indirect through a virtual register. This leads to |
2931 | compiler aborts when trying to eliminate them. */ | |
2932 | if (GET_CODE (op) == REG | |
2933 | && (op == arg_pointer_rtx | |
564d80f4 | 2934 | || op == frame_pointer_rtx |
e075ae69 RH |
2935 | || (REGNO (op) >= FIRST_PSEUDO_REGISTER |
2936 | && REGNO (op) <= LAST_VIRTUAL_REGISTER))) | |
2937 | return 0; | |
2a2ab3f9 | 2938 | |
28d52ffb RH |
2939 | /* Disallow `call 1234'. Due to varying assembler lameness this |
2940 | gets either rejected or translated to `call .+1234'. */ | |
2941 | if (GET_CODE (op) == CONST_INT) | |
2942 | return 0; | |
2943 | ||
cbbf65e0 RH |
2944 | /* Explicitly allow SYMBOL_REF even if pic. */ |
2945 | if (GET_CODE (op) == SYMBOL_REF) | |
e075ae69 | 2946 | return 1; |
2a2ab3f9 | 2947 | |
cbbf65e0 RH |
2948 | /* Half-pic doesn't allow anything but registers and constants. |
2949 | We've just taken care of the later. */ | |
2950 | if (HALF_PIC_P ()) | |
2951 | return register_operand (op, Pmode); | |
2952 | ||
2953 | /* Otherwise we can allow any general_operand in the address. */ | |
2954 | return general_operand (op, Pmode); | |
e075ae69 | 2955 | } |
79325812 | 2956 | |
e075ae69 RH |
2957 | int |
2958 | constant_call_address_operand (op, mode) | |
2959 | rtx op; | |
2960 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2961 | { | |
eaf19aba JJ |
2962 | if (GET_CODE (op) == CONST |
2963 | && GET_CODE (XEXP (op, 0)) == PLUS | |
2964 | && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT) | |
2965 | op = XEXP (XEXP (op, 0), 0); | |
e1ff012c | 2966 | return GET_CODE (op) == SYMBOL_REF; |
e075ae69 | 2967 | } |
2a2ab3f9 | 2968 | |
e075ae69 | 2969 | /* Match exactly zero and one. */ |
e9a25f70 | 2970 | |
0f290768 | 2971 | int |
e075ae69 RH |
2972 | const0_operand (op, mode) |
2973 | register rtx op; | |
2974 | enum machine_mode mode; | |
2975 | { | |
2976 | return op == CONST0_RTX (mode); | |
2977 | } | |
e9a25f70 | 2978 | |
0f290768 | 2979 | int |
e075ae69 RH |
2980 | const1_operand (op, mode) |
2981 | register rtx op; | |
2982 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2983 | { | |
2984 | return op == const1_rtx; | |
2985 | } | |
2a2ab3f9 | 2986 | |
e075ae69 | 2987 | /* Match 2, 4, or 8. Used for leal multiplicands. */ |
e9a25f70 | 2988 | |
e075ae69 RH |
2989 | int |
2990 | const248_operand (op, mode) | |
2991 | register rtx op; | |
2992 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
2993 | { | |
2994 | return (GET_CODE (op) == CONST_INT | |
2995 | && (INTVAL (op) == 2 || INTVAL (op) == 4 || INTVAL (op) == 8)); | |
2996 | } | |
e9a25f70 | 2997 | |
e075ae69 | 2998 | /* True if this is a constant appropriate for an increment or decremenmt. */ |
81fd0956 | 2999 | |
e075ae69 RH |
3000 | int |
3001 | incdec_operand (op, mode) | |
3002 | register rtx op; | |
0631e0bf | 3003 | enum machine_mode mode ATTRIBUTE_UNUSED; |
e075ae69 | 3004 | { |
f5143c46 | 3005 | /* On Pentium4, the inc and dec operations causes extra dependency on flag |
b4e89e2d JH |
3006 | registers, since carry flag is not set. */ |
3007 | if (TARGET_PENTIUM4 && !optimize_size) | |
3008 | return 0; | |
2b1c08f5 | 3009 | return op == const1_rtx || op == constm1_rtx; |
e075ae69 | 3010 | } |
2a2ab3f9 | 3011 | |
371bc54b JH |
3012 | /* Return nonzero if OP is acceptable as operand of DImode shift |
3013 | expander. */ | |
3014 | ||
3015 | int | |
3016 | shiftdi_operand (op, mode) | |
3017 | rtx op; | |
3018 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
3019 | { | |
3020 | if (TARGET_64BIT) | |
3021 | return nonimmediate_operand (op, mode); | |
3022 | else | |
3023 | return register_operand (op, mode); | |
3024 | } | |
3025 | ||
0f290768 | 3026 | /* Return false if this is the stack pointer, or any other fake |
e075ae69 RH |
3027 | register eliminable to the stack pointer. Otherwise, this is |
3028 | a register operand. | |
2a2ab3f9 | 3029 | |
e075ae69 RH |
3030 | This is used to prevent esp from being used as an index reg. |
3031 | Which would only happen in pathological cases. */ | |
5f1ec3e6 | 3032 | |
e075ae69 RH |
3033 | int |
3034 | reg_no_sp_operand (op, mode) | |
3035 | register rtx op; | |
3036 | enum machine_mode mode; | |
3037 | { | |
3038 | rtx t = op; | |
3039 | if (GET_CODE (t) == SUBREG) | |
3040 | t = SUBREG_REG (t); | |
564d80f4 | 3041 | if (t == stack_pointer_rtx || t == arg_pointer_rtx || t == frame_pointer_rtx) |
e075ae69 | 3042 | return 0; |
2a2ab3f9 | 3043 | |
e075ae69 | 3044 | return register_operand (op, mode); |
2a2ab3f9 | 3045 | } |
b840bfb0 | 3046 | |
915119a5 BS |
3047 | int |
3048 | mmx_reg_operand (op, mode) | |
3049 | register rtx op; | |
bd793c65 | 3050 | enum machine_mode mode ATTRIBUTE_UNUSED; |
915119a5 BS |
3051 | { |
3052 | return MMX_REG_P (op); | |
3053 | } | |
3054 | ||
2c5a510c RH |
3055 | /* Return false if this is any eliminable register. Otherwise |
3056 | general_operand. */ | |
3057 | ||
3058 | int | |
3059 | general_no_elim_operand (op, mode) | |
3060 | register rtx op; | |
3061 | enum machine_mode mode; | |
3062 | { | |
3063 | rtx t = op; | |
3064 | if (GET_CODE (t) == SUBREG) | |
3065 | t = SUBREG_REG (t); | |
3066 | if (t == arg_pointer_rtx || t == frame_pointer_rtx | |
3067 | || t == virtual_incoming_args_rtx || t == virtual_stack_vars_rtx | |
3068 | || t == virtual_stack_dynamic_rtx) | |
3069 | return 0; | |
1020a5ab RH |
3070 | if (REG_P (t) |
3071 | && REGNO (t) >= FIRST_VIRTUAL_REGISTER | |
3072 | && REGNO (t) <= LAST_VIRTUAL_REGISTER) | |
3073 | return 0; | |
2c5a510c RH |
3074 | |
3075 | return general_operand (op, mode); | |
3076 | } | |
3077 | ||
3078 | /* Return false if this is any eliminable register. Otherwise | |
3079 | register_operand or const_int. */ | |
3080 | ||
3081 | int | |
3082 | nonmemory_no_elim_operand (op, mode) | |
3083 | register rtx op; | |
3084 | enum machine_mode mode; | |
3085 | { | |
3086 | rtx t = op; | |
3087 | if (GET_CODE (t) == SUBREG) | |
3088 | t = SUBREG_REG (t); | |
3089 | if (t == arg_pointer_rtx || t == frame_pointer_rtx | |
3090 | || t == virtual_incoming_args_rtx || t == virtual_stack_vars_rtx | |
3091 | || t == virtual_stack_dynamic_rtx) | |
3092 | return 0; | |
3093 | ||
3094 | return GET_CODE (op) == CONST_INT || register_operand (op, mode); | |
3095 | } | |
3096 | ||
e075ae69 | 3097 | /* Return true if op is a Q_REGS class register. */ |
b840bfb0 | 3098 | |
e075ae69 RH |
3099 | int |
3100 | q_regs_operand (op, mode) | |
3101 | register rtx op; | |
3102 | enum machine_mode mode; | |
b840bfb0 | 3103 | { |
e075ae69 RH |
3104 | if (mode != VOIDmode && GET_MODE (op) != mode) |
3105 | return 0; | |
3106 | if (GET_CODE (op) == SUBREG) | |
3107 | op = SUBREG_REG (op); | |
3108 | return QI_REG_P (op); | |
0f290768 | 3109 | } |
b840bfb0 | 3110 | |
e075ae69 | 3111 | /* Return true if op is a NON_Q_REGS class register. */ |
b840bfb0 | 3112 | |
e075ae69 RH |
3113 | int |
3114 | non_q_regs_operand (op, mode) | |
3115 | register rtx op; | |
3116 | enum machine_mode mode; | |
3117 | { | |
3118 | if (mode != VOIDmode && GET_MODE (op) != mode) | |
3119 | return 0; | |
3120 | if (GET_CODE (op) == SUBREG) | |
3121 | op = SUBREG_REG (op); | |
3122 | return NON_QI_REG_P (op); | |
0f290768 | 3123 | } |
b840bfb0 | 3124 | |
915119a5 BS |
3125 | /* Return 1 if OP is a comparison that can be used in the CMPSS/CMPPS |
3126 | insns. */ | |
3127 | int | |
3128 | sse_comparison_operator (op, mode) | |
3129 | rtx op; | |
3130 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
3131 | { | |
3132 | enum rtx_code code = GET_CODE (op); | |
a46d1d38 JH |
3133 | switch (code) |
3134 | { | |
3135 | /* Operations supported directly. */ | |
3136 | case EQ: | |
3137 | case LT: | |
3138 | case LE: | |
3139 | case UNORDERED: | |
3140 | case NE: | |
3141 | case UNGE: | |
3142 | case UNGT: | |
3143 | case ORDERED: | |
3144 | return 1; | |
3145 | /* These are equivalent to ones above in non-IEEE comparisons. */ | |
3146 | case UNEQ: | |
3147 | case UNLT: | |
3148 | case UNLE: | |
3149 | case LTGT: | |
3150 | case GE: | |
3151 | case GT: | |
3152 | return !TARGET_IEEE_FP; | |
3153 | default: | |
3154 | return 0; | |
3155 | } | |
915119a5 | 3156 | } |
9076b9c1 | 3157 | /* Return 1 if OP is a valid comparison operator in valid mode. */ |
e075ae69 | 3158 | int |
9076b9c1 JH |
3159 | ix86_comparison_operator (op, mode) |
3160 | register rtx op; | |
3161 | enum machine_mode mode; | |
e075ae69 | 3162 | { |
9076b9c1 | 3163 | enum machine_mode inmode; |
9a915772 | 3164 | enum rtx_code code = GET_CODE (op); |
3a3677ff RH |
3165 | if (mode != VOIDmode && GET_MODE (op) != mode) |
3166 | return 0; | |
9a915772 JH |
3167 | if (GET_RTX_CLASS (code) != '<') |
3168 | return 0; | |
3169 | inmode = GET_MODE (XEXP (op, 0)); | |
3170 | ||
3171 | if (inmode == CCFPmode || inmode == CCFPUmode) | |
3172 | { | |
3173 | enum rtx_code second_code, bypass_code; | |
3174 | ix86_fp_comparison_codes (code, &bypass_code, &code, &second_code); | |
3175 | return (bypass_code == NIL && second_code == NIL); | |
3176 | } | |
3177 | switch (code) | |
3a3677ff RH |
3178 | { |
3179 | case EQ: case NE: | |
3a3677ff | 3180 | return 1; |
9076b9c1 | 3181 | case LT: case GE: |
7e08e190 | 3182 | if (inmode == CCmode || inmode == CCGCmode |
9076b9c1 JH |
3183 | || inmode == CCGOCmode || inmode == CCNOmode) |
3184 | return 1; | |
3185 | return 0; | |
7e08e190 | 3186 | case LTU: case GTU: case LEU: case ORDERED: case UNORDERED: case GEU: |
7e08e190 | 3187 | if (inmode == CCmode) |
9076b9c1 JH |
3188 | return 1; |
3189 | return 0; | |
3190 | case GT: case LE: | |
7e08e190 | 3191 | if (inmode == CCmode || inmode == CCGCmode || inmode == CCNOmode) |
9076b9c1 JH |
3192 | return 1; |
3193 | return 0; | |
3a3677ff RH |
3194 | default: |
3195 | return 0; | |
3196 | } | |
3197 | } | |
3198 | ||
9076b9c1 | 3199 | /* Return 1 if OP is a comparison operator that can be issued by fcmov. */ |
3a3677ff | 3200 | |
9076b9c1 JH |
3201 | int |
3202 | fcmov_comparison_operator (op, mode) | |
3a3677ff RH |
3203 | register rtx op; |
3204 | enum machine_mode mode; | |
3205 | { | |
b62d22a2 | 3206 | enum machine_mode inmode; |
9a915772 | 3207 | enum rtx_code code = GET_CODE (op); |
3a3677ff RH |
3208 | if (mode != VOIDmode && GET_MODE (op) != mode) |
3209 | return 0; | |
9a915772 JH |
3210 | if (GET_RTX_CLASS (code) != '<') |
3211 | return 0; | |
3212 | inmode = GET_MODE (XEXP (op, 0)); | |
3213 | if (inmode == CCFPmode || inmode == CCFPUmode) | |
3a3677ff | 3214 | { |
9a915772 JH |
3215 | enum rtx_code second_code, bypass_code; |
3216 | ix86_fp_comparison_codes (code, &bypass_code, &code, &second_code); | |
3217 | if (bypass_code != NIL || second_code != NIL) | |
3218 | return 0; | |
3219 | code = ix86_fp_compare_code_to_integer (code); | |
3220 | } | |
3221 | /* i387 supports just limited amount of conditional codes. */ | |
3222 | switch (code) | |
3223 | { | |
3224 | case LTU: case GTU: case LEU: case GEU: | |
3225 | if (inmode == CCmode || inmode == CCFPmode || inmode == CCFPUmode) | |
9076b9c1 JH |
3226 | return 1; |
3227 | return 0; | |
9a915772 JH |
3228 | case ORDERED: case UNORDERED: |
3229 | case EQ: case NE: | |
3230 | return 1; | |
3a3677ff RH |
3231 | default: |
3232 | return 0; | |
3233 | } | |
e075ae69 | 3234 | } |
b840bfb0 | 3235 | |
e9e80858 JH |
3236 | /* Return 1 if OP is a binary operator that can be promoted to wider mode. */ |
3237 | ||
3238 | int | |
3239 | promotable_binary_operator (op, mode) | |
3240 | register rtx op; | |
3241 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
3242 | { | |
3243 | switch (GET_CODE (op)) | |
3244 | { | |
3245 | case MULT: | |
3246 | /* Modern CPUs have same latency for HImode and SImode multiply, | |
3247 | but 386 and 486 do HImode multiply faster. */ | |
3248 | return ix86_cpu > PROCESSOR_I486; | |
3249 | case PLUS: | |
3250 | case AND: | |
3251 | case IOR: | |
3252 | case XOR: | |
3253 | case ASHIFT: | |
3254 | return 1; | |
3255 | default: | |
3256 | return 0; | |
3257 | } | |
3258 | } | |
3259 | ||
e075ae69 RH |
3260 | /* Nearly general operand, but accept any const_double, since we wish |
3261 | to be able to drop them into memory rather than have them get pulled | |
3262 | into registers. */ | |
b840bfb0 | 3263 | |
2a2ab3f9 | 3264 | int |
e075ae69 RH |
3265 | cmp_fp_expander_operand (op, mode) |
3266 | register rtx op; | |
3267 | enum machine_mode mode; | |
2a2ab3f9 | 3268 | { |
e075ae69 | 3269 | if (mode != VOIDmode && mode != GET_MODE (op)) |
0b6b2900 | 3270 | return 0; |
e075ae69 | 3271 | if (GET_CODE (op) == CONST_DOUBLE) |
2a2ab3f9 | 3272 | return 1; |
e075ae69 | 3273 | return general_operand (op, mode); |
2a2ab3f9 JVA |
3274 | } |
3275 | ||
e075ae69 | 3276 | /* Match an SI or HImode register for a zero_extract. */ |
2a2ab3f9 JVA |
3277 | |
3278 | int | |
e075ae69 | 3279 | ext_register_operand (op, mode) |
2a2ab3f9 | 3280 | register rtx op; |
bb5177ac | 3281 | enum machine_mode mode ATTRIBUTE_UNUSED; |
2a2ab3f9 | 3282 | { |
3522082b | 3283 | int regno; |
0d7d98ee JH |
3284 | if ((!TARGET_64BIT || GET_MODE (op) != DImode) |
3285 | && GET_MODE (op) != SImode && GET_MODE (op) != HImode) | |
e075ae69 | 3286 | return 0; |
3522082b JH |
3287 | |
3288 | if (!register_operand (op, VOIDmode)) | |
3289 | return 0; | |
3290 | ||
3291 | /* Be curefull to accept only registers having upper parts. */ | |
3292 | regno = REG_P (op) ? REGNO (op) : REGNO (SUBREG_REG (op)); | |
3293 | return (regno > LAST_VIRTUAL_REGISTER || regno < 4); | |
e075ae69 RH |
3294 | } |
3295 | ||
3296 | /* Return 1 if this is a valid binary floating-point operation. | |
0f290768 | 3297 | OP is the expression matched, and MODE is its mode. */ |
e075ae69 RH |
3298 | |
3299 | int | |
3300 | binary_fp_operator (op, mode) | |
3301 | register rtx op; | |
3302 | enum machine_mode mode; | |
3303 | { | |
3304 | if (mode != VOIDmode && mode != GET_MODE (op)) | |
3305 | return 0; | |
3306 | ||
2a2ab3f9 JVA |
3307 | switch (GET_CODE (op)) |
3308 | { | |
e075ae69 RH |
3309 | case PLUS: |
3310 | case MINUS: | |
3311 | case MULT: | |
3312 | case DIV: | |
3313 | return GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT; | |
e9a25f70 | 3314 | |
2a2ab3f9 JVA |
3315 | default: |
3316 | return 0; | |
3317 | } | |
3318 | } | |
fee2770d | 3319 | |
e075ae69 RH |
3320 | int |
3321 | mult_operator(op, mode) | |
3322 | register rtx op; | |
3323 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
3324 | { | |
3325 | return GET_CODE (op) == MULT; | |
3326 | } | |
3327 | ||
3328 | int | |
3329 | div_operator(op, mode) | |
3330 | register rtx op; | |
3331 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
3332 | { | |
3333 | return GET_CODE (op) == DIV; | |
3334 | } | |
0a726ef1 JL |
3335 | |
3336 | int | |
e075ae69 RH |
3337 | arith_or_logical_operator (op, mode) |
3338 | rtx op; | |
3339 | enum machine_mode mode; | |
0a726ef1 | 3340 | { |
e075ae69 RH |
3341 | return ((mode == VOIDmode || GET_MODE (op) == mode) |
3342 | && (GET_RTX_CLASS (GET_CODE (op)) == 'c' | |
3343 | || GET_RTX_CLASS (GET_CODE (op)) == '2')); | |
0a726ef1 JL |
3344 | } |
3345 | ||
e075ae69 | 3346 | /* Returns 1 if OP is memory operand with a displacement. */ |
fee2770d RS |
3347 | |
3348 | int | |
e075ae69 RH |
3349 | memory_displacement_operand (op, mode) |
3350 | register rtx op; | |
3351 | enum machine_mode mode; | |
4f2c8ebb | 3352 | { |
e075ae69 | 3353 | struct ix86_address parts; |
e9a25f70 | 3354 | |
e075ae69 RH |
3355 | if (! memory_operand (op, mode)) |
3356 | return 0; | |
3357 | ||
3358 | if (! ix86_decompose_address (XEXP (op, 0), &parts)) | |
3359 | abort (); | |
3360 | ||
3361 | return parts.disp != NULL_RTX; | |
4f2c8ebb RS |
3362 | } |
3363 | ||
16189740 | 3364 | /* To avoid problems when jump re-emits comparisons like testqi_ext_ccno_0, |
e075ae69 RH |
3365 | re-recognize the operand to avoid a copy_to_mode_reg that will fail. |
3366 | ||
3367 | ??? It seems likely that this will only work because cmpsi is an | |
3368 | expander, and no actual insns use this. */ | |
4f2c8ebb RS |
3369 | |
3370 | int | |
e075ae69 RH |
3371 | cmpsi_operand (op, mode) |
3372 | rtx op; | |
3373 | enum machine_mode mode; | |
fee2770d | 3374 | { |
b9b2c339 | 3375 | if (nonimmediate_operand (op, mode)) |
e075ae69 RH |
3376 | return 1; |
3377 | ||
3378 | if (GET_CODE (op) == AND | |
3379 | && GET_MODE (op) == SImode | |
3380 | && GET_CODE (XEXP (op, 0)) == ZERO_EXTRACT | |
3381 | && GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT | |
3382 | && GET_CODE (XEXP (XEXP (op, 0), 2)) == CONST_INT | |
3383 | && INTVAL (XEXP (XEXP (op, 0), 1)) == 8 | |
3384 | && INTVAL (XEXP (XEXP (op, 0), 2)) == 8 | |
3385 | && GET_CODE (XEXP (op, 1)) == CONST_INT) | |
fee2770d | 3386 | return 1; |
e9a25f70 | 3387 | |
fee2770d RS |
3388 | return 0; |
3389 | } | |
d784886d | 3390 | |
e075ae69 RH |
3391 | /* Returns 1 if OP is memory operand that can not be represented by the |
3392 | modRM array. */ | |
d784886d RK |
3393 | |
3394 | int | |
e075ae69 | 3395 | long_memory_operand (op, mode) |
d784886d RK |
3396 | register rtx op; |
3397 | enum machine_mode mode; | |
3398 | { | |
e075ae69 | 3399 | if (! memory_operand (op, mode)) |
d784886d RK |
3400 | return 0; |
3401 | ||
e075ae69 | 3402 | return memory_address_length (op) != 0; |
d784886d | 3403 | } |
2247f6ed JH |
3404 | |
3405 | /* Return nonzero if the rtx is known aligned. */ | |
3406 | ||
3407 | int | |
3408 | aligned_operand (op, mode) | |
3409 | rtx op; | |
3410 | enum machine_mode mode; | |
3411 | { | |
3412 | struct ix86_address parts; | |
3413 | ||
3414 | if (!general_operand (op, mode)) | |
3415 | return 0; | |
3416 | ||
0f290768 | 3417 | /* Registers and immediate operands are always "aligned". */ |
2247f6ed JH |
3418 | if (GET_CODE (op) != MEM) |
3419 | return 1; | |
3420 | ||
0f290768 | 3421 | /* Don't even try to do any aligned optimizations with volatiles. */ |
2247f6ed JH |
3422 | if (MEM_VOLATILE_P (op)) |
3423 | return 0; | |
3424 | ||
3425 | op = XEXP (op, 0); | |
3426 | ||
3427 | /* Pushes and pops are only valid on the stack pointer. */ | |
3428 | if (GET_CODE (op) == PRE_DEC | |
3429 | || GET_CODE (op) == POST_INC) | |
3430 | return 1; | |
3431 | ||
3432 | /* Decode the address. */ | |
3433 | if (! ix86_decompose_address (op, &parts)) | |
3434 | abort (); | |
3435 | ||
3436 | /* Look for some component that isn't known to be aligned. */ | |
3437 | if (parts.index) | |
3438 | { | |
3439 | if (parts.scale < 4 | |
bdb429a5 | 3440 | && REGNO_POINTER_ALIGN (REGNO (parts.index)) < 32) |
2247f6ed JH |
3441 | return 0; |
3442 | } | |
3443 | if (parts.base) | |
3444 | { | |
bdb429a5 | 3445 | if (REGNO_POINTER_ALIGN (REGNO (parts.base)) < 32) |
2247f6ed JH |
3446 | return 0; |
3447 | } | |
3448 | if (parts.disp) | |
3449 | { | |
3450 | if (GET_CODE (parts.disp) != CONST_INT | |
3451 | || (INTVAL (parts.disp) & 3) != 0) | |
3452 | return 0; | |
3453 | } | |
3454 | ||
3455 | /* Didn't find one -- this must be an aligned address. */ | |
3456 | return 1; | |
3457 | } | |
e075ae69 RH |
3458 | \f |
3459 | /* Return true if the constant is something that can be loaded with | |
3460 | a special instruction. Only handle 0.0 and 1.0; others are less | |
3461 | worthwhile. */ | |
57dbca5e BS |
3462 | |
3463 | int | |
e075ae69 RH |
3464 | standard_80387_constant_p (x) |
3465 | rtx x; | |
57dbca5e | 3466 | { |
2b04e52b | 3467 | if (GET_CODE (x) != CONST_DOUBLE || !FLOAT_MODE_P (GET_MODE (x))) |
e075ae69 | 3468 | return -1; |
2b04e52b JH |
3469 | /* Note that on the 80387, other constants, such as pi, that we should support |
3470 | too. On some machines, these are much slower to load as standard constant, | |
3471 | than to load from doubles in memory. */ | |
3472 | if (x == CONST0_RTX (GET_MODE (x))) | |
3473 | return 1; | |
3474 | if (x == CONST1_RTX (GET_MODE (x))) | |
3475 | return 2; | |
e075ae69 | 3476 | return 0; |
57dbca5e BS |
3477 | } |
3478 | ||
2b04e52b JH |
3479 | /* Return 1 if X is FP constant we can load to SSE register w/o using memory. |
3480 | */ | |
3481 | int | |
3482 | standard_sse_constant_p (x) | |
3483 | rtx x; | |
3484 | { | |
3485 | if (GET_CODE (x) != CONST_DOUBLE) | |
3486 | return -1; | |
3487 | return (x == CONST0_RTX (GET_MODE (x))); | |
3488 | } | |
3489 | ||
2a2ab3f9 JVA |
3490 | /* Returns 1 if OP contains a symbol reference */ |
3491 | ||
3492 | int | |
3493 | symbolic_reference_mentioned_p (op) | |
3494 | rtx op; | |
3495 | { | |
6f7d635c | 3496 | register const char *fmt; |
2a2ab3f9 JVA |
3497 | register int i; |
3498 | ||
3499 | if (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == LABEL_REF) | |
3500 | return 1; | |
3501 | ||
3502 | fmt = GET_RTX_FORMAT (GET_CODE (op)); | |
3503 | for (i = GET_RTX_LENGTH (GET_CODE (op)) - 1; i >= 0; i--) | |
3504 | { | |
3505 | if (fmt[i] == 'E') | |
3506 | { | |
3507 | register int j; | |
3508 | ||
3509 | for (j = XVECLEN (op, i) - 1; j >= 0; j--) | |
3510 | if (symbolic_reference_mentioned_p (XVECEXP (op, i, j))) | |
3511 | return 1; | |
3512 | } | |
e9a25f70 | 3513 | |
2a2ab3f9 JVA |
3514 | else if (fmt[i] == 'e' && symbolic_reference_mentioned_p (XEXP (op, i))) |
3515 | return 1; | |
3516 | } | |
3517 | ||
3518 | return 0; | |
3519 | } | |
e075ae69 RH |
3520 | |
3521 | /* Return 1 if it is appropriate to emit `ret' instructions in the | |
3522 | body of a function. Do this only if the epilogue is simple, needing a | |
3523 | couple of insns. Prior to reloading, we can't tell how many registers | |
3524 | must be saved, so return 0 then. Return 0 if there is no frame | |
3525 | marker to de-allocate. | |
3526 | ||
3527 | If NON_SAVING_SETJMP is defined and true, then it is not possible | |
3528 | for the epilogue to be simple, so return 0. This is a special case | |
3529 | since NON_SAVING_SETJMP will not cause regs_ever_live to change | |
3530 | until final, but jump_optimize may need to know sooner if a | |
3531 | `return' is OK. */ | |
32b5b1aa SC |
3532 | |
3533 | int | |
e075ae69 | 3534 | ix86_can_use_return_insn_p () |
32b5b1aa | 3535 | { |
4dd2ac2c | 3536 | struct ix86_frame frame; |
9a7372d6 | 3537 | |
e075ae69 RH |
3538 | #ifdef NON_SAVING_SETJMP |
3539 | if (NON_SAVING_SETJMP && current_function_calls_setjmp) | |
3540 | return 0; | |
3541 | #endif | |
9a7372d6 RH |
3542 | |
3543 | if (! reload_completed || frame_pointer_needed) | |
3544 | return 0; | |
32b5b1aa | 3545 | |
9a7372d6 RH |
3546 | /* Don't allow more than 32 pop, since that's all we can do |
3547 | with one instruction. */ | |
3548 | if (current_function_pops_args | |
3549 | && current_function_args_size >= 32768) | |
e075ae69 | 3550 | return 0; |
32b5b1aa | 3551 | |
4dd2ac2c JH |
3552 | ix86_compute_frame_layout (&frame); |
3553 | return frame.to_allocate == 0 && frame.nregs == 0; | |
e075ae69 | 3554 | } |
6189a572 JH |
3555 | \f |
3556 | /* Return 1 if VALUE can be stored in the sign extended immediate field. */ | |
3557 | int | |
3558 | x86_64_sign_extended_value (value) | |
3559 | rtx value; | |
3560 | { | |
3561 | switch (GET_CODE (value)) | |
3562 | { | |
3563 | /* CONST_DOUBLES never match, since HOST_BITS_PER_WIDE_INT is known | |
3564 | to be at least 32 and this all acceptable constants are | |
3565 | represented as CONST_INT. */ | |
3566 | case CONST_INT: | |
3567 | if (HOST_BITS_PER_WIDE_INT == 32) | |
3568 | return 1; | |
3569 | else | |
3570 | { | |
3571 | HOST_WIDE_INT val = trunc_int_for_mode (INTVAL (value), DImode); | |
fa9f36a1 | 3572 | return trunc_int_for_mode (val, SImode) == val; |
6189a572 JH |
3573 | } |
3574 | break; | |
3575 | ||
3576 | /* For certain code models, the symbolic references are known to fit. */ | |
3577 | case SYMBOL_REF: | |
3578 | return ix86_cmodel == CM_SMALL || ix86_cmodel == CM_KERNEL; | |
3579 | ||
3580 | /* For certain code models, the code is near as well. */ | |
3581 | case LABEL_REF: | |
3582 | return ix86_cmodel != CM_LARGE && ix86_cmodel != CM_SMALL_PIC; | |
3583 | ||
3584 | /* We also may accept the offsetted memory references in certain special | |
3585 | cases. */ | |
3586 | case CONST: | |
3587 | if (GET_CODE (XEXP (value, 0)) == UNSPEC | |
3588 | && XVECLEN (XEXP (value, 0), 0) == 1 | |
3589 | && XINT (XEXP (value, 0), 1) == 15) | |
3590 | return 1; | |
3591 | else if (GET_CODE (XEXP (value, 0)) == PLUS) | |
3592 | { | |
3593 | rtx op1 = XEXP (XEXP (value, 0), 0); | |
3594 | rtx op2 = XEXP (XEXP (value, 0), 1); | |
3595 | HOST_WIDE_INT offset; | |
3596 | ||
3597 | if (ix86_cmodel == CM_LARGE) | |
3598 | return 0; | |
3599 | if (GET_CODE (op2) != CONST_INT) | |
3600 | return 0; | |
3601 | offset = trunc_int_for_mode (INTVAL (op2), DImode); | |
3602 | switch (GET_CODE (op1)) | |
3603 | { | |
3604 | case SYMBOL_REF: | |
3605 | /* For CM_SMALL assume that latest object is 1MB before | |
3606 | end of 31bits boundary. We may also accept pretty | |
3607 | large negative constants knowing that all objects are | |
3608 | in the positive half of address space. */ | |
3609 | if (ix86_cmodel == CM_SMALL | |
3610 | && offset < 1024*1024*1024 | |
3611 | && trunc_int_for_mode (offset, SImode) == offset) | |
3612 | return 1; | |
3613 | /* For CM_KERNEL we know that all object resist in the | |
3614 | negative half of 32bits address space. We may not | |
3615 | accept negative offsets, since they may be just off | |
d6a7951f | 3616 | and we may accept pretty large positive ones. */ |
6189a572 JH |
3617 | if (ix86_cmodel == CM_KERNEL |
3618 | && offset > 0 | |
3619 | && trunc_int_for_mode (offset, SImode) == offset) | |
3620 | return 1; | |
3621 | break; | |
3622 | case LABEL_REF: | |
3623 | /* These conditions are similar to SYMBOL_REF ones, just the | |
3624 | constraints for code models differ. */ | |
3625 | if ((ix86_cmodel == CM_SMALL || ix86_cmodel == CM_MEDIUM) | |
3626 | && offset < 1024*1024*1024 | |
3627 | && trunc_int_for_mode (offset, SImode) == offset) | |
3628 | return 1; | |
3629 | if (ix86_cmodel == CM_KERNEL | |
3630 | && offset > 0 | |
3631 | && trunc_int_for_mode (offset, SImode) == offset) | |
3632 | return 1; | |
3633 | break; | |
3634 | default: | |
3635 | return 0; | |
3636 | } | |
3637 | } | |
3638 | return 0; | |
3639 | default: | |
3640 | return 0; | |
3641 | } | |
3642 | } | |
3643 | ||
3644 | /* Return 1 if VALUE can be stored in the zero extended immediate field. */ | |
3645 | int | |
3646 | x86_64_zero_extended_value (value) | |
3647 | rtx value; | |
3648 | { | |
3649 | switch (GET_CODE (value)) | |
3650 | { | |
3651 | case CONST_DOUBLE: | |
3652 | if (HOST_BITS_PER_WIDE_INT == 32) | |
3653 | return (GET_MODE (value) == VOIDmode | |
3654 | && !CONST_DOUBLE_HIGH (value)); | |
3655 | else | |
3656 | return 0; | |
3657 | case CONST_INT: | |
3658 | if (HOST_BITS_PER_WIDE_INT == 32) | |
3659 | return INTVAL (value) >= 0; | |
3660 | else | |
3661 | return !(INTVAL (value) & ~(HOST_WIDE_INT)0xffffffff); | |
3662 | break; | |
3663 | ||
3664 | /* For certain code models, the symbolic references are known to fit. */ | |
3665 | case SYMBOL_REF: | |
3666 | return ix86_cmodel == CM_SMALL; | |
3667 | ||
3668 | /* For certain code models, the code is near as well. */ | |
3669 | case LABEL_REF: | |
3670 | return ix86_cmodel == CM_SMALL || ix86_cmodel == CM_MEDIUM; | |
3671 | ||
3672 | /* We also may accept the offsetted memory references in certain special | |
3673 | cases. */ | |
3674 | case CONST: | |
3675 | if (GET_CODE (XEXP (value, 0)) == PLUS) | |
3676 | { | |
3677 | rtx op1 = XEXP (XEXP (value, 0), 0); | |
3678 | rtx op2 = XEXP (XEXP (value, 0), 1); | |
3679 | ||
3680 | if (ix86_cmodel == CM_LARGE) | |
3681 | return 0; | |
3682 | switch (GET_CODE (op1)) | |
3683 | { | |
3684 | case SYMBOL_REF: | |
3685 | return 0; | |
d6a7951f | 3686 | /* For small code model we may accept pretty large positive |
6189a572 JH |
3687 | offsets, since one bit is available for free. Negative |
3688 | offsets are limited by the size of NULL pointer area | |
3689 | specified by the ABI. */ | |
3690 | if (ix86_cmodel == CM_SMALL | |
3691 | && GET_CODE (op2) == CONST_INT | |
3692 | && trunc_int_for_mode (INTVAL (op2), DImode) > -0x10000 | |
3693 | && (trunc_int_for_mode (INTVAL (op2), SImode) | |
3694 | == INTVAL (op2))) | |
3695 | return 1; | |
3696 | /* ??? For the kernel, we may accept adjustment of | |
3697 | -0x10000000, since we know that it will just convert | |
d6a7951f | 3698 | negative address space to positive, but perhaps this |
6189a572 JH |
3699 | is not worthwhile. */ |
3700 | break; | |
3701 | case LABEL_REF: | |
3702 | /* These conditions are similar to SYMBOL_REF ones, just the | |
3703 | constraints for code models differ. */ | |
3704 | if ((ix86_cmodel == CM_SMALL || ix86_cmodel == CM_MEDIUM) | |
3705 | && GET_CODE (op2) == CONST_INT | |
3706 | && trunc_int_for_mode (INTVAL (op2), DImode) > -0x10000 | |
3707 | && (trunc_int_for_mode (INTVAL (op2), SImode) | |
3708 | == INTVAL (op2))) | |
3709 | return 1; | |
3710 | break; | |
3711 | default: | |
3712 | return 0; | |
3713 | } | |
3714 | } | |
3715 | return 0; | |
3716 | default: | |
3717 | return 0; | |
3718 | } | |
3719 | } | |
6fca22eb RH |
3720 | |
3721 | /* Value should be nonzero if functions must have frame pointers. | |
3722 | Zero means the frame pointer need not be set up (and parms may | |
3723 | be accessed via the stack pointer) in functions that seem suitable. */ | |
3724 | ||
3725 | int | |
3726 | ix86_frame_pointer_required () | |
3727 | { | |
3728 | /* If we accessed previous frames, then the generated code expects | |
3729 | to be able to access the saved ebp value in our frame. */ | |
3730 | if (cfun->machine->accesses_prev_frame) | |
3731 | return 1; | |
a4f31c00 | 3732 | |
6fca22eb RH |
3733 | /* Several x86 os'es need a frame pointer for other reasons, |
3734 | usually pertaining to setjmp. */ | |
3735 | if (SUBTARGET_FRAME_POINTER_REQUIRED) | |
3736 | return 1; | |
3737 | ||
3738 | /* In override_options, TARGET_OMIT_LEAF_FRAME_POINTER turns off | |
3739 | the frame pointer by default. Turn it back on now if we've not | |
3740 | got a leaf function. */ | |
3741 | if (TARGET_OMIT_LEAF_FRAME_POINTER && ! leaf_function_p ()) | |
3742 | return 1; | |
3743 | ||
3744 | return 0; | |
3745 | } | |
3746 | ||
3747 | /* Record that the current function accesses previous call frames. */ | |
3748 | ||
3749 | void | |
3750 | ix86_setup_frame_addresses () | |
3751 | { | |
3752 | cfun->machine->accesses_prev_frame = 1; | |
3753 | } | |
e075ae69 | 3754 | \f |
4cf12e7e | 3755 | static char pic_label_name[32]; |
e9a25f70 | 3756 | |
e075ae69 RH |
3757 | /* This function generates code for -fpic that loads %ebx with |
3758 | the return address of the caller and then returns. */ | |
3759 | ||
3760 | void | |
4cf12e7e | 3761 | ix86_asm_file_end (file) |
e075ae69 | 3762 | FILE *file; |
e075ae69 RH |
3763 | { |
3764 | rtx xops[2]; | |
32b5b1aa | 3765 | |
4cf12e7e RH |
3766 | if (! TARGET_DEEP_BRANCH_PREDICTION || pic_label_name[0] == 0) |
3767 | return; | |
32b5b1aa | 3768 | |
c7f0da1d RH |
3769 | /* ??? Binutils 2.10 and earlier has a linkonce elimination bug related |
3770 | to updating relocations to a section being discarded such that this | |
3771 | doesn't work. Ought to detect this at configure time. */ | |
7c262518 | 3772 | #if 0 |
4cf12e7e RH |
3773 | /* The trick here is to create a linkonce section containing the |
3774 | pic label thunk, but to refer to it with an internal label. | |
3775 | Because the label is internal, we don't have inter-dso name | |
3776 | binding issues on hosts that don't support ".hidden". | |
e9a25f70 | 3777 | |
4cf12e7e RH |
3778 | In order to use these macros, however, we must create a fake |
3779 | function decl. */ | |
7c262518 RH |
3780 | if (targetm.have_named_sections) |
3781 | { | |
3782 | tree decl = build_decl (FUNCTION_DECL, | |
3783 | get_identifier ("i686.get_pc_thunk"), | |
3784 | error_mark_node); | |
3785 | DECL_ONE_ONLY (decl) = 1; | |
3786 | UNIQUE_SECTION (decl, 0); | |
715bdd29 | 3787 | named_section (decl, NULL); |
7c262518 RH |
3788 | } |
3789 | else | |
4cf12e7e | 3790 | #else |
7c262518 | 3791 | text_section (); |
4cf12e7e | 3792 | #endif |
0afeb08a | 3793 | |
4cf12e7e RH |
3794 | /* This used to call ASM_DECLARE_FUNCTION_NAME() but since it's an |
3795 | internal (non-global) label that's being emitted, it didn't make | |
3796 | sense to have .type information for local labels. This caused | |
3797 | the SCO OpenServer 5.0.4 ELF assembler grief (why are you giving | |
3798 | me debug info for a label that you're declaring non-global?) this | |
3799 | was changed to call ASM_OUTPUT_LABEL() instead. */ | |
3800 | ||
3801 | ASM_OUTPUT_LABEL (file, pic_label_name); | |
3802 | ||
3803 | xops[0] = pic_offset_table_rtx; | |
3804 | xops[1] = gen_rtx_MEM (SImode, stack_pointer_rtx); | |
3805 | output_asm_insn ("mov{l}\t{%1, %0|%0, %1}", xops); | |
3806 | output_asm_insn ("ret", xops); | |
32b5b1aa | 3807 | } |
32b5b1aa | 3808 | |
e075ae69 RH |
3809 | void |
3810 | load_pic_register () | |
32b5b1aa | 3811 | { |
e075ae69 | 3812 | rtx gotsym, pclab; |
32b5b1aa | 3813 | |
0d7d98ee JH |
3814 | if (TARGET_64BIT) |
3815 | abort(); | |
3816 | ||
a8a05998 | 3817 | gotsym = gen_rtx_SYMBOL_REF (Pmode, "_GLOBAL_OFFSET_TABLE_"); |
32b5b1aa | 3818 | |
e075ae69 | 3819 | if (TARGET_DEEP_BRANCH_PREDICTION) |
32b5b1aa | 3820 | { |
4cf12e7e RH |
3821 | if (! pic_label_name[0]) |
3822 | ASM_GENERATE_INTERNAL_LABEL (pic_label_name, "LPR", 0); | |
e075ae69 | 3823 | pclab = gen_rtx_MEM (QImode, gen_rtx_SYMBOL_REF (Pmode, pic_label_name)); |
32b5b1aa | 3824 | } |
e075ae69 | 3825 | else |
e5cb57e8 | 3826 | { |
e075ae69 | 3827 | pclab = gen_rtx_LABEL_REF (VOIDmode, gen_label_rtx ()); |
e5cb57e8 | 3828 | } |
e5cb57e8 | 3829 | |
e075ae69 | 3830 | emit_insn (gen_prologue_get_pc (pic_offset_table_rtx, pclab)); |
2a2ab3f9 | 3831 | |
e075ae69 RH |
3832 | if (! TARGET_DEEP_BRANCH_PREDICTION) |
3833 | emit_insn (gen_popsi1 (pic_offset_table_rtx)); | |
79325812 | 3834 | |
e075ae69 | 3835 | emit_insn (gen_prologue_set_got (pic_offset_table_rtx, gotsym, pclab)); |
e9a25f70 | 3836 | } |
8dfe5673 | 3837 | |
0d7d98ee | 3838 | /* Generate an "push" pattern for input ARG. */ |
e9a25f70 | 3839 | |
e075ae69 RH |
3840 | static rtx |
3841 | gen_push (arg) | |
3842 | rtx arg; | |
e9a25f70 | 3843 | { |
c5c76735 | 3844 | return gen_rtx_SET (VOIDmode, |
0d7d98ee JH |
3845 | gen_rtx_MEM (Pmode, |
3846 | gen_rtx_PRE_DEC (Pmode, | |
c5c76735 JL |
3847 | stack_pointer_rtx)), |
3848 | arg); | |
e9a25f70 JL |
3849 | } |
3850 | ||
4dd2ac2c JH |
3851 | /* Return 1 if we need to save REGNO. */ |
3852 | static int | |
1020a5ab RH |
3853 | ix86_save_reg (regno, maybe_eh_return) |
3854 | int regno; | |
37a58036 | 3855 | int maybe_eh_return; |
1020a5ab RH |
3856 | { |
3857 | if (flag_pic | |
3858 | && ! TARGET_64BIT | |
3859 | && regno == PIC_OFFSET_TABLE_REGNUM | |
3860 | && (current_function_uses_pic_offset_table | |
3861 | || current_function_uses_const_pool | |
3862 | || current_function_calls_eh_return)) | |
3863 | return 1; | |
3864 | ||
3865 | if (current_function_calls_eh_return && maybe_eh_return) | |
3866 | { | |
3867 | unsigned i; | |
3868 | for (i = 0; ; i++) | |
3869 | { | |
3870 | unsigned test = EH_RETURN_DATA_REGNO(i); | |
3871 | if (test == INVALID_REGNUM) | |
3872 | break; | |
3873 | if (test == (unsigned) regno) | |
3874 | return 1; | |
3875 | } | |
3876 | } | |
4dd2ac2c | 3877 | |
1020a5ab RH |
3878 | return (regs_ever_live[regno] |
3879 | && !call_used_regs[regno] | |
3880 | && !fixed_regs[regno] | |
3881 | && (regno != HARD_FRAME_POINTER_REGNUM || !frame_pointer_needed)); | |
4dd2ac2c JH |
3882 | } |
3883 | ||
0903fcab JH |
3884 | /* Return number of registers to be saved on the stack. */ |
3885 | ||
3886 | static int | |
3887 | ix86_nsaved_regs () | |
3888 | { | |
3889 | int nregs = 0; | |
0903fcab JH |
3890 | int regno; |
3891 | ||
4dd2ac2c | 3892 | for (regno = FIRST_PSEUDO_REGISTER - 1; regno >= 0; regno--) |
1020a5ab | 3893 | if (ix86_save_reg (regno, true)) |
4dd2ac2c | 3894 | nregs++; |
0903fcab JH |
3895 | return nregs; |
3896 | } | |
3897 | ||
3898 | /* Return the offset between two registers, one to be eliminated, and the other | |
3899 | its replacement, at the start of a routine. */ | |
3900 | ||
3901 | HOST_WIDE_INT | |
3902 | ix86_initial_elimination_offset (from, to) | |
3903 | int from; | |
3904 | int to; | |
3905 | { | |
4dd2ac2c JH |
3906 | struct ix86_frame frame; |
3907 | ix86_compute_frame_layout (&frame); | |
564d80f4 JH |
3908 | |
3909 | if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM) | |
4dd2ac2c | 3910 | return frame.hard_frame_pointer_offset; |
564d80f4 JH |
3911 | else if (from == FRAME_POINTER_REGNUM |
3912 | && to == HARD_FRAME_POINTER_REGNUM) | |
4dd2ac2c | 3913 | return frame.hard_frame_pointer_offset - frame.frame_pointer_offset; |
0903fcab JH |
3914 | else |
3915 | { | |
564d80f4 JH |
3916 | if (to != STACK_POINTER_REGNUM) |
3917 | abort (); | |
3918 | else if (from == ARG_POINTER_REGNUM) | |
4dd2ac2c | 3919 | return frame.stack_pointer_offset; |
564d80f4 JH |
3920 | else if (from != FRAME_POINTER_REGNUM) |
3921 | abort (); | |
0903fcab | 3922 | else |
4dd2ac2c | 3923 | return frame.stack_pointer_offset - frame.frame_pointer_offset; |
0903fcab JH |
3924 | } |
3925 | } | |
3926 | ||
4dd2ac2c | 3927 | /* Fill structure ix86_frame about frame of currently computed function. */ |
0f290768 | 3928 | |
4dd2ac2c JH |
3929 | static void |
3930 | ix86_compute_frame_layout (frame) | |
3931 | struct ix86_frame *frame; | |
65954bd8 | 3932 | { |
65954bd8 | 3933 | HOST_WIDE_INT total_size; |
564d80f4 | 3934 | int stack_alignment_needed = cfun->stack_alignment_needed / BITS_PER_UNIT; |
44affdae JH |
3935 | int offset; |
3936 | int preferred_alignment = cfun->preferred_stack_boundary / BITS_PER_UNIT; | |
4dd2ac2c | 3937 | HOST_WIDE_INT size = get_frame_size (); |
65954bd8 | 3938 | |
4dd2ac2c | 3939 | frame->nregs = ix86_nsaved_regs (); |
564d80f4 | 3940 | total_size = size; |
65954bd8 | 3941 | |
4dd2ac2c JH |
3942 | /* Skip return value and save base pointer. */ |
3943 | offset = frame_pointer_needed ? UNITS_PER_WORD * 2 : UNITS_PER_WORD; | |
3944 | ||
3945 | frame->hard_frame_pointer_offset = offset; | |
564d80f4 | 3946 | |
fcbfaa65 RK |
3947 | /* Do some sanity checking of stack_alignment_needed and |
3948 | preferred_alignment, since i386 port is the only using those features | |
f710504c | 3949 | that may break easily. */ |
564d80f4 | 3950 | |
44affdae JH |
3951 | if (size && !stack_alignment_needed) |
3952 | abort (); | |
44affdae JH |
3953 | if (preferred_alignment < STACK_BOUNDARY / BITS_PER_UNIT) |
3954 | abort (); | |
3955 | if (preferred_alignment > PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT) | |
3956 | abort (); | |
3957 | if (stack_alignment_needed > PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT) | |
3958 | abort (); | |
564d80f4 | 3959 | |
4dd2ac2c JH |
3960 | if (stack_alignment_needed < STACK_BOUNDARY / BITS_PER_UNIT) |
3961 | stack_alignment_needed = STACK_BOUNDARY / BITS_PER_UNIT; | |
564d80f4 | 3962 | |
4dd2ac2c JH |
3963 | /* Register save area */ |
3964 | offset += frame->nregs * UNITS_PER_WORD; | |
65954bd8 | 3965 | |
8362f420 JH |
3966 | /* Va-arg area */ |
3967 | if (ix86_save_varrargs_registers) | |
3968 | { | |
3969 | offset += X86_64_VARARGS_SIZE; | |
3970 | frame->va_arg_size = X86_64_VARARGS_SIZE; | |
3971 | } | |
3972 | else | |
3973 | frame->va_arg_size = 0; | |
3974 | ||
4dd2ac2c JH |
3975 | /* Align start of frame for local function. */ |
3976 | frame->padding1 = ((offset + stack_alignment_needed - 1) | |
3977 | & -stack_alignment_needed) - offset; | |
f73ad30e | 3978 | |
4dd2ac2c | 3979 | offset += frame->padding1; |
65954bd8 | 3980 | |
4dd2ac2c JH |
3981 | /* Frame pointer points here. */ |
3982 | frame->frame_pointer_offset = offset; | |
54ff41b7 | 3983 | |
4dd2ac2c | 3984 | offset += size; |
65954bd8 | 3985 | |
4dd2ac2c | 3986 | /* Add outgoing arguments area. */ |
f73ad30e | 3987 | if (ACCUMULATE_OUTGOING_ARGS) |
4dd2ac2c JH |
3988 | { |
3989 | offset += current_function_outgoing_args_size; | |
3990 | frame->outgoing_arguments_size = current_function_outgoing_args_size; | |
3991 | } | |
3992 | else | |
3993 | frame->outgoing_arguments_size = 0; | |
564d80f4 | 3994 | |
4dd2ac2c JH |
3995 | /* Align stack boundary. */ |
3996 | frame->padding2 = ((offset + preferred_alignment - 1) | |
3997 | & -preferred_alignment) - offset; | |
3998 | ||
3999 | offset += frame->padding2; | |
4000 | ||
4001 | /* We've reached end of stack frame. */ | |
4002 | frame->stack_pointer_offset = offset; | |
4003 | ||
4004 | /* Size prologue needs to allocate. */ | |
4005 | frame->to_allocate = | |
4006 | (size + frame->padding1 + frame->padding2 | |
8362f420 | 4007 | + frame->outgoing_arguments_size + frame->va_arg_size); |
4dd2ac2c | 4008 | |
8362f420 JH |
4009 | if (TARGET_64BIT && TARGET_RED_ZONE && current_function_sp_is_unchanging |
4010 | && current_function_is_leaf) | |
4011 | { | |
4012 | frame->red_zone_size = frame->to_allocate; | |
4013 | if (frame->red_zone_size > RED_ZONE_SIZE - RED_ZONE_RESERVE) | |
4014 | frame->red_zone_size = RED_ZONE_SIZE - RED_ZONE_RESERVE; | |
4015 | } | |
4016 | else | |
4017 | frame->red_zone_size = 0; | |
4018 | frame->to_allocate -= frame->red_zone_size; | |
4019 | frame->stack_pointer_offset -= frame->red_zone_size; | |
4dd2ac2c JH |
4020 | #if 0 |
4021 | fprintf (stderr, "nregs: %i\n", frame->nregs); | |
4022 | fprintf (stderr, "size: %i\n", size); | |
4023 | fprintf (stderr, "alignment1: %i\n", stack_alignment_needed); | |
4024 | fprintf (stderr, "padding1: %i\n", frame->padding1); | |
8362f420 | 4025 | fprintf (stderr, "va_arg: %i\n", frame->va_arg_size); |
4dd2ac2c JH |
4026 | fprintf (stderr, "padding2: %i\n", frame->padding2); |
4027 | fprintf (stderr, "to_allocate: %i\n", frame->to_allocate); | |
8362f420 | 4028 | fprintf (stderr, "red_zone_size: %i\n", frame->red_zone_size); |
4dd2ac2c JH |
4029 | fprintf (stderr, "frame_pointer_offset: %i\n", frame->frame_pointer_offset); |
4030 | fprintf (stderr, "hard_frame_pointer_offset: %i\n", | |
4031 | frame->hard_frame_pointer_offset); | |
4032 | fprintf (stderr, "stack_pointer_offset: %i\n", frame->stack_pointer_offset); | |
4033 | #endif | |
65954bd8 JL |
4034 | } |
4035 | ||
0903fcab JH |
4036 | /* Emit code to save registers in the prologue. */ |
4037 | ||
4038 | static void | |
4039 | ix86_emit_save_regs () | |
4040 | { | |
4041 | register int regno; | |
0903fcab | 4042 | rtx insn; |
0903fcab | 4043 | |
4dd2ac2c | 4044 | for (regno = FIRST_PSEUDO_REGISTER - 1; regno >= 0; regno--) |
1020a5ab | 4045 | if (ix86_save_reg (regno, true)) |
0903fcab | 4046 | { |
0d7d98ee | 4047 | insn = emit_insn (gen_push (gen_rtx_REG (Pmode, regno))); |
0903fcab JH |
4048 | RTX_FRAME_RELATED_P (insn) = 1; |
4049 | } | |
4050 | } | |
4051 | ||
c6036a37 JH |
4052 | /* Emit code to save registers using MOV insns. First register |
4053 | is restored from POINTER + OFFSET. */ | |
4054 | static void | |
4055 | ix86_emit_save_regs_using_mov (pointer, offset) | |
b72f00af RK |
4056 | rtx pointer; |
4057 | HOST_WIDE_INT offset; | |
c6036a37 JH |
4058 | { |
4059 | int regno; | |
4060 | rtx insn; | |
4061 | ||
4062 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) | |
4063 | if (ix86_save_reg (regno, true)) | |
4064 | { | |
b72f00af RK |
4065 | insn = emit_move_insn (adjust_address (gen_rtx_MEM (Pmode, pointer), |
4066 | Pmode, offset), | |
c6036a37 JH |
4067 | gen_rtx_REG (Pmode, regno)); |
4068 | RTX_FRAME_RELATED_P (insn) = 1; | |
4069 | offset += UNITS_PER_WORD; | |
4070 | } | |
4071 | } | |
4072 | ||
0f290768 | 4073 | /* Expand the prologue into a bunch of separate insns. */ |
e075ae69 RH |
4074 | |
4075 | void | |
4076 | ix86_expand_prologue () | |
2a2ab3f9 | 4077 | { |
564d80f4 | 4078 | rtx insn; |
0d7d98ee JH |
4079 | int pic_reg_used = (flag_pic && (current_function_uses_pic_offset_table |
4080 | || current_function_uses_const_pool) | |
4081 | && !TARGET_64BIT); | |
4dd2ac2c | 4082 | struct ix86_frame frame; |
6ab16dd9 | 4083 | int use_mov = 0; |
c6036a37 | 4084 | HOST_WIDE_INT allocate; |
4dd2ac2c | 4085 | |
2ab0437e | 4086 | if (!optimize_size) |
6ab16dd9 JH |
4087 | { |
4088 | use_fast_prologue_epilogue | |
4089 | = !expensive_function_p (FAST_PROLOGUE_INSN_COUNT); | |
2ab0437e JH |
4090 | if (TARGET_PROLOGUE_USING_MOVE) |
4091 | use_mov = use_fast_prologue_epilogue; | |
6ab16dd9 | 4092 | } |
4dd2ac2c | 4093 | ix86_compute_frame_layout (&frame); |
79325812 | 4094 | |
e075ae69 RH |
4095 | /* Note: AT&T enter does NOT have reversed args. Enter is probably |
4096 | slower on all targets. Also sdb doesn't like it. */ | |
e9a25f70 | 4097 | |
2a2ab3f9 JVA |
4098 | if (frame_pointer_needed) |
4099 | { | |
564d80f4 | 4100 | insn = emit_insn (gen_push (hard_frame_pointer_rtx)); |
e075ae69 | 4101 | RTX_FRAME_RELATED_P (insn) = 1; |
e9a25f70 | 4102 | |
564d80f4 | 4103 | insn = emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx); |
e075ae69 | 4104 | RTX_FRAME_RELATED_P (insn) = 1; |
2a2ab3f9 JVA |
4105 | } |
4106 | ||
c6036a37 JH |
4107 | allocate = frame.to_allocate; |
4108 | /* In case we are dealing only with single register and empty frame, | |
4109 | push is equivalent of the mov+add sequence. */ | |
4110 | if (allocate == 0 && frame.nregs <= 1) | |
4111 | use_mov = 0; | |
4112 | ||
4113 | if (!use_mov) | |
4114 | ix86_emit_save_regs (); | |
4115 | else | |
4116 | allocate += frame.nregs * UNITS_PER_WORD; | |
564d80f4 | 4117 | |
c6036a37 | 4118 | if (allocate == 0) |
8dfe5673 | 4119 | ; |
e323735c | 4120 | else if (! TARGET_STACK_PROBE || allocate < CHECK_STACK_LIMIT) |
469ac993 | 4121 | { |
f2042df3 RH |
4122 | insn = emit_insn (gen_pro_epilogue_adjust_stack |
4123 | (stack_pointer_rtx, stack_pointer_rtx, | |
e323735c | 4124 | GEN_INT (-allocate))); |
e075ae69 | 4125 | RTX_FRAME_RELATED_P (insn) = 1; |
469ac993 | 4126 | } |
79325812 | 4127 | else |
8dfe5673 | 4128 | { |
e075ae69 | 4129 | /* ??? Is this only valid for Win32? */ |
e9a25f70 | 4130 | |
e075ae69 | 4131 | rtx arg0, sym; |
e9a25f70 | 4132 | |
8362f420 JH |
4133 | if (TARGET_64BIT) |
4134 | abort(); | |
4135 | ||
e075ae69 | 4136 | arg0 = gen_rtx_REG (SImode, 0); |
c6036a37 | 4137 | emit_move_insn (arg0, GEN_INT (allocate)); |
77a989d1 | 4138 | |
e075ae69 RH |
4139 | sym = gen_rtx_MEM (FUNCTION_MODE, |
4140 | gen_rtx_SYMBOL_REF (Pmode, "_alloca")); | |
32ee7d1d | 4141 | insn = emit_call_insn (gen_call (sym, const0_rtx, constm1_rtx)); |
e075ae69 RH |
4142 | |
4143 | CALL_INSN_FUNCTION_USAGE (insn) | |
276ab4a4 RH |
4144 | = gen_rtx_EXPR_LIST (VOIDmode, gen_rtx_USE (VOIDmode, arg0), |
4145 | CALL_INSN_FUNCTION_USAGE (insn)); | |
e075ae69 | 4146 | } |
c6036a37 JH |
4147 | if (use_mov) |
4148 | { | |
4149 | if (!frame_pointer_needed || !frame.to_allocate) | |
4150 | ix86_emit_save_regs_using_mov (stack_pointer_rtx, frame.to_allocate); | |
4151 | else | |
4152 | ix86_emit_save_regs_using_mov (hard_frame_pointer_rtx, | |
4153 | -frame.nregs * UNITS_PER_WORD); | |
4154 | } | |
e9a25f70 | 4155 | |
84530511 SC |
4156 | #ifdef SUBTARGET_PROLOGUE |
4157 | SUBTARGET_PROLOGUE; | |
0f290768 | 4158 | #endif |
84530511 | 4159 | |
e9a25f70 | 4160 | if (pic_reg_used) |
e075ae69 | 4161 | load_pic_register (); |
77a989d1 | 4162 | |
e9a25f70 JL |
4163 | /* If we are profiling, make sure no instructions are scheduled before |
4164 | the call to mcount. However, if -fpic, the above call will have | |
4165 | done that. */ | |
70f4f91c | 4166 | if (current_function_profile && ! pic_reg_used) |
e9a25f70 | 4167 | emit_insn (gen_blockage ()); |
77a989d1 SC |
4168 | } |
4169 | ||
da2d1d3a JH |
4170 | /* Emit code to restore saved registers using MOV insns. First register |
4171 | is restored from POINTER + OFFSET. */ | |
4172 | static void | |
1020a5ab RH |
4173 | ix86_emit_restore_regs_using_mov (pointer, offset, maybe_eh_return) |
4174 | rtx pointer; | |
4175 | int offset; | |
37a58036 | 4176 | int maybe_eh_return; |
da2d1d3a JH |
4177 | { |
4178 | int regno; | |
da2d1d3a | 4179 | |
4dd2ac2c | 4180 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) |
1020a5ab | 4181 | if (ix86_save_reg (regno, maybe_eh_return)) |
da2d1d3a | 4182 | { |
4dd2ac2c | 4183 | emit_move_insn (gen_rtx_REG (Pmode, regno), |
b72f00af RK |
4184 | adjust_address (gen_rtx_MEM (Pmode, pointer), |
4185 | Pmode, offset)); | |
4dd2ac2c | 4186 | offset += UNITS_PER_WORD; |
da2d1d3a JH |
4187 | } |
4188 | } | |
4189 | ||
0f290768 | 4190 | /* Restore function stack, frame, and registers. */ |
e9a25f70 | 4191 | |
2a2ab3f9 | 4192 | void |
1020a5ab RH |
4193 | ix86_expand_epilogue (style) |
4194 | int style; | |
2a2ab3f9 | 4195 | { |
1c71e60e | 4196 | int regno; |
fdb8a883 | 4197 | int sp_valid = !frame_pointer_needed || current_function_sp_is_unchanging; |
4dd2ac2c | 4198 | struct ix86_frame frame; |
65954bd8 | 4199 | HOST_WIDE_INT offset; |
4dd2ac2c JH |
4200 | |
4201 | ix86_compute_frame_layout (&frame); | |
2a2ab3f9 | 4202 | |
a4f31c00 | 4203 | /* Calculate start of saved registers relative to ebp. Special care |
84e306b4 RH |
4204 | must be taken for the normal return case of a function using |
4205 | eh_return: the eax and edx registers are marked as saved, but not | |
4206 | restored along this path. */ | |
4207 | offset = frame.nregs; | |
4208 | if (current_function_calls_eh_return && style != 2) | |
4209 | offset -= 2; | |
4210 | offset *= -UNITS_PER_WORD; | |
2a2ab3f9 | 4211 | |
fdb8a883 JW |
4212 | /* If we're only restoring one register and sp is not valid then |
4213 | using a move instruction to restore the register since it's | |
0f290768 | 4214 | less work than reloading sp and popping the register. |
da2d1d3a JH |
4215 | |
4216 | The default code result in stack adjustment using add/lea instruction, | |
4217 | while this code results in LEAVE instruction (or discrete equivalent), | |
4218 | so it is profitable in some other cases as well. Especially when there | |
4219 | are no registers to restore. We also use this code when TARGET_USE_LEAVE | |
4220 | and there is exactly one register to pop. This heruistic may need some | |
4221 | tuning in future. */ | |
4dd2ac2c | 4222 | if ((!sp_valid && frame.nregs <= 1) |
2ab0437e | 4223 | || (TARGET_EPILOGUE_USING_MOVE |
6ab16dd9 | 4224 | && use_fast_prologue_epilogue |
c6036a37 | 4225 | && (frame.nregs > 1 || frame.to_allocate)) |
4dd2ac2c | 4226 | || (frame_pointer_needed && !frame.nregs && frame.to_allocate) |
2ab0437e | 4227 | || (frame_pointer_needed && TARGET_USE_LEAVE |
6ab16dd9 | 4228 | && use_fast_prologue_epilogue && frame.nregs == 1) |
2ab0437e | 4229 | || current_function_calls_eh_return) |
2a2ab3f9 | 4230 | { |
da2d1d3a JH |
4231 | /* Restore registers. We can use ebp or esp to address the memory |
4232 | locations. If both are available, default to ebp, since offsets | |
4233 | are known to be small. Only exception is esp pointing directly to the | |
4234 | end of block of saved registers, where we may simplify addressing | |
4235 | mode. */ | |
4236 | ||
4dd2ac2c | 4237 | if (!frame_pointer_needed || (sp_valid && !frame.to_allocate)) |
1020a5ab RH |
4238 | ix86_emit_restore_regs_using_mov (stack_pointer_rtx, |
4239 | frame.to_allocate, style == 2); | |
da2d1d3a | 4240 | else |
1020a5ab RH |
4241 | ix86_emit_restore_regs_using_mov (hard_frame_pointer_rtx, |
4242 | offset, style == 2); | |
4243 | ||
4244 | /* eh_return epilogues need %ecx added to the stack pointer. */ | |
4245 | if (style == 2) | |
4246 | { | |
4247 | rtx tmp, sa = EH_RETURN_STACKADJ_RTX; | |
2a2ab3f9 | 4248 | |
1020a5ab RH |
4249 | if (frame_pointer_needed) |
4250 | { | |
4251 | tmp = gen_rtx_PLUS (Pmode, hard_frame_pointer_rtx, sa); | |
4252 | tmp = plus_constant (tmp, UNITS_PER_WORD); | |
4253 | emit_insn (gen_rtx_SET (VOIDmode, sa, tmp)); | |
4254 | ||
4255 | tmp = gen_rtx_MEM (Pmode, hard_frame_pointer_rtx); | |
4256 | emit_move_insn (hard_frame_pointer_rtx, tmp); | |
4257 | ||
4258 | emit_insn (gen_pro_epilogue_adjust_stack | |
f2042df3 | 4259 | (stack_pointer_rtx, sa, const0_rtx)); |
1020a5ab RH |
4260 | } |
4261 | else | |
4262 | { | |
4263 | tmp = gen_rtx_PLUS (Pmode, stack_pointer_rtx, sa); | |
4264 | tmp = plus_constant (tmp, (frame.to_allocate | |
4265 | + frame.nregs * UNITS_PER_WORD)); | |
4266 | emit_insn (gen_rtx_SET (VOIDmode, stack_pointer_rtx, tmp)); | |
4267 | } | |
4268 | } | |
4269 | else if (!frame_pointer_needed) | |
f2042df3 RH |
4270 | emit_insn (gen_pro_epilogue_adjust_stack |
4271 | (stack_pointer_rtx, stack_pointer_rtx, | |
4272 | GEN_INT (frame.to_allocate | |
4273 | + frame.nregs * UNITS_PER_WORD))); | |
0f290768 | 4274 | /* If not an i386, mov & pop is faster than "leave". */ |
6ab16dd9 | 4275 | else if (TARGET_USE_LEAVE || optimize_size || !use_fast_prologue_epilogue) |
8362f420 | 4276 | emit_insn (TARGET_64BIT ? gen_leave_rex64 () : gen_leave ()); |
c8c5cb99 | 4277 | else |
2a2ab3f9 | 4278 | { |
1c71e60e JH |
4279 | emit_insn (gen_pro_epilogue_adjust_stack (stack_pointer_rtx, |
4280 | hard_frame_pointer_rtx, | |
f2042df3 | 4281 | const0_rtx)); |
8362f420 JH |
4282 | if (TARGET_64BIT) |
4283 | emit_insn (gen_popdi1 (hard_frame_pointer_rtx)); | |
4284 | else | |
4285 | emit_insn (gen_popsi1 (hard_frame_pointer_rtx)); | |
e9a25f70 JL |
4286 | } |
4287 | } | |
1c71e60e | 4288 | else |
68f654ec | 4289 | { |
1c71e60e JH |
4290 | /* First step is to deallocate the stack frame so that we can |
4291 | pop the registers. */ | |
4292 | if (!sp_valid) | |
4293 | { | |
4294 | if (!frame_pointer_needed) | |
4295 | abort (); | |
4296 | emit_insn (gen_pro_epilogue_adjust_stack (stack_pointer_rtx, | |
4297 | hard_frame_pointer_rtx, | |
f2042df3 | 4298 | GEN_INT (offset))); |
1c71e60e | 4299 | } |
4dd2ac2c | 4300 | else if (frame.to_allocate) |
f2042df3 RH |
4301 | emit_insn (gen_pro_epilogue_adjust_stack |
4302 | (stack_pointer_rtx, stack_pointer_rtx, | |
4303 | GEN_INT (frame.to_allocate))); | |
1c71e60e | 4304 | |
4dd2ac2c | 4305 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) |
1020a5ab | 4306 | if (ix86_save_reg (regno, false)) |
8362f420 JH |
4307 | { |
4308 | if (TARGET_64BIT) | |
4309 | emit_insn (gen_popdi1 (gen_rtx_REG (Pmode, regno))); | |
4310 | else | |
4311 | emit_insn (gen_popsi1 (gen_rtx_REG (Pmode, regno))); | |
4312 | } | |
4dd2ac2c | 4313 | if (frame_pointer_needed) |
8362f420 | 4314 | { |
f5143c46 | 4315 | /* Leave results in shorter dependency chains on CPUs that are |
2ab0437e JH |
4316 | able to grok it fast. */ |
4317 | if (TARGET_USE_LEAVE) | |
4318 | emit_insn (TARGET_64BIT ? gen_leave_rex64 () : gen_leave ()); | |
4319 | else if (TARGET_64BIT) | |
8362f420 JH |
4320 | emit_insn (gen_popdi1 (hard_frame_pointer_rtx)); |
4321 | else | |
4322 | emit_insn (gen_popsi1 (hard_frame_pointer_rtx)); | |
4323 | } | |
68f654ec | 4324 | } |
68f654ec | 4325 | |
cbbf65e0 | 4326 | /* Sibcall epilogues don't want a return instruction. */ |
1020a5ab | 4327 | if (style == 0) |
cbbf65e0 RH |
4328 | return; |
4329 | ||
2a2ab3f9 JVA |
4330 | if (current_function_pops_args && current_function_args_size) |
4331 | { | |
e075ae69 | 4332 | rtx popc = GEN_INT (current_function_pops_args); |
2a2ab3f9 | 4333 | |
b8c752c8 UD |
4334 | /* i386 can only pop 64K bytes. If asked to pop more, pop |
4335 | return address, do explicit add, and jump indirectly to the | |
0f290768 | 4336 | caller. */ |
2a2ab3f9 | 4337 | |
b8c752c8 | 4338 | if (current_function_pops_args >= 65536) |
2a2ab3f9 | 4339 | { |
e075ae69 | 4340 | rtx ecx = gen_rtx_REG (SImode, 2); |
e9a25f70 | 4341 | |
8362f420 JH |
4342 | /* There are is no "pascal" calling convention in 64bit ABI. */ |
4343 | if (TARGET_64BIT) | |
4344 | abort(); | |
4345 | ||
e075ae69 RH |
4346 | emit_insn (gen_popsi1 (ecx)); |
4347 | emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, popc)); | |
11837777 | 4348 | emit_jump_insn (gen_return_indirect_internal (ecx)); |
e9a25f70 | 4349 | } |
79325812 | 4350 | else |
e075ae69 RH |
4351 | emit_jump_insn (gen_return_pop_internal (popc)); |
4352 | } | |
4353 | else | |
4354 | emit_jump_insn (gen_return_internal ()); | |
4355 | } | |
4356 | \f | |
4357 | /* Extract the parts of an RTL expression that is a valid memory address | |
b446e5a2 JH |
4358 | for an instruction. Return 0 if the structure of the address is |
4359 | grossly off. Return -1 if the address contains ASHIFT, so it is not | |
4360 | strictly valid, but still used for computing length of lea instruction. | |
4361 | */ | |
e075ae69 RH |
4362 | |
4363 | static int | |
4364 | ix86_decompose_address (addr, out) | |
4365 | register rtx addr; | |
4366 | struct ix86_address *out; | |
4367 | { | |
4368 | rtx base = NULL_RTX; | |
4369 | rtx index = NULL_RTX; | |
4370 | rtx disp = NULL_RTX; | |
4371 | HOST_WIDE_INT scale = 1; | |
4372 | rtx scale_rtx = NULL_RTX; | |
b446e5a2 | 4373 | int retval = 1; |
e075ae69 RH |
4374 | |
4375 | if (GET_CODE (addr) == REG || GET_CODE (addr) == SUBREG) | |
4376 | base = addr; | |
4377 | else if (GET_CODE (addr) == PLUS) | |
4378 | { | |
4379 | rtx op0 = XEXP (addr, 0); | |
4380 | rtx op1 = XEXP (addr, 1); | |
4381 | enum rtx_code code0 = GET_CODE (op0); | |
4382 | enum rtx_code code1 = GET_CODE (op1); | |
4383 | ||
4384 | if (code0 == REG || code0 == SUBREG) | |
4385 | { | |
4386 | if (code1 == REG || code1 == SUBREG) | |
4387 | index = op0, base = op1; /* index + base */ | |
4388 | else | |
4389 | base = op0, disp = op1; /* base + displacement */ | |
4390 | } | |
4391 | else if (code0 == MULT) | |
e9a25f70 | 4392 | { |
e075ae69 RH |
4393 | index = XEXP (op0, 0); |
4394 | scale_rtx = XEXP (op0, 1); | |
4395 | if (code1 == REG || code1 == SUBREG) | |
4396 | base = op1; /* index*scale + base */ | |
e9a25f70 | 4397 | else |
e075ae69 RH |
4398 | disp = op1; /* index*scale + disp */ |
4399 | } | |
4400 | else if (code0 == PLUS && GET_CODE (XEXP (op0, 0)) == MULT) | |
4401 | { | |
4402 | index = XEXP (XEXP (op0, 0), 0); /* index*scale + base + disp */ | |
4403 | scale_rtx = XEXP (XEXP (op0, 0), 1); | |
4404 | base = XEXP (op0, 1); | |
4405 | disp = op1; | |
2a2ab3f9 | 4406 | } |
e075ae69 RH |
4407 | else if (code0 == PLUS) |
4408 | { | |
4409 | index = XEXP (op0, 0); /* index + base + disp */ | |
4410 | base = XEXP (op0, 1); | |
4411 | disp = op1; | |
4412 | } | |
4413 | else | |
b446e5a2 | 4414 | return 0; |
e075ae69 RH |
4415 | } |
4416 | else if (GET_CODE (addr) == MULT) | |
4417 | { | |
4418 | index = XEXP (addr, 0); /* index*scale */ | |
4419 | scale_rtx = XEXP (addr, 1); | |
4420 | } | |
4421 | else if (GET_CODE (addr) == ASHIFT) | |
4422 | { | |
4423 | rtx tmp; | |
4424 | ||
4425 | /* We're called for lea too, which implements ashift on occasion. */ | |
4426 | index = XEXP (addr, 0); | |
4427 | tmp = XEXP (addr, 1); | |
4428 | if (GET_CODE (tmp) != CONST_INT) | |
b446e5a2 | 4429 | return 0; |
e075ae69 RH |
4430 | scale = INTVAL (tmp); |
4431 | if ((unsigned HOST_WIDE_INT) scale > 3) | |
b446e5a2 | 4432 | return 0; |
e075ae69 | 4433 | scale = 1 << scale; |
b446e5a2 | 4434 | retval = -1; |
2a2ab3f9 | 4435 | } |
2a2ab3f9 | 4436 | else |
e075ae69 RH |
4437 | disp = addr; /* displacement */ |
4438 | ||
4439 | /* Extract the integral value of scale. */ | |
4440 | if (scale_rtx) | |
e9a25f70 | 4441 | { |
e075ae69 | 4442 | if (GET_CODE (scale_rtx) != CONST_INT) |
b446e5a2 | 4443 | return 0; |
e075ae69 | 4444 | scale = INTVAL (scale_rtx); |
e9a25f70 | 4445 | } |
3b3c6a3f | 4446 | |
e075ae69 RH |
4447 | /* Allow arg pointer and stack pointer as index if there is not scaling */ |
4448 | if (base && index && scale == 1 | |
564d80f4 JH |
4449 | && (index == arg_pointer_rtx || index == frame_pointer_rtx |
4450 | || index == stack_pointer_rtx)) | |
e075ae69 RH |
4451 | { |
4452 | rtx tmp = base; | |
4453 | base = index; | |
4454 | index = tmp; | |
4455 | } | |
4456 | ||
4457 | /* Special case: %ebp cannot be encoded as a base without a displacement. */ | |
564d80f4 JH |
4458 | if ((base == hard_frame_pointer_rtx |
4459 | || base == frame_pointer_rtx | |
4460 | || base == arg_pointer_rtx) && !disp) | |
e075ae69 RH |
4461 | disp = const0_rtx; |
4462 | ||
4463 | /* Special case: on K6, [%esi] makes the instruction vector decoded. | |
4464 | Avoid this by transforming to [%esi+0]. */ | |
4465 | if (ix86_cpu == PROCESSOR_K6 && !optimize_size | |
4466 | && base && !index && !disp | |
329e1d01 | 4467 | && REG_P (base) |
e075ae69 RH |
4468 | && REGNO_REG_CLASS (REGNO (base)) == SIREG) |
4469 | disp = const0_rtx; | |
4470 | ||
4471 | /* Special case: encode reg+reg instead of reg*2. */ | |
4472 | if (!base && index && scale && scale == 2) | |
4473 | base = index, scale = 1; | |
0f290768 | 4474 | |
e075ae69 RH |
4475 | /* Special case: scaling cannot be encoded without base or displacement. */ |
4476 | if (!base && !disp && index && scale != 1) | |
4477 | disp = const0_rtx; | |
4478 | ||
4479 | out->base = base; | |
4480 | out->index = index; | |
4481 | out->disp = disp; | |
4482 | out->scale = scale; | |
3b3c6a3f | 4483 | |
b446e5a2 | 4484 | return retval; |
e075ae69 | 4485 | } |
01329426 JH |
4486 | \f |
4487 | /* Return cost of the memory address x. | |
4488 | For i386, it is better to use a complex address than let gcc copy | |
4489 | the address into a reg and make a new pseudo. But not if the address | |
4490 | requires to two regs - that would mean more pseudos with longer | |
4491 | lifetimes. */ | |
4492 | int | |
4493 | ix86_address_cost (x) | |
4494 | rtx x; | |
4495 | { | |
4496 | struct ix86_address parts; | |
4497 | int cost = 1; | |
3b3c6a3f | 4498 | |
01329426 JH |
4499 | if (!ix86_decompose_address (x, &parts)) |
4500 | abort (); | |
4501 | ||
4502 | /* More complex memory references are better. */ | |
4503 | if (parts.disp && parts.disp != const0_rtx) | |
4504 | cost--; | |
4505 | ||
4506 | /* Attempt to minimize number of registers in the address. */ | |
4507 | if ((parts.base | |
4508 | && (!REG_P (parts.base) || REGNO (parts.base) >= FIRST_PSEUDO_REGISTER)) | |
4509 | || (parts.index | |
4510 | && (!REG_P (parts.index) | |
4511 | || REGNO (parts.index) >= FIRST_PSEUDO_REGISTER))) | |
4512 | cost++; | |
4513 | ||
4514 | if (parts.base | |
4515 | && (!REG_P (parts.base) || REGNO (parts.base) >= FIRST_PSEUDO_REGISTER) | |
4516 | && parts.index | |
4517 | && (!REG_P (parts.index) || REGNO (parts.index) >= FIRST_PSEUDO_REGISTER) | |
4518 | && parts.base != parts.index) | |
4519 | cost++; | |
4520 | ||
4521 | /* AMD-K6 don't like addresses with ModR/M set to 00_xxx_100b, | |
4522 | since it's predecode logic can't detect the length of instructions | |
4523 | and it degenerates to vector decoded. Increase cost of such | |
4524 | addresses here. The penalty is minimally 2 cycles. It may be worthwhile | |
0f290768 | 4525 | to split such addresses or even refuse such addresses at all. |
01329426 JH |
4526 | |
4527 | Following addressing modes are affected: | |
4528 | [base+scale*index] | |
4529 | [scale*index+disp] | |
4530 | [base+index] | |
0f290768 | 4531 | |
01329426 JH |
4532 | The first and last case may be avoidable by explicitly coding the zero in |
4533 | memory address, but I don't have AMD-K6 machine handy to check this | |
4534 | theory. */ | |
4535 | ||
4536 | if (TARGET_K6 | |
4537 | && ((!parts.disp && parts.base && parts.index && parts.scale != 1) | |
4538 | || (parts.disp && !parts.base && parts.index && parts.scale != 1) | |
4539 | || (!parts.disp && parts.base && parts.index && parts.scale == 1))) | |
4540 | cost += 10; | |
0f290768 | 4541 | |
01329426 JH |
4542 | return cost; |
4543 | } | |
4544 | \f | |
b949ea8b JW |
4545 | /* If X is a machine specific address (i.e. a symbol or label being |
4546 | referenced as a displacement from the GOT implemented using an | |
4547 | UNSPEC), then return the base term. Otherwise return X. */ | |
4548 | ||
4549 | rtx | |
4550 | ix86_find_base_term (x) | |
4551 | rtx x; | |
4552 | { | |
4553 | rtx term; | |
4554 | ||
6eb791fc JH |
4555 | if (TARGET_64BIT) |
4556 | { | |
4557 | if (GET_CODE (x) != CONST) | |
4558 | return x; | |
4559 | term = XEXP (x, 0); | |
4560 | if (GET_CODE (term) == PLUS | |
4561 | && (GET_CODE (XEXP (term, 1)) == CONST_INT | |
4562 | || GET_CODE (XEXP (term, 1)) == CONST_DOUBLE)) | |
4563 | term = XEXP (term, 0); | |
4564 | if (GET_CODE (term) != UNSPEC | |
4565 | || XVECLEN (term, 0) != 1 | |
4566 | || XINT (term, 1) != 15) | |
4567 | return x; | |
4568 | ||
4569 | term = XVECEXP (term, 0, 0); | |
4570 | ||
4571 | if (GET_CODE (term) != SYMBOL_REF | |
4572 | && GET_CODE (term) != LABEL_REF) | |
4573 | return x; | |
4574 | ||
4575 | return term; | |
4576 | } | |
4577 | ||
b949ea8b JW |
4578 | if (GET_CODE (x) != PLUS |
4579 | || XEXP (x, 0) != pic_offset_table_rtx | |
4580 | || GET_CODE (XEXP (x, 1)) != CONST) | |
4581 | return x; | |
4582 | ||
4583 | term = XEXP (XEXP (x, 1), 0); | |
4584 | ||
4585 | if (GET_CODE (term) == PLUS && GET_CODE (XEXP (term, 1)) == CONST_INT) | |
4586 | term = XEXP (term, 0); | |
4587 | ||
4588 | if (GET_CODE (term) != UNSPEC | |
4589 | || XVECLEN (term, 0) != 1 | |
4590 | || XINT (term, 1) != 7) | |
4591 | return x; | |
4592 | ||
4593 | term = XVECEXP (term, 0, 0); | |
4594 | ||
4595 | if (GET_CODE (term) != SYMBOL_REF | |
4596 | && GET_CODE (term) != LABEL_REF) | |
4597 | return x; | |
4598 | ||
4599 | return term; | |
4600 | } | |
4601 | \f | |
e075ae69 RH |
4602 | /* Determine if a given CONST RTX is a valid memory displacement |
4603 | in PIC mode. */ | |
0f290768 | 4604 | |
59be65f6 | 4605 | int |
91bb873f RH |
4606 | legitimate_pic_address_disp_p (disp) |
4607 | register rtx disp; | |
4608 | { | |
6eb791fc JH |
4609 | /* In 64bit mode we can allow direct addresses of symbols and labels |
4610 | when they are not dynamic symbols. */ | |
4611 | if (TARGET_64BIT) | |
4612 | { | |
4613 | rtx x = disp; | |
4614 | if (GET_CODE (disp) == CONST) | |
4615 | x = XEXP (disp, 0); | |
4616 | /* ??? Handle PIC code models */ | |
4617 | if (GET_CODE (x) == PLUS | |
4618 | && (GET_CODE (XEXP (x, 1)) == CONST_INT | |
4619 | && ix86_cmodel == CM_SMALL_PIC | |
4620 | && INTVAL (XEXP (x, 1)) < 1024*1024*1024 | |
4621 | && INTVAL (XEXP (x, 1)) > -1024*1024*1024)) | |
4622 | x = XEXP (x, 0); | |
4623 | if (local_symbolic_operand (x, Pmode)) | |
4624 | return 1; | |
4625 | } | |
91bb873f RH |
4626 | if (GET_CODE (disp) != CONST) |
4627 | return 0; | |
4628 | disp = XEXP (disp, 0); | |
4629 | ||
6eb791fc JH |
4630 | if (TARGET_64BIT) |
4631 | { | |
4632 | /* We are unsafe to allow PLUS expressions. This limit allowed distance | |
4633 | of GOT tables. We should not need these anyway. */ | |
4634 | if (GET_CODE (disp) != UNSPEC | |
4635 | || XVECLEN (disp, 0) != 1 | |
4636 | || XINT (disp, 1) != 15) | |
4637 | return 0; | |
4638 | ||
4639 | if (GET_CODE (XVECEXP (disp, 0, 0)) != SYMBOL_REF | |
4640 | && GET_CODE (XVECEXP (disp, 0, 0)) != LABEL_REF) | |
4641 | return 0; | |
4642 | return 1; | |
4643 | } | |
4644 | ||
91bb873f RH |
4645 | if (GET_CODE (disp) == PLUS) |
4646 | { | |
4647 | if (GET_CODE (XEXP (disp, 1)) != CONST_INT) | |
4648 | return 0; | |
4649 | disp = XEXP (disp, 0); | |
4650 | } | |
4651 | ||
4652 | if (GET_CODE (disp) != UNSPEC | |
4653 | || XVECLEN (disp, 0) != 1) | |
4654 | return 0; | |
4655 | ||
4656 | /* Must be @GOT or @GOTOFF. */ | |
623fe810 RH |
4657 | switch (XINT (disp, 1)) |
4658 | { | |
4659 | case 6: /* @GOT */ | |
4660 | return GET_CODE (XVECEXP (disp, 0, 0)) == SYMBOL_REF; | |
91bb873f | 4661 | |
623fe810 RH |
4662 | case 7: /* @GOTOFF */ |
4663 | return local_symbolic_operand (XVECEXP (disp, 0, 0), Pmode); | |
4664 | } | |
4665 | ||
4666 | return 0; | |
91bb873f RH |
4667 | } |
4668 | ||
e075ae69 RH |
4669 | /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression that is a valid |
4670 | memory address for an instruction. The MODE argument is the machine mode | |
4671 | for the MEM expression that wants to use this address. | |
4672 | ||
4673 | It only recognizes address in canonical form. LEGITIMIZE_ADDRESS should | |
4674 | convert common non-canonical forms to canonical form so that they will | |
4675 | be recognized. */ | |
4676 | ||
3b3c6a3f MM |
4677 | int |
4678 | legitimate_address_p (mode, addr, strict) | |
4679 | enum machine_mode mode; | |
4680 | register rtx addr; | |
4681 | int strict; | |
4682 | { | |
e075ae69 RH |
4683 | struct ix86_address parts; |
4684 | rtx base, index, disp; | |
4685 | HOST_WIDE_INT scale; | |
4686 | const char *reason = NULL; | |
4687 | rtx reason_rtx = NULL_RTX; | |
3b3c6a3f MM |
4688 | |
4689 | if (TARGET_DEBUG_ADDR) | |
4690 | { | |
4691 | fprintf (stderr, | |
e9a25f70 | 4692 | "\n======\nGO_IF_LEGITIMATE_ADDRESS, mode = %s, strict = %d\n", |
3b3c6a3f | 4693 | GET_MODE_NAME (mode), strict); |
3b3c6a3f MM |
4694 | debug_rtx (addr); |
4695 | } | |
4696 | ||
b446e5a2 | 4697 | if (ix86_decompose_address (addr, &parts) <= 0) |
3b3c6a3f | 4698 | { |
e075ae69 | 4699 | reason = "decomposition failed"; |
50e60bc3 | 4700 | goto report_error; |
3b3c6a3f MM |
4701 | } |
4702 | ||
e075ae69 RH |
4703 | base = parts.base; |
4704 | index = parts.index; | |
4705 | disp = parts.disp; | |
4706 | scale = parts.scale; | |
91f0226f | 4707 | |
e075ae69 | 4708 | /* Validate base register. |
e9a25f70 JL |
4709 | |
4710 | Don't allow SUBREG's here, it can lead to spill failures when the base | |
3d771dfd MM |
4711 | is one word out of a two word structure, which is represented internally |
4712 | as a DImode int. */ | |
e9a25f70 | 4713 | |
3b3c6a3f MM |
4714 | if (base) |
4715 | { | |
e075ae69 RH |
4716 | reason_rtx = base; |
4717 | ||
3d771dfd | 4718 | if (GET_CODE (base) != REG) |
3b3c6a3f | 4719 | { |
e075ae69 | 4720 | reason = "base is not a register"; |
50e60bc3 | 4721 | goto report_error; |
3b3c6a3f MM |
4722 | } |
4723 | ||
c954bd01 RH |
4724 | if (GET_MODE (base) != Pmode) |
4725 | { | |
e075ae69 | 4726 | reason = "base is not in Pmode"; |
50e60bc3 | 4727 | goto report_error; |
c954bd01 RH |
4728 | } |
4729 | ||
e9a25f70 JL |
4730 | if ((strict && ! REG_OK_FOR_BASE_STRICT_P (base)) |
4731 | || (! strict && ! REG_OK_FOR_BASE_NONSTRICT_P (base))) | |
3b3c6a3f | 4732 | { |
e075ae69 | 4733 | reason = "base is not valid"; |
50e60bc3 | 4734 | goto report_error; |
3b3c6a3f MM |
4735 | } |
4736 | } | |
4737 | ||
e075ae69 | 4738 | /* Validate index register. |
e9a25f70 JL |
4739 | |
4740 | Don't allow SUBREG's here, it can lead to spill failures when the index | |
3d771dfd MM |
4741 | is one word out of a two word structure, which is represented internally |
4742 | as a DImode int. */ | |
e075ae69 RH |
4743 | |
4744 | if (index) | |
3b3c6a3f | 4745 | { |
e075ae69 RH |
4746 | reason_rtx = index; |
4747 | ||
4748 | if (GET_CODE (index) != REG) | |
3b3c6a3f | 4749 | { |
e075ae69 | 4750 | reason = "index is not a register"; |
50e60bc3 | 4751 | goto report_error; |
3b3c6a3f MM |
4752 | } |
4753 | ||
e075ae69 | 4754 | if (GET_MODE (index) != Pmode) |
c954bd01 | 4755 | { |
e075ae69 | 4756 | reason = "index is not in Pmode"; |
50e60bc3 | 4757 | goto report_error; |
c954bd01 RH |
4758 | } |
4759 | ||
e075ae69 RH |
4760 | if ((strict && ! REG_OK_FOR_INDEX_STRICT_P (index)) |
4761 | || (! strict && ! REG_OK_FOR_INDEX_NONSTRICT_P (index))) | |
3b3c6a3f | 4762 | { |
e075ae69 | 4763 | reason = "index is not valid"; |
50e60bc3 | 4764 | goto report_error; |
3b3c6a3f MM |
4765 | } |
4766 | } | |
3b3c6a3f | 4767 | |
e075ae69 RH |
4768 | /* Validate scale factor. */ |
4769 | if (scale != 1) | |
3b3c6a3f | 4770 | { |
e075ae69 RH |
4771 | reason_rtx = GEN_INT (scale); |
4772 | if (!index) | |
3b3c6a3f | 4773 | { |
e075ae69 | 4774 | reason = "scale without index"; |
50e60bc3 | 4775 | goto report_error; |
3b3c6a3f MM |
4776 | } |
4777 | ||
e075ae69 | 4778 | if (scale != 2 && scale != 4 && scale != 8) |
3b3c6a3f | 4779 | { |
e075ae69 | 4780 | reason = "scale is not a valid multiplier"; |
50e60bc3 | 4781 | goto report_error; |
3b3c6a3f MM |
4782 | } |
4783 | } | |
4784 | ||
91bb873f | 4785 | /* Validate displacement. */ |
3b3c6a3f MM |
4786 | if (disp) |
4787 | { | |
e075ae69 RH |
4788 | reason_rtx = disp; |
4789 | ||
91bb873f | 4790 | if (!CONSTANT_ADDRESS_P (disp)) |
3b3c6a3f | 4791 | { |
e075ae69 | 4792 | reason = "displacement is not constant"; |
50e60bc3 | 4793 | goto report_error; |
3b3c6a3f MM |
4794 | } |
4795 | ||
0d7d98ee | 4796 | if (TARGET_64BIT) |
3b3c6a3f | 4797 | { |
0d7d98ee JH |
4798 | if (!x86_64_sign_extended_value (disp)) |
4799 | { | |
4800 | reason = "displacement is out of range"; | |
4801 | goto report_error; | |
4802 | } | |
4803 | } | |
4804 | else | |
4805 | { | |
4806 | if (GET_CODE (disp) == CONST_DOUBLE) | |
4807 | { | |
4808 | reason = "displacement is a const_double"; | |
4809 | goto report_error; | |
4810 | } | |
3b3c6a3f MM |
4811 | } |
4812 | ||
91bb873f | 4813 | if (flag_pic && SYMBOLIC_CONST (disp)) |
3b3c6a3f | 4814 | { |
0d7d98ee JH |
4815 | if (TARGET_64BIT && (index || base)) |
4816 | { | |
4817 | reason = "non-constant pic memory reference"; | |
4818 | goto report_error; | |
4819 | } | |
91bb873f RH |
4820 | if (! legitimate_pic_address_disp_p (disp)) |
4821 | { | |
e075ae69 | 4822 | reason = "displacement is an invalid pic construct"; |
50e60bc3 | 4823 | goto report_error; |
91bb873f RH |
4824 | } |
4825 | ||
4e9efe54 | 4826 | /* This code used to verify that a symbolic pic displacement |
0f290768 KH |
4827 | includes the pic_offset_table_rtx register. |
4828 | ||
4e9efe54 JH |
4829 | While this is good idea, unfortunately these constructs may |
4830 | be created by "adds using lea" optimization for incorrect | |
4831 | code like: | |
4832 | ||
4833 | int a; | |
4834 | int foo(int i) | |
4835 | { | |
4836 | return *(&a+i); | |
4837 | } | |
4838 | ||
50e60bc3 | 4839 | This code is nonsensical, but results in addressing |
4e9efe54 | 4840 | GOT table with pic_offset_table_rtx base. We can't |
f710504c | 4841 | just refuse it easily, since it gets matched by |
4e9efe54 JH |
4842 | "addsi3" pattern, that later gets split to lea in the |
4843 | case output register differs from input. While this | |
4844 | can be handled by separate addsi pattern for this case | |
4845 | that never results in lea, this seems to be easier and | |
4846 | correct fix for crash to disable this test. */ | |
3b3c6a3f | 4847 | } |
91bb873f | 4848 | else if (HALF_PIC_P ()) |
3b3c6a3f | 4849 | { |
91bb873f | 4850 | if (! HALF_PIC_ADDRESS_P (disp) |
e075ae69 | 4851 | || (base != NULL_RTX || index != NULL_RTX)) |
91bb873f | 4852 | { |
e075ae69 | 4853 | reason = "displacement is an invalid half-pic reference"; |
50e60bc3 | 4854 | goto report_error; |
91bb873f | 4855 | } |
3b3c6a3f MM |
4856 | } |
4857 | } | |
4858 | ||
e075ae69 | 4859 | /* Everything looks valid. */ |
3b3c6a3f | 4860 | if (TARGET_DEBUG_ADDR) |
e075ae69 | 4861 | fprintf (stderr, "Success.\n"); |
3b3c6a3f | 4862 | return TRUE; |
e075ae69 | 4863 | |
50e60bc3 | 4864 | report_error: |
e075ae69 RH |
4865 | if (TARGET_DEBUG_ADDR) |
4866 | { | |
4867 | fprintf (stderr, "Error: %s\n", reason); | |
4868 | debug_rtx (reason_rtx); | |
4869 | } | |
4870 | return FALSE; | |
3b3c6a3f | 4871 | } |
3b3c6a3f | 4872 | \f |
55efb413 JW |
4873 | /* Return an unique alias set for the GOT. */ |
4874 | ||
0f290768 | 4875 | static HOST_WIDE_INT |
55efb413 JW |
4876 | ix86_GOT_alias_set () |
4877 | { | |
4878 | static HOST_WIDE_INT set = -1; | |
4879 | if (set == -1) | |
4880 | set = new_alias_set (); | |
4881 | return set; | |
0f290768 | 4882 | } |
55efb413 | 4883 | |
3b3c6a3f MM |
4884 | /* Return a legitimate reference for ORIG (an address) using the |
4885 | register REG. If REG is 0, a new pseudo is generated. | |
4886 | ||
91bb873f | 4887 | There are two types of references that must be handled: |
3b3c6a3f MM |
4888 | |
4889 | 1. Global data references must load the address from the GOT, via | |
4890 | the PIC reg. An insn is emitted to do this load, and the reg is | |
4891 | returned. | |
4892 | ||
91bb873f RH |
4893 | 2. Static data references, constant pool addresses, and code labels |
4894 | compute the address as an offset from the GOT, whose base is in | |
4895 | the PIC reg. Static data objects have SYMBOL_REF_FLAG set to | |
4896 | differentiate them from global data objects. The returned | |
4897 | address is the PIC reg + an unspec constant. | |
3b3c6a3f MM |
4898 | |
4899 | GO_IF_LEGITIMATE_ADDRESS rejects symbolic references unless the PIC | |
91bb873f | 4900 | reg also appears in the address. */ |
3b3c6a3f MM |
4901 | |
4902 | rtx | |
4903 | legitimize_pic_address (orig, reg) | |
4904 | rtx orig; | |
4905 | rtx reg; | |
4906 | { | |
4907 | rtx addr = orig; | |
4908 | rtx new = orig; | |
91bb873f | 4909 | rtx base; |
3b3c6a3f | 4910 | |
623fe810 | 4911 | if (local_symbolic_operand (addr, Pmode)) |
3b3c6a3f | 4912 | { |
14f73b5a JH |
4913 | /* In 64bit mode we can address such objects directly. */ |
4914 | if (TARGET_64BIT) | |
4915 | new = addr; | |
4916 | else | |
4917 | { | |
4918 | /* This symbol may be referenced via a displacement from the PIC | |
4919 | base address (@GOTOFF). */ | |
3b3c6a3f | 4920 | |
14f73b5a JH |
4921 | current_function_uses_pic_offset_table = 1; |
4922 | new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 7); | |
4923 | new = gen_rtx_CONST (Pmode, new); | |
4924 | new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new); | |
3b3c6a3f | 4925 | |
14f73b5a JH |
4926 | if (reg != 0) |
4927 | { | |
4928 | emit_move_insn (reg, new); | |
4929 | new = reg; | |
4930 | } | |
4931 | } | |
3b3c6a3f | 4932 | } |
91bb873f | 4933 | else if (GET_CODE (addr) == SYMBOL_REF) |
3b3c6a3f | 4934 | { |
14f73b5a JH |
4935 | if (TARGET_64BIT) |
4936 | { | |
4937 | current_function_uses_pic_offset_table = 1; | |
4938 | new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 15); | |
4939 | new = gen_rtx_CONST (Pmode, new); | |
4940 | new = gen_rtx_MEM (Pmode, new); | |
4941 | RTX_UNCHANGING_P (new) = 1; | |
4942 | set_mem_alias_set (new, ix86_GOT_alias_set ()); | |
4943 | ||
4944 | if (reg == 0) | |
4945 | reg = gen_reg_rtx (Pmode); | |
4946 | /* Use directly gen_movsi, otherwise the address is loaded | |
4947 | into register for CSE. We don't want to CSE this addresses, | |
4948 | instead we CSE addresses from the GOT table, so skip this. */ | |
4949 | emit_insn (gen_movsi (reg, new)); | |
4950 | new = reg; | |
4951 | } | |
4952 | else | |
4953 | { | |
4954 | /* This symbol must be referenced via a load from the | |
4955 | Global Offset Table (@GOT). */ | |
3b3c6a3f | 4956 | |
14f73b5a JH |
4957 | current_function_uses_pic_offset_table = 1; |
4958 | new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, addr), 6); | |
4959 | new = gen_rtx_CONST (Pmode, new); | |
4960 | new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new); | |
4961 | new = gen_rtx_MEM (Pmode, new); | |
4962 | RTX_UNCHANGING_P (new) = 1; | |
4963 | set_mem_alias_set (new, ix86_GOT_alias_set ()); | |
3b3c6a3f | 4964 | |
14f73b5a JH |
4965 | if (reg == 0) |
4966 | reg = gen_reg_rtx (Pmode); | |
4967 | emit_move_insn (reg, new); | |
4968 | new = reg; | |
4969 | } | |
0f290768 | 4970 | } |
91bb873f RH |
4971 | else |
4972 | { | |
4973 | if (GET_CODE (addr) == CONST) | |
3b3c6a3f | 4974 | { |
91bb873f RH |
4975 | addr = XEXP (addr, 0); |
4976 | if (GET_CODE (addr) == UNSPEC) | |
4977 | { | |
4978 | /* Check that the unspec is one of the ones we generate? */ | |
4979 | } | |
4980 | else if (GET_CODE (addr) != PLUS) | |
564d80f4 | 4981 | abort (); |
3b3c6a3f | 4982 | } |
91bb873f RH |
4983 | if (GET_CODE (addr) == PLUS) |
4984 | { | |
4985 | rtx op0 = XEXP (addr, 0), op1 = XEXP (addr, 1); | |
e9a25f70 | 4986 | |
91bb873f RH |
4987 | /* Check first to see if this is a constant offset from a @GOTOFF |
4988 | symbol reference. */ | |
623fe810 | 4989 | if (local_symbolic_operand (op0, Pmode) |
91bb873f RH |
4990 | && GET_CODE (op1) == CONST_INT) |
4991 | { | |
6eb791fc JH |
4992 | if (!TARGET_64BIT) |
4993 | { | |
4994 | current_function_uses_pic_offset_table = 1; | |
4995 | new = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, op0), 7); | |
4996 | new = gen_rtx_PLUS (Pmode, new, op1); | |
4997 | new = gen_rtx_CONST (Pmode, new); | |
4998 | new = gen_rtx_PLUS (Pmode, pic_offset_table_rtx, new); | |
91bb873f | 4999 | |
6eb791fc JH |
5000 | if (reg != 0) |
5001 | { | |
5002 | emit_move_insn (reg, new); | |
5003 | new = reg; | |
5004 | } | |
5005 | } | |
5006 | else | |
91bb873f | 5007 | { |
6eb791fc | 5008 | /* ??? We need to limit offsets here. */ |
91bb873f RH |
5009 | } |
5010 | } | |
5011 | else | |
5012 | { | |
5013 | base = legitimize_pic_address (XEXP (addr, 0), reg); | |
5014 | new = legitimize_pic_address (XEXP (addr, 1), | |
5015 | base == reg ? NULL_RTX : reg); | |
5016 | ||
5017 | if (GET_CODE (new) == CONST_INT) | |
5018 | new = plus_constant (base, INTVAL (new)); | |
5019 | else | |
5020 | { | |
5021 | if (GET_CODE (new) == PLUS && CONSTANT_P (XEXP (new, 1))) | |
5022 | { | |
5023 | base = gen_rtx_PLUS (Pmode, base, XEXP (new, 0)); | |
5024 | new = XEXP (new, 1); | |
5025 | } | |
5026 | new = gen_rtx_PLUS (Pmode, base, new); | |
5027 | } | |
5028 | } | |
5029 | } | |
3b3c6a3f MM |
5030 | } |
5031 | return new; | |
5032 | } | |
5033 | \f | |
3b3c6a3f MM |
5034 | /* Try machine-dependent ways of modifying an illegitimate address |
5035 | to be legitimate. If we find one, return the new, valid address. | |
5036 | This macro is used in only one place: `memory_address' in explow.c. | |
5037 | ||
5038 | OLDX is the address as it was before break_out_memory_refs was called. | |
5039 | In some cases it is useful to look at this to decide what needs to be done. | |
5040 | ||
5041 | MODE and WIN are passed so that this macro can use | |
5042 | GO_IF_LEGITIMATE_ADDRESS. | |
5043 | ||
5044 | It is always safe for this macro to do nothing. It exists to recognize | |
5045 | opportunities to optimize the output. | |
5046 | ||
5047 | For the 80386, we handle X+REG by loading X into a register R and | |
5048 | using R+REG. R will go in a general reg and indexing will be used. | |
5049 | However, if REG is a broken-out memory address or multiplication, | |
5050 | nothing needs to be done because REG can certainly go in a general reg. | |
5051 | ||
5052 | When -fpic is used, special handling is needed for symbolic references. | |
5053 | See comments by legitimize_pic_address in i386.c for details. */ | |
5054 | ||
5055 | rtx | |
5056 | legitimize_address (x, oldx, mode) | |
5057 | register rtx x; | |
bb5177ac | 5058 | register rtx oldx ATTRIBUTE_UNUSED; |
3b3c6a3f MM |
5059 | enum machine_mode mode; |
5060 | { | |
5061 | int changed = 0; | |
5062 | unsigned log; | |
5063 | ||
5064 | if (TARGET_DEBUG_ADDR) | |
5065 | { | |
e9a25f70 JL |
5066 | fprintf (stderr, "\n==========\nLEGITIMIZE_ADDRESS, mode = %s\n", |
5067 | GET_MODE_NAME (mode)); | |
3b3c6a3f MM |
5068 | debug_rtx (x); |
5069 | } | |
5070 | ||
5071 | if (flag_pic && SYMBOLIC_CONST (x)) | |
5072 | return legitimize_pic_address (x, 0); | |
5073 | ||
5074 | /* Canonicalize shifts by 0, 1, 2, 3 into multiply */ | |
5075 | if (GET_CODE (x) == ASHIFT | |
5076 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
5077 | && (log = (unsigned)exact_log2 (INTVAL (XEXP (x, 1)))) < 4) | |
5078 | { | |
5079 | changed = 1; | |
a269a03c JC |
5080 | x = gen_rtx_MULT (Pmode, force_reg (Pmode, XEXP (x, 0)), |
5081 | GEN_INT (1 << log)); | |
3b3c6a3f MM |
5082 | } |
5083 | ||
5084 | if (GET_CODE (x) == PLUS) | |
5085 | { | |
0f290768 | 5086 | /* Canonicalize shifts by 0, 1, 2, 3 into multiply. */ |
e9a25f70 | 5087 | |
3b3c6a3f MM |
5088 | if (GET_CODE (XEXP (x, 0)) == ASHIFT |
5089 | && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT | |
5090 | && (log = (unsigned)exact_log2 (INTVAL (XEXP (XEXP (x, 0), 1)))) < 4) | |
5091 | { | |
5092 | changed = 1; | |
c5c76735 JL |
5093 | XEXP (x, 0) = gen_rtx_MULT (Pmode, |
5094 | force_reg (Pmode, XEXP (XEXP (x, 0), 0)), | |
5095 | GEN_INT (1 << log)); | |
3b3c6a3f MM |
5096 | } |
5097 | ||
5098 | if (GET_CODE (XEXP (x, 1)) == ASHIFT | |
5099 | && GET_CODE (XEXP (XEXP (x, 1), 1)) == CONST_INT | |
5100 | && (log = (unsigned)exact_log2 (INTVAL (XEXP (XEXP (x, 1), 1)))) < 4) | |
5101 | { | |
5102 | changed = 1; | |
c5c76735 JL |
5103 | XEXP (x, 1) = gen_rtx_MULT (Pmode, |
5104 | force_reg (Pmode, XEXP (XEXP (x, 1), 0)), | |
5105 | GEN_INT (1 << log)); | |
3b3c6a3f MM |
5106 | } |
5107 | ||
0f290768 | 5108 | /* Put multiply first if it isn't already. */ |
3b3c6a3f MM |
5109 | if (GET_CODE (XEXP (x, 1)) == MULT) |
5110 | { | |
5111 | rtx tmp = XEXP (x, 0); | |
5112 | XEXP (x, 0) = XEXP (x, 1); | |
5113 | XEXP (x, 1) = tmp; | |
5114 | changed = 1; | |
5115 | } | |
5116 | ||
5117 | /* Canonicalize (plus (mult (reg) (const)) (plus (reg) (const))) | |
5118 | into (plus (plus (mult (reg) (const)) (reg)) (const)). This can be | |
5119 | created by virtual register instantiation, register elimination, and | |
5120 | similar optimizations. */ | |
5121 | if (GET_CODE (XEXP (x, 0)) == MULT && GET_CODE (XEXP (x, 1)) == PLUS) | |
5122 | { | |
5123 | changed = 1; | |
c5c76735 JL |
5124 | x = gen_rtx_PLUS (Pmode, |
5125 | gen_rtx_PLUS (Pmode, XEXP (x, 0), | |
5126 | XEXP (XEXP (x, 1), 0)), | |
5127 | XEXP (XEXP (x, 1), 1)); | |
3b3c6a3f MM |
5128 | } |
5129 | ||
e9a25f70 JL |
5130 | /* Canonicalize |
5131 | (plus (plus (mult (reg) (const)) (plus (reg) (const))) const) | |
3b3c6a3f MM |
5132 | into (plus (plus (mult (reg) (const)) (reg)) (const)). */ |
5133 | else if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 0)) == PLUS | |
5134 | && GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT | |
5135 | && GET_CODE (XEXP (XEXP (x, 0), 1)) == PLUS | |
5136 | && CONSTANT_P (XEXP (x, 1))) | |
5137 | { | |
00c79232 ML |
5138 | rtx constant; |
5139 | rtx other = NULL_RTX; | |
3b3c6a3f MM |
5140 | |
5141 | if (GET_CODE (XEXP (x, 1)) == CONST_INT) | |
5142 | { | |
5143 | constant = XEXP (x, 1); | |
5144 | other = XEXP (XEXP (XEXP (x, 0), 1), 1); | |
5145 | } | |
5146 | else if (GET_CODE (XEXP (XEXP (XEXP (x, 0), 1), 1)) == CONST_INT) | |
5147 | { | |
5148 | constant = XEXP (XEXP (XEXP (x, 0), 1), 1); | |
5149 | other = XEXP (x, 1); | |
5150 | } | |
5151 | else | |
5152 | constant = 0; | |
5153 | ||
5154 | if (constant) | |
5155 | { | |
5156 | changed = 1; | |
c5c76735 JL |
5157 | x = gen_rtx_PLUS (Pmode, |
5158 | gen_rtx_PLUS (Pmode, XEXP (XEXP (x, 0), 0), | |
5159 | XEXP (XEXP (XEXP (x, 0), 1), 0)), | |
5160 | plus_constant (other, INTVAL (constant))); | |
3b3c6a3f MM |
5161 | } |
5162 | } | |
5163 | ||
5164 | if (changed && legitimate_address_p (mode, x, FALSE)) | |
5165 | return x; | |
5166 | ||
5167 | if (GET_CODE (XEXP (x, 0)) == MULT) | |
5168 | { | |
5169 | changed = 1; | |
5170 | XEXP (x, 0) = force_operand (XEXP (x, 0), 0); | |
5171 | } | |
5172 | ||
5173 | if (GET_CODE (XEXP (x, 1)) == MULT) | |
5174 | { | |
5175 | changed = 1; | |
5176 | XEXP (x, 1) = force_operand (XEXP (x, 1), 0); | |
5177 | } | |
5178 | ||
5179 | if (changed | |
5180 | && GET_CODE (XEXP (x, 1)) == REG | |
5181 | && GET_CODE (XEXP (x, 0)) == REG) | |
5182 | return x; | |
5183 | ||
5184 | if (flag_pic && SYMBOLIC_CONST (XEXP (x, 1))) | |
5185 | { | |
5186 | changed = 1; | |
5187 | x = legitimize_pic_address (x, 0); | |
5188 | } | |
5189 | ||
5190 | if (changed && legitimate_address_p (mode, x, FALSE)) | |
5191 | return x; | |
5192 | ||
5193 | if (GET_CODE (XEXP (x, 0)) == REG) | |
5194 | { | |
5195 | register rtx temp = gen_reg_rtx (Pmode); | |
5196 | register rtx val = force_operand (XEXP (x, 1), temp); | |
5197 | if (val != temp) | |
5198 | emit_move_insn (temp, val); | |
5199 | ||
5200 | XEXP (x, 1) = temp; | |
5201 | return x; | |
5202 | } | |
5203 | ||
5204 | else if (GET_CODE (XEXP (x, 1)) == REG) | |
5205 | { | |
5206 | register rtx temp = gen_reg_rtx (Pmode); | |
5207 | register rtx val = force_operand (XEXP (x, 0), temp); | |
5208 | if (val != temp) | |
5209 | emit_move_insn (temp, val); | |
5210 | ||
5211 | XEXP (x, 0) = temp; | |
5212 | return x; | |
5213 | } | |
5214 | } | |
5215 | ||
5216 | return x; | |
5217 | } | |
2a2ab3f9 JVA |
5218 | \f |
5219 | /* Print an integer constant expression in assembler syntax. Addition | |
5220 | and subtraction are the only arithmetic that may appear in these | |
5221 | expressions. FILE is the stdio stream to write to, X is the rtx, and | |
5222 | CODE is the operand print code from the output string. */ | |
5223 | ||
5224 | static void | |
5225 | output_pic_addr_const (file, x, code) | |
5226 | FILE *file; | |
5227 | rtx x; | |
5228 | int code; | |
5229 | { | |
5230 | char buf[256]; | |
5231 | ||
5232 | switch (GET_CODE (x)) | |
5233 | { | |
5234 | case PC: | |
5235 | if (flag_pic) | |
5236 | putc ('.', file); | |
5237 | else | |
5238 | abort (); | |
5239 | break; | |
5240 | ||
5241 | case SYMBOL_REF: | |
91bb873f RH |
5242 | assemble_name (file, XSTR (x, 0)); |
5243 | if (code == 'P' && ! SYMBOL_REF_FLAG (x)) | |
5244 | fputs ("@PLT", file); | |
2a2ab3f9 JVA |
5245 | break; |
5246 | ||
91bb873f RH |
5247 | case LABEL_REF: |
5248 | x = XEXP (x, 0); | |
5249 | /* FALLTHRU */ | |
2a2ab3f9 JVA |
5250 | case CODE_LABEL: |
5251 | ASM_GENERATE_INTERNAL_LABEL (buf, "L", CODE_LABEL_NUMBER (x)); | |
5252 | assemble_name (asm_out_file, buf); | |
5253 | break; | |
5254 | ||
5255 | case CONST_INT: | |
f64cecad | 5256 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); |
2a2ab3f9 JVA |
5257 | break; |
5258 | ||
5259 | case CONST: | |
5260 | /* This used to output parentheses around the expression, | |
5261 | but that does not work on the 386 (either ATT or BSD assembler). */ | |
5262 | output_pic_addr_const (file, XEXP (x, 0), code); | |
5263 | break; | |
5264 | ||
5265 | case CONST_DOUBLE: | |
5266 | if (GET_MODE (x) == VOIDmode) | |
5267 | { | |
5268 | /* We can use %d if the number is <32 bits and positive. */ | |
5269 | if (CONST_DOUBLE_HIGH (x) || CONST_DOUBLE_LOW (x) < 0) | |
f64cecad JC |
5270 | fprintf (file, "0x%lx%08lx", |
5271 | (unsigned long) CONST_DOUBLE_HIGH (x), | |
5272 | (unsigned long) CONST_DOUBLE_LOW (x)); | |
2a2ab3f9 | 5273 | else |
f64cecad | 5274 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, CONST_DOUBLE_LOW (x)); |
2a2ab3f9 JVA |
5275 | } |
5276 | else | |
5277 | /* We can't handle floating point constants; | |
5278 | PRINT_OPERAND must handle them. */ | |
5279 | output_operand_lossage ("floating constant misused"); | |
5280 | break; | |
5281 | ||
5282 | case PLUS: | |
e9a25f70 | 5283 | /* Some assemblers need integer constants to appear first. */ |
2a2ab3f9 JVA |
5284 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) |
5285 | { | |
2a2ab3f9 | 5286 | output_pic_addr_const (file, XEXP (x, 0), code); |
e075ae69 | 5287 | putc ('+', file); |
e9a25f70 | 5288 | output_pic_addr_const (file, XEXP (x, 1), code); |
2a2ab3f9 | 5289 | } |
91bb873f | 5290 | else if (GET_CODE (XEXP (x, 1)) == CONST_INT) |
2a2ab3f9 | 5291 | { |
2a2ab3f9 | 5292 | output_pic_addr_const (file, XEXP (x, 1), code); |
e075ae69 | 5293 | putc ('+', file); |
e9a25f70 | 5294 | output_pic_addr_const (file, XEXP (x, 0), code); |
2a2ab3f9 | 5295 | } |
91bb873f RH |
5296 | else |
5297 | abort (); | |
2a2ab3f9 JVA |
5298 | break; |
5299 | ||
5300 | case MINUS: | |
80f33d06 | 5301 | putc (ASSEMBLER_DIALECT == ASM_INTEL ? '(' : '[', file); |
2a2ab3f9 | 5302 | output_pic_addr_const (file, XEXP (x, 0), code); |
e075ae69 | 5303 | putc ('-', file); |
2a2ab3f9 | 5304 | output_pic_addr_const (file, XEXP (x, 1), code); |
80f33d06 | 5305 | putc (ASSEMBLER_DIALECT == ASM_INTEL ? ')' : ']', file); |
2a2ab3f9 JVA |
5306 | break; |
5307 | ||
91bb873f RH |
5308 | case UNSPEC: |
5309 | if (XVECLEN (x, 0) != 1) | |
77ebd435 | 5310 | abort (); |
91bb873f RH |
5311 | output_pic_addr_const (file, XVECEXP (x, 0, 0), code); |
5312 | switch (XINT (x, 1)) | |
77ebd435 AJ |
5313 | { |
5314 | case 6: | |
5315 | fputs ("@GOT", file); | |
5316 | break; | |
5317 | case 7: | |
5318 | fputs ("@GOTOFF", file); | |
5319 | break; | |
5320 | case 8: | |
5321 | fputs ("@PLT", file); | |
5322 | break; | |
6eb791fc JH |
5323 | case 15: |
5324 | fputs ("@GOTPCREL(%RIP)", file); | |
5325 | break; | |
77ebd435 AJ |
5326 | default: |
5327 | output_operand_lossage ("invalid UNSPEC as operand"); | |
5328 | break; | |
5329 | } | |
91bb873f RH |
5330 | break; |
5331 | ||
2a2ab3f9 JVA |
5332 | default: |
5333 | output_operand_lossage ("invalid expression as operand"); | |
5334 | } | |
5335 | } | |
1865dbb5 | 5336 | |
0f290768 | 5337 | /* This is called from dwarfout.c via ASM_OUTPUT_DWARF_ADDR_CONST. |
1865dbb5 JM |
5338 | We need to handle our special PIC relocations. */ |
5339 | ||
0f290768 | 5340 | void |
1865dbb5 JM |
5341 | i386_dwarf_output_addr_const (file, x) |
5342 | FILE *file; | |
5343 | rtx x; | |
5344 | { | |
14f73b5a | 5345 | #ifdef ASM_QUAD |
18b5b8d6 | 5346 | fprintf (file, "%s", TARGET_64BIT ? ASM_QUAD : ASM_LONG); |
14f73b5a JH |
5347 | #else |
5348 | if (TARGET_64BIT) | |
5349 | abort (); | |
18b5b8d6 | 5350 | fprintf (file, "%s", ASM_LONG); |
14f73b5a | 5351 | #endif |
1865dbb5 JM |
5352 | if (flag_pic) |
5353 | output_pic_addr_const (file, x, '\0'); | |
5354 | else | |
5355 | output_addr_const (file, x); | |
5356 | fputc ('\n', file); | |
5357 | } | |
5358 | ||
5359 | /* In the name of slightly smaller debug output, and to cater to | |
5360 | general assembler losage, recognize PIC+GOTOFF and turn it back | |
5361 | into a direct symbol reference. */ | |
5362 | ||
5363 | rtx | |
5364 | i386_simplify_dwarf_addr (orig_x) | |
5365 | rtx orig_x; | |
5366 | { | |
5367 | rtx x = orig_x; | |
5368 | ||
6eb791fc JH |
5369 | if (TARGET_64BIT) |
5370 | { | |
5371 | if (GET_CODE (x) != CONST | |
5372 | || GET_CODE (XEXP (x, 0)) != UNSPEC | |
5373 | || XINT (XEXP (x, 0), 1) != 15) | |
5374 | return orig_x; | |
5375 | return XVECEXP (XEXP (x, 0), 0, 0); | |
5376 | } | |
5377 | ||
1865dbb5 JM |
5378 | if (GET_CODE (x) != PLUS |
5379 | || GET_CODE (XEXP (x, 0)) != REG | |
5380 | || GET_CODE (XEXP (x, 1)) != CONST) | |
5381 | return orig_x; | |
5382 | ||
5383 | x = XEXP (XEXP (x, 1), 0); | |
5384 | if (GET_CODE (x) == UNSPEC | |
3adbce3d RH |
5385 | && (XINT (x, 1) == 6 |
5386 | || XINT (x, 1) == 7)) | |
1865dbb5 JM |
5387 | return XVECEXP (x, 0, 0); |
5388 | ||
5389 | if (GET_CODE (x) == PLUS | |
5390 | && GET_CODE (XEXP (x, 0)) == UNSPEC | |
5391 | && GET_CODE (XEXP (x, 1)) == CONST_INT | |
3adbce3d RH |
5392 | && (XINT (XEXP (x, 0), 1) == 6 |
5393 | || XINT (XEXP (x, 0), 1) == 7)) | |
1865dbb5 JM |
5394 | return gen_rtx_PLUS (VOIDmode, XVECEXP (XEXP (x, 0), 0, 0), XEXP (x, 1)); |
5395 | ||
5396 | return orig_x; | |
5397 | } | |
2a2ab3f9 | 5398 | \f |
a269a03c | 5399 | static void |
e075ae69 | 5400 | put_condition_code (code, mode, reverse, fp, file) |
a269a03c | 5401 | enum rtx_code code; |
e075ae69 RH |
5402 | enum machine_mode mode; |
5403 | int reverse, fp; | |
a269a03c JC |
5404 | FILE *file; |
5405 | { | |
a269a03c JC |
5406 | const char *suffix; |
5407 | ||
9a915772 JH |
5408 | if (mode == CCFPmode || mode == CCFPUmode) |
5409 | { | |
5410 | enum rtx_code second_code, bypass_code; | |
5411 | ix86_fp_comparison_codes (code, &bypass_code, &code, &second_code); | |
5412 | if (bypass_code != NIL || second_code != NIL) | |
5413 | abort(); | |
5414 | code = ix86_fp_compare_code_to_integer (code); | |
5415 | mode = CCmode; | |
5416 | } | |
a269a03c JC |
5417 | if (reverse) |
5418 | code = reverse_condition (code); | |
e075ae69 | 5419 | |
a269a03c JC |
5420 | switch (code) |
5421 | { | |
5422 | case EQ: | |
5423 | suffix = "e"; | |
5424 | break; | |
a269a03c JC |
5425 | case NE: |
5426 | suffix = "ne"; | |
5427 | break; | |
a269a03c | 5428 | case GT: |
7e08e190 | 5429 | if (mode != CCmode && mode != CCNOmode && mode != CCGCmode) |
e075ae69 RH |
5430 | abort (); |
5431 | suffix = "g"; | |
a269a03c | 5432 | break; |
a269a03c | 5433 | case GTU: |
e075ae69 RH |
5434 | /* ??? Use "nbe" instead of "a" for fcmov losage on some assemblers. |
5435 | Those same assemblers have the same but opposite losage on cmov. */ | |
7e08e190 | 5436 | if (mode != CCmode) |
0f290768 | 5437 | abort (); |
e075ae69 | 5438 | suffix = fp ? "nbe" : "a"; |
a269a03c | 5439 | break; |
a269a03c | 5440 | case LT: |
9076b9c1 | 5441 | if (mode == CCNOmode || mode == CCGOCmode) |
a269a03c | 5442 | suffix = "s"; |
7e08e190 | 5443 | else if (mode == CCmode || mode == CCGCmode) |
e075ae69 | 5444 | suffix = "l"; |
9076b9c1 | 5445 | else |
0f290768 | 5446 | abort (); |
a269a03c | 5447 | break; |
a269a03c | 5448 | case LTU: |
9076b9c1 | 5449 | if (mode != CCmode) |
0f290768 | 5450 | abort (); |
a269a03c JC |
5451 | suffix = "b"; |
5452 | break; | |
a269a03c | 5453 | case GE: |
9076b9c1 | 5454 | if (mode == CCNOmode || mode == CCGOCmode) |
a269a03c | 5455 | suffix = "ns"; |
7e08e190 | 5456 | else if (mode == CCmode || mode == CCGCmode) |
e075ae69 | 5457 | suffix = "ge"; |
9076b9c1 | 5458 | else |
0f290768 | 5459 | abort (); |
a269a03c | 5460 | break; |
a269a03c | 5461 | case GEU: |
e075ae69 | 5462 | /* ??? As above. */ |
7e08e190 | 5463 | if (mode != CCmode) |
0f290768 | 5464 | abort (); |
7e08e190 | 5465 | suffix = fp ? "nb" : "ae"; |
a269a03c | 5466 | break; |
a269a03c | 5467 | case LE: |
7e08e190 | 5468 | if (mode != CCmode && mode != CCGCmode && mode != CCNOmode) |
e075ae69 RH |
5469 | abort (); |
5470 | suffix = "le"; | |
a269a03c | 5471 | break; |
a269a03c | 5472 | case LEU: |
9076b9c1 JH |
5473 | if (mode != CCmode) |
5474 | abort (); | |
7e08e190 | 5475 | suffix = "be"; |
a269a03c | 5476 | break; |
3a3677ff | 5477 | case UNORDERED: |
9e7adcb3 | 5478 | suffix = fp ? "u" : "p"; |
3a3677ff RH |
5479 | break; |
5480 | case ORDERED: | |
9e7adcb3 | 5481 | suffix = fp ? "nu" : "np"; |
3a3677ff | 5482 | break; |
a269a03c JC |
5483 | default: |
5484 | abort (); | |
5485 | } | |
5486 | fputs (suffix, file); | |
5487 | } | |
5488 | ||
e075ae69 RH |
5489 | void |
5490 | print_reg (x, code, file) | |
5491 | rtx x; | |
5492 | int code; | |
5493 | FILE *file; | |
e5cb57e8 | 5494 | { |
e075ae69 | 5495 | if (REGNO (x) == ARG_POINTER_REGNUM |
564d80f4 | 5496 | || REGNO (x) == FRAME_POINTER_REGNUM |
e075ae69 RH |
5497 | || REGNO (x) == FLAGS_REG |
5498 | || REGNO (x) == FPSR_REG) | |
5499 | abort (); | |
e9a25f70 | 5500 | |
80f33d06 | 5501 | if (ASSEMBLER_DIALECT == ASM_ATT || USER_LABEL_PREFIX[0] == 0) |
e075ae69 RH |
5502 | putc ('%', file); |
5503 | ||
ef6257cd | 5504 | if (code == 'w' || MMX_REG_P (x)) |
e075ae69 RH |
5505 | code = 2; |
5506 | else if (code == 'b') | |
5507 | code = 1; | |
5508 | else if (code == 'k') | |
5509 | code = 4; | |
3f3f2124 JH |
5510 | else if (code == 'q') |
5511 | code = 8; | |
e075ae69 RH |
5512 | else if (code == 'y') |
5513 | code = 3; | |
5514 | else if (code == 'h') | |
5515 | code = 0; | |
5516 | else | |
5517 | code = GET_MODE_SIZE (GET_MODE (x)); | |
e9a25f70 | 5518 | |
3f3f2124 JH |
5519 | /* Irritatingly, AMD extended registers use different naming convention |
5520 | from the normal registers. */ | |
5521 | if (REX_INT_REG_P (x)) | |
5522 | { | |
885a70fd JH |
5523 | if (!TARGET_64BIT) |
5524 | abort (); | |
3f3f2124 JH |
5525 | switch (code) |
5526 | { | |
ef6257cd | 5527 | case 0: |
c725bd79 | 5528 | error ("extended registers have no high halves"); |
3f3f2124 JH |
5529 | break; |
5530 | case 1: | |
5531 | fprintf (file, "r%ib", REGNO (x) - FIRST_REX_INT_REG + 8); | |
5532 | break; | |
5533 | case 2: | |
5534 | fprintf (file, "r%iw", REGNO (x) - FIRST_REX_INT_REG + 8); | |
5535 | break; | |
5536 | case 4: | |
5537 | fprintf (file, "r%id", REGNO (x) - FIRST_REX_INT_REG + 8); | |
5538 | break; | |
5539 | case 8: | |
5540 | fprintf (file, "r%i", REGNO (x) - FIRST_REX_INT_REG + 8); | |
5541 | break; | |
5542 | default: | |
c725bd79 | 5543 | error ("unsupported operand size for extended register"); |
3f3f2124 JH |
5544 | break; |
5545 | } | |
5546 | return; | |
5547 | } | |
e075ae69 RH |
5548 | switch (code) |
5549 | { | |
5550 | case 3: | |
5551 | if (STACK_TOP_P (x)) | |
5552 | { | |
5553 | fputs ("st(0)", file); | |
5554 | break; | |
5555 | } | |
5556 | /* FALLTHRU */ | |
e075ae69 | 5557 | case 8: |
3f3f2124 | 5558 | case 4: |
e075ae69 | 5559 | case 12: |
446988df | 5560 | if (! ANY_FP_REG_P (x)) |
885a70fd | 5561 | putc (code == 8 && TARGET_64BIT ? 'r' : 'e', file); |
e075ae69 | 5562 | /* FALLTHRU */ |
a7180f70 | 5563 | case 16: |
e075ae69 RH |
5564 | case 2: |
5565 | fputs (hi_reg_name[REGNO (x)], file); | |
5566 | break; | |
5567 | case 1: | |
5568 | fputs (qi_reg_name[REGNO (x)], file); | |
5569 | break; | |
5570 | case 0: | |
5571 | fputs (qi_high_reg_name[REGNO (x)], file); | |
5572 | break; | |
5573 | default: | |
5574 | abort (); | |
fe25fea3 | 5575 | } |
e5cb57e8 SC |
5576 | } |
5577 | ||
2a2ab3f9 | 5578 | /* Meaning of CODE: |
fe25fea3 | 5579 | L,W,B,Q,S,T -- print the opcode suffix for specified size of operand. |
e5cb57e8 | 5580 | C -- print opcode suffix for set/cmov insn. |
fe25fea3 | 5581 | c -- like C, but print reversed condition |
ef6257cd | 5582 | F,f -- likewise, but for floating-point. |
2a2ab3f9 JVA |
5583 | R -- print the prefix for register names. |
5584 | z -- print the opcode suffix for the size of the current operand. | |
5585 | * -- print a star (in certain assembler syntax) | |
fb204271 | 5586 | A -- print an absolute memory reference. |
2a2ab3f9 | 5587 | w -- print the operand as if it's a "word" (HImode) even if it isn't. |
2d49677f SC |
5588 | s -- print a shift double count, followed by the assemblers argument |
5589 | delimiter. | |
fe25fea3 SC |
5590 | b -- print the QImode name of the register for the indicated operand. |
5591 | %b0 would print %al if operands[0] is reg 0. | |
5592 | w -- likewise, print the HImode name of the register. | |
5593 | k -- likewise, print the SImode name of the register. | |
3f3f2124 | 5594 | q -- likewise, print the DImode name of the register. |
ef6257cd JH |
5595 | h -- print the QImode name for a "high" register, either ah, bh, ch or dh. |
5596 | y -- print "st(0)" instead of "st" as a register. | |
a46d1d38 | 5597 | D -- print condition for SSE cmp instruction. |
ef6257cd JH |
5598 | P -- if PIC, print an @PLT suffix. |
5599 | X -- don't print any sort of PIC '@' suffix for a symbol. | |
a46d1d38 | 5600 | */ |
2a2ab3f9 JVA |
5601 | |
5602 | void | |
5603 | print_operand (file, x, code) | |
5604 | FILE *file; | |
5605 | rtx x; | |
5606 | int code; | |
5607 | { | |
5608 | if (code) | |
5609 | { | |
5610 | switch (code) | |
5611 | { | |
5612 | case '*': | |
80f33d06 | 5613 | if (ASSEMBLER_DIALECT == ASM_ATT) |
2a2ab3f9 JVA |
5614 | putc ('*', file); |
5615 | return; | |
5616 | ||
fb204271 | 5617 | case 'A': |
80f33d06 | 5618 | if (ASSEMBLER_DIALECT == ASM_ATT) |
fb204271 | 5619 | putc ('*', file); |
80f33d06 | 5620 | else if (ASSEMBLER_DIALECT == ASM_INTEL) |
fb204271 DN |
5621 | { |
5622 | /* Intel syntax. For absolute addresses, registers should not | |
5623 | be surrounded by braces. */ | |
5624 | if (GET_CODE (x) != REG) | |
5625 | { | |
5626 | putc ('[', file); | |
5627 | PRINT_OPERAND (file, x, 0); | |
5628 | putc (']', file); | |
5629 | return; | |
5630 | } | |
5631 | } | |
80f33d06 GS |
5632 | else |
5633 | abort (); | |
fb204271 DN |
5634 | |
5635 | PRINT_OPERAND (file, x, 0); | |
5636 | return; | |
5637 | ||
5638 | ||
2a2ab3f9 | 5639 | case 'L': |
80f33d06 | 5640 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5641 | putc ('l', file); |
2a2ab3f9 JVA |
5642 | return; |
5643 | ||
5644 | case 'W': | |
80f33d06 | 5645 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5646 | putc ('w', file); |
2a2ab3f9 JVA |
5647 | return; |
5648 | ||
5649 | case 'B': | |
80f33d06 | 5650 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5651 | putc ('b', file); |
2a2ab3f9 JVA |
5652 | return; |
5653 | ||
5654 | case 'Q': | |
80f33d06 | 5655 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5656 | putc ('l', file); |
2a2ab3f9 JVA |
5657 | return; |
5658 | ||
5659 | case 'S': | |
80f33d06 | 5660 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5661 | putc ('s', file); |
2a2ab3f9 JVA |
5662 | return; |
5663 | ||
5f1ec3e6 | 5664 | case 'T': |
80f33d06 | 5665 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5666 | putc ('t', file); |
5f1ec3e6 JVA |
5667 | return; |
5668 | ||
2a2ab3f9 JVA |
5669 | case 'z': |
5670 | /* 387 opcodes don't get size suffixes if the operands are | |
0f290768 | 5671 | registers. */ |
2a2ab3f9 JVA |
5672 | |
5673 | if (STACK_REG_P (x)) | |
5674 | return; | |
5675 | ||
5676 | /* this is the size of op from size of operand */ | |
5677 | switch (GET_MODE_SIZE (GET_MODE (x))) | |
5678 | { | |
2a2ab3f9 | 5679 | case 2: |
155d8a47 JW |
5680 | #ifdef HAVE_GAS_FILDS_FISTS |
5681 | putc ('s', file); | |
5682 | #endif | |
2a2ab3f9 JVA |
5683 | return; |
5684 | ||
5685 | case 4: | |
5686 | if (GET_MODE (x) == SFmode) | |
5687 | { | |
e075ae69 | 5688 | putc ('s', file); |
2a2ab3f9 JVA |
5689 | return; |
5690 | } | |
5691 | else | |
e075ae69 | 5692 | putc ('l', file); |
2a2ab3f9 JVA |
5693 | return; |
5694 | ||
5f1ec3e6 | 5695 | case 12: |
2b589241 | 5696 | case 16: |
e075ae69 RH |
5697 | putc ('t', file); |
5698 | return; | |
5f1ec3e6 | 5699 | |
2a2ab3f9 JVA |
5700 | case 8: |
5701 | if (GET_MODE_CLASS (GET_MODE (x)) == MODE_INT) | |
56c0e8fa JVA |
5702 | { |
5703 | #ifdef GAS_MNEMONICS | |
e075ae69 | 5704 | putc ('q', file); |
56c0e8fa | 5705 | #else |
e075ae69 RH |
5706 | putc ('l', file); |
5707 | putc ('l', file); | |
56c0e8fa JVA |
5708 | #endif |
5709 | } | |
e075ae69 RH |
5710 | else |
5711 | putc ('l', file); | |
2a2ab3f9 | 5712 | return; |
155d8a47 JW |
5713 | |
5714 | default: | |
5715 | abort (); | |
2a2ab3f9 | 5716 | } |
4af3895e JVA |
5717 | |
5718 | case 'b': | |
5719 | case 'w': | |
5720 | case 'k': | |
3f3f2124 | 5721 | case 'q': |
4af3895e JVA |
5722 | case 'h': |
5723 | case 'y': | |
5cb6195d | 5724 | case 'X': |
e075ae69 | 5725 | case 'P': |
4af3895e JVA |
5726 | break; |
5727 | ||
2d49677f SC |
5728 | case 's': |
5729 | if (GET_CODE (x) == CONST_INT || ! SHIFT_DOUBLE_OMITS_COUNT) | |
5730 | { | |
5731 | PRINT_OPERAND (file, x, 0); | |
e075ae69 | 5732 | putc (',', file); |
2d49677f | 5733 | } |
a269a03c JC |
5734 | return; |
5735 | ||
a46d1d38 JH |
5736 | case 'D': |
5737 | /* Little bit of braindamage here. The SSE compare instructions | |
5738 | does use completely different names for the comparisons that the | |
5739 | fp conditional moves. */ | |
5740 | switch (GET_CODE (x)) | |
5741 | { | |
5742 | case EQ: | |
5743 | case UNEQ: | |
5744 | fputs ("eq", file); | |
5745 | break; | |
5746 | case LT: | |
5747 | case UNLT: | |
5748 | fputs ("lt", file); | |
5749 | break; | |
5750 | case LE: | |
5751 | case UNLE: | |
5752 | fputs ("le", file); | |
5753 | break; | |
5754 | case UNORDERED: | |
5755 | fputs ("unord", file); | |
5756 | break; | |
5757 | case NE: | |
5758 | case LTGT: | |
5759 | fputs ("neq", file); | |
5760 | break; | |
5761 | case UNGE: | |
5762 | case GE: | |
5763 | fputs ("nlt", file); | |
5764 | break; | |
5765 | case UNGT: | |
5766 | case GT: | |
5767 | fputs ("nle", file); | |
5768 | break; | |
5769 | case ORDERED: | |
5770 | fputs ("ord", file); | |
5771 | break; | |
5772 | default: | |
5773 | abort (); | |
5774 | break; | |
5775 | } | |
5776 | return; | |
1853aadd | 5777 | case 'C': |
e075ae69 | 5778 | put_condition_code (GET_CODE (x), GET_MODE (XEXP (x, 0)), 0, 0, file); |
1853aadd | 5779 | return; |
fe25fea3 | 5780 | case 'F': |
e075ae69 | 5781 | put_condition_code (GET_CODE (x), GET_MODE (XEXP (x, 0)), 0, 1, file); |
fe25fea3 SC |
5782 | return; |
5783 | ||
e9a25f70 | 5784 | /* Like above, but reverse condition */ |
e075ae69 | 5785 | case 'c': |
c1d5afc4 CR |
5786 | /* Check to see if argument to %c is really a constant |
5787 | and not a condition code which needs to be reversed. */ | |
5788 | if (GET_RTX_CLASS (GET_CODE (x)) != '<') | |
5789 | { | |
5790 | output_operand_lossage ("operand is neither a constant nor a condition code, invalid operand code 'c'"); | |
5791 | return; | |
5792 | } | |
e075ae69 RH |
5793 | put_condition_code (GET_CODE (x), GET_MODE (XEXP (x, 0)), 1, 0, file); |
5794 | return; | |
fe25fea3 | 5795 | case 'f': |
e075ae69 | 5796 | put_condition_code (GET_CODE (x), GET_MODE (XEXP (x, 0)), 1, 1, file); |
1853aadd | 5797 | return; |
ef6257cd JH |
5798 | case '+': |
5799 | { | |
5800 | rtx x; | |
e5cb57e8 | 5801 | |
ef6257cd JH |
5802 | if (!optimize || optimize_size || !TARGET_BRANCH_PREDICTION_HINTS) |
5803 | return; | |
a4f31c00 | 5804 | |
ef6257cd JH |
5805 | x = find_reg_note (current_output_insn, REG_BR_PROB, 0); |
5806 | if (x) | |
5807 | { | |
5808 | int pred_val = INTVAL (XEXP (x, 0)); | |
5809 | ||
5810 | if (pred_val < REG_BR_PROB_BASE * 45 / 100 | |
5811 | || pred_val > REG_BR_PROB_BASE * 55 / 100) | |
5812 | { | |
5813 | int taken = pred_val > REG_BR_PROB_BASE / 2; | |
5814 | int cputaken = final_forward_branch_p (current_output_insn) == 0; | |
5815 | ||
5816 | /* Emit hints only in the case default branch prediction | |
5817 | heruistics would fail. */ | |
5818 | if (taken != cputaken) | |
5819 | { | |
5820 | /* We use 3e (DS) prefix for taken branches and | |
5821 | 2e (CS) prefix for not taken branches. */ | |
5822 | if (taken) | |
5823 | fputs ("ds ; ", file); | |
5824 | else | |
5825 | fputs ("cs ; ", file); | |
5826 | } | |
5827 | } | |
5828 | } | |
5829 | return; | |
5830 | } | |
4af3895e | 5831 | default: |
68daafd4 JVA |
5832 | { |
5833 | char str[50]; | |
68daafd4 JVA |
5834 | sprintf (str, "invalid operand code `%c'", code); |
5835 | output_operand_lossage (str); | |
5836 | } | |
2a2ab3f9 JVA |
5837 | } |
5838 | } | |
e9a25f70 | 5839 | |
2a2ab3f9 JVA |
5840 | if (GET_CODE (x) == REG) |
5841 | { | |
5842 | PRINT_REG (x, code, file); | |
5843 | } | |
e9a25f70 | 5844 | |
2a2ab3f9 JVA |
5845 | else if (GET_CODE (x) == MEM) |
5846 | { | |
e075ae69 | 5847 | /* No `byte ptr' prefix for call instructions. */ |
80f33d06 | 5848 | if (ASSEMBLER_DIALECT == ASM_INTEL && code != 'X' && code != 'P') |
2a2ab3f9 | 5849 | { |
69ddee61 | 5850 | const char * size; |
e075ae69 RH |
5851 | switch (GET_MODE_SIZE (GET_MODE (x))) |
5852 | { | |
5853 | case 1: size = "BYTE"; break; | |
5854 | case 2: size = "WORD"; break; | |
5855 | case 4: size = "DWORD"; break; | |
5856 | case 8: size = "QWORD"; break; | |
5857 | case 12: size = "XWORD"; break; | |
a7180f70 | 5858 | case 16: size = "XMMWORD"; break; |
e075ae69 | 5859 | default: |
564d80f4 | 5860 | abort (); |
e075ae69 | 5861 | } |
fb204271 DN |
5862 | |
5863 | /* Check for explicit size override (codes 'b', 'w' and 'k') */ | |
5864 | if (code == 'b') | |
5865 | size = "BYTE"; | |
5866 | else if (code == 'w') | |
5867 | size = "WORD"; | |
5868 | else if (code == 'k') | |
5869 | size = "DWORD"; | |
5870 | ||
e075ae69 RH |
5871 | fputs (size, file); |
5872 | fputs (" PTR ", file); | |
2a2ab3f9 | 5873 | } |
e075ae69 RH |
5874 | |
5875 | x = XEXP (x, 0); | |
5876 | if (flag_pic && CONSTANT_ADDRESS_P (x)) | |
5877 | output_pic_addr_const (file, x, code); | |
0d7d98ee JH |
5878 | /* Avoid (%rip) for call operands. */ |
5879 | else if (CONSTANT_ADDRESS_P (x) && code =='P' | |
5880 | && GET_CODE (x) != CONST_INT) | |
5881 | output_addr_const (file, x); | |
2a2ab3f9 | 5882 | else |
e075ae69 | 5883 | output_address (x); |
2a2ab3f9 | 5884 | } |
e9a25f70 | 5885 | |
2a2ab3f9 JVA |
5886 | else if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == SFmode) |
5887 | { | |
e9a25f70 JL |
5888 | REAL_VALUE_TYPE r; |
5889 | long l; | |
5890 | ||
5f1ec3e6 JVA |
5891 | REAL_VALUE_FROM_CONST_DOUBLE (r, x); |
5892 | REAL_VALUE_TO_TARGET_SINGLE (r, l); | |
e075ae69 | 5893 | |
80f33d06 | 5894 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 | 5895 | putc ('$', file); |
52267fcb | 5896 | fprintf (file, "0x%lx", l); |
5f1ec3e6 | 5897 | } |
e9a25f70 | 5898 | |
0f290768 | 5899 | /* These float cases don't actually occur as immediate operands. */ |
5f1ec3e6 JVA |
5900 | else if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == DFmode) |
5901 | { | |
e9a25f70 JL |
5902 | REAL_VALUE_TYPE r; |
5903 | char dstr[30]; | |
5904 | ||
5f1ec3e6 JVA |
5905 | REAL_VALUE_FROM_CONST_DOUBLE (r, x); |
5906 | REAL_VALUE_TO_DECIMAL (r, "%.22e", dstr); | |
5907 | fprintf (file, "%s", dstr); | |
2a2ab3f9 | 5908 | } |
e9a25f70 | 5909 | |
2b589241 JH |
5910 | else if (GET_CODE (x) == CONST_DOUBLE |
5911 | && (GET_MODE (x) == XFmode || GET_MODE (x) == TFmode)) | |
2a2ab3f9 | 5912 | { |
e9a25f70 JL |
5913 | REAL_VALUE_TYPE r; |
5914 | char dstr[30]; | |
5915 | ||
5f1ec3e6 JVA |
5916 | REAL_VALUE_FROM_CONST_DOUBLE (r, x); |
5917 | REAL_VALUE_TO_DECIMAL (r, "%.22e", dstr); | |
5918 | fprintf (file, "%s", dstr); | |
2a2ab3f9 | 5919 | } |
79325812 | 5920 | else |
2a2ab3f9 | 5921 | { |
4af3895e | 5922 | if (code != 'P') |
2a2ab3f9 | 5923 | { |
695dac07 | 5924 | if (GET_CODE (x) == CONST_INT || GET_CODE (x) == CONST_DOUBLE) |
e075ae69 | 5925 | { |
80f33d06 | 5926 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 RH |
5927 | putc ('$', file); |
5928 | } | |
2a2ab3f9 JVA |
5929 | else if (GET_CODE (x) == CONST || GET_CODE (x) == SYMBOL_REF |
5930 | || GET_CODE (x) == LABEL_REF) | |
e075ae69 | 5931 | { |
80f33d06 | 5932 | if (ASSEMBLER_DIALECT == ASM_ATT) |
e075ae69 RH |
5933 | putc ('$', file); |
5934 | else | |
5935 | fputs ("OFFSET FLAT:", file); | |
5936 | } | |
2a2ab3f9 | 5937 | } |
e075ae69 RH |
5938 | if (GET_CODE (x) == CONST_INT) |
5939 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
5940 | else if (flag_pic) | |
2a2ab3f9 JVA |
5941 | output_pic_addr_const (file, x, code); |
5942 | else | |
5943 | output_addr_const (file, x); | |
5944 | } | |
5945 | } | |
5946 | \f | |
5947 | /* Print a memory operand whose address is ADDR. */ | |
5948 | ||
5949 | void | |
5950 | print_operand_address (file, addr) | |
5951 | FILE *file; | |
5952 | register rtx addr; | |
5953 | { | |
e075ae69 RH |
5954 | struct ix86_address parts; |
5955 | rtx base, index, disp; | |
5956 | int scale; | |
e9a25f70 | 5957 | |
e075ae69 RH |
5958 | if (! ix86_decompose_address (addr, &parts)) |
5959 | abort (); | |
e9a25f70 | 5960 | |
e075ae69 RH |
5961 | base = parts.base; |
5962 | index = parts.index; | |
5963 | disp = parts.disp; | |
5964 | scale = parts.scale; | |
e9a25f70 | 5965 | |
e075ae69 RH |
5966 | if (!base && !index) |
5967 | { | |
5968 | /* Displacement only requires special attention. */ | |
e9a25f70 | 5969 | |
e075ae69 | 5970 | if (GET_CODE (disp) == CONST_INT) |
2a2ab3f9 | 5971 | { |
80f33d06 | 5972 | if (ASSEMBLER_DIALECT == ASM_INTEL) |
fb204271 DN |
5973 | { |
5974 | if (USER_LABEL_PREFIX[0] == 0) | |
5975 | putc ('%', file); | |
5976 | fputs ("ds:", file); | |
5977 | } | |
e075ae69 | 5978 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (addr)); |
2a2ab3f9 | 5979 | } |
e075ae69 RH |
5980 | else if (flag_pic) |
5981 | output_pic_addr_const (file, addr, 0); | |
5982 | else | |
5983 | output_addr_const (file, addr); | |
0d7d98ee JH |
5984 | |
5985 | /* Use one byte shorter RIP relative addressing for 64bit mode. */ | |
5986 | if (GET_CODE (disp) != CONST_INT && TARGET_64BIT) | |
5987 | fputs ("(%rip)", file); | |
e075ae69 RH |
5988 | } |
5989 | else | |
5990 | { | |
80f33d06 | 5991 | if (ASSEMBLER_DIALECT == ASM_ATT) |
2a2ab3f9 | 5992 | { |
e075ae69 | 5993 | if (disp) |
2a2ab3f9 | 5994 | { |
c399861d | 5995 | if (flag_pic) |
e075ae69 RH |
5996 | output_pic_addr_const (file, disp, 0); |
5997 | else if (GET_CODE (disp) == LABEL_REF) | |
5998 | output_asm_label (disp); | |
2a2ab3f9 | 5999 | else |
e075ae69 | 6000 | output_addr_const (file, disp); |
2a2ab3f9 JVA |
6001 | } |
6002 | ||
e075ae69 RH |
6003 | putc ('(', file); |
6004 | if (base) | |
6005 | PRINT_REG (base, 0, file); | |
6006 | if (index) | |
2a2ab3f9 | 6007 | { |
e075ae69 RH |
6008 | putc (',', file); |
6009 | PRINT_REG (index, 0, file); | |
6010 | if (scale != 1) | |
6011 | fprintf (file, ",%d", scale); | |
2a2ab3f9 | 6012 | } |
e075ae69 | 6013 | putc (')', file); |
2a2ab3f9 | 6014 | } |
2a2ab3f9 JVA |
6015 | else |
6016 | { | |
e075ae69 | 6017 | rtx offset = NULL_RTX; |
e9a25f70 | 6018 | |
e075ae69 RH |
6019 | if (disp) |
6020 | { | |
6021 | /* Pull out the offset of a symbol; print any symbol itself. */ | |
6022 | if (GET_CODE (disp) == CONST | |
6023 | && GET_CODE (XEXP (disp, 0)) == PLUS | |
6024 | && GET_CODE (XEXP (XEXP (disp, 0), 1)) == CONST_INT) | |
6025 | { | |
6026 | offset = XEXP (XEXP (disp, 0), 1); | |
6027 | disp = gen_rtx_CONST (VOIDmode, | |
6028 | XEXP (XEXP (disp, 0), 0)); | |
6029 | } | |
ce193852 | 6030 | |
e075ae69 RH |
6031 | if (flag_pic) |
6032 | output_pic_addr_const (file, disp, 0); | |
6033 | else if (GET_CODE (disp) == LABEL_REF) | |
6034 | output_asm_label (disp); | |
6035 | else if (GET_CODE (disp) == CONST_INT) | |
6036 | offset = disp; | |
6037 | else | |
6038 | output_addr_const (file, disp); | |
6039 | } | |
e9a25f70 | 6040 | |
e075ae69 RH |
6041 | putc ('[', file); |
6042 | if (base) | |
a8620236 | 6043 | { |
e075ae69 RH |
6044 | PRINT_REG (base, 0, file); |
6045 | if (offset) | |
6046 | { | |
6047 | if (INTVAL (offset) >= 0) | |
6048 | putc ('+', file); | |
6049 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (offset)); | |
6050 | } | |
a8620236 | 6051 | } |
e075ae69 RH |
6052 | else if (offset) |
6053 | fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (offset)); | |
2247a58c | 6054 | else |
e075ae69 | 6055 | putc ('0', file); |
e9a25f70 | 6056 | |
e075ae69 RH |
6057 | if (index) |
6058 | { | |
6059 | putc ('+', file); | |
6060 | PRINT_REG (index, 0, file); | |
6061 | if (scale != 1) | |
6062 | fprintf (file, "*%d", scale); | |
6063 | } | |
6064 | putc (']', file); | |
6065 | } | |
2a2ab3f9 JVA |
6066 | } |
6067 | } | |
6068 | \f | |
6069 | /* Split one or more DImode RTL references into pairs of SImode | |
6070 | references. The RTL can be REG, offsettable MEM, integer constant, or | |
6071 | CONST_DOUBLE. "operands" is a pointer to an array of DImode RTL to | |
6072 | split and "num" is its length. lo_half and hi_half are output arrays | |
0f290768 | 6073 | that parallel "operands". */ |
2a2ab3f9 JVA |
6074 | |
6075 | void | |
6076 | split_di (operands, num, lo_half, hi_half) | |
6077 | rtx operands[]; | |
6078 | int num; | |
6079 | rtx lo_half[], hi_half[]; | |
6080 | { | |
6081 | while (num--) | |
6082 | { | |
57dbca5e | 6083 | rtx op = operands[num]; |
b932f770 JH |
6084 | |
6085 | /* simplify_subreg refuse to split volatile memory addresses, | |
6086 | but we still have to handle it. */ | |
6087 | if (GET_CODE (op) == MEM) | |
2a2ab3f9 | 6088 | { |
f4ef873c | 6089 | lo_half[num] = adjust_address (op, SImode, 0); |
b72f00af | 6090 | hi_half[num] = adjust_address (op, SImode, 4); |
2a2ab3f9 JVA |
6091 | } |
6092 | else | |
b932f770 | 6093 | { |
38ca929b JH |
6094 | lo_half[num] = simplify_gen_subreg (SImode, op, |
6095 | GET_MODE (op) == VOIDmode | |
6096 | ? DImode : GET_MODE (op), 0); | |
6097 | hi_half[num] = simplify_gen_subreg (SImode, op, | |
6098 | GET_MODE (op) == VOIDmode | |
6099 | ? DImode : GET_MODE (op), 4); | |
b932f770 | 6100 | } |
2a2ab3f9 JVA |
6101 | } |
6102 | } | |
44cf5b6a JH |
6103 | /* Split one or more TImode RTL references into pairs of SImode |
6104 | references. The RTL can be REG, offsettable MEM, integer constant, or | |
6105 | CONST_DOUBLE. "operands" is a pointer to an array of DImode RTL to | |
6106 | split and "num" is its length. lo_half and hi_half are output arrays | |
6107 | that parallel "operands". */ | |
6108 | ||
6109 | void | |
6110 | split_ti (operands, num, lo_half, hi_half) | |
6111 | rtx operands[]; | |
6112 | int num; | |
6113 | rtx lo_half[], hi_half[]; | |
6114 | { | |
6115 | while (num--) | |
6116 | { | |
6117 | rtx op = operands[num]; | |
b932f770 JH |
6118 | |
6119 | /* simplify_subreg refuse to split volatile memory addresses, but we | |
6120 | still have to handle it. */ | |
6121 | if (GET_CODE (op) == MEM) | |
44cf5b6a JH |
6122 | { |
6123 | lo_half[num] = adjust_address (op, DImode, 0); | |
6124 | hi_half[num] = adjust_address (op, DImode, 8); | |
6125 | } | |
6126 | else | |
b932f770 JH |
6127 | { |
6128 | lo_half[num] = simplify_gen_subreg (DImode, op, TImode, 0); | |
6129 | hi_half[num] = simplify_gen_subreg (DImode, op, TImode, 8); | |
6130 | } | |
44cf5b6a JH |
6131 | } |
6132 | } | |
2a2ab3f9 | 6133 | \f |
2a2ab3f9 JVA |
6134 | /* Output code to perform a 387 binary operation in INSN, one of PLUS, |
6135 | MINUS, MULT or DIV. OPERANDS are the insn operands, where operands[3] | |
6136 | is the expression of the binary operation. The output may either be | |
6137 | emitted here, or returned to the caller, like all output_* functions. | |
6138 | ||
6139 | There is no guarantee that the operands are the same mode, as they | |
0f290768 | 6140 | might be within FLOAT or FLOAT_EXTEND expressions. */ |
2a2ab3f9 | 6141 | |
e3c2afab AM |
6142 | #ifndef SYSV386_COMPAT |
6143 | /* Set to 1 for compatibility with brain-damaged assemblers. No-one | |
6144 | wants to fix the assemblers because that causes incompatibility | |
6145 | with gcc. No-one wants to fix gcc because that causes | |
6146 | incompatibility with assemblers... You can use the option of | |
6147 | -DSYSV386_COMPAT=0 if you recompile both gcc and gas this way. */ | |
6148 | #define SYSV386_COMPAT 1 | |
6149 | #endif | |
6150 | ||
69ddee61 | 6151 | const char * |
2a2ab3f9 JVA |
6152 | output_387_binary_op (insn, operands) |
6153 | rtx insn; | |
6154 | rtx *operands; | |
6155 | { | |
e3c2afab | 6156 | static char buf[30]; |
69ddee61 | 6157 | const char *p; |
1deaa899 JH |
6158 | const char *ssep; |
6159 | int is_sse = SSE_REG_P (operands[0]) | SSE_REG_P (operands[1]) | SSE_REG_P (operands[2]); | |
2a2ab3f9 | 6160 | |
e3c2afab AM |
6161 | #ifdef ENABLE_CHECKING |
6162 | /* Even if we do not want to check the inputs, this documents input | |
6163 | constraints. Which helps in understanding the following code. */ | |
6164 | if (STACK_REG_P (operands[0]) | |
6165 | && ((REG_P (operands[1]) | |
6166 | && REGNO (operands[0]) == REGNO (operands[1]) | |
6167 | && (STACK_REG_P (operands[2]) || GET_CODE (operands[2]) == MEM)) | |
6168 | || (REG_P (operands[2]) | |
6169 | && REGNO (operands[0]) == REGNO (operands[2]) | |
6170 | && (STACK_REG_P (operands[1]) || GET_CODE (operands[1]) == MEM))) | |
6171 | && (STACK_TOP_P (operands[1]) || STACK_TOP_P (operands[2]))) | |
6172 | ; /* ok */ | |
1deaa899 | 6173 | else if (!is_sse) |
e3c2afab AM |
6174 | abort (); |
6175 | #endif | |
6176 | ||
2a2ab3f9 JVA |
6177 | switch (GET_CODE (operands[3])) |
6178 | { | |
6179 | case PLUS: | |
e075ae69 RH |
6180 | if (GET_MODE_CLASS (GET_MODE (operands[1])) == MODE_INT |
6181 | || GET_MODE_CLASS (GET_MODE (operands[2])) == MODE_INT) | |
6182 | p = "fiadd"; | |
6183 | else | |
6184 | p = "fadd"; | |
1deaa899 | 6185 | ssep = "add"; |
2a2ab3f9 JVA |
6186 | break; |
6187 | ||
6188 | case MINUS: | |
e075ae69 RH |
6189 | if (GET_MODE_CLASS (GET_MODE (operands[1])) == MODE_INT |
6190 | || GET_MODE_CLASS (GET_MODE (operands[2])) == MODE_INT) | |
6191 | p = "fisub"; | |
6192 | else | |
6193 | p = "fsub"; | |
1deaa899 | 6194 | ssep = "sub"; |
2a2ab3f9 JVA |
6195 | break; |
6196 | ||
6197 | case MULT: | |
e075ae69 RH |
6198 | if (GET_MODE_CLASS (GET_MODE (operands[1])) == MODE_INT |
6199 | || GET_MODE_CLASS (GET_MODE (operands[2])) == MODE_INT) | |
6200 | p = "fimul"; | |
6201 | else | |
6202 | p = "fmul"; | |
1deaa899 | 6203 | ssep = "mul"; |
2a2ab3f9 JVA |
6204 | break; |
6205 | ||
6206 | case DIV: | |
e075ae69 RH |
6207 | if (GET_MODE_CLASS (GET_MODE (operands[1])) == MODE_INT |
6208 | || GET_MODE_CLASS (GET_MODE (operands[2])) == MODE_INT) | |
6209 | p = "fidiv"; | |
6210 | else | |
6211 | p = "fdiv"; | |
1deaa899 | 6212 | ssep = "div"; |
2a2ab3f9 JVA |
6213 | break; |
6214 | ||
6215 | default: | |
6216 | abort (); | |
6217 | } | |
6218 | ||
1deaa899 JH |
6219 | if (is_sse) |
6220 | { | |
6221 | strcpy (buf, ssep); | |
6222 | if (GET_MODE (operands[0]) == SFmode) | |
6223 | strcat (buf, "ss\t{%2, %0|%0, %2}"); | |
6224 | else | |
6225 | strcat (buf, "sd\t{%2, %0|%0, %2}"); | |
6226 | return buf; | |
6227 | } | |
e075ae69 | 6228 | strcpy (buf, p); |
2a2ab3f9 JVA |
6229 | |
6230 | switch (GET_CODE (operands[3])) | |
6231 | { | |
6232 | case MULT: | |
6233 | case PLUS: | |
6234 | if (REG_P (operands[2]) && REGNO (operands[0]) == REGNO (operands[2])) | |
6235 | { | |
e3c2afab | 6236 | rtx temp = operands[2]; |
2a2ab3f9 JVA |
6237 | operands[2] = operands[1]; |
6238 | operands[1] = temp; | |
6239 | } | |
6240 | ||
e3c2afab AM |
6241 | /* know operands[0] == operands[1]. */ |
6242 | ||
2a2ab3f9 | 6243 | if (GET_CODE (operands[2]) == MEM) |
e075ae69 RH |
6244 | { |
6245 | p = "%z2\t%2"; | |
6246 | break; | |
6247 | } | |
2a2ab3f9 JVA |
6248 | |
6249 | if (find_regno_note (insn, REG_DEAD, REGNO (operands[2]))) | |
6b28fd63 JL |
6250 | { |
6251 | if (STACK_TOP_P (operands[0])) | |
e3c2afab AM |
6252 | /* How is it that we are storing to a dead operand[2]? |
6253 | Well, presumably operands[1] is dead too. We can't | |
6254 | store the result to st(0) as st(0) gets popped on this | |
6255 | instruction. Instead store to operands[2] (which I | |
6256 | think has to be st(1)). st(1) will be popped later. | |
6257 | gcc <= 2.8.1 didn't have this check and generated | |
6258 | assembly code that the Unixware assembler rejected. */ | |
6259 | p = "p\t{%0, %2|%2, %0}"; /* st(1) = st(0) op st(1); pop */ | |
6b28fd63 | 6260 | else |
e3c2afab | 6261 | p = "p\t{%2, %0|%0, %2}"; /* st(r1) = st(r1) op st(0); pop */ |
e075ae69 | 6262 | break; |
6b28fd63 | 6263 | } |
2a2ab3f9 JVA |
6264 | |
6265 | if (STACK_TOP_P (operands[0])) | |
e3c2afab | 6266 | p = "\t{%y2, %0|%0, %y2}"; /* st(0) = st(0) op st(r2) */ |
2a2ab3f9 | 6267 | else |
e3c2afab | 6268 | p = "\t{%2, %0|%0, %2}"; /* st(r1) = st(r1) op st(0) */ |
e075ae69 | 6269 | break; |
2a2ab3f9 JVA |
6270 | |
6271 | case MINUS: | |
6272 | case DIV: | |
6273 | if (GET_CODE (operands[1]) == MEM) | |
e075ae69 RH |
6274 | { |
6275 | p = "r%z1\t%1"; | |
6276 | break; | |
6277 | } | |
2a2ab3f9 JVA |
6278 | |
6279 | if (GET_CODE (operands[2]) == MEM) | |
e075ae69 RH |
6280 | { |
6281 | p = "%z2\t%2"; | |
6282 | break; | |
6283 | } | |
2a2ab3f9 | 6284 | |
2a2ab3f9 | 6285 | if (find_regno_note (insn, REG_DEAD, REGNO (operands[2]))) |
6b28fd63 | 6286 | { |
e3c2afab AM |
6287 | #if SYSV386_COMPAT |
6288 | /* The SystemV/386 SVR3.2 assembler, and probably all AT&T | |
6289 | derived assemblers, confusingly reverse the direction of | |
6290 | the operation for fsub{r} and fdiv{r} when the | |
6291 | destination register is not st(0). The Intel assembler | |
6292 | doesn't have this brain damage. Read !SYSV386_COMPAT to | |
6293 | figure out what the hardware really does. */ | |
6294 | if (STACK_TOP_P (operands[0])) | |
6295 | p = "{p\t%0, %2|rp\t%2, %0}"; | |
6296 | else | |
6297 | p = "{rp\t%2, %0|p\t%0, %2}"; | |
6298 | #else | |
6b28fd63 | 6299 | if (STACK_TOP_P (operands[0])) |
e3c2afab AM |
6300 | /* As above for fmul/fadd, we can't store to st(0). */ |
6301 | p = "rp\t{%0, %2|%2, %0}"; /* st(1) = st(0) op st(1); pop */ | |
6b28fd63 | 6302 | else |
e3c2afab AM |
6303 | p = "p\t{%2, %0|%0, %2}"; /* st(r1) = st(r1) op st(0); pop */ |
6304 | #endif | |
e075ae69 | 6305 | break; |
6b28fd63 | 6306 | } |
2a2ab3f9 JVA |
6307 | |
6308 | if (find_regno_note (insn, REG_DEAD, REGNO (operands[1]))) | |
6b28fd63 | 6309 | { |
e3c2afab | 6310 | #if SYSV386_COMPAT |
6b28fd63 | 6311 | if (STACK_TOP_P (operands[0])) |
e3c2afab | 6312 | p = "{rp\t%0, %1|p\t%1, %0}"; |
6b28fd63 | 6313 | else |
e3c2afab AM |
6314 | p = "{p\t%1, %0|rp\t%0, %1}"; |
6315 | #else | |
6316 | if (STACK_TOP_P (operands[0])) | |
6317 | p = "p\t{%0, %1|%1, %0}"; /* st(1) = st(1) op st(0); pop */ | |
6318 | else | |
6319 | p = "rp\t{%1, %0|%0, %1}"; /* st(r2) = st(0) op st(r2); pop */ | |
6320 | #endif | |
e075ae69 | 6321 | break; |
6b28fd63 | 6322 | } |
2a2ab3f9 JVA |
6323 | |
6324 | if (STACK_TOP_P (operands[0])) | |
6325 | { | |
6326 | if (STACK_TOP_P (operands[1])) | |
e3c2afab | 6327 | p = "\t{%y2, %0|%0, %y2}"; /* st(0) = st(0) op st(r2) */ |
2a2ab3f9 | 6328 | else |
e3c2afab | 6329 | p = "r\t{%y1, %0|%0, %y1}"; /* st(0) = st(r1) op st(0) */ |
e075ae69 | 6330 | break; |
2a2ab3f9 JVA |
6331 | } |
6332 | else if (STACK_TOP_P (operands[1])) | |
e3c2afab AM |
6333 | { |
6334 | #if SYSV386_COMPAT | |
6335 | p = "{\t%1, %0|r\t%0, %1}"; | |
6336 | #else | |
6337 | p = "r\t{%1, %0|%0, %1}"; /* st(r2) = st(0) op st(r2) */ | |
6338 | #endif | |
6339 | } | |
2a2ab3f9 | 6340 | else |
e3c2afab AM |
6341 | { |
6342 | #if SYSV386_COMPAT | |
6343 | p = "{r\t%2, %0|\t%0, %2}"; | |
6344 | #else | |
6345 | p = "\t{%2, %0|%0, %2}"; /* st(r1) = st(r1) op st(0) */ | |
6346 | #endif | |
6347 | } | |
e075ae69 | 6348 | break; |
2a2ab3f9 JVA |
6349 | |
6350 | default: | |
6351 | abort (); | |
6352 | } | |
e075ae69 RH |
6353 | |
6354 | strcat (buf, p); | |
6355 | return buf; | |
2a2ab3f9 | 6356 | } |
e075ae69 | 6357 | |
a4f31c00 | 6358 | /* Output code to initialize control word copies used by |
7a2e09f4 JH |
6359 | trunc?f?i patterns. NORMAL is set to current control word, while ROUND_DOWN |
6360 | is set to control word rounding downwards. */ | |
6361 | void | |
6362 | emit_i387_cw_initialization (normal, round_down) | |
6363 | rtx normal, round_down; | |
6364 | { | |
6365 | rtx reg = gen_reg_rtx (HImode); | |
6366 | ||
6367 | emit_insn (gen_x86_fnstcw_1 (normal)); | |
6368 | emit_move_insn (reg, normal); | |
6369 | if (!TARGET_PARTIAL_REG_STALL && !optimize_size | |
6370 | && !TARGET_64BIT) | |
6371 | emit_insn (gen_movsi_insv_1 (reg, GEN_INT (0xc))); | |
6372 | else | |
6373 | emit_insn (gen_iorhi3 (reg, reg, GEN_INT (0xc00))); | |
6374 | emit_move_insn (round_down, reg); | |
6375 | } | |
6376 | ||
2a2ab3f9 | 6377 | /* Output code for INSN to convert a float to a signed int. OPERANDS |
46d21d2c | 6378 | are the insn operands. The output may be [HSD]Imode and the input |
e075ae69 | 6379 | operand may be [SDX]Fmode. */ |
2a2ab3f9 | 6380 | |
69ddee61 | 6381 | const char * |
2a2ab3f9 JVA |
6382 | output_fix_trunc (insn, operands) |
6383 | rtx insn; | |
6384 | rtx *operands; | |
6385 | { | |
6386 | int stack_top_dies = find_regno_note (insn, REG_DEAD, FIRST_STACK_REG) != 0; | |
e075ae69 | 6387 | int dimode_p = GET_MODE (operands[0]) == DImode; |
2a2ab3f9 | 6388 | |
e075ae69 RH |
6389 | /* Jump through a hoop or two for DImode, since the hardware has no |
6390 | non-popping instruction. We used to do this a different way, but | |
6391 | that was somewhat fragile and broke with post-reload splitters. */ | |
a05924f9 JH |
6392 | if (dimode_p && !stack_top_dies) |
6393 | output_asm_insn ("fld\t%y1", operands); | |
e075ae69 | 6394 | |
7a2e09f4 | 6395 | if (!STACK_TOP_P (operands[1])) |
10195bd8 JW |
6396 | abort (); |
6397 | ||
e075ae69 | 6398 | if (GET_CODE (operands[0]) != MEM) |
7a2e09f4 | 6399 | abort (); |
e9a25f70 | 6400 | |
7a2e09f4 | 6401 | output_asm_insn ("fldcw\t%3", operands); |
e075ae69 | 6402 | if (stack_top_dies || dimode_p) |
7a2e09f4 | 6403 | output_asm_insn ("fistp%z0\t%0", operands); |
10195bd8 | 6404 | else |
7a2e09f4 | 6405 | output_asm_insn ("fist%z0\t%0", operands); |
e075ae69 | 6406 | output_asm_insn ("fldcw\t%2", operands); |
10195bd8 | 6407 | |
e075ae69 | 6408 | return ""; |
2a2ab3f9 | 6409 | } |
cda749b1 | 6410 | |
e075ae69 RH |
6411 | /* Output code for INSN to compare OPERANDS. EFLAGS_P is 1 when fcomi |
6412 | should be used and 2 when fnstsw should be used. UNORDERED_P is true | |
6413 | when fucom should be used. */ | |
6414 | ||
69ddee61 | 6415 | const char * |
e075ae69 | 6416 | output_fp_compare (insn, operands, eflags_p, unordered_p) |
cda749b1 JW |
6417 | rtx insn; |
6418 | rtx *operands; | |
e075ae69 | 6419 | int eflags_p, unordered_p; |
cda749b1 | 6420 | { |
e075ae69 RH |
6421 | int stack_top_dies; |
6422 | rtx cmp_op0 = operands[0]; | |
6423 | rtx cmp_op1 = operands[1]; | |
0644b628 | 6424 | int is_sse = SSE_REG_P (operands[0]) | SSE_REG_P (operands[1]); |
e075ae69 RH |
6425 | |
6426 | if (eflags_p == 2) | |
6427 | { | |
6428 | cmp_op0 = cmp_op1; | |
6429 | cmp_op1 = operands[2]; | |
6430 | } | |
0644b628 JH |
6431 | if (is_sse) |
6432 | { | |
6433 | if (GET_MODE (operands[0]) == SFmode) | |
6434 | if (unordered_p) | |
6435 | return "ucomiss\t{%1, %0|%0, %1}"; | |
6436 | else | |
6437 | return "comiss\t{%1, %0|%0, %y}"; | |
6438 | else | |
6439 | if (unordered_p) | |
6440 | return "ucomisd\t{%1, %0|%0, %1}"; | |
6441 | else | |
6442 | return "comisd\t{%1, %0|%0, %y}"; | |
6443 | } | |
cda749b1 | 6444 | |
e075ae69 | 6445 | if (! STACK_TOP_P (cmp_op0)) |
cda749b1 JW |
6446 | abort (); |
6447 | ||
e075ae69 | 6448 | stack_top_dies = find_regno_note (insn, REG_DEAD, FIRST_STACK_REG) != 0; |
cda749b1 | 6449 | |
e075ae69 RH |
6450 | if (STACK_REG_P (cmp_op1) |
6451 | && stack_top_dies | |
6452 | && find_regno_note (insn, REG_DEAD, REGNO (cmp_op1)) | |
6453 | && REGNO (cmp_op1) != FIRST_STACK_REG) | |
cda749b1 | 6454 | { |
e075ae69 RH |
6455 | /* If both the top of the 387 stack dies, and the other operand |
6456 | is also a stack register that dies, then this must be a | |
6457 | `fcompp' float compare */ | |
6458 | ||
6459 | if (eflags_p == 1) | |
6460 | { | |
6461 | /* There is no double popping fcomi variant. Fortunately, | |
6462 | eflags is immune from the fstp's cc clobbering. */ | |
6463 | if (unordered_p) | |
6464 | output_asm_insn ("fucomip\t{%y1, %0|%0, %y1}", operands); | |
6465 | else | |
6466 | output_asm_insn ("fcomip\t{%y1, %0|%0, %y1}", operands); | |
6467 | return "fstp\t%y0"; | |
6468 | } | |
6469 | else | |
cda749b1 | 6470 | { |
e075ae69 RH |
6471 | if (eflags_p == 2) |
6472 | { | |
6473 | if (unordered_p) | |
6474 | return "fucompp\n\tfnstsw\t%0"; | |
6475 | else | |
6476 | return "fcompp\n\tfnstsw\t%0"; | |
6477 | } | |
cda749b1 JW |
6478 | else |
6479 | { | |
e075ae69 RH |
6480 | if (unordered_p) |
6481 | return "fucompp"; | |
6482 | else | |
6483 | return "fcompp"; | |
cda749b1 JW |
6484 | } |
6485 | } | |
cda749b1 JW |
6486 | } |
6487 | else | |
6488 | { | |
e075ae69 | 6489 | /* Encoded here as eflags_p | intmode | unordered_p | stack_top_dies. */ |
cda749b1 | 6490 | |
0f290768 | 6491 | static const char * const alt[24] = |
e075ae69 RH |
6492 | { |
6493 | "fcom%z1\t%y1", | |
6494 | "fcomp%z1\t%y1", | |
6495 | "fucom%z1\t%y1", | |
6496 | "fucomp%z1\t%y1", | |
0f290768 | 6497 | |
e075ae69 RH |
6498 | "ficom%z1\t%y1", |
6499 | "ficomp%z1\t%y1", | |
6500 | NULL, | |
6501 | NULL, | |
6502 | ||
6503 | "fcomi\t{%y1, %0|%0, %y1}", | |
6504 | "fcomip\t{%y1, %0|%0, %y1}", | |
6505 | "fucomi\t{%y1, %0|%0, %y1}", | |
6506 | "fucomip\t{%y1, %0|%0, %y1}", | |
6507 | ||
6508 | NULL, | |
6509 | NULL, | |
6510 | NULL, | |
6511 | NULL, | |
6512 | ||
6513 | "fcom%z2\t%y2\n\tfnstsw\t%0", | |
6514 | "fcomp%z2\t%y2\n\tfnstsw\t%0", | |
6515 | "fucom%z2\t%y2\n\tfnstsw\t%0", | |
6516 | "fucomp%z2\t%y2\n\tfnstsw\t%0", | |
0f290768 | 6517 | |
e075ae69 RH |
6518 | "ficom%z2\t%y2\n\tfnstsw\t%0", |
6519 | "ficomp%z2\t%y2\n\tfnstsw\t%0", | |
6520 | NULL, | |
6521 | NULL | |
6522 | }; | |
6523 | ||
6524 | int mask; | |
69ddee61 | 6525 | const char *ret; |
e075ae69 RH |
6526 | |
6527 | mask = eflags_p << 3; | |
6528 | mask |= (GET_MODE_CLASS (GET_MODE (operands[1])) == MODE_INT) << 2; | |
6529 | mask |= unordered_p << 1; | |
6530 | mask |= stack_top_dies; | |
6531 | ||
6532 | if (mask >= 24) | |
6533 | abort (); | |
6534 | ret = alt[mask]; | |
6535 | if (ret == NULL) | |
6536 | abort (); | |
cda749b1 | 6537 | |
e075ae69 | 6538 | return ret; |
cda749b1 JW |
6539 | } |
6540 | } | |
2a2ab3f9 | 6541 | |
f88c65f7 RH |
6542 | void |
6543 | ix86_output_addr_vec_elt (file, value) | |
6544 | FILE *file; | |
6545 | int value; | |
6546 | { | |
6547 | const char *directive = ASM_LONG; | |
6548 | ||
6549 | if (TARGET_64BIT) | |
6550 | { | |
6551 | #ifdef ASM_QUAD | |
6552 | directive = ASM_QUAD; | |
6553 | #else | |
6554 | abort (); | |
6555 | #endif | |
6556 | } | |
6557 | ||
6558 | fprintf (file, "%s%s%d\n", directive, LPREFIX, value); | |
6559 | } | |
6560 | ||
6561 | void | |
6562 | ix86_output_addr_diff_elt (file, value, rel) | |
6563 | FILE *file; | |
6564 | int value, rel; | |
6565 | { | |
6566 | if (TARGET_64BIT) | |
6567 | fprintf (file, "%s%s%d-.+4+(.-%s%d)\n", | |
6568 | ASM_LONG, LPREFIX, value, LPREFIX, rel); | |
6569 | else if (HAVE_AS_GOTOFF_IN_DATA) | |
6570 | fprintf (file, "%s%s%d@GOTOFF\n", ASM_LONG, LPREFIX, value); | |
6571 | else | |
6572 | asm_fprintf (file, "%s%U_GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", | |
6573 | ASM_LONG, LPREFIX, value); | |
6574 | } | |
32b5b1aa | 6575 | \f |
a8bac9ab RH |
6576 | /* Generate either "mov $0, reg" or "xor reg, reg", as appropriate |
6577 | for the target. */ | |
6578 | ||
6579 | void | |
6580 | ix86_expand_clear (dest) | |
6581 | rtx dest; | |
6582 | { | |
6583 | rtx tmp; | |
6584 | ||
6585 | /* We play register width games, which are only valid after reload. */ | |
6586 | if (!reload_completed) | |
6587 | abort (); | |
6588 | ||
6589 | /* Avoid HImode and its attendant prefix byte. */ | |
6590 | if (GET_MODE_SIZE (GET_MODE (dest)) < 4) | |
6591 | dest = gen_rtx_REG (SImode, REGNO (dest)); | |
6592 | ||
6593 | tmp = gen_rtx_SET (VOIDmode, dest, const0_rtx); | |
6594 | ||
6595 | /* This predicate should match that for movsi_xor and movdi_xor_rex64. */ | |
6596 | if (reload_completed && (!TARGET_USE_MOV0 || optimize_size)) | |
6597 | { | |
6598 | rtx clob = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, 17)); | |
6599 | tmp = gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, tmp, clob)); | |
6600 | } | |
6601 | ||
6602 | emit_insn (tmp); | |
6603 | } | |
6604 | ||
79325812 | 6605 | void |
e075ae69 RH |
6606 | ix86_expand_move (mode, operands) |
6607 | enum machine_mode mode; | |
6608 | rtx operands[]; | |
32b5b1aa | 6609 | { |
e075ae69 | 6610 | int strict = (reload_in_progress || reload_completed); |
e075ae69 | 6611 | rtx insn; |
e9a25f70 | 6612 | |
e075ae69 | 6613 | if (flag_pic && mode == Pmode && symbolic_operand (operands[1], Pmode)) |
32b5b1aa | 6614 | { |
e075ae69 | 6615 | /* Emit insns to move operands[1] into operands[0]. */ |
e9a25f70 | 6616 | |
e075ae69 RH |
6617 | if (GET_CODE (operands[0]) == MEM) |
6618 | operands[1] = force_reg (Pmode, operands[1]); | |
6619 | else | |
32b5b1aa | 6620 | { |
e075ae69 RH |
6621 | rtx temp = operands[0]; |
6622 | if (GET_CODE (temp) != REG) | |
6623 | temp = gen_reg_rtx (Pmode); | |
6624 | temp = legitimize_pic_address (operands[1], temp); | |
6625 | if (temp == operands[0]) | |
6626 | return; | |
6627 | operands[1] = temp; | |
32b5b1aa | 6628 | } |
e075ae69 RH |
6629 | } |
6630 | else | |
6631 | { | |
d7a29404 | 6632 | if (GET_CODE (operands[0]) == MEM |
44cf5b6a | 6633 | && (PUSH_ROUNDING (GET_MODE_SIZE (mode)) != GET_MODE_SIZE (mode) |
d7a29404 JH |
6634 | || !push_operand (operands[0], mode)) |
6635 | && GET_CODE (operands[1]) == MEM) | |
e075ae69 | 6636 | operands[1] = force_reg (mode, operands[1]); |
e9a25f70 | 6637 | |
2c5a510c RH |
6638 | if (push_operand (operands[0], mode) |
6639 | && ! general_no_elim_operand (operands[1], mode)) | |
6640 | operands[1] = copy_to_mode_reg (mode, operands[1]); | |
6641 | ||
44cf5b6a JH |
6642 | /* Force large constants in 64bit compilation into register |
6643 | to get them CSEed. */ | |
6644 | if (TARGET_64BIT && mode == DImode | |
6645 | && immediate_operand (operands[1], mode) | |
6646 | && !x86_64_zero_extended_value (operands[1]) | |
6647 | && !register_operand (operands[0], mode) | |
6648 | && optimize && !reload_completed && !reload_in_progress) | |
6649 | operands[1] = copy_to_mode_reg (mode, operands[1]); | |
6650 | ||
e075ae69 | 6651 | if (FLOAT_MODE_P (mode)) |
32b5b1aa | 6652 | { |
d7a29404 JH |
6653 | /* If we are loading a floating point constant to a register, |
6654 | force the value to memory now, since we'll get better code | |
6655 | out the back end. */ | |
e075ae69 RH |
6656 | |
6657 | if (strict) | |
6658 | ; | |
e075ae69 | 6659 | else if (GET_CODE (operands[1]) == CONST_DOUBLE |
d7a29404 | 6660 | && register_operand (operands[0], mode)) |
e075ae69 | 6661 | operands[1] = validize_mem (force_const_mem (mode, operands[1])); |
32b5b1aa | 6662 | } |
32b5b1aa | 6663 | } |
e9a25f70 | 6664 | |
e075ae69 | 6665 | insn = gen_rtx_SET (VOIDmode, operands[0], operands[1]); |
e9a25f70 | 6666 | |
e075ae69 RH |
6667 | emit_insn (insn); |
6668 | } | |
e9a25f70 | 6669 | |
e37af218 RH |
6670 | void |
6671 | ix86_expand_vector_move (mode, operands) | |
6672 | enum machine_mode mode; | |
6673 | rtx operands[]; | |
6674 | { | |
6675 | /* Force constants other than zero into memory. We do not know how | |
6676 | the instructions used to build constants modify the upper 64 bits | |
6677 | of the register, once we have that information we may be able | |
6678 | to handle some of them more efficiently. */ | |
6679 | if ((reload_in_progress | reload_completed) == 0 | |
6680 | && register_operand (operands[0], mode) | |
6681 | && CONSTANT_P (operands[1])) | |
6682 | { | |
6683 | rtx addr = gen_reg_rtx (Pmode); | |
6684 | emit_move_insn (addr, XEXP (force_const_mem (mode, operands[1]), 0)); | |
6685 | operands[1] = gen_rtx_MEM (mode, addr); | |
6686 | } | |
6687 | ||
6688 | /* Make operand1 a register if it isn't already. */ | |
6689 | if ((reload_in_progress | reload_completed) == 0 | |
6690 | && !register_operand (operands[0], mode) | |
6691 | && !register_operand (operands[1], mode) | |
6692 | && operands[1] != CONST0_RTX (mode)) | |
6693 | { | |
6694 | rtx temp = force_reg (TImode, operands[1]); | |
6695 | emit_move_insn (operands[0], temp); | |
6696 | return; | |
6697 | } | |
6698 | ||
6699 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], operands[1])); | |
6700 | } | |
6701 | ||
e075ae69 RH |
6702 | /* Attempt to expand a binary operator. Make the expansion closer to the |
6703 | actual machine, then just general_operand, which will allow 3 separate | |
9d81fc27 | 6704 | memory references (one output, two input) in a single insn. */ |
e9a25f70 | 6705 | |
e075ae69 RH |
6706 | void |
6707 | ix86_expand_binary_operator (code, mode, operands) | |
6708 | enum rtx_code code; | |
6709 | enum machine_mode mode; | |
6710 | rtx operands[]; | |
6711 | { | |
6712 | int matching_memory; | |
6713 | rtx src1, src2, dst, op, clob; | |
6714 | ||
6715 | dst = operands[0]; | |
6716 | src1 = operands[1]; | |
6717 | src2 = operands[2]; | |
6718 | ||
6719 | /* Recognize <var1> = <value> <op> <var1> for commutative operators */ | |
6720 | if (GET_RTX_CLASS (code) == 'c' | |
6721 | && (rtx_equal_p (dst, src2) | |
6722 | || immediate_operand (src1, mode))) | |
6723 | { | |
6724 | rtx temp = src1; | |
6725 | src1 = src2; | |
6726 | src2 = temp; | |
32b5b1aa | 6727 | } |
e9a25f70 | 6728 | |
e075ae69 RH |
6729 | /* If the destination is memory, and we do not have matching source |
6730 | operands, do things in registers. */ | |
6731 | matching_memory = 0; | |
6732 | if (GET_CODE (dst) == MEM) | |
32b5b1aa | 6733 | { |
e075ae69 RH |
6734 | if (rtx_equal_p (dst, src1)) |
6735 | matching_memory = 1; | |
6736 | else if (GET_RTX_CLASS (code) == 'c' | |
6737 | && rtx_equal_p (dst, src2)) | |
6738 | matching_memory = 2; | |
6739 | else | |
6740 | dst = gen_reg_rtx (mode); | |
6741 | } | |
0f290768 | 6742 | |
e075ae69 RH |
6743 | /* Both source operands cannot be in memory. */ |
6744 | if (GET_CODE (src1) == MEM && GET_CODE (src2) == MEM) | |
6745 | { | |
6746 | if (matching_memory != 2) | |
6747 | src2 = force_reg (mode, src2); | |
6748 | else | |
6749 | src1 = force_reg (mode, src1); | |
32b5b1aa | 6750 | } |
e9a25f70 | 6751 | |
06a964de JH |
6752 | /* If the operation is not commutable, source 1 cannot be a constant |
6753 | or non-matching memory. */ | |
0f290768 | 6754 | if ((CONSTANT_P (src1) |
06a964de JH |
6755 | || (!matching_memory && GET_CODE (src1) == MEM)) |
6756 | && GET_RTX_CLASS (code) != 'c') | |
e075ae69 | 6757 | src1 = force_reg (mode, src1); |
0f290768 | 6758 | |
e075ae69 | 6759 | /* If optimizing, copy to regs to improve CSE */ |
fe577e58 | 6760 | if (optimize && ! no_new_pseudos) |
32b5b1aa | 6761 | { |
e075ae69 RH |
6762 | if (GET_CODE (dst) == MEM) |
6763 | dst = gen_reg_rtx (mode); | |
6764 | if (GET_CODE (src1) == MEM) | |
6765 | src1 = force_reg (mode, src1); | |
6766 | if (GET_CODE (src2) == MEM) | |
6767 | src2 = force_reg (mode, src2); | |
32b5b1aa | 6768 | } |
e9a25f70 | 6769 | |
e075ae69 RH |
6770 | /* Emit the instruction. */ |
6771 | ||
6772 | op = gen_rtx_SET (VOIDmode, dst, gen_rtx_fmt_ee (code, mode, src1, src2)); | |
6773 | if (reload_in_progress) | |
6774 | { | |
6775 | /* Reload doesn't know about the flags register, and doesn't know that | |
6776 | it doesn't want to clobber it. We can only do this with PLUS. */ | |
6777 | if (code != PLUS) | |
6778 | abort (); | |
6779 | emit_insn (op); | |
6780 | } | |
6781 | else | |
32b5b1aa | 6782 | { |
e075ae69 RH |
6783 | clob = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, FLAGS_REG)); |
6784 | emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, op, clob))); | |
32b5b1aa | 6785 | } |
e9a25f70 | 6786 | |
e075ae69 RH |
6787 | /* Fix up the destination if needed. */ |
6788 | if (dst != operands[0]) | |
6789 | emit_move_insn (operands[0], dst); | |
6790 | } | |
6791 | ||
6792 | /* Return TRUE or FALSE depending on whether the binary operator meets the | |
6793 | appropriate constraints. */ | |
6794 | ||
6795 | int | |
6796 | ix86_binary_operator_ok (code, mode, operands) | |
6797 | enum rtx_code code; | |
6798 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
6799 | rtx operands[3]; | |
6800 | { | |
6801 | /* Both source operands cannot be in memory. */ | |
6802 | if (GET_CODE (operands[1]) == MEM && GET_CODE (operands[2]) == MEM) | |
6803 | return 0; | |
6804 | /* If the operation is not commutable, source 1 cannot be a constant. */ | |
6805 | if (CONSTANT_P (operands[1]) && GET_RTX_CLASS (code) != 'c') | |
6806 | return 0; | |
6807 | /* If the destination is memory, we must have a matching source operand. */ | |
6808 | if (GET_CODE (operands[0]) == MEM | |
6809 | && ! (rtx_equal_p (operands[0], operands[1]) | |
6810 | || (GET_RTX_CLASS (code) == 'c' | |
6811 | && rtx_equal_p (operands[0], operands[2])))) | |
6812 | return 0; | |
06a964de | 6813 | /* If the operation is not commutable and the source 1 is memory, we must |
d6a7951f | 6814 | have a matching destination. */ |
06a964de JH |
6815 | if (GET_CODE (operands[1]) == MEM |
6816 | && GET_RTX_CLASS (code) != 'c' | |
6817 | && ! rtx_equal_p (operands[0], operands[1])) | |
6818 | return 0; | |
e075ae69 RH |
6819 | return 1; |
6820 | } | |
6821 | ||
6822 | /* Attempt to expand a unary operator. Make the expansion closer to the | |
6823 | actual machine, then just general_operand, which will allow 2 separate | |
9d81fc27 | 6824 | memory references (one output, one input) in a single insn. */ |
e075ae69 | 6825 | |
9d81fc27 | 6826 | void |
e075ae69 RH |
6827 | ix86_expand_unary_operator (code, mode, operands) |
6828 | enum rtx_code code; | |
6829 | enum machine_mode mode; | |
6830 | rtx operands[]; | |
6831 | { | |
06a964de JH |
6832 | int matching_memory; |
6833 | rtx src, dst, op, clob; | |
6834 | ||
6835 | dst = operands[0]; | |
6836 | src = operands[1]; | |
e075ae69 | 6837 | |
06a964de JH |
6838 | /* If the destination is memory, and we do not have matching source |
6839 | operands, do things in registers. */ | |
6840 | matching_memory = 0; | |
6841 | if (GET_CODE (dst) == MEM) | |
32b5b1aa | 6842 | { |
06a964de JH |
6843 | if (rtx_equal_p (dst, src)) |
6844 | matching_memory = 1; | |
e075ae69 | 6845 | else |
06a964de | 6846 | dst = gen_reg_rtx (mode); |
32b5b1aa | 6847 | } |
e9a25f70 | 6848 | |
06a964de JH |
6849 | /* When source operand is memory, destination must match. */ |
6850 | if (!matching_memory && GET_CODE (src) == MEM) | |
6851 | src = force_reg (mode, src); | |
0f290768 | 6852 | |
06a964de | 6853 | /* If optimizing, copy to regs to improve CSE */ |
fe577e58 | 6854 | if (optimize && ! no_new_pseudos) |
06a964de JH |
6855 | { |
6856 | if (GET_CODE (dst) == MEM) | |
6857 | dst = gen_reg_rtx (mode); | |
6858 | if (GET_CODE (src) == MEM) | |
6859 | src = force_reg (mode, src); | |
6860 | } | |
6861 | ||
6862 | /* Emit the instruction. */ | |
6863 | ||
6864 | op = gen_rtx_SET (VOIDmode, dst, gen_rtx_fmt_e (code, mode, src)); | |
6865 | if (reload_in_progress || code == NOT) | |
6866 | { | |
6867 | /* Reload doesn't know about the flags register, and doesn't know that | |
6868 | it doesn't want to clobber it. */ | |
6869 | if (code != NOT) | |
6870 | abort (); | |
6871 | emit_insn (op); | |
6872 | } | |
6873 | else | |
6874 | { | |
6875 | clob = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, FLAGS_REG)); | |
6876 | emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, op, clob))); | |
6877 | } | |
6878 | ||
6879 | /* Fix up the destination if needed. */ | |
6880 | if (dst != operands[0]) | |
6881 | emit_move_insn (operands[0], dst); | |
e075ae69 RH |
6882 | } |
6883 | ||
6884 | /* Return TRUE or FALSE depending on whether the unary operator meets the | |
6885 | appropriate constraints. */ | |
6886 | ||
6887 | int | |
6888 | ix86_unary_operator_ok (code, mode, operands) | |
6889 | enum rtx_code code ATTRIBUTE_UNUSED; | |
6890 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
6891 | rtx operands[2] ATTRIBUTE_UNUSED; | |
6892 | { | |
06a964de JH |
6893 | /* If one of operands is memory, source and destination must match. */ |
6894 | if ((GET_CODE (operands[0]) == MEM | |
6895 | || GET_CODE (operands[1]) == MEM) | |
6896 | && ! rtx_equal_p (operands[0], operands[1])) | |
6897 | return FALSE; | |
e075ae69 RH |
6898 | return TRUE; |
6899 | } | |
6900 | ||
16189740 RH |
6901 | /* Return TRUE or FALSE depending on whether the first SET in INSN |
6902 | has source and destination with matching CC modes, and that the | |
6903 | CC mode is at least as constrained as REQ_MODE. */ | |
6904 | ||
6905 | int | |
6906 | ix86_match_ccmode (insn, req_mode) | |
6907 | rtx insn; | |
6908 | enum machine_mode req_mode; | |
6909 | { | |
6910 | rtx set; | |
6911 | enum machine_mode set_mode; | |
6912 | ||
6913 | set = PATTERN (insn); | |
6914 | if (GET_CODE (set) == PARALLEL) | |
6915 | set = XVECEXP (set, 0, 0); | |
6916 | if (GET_CODE (set) != SET) | |
6917 | abort (); | |
9076b9c1 JH |
6918 | if (GET_CODE (SET_SRC (set)) != COMPARE) |
6919 | abort (); | |
16189740 RH |
6920 | |
6921 | set_mode = GET_MODE (SET_DEST (set)); | |
6922 | switch (set_mode) | |
6923 | { | |
9076b9c1 JH |
6924 | case CCNOmode: |
6925 | if (req_mode != CCNOmode | |
6926 | && (req_mode != CCmode | |
6927 | || XEXP (SET_SRC (set), 1) != const0_rtx)) | |
6928 | return 0; | |
6929 | break; | |
16189740 | 6930 | case CCmode: |
9076b9c1 | 6931 | if (req_mode == CCGCmode) |
16189740 RH |
6932 | return 0; |
6933 | /* FALLTHRU */ | |
9076b9c1 JH |
6934 | case CCGCmode: |
6935 | if (req_mode == CCGOCmode || req_mode == CCNOmode) | |
6936 | return 0; | |
6937 | /* FALLTHRU */ | |
6938 | case CCGOCmode: | |
16189740 RH |
6939 | if (req_mode == CCZmode) |
6940 | return 0; | |
6941 | /* FALLTHRU */ | |
6942 | case CCZmode: | |
6943 | break; | |
6944 | ||
6945 | default: | |
6946 | abort (); | |
6947 | } | |
6948 | ||
6949 | return (GET_MODE (SET_SRC (set)) == set_mode); | |
6950 | } | |
6951 | ||
e075ae69 RH |
6952 | /* Generate insn patterns to do an integer compare of OPERANDS. */ |
6953 | ||
6954 | static rtx | |
6955 | ix86_expand_int_compare (code, op0, op1) | |
6956 | enum rtx_code code; | |
6957 | rtx op0, op1; | |
6958 | { | |
6959 | enum machine_mode cmpmode; | |
6960 | rtx tmp, flags; | |
6961 | ||
6962 | cmpmode = SELECT_CC_MODE (code, op0, op1); | |
6963 | flags = gen_rtx_REG (cmpmode, FLAGS_REG); | |
6964 | ||
6965 | /* This is very simple, but making the interface the same as in the | |
6966 | FP case makes the rest of the code easier. */ | |
6967 | tmp = gen_rtx_COMPARE (cmpmode, op0, op1); | |
6968 | emit_insn (gen_rtx_SET (VOIDmode, flags, tmp)); | |
6969 | ||
6970 | /* Return the test that should be put into the flags user, i.e. | |
6971 | the bcc, scc, or cmov instruction. */ | |
6972 | return gen_rtx_fmt_ee (code, VOIDmode, flags, const0_rtx); | |
6973 | } | |
6974 | ||
3a3677ff RH |
6975 | /* Figure out whether to use ordered or unordered fp comparisons. |
6976 | Return the appropriate mode to use. */ | |
e075ae69 | 6977 | |
b1cdafbb | 6978 | enum machine_mode |
3a3677ff | 6979 | ix86_fp_compare_mode (code) |
8752c357 | 6980 | enum rtx_code code ATTRIBUTE_UNUSED; |
e075ae69 | 6981 | { |
9e7adcb3 JH |
6982 | /* ??? In order to make all comparisons reversible, we do all comparisons |
6983 | non-trapping when compiling for IEEE. Once gcc is able to distinguish | |
6984 | all forms trapping and nontrapping comparisons, we can make inequality | |
6985 | comparisons trapping again, since it results in better code when using | |
6986 | FCOM based compares. */ | |
6987 | return TARGET_IEEE_FP ? CCFPUmode : CCFPmode; | |
3a3677ff RH |
6988 | } |
6989 | ||
9076b9c1 JH |
6990 | enum machine_mode |
6991 | ix86_cc_mode (code, op0, op1) | |
6992 | enum rtx_code code; | |
6993 | rtx op0, op1; | |
6994 | { | |
6995 | if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_FLOAT) | |
6996 | return ix86_fp_compare_mode (code); | |
6997 | switch (code) | |
6998 | { | |
6999 | /* Only zero flag is needed. */ | |
7000 | case EQ: /* ZF=0 */ | |
7001 | case NE: /* ZF!=0 */ | |
7002 | return CCZmode; | |
7003 | /* Codes needing carry flag. */ | |
265dab10 JH |
7004 | case GEU: /* CF=0 */ |
7005 | case GTU: /* CF=0 & ZF=0 */ | |
7e08e190 JH |
7006 | case LTU: /* CF=1 */ |
7007 | case LEU: /* CF=1 | ZF=1 */ | |
265dab10 | 7008 | return CCmode; |
9076b9c1 JH |
7009 | /* Codes possibly doable only with sign flag when |
7010 | comparing against zero. */ | |
7011 | case GE: /* SF=OF or SF=0 */ | |
7e08e190 | 7012 | case LT: /* SF<>OF or SF=1 */ |
9076b9c1 JH |
7013 | if (op1 == const0_rtx) |
7014 | return CCGOCmode; | |
7015 | else | |
7016 | /* For other cases Carry flag is not required. */ | |
7017 | return CCGCmode; | |
7018 | /* Codes doable only with sign flag when comparing | |
7019 | against zero, but we miss jump instruction for it | |
7020 | so we need to use relational tests agains overflow | |
7021 | that thus needs to be zero. */ | |
7022 | case GT: /* ZF=0 & SF=OF */ | |
7023 | case LE: /* ZF=1 | SF<>OF */ | |
7024 | if (op1 == const0_rtx) | |
7025 | return CCNOmode; | |
7026 | else | |
7027 | return CCGCmode; | |
7fcd7218 JH |
7028 | /* strcmp pattern do (use flags) and combine may ask us for proper |
7029 | mode. */ | |
7030 | case USE: | |
7031 | return CCmode; | |
9076b9c1 | 7032 | default: |
0f290768 | 7033 | abort (); |
9076b9c1 JH |
7034 | } |
7035 | } | |
7036 | ||
3a3677ff RH |
7037 | /* Return true if we should use an FCOMI instruction for this fp comparison. */ |
7038 | ||
a940d8bd | 7039 | int |
3a3677ff | 7040 | ix86_use_fcomi_compare (code) |
9e7adcb3 | 7041 | enum rtx_code code ATTRIBUTE_UNUSED; |
3a3677ff | 7042 | { |
9e7adcb3 JH |
7043 | enum rtx_code swapped_code = swap_condition (code); |
7044 | return ((ix86_fp_comparison_cost (code) == ix86_fp_comparison_fcomi_cost (code)) | |
7045 | || (ix86_fp_comparison_cost (swapped_code) | |
7046 | == ix86_fp_comparison_fcomi_cost (swapped_code))); | |
3a3677ff RH |
7047 | } |
7048 | ||
0f290768 | 7049 | /* Swap, force into registers, or otherwise massage the two operands |
3a3677ff RH |
7050 | to a fp comparison. The operands are updated in place; the new |
7051 | comparsion code is returned. */ | |
7052 | ||
7053 | static enum rtx_code | |
7054 | ix86_prepare_fp_compare_args (code, pop0, pop1) | |
7055 | enum rtx_code code; | |
7056 | rtx *pop0, *pop1; | |
7057 | { | |
7058 | enum machine_mode fpcmp_mode = ix86_fp_compare_mode (code); | |
7059 | rtx op0 = *pop0, op1 = *pop1; | |
7060 | enum machine_mode op_mode = GET_MODE (op0); | |
0644b628 | 7061 | int is_sse = SSE_REG_P (op0) | SSE_REG_P (op1); |
3a3677ff | 7062 | |
e075ae69 | 7063 | /* All of the unordered compare instructions only work on registers. |
3a3677ff RH |
7064 | The same is true of the XFmode compare instructions. The same is |
7065 | true of the fcomi compare instructions. */ | |
7066 | ||
0644b628 JH |
7067 | if (!is_sse |
7068 | && (fpcmp_mode == CCFPUmode | |
7069 | || op_mode == XFmode | |
7070 | || op_mode == TFmode | |
7071 | || ix86_use_fcomi_compare (code))) | |
e075ae69 | 7072 | { |
3a3677ff RH |
7073 | op0 = force_reg (op_mode, op0); |
7074 | op1 = force_reg (op_mode, op1); | |
e075ae69 RH |
7075 | } |
7076 | else | |
7077 | { | |
7078 | /* %%% We only allow op1 in memory; op0 must be st(0). So swap | |
7079 | things around if they appear profitable, otherwise force op0 | |
7080 | into a register. */ | |
7081 | ||
7082 | if (standard_80387_constant_p (op0) == 0 | |
7083 | || (GET_CODE (op0) == MEM | |
7084 | && ! (standard_80387_constant_p (op1) == 0 | |
7085 | || GET_CODE (op1) == MEM))) | |
32b5b1aa | 7086 | { |
e075ae69 RH |
7087 | rtx tmp; |
7088 | tmp = op0, op0 = op1, op1 = tmp; | |
7089 | code = swap_condition (code); | |
7090 | } | |
7091 | ||
7092 | if (GET_CODE (op0) != REG) | |
3a3677ff | 7093 | op0 = force_reg (op_mode, op0); |
e075ae69 RH |
7094 | |
7095 | if (CONSTANT_P (op1)) | |
7096 | { | |
7097 | if (standard_80387_constant_p (op1)) | |
3a3677ff | 7098 | op1 = force_reg (op_mode, op1); |
e075ae69 | 7099 | else |
3a3677ff | 7100 | op1 = validize_mem (force_const_mem (op_mode, op1)); |
32b5b1aa SC |
7101 | } |
7102 | } | |
e9a25f70 | 7103 | |
9e7adcb3 JH |
7104 | /* Try to rearrange the comparison to make it cheaper. */ |
7105 | if (ix86_fp_comparison_cost (code) | |
7106 | > ix86_fp_comparison_cost (swap_condition (code)) | |
7107 | && (GET_CODE (op0) == REG || !reload_completed)) | |
7108 | { | |
7109 | rtx tmp; | |
7110 | tmp = op0, op0 = op1, op1 = tmp; | |
7111 | code = swap_condition (code); | |
7112 | if (GET_CODE (op0) != REG) | |
7113 | op0 = force_reg (op_mode, op0); | |
7114 | } | |
7115 | ||
3a3677ff RH |
7116 | *pop0 = op0; |
7117 | *pop1 = op1; | |
7118 | return code; | |
7119 | } | |
7120 | ||
c0c102a9 JH |
7121 | /* Convert comparison codes we use to represent FP comparison to integer |
7122 | code that will result in proper branch. Return UNKNOWN if no such code | |
7123 | is available. */ | |
7124 | static enum rtx_code | |
7125 | ix86_fp_compare_code_to_integer (code) | |
7126 | enum rtx_code code; | |
7127 | { | |
7128 | switch (code) | |
7129 | { | |
7130 | case GT: | |
7131 | return GTU; | |
7132 | case GE: | |
7133 | return GEU; | |
7134 | case ORDERED: | |
7135 | case UNORDERED: | |
7136 | return code; | |
7137 | break; | |
7138 | case UNEQ: | |
7139 | return EQ; | |
7140 | break; | |
7141 | case UNLT: | |
7142 | return LTU; | |
7143 | break; | |
7144 | case UNLE: | |
7145 | return LEU; | |
7146 | break; | |
7147 | case LTGT: | |
7148 | return NE; | |
7149 | break; | |
7150 | default: | |
7151 | return UNKNOWN; | |
7152 | } | |
7153 | } | |
7154 | ||
7155 | /* Split comparison code CODE into comparisons we can do using branch | |
7156 | instructions. BYPASS_CODE is comparison code for branch that will | |
7157 | branch around FIRST_CODE and SECOND_CODE. If some of branches | |
7158 | is not required, set value to NIL. | |
7159 | We never require more than two branches. */ | |
7160 | static void | |
7161 | ix86_fp_comparison_codes (code, bypass_code, first_code, second_code) | |
7162 | enum rtx_code code, *bypass_code, *first_code, *second_code; | |
7163 | { | |
7164 | *first_code = code; | |
7165 | *bypass_code = NIL; | |
7166 | *second_code = NIL; | |
7167 | ||
7168 | /* The fcomi comparison sets flags as follows: | |
7169 | ||
7170 | cmp ZF PF CF | |
7171 | > 0 0 0 | |
7172 | < 0 0 1 | |
7173 | = 1 0 0 | |
7174 | un 1 1 1 */ | |
7175 | ||
7176 | switch (code) | |
7177 | { | |
7178 | case GT: /* GTU - CF=0 & ZF=0 */ | |
7179 | case GE: /* GEU - CF=0 */ | |
7180 | case ORDERED: /* PF=0 */ | |
7181 | case UNORDERED: /* PF=1 */ | |
7182 | case UNEQ: /* EQ - ZF=1 */ | |
7183 | case UNLT: /* LTU - CF=1 */ | |
7184 | case UNLE: /* LEU - CF=1 | ZF=1 */ | |
7185 | case LTGT: /* EQ - ZF=0 */ | |
7186 | break; | |
7187 | case LT: /* LTU - CF=1 - fails on unordered */ | |
7188 | *first_code = UNLT; | |
7189 | *bypass_code = UNORDERED; | |
7190 | break; | |
7191 | case LE: /* LEU - CF=1 | ZF=1 - fails on unordered */ | |
7192 | *first_code = UNLE; | |
7193 | *bypass_code = UNORDERED; | |
7194 | break; | |
7195 | case EQ: /* EQ - ZF=1 - fails on unordered */ | |
7196 | *first_code = UNEQ; | |
7197 | *bypass_code = UNORDERED; | |
7198 | break; | |
7199 | case NE: /* NE - ZF=0 - fails on unordered */ | |
7200 | *first_code = LTGT; | |
7201 | *second_code = UNORDERED; | |
7202 | break; | |
7203 | case UNGE: /* GEU - CF=0 - fails on unordered */ | |
7204 | *first_code = GE; | |
7205 | *second_code = UNORDERED; | |
7206 | break; | |
7207 | case UNGT: /* GTU - CF=0 & ZF=0 - fails on unordered */ | |
7208 | *first_code = GT; | |
7209 | *second_code = UNORDERED; | |
7210 | break; | |
7211 | default: | |
7212 | abort (); | |
7213 | } | |
7214 | if (!TARGET_IEEE_FP) | |
7215 | { | |
7216 | *second_code = NIL; | |
7217 | *bypass_code = NIL; | |
7218 | } | |
7219 | } | |
7220 | ||
9e7adcb3 JH |
7221 | /* Return cost of comparison done fcom + arithmetics operations on AX. |
7222 | All following functions do use number of instructions as an cost metrics. | |
7223 | In future this should be tweaked to compute bytes for optimize_size and | |
7224 | take into account performance of various instructions on various CPUs. */ | |
7225 | static int | |
7226 | ix86_fp_comparison_arithmetics_cost (code) | |
7227 | enum rtx_code code; | |
7228 | { | |
7229 | if (!TARGET_IEEE_FP) | |
7230 | return 4; | |
7231 | /* The cost of code output by ix86_expand_fp_compare. */ | |
7232 | switch (code) | |
7233 | { | |
7234 | case UNLE: | |
7235 | case UNLT: | |
7236 | case LTGT: | |
7237 | case GT: | |
7238 | case GE: | |
7239 | case UNORDERED: | |
7240 | case ORDERED: | |
7241 | case UNEQ: | |
7242 | return 4; | |
7243 | break; | |
7244 | case LT: | |
7245 | case NE: | |
7246 | case EQ: | |
7247 | case UNGE: | |
7248 | return 5; | |
7249 | break; | |
7250 | case LE: | |
7251 | case UNGT: | |
7252 | return 6; | |
7253 | break; | |
7254 | default: | |
7255 | abort (); | |
7256 | } | |
7257 | } | |
7258 | ||
7259 | /* Return cost of comparison done using fcomi operation. | |
7260 | See ix86_fp_comparison_arithmetics_cost for the metrics. */ | |
7261 | static int | |
7262 | ix86_fp_comparison_fcomi_cost (code) | |
7263 | enum rtx_code code; | |
7264 | { | |
7265 | enum rtx_code bypass_code, first_code, second_code; | |
7266 | /* Return arbitarily high cost when instruction is not supported - this | |
7267 | prevents gcc from using it. */ | |
7268 | if (!TARGET_CMOVE) | |
7269 | return 1024; | |
7270 | ix86_fp_comparison_codes (code, &bypass_code, &first_code, &second_code); | |
7271 | return (bypass_code != NIL || second_code != NIL) + 2; | |
7272 | } | |
7273 | ||
7274 | /* Return cost of comparison done using sahf operation. | |
7275 | See ix86_fp_comparison_arithmetics_cost for the metrics. */ | |
7276 | static int | |
7277 | ix86_fp_comparison_sahf_cost (code) | |
7278 | enum rtx_code code; | |
7279 | { | |
7280 | enum rtx_code bypass_code, first_code, second_code; | |
7281 | /* Return arbitarily high cost when instruction is not preferred - this | |
7282 | avoids gcc from using it. */ | |
7283 | if (!TARGET_USE_SAHF && !optimize_size) | |
7284 | return 1024; | |
7285 | ix86_fp_comparison_codes (code, &bypass_code, &first_code, &second_code); | |
7286 | return (bypass_code != NIL || second_code != NIL) + 3; | |
7287 | } | |
7288 | ||
7289 | /* Compute cost of the comparison done using any method. | |
7290 | See ix86_fp_comparison_arithmetics_cost for the metrics. */ | |
7291 | static int | |
7292 | ix86_fp_comparison_cost (code) | |
7293 | enum rtx_code code; | |
7294 | { | |
7295 | int fcomi_cost, sahf_cost, arithmetics_cost = 1024; | |
7296 | int min; | |
7297 | ||
7298 | fcomi_cost = ix86_fp_comparison_fcomi_cost (code); | |
7299 | sahf_cost = ix86_fp_comparison_sahf_cost (code); | |
7300 | ||
7301 | min = arithmetics_cost = ix86_fp_comparison_arithmetics_cost (code); | |
7302 | if (min > sahf_cost) | |
7303 | min = sahf_cost; | |
7304 | if (min > fcomi_cost) | |
7305 | min = fcomi_cost; | |
7306 | return min; | |
7307 | } | |
c0c102a9 | 7308 | |
3a3677ff RH |
7309 | /* Generate insn patterns to do a floating point compare of OPERANDS. */ |
7310 | ||
9e7adcb3 JH |
7311 | static rtx |
7312 | ix86_expand_fp_compare (code, op0, op1, scratch, second_test, bypass_test) | |
3a3677ff RH |
7313 | enum rtx_code code; |
7314 | rtx op0, op1, scratch; | |
9e7adcb3 JH |
7315 | rtx *second_test; |
7316 | rtx *bypass_test; | |
3a3677ff RH |
7317 | { |
7318 | enum machine_mode fpcmp_mode, intcmp_mode; | |
c0c102a9 | 7319 | rtx tmp, tmp2; |
9e7adcb3 | 7320 | int cost = ix86_fp_comparison_cost (code); |
c0c102a9 | 7321 | enum rtx_code bypass_code, first_code, second_code; |
3a3677ff RH |
7322 | |
7323 | fpcmp_mode = ix86_fp_compare_mode (code); | |
7324 | code = ix86_prepare_fp_compare_args (code, &op0, &op1); | |
7325 | ||
9e7adcb3 JH |
7326 | if (second_test) |
7327 | *second_test = NULL_RTX; | |
7328 | if (bypass_test) | |
7329 | *bypass_test = NULL_RTX; | |
7330 | ||
c0c102a9 JH |
7331 | ix86_fp_comparison_codes (code, &bypass_code, &first_code, &second_code); |
7332 | ||
9e7adcb3 JH |
7333 | /* Do fcomi/sahf based test when profitable. */ |
7334 | if ((bypass_code == NIL || bypass_test) | |
7335 | && (second_code == NIL || second_test) | |
7336 | && ix86_fp_comparison_arithmetics_cost (code) > cost) | |
32b5b1aa | 7337 | { |
c0c102a9 JH |
7338 | if (TARGET_CMOVE) |
7339 | { | |
7340 | tmp = gen_rtx_COMPARE (fpcmp_mode, op0, op1); | |
7341 | tmp = gen_rtx_SET (VOIDmode, gen_rtx_REG (fpcmp_mode, FLAGS_REG), | |
7342 | tmp); | |
7343 | emit_insn (tmp); | |
7344 | } | |
7345 | else | |
7346 | { | |
7347 | tmp = gen_rtx_COMPARE (fpcmp_mode, op0, op1); | |
7348 | tmp2 = gen_rtx_UNSPEC (HImode, gen_rtvec (1, tmp), 9); | |
bf71a4f8 JH |
7349 | if (!scratch) |
7350 | scratch = gen_reg_rtx (HImode); | |
c0c102a9 JH |
7351 | emit_insn (gen_rtx_SET (VOIDmode, scratch, tmp2)); |
7352 | emit_insn (gen_x86_sahf_1 (scratch)); | |
7353 | } | |
e075ae69 RH |
7354 | |
7355 | /* The FP codes work out to act like unsigned. */ | |
9a915772 | 7356 | intcmp_mode = fpcmp_mode; |
9e7adcb3 JH |
7357 | code = first_code; |
7358 | if (bypass_code != NIL) | |
7359 | *bypass_test = gen_rtx_fmt_ee (bypass_code, VOIDmode, | |
7360 | gen_rtx_REG (intcmp_mode, FLAGS_REG), | |
7361 | const0_rtx); | |
7362 | if (second_code != NIL) | |
7363 | *second_test = gen_rtx_fmt_ee (second_code, VOIDmode, | |
7364 | gen_rtx_REG (intcmp_mode, FLAGS_REG), | |
7365 | const0_rtx); | |
e075ae69 RH |
7366 | } |
7367 | else | |
7368 | { | |
7369 | /* Sadness wrt reg-stack pops killing fpsr -- gotta get fnstsw first. */ | |
e075ae69 RH |
7370 | tmp = gen_rtx_COMPARE (fpcmp_mode, op0, op1); |
7371 | tmp2 = gen_rtx_UNSPEC (HImode, gen_rtvec (1, tmp), 9); | |
bf71a4f8 JH |
7372 | if (!scratch) |
7373 | scratch = gen_reg_rtx (HImode); | |
3a3677ff | 7374 | emit_insn (gen_rtx_SET (VOIDmode, scratch, tmp2)); |
e075ae69 | 7375 | |
9a915772 JH |
7376 | /* In the unordered case, we have to check C2 for NaN's, which |
7377 | doesn't happen to work out to anything nice combination-wise. | |
7378 | So do some bit twiddling on the value we've got in AH to come | |
7379 | up with an appropriate set of condition codes. */ | |
e075ae69 | 7380 | |
9a915772 JH |
7381 | intcmp_mode = CCNOmode; |
7382 | switch (code) | |
32b5b1aa | 7383 | { |
9a915772 JH |
7384 | case GT: |
7385 | case UNGT: | |
7386 | if (code == GT || !TARGET_IEEE_FP) | |
32b5b1aa | 7387 | { |
3a3677ff | 7388 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x45))); |
e075ae69 | 7389 | code = EQ; |
9a915772 JH |
7390 | } |
7391 | else | |
7392 | { | |
7393 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); | |
7394 | emit_insn (gen_addqi_ext_1 (scratch, scratch, constm1_rtx)); | |
7395 | emit_insn (gen_cmpqi_ext_3 (scratch, GEN_INT (0x44))); | |
7396 | intcmp_mode = CCmode; | |
7397 | code = GEU; | |
7398 | } | |
7399 | break; | |
7400 | case LT: | |
7401 | case UNLT: | |
7402 | if (code == LT && TARGET_IEEE_FP) | |
7403 | { | |
3a3677ff RH |
7404 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); |
7405 | emit_insn (gen_cmpqi_ext_3 (scratch, GEN_INT (0x01))); | |
e075ae69 RH |
7406 | intcmp_mode = CCmode; |
7407 | code = EQ; | |
9a915772 JH |
7408 | } |
7409 | else | |
7410 | { | |
7411 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x01))); | |
7412 | code = NE; | |
7413 | } | |
7414 | break; | |
7415 | case GE: | |
7416 | case UNGE: | |
7417 | if (code == GE || !TARGET_IEEE_FP) | |
7418 | { | |
3a3677ff | 7419 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x05))); |
e075ae69 | 7420 | code = EQ; |
9a915772 JH |
7421 | } |
7422 | else | |
7423 | { | |
7424 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); | |
7425 | emit_insn (gen_xorqi_cc_ext_1 (scratch, scratch, | |
7426 | GEN_INT (0x01))); | |
7427 | code = NE; | |
7428 | } | |
7429 | break; | |
7430 | case LE: | |
7431 | case UNLE: | |
7432 | if (code == LE && TARGET_IEEE_FP) | |
7433 | { | |
3a3677ff RH |
7434 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); |
7435 | emit_insn (gen_addqi_ext_1 (scratch, scratch, constm1_rtx)); | |
7436 | emit_insn (gen_cmpqi_ext_3 (scratch, GEN_INT (0x40))); | |
e075ae69 RH |
7437 | intcmp_mode = CCmode; |
7438 | code = LTU; | |
9a915772 JH |
7439 | } |
7440 | else | |
7441 | { | |
7442 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x45))); | |
7443 | code = NE; | |
7444 | } | |
7445 | break; | |
7446 | case EQ: | |
7447 | case UNEQ: | |
7448 | if (code == EQ && TARGET_IEEE_FP) | |
7449 | { | |
3a3677ff RH |
7450 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); |
7451 | emit_insn (gen_cmpqi_ext_3 (scratch, GEN_INT (0x40))); | |
e075ae69 RH |
7452 | intcmp_mode = CCmode; |
7453 | code = EQ; | |
9a915772 JH |
7454 | } |
7455 | else | |
7456 | { | |
3a3677ff RH |
7457 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x40))); |
7458 | code = NE; | |
7459 | break; | |
9a915772 JH |
7460 | } |
7461 | break; | |
7462 | case NE: | |
7463 | case LTGT: | |
7464 | if (code == NE && TARGET_IEEE_FP) | |
7465 | { | |
3a3677ff | 7466 | emit_insn (gen_andqi_ext_0 (scratch, scratch, GEN_INT (0x45))); |
9a915772 JH |
7467 | emit_insn (gen_xorqi_cc_ext_1 (scratch, scratch, |
7468 | GEN_INT (0x40))); | |
3a3677ff | 7469 | code = NE; |
9a915772 JH |
7470 | } |
7471 | else | |
7472 | { | |
3a3677ff RH |
7473 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x40))); |
7474 | code = EQ; | |
32b5b1aa | 7475 | } |
9a915772 JH |
7476 | break; |
7477 | ||
7478 | case UNORDERED: | |
7479 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x04))); | |
7480 | code = NE; | |
7481 | break; | |
7482 | case ORDERED: | |
7483 | emit_insn (gen_testqi_ext_ccno_0 (scratch, GEN_INT (0x04))); | |
7484 | code = EQ; | |
7485 | break; | |
7486 | ||
7487 | default: | |
7488 | abort (); | |
32b5b1aa | 7489 | } |
32b5b1aa | 7490 | } |
e075ae69 RH |
7491 | |
7492 | /* Return the test that should be put into the flags user, i.e. | |
7493 | the bcc, scc, or cmov instruction. */ | |
7494 | return gen_rtx_fmt_ee (code, VOIDmode, | |
7495 | gen_rtx_REG (intcmp_mode, FLAGS_REG), | |
7496 | const0_rtx); | |
7497 | } | |
7498 | ||
9e3e266c | 7499 | rtx |
a1b8572c | 7500 | ix86_expand_compare (code, second_test, bypass_test) |
e075ae69 | 7501 | enum rtx_code code; |
a1b8572c | 7502 | rtx *second_test, *bypass_test; |
e075ae69 RH |
7503 | { |
7504 | rtx op0, op1, ret; | |
7505 | op0 = ix86_compare_op0; | |
7506 | op1 = ix86_compare_op1; | |
7507 | ||
a1b8572c JH |
7508 | if (second_test) |
7509 | *second_test = NULL_RTX; | |
7510 | if (bypass_test) | |
7511 | *bypass_test = NULL_RTX; | |
7512 | ||
e075ae69 | 7513 | if (GET_MODE_CLASS (GET_MODE (op0)) == MODE_FLOAT) |
bf71a4f8 | 7514 | ret = ix86_expand_fp_compare (code, op0, op1, NULL_RTX, |
77ebd435 | 7515 | second_test, bypass_test); |
32b5b1aa | 7516 | else |
e075ae69 RH |
7517 | ret = ix86_expand_int_compare (code, op0, op1); |
7518 | ||
7519 | return ret; | |
7520 | } | |
7521 | ||
03598dea JH |
7522 | /* Return true if the CODE will result in nontrivial jump sequence. */ |
7523 | bool | |
7524 | ix86_fp_jump_nontrivial_p (code) | |
7525 | enum rtx_code code; | |
7526 | { | |
7527 | enum rtx_code bypass_code, first_code, second_code; | |
7528 | if (!TARGET_CMOVE) | |
7529 | return true; | |
7530 | ix86_fp_comparison_codes (code, &bypass_code, &first_code, &second_code); | |
7531 | return bypass_code != NIL || second_code != NIL; | |
7532 | } | |
7533 | ||
e075ae69 | 7534 | void |
3a3677ff | 7535 | ix86_expand_branch (code, label) |
e075ae69 | 7536 | enum rtx_code code; |
e075ae69 RH |
7537 | rtx label; |
7538 | { | |
3a3677ff | 7539 | rtx tmp; |
e075ae69 | 7540 | |
3a3677ff | 7541 | switch (GET_MODE (ix86_compare_op0)) |
32b5b1aa | 7542 | { |
3a3677ff RH |
7543 | case QImode: |
7544 | case HImode: | |
7545 | case SImode: | |
0d7d98ee | 7546 | simple: |
a1b8572c | 7547 | tmp = ix86_expand_compare (code, NULL, NULL); |
e075ae69 RH |
7548 | tmp = gen_rtx_IF_THEN_ELSE (VOIDmode, tmp, |
7549 | gen_rtx_LABEL_REF (VOIDmode, label), | |
7550 | pc_rtx); | |
7551 | emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx, tmp)); | |
32b5b1aa | 7552 | return; |
e075ae69 | 7553 | |
3a3677ff RH |
7554 | case SFmode: |
7555 | case DFmode: | |
0f290768 | 7556 | case XFmode: |
2b589241 | 7557 | case TFmode: |
3a3677ff RH |
7558 | { |
7559 | rtvec vec; | |
7560 | int use_fcomi; | |
03598dea | 7561 | enum rtx_code bypass_code, first_code, second_code; |
3a3677ff RH |
7562 | |
7563 | code = ix86_prepare_fp_compare_args (code, &ix86_compare_op0, | |
7564 | &ix86_compare_op1); | |
03598dea JH |
7565 | |
7566 | ix86_fp_comparison_codes (code, &bypass_code, &first_code, &second_code); | |
7567 | ||
7568 | /* Check whether we will use the natural sequence with one jump. If | |
7569 | so, we can expand jump early. Otherwise delay expansion by | |
7570 | creating compound insn to not confuse optimizers. */ | |
7571 | if (bypass_code == NIL && second_code == NIL | |
7572 | && TARGET_CMOVE) | |
7573 | { | |
7574 | ix86_split_fp_branch (code, ix86_compare_op0, ix86_compare_op1, | |
7575 | gen_rtx_LABEL_REF (VOIDmode, label), | |
7576 | pc_rtx, NULL_RTX); | |
7577 | } | |
7578 | else | |
7579 | { | |
7580 | tmp = gen_rtx_fmt_ee (code, VOIDmode, | |
7581 | ix86_compare_op0, ix86_compare_op1); | |
7582 | tmp = gen_rtx_IF_THEN_ELSE (VOIDmode, tmp, | |
7583 | gen_rtx_LABEL_REF (VOIDmode, label), | |
7584 | pc_rtx); | |
7585 | tmp = gen_rtx_SET (VOIDmode, pc_rtx, tmp); | |
7586 | ||
7587 | use_fcomi = ix86_use_fcomi_compare (code); | |
7588 | vec = rtvec_alloc (3 + !use_fcomi); | |
7589 | RTVEC_ELT (vec, 0) = tmp; | |
7590 | RTVEC_ELT (vec, 1) | |
7591 | = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCFPmode, 18)); | |
7592 | RTVEC_ELT (vec, 2) | |
7593 | = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCFPmode, 17)); | |
7594 | if (! use_fcomi) | |
7595 | RTVEC_ELT (vec, 3) | |
7596 | = gen_rtx_CLOBBER (VOIDmode, gen_rtx_SCRATCH (HImode)); | |
7597 | ||
7598 | emit_jump_insn (gen_rtx_PARALLEL (VOIDmode, vec)); | |
7599 | } | |
3a3677ff RH |
7600 | return; |
7601 | } | |
32b5b1aa | 7602 | |
3a3677ff | 7603 | case DImode: |
0d7d98ee JH |
7604 | if (TARGET_64BIT) |
7605 | goto simple; | |
3a3677ff RH |
7606 | /* Expand DImode branch into multiple compare+branch. */ |
7607 | { | |
7608 | rtx lo[2], hi[2], label2; | |
7609 | enum rtx_code code1, code2, code3; | |
32b5b1aa | 7610 | |
3a3677ff RH |
7611 | if (CONSTANT_P (ix86_compare_op0) && ! CONSTANT_P (ix86_compare_op1)) |
7612 | { | |
7613 | tmp = ix86_compare_op0; | |
7614 | ix86_compare_op0 = ix86_compare_op1; | |
7615 | ix86_compare_op1 = tmp; | |
7616 | code = swap_condition (code); | |
7617 | } | |
7618 | split_di (&ix86_compare_op0, 1, lo+0, hi+0); | |
7619 | split_di (&ix86_compare_op1, 1, lo+1, hi+1); | |
32b5b1aa | 7620 | |
3a3677ff RH |
7621 | /* When comparing for equality, we can use (hi0^hi1)|(lo0^lo1) to |
7622 | avoid two branches. This costs one extra insn, so disable when | |
7623 | optimizing for size. */ | |
32b5b1aa | 7624 | |
3a3677ff RH |
7625 | if ((code == EQ || code == NE) |
7626 | && (!optimize_size | |
7627 | || hi[1] == const0_rtx || lo[1] == const0_rtx)) | |
7628 | { | |
7629 | rtx xor0, xor1; | |
32b5b1aa | 7630 | |
3a3677ff RH |
7631 | xor1 = hi[0]; |
7632 | if (hi[1] != const0_rtx) | |
7633 | xor1 = expand_binop (SImode, xor_optab, xor1, hi[1], | |
7634 | NULL_RTX, 0, OPTAB_WIDEN); | |
32b5b1aa | 7635 | |
3a3677ff RH |
7636 | xor0 = lo[0]; |
7637 | if (lo[1] != const0_rtx) | |
7638 | xor0 = expand_binop (SImode, xor_optab, xor0, lo[1], | |
7639 | NULL_RTX, 0, OPTAB_WIDEN); | |
e075ae69 | 7640 | |
3a3677ff RH |
7641 | tmp = expand_binop (SImode, ior_optab, xor1, xor0, |
7642 | NULL_RTX, 0, OPTAB_WIDEN); | |
32b5b1aa | 7643 | |
3a3677ff RH |
7644 | ix86_compare_op0 = tmp; |
7645 | ix86_compare_op1 = const0_rtx; | |
7646 | ix86_expand_branch (code, label); | |
7647 | return; | |
7648 | } | |
e075ae69 | 7649 | |
1f9124e4 JJ |
7650 | /* Otherwise, if we are doing less-than or greater-or-equal-than, |
7651 | op1 is a constant and the low word is zero, then we can just | |
7652 | examine the high word. */ | |
32b5b1aa | 7653 | |
1f9124e4 JJ |
7654 | if (GET_CODE (hi[1]) == CONST_INT && lo[1] == const0_rtx) |
7655 | switch (code) | |
7656 | { | |
7657 | case LT: case LTU: case GE: case GEU: | |
7658 | ix86_compare_op0 = hi[0]; | |
7659 | ix86_compare_op1 = hi[1]; | |
7660 | ix86_expand_branch (code, label); | |
7661 | return; | |
7662 | default: | |
7663 | break; | |
7664 | } | |
e075ae69 | 7665 | |
3a3677ff | 7666 | /* Otherwise, we need two or three jumps. */ |
e075ae69 | 7667 | |
3a3677ff | 7668 | label2 = gen_label_rtx (); |
e075ae69 | 7669 | |
3a3677ff RH |
7670 | code1 = code; |
7671 | code2 = swap_condition (code); | |
7672 | code3 = unsigned_condition (code); | |
e075ae69 | 7673 | |
3a3677ff RH |
7674 | switch (code) |
7675 | { | |
7676 | case LT: case GT: case LTU: case GTU: | |
7677 | break; | |
e075ae69 | 7678 | |
3a3677ff RH |
7679 | case LE: code1 = LT; code2 = GT; break; |
7680 | case GE: code1 = GT; code2 = LT; break; | |
7681 | case LEU: code1 = LTU; code2 = GTU; break; | |
7682 | case GEU: code1 = GTU; code2 = LTU; break; | |
e075ae69 | 7683 | |
3a3677ff RH |
7684 | case EQ: code1 = NIL; code2 = NE; break; |
7685 | case NE: code2 = NIL; break; | |
e075ae69 | 7686 | |
3a3677ff RH |
7687 | default: |
7688 | abort (); | |
7689 | } | |
e075ae69 | 7690 | |
3a3677ff RH |
7691 | /* |
7692 | * a < b => | |
7693 | * if (hi(a) < hi(b)) goto true; | |
7694 | * if (hi(a) > hi(b)) goto false; | |
7695 | * if (lo(a) < lo(b)) goto true; | |
7696 | * false: | |
7697 | */ | |
7698 | ||
7699 | ix86_compare_op0 = hi[0]; | |
7700 | ix86_compare_op1 = hi[1]; | |
7701 | ||
7702 | if (code1 != NIL) | |
7703 | ix86_expand_branch (code1, label); | |
7704 | if (code2 != NIL) | |
7705 | ix86_expand_branch (code2, label2); | |
7706 | ||
7707 | ix86_compare_op0 = lo[0]; | |
7708 | ix86_compare_op1 = lo[1]; | |
7709 | ix86_expand_branch (code3, label); | |
7710 | ||
7711 | if (code2 != NIL) | |
7712 | emit_label (label2); | |
7713 | return; | |
7714 | } | |
e075ae69 | 7715 | |
3a3677ff RH |
7716 | default: |
7717 | abort (); | |
7718 | } | |
32b5b1aa | 7719 | } |
e075ae69 | 7720 | |
9e7adcb3 JH |
7721 | /* Split branch based on floating point condition. */ |
7722 | void | |
03598dea JH |
7723 | ix86_split_fp_branch (code, op1, op2, target1, target2, tmp) |
7724 | enum rtx_code code; | |
7725 | rtx op1, op2, target1, target2, tmp; | |
9e7adcb3 JH |
7726 | { |
7727 | rtx second, bypass; | |
7728 | rtx label = NULL_RTX; | |
03598dea | 7729 | rtx condition; |
6b24c259 JH |
7730 | int bypass_probability = -1, second_probability = -1, probability = -1; |
7731 | rtx i; | |
9e7adcb3 JH |
7732 | |
7733 | if (target2 != pc_rtx) | |
7734 | { | |
7735 | rtx tmp = target2; | |
7736 | code = reverse_condition_maybe_unordered (code); | |
7737 | target2 = target1; | |
7738 | target1 = tmp; | |
7739 | } | |
7740 | ||
7741 | condition = ix86_expand_fp_compare (code, op1, op2, | |
7742 | tmp, &second, &bypass); | |
6b24c259 JH |
7743 | |
7744 | if (split_branch_probability >= 0) | |
7745 | { | |
7746 | /* Distribute the probabilities across the jumps. | |
7747 | Assume the BYPASS and SECOND to be always test | |
7748 | for UNORDERED. */ | |
7749 | probability = split_branch_probability; | |
7750 | ||
d6a7951f | 7751 | /* Value of 1 is low enough to make no need for probability |
6b24c259 JH |
7752 | to be updated. Later we may run some experiments and see |
7753 | if unordered values are more frequent in practice. */ | |
7754 | if (bypass) | |
7755 | bypass_probability = 1; | |
7756 | if (second) | |
7757 | second_probability = 1; | |
7758 | } | |
9e7adcb3 JH |
7759 | if (bypass != NULL_RTX) |
7760 | { | |
7761 | label = gen_label_rtx (); | |
6b24c259 JH |
7762 | i = emit_jump_insn (gen_rtx_SET |
7763 | (VOIDmode, pc_rtx, | |
7764 | gen_rtx_IF_THEN_ELSE (VOIDmode, | |
7765 | bypass, | |
7766 | gen_rtx_LABEL_REF (VOIDmode, | |
7767 | label), | |
7768 | pc_rtx))); | |
7769 | if (bypass_probability >= 0) | |
7770 | REG_NOTES (i) | |
7771 | = gen_rtx_EXPR_LIST (REG_BR_PROB, | |
7772 | GEN_INT (bypass_probability), | |
7773 | REG_NOTES (i)); | |
7774 | } | |
7775 | i = emit_jump_insn (gen_rtx_SET | |
9e7adcb3 JH |
7776 | (VOIDmode, pc_rtx, |
7777 | gen_rtx_IF_THEN_ELSE (VOIDmode, | |
6b24c259 JH |
7778 | condition, target1, target2))); |
7779 | if (probability >= 0) | |
7780 | REG_NOTES (i) | |
7781 | = gen_rtx_EXPR_LIST (REG_BR_PROB, | |
7782 | GEN_INT (probability), | |
7783 | REG_NOTES (i)); | |
7784 | if (second != NULL_RTX) | |
9e7adcb3 | 7785 | { |
6b24c259 JH |
7786 | i = emit_jump_insn (gen_rtx_SET |
7787 | (VOIDmode, pc_rtx, | |
7788 | gen_rtx_IF_THEN_ELSE (VOIDmode, second, target1, | |
7789 | target2))); | |
7790 | if (second_probability >= 0) | |
7791 | REG_NOTES (i) | |
7792 | = gen_rtx_EXPR_LIST (REG_BR_PROB, | |
7793 | GEN_INT (second_probability), | |
7794 | REG_NOTES (i)); | |
9e7adcb3 | 7795 | } |
9e7adcb3 JH |
7796 | if (label != NULL_RTX) |
7797 | emit_label (label); | |
7798 | } | |
7799 | ||
32b5b1aa | 7800 | int |
3a3677ff | 7801 | ix86_expand_setcc (code, dest) |
e075ae69 | 7802 | enum rtx_code code; |
e075ae69 | 7803 | rtx dest; |
32b5b1aa | 7804 | { |
a1b8572c JH |
7805 | rtx ret, tmp, tmpreg; |
7806 | rtx second_test, bypass_test; | |
e075ae69 | 7807 | |
885a70fd JH |
7808 | if (GET_MODE (ix86_compare_op0) == DImode |
7809 | && !TARGET_64BIT) | |
e075ae69 RH |
7810 | return 0; /* FAIL */ |
7811 | ||
b932f770 JH |
7812 | if (GET_MODE (dest) != QImode) |
7813 | abort (); | |
e075ae69 | 7814 | |
a1b8572c | 7815 | ret = ix86_expand_compare (code, &second_test, &bypass_test); |
e075ae69 RH |
7816 | PUT_MODE (ret, QImode); |
7817 | ||
7818 | tmp = dest; | |
a1b8572c | 7819 | tmpreg = dest; |
32b5b1aa | 7820 | |
e075ae69 | 7821 | emit_insn (gen_rtx_SET (VOIDmode, tmp, ret)); |
a1b8572c JH |
7822 | if (bypass_test || second_test) |
7823 | { | |
7824 | rtx test = second_test; | |
7825 | int bypass = 0; | |
7826 | rtx tmp2 = gen_reg_rtx (QImode); | |
7827 | if (bypass_test) | |
7828 | { | |
7829 | if (second_test) | |
7830 | abort(); | |
7831 | test = bypass_test; | |
7832 | bypass = 1; | |
7833 | PUT_CODE (test, reverse_condition_maybe_unordered (GET_CODE (test))); | |
7834 | } | |
7835 | PUT_MODE (test, QImode); | |
7836 | emit_insn (gen_rtx_SET (VOIDmode, tmp2, test)); | |
7837 | ||
7838 | if (bypass) | |
7839 | emit_insn (gen_andqi3 (tmp, tmpreg, tmp2)); | |
7840 | else | |
7841 | emit_insn (gen_iorqi3 (tmp, tmpreg, tmp2)); | |
7842 | } | |
e075ae69 | 7843 | |
e075ae69 | 7844 | return 1; /* DONE */ |
32b5b1aa | 7845 | } |
e075ae69 | 7846 | |
32b5b1aa | 7847 | int |
e075ae69 RH |
7848 | ix86_expand_int_movcc (operands) |
7849 | rtx operands[]; | |
32b5b1aa | 7850 | { |
e075ae69 RH |
7851 | enum rtx_code code = GET_CODE (operands[1]), compare_code; |
7852 | rtx compare_seq, compare_op; | |
a1b8572c | 7853 | rtx second_test, bypass_test; |
635559ab | 7854 | enum machine_mode mode = GET_MODE (operands[0]); |
32b5b1aa | 7855 | |
36583fea JH |
7856 | /* When the compare code is not LTU or GEU, we can not use sbbl case. |
7857 | In case comparsion is done with immediate, we can convert it to LTU or | |
7858 | GEU by altering the integer. */ | |
7859 | ||
7860 | if ((code == LEU || code == GTU) | |
7861 | && GET_CODE (ix86_compare_op1) == CONST_INT | |
635559ab | 7862 | && mode != HImode |
36583fea | 7863 | && (unsigned int)INTVAL (ix86_compare_op1) != 0xffffffff |
0f290768 | 7864 | && GET_CODE (operands[2]) == CONST_INT |
36583fea JH |
7865 | && GET_CODE (operands[3]) == CONST_INT) |
7866 | { | |
7867 | if (code == LEU) | |
7868 | code = LTU; | |
7869 | else | |
7870 | code = GEU; | |
7871 | ix86_compare_op1 = GEN_INT (INTVAL (ix86_compare_op1) + 1); | |
7872 | } | |
3a3677ff | 7873 | |
e075ae69 | 7874 | start_sequence (); |
a1b8572c | 7875 | compare_op = ix86_expand_compare (code, &second_test, &bypass_test); |
e075ae69 RH |
7876 | compare_seq = gen_sequence (); |
7877 | end_sequence (); | |
7878 | ||
7879 | compare_code = GET_CODE (compare_op); | |
7880 | ||
7881 | /* Don't attempt mode expansion here -- if we had to expand 5 or 6 | |
7882 | HImode insns, we'd be swallowed in word prefix ops. */ | |
7883 | ||
635559ab JH |
7884 | if (mode != HImode |
7885 | && (mode != DImode || TARGET_64BIT) | |
0f290768 | 7886 | && GET_CODE (operands[2]) == CONST_INT |
e075ae69 RH |
7887 | && GET_CODE (operands[3]) == CONST_INT) |
7888 | { | |
7889 | rtx out = operands[0]; | |
7890 | HOST_WIDE_INT ct = INTVAL (operands[2]); | |
7891 | HOST_WIDE_INT cf = INTVAL (operands[3]); | |
7892 | HOST_WIDE_INT diff; | |
7893 | ||
a1b8572c JH |
7894 | if ((compare_code == LTU || compare_code == GEU) |
7895 | && !second_test && !bypass_test) | |
e075ae69 | 7896 | { |
e075ae69 RH |
7897 | |
7898 | /* Detect overlap between destination and compare sources. */ | |
7899 | rtx tmp = out; | |
7900 | ||
0f290768 | 7901 | /* To simplify rest of code, restrict to the GEU case. */ |
36583fea JH |
7902 | if (compare_code == LTU) |
7903 | { | |
7904 | int tmp = ct; | |
7905 | ct = cf; | |
7906 | cf = tmp; | |
7907 | compare_code = reverse_condition (compare_code); | |
7908 | code = reverse_condition (code); | |
7909 | } | |
7910 | diff = ct - cf; | |
7911 | ||
e075ae69 | 7912 | if (reg_overlap_mentioned_p (out, ix86_compare_op0) |
a500c31b | 7913 | || reg_overlap_mentioned_p (out, ix86_compare_op1)) |
635559ab | 7914 | tmp = gen_reg_rtx (mode); |
e075ae69 RH |
7915 | |
7916 | emit_insn (compare_seq); | |
635559ab | 7917 | if (mode == DImode) |
14f73b5a JH |
7918 | emit_insn (gen_x86_movdicc_0_m1_rex64 (tmp)); |
7919 | else | |
7920 | emit_insn (gen_x86_movsicc_0_m1 (tmp)); | |
e075ae69 | 7921 | |
36583fea JH |
7922 | if (diff == 1) |
7923 | { | |
7924 | /* | |
7925 | * cmpl op0,op1 | |
7926 | * sbbl dest,dest | |
7927 | * [addl dest, ct] | |
7928 | * | |
7929 | * Size 5 - 8. | |
7930 | */ | |
7931 | if (ct) | |
635559ab JH |
7932 | tmp = expand_simple_binop (mode, PLUS, |
7933 | tmp, GEN_INT (ct), | |
7934 | tmp, 1, OPTAB_DIRECT); | |
36583fea JH |
7935 | } |
7936 | else if (cf == -1) | |
7937 | { | |
7938 | /* | |
7939 | * cmpl op0,op1 | |
7940 | * sbbl dest,dest | |
7941 | * orl $ct, dest | |
7942 | * | |
7943 | * Size 8. | |
7944 | */ | |
635559ab JH |
7945 | tmp = expand_simple_binop (mode, IOR, |
7946 | tmp, GEN_INT (ct), | |
7947 | tmp, 1, OPTAB_DIRECT); | |
36583fea JH |
7948 | } |
7949 | else if (diff == -1 && ct) | |
7950 | { | |
7951 | /* | |
7952 | * cmpl op0,op1 | |
7953 | * sbbl dest,dest | |
7954 | * xorl $-1, dest | |
7955 | * [addl dest, cf] | |
7956 | * | |
7957 | * Size 8 - 11. | |
7958 | */ | |
635559ab JH |
7959 | tmp = expand_simple_unop (mode, NOT, tmp, tmp, 1); |
7960 | if (cf) | |
7961 | tmp = expand_simple_binop (mode, PLUS, | |
7962 | tmp, GEN_INT (cf), | |
7963 | tmp, 1, OPTAB_DIRECT); | |
36583fea JH |
7964 | } |
7965 | else | |
7966 | { | |
7967 | /* | |
7968 | * cmpl op0,op1 | |
7969 | * sbbl dest,dest | |
7970 | * andl cf - ct, dest | |
7971 | * [addl dest, ct] | |
7972 | * | |
7973 | * Size 8 - 11. | |
7974 | */ | |
635559ab JH |
7975 | tmp = expand_simple_binop (mode, AND, |
7976 | tmp, | |
7977 | GEN_INT (trunc_int_for_mode | |
7978 | (cf - ct, mode)), | |
7979 | tmp, 1, OPTAB_DIRECT); | |
7980 | if (ct) | |
7981 | tmp = expand_simple_binop (mode, PLUS, | |
7982 | tmp, GEN_INT (ct), | |
7983 | tmp, 1, OPTAB_DIRECT); | |
36583fea | 7984 | } |
e075ae69 RH |
7985 | |
7986 | if (tmp != out) | |
7987 | emit_move_insn (out, tmp); | |
7988 | ||
7989 | return 1; /* DONE */ | |
7990 | } | |
7991 | ||
7992 | diff = ct - cf; | |
7993 | if (diff < 0) | |
7994 | { | |
7995 | HOST_WIDE_INT tmp; | |
7996 | tmp = ct, ct = cf, cf = tmp; | |
7997 | diff = -diff; | |
734dba19 JH |
7998 | if (FLOAT_MODE_P (GET_MODE (ix86_compare_op0))) |
7999 | { | |
8000 | /* We may be reversing unordered compare to normal compare, that | |
8001 | is not valid in general (we may convert non-trapping condition | |
8002 | to trapping one), however on i386 we currently emit all | |
8003 | comparisons unordered. */ | |
8004 | compare_code = reverse_condition_maybe_unordered (compare_code); | |
8005 | code = reverse_condition_maybe_unordered (code); | |
8006 | } | |
8007 | else | |
8008 | { | |
8009 | compare_code = reverse_condition (compare_code); | |
8010 | code = reverse_condition (code); | |
8011 | } | |
e075ae69 | 8012 | } |
635559ab JH |
8013 | if ((diff == 1 || diff == 2 || diff == 4 || diff == 8 |
8014 | || diff == 3 || diff == 5 || diff == 9) | |
8015 | && (mode != DImode || x86_64_sign_extended_value (GEN_INT (cf)))) | |
e075ae69 RH |
8016 | { |
8017 | /* | |
8018 | * xorl dest,dest | |
8019 | * cmpl op1,op2 | |
8020 | * setcc dest | |
8021 | * lea cf(dest*(ct-cf)),dest | |
8022 | * | |
8023 | * Size 14. | |
8024 | * | |
8025 | * This also catches the degenerate setcc-only case. | |
8026 | */ | |
8027 | ||
8028 | rtx tmp; | |
8029 | int nops; | |
8030 | ||
8031 | out = emit_store_flag (out, code, ix86_compare_op0, | |
8032 | ix86_compare_op1, VOIDmode, 0, 1); | |
8033 | ||
8034 | nops = 0; | |
885a70fd JH |
8035 | /* On x86_64 the lea instruction operates on Pmode, so we need to get arithmetics |
8036 | done in proper mode to match. */ | |
e075ae69 | 8037 | if (diff == 1) |
14f73b5a | 8038 | tmp = out; |
e075ae69 RH |
8039 | else |
8040 | { | |
885a70fd | 8041 | rtx out1; |
14f73b5a | 8042 | out1 = out; |
635559ab | 8043 | tmp = gen_rtx_MULT (mode, out1, GEN_INT (diff & ~1)); |
e075ae69 RH |
8044 | nops++; |
8045 | if (diff & 1) | |
8046 | { | |
635559ab | 8047 | tmp = gen_rtx_PLUS (mode, tmp, out1); |
e075ae69 RH |
8048 | nops++; |
8049 | } | |
8050 | } | |
8051 | if (cf != 0) | |
8052 | { | |
635559ab | 8053 | tmp = gen_rtx_PLUS (mode, tmp, GEN_INT (cf)); |
e075ae69 RH |
8054 | nops++; |
8055 | } | |
885a70fd JH |
8056 | if (tmp != out |
8057 | && (GET_CODE (tmp) != SUBREG || SUBREG_REG (tmp) != out)) | |
e075ae69 | 8058 | { |
14f73b5a | 8059 | if (nops == 1) |
e075ae69 RH |
8060 | { |
8061 | rtx clob; | |
8062 | ||
8063 | clob = gen_rtx_REG (CCmode, FLAGS_REG); | |
8064 | clob = gen_rtx_CLOBBER (VOIDmode, clob); | |
8065 | ||
8066 | tmp = gen_rtx_SET (VOIDmode, out, tmp); | |
8067 | tmp = gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, tmp, clob)); | |
8068 | emit_insn (tmp); | |
8069 | } | |
8070 | else | |
8071 | emit_insn (gen_rtx_SET (VOIDmode, out, tmp)); | |
8072 | } | |
8073 | if (out != operands[0]) | |
8074 | emit_move_insn (operands[0], out); | |
8075 | ||
8076 | return 1; /* DONE */ | |
8077 | } | |
8078 | ||
8079 | /* | |
8080 | * General case: Jumpful: | |
8081 | * xorl dest,dest cmpl op1, op2 | |
8082 | * cmpl op1, op2 movl ct, dest | |
8083 | * setcc dest jcc 1f | |
8084 | * decl dest movl cf, dest | |
8085 | * andl (cf-ct),dest 1: | |
8086 | * addl ct,dest | |
0f290768 | 8087 | * |
e075ae69 RH |
8088 | * Size 20. Size 14. |
8089 | * | |
8090 | * This is reasonably steep, but branch mispredict costs are | |
8091 | * high on modern cpus, so consider failing only if optimizing | |
8092 | * for space. | |
8093 | * | |
8094 | * %%% Parameterize branch_cost on the tuning architecture, then | |
8095 | * use that. The 80386 couldn't care less about mispredicts. | |
8096 | */ | |
8097 | ||
8098 | if (!optimize_size && !TARGET_CMOVE) | |
8099 | { | |
8100 | if (ct == 0) | |
8101 | { | |
8102 | ct = cf; | |
8103 | cf = 0; | |
734dba19 JH |
8104 | if (FLOAT_MODE_P (GET_MODE (ix86_compare_op0))) |
8105 | { | |
8106 | /* We may be reversing unordered compare to normal compare, | |
8107 | that is not valid in general (we may convert non-trapping | |
8108 | condition to trapping one), however on i386 we currently | |
8109 | emit all comparisons unordered. */ | |
8110 | compare_code = reverse_condition_maybe_unordered (compare_code); | |
8111 | code = reverse_condition_maybe_unordered (code); | |
8112 | } | |
8113 | else | |
8114 | { | |
8115 | compare_code = reverse_condition (compare_code); | |
8116 | code = reverse_condition (code); | |
8117 | } | |
e075ae69 RH |
8118 | } |
8119 | ||
8120 | out = emit_store_flag (out, code, ix86_compare_op0, | |
8121 | ix86_compare_op1, VOIDmode, 0, 1); | |
8122 | ||
635559ab JH |
8123 | out = expand_simple_binop (mode, PLUS, |
8124 | out, constm1_rtx, | |
8125 | out, 1, OPTAB_DIRECT); | |
8126 | out = expand_simple_binop (mode, AND, | |
8127 | out, | |
8128 | GEN_INT (trunc_int_for_mode | |
8129 | (cf - ct, mode)), | |
8130 | out, 1, OPTAB_DIRECT); | |
8131 | out = expand_simple_binop (mode, PLUS, | |
8132 | out, GEN_INT (ct), | |
8133 | out, 1, OPTAB_DIRECT); | |
e075ae69 RH |
8134 | if (out != operands[0]) |
8135 | emit_move_insn (operands[0], out); | |
8136 | ||
8137 | return 1; /* DONE */ | |
8138 | } | |
8139 | } | |
8140 | ||
8141 | if (!TARGET_CMOVE) | |
8142 | { | |
8143 | /* Try a few things more with specific constants and a variable. */ | |
8144 | ||
78a0d70c | 8145 | optab op; |
e075ae69 RH |
8146 | rtx var, orig_out, out, tmp; |
8147 | ||
8148 | if (optimize_size) | |
8149 | return 0; /* FAIL */ | |
8150 | ||
0f290768 | 8151 | /* If one of the two operands is an interesting constant, load a |
e075ae69 | 8152 | constant with the above and mask it in with a logical operation. */ |
0f290768 | 8153 | |
e075ae69 RH |
8154 | if (GET_CODE (operands[2]) == CONST_INT) |
8155 | { | |
8156 | var = operands[3]; | |
8157 | if (INTVAL (operands[2]) == 0) | |
8158 | operands[3] = constm1_rtx, op = and_optab; | |
8159 | else if (INTVAL (operands[2]) == -1) | |
8160 | operands[3] = const0_rtx, op = ior_optab; | |
78a0d70c ZW |
8161 | else |
8162 | return 0; /* FAIL */ | |
e075ae69 RH |
8163 | } |
8164 | else if (GET_CODE (operands[3]) == CONST_INT) | |
8165 | { | |
8166 | var = operands[2]; | |
8167 | if (INTVAL (operands[3]) == 0) | |
8168 | operands[2] = constm1_rtx, op = and_optab; | |
8169 | else if (INTVAL (operands[3]) == -1) | |
8170 | operands[2] = const0_rtx, op = ior_optab; | |
78a0d70c ZW |
8171 | else |
8172 | return 0; /* FAIL */ | |
e075ae69 | 8173 | } |
78a0d70c | 8174 | else |
e075ae69 RH |
8175 | return 0; /* FAIL */ |
8176 | ||
8177 | orig_out = operands[0]; | |
635559ab | 8178 | tmp = gen_reg_rtx (mode); |
e075ae69 RH |
8179 | operands[0] = tmp; |
8180 | ||
8181 | /* Recurse to get the constant loaded. */ | |
8182 | if (ix86_expand_int_movcc (operands) == 0) | |
8183 | return 0; /* FAIL */ | |
8184 | ||
8185 | /* Mask in the interesting variable. */ | |
635559ab | 8186 | out = expand_binop (mode, op, var, tmp, orig_out, 0, |
e075ae69 RH |
8187 | OPTAB_WIDEN); |
8188 | if (out != orig_out) | |
8189 | emit_move_insn (orig_out, out); | |
8190 | ||
8191 | return 1; /* DONE */ | |
8192 | } | |
8193 | ||
8194 | /* | |
8195 | * For comparison with above, | |
8196 | * | |
8197 | * movl cf,dest | |
8198 | * movl ct,tmp | |
8199 | * cmpl op1,op2 | |
8200 | * cmovcc tmp,dest | |
8201 | * | |
8202 | * Size 15. | |
8203 | */ | |
8204 | ||
635559ab JH |
8205 | if (! nonimmediate_operand (operands[2], mode)) |
8206 | operands[2] = force_reg (mode, operands[2]); | |
8207 | if (! nonimmediate_operand (operands[3], mode)) | |
8208 | operands[3] = force_reg (mode, operands[3]); | |
e075ae69 | 8209 | |
a1b8572c JH |
8210 | if (bypass_test && reg_overlap_mentioned_p (operands[0], operands[3])) |
8211 | { | |
635559ab | 8212 | rtx tmp = gen_reg_rtx (mode); |
a1b8572c JH |
8213 | emit_move_insn (tmp, operands[3]); |
8214 | operands[3] = tmp; | |
8215 | } | |
8216 | if (second_test && reg_overlap_mentioned_p (operands[0], operands[2])) | |
8217 | { | |
635559ab | 8218 | rtx tmp = gen_reg_rtx (mode); |
a1b8572c JH |
8219 | emit_move_insn (tmp, operands[2]); |
8220 | operands[2] = tmp; | |
8221 | } | |
c9682caf JH |
8222 | if (! register_operand (operands[2], VOIDmode) |
8223 | && ! register_operand (operands[3], VOIDmode)) | |
635559ab | 8224 | operands[2] = force_reg (mode, operands[2]); |
a1b8572c | 8225 | |
e075ae69 RH |
8226 | emit_insn (compare_seq); |
8227 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], | |
635559ab | 8228 | gen_rtx_IF_THEN_ELSE (mode, |
e075ae69 RH |
8229 | compare_op, operands[2], |
8230 | operands[3]))); | |
a1b8572c JH |
8231 | if (bypass_test) |
8232 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], | |
635559ab | 8233 | gen_rtx_IF_THEN_ELSE (mode, |
a1b8572c JH |
8234 | bypass_test, |
8235 | operands[3], | |
8236 | operands[0]))); | |
8237 | if (second_test) | |
8238 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], | |
635559ab | 8239 | gen_rtx_IF_THEN_ELSE (mode, |
a1b8572c JH |
8240 | second_test, |
8241 | operands[2], | |
8242 | operands[0]))); | |
e075ae69 RH |
8243 | |
8244 | return 1; /* DONE */ | |
e9a25f70 | 8245 | } |
e075ae69 | 8246 | |
32b5b1aa | 8247 | int |
e075ae69 RH |
8248 | ix86_expand_fp_movcc (operands) |
8249 | rtx operands[]; | |
32b5b1aa | 8250 | { |
e075ae69 | 8251 | enum rtx_code code; |
e075ae69 | 8252 | rtx tmp; |
a1b8572c | 8253 | rtx compare_op, second_test, bypass_test; |
32b5b1aa | 8254 | |
0073023d JH |
8255 | /* For SF/DFmode conditional moves based on comparisons |
8256 | in same mode, we may want to use SSE min/max instructions. */ | |
965f5423 JH |
8257 | if (((TARGET_SSE_MATH && GET_MODE (operands[0]) == SFmode) |
8258 | || (TARGET_SSE2 && TARGET_SSE_MATH && GET_MODE (operands[0]) == DFmode)) | |
0073023d | 8259 | && GET_MODE (ix86_compare_op0) == GET_MODE (operands[0]) |
fa9f36a1 JH |
8260 | /* The SSE comparisons does not support the LTGT/UNEQ pair. */ |
8261 | && (!TARGET_IEEE_FP | |
8262 | || (GET_CODE (operands[1]) != LTGT && GET_CODE (operands[1]) != UNEQ)) | |
0073023d JH |
8263 | /* We may be called from the post-reload splitter. */ |
8264 | && (!REG_P (operands[0]) | |
8265 | || SSE_REG_P (operands[0]) | |
52a661a6 | 8266 | || REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER)) |
0073023d JH |
8267 | { |
8268 | rtx op0 = ix86_compare_op0, op1 = ix86_compare_op1; | |
8269 | code = GET_CODE (operands[1]); | |
8270 | ||
8271 | /* See if we have (cross) match between comparison operands and | |
8272 | conditional move operands. */ | |
8273 | if (rtx_equal_p (operands[2], op1)) | |
8274 | { | |
8275 | rtx tmp = op0; | |
8276 | op0 = op1; | |
8277 | op1 = tmp; | |
8278 | code = reverse_condition_maybe_unordered (code); | |
8279 | } | |
8280 | if (rtx_equal_p (operands[2], op0) && rtx_equal_p (operands[3], op1)) | |
8281 | { | |
8282 | /* Check for min operation. */ | |
8283 | if (code == LT) | |
8284 | { | |
8285 | operands[0] = force_reg (GET_MODE (operands[0]), operands[0]); | |
8286 | if (memory_operand (op0, VOIDmode)) | |
8287 | op0 = force_reg (GET_MODE (operands[0]), op0); | |
8288 | if (GET_MODE (operands[0]) == SFmode) | |
8289 | emit_insn (gen_minsf3 (operands[0], op0, op1)); | |
8290 | else | |
8291 | emit_insn (gen_mindf3 (operands[0], op0, op1)); | |
8292 | return 1; | |
8293 | } | |
8294 | /* Check for max operation. */ | |
8295 | if (code == GT) | |
8296 | { | |
8297 | operands[0] = force_reg (GET_MODE (operands[0]), operands[0]); | |
8298 | if (memory_operand (op0, VOIDmode)) | |
8299 | op0 = force_reg (GET_MODE (operands[0]), op0); | |
8300 | if (GET_MODE (operands[0]) == SFmode) | |
8301 | emit_insn (gen_maxsf3 (operands[0], op0, op1)); | |
8302 | else | |
8303 | emit_insn (gen_maxdf3 (operands[0], op0, op1)); | |
8304 | return 1; | |
8305 | } | |
8306 | } | |
8307 | /* Manage condition to be sse_comparison_operator. In case we are | |
8308 | in non-ieee mode, try to canonicalize the destination operand | |
8309 | to be first in the comparison - this helps reload to avoid extra | |
8310 | moves. */ | |
8311 | if (!sse_comparison_operator (operands[1], VOIDmode) | |
8312 | || (rtx_equal_p (operands[0], ix86_compare_op1) && !TARGET_IEEE_FP)) | |
8313 | { | |
8314 | rtx tmp = ix86_compare_op0; | |
8315 | ix86_compare_op0 = ix86_compare_op1; | |
8316 | ix86_compare_op1 = tmp; | |
8317 | operands[1] = gen_rtx_fmt_ee (swap_condition (GET_CODE (operands[1])), | |
8318 | VOIDmode, ix86_compare_op0, | |
8319 | ix86_compare_op1); | |
8320 | } | |
8321 | /* Similary try to manage result to be first operand of conditional | |
fa9f36a1 JH |
8322 | move. We also don't support the NE comparison on SSE, so try to |
8323 | avoid it. */ | |
037f20f1 JH |
8324 | if ((rtx_equal_p (operands[0], operands[3]) |
8325 | && (!TARGET_IEEE_FP || GET_CODE (operands[1]) != EQ)) | |
8326 | || (GET_CODE (operands[1]) == NE && TARGET_IEEE_FP)) | |
0073023d JH |
8327 | { |
8328 | rtx tmp = operands[2]; | |
8329 | operands[2] = operands[3]; | |
92d0fb09 | 8330 | operands[3] = tmp; |
0073023d JH |
8331 | operands[1] = gen_rtx_fmt_ee (reverse_condition_maybe_unordered |
8332 | (GET_CODE (operands[1])), | |
8333 | VOIDmode, ix86_compare_op0, | |
8334 | ix86_compare_op1); | |
8335 | } | |
8336 | if (GET_MODE (operands[0]) == SFmode) | |
8337 | emit_insn (gen_sse_movsfcc (operands[0], operands[1], | |
8338 | operands[2], operands[3], | |
8339 | ix86_compare_op0, ix86_compare_op1)); | |
8340 | else | |
8341 | emit_insn (gen_sse_movdfcc (operands[0], operands[1], | |
8342 | operands[2], operands[3], | |
8343 | ix86_compare_op0, ix86_compare_op1)); | |
8344 | return 1; | |
8345 | } | |
8346 | ||
e075ae69 | 8347 | /* The floating point conditional move instructions don't directly |
0f290768 | 8348 | support conditions resulting from a signed integer comparison. */ |
32b5b1aa | 8349 | |
e075ae69 | 8350 | code = GET_CODE (operands[1]); |
a1b8572c | 8351 | compare_op = ix86_expand_compare (code, &second_test, &bypass_test); |
9e7adcb3 JH |
8352 | |
8353 | /* The floating point conditional move instructions don't directly | |
8354 | support signed integer comparisons. */ | |
8355 | ||
a1b8572c | 8356 | if (!fcmov_comparison_operator (compare_op, VOIDmode)) |
e075ae69 | 8357 | { |
a1b8572c JH |
8358 | if (second_test != NULL || bypass_test != NULL) |
8359 | abort(); | |
e075ae69 | 8360 | tmp = gen_reg_rtx (QImode); |
3a3677ff | 8361 | ix86_expand_setcc (code, tmp); |
e075ae69 RH |
8362 | code = NE; |
8363 | ix86_compare_op0 = tmp; | |
8364 | ix86_compare_op1 = const0_rtx; | |
a1b8572c JH |
8365 | compare_op = ix86_expand_compare (code, &second_test, &bypass_test); |
8366 | } | |
8367 | if (bypass_test && reg_overlap_mentioned_p (operands[0], operands[3])) | |
8368 | { | |
8369 | tmp = gen_reg_rtx (GET_MODE (operands[0])); | |
8370 | emit_move_insn (tmp, operands[3]); | |
8371 | operands[3] = tmp; | |
8372 | } | |
8373 | if (second_test && reg_overlap_mentioned_p (operands[0], operands[2])) | |
8374 | { | |
8375 | tmp = gen_reg_rtx (GET_MODE (operands[0])); | |
8376 | emit_move_insn (tmp, operands[2]); | |
8377 | operands[2] = tmp; | |
e075ae69 | 8378 | } |
e9a25f70 | 8379 | |
e075ae69 RH |
8380 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], |
8381 | gen_rtx_IF_THEN_ELSE (GET_MODE (operands[0]), | |
9e7adcb3 | 8382 | compare_op, |
e075ae69 RH |
8383 | operands[2], |
8384 | operands[3]))); | |
a1b8572c JH |
8385 | if (bypass_test) |
8386 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], | |
8387 | gen_rtx_IF_THEN_ELSE (GET_MODE (operands[0]), | |
8388 | bypass_test, | |
8389 | operands[3], | |
8390 | operands[0]))); | |
8391 | if (second_test) | |
8392 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], | |
8393 | gen_rtx_IF_THEN_ELSE (GET_MODE (operands[0]), | |
8394 | second_test, | |
8395 | operands[2], | |
8396 | operands[0]))); | |
32b5b1aa | 8397 | |
e075ae69 | 8398 | return 1; |
32b5b1aa SC |
8399 | } |
8400 | ||
2450a057 JH |
8401 | /* Split operands 0 and 1 into SImode parts. Similar to split_di, but |
8402 | works for floating pointer parameters and nonoffsetable memories. | |
8403 | For pushes, it returns just stack offsets; the values will be saved | |
8404 | in the right order. Maximally three parts are generated. */ | |
8405 | ||
2b589241 | 8406 | static int |
2450a057 JH |
8407 | ix86_split_to_parts (operand, parts, mode) |
8408 | rtx operand; | |
8409 | rtx *parts; | |
8410 | enum machine_mode mode; | |
32b5b1aa | 8411 | { |
26e5b205 JH |
8412 | int size; |
8413 | ||
8414 | if (!TARGET_64BIT) | |
8415 | size = mode == TFmode ? 3 : (GET_MODE_SIZE (mode) / 4); | |
8416 | else | |
8417 | size = (GET_MODE_SIZE (mode) + 4) / 8; | |
2450a057 | 8418 | |
a7180f70 BS |
8419 | if (GET_CODE (operand) == REG && MMX_REGNO_P (REGNO (operand))) |
8420 | abort (); | |
2450a057 JH |
8421 | if (size < 2 || size > 3) |
8422 | abort (); | |
8423 | ||
d7a29404 JH |
8424 | /* Optimize constant pool reference to immediates. This is used by fp moves, |
8425 | that force all constants to memory to allow combining. */ | |
8426 | ||
8427 | if (GET_CODE (operand) == MEM | |
8428 | && GET_CODE (XEXP (operand, 0)) == SYMBOL_REF | |
8429 | && CONSTANT_POOL_ADDRESS_P (XEXP (operand, 0))) | |
8430 | operand = get_pool_constant (XEXP (operand, 0)); | |
8431 | ||
2450a057 | 8432 | if (GET_CODE (operand) == MEM && !offsettable_memref_p (operand)) |
e075ae69 | 8433 | { |
2450a057 JH |
8434 | /* The only non-offsetable memories we handle are pushes. */ |
8435 | if (! push_operand (operand, VOIDmode)) | |
8436 | abort (); | |
8437 | ||
26e5b205 JH |
8438 | operand = copy_rtx (operand); |
8439 | PUT_MODE (operand, Pmode); | |
2450a057 JH |
8440 | parts[0] = parts[1] = parts[2] = operand; |
8441 | } | |
26e5b205 | 8442 | else if (!TARGET_64BIT) |
2450a057 JH |
8443 | { |
8444 | if (mode == DImode) | |
8445 | split_di (&operand, 1, &parts[0], &parts[1]); | |
8446 | else | |
e075ae69 | 8447 | { |
2450a057 JH |
8448 | if (REG_P (operand)) |
8449 | { | |
8450 | if (!reload_completed) | |
8451 | abort (); | |
8452 | parts[0] = gen_rtx_REG (SImode, REGNO (operand) + 0); | |
8453 | parts[1] = gen_rtx_REG (SImode, REGNO (operand) + 1); | |
8454 | if (size == 3) | |
8455 | parts[2] = gen_rtx_REG (SImode, REGNO (operand) + 2); | |
8456 | } | |
8457 | else if (offsettable_memref_p (operand)) | |
8458 | { | |
f4ef873c | 8459 | operand = adjust_address (operand, SImode, 0); |
2450a057 | 8460 | parts[0] = operand; |
b72f00af | 8461 | parts[1] = adjust_address (operand, SImode, 4); |
2450a057 | 8462 | if (size == 3) |
b72f00af | 8463 | parts[2] = adjust_address (operand, SImode, 8); |
2450a057 JH |
8464 | } |
8465 | else if (GET_CODE (operand) == CONST_DOUBLE) | |
8466 | { | |
8467 | REAL_VALUE_TYPE r; | |
2b589241 | 8468 | long l[4]; |
2450a057 JH |
8469 | |
8470 | REAL_VALUE_FROM_CONST_DOUBLE (r, operand); | |
8471 | switch (mode) | |
8472 | { | |
8473 | case XFmode: | |
2b589241 | 8474 | case TFmode: |
2450a057 | 8475 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, l); |
523fbd9d | 8476 | parts[2] = GEN_INT (trunc_int_for_mode (l[2], SImode)); |
2450a057 JH |
8477 | break; |
8478 | case DFmode: | |
8479 | REAL_VALUE_TO_TARGET_DOUBLE (r, l); | |
8480 | break; | |
8481 | default: | |
8482 | abort (); | |
8483 | } | |
523fbd9d RK |
8484 | parts[1] = GEN_INT (trunc_int_for_mode (l[1], SImode)); |
8485 | parts[0] = GEN_INT (trunc_int_for_mode (l[0], SImode)); | |
2450a057 JH |
8486 | } |
8487 | else | |
8488 | abort (); | |
e075ae69 | 8489 | } |
2450a057 | 8490 | } |
26e5b205 JH |
8491 | else |
8492 | { | |
44cf5b6a JH |
8493 | if (mode == TImode) |
8494 | split_ti (&operand, 1, &parts[0], &parts[1]); | |
26e5b205 JH |
8495 | if (mode == XFmode || mode == TFmode) |
8496 | { | |
8497 | if (REG_P (operand)) | |
8498 | { | |
8499 | if (!reload_completed) | |
8500 | abort (); | |
8501 | parts[0] = gen_rtx_REG (DImode, REGNO (operand) + 0); | |
8502 | parts[1] = gen_rtx_REG (SImode, REGNO (operand) + 1); | |
8503 | } | |
8504 | else if (offsettable_memref_p (operand)) | |
8505 | { | |
b72f00af | 8506 | operand = adjust_address (operand, DImode, 0); |
26e5b205 | 8507 | parts[0] = operand; |
b72f00af | 8508 | parts[1] = adjust_address (operand, SImode, 8); |
26e5b205 JH |
8509 | } |
8510 | else if (GET_CODE (operand) == CONST_DOUBLE) | |
8511 | { | |
8512 | REAL_VALUE_TYPE r; | |
8513 | long l[3]; | |
8514 | ||
8515 | REAL_VALUE_FROM_CONST_DOUBLE (r, operand); | |
8516 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, l); | |
8517 | /* Do not use shift by 32 to avoid warning on 32bit systems. */ | |
8518 | if (HOST_BITS_PER_WIDE_INT >= 64) | |
523fbd9d | 8519 | parts[0] |
44cf5b6a JH |
8520 | = GEN_INT (trunc_int_for_mode |
8521 | ((l[0] & (((HOST_WIDE_INT) 2 << 31) - 1)) | |
8522 | + ((((HOST_WIDE_INT)l[1]) << 31) << 1), | |
8523 | DImode)); | |
26e5b205 JH |
8524 | else |
8525 | parts[0] = immed_double_const (l[0], l[1], DImode); | |
523fbd9d | 8526 | parts[1] = GEN_INT (trunc_int_for_mode (l[2], SImode)); |
26e5b205 JH |
8527 | } |
8528 | else | |
8529 | abort (); | |
8530 | } | |
8531 | } | |
2450a057 | 8532 | |
2b589241 | 8533 | return size; |
2450a057 JH |
8534 | } |
8535 | ||
8536 | /* Emit insns to perform a move or push of DI, DF, and XF values. | |
8537 | Return false when normal moves are needed; true when all required | |
8538 | insns have been emitted. Operands 2-4 contain the input values | |
8539 | int the correct order; operands 5-7 contain the output values. */ | |
8540 | ||
26e5b205 JH |
8541 | void |
8542 | ix86_split_long_move (operands) | |
8543 | rtx operands[]; | |
2450a057 JH |
8544 | { |
8545 | rtx part[2][3]; | |
26e5b205 | 8546 | int nparts; |
2450a057 JH |
8547 | int push = 0; |
8548 | int collisions = 0; | |
26e5b205 JH |
8549 | enum machine_mode mode = GET_MODE (operands[0]); |
8550 | ||
8551 | /* The DFmode expanders may ask us to move double. | |
8552 | For 64bit target this is single move. By hiding the fact | |
8553 | here we simplify i386.md splitters. */ | |
8554 | if (GET_MODE_SIZE (GET_MODE (operands[0])) == 8 && TARGET_64BIT) | |
8555 | { | |
8cdfa312 RH |
8556 | /* Optimize constant pool reference to immediates. This is used by |
8557 | fp moves, that force all constants to memory to allow combining. */ | |
26e5b205 JH |
8558 | |
8559 | if (GET_CODE (operands[1]) == MEM | |
8560 | && GET_CODE (XEXP (operands[1], 0)) == SYMBOL_REF | |
8561 | && CONSTANT_POOL_ADDRESS_P (XEXP (operands[1], 0))) | |
8562 | operands[1] = get_pool_constant (XEXP (operands[1], 0)); | |
8563 | if (push_operand (operands[0], VOIDmode)) | |
b47b4f21 JH |
8564 | { |
8565 | operands[0] = copy_rtx (operands[0]); | |
8566 | PUT_MODE (operands[0], Pmode); | |
8567 | } | |
26e5b205 JH |
8568 | else |
8569 | operands[0] = gen_lowpart (DImode, operands[0]); | |
8570 | operands[1] = gen_lowpart (DImode, operands[1]); | |
8571 | emit_move_insn (operands[0], operands[1]); | |
8572 | return; | |
8573 | } | |
2450a057 | 8574 | |
2450a057 JH |
8575 | /* The only non-offsettable memory we handle is push. */ |
8576 | if (push_operand (operands[0], VOIDmode)) | |
8577 | push = 1; | |
8578 | else if (GET_CODE (operands[0]) == MEM | |
8579 | && ! offsettable_memref_p (operands[0])) | |
8580 | abort (); | |
8581 | ||
26e5b205 JH |
8582 | nparts = ix86_split_to_parts (operands[1], part[1], GET_MODE (operands[0])); |
8583 | ix86_split_to_parts (operands[0], part[0], GET_MODE (operands[0])); | |
2450a057 JH |
8584 | |
8585 | /* When emitting push, take care for source operands on the stack. */ | |
8586 | if (push && GET_CODE (operands[1]) == MEM | |
8587 | && reg_overlap_mentioned_p (stack_pointer_rtx, operands[1])) | |
8588 | { | |
26e5b205 | 8589 | if (nparts == 3) |
886cbb88 JH |
8590 | part[1][1] = change_address (part[1][1], GET_MODE (part[1][1]), |
8591 | XEXP (part[1][2], 0)); | |
8592 | part[1][0] = change_address (part[1][0], GET_MODE (part[1][0]), | |
8593 | XEXP (part[1][1], 0)); | |
2450a057 JH |
8594 | } |
8595 | ||
0f290768 | 8596 | /* We need to do copy in the right order in case an address register |
2450a057 JH |
8597 | of the source overlaps the destination. */ |
8598 | if (REG_P (part[0][0]) && GET_CODE (part[1][0]) == MEM) | |
8599 | { | |
8600 | if (reg_overlap_mentioned_p (part[0][0], XEXP (part[1][0], 0))) | |
8601 | collisions++; | |
8602 | if (reg_overlap_mentioned_p (part[0][1], XEXP (part[1][0], 0))) | |
8603 | collisions++; | |
26e5b205 | 8604 | if (nparts == 3 |
2450a057 JH |
8605 | && reg_overlap_mentioned_p (part[0][2], XEXP (part[1][0], 0))) |
8606 | collisions++; | |
8607 | ||
8608 | /* Collision in the middle part can be handled by reordering. */ | |
26e5b205 | 8609 | if (collisions == 1 && nparts == 3 |
2450a057 | 8610 | && reg_overlap_mentioned_p (part[0][1], XEXP (part[1][0], 0))) |
e075ae69 | 8611 | { |
2450a057 JH |
8612 | rtx tmp; |
8613 | tmp = part[0][1]; part[0][1] = part[0][2]; part[0][2] = tmp; | |
8614 | tmp = part[1][1]; part[1][1] = part[1][2]; part[1][2] = tmp; | |
8615 | } | |
e075ae69 | 8616 | |
2450a057 JH |
8617 | /* If there are more collisions, we can't handle it by reordering. |
8618 | Do an lea to the last part and use only one colliding move. */ | |
8619 | else if (collisions > 1) | |
8620 | { | |
8621 | collisions = 1; | |
26e5b205 | 8622 | emit_insn (gen_rtx_SET (VOIDmode, part[0][nparts - 1], |
2450a057 | 8623 | XEXP (part[1][0], 0))); |
26e5b205 JH |
8624 | part[1][0] = change_address (part[1][0], |
8625 | TARGET_64BIT ? DImode : SImode, | |
8626 | part[0][nparts - 1]); | |
b72f00af | 8627 | part[1][1] = adjust_address (part[1][0], VOIDmode, UNITS_PER_WORD); |
26e5b205 | 8628 | if (nparts == 3) |
b72f00af | 8629 | part[1][2] = adjust_address (part[1][0], VOIDmode, 8); |
2450a057 JH |
8630 | } |
8631 | } | |
8632 | ||
8633 | if (push) | |
8634 | { | |
26e5b205 | 8635 | if (!TARGET_64BIT) |
2b589241 | 8636 | { |
26e5b205 JH |
8637 | if (nparts == 3) |
8638 | { | |
8639 | /* We use only first 12 bytes of TFmode value, but for pushing we | |
8640 | are required to adjust stack as if we were pushing real 16byte | |
8641 | value. */ | |
8642 | if (mode == TFmode && !TARGET_64BIT) | |
8643 | emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, | |
8644 | GEN_INT (-4))); | |
8645 | emit_move_insn (part[0][2], part[1][2]); | |
8646 | } | |
2b589241 | 8647 | } |
26e5b205 JH |
8648 | else |
8649 | { | |
8650 | /* In 64bit mode we don't have 32bit push available. In case this is | |
8651 | register, it is OK - we will just use larger counterpart. We also | |
8652 | retype memory - these comes from attempt to avoid REX prefix on | |
8653 | moving of second half of TFmode value. */ | |
8654 | if (GET_MODE (part[1][1]) == SImode) | |
8655 | { | |
8656 | if (GET_CODE (part[1][1]) == MEM) | |
f4ef873c | 8657 | part[1][1] = adjust_address (part[1][1], DImode, 0); |
26e5b205 JH |
8658 | else if (REG_P (part[1][1])) |
8659 | part[1][1] = gen_rtx_REG (DImode, REGNO (part[1][1])); | |
8660 | else | |
8661 | abort(); | |
886cbb88 JH |
8662 | if (GET_MODE (part[1][0]) == SImode) |
8663 | part[1][0] = part[1][1]; | |
26e5b205 JH |
8664 | } |
8665 | } | |
8666 | emit_move_insn (part[0][1], part[1][1]); | |
8667 | emit_move_insn (part[0][0], part[1][0]); | |
8668 | return; | |
2450a057 JH |
8669 | } |
8670 | ||
8671 | /* Choose correct order to not overwrite the source before it is copied. */ | |
8672 | if ((REG_P (part[0][0]) | |
8673 | && REG_P (part[1][1]) | |
8674 | && (REGNO (part[0][0]) == REGNO (part[1][1]) | |
26e5b205 | 8675 | || (nparts == 3 |
2450a057 JH |
8676 | && REGNO (part[0][0]) == REGNO (part[1][2])))) |
8677 | || (collisions > 0 | |
8678 | && reg_overlap_mentioned_p (part[0][0], XEXP (part[1][0], 0)))) | |
8679 | { | |
26e5b205 | 8680 | if (nparts == 3) |
2450a057 | 8681 | { |
26e5b205 JH |
8682 | operands[2] = part[0][2]; |
8683 | operands[3] = part[0][1]; | |
8684 | operands[4] = part[0][0]; | |
8685 | operands[5] = part[1][2]; | |
8686 | operands[6] = part[1][1]; | |
8687 | operands[7] = part[1][0]; | |
2450a057 JH |
8688 | } |
8689 | else | |
8690 | { | |
26e5b205 JH |
8691 | operands[2] = part[0][1]; |
8692 | operands[3] = part[0][0]; | |
8693 | operands[5] = part[1][1]; | |
8694 | operands[6] = part[1][0]; | |
2450a057 JH |
8695 | } |
8696 | } | |
8697 | else | |
8698 | { | |
26e5b205 | 8699 | if (nparts == 3) |
2450a057 | 8700 | { |
26e5b205 JH |
8701 | operands[2] = part[0][0]; |
8702 | operands[3] = part[0][1]; | |
8703 | operands[4] = part[0][2]; | |
8704 | operands[5] = part[1][0]; | |
8705 | operands[6] = part[1][1]; | |
8706 | operands[7] = part[1][2]; | |
2450a057 JH |
8707 | } |
8708 | else | |
8709 | { | |
26e5b205 JH |
8710 | operands[2] = part[0][0]; |
8711 | operands[3] = part[0][1]; | |
8712 | operands[5] = part[1][0]; | |
8713 | operands[6] = part[1][1]; | |
e075ae69 RH |
8714 | } |
8715 | } | |
26e5b205 JH |
8716 | emit_move_insn (operands[2], operands[5]); |
8717 | emit_move_insn (operands[3], operands[6]); | |
8718 | if (nparts == 3) | |
8719 | emit_move_insn (operands[4], operands[7]); | |
32b5b1aa | 8720 | |
26e5b205 | 8721 | return; |
32b5b1aa | 8722 | } |
32b5b1aa | 8723 | |
e075ae69 RH |
8724 | void |
8725 | ix86_split_ashldi (operands, scratch) | |
8726 | rtx *operands, scratch; | |
32b5b1aa | 8727 | { |
e075ae69 RH |
8728 | rtx low[2], high[2]; |
8729 | int count; | |
b985a30f | 8730 | |
e075ae69 RH |
8731 | if (GET_CODE (operands[2]) == CONST_INT) |
8732 | { | |
8733 | split_di (operands, 2, low, high); | |
8734 | count = INTVAL (operands[2]) & 63; | |
32b5b1aa | 8735 | |
e075ae69 RH |
8736 | if (count >= 32) |
8737 | { | |
8738 | emit_move_insn (high[0], low[1]); | |
8739 | emit_move_insn (low[0], const0_rtx); | |
b985a30f | 8740 | |
e075ae69 RH |
8741 | if (count > 32) |
8742 | emit_insn (gen_ashlsi3 (high[0], high[0], GEN_INT (count - 32))); | |
8743 | } | |
8744 | else | |
8745 | { | |
8746 | if (!rtx_equal_p (operands[0], operands[1])) | |
8747 | emit_move_insn (operands[0], operands[1]); | |
8748 | emit_insn (gen_x86_shld_1 (high[0], low[0], GEN_INT (count))); | |
8749 | emit_insn (gen_ashlsi3 (low[0], low[0], GEN_INT (count))); | |
8750 | } | |
8751 | } | |
8752 | else | |
8753 | { | |
8754 | if (!rtx_equal_p (operands[0], operands[1])) | |
8755 | emit_move_insn (operands[0], operands[1]); | |
b985a30f | 8756 | |
e075ae69 | 8757 | split_di (operands, 1, low, high); |
b985a30f | 8758 | |
e075ae69 RH |
8759 | emit_insn (gen_x86_shld_1 (high[0], low[0], operands[2])); |
8760 | emit_insn (gen_ashlsi3 (low[0], low[0], operands[2])); | |
32b5b1aa | 8761 | |
fe577e58 | 8762 | if (TARGET_CMOVE && (! no_new_pseudos || scratch)) |
e075ae69 | 8763 | { |
fe577e58 | 8764 | if (! no_new_pseudos) |
e075ae69 RH |
8765 | scratch = force_reg (SImode, const0_rtx); |
8766 | else | |
8767 | emit_move_insn (scratch, const0_rtx); | |
8768 | ||
8769 | emit_insn (gen_x86_shift_adj_1 (high[0], low[0], operands[2], | |
8770 | scratch)); | |
8771 | } | |
8772 | else | |
8773 | emit_insn (gen_x86_shift_adj_2 (high[0], low[0], operands[2])); | |
8774 | } | |
e9a25f70 | 8775 | } |
32b5b1aa | 8776 | |
e075ae69 RH |
8777 | void |
8778 | ix86_split_ashrdi (operands, scratch) | |
8779 | rtx *operands, scratch; | |
32b5b1aa | 8780 | { |
e075ae69 RH |
8781 | rtx low[2], high[2]; |
8782 | int count; | |
32b5b1aa | 8783 | |
e075ae69 RH |
8784 | if (GET_CODE (operands[2]) == CONST_INT) |
8785 | { | |
8786 | split_di (operands, 2, low, high); | |
8787 | count = INTVAL (operands[2]) & 63; | |
32b5b1aa | 8788 | |
e075ae69 RH |
8789 | if (count >= 32) |
8790 | { | |
8791 | emit_move_insn (low[0], high[1]); | |
32b5b1aa | 8792 | |
e075ae69 RH |
8793 | if (! reload_completed) |
8794 | emit_insn (gen_ashrsi3 (high[0], low[0], GEN_INT (31))); | |
8795 | else | |
8796 | { | |
8797 | emit_move_insn (high[0], low[0]); | |
8798 | emit_insn (gen_ashrsi3 (high[0], high[0], GEN_INT (31))); | |
8799 | } | |
8800 | ||
8801 | if (count > 32) | |
8802 | emit_insn (gen_ashrsi3 (low[0], low[0], GEN_INT (count - 32))); | |
8803 | } | |
8804 | else | |
8805 | { | |
8806 | if (!rtx_equal_p (operands[0], operands[1])) | |
8807 | emit_move_insn (operands[0], operands[1]); | |
8808 | emit_insn (gen_x86_shrd_1 (low[0], high[0], GEN_INT (count))); | |
8809 | emit_insn (gen_ashrsi3 (high[0], high[0], GEN_INT (count))); | |
8810 | } | |
8811 | } | |
8812 | else | |
32b5b1aa | 8813 | { |
e075ae69 RH |
8814 | if (!rtx_equal_p (operands[0], operands[1])) |
8815 | emit_move_insn (operands[0], operands[1]); | |
8816 | ||
8817 | split_di (operands, 1, low, high); | |
8818 | ||
8819 | emit_insn (gen_x86_shrd_1 (low[0], high[0], operands[2])); | |
8820 | emit_insn (gen_ashrsi3 (high[0], high[0], operands[2])); | |
8821 | ||
fe577e58 | 8822 | if (TARGET_CMOVE && (! no_new_pseudos || scratch)) |
e075ae69 | 8823 | { |
fe577e58 | 8824 | if (! no_new_pseudos) |
e075ae69 RH |
8825 | scratch = gen_reg_rtx (SImode); |
8826 | emit_move_insn (scratch, high[0]); | |
8827 | emit_insn (gen_ashrsi3 (scratch, scratch, GEN_INT (31))); | |
8828 | emit_insn (gen_x86_shift_adj_1 (low[0], high[0], operands[2], | |
8829 | scratch)); | |
8830 | } | |
8831 | else | |
8832 | emit_insn (gen_x86_shift_adj_3 (low[0], high[0], operands[2])); | |
32b5b1aa | 8833 | } |
e075ae69 | 8834 | } |
32b5b1aa | 8835 | |
e075ae69 RH |
8836 | void |
8837 | ix86_split_lshrdi (operands, scratch) | |
8838 | rtx *operands, scratch; | |
8839 | { | |
8840 | rtx low[2], high[2]; | |
8841 | int count; | |
32b5b1aa | 8842 | |
e075ae69 | 8843 | if (GET_CODE (operands[2]) == CONST_INT) |
32b5b1aa | 8844 | { |
e075ae69 RH |
8845 | split_di (operands, 2, low, high); |
8846 | count = INTVAL (operands[2]) & 63; | |
8847 | ||
8848 | if (count >= 32) | |
c7271385 | 8849 | { |
e075ae69 RH |
8850 | emit_move_insn (low[0], high[1]); |
8851 | emit_move_insn (high[0], const0_rtx); | |
32b5b1aa | 8852 | |
e075ae69 RH |
8853 | if (count > 32) |
8854 | emit_insn (gen_lshrsi3 (low[0], low[0], GEN_INT (count - 32))); | |
8855 | } | |
8856 | else | |
8857 | { | |
8858 | if (!rtx_equal_p (operands[0], operands[1])) | |
8859 | emit_move_insn (operands[0], operands[1]); | |
8860 | emit_insn (gen_x86_shrd_1 (low[0], high[0], GEN_INT (count))); | |
8861 | emit_insn (gen_lshrsi3 (high[0], high[0], GEN_INT (count))); | |
8862 | } | |
32b5b1aa | 8863 | } |
e075ae69 RH |
8864 | else |
8865 | { | |
8866 | if (!rtx_equal_p (operands[0], operands[1])) | |
8867 | emit_move_insn (operands[0], operands[1]); | |
32b5b1aa | 8868 | |
e075ae69 RH |
8869 | split_di (operands, 1, low, high); |
8870 | ||
8871 | emit_insn (gen_x86_shrd_1 (low[0], high[0], operands[2])); | |
8872 | emit_insn (gen_lshrsi3 (high[0], high[0], operands[2])); | |
8873 | ||
8874 | /* Heh. By reversing the arguments, we can reuse this pattern. */ | |
fe577e58 | 8875 | if (TARGET_CMOVE && (! no_new_pseudos || scratch)) |
e075ae69 | 8876 | { |
fe577e58 | 8877 | if (! no_new_pseudos) |
e075ae69 RH |
8878 | scratch = force_reg (SImode, const0_rtx); |
8879 | else | |
8880 | emit_move_insn (scratch, const0_rtx); | |
8881 | ||
8882 | emit_insn (gen_x86_shift_adj_1 (low[0], high[0], operands[2], | |
8883 | scratch)); | |
8884 | } | |
8885 | else | |
8886 | emit_insn (gen_x86_shift_adj_2 (low[0], high[0], operands[2])); | |
8887 | } | |
32b5b1aa | 8888 | } |
3f803cd9 | 8889 | |
0407c02b | 8890 | /* Helper function for the string operations below. Dest VARIABLE whether |
0945b39d JH |
8891 | it is aligned to VALUE bytes. If true, jump to the label. */ |
8892 | static rtx | |
8893 | ix86_expand_aligntest (variable, value) | |
8894 | rtx variable; | |
8895 | int value; | |
8896 | { | |
8897 | rtx label = gen_label_rtx (); | |
8898 | rtx tmpcount = gen_reg_rtx (GET_MODE (variable)); | |
8899 | if (GET_MODE (variable) == DImode) | |
8900 | emit_insn (gen_anddi3 (tmpcount, variable, GEN_INT (value))); | |
8901 | else | |
8902 | emit_insn (gen_andsi3 (tmpcount, variable, GEN_INT (value))); | |
8903 | emit_cmp_and_jump_insns (tmpcount, const0_rtx, EQ, 0, GET_MODE (variable), | |
d43e0b7d | 8904 | 1, label); |
0945b39d JH |
8905 | return label; |
8906 | } | |
8907 | ||
8908 | /* Adjust COUNTER by the VALUE. */ | |
8909 | static void | |
8910 | ix86_adjust_counter (countreg, value) | |
8911 | rtx countreg; | |
8912 | HOST_WIDE_INT value; | |
8913 | { | |
8914 | if (GET_MODE (countreg) == DImode) | |
8915 | emit_insn (gen_adddi3 (countreg, countreg, GEN_INT (-value))); | |
8916 | else | |
8917 | emit_insn (gen_addsi3 (countreg, countreg, GEN_INT (-value))); | |
8918 | } | |
8919 | ||
8920 | /* Zero extend possibly SImode EXP to Pmode register. */ | |
d24b3457 | 8921 | rtx |
0945b39d JH |
8922 | ix86_zero_extend_to_Pmode (exp) |
8923 | rtx exp; | |
8924 | { | |
8925 | rtx r; | |
8926 | if (GET_MODE (exp) == VOIDmode) | |
8927 | return force_reg (Pmode, exp); | |
8928 | if (GET_MODE (exp) == Pmode) | |
8929 | return copy_to_mode_reg (Pmode, exp); | |
8930 | r = gen_reg_rtx (Pmode); | |
8931 | emit_insn (gen_zero_extendsidi2 (r, exp)); | |
8932 | return r; | |
8933 | } | |
8934 | ||
8935 | /* Expand string move (memcpy) operation. Use i386 string operations when | |
8936 | profitable. expand_clrstr contains similar code. */ | |
8937 | int | |
8938 | ix86_expand_movstr (dst, src, count_exp, align_exp) | |
8939 | rtx dst, src, count_exp, align_exp; | |
8940 | { | |
8941 | rtx srcreg, destreg, countreg; | |
8942 | enum machine_mode counter_mode; | |
8943 | HOST_WIDE_INT align = 0; | |
8944 | unsigned HOST_WIDE_INT count = 0; | |
8945 | rtx insns; | |
8946 | ||
8947 | start_sequence (); | |
8948 | ||
8949 | if (GET_CODE (align_exp) == CONST_INT) | |
8950 | align = INTVAL (align_exp); | |
8951 | ||
5519a4f9 | 8952 | /* This simple hack avoids all inlining code and simplifies code below. */ |
0945b39d JH |
8953 | if (!TARGET_ALIGN_STRINGOPS) |
8954 | align = 64; | |
8955 | ||
8956 | if (GET_CODE (count_exp) == CONST_INT) | |
8957 | count = INTVAL (count_exp); | |
8958 | ||
8959 | /* Figure out proper mode for counter. For 32bits it is always SImode, | |
8960 | for 64bits use SImode when possible, otherwise DImode. | |
8961 | Set count to number of bytes copied when known at compile time. */ | |
8962 | if (!TARGET_64BIT || GET_MODE (count_exp) == SImode | |
8963 | || x86_64_zero_extended_value (count_exp)) | |
8964 | counter_mode = SImode; | |
8965 | else | |
8966 | counter_mode = DImode; | |
8967 | ||
8968 | if (counter_mode != SImode && counter_mode != DImode) | |
8969 | abort (); | |
8970 | ||
8971 | destreg = copy_to_mode_reg (Pmode, XEXP (dst, 0)); | |
8972 | srcreg = copy_to_mode_reg (Pmode, XEXP (src, 0)); | |
8973 | ||
8974 | emit_insn (gen_cld ()); | |
8975 | ||
8976 | /* When optimizing for size emit simple rep ; movsb instruction for | |
8977 | counts not divisible by 4. */ | |
8978 | ||
8979 | if ((!optimize || optimize_size) && (count == 0 || (count & 0x03))) | |
8980 | { | |
8981 | countreg = ix86_zero_extend_to_Pmode (count_exp); | |
8982 | if (TARGET_64BIT) | |
8983 | emit_insn (gen_rep_movqi_rex64 (destreg, srcreg, countreg, | |
8984 | destreg, srcreg, countreg)); | |
8985 | else | |
8986 | emit_insn (gen_rep_movqi (destreg, srcreg, countreg, | |
8987 | destreg, srcreg, countreg)); | |
8988 | } | |
8989 | ||
8990 | /* For constant aligned (or small unaligned) copies use rep movsl | |
8991 | followed by code copying the rest. For PentiumPro ensure 8 byte | |
8992 | alignment to allow rep movsl acceleration. */ | |
8993 | ||
8994 | else if (count != 0 | |
8995 | && (align >= 8 | |
8996 | || (!TARGET_PENTIUMPRO && !TARGET_64BIT && align >= 4) | |
8997 | || optimize_size || count < (unsigned int)64)) | |
8998 | { | |
8999 | int size = TARGET_64BIT && !optimize_size ? 8 : 4; | |
9000 | if (count & ~(size - 1)) | |
9001 | { | |
9002 | countreg = copy_to_mode_reg (counter_mode, | |
9003 | GEN_INT ((count >> (size == 4 ? 2 : 3)) | |
9004 | & (TARGET_64BIT ? -1 : 0x3fffffff))); | |
9005 | countreg = ix86_zero_extend_to_Pmode (countreg); | |
9006 | if (size == 4) | |
9007 | { | |
9008 | if (TARGET_64BIT) | |
9009 | emit_insn (gen_rep_movsi_rex64 (destreg, srcreg, countreg, | |
9010 | destreg, srcreg, countreg)); | |
9011 | else | |
9012 | emit_insn (gen_rep_movsi (destreg, srcreg, countreg, | |
9013 | destreg, srcreg, countreg)); | |
9014 | } | |
9015 | else | |
9016 | emit_insn (gen_rep_movdi_rex64 (destreg, srcreg, countreg, | |
9017 | destreg, srcreg, countreg)); | |
9018 | } | |
9019 | if (size == 8 && (count & 0x04)) | |
9020 | emit_insn (gen_strmovsi (destreg, srcreg)); | |
9021 | if (count & 0x02) | |
9022 | emit_insn (gen_strmovhi (destreg, srcreg)); | |
9023 | if (count & 0x01) | |
9024 | emit_insn (gen_strmovqi (destreg, srcreg)); | |
9025 | } | |
9026 | /* The generic code based on the glibc implementation: | |
9027 | - align destination to 4 bytes (8 byte alignment is used for PentiumPro | |
9028 | allowing accelerated copying there) | |
9029 | - copy the data using rep movsl | |
9030 | - copy the rest. */ | |
9031 | else | |
9032 | { | |
9033 | rtx countreg2; | |
9034 | rtx label = NULL; | |
9035 | ||
9036 | /* In case we don't know anything about the alignment, default to | |
9037 | library version, since it is usually equally fast and result in | |
9038 | shorter code. */ | |
9039 | if (!TARGET_INLINE_ALL_STRINGOPS && align < UNITS_PER_WORD) | |
9040 | { | |
9041 | end_sequence (); | |
9042 | return 0; | |
9043 | } | |
9044 | ||
9045 | if (TARGET_SINGLE_STRINGOP) | |
9046 | emit_insn (gen_cld ()); | |
9047 | ||
9048 | countreg2 = gen_reg_rtx (Pmode); | |
9049 | countreg = copy_to_mode_reg (counter_mode, count_exp); | |
9050 | ||
9051 | /* We don't use loops to align destination and to copy parts smaller | |
9052 | than 4 bytes, because gcc is able to optimize such code better (in | |
9053 | the case the destination or the count really is aligned, gcc is often | |
9054 | able to predict the branches) and also it is friendlier to the | |
a4f31c00 | 9055 | hardware branch prediction. |
0945b39d JH |
9056 | |
9057 | Using loops is benefical for generic case, because we can | |
9058 | handle small counts using the loops. Many CPUs (such as Athlon) | |
9059 | have large REP prefix setup costs. | |
9060 | ||
9061 | This is quite costy. Maybe we can revisit this decision later or | |
9062 | add some customizability to this code. */ | |
9063 | ||
9064 | if (count == 0 | |
9065 | && align < (TARGET_PENTIUMPRO && (count == 0 | |
9066 | || count >= (unsigned int)260) | |
9067 | ? 8 : UNITS_PER_WORD)) | |
9068 | { | |
9069 | label = gen_label_rtx (); | |
9070 | emit_cmp_and_jump_insns (countreg, GEN_INT (UNITS_PER_WORD - 1), | |
d43e0b7d | 9071 | LEU, 0, counter_mode, 1, label); |
0945b39d JH |
9072 | } |
9073 | if (align <= 1) | |
9074 | { | |
9075 | rtx label = ix86_expand_aligntest (destreg, 1); | |
9076 | emit_insn (gen_strmovqi (destreg, srcreg)); | |
9077 | ix86_adjust_counter (countreg, 1); | |
9078 | emit_label (label); | |
9079 | LABEL_NUSES (label) = 1; | |
9080 | } | |
9081 | if (align <= 2) | |
9082 | { | |
9083 | rtx label = ix86_expand_aligntest (destreg, 2); | |
9084 | emit_insn (gen_strmovhi (destreg, srcreg)); | |
9085 | ix86_adjust_counter (countreg, 2); | |
9086 | emit_label (label); | |
9087 | LABEL_NUSES (label) = 1; | |
9088 | } | |
9089 | if (align <= 4 | |
9090 | && ((TARGET_PENTIUMPRO && (count == 0 | |
9091 | || count >= (unsigned int)260)) | |
9092 | || TARGET_64BIT)) | |
9093 | { | |
9094 | rtx label = ix86_expand_aligntest (destreg, 4); | |
9095 | emit_insn (gen_strmovsi (destreg, srcreg)); | |
9096 | ix86_adjust_counter (countreg, 4); | |
9097 | emit_label (label); | |
9098 | LABEL_NUSES (label) = 1; | |
9099 | } | |
9100 | ||
9101 | if (!TARGET_SINGLE_STRINGOP) | |
9102 | emit_insn (gen_cld ()); | |
9103 | if (TARGET_64BIT) | |
9104 | { | |
9105 | emit_insn (gen_lshrdi3 (countreg2, ix86_zero_extend_to_Pmode (countreg), | |
9106 | GEN_INT (3))); | |
9107 | emit_insn (gen_rep_movdi_rex64 (destreg, srcreg, countreg2, | |
9108 | destreg, srcreg, countreg2)); | |
9109 | } | |
9110 | else | |
9111 | { | |
9112 | emit_insn (gen_lshrsi3 (countreg2, countreg, GEN_INT (2))); | |
9113 | emit_insn (gen_rep_movsi (destreg, srcreg, countreg2, | |
9114 | destreg, srcreg, countreg2)); | |
9115 | } | |
9116 | ||
9117 | if (label) | |
9118 | { | |
9119 | emit_label (label); | |
9120 | LABEL_NUSES (label) = 1; | |
9121 | } | |
9122 | if (TARGET_64BIT && align > 4 && count != 0 && (count & 4)) | |
9123 | emit_insn (gen_strmovsi (destreg, srcreg)); | |
9124 | if ((align <= 4 || count == 0) && TARGET_64BIT) | |
9125 | { | |
9126 | rtx label = ix86_expand_aligntest (countreg, 4); | |
9127 | emit_insn (gen_strmovsi (destreg, srcreg)); | |
9128 | emit_label (label); | |
9129 | LABEL_NUSES (label) = 1; | |
9130 | } | |
9131 | if (align > 2 && count != 0 && (count & 2)) | |
9132 | emit_insn (gen_strmovhi (destreg, srcreg)); | |
9133 | if (align <= 2 || count == 0) | |
9134 | { | |
9135 | rtx label = ix86_expand_aligntest (countreg, 2); | |
9136 | emit_insn (gen_strmovhi (destreg, srcreg)); | |
9137 | emit_label (label); | |
9138 | LABEL_NUSES (label) = 1; | |
9139 | } | |
9140 | if (align > 1 && count != 0 && (count & 1)) | |
9141 | emit_insn (gen_strmovqi (destreg, srcreg)); | |
9142 | if (align <= 1 || count == 0) | |
9143 | { | |
9144 | rtx label = ix86_expand_aligntest (countreg, 1); | |
9145 | emit_insn (gen_strmovqi (destreg, srcreg)); | |
9146 | emit_label (label); | |
9147 | LABEL_NUSES (label) = 1; | |
9148 | } | |
9149 | } | |
9150 | ||
9151 | insns = get_insns (); | |
9152 | end_sequence (); | |
9153 | ||
9154 | ix86_set_move_mem_attrs (insns, dst, src, destreg, srcreg); | |
9155 | emit_insns (insns); | |
9156 | return 1; | |
9157 | } | |
9158 | ||
9159 | /* Expand string clear operation (bzero). Use i386 string operations when | |
9160 | profitable. expand_movstr contains similar code. */ | |
9161 | int | |
9162 | ix86_expand_clrstr (src, count_exp, align_exp) | |
9163 | rtx src, count_exp, align_exp; | |
9164 | { | |
9165 | rtx destreg, zeroreg, countreg; | |
9166 | enum machine_mode counter_mode; | |
9167 | HOST_WIDE_INT align = 0; | |
9168 | unsigned HOST_WIDE_INT count = 0; | |
9169 | ||
9170 | if (GET_CODE (align_exp) == CONST_INT) | |
9171 | align = INTVAL (align_exp); | |
9172 | ||
5519a4f9 | 9173 | /* This simple hack avoids all inlining code and simplifies code below. */ |
0945b39d JH |
9174 | if (!TARGET_ALIGN_STRINGOPS) |
9175 | align = 32; | |
9176 | ||
9177 | if (GET_CODE (count_exp) == CONST_INT) | |
9178 | count = INTVAL (count_exp); | |
9179 | /* Figure out proper mode for counter. For 32bits it is always SImode, | |
9180 | for 64bits use SImode when possible, otherwise DImode. | |
9181 | Set count to number of bytes copied when known at compile time. */ | |
9182 | if (!TARGET_64BIT || GET_MODE (count_exp) == SImode | |
9183 | || x86_64_zero_extended_value (count_exp)) | |
9184 | counter_mode = SImode; | |
9185 | else | |
9186 | counter_mode = DImode; | |
9187 | ||
9188 | destreg = copy_to_mode_reg (Pmode, XEXP (src, 0)); | |
9189 | ||
9190 | emit_insn (gen_cld ()); | |
9191 | ||
9192 | /* When optimizing for size emit simple rep ; movsb instruction for | |
9193 | counts not divisible by 4. */ | |
9194 | ||
9195 | if ((!optimize || optimize_size) && (count == 0 || (count & 0x03))) | |
9196 | { | |
9197 | countreg = ix86_zero_extend_to_Pmode (count_exp); | |
9198 | zeroreg = copy_to_mode_reg (QImode, const0_rtx); | |
9199 | if (TARGET_64BIT) | |
9200 | emit_insn (gen_rep_stosqi_rex64 (destreg, countreg, zeroreg, | |
9201 | destreg, countreg)); | |
9202 | else | |
9203 | emit_insn (gen_rep_stosqi (destreg, countreg, zeroreg, | |
9204 | destreg, countreg)); | |
9205 | } | |
9206 | else if (count != 0 | |
9207 | && (align >= 8 | |
9208 | || (!TARGET_PENTIUMPRO && !TARGET_64BIT && align >= 4) | |
9209 | || optimize_size || count < (unsigned int)64)) | |
9210 | { | |
9211 | int size = TARGET_64BIT && !optimize_size ? 8 : 4; | |
9212 | zeroreg = copy_to_mode_reg (size == 4 ? SImode : DImode, const0_rtx); | |
9213 | if (count & ~(size - 1)) | |
9214 | { | |
9215 | countreg = copy_to_mode_reg (counter_mode, | |
9216 | GEN_INT ((count >> (size == 4 ? 2 : 3)) | |
9217 | & (TARGET_64BIT ? -1 : 0x3fffffff))); | |
9218 | countreg = ix86_zero_extend_to_Pmode (countreg); | |
9219 | if (size == 4) | |
9220 | { | |
9221 | if (TARGET_64BIT) | |
9222 | emit_insn (gen_rep_stossi_rex64 (destreg, countreg, zeroreg, | |
9223 | destreg, countreg)); | |
9224 | else | |
9225 | emit_insn (gen_rep_stossi (destreg, countreg, zeroreg, | |
9226 | destreg, countreg)); | |
9227 | } | |
9228 | else | |
9229 | emit_insn (gen_rep_stosdi_rex64 (destreg, countreg, zeroreg, | |
9230 | destreg, countreg)); | |
9231 | } | |
9232 | if (size == 8 && (count & 0x04)) | |
9233 | emit_insn (gen_strsetsi (destreg, | |
9234 | gen_rtx_SUBREG (SImode, zeroreg, 0))); | |
9235 | if (count & 0x02) | |
9236 | emit_insn (gen_strsethi (destreg, | |
9237 | gen_rtx_SUBREG (HImode, zeroreg, 0))); | |
9238 | if (count & 0x01) | |
9239 | emit_insn (gen_strsetqi (destreg, | |
9240 | gen_rtx_SUBREG (QImode, zeroreg, 0))); | |
9241 | } | |
9242 | else | |
9243 | { | |
9244 | rtx countreg2; | |
9245 | rtx label = NULL; | |
9246 | ||
9247 | /* In case we don't know anything about the alignment, default to | |
9248 | library version, since it is usually equally fast and result in | |
9249 | shorter code. */ | |
9250 | if (!TARGET_INLINE_ALL_STRINGOPS && align < UNITS_PER_WORD) | |
9251 | return 0; | |
9252 | ||
9253 | if (TARGET_SINGLE_STRINGOP) | |
9254 | emit_insn (gen_cld ()); | |
9255 | ||
9256 | countreg2 = gen_reg_rtx (Pmode); | |
9257 | countreg = copy_to_mode_reg (counter_mode, count_exp); | |
9258 | zeroreg = copy_to_mode_reg (Pmode, const0_rtx); | |
9259 | ||
9260 | if (count == 0 | |
9261 | && align < (TARGET_PENTIUMPRO && (count == 0 | |
9262 | || count >= (unsigned int)260) | |
9263 | ? 8 : UNITS_PER_WORD)) | |
9264 | { | |
9265 | label = gen_label_rtx (); | |
9266 | emit_cmp_and_jump_insns (countreg, GEN_INT (UNITS_PER_WORD - 1), | |
d43e0b7d | 9267 | LEU, 0, counter_mode, 1, label); |
0945b39d JH |
9268 | } |
9269 | if (align <= 1) | |
9270 | { | |
9271 | rtx label = ix86_expand_aligntest (destreg, 1); | |
9272 | emit_insn (gen_strsetqi (destreg, | |
9273 | gen_rtx_SUBREG (QImode, zeroreg, 0))); | |
9274 | ix86_adjust_counter (countreg, 1); | |
9275 | emit_label (label); | |
9276 | LABEL_NUSES (label) = 1; | |
9277 | } | |
9278 | if (align <= 2) | |
9279 | { | |
9280 | rtx label = ix86_expand_aligntest (destreg, 2); | |
9281 | emit_insn (gen_strsethi (destreg, | |
9282 | gen_rtx_SUBREG (HImode, zeroreg, 0))); | |
9283 | ix86_adjust_counter (countreg, 2); | |
9284 | emit_label (label); | |
9285 | LABEL_NUSES (label) = 1; | |
9286 | } | |
9287 | if (align <= 4 && TARGET_PENTIUMPRO && (count == 0 | |
9288 | || count >= (unsigned int)260)) | |
9289 | { | |
9290 | rtx label = ix86_expand_aligntest (destreg, 4); | |
9291 | emit_insn (gen_strsetsi (destreg, (TARGET_64BIT | |
9292 | ? gen_rtx_SUBREG (SImode, zeroreg, 0) | |
9293 | : zeroreg))); | |
9294 | ix86_adjust_counter (countreg, 4); | |
9295 | emit_label (label); | |
9296 | LABEL_NUSES (label) = 1; | |
9297 | } | |
9298 | ||
9299 | if (!TARGET_SINGLE_STRINGOP) | |
9300 | emit_insn (gen_cld ()); | |
9301 | if (TARGET_64BIT) | |
9302 | { | |
9303 | emit_insn (gen_lshrdi3 (countreg2, ix86_zero_extend_to_Pmode (countreg), | |
9304 | GEN_INT (3))); | |
9305 | emit_insn (gen_rep_stosdi_rex64 (destreg, countreg2, zeroreg, | |
9306 | destreg, countreg2)); | |
9307 | } | |
9308 | else | |
9309 | { | |
9310 | emit_insn (gen_lshrsi3 (countreg2, countreg, GEN_INT (2))); | |
9311 | emit_insn (gen_rep_stossi (destreg, countreg2, zeroreg, | |
9312 | destreg, countreg2)); | |
9313 | } | |
9314 | ||
9315 | if (label) | |
9316 | { | |
9317 | emit_label (label); | |
9318 | LABEL_NUSES (label) = 1; | |
9319 | } | |
9320 | if (TARGET_64BIT && align > 4 && count != 0 && (count & 4)) | |
9321 | emit_insn (gen_strsetsi (destreg, | |
9322 | gen_rtx_SUBREG (SImode, zeroreg, 0))); | |
9323 | if (TARGET_64BIT && (align <= 4 || count == 0)) | |
9324 | { | |
9325 | rtx label = ix86_expand_aligntest (destreg, 2); | |
9326 | emit_insn (gen_strsetsi (destreg, | |
9327 | gen_rtx_SUBREG (SImode, zeroreg, 0))); | |
9328 | emit_label (label); | |
9329 | LABEL_NUSES (label) = 1; | |
9330 | } | |
9331 | if (align > 2 && count != 0 && (count & 2)) | |
9332 | emit_insn (gen_strsethi (destreg, | |
9333 | gen_rtx_SUBREG (HImode, zeroreg, 0))); | |
9334 | if (align <= 2 || count == 0) | |
9335 | { | |
9336 | rtx label = ix86_expand_aligntest (destreg, 2); | |
9337 | emit_insn (gen_strsethi (destreg, | |
9338 | gen_rtx_SUBREG (HImode, zeroreg, 0))); | |
9339 | emit_label (label); | |
9340 | LABEL_NUSES (label) = 1; | |
9341 | } | |
9342 | if (align > 1 && count != 0 && (count & 1)) | |
9343 | emit_insn (gen_strsetqi (destreg, | |
9344 | gen_rtx_SUBREG (QImode, zeroreg, 0))); | |
9345 | if (align <= 1 || count == 0) | |
9346 | { | |
9347 | rtx label = ix86_expand_aligntest (destreg, 1); | |
9348 | emit_insn (gen_strsetqi (destreg, | |
9349 | gen_rtx_SUBREG (QImode, zeroreg, 0))); | |
9350 | emit_label (label); | |
9351 | LABEL_NUSES (label) = 1; | |
9352 | } | |
9353 | } | |
9354 | return 1; | |
9355 | } | |
9356 | /* Expand strlen. */ | |
9357 | int | |
9358 | ix86_expand_strlen (out, src, eoschar, align) | |
9359 | rtx out, src, eoschar, align; | |
9360 | { | |
9361 | rtx addr, scratch1, scratch2, scratch3, scratch4; | |
9362 | ||
9363 | /* The generic case of strlen expander is long. Avoid it's | |
9364 | expanding unless TARGET_INLINE_ALL_STRINGOPS. */ | |
9365 | ||
9366 | if (TARGET_UNROLL_STRLEN && eoschar == const0_rtx && optimize > 1 | |
9367 | && !TARGET_INLINE_ALL_STRINGOPS | |
9368 | && !optimize_size | |
9369 | && (GET_CODE (align) != CONST_INT || INTVAL (align) < 4)) | |
9370 | return 0; | |
9371 | ||
9372 | addr = force_reg (Pmode, XEXP (src, 0)); | |
9373 | scratch1 = gen_reg_rtx (Pmode); | |
9374 | ||
9375 | if (TARGET_UNROLL_STRLEN && eoschar == const0_rtx && optimize > 1 | |
9376 | && !optimize_size) | |
9377 | { | |
9378 | /* Well it seems that some optimizer does not combine a call like | |
9379 | foo(strlen(bar), strlen(bar)); | |
9380 | when the move and the subtraction is done here. It does calculate | |
9381 | the length just once when these instructions are done inside of | |
9382 | output_strlen_unroll(). But I think since &bar[strlen(bar)] is | |
9383 | often used and I use one fewer register for the lifetime of | |
9384 | output_strlen_unroll() this is better. */ | |
9385 | ||
9386 | emit_move_insn (out, addr); | |
9387 | ||
9388 | ix86_expand_strlensi_unroll_1 (out, align); | |
9389 | ||
9390 | /* strlensi_unroll_1 returns the address of the zero at the end of | |
9391 | the string, like memchr(), so compute the length by subtracting | |
9392 | the start address. */ | |
9393 | if (TARGET_64BIT) | |
9394 | emit_insn (gen_subdi3 (out, out, addr)); | |
9395 | else | |
9396 | emit_insn (gen_subsi3 (out, out, addr)); | |
9397 | } | |
9398 | else | |
9399 | { | |
9400 | scratch2 = gen_reg_rtx (Pmode); | |
9401 | scratch3 = gen_reg_rtx (Pmode); | |
9402 | scratch4 = force_reg (Pmode, constm1_rtx); | |
9403 | ||
9404 | emit_move_insn (scratch3, addr); | |
9405 | eoschar = force_reg (QImode, eoschar); | |
9406 | ||
9407 | emit_insn (gen_cld ()); | |
9408 | if (TARGET_64BIT) | |
9409 | { | |
9410 | emit_insn (gen_strlenqi_rex_1 (scratch1, scratch3, eoschar, | |
9411 | align, scratch4, scratch3)); | |
9412 | emit_insn (gen_one_cmpldi2 (scratch2, scratch1)); | |
9413 | emit_insn (gen_adddi3 (out, scratch2, constm1_rtx)); | |
9414 | } | |
9415 | else | |
9416 | { | |
9417 | emit_insn (gen_strlenqi_1 (scratch1, scratch3, eoschar, | |
9418 | align, scratch4, scratch3)); | |
9419 | emit_insn (gen_one_cmplsi2 (scratch2, scratch1)); | |
9420 | emit_insn (gen_addsi3 (out, scratch2, constm1_rtx)); | |
9421 | } | |
9422 | } | |
9423 | return 1; | |
9424 | } | |
9425 | ||
e075ae69 RH |
9426 | /* Expand the appropriate insns for doing strlen if not just doing |
9427 | repnz; scasb | |
9428 | ||
9429 | out = result, initialized with the start address | |
9430 | align_rtx = alignment of the address. | |
9431 | scratch = scratch register, initialized with the startaddress when | |
77ebd435 | 9432 | not aligned, otherwise undefined |
3f803cd9 SC |
9433 | |
9434 | This is just the body. It needs the initialisations mentioned above and | |
9435 | some address computing at the end. These things are done in i386.md. */ | |
9436 | ||
0945b39d JH |
9437 | static void |
9438 | ix86_expand_strlensi_unroll_1 (out, align_rtx) | |
9439 | rtx out, align_rtx; | |
3f803cd9 | 9440 | { |
e075ae69 RH |
9441 | int align; |
9442 | rtx tmp; | |
9443 | rtx align_2_label = NULL_RTX; | |
9444 | rtx align_3_label = NULL_RTX; | |
9445 | rtx align_4_label = gen_label_rtx (); | |
9446 | rtx end_0_label = gen_label_rtx (); | |
e075ae69 | 9447 | rtx mem; |
e2e52e1b | 9448 | rtx tmpreg = gen_reg_rtx (SImode); |
0945b39d | 9449 | rtx scratch = gen_reg_rtx (SImode); |
e075ae69 RH |
9450 | |
9451 | align = 0; | |
9452 | if (GET_CODE (align_rtx) == CONST_INT) | |
9453 | align = INTVAL (align_rtx); | |
3f803cd9 | 9454 | |
e9a25f70 | 9455 | /* Loop to check 1..3 bytes for null to get an aligned pointer. */ |
3f803cd9 | 9456 | |
e9a25f70 | 9457 | /* Is there a known alignment and is it less than 4? */ |
e075ae69 | 9458 | if (align < 4) |
3f803cd9 | 9459 | { |
0945b39d JH |
9460 | rtx scratch1 = gen_reg_rtx (Pmode); |
9461 | emit_move_insn (scratch1, out); | |
e9a25f70 | 9462 | /* Is there a known alignment and is it not 2? */ |
e075ae69 | 9463 | if (align != 2) |
3f803cd9 | 9464 | { |
e075ae69 RH |
9465 | align_3_label = gen_label_rtx (); /* Label when aligned to 3-byte */ |
9466 | align_2_label = gen_label_rtx (); /* Label when aligned to 2-byte */ | |
9467 | ||
9468 | /* Leave just the 3 lower bits. */ | |
0945b39d | 9469 | align_rtx = expand_binop (Pmode, and_optab, scratch1, GEN_INT (3), |
e075ae69 RH |
9470 | NULL_RTX, 0, OPTAB_WIDEN); |
9471 | ||
9076b9c1 | 9472 | emit_cmp_and_jump_insns (align_rtx, const0_rtx, EQ, NULL, |
d43e0b7d | 9473 | Pmode, 1, align_4_label); |
9076b9c1 | 9474 | emit_cmp_and_jump_insns (align_rtx, GEN_INT (2), EQ, NULL, |
d43e0b7d | 9475 | Pmode, 1, align_2_label); |
9076b9c1 | 9476 | emit_cmp_and_jump_insns (align_rtx, GEN_INT (2), GTU, NULL, |
d43e0b7d | 9477 | Pmode, 1, align_3_label); |
3f803cd9 SC |
9478 | } |
9479 | else | |
9480 | { | |
e9a25f70 JL |
9481 | /* Since the alignment is 2, we have to check 2 or 0 bytes; |
9482 | check if is aligned to 4 - byte. */ | |
e9a25f70 | 9483 | |
0945b39d | 9484 | align_rtx = expand_binop (Pmode, and_optab, scratch1, GEN_INT (2), |
e075ae69 RH |
9485 | NULL_RTX, 0, OPTAB_WIDEN); |
9486 | ||
9076b9c1 | 9487 | emit_cmp_and_jump_insns (align_rtx, const0_rtx, EQ, NULL, |
d43e0b7d | 9488 | Pmode, 1, align_4_label); |
3f803cd9 SC |
9489 | } |
9490 | ||
e075ae69 | 9491 | mem = gen_rtx_MEM (QImode, out); |
e9a25f70 | 9492 | |
e075ae69 | 9493 | /* Now compare the bytes. */ |
e9a25f70 | 9494 | |
0f290768 | 9495 | /* Compare the first n unaligned byte on a byte per byte basis. */ |
9076b9c1 | 9496 | emit_cmp_and_jump_insns (mem, const0_rtx, EQ, NULL, |
d43e0b7d | 9497 | QImode, 1, end_0_label); |
3f803cd9 | 9498 | |
0f290768 | 9499 | /* Increment the address. */ |
0945b39d JH |
9500 | if (TARGET_64BIT) |
9501 | emit_insn (gen_adddi3 (out, out, const1_rtx)); | |
9502 | else | |
9503 | emit_insn (gen_addsi3 (out, out, const1_rtx)); | |
e9a25f70 | 9504 | |
e075ae69 RH |
9505 | /* Not needed with an alignment of 2 */ |
9506 | if (align != 2) | |
9507 | { | |
9508 | emit_label (align_2_label); | |
3f803cd9 | 9509 | |
d43e0b7d RK |
9510 | emit_cmp_and_jump_insns (mem, const0_rtx, EQ, NULL, QImode, 1, |
9511 | end_0_label); | |
e075ae69 | 9512 | |
0945b39d JH |
9513 | if (TARGET_64BIT) |
9514 | emit_insn (gen_adddi3 (out, out, const1_rtx)); | |
9515 | else | |
9516 | emit_insn (gen_addsi3 (out, out, const1_rtx)); | |
e075ae69 RH |
9517 | |
9518 | emit_label (align_3_label); | |
9519 | } | |
9520 | ||
d43e0b7d RK |
9521 | emit_cmp_and_jump_insns (mem, const0_rtx, EQ, NULL, QImode, 1, |
9522 | end_0_label); | |
e075ae69 | 9523 | |
0945b39d JH |
9524 | if (TARGET_64BIT) |
9525 | emit_insn (gen_adddi3 (out, out, const1_rtx)); | |
9526 | else | |
9527 | emit_insn (gen_addsi3 (out, out, const1_rtx)); | |
3f803cd9 SC |
9528 | } |
9529 | ||
e075ae69 RH |
9530 | /* Generate loop to check 4 bytes at a time. It is not a good idea to |
9531 | align this loop. It gives only huge programs, but does not help to | |
9532 | speed up. */ | |
9533 | emit_label (align_4_label); | |
3f803cd9 | 9534 | |
e075ae69 RH |
9535 | mem = gen_rtx_MEM (SImode, out); |
9536 | emit_move_insn (scratch, mem); | |
0945b39d JH |
9537 | if (TARGET_64BIT) |
9538 | emit_insn (gen_adddi3 (out, out, GEN_INT (4))); | |
9539 | else | |
9540 | emit_insn (gen_addsi3 (out, out, GEN_INT (4))); | |
e075ae69 | 9541 | |
e2e52e1b JH |
9542 | /* This formula yields a nonzero result iff one of the bytes is zero. |
9543 | This saves three branches inside loop and many cycles. */ | |
9544 | ||
9545 | emit_insn (gen_addsi3 (tmpreg, scratch, GEN_INT (-0x01010101))); | |
9546 | emit_insn (gen_one_cmplsi2 (scratch, scratch)); | |
9547 | emit_insn (gen_andsi3 (tmpreg, tmpreg, scratch)); | |
7471a1f0 AO |
9548 | emit_insn (gen_andsi3 (tmpreg, tmpreg, |
9549 | GEN_INT (trunc_int_for_mode | |
9550 | (0x80808080, SImode)))); | |
d43e0b7d RK |
9551 | emit_cmp_and_jump_insns (tmpreg, const0_rtx, EQ, 0, SImode, 1, |
9552 | align_4_label); | |
e2e52e1b JH |
9553 | |
9554 | if (TARGET_CMOVE) | |
9555 | { | |
9556 | rtx reg = gen_reg_rtx (SImode); | |
0945b39d | 9557 | rtx reg2 = gen_reg_rtx (Pmode); |
e2e52e1b JH |
9558 | emit_move_insn (reg, tmpreg); |
9559 | emit_insn (gen_lshrsi3 (reg, reg, GEN_INT (16))); | |
9560 | ||
0f290768 | 9561 | /* If zero is not in the first two bytes, move two bytes forward. */ |
16189740 | 9562 | emit_insn (gen_testsi_ccno_1 (tmpreg, GEN_INT (0x8080))); |
e2e52e1b JH |
9563 | tmp = gen_rtx_REG (CCNOmode, FLAGS_REG); |
9564 | tmp = gen_rtx_EQ (VOIDmode, tmp, const0_rtx); | |
9565 | emit_insn (gen_rtx_SET (VOIDmode, tmpreg, | |
9566 | gen_rtx_IF_THEN_ELSE (SImode, tmp, | |
77ebd435 AJ |
9567 | reg, |
9568 | tmpreg))); | |
e2e52e1b | 9569 | /* Emit lea manually to avoid clobbering of flags. */ |
0945b39d JH |
9570 | emit_insn (gen_rtx_SET (SImode, reg2, |
9571 | gen_rtx_PLUS (Pmode, out, GEN_INT (2)))); | |
e2e52e1b JH |
9572 | |
9573 | tmp = gen_rtx_REG (CCNOmode, FLAGS_REG); | |
9574 | tmp = gen_rtx_EQ (VOIDmode, tmp, const0_rtx); | |
9575 | emit_insn (gen_rtx_SET (VOIDmode, out, | |
0945b39d | 9576 | gen_rtx_IF_THEN_ELSE (Pmode, tmp, |
a4f31c00 AJ |
9577 | reg2, |
9578 | out))); | |
e2e52e1b JH |
9579 | |
9580 | } | |
9581 | else | |
9582 | { | |
9583 | rtx end_2_label = gen_label_rtx (); | |
9584 | /* Is zero in the first two bytes? */ | |
9585 | ||
16189740 | 9586 | emit_insn (gen_testsi_ccno_1 (tmpreg, GEN_INT (0x8080))); |
e2e52e1b JH |
9587 | tmp = gen_rtx_REG (CCNOmode, FLAGS_REG); |
9588 | tmp = gen_rtx_NE (VOIDmode, tmp, const0_rtx); | |
9589 | tmp = gen_rtx_IF_THEN_ELSE (VOIDmode, tmp, | |
9590 | gen_rtx_LABEL_REF (VOIDmode, end_2_label), | |
9591 | pc_rtx); | |
9592 | tmp = emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx, tmp)); | |
9593 | JUMP_LABEL (tmp) = end_2_label; | |
9594 | ||
0f290768 | 9595 | /* Not in the first two. Move two bytes forward. */ |
e2e52e1b | 9596 | emit_insn (gen_lshrsi3 (tmpreg, tmpreg, GEN_INT (16))); |
0945b39d JH |
9597 | if (TARGET_64BIT) |
9598 | emit_insn (gen_adddi3 (out, out, GEN_INT (2))); | |
9599 | else | |
9600 | emit_insn (gen_addsi3 (out, out, GEN_INT (2))); | |
e2e52e1b JH |
9601 | |
9602 | emit_label (end_2_label); | |
9603 | ||
9604 | } | |
9605 | ||
0f290768 | 9606 | /* Avoid branch in fixing the byte. */ |
e2e52e1b | 9607 | tmpreg = gen_lowpart (QImode, tmpreg); |
7e08e190 | 9608 | emit_insn (gen_addqi3_cc (tmpreg, tmpreg, tmpreg)); |
0945b39d JH |
9609 | if (TARGET_64BIT) |
9610 | emit_insn (gen_subdi3_carry_rex64 (out, out, GEN_INT (3))); | |
9611 | else | |
9612 | emit_insn (gen_subsi3_carry (out, out, GEN_INT (3))); | |
e075ae69 RH |
9613 | |
9614 | emit_label (end_0_label); | |
9615 | } | |
9616 | \f | |
e075ae69 RH |
9617 | /* Clear stack slot assignments remembered from previous functions. |
9618 | This is called from INIT_EXPANDERS once before RTL is emitted for each | |
9619 | function. */ | |
9620 | ||
36edd3cc BS |
9621 | static void |
9622 | ix86_init_machine_status (p) | |
1526a060 | 9623 | struct function *p; |
e075ae69 | 9624 | { |
37b15744 RH |
9625 | p->machine = (struct machine_function *) |
9626 | xcalloc (1, sizeof (struct machine_function)); | |
e075ae69 RH |
9627 | } |
9628 | ||
1526a060 BS |
9629 | /* Mark machine specific bits of P for GC. */ |
9630 | static void | |
9631 | ix86_mark_machine_status (p) | |
9632 | struct function *p; | |
9633 | { | |
37b15744 | 9634 | struct machine_function *machine = p->machine; |
1526a060 BS |
9635 | enum machine_mode mode; |
9636 | int n; | |
9637 | ||
37b15744 RH |
9638 | if (! machine) |
9639 | return; | |
9640 | ||
1526a060 BS |
9641 | for (mode = VOIDmode; (int) mode < (int) MAX_MACHINE_MODE; |
9642 | mode = (enum machine_mode) ((int) mode + 1)) | |
9643 | for (n = 0; n < MAX_386_STACK_LOCALS; n++) | |
37b15744 RH |
9644 | ggc_mark_rtx (machine->stack_locals[(int) mode][n]); |
9645 | } | |
9646 | ||
9647 | static void | |
9648 | ix86_free_machine_status (p) | |
9649 | struct function *p; | |
9650 | { | |
9651 | free (p->machine); | |
9652 | p->machine = NULL; | |
1526a060 BS |
9653 | } |
9654 | ||
e075ae69 RH |
9655 | /* Return a MEM corresponding to a stack slot with mode MODE. |
9656 | Allocate a new slot if necessary. | |
9657 | ||
9658 | The RTL for a function can have several slots available: N is | |
9659 | which slot to use. */ | |
9660 | ||
9661 | rtx | |
9662 | assign_386_stack_local (mode, n) | |
9663 | enum machine_mode mode; | |
9664 | int n; | |
9665 | { | |
9666 | if (n < 0 || n >= MAX_386_STACK_LOCALS) | |
9667 | abort (); | |
9668 | ||
9669 | if (ix86_stack_locals[(int) mode][n] == NULL_RTX) | |
9670 | ix86_stack_locals[(int) mode][n] | |
9671 | = assign_stack_local (mode, GET_MODE_SIZE (mode), 0); | |
9672 | ||
9673 | return ix86_stack_locals[(int) mode][n]; | |
9674 | } | |
9675 | \f | |
9676 | /* Calculate the length of the memory address in the instruction | |
9677 | encoding. Does not include the one-byte modrm, opcode, or prefix. */ | |
9678 | ||
9679 | static int | |
9680 | memory_address_length (addr) | |
9681 | rtx addr; | |
9682 | { | |
9683 | struct ix86_address parts; | |
9684 | rtx base, index, disp; | |
9685 | int len; | |
9686 | ||
9687 | if (GET_CODE (addr) == PRE_DEC | |
0d7d98ee JH |
9688 | || GET_CODE (addr) == POST_INC |
9689 | || GET_CODE (addr) == PRE_MODIFY | |
9690 | || GET_CODE (addr) == POST_MODIFY) | |
e075ae69 | 9691 | return 0; |
3f803cd9 | 9692 | |
e075ae69 RH |
9693 | if (! ix86_decompose_address (addr, &parts)) |
9694 | abort (); | |
3f803cd9 | 9695 | |
e075ae69 RH |
9696 | base = parts.base; |
9697 | index = parts.index; | |
9698 | disp = parts.disp; | |
9699 | len = 0; | |
3f803cd9 | 9700 | |
e075ae69 RH |
9701 | /* Register Indirect. */ |
9702 | if (base && !index && !disp) | |
9703 | { | |
9704 | /* Special cases: ebp and esp need the two-byte modrm form. */ | |
9705 | if (addr == stack_pointer_rtx | |
9706 | || addr == arg_pointer_rtx | |
564d80f4 JH |
9707 | || addr == frame_pointer_rtx |
9708 | || addr == hard_frame_pointer_rtx) | |
e075ae69 | 9709 | len = 1; |
3f803cd9 | 9710 | } |
e9a25f70 | 9711 | |
e075ae69 RH |
9712 | /* Direct Addressing. */ |
9713 | else if (disp && !base && !index) | |
9714 | len = 4; | |
9715 | ||
3f803cd9 SC |
9716 | else |
9717 | { | |
e075ae69 RH |
9718 | /* Find the length of the displacement constant. */ |
9719 | if (disp) | |
9720 | { | |
9721 | if (GET_CODE (disp) == CONST_INT | |
9722 | && CONST_OK_FOR_LETTER_P (INTVAL (disp), 'K')) | |
9723 | len = 1; | |
9724 | else | |
9725 | len = 4; | |
9726 | } | |
3f803cd9 | 9727 | |
e075ae69 RH |
9728 | /* An index requires the two-byte modrm form. */ |
9729 | if (index) | |
9730 | len += 1; | |
3f803cd9 SC |
9731 | } |
9732 | ||
e075ae69 RH |
9733 | return len; |
9734 | } | |
79325812 | 9735 | |
6ef67412 JH |
9736 | /* Compute default value for "length_immediate" attribute. When SHORTFORM is set |
9737 | expect that insn have 8bit immediate alternative. */ | |
e075ae69 | 9738 | int |
6ef67412 | 9739 | ix86_attr_length_immediate_default (insn, shortform) |
e075ae69 | 9740 | rtx insn; |
6ef67412 | 9741 | int shortform; |
e075ae69 | 9742 | { |
6ef67412 JH |
9743 | int len = 0; |
9744 | int i; | |
6c698a6d | 9745 | extract_insn_cached (insn); |
6ef67412 JH |
9746 | for (i = recog_data.n_operands - 1; i >= 0; --i) |
9747 | if (CONSTANT_P (recog_data.operand[i])) | |
3071fab5 | 9748 | { |
6ef67412 | 9749 | if (len) |
3071fab5 | 9750 | abort (); |
6ef67412 JH |
9751 | if (shortform |
9752 | && GET_CODE (recog_data.operand[i]) == CONST_INT | |
9753 | && CONST_OK_FOR_LETTER_P (INTVAL (recog_data.operand[i]), 'K')) | |
9754 | len = 1; | |
9755 | else | |
9756 | { | |
9757 | switch (get_attr_mode (insn)) | |
9758 | { | |
9759 | case MODE_QI: | |
9760 | len+=1; | |
9761 | break; | |
9762 | case MODE_HI: | |
9763 | len+=2; | |
9764 | break; | |
9765 | case MODE_SI: | |
9766 | len+=4; | |
9767 | break; | |
14f73b5a JH |
9768 | /* Immediates for DImode instructions are encoded as 32bit sign extended values. */ |
9769 | case MODE_DI: | |
9770 | len+=4; | |
9771 | break; | |
6ef67412 | 9772 | default: |
c725bd79 | 9773 | fatal_insn ("unknown insn mode", insn); |
6ef67412 JH |
9774 | } |
9775 | } | |
3071fab5 | 9776 | } |
6ef67412 JH |
9777 | return len; |
9778 | } | |
9779 | /* Compute default value for "length_address" attribute. */ | |
9780 | int | |
9781 | ix86_attr_length_address_default (insn) | |
9782 | rtx insn; | |
9783 | { | |
9784 | int i; | |
6c698a6d | 9785 | extract_insn_cached (insn); |
1ccbefce RH |
9786 | for (i = recog_data.n_operands - 1; i >= 0; --i) |
9787 | if (GET_CODE (recog_data.operand[i]) == MEM) | |
e075ae69 | 9788 | { |
6ef67412 | 9789 | return memory_address_length (XEXP (recog_data.operand[i], 0)); |
e075ae69 RH |
9790 | break; |
9791 | } | |
6ef67412 | 9792 | return 0; |
3f803cd9 | 9793 | } |
e075ae69 RH |
9794 | \f |
9795 | /* Return the maximum number of instructions a cpu can issue. */ | |
b657fc39 | 9796 | |
c237e94a | 9797 | static int |
e075ae69 | 9798 | ix86_issue_rate () |
b657fc39 | 9799 | { |
e075ae69 | 9800 | switch (ix86_cpu) |
b657fc39 | 9801 | { |
e075ae69 RH |
9802 | case PROCESSOR_PENTIUM: |
9803 | case PROCESSOR_K6: | |
9804 | return 2; | |
79325812 | 9805 | |
e075ae69 | 9806 | case PROCESSOR_PENTIUMPRO: |
b4e89e2d JH |
9807 | case PROCESSOR_PENTIUM4: |
9808 | case PROCESSOR_ATHLON: | |
e075ae69 | 9809 | return 3; |
b657fc39 | 9810 | |
b657fc39 | 9811 | default: |
e075ae69 | 9812 | return 1; |
b657fc39 | 9813 | } |
b657fc39 L |
9814 | } |
9815 | ||
e075ae69 RH |
9816 | /* A subroutine of ix86_adjust_cost -- return true iff INSN reads flags set |
9817 | by DEP_INSN and nothing set by DEP_INSN. */ | |
b657fc39 | 9818 | |
e075ae69 RH |
9819 | static int |
9820 | ix86_flags_dependant (insn, dep_insn, insn_type) | |
9821 | rtx insn, dep_insn; | |
9822 | enum attr_type insn_type; | |
9823 | { | |
9824 | rtx set, set2; | |
b657fc39 | 9825 | |
e075ae69 RH |
9826 | /* Simplify the test for uninteresting insns. */ |
9827 | if (insn_type != TYPE_SETCC | |
9828 | && insn_type != TYPE_ICMOV | |
9829 | && insn_type != TYPE_FCMOV | |
9830 | && insn_type != TYPE_IBR) | |
9831 | return 0; | |
b657fc39 | 9832 | |
e075ae69 RH |
9833 | if ((set = single_set (dep_insn)) != 0) |
9834 | { | |
9835 | set = SET_DEST (set); | |
9836 | set2 = NULL_RTX; | |
9837 | } | |
9838 | else if (GET_CODE (PATTERN (dep_insn)) == PARALLEL | |
9839 | && XVECLEN (PATTERN (dep_insn), 0) == 2 | |
9840 | && GET_CODE (XVECEXP (PATTERN (dep_insn), 0, 0)) == SET | |
9841 | && GET_CODE (XVECEXP (PATTERN (dep_insn), 0, 1)) == SET) | |
9842 | { | |
9843 | set = SET_DEST (XVECEXP (PATTERN (dep_insn), 0, 0)); | |
9844 | set2 = SET_DEST (XVECEXP (PATTERN (dep_insn), 0, 0)); | |
9845 | } | |
78a0d70c ZW |
9846 | else |
9847 | return 0; | |
b657fc39 | 9848 | |
78a0d70c ZW |
9849 | if (GET_CODE (set) != REG || REGNO (set) != FLAGS_REG) |
9850 | return 0; | |
b657fc39 | 9851 | |
f5143c46 | 9852 | /* This test is true if the dependent insn reads the flags but |
78a0d70c ZW |
9853 | not any other potentially set register. */ |
9854 | if (!reg_overlap_mentioned_p (set, PATTERN (insn))) | |
9855 | return 0; | |
9856 | ||
9857 | if (set2 && reg_overlap_mentioned_p (set2, PATTERN (insn))) | |
9858 | return 0; | |
9859 | ||
9860 | return 1; | |
e075ae69 | 9861 | } |
b657fc39 | 9862 | |
e075ae69 RH |
9863 | /* A subroutine of ix86_adjust_cost -- return true iff INSN has a memory |
9864 | address with operands set by DEP_INSN. */ | |
9865 | ||
9866 | static int | |
9867 | ix86_agi_dependant (insn, dep_insn, insn_type) | |
9868 | rtx insn, dep_insn; | |
9869 | enum attr_type insn_type; | |
9870 | { | |
9871 | rtx addr; | |
9872 | ||
6ad48e84 JH |
9873 | if (insn_type == TYPE_LEA |
9874 | && TARGET_PENTIUM) | |
5fbdde42 RH |
9875 | { |
9876 | addr = PATTERN (insn); | |
9877 | if (GET_CODE (addr) == SET) | |
9878 | ; | |
9879 | else if (GET_CODE (addr) == PARALLEL | |
9880 | && GET_CODE (XVECEXP (addr, 0, 0)) == SET) | |
9881 | addr = XVECEXP (addr, 0, 0); | |
9882 | else | |
9883 | abort (); | |
9884 | addr = SET_SRC (addr); | |
9885 | } | |
e075ae69 RH |
9886 | else |
9887 | { | |
9888 | int i; | |
6c698a6d | 9889 | extract_insn_cached (insn); |
1ccbefce RH |
9890 | for (i = recog_data.n_operands - 1; i >= 0; --i) |
9891 | if (GET_CODE (recog_data.operand[i]) == MEM) | |
e075ae69 | 9892 | { |
1ccbefce | 9893 | addr = XEXP (recog_data.operand[i], 0); |
e075ae69 RH |
9894 | goto found; |
9895 | } | |
9896 | return 0; | |
9897 | found:; | |
b657fc39 L |
9898 | } |
9899 | ||
e075ae69 | 9900 | return modified_in_p (addr, dep_insn); |
b657fc39 | 9901 | } |
a269a03c | 9902 | |
c237e94a | 9903 | static int |
e075ae69 | 9904 | ix86_adjust_cost (insn, link, dep_insn, cost) |
a269a03c JC |
9905 | rtx insn, link, dep_insn; |
9906 | int cost; | |
9907 | { | |
e075ae69 | 9908 | enum attr_type insn_type, dep_insn_type; |
6ad48e84 | 9909 | enum attr_memory memory, dep_memory; |
e075ae69 | 9910 | rtx set, set2; |
9b00189f | 9911 | int dep_insn_code_number; |
a269a03c | 9912 | |
309ada50 | 9913 | /* Anti and output depenancies have zero cost on all CPUs. */ |
e075ae69 | 9914 | if (REG_NOTE_KIND (link) != 0) |
309ada50 | 9915 | return 0; |
a269a03c | 9916 | |
9b00189f JH |
9917 | dep_insn_code_number = recog_memoized (dep_insn); |
9918 | ||
e075ae69 | 9919 | /* If we can't recognize the insns, we can't really do anything. */ |
9b00189f | 9920 | if (dep_insn_code_number < 0 || recog_memoized (insn) < 0) |
e075ae69 | 9921 | return cost; |
a269a03c | 9922 | |
1c71e60e JH |
9923 | insn_type = get_attr_type (insn); |
9924 | dep_insn_type = get_attr_type (dep_insn); | |
9b00189f | 9925 | |
a269a03c JC |
9926 | switch (ix86_cpu) |
9927 | { | |
9928 | case PROCESSOR_PENTIUM: | |
e075ae69 RH |
9929 | /* Address Generation Interlock adds a cycle of latency. */ |
9930 | if (ix86_agi_dependant (insn, dep_insn, insn_type)) | |
9931 | cost += 1; | |
9932 | ||
9933 | /* ??? Compares pair with jump/setcc. */ | |
9934 | if (ix86_flags_dependant (insn, dep_insn, insn_type)) | |
9935 | cost = 0; | |
9936 | ||
9937 | /* Floating point stores require value to be ready one cycle ealier. */ | |
0f290768 | 9938 | if (insn_type == TYPE_FMOV |
e075ae69 RH |
9939 | && get_attr_memory (insn) == MEMORY_STORE |
9940 | && !ix86_agi_dependant (insn, dep_insn, insn_type)) | |
9941 | cost += 1; | |
9942 | break; | |
a269a03c | 9943 | |
e075ae69 | 9944 | case PROCESSOR_PENTIUMPRO: |
6ad48e84 JH |
9945 | memory = get_attr_memory (insn); |
9946 | dep_memory = get_attr_memory (dep_insn); | |
9947 | ||
0f290768 | 9948 | /* Since we can't represent delayed latencies of load+operation, |
e075ae69 RH |
9949 | increase the cost here for non-imov insns. */ |
9950 | if (dep_insn_type != TYPE_IMOV | |
6ad48e84 JH |
9951 | && dep_insn_type != TYPE_FMOV |
9952 | && (dep_memory == MEMORY_LOAD || dep_memory == MEMORY_BOTH)) | |
e075ae69 RH |
9953 | cost += 1; |
9954 | ||
9955 | /* INT->FP conversion is expensive. */ | |
9956 | if (get_attr_fp_int_src (dep_insn)) | |
9957 | cost += 5; | |
9958 | ||
9959 | /* There is one cycle extra latency between an FP op and a store. */ | |
9960 | if (insn_type == TYPE_FMOV | |
9961 | && (set = single_set (dep_insn)) != NULL_RTX | |
9962 | && (set2 = single_set (insn)) != NULL_RTX | |
9963 | && rtx_equal_p (SET_DEST (set), SET_SRC (set2)) | |
9964 | && GET_CODE (SET_DEST (set2)) == MEM) | |
9965 | cost += 1; | |
6ad48e84 JH |
9966 | |
9967 | /* Show ability of reorder buffer to hide latency of load by executing | |
9968 | in parallel with previous instruction in case | |
9969 | previous instruction is not needed to compute the address. */ | |
9970 | if ((memory == MEMORY_LOAD || memory == MEMORY_BOTH) | |
9971 | && !ix86_agi_dependant (insn, dep_insn, insn_type)) | |
9972 | { | |
9973 | /* Claim moves to take one cycle, as core can issue one load | |
9974 | at time and the next load can start cycle later. */ | |
9975 | if (dep_insn_type == TYPE_IMOV | |
9976 | || dep_insn_type == TYPE_FMOV) | |
9977 | cost = 1; | |
9978 | else if (cost > 1) | |
9979 | cost--; | |
9980 | } | |
e075ae69 | 9981 | break; |
a269a03c | 9982 | |
e075ae69 | 9983 | case PROCESSOR_K6: |
6ad48e84 JH |
9984 | memory = get_attr_memory (insn); |
9985 | dep_memory = get_attr_memory (dep_insn); | |
e075ae69 RH |
9986 | /* The esp dependency is resolved before the instruction is really |
9987 | finished. */ | |
9988 | if ((insn_type == TYPE_PUSH || insn_type == TYPE_POP) | |
9989 | && (dep_insn_type == TYPE_PUSH || dep_insn_type == TYPE_POP)) | |
9990 | return 1; | |
a269a03c | 9991 | |
0f290768 | 9992 | /* Since we can't represent delayed latencies of load+operation, |
e075ae69 | 9993 | increase the cost here for non-imov insns. */ |
6ad48e84 | 9994 | if (dep_memory == MEMORY_LOAD || dep_memory == MEMORY_BOTH) |
e075ae69 RH |
9995 | cost += (dep_insn_type != TYPE_IMOV) ? 2 : 1; |
9996 | ||
9997 | /* INT->FP conversion is expensive. */ | |
9998 | if (get_attr_fp_int_src (dep_insn)) | |
9999 | cost += 5; | |
6ad48e84 JH |
10000 | |
10001 | /* Show ability of reorder buffer to hide latency of load by executing | |
10002 | in parallel with previous instruction in case | |
10003 | previous instruction is not needed to compute the address. */ | |
10004 | if ((memory == MEMORY_LOAD || memory == MEMORY_BOTH) | |
10005 | && !ix86_agi_dependant (insn, dep_insn, insn_type)) | |
10006 | { | |
10007 | /* Claim moves to take one cycle, as core can issue one load | |
10008 | at time and the next load can start cycle later. */ | |
10009 | if (dep_insn_type == TYPE_IMOV | |
10010 | || dep_insn_type == TYPE_FMOV) | |
10011 | cost = 1; | |
10012 | else if (cost > 2) | |
10013 | cost -= 2; | |
10014 | else | |
10015 | cost = 1; | |
10016 | } | |
a14003ee | 10017 | break; |
e075ae69 | 10018 | |
309ada50 | 10019 | case PROCESSOR_ATHLON: |
6ad48e84 JH |
10020 | memory = get_attr_memory (insn); |
10021 | dep_memory = get_attr_memory (dep_insn); | |
10022 | ||
10023 | if (dep_memory == MEMORY_LOAD || dep_memory == MEMORY_BOTH) | |
0b5107cf JH |
10024 | { |
10025 | if (dep_insn_type == TYPE_IMOV || dep_insn_type == TYPE_FMOV) | |
10026 | cost += 2; | |
10027 | else | |
10028 | cost += 3; | |
10029 | } | |
6ad48e84 JH |
10030 | /* Show ability of reorder buffer to hide latency of load by executing |
10031 | in parallel with previous instruction in case | |
10032 | previous instruction is not needed to compute the address. */ | |
10033 | if ((memory == MEMORY_LOAD || memory == MEMORY_BOTH) | |
10034 | && !ix86_agi_dependant (insn, dep_insn, insn_type)) | |
10035 | { | |
10036 | /* Claim moves to take one cycle, as core can issue one load | |
10037 | at time and the next load can start cycle later. */ | |
10038 | if (dep_insn_type == TYPE_IMOV | |
10039 | || dep_insn_type == TYPE_FMOV) | |
10040 | cost = 0; | |
10041 | else if (cost >= 3) | |
10042 | cost -= 3; | |
10043 | else | |
10044 | cost = 0; | |
10045 | } | |
309ada50 | 10046 | |
a269a03c | 10047 | default: |
a269a03c JC |
10048 | break; |
10049 | } | |
10050 | ||
10051 | return cost; | |
10052 | } | |
0a726ef1 | 10053 | |
e075ae69 RH |
10054 | static union |
10055 | { | |
10056 | struct ppro_sched_data | |
10057 | { | |
10058 | rtx decode[3]; | |
10059 | int issued_this_cycle; | |
10060 | } ppro; | |
10061 | } ix86_sched_data; | |
0a726ef1 | 10062 | |
e075ae69 RH |
10063 | static int |
10064 | ix86_safe_length (insn) | |
10065 | rtx insn; | |
10066 | { | |
10067 | if (recog_memoized (insn) >= 0) | |
10068 | return get_attr_length(insn); | |
10069 | else | |
10070 | return 128; | |
10071 | } | |
0a726ef1 | 10072 | |
e075ae69 RH |
10073 | static int |
10074 | ix86_safe_length_prefix (insn) | |
10075 | rtx insn; | |
10076 | { | |
10077 | if (recog_memoized (insn) >= 0) | |
10078 | return get_attr_length(insn); | |
10079 | else | |
10080 | return 0; | |
10081 | } | |
10082 | ||
10083 | static enum attr_memory | |
10084 | ix86_safe_memory (insn) | |
10085 | rtx insn; | |
10086 | { | |
10087 | if (recog_memoized (insn) >= 0) | |
10088 | return get_attr_memory(insn); | |
10089 | else | |
10090 | return MEMORY_UNKNOWN; | |
10091 | } | |
0a726ef1 | 10092 | |
e075ae69 RH |
10093 | static enum attr_pent_pair |
10094 | ix86_safe_pent_pair (insn) | |
10095 | rtx insn; | |
10096 | { | |
10097 | if (recog_memoized (insn) >= 0) | |
10098 | return get_attr_pent_pair(insn); | |
10099 | else | |
10100 | return PENT_PAIR_NP; | |
10101 | } | |
0a726ef1 | 10102 | |
e075ae69 RH |
10103 | static enum attr_ppro_uops |
10104 | ix86_safe_ppro_uops (insn) | |
10105 | rtx insn; | |
10106 | { | |
10107 | if (recog_memoized (insn) >= 0) | |
10108 | return get_attr_ppro_uops (insn); | |
10109 | else | |
10110 | return PPRO_UOPS_MANY; | |
10111 | } | |
0a726ef1 | 10112 | |
e075ae69 RH |
10113 | static void |
10114 | ix86_dump_ppro_packet (dump) | |
10115 | FILE *dump; | |
0a726ef1 | 10116 | { |
e075ae69 | 10117 | if (ix86_sched_data.ppro.decode[0]) |
0a726ef1 | 10118 | { |
e075ae69 RH |
10119 | fprintf (dump, "PPRO packet: %d", |
10120 | INSN_UID (ix86_sched_data.ppro.decode[0])); | |
10121 | if (ix86_sched_data.ppro.decode[1]) | |
10122 | fprintf (dump, " %d", INSN_UID (ix86_sched_data.ppro.decode[1])); | |
10123 | if (ix86_sched_data.ppro.decode[2]) | |
10124 | fprintf (dump, " %d", INSN_UID (ix86_sched_data.ppro.decode[2])); | |
10125 | fputc ('\n', dump); | |
10126 | } | |
10127 | } | |
0a726ef1 | 10128 | |
e075ae69 | 10129 | /* We're beginning a new block. Initialize data structures as necessary. */ |
0a726ef1 | 10130 | |
c237e94a ZW |
10131 | static void |
10132 | ix86_sched_init (dump, sched_verbose, veclen) | |
e075ae69 RH |
10133 | FILE *dump ATTRIBUTE_UNUSED; |
10134 | int sched_verbose ATTRIBUTE_UNUSED; | |
c237e94a | 10135 | int veclen ATTRIBUTE_UNUSED; |
e075ae69 RH |
10136 | { |
10137 | memset (&ix86_sched_data, 0, sizeof (ix86_sched_data)); | |
10138 | } | |
10139 | ||
10140 | /* Shift INSN to SLOT, and shift everything else down. */ | |
10141 | ||
10142 | static void | |
10143 | ix86_reorder_insn (insnp, slot) | |
10144 | rtx *insnp, *slot; | |
10145 | { | |
10146 | if (insnp != slot) | |
10147 | { | |
10148 | rtx insn = *insnp; | |
0f290768 | 10149 | do |
e075ae69 RH |
10150 | insnp[0] = insnp[1]; |
10151 | while (++insnp != slot); | |
10152 | *insnp = insn; | |
0a726ef1 | 10153 | } |
e075ae69 RH |
10154 | } |
10155 | ||
10156 | /* Find an instruction with given pairability and minimal amount of cycles | |
10157 | lost by the fact that the CPU waits for both pipelines to finish before | |
10158 | reading next instructions. Also take care that both instructions together | |
10159 | can not exceed 7 bytes. */ | |
10160 | ||
10161 | static rtx * | |
10162 | ix86_pent_find_pair (e_ready, ready, type, first) | |
10163 | rtx *e_ready; | |
10164 | rtx *ready; | |
10165 | enum attr_pent_pair type; | |
10166 | rtx first; | |
10167 | { | |
10168 | int mincycles, cycles; | |
10169 | enum attr_pent_pair tmp; | |
10170 | enum attr_memory memory; | |
10171 | rtx *insnp, *bestinsnp = NULL; | |
0a726ef1 | 10172 | |
e075ae69 RH |
10173 | if (ix86_safe_length (first) > 7 + ix86_safe_length_prefix (first)) |
10174 | return NULL; | |
0a726ef1 | 10175 | |
e075ae69 RH |
10176 | memory = ix86_safe_memory (first); |
10177 | cycles = result_ready_cost (first); | |
10178 | mincycles = INT_MAX; | |
10179 | ||
10180 | for (insnp = e_ready; insnp >= ready && mincycles; --insnp) | |
10181 | if ((tmp = ix86_safe_pent_pair (*insnp)) == type | |
10182 | && ix86_safe_length (*insnp) <= 7 + ix86_safe_length_prefix (*insnp)) | |
6ec6d558 | 10183 | { |
e075ae69 RH |
10184 | enum attr_memory second_memory; |
10185 | int secondcycles, currentcycles; | |
10186 | ||
10187 | second_memory = ix86_safe_memory (*insnp); | |
10188 | secondcycles = result_ready_cost (*insnp); | |
10189 | currentcycles = abs (cycles - secondcycles); | |
10190 | ||
10191 | if (secondcycles >= 1 && cycles >= 1) | |
6ec6d558 | 10192 | { |
e075ae69 RH |
10193 | /* Two read/modify/write instructions together takes two |
10194 | cycles longer. */ | |
10195 | if (memory == MEMORY_BOTH && second_memory == MEMORY_BOTH) | |
10196 | currentcycles += 2; | |
0f290768 | 10197 | |
e075ae69 RH |
10198 | /* Read modify/write instruction followed by read/modify |
10199 | takes one cycle longer. */ | |
10200 | if (memory == MEMORY_BOTH && second_memory == MEMORY_LOAD | |
10201 | && tmp != PENT_PAIR_UV | |
10202 | && ix86_safe_pent_pair (first) != PENT_PAIR_UV) | |
10203 | currentcycles += 1; | |
6ec6d558 | 10204 | } |
e075ae69 RH |
10205 | if (currentcycles < mincycles) |
10206 | bestinsnp = insnp, mincycles = currentcycles; | |
6ec6d558 | 10207 | } |
0a726ef1 | 10208 | |
e075ae69 RH |
10209 | return bestinsnp; |
10210 | } | |
10211 | ||
78a0d70c | 10212 | /* Subroutines of ix86_sched_reorder. */ |
e075ae69 | 10213 | |
c6991660 | 10214 | static void |
78a0d70c | 10215 | ix86_sched_reorder_pentium (ready, e_ready) |
e075ae69 | 10216 | rtx *ready; |
78a0d70c | 10217 | rtx *e_ready; |
e075ae69 | 10218 | { |
78a0d70c | 10219 | enum attr_pent_pair pair1, pair2; |
e075ae69 | 10220 | rtx *insnp; |
e075ae69 | 10221 | |
78a0d70c ZW |
10222 | /* This wouldn't be necessary if Haifa knew that static insn ordering |
10223 | is important to which pipe an insn is issued to. So we have to make | |
10224 | some minor rearrangements. */ | |
e075ae69 | 10225 | |
78a0d70c ZW |
10226 | pair1 = ix86_safe_pent_pair (*e_ready); |
10227 | ||
10228 | /* If the first insn is non-pairable, let it be. */ | |
10229 | if (pair1 == PENT_PAIR_NP) | |
10230 | return; | |
10231 | ||
10232 | pair2 = PENT_PAIR_NP; | |
10233 | insnp = 0; | |
10234 | ||
10235 | /* If the first insn is UV or PV pairable, search for a PU | |
10236 | insn to go with. */ | |
10237 | if (pair1 == PENT_PAIR_UV || pair1 == PENT_PAIR_PV) | |
e075ae69 | 10238 | { |
78a0d70c ZW |
10239 | insnp = ix86_pent_find_pair (e_ready-1, ready, |
10240 | PENT_PAIR_PU, *e_ready); | |
10241 | if (insnp) | |
10242 | pair2 = PENT_PAIR_PU; | |
10243 | } | |
e075ae69 | 10244 | |
78a0d70c ZW |
10245 | /* If the first insn is PU or UV pairable, search for a PV |
10246 | insn to go with. */ | |
10247 | if (pair2 == PENT_PAIR_NP | |
10248 | && (pair1 == PENT_PAIR_PU || pair1 == PENT_PAIR_UV)) | |
10249 | { | |
10250 | insnp = ix86_pent_find_pair (e_ready-1, ready, | |
10251 | PENT_PAIR_PV, *e_ready); | |
10252 | if (insnp) | |
10253 | pair2 = PENT_PAIR_PV; | |
10254 | } | |
e075ae69 | 10255 | |
78a0d70c ZW |
10256 | /* If the first insn is pairable, search for a UV |
10257 | insn to go with. */ | |
10258 | if (pair2 == PENT_PAIR_NP) | |
10259 | { | |
10260 | insnp = ix86_pent_find_pair (e_ready-1, ready, | |
10261 | PENT_PAIR_UV, *e_ready); | |
10262 | if (insnp) | |
10263 | pair2 = PENT_PAIR_UV; | |
10264 | } | |
e075ae69 | 10265 | |
78a0d70c ZW |
10266 | if (pair2 == PENT_PAIR_NP) |
10267 | return; | |
e075ae69 | 10268 | |
78a0d70c ZW |
10269 | /* Found something! Decide if we need to swap the order. */ |
10270 | if (pair1 == PENT_PAIR_PV || pair2 == PENT_PAIR_PU | |
10271 | || (pair1 == PENT_PAIR_UV && pair2 == PENT_PAIR_UV | |
10272 | && ix86_safe_memory (*e_ready) == MEMORY_BOTH | |
10273 | && ix86_safe_memory (*insnp) == MEMORY_LOAD)) | |
10274 | ix86_reorder_insn (insnp, e_ready); | |
10275 | else | |
10276 | ix86_reorder_insn (insnp, e_ready - 1); | |
10277 | } | |
e075ae69 | 10278 | |
c6991660 | 10279 | static void |
78a0d70c ZW |
10280 | ix86_sched_reorder_ppro (ready, e_ready) |
10281 | rtx *ready; | |
10282 | rtx *e_ready; | |
10283 | { | |
10284 | rtx decode[3]; | |
10285 | enum attr_ppro_uops cur_uops; | |
10286 | int issued_this_cycle; | |
10287 | rtx *insnp; | |
10288 | int i; | |
e075ae69 | 10289 | |
0f290768 | 10290 | /* At this point .ppro.decode contains the state of the three |
78a0d70c | 10291 | decoders from last "cycle". That is, those insns that were |
0f290768 | 10292 | actually independent. But here we're scheduling for the |
78a0d70c ZW |
10293 | decoder, and we may find things that are decodable in the |
10294 | same cycle. */ | |
e075ae69 | 10295 | |
0f290768 | 10296 | memcpy (decode, ix86_sched_data.ppro.decode, sizeof (decode)); |
78a0d70c | 10297 | issued_this_cycle = 0; |
e075ae69 | 10298 | |
78a0d70c ZW |
10299 | insnp = e_ready; |
10300 | cur_uops = ix86_safe_ppro_uops (*insnp); | |
0a726ef1 | 10301 | |
78a0d70c ZW |
10302 | /* If the decoders are empty, and we've a complex insn at the |
10303 | head of the priority queue, let it issue without complaint. */ | |
10304 | if (decode[0] == NULL) | |
10305 | { | |
10306 | if (cur_uops == PPRO_UOPS_MANY) | |
10307 | { | |
10308 | decode[0] = *insnp; | |
10309 | goto ppro_done; | |
10310 | } | |
10311 | ||
10312 | /* Otherwise, search for a 2-4 uop unsn to issue. */ | |
10313 | while (cur_uops != PPRO_UOPS_FEW) | |
10314 | { | |
10315 | if (insnp == ready) | |
10316 | break; | |
10317 | cur_uops = ix86_safe_ppro_uops (*--insnp); | |
10318 | } | |
10319 | ||
10320 | /* If so, move it to the head of the line. */ | |
10321 | if (cur_uops == PPRO_UOPS_FEW) | |
10322 | ix86_reorder_insn (insnp, e_ready); | |
0a726ef1 | 10323 | |
78a0d70c ZW |
10324 | /* Issue the head of the queue. */ |
10325 | issued_this_cycle = 1; | |
10326 | decode[0] = *e_ready--; | |
10327 | } | |
fb693d44 | 10328 | |
78a0d70c ZW |
10329 | /* Look for simple insns to fill in the other two slots. */ |
10330 | for (i = 1; i < 3; ++i) | |
10331 | if (decode[i] == NULL) | |
10332 | { | |
10333 | if (ready >= e_ready) | |
10334 | goto ppro_done; | |
fb693d44 | 10335 | |
e075ae69 RH |
10336 | insnp = e_ready; |
10337 | cur_uops = ix86_safe_ppro_uops (*insnp); | |
78a0d70c ZW |
10338 | while (cur_uops != PPRO_UOPS_ONE) |
10339 | { | |
10340 | if (insnp == ready) | |
10341 | break; | |
10342 | cur_uops = ix86_safe_ppro_uops (*--insnp); | |
10343 | } | |
fb693d44 | 10344 | |
78a0d70c ZW |
10345 | /* Found one. Move it to the head of the queue and issue it. */ |
10346 | if (cur_uops == PPRO_UOPS_ONE) | |
e075ae69 | 10347 | { |
78a0d70c ZW |
10348 | ix86_reorder_insn (insnp, e_ready); |
10349 | decode[i] = *e_ready--; | |
10350 | issued_this_cycle++; | |
10351 | continue; | |
10352 | } | |
fb693d44 | 10353 | |
78a0d70c ZW |
10354 | /* ??? Didn't find one. Ideally, here we would do a lazy split |
10355 | of 2-uop insns, issue one and queue the other. */ | |
10356 | } | |
fb693d44 | 10357 | |
78a0d70c ZW |
10358 | ppro_done: |
10359 | if (issued_this_cycle == 0) | |
10360 | issued_this_cycle = 1; | |
10361 | ix86_sched_data.ppro.issued_this_cycle = issued_this_cycle; | |
10362 | } | |
fb693d44 | 10363 | |
0f290768 | 10364 | /* We are about to being issuing insns for this clock cycle. |
78a0d70c | 10365 | Override the default sort algorithm to better slot instructions. */ |
c237e94a ZW |
10366 | static int |
10367 | ix86_sched_reorder (dump, sched_verbose, ready, n_readyp, clock_var) | |
78a0d70c ZW |
10368 | FILE *dump ATTRIBUTE_UNUSED; |
10369 | int sched_verbose ATTRIBUTE_UNUSED; | |
10370 | rtx *ready; | |
c237e94a | 10371 | int *n_readyp; |
78a0d70c ZW |
10372 | int clock_var ATTRIBUTE_UNUSED; |
10373 | { | |
c237e94a | 10374 | int n_ready = *n_readyp; |
78a0d70c | 10375 | rtx *e_ready = ready + n_ready - 1; |
fb693d44 | 10376 | |
78a0d70c ZW |
10377 | if (n_ready < 2) |
10378 | goto out; | |
e075ae69 | 10379 | |
78a0d70c ZW |
10380 | switch (ix86_cpu) |
10381 | { | |
10382 | default: | |
10383 | break; | |
e075ae69 | 10384 | |
78a0d70c ZW |
10385 | case PROCESSOR_PENTIUM: |
10386 | ix86_sched_reorder_pentium (ready, e_ready); | |
10387 | break; | |
e075ae69 | 10388 | |
78a0d70c ZW |
10389 | case PROCESSOR_PENTIUMPRO: |
10390 | ix86_sched_reorder_ppro (ready, e_ready); | |
e075ae69 | 10391 | break; |
fb693d44 RH |
10392 | } |
10393 | ||
e075ae69 RH |
10394 | out: |
10395 | return ix86_issue_rate (); | |
10396 | } | |
fb693d44 | 10397 | |
e075ae69 RH |
10398 | /* We are about to issue INSN. Return the number of insns left on the |
10399 | ready queue that can be issued this cycle. */ | |
b222082e | 10400 | |
c237e94a | 10401 | static int |
e075ae69 RH |
10402 | ix86_variable_issue (dump, sched_verbose, insn, can_issue_more) |
10403 | FILE *dump; | |
10404 | int sched_verbose; | |
10405 | rtx insn; | |
10406 | int can_issue_more; | |
10407 | { | |
10408 | int i; | |
10409 | switch (ix86_cpu) | |
fb693d44 | 10410 | { |
e075ae69 RH |
10411 | default: |
10412 | return can_issue_more - 1; | |
fb693d44 | 10413 | |
e075ae69 RH |
10414 | case PROCESSOR_PENTIUMPRO: |
10415 | { | |
10416 | enum attr_ppro_uops uops = ix86_safe_ppro_uops (insn); | |
fb693d44 | 10417 | |
e075ae69 RH |
10418 | if (uops == PPRO_UOPS_MANY) |
10419 | { | |
10420 | if (sched_verbose) | |
10421 | ix86_dump_ppro_packet (dump); | |
10422 | ix86_sched_data.ppro.decode[0] = insn; | |
10423 | ix86_sched_data.ppro.decode[1] = NULL; | |
10424 | ix86_sched_data.ppro.decode[2] = NULL; | |
10425 | if (sched_verbose) | |
10426 | ix86_dump_ppro_packet (dump); | |
10427 | ix86_sched_data.ppro.decode[0] = NULL; | |
10428 | } | |
10429 | else if (uops == PPRO_UOPS_FEW) | |
10430 | { | |
10431 | if (sched_verbose) | |
10432 | ix86_dump_ppro_packet (dump); | |
10433 | ix86_sched_data.ppro.decode[0] = insn; | |
10434 | ix86_sched_data.ppro.decode[1] = NULL; | |
10435 | ix86_sched_data.ppro.decode[2] = NULL; | |
10436 | } | |
10437 | else | |
10438 | { | |
10439 | for (i = 0; i < 3; ++i) | |
10440 | if (ix86_sched_data.ppro.decode[i] == NULL) | |
10441 | { | |
10442 | ix86_sched_data.ppro.decode[i] = insn; | |
10443 | break; | |
10444 | } | |
10445 | if (i == 3) | |
10446 | abort (); | |
10447 | if (i == 2) | |
10448 | { | |
10449 | if (sched_verbose) | |
10450 | ix86_dump_ppro_packet (dump); | |
10451 | ix86_sched_data.ppro.decode[0] = NULL; | |
10452 | ix86_sched_data.ppro.decode[1] = NULL; | |
10453 | ix86_sched_data.ppro.decode[2] = NULL; | |
10454 | } | |
10455 | } | |
10456 | } | |
10457 | return --ix86_sched_data.ppro.issued_this_cycle; | |
10458 | } | |
fb693d44 | 10459 | } |
a7180f70 | 10460 | \f |
0e4970d7 RK |
10461 | /* Walk through INSNS and look for MEM references whose address is DSTREG or |
10462 | SRCREG and set the memory attribute to those of DSTREF and SRCREF, as | |
10463 | appropriate. */ | |
10464 | ||
10465 | void | |
10466 | ix86_set_move_mem_attrs (insns, dstref, srcref, dstreg, srcreg) | |
10467 | rtx insns; | |
10468 | rtx dstref, srcref, dstreg, srcreg; | |
10469 | { | |
10470 | rtx insn; | |
10471 | ||
10472 | for (insn = insns; insn != 0 ; insn = NEXT_INSN (insn)) | |
10473 | if (INSN_P (insn)) | |
10474 | ix86_set_move_mem_attrs_1 (PATTERN (insn), dstref, srcref, | |
10475 | dstreg, srcreg); | |
10476 | } | |
10477 | ||
10478 | /* Subroutine of above to actually do the updating by recursively walking | |
10479 | the rtx. */ | |
10480 | ||
10481 | static void | |
10482 | ix86_set_move_mem_attrs_1 (x, dstref, srcref, dstreg, srcreg) | |
10483 | rtx x; | |
10484 | rtx dstref, srcref, dstreg, srcreg; | |
10485 | { | |
10486 | enum rtx_code code = GET_CODE (x); | |
10487 | const char *format_ptr = GET_RTX_FORMAT (code); | |
10488 | int i, j; | |
10489 | ||
10490 | if (code == MEM && XEXP (x, 0) == dstreg) | |
10491 | MEM_COPY_ATTRIBUTES (x, dstref); | |
10492 | else if (code == MEM && XEXP (x, 0) == srcreg) | |
10493 | MEM_COPY_ATTRIBUTES (x, srcref); | |
10494 | ||
10495 | for (i = 0; i < GET_RTX_LENGTH (code); i++, format_ptr++) | |
10496 | { | |
10497 | if (*format_ptr == 'e') | |
10498 | ix86_set_move_mem_attrs_1 (XEXP (x, i), dstref, srcref, | |
10499 | dstreg, srcreg); | |
10500 | else if (*format_ptr == 'E') | |
10501 | for (j = XVECLEN (x, i) - 1; j >= 0; j--) | |
397be6cf | 10502 | ix86_set_move_mem_attrs_1 (XVECEXP (x, i, j), dstref, srcref, |
0e4970d7 RK |
10503 | dstreg, srcreg); |
10504 | } | |
10505 | } | |
10506 | \f | |
a7180f70 BS |
10507 | /* Compute the alignment given to a constant that is being placed in memory. |
10508 | EXP is the constant and ALIGN is the alignment that the object would | |
10509 | ordinarily have. | |
10510 | The value of this function is used instead of that alignment to align | |
10511 | the object. */ | |
10512 | ||
10513 | int | |
10514 | ix86_constant_alignment (exp, align) | |
10515 | tree exp; | |
10516 | int align; | |
10517 | { | |
10518 | if (TREE_CODE (exp) == REAL_CST) | |
10519 | { | |
10520 | if (TYPE_MODE (TREE_TYPE (exp)) == DFmode && align < 64) | |
10521 | return 64; | |
10522 | else if (ALIGN_MODE_128 (TYPE_MODE (TREE_TYPE (exp))) && align < 128) | |
10523 | return 128; | |
10524 | } | |
10525 | else if (TREE_CODE (exp) == STRING_CST && TREE_STRING_LENGTH (exp) >= 31 | |
10526 | && align < 256) | |
10527 | return 256; | |
10528 | ||
10529 | return align; | |
10530 | } | |
10531 | ||
10532 | /* Compute the alignment for a static variable. | |
10533 | TYPE is the data type, and ALIGN is the alignment that | |
10534 | the object would ordinarily have. The value of this function is used | |
10535 | instead of that alignment to align the object. */ | |
10536 | ||
10537 | int | |
10538 | ix86_data_alignment (type, align) | |
10539 | tree type; | |
10540 | int align; | |
10541 | { | |
10542 | if (AGGREGATE_TYPE_P (type) | |
10543 | && TYPE_SIZE (type) | |
10544 | && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST | |
10545 | && (TREE_INT_CST_LOW (TYPE_SIZE (type)) >= 256 | |
10546 | || TREE_INT_CST_HIGH (TYPE_SIZE (type))) && align < 256) | |
10547 | return 256; | |
10548 | ||
0d7d98ee JH |
10549 | /* x86-64 ABI requires arrays greater than 16 bytes to be aligned |
10550 | to 16byte boundary. */ | |
10551 | if (TARGET_64BIT) | |
10552 | { | |
10553 | if (AGGREGATE_TYPE_P (type) | |
10554 | && TYPE_SIZE (type) | |
10555 | && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST | |
10556 | && (TREE_INT_CST_LOW (TYPE_SIZE (type)) >= 128 | |
10557 | || TREE_INT_CST_HIGH (TYPE_SIZE (type))) && align < 128) | |
10558 | return 128; | |
10559 | } | |
10560 | ||
a7180f70 BS |
10561 | if (TREE_CODE (type) == ARRAY_TYPE) |
10562 | { | |
10563 | if (TYPE_MODE (TREE_TYPE (type)) == DFmode && align < 64) | |
10564 | return 64; | |
10565 | if (ALIGN_MODE_128 (TYPE_MODE (TREE_TYPE (type))) && align < 128) | |
10566 | return 128; | |
10567 | } | |
10568 | else if (TREE_CODE (type) == COMPLEX_TYPE) | |
10569 | { | |
0f290768 | 10570 | |
a7180f70 BS |
10571 | if (TYPE_MODE (type) == DCmode && align < 64) |
10572 | return 64; | |
10573 | if (TYPE_MODE (type) == XCmode && align < 128) | |
10574 | return 128; | |
10575 | } | |
10576 | else if ((TREE_CODE (type) == RECORD_TYPE | |
10577 | || TREE_CODE (type) == UNION_TYPE | |
10578 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
10579 | && TYPE_FIELDS (type)) | |
10580 | { | |
10581 | if (DECL_MODE (TYPE_FIELDS (type)) == DFmode && align < 64) | |
10582 | return 64; | |
10583 | if (ALIGN_MODE_128 (DECL_MODE (TYPE_FIELDS (type))) && align < 128) | |
10584 | return 128; | |
10585 | } | |
10586 | else if (TREE_CODE (type) == REAL_TYPE || TREE_CODE (type) == VECTOR_TYPE | |
10587 | || TREE_CODE (type) == INTEGER_TYPE) | |
10588 | { | |
10589 | if (TYPE_MODE (type) == DFmode && align < 64) | |
10590 | return 64; | |
10591 | if (ALIGN_MODE_128 (TYPE_MODE (type)) && align < 128) | |
10592 | return 128; | |
10593 | } | |
10594 | ||
10595 | return align; | |
10596 | } | |
10597 | ||
10598 | /* Compute the alignment for a local variable. | |
10599 | TYPE is the data type, and ALIGN is the alignment that | |
10600 | the object would ordinarily have. The value of this macro is used | |
10601 | instead of that alignment to align the object. */ | |
10602 | ||
10603 | int | |
10604 | ix86_local_alignment (type, align) | |
10605 | tree type; | |
10606 | int align; | |
10607 | { | |
0d7d98ee JH |
10608 | /* x86-64 ABI requires arrays greater than 16 bytes to be aligned |
10609 | to 16byte boundary. */ | |
10610 | if (TARGET_64BIT) | |
10611 | { | |
10612 | if (AGGREGATE_TYPE_P (type) | |
10613 | && TYPE_SIZE (type) | |
10614 | && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST | |
10615 | && (TREE_INT_CST_LOW (TYPE_SIZE (type)) >= 16 | |
10616 | || TREE_INT_CST_HIGH (TYPE_SIZE (type))) && align < 128) | |
10617 | return 128; | |
10618 | } | |
a7180f70 BS |
10619 | if (TREE_CODE (type) == ARRAY_TYPE) |
10620 | { | |
10621 | if (TYPE_MODE (TREE_TYPE (type)) == DFmode && align < 64) | |
10622 | return 64; | |
10623 | if (ALIGN_MODE_128 (TYPE_MODE (TREE_TYPE (type))) && align < 128) | |
10624 | return 128; | |
10625 | } | |
10626 | else if (TREE_CODE (type) == COMPLEX_TYPE) | |
10627 | { | |
10628 | if (TYPE_MODE (type) == DCmode && align < 64) | |
10629 | return 64; | |
10630 | if (TYPE_MODE (type) == XCmode && align < 128) | |
10631 | return 128; | |
10632 | } | |
10633 | else if ((TREE_CODE (type) == RECORD_TYPE | |
10634 | || TREE_CODE (type) == UNION_TYPE | |
10635 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
10636 | && TYPE_FIELDS (type)) | |
10637 | { | |
10638 | if (DECL_MODE (TYPE_FIELDS (type)) == DFmode && align < 64) | |
10639 | return 64; | |
10640 | if (ALIGN_MODE_128 (DECL_MODE (TYPE_FIELDS (type))) && align < 128) | |
10641 | return 128; | |
10642 | } | |
10643 | else if (TREE_CODE (type) == REAL_TYPE || TREE_CODE (type) == VECTOR_TYPE | |
10644 | || TREE_CODE (type) == INTEGER_TYPE) | |
10645 | { | |
0f290768 | 10646 | |
a7180f70 BS |
10647 | if (TYPE_MODE (type) == DFmode && align < 64) |
10648 | return 64; | |
10649 | if (ALIGN_MODE_128 (TYPE_MODE (type)) && align < 128) | |
10650 | return 128; | |
10651 | } | |
10652 | return align; | |
10653 | } | |
0ed08620 JH |
10654 | \f |
10655 | /* Emit RTL insns to initialize the variable parts of a trampoline. | |
10656 | FNADDR is an RTX for the address of the function's pure code. | |
10657 | CXT is an RTX for the static chain value for the function. */ | |
10658 | void | |
10659 | x86_initialize_trampoline (tramp, fnaddr, cxt) | |
10660 | rtx tramp, fnaddr, cxt; | |
10661 | { | |
10662 | if (!TARGET_64BIT) | |
10663 | { | |
10664 | /* Compute offset from the end of the jmp to the target function. */ | |
10665 | rtx disp = expand_binop (SImode, sub_optab, fnaddr, | |
10666 | plus_constant (tramp, 10), | |
10667 | NULL_RTX, 1, OPTAB_DIRECT); | |
10668 | emit_move_insn (gen_rtx_MEM (QImode, tramp), | |
10669 | GEN_INT (trunc_int_for_mode (0xb9, QImode))); | |
10670 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 1)), cxt); | |
10671 | emit_move_insn (gen_rtx_MEM (QImode, plus_constant (tramp, 5)), | |
10672 | GEN_INT (trunc_int_for_mode (0xe9, QImode))); | |
10673 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, 6)), disp); | |
10674 | } | |
10675 | else | |
10676 | { | |
10677 | int offset = 0; | |
10678 | /* Try to load address using shorter movl instead of movabs. | |
10679 | We may want to support movq for kernel mode, but kernel does not use | |
10680 | trampolines at the moment. */ | |
10681 | if (x86_64_zero_extended_value (fnaddr)) | |
10682 | { | |
10683 | fnaddr = copy_to_mode_reg (DImode, fnaddr); | |
10684 | emit_move_insn (gen_rtx_MEM (HImode, plus_constant (tramp, offset)), | |
10685 | GEN_INT (trunc_int_for_mode (0xbb41, HImode))); | |
10686 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (tramp, offset + 2)), | |
10687 | gen_lowpart (SImode, fnaddr)); | |
10688 | offset += 6; | |
10689 | } | |
10690 | else | |
10691 | { | |
10692 | emit_move_insn (gen_rtx_MEM (HImode, plus_constant (tramp, offset)), | |
10693 | GEN_INT (trunc_int_for_mode (0xbb49, HImode))); | |
10694 | emit_move_insn (gen_rtx_MEM (DImode, plus_constant (tramp, offset + 2)), | |
10695 | fnaddr); | |
10696 | offset += 10; | |
10697 | } | |
10698 | /* Load static chain using movabs to r10. */ | |
10699 | emit_move_insn (gen_rtx_MEM (HImode, plus_constant (tramp, offset)), | |
10700 | GEN_INT (trunc_int_for_mode (0xba49, HImode))); | |
10701 | emit_move_insn (gen_rtx_MEM (DImode, plus_constant (tramp, offset + 2)), | |
10702 | cxt); | |
10703 | offset += 10; | |
10704 | /* Jump to the r11 */ | |
10705 | emit_move_insn (gen_rtx_MEM (HImode, plus_constant (tramp, offset)), | |
10706 | GEN_INT (trunc_int_for_mode (0xff49, HImode))); | |
10707 | emit_move_insn (gen_rtx_MEM (QImode, plus_constant (tramp, offset+2)), | |
44cf5b6a | 10708 | GEN_INT (trunc_int_for_mode (0xe3, QImode))); |
0ed08620 JH |
10709 | offset += 3; |
10710 | if (offset > TRAMPOLINE_SIZE) | |
10711 | abort(); | |
10712 | } | |
10713 | } | |
eeb06b1b BS |
10714 | \f |
10715 | #define def_builtin(MASK, NAME, TYPE, CODE) \ | |
10716 | do { \ | |
10717 | if ((MASK) & target_flags) \ | |
10718 | builtin_function ((NAME), (TYPE), (CODE), BUILT_IN_MD, NULL); \ | |
10719 | } while (0) | |
bd793c65 | 10720 | |
bd793c65 BS |
10721 | struct builtin_description |
10722 | { | |
8b60264b KG |
10723 | const unsigned int mask; |
10724 | const enum insn_code icode; | |
10725 | const char *const name; | |
10726 | const enum ix86_builtins code; | |
10727 | const enum rtx_code comparison; | |
10728 | const unsigned int flag; | |
bd793c65 BS |
10729 | }; |
10730 | ||
8b60264b | 10731 | static const struct builtin_description bdesc_comi[] = |
bd793c65 | 10732 | { |
eeb06b1b BS |
10733 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comieq", IX86_BUILTIN_COMIEQSS, EQ, 0 }, |
10734 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comilt", IX86_BUILTIN_COMILTSS, LT, 0 }, | |
10735 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comile", IX86_BUILTIN_COMILESS, LE, 0 }, | |
10736 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comigt", IX86_BUILTIN_COMIGTSS, LT, 1 }, | |
10737 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comige", IX86_BUILTIN_COMIGESS, LE, 1 }, | |
10738 | { MASK_SSE, CODE_FOR_sse_comi, "__builtin_ia32_comineq", IX86_BUILTIN_COMINEQSS, NE, 0 }, | |
10739 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomieq", IX86_BUILTIN_UCOMIEQSS, EQ, 0 }, | |
10740 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomilt", IX86_BUILTIN_UCOMILTSS, LT, 0 }, | |
10741 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomile", IX86_BUILTIN_UCOMILESS, LE, 0 }, | |
10742 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomigt", IX86_BUILTIN_UCOMIGTSS, LT, 1 }, | |
10743 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomige", IX86_BUILTIN_UCOMIGESS, LE, 1 }, | |
10744 | { MASK_SSE, CODE_FOR_sse_ucomi, "__builtin_ia32_ucomineq", IX86_BUILTIN_UCOMINEQSS, NE, 0 } | |
bd793c65 BS |
10745 | }; |
10746 | ||
8b60264b | 10747 | static const struct builtin_description bdesc_2arg[] = |
bd793c65 BS |
10748 | { |
10749 | /* SSE */ | |
eeb06b1b BS |
10750 | { MASK_SSE, CODE_FOR_addv4sf3, "__builtin_ia32_addps", IX86_BUILTIN_ADDPS, 0, 0 }, |
10751 | { MASK_SSE, CODE_FOR_subv4sf3, "__builtin_ia32_subps", IX86_BUILTIN_SUBPS, 0, 0 }, | |
10752 | { MASK_SSE, CODE_FOR_mulv4sf3, "__builtin_ia32_mulps", IX86_BUILTIN_MULPS, 0, 0 }, | |
10753 | { MASK_SSE, CODE_FOR_divv4sf3, "__builtin_ia32_divps", IX86_BUILTIN_DIVPS, 0, 0 }, | |
10754 | { MASK_SSE, CODE_FOR_vmaddv4sf3, "__builtin_ia32_addss", IX86_BUILTIN_ADDSS, 0, 0 }, | |
10755 | { MASK_SSE, CODE_FOR_vmsubv4sf3, "__builtin_ia32_subss", IX86_BUILTIN_SUBSS, 0, 0 }, | |
10756 | { MASK_SSE, CODE_FOR_vmmulv4sf3, "__builtin_ia32_mulss", IX86_BUILTIN_MULSS, 0, 0 }, | |
10757 | { MASK_SSE, CODE_FOR_vmdivv4sf3, "__builtin_ia32_divss", IX86_BUILTIN_DIVSS, 0, 0 }, | |
10758 | ||
10759 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpeqps", IX86_BUILTIN_CMPEQPS, EQ, 0 }, | |
10760 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpltps", IX86_BUILTIN_CMPLTPS, LT, 0 }, | |
10761 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpleps", IX86_BUILTIN_CMPLEPS, LE, 0 }, | |
10762 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpgtps", IX86_BUILTIN_CMPGTPS, LT, 1 }, | |
10763 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpgeps", IX86_BUILTIN_CMPGEPS, LE, 1 }, | |
10764 | { MASK_SSE, CODE_FOR_maskcmpv4sf3, "__builtin_ia32_cmpunordps", IX86_BUILTIN_CMPUNORDPS, UNORDERED, 0 }, | |
10765 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpneqps", IX86_BUILTIN_CMPNEQPS, EQ, 0 }, | |
10766 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpnltps", IX86_BUILTIN_CMPNLTPS, LT, 0 }, | |
10767 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpnleps", IX86_BUILTIN_CMPNLEPS, LE, 0 }, | |
10768 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpngtps", IX86_BUILTIN_CMPNGTPS, LT, 1 }, | |
10769 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpngeps", IX86_BUILTIN_CMPNGEPS, LE, 1 }, | |
10770 | { MASK_SSE, CODE_FOR_maskncmpv4sf3, "__builtin_ia32_cmpordps", IX86_BUILTIN_CMPORDPS, UNORDERED, 0 }, | |
10771 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpeqss", IX86_BUILTIN_CMPEQSS, EQ, 0 }, | |
10772 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpltss", IX86_BUILTIN_CMPLTSS, LT, 0 }, | |
10773 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpless", IX86_BUILTIN_CMPLESS, LE, 0 }, | |
10774 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpgtss", IX86_BUILTIN_CMPGTSS, LT, 1 }, | |
10775 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpgess", IX86_BUILTIN_CMPGESS, LE, 1 }, | |
10776 | { MASK_SSE, CODE_FOR_vmmaskcmpv4sf3, "__builtin_ia32_cmpunordss", IX86_BUILTIN_CMPUNORDSS, UNORDERED, 0 }, | |
10777 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpneqss", IX86_BUILTIN_CMPNEQSS, EQ, 0 }, | |
10778 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpnltss", IX86_BUILTIN_CMPNLTSS, LT, 0 }, | |
10779 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpnless", IX86_BUILTIN_CMPNLESS, LE, 0 }, | |
10780 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpngtss", IX86_BUILTIN_CMPNGTSS, LT, 1 }, | |
10781 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpngess", IX86_BUILTIN_CMPNGESS, LE, 1 }, | |
10782 | { MASK_SSE, CODE_FOR_vmmaskncmpv4sf3, "__builtin_ia32_cmpordss", IX86_BUILTIN_CMPORDSS, UNORDERED, 0 }, | |
10783 | ||
10784 | { MASK_SSE, CODE_FOR_sminv4sf3, "__builtin_ia32_minps", IX86_BUILTIN_MINPS, 0, 0 }, | |
10785 | { MASK_SSE, CODE_FOR_smaxv4sf3, "__builtin_ia32_maxps", IX86_BUILTIN_MAXPS, 0, 0 }, | |
10786 | { MASK_SSE, CODE_FOR_vmsminv4sf3, "__builtin_ia32_minss", IX86_BUILTIN_MINSS, 0, 0 }, | |
10787 | { MASK_SSE, CODE_FOR_vmsmaxv4sf3, "__builtin_ia32_maxss", IX86_BUILTIN_MAXSS, 0, 0 }, | |
10788 | ||
eeb06b1b BS |
10789 | { MASK_SSE, CODE_FOR_sse_movss, "__builtin_ia32_movss", IX86_BUILTIN_MOVSS, 0, 0 }, |
10790 | { MASK_SSE, CODE_FOR_sse_movhlps, "__builtin_ia32_movhlps", IX86_BUILTIN_MOVHLPS, 0, 0 }, | |
10791 | { MASK_SSE, CODE_FOR_sse_movlhps, "__builtin_ia32_movlhps", IX86_BUILTIN_MOVLHPS, 0, 0 }, | |
10792 | { MASK_SSE, CODE_FOR_sse_unpckhps, "__builtin_ia32_unpckhps", IX86_BUILTIN_UNPCKHPS, 0, 0 }, | |
10793 | { MASK_SSE, CODE_FOR_sse_unpcklps, "__builtin_ia32_unpcklps", IX86_BUILTIN_UNPCKLPS, 0, 0 }, | |
bd793c65 BS |
10794 | |
10795 | /* MMX */ | |
eeb06b1b BS |
10796 | { MASK_MMX, CODE_FOR_addv8qi3, "__builtin_ia32_paddb", IX86_BUILTIN_PADDB, 0, 0 }, |
10797 | { MASK_MMX, CODE_FOR_addv4hi3, "__builtin_ia32_paddw", IX86_BUILTIN_PADDW, 0, 0 }, | |
10798 | { MASK_MMX, CODE_FOR_addv2si3, "__builtin_ia32_paddd", IX86_BUILTIN_PADDD, 0, 0 }, | |
10799 | { MASK_MMX, CODE_FOR_subv8qi3, "__builtin_ia32_psubb", IX86_BUILTIN_PSUBB, 0, 0 }, | |
10800 | { MASK_MMX, CODE_FOR_subv4hi3, "__builtin_ia32_psubw", IX86_BUILTIN_PSUBW, 0, 0 }, | |
10801 | { MASK_MMX, CODE_FOR_subv2si3, "__builtin_ia32_psubd", IX86_BUILTIN_PSUBD, 0, 0 }, | |
10802 | ||
10803 | { MASK_MMX, CODE_FOR_ssaddv8qi3, "__builtin_ia32_paddsb", IX86_BUILTIN_PADDSB, 0, 0 }, | |
10804 | { MASK_MMX, CODE_FOR_ssaddv4hi3, "__builtin_ia32_paddsw", IX86_BUILTIN_PADDSW, 0, 0 }, | |
10805 | { MASK_MMX, CODE_FOR_sssubv8qi3, "__builtin_ia32_psubsb", IX86_BUILTIN_PSUBSB, 0, 0 }, | |
10806 | { MASK_MMX, CODE_FOR_sssubv4hi3, "__builtin_ia32_psubsw", IX86_BUILTIN_PSUBSW, 0, 0 }, | |
10807 | { MASK_MMX, CODE_FOR_usaddv8qi3, "__builtin_ia32_paddusb", IX86_BUILTIN_PADDUSB, 0, 0 }, | |
10808 | { MASK_MMX, CODE_FOR_usaddv4hi3, "__builtin_ia32_paddusw", IX86_BUILTIN_PADDUSW, 0, 0 }, | |
10809 | { MASK_MMX, CODE_FOR_ussubv8qi3, "__builtin_ia32_psubusb", IX86_BUILTIN_PSUBUSB, 0, 0 }, | |
10810 | { MASK_MMX, CODE_FOR_ussubv4hi3, "__builtin_ia32_psubusw", IX86_BUILTIN_PSUBUSW, 0, 0 }, | |
10811 | ||
10812 | { MASK_MMX, CODE_FOR_mulv4hi3, "__builtin_ia32_pmullw", IX86_BUILTIN_PMULLW, 0, 0 }, | |
10813 | { MASK_MMX, CODE_FOR_smulv4hi3_highpart, "__builtin_ia32_pmulhw", IX86_BUILTIN_PMULHW, 0, 0 }, | |
47f339cf | 10814 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_umulv4hi3_highpart, "__builtin_ia32_pmulhuw", IX86_BUILTIN_PMULHUW, 0, 0 }, |
eeb06b1b BS |
10815 | |
10816 | { MASK_MMX, CODE_FOR_mmx_anddi3, "__builtin_ia32_pand", IX86_BUILTIN_PAND, 0, 0 }, | |
10817 | { MASK_MMX, CODE_FOR_mmx_nanddi3, "__builtin_ia32_pandn", IX86_BUILTIN_PANDN, 0, 0 }, | |
10818 | { MASK_MMX, CODE_FOR_mmx_iordi3, "__builtin_ia32_por", IX86_BUILTIN_POR, 0, 0 }, | |
10819 | { MASK_MMX, CODE_FOR_mmx_xordi3, "__builtin_ia32_pxor", IX86_BUILTIN_PXOR, 0, 0 }, | |
10820 | ||
47f339cf BS |
10821 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_mmx_uavgv8qi3, "__builtin_ia32_pavgb", IX86_BUILTIN_PAVGB, 0, 0 }, |
10822 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_mmx_uavgv4hi3, "__builtin_ia32_pavgw", IX86_BUILTIN_PAVGW, 0, 0 }, | |
eeb06b1b BS |
10823 | |
10824 | { MASK_MMX, CODE_FOR_eqv8qi3, "__builtin_ia32_pcmpeqb", IX86_BUILTIN_PCMPEQB, 0, 0 }, | |
10825 | { MASK_MMX, CODE_FOR_eqv4hi3, "__builtin_ia32_pcmpeqw", IX86_BUILTIN_PCMPEQW, 0, 0 }, | |
10826 | { MASK_MMX, CODE_FOR_eqv2si3, "__builtin_ia32_pcmpeqd", IX86_BUILTIN_PCMPEQD, 0, 0 }, | |
10827 | { MASK_MMX, CODE_FOR_gtv8qi3, "__builtin_ia32_pcmpgtb", IX86_BUILTIN_PCMPGTB, 0, 0 }, | |
10828 | { MASK_MMX, CODE_FOR_gtv4hi3, "__builtin_ia32_pcmpgtw", IX86_BUILTIN_PCMPGTW, 0, 0 }, | |
10829 | { MASK_MMX, CODE_FOR_gtv2si3, "__builtin_ia32_pcmpgtd", IX86_BUILTIN_PCMPGTD, 0, 0 }, | |
10830 | ||
47f339cf BS |
10831 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_umaxv8qi3, "__builtin_ia32_pmaxub", IX86_BUILTIN_PMAXUB, 0, 0 }, |
10832 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_smaxv4hi3, "__builtin_ia32_pmaxsw", IX86_BUILTIN_PMAXSW, 0, 0 }, | |
10833 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_uminv8qi3, "__builtin_ia32_pminub", IX86_BUILTIN_PMINUB, 0, 0 }, | |
10834 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_sminv4hi3, "__builtin_ia32_pminsw", IX86_BUILTIN_PMINSW, 0, 0 }, | |
eeb06b1b BS |
10835 | |
10836 | { MASK_MMX, CODE_FOR_mmx_punpckhbw, "__builtin_ia32_punpckhbw", IX86_BUILTIN_PUNPCKHBW, 0, 0 }, | |
10837 | { MASK_MMX, CODE_FOR_mmx_punpckhwd, "__builtin_ia32_punpckhwd", IX86_BUILTIN_PUNPCKHWD, 0, 0 }, | |
10838 | { MASK_MMX, CODE_FOR_mmx_punpckhdq, "__builtin_ia32_punpckhdq", IX86_BUILTIN_PUNPCKHDQ, 0, 0 }, | |
10839 | { MASK_MMX, CODE_FOR_mmx_punpcklbw, "__builtin_ia32_punpcklbw", IX86_BUILTIN_PUNPCKLBW, 0, 0 }, | |
10840 | { MASK_MMX, CODE_FOR_mmx_punpcklwd, "__builtin_ia32_punpcklwd", IX86_BUILTIN_PUNPCKLWD, 0, 0 }, | |
10841 | { MASK_MMX, CODE_FOR_mmx_punpckldq, "__builtin_ia32_punpckldq", IX86_BUILTIN_PUNPCKLDQ, 0, 0 }, | |
bd793c65 BS |
10842 | |
10843 | /* Special. */ | |
eeb06b1b BS |
10844 | { MASK_MMX, CODE_FOR_mmx_packsswb, 0, IX86_BUILTIN_PACKSSWB, 0, 0 }, |
10845 | { MASK_MMX, CODE_FOR_mmx_packssdw, 0, IX86_BUILTIN_PACKSSDW, 0, 0 }, | |
10846 | { MASK_MMX, CODE_FOR_mmx_packuswb, 0, IX86_BUILTIN_PACKUSWB, 0, 0 }, | |
10847 | ||
10848 | { MASK_SSE, CODE_FOR_cvtpi2ps, 0, IX86_BUILTIN_CVTPI2PS, 0, 0 }, | |
10849 | { MASK_SSE, CODE_FOR_cvtsi2ss, 0, IX86_BUILTIN_CVTSI2SS, 0, 0 }, | |
10850 | ||
10851 | { MASK_MMX, CODE_FOR_ashlv4hi3, 0, IX86_BUILTIN_PSLLW, 0, 0 }, | |
10852 | { MASK_MMX, CODE_FOR_ashlv4hi3, 0, IX86_BUILTIN_PSLLWI, 0, 0 }, | |
10853 | { MASK_MMX, CODE_FOR_ashlv2si3, 0, IX86_BUILTIN_PSLLD, 0, 0 }, | |
10854 | { MASK_MMX, CODE_FOR_ashlv2si3, 0, IX86_BUILTIN_PSLLDI, 0, 0 }, | |
10855 | { MASK_MMX, CODE_FOR_mmx_ashldi3, 0, IX86_BUILTIN_PSLLQ, 0, 0 }, | |
10856 | { MASK_MMX, CODE_FOR_mmx_ashldi3, 0, IX86_BUILTIN_PSLLQI, 0, 0 }, | |
10857 | ||
10858 | { MASK_MMX, CODE_FOR_lshrv4hi3, 0, IX86_BUILTIN_PSRLW, 0, 0 }, | |
10859 | { MASK_MMX, CODE_FOR_lshrv4hi3, 0, IX86_BUILTIN_PSRLWI, 0, 0 }, | |
10860 | { MASK_MMX, CODE_FOR_lshrv2si3, 0, IX86_BUILTIN_PSRLD, 0, 0 }, | |
10861 | { MASK_MMX, CODE_FOR_lshrv2si3, 0, IX86_BUILTIN_PSRLDI, 0, 0 }, | |
10862 | { MASK_MMX, CODE_FOR_mmx_lshrdi3, 0, IX86_BUILTIN_PSRLQ, 0, 0 }, | |
10863 | { MASK_MMX, CODE_FOR_mmx_lshrdi3, 0, IX86_BUILTIN_PSRLQI, 0, 0 }, | |
10864 | ||
10865 | { MASK_MMX, CODE_FOR_ashrv4hi3, 0, IX86_BUILTIN_PSRAW, 0, 0 }, | |
10866 | { MASK_MMX, CODE_FOR_ashrv4hi3, 0, IX86_BUILTIN_PSRAWI, 0, 0 }, | |
10867 | { MASK_MMX, CODE_FOR_ashrv2si3, 0, IX86_BUILTIN_PSRAD, 0, 0 }, | |
10868 | { MASK_MMX, CODE_FOR_ashrv2si3, 0, IX86_BUILTIN_PSRADI, 0, 0 }, | |
10869 | ||
38b29e64 | 10870 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_mmx_psadbw, 0, IX86_BUILTIN_PSADBW, 0, 0 }, |
eeb06b1b | 10871 | { MASK_MMX, CODE_FOR_mmx_pmaddwd, 0, IX86_BUILTIN_PMADDWD, 0, 0 } |
bd793c65 BS |
10872 | |
10873 | }; | |
10874 | ||
8b60264b | 10875 | static const struct builtin_description bdesc_1arg[] = |
bd793c65 | 10876 | { |
47f339cf | 10877 | { MASK_SSE | MASK_3DNOW_A, CODE_FOR_mmx_pmovmskb, 0, IX86_BUILTIN_PMOVMSKB, 0, 0 }, |
eeb06b1b | 10878 | { MASK_SSE, CODE_FOR_sse_movmskps, 0, IX86_BUILTIN_MOVMSKPS, 0, 0 }, |
bd793c65 | 10879 | |
eeb06b1b BS |
10880 | { MASK_SSE, CODE_FOR_sqrtv4sf2, 0, IX86_BUILTIN_SQRTPS, 0, 0 }, |
10881 | { MASK_SSE, CODE_FOR_rsqrtv4sf2, 0, IX86_BUILTIN_RSQRTPS, 0, 0 }, | |
10882 | { MASK_SSE, CODE_FOR_rcpv4sf2, 0, IX86_BUILTIN_RCPPS, 0, 0 }, | |
bd793c65 | 10883 | |
eeb06b1b BS |
10884 | { MASK_SSE, CODE_FOR_cvtps2pi, 0, IX86_BUILTIN_CVTPS2PI, 0, 0 }, |
10885 | { MASK_SSE, CODE_FOR_cvtss2si, 0, IX86_BUILTIN_CVTSS2SI, 0, 0 }, | |
10886 | { MASK_SSE, CODE_FOR_cvttps2pi, 0, IX86_BUILTIN_CVTTPS2PI, 0, 0 }, | |
10887 | { MASK_SSE, CODE_FOR_cvttss2si, 0, IX86_BUILTIN_CVTTSS2SI, 0, 0 } | |
bd793c65 BS |
10888 | |
10889 | }; | |
10890 | ||
f6155fda SS |
10891 | void |
10892 | ix86_init_builtins () | |
10893 | { | |
10894 | if (TARGET_MMX) | |
10895 | ix86_init_mmx_sse_builtins (); | |
10896 | } | |
10897 | ||
10898 | /* Set up all the MMX/SSE builtins. This is not called if TARGET_MMX | |
bd793c65 BS |
10899 | is zero. Otherwise, if TARGET_SSE is not set, only expand the MMX |
10900 | builtins. */ | |
e37af218 | 10901 | static void |
f6155fda | 10902 | ix86_init_mmx_sse_builtins () |
bd793c65 | 10903 | { |
8b60264b | 10904 | const struct builtin_description * d; |
77ebd435 | 10905 | size_t i; |
cbd5937a | 10906 | tree endlink = void_list_node; |
bd793c65 BS |
10907 | |
10908 | tree pchar_type_node = build_pointer_type (char_type_node); | |
10909 | tree pfloat_type_node = build_pointer_type (float_type_node); | |
10910 | tree pv2si_type_node = build_pointer_type (V2SI_type_node); | |
10911 | tree pdi_type_node = build_pointer_type (long_long_unsigned_type_node); | |
10912 | ||
10913 | /* Comparisons. */ | |
10914 | tree int_ftype_v4sf_v4sf | |
10915 | = build_function_type (integer_type_node, | |
10916 | tree_cons (NULL_TREE, V4SF_type_node, | |
10917 | tree_cons (NULL_TREE, | |
10918 | V4SF_type_node, | |
10919 | endlink))); | |
10920 | tree v4si_ftype_v4sf_v4sf | |
10921 | = build_function_type (V4SI_type_node, | |
10922 | tree_cons (NULL_TREE, V4SF_type_node, | |
10923 | tree_cons (NULL_TREE, | |
10924 | V4SF_type_node, | |
10925 | endlink))); | |
10926 | /* MMX/SSE/integer conversions. */ | |
bd793c65 BS |
10927 | tree int_ftype_v4sf |
10928 | = build_function_type (integer_type_node, | |
10929 | tree_cons (NULL_TREE, V4SF_type_node, | |
10930 | endlink)); | |
10931 | tree int_ftype_v8qi | |
10932 | = build_function_type (integer_type_node, | |
10933 | tree_cons (NULL_TREE, V8QI_type_node, | |
10934 | endlink)); | |
bd793c65 | 10935 | tree v4sf_ftype_v4sf_int |
21e1b5f1 | 10936 | = build_function_type (V4SF_type_node, |
bd793c65 BS |
10937 | tree_cons (NULL_TREE, V4SF_type_node, |
10938 | tree_cons (NULL_TREE, integer_type_node, | |
10939 | endlink))); | |
10940 | tree v4sf_ftype_v4sf_v2si | |
10941 | = build_function_type (V4SF_type_node, | |
10942 | tree_cons (NULL_TREE, V4SF_type_node, | |
10943 | tree_cons (NULL_TREE, V2SI_type_node, | |
10944 | endlink))); | |
10945 | tree int_ftype_v4hi_int | |
10946 | = build_function_type (integer_type_node, | |
10947 | tree_cons (NULL_TREE, V4HI_type_node, | |
10948 | tree_cons (NULL_TREE, integer_type_node, | |
10949 | endlink))); | |
10950 | tree v4hi_ftype_v4hi_int_int | |
332316cd | 10951 | = build_function_type (V4HI_type_node, |
bd793c65 BS |
10952 | tree_cons (NULL_TREE, V4HI_type_node, |
10953 | tree_cons (NULL_TREE, integer_type_node, | |
10954 | tree_cons (NULL_TREE, | |
10955 | integer_type_node, | |
10956 | endlink)))); | |
10957 | /* Miscellaneous. */ | |
10958 | tree v8qi_ftype_v4hi_v4hi | |
10959 | = build_function_type (V8QI_type_node, | |
10960 | tree_cons (NULL_TREE, V4HI_type_node, | |
10961 | tree_cons (NULL_TREE, V4HI_type_node, | |
10962 | endlink))); | |
10963 | tree v4hi_ftype_v2si_v2si | |
10964 | = build_function_type (V4HI_type_node, | |
10965 | tree_cons (NULL_TREE, V2SI_type_node, | |
10966 | tree_cons (NULL_TREE, V2SI_type_node, | |
10967 | endlink))); | |
10968 | tree v4sf_ftype_v4sf_v4sf_int | |
10969 | = build_function_type (V4SF_type_node, | |
10970 | tree_cons (NULL_TREE, V4SF_type_node, | |
10971 | tree_cons (NULL_TREE, V4SF_type_node, | |
10972 | tree_cons (NULL_TREE, | |
10973 | integer_type_node, | |
10974 | endlink)))); | |
10975 | tree v4hi_ftype_v8qi_v8qi | |
10976 | = build_function_type (V4HI_type_node, | |
10977 | tree_cons (NULL_TREE, V8QI_type_node, | |
10978 | tree_cons (NULL_TREE, V8QI_type_node, | |
10979 | endlink))); | |
10980 | tree v2si_ftype_v4hi_v4hi | |
10981 | = build_function_type (V2SI_type_node, | |
10982 | tree_cons (NULL_TREE, V4HI_type_node, | |
10983 | tree_cons (NULL_TREE, V4HI_type_node, | |
10984 | endlink))); | |
10985 | tree v4hi_ftype_v4hi_int | |
10986 | = build_function_type (V4HI_type_node, | |
10987 | tree_cons (NULL_TREE, V4HI_type_node, | |
10988 | tree_cons (NULL_TREE, integer_type_node, | |
10989 | endlink))); | |
bd793c65 BS |
10990 | tree v4hi_ftype_v4hi_di |
10991 | = build_function_type (V4HI_type_node, | |
10992 | tree_cons (NULL_TREE, V4HI_type_node, | |
10993 | tree_cons (NULL_TREE, | |
10994 | long_long_integer_type_node, | |
10995 | endlink))); | |
10996 | tree v2si_ftype_v2si_di | |
10997 | = build_function_type (V2SI_type_node, | |
10998 | tree_cons (NULL_TREE, V2SI_type_node, | |
10999 | tree_cons (NULL_TREE, | |
11000 | long_long_integer_type_node, | |
11001 | endlink))); | |
11002 | tree void_ftype_void | |
11003 | = build_function_type (void_type_node, endlink); | |
bd793c65 BS |
11004 | tree void_ftype_unsigned |
11005 | = build_function_type (void_type_node, | |
11006 | tree_cons (NULL_TREE, unsigned_type_node, | |
11007 | endlink)); | |
11008 | tree unsigned_ftype_void | |
11009 | = build_function_type (unsigned_type_node, endlink); | |
11010 | tree di_ftype_void | |
11011 | = build_function_type (long_long_unsigned_type_node, endlink); | |
e37af218 RH |
11012 | tree v4sf_ftype_void |
11013 | = build_function_type (V4SF_type_node, endlink); | |
bd793c65 BS |
11014 | tree v2si_ftype_v4sf |
11015 | = build_function_type (V2SI_type_node, | |
11016 | tree_cons (NULL_TREE, V4SF_type_node, | |
11017 | endlink)); | |
11018 | /* Loads/stores. */ | |
11019 | tree maskmovq_args = tree_cons (NULL_TREE, V8QI_type_node, | |
11020 | tree_cons (NULL_TREE, V8QI_type_node, | |
11021 | tree_cons (NULL_TREE, | |
11022 | pchar_type_node, | |
11023 | endlink))); | |
11024 | tree void_ftype_v8qi_v8qi_pchar | |
11025 | = build_function_type (void_type_node, maskmovq_args); | |
11026 | tree v4sf_ftype_pfloat | |
11027 | = build_function_type (V4SF_type_node, | |
11028 | tree_cons (NULL_TREE, pfloat_type_node, | |
11029 | endlink)); | |
bd793c65 BS |
11030 | /* @@@ the type is bogus */ |
11031 | tree v4sf_ftype_v4sf_pv2si | |
11032 | = build_function_type (V4SF_type_node, | |
11033 | tree_cons (NULL_TREE, V4SF_type_node, | |
11034 | tree_cons (NULL_TREE, pv2si_type_node, | |
11035 | endlink))); | |
1255c85c BS |
11036 | tree void_ftype_pv2si_v4sf |
11037 | = build_function_type (void_type_node, | |
11038 | tree_cons (NULL_TREE, pv2si_type_node, | |
11039 | tree_cons (NULL_TREE, V4SF_type_node, | |
bd793c65 BS |
11040 | endlink))); |
11041 | tree void_ftype_pfloat_v4sf | |
11042 | = build_function_type (void_type_node, | |
11043 | tree_cons (NULL_TREE, pfloat_type_node, | |
11044 | tree_cons (NULL_TREE, V4SF_type_node, | |
11045 | endlink))); | |
11046 | tree void_ftype_pdi_di | |
11047 | = build_function_type (void_type_node, | |
11048 | tree_cons (NULL_TREE, pdi_type_node, | |
11049 | tree_cons (NULL_TREE, | |
11050 | long_long_unsigned_type_node, | |
11051 | endlink))); | |
11052 | /* Normal vector unops. */ | |
11053 | tree v4sf_ftype_v4sf | |
11054 | = build_function_type (V4SF_type_node, | |
11055 | tree_cons (NULL_TREE, V4SF_type_node, | |
11056 | endlink)); | |
0f290768 | 11057 | |
bd793c65 BS |
11058 | /* Normal vector binops. */ |
11059 | tree v4sf_ftype_v4sf_v4sf | |
11060 | = build_function_type (V4SF_type_node, | |
11061 | tree_cons (NULL_TREE, V4SF_type_node, | |
11062 | tree_cons (NULL_TREE, V4SF_type_node, | |
11063 | endlink))); | |
11064 | tree v8qi_ftype_v8qi_v8qi | |
11065 | = build_function_type (V8QI_type_node, | |
11066 | tree_cons (NULL_TREE, V8QI_type_node, | |
11067 | tree_cons (NULL_TREE, V8QI_type_node, | |
11068 | endlink))); | |
11069 | tree v4hi_ftype_v4hi_v4hi | |
11070 | = build_function_type (V4HI_type_node, | |
11071 | tree_cons (NULL_TREE, V4HI_type_node, | |
11072 | tree_cons (NULL_TREE, V4HI_type_node, | |
11073 | endlink))); | |
11074 | tree v2si_ftype_v2si_v2si | |
11075 | = build_function_type (V2SI_type_node, | |
11076 | tree_cons (NULL_TREE, V2SI_type_node, | |
11077 | tree_cons (NULL_TREE, V2SI_type_node, | |
11078 | endlink))); | |
bd793c65 BS |
11079 | tree di_ftype_di_di |
11080 | = build_function_type (long_long_unsigned_type_node, | |
11081 | tree_cons (NULL_TREE, long_long_unsigned_type_node, | |
11082 | tree_cons (NULL_TREE, | |
11083 | long_long_unsigned_type_node, | |
11084 | endlink))); | |
11085 | ||
47f339cf BS |
11086 | tree v2si_ftype_v2sf |
11087 | = build_function_type (V2SI_type_node, | |
11088 | tree_cons (NULL_TREE, V2SF_type_node, | |
11089 | endlink)); | |
11090 | tree v2sf_ftype_v2si | |
11091 | = build_function_type (V2SF_type_node, | |
11092 | tree_cons (NULL_TREE, V2SI_type_node, | |
11093 | endlink)); | |
11094 | tree v2si_ftype_v2si | |
11095 | = build_function_type (V2SI_type_node, | |
11096 | tree_cons (NULL_TREE, V2SI_type_node, | |
11097 | endlink)); | |
11098 | tree v2sf_ftype_v2sf | |
11099 | = build_function_type (V2SF_type_node, | |
11100 | tree_cons (NULL_TREE, V2SF_type_node, | |
11101 | endlink)); | |
11102 | tree v2sf_ftype_v2sf_v2sf | |
11103 | = build_function_type (V2SF_type_node, | |
11104 | tree_cons (NULL_TREE, V2SF_type_node, | |
11105 | tree_cons (NULL_TREE, | |
11106 | V2SF_type_node, | |
11107 | endlink))); | |
11108 | tree v2si_ftype_v2sf_v2sf | |
11109 | = build_function_type (V2SI_type_node, | |
11110 | tree_cons (NULL_TREE, V2SF_type_node, | |
11111 | tree_cons (NULL_TREE, | |
11112 | V2SF_type_node, | |
11113 | endlink))); | |
11114 | ||
bd793c65 BS |
11115 | /* Add all builtins that are more or less simple operations on two |
11116 | operands. */ | |
11117 | for (i = 0, d = bdesc_2arg; i < sizeof (bdesc_2arg) / sizeof *d; i++, d++) | |
11118 | { | |
11119 | /* Use one of the operands; the target can have a different mode for | |
11120 | mask-generating compares. */ | |
11121 | enum machine_mode mode; | |
11122 | tree type; | |
11123 | ||
11124 | if (d->name == 0) | |
11125 | continue; | |
11126 | mode = insn_data[d->icode].operand[1].mode; | |
11127 | ||
bd793c65 BS |
11128 | switch (mode) |
11129 | { | |
11130 | case V4SFmode: | |
11131 | type = v4sf_ftype_v4sf_v4sf; | |
11132 | break; | |
11133 | case V8QImode: | |
11134 | type = v8qi_ftype_v8qi_v8qi; | |
11135 | break; | |
11136 | case V4HImode: | |
11137 | type = v4hi_ftype_v4hi_v4hi; | |
11138 | break; | |
11139 | case V2SImode: | |
11140 | type = v2si_ftype_v2si_v2si; | |
11141 | break; | |
bd793c65 BS |
11142 | case DImode: |
11143 | type = di_ftype_di_di; | |
11144 | break; | |
11145 | ||
11146 | default: | |
11147 | abort (); | |
11148 | } | |
0f290768 | 11149 | |
bd793c65 BS |
11150 | /* Override for comparisons. */ |
11151 | if (d->icode == CODE_FOR_maskcmpv4sf3 | |
11152 | || d->icode == CODE_FOR_maskncmpv4sf3 | |
11153 | || d->icode == CODE_FOR_vmmaskcmpv4sf3 | |
11154 | || d->icode == CODE_FOR_vmmaskncmpv4sf3) | |
11155 | type = v4si_ftype_v4sf_v4sf; | |
11156 | ||
eeb06b1b | 11157 | def_builtin (d->mask, d->name, type, d->code); |
bd793c65 BS |
11158 | } |
11159 | ||
11160 | /* Add the remaining MMX insns with somewhat more complicated types. */ | |
eeb06b1b BS |
11161 | def_builtin (MASK_MMX, "__builtin_ia32_mmx_zero", di_ftype_void, IX86_BUILTIN_MMX_ZERO); |
11162 | def_builtin (MASK_MMX, "__builtin_ia32_emms", void_ftype_void, IX86_BUILTIN_EMMS); | |
11163 | def_builtin (MASK_MMX, "__builtin_ia32_ldmxcsr", void_ftype_unsigned, IX86_BUILTIN_LDMXCSR); | |
11164 | def_builtin (MASK_MMX, "__builtin_ia32_stmxcsr", unsigned_ftype_void, IX86_BUILTIN_STMXCSR); | |
11165 | def_builtin (MASK_MMX, "__builtin_ia32_psllw", v4hi_ftype_v4hi_di, IX86_BUILTIN_PSLLW); | |
11166 | def_builtin (MASK_MMX, "__builtin_ia32_pslld", v2si_ftype_v2si_di, IX86_BUILTIN_PSLLD); | |
11167 | def_builtin (MASK_MMX, "__builtin_ia32_psllq", di_ftype_di_di, IX86_BUILTIN_PSLLQ); | |
11168 | ||
11169 | def_builtin (MASK_MMX, "__builtin_ia32_psrlw", v4hi_ftype_v4hi_di, IX86_BUILTIN_PSRLW); | |
11170 | def_builtin (MASK_MMX, "__builtin_ia32_psrld", v2si_ftype_v2si_di, IX86_BUILTIN_PSRLD); | |
11171 | def_builtin (MASK_MMX, "__builtin_ia32_psrlq", di_ftype_di_di, IX86_BUILTIN_PSRLQ); | |
11172 | ||
11173 | def_builtin (MASK_MMX, "__builtin_ia32_psraw", v4hi_ftype_v4hi_di, IX86_BUILTIN_PSRAW); | |
11174 | def_builtin (MASK_MMX, "__builtin_ia32_psrad", v2si_ftype_v2si_di, IX86_BUILTIN_PSRAD); | |
11175 | ||
11176 | def_builtin (MASK_MMX, "__builtin_ia32_pshufw", v4hi_ftype_v4hi_int, IX86_BUILTIN_PSHUFW); | |
11177 | def_builtin (MASK_MMX, "__builtin_ia32_pmaddwd", v2si_ftype_v4hi_v4hi, IX86_BUILTIN_PMADDWD); | |
0f290768 | 11178 | |
bd793c65 BS |
11179 | /* comi/ucomi insns. */ |
11180 | for (i = 0, d = bdesc_comi; i < sizeof (bdesc_comi) / sizeof *d; i++, d++) | |
eeb06b1b | 11181 | def_builtin (d->mask, d->name, int_ftype_v4sf_v4sf, d->code); |
bd793c65 | 11182 | |
1255c85c BS |
11183 | def_builtin (MASK_MMX, "__builtin_ia32_packsswb", v8qi_ftype_v4hi_v4hi, IX86_BUILTIN_PACKSSWB); |
11184 | def_builtin (MASK_MMX, "__builtin_ia32_packssdw", v4hi_ftype_v2si_v2si, IX86_BUILTIN_PACKSSDW); | |
11185 | def_builtin (MASK_MMX, "__builtin_ia32_packuswb", v8qi_ftype_v4hi_v4hi, IX86_BUILTIN_PACKUSWB); | |
bd793c65 | 11186 | |
eeb06b1b BS |
11187 | def_builtin (MASK_SSE, "__builtin_ia32_cvtpi2ps", v4sf_ftype_v4sf_v2si, IX86_BUILTIN_CVTPI2PS); |
11188 | def_builtin (MASK_SSE, "__builtin_ia32_cvtps2pi", v2si_ftype_v4sf, IX86_BUILTIN_CVTPS2PI); | |
11189 | def_builtin (MASK_SSE, "__builtin_ia32_cvtsi2ss", v4sf_ftype_v4sf_int, IX86_BUILTIN_CVTSI2SS); | |
11190 | def_builtin (MASK_SSE, "__builtin_ia32_cvtss2si", int_ftype_v4sf, IX86_BUILTIN_CVTSS2SI); | |
11191 | def_builtin (MASK_SSE, "__builtin_ia32_cvttps2pi", v2si_ftype_v4sf, IX86_BUILTIN_CVTTPS2PI); | |
11192 | def_builtin (MASK_SSE, "__builtin_ia32_cvttss2si", int_ftype_v4sf, IX86_BUILTIN_CVTTSS2SI); | |
bd793c65 | 11193 | |
e37af218 RH |
11194 | def_builtin (MASK_SSE, "__builtin_ia32_andps", v4sf_ftype_v4sf_v4sf, IX86_BUILTIN_ANDPS); |
11195 | def_builtin (MASK_SSE, "__builtin_ia32_andnps", v4sf_ftype_v4sf_v4sf, IX86_BUILTIN_ANDNPS); | |
11196 | def_builtin (MASK_SSE, "__builtin_ia32_orps", v4sf_ftype_v4sf_v4sf, IX86_BUILTIN_ORPS); | |
11197 | def_builtin (MASK_SSE, "__builtin_ia32_xorps", v4sf_ftype_v4sf_v4sf, IX86_BUILTIN_XORPS); | |
11198 | ||
47f339cf BS |
11199 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_pextrw", int_ftype_v4hi_int, IX86_BUILTIN_PEXTRW); |
11200 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_pinsrw", v4hi_ftype_v4hi_int_int, IX86_BUILTIN_PINSRW); | |
bd793c65 | 11201 | |
47f339cf | 11202 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_maskmovq", void_ftype_v8qi_v8qi_pchar, IX86_BUILTIN_MASKMOVQ); |
bd793c65 | 11203 | |
eeb06b1b BS |
11204 | def_builtin (MASK_SSE, "__builtin_ia32_loadaps", v4sf_ftype_pfloat, IX86_BUILTIN_LOADAPS); |
11205 | def_builtin (MASK_SSE, "__builtin_ia32_loadups", v4sf_ftype_pfloat, IX86_BUILTIN_LOADUPS); | |
11206 | def_builtin (MASK_SSE, "__builtin_ia32_loadss", v4sf_ftype_pfloat, IX86_BUILTIN_LOADSS); | |
11207 | def_builtin (MASK_SSE, "__builtin_ia32_storeaps", void_ftype_pfloat_v4sf, IX86_BUILTIN_STOREAPS); | |
11208 | def_builtin (MASK_SSE, "__builtin_ia32_storeups", void_ftype_pfloat_v4sf, IX86_BUILTIN_STOREUPS); | |
11209 | def_builtin (MASK_SSE, "__builtin_ia32_storess", void_ftype_pfloat_v4sf, IX86_BUILTIN_STORESS); | |
bd793c65 | 11210 | |
eeb06b1b BS |
11211 | def_builtin (MASK_SSE, "__builtin_ia32_loadhps", v4sf_ftype_v4sf_pv2si, IX86_BUILTIN_LOADHPS); |
11212 | def_builtin (MASK_SSE, "__builtin_ia32_loadlps", v4sf_ftype_v4sf_pv2si, IX86_BUILTIN_LOADLPS); | |
1255c85c BS |
11213 | def_builtin (MASK_SSE, "__builtin_ia32_storehps", void_ftype_pv2si_v4sf, IX86_BUILTIN_STOREHPS); |
11214 | def_builtin (MASK_SSE, "__builtin_ia32_storelps", void_ftype_pv2si_v4sf, IX86_BUILTIN_STORELPS); | |
bd793c65 | 11215 | |
eeb06b1b | 11216 | def_builtin (MASK_SSE, "__builtin_ia32_movmskps", int_ftype_v4sf, IX86_BUILTIN_MOVMSKPS); |
47f339cf | 11217 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_pmovmskb", int_ftype_v8qi, IX86_BUILTIN_PMOVMSKB); |
eeb06b1b | 11218 | def_builtin (MASK_SSE, "__builtin_ia32_movntps", void_ftype_pfloat_v4sf, IX86_BUILTIN_MOVNTPS); |
47f339cf | 11219 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_movntq", void_ftype_pdi_di, IX86_BUILTIN_MOVNTQ); |
bd793c65 | 11220 | |
47f339cf | 11221 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_sfence", void_ftype_void, IX86_BUILTIN_SFENCE); |
bd793c65 | 11222 | |
47f339cf | 11223 | def_builtin (MASK_SSE | MASK_3DNOW_A, "__builtin_ia32_psadbw", v4hi_ftype_v8qi_v8qi, IX86_BUILTIN_PSADBW); |
bd793c65 | 11224 | |
eeb06b1b BS |
11225 | def_builtin (MASK_SSE, "__builtin_ia32_rcpps", v4sf_ftype_v4sf, IX86_BUILTIN_RCPPS); |
11226 | def_builtin (MASK_SSE, "__builtin_ia32_rcpss", v4sf_ftype_v4sf, IX86_BUILTIN_RCPSS); | |
11227 | def_builtin (MASK_SSE, "__builtin_ia32_rsqrtps", v4sf_ftype_v4sf, IX86_BUILTIN_RSQRTPS); | |
11228 | def_builtin (MASK_SSE, "__builtin_ia32_rsqrtss", v4sf_ftype_v4sf, IX86_BUILTIN_RSQRTSS); | |
11229 | def_builtin (MASK_SSE, "__builtin_ia32_sqrtps", v4sf_ftype_v4sf, IX86_BUILTIN_SQRTPS); | |
11230 | def_builtin (MASK_SSE, "__builtin_ia32_sqrtss", v4sf_ftype_v4sf, IX86_BUILTIN_SQRTSS); | |
bd793c65 | 11231 | |
eeb06b1b | 11232 | def_builtin (MASK_SSE, "__builtin_ia32_shufps", v4sf_ftype_v4sf_v4sf_int, IX86_BUILTIN_SHUFPS); |
bd793c65 | 11233 | |
47f339cf BS |
11234 | /* Original 3DNow! */ |
11235 | def_builtin (MASK_3DNOW, "__builtin_ia32_femms", void_ftype_void, IX86_BUILTIN_FEMMS); | |
11236 | def_builtin (MASK_3DNOW, "__builtin_ia32_pavgusb", v8qi_ftype_v8qi_v8qi, IX86_BUILTIN_PAVGUSB); | |
11237 | def_builtin (MASK_3DNOW, "__builtin_ia32_pf2id", v2si_ftype_v2sf, IX86_BUILTIN_PF2ID); | |
11238 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfacc", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFACC); | |
11239 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfadd", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFADD); | |
11240 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfcmpeq", v2si_ftype_v2sf_v2sf, IX86_BUILTIN_PFCMPEQ); | |
11241 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfcmpge", v2si_ftype_v2sf_v2sf, IX86_BUILTIN_PFCMPGE); | |
11242 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfcmpgt", v2si_ftype_v2sf_v2sf, IX86_BUILTIN_PFCMPGT); | |
11243 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfmax", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFMAX); | |
11244 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfmin", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFMIN); | |
11245 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfmul", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFMUL); | |
11246 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfrcp", v2sf_ftype_v2sf, IX86_BUILTIN_PFRCP); | |
11247 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfrcpit1", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFRCPIT1); | |
11248 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfrcpit2", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFRCPIT2); | |
11249 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfrsqrt", v2sf_ftype_v2sf, IX86_BUILTIN_PFRSQRT); | |
11250 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfrsqit1", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFRSQIT1); | |
11251 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfsub", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFSUB); | |
11252 | def_builtin (MASK_3DNOW, "__builtin_ia32_pfsubr", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFSUBR); | |
11253 | def_builtin (MASK_3DNOW, "__builtin_ia32_pi2fd", v2sf_ftype_v2si, IX86_BUILTIN_PI2FD); | |
11254 | def_builtin (MASK_3DNOW, "__builtin_ia32_pmulhrw", v4hi_ftype_v4hi_v4hi, IX86_BUILTIN_PMULHRW); | |
47f339cf BS |
11255 | |
11256 | /* 3DNow! extension as used in the Athlon CPU. */ | |
11257 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pf2iw", v2si_ftype_v2sf, IX86_BUILTIN_PF2IW); | |
11258 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pfnacc", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFNACC); | |
11259 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pfpnacc", v2sf_ftype_v2sf_v2sf, IX86_BUILTIN_PFPNACC); | |
11260 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pi2fw", v2sf_ftype_v2si, IX86_BUILTIN_PI2FW); | |
11261 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pswapdsf", v2sf_ftype_v2sf, IX86_BUILTIN_PSWAPDSF); | |
11262 | def_builtin (MASK_3DNOW_A, "__builtin_ia32_pswapdsi", v2si_ftype_v2si, IX86_BUILTIN_PSWAPDSI); | |
11263 | ||
e37af218 | 11264 | def_builtin (MASK_SSE, "__builtin_ia32_setzerops", v4sf_ftype_void, IX86_BUILTIN_SSE_ZERO); |
bd793c65 BS |
11265 | } |
11266 | ||
11267 | /* Errors in the source file can cause expand_expr to return const0_rtx | |
11268 | where we expect a vector. To avoid crashing, use one of the vector | |
11269 | clear instructions. */ | |
11270 | static rtx | |
11271 | safe_vector_operand (x, mode) | |
11272 | rtx x; | |
11273 | enum machine_mode mode; | |
11274 | { | |
11275 | if (x != const0_rtx) | |
11276 | return x; | |
11277 | x = gen_reg_rtx (mode); | |
11278 | ||
47f339cf | 11279 | if (VALID_MMX_REG_MODE (mode) || VALID_MMX_REG_MODE_3DNOW (mode)) |
bd793c65 BS |
11280 | emit_insn (gen_mmx_clrdi (mode == DImode ? x |
11281 | : gen_rtx_SUBREG (DImode, x, 0))); | |
11282 | else | |
e37af218 RH |
11283 | emit_insn (gen_sse_clrv4sf (mode == V4SFmode ? x |
11284 | : gen_rtx_SUBREG (V4SFmode, x, 0))); | |
bd793c65 BS |
11285 | return x; |
11286 | } | |
11287 | ||
11288 | /* Subroutine of ix86_expand_builtin to take care of binop insns. */ | |
11289 | ||
11290 | static rtx | |
11291 | ix86_expand_binop_builtin (icode, arglist, target) | |
11292 | enum insn_code icode; | |
11293 | tree arglist; | |
11294 | rtx target; | |
11295 | { | |
11296 | rtx pat; | |
11297 | tree arg0 = TREE_VALUE (arglist); | |
11298 | tree arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11299 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11300 | rtx op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11301 | enum machine_mode tmode = insn_data[icode].operand[0].mode; | |
11302 | enum machine_mode mode0 = insn_data[icode].operand[1].mode; | |
11303 | enum machine_mode mode1 = insn_data[icode].operand[2].mode; | |
11304 | ||
11305 | if (VECTOR_MODE_P (mode0)) | |
11306 | op0 = safe_vector_operand (op0, mode0); | |
11307 | if (VECTOR_MODE_P (mode1)) | |
11308 | op1 = safe_vector_operand (op1, mode1); | |
11309 | ||
11310 | if (! target | |
11311 | || GET_MODE (target) != tmode | |
11312 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11313 | target = gen_reg_rtx (tmode); | |
11314 | ||
11315 | /* In case the insn wants input operands in modes different from | |
11316 | the result, abort. */ | |
11317 | if (GET_MODE (op0) != mode0 || GET_MODE (op1) != mode1) | |
11318 | abort (); | |
11319 | ||
11320 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11321 | op0 = copy_to_mode_reg (mode0, op0); | |
11322 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode1)) | |
11323 | op1 = copy_to_mode_reg (mode1, op1); | |
11324 | ||
11325 | pat = GEN_FCN (icode) (target, op0, op1); | |
11326 | if (! pat) | |
11327 | return 0; | |
11328 | emit_insn (pat); | |
11329 | return target; | |
11330 | } | |
11331 | ||
e37af218 RH |
11332 | /* In type_for_mode we restrict the ability to create TImode types |
11333 | to hosts with 64-bit H_W_I. So we've defined the SSE logicals | |
11334 | to have a V4SFmode signature. Convert them in-place to TImode. */ | |
11335 | ||
11336 | static rtx | |
11337 | ix86_expand_timode_binop_builtin (icode, arglist, target) | |
11338 | enum insn_code icode; | |
11339 | tree arglist; | |
11340 | rtx target; | |
11341 | { | |
11342 | rtx pat; | |
11343 | tree arg0 = TREE_VALUE (arglist); | |
11344 | tree arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11345 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11346 | rtx op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11347 | ||
11348 | op0 = gen_lowpart (TImode, op0); | |
11349 | op1 = gen_lowpart (TImode, op1); | |
11350 | target = gen_reg_rtx (TImode); | |
11351 | ||
11352 | if (! (*insn_data[icode].operand[1].predicate) (op0, TImode)) | |
11353 | op0 = copy_to_mode_reg (TImode, op0); | |
11354 | if (! (*insn_data[icode].operand[2].predicate) (op1, TImode)) | |
11355 | op1 = copy_to_mode_reg (TImode, op1); | |
11356 | ||
11357 | pat = GEN_FCN (icode) (target, op0, op1); | |
11358 | if (! pat) | |
11359 | return 0; | |
11360 | emit_insn (pat); | |
11361 | ||
11362 | return gen_lowpart (V4SFmode, target); | |
11363 | } | |
11364 | ||
bd793c65 BS |
11365 | /* Subroutine of ix86_expand_builtin to take care of stores. */ |
11366 | ||
11367 | static rtx | |
e37af218 | 11368 | ix86_expand_store_builtin (icode, arglist) |
bd793c65 BS |
11369 | enum insn_code icode; |
11370 | tree arglist; | |
bd793c65 BS |
11371 | { |
11372 | rtx pat; | |
11373 | tree arg0 = TREE_VALUE (arglist); | |
11374 | tree arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11375 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11376 | rtx op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11377 | enum machine_mode mode0 = insn_data[icode].operand[0].mode; | |
11378 | enum machine_mode mode1 = insn_data[icode].operand[1].mode; | |
11379 | ||
11380 | if (VECTOR_MODE_P (mode1)) | |
11381 | op1 = safe_vector_operand (op1, mode1); | |
11382 | ||
11383 | op0 = gen_rtx_MEM (mode0, copy_to_mode_reg (Pmode, op0)); | |
bd793c65 BS |
11384 | pat = GEN_FCN (icode) (op0, op1); |
11385 | if (pat) | |
11386 | emit_insn (pat); | |
11387 | return 0; | |
11388 | } | |
11389 | ||
11390 | /* Subroutine of ix86_expand_builtin to take care of unop insns. */ | |
11391 | ||
11392 | static rtx | |
11393 | ix86_expand_unop_builtin (icode, arglist, target, do_load) | |
11394 | enum insn_code icode; | |
11395 | tree arglist; | |
11396 | rtx target; | |
11397 | int do_load; | |
11398 | { | |
11399 | rtx pat; | |
11400 | tree arg0 = TREE_VALUE (arglist); | |
11401 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11402 | enum machine_mode tmode = insn_data[icode].operand[0].mode; | |
11403 | enum machine_mode mode0 = insn_data[icode].operand[1].mode; | |
11404 | ||
11405 | if (! target | |
11406 | || GET_MODE (target) != tmode | |
11407 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11408 | target = gen_reg_rtx (tmode); | |
11409 | if (do_load) | |
11410 | op0 = gen_rtx_MEM (mode0, copy_to_mode_reg (Pmode, op0)); | |
11411 | else | |
11412 | { | |
11413 | if (VECTOR_MODE_P (mode0)) | |
11414 | op0 = safe_vector_operand (op0, mode0); | |
11415 | ||
11416 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11417 | op0 = copy_to_mode_reg (mode0, op0); | |
11418 | } | |
11419 | ||
11420 | pat = GEN_FCN (icode) (target, op0); | |
11421 | if (! pat) | |
11422 | return 0; | |
11423 | emit_insn (pat); | |
11424 | return target; | |
11425 | } | |
11426 | ||
11427 | /* Subroutine of ix86_expand_builtin to take care of three special unop insns: | |
11428 | sqrtss, rsqrtss, rcpss. */ | |
11429 | ||
11430 | static rtx | |
11431 | ix86_expand_unop1_builtin (icode, arglist, target) | |
11432 | enum insn_code icode; | |
11433 | tree arglist; | |
11434 | rtx target; | |
11435 | { | |
11436 | rtx pat; | |
11437 | tree arg0 = TREE_VALUE (arglist); | |
11438 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11439 | enum machine_mode tmode = insn_data[icode].operand[0].mode; | |
11440 | enum machine_mode mode0 = insn_data[icode].operand[1].mode; | |
11441 | ||
11442 | if (! target | |
11443 | || GET_MODE (target) != tmode | |
11444 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11445 | target = gen_reg_rtx (tmode); | |
11446 | ||
11447 | if (VECTOR_MODE_P (mode0)) | |
11448 | op0 = safe_vector_operand (op0, mode0); | |
11449 | ||
11450 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11451 | op0 = copy_to_mode_reg (mode0, op0); | |
11452 | ||
11453 | pat = GEN_FCN (icode) (target, op0, op0); | |
11454 | if (! pat) | |
11455 | return 0; | |
11456 | emit_insn (pat); | |
11457 | return target; | |
11458 | } | |
11459 | ||
11460 | /* Subroutine of ix86_expand_builtin to take care of comparison insns. */ | |
11461 | ||
11462 | static rtx | |
11463 | ix86_expand_sse_compare (d, arglist, target) | |
8b60264b | 11464 | const struct builtin_description *d; |
bd793c65 BS |
11465 | tree arglist; |
11466 | rtx target; | |
11467 | { | |
11468 | rtx pat; | |
11469 | tree arg0 = TREE_VALUE (arglist); | |
11470 | tree arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11471 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11472 | rtx op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11473 | rtx op2; | |
11474 | enum machine_mode tmode = insn_data[d->icode].operand[0].mode; | |
11475 | enum machine_mode mode0 = insn_data[d->icode].operand[1].mode; | |
11476 | enum machine_mode mode1 = insn_data[d->icode].operand[2].mode; | |
11477 | enum rtx_code comparison = d->comparison; | |
11478 | ||
11479 | if (VECTOR_MODE_P (mode0)) | |
11480 | op0 = safe_vector_operand (op0, mode0); | |
11481 | if (VECTOR_MODE_P (mode1)) | |
11482 | op1 = safe_vector_operand (op1, mode1); | |
11483 | ||
11484 | /* Swap operands if we have a comparison that isn't available in | |
11485 | hardware. */ | |
11486 | if (d->flag) | |
11487 | { | |
21e1b5f1 BS |
11488 | rtx tmp = gen_reg_rtx (mode1); |
11489 | emit_move_insn (tmp, op1); | |
bd793c65 | 11490 | op1 = op0; |
21e1b5f1 | 11491 | op0 = tmp; |
bd793c65 | 11492 | } |
21e1b5f1 BS |
11493 | |
11494 | if (! target | |
11495 | || GET_MODE (target) != tmode | |
11496 | || ! (*insn_data[d->icode].operand[0].predicate) (target, tmode)) | |
bd793c65 BS |
11497 | target = gen_reg_rtx (tmode); |
11498 | ||
11499 | if (! (*insn_data[d->icode].operand[1].predicate) (op0, mode0)) | |
11500 | op0 = copy_to_mode_reg (mode0, op0); | |
11501 | if (! (*insn_data[d->icode].operand[2].predicate) (op1, mode1)) | |
11502 | op1 = copy_to_mode_reg (mode1, op1); | |
11503 | ||
11504 | op2 = gen_rtx_fmt_ee (comparison, mode0, op0, op1); | |
11505 | pat = GEN_FCN (d->icode) (target, op0, op1, op2); | |
11506 | if (! pat) | |
11507 | return 0; | |
11508 | emit_insn (pat); | |
11509 | return target; | |
11510 | } | |
11511 | ||
11512 | /* Subroutine of ix86_expand_builtin to take care of comi insns. */ | |
11513 | ||
11514 | static rtx | |
11515 | ix86_expand_sse_comi (d, arglist, target) | |
8b60264b | 11516 | const struct builtin_description *d; |
bd793c65 BS |
11517 | tree arglist; |
11518 | rtx target; | |
11519 | { | |
11520 | rtx pat; | |
11521 | tree arg0 = TREE_VALUE (arglist); | |
11522 | tree arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11523 | rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11524 | rtx op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11525 | rtx op2; | |
11526 | enum machine_mode mode0 = insn_data[d->icode].operand[0].mode; | |
11527 | enum machine_mode mode1 = insn_data[d->icode].operand[1].mode; | |
11528 | enum rtx_code comparison = d->comparison; | |
11529 | ||
11530 | if (VECTOR_MODE_P (mode0)) | |
11531 | op0 = safe_vector_operand (op0, mode0); | |
11532 | if (VECTOR_MODE_P (mode1)) | |
11533 | op1 = safe_vector_operand (op1, mode1); | |
11534 | ||
11535 | /* Swap operands if we have a comparison that isn't available in | |
11536 | hardware. */ | |
11537 | if (d->flag) | |
11538 | { | |
11539 | rtx tmp = op1; | |
11540 | op1 = op0; | |
11541 | op0 = tmp; | |
bd793c65 BS |
11542 | } |
11543 | ||
11544 | target = gen_reg_rtx (SImode); | |
11545 | emit_move_insn (target, const0_rtx); | |
11546 | target = gen_rtx_SUBREG (QImode, target, 0); | |
11547 | ||
11548 | if (! (*insn_data[d->icode].operand[0].predicate) (op0, mode0)) | |
11549 | op0 = copy_to_mode_reg (mode0, op0); | |
11550 | if (! (*insn_data[d->icode].operand[1].predicate) (op1, mode1)) | |
11551 | op1 = copy_to_mode_reg (mode1, op1); | |
11552 | ||
11553 | op2 = gen_rtx_fmt_ee (comparison, mode0, op0, op1); | |
11554 | pat = GEN_FCN (d->icode) (op0, op1, op2); | |
11555 | if (! pat) | |
11556 | return 0; | |
11557 | emit_insn (pat); | |
29628f27 BS |
11558 | emit_insn (gen_rtx_SET (VOIDmode, |
11559 | gen_rtx_STRICT_LOW_PART (VOIDmode, target), | |
11560 | gen_rtx_fmt_ee (comparison, QImode, | |
11561 | gen_rtx_REG (CCmode, FLAGS_REG), | |
11562 | const0_rtx))); | |
bd793c65 | 11563 | |
6f1a6c5b | 11564 | return SUBREG_REG (target); |
bd793c65 BS |
11565 | } |
11566 | ||
11567 | /* Expand an expression EXP that calls a built-in function, | |
11568 | with result going to TARGET if that's convenient | |
11569 | (and in mode MODE if that's convenient). | |
11570 | SUBTARGET may be used as the target for computing one of EXP's operands. | |
11571 | IGNORE is nonzero if the value is to be ignored. */ | |
11572 | ||
11573 | rtx | |
11574 | ix86_expand_builtin (exp, target, subtarget, mode, ignore) | |
11575 | tree exp; | |
11576 | rtx target; | |
11577 | rtx subtarget ATTRIBUTE_UNUSED; | |
11578 | enum machine_mode mode ATTRIBUTE_UNUSED; | |
11579 | int ignore ATTRIBUTE_UNUSED; | |
11580 | { | |
8b60264b | 11581 | const struct builtin_description *d; |
77ebd435 | 11582 | size_t i; |
bd793c65 BS |
11583 | enum insn_code icode; |
11584 | tree fndecl = TREE_OPERAND (TREE_OPERAND (exp, 0), 0); | |
11585 | tree arglist = TREE_OPERAND (exp, 1); | |
e37af218 | 11586 | tree arg0, arg1, arg2; |
bd793c65 BS |
11587 | rtx op0, op1, op2, pat; |
11588 | enum machine_mode tmode, mode0, mode1, mode2; | |
8752c357 | 11589 | unsigned int fcode = DECL_FUNCTION_CODE (fndecl); |
bd793c65 BS |
11590 | |
11591 | switch (fcode) | |
11592 | { | |
11593 | case IX86_BUILTIN_EMMS: | |
11594 | emit_insn (gen_emms ()); | |
11595 | return 0; | |
11596 | ||
11597 | case IX86_BUILTIN_SFENCE: | |
11598 | emit_insn (gen_sfence ()); | |
11599 | return 0; | |
11600 | ||
bd793c65 BS |
11601 | case IX86_BUILTIN_PEXTRW: |
11602 | icode = CODE_FOR_mmx_pextrw; | |
11603 | arg0 = TREE_VALUE (arglist); | |
11604 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11605 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11606 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11607 | tmode = insn_data[icode].operand[0].mode; | |
11608 | mode0 = insn_data[icode].operand[1].mode; | |
11609 | mode1 = insn_data[icode].operand[2].mode; | |
11610 | ||
11611 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11612 | op0 = copy_to_mode_reg (mode0, op0); | |
11613 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode1)) | |
11614 | { | |
11615 | /* @@@ better error message */ | |
11616 | error ("selector must be an immediate"); | |
6f1a6c5b | 11617 | return gen_reg_rtx (tmode); |
bd793c65 BS |
11618 | } |
11619 | if (target == 0 | |
11620 | || GET_MODE (target) != tmode | |
11621 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11622 | target = gen_reg_rtx (tmode); | |
11623 | pat = GEN_FCN (icode) (target, op0, op1); | |
11624 | if (! pat) | |
11625 | return 0; | |
11626 | emit_insn (pat); | |
11627 | return target; | |
11628 | ||
11629 | case IX86_BUILTIN_PINSRW: | |
11630 | icode = CODE_FOR_mmx_pinsrw; | |
11631 | arg0 = TREE_VALUE (arglist); | |
11632 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11633 | arg2 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); | |
11634 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11635 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11636 | op2 = expand_expr (arg2, NULL_RTX, VOIDmode, 0); | |
11637 | tmode = insn_data[icode].operand[0].mode; | |
11638 | mode0 = insn_data[icode].operand[1].mode; | |
11639 | mode1 = insn_data[icode].operand[2].mode; | |
11640 | mode2 = insn_data[icode].operand[3].mode; | |
11641 | ||
11642 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11643 | op0 = copy_to_mode_reg (mode0, op0); | |
11644 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode1)) | |
11645 | op1 = copy_to_mode_reg (mode1, op1); | |
11646 | if (! (*insn_data[icode].operand[3].predicate) (op2, mode2)) | |
11647 | { | |
11648 | /* @@@ better error message */ | |
11649 | error ("selector must be an immediate"); | |
11650 | return const0_rtx; | |
11651 | } | |
11652 | if (target == 0 | |
11653 | || GET_MODE (target) != tmode | |
11654 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11655 | target = gen_reg_rtx (tmode); | |
11656 | pat = GEN_FCN (icode) (target, op0, op1, op2); | |
11657 | if (! pat) | |
11658 | return 0; | |
11659 | emit_insn (pat); | |
11660 | return target; | |
11661 | ||
11662 | case IX86_BUILTIN_MASKMOVQ: | |
11663 | icode = CODE_FOR_mmx_maskmovq; | |
11664 | /* Note the arg order is different from the operand order. */ | |
11665 | arg1 = TREE_VALUE (arglist); | |
11666 | arg2 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11667 | arg0 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); | |
11668 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11669 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11670 | op2 = expand_expr (arg2, NULL_RTX, VOIDmode, 0); | |
11671 | mode0 = insn_data[icode].operand[0].mode; | |
11672 | mode1 = insn_data[icode].operand[1].mode; | |
11673 | mode2 = insn_data[icode].operand[2].mode; | |
11674 | ||
11675 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11676 | op0 = copy_to_mode_reg (mode0, op0); | |
11677 | if (! (*insn_data[icode].operand[1].predicate) (op1, mode1)) | |
11678 | op1 = copy_to_mode_reg (mode1, op1); | |
11679 | if (! (*insn_data[icode].operand[2].predicate) (op2, mode2)) | |
11680 | op2 = copy_to_mode_reg (mode2, op2); | |
11681 | pat = GEN_FCN (icode) (op0, op1, op2); | |
11682 | if (! pat) | |
11683 | return 0; | |
11684 | emit_insn (pat); | |
11685 | return 0; | |
11686 | ||
11687 | case IX86_BUILTIN_SQRTSS: | |
11688 | return ix86_expand_unop1_builtin (CODE_FOR_vmsqrtv4sf2, arglist, target); | |
11689 | case IX86_BUILTIN_RSQRTSS: | |
11690 | return ix86_expand_unop1_builtin (CODE_FOR_vmrsqrtv4sf2, arglist, target); | |
11691 | case IX86_BUILTIN_RCPSS: | |
11692 | return ix86_expand_unop1_builtin (CODE_FOR_vmrcpv4sf2, arglist, target); | |
11693 | ||
e37af218 RH |
11694 | case IX86_BUILTIN_ANDPS: |
11695 | return ix86_expand_timode_binop_builtin (CODE_FOR_sse_andti3, | |
11696 | arglist, target); | |
11697 | case IX86_BUILTIN_ANDNPS: | |
11698 | return ix86_expand_timode_binop_builtin (CODE_FOR_sse_nandti3, | |
11699 | arglist, target); | |
11700 | case IX86_BUILTIN_ORPS: | |
11701 | return ix86_expand_timode_binop_builtin (CODE_FOR_sse_iorti3, | |
11702 | arglist, target); | |
11703 | case IX86_BUILTIN_XORPS: | |
11704 | return ix86_expand_timode_binop_builtin (CODE_FOR_sse_xorti3, | |
11705 | arglist, target); | |
11706 | ||
bd793c65 BS |
11707 | case IX86_BUILTIN_LOADAPS: |
11708 | return ix86_expand_unop_builtin (CODE_FOR_sse_movaps, arglist, target, 1); | |
11709 | ||
11710 | case IX86_BUILTIN_LOADUPS: | |
11711 | return ix86_expand_unop_builtin (CODE_FOR_sse_movups, arglist, target, 1); | |
11712 | ||
11713 | case IX86_BUILTIN_STOREAPS: | |
e37af218 | 11714 | return ix86_expand_store_builtin (CODE_FOR_sse_movaps, arglist); |
bd793c65 | 11715 | case IX86_BUILTIN_STOREUPS: |
e37af218 | 11716 | return ix86_expand_store_builtin (CODE_FOR_sse_movups, arglist); |
bd793c65 BS |
11717 | |
11718 | case IX86_BUILTIN_LOADSS: | |
11719 | return ix86_expand_unop_builtin (CODE_FOR_sse_loadss, arglist, target, 1); | |
11720 | ||
11721 | case IX86_BUILTIN_STORESS: | |
e37af218 | 11722 | return ix86_expand_store_builtin (CODE_FOR_sse_storess, arglist); |
bd793c65 | 11723 | |
0f290768 | 11724 | case IX86_BUILTIN_LOADHPS: |
bd793c65 BS |
11725 | case IX86_BUILTIN_LOADLPS: |
11726 | icode = (fcode == IX86_BUILTIN_LOADHPS | |
11727 | ? CODE_FOR_sse_movhps : CODE_FOR_sse_movlps); | |
11728 | arg0 = TREE_VALUE (arglist); | |
11729 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11730 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11731 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11732 | tmode = insn_data[icode].operand[0].mode; | |
11733 | mode0 = insn_data[icode].operand[1].mode; | |
11734 | mode1 = insn_data[icode].operand[2].mode; | |
11735 | ||
11736 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11737 | op0 = copy_to_mode_reg (mode0, op0); | |
11738 | op1 = gen_rtx_MEM (mode1, copy_to_mode_reg (Pmode, op1)); | |
11739 | if (target == 0 | |
11740 | || GET_MODE (target) != tmode | |
11741 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11742 | target = gen_reg_rtx (tmode); | |
11743 | pat = GEN_FCN (icode) (target, op0, op1); | |
11744 | if (! pat) | |
11745 | return 0; | |
11746 | emit_insn (pat); | |
11747 | return target; | |
0f290768 | 11748 | |
bd793c65 BS |
11749 | case IX86_BUILTIN_STOREHPS: |
11750 | case IX86_BUILTIN_STORELPS: | |
11751 | icode = (fcode == IX86_BUILTIN_STOREHPS | |
11752 | ? CODE_FOR_sse_movhps : CODE_FOR_sse_movlps); | |
11753 | arg0 = TREE_VALUE (arglist); | |
11754 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11755 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11756 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11757 | mode0 = insn_data[icode].operand[1].mode; | |
11758 | mode1 = insn_data[icode].operand[2].mode; | |
11759 | ||
11760 | op0 = gen_rtx_MEM (mode0, copy_to_mode_reg (Pmode, op0)); | |
11761 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode1)) | |
11762 | op1 = copy_to_mode_reg (mode1, op1); | |
11763 | ||
11764 | pat = GEN_FCN (icode) (op0, op0, op1); | |
11765 | if (! pat) | |
11766 | return 0; | |
11767 | emit_insn (pat); | |
11768 | return 0; | |
11769 | ||
11770 | case IX86_BUILTIN_MOVNTPS: | |
e37af218 | 11771 | return ix86_expand_store_builtin (CODE_FOR_sse_movntv4sf, arglist); |
bd793c65 | 11772 | case IX86_BUILTIN_MOVNTQ: |
e37af218 | 11773 | return ix86_expand_store_builtin (CODE_FOR_sse_movntdi, arglist); |
bd793c65 BS |
11774 | |
11775 | case IX86_BUILTIN_LDMXCSR: | |
11776 | op0 = expand_expr (TREE_VALUE (arglist), NULL_RTX, VOIDmode, 0); | |
11777 | target = assign_386_stack_local (SImode, 0); | |
11778 | emit_move_insn (target, op0); | |
11779 | emit_insn (gen_ldmxcsr (target)); | |
11780 | return 0; | |
11781 | ||
11782 | case IX86_BUILTIN_STMXCSR: | |
11783 | target = assign_386_stack_local (SImode, 0); | |
11784 | emit_insn (gen_stmxcsr (target)); | |
11785 | return copy_to_mode_reg (SImode, target); | |
11786 | ||
bd793c65 BS |
11787 | case IX86_BUILTIN_SHUFPS: |
11788 | icode = CODE_FOR_sse_shufps; | |
11789 | arg0 = TREE_VALUE (arglist); | |
11790 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11791 | arg2 = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); | |
11792 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11793 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11794 | op2 = expand_expr (arg2, NULL_RTX, VOIDmode, 0); | |
11795 | tmode = insn_data[icode].operand[0].mode; | |
11796 | mode0 = insn_data[icode].operand[1].mode; | |
11797 | mode1 = insn_data[icode].operand[2].mode; | |
11798 | mode2 = insn_data[icode].operand[3].mode; | |
11799 | ||
11800 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode0)) | |
11801 | op0 = copy_to_mode_reg (mode0, op0); | |
11802 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode1)) | |
11803 | op1 = copy_to_mode_reg (mode1, op1); | |
11804 | if (! (*insn_data[icode].operand[3].predicate) (op2, mode2)) | |
11805 | { | |
11806 | /* @@@ better error message */ | |
11807 | error ("mask must be an immediate"); | |
6f1a6c5b | 11808 | return gen_reg_rtx (tmode); |
bd793c65 BS |
11809 | } |
11810 | if (target == 0 | |
11811 | || GET_MODE (target) != tmode | |
11812 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11813 | target = gen_reg_rtx (tmode); | |
11814 | pat = GEN_FCN (icode) (target, op0, op1, op2); | |
11815 | if (! pat) | |
11816 | return 0; | |
11817 | emit_insn (pat); | |
11818 | return target; | |
11819 | ||
11820 | case IX86_BUILTIN_PSHUFW: | |
11821 | icode = CODE_FOR_mmx_pshufw; | |
11822 | arg0 = TREE_VALUE (arglist); | |
11823 | arg1 = TREE_VALUE (TREE_CHAIN (arglist)); | |
11824 | op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0); | |
11825 | op1 = expand_expr (arg1, NULL_RTX, VOIDmode, 0); | |
11826 | tmode = insn_data[icode].operand[0].mode; | |
29628f27 BS |
11827 | mode1 = insn_data[icode].operand[1].mode; |
11828 | mode2 = insn_data[icode].operand[2].mode; | |
bd793c65 | 11829 | |
29628f27 BS |
11830 | if (! (*insn_data[icode].operand[1].predicate) (op0, mode1)) |
11831 | op0 = copy_to_mode_reg (mode1, op0); | |
11832 | if (! (*insn_data[icode].operand[2].predicate) (op1, mode2)) | |
bd793c65 BS |
11833 | { |
11834 | /* @@@ better error message */ | |
11835 | error ("mask must be an immediate"); | |
11836 | return const0_rtx; | |
11837 | } | |
11838 | if (target == 0 | |
11839 | || GET_MODE (target) != tmode | |
11840 | || ! (*insn_data[icode].operand[0].predicate) (target, tmode)) | |
11841 | target = gen_reg_rtx (tmode); | |
29628f27 | 11842 | pat = GEN_FCN (icode) (target, op0, op1); |
bd793c65 BS |
11843 | if (! pat) |
11844 | return 0; | |
11845 | emit_insn (pat); | |
11846 | return target; | |
11847 | ||
47f339cf BS |
11848 | case IX86_BUILTIN_FEMMS: |
11849 | emit_insn (gen_femms ()); | |
11850 | return NULL_RTX; | |
11851 | ||
11852 | case IX86_BUILTIN_PAVGUSB: | |
11853 | return ix86_expand_binop_builtin (CODE_FOR_pavgusb, arglist, target); | |
11854 | ||
11855 | case IX86_BUILTIN_PF2ID: | |
11856 | return ix86_expand_unop_builtin (CODE_FOR_pf2id, arglist, target, 0); | |
11857 | ||
11858 | case IX86_BUILTIN_PFACC: | |
11859 | return ix86_expand_binop_builtin (CODE_FOR_pfacc, arglist, target); | |
11860 | ||
11861 | case IX86_BUILTIN_PFADD: | |
11862 | return ix86_expand_binop_builtin (CODE_FOR_addv2sf3, arglist, target); | |
11863 | ||
11864 | case IX86_BUILTIN_PFCMPEQ: | |
11865 | return ix86_expand_binop_builtin (CODE_FOR_eqv2sf3, arglist, target); | |
11866 | ||
11867 | case IX86_BUILTIN_PFCMPGE: | |
11868 | return ix86_expand_binop_builtin (CODE_FOR_gev2sf3, arglist, target); | |
11869 | ||
11870 | case IX86_BUILTIN_PFCMPGT: | |
11871 | return ix86_expand_binop_builtin (CODE_FOR_gtv2sf3, arglist, target); | |
11872 | ||
11873 | case IX86_BUILTIN_PFMAX: | |
11874 | return ix86_expand_binop_builtin (CODE_FOR_pfmaxv2sf3, arglist, target); | |
11875 | ||
11876 | case IX86_BUILTIN_PFMIN: | |
11877 | return ix86_expand_binop_builtin (CODE_FOR_pfminv2sf3, arglist, target); | |
11878 | ||
11879 | case IX86_BUILTIN_PFMUL: | |
11880 | return ix86_expand_binop_builtin (CODE_FOR_mulv2sf3, arglist, target); | |
11881 | ||
11882 | case IX86_BUILTIN_PFRCP: | |
11883 | return ix86_expand_unop_builtin (CODE_FOR_pfrcpv2sf2, arglist, target, 0); | |
11884 | ||
11885 | case IX86_BUILTIN_PFRCPIT1: | |
11886 | return ix86_expand_binop_builtin (CODE_FOR_pfrcpit1v2sf3, arglist, target); | |
11887 | ||
11888 | case IX86_BUILTIN_PFRCPIT2: | |
11889 | return ix86_expand_binop_builtin (CODE_FOR_pfrcpit2v2sf3, arglist, target); | |
11890 | ||
11891 | case IX86_BUILTIN_PFRSQIT1: | |
11892 | return ix86_expand_binop_builtin (CODE_FOR_pfrsqit1v2sf3, arglist, target); | |
11893 | ||
11894 | case IX86_BUILTIN_PFRSQRT: | |
11895 | return ix86_expand_unop_builtin (CODE_FOR_pfrsqrtv2sf2, arglist, target, 0); | |
11896 | ||
11897 | case IX86_BUILTIN_PFSUB: | |
11898 | return ix86_expand_binop_builtin (CODE_FOR_subv2sf3, arglist, target); | |
11899 | ||
11900 | case IX86_BUILTIN_PFSUBR: | |
11901 | return ix86_expand_binop_builtin (CODE_FOR_subrv2sf3, arglist, target); | |
11902 | ||
11903 | case IX86_BUILTIN_PI2FD: | |
11904 | return ix86_expand_unop_builtin (CODE_FOR_floatv2si2, arglist, target, 0); | |
11905 | ||
11906 | case IX86_BUILTIN_PMULHRW: | |
11907 | return ix86_expand_binop_builtin (CODE_FOR_pmulhrwv4hi3, arglist, target); | |
11908 | ||
47f339cf BS |
11909 | case IX86_BUILTIN_PF2IW: |
11910 | return ix86_expand_unop_builtin (CODE_FOR_pf2iw, arglist, target, 0); | |
11911 | ||
11912 | case IX86_BUILTIN_PFNACC: | |
11913 | return ix86_expand_binop_builtin (CODE_FOR_pfnacc, arglist, target); | |
11914 | ||
11915 | case IX86_BUILTIN_PFPNACC: | |
11916 | return ix86_expand_binop_builtin (CODE_FOR_pfpnacc, arglist, target); | |
11917 | ||
11918 | case IX86_BUILTIN_PI2FW: | |
11919 | return ix86_expand_unop_builtin (CODE_FOR_pi2fw, arglist, target, 0); | |
11920 | ||
11921 | case IX86_BUILTIN_PSWAPDSI: | |
11922 | return ix86_expand_unop_builtin (CODE_FOR_pswapdv2si2, arglist, target, 0); | |
11923 | ||
11924 | case IX86_BUILTIN_PSWAPDSF: | |
11925 | return ix86_expand_unop_builtin (CODE_FOR_pswapdv2sf2, arglist, target, 0); | |
11926 | ||
e37af218 RH |
11927 | case IX86_BUILTIN_SSE_ZERO: |
11928 | target = gen_reg_rtx (V4SFmode); | |
11929 | emit_insn (gen_sse_clrv4sf (target)); | |
bd793c65 BS |
11930 | return target; |
11931 | ||
bd793c65 BS |
11932 | case IX86_BUILTIN_MMX_ZERO: |
11933 | target = gen_reg_rtx (DImode); | |
11934 | emit_insn (gen_mmx_clrdi (target)); | |
11935 | return target; | |
11936 | ||
11937 | default: | |
11938 | break; | |
11939 | } | |
11940 | ||
11941 | for (i = 0, d = bdesc_2arg; i < sizeof (bdesc_2arg) / sizeof *d; i++, d++) | |
11942 | if (d->code == fcode) | |
11943 | { | |
11944 | /* Compares are treated specially. */ | |
11945 | if (d->icode == CODE_FOR_maskcmpv4sf3 | |
11946 | || d->icode == CODE_FOR_vmmaskcmpv4sf3 | |
11947 | || d->icode == CODE_FOR_maskncmpv4sf3 | |
11948 | || d->icode == CODE_FOR_vmmaskncmpv4sf3) | |
11949 | return ix86_expand_sse_compare (d, arglist, target); | |
11950 | ||
11951 | return ix86_expand_binop_builtin (d->icode, arglist, target); | |
11952 | } | |
11953 | ||
11954 | for (i = 0, d = bdesc_1arg; i < sizeof (bdesc_1arg) / sizeof *d; i++, d++) | |
11955 | if (d->code == fcode) | |
11956 | return ix86_expand_unop_builtin (d->icode, arglist, target, 0); | |
0f290768 | 11957 | |
bd793c65 BS |
11958 | for (i = 0, d = bdesc_comi; i < sizeof (bdesc_comi) / sizeof *d; i++, d++) |
11959 | if (d->code == fcode) | |
11960 | return ix86_expand_sse_comi (d, arglist, target); | |
0f290768 | 11961 | |
bd793c65 BS |
11962 | /* @@@ Should really do something sensible here. */ |
11963 | return 0; | |
bd793c65 | 11964 | } |
4211a8fb JH |
11965 | |
11966 | /* Store OPERAND to the memory after reload is completed. This means | |
f710504c | 11967 | that we can't easily use assign_stack_local. */ |
4211a8fb JH |
11968 | rtx |
11969 | ix86_force_to_memory (mode, operand) | |
11970 | enum machine_mode mode; | |
11971 | rtx operand; | |
11972 | { | |
898d374d | 11973 | rtx result; |
4211a8fb JH |
11974 | if (!reload_completed) |
11975 | abort (); | |
898d374d JH |
11976 | if (TARGET_64BIT && TARGET_RED_ZONE) |
11977 | { | |
11978 | result = gen_rtx_MEM (mode, | |
11979 | gen_rtx_PLUS (Pmode, | |
11980 | stack_pointer_rtx, | |
11981 | GEN_INT (-RED_ZONE_SIZE))); | |
11982 | emit_move_insn (result, operand); | |
11983 | } | |
11984 | else if (TARGET_64BIT && !TARGET_RED_ZONE) | |
4211a8fb | 11985 | { |
898d374d | 11986 | switch (mode) |
4211a8fb | 11987 | { |
898d374d JH |
11988 | case HImode: |
11989 | case SImode: | |
11990 | operand = gen_lowpart (DImode, operand); | |
11991 | /* FALLTHRU */ | |
11992 | case DImode: | |
4211a8fb | 11993 | emit_insn ( |
898d374d JH |
11994 | gen_rtx_SET (VOIDmode, |
11995 | gen_rtx_MEM (DImode, | |
11996 | gen_rtx_PRE_DEC (DImode, | |
11997 | stack_pointer_rtx)), | |
11998 | operand)); | |
11999 | break; | |
12000 | default: | |
12001 | abort (); | |
12002 | } | |
12003 | result = gen_rtx_MEM (mode, stack_pointer_rtx); | |
12004 | } | |
12005 | else | |
12006 | { | |
12007 | switch (mode) | |
12008 | { | |
12009 | case DImode: | |
12010 | { | |
12011 | rtx operands[2]; | |
12012 | split_di (&operand, 1, operands, operands + 1); | |
12013 | emit_insn ( | |
12014 | gen_rtx_SET (VOIDmode, | |
12015 | gen_rtx_MEM (SImode, | |
12016 | gen_rtx_PRE_DEC (Pmode, | |
12017 | stack_pointer_rtx)), | |
12018 | operands[1])); | |
12019 | emit_insn ( | |
12020 | gen_rtx_SET (VOIDmode, | |
12021 | gen_rtx_MEM (SImode, | |
12022 | gen_rtx_PRE_DEC (Pmode, | |
12023 | stack_pointer_rtx)), | |
12024 | operands[0])); | |
12025 | } | |
12026 | break; | |
12027 | case HImode: | |
12028 | /* It is better to store HImodes as SImodes. */ | |
12029 | if (!TARGET_PARTIAL_REG_STALL) | |
12030 | operand = gen_lowpart (SImode, operand); | |
12031 | /* FALLTHRU */ | |
12032 | case SImode: | |
4211a8fb | 12033 | emit_insn ( |
898d374d JH |
12034 | gen_rtx_SET (VOIDmode, |
12035 | gen_rtx_MEM (GET_MODE (operand), | |
12036 | gen_rtx_PRE_DEC (SImode, | |
12037 | stack_pointer_rtx)), | |
12038 | operand)); | |
12039 | break; | |
12040 | default: | |
12041 | abort (); | |
4211a8fb | 12042 | } |
898d374d | 12043 | result = gen_rtx_MEM (mode, stack_pointer_rtx); |
4211a8fb | 12044 | } |
898d374d | 12045 | return result; |
4211a8fb JH |
12046 | } |
12047 | ||
12048 | /* Free operand from the memory. */ | |
12049 | void | |
12050 | ix86_free_from_memory (mode) | |
12051 | enum machine_mode mode; | |
12052 | { | |
898d374d JH |
12053 | if (!TARGET_64BIT || !TARGET_RED_ZONE) |
12054 | { | |
12055 | int size; | |
12056 | ||
12057 | if (mode == DImode || TARGET_64BIT) | |
12058 | size = 8; | |
12059 | else if (mode == HImode && TARGET_PARTIAL_REG_STALL) | |
12060 | size = 2; | |
12061 | else | |
12062 | size = 4; | |
12063 | /* Use LEA to deallocate stack space. In peephole2 it will be converted | |
12064 | to pop or add instruction if registers are available. */ | |
12065 | emit_insn (gen_rtx_SET (VOIDmode, stack_pointer_rtx, | |
12066 | gen_rtx_PLUS (Pmode, stack_pointer_rtx, | |
12067 | GEN_INT (size)))); | |
12068 | } | |
4211a8fb | 12069 | } |
a946dd00 | 12070 | |
f84aa48a JH |
12071 | /* Put float CONST_DOUBLE in the constant pool instead of fp regs. |
12072 | QImode must go into class Q_REGS. | |
12073 | Narrow ALL_REGS to GENERAL_REGS. This supports allowing movsf and | |
892a2d68 | 12074 | movdf to do mem-to-mem moves through integer regs. */ |
f84aa48a JH |
12075 | enum reg_class |
12076 | ix86_preferred_reload_class (x, class) | |
12077 | rtx x; | |
12078 | enum reg_class class; | |
12079 | { | |
12080 | if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) != VOIDmode) | |
12081 | { | |
12082 | /* SSE can't load any constant directly yet. */ | |
12083 | if (SSE_CLASS_P (class)) | |
12084 | return NO_REGS; | |
12085 | /* Floats can load 0 and 1. */ | |
12086 | if (MAYBE_FLOAT_CLASS_P (class) && standard_80387_constant_p (x)) | |
12087 | { | |
12088 | /* Limit class to non-SSE. Use GENERAL_REGS if possible. */ | |
12089 | if (MAYBE_SSE_CLASS_P (class)) | |
12090 | return (reg_class_subset_p (class, GENERAL_REGS) | |
12091 | ? GENERAL_REGS : FLOAT_REGS); | |
12092 | else | |
12093 | return class; | |
12094 | } | |
12095 | /* General regs can load everything. */ | |
12096 | if (reg_class_subset_p (class, GENERAL_REGS)) | |
12097 | return GENERAL_REGS; | |
12098 | /* In case we haven't resolved FLOAT or SSE yet, give up. */ | |
12099 | if (MAYBE_FLOAT_CLASS_P (class) || MAYBE_SSE_CLASS_P (class)) | |
12100 | return NO_REGS; | |
12101 | } | |
12102 | if (MAYBE_MMX_CLASS_P (class) && CONSTANT_P (x)) | |
12103 | return NO_REGS; | |
12104 | if (GET_MODE (x) == QImode && ! reg_class_subset_p (class, Q_REGS)) | |
12105 | return Q_REGS; | |
12106 | return class; | |
12107 | } | |
12108 | ||
12109 | /* If we are copying between general and FP registers, we need a memory | |
12110 | location. The same is true for SSE and MMX registers. | |
12111 | ||
12112 | The macro can't work reliably when one of the CLASSES is class containing | |
12113 | registers from multiple units (SSE, MMX, integer). We avoid this by never | |
12114 | combining those units in single alternative in the machine description. | |
12115 | Ensure that this constraint holds to avoid unexpected surprises. | |
12116 | ||
12117 | When STRICT is false, we are being called from REGISTER_MOVE_COST, so do not | |
12118 | enforce these sanity checks. */ | |
12119 | int | |
12120 | ix86_secondary_memory_needed (class1, class2, mode, strict) | |
12121 | enum reg_class class1, class2; | |
12122 | enum machine_mode mode; | |
12123 | int strict; | |
12124 | { | |
12125 | if (MAYBE_FLOAT_CLASS_P (class1) != FLOAT_CLASS_P (class1) | |
12126 | || MAYBE_FLOAT_CLASS_P (class2) != FLOAT_CLASS_P (class2) | |
12127 | || MAYBE_SSE_CLASS_P (class1) != SSE_CLASS_P (class1) | |
12128 | || MAYBE_SSE_CLASS_P (class2) != SSE_CLASS_P (class2) | |
12129 | || MAYBE_MMX_CLASS_P (class1) != MMX_CLASS_P (class1) | |
12130 | || MAYBE_MMX_CLASS_P (class2) != MMX_CLASS_P (class2)) | |
12131 | { | |
12132 | if (strict) | |
12133 | abort (); | |
12134 | else | |
12135 | return 1; | |
12136 | } | |
12137 | return (FLOAT_CLASS_P (class1) != FLOAT_CLASS_P (class2) | |
12138 | || (SSE_CLASS_P (class1) != SSE_CLASS_P (class2) | |
12139 | && (mode) != SImode) | |
12140 | || (MMX_CLASS_P (class1) != MMX_CLASS_P (class2) | |
12141 | && (mode) != SImode)); | |
12142 | } | |
12143 | /* Return the cost of moving data from a register in class CLASS1 to | |
a4f31c00 | 12144 | one in class CLASS2. |
f84aa48a JH |
12145 | |
12146 | It is not required that the cost always equal 2 when FROM is the same as TO; | |
12147 | on some machines it is expensive to move between registers if they are not | |
12148 | general registers. */ | |
12149 | int | |
12150 | ix86_register_move_cost (mode, class1, class2) | |
12151 | enum machine_mode mode; | |
12152 | enum reg_class class1, class2; | |
12153 | { | |
12154 | /* In case we require secondary memory, compute cost of the store followed | |
12155 | by load. In case of copying from general_purpose_register we may emit | |
12156 | multiple stores followed by single load causing memory size mismatch | |
12157 | stall. Count this as arbitarily high cost of 20. */ | |
12158 | if (ix86_secondary_memory_needed (class1, class2, mode, 0)) | |
12159 | { | |
92d0fb09 | 12160 | int add_cost = 0; |
62415523 | 12161 | if (CLASS_MAX_NREGS (class1, mode) > CLASS_MAX_NREGS (class2, mode)) |
92d0fb09 | 12162 | add_cost = 20; |
62415523 | 12163 | return (MEMORY_MOVE_COST (mode, class1, 0) |
92d0fb09 | 12164 | + MEMORY_MOVE_COST (mode, class2, 1) + add_cost); |
f84aa48a | 12165 | } |
92d0fb09 | 12166 | /* Moves between SSE/MMX and integer unit are expensive. */ |
62415523 JH |
12167 | if (MMX_CLASS_P (class1) != MMX_CLASS_P (class2) |
12168 | || SSE_CLASS_P (class1) != SSE_CLASS_P (class2)) | |
fa79946e JH |
12169 | return ix86_cost->mmxsse_to_integer; |
12170 | if (MAYBE_FLOAT_CLASS_P (class1)) | |
12171 | return ix86_cost->fp_move; | |
12172 | if (MAYBE_SSE_CLASS_P (class1)) | |
12173 | return ix86_cost->sse_move; | |
12174 | if (MAYBE_MMX_CLASS_P (class1)) | |
12175 | return ix86_cost->mmx_move; | |
f84aa48a JH |
12176 | return 2; |
12177 | } | |
12178 | ||
a946dd00 JH |
12179 | /* Return 1 if hard register REGNO can hold a value of machine-mode MODE. */ |
12180 | int | |
12181 | ix86_hard_regno_mode_ok (regno, mode) | |
12182 | int regno; | |
12183 | enum machine_mode mode; | |
12184 | { | |
12185 | /* Flags and only flags can only hold CCmode values. */ | |
12186 | if (CC_REGNO_P (regno)) | |
12187 | return GET_MODE_CLASS (mode) == MODE_CC; | |
12188 | if (GET_MODE_CLASS (mode) == MODE_CC | |
12189 | || GET_MODE_CLASS (mode) == MODE_RANDOM | |
12190 | || GET_MODE_CLASS (mode) == MODE_PARTIAL_INT) | |
12191 | return 0; | |
12192 | if (FP_REGNO_P (regno)) | |
12193 | return VALID_FP_MODE_P (mode); | |
12194 | if (SSE_REGNO_P (regno)) | |
12195 | return VALID_SSE_REG_MODE (mode); | |
12196 | if (MMX_REGNO_P (regno)) | |
47f339cf | 12197 | return VALID_MMX_REG_MODE (mode) || VALID_MMX_REG_MODE_3DNOW (mode); |
a946dd00 JH |
12198 | /* We handle both integer and floats in the general purpose registers. |
12199 | In future we should be able to handle vector modes as well. */ | |
12200 | if (!VALID_INT_MODE_P (mode) && !VALID_FP_MODE_P (mode)) | |
12201 | return 0; | |
12202 | /* Take care for QImode values - they can be in non-QI regs, but then | |
12203 | they do cause partial register stalls. */ | |
d2836273 | 12204 | if (regno < 4 || mode != QImode || TARGET_64BIT) |
a946dd00 JH |
12205 | return 1; |
12206 | return reload_in_progress || reload_completed || !TARGET_PARTIAL_REG_STALL; | |
12207 | } | |
fa79946e JH |
12208 | |
12209 | /* Return the cost of moving data of mode M between a | |
12210 | register and memory. A value of 2 is the default; this cost is | |
12211 | relative to those in `REGISTER_MOVE_COST'. | |
12212 | ||
12213 | If moving between registers and memory is more expensive than | |
12214 | between two registers, you should define this macro to express the | |
a4f31c00 AJ |
12215 | relative cost. |
12216 | ||
fa79946e JH |
12217 | Model also increased moving costs of QImode registers in non |
12218 | Q_REGS classes. | |
12219 | */ | |
12220 | int | |
12221 | ix86_memory_move_cost (mode, class, in) | |
12222 | enum machine_mode mode; | |
12223 | enum reg_class class; | |
12224 | int in; | |
12225 | { | |
12226 | if (FLOAT_CLASS_P (class)) | |
12227 | { | |
12228 | int index; | |
12229 | switch (mode) | |
12230 | { | |
12231 | case SFmode: | |
12232 | index = 0; | |
12233 | break; | |
12234 | case DFmode: | |
12235 | index = 1; | |
12236 | break; | |
12237 | case XFmode: | |
12238 | case TFmode: | |
12239 | index = 2; | |
12240 | break; | |
12241 | default: | |
12242 | return 100; | |
12243 | } | |
12244 | return in ? ix86_cost->fp_load [index] : ix86_cost->fp_store [index]; | |
12245 | } | |
12246 | if (SSE_CLASS_P (class)) | |
12247 | { | |
12248 | int index; | |
12249 | switch (GET_MODE_SIZE (mode)) | |
12250 | { | |
12251 | case 4: | |
12252 | index = 0; | |
12253 | break; | |
12254 | case 8: | |
12255 | index = 1; | |
12256 | break; | |
12257 | case 16: | |
12258 | index = 2; | |
12259 | break; | |
12260 | default: | |
12261 | return 100; | |
12262 | } | |
12263 | return in ? ix86_cost->sse_load [index] : ix86_cost->sse_store [index]; | |
12264 | } | |
12265 | if (MMX_CLASS_P (class)) | |
12266 | { | |
12267 | int index; | |
12268 | switch (GET_MODE_SIZE (mode)) | |
12269 | { | |
12270 | case 4: | |
12271 | index = 0; | |
12272 | break; | |
12273 | case 8: | |
12274 | index = 1; | |
12275 | break; | |
12276 | default: | |
12277 | return 100; | |
12278 | } | |
12279 | return in ? ix86_cost->mmx_load [index] : ix86_cost->mmx_store [index]; | |
12280 | } | |
12281 | switch (GET_MODE_SIZE (mode)) | |
12282 | { | |
12283 | case 1: | |
12284 | if (in) | |
12285 | return (Q_CLASS_P (class) ? ix86_cost->int_load[0] | |
12286 | : ix86_cost->movzbl_load); | |
12287 | else | |
12288 | return (Q_CLASS_P (class) ? ix86_cost->int_store[0] | |
12289 | : ix86_cost->int_store[0] + 4); | |
12290 | break; | |
12291 | case 2: | |
12292 | return in ? ix86_cost->int_load[1] : ix86_cost->int_store[1]; | |
12293 | default: | |
12294 | /* Compute number of 32bit moves needed. TFmode is moved as XFmode. */ | |
12295 | if (mode == TFmode) | |
12296 | mode = XFmode; | |
3bb7e126 | 12297 | return ((in ? ix86_cost->int_load[2] : ix86_cost->int_store[2]) |
fa79946e JH |
12298 | * (int) GET_MODE_SIZE (mode) / 4); |
12299 | } | |
12300 | } | |
0ecf09f9 | 12301 | |
2cc07db4 RH |
12302 | #ifdef DO_GLOBAL_CTORS_BODY |
12303 | static void | |
12304 | ix86_svr3_asm_out_constructor (symbol, priority) | |
12305 | rtx symbol; | |
12306 | int priority ATTRIBUTE_UNUSED; | |
12307 | { | |
12308 | init_section (); | |
12309 | fputs ("\tpushl $", asm_out_file); | |
12310 | assemble_name (asm_out_file, XSTR (symbol, 0)); | |
12311 | fputc ('\n', asm_out_file); | |
12312 | } | |
12313 | #endif |