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6f29feb1 | 1 | /* Register Transfer Language (RTL) definitions for GNU C-Compiler |
af841dbd JL |
2 | Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000 Free Software Foundation, Inc. | |
6f29feb1 JW |
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 | |
e99215a3 RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
6f29feb1 | 21 | |
ac957f13 JL |
22 | #ifndef _RTL_H |
23 | #define _RTL_H | |
6f29feb1 | 24 | |
36edd3cc BS |
25 | struct function; |
26 | ||
6f29feb1 JW |
27 | #include "machmode.h" |
28 | ||
29 | #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ | |
1cfc3092 | 30 | #undef FLOAT /* Likewise. */ |
ac889e46 | 31 | #undef ABS /* Likewise. */ |
71ae9cc6 | 32 | #undef PC /* Likewise. */ |
6f29feb1 | 33 | |
88efc60a RK |
34 | #ifndef TREE_CODE |
35 | union tree_node; | |
36 | #endif | |
37 | ||
6f29feb1 JW |
38 | /* Register Transfer Language EXPRESSIONS CODES */ |
39 | ||
40 | #define RTX_CODE enum rtx_code | |
41 | enum rtx_code { | |
42 | ||
43 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , | |
44 | #include "rtl.def" /* rtl expressions are documented here */ | |
45 | #undef DEF_RTL_EXPR | |
46 | ||
6dc42e49 | 47 | LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for |
6f29feb1 | 48 | NUM_RTX_CODE. |
6dc42e49 | 49 | Assumes default enum value assignment. */ |
6f29feb1 JW |
50 | |
51 | #define NUM_RTX_CODE ((int)LAST_AND_UNUSED_RTX_CODE) | |
52 | /* The cast here, saves many elsewhere. */ | |
53 | ||
aa0b4465 | 54 | extern const int rtx_length[]; |
0f41302f | 55 | #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) |
6f29feb1 | 56 | |
5f06c983 | 57 | extern const char * const rtx_name[]; |
0f41302f | 58 | #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) |
6f29feb1 | 59 | |
aa0b4465 | 60 | extern const char * const rtx_format[]; |
0f41302f | 61 | #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) |
6f29feb1 | 62 | |
1f9a015e | 63 | extern const char rtx_class[]; |
0f41302f | 64 | #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) |
6f29feb1 | 65 | \f |
33f7f353 JR |
66 | /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label |
67 | relative to which the offsets are calculated, as explained in rtl.def. */ | |
68 | typedef struct | |
69 | { | |
70 | /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ | |
71 | unsigned min_align: 8; | |
72 | /* Flags: */ | |
73 | unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ | |
74 | unsigned min_after_vec: 1; /* minimum address target label is after the ADDR_DIFF_VEC. */ | |
75 | unsigned max_after_vec: 1; /* maximum address target label is after the ADDR_DIFF_VEC. */ | |
76 | unsigned min_after_base: 1; /* minimum address target label is after BASE. */ | |
77 | unsigned max_after_base: 1; /* maximum address target label is after BASE. */ | |
78 | /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ | |
79 | unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ | |
80 | unsigned : 2; | |
81 | unsigned scale : 8; | |
82 | } addr_diff_vec_flags; | |
83 | ||
6f29feb1 JW |
84 | /* Common union for an element of an rtx. */ |
85 | ||
86 | typedef union rtunion_def | |
87 | { | |
5f4f0e22 | 88 | HOST_WIDE_INT rtwint; |
6f29feb1 JW |
89 | int rtint; |
90 | char *rtstr; | |
91 | struct rtx_def *rtx; | |
92 | struct rtvec_def *rtvec; | |
93 | enum machine_mode rttype; | |
33f7f353 | 94 | addr_diff_vec_flags rt_addr_diff_vec_flags; |
0dfa1860 MM |
95 | struct bitmap_head_def *rtbit; |
96 | union tree_node *rttree; | |
e881bb1b | 97 | struct basic_block_def *bb; |
6f29feb1 JW |
98 | } rtunion; |
99 | ||
100 | /* RTL expression ("rtx"). */ | |
101 | ||
102 | typedef struct rtx_def | |
103 | { | |
104 | #ifdef ONLY_INT_FIELDS | |
10c344b4 | 105 | #ifdef CODE_FIELD_BUG |
005537df | 106 | unsigned int code : 16; |
10c344b4 | 107 | #else |
6f29feb1 | 108 | unsigned short code; |
10c344b4 | 109 | #endif |
6f29feb1 JW |
110 | #else |
111 | /* The kind of expression this is. */ | |
005537df | 112 | enum rtx_code code : 16; |
6f29feb1 | 113 | #endif |
18def38f | 114 | |
6f29feb1 JW |
115 | /* The kind of value the expression has. */ |
116 | #ifdef ONLY_INT_FIELDS | |
117 | int mode : 8; | |
118 | #else | |
119 | enum machine_mode mode : 8; | |
120 | #endif | |
10c5bca8 | 121 | /* LINK_COST_ZERO in an INSN_LIST. */ |
6f29feb1 | 122 | unsigned int jump : 1; |
10c5bca8 | 123 | /* LINK_COST_FREE in an INSN_LIST. */ |
6f29feb1 JW |
124 | unsigned int call : 1; |
125 | /* 1 in a MEM or REG if value of this expression will never change | |
126 | during the current function, even though it is not | |
127 | manifestly constant. | |
07be3989 | 128 | 1 in a SUBREG if it is from a promoted variable that is unsigned. |
6f29feb1 JW |
129 | 1 in a SYMBOL_REF if it addresses something in the per-function |
130 | constants pool. | |
131 | 1 in a CALL_INSN if it is a const call. | |
132 | 1 in a JUMP_INSN if it is a branch that should be annulled. Valid from | |
133 | reorg until end of compilation; cleared before used. */ | |
134 | unsigned int unchanging : 1; | |
135 | /* 1 in a MEM expression if contents of memory are volatile. | |
136 | 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL or BARRIER | |
137 | if it is deleted. | |
138 | 1 in a REG expression if corresponds to a variable declared by the user. | |
139 | 0 for an internally generated temporary. | |
2a406d2a RS |
140 | In a SYMBOL_REF, this flag is used for machine-specific purposes. |
141 | In a LABEL_REF or in a REG_LABEL note, this is LABEL_REF_NONLOCAL_P. */ | |
6f29feb1 | 142 | unsigned int volatil : 1; |
8358a974 | 143 | /* 1 in a MEM referring to a field of an aggregate. |
6f29feb1 JW |
144 | 0 if the MEM was a variable or the result of a * operator in C; |
145 | 1 if it was the result of a . or -> operator (on a struct) in C. | |
146 | 1 in a REG if the register is used only in exit code a loop. | |
07be3989 RK |
147 | 1 in a SUBREG expression if was generated from a variable with a |
148 | promoted mode. | |
6f29feb1 JW |
149 | 1 in a CODE_LABEL if the label is used for nonlocal gotos |
150 | and must not be deleted even if its count is zero. | |
151 | 1 in a LABEL_REF if this is a reference to a label outside the | |
152 | current loop. | |
153 | 1 in an INSN, JUMP_INSN, or CALL_INSN if this insn must be scheduled | |
d45cf215 | 154 | together with the preceding insn. Valid only within sched. |
6f29feb1 JW |
155 | 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and |
156 | from the target of a branch. Valid from reorg until end of compilation; | |
157 | cleared before used. */ | |
158 | unsigned int in_struct : 1; | |
159 | /* 1 if this rtx is used. This is used for copying shared structure. | |
160 | See `unshare_all_rtl'. | |
161 | In a REG, this is not needed for that purpose, and used instead | |
162 | in `leaf_renumber_regs_insn'. | |
163 | In a SYMBOL_REF, means that emit_library_call | |
164 | has used it as the function. */ | |
165 | unsigned int used : 1; | |
166 | /* Nonzero if this rtx came from procedure integration. | |
167 | In a REG, nonzero means this reg refers to the return value | |
168 | of the current function. */ | |
169 | unsigned integrated : 1; | |
b664de3a | 170 | /* 1 in an INSN or a SET if this rtx is related to the call frame, |
c6df88cb MM |
171 | either changing how we compute the frame address or saving and |
172 | restoring registers in the prologue and epilogue. | |
173 | 1 in a MEM if the MEM refers to a scalar, rather than a member of | |
174 | an aggregate. */ | |
469ac993 | 175 | unsigned frame_related : 1; |
0a25f1f5 | 176 | |
6f29feb1 JW |
177 | /* The first element of the operands of this rtx. |
178 | The number of operands and their types are controlled | |
179 | by the `code' field, according to rtl.def. */ | |
180 | rtunion fld[1]; | |
181 | } *rtx; | |
182 | ||
183 | #define NULL_RTX (rtx) 0 | |
184 | ||
185 | /* Define macros to access the `code' field of the rtx. */ | |
186 | ||
187 | #ifdef SHORT_ENUM_BUG | |
188 | #define GET_CODE(RTX) ((enum rtx_code) ((RTX)->code)) | |
189 | #define PUT_CODE(RTX, CODE) ((RTX)->code = ((short) (CODE))) | |
190 | #else | |
191 | #define GET_CODE(RTX) ((RTX)->code) | |
192 | #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) | |
193 | #endif | |
194 | ||
195 | #define GET_MODE(RTX) ((RTX)->mode) | |
196 | #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) | |
197 | ||
198 | #define RTX_INTEGRATED_P(RTX) ((RTX)->integrated) | |
199 | #define RTX_UNCHANGING_P(RTX) ((RTX)->unchanging) | |
469ac993 | 200 | #define RTX_FRAME_RELATED_P(RTX) ((RTX)->frame_related) |
6f29feb1 JW |
201 | |
202 | /* RTL vector. These appear inside RTX's when there is a need | |
203 | for a variable number of things. The principle use is inside | |
204 | PARALLEL expressions. */ | |
205 | ||
206 | typedef struct rtvec_def{ | |
e9a25f70 | 207 | int num_elem; /* number of elements */ |
8f985ec4 | 208 | struct rtx_def *elem[1]; |
6f29feb1 JW |
209 | } *rtvec; |
210 | ||
211 | #define NULL_RTVEC (rtvec) 0 | |
212 | ||
213 | #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) | |
e9a25f70 | 214 | #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) |
6f29feb1 | 215 | |
6f29feb1 JW |
216 | /* 1 if X is a REG. */ |
217 | ||
218 | #define REG_P(X) (GET_CODE (X) == REG) | |
219 | ||
220 | /* 1 if X is a constant value that is an integer. */ | |
221 | ||
222 | #define CONSTANT_P(X) \ | |
223 | (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ | |
224 | || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \ | |
ee5332b8 RH |
225 | || GET_CODE (X) == CONST || GET_CODE (X) == HIGH \ |
226 | || GET_CODE (X) == CONSTANT_P_RTX) | |
6f29feb1 JW |
227 | |
228 | /* General accessor macros for accessing the fields of an rtx. */ | |
229 | ||
f4524c9e | 230 | #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) |
ef178af3 ZW |
231 | /* The bit with a star outside the statement expr and an & inside is |
232 | so that N can be evaluated only once. */ | |
233 | #define RTL_CHECK1(RTX, N, C1) \ | |
83ab3839 | 234 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
235 | enum rtx_code _code = GET_CODE (_rtx); \ |
236 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
237 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ | |
238 | __PRETTY_FUNCTION__); \ | |
239 | if (GET_RTX_FORMAT(_code)[_n] != C1) \ | |
240 | rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ | |
241 | __PRETTY_FUNCTION__); \ | |
242 | &_rtx->fld[_n]; })) | |
243 | ||
244 | #define RTL_CHECK2(RTX, N, C1, C2) \ | |
83ab3839 | 245 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
246 | enum rtx_code _code = GET_CODE (_rtx); \ |
247 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
248 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ | |
249 | __PRETTY_FUNCTION__); \ | |
250 | if (GET_RTX_FORMAT(_code)[_n] != C1 \ | |
251 | && GET_RTX_FORMAT(_code)[_n] != C2) \ | |
252 | rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ | |
253 | __PRETTY_FUNCTION__); \ | |
254 | &_rtx->fld[_n]; })) | |
255 | ||
83ab3839 RH |
256 | #define RTL_CHECKC1(RTX, N, C) \ |
257 | (*({ rtx _rtx = (RTX); int _n = (N); \ | |
258 | if (GET_CODE (_rtx) != C) \ | |
259 | rtl_check_failed_code1 (_rtx, C, __FILE__, __LINE__, \ | |
260 | __PRETTY_FUNCTION__); \ | |
261 | &_rtx->fld[_n]; })) | |
262 | ||
263 | #define RTL_CHECKC2(RTX, N, C1, C2) \ | |
264 | (*({ rtx _rtx = (RTX); int _n = (N); \ | |
265 | enum rtx_code _code = GET_CODE (_rtx); \ | |
266 | if (_code != C1 && _code != C2) \ | |
267 | rtl_check_failed_code2 (_rtx, C1, C2, __FILE__, __LINE__, \ | |
268 | __PRETTY_FUNCTION__); \ | |
269 | &_rtx->fld[_n]; })) | |
270 | ||
ef178af3 | 271 | #define RTVEC_ELT(RTVEC, I) \ |
83ab3839 | 272 | (*({ rtvec _rtvec = (RTVEC); int _i = (I); \ |
ef178af3 ZW |
273 | if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ |
274 | rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ | |
275 | __PRETTY_FUNCTION__); \ | |
276 | &_rtvec->elem[_i]; })) | |
277 | ||
cdadb1dd | 278 | extern void rtl_check_failed_bounds PARAMS ((rtx, int, |
ef178af3 ZW |
279 | const char *, int, const char *)) |
280 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 281 | extern void rtl_check_failed_type1 PARAMS ((rtx, int, int, |
ef178af3 ZW |
282 | const char *, int, const char *)) |
283 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 284 | extern void rtl_check_failed_type2 PARAMS ((rtx, int, int, int, |
ef178af3 ZW |
285 | const char *, int, const char *)) |
286 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 287 | extern void rtl_check_failed_code1 PARAMS ((rtx, enum rtx_code, |
83ab3839 RH |
288 | const char *, int, const char *)) |
289 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 290 | extern void rtl_check_failed_code2 PARAMS ((rtx, enum rtx_code, enum rtx_code, |
83ab3839 RH |
291 | const char *, int, const char *)) |
292 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 293 | extern void rtvec_check_failed_bounds PARAMS ((rtvec, int, |
ef178af3 ZW |
294 | const char *, int, const char *)) |
295 | ATTRIBUTE_NORETURN; | |
296 | ||
f4524c9e | 297 | #else /* not ENABLE_RTL_CHECKING */ |
ef178af3 | 298 | |
83ab3839 RH |
299 | #define RTL_CHECK1(RTX, N, C1) ((RTX)->fld[N]) |
300 | #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->fld[N]) | |
301 | #define RTL_CHECKC1(RTX, N, C) ((RTX)->fld[N]) | |
818a3b15 | 302 | #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->fld[N]) |
83ab3839 | 303 | #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) |
ef178af3 ZW |
304 | |
305 | #endif | |
306 | ||
307 | #define XWINT(RTX, N) (RTL_CHECK1(RTX, N, 'w').rtwint) | |
308 | #define XINT(RTX, N) (RTL_CHECK2(RTX, N, 'i', 'n').rtint) | |
309 | #define XSTR(RTX, N) (RTL_CHECK2(RTX, N, 's', 'S').rtstr) | |
310 | #define XEXP(RTX, N) (RTL_CHECK2(RTX, N, 'e', 'u').rtx) | |
311 | #define XVEC(RTX, N) (RTL_CHECK2(RTX, N, 'E', 'V').rtvec) | |
312 | #define XMODE(RTX, N) (RTL_CHECK1(RTX, N, 'M').rttype) | |
313 | #define XBITMAP(RTX, N) (RTL_CHECK1(RTX, N, 'b').rtbit) | |
314 | #define XTREE(RTX, N) (RTL_CHECK1(RTX, N, 't').rttree) | |
315 | #define XBBDEF(RTX, N) (RTL_CHECK1(RTX, N, 'B').bb) | |
316 | ||
317 | #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) | |
318 | #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) | |
319 | ||
320 | /* These are like XWINT, etc. except that they expect a '0' field instead | |
321 | of the normal type code. */ | |
322 | ||
323 | #define X0WINT(RTX, N) (RTL_CHECK1(RTX, N, '0').rtwint) | |
324 | #define X0INT(RTX, N) (RTL_CHECK1(RTX, N, '0').rtint) | |
325 | #define X0STR(RTX, N) (RTL_CHECK1(RTX, N, '0').rtstr) | |
326 | #define X0EXP(RTX, N) (RTL_CHECK1(RTX, N, '0').rtx) | |
327 | #define X0VEC(RTX, N) (RTL_CHECK1(RTX, N, '0').rtvec) | |
328 | #define X0MODE(RTX, N) (RTL_CHECK1(RTX, N, '0').rttype) | |
329 | #define X0BITMAP(RTX, N) (RTL_CHECK1(RTX, N, '0').rtbit) | |
330 | #define X0TREE(RTX, N) (RTL_CHECK1(RTX, N, '0').rttree) | |
331 | #define X0BBDEF(RTX, N) (RTL_CHECK1(RTX, N, '0').bb) | |
332 | #define X0ADVFLAGS(RTX, N) (RTL_CHECK1(RTX, N, '0').rt_addr_diff_vec_flags) | |
0dfa1860 | 333 | |
83ab3839 RH |
334 | #define XCWINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtwint) |
335 | #define XCINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtint) | |
336 | #define XCSTR(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtstr) | |
337 | #define XCEXP(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtx) | |
338 | #define XCVEC(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtvec) | |
339 | #define XCMODE(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rttype) | |
340 | #define XCBITMAP(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtbit) | |
341 | #define XCTREE(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rttree) | |
342 | #define XCBBDEF(RTX, N, C) (RTL_CHECKC1(RTX, N, C).bb) | |
343 | #define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rt_addr_diff_vec_flags) | |
344 | ||
345 | #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) | |
346 | #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) | |
347 | ||
348 | #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2(RTX, N, C1, C2).rtx) | |
6f29feb1 JW |
349 | \f |
350 | /* ACCESS MACROS for particular fields of insns. */ | |
351 | ||
352 | /* Holds a unique number for each insn. | |
353 | These are not necessarily sequentially increasing. */ | |
8f985ec4 | 354 | #define INSN_UID(INSN) XINT(INSN, 0) |
6f29feb1 JW |
355 | |
356 | /* Chain insns together in sequence. */ | |
8f985ec4 ZW |
357 | #define PREV_INSN(INSN) XEXP(INSN, 1) |
358 | #define NEXT_INSN(INSN) XEXP(INSN, 2) | |
6f29feb1 JW |
359 | |
360 | /* The body of an insn. */ | |
8f985ec4 | 361 | #define PATTERN(INSN) XEXP(INSN, 3) |
6f29feb1 JW |
362 | |
363 | /* Code number of instruction, from when it was recognized. | |
364 | -1 means this instruction has not been recognized yet. */ | |
8f985ec4 | 365 | #define INSN_CODE(INSN) XINT(INSN, 4) |
6f29feb1 JW |
366 | |
367 | /* Set up in flow.c; empty before then. | |
368 | Holds a chain of INSN_LIST rtx's whose first operands point at | |
369 | previous insns with direct data-flow connections to this one. | |
370 | That means that those insns set variables whose next use is in this insn. | |
371 | They are always in the same basic block as this insn. */ | |
8f985ec4 | 372 | #define LOG_LINKS(INSN) XEXP(INSN, 5) |
6f29feb1 JW |
373 | |
374 | /* 1 if insn has been deleted. */ | |
375 | #define INSN_DELETED_P(INSN) ((INSN)->volatil) | |
376 | ||
377 | /* 1 if insn is a call to a const function. */ | |
378 | #define CONST_CALL_P(INSN) ((INSN)->unchanging) | |
379 | ||
380 | /* 1 if insn is a branch that should not unconditionally execute its | |
381 | delay slots, i.e., it is an annulled branch. */ | |
382 | #define INSN_ANNULLED_BRANCH_P(INSN) ((INSN)->unchanging) | |
383 | ||
384 | /* 1 if insn is in a delay slot and is from the target of the branch. If | |
6dc42e49 | 385 | the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be |
6f29feb1 JW |
386 | executed if the branch is taken. For annulled branches with this bit |
387 | clear, the insn should be executed only if the branch is not taken. */ | |
388 | #define INSN_FROM_TARGET_P(INSN) ((INSN)->in_struct) | |
389 | ||
390 | /* Holds a list of notes on what this insn does to various REGs. | |
391 | It is a chain of EXPR_LIST rtx's, where the second operand | |
392 | is the chain pointer and the first operand is the REG being described. | |
393 | The mode field of the EXPR_LIST contains not a real machine mode | |
394 | but a value that says what this note says about the REG: | |
395 | REG_DEAD means that the value in REG dies in this insn (i.e., it is | |
396 | not needed past this insn). If REG is set in this insn, the REG_DEAD | |
397 | note may, but need not, be omitted. | |
398 | REG_INC means that the REG is autoincremented or autodecremented. | |
f75487ff ILT |
399 | REG_EQUIV describes the insn as a whole; it says that the insn |
400 | sets a register to a constant value or to be equivalent to a memory | |
401 | address. If the register is spilled to the stack then the constant | |
402 | value should be substituted for it. The contents of the REG_EQUIV | |
6f29feb1 | 403 | is the constant value or memory address, which may be different |
f75487ff ILT |
404 | from the source of the SET although it has the same value. A |
405 | REG_EQUIV note may also appear on an insn which copies a register | |
406 | parameter to a pseudo-register, if there is a memory address which | |
407 | could be used to hold that pseudo-register throughout the function. | |
6f29feb1 JW |
408 | REG_EQUAL is like REG_EQUIV except that the destination |
409 | is only momentarily equal to the specified rtx. Therefore, it | |
410 | cannot be used for substitution; but it can be used for cse. | |
411 | REG_RETVAL means that this insn copies the return-value of | |
412 | a library call out of the hard reg for return values. This note | |
413 | is actually an INSN_LIST and it points to the first insn involved | |
414 | in setting up arguments for the call. flow.c uses this to delete | |
415 | the entire library call when its result is dead. | |
416 | REG_LIBCALL is the inverse of REG_RETVAL: it goes on the first insn | |
417 | of the library call and points at the one that has the REG_RETVAL. | |
418 | REG_WAS_0 says that the register set in this insn held 0 before the insn. | |
419 | The contents of the note is the insn that stored the 0. | |
420 | If that insn is deleted or patched to a NOTE, the REG_WAS_0 is inoperative. | |
421 | The REG_WAS_0 note is actually an INSN_LIST, not an EXPR_LIST. | |
422 | REG_NONNEG means that the register is always nonnegative during | |
423 | the containing loop. This is used in branches so that decrement and | |
424 | branch instructions terminating on zero can be matched. There must be | |
425 | an insn pattern in the md file named `decrement_and_branch_until_zero' | |
426 | or else this will never be added to any instructions. | |
427 | REG_NO_CONFLICT means there is no conflict *after this insn* | |
428 | between the register in the note and the destination of this insn. | |
429 | REG_UNUSED identifies a register set in this insn and never used. | |
430 | REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use | |
431 | CC0, respectively. Normally, these are required to be consecutive insns, | |
432 | but we permit putting a cc0-setting insn in the delay slot of a branch | |
433 | as long as only one copy of the insn exists. In that case, these notes | |
434 | point from one to the other to allow code generation to determine what | |
435 | any require information and to properly update CC_STATUS. | |
436 | REG_LABEL points to a CODE_LABEL. Used by non-JUMP_INSNs to | |
437 | say that the CODE_LABEL contained in the REG_LABEL note is used | |
438 | by the insn. | |
d45cf215 | 439 | REG_DEP_ANTI is used in LOG_LINKS which represent anti (write after read) |
6f29feb1 JW |
440 | dependencies. REG_DEP_OUTPUT is used in LOG_LINKS which represent output |
441 | (write after write) dependencies. Data dependencies, which are the only | |
442 | type of LOG_LINK created by flow, are represented by a 0 reg note kind. */ | |
7ae21caf DE |
443 | /* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs when the flag |
444 | -fbranch-probabilities is given. It has an integer value. For jumps, | |
445 | it is the probability that this is a taken branch. For calls, it is the | |
446 | probability that this call won't return. | |
447 | REG_EXEC_COUNT is attached to the first insn of each basic block, and | |
448 | the first insn after each CALL_INSN. It indicates how many times this | |
c107334d DM |
449 | block was executed. |
450 | REG_SAVE_AREA is used to optimize rtl generated by dynamic stack | |
451 | allocations for targets where SETJMP_VIA_SAVE_AREA is true. | |
452 | REG_BR_PRED is attached to JUMP_INSNs only, it holds the branch prediction | |
07ebc930 RH |
453 | flags computed by get_jump_flags() after dbr scheduling is complete. |
454 | REG_FRAME_RELATED_EXPR is attached to insns that are RTX_FRAME_RELATED_P, | |
455 | but are too complex for DWARF to interpret what they imply. The attached | |
c46a37c4 RH |
456 | rtx is used instead of intuition. |
457 | REG_EH_REGION is used to indicate what exception region an INSN | |
6af57aae | 458 | belongs in. This can be used to indicate what region a call may throw |
1ef1bf06 AM |
459 | to. a REGION of 0 indicates that a call cannot throw at all. |
460 | a REGION of -1 indicates that it cannot throw, nor will it execute | |
6af57aae | 461 | a non-local goto. |
1ef1bf06 AM |
462 | REG_EH_RETHROW is used to indicate that a call is actually a |
463 | call to rethrow, and specifies the rethrow symbol for the region | |
464 | the rethrow is targetting. This provides a way to generate the | |
c46a37c4 RH |
465 | non standard flow edges required for a rethrow. |
466 | REG_SAVE_NOTE is used by haifa-sched to save NOTE_INSN notes | |
467 | across scheduling. */ | |
6f29feb1 | 468 | |
8f985ec4 | 469 | #define REG_NOTES(INSN) XEXP(INSN, 6) |
6f29feb1 | 470 | |
ef178af3 | 471 | #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) |
33f7f353 | 472 | |
6f29feb1 JW |
473 | /* Don't forget to change reg_note_name in rtl.c. */ |
474 | enum reg_note { REG_DEAD = 1, REG_INC = 2, REG_EQUIV = 3, REG_WAS_0 = 4, | |
475 | REG_EQUAL = 5, REG_RETVAL = 6, REG_LIBCALL = 7, | |
476 | REG_NONNEG = 8, REG_NO_CONFLICT = 9, REG_UNUSED = 10, | |
477 | REG_CC_SETTER = 11, REG_CC_USER = 12, REG_LABEL = 13, | |
7ae21caf | 478 | REG_DEP_ANTI = 14, REG_DEP_OUTPUT = 15, REG_BR_PROB = 16, |
c107334d | 479 | REG_EXEC_COUNT = 17, REG_NOALIAS = 18, REG_SAVE_AREA = 19, |
07ebc930 | 480 | REG_BR_PRED = 20, REG_EH_CONTEXT = 21, |
e6cfb550 | 481 | REG_FRAME_RELATED_EXPR = 22, REG_EH_REGION = 23, |
c46a37c4 | 482 | REG_EH_RETHROW = 24, REG_SAVE_NOTE = 25 }; |
7ae21caf DE |
483 | /* The base value for branch probability notes. */ |
484 | #define REG_BR_PROB_BASE 10000 | |
6f29feb1 JW |
485 | |
486 | /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ | |
487 | #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) | |
488 | #define PUT_REG_NOTE_KIND(LINK,KIND) PUT_MODE(LINK, (enum machine_mode) (KIND)) | |
489 | ||
490 | /* Names for REG_NOTE's in EXPR_LIST insn's. */ | |
491 | ||
1f9a015e | 492 | extern const char * const reg_note_name[]; |
0f41302f | 493 | #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) |
6f29feb1 | 494 | |
e51c6661 RK |
495 | /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of |
496 | USE and CLOBBER expressions. | |
497 | USE expressions list the registers filled with arguments that | |
498 | are passed to the function. | |
499 | CLOBBER expressions document the registers explicitly clobbered | |
500 | by this CALL_INSN. | |
501 | Pseudo registers can not be mentioned in this list. */ | |
8f985ec4 | 502 | #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7) |
e51c6661 | 503 | |
6f29feb1 JW |
504 | /* The label-number of a code-label. The assembler label |
505 | is made from `L' and the label-number printed in decimal. | |
506 | Label numbers are unique in a compilation. */ | |
8f985ec4 | 507 | #define CODE_LABEL_NUMBER(INSN) XINT(INSN, 3) |
6f29feb1 JW |
508 | |
509 | #define LINE_NUMBER NOTE | |
510 | ||
0dfa1860 MM |
511 | /* In a NOTE that is a line number, this is a string for the file name that the |
512 | line is in. We use the same field to record block numbers temporarily in | |
513 | NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts | |
514 | between ints and pointers if we use a different macro for the block number.) | |
515 | The NOTE_INSN_RANGE_{START,END} and NOTE_INSN_LIVE notes record their | |
516 | information as a rtx in the field. */ | |
6f29feb1 | 517 | |
83ab3839 | 518 | #define NOTE_SOURCE_FILE(INSN) XCSTR(INSN, 3, NOTE) |
1a4450c7 | 519 | #define NOTE_BLOCK(INSN) XCTREE(INSN, 3, NOTE) |
83ab3839 RH |
520 | #define NOTE_EH_HANDLER(INSN) XCINT(INSN, 3, NOTE) |
521 | #define NOTE_RANGE_INFO(INSN) XCEXP(INSN, 3, NOTE) | |
522 | #define NOTE_LIVE_INFO(INSN) XCEXP(INSN, 3, NOTE) | |
523 | #define NOTE_BASIC_BLOCK(INSN) XCBBDEF(INSN, 3, NOTE) | |
0dfa1860 | 524 | |
6f29feb1 JW |
525 | /* In a NOTE that is a line number, this is the line number. |
526 | Other kinds of NOTEs are identified by negative numbers here. */ | |
83ab3839 | 527 | #define NOTE_LINE_NUMBER(INSN) XCINT(INSN, 4, NOTE) |
6f29feb1 JW |
528 | |
529 | /* Codes that appear in the NOTE_LINE_NUMBER field | |
a31efb86 | 530 | for kinds of notes that are not line numbers. |
6f29feb1 | 531 | |
a31efb86 DE |
532 | Notice that we do not try to use zero here for any of |
533 | the special note codes because sometimes the source line | |
534 | actually can be zero! This happens (for example) when we | |
535 | are generating code for the per-translation-unit constructor | |
536 | and destructor routines for some C++ translation unit. | |
537 | ||
538 | If you should change any of the following values, or if you | |
539 | should add a new value here, don't forget to change the | |
540 | note_insn_name array in rtl.c. */ | |
6f29feb1 JW |
541 | |
542 | /* This note is used to get rid of an insn | |
543 | when it isn't safe to patch the insn out of the chain. */ | |
544 | #define NOTE_INSN_DELETED -1 | |
545 | #define NOTE_INSN_BLOCK_BEG -2 | |
546 | #define NOTE_INSN_BLOCK_END -3 | |
547 | #define NOTE_INSN_LOOP_BEG -4 | |
548 | #define NOTE_INSN_LOOP_END -5 | |
549 | /* This kind of note is generated at the end of the function body, | |
550 | just before the return insn or return label. | |
551 | In an optimizing compilation it is deleted by the first jump optimization, | |
552 | after enabling that optimizer to determine whether control can fall | |
553 | off the end of the function body without a return statement. */ | |
554 | #define NOTE_INSN_FUNCTION_END -6 | |
555 | /* This kind of note is generated just after each call to `setjmp', et al. */ | |
556 | #define NOTE_INSN_SETJMP -7 | |
557 | /* Generated at the place in a loop that `continue' jumps to. */ | |
558 | #define NOTE_INSN_LOOP_CONT -8 | |
559 | /* Generated at the start of a duplicated exit test. */ | |
560 | #define NOTE_INSN_LOOP_VTOP -9 | |
bdac5f58 TW |
561 | /* This marks the point immediately after the last prologue insn. */ |
562 | #define NOTE_INSN_PROLOGUE_END -10 | |
563 | /* This marks the point immediately prior to the first epilogue insn. */ | |
564 | #define NOTE_INSN_EPILOGUE_BEG -11 | |
196cedd0 RS |
565 | /* Generated in place of user-declared labels when they are deleted. */ |
566 | #define NOTE_INSN_DELETED_LABEL -12 | |
a31efb86 DE |
567 | /* This note indicates the start of the real body of the function, |
568 | i.e. the point just after all of the parms have been moved into | |
569 | their homes, etc. */ | |
570 | #define NOTE_INSN_FUNCTION_BEG -13 | |
3d195391 MS |
571 | /* These note where exception handling regions begin and end. */ |
572 | #define NOTE_INSN_EH_REGION_BEG -14 | |
573 | #define NOTE_INSN_EH_REGION_END -15 | |
7ae21caf DE |
574 | /* Generated whenever a duplicate line number note is output. For example, |
575 | one is output after the end of an inline function, in order to prevent | |
576 | the line containing the inline call from being counted twice in gcov. */ | |
577 | #define NOTE_REPEATED_LINE_NUMBER -16 | |
6f29feb1 | 578 | |
0dfa1860 MM |
579 | /* Start/end of a live range region, where pseudos allocated on the stack can |
580 | be allocated to temporary registers. */ | |
581 | #define NOTE_INSN_RANGE_START -17 | |
582 | #define NOTE_INSN_RANGE_END -18 | |
583 | /* Record which registers are currently live. */ | |
584 | #define NOTE_INSN_LIVE -19 | |
e881bb1b RH |
585 | /* Record the struct for the following basic block. */ |
586 | #define NOTE_INSN_BASIC_BLOCK -20 | |
10f07067 | 587 | |
6f29feb1 JW |
588 | /* Names for NOTE insn's other than line numbers. */ |
589 | ||
1f9a015e | 590 | extern const char * const note_insn_name[]; |
6f29feb1 JW |
591 | #define GET_NOTE_INSN_NAME(NOTE_CODE) (note_insn_name[-(NOTE_CODE)]) |
592 | ||
593 | /* The name of a label, in case it corresponds to an explicit label | |
594 | in the input source code. */ | |
83ab3839 | 595 | #define LABEL_NAME(RTX) XCSTR(RTX, 4, CODE_LABEL) |
6f29feb1 JW |
596 | |
597 | /* In jump.c, each label contains a count of the number | |
598 | of LABEL_REFs that point at it, so unused labels can be deleted. */ | |
83ab3839 | 599 | #define LABEL_NUSES(RTX) XCINT(RTX, 5, CODE_LABEL) |
6f29feb1 | 600 | |
8cd0faaf CM |
601 | /* Associate a name with a CODE_LABEL. */ |
602 | #define LABEL_ALTERNATE_NAME(RTX) XCSTR(RTX, 7, CODE_LABEL) | |
603 | ||
e9a25f70 | 604 | /* The original regno this ADDRESSOF was built for. */ |
83ab3839 | 605 | #define ADDRESSOF_REGNO(RTX) XCINT(RTX, 1, ADDRESSOF) |
e9a25f70 JL |
606 | |
607 | /* The variable in the register we took the address of. */ | |
83ab3839 | 608 | #define ADDRESSOF_DECL(RTX) XCTREE(RTX, 2, ADDRESSOF) |
e9a25f70 | 609 | |
6f29feb1 JW |
610 | /* In jump.c, each JUMP_INSN can point to a label that it can jump to, |
611 | so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can | |
612 | be decremented and possibly the label can be deleted. */ | |
83ab3839 | 613 | #define JUMP_LABEL(INSN) XCEXP(INSN, 7, JUMP_INSN) |
6f29feb1 JW |
614 | |
615 | /* Once basic blocks are found in flow.c, | |
616 | each CODE_LABEL starts a chain that goes through | |
617 | all the LABEL_REFs that jump to that label. | |
618 | The chain eventually winds up at the CODE_LABEL; it is circular. */ | |
83ab3839 | 619 | #define LABEL_REFS(LABEL) XCEXP(LABEL, 6, CODE_LABEL) |
6f29feb1 JW |
620 | \f |
621 | /* This is the field in the LABEL_REF through which the circular chain | |
622 | of references to a particular label is linked. | |
623 | This chain is set up in flow.c. */ | |
624 | ||
83ab3839 | 625 | #define LABEL_NEXTREF(REF) XCEXP(REF, 1, LABEL_REF) |
6f29feb1 JW |
626 | |
627 | /* Once basic blocks are found in flow.c, | |
628 | Each LABEL_REF points to its containing instruction with this field. */ | |
629 | ||
83ab3839 | 630 | #define CONTAINING_INSN(RTX) XCEXP(RTX, 2, LABEL_REF) |
6f29feb1 JW |
631 | |
632 | /* For a REG rtx, REGNO extracts the register number. */ | |
633 | ||
83ab3839 | 634 | #define REGNO(RTX) XCINT(RTX, 0, REG) |
6f29feb1 JW |
635 | |
636 | /* For a REG rtx, REG_FUNCTION_VALUE_P is nonzero if the reg | |
637 | is the current function's return value. */ | |
638 | ||
639 | #define REG_FUNCTION_VALUE_P(RTX) ((RTX)->integrated) | |
640 | ||
641 | /* 1 in a REG rtx if it corresponds to a variable declared by the user. */ | |
642 | #define REG_USERVAR_P(RTX) ((RTX)->volatil) | |
643 | ||
644 | /* For a CONST_INT rtx, INTVAL extracts the integer. */ | |
645 | ||
83ab3839 | 646 | #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) |
6f29feb1 JW |
647 | |
648 | /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. | |
649 | SUBREG_WORD extracts the word-number. */ | |
650 | ||
83ab3839 RH |
651 | #define SUBREG_REG(RTX) XCEXP(RTX, 0, SUBREG) |
652 | #define SUBREG_WORD(RTX) XCINT(RTX, 1, SUBREG) | |
6f29feb1 | 653 | |
07be3989 RK |
654 | /* 1 if the REG contained in SUBREG_REG is already known to be |
655 | sign- or zero-extended from the mode of the SUBREG to the mode of | |
656 | the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the | |
657 | extension. | |
658 | ||
659 | When used as a LHS, is means that this extension must be done | |
660 | when assigning to SUBREG_REG. */ | |
661 | ||
662 | #define SUBREG_PROMOTED_VAR_P(RTX) ((RTX)->in_struct) | |
663 | #define SUBREG_PROMOTED_UNSIGNED_P(RTX) ((RTX)->unchanging) | |
664 | ||
6f29feb1 JW |
665 | /* Access various components of an ASM_OPERANDS rtx. */ |
666 | ||
83ab3839 RH |
667 | #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR ((RTX), 0, ASM_OPERANDS) |
668 | #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR ((RTX), 1, ASM_OPERANDS) | |
669 | #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT ((RTX), 2, ASM_OPERANDS) | |
670 | #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC ((RTX), 3, ASM_OPERANDS) | |
671 | #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC ((RTX), 4, ASM_OPERANDS) | |
672 | #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP ((RTX), 3, (N), ASM_OPERANDS) | |
673 | #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN ((RTX), 3, ASM_OPERANDS) | |
674 | #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) XSTR (XCVECEXP ((RTX), 4, (N), ASM_OPERANDS), 0) | |
675 | #define ASM_OPERANDS_INPUT_MODE(RTX, N) GET_MODE (XCVECEXP ((RTX), 4, (N), ASM_OPERANDS)) | |
676 | #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR ((RTX), 5, ASM_OPERANDS) | |
677 | #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT ((RTX), 6, ASM_OPERANDS) | |
6f29feb1 JW |
678 | |
679 | /* For a MEM rtx, 1 if it's a volatile reference. | |
680 | Also in an ASM_OPERANDS rtx. */ | |
681 | #define MEM_VOLATILE_P(RTX) ((RTX)->volatil) | |
682 | ||
c6df88cb MM |
683 | /* For a MEM rtx, 1 if it refers to a field of an aggregate. If zero, |
684 | RTX may or may not refer to a field of an aggregate. */ | |
6f29feb1 JW |
685 | #define MEM_IN_STRUCT_P(RTX) ((RTX)->in_struct) |
686 | ||
c6df88cb MM |
687 | /* For a MEM rtx, 1 if it refers to a scalar. If zero, RTX may or may |
688 | not refer to a scalar.*/ | |
689 | #define MEM_SCALAR_P(RTX) ((RTX)->frame_related) | |
690 | ||
691 | /* Copy the MEM_VOLATILE_P, MEM_IN_STRUCT_P, and MEM_SCALAR_P | |
692 | attributes from RHS to LHS. */ | |
693 | #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ | |
694 | (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ | |
695 | MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ | |
63681b5f | 696 | MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS)) |
c6df88cb MM |
697 | |
698 | /* If VAL is non-zero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in | |
699 | RTX. Otherwise, vice versa. Use this macro only when you are | |
700 | *sure* that you know that the MEM is in a structure, or is a | |
701 | scalar. VAL is evaluated only once. */ | |
702 | #define MEM_SET_IN_STRUCT_P(RTX, VAL) \ | |
703 | ((VAL) ? (MEM_IN_STRUCT_P (RTX) = 1, MEM_SCALAR_P (RTX) = 0) \ | |
704 | : (MEM_IN_STRUCT_P (RTX) = 0, MEM_SCALAR_P (RTX) = 1)) | |
705 | ||
41472af8 MM |
706 | /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias |
707 | set, and may alias anything. Otherwise, the MEM can only alias | |
708 | MEMs in the same alias set. This value is set in a | |
709 | language-dependent manner in the front-end, and should not be | |
710 | altered in the back-end. These set numbers are tested for zero, | |
711 | and compared for equality; they have no other significance. In | |
712 | some front-ends, these numbers may correspond in some way to types, | |
713 | or other language-level entities, but they need not, and the | |
714 | back-end makes no such assumptions. */ | |
83ab3839 | 715 | #define MEM_ALIAS_SET(RTX) XCINT(RTX, 1, MEM) |
41472af8 | 716 | |
6f29feb1 JW |
717 | /* For a LABEL_REF, 1 means that this reference is to a label outside the |
718 | loop containing the reference. */ | |
719 | #define LABEL_OUTSIDE_LOOP_P(RTX) ((RTX)->in_struct) | |
720 | ||
adfaf10a | 721 | /* For a LABEL_REF, 1 means it is for a nonlocal label. */ |
2a406d2a | 722 | /* Likewise in an EXPR_LIST for a REG_LABEL note. */ |
adfaf10a RS |
723 | #define LABEL_REF_NONLOCAL_P(RTX) ((RTX)->volatil) |
724 | ||
6f29feb1 JW |
725 | /* For a CODE_LABEL, 1 means always consider this label to be needed. */ |
726 | #define LABEL_PRESERVE_P(RTX) ((RTX)->in_struct) | |
727 | ||
728 | /* For a REG, 1 means the register is used only in an exit test of a loop. */ | |
729 | #define REG_LOOP_TEST_P(RTX) ((RTX)->in_struct) | |
730 | ||
731 | /* During sched, for an insn, 1 means that the insn must be scheduled together | |
d45cf215 | 732 | with the preceding insn. */ |
6f29feb1 JW |
733 | #define SCHED_GROUP_P(INSN) ((INSN)->in_struct) |
734 | ||
c376c05b TW |
735 | /* During sched, for the LOG_LINKS of an insn, these cache the adjusted |
736 | cost of the dependence link. The cost of executing an instruction | |
737 | may vary based on how the results are used. LINK_COST_ZERO is 1 when | |
738 | the cost through the link varies and is unchanged (i.e., the link has | |
739 | zero additional cost). LINK_COST_FREE is 1 when the cost through the | |
740 | link is zero (i.e., the link makes the cost free). In other cases, | |
741 | the adjustment to the cost is recomputed each time it is needed. */ | |
742 | #define LINK_COST_ZERO(X) ((X)->jump) | |
743 | #define LINK_COST_FREE(X) ((X)->call) | |
744 | ||
6f29feb1 JW |
745 | /* For a SET rtx, SET_DEST is the place that is set |
746 | and SET_SRC is the value it is set to. */ | |
83ab3839 RH |
747 | #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) |
748 | #define SET_SRC(RTX) XCEXP(RTX, 1, SET) | |
6f29feb1 JW |
749 | |
750 | /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ | |
83ab3839 RH |
751 | #define TRAP_CONDITION(RTX) XCEXP(RTX, 0, TRAP_IF) |
752 | #define TRAP_CODE(RTX) XCEXP(RTX, 1, TRAP_IF) | |
6f29feb1 JW |
753 | |
754 | /* 1 in a SYMBOL_REF if it addresses this function's constants pool. */ | |
755 | #define CONSTANT_POOL_ADDRESS_P(RTX) ((RTX)->unchanging) | |
756 | ||
757 | /* Flag in a SYMBOL_REF for machine-specific purposes. */ | |
758 | #define SYMBOL_REF_FLAG(RTX) ((RTX)->volatil) | |
759 | ||
e6cfb550 AM |
760 | /* 1 in a SYMBOL_REF if it represents a symbol which might have to change |
761 | if its inlined or unrolled. */ | |
762 | #define SYMBOL_REF_NEED_ADJUST(RTX) ((RTX)->in_struct) | |
763 | ||
6f29feb1 JW |
764 | /* 1 means a SYMBOL_REF has been the library function in emit_library_call. */ |
765 | #define SYMBOL_REF_USED(RTX) ((RTX)->used) | |
766 | ||
6f29feb1 JW |
767 | /* Define a macro to look for REG_INC notes, |
768 | but save time on machines where they never exist. */ | |
769 | ||
58e54c44 RS |
770 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
771 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
6f29feb1 JW |
772 | #define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg))) |
773 | #else | |
774 | #define FIND_REG_INC_NOTE(insn, reg) 0 | |
775 | #endif | |
776 | ||
777 | /* Indicate whether the machine has any sort of auto increment addressing. | |
778 | If not, we can avoid checking for REG_INC notes. */ | |
779 | ||
58e54c44 RS |
780 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
781 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
6f29feb1 JW |
782 | #define AUTO_INC_DEC |
783 | #endif | |
0dfa1860 | 784 | |
940da324 JL |
785 | #ifndef HAVE_PRE_INCREMENT |
786 | #define HAVE_PRE_INCREMENT 0 | |
787 | #endif | |
788 | ||
789 | #ifndef HAVE_PRE_DECREMENT | |
790 | #define HAVE_PRE_DECREMENT 0 | |
791 | #endif | |
792 | ||
793 | #ifndef HAVE_POST_INCREMENT | |
794 | #define HAVE_POST_INCREMENT 0 | |
795 | #endif | |
796 | ||
797 | #ifndef HAVE_POST_DECREMENT | |
798 | #define HAVE_POST_DECREMENT 0 | |
799 | #endif | |
800 | ||
6e01bd94 MH |
801 | |
802 | /* Some architectures do not have complete pre/post increment/decrement | |
803 | instruction sets, or only move some modes efficiently. These macros | |
804 | allow us to tune autoincrement generation. */ | |
805 | ||
806 | #ifndef USE_LOAD_POST_INCREMENT | |
807 | #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
808 | #endif | |
809 | ||
810 | #ifndef USE_LOAD_POST_DECREMENT | |
811 | #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
812 | #endif | |
813 | ||
814 | #ifndef USE_LOAD_PRE_INCREMENT | |
815 | #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
816 | #endif | |
817 | ||
818 | #ifndef USE_LOAD_PRE_DECREMENT | |
819 | #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
820 | #endif | |
821 | ||
822 | #ifndef USE_STORE_POST_INCREMENT | |
823 | #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
824 | #endif | |
825 | ||
826 | #ifndef USE_STORE_POST_DECREMENT | |
827 | #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
828 | #endif | |
829 | ||
830 | #ifndef USE_STORE_PRE_INCREMENT | |
831 | #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
832 | #endif | |
833 | ||
834 | #ifndef USE_STORE_PRE_DECREMENT | |
835 | #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
836 | #endif | |
837 | ||
838 | ||
0dfa1860 MM |
839 | /* Accessors for RANGE_INFO. */ |
840 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 841 | #define RANGE_INFO_NOTE_START(INSN) XCEXP (INSN, 0, RANGE_INFO) |
0dfa1860 MM |
842 | |
843 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 844 | #define RANGE_INFO_NOTE_END(INSN) XCEXP (INSN, 1, RANGE_INFO) |
0dfa1860 MM |
845 | |
846 | /* For RANGE_{START,END} notes, return the vector containing the registers used | |
847 | in the range. */ | |
83ab3839 RH |
848 | #define RANGE_INFO_REGS(INSN) XCVEC (INSN, 2, RANGE_INFO) |
849 | #define RANGE_INFO_REGS_REG(INSN, N) XCVECEXP (INSN, 2, N, RANGE_INFO) | |
850 | #define RANGE_INFO_NUM_REGS(INSN) XCVECLEN (INSN, 2, RANGE_INFO) | |
0dfa1860 MM |
851 | |
852 | /* For RANGE_{START,END} notes, the number of calls within the range. */ | |
83ab3839 | 853 | #define RANGE_INFO_NCALLS(INSN) XCINT (INSN, 3, RANGE_INFO) |
0dfa1860 MM |
854 | |
855 | /* For RANGE_{START,END} notes, the number of insns within the range. */ | |
83ab3839 | 856 | #define RANGE_INFO_NINSNS(INSN) XCINT (INSN, 4, RANGE_INFO) |
0dfa1860 MM |
857 | |
858 | /* For RANGE_{START,END} notes, a unique # to identify this range. */ | |
83ab3839 | 859 | #define RANGE_INFO_UNIQUE(INSN) XCINT (INSN, 5, RANGE_INFO) |
0dfa1860 MM |
860 | |
861 | /* For RANGE_{START,END} notes, the basic block # the range starts with. */ | |
83ab3839 | 862 | #define RANGE_INFO_BB_START(INSN) XCINT (INSN, 6, RANGE_INFO) |
0dfa1860 MM |
863 | |
864 | /* For RANGE_{START,END} notes, the basic block # the range ends with. */ | |
83ab3839 | 865 | #define RANGE_INFO_BB_END(INSN) XCINT (INSN, 7, RANGE_INFO) |
0dfa1860 MM |
866 | |
867 | /* For RANGE_{START,END} notes, the loop depth the range is in. */ | |
83ab3839 | 868 | #define RANGE_INFO_LOOP_DEPTH(INSN) XCINT (INSN, 8, RANGE_INFO) |
0dfa1860 MM |
869 | |
870 | /* For RANGE_{START,END} notes, the bitmap of live registers at the start | |
871 | of the range. */ | |
83ab3839 | 872 | #define RANGE_INFO_LIVE_START(INSN) XCBITMAP (INSN, 9, RANGE_INFO) |
0dfa1860 MM |
873 | |
874 | /* For RANGE_{START,END} notes, the bitmap of live registers at the end | |
875 | of the range. */ | |
83ab3839 | 876 | #define RANGE_INFO_LIVE_END(INSN) XCBITMAP (INSN, 10, RANGE_INFO) |
0dfa1860 MM |
877 | |
878 | /* For RANGE_START notes, the marker # of the start of the range. */ | |
83ab3839 | 879 | #define RANGE_INFO_MARKER_START(INSN) XCINT (INSN, 11, RANGE_INFO) |
0dfa1860 MM |
880 | |
881 | /* For RANGE_START notes, the marker # of the end of the range. */ | |
83ab3839 | 882 | #define RANGE_INFO_MARKER_END(INSN) XCINT (INSN, 12, RANGE_INFO) |
0dfa1860 MM |
883 | |
884 | /* Original pseudo register # for a live range note. */ | |
83ab3839 | 885 | #define RANGE_REG_PSEUDO(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 0, REG) |
0dfa1860 MM |
886 | |
887 | /* Pseudo register # original register is copied into or -1. */ | |
83ab3839 | 888 | #define RANGE_REG_COPY(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 1, REG) |
0dfa1860 MM |
889 | |
890 | /* How many times a register in a live range note was referenced. */ | |
83ab3839 | 891 | #define RANGE_REG_REFS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 2) |
0dfa1860 MM |
892 | |
893 | /* How many times a register in a live range note was set. */ | |
83ab3839 | 894 | #define RANGE_REG_SETS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 3) |
0dfa1860 MM |
895 | |
896 | /* How many times a register in a live range note died. */ | |
83ab3839 | 897 | #define RANGE_REG_DEATHS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 4) |
0dfa1860 MM |
898 | |
899 | /* Whether the original value is needed to be copied into the range register at | |
900 | the start of the range. */ | |
83ab3839 | 901 | #define RANGE_REG_COPY_FLAGS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 5) |
0dfa1860 MM |
902 | |
903 | /* # of insns the register copy is live over. */ | |
83ab3839 | 904 | #define RANGE_REG_LIVE_LENGTH(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 6) |
0dfa1860 MM |
905 | |
906 | /* # of calls the register copy is live over. */ | |
83ab3839 | 907 | #define RANGE_REG_N_CALLS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 7) |
0dfa1860 MM |
908 | |
909 | /* DECL_NODE pointer of the declaration if the register is a user defined | |
910 | variable. */ | |
83ab3839 | 911 | #define RANGE_REG_SYMBOL_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 8) |
0dfa1860 MM |
912 | |
913 | /* BLOCK_NODE pointer to the block the variable is declared in if the | |
914 | register is a user defined variable. */ | |
83ab3839 | 915 | #define RANGE_REG_BLOCK_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 9) |
0dfa1860 MM |
916 | |
917 | /* EXPR_LIST of the distinct ranges a variable is in. */ | |
918 | #define RANGE_VAR_LIST(INSN) (XEXP (INSN, 0)) | |
919 | ||
920 | /* Block a variable is declared in. */ | |
921 | #define RANGE_VAR_BLOCK(INSN) (XTREE (INSN, 1)) | |
922 | ||
923 | /* # of distinct ranges a variable is in. */ | |
924 | #define RANGE_VAR_NUM(INSN) (XINT (INSN, 2)) | |
925 | ||
926 | /* For a NOTE_INSN_LIVE note, the registers which are currently live. */ | |
927 | #define RANGE_LIVE_BITMAP(INSN) (XBITMAP (INSN, 0)) | |
928 | ||
929 | /* For a NOTE_INSN_LIVE note, the original basic block number. */ | |
930 | #define RANGE_LIVE_ORIG_BLOCK(INSN) (XINT (INSN, 1)) | |
6f29feb1 | 931 | \f |
bf6bb899 BS |
932 | /* Nonzero if we need to distinguish between the return value of this function |
933 | and the return value of a function called by this function. This helps | |
934 | integrate.c. | |
935 | This is 1 until after the rtl generation pass. */ | |
936 | extern int rtx_equal_function_value_matters; | |
937 | ||
6f29feb1 JW |
938 | /* Generally useful functions. */ |
939 | ||
5f4f0e22 CH |
940 | /* The following functions accept a wide integer argument. Rather than |
941 | having to cast on every function call, we use a macro instead, that is | |
942 | defined here and in tree.h. */ | |
943 | ||
944 | #ifndef exact_log2 | |
ac957f13 JL |
945 | #define exact_log2(N) exact_log2_wide ((unsigned HOST_WIDE_INT) (N)) |
946 | #define floor_log2(N) floor_log2_wide ((unsigned HOST_WIDE_INT) (N)) | |
5f4f0e22 | 947 | #endif |
cdadb1dd KG |
948 | extern int exact_log2_wide PARAMS ((unsigned HOST_WIDE_INT)); |
949 | extern int floor_log2_wide PARAMS ((unsigned HOST_WIDE_INT)); | |
ac957f13 JL |
950 | |
951 | /* In expmed.c */ | |
cdadb1dd | 952 | extern int ceil_log2 PARAMS ((unsigned HOST_WIDE_INT)); |
5f4f0e22 CH |
953 | |
954 | #define plus_constant(X,C) plus_constant_wide (X, (HOST_WIDE_INT) (C)) | |
955 | ||
956 | #define plus_constant_for_output(X,C) \ | |
957 | plus_constant_for_output_wide (X, (HOST_WIDE_INT) (C)) | |
958 | ||
50b2596f | 959 | /* In explow.c */ |
c6991660 | 960 | extern void set_stack_check_libfunc PARAMS ((rtx)); |
cdadb1dd | 961 | extern HOST_WIDE_INT trunc_int_for_mode PARAMS ((HOST_WIDE_INT, |
7e4ce834 | 962 | enum machine_mode)); |
cdadb1dd KG |
963 | extern rtx plus_constant_wide PARAMS ((rtx, HOST_WIDE_INT)); |
964 | extern rtx plus_constant_for_output_wide PARAMS ((rtx, HOST_WIDE_INT)); | |
965 | extern void optimize_save_area_alloca PARAMS ((rtx)); | |
5f4f0e22 | 966 | |
cdadb1dd | 967 | extern rtx gen_rtx PARAMS ((enum rtx_code, |
bdea67fa | 968 | enum machine_mode, ...)); |
cdadb1dd KG |
969 | extern rtvec gen_rtvec PARAMS ((int, ...)); |
970 | ||
971 | extern char *oballoc PARAMS ((int)); | |
972 | extern char *permalloc PARAMS ((int)); | |
973 | extern rtx rtx_alloc PARAMS ((RTX_CODE)); | |
974 | extern rtvec rtvec_alloc PARAMS ((int)); | |
975 | extern rtx copy_insn_1 PARAMS ((rtx)); | |
976 | extern rtx copy_insn PARAMS ((rtx)); | |
977 | extern rtx copy_rtx PARAMS ((rtx)); | |
978 | extern rtx copy_rtx_if_shared PARAMS ((rtx)); | |
979 | extern rtx copy_most_rtx PARAMS ((rtx, rtx)); | |
980 | extern rtx shallow_copy_rtx PARAMS ((rtx)); | |
981 | extern int rtx_equal_p PARAMS ((rtx, rtx)); | |
982 | extern rtvec gen_rtvec_v PARAMS ((int, rtx *)); | |
983 | extern rtx gen_reg_rtx PARAMS ((enum machine_mode)); | |
984 | extern rtx gen_label_rtx PARAMS ((void)); | |
985 | extern rtx gen_lowpart_common PARAMS ((enum machine_mode, rtx)); | |
986 | extern rtx gen_lowpart PARAMS ((enum machine_mode, rtx)); | |
987 | extern rtx gen_lowpart_if_possible PARAMS ((enum machine_mode, rtx)); | |
988 | extern rtx gen_highpart PARAMS ((enum machine_mode, rtx)); | |
989 | extern rtx gen_realpart PARAMS ((enum machine_mode, rtx)); | |
990 | extern rtx gen_imagpart PARAMS ((enum machine_mode, rtx)); | |
991 | extern rtx operand_subword PARAMS ((rtx, int, int, enum machine_mode)); | |
992 | extern rtx operand_subword_force PARAMS ((rtx, int, enum machine_mode)); | |
993 | extern int subreg_lowpart_p PARAMS ((rtx)); | |
994 | extern rtx make_safe_from PARAMS ((rtx, rtx)); | |
995 | extern rtx convert_memory_address PARAMS ((enum machine_mode, rtx)); | |
996 | extern rtx memory_address PARAMS ((enum machine_mode, rtx)); | |
997 | extern rtx get_insns PARAMS ((void)); | |
998 | extern const char *get_insn_name PARAMS ((int)); | |
999 | extern rtx get_last_insn PARAMS ((void)); | |
1000 | extern rtx get_last_insn_anywhere PARAMS ((void)); | |
1001 | extern void start_sequence PARAMS ((void)); | |
1002 | extern void push_to_sequence PARAMS ((rtx)); | |
1003 | extern void end_sequence PARAMS ((void)); | |
1004 | extern rtx gen_sequence PARAMS ((void)); | |
1005 | extern rtx immed_double_const PARAMS ((HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode)); | |
1006 | extern rtx force_const_mem PARAMS ((enum machine_mode, rtx)); | |
1007 | extern rtx force_reg PARAMS ((enum machine_mode, rtx)); | |
1008 | extern rtx get_pool_constant PARAMS ((rtx)); | |
1009 | extern enum machine_mode get_pool_mode PARAMS ((rtx)); | |
1010 | extern rtx get_pool_constant_for_function PARAMS ((struct function *, rtx)); | |
1011 | extern enum machine_mode get_pool_mode_for_function PARAMS ((struct function *, rtx)); | |
1012 | extern int get_pool_offset PARAMS ((rtx)); | |
1013 | extern rtx simplify_subtraction PARAMS ((rtx)); | |
1014 | extern rtx assign_stack_local PARAMS ((enum machine_mode, | |
e5e809f4 | 1015 | HOST_WIDE_INT, int)); |
cdadb1dd | 1016 | extern rtx assign_stack_temp PARAMS ((enum machine_mode, |
e5e809f4 | 1017 | HOST_WIDE_INT, int)); |
cdadb1dd | 1018 | extern rtx assign_temp PARAMS ((union tree_node *, |
e5e809f4 | 1019 | int, int, int)); |
cdadb1dd KG |
1020 | extern rtx protect_from_queue PARAMS ((rtx, int)); |
1021 | extern void emit_queue PARAMS ((void)); | |
1022 | extern rtx emit_move_insn PARAMS ((rtx, rtx)); | |
1023 | extern rtx emit_insn_before PARAMS ((rtx, rtx)); | |
1024 | extern rtx emit_jump_insn_before PARAMS ((rtx, rtx)); | |
1025 | extern rtx emit_call_insn_before PARAMS ((rtx, rtx)); | |
1026 | extern rtx emit_barrier_before PARAMS ((rtx)); | |
1027 | extern rtx emit_label_before PARAMS ((rtx, rtx)); | |
1028 | extern rtx emit_note_before PARAMS ((int, rtx)); | |
1029 | extern rtx emit_insn_after PARAMS ((rtx, rtx)); | |
1030 | extern rtx emit_jump_insn_after PARAMS ((rtx, rtx)); | |
1031 | extern rtx emit_barrier_after PARAMS ((rtx)); | |
1032 | extern rtx emit_label_after PARAMS ((rtx, rtx)); | |
1033 | extern rtx emit_note_after PARAMS ((int, rtx)); | |
1034 | extern rtx emit_line_note_after PARAMS ((char *, int, rtx)); | |
1035 | extern rtx emit_insn PARAMS ((rtx)); | |
1036 | extern rtx emit_insns PARAMS ((rtx)); | |
1037 | extern rtx emit_insns_before PARAMS ((rtx, rtx)); | |
1038 | extern rtx emit_insns_after PARAMS ((rtx, rtx)); | |
1039 | extern rtx emit_jump_insn PARAMS ((rtx)); | |
1040 | extern rtx emit_call_insn PARAMS ((rtx)); | |
1041 | extern rtx emit_label PARAMS ((rtx)); | |
1042 | extern rtx emit_barrier PARAMS ((void)); | |
1043 | extern rtx emit_line_note PARAMS ((char *, int)); | |
1044 | extern rtx emit_note PARAMS ((char *, int)); | |
1045 | extern rtx emit_line_note_force PARAMS ((char *, int)); | |
1046 | extern rtx make_insn_raw PARAMS ((rtx)); | |
1047 | extern rtx previous_insn PARAMS ((rtx)); | |
1048 | extern rtx next_insn PARAMS ((rtx)); | |
1049 | extern rtx prev_nonnote_insn PARAMS ((rtx)); | |
1050 | extern rtx next_nonnote_insn PARAMS ((rtx)); | |
1051 | extern rtx prev_real_insn PARAMS ((rtx)); | |
1052 | extern rtx next_real_insn PARAMS ((rtx)); | |
1053 | extern rtx prev_active_insn PARAMS ((rtx)); | |
1054 | extern rtx next_active_insn PARAMS ((rtx)); | |
69732dcb | 1055 | extern int active_insn_p PARAMS ((rtx)); |
cdadb1dd KG |
1056 | extern rtx prev_label PARAMS ((rtx)); |
1057 | extern rtx next_label PARAMS ((rtx)); | |
1058 | extern rtx next_cc0_user PARAMS ((rtx)); | |
1059 | extern rtx prev_cc0_setter PARAMS ((rtx)); | |
1060 | extern rtx next_nondeleted_insn PARAMS ((rtx)); | |
1061 | extern enum rtx_code reverse_condition PARAMS ((enum rtx_code)); | |
7913f3d0 | 1062 | extern enum rtx_code reverse_condition_maybe_unordered PARAMS ((enum rtx_code)); |
cdadb1dd KG |
1063 | extern enum rtx_code swap_condition PARAMS ((enum rtx_code)); |
1064 | extern enum rtx_code unsigned_condition PARAMS ((enum rtx_code)); | |
1065 | extern enum rtx_code signed_condition PARAMS ((enum rtx_code)); | |
1066 | extern rtx find_equiv_reg PARAMS ((rtx, rtx, enum reg_class, int, short *, int, enum machine_mode)); | |
1067 | extern rtx squeeze_notes PARAMS ((rtx, rtx)); | |
1068 | extern rtx delete_insn PARAMS ((rtx)); | |
1069 | extern void delete_jump PARAMS ((rtx)); | |
1070 | extern void delete_barrier PARAMS ((rtx)); | |
1071 | extern rtx get_label_before PARAMS ((rtx)); | |
1072 | extern rtx get_label_after PARAMS ((rtx)); | |
1073 | extern rtx follow_jumps PARAMS ((rtx)); | |
1074 | extern rtx adj_offsettable_operand PARAMS ((rtx, int)); | |
1075 | extern rtx try_split PARAMS ((rtx, rtx, int)); | |
1076 | extern rtx split_insns PARAMS ((rtx, rtx)); | |
1077 | extern rtx simplify_unary_operation PARAMS ((enum rtx_code, enum machine_mode, rtx, enum machine_mode)); | |
1078 | extern rtx simplify_binary_operation PARAMS ((enum rtx_code, enum machine_mode, rtx, rtx)); | |
1079 | extern rtx simplify_ternary_operation PARAMS ((enum rtx_code, enum machine_mode, enum machine_mode, rtx, rtx, rtx)); | |
1080 | extern rtx simplify_relational_operation PARAMS ((enum rtx_code, enum machine_mode, rtx, rtx)); | |
1081 | extern rtx simplify_gen_binary PARAMS ((enum rtx_code, enum machine_mode, | |
0cedb36c | 1082 | rtx, rtx)); |
cdadb1dd KG |
1083 | extern rtx simplify_rtx PARAMS ((rtx)); |
1084 | extern rtx gen_move_insn PARAMS ((rtx, rtx)); | |
1085 | extern rtx gen_jump PARAMS ((rtx)); | |
1086 | extern rtx gen_beq PARAMS ((rtx)); | |
1087 | extern rtx gen_bge PARAMS ((rtx)); | |
1088 | extern rtx gen_ble PARAMS ((rtx)); | |
1089 | extern rtx gen_mem_addressof PARAMS ((rtx, union tree_node *)); | |
1090 | extern rtx eliminate_constant_term PARAMS ((rtx, rtx *)); | |
1091 | extern rtx expand_complex_abs PARAMS ((enum machine_mode, rtx, rtx, int)); | |
1092 | extern enum machine_mode choose_hard_reg_mode PARAMS ((int, int)); | |
1093 | extern void set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx)); | |
9ae8ffe7 | 1094 | |
e9a25f70 JL |
1095 | /* Functions in rtlanal.c */ |
1096 | ||
cdadb1dd KG |
1097 | extern int rtx_unstable_p PARAMS ((rtx)); |
1098 | extern int rtx_varies_p PARAMS ((rtx)); | |
1099 | extern int rtx_addr_varies_p PARAMS ((rtx)); | |
1100 | extern HOST_WIDE_INT get_integer_term PARAMS ((rtx)); | |
1101 | extern rtx get_related_value PARAMS ((rtx)); | |
1102 | extern int reg_mentioned_p PARAMS ((rtx, rtx)); | |
1103 | extern int reg_referenced_p PARAMS ((rtx, rtx)); | |
1104 | extern int reg_used_between_p PARAMS ((rtx, rtx, rtx)); | |
1105 | extern int reg_referenced_between_p PARAMS ((rtx, rtx, rtx)); | |
1106 | extern int reg_set_between_p PARAMS ((rtx, rtx, rtx)); | |
1107 | extern int regs_set_between_p PARAMS ((rtx, rtx, rtx)); | |
1108 | extern int modified_between_p PARAMS ((rtx, rtx, rtx)); | |
1109 | extern int no_labels_between_p PARAMS ((rtx, rtx)); | |
1110 | extern int no_jumps_between_p PARAMS ((rtx, rtx)); | |
1111 | extern int modified_in_p PARAMS ((rtx, rtx)); | |
1112 | extern int reg_set_p PARAMS ((rtx, rtx)); | |
1113 | extern rtx single_set PARAMS ((rtx)); | |
1114 | extern int multiple_sets PARAMS ((rtx)); | |
1115 | extern rtx find_last_value PARAMS ((rtx, rtx *, rtx, int)); | |
1116 | extern int refers_to_regno_p PARAMS ((int, int, rtx, rtx *)); | |
1117 | extern int reg_overlap_mentioned_p PARAMS ((rtx, rtx)); | |
1118 | extern void note_stores PARAMS ((rtx, void (*)(rtx, rtx, void *), void *)); | |
1119 | extern rtx reg_set_last PARAMS ((rtx, rtx)); | |
1120 | extern int dead_or_set_p PARAMS ((rtx, rtx)); | |
1121 | extern int dead_or_set_regno_p PARAMS ((rtx, int)); | |
1122 | extern rtx find_reg_note PARAMS ((rtx, enum reg_note, rtx)); | |
1123 | extern rtx find_regno_note PARAMS ((rtx, enum reg_note, int)); | |
1124 | extern int find_reg_fusage PARAMS ((rtx, enum rtx_code, rtx)); | |
1125 | extern int find_regno_fusage PARAMS ((rtx, enum rtx_code, int)); | |
1126 | extern void remove_note PARAMS ((rtx, rtx)); | |
1127 | extern int side_effects_p PARAMS ((rtx)); | |
1128 | extern int volatile_refs_p PARAMS ((rtx)); | |
1129 | extern int volatile_insn_p PARAMS ((rtx)); | |
1130 | extern int may_trap_p PARAMS ((rtx)); | |
1131 | extern int inequality_comparisons_p PARAMS ((rtx)); | |
1132 | extern rtx replace_rtx PARAMS ((rtx, rtx, rtx)); | |
1133 | extern rtx replace_regs PARAMS ((rtx, rtx *, int, int)); | |
1134 | extern int computed_jump_p PARAMS ((rtx)); | |
1135 | typedef int (*rtx_function) PARAMS ((rtx *, void *)); | |
1136 | extern int for_each_rtx PARAMS ((rtx *, rtx_function, void *)); | |
1137 | extern rtx regno_use_in PARAMS ((int, rtx)); | |
1138 | extern int auto_inc_p PARAMS ((rtx)); | |
1139 | extern void remove_node_from_expr_list PARAMS ((rtx, rtx *)); | |
1140 | extern int insns_safe_to_move_p PARAMS ((rtx, rtx, rtx *)); | |
6f29feb1 | 1141 | |
ae0b51ef JL |
1142 | /* flow.c */ |
1143 | ||
cdadb1dd KG |
1144 | extern rtx find_use_as_address PARAMS ((rtx, rtx, HOST_WIDE_INT)); |
1145 | void init_EXPR_INSN_LIST_cache PARAMS ((void)); | |
1146 | void free_EXPR_LIST_list PARAMS ((rtx *)); | |
1147 | void free_INSN_LIST_list PARAMS ((rtx *)); | |
1148 | void free_EXPR_LIST_node PARAMS ((rtx)); | |
1149 | void free_INSN_LIST_node PARAMS ((rtx)); | |
1150 | rtx alloc_INSN_LIST PARAMS ((rtx, rtx)); | |
1151 | rtx alloc_EXPR_LIST PARAMS ((int, rtx, rtx)); | |
ae0b51ef JL |
1152 | |
1153 | /* regclass.c */ | |
1154 | ||
6f29feb1 JW |
1155 | /* Maximum number of parallel sets and clobbers in any insn in this fn. |
1156 | Always at least 3, since the combiner could put that many togetherm | |
1157 | and we want this to remain correct for all the remaining passes. */ | |
1158 | ||
1159 | extern int max_parallel; | |
1160 | ||
e0c6d139 | 1161 | /* Free up register info memory. */ |
cdadb1dd | 1162 | extern void free_reg_info PARAMS ((void)); |
e0c6d139 | 1163 | |
ae0b51ef | 1164 | /* recog.c */ |
cdadb1dd KG |
1165 | extern int asm_noperands PARAMS ((rtx)); |
1166 | extern char *decode_asm_operands PARAMS ((rtx, rtx *, rtx **, | |
9b3142b3 KG |
1167 | const char **, |
1168 | enum machine_mode *)); | |
6f29feb1 | 1169 | |
cdadb1dd KG |
1170 | extern enum reg_class reg_preferred_class PARAMS ((int)); |
1171 | extern enum reg_class reg_alternate_class PARAMS ((int)); | |
6f29feb1 | 1172 | |
cdadb1dd | 1173 | extern rtx get_first_nonparm_insn PARAMS ((void)); |
6f29feb1 | 1174 | |
cdadb1dd | 1175 | extern void split_all_insns PARAMS ((int)); |
6a73406e | 1176 | |
68d75312 | 1177 | #define MAX_SAVED_CONST_INT 64 |
5da077de | 1178 | extern rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; |
68d75312 | 1179 | |
5da077de AS |
1180 | #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) |
1181 | #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) | |
1182 | #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) | |
1183 | #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) | |
6f29feb1 | 1184 | extern rtx const_true_rtx; |
a8efe40d RK |
1185 | |
1186 | extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; | |
1187 | ||
1188 | /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the | |
1189 | same as VOIDmode. */ | |
1190 | ||
1191 | #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) | |
1192 | ||
1193 | /* Likewise, for the constants 1 and 2. */ | |
1194 | ||
1195 | #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) | |
1196 | #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) | |
6f29feb1 | 1197 | |
5da077de AS |
1198 | /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg |
1199 | is used to represent the frame pointer. This is because the | |
1200 | hard frame pointer and the automatic variables are separated by an amount | |
1201 | that cannot be determined until after register allocation. We can assume | |
1202 | that in this case ELIMINABLE_REGS will be defined, one action of which | |
1203 | will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ | |
1204 | #ifndef HARD_FRAME_POINTER_REGNUM | |
1205 | #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM | |
1206 | #endif | |
1207 | ||
1208 | /* Index labels for global_rtl. */ | |
1209 | enum global_rtl_index | |
68d75312 | 1210 | { |
5da077de AS |
1211 | GR_PC, |
1212 | GR_CC0, | |
1213 | GR_STACK_POINTER, | |
1214 | GR_FRAME_POINTER, | |
1215 | /* For register elimination to work properly these hard_frame_pointer_rtx, | |
1216 | frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to | |
1217 | the same register. */ | |
1218 | #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1219 | GR_ARG_POINTER = GR_FRAME_POINTER, | |
1220 | #endif | |
1221 | #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM | |
1222 | GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, | |
1223 | #else | |
1224 | GR_HARD_FRAME_POINTER, | |
1225 | #endif | |
1226 | #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM | |
1227 | #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1228 | GR_ARG_POINTER = GR_HARD_FRAME_POINTER, | |
1229 | #else | |
1230 | GR_ARG_POINTER, | |
1231 | #endif | |
1232 | #endif | |
1233 | GR_VIRTUAL_INCOMING_ARGS, | |
1234 | GR_VIRTUAL_STACK_ARGS, | |
1235 | GR_VIRTUAL_STACK_DYNAMIC, | |
1236 | GR_VIRTUAL_OUTGOING_ARGS, | |
1237 | GR_VIRTUAL_CFA, | |
1238 | ||
1239 | GR_MAX | |
1240 | }; | |
1241 | ||
1242 | /* Pointers to standard pieces of rtx are stored here. */ | |
1243 | extern rtx global_rtl[GR_MAX]; | |
1244 | ||
1245 | /* Standard pieces of rtx, to be substituted directly into things. */ | |
1246 | #define pc_rtx (global_rtl[GR_PC]) | |
1247 | #define cc0_rtx (global_rtl[GR_CC0]) | |
68d75312 | 1248 | |
6f29feb1 JW |
1249 | /* All references to certain hard regs, except those created |
1250 | by allocating pseudo regs into them (when that's possible), | |
1251 | go through these unique rtx objects. */ | |
5da077de AS |
1252 | #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) |
1253 | #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) | |
1254 | #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) | |
1255 | #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) | |
68d75312 | 1256 | |
6f29feb1 JW |
1257 | extern rtx pic_offset_table_rtx; |
1258 | extern rtx struct_value_rtx; | |
1259 | extern rtx struct_value_incoming_rtx; | |
1260 | extern rtx static_chain_rtx; | |
1261 | extern rtx static_chain_incoming_rtx; | |
07ebc930 | 1262 | extern rtx return_address_pointer_rtx; |
3b80f6ca RH |
1263 | |
1264 | /* Include the RTL generation functions. */ | |
1265 | ||
1266 | #ifndef NO_GENRTL_H | |
1267 | #include "genrtl.h" | |
1268 | #endif | |
1269 | ||
41472af8 MM |
1270 | /* There are some RTL codes that require special attention; the |
1271 | generation functions included above do the raw handling. If you | |
b4213325 MM |
1272 | add to this list, modify special_rtx in gengenrtl.c as well. You |
1273 | should also modify gen_rtx to use the special function. */ | |
3b80f6ca | 1274 | |
cdadb1dd | 1275 | extern rtx gen_rtx_CONST_DOUBLE PARAMS ((enum machine_mode, rtx, |
0133b7d9 | 1276 | HOST_WIDE_INT, HOST_WIDE_INT)); |
cdadb1dd KG |
1277 | extern rtx gen_rtx_CONST_INT PARAMS ((enum machine_mode, HOST_WIDE_INT)); |
1278 | extern rtx gen_rtx_REG PARAMS ((enum machine_mode, int)); | |
1279 | extern rtx gen_rtx_MEM PARAMS ((enum machine_mode, rtx)); | |
3b80f6ca | 1280 | |
aefdd5ab JL |
1281 | /* We need the cast here to ensure that we get the same result both with |
1282 | and without prototypes. */ | |
1283 | #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N)) | |
3b80f6ca | 1284 | |
6f29feb1 JW |
1285 | /* Virtual registers are used during RTL generation to refer to locations into |
1286 | the stack frame when the actual location isn't known until RTL generation | |
1287 | is complete. The routine instantiate_virtual_regs replaces these with | |
1288 | the proper value, which is normally {frame,arg,stack}_pointer_rtx plus | |
1289 | a constant. */ | |
1290 | ||
1291 | #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) | |
1292 | ||
1293 | /* This points to the first word of the incoming arguments passed on the stack, | |
1294 | either by the caller or by the callee when pretending it was passed by the | |
1295 | caller. */ | |
1296 | ||
5da077de | 1297 | #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) |
6f29feb1 JW |
1298 | |
1299 | #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) | |
1300 | ||
60343c3b | 1301 | /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first |
6f29feb1 JW |
1302 | variable on the stack. Otherwise, it points to the first variable on |
1303 | the stack. */ | |
1304 | ||
5da077de | 1305 | #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) |
6f29feb1 JW |
1306 | |
1307 | #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) | |
1308 | ||
1309 | /* This points to the location of dynamically-allocated memory on the stack | |
1310 | immediately after the stack pointer has been adjusted by the amount | |
1311 | desired. */ | |
1312 | ||
5da077de | 1313 | #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) |
6f29feb1 JW |
1314 | |
1315 | #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) | |
1316 | ||
1317 | /* This points to the location in the stack at which outgoing arguments should | |
1318 | be written when the stack is pre-pushed (arguments pushed using push | |
1319 | insns always use sp). */ | |
1320 | ||
5da077de | 1321 | #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) |
6f29feb1 JW |
1322 | |
1323 | #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) | |
1324 | ||
71038426 RH |
1325 | /* This points to the Canonical Frame Address of the function. This |
1326 | should corrospond to the CFA produced by INCOMING_FRAME_SP_OFFSET, | |
1327 | but is calculated relative to the arg pointer for simplicity; the | |
1328 | frame pointer nor stack pointer are necessarily fixed relative to | |
1329 | the CFA until after reload. */ | |
1330 | ||
5da077de | 1331 | #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) |
71038426 RH |
1332 | |
1333 | #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) | |
1334 | ||
1335 | #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) | |
6f29feb1 | 1336 | |
cdadb1dd KG |
1337 | extern rtx find_next_ref PARAMS ((rtx, rtx)); |
1338 | extern rtx *find_single_use PARAMS ((rtx, rtx, rtx *)); | |
f837a861 | 1339 | |
cdadb1dd KG |
1340 | extern rtx output_constant_def PARAMS ((union tree_node *)); |
1341 | extern rtx immed_real_const PARAMS ((union tree_node *)); | |
1342 | extern union tree_node *make_tree PARAMS ((union tree_node *, rtx)); | |
6f29feb1 JW |
1343 | |
1344 | /* Define a default value for STORE_FLAG_VALUE. */ | |
1345 | ||
1346 | #ifndef STORE_FLAG_VALUE | |
1347 | #define STORE_FLAG_VALUE 1 | |
1348 | #endif | |
1349 | ||
0ea0e871 JL |
1350 | /* Nonzero after the second flow pass has completed. |
1351 | Set to 1 or 0 by toplev.c */ | |
1352 | extern int flow2_completed; | |
1353 | ||
6f29feb1 | 1354 | /* Nonzero after end of reload pass. |
0ea0e871 | 1355 | Set to 1 or 0 by reload1.c. */ |
6f29feb1 JW |
1356 | |
1357 | extern int reload_completed; | |
1358 | ||
1359 | /* Set to 1 while reload_as_needed is operating. | |
1360 | Required by some machines to handle any generated moves differently. */ | |
1361 | ||
1362 | extern int reload_in_progress; | |
1363 | ||
1364 | /* If this is nonzero, we do not bother generating VOLATILE | |
1365 | around volatile memory references, and we are willing to | |
1366 | output indirect addresses. If cse is to follow, we reject | |
1367 | indirect addresses so a useful potential cse is generated; | |
1368 | if it is used only once, instruction combination will produce | |
1369 | the same indirect address eventually. */ | |
1370 | extern int cse_not_expected; | |
1371 | ||
f1db3576 JL |
1372 | /* Set to nonzero before life analysis to indicate that it is unsafe to |
1373 | generate any new pseudo registers. */ | |
1374 | extern int no_new_pseudos; | |
1375 | ||
f5118aa5 | 1376 | /* Translates rtx code to tree code, for those codes needed by |
88efc60a RK |
1377 | REAL_ARITHMETIC. The function returns an int because the caller may not |
1378 | know what `enum tree_code' means. */ | |
1379 | ||
cdadb1dd | 1380 | extern int rtx_to_tree_code PARAMS ((enum rtx_code)); |
9ae8ffe7 | 1381 | |
ac957f13 | 1382 | /* In tree.c */ |
cdadb1dd | 1383 | extern void obfree PARAMS ((char *)); |
ac957f13 | 1384 | struct obstack; |
cdadb1dd KG |
1385 | extern void gcc_obstack_init PARAMS ((struct obstack *)); |
1386 | extern void pop_obstacks PARAMS ((void)); | |
1387 | extern void push_obstacks PARAMS ((struct obstack *, | |
ac957f13 | 1388 | struct obstack *)); |
ac957f13 JL |
1389 | /* In cse.c */ |
1390 | struct cse_basic_block_data; | |
cdadb1dd KG |
1391 | extern int rtx_cost PARAMS ((rtx, enum rtx_code)); |
1392 | extern void delete_trivially_dead_insns PARAMS ((rtx, int)); | |
ac957f13 | 1393 | #ifdef BUFSIZ |
cdadb1dd | 1394 | extern int cse_main PARAMS ((rtx, int, int, FILE *)); |
ac957f13 | 1395 | #endif |
cdadb1dd | 1396 | extern void cse_end_of_basic_block PARAMS ((rtx, |
ac957f13 JL |
1397 | struct cse_basic_block_data *, |
1398 | int, int, int)); | |
1399 | ||
1400 | /* In jump.c */ | |
cdadb1dd KG |
1401 | extern int comparison_dominates_p PARAMS ((enum rtx_code, enum rtx_code)); |
1402 | extern int condjump_p PARAMS ((rtx)); | |
1403 | extern rtx condjump_label PARAMS ((rtx)); | |
1404 | extern int simplejump_p PARAMS ((rtx)); | |
1405 | extern int returnjump_p PARAMS ((rtx)); | |
1406 | extern int onlyjump_p PARAMS ((rtx)); | |
1407 | extern int sets_cc0_p PARAMS ((rtx)); | |
1408 | extern int invert_jump PARAMS ((rtx, rtx)); | |
1409 | extern int rtx_renumbered_equal_p PARAMS ((rtx, rtx)); | |
1410 | extern int true_regnum PARAMS ((rtx)); | |
1411 | extern int redirect_jump PARAMS ((rtx, rtx)); | |
1412 | extern void jump_optimize PARAMS ((rtx, int, int, int)); | |
1413 | extern void rebuild_jump_labels PARAMS ((rtx)); | |
1414 | extern void thread_jumps PARAMS ((rtx, int, int)); | |
1415 | extern int redirect_exp PARAMS ((rtx *, rtx, rtx, rtx)); | |
1416 | extern int rtx_equal_for_thread_p PARAMS ((rtx, rtx, rtx)); | |
1417 | extern int invert_exp PARAMS ((rtx, rtx)); | |
1418 | extern int can_reverse_comparison_p PARAMS ((rtx, rtx)); | |
1419 | extern void delete_for_peephole PARAMS ((rtx, rtx)); | |
1420 | extern int condjump_in_parallel_p PARAMS ((rtx)); | |
1421 | extern void never_reached_warning PARAMS ((rtx)); | |
ac957f13 | 1422 | |
14bf4a33 | 1423 | /* Flags for jump_optimize() */ |
a05924f9 JH |
1424 | #define JUMP_CROSS_JUMP 1 |
1425 | #define JUMP_CROSS_JUMP_DEATH_MATTERS 2 | |
1426 | #define JUMP_NOOP_MOVES 1 | |
1427 | #define JUMP_AFTER_REGSCAN 1 | |
14bf4a33 | 1428 | |
ac957f13 | 1429 | /* In emit-rtl.c. */ |
cdadb1dd KG |
1430 | extern int max_reg_num PARAMS ((void)); |
1431 | extern int max_label_num PARAMS ((void)); | |
1432 | extern int get_first_label_num PARAMS ((void)); | |
1433 | extern void delete_insns_since PARAMS ((rtx)); | |
1434 | extern void mark_reg_pointer PARAMS ((rtx, int)); | |
1435 | extern void mark_user_reg PARAMS ((rtx)); | |
1436 | extern void reset_used_flags PARAMS ((rtx)); | |
1437 | extern void reorder_insns PARAMS ((rtx, rtx, rtx)); | |
1438 | extern int get_max_uid PARAMS ((void)); | |
1439 | extern int in_sequence_p PARAMS ((void)); | |
1440 | extern void force_next_line_note PARAMS ((void)); | |
1441 | extern void clear_emit_caches PARAMS ((void)); | |
1442 | extern void init_emit PARAMS ((void)); | |
1443 | extern void init_emit_once PARAMS ((int)); | |
1444 | extern void push_topmost_sequence PARAMS ((void)); | |
1445 | extern void pop_topmost_sequence PARAMS ((void)); | |
1446 | extern int subreg_realpart_p PARAMS ((rtx)); | |
1447 | extern void reverse_comparison PARAMS ((rtx)); | |
1448 | extern void set_new_first_and_last_insn PARAMS ((rtx, rtx)); | |
1449 | extern void set_new_first_and_last_label_num PARAMS ((int, int)); | |
1450 | extern void set_new_last_label_num PARAMS ((int)); | |
d1b81779 | 1451 | extern void unshare_all_rtl_again PARAMS ((rtx)); |
cdadb1dd KG |
1452 | extern void set_last_insn PARAMS ((rtx)); |
1453 | extern void link_cc0_insns PARAMS ((rtx)); | |
1454 | extern void add_insn PARAMS ((rtx)); | |
1455 | extern void add_insn_before PARAMS ((rtx, rtx)); | |
1456 | extern void add_insn_after PARAMS ((rtx, rtx)); | |
1457 | extern void remove_insn PARAMS ((rtx)); | |
1458 | extern void reorder_insns_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1459 | extern void emit_insn_after_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1460 | extern enum rtx_code classify_insn PARAMS ((rtx)); | |
1461 | extern rtx emit PARAMS ((rtx)); | |
a11759a3 JR |
1462 | /* Query and clear/ restore no_line_numbers. This is used by the |
1463 | switch / case handling in stmt.c to give proper line numbers in | |
1464 | warnings about unreachable code. */ | |
cdadb1dd KG |
1465 | int force_line_numbers PARAMS ((void)); |
1466 | void restore_line_number_status PARAMS ((int old_value)); | |
1467 | extern void renumber_insns PARAMS ((FILE *)); | |
1468 | extern void remove_unncessary_notes PARAMS ((void)); | |
ac957f13 JL |
1469 | |
1470 | /* In insn-emit.c */ | |
cdadb1dd | 1471 | extern void add_clobbers PARAMS ((rtx, int)); |
ac957f13 JL |
1472 | |
1473 | /* In combine.c */ | |
44a76fc8 | 1474 | extern int combine_instructions PARAMS ((rtx, int)); |
cdadb1dd KG |
1475 | extern int extended_count PARAMS ((rtx, enum machine_mode, int)); |
1476 | extern rtx remove_death PARAMS ((int, rtx)); | |
ac957f13 | 1477 | #ifdef BUFSIZ |
cdadb1dd KG |
1478 | extern void dump_combine_stats PARAMS ((FILE *)); |
1479 | extern void dump_combine_total_stats PARAMS ((FILE *)); | |
ac957f13 JL |
1480 | #endif |
1481 | ||
1482 | /* In sched.c. */ | |
1483 | #ifdef BUFSIZ | |
cdadb1dd | 1484 | extern void schedule_insns PARAMS ((FILE *)); |
ac957f13 | 1485 | #endif |
cdadb1dd | 1486 | extern void fix_sched_param PARAMS ((const char *, const char *)); |
ac957f13 JL |
1487 | |
1488 | /* In print-rtl.c */ | |
cdadb1dd KG |
1489 | extern void debug_rtx PARAMS ((rtx)); |
1490 | extern void debug_rtx_list PARAMS ((rtx, int)); | |
1491 | extern rtx debug_rtx_find PARAMS ((rtx, int)); | |
ac957f13 | 1492 | #ifdef BUFSIZ |
cdadb1dd KG |
1493 | extern void print_rtl PARAMS ((FILE *, rtx)); |
1494 | extern int print_rtl_single PARAMS ((FILE *, rtx)); | |
1495 | extern void print_inline_rtx PARAMS ((FILE *, rtx, int)); | |
ac957f13 JL |
1496 | #endif |
1497 | ||
1498 | /* In loop.c */ | |
cdadb1dd KG |
1499 | extern void init_loop PARAMS ((void)); |
1500 | extern rtx libcall_other_reg PARAMS ((rtx, rtx)); | |
ac957f13 | 1501 | #ifdef BUFSIZ |
cdadb1dd | 1502 | extern void loop_optimize PARAMS ((rtx, FILE *, int, int)); |
ac957f13 | 1503 | #endif |
cdadb1dd | 1504 | extern void record_excess_regs PARAMS ((rtx, rtx, rtx *)); |
ac957f13 JL |
1505 | |
1506 | /* In function.c */ | |
cdadb1dd KG |
1507 | extern void reposition_prologue_and_epilogue_notes PARAMS ((rtx)); |
1508 | extern void thread_prologue_and_epilogue_insns PARAMS ((rtx)); | |
1509 | extern int prologue_epilogue_contains PARAMS ((rtx)); | |
cdadb1dd | 1510 | extern HOST_WIDE_INT get_frame_size PARAMS ((void)); |
591ccf92 | 1511 | extern void preserve_rtl_expr_result PARAMS ((rtx)); |
cdadb1dd KG |
1512 | extern void mark_temp_addr_taken PARAMS ((rtx)); |
1513 | extern void update_temp_slot_address PARAMS ((rtx, rtx)); | |
cdadb1dd | 1514 | extern void purge_addressof PARAMS ((rtx)); |
ac957f13 JL |
1515 | |
1516 | /* In reload.c */ | |
cdadb1dd KG |
1517 | extern int operands_match_p PARAMS ((rtx, rtx)); |
1518 | extern int safe_from_earlyclobber PARAMS ((rtx, rtx)); | |
ac957f13 JL |
1519 | |
1520 | /* In stmt.c */ | |
47ee9bcb | 1521 | extern void set_file_and_line_for_stmt PARAMS ((const char *, int)); |
cdadb1dd KG |
1522 | extern void expand_null_return PARAMS ((void)); |
1523 | extern void emit_jump PARAMS ((rtx)); | |
1524 | extern int preserve_subexpressions_p PARAMS ((void)); | |
ac957f13 JL |
1525 | |
1526 | /* In expr.c */ | |
cdadb1dd | 1527 | extern void init_expr_once PARAMS ((void)); |
729a2125 | 1528 | extern void move_by_pieces PARAMS ((rtx, rtx, int, unsigned int)); |
2e245dac | 1529 | |
ac957f13 | 1530 | /* In flow.c */ |
cdadb1dd KG |
1531 | extern void allocate_bb_life_data PARAMS ((void)); |
1532 | extern void allocate_reg_life_data PARAMS ((void)); | |
1533 | extern void recompute_reg_usage PARAMS ((rtx, int)); | |
ac957f13 | 1534 | #ifdef BUFSIZ |
cdadb1dd KG |
1535 | extern void print_rtl_with_bb PARAMS ((FILE *, rtx)); |
1536 | extern void dump_flow_info PARAMS ((FILE *)); | |
ac957f13 JL |
1537 | #endif |
1538 | ||
1539 | /* In expmed.c */ | |
cdadb1dd KG |
1540 | extern void init_expmed PARAMS ((void)); |
1541 | extern void expand_inc PARAMS ((rtx, rtx)); | |
1542 | extern void expand_dec PARAMS ((rtx, rtx)); | |
1543 | extern rtx expand_mult_highpart PARAMS ((enum machine_mode, rtx, | |
ac957f13 JL |
1544 | unsigned HOST_WIDE_INT, rtx, |
1545 | int, int)); | |
1546 | ||
50b2596f KG |
1547 | /* In gcse.c */ |
1548 | #ifdef BUFSIZ | |
cdadb1dd | 1549 | extern int gcse_main PARAMS ((rtx, FILE *)); |
50b2596f KG |
1550 | #endif |
1551 | ||
ac957f13 | 1552 | /* In global.c */ |
cdadb1dd | 1553 | extern void mark_elimination PARAMS ((int, int)); |
ac957f13 | 1554 | #ifdef BUFSIZ |
cdadb1dd KG |
1555 | extern int global_alloc PARAMS ((FILE *)); |
1556 | extern void dump_global_regs PARAMS ((FILE *)); | |
ac957f13 | 1557 | #endif |
cab634f2 | 1558 | #ifdef HARD_CONST |
cdadb1dd | 1559 | extern void retry_global_alloc PARAMS ((int, HARD_REG_SET)); |
cab634f2 | 1560 | #endif |
d29c259b | 1561 | extern void build_insn_chain PARAMS ((rtx)); |
ac957f13 JL |
1562 | |
1563 | /* In regclass.c */ | |
cdadb1dd KG |
1564 | extern int reg_classes_intersect_p PARAMS ((enum reg_class, enum reg_class)); |
1565 | extern int reg_class_subset_p PARAMS ((enum reg_class, enum reg_class)); | |
1566 | extern void globalize_reg PARAMS ((int)); | |
1567 | extern void init_regs PARAMS ((void)); | |
1568 | extern void init_reg_sets PARAMS ((void)); | |
1569 | extern void regset_release_memory PARAMS ((void)); | |
1570 | extern void regclass_init PARAMS ((void)); | |
1571 | extern void regclass PARAMS ((rtx, int, FILE *)); | |
1572 | extern void reg_scan PARAMS ((rtx, int, int)); | |
1573 | extern void reg_scan_update PARAMS ((rtx, rtx, int)); | |
1574 | extern void fix_register PARAMS ((const char *, int, int)); | |
1575 | ||
1576 | extern void delete_null_pointer_checks PARAMS ((rtx)); | |
a157febd | 1577 | |
50b2596f KG |
1578 | /* In regmove.c */ |
1579 | #ifdef BUFSIZ | |
cdadb1dd | 1580 | extern void regmove_optimize PARAMS ((rtx, int, FILE *)); |
50b2596f KG |
1581 | #endif |
1582 | ||
1583 | /* In reorg.c */ | |
1584 | #ifdef BUFSIZ | |
cdadb1dd | 1585 | extern void dbr_schedule PARAMS ((rtx, FILE *)); |
50b2596f KG |
1586 | #endif |
1587 | ||
ac957f13 | 1588 | /* In optabs.c */ |
cdadb1dd | 1589 | extern void init_optabs PARAMS ((void)); |
ac957f13 JL |
1590 | |
1591 | /* In local-alloc.c */ | |
1592 | #ifdef BUFSIZ | |
cdadb1dd | 1593 | extern void dump_local_alloc PARAMS ((FILE *)); |
ac957f13 | 1594 | #endif |
cdadb1dd KG |
1595 | extern int local_alloc PARAMS ((void)); |
1596 | extern int function_invariant_p PARAMS ((rtx)); | |
ac957f13 JL |
1597 | |
1598 | /* In reload1.c */ | |
cdadb1dd KG |
1599 | extern void reload_cse_regs PARAMS ((rtx)); |
1600 | extern void init_reload PARAMS ((void)); | |
1601 | extern void mark_home_live PARAMS ((int)); | |
ac957f13 | 1602 | #ifdef BUFSIZ |
cdadb1dd | 1603 | extern int reload PARAMS ((rtx, int, FILE *)); |
ac957f13 JL |
1604 | #endif |
1605 | ||
1606 | /* In caller-save.c */ | |
cdadb1dd | 1607 | extern void init_caller_save PARAMS ((void)); |
ac957f13 JL |
1608 | |
1609 | /* In profile.c */ | |
cdadb1dd | 1610 | extern void init_branch_prob PARAMS ((const char *)); |
50b2596f | 1611 | #ifdef BUFSIZ |
cdadb1dd KG |
1612 | extern void branch_prob PARAMS ((rtx, FILE *)); |
1613 | extern void end_branch_prob PARAMS ((FILE *)); | |
50b2596f | 1614 | #endif |
cdadb1dd | 1615 | extern void output_func_start_profiler PARAMS ((void)); |
ac957f13 JL |
1616 | |
1617 | /* In reg-stack.c */ | |
1618 | #ifdef BUFSIZ | |
cdadb1dd | 1619 | extern void reg_to_stack PARAMS ((rtx, FILE *)); |
ac957f13 | 1620 | #endif |
ac957f13 JL |
1621 | |
1622 | /* In fold-const.c */ | |
05bccae2 RK |
1623 | extern int add_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, |
1624 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1625 | unsigned HOST_WIDE_INT *, | |
1626 | HOST_WIDE_INT *)); | |
1627 | extern int neg_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1628 | unsigned HOST_WIDE_INT *, | |
1629 | HOST_WIDE_INT *)); | |
1630 | extern int mul_double PARAMS ((unsigned HOST_WIDE_INT, | |
1631 | HOST_WIDE_INT, | |
1632 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1633 | unsigned HOST_WIDE_INT *, | |
1634 | HOST_WIDE_INT *)); | |
1635 | extern void lshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1636 | HOST_WIDE_INT, unsigned int, | |
1637 | unsigned HOST_WIDE_INT *, | |
1638 | HOST_WIDE_INT *, int)); | |
1639 | extern void rshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1640 | HOST_WIDE_INT, unsigned int, | |
1641 | unsigned HOST_WIDE_INT *, | |
1642 | HOST_WIDE_INT *, int)); | |
1643 | extern void lrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1644 | HOST_WIDE_INT, unsigned int, | |
1645 | unsigned HOST_WIDE_INT *, | |
1646 | HOST_WIDE_INT *)); | |
1647 | extern void rrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1648 | HOST_WIDE_INT, unsigned int, | |
1649 | unsigned HOST_WIDE_INT *, | |
1650 | HOST_WIDE_INT *)); | |
ac957f13 JL |
1651 | |
1652 | /* In calls.c */ | |
cdadb1dd | 1653 | extern void emit_library_call PARAMS ((rtx, int, enum machine_mode, |
ac957f13 | 1654 | int, ...)); |
cdadb1dd | 1655 | extern rtx emit_library_call_value PARAMS ((rtx, rtx, int, |
ac957f13 JL |
1656 | enum machine_mode, |
1657 | int, ...)); | |
1658 | ||
1659 | /* In unroll.c */ | |
cdadb1dd | 1660 | extern int set_dominates_use PARAMS ((int, int, int, rtx, rtx)); |
ac957f13 JL |
1661 | |
1662 | /* In varasm.c */ | |
cdadb1dd KG |
1663 | extern void bss_section PARAMS ((void)); |
1664 | extern int in_data_section PARAMS ((void)); | |
1665 | extern int supports_one_only PARAMS ((void)); | |
1666 | extern void init_varasm_once PARAMS ((void)); | |
ac957f13 JL |
1667 | |
1668 | /* In rtl.c */ | |
cdadb1dd KG |
1669 | extern void init_rtl PARAMS ((void)); |
1670 | extern void rtx_free PARAMS ((rtx)); | |
ac957f13 | 1671 | |
bcdaba58 | 1672 | #ifdef BUFSIZ |
cdadb1dd KG |
1673 | extern int read_skip_spaces PARAMS ((FILE *)); |
1674 | extern rtx read_rtx PARAMS ((FILE *)); | |
bcdaba58 RH |
1675 | #endif |
1676 | ||
1677 | extern const char *read_rtx_filename; | |
1678 | extern int read_rtx_lineno; | |
1679 | ||
987009bf ZW |
1680 | /* Redefine abort to report an internal error w/o coredump, and |
1681 | reporting the location of the error in the source file. This logic | |
1682 | is duplicated in rtl.h and tree.h because every file that needs the | |
1683 | special abort includes one or both. toplev.h gets too few files, | |
1684 | system.h gets too many. */ | |
1685 | ||
cdadb1dd | 1686 | extern void fancy_abort PARAMS ((const char *, int, const char *)) |
987009bf | 1687 | ATTRIBUTE_NORETURN; |
6c9821b7 | 1688 | #if (GCC_VERSION >= 2007) |
987009bf | 1689 | #define abort() fancy_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__) |
6c9821b7 PDM |
1690 | #else |
1691 | #define abort() fancy_abort (__FILE__, __LINE__, 0) | |
987009bf ZW |
1692 | #endif |
1693 | ||
ac957f13 | 1694 | /* In alias.c */ |
cdadb1dd | 1695 | extern int true_dependence PARAMS ((rtx, enum machine_mode, rtx, |
ac957f13 | 1696 | int (*)(rtx))); |
cdadb1dd KG |
1697 | extern int read_dependence PARAMS ((rtx, rtx)); |
1698 | extern int anti_dependence PARAMS ((rtx, rtx)); | |
1699 | extern int output_dependence PARAMS ((rtx, rtx)); | |
1700 | extern void mark_constant_function PARAMS ((void)); | |
1701 | extern void init_alias_once PARAMS ((void)); | |
1702 | extern void init_alias_analysis PARAMS ((void)); | |
1703 | extern void end_alias_analysis PARAMS ((void)); | |
1704 | ||
1705 | extern void record_base_value PARAMS ((int, rtx, int)); | |
1706 | extern void record_alias_subset PARAMS ((int, int)); | |
1707 | extern rtx addr_side_effect_eval PARAMS ((rtx, int, int)); | |
4c649323 | 1708 | |
21b2cd73 | 1709 | #ifdef STACK_REGS |
cdadb1dd | 1710 | extern int stack_regs_mentioned PARAMS ((rtx insn)); |
21b2cd73 JH |
1711 | #endif |
1712 | ||
a157febd GK |
1713 | /* In toplev.c */ |
1714 | ||
1715 | extern rtx stack_limit_rtx; | |
dfdb644f | 1716 | |
ac957f13 | 1717 | #endif /* _RTL_H */ |