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6f29feb1 | 1 | /* Register Transfer Language (RTL) definitions for GNU C-Compiler |
af841dbd | 2 | Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
90a74703 | 3 | 1999, 2000, 2001 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 | |
88657302 RH |
22 | #ifndef GCC_RTL_H |
23 | #define GCC_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 | 89 | int rtint; |
770ae6cc | 90 | unsigned int rtuint; |
3cce094d | 91 | const char *rtstr; |
6f29feb1 JW |
92 | struct rtx_def *rtx; |
93 | struct rtvec_def *rtvec; | |
94 | enum machine_mode rttype; | |
33f7f353 | 95 | addr_diff_vec_flags rt_addr_diff_vec_flags; |
eab5c70a | 96 | struct cselib_val_struct *rt_cselib; |
0dfa1860 MM |
97 | struct bitmap_head_def *rtbit; |
98 | union tree_node *rttree; | |
e881bb1b | 99 | struct basic_block_def *bb; |
6f29feb1 JW |
100 | } rtunion; |
101 | ||
102 | /* RTL expression ("rtx"). */ | |
103 | ||
104 | typedef struct rtx_def | |
105 | { | |
6f29feb1 | 106 | /* The kind of expression this is. */ |
c149cc37 | 107 | ENUM_BITFIELD(rtx_code) code: 16; |
18def38f | 108 | |
6f29feb1 | 109 | /* The kind of value the expression has. */ |
c149cc37 RL |
110 | ENUM_BITFIELD(machine_mode) mode : 8; |
111 | ||
0a1c58a2 JL |
112 | /* 1 in an INSN if it can alter flow of control |
113 | within this function. | |
114 | LINK_COST_ZERO in an INSN_LIST. */ | |
6f29feb1 | 115 | unsigned int jump : 1; |
0a1c58a2 JL |
116 | /* 1 in an INSN if it can call another function. |
117 | LINK_COST_FREE in an INSN_LIST. */ | |
6f29feb1 | 118 | unsigned int call : 1; |
49982682 JW |
119 | /* 1 in a REG if value of this expression will never change during |
120 | the current function, even though it is not manifestly constant. | |
121 | 1 in a MEM if contents of memory are constant. This does not | |
122 | necessarily mean that the value of this expression is constant. | |
07be3989 | 123 | 1 in a SUBREG if it is from a promoted variable that is unsigned. |
6f29feb1 JW |
124 | 1 in a SYMBOL_REF if it addresses something in the per-function |
125 | constants pool. | |
126 | 1 in a CALL_INSN if it is a const call. | |
127 | 1 in a JUMP_INSN if it is a branch that should be annulled. Valid from | |
128 | reorg until end of compilation; cleared before used. */ | |
129 | unsigned int unchanging : 1; | |
130 | /* 1 in a MEM expression if contents of memory are volatile. | |
131 | 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL or BARRIER | |
132 | if it is deleted. | |
133 | 1 in a REG expression if corresponds to a variable declared by the user. | |
134 | 0 for an internally generated temporary. | |
2a406d2a RS |
135 | In a SYMBOL_REF, this flag is used for machine-specific purposes. |
136 | In a LABEL_REF or in a REG_LABEL note, this is LABEL_REF_NONLOCAL_P. */ | |
6f29feb1 | 137 | unsigned int volatil : 1; |
8358a974 | 138 | /* 1 in a MEM referring to a field of an aggregate. |
6f29feb1 JW |
139 | 0 if the MEM was a variable or the result of a * operator in C; |
140 | 1 if it was the result of a . or -> operator (on a struct) in C. | |
141 | 1 in a REG if the register is used only in exit code a loop. | |
f590cca1 | 142 | 1 in a SUBREG expression if was generated from a variable with a |
07be3989 | 143 | promoted mode. |
6f29feb1 JW |
144 | 1 in a CODE_LABEL if the label is used for nonlocal gotos |
145 | and must not be deleted even if its count is zero. | |
146 | 1 in a LABEL_REF if this is a reference to a label outside the | |
147 | current loop. | |
148 | 1 in an INSN, JUMP_INSN, or CALL_INSN if this insn must be scheduled | |
d45cf215 | 149 | together with the preceding insn. Valid only within sched. |
6f29feb1 JW |
150 | 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and |
151 | from the target of a branch. Valid from reorg until end of compilation; | |
b53978a3 JO |
152 | cleared before used. |
153 | 1 in an INSN if this insn is dead code. Valid only during | |
154 | dead-code elimination phase; cleared before use. */ | |
6f29feb1 JW |
155 | unsigned int in_struct : 1; |
156 | /* 1 if this rtx is used. This is used for copying shared structure. | |
157 | See `unshare_all_rtl'. | |
f590cca1 | 158 | In a REG, this is not needed for that purpose, and used instead |
6f29feb1 JW |
159 | in `leaf_renumber_regs_insn'. |
160 | In a SYMBOL_REF, means that emit_library_call | |
161 | has used it as the function. */ | |
162 | unsigned int used : 1; | |
163 | /* Nonzero if this rtx came from procedure integration. | |
164 | In a REG, nonzero means this reg refers to the return value | |
ff0b6b99 FS |
165 | of the current function. |
166 | 1 in a SYMBOL_REF if the symbol is weak. */ | |
6f29feb1 | 167 | unsigned integrated : 1; |
b664de3a | 168 | /* 1 in an INSN or a SET if this rtx is related to the call frame, |
c6df88cb | 169 | either changing how we compute the frame address or saving and |
f590cca1 | 170 | restoring registers in the prologue and epilogue. |
c6df88cb | 171 | 1 in a MEM if the MEM refers to a scalar, rather than a member of |
bd7cf17e | 172 | an aggregate. |
3502dc9c | 173 | 1 in a REG if the register is a pointer. |
bd7cf17e JJ |
174 | 1 in a SYMBOL_REF if it addresses something in the per-function |
175 | constant string pool. */ | |
469ac993 | 176 | unsigned frame_related : 1; |
0a25f1f5 | 177 | |
6f29feb1 JW |
178 | /* The first element of the operands of this rtx. |
179 | The number of operands and their types are controlled | |
180 | by the `code' field, according to rtl.def. */ | |
181 | rtunion fld[1]; | |
182 | } *rtx; | |
183 | ||
184 | #define NULL_RTX (rtx) 0 | |
185 | ||
186 | /* Define macros to access the `code' field of the rtx. */ | |
187 | ||
dbbbbf3b JDA |
188 | #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) |
189 | #define PUT_CODE(RTX, CODE) ((RTX)->code = (ENUM_BITFIELD(rtx_code)) (CODE)) | |
6f29feb1 | 190 | |
dbbbbf3b JDA |
191 | #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) |
192 | #define PUT_MODE(RTX, MODE) ((RTX)->mode = (ENUM_BITFIELD(machine_mode)) (MODE)) | |
6f29feb1 JW |
193 | |
194 | #define RTX_INTEGRATED_P(RTX) ((RTX)->integrated) | |
195 | #define RTX_UNCHANGING_P(RTX) ((RTX)->unchanging) | |
469ac993 | 196 | #define RTX_FRAME_RELATED_P(RTX) ((RTX)->frame_related) |
6f29feb1 JW |
197 | |
198 | /* RTL vector. These appear inside RTX's when there is a need | |
199 | for a variable number of things. The principle use is inside | |
200 | PARALLEL expressions. */ | |
201 | ||
202 | typedef struct rtvec_def{ | |
e9a25f70 | 203 | int num_elem; /* number of elements */ |
8f985ec4 | 204 | struct rtx_def *elem[1]; |
6f29feb1 JW |
205 | } *rtvec; |
206 | ||
207 | #define NULL_RTVEC (rtvec) 0 | |
208 | ||
209 | #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) | |
e9a25f70 | 210 | #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) |
6f29feb1 | 211 | |
b53978a3 | 212 | /* Predicate yielding nonzero iff X is an rtl for a register. */ |
6f29feb1 JW |
213 | #define REG_P(X) (GET_CODE (X) == REG) |
214 | ||
b53978a3 JO |
215 | /* Predicate yielding nonzero iff X is a label insn. */ |
216 | #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) | |
217 | ||
218 | /* Predicate yielding nonzero iff X is a jump insn. */ | |
219 | #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) | |
220 | ||
221 | /* Predicate yielding nonzero iff X is a note insn. */ | |
222 | #define NOTE_P(X) (GET_CODE (X) == NOTE) | |
223 | ||
224 | /* Predicate yielding nonzero iff X is a barrier insn. */ | |
225 | #define BARRIER_P(X) (GET_CODE (X) == BARRIER) | |
226 | ||
227 | /* Predicate yielding nonzero iff X is a data for a jump table. */ | |
228 | #define JUMP_TABLE_DATA_P(INSN) \ | |
229 | (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ | |
230 | GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) | |
231 | ||
6f29feb1 JW |
232 | /* 1 if X is a constant value that is an integer. */ |
233 | ||
234 | #define CONSTANT_P(X) \ | |
235 | (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ | |
236 | || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \ | |
ee5332b8 RH |
237 | || GET_CODE (X) == CONST || GET_CODE (X) == HIGH \ |
238 | || GET_CODE (X) == CONSTANT_P_RTX) | |
6f29feb1 JW |
239 | |
240 | /* General accessor macros for accessing the fields of an rtx. */ | |
241 | ||
f4524c9e | 242 | #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) |
ef178af3 ZW |
243 | /* The bit with a star outside the statement expr and an & inside is |
244 | so that N can be evaluated only once. */ | |
8784fdcd | 245 | #define RTL_CHECK1(RTX, N, C1) __extension__ \ |
83ab3839 | 246 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
247 | enum rtx_code _code = GET_CODE (_rtx); \ |
248 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
fbfc1192 | 249 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, __FUNCTION__); \ |
ef178af3 | 250 | if (GET_RTX_FORMAT(_code)[_n] != C1) \ |
fbfc1192 | 251 | rtl_check_failed_type1(_rtx, _n, C1, __FILE__, __LINE__, __FUNCTION__); \ |
ef178af3 ZW |
252 | &_rtx->fld[_n]; })) |
253 | ||
8784fdcd | 254 | #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ |
83ab3839 | 255 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
256 | enum rtx_code _code = GET_CODE (_rtx); \ |
257 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
fbfc1192 | 258 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, __FUNCTION__); \ |
ef178af3 ZW |
259 | if (GET_RTX_FORMAT(_code)[_n] != C1 \ |
260 | && GET_RTX_FORMAT(_code)[_n] != C2) \ | |
261 | rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ | |
fbfc1192 | 262 | __FUNCTION__); \ |
ef178af3 ZW |
263 | &_rtx->fld[_n]; })) |
264 | ||
8784fdcd | 265 | #define RTL_CHECKC1(RTX, N, C) __extension__ \ |
83ab3839 RH |
266 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
267 | if (GET_CODE (_rtx) != C) \ | |
fbfc1192 | 268 | rtl_check_failed_code1 (_rtx, C, __FILE__, __LINE__, __FUNCTION__); \ |
83ab3839 RH |
269 | &_rtx->fld[_n]; })) |
270 | ||
8784fdcd | 271 | #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ |
83ab3839 RH |
272 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
273 | enum rtx_code _code = GET_CODE (_rtx); \ | |
274 | if (_code != C1 && _code != C2) \ | |
fbfc1192 | 275 | rtl_check_failed_code2(_rtx, C1, C2, __FILE__, __LINE__, __FUNCTION__); \ |
83ab3839 RH |
276 | &_rtx->fld[_n]; })) |
277 | ||
8784fdcd | 278 | #define RTVEC_ELT(RTVEC, I) __extension__ \ |
83ab3839 | 279 | (*({ rtvec _rtvec = (RTVEC); int _i = (I); \ |
ef178af3 ZW |
280 | if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ |
281 | rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ | |
fbfc1192 | 282 | __FUNCTION__); \ |
ef178af3 ZW |
283 | &_rtvec->elem[_i]; })) |
284 | ||
cdadb1dd | 285 | extern void rtl_check_failed_bounds PARAMS ((rtx, int, |
ef178af3 ZW |
286 | const char *, int, const char *)) |
287 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 288 | extern void rtl_check_failed_type1 PARAMS ((rtx, int, int, |
ef178af3 ZW |
289 | const char *, int, const char *)) |
290 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 291 | extern void rtl_check_failed_type2 PARAMS ((rtx, int, int, int, |
ef178af3 ZW |
292 | const char *, int, const char *)) |
293 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 294 | extern void rtl_check_failed_code1 PARAMS ((rtx, enum rtx_code, |
83ab3839 RH |
295 | const char *, int, const char *)) |
296 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 297 | extern void rtl_check_failed_code2 PARAMS ((rtx, enum rtx_code, enum rtx_code, |
83ab3839 RH |
298 | const char *, int, const char *)) |
299 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 300 | extern void rtvec_check_failed_bounds PARAMS ((rtvec, int, |
ef178af3 ZW |
301 | const char *, int, const char *)) |
302 | ATTRIBUTE_NORETURN; | |
303 | ||
f4524c9e | 304 | #else /* not ENABLE_RTL_CHECKING */ |
ef178af3 | 305 | |
83ab3839 RH |
306 | #define RTL_CHECK1(RTX, N, C1) ((RTX)->fld[N]) |
307 | #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->fld[N]) | |
308 | #define RTL_CHECKC1(RTX, N, C) ((RTX)->fld[N]) | |
818a3b15 | 309 | #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->fld[N]) |
83ab3839 | 310 | #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) |
ef178af3 ZW |
311 | |
312 | #endif | |
313 | ||
314 | #define XWINT(RTX, N) (RTL_CHECK1(RTX, N, 'w').rtwint) | |
315 | #define XINT(RTX, N) (RTL_CHECK2(RTX, N, 'i', 'n').rtint) | |
316 | #define XSTR(RTX, N) (RTL_CHECK2(RTX, N, 's', 'S').rtstr) | |
317 | #define XEXP(RTX, N) (RTL_CHECK2(RTX, N, 'e', 'u').rtx) | |
318 | #define XVEC(RTX, N) (RTL_CHECK2(RTX, N, 'E', 'V').rtvec) | |
319 | #define XMODE(RTX, N) (RTL_CHECK1(RTX, N, 'M').rttype) | |
320 | #define XBITMAP(RTX, N) (RTL_CHECK1(RTX, N, 'b').rtbit) | |
321 | #define XTREE(RTX, N) (RTL_CHECK1(RTX, N, 't').rttree) | |
322 | #define XBBDEF(RTX, N) (RTL_CHECK1(RTX, N, 'B').bb) | |
1f3b37a3 | 323 | #define XTMPL(RTX, N) (RTL_CHECK1(RTX, N, 'T').rtstr) |
ef178af3 ZW |
324 | |
325 | #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) | |
326 | #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) | |
327 | ||
328 | /* These are like XWINT, etc. except that they expect a '0' field instead | |
329 | of the normal type code. */ | |
330 | ||
331 | #define X0WINT(RTX, N) (RTL_CHECK1(RTX, N, '0').rtwint) | |
332 | #define X0INT(RTX, N) (RTL_CHECK1(RTX, N, '0').rtint) | |
08394eef | 333 | #define X0UINT(RTX, N) (RTL_CHECK1(RTX, N, '0').rtuint) |
ef178af3 ZW |
334 | #define X0STR(RTX, N) (RTL_CHECK1(RTX, N, '0').rtstr) |
335 | #define X0EXP(RTX, N) (RTL_CHECK1(RTX, N, '0').rtx) | |
336 | #define X0VEC(RTX, N) (RTL_CHECK1(RTX, N, '0').rtvec) | |
337 | #define X0MODE(RTX, N) (RTL_CHECK1(RTX, N, '0').rttype) | |
338 | #define X0BITMAP(RTX, N) (RTL_CHECK1(RTX, N, '0').rtbit) | |
339 | #define X0TREE(RTX, N) (RTL_CHECK1(RTX, N, '0').rttree) | |
340 | #define X0BBDEF(RTX, N) (RTL_CHECK1(RTX, N, '0').bb) | |
341 | #define X0ADVFLAGS(RTX, N) (RTL_CHECK1(RTX, N, '0').rt_addr_diff_vec_flags) | |
eab5c70a | 342 | #define X0CSELIB(RTX, N) (RTL_CHECK1(RTX, N, '0').rt_cselib) |
0dfa1860 | 343 | |
83ab3839 RH |
344 | #define XCWINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtwint) |
345 | #define XCINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtint) | |
770ae6cc | 346 | #define XCUINT(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtuint) |
83ab3839 RH |
347 | #define XCSTR(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtstr) |
348 | #define XCEXP(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtx) | |
349 | #define XCVEC(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtvec) | |
350 | #define XCMODE(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rttype) | |
351 | #define XCBITMAP(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rtbit) | |
352 | #define XCTREE(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rttree) | |
353 | #define XCBBDEF(RTX, N, C) (RTL_CHECKC1(RTX, N, C).bb) | |
354 | #define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rt_addr_diff_vec_flags) | |
eab5c70a | 355 | #define XCCSELIB(RTX, N, C) (RTL_CHECKC1(RTX, N, C).rt_cselib) |
83ab3839 RH |
356 | |
357 | #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) | |
358 | #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) | |
359 | ||
360 | #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2(RTX, N, C1, C2).rtx) | |
6f29feb1 JW |
361 | \f |
362 | /* ACCESS MACROS for particular fields of insns. */ | |
363 | ||
4e872036 AS |
364 | /* Determines whether X is an insn. */ |
365 | #define INSN_P(X) (GET_RTX_CLASS (GET_CODE(X)) == 'i') | |
366 | ||
6f29feb1 JW |
367 | /* Holds a unique number for each insn. |
368 | These are not necessarily sequentially increasing. */ | |
8f985ec4 | 369 | #define INSN_UID(INSN) XINT(INSN, 0) |
6f29feb1 JW |
370 | |
371 | /* Chain insns together in sequence. */ | |
8f985ec4 ZW |
372 | #define PREV_INSN(INSN) XEXP(INSN, 1) |
373 | #define NEXT_INSN(INSN) XEXP(INSN, 2) | |
6f29feb1 JW |
374 | |
375 | /* The body of an insn. */ | |
8f985ec4 | 376 | #define PATTERN(INSN) XEXP(INSN, 3) |
6f29feb1 JW |
377 | |
378 | /* Code number of instruction, from when it was recognized. | |
379 | -1 means this instruction has not been recognized yet. */ | |
8f985ec4 | 380 | #define INSN_CODE(INSN) XINT(INSN, 4) |
6f29feb1 JW |
381 | |
382 | /* Set up in flow.c; empty before then. | |
383 | Holds a chain of INSN_LIST rtx's whose first operands point at | |
384 | previous insns with direct data-flow connections to this one. | |
385 | That means that those insns set variables whose next use is in this insn. | |
386 | They are always in the same basic block as this insn. */ | |
8f985ec4 | 387 | #define LOG_LINKS(INSN) XEXP(INSN, 5) |
6f29feb1 JW |
388 | |
389 | /* 1 if insn has been deleted. */ | |
390 | #define INSN_DELETED_P(INSN) ((INSN)->volatil) | |
391 | ||
392 | /* 1 if insn is a call to a const function. */ | |
393 | #define CONST_CALL_P(INSN) ((INSN)->unchanging) | |
394 | ||
0a1c58a2 JL |
395 | /* 1 if insn (assumed to be a CALL_INSN) is a sibling call. */ |
396 | #define SIBLING_CALL_P(INSN) ((INSN)->jump) | |
397 | ||
6f29feb1 JW |
398 | /* 1 if insn is a branch that should not unconditionally execute its |
399 | delay slots, i.e., it is an annulled branch. */ | |
400 | #define INSN_ANNULLED_BRANCH_P(INSN) ((INSN)->unchanging) | |
401 | ||
b53978a3 JO |
402 | /* 1 if insn is a dead code. Valid only for dead-code elimination phase. */ |
403 | #define INSN_DEAD_CODE_P(INSN) ((INSN)->in_struct) | |
404 | ||
6f29feb1 | 405 | /* 1 if insn is in a delay slot and is from the target of the branch. If |
6dc42e49 | 406 | the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be |
6f29feb1 JW |
407 | executed if the branch is taken. For annulled branches with this bit |
408 | clear, the insn should be executed only if the branch is not taken. */ | |
409 | #define INSN_FROM_TARGET_P(INSN) ((INSN)->in_struct) | |
410 | ||
f590cca1 RH |
411 | #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) |
412 | ||
413 | #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) | |
414 | ||
6f29feb1 | 415 | /* Holds a list of notes on what this insn does to various REGs. |
f590cca1 RH |
416 | It is a chain of EXPR_LIST rtx's, where the second operand is the |
417 | chain pointer and the first operand is the REG being described. | |
6f29feb1 | 418 | The mode field of the EXPR_LIST contains not a real machine mode |
f590cca1 | 419 | but a value from enum reg_note. */ |
6f29feb1 | 420 | |
8f985ec4 | 421 | #define REG_NOTES(INSN) XEXP(INSN, 6) |
6f29feb1 JW |
422 | |
423 | /* Don't forget to change reg_note_name in rtl.c. */ | |
f590cca1 RH |
424 | enum reg_note |
425 | { | |
426 | /* The value in REG dies in this insn (i.e., it is not needed past | |
427 | this insn). If REG is set in this insn, the REG_DEAD note may, | |
428 | but need not, be omitted. */ | |
429 | REG_DEAD = 1, | |
430 | ||
431 | /* The REG is autoincremented or autodecremented. */ | |
432 | REG_INC, | |
433 | ||
434 | /* Describes the insn as a whole; it says that the insn sets a register | |
435 | to a constant value or to be equivalent to a memory address. If the | |
436 | register is spilled to the stack then the constant value should be | |
437 | substituted for it. The contents of the REG_EQUIV is the constant | |
438 | value or memory address, which may be different from the source of | |
439 | the SET although it has the same value. A REG_EQUIV note may also | |
440 | appear on an insn which copies a register parameter to a pseudo-register, | |
441 | if there is a memory address which could be used to hold that | |
442 | pseudo-register throughout the function. */ | |
be1bb652 | 443 | REG_EQUIV, |
f590cca1 RH |
444 | |
445 | /* Like REG_EQUIV except that the destination is only momentarily equal | |
446 | to the specified rtx. Therefore, it cannot be used for substitution; | |
447 | but it can be used for cse. */ | |
448 | REG_EQUAL, | |
449 | ||
450 | /* The register set in this insn held 0 before the insn. The contents of | |
451 | the note is the insn that stored the 0. If that insn is deleted or | |
452 | patched to a NOTE, the REG_WAS_0 is inoperative. The REG_WAS_0 note | |
453 | is actually an INSN_LIST, not an EXPR_LIST. */ | |
454 | REG_WAS_0, | |
455 | ||
456 | /* This insn copies the return-value of a library call out of the hard reg | |
457 | for return values. This note is actually an INSN_LIST and it points to | |
458 | the first insn involved in setting up arguments for the call. flow.c | |
459 | uses this to delete the entire library call when its result is dead. */ | |
460 | REG_RETVAL, | |
461 | ||
462 | /* The inverse of REG_RETVAL: it goes on the first insn of the library call | |
be1bb652 RH |
463 | and points at the one that has the REG_RETVAL. This note is also an |
464 | INSN_LIST. */ | |
f590cca1 RH |
465 | REG_LIBCALL, |
466 | ||
467 | /* The register is always nonnegative during the containing loop. This is | |
468 | used in branches so that decrement and branch instructions terminating | |
469 | on zero can be matched. There must be an insn pattern in the md file | |
470 | named `decrement_and_branch_until_zero' or else this will never be added | |
471 | to any instructions. */ | |
472 | REG_NONNEG, | |
473 | ||
474 | /* There is no conflict *after this insn* between the register in the note | |
475 | and the destination of this insn. */ | |
476 | REG_NO_CONFLICT, | |
477 | ||
478 | /* Identifies a register set in this insn and never used. */ | |
479 | REG_UNUSED, | |
480 | ||
481 | /* REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use CC0, | |
482 | respectively. Normally, these are required to be consecutive insns, but | |
483 | we permit putting a cc0-setting insn in the delay slot of a branch as | |
484 | long as only one copy of the insn exists. In that case, these notes | |
485 | point from one to the other to allow code generation to determine what | |
be1bb652 RH |
486 | any require information and to properly update CC_STATUS. These notes |
487 | are INSN_LISTs. */ | |
f590cca1 RH |
488 | REG_CC_SETTER, REG_CC_USER, |
489 | ||
490 | /* Points to a CODE_LABEL. Used by non-JUMP_INSNs to say that the | |
be1bb652 RH |
491 | CODE_LABEL contained in the REG_LABEL note is used by the insn. |
492 | This note is an INSN_LIST. */ | |
f590cca1 RH |
493 | REG_LABEL, |
494 | ||
495 | /* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent | |
496 | write-after-read and write-after-write dependencies respectively. | |
497 | Data dependencies, which are the only type of LOG_LINK created by | |
498 | flow, are represented by a 0 reg note kind. */ | |
499 | REG_DEP_ANTI, REG_DEP_OUTPUT, | |
500 | ||
4db384c9 JH |
501 | /* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs. |
502 | It has an integer value. For jumps, it is the probability that this is a | |
503 | taken branch. For calls, it is the probability that this call won't | |
504 | return. */ | |
f590cca1 RH |
505 | REG_BR_PROB, |
506 | ||
507 | /* REG_EXEC_COUNT is attached to the first insn of each basic block, and | |
508 | the first insn after each CALL_INSN. It indicates how many times this | |
509 | block was executed. */ | |
510 | REG_EXEC_COUNT, | |
511 | ||
512 | /* Attached to a call insn; indicates that the call is malloc-like and | |
513 | that the pointer returned cannot alias anything else. */ | |
514 | REG_NOALIAS, | |
515 | ||
516 | /* Used to optimize rtl generated by dynamic stack allocations for targets | |
517 | where SETJMP_VIA_SAVE_AREA is true. */ | |
518 | REG_SAVE_AREA, | |
519 | ||
4db384c9 JH |
520 | /* REG_BR_PRED is attached to JUMP_INSNs and CALL_INSNSs. It contains |
521 | CONCAT of two integer value. First specifies the branch predictor | |
522 | that added the note, second specifies the predicted hitrate of branch | |
523 | in the same format as REG_BR_PROB note uses. */ | |
f590cca1 RH |
524 | REG_BR_PRED, |
525 | ||
526 | /* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex | |
527 | for DWARF to interpret what they imply. The attached rtx is used | |
528 | instead of intuition. */ | |
529 | REG_FRAME_RELATED_EXPR, | |
530 | ||
531 | /* Indicates that REG holds the exception context for the function. | |
532 | This context is shared by inline functions, so the code to acquire | |
533 | the real exception context is delayed until after inlining. */ | |
534 | REG_EH_CONTEXT, | |
535 | ||
536 | /* Indicates what exception region an INSN belongs in. This is used to | |
537 | indicate what region to which a call may throw. REGION 0 indicates | |
538 | that a call cannot throw at all. REGION -1 indicates that it cannot | |
539 | throw, nor will it execute a non-local goto. */ | |
540 | REG_EH_REGION, | |
541 | ||
542 | /* Indicates that a call is actually a call to rethrow, and specifies the | |
543 | rethrow symbol for the region the rethrow is targetting. This provides | |
544 | a way to generate the non standard flow edges required for a rethrow. */ | |
545 | REG_EH_RETHROW, | |
546 | ||
547 | /* Used by haifa-sched to save NOTE_INSN notes across scheduling. */ | |
8cd8f856 GK |
548 | REG_SAVE_NOTE, |
549 | ||
550 | /* Indicates that this insn (which is part of the prologue) computes | |
551 | a value which might not be used later, and if so it's OK to delete | |
552 | the insn. Normally, deleting any insn in the prologue is an error. | |
553 | At present the parameter is unused and set to (const_int 0). */ | |
ca3920ad JW |
554 | REG_MAYBE_DEAD, |
555 | ||
556 | /* Indicates that a call does not return. */ | |
4b01bd16 RH |
557 | REG_NORETURN, |
558 | ||
559 | /* Indicates that an indirect jump is a non-local goto instead of a | |
560 | computed goto. */ | |
561 | REG_NON_LOCAL_GOTO | |
f590cca1 RH |
562 | }; |
563 | ||
7ae21caf DE |
564 | /* The base value for branch probability notes. */ |
565 | #define REG_BR_PROB_BASE 10000 | |
6f29feb1 JW |
566 | |
567 | /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ | |
568 | #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) | |
569 | #define PUT_REG_NOTE_KIND(LINK,KIND) PUT_MODE(LINK, (enum machine_mode) (KIND)) | |
570 | ||
571 | /* Names for REG_NOTE's in EXPR_LIST insn's. */ | |
572 | ||
1f9a015e | 573 | extern const char * const reg_note_name[]; |
0f41302f | 574 | #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) |
6f29feb1 | 575 | |
e51c6661 RK |
576 | /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of |
577 | USE and CLOBBER expressions. | |
578 | USE expressions list the registers filled with arguments that | |
579 | are passed to the function. | |
580 | CLOBBER expressions document the registers explicitly clobbered | |
581 | by this CALL_INSN. | |
582 | Pseudo registers can not be mentioned in this list. */ | |
8f985ec4 | 583 | #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7) |
e51c6661 | 584 | |
6f29feb1 JW |
585 | /* The label-number of a code-label. The assembler label |
586 | is made from `L' and the label-number printed in decimal. | |
587 | Label numbers are unique in a compilation. */ | |
be1bb652 | 588 | #define CODE_LABEL_NUMBER(INSN) XINT(INSN, 5) |
6f29feb1 JW |
589 | |
590 | #define LINE_NUMBER NOTE | |
591 | ||
0dfa1860 MM |
592 | /* In a NOTE that is a line number, this is a string for the file name that the |
593 | line is in. We use the same field to record block numbers temporarily in | |
594 | NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts | |
595 | between ints and pointers if we use a different macro for the block number.) | |
596 | The NOTE_INSN_RANGE_{START,END} and NOTE_INSN_LIVE notes record their | |
597 | information as a rtx in the field. */ | |
6f29feb1 | 598 | |
83ab3839 | 599 | #define NOTE_SOURCE_FILE(INSN) XCSTR(INSN, 3, NOTE) |
1a4450c7 | 600 | #define NOTE_BLOCK(INSN) XCTREE(INSN, 3, NOTE) |
83ab3839 RH |
601 | #define NOTE_EH_HANDLER(INSN) XCINT(INSN, 3, NOTE) |
602 | #define NOTE_RANGE_INFO(INSN) XCEXP(INSN, 3, NOTE) | |
603 | #define NOTE_LIVE_INFO(INSN) XCEXP(INSN, 3, NOTE) | |
604 | #define NOTE_BASIC_BLOCK(INSN) XCBBDEF(INSN, 3, NOTE) | |
994a57cd | 605 | #define NOTE_EXPECTED_VALUE(INSN) XCEXP(INSN, 3, NOTE) |
0dfa1860 | 606 | |
6f29feb1 JW |
607 | /* In a NOTE that is a line number, this is the line number. |
608 | Other kinds of NOTEs are identified by negative numbers here. */ | |
83ab3839 | 609 | #define NOTE_LINE_NUMBER(INSN) XCINT(INSN, 4, NOTE) |
6f29feb1 | 610 | |
589ca5cb MM |
611 | /* Nonzero if INSN is a note marking the beginning of a basic block. */ |
612 | #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ | |
613 | (GET_CODE (INSN) == NOTE \ | |
614 | && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK) | |
615 | ||
6f29feb1 | 616 | /* Codes that appear in the NOTE_LINE_NUMBER field |
a31efb86 | 617 | for kinds of notes that are not line numbers. |
6f29feb1 | 618 | |
a31efb86 DE |
619 | Notice that we do not try to use zero here for any of |
620 | the special note codes because sometimes the source line | |
621 | actually can be zero! This happens (for example) when we | |
622 | are generating code for the per-translation-unit constructor | |
623 | and destructor routines for some C++ translation unit. | |
624 | ||
625 | If you should change any of the following values, or if you | |
626 | should add a new value here, don't forget to change the | |
627 | note_insn_name array in rtl.c. */ | |
6f29feb1 | 628 | |
d636c18c RH |
629 | enum insn_note |
630 | { | |
631 | /* Keep all of these numbers negative. Adjust as needed. */ | |
632 | NOTE_INSN_BIAS = -100, | |
633 | ||
634 | /* This note is used to get rid of an insn | |
635 | when it isn't safe to patch the insn out of the chain. */ | |
636 | NOTE_INSN_DELETED, | |
637 | ||
638 | /* These are used to mark the beginning and end of a lexical block. | |
639 | See NOTE_BLOCK, identify_blocks and reorder_blocks. */ | |
640 | NOTE_INSN_BLOCK_BEG, | |
641 | NOTE_INSN_BLOCK_END, | |
642 | ||
643 | /* These mark the extremes of a loop. */ | |
644 | NOTE_INSN_LOOP_BEG, | |
645 | NOTE_INSN_LOOP_END, | |
646 | ||
647 | /* Generated at the place in a loop that `continue' jumps to. */ | |
648 | NOTE_INSN_LOOP_CONT, | |
649 | /* Generated at the start of a duplicated exit test. */ | |
650 | NOTE_INSN_LOOP_VTOP, | |
651 | ||
652 | /* This kind of note is generated at the end of the function body, | |
653 | just before the return insn or return label. In an optimizing | |
654 | compilation it is deleted by the first jump optimization, after | |
655 | enabling that optimizer to determine whether control can fall | |
656 | off the end of the function body without a return statement. */ | |
657 | NOTE_INSN_FUNCTION_END, | |
658 | ||
659 | /* This kind of note is generated just after each call to `setjmp', | |
660 | and similar functions that can return twice. */ | |
661 | NOTE_INSN_SETJMP, | |
662 | ||
663 | /* This marks the point immediately after the last prologue insn. */ | |
664 | NOTE_INSN_PROLOGUE_END, | |
665 | ||
666 | /* This marks the point immediately prior to the first epilogue insn. */ | |
667 | NOTE_INSN_EPILOGUE_BEG, | |
668 | ||
669 | /* Generated in place of user-declared labels when they are deleted. */ | |
670 | NOTE_INSN_DELETED_LABEL, | |
671 | ||
672 | /* This note indicates the start of the real body of the function, | |
673 | i.e. the point just after all of the parms have been moved into | |
674 | their homes, etc. */ | |
675 | NOTE_INSN_FUNCTION_BEG, | |
676 | ||
677 | /* These note where exception handling regions begin and end. | |
678 | Uses NOTE_EH_HANDLER to identify the region in question. */ | |
679 | NOTE_INSN_EH_REGION_BEG, | |
680 | NOTE_INSN_EH_REGION_END, | |
681 | ||
682 | /* Generated whenever a duplicate line number note is output. For example, | |
683 | one is output after the end of an inline function, in order to prevent | |
684 | the line containing the inline call from being counted twice in gcov. */ | |
b3b42a4d | 685 | NOTE_INSN_REPEATED_LINE_NUMBER, |
d636c18c RH |
686 | |
687 | /* Start/end of a live range region, where pseudos allocated on the stack | |
688 | can be allocated to temporary registers. Uses NOTE_RANGE_INFO. */ | |
b3b42a4d | 689 | NOTE_INSN_RANGE_BEG, |
d636c18c RH |
690 | NOTE_INSN_RANGE_END, |
691 | ||
692 | /* Record which registers are currently live. Uses NOTE_LIVE_INFO. */ | |
693 | NOTE_INSN_LIVE, | |
694 | ||
695 | /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */ | |
696 | NOTE_INSN_BASIC_BLOCK, | |
697 | ||
994a57cd RH |
698 | /* Record the expected value of a register at a location. Uses |
699 | NOTE_EXPECTED_VALUE; stored as (eq (reg) (const_int)). */ | |
700 | NOTE_INSN_EXPECTED_VALUE, | |
701 | ||
d636c18c RH |
702 | NOTE_INSN_MAX |
703 | }; | |
10f07067 | 704 | |
6f29feb1 JW |
705 | /* Names for NOTE insn's other than line numbers. */ |
706 | ||
d636c18c RH |
707 | extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; |
708 | #define GET_NOTE_INSN_NAME(NOTE_CODE) \ | |
dbbbbf3b | 709 | (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS]) |
6f29feb1 JW |
710 | |
711 | /* The name of a label, in case it corresponds to an explicit label | |
712 | in the input source code. */ | |
be1bb652 | 713 | #define LABEL_NAME(RTX) XCSTR(RTX, 6, CODE_LABEL) |
6f29feb1 JW |
714 | |
715 | /* In jump.c, each label contains a count of the number | |
716 | of LABEL_REFs that point at it, so unused labels can be deleted. */ | |
be1bb652 | 717 | #define LABEL_NUSES(RTX) XCINT(RTX, 3, CODE_LABEL) |
6f29feb1 | 718 | |
8cd0faaf CM |
719 | /* Associate a name with a CODE_LABEL. */ |
720 | #define LABEL_ALTERNATE_NAME(RTX) XCSTR(RTX, 7, CODE_LABEL) | |
721 | ||
e9a25f70 | 722 | /* The original regno this ADDRESSOF was built for. */ |
770ae6cc | 723 | #define ADDRESSOF_REGNO(RTX) XCUINT(RTX, 1, ADDRESSOF) |
e9a25f70 JL |
724 | |
725 | /* The variable in the register we took the address of. */ | |
83ab3839 | 726 | #define ADDRESSOF_DECL(RTX) XCTREE(RTX, 2, ADDRESSOF) |
e9a25f70 | 727 | |
6f29feb1 JW |
728 | /* In jump.c, each JUMP_INSN can point to a label that it can jump to, |
729 | so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can | |
730 | be decremented and possibly the label can be deleted. */ | |
83ab3839 | 731 | #define JUMP_LABEL(INSN) XCEXP(INSN, 7, JUMP_INSN) |
6f29feb1 JW |
732 | |
733 | /* Once basic blocks are found in flow.c, | |
734 | each CODE_LABEL starts a chain that goes through | |
735 | all the LABEL_REFs that jump to that label. | |
be1bb652 RH |
736 | The chain eventually winds up at the CODE_LABEL: it is circular. */ |
737 | #define LABEL_REFS(LABEL) XCEXP(LABEL, 4, CODE_LABEL) | |
6f29feb1 JW |
738 | \f |
739 | /* This is the field in the LABEL_REF through which the circular chain | |
740 | of references to a particular label is linked. | |
741 | This chain is set up in flow.c. */ | |
742 | ||
83ab3839 | 743 | #define LABEL_NEXTREF(REF) XCEXP(REF, 1, LABEL_REF) |
6f29feb1 JW |
744 | |
745 | /* Once basic blocks are found in flow.c, | |
746 | Each LABEL_REF points to its containing instruction with this field. */ | |
747 | ||
83ab3839 | 748 | #define CONTAINING_INSN(RTX) XCEXP(RTX, 2, LABEL_REF) |
6f29feb1 | 749 | |
08394eef BS |
750 | /* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds |
751 | the number the register originally had; for a pseudo register turned into | |
752 | a hard reg this will hold the old pseudo register number. */ | |
6f29feb1 | 753 | |
770ae6cc | 754 | #define REGNO(RTX) XCUINT(RTX, 0, REG) |
08394eef | 755 | #define ORIGINAL_REGNO(RTX) X0UINT(RTX, 1) |
6f29feb1 JW |
756 | |
757 | /* For a REG rtx, REG_FUNCTION_VALUE_P is nonzero if the reg | |
758 | is the current function's return value. */ | |
759 | ||
760 | #define REG_FUNCTION_VALUE_P(RTX) ((RTX)->integrated) | |
761 | ||
762 | /* 1 in a REG rtx if it corresponds to a variable declared by the user. */ | |
763 | #define REG_USERVAR_P(RTX) ((RTX)->volatil) | |
764 | ||
3502dc9c JDA |
765 | /* 1 in a REG rtx if the register is a pointer. */ |
766 | #define REG_POINTER(RTX) ((RTX)->frame_related) | |
767 | ||
cdbca172 JO |
768 | /* 1 if the given register REG corresponds to a hard register. */ |
769 | #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) | |
770 | ||
771 | /* 1 if the given register number REG_NO corresponds to a hard register. */ | |
772 | #define HARD_REGISTER_NUM_P(REG_NO) (REG_NO < FIRST_PSEUDO_REGISTER) | |
773 | ||
6f29feb1 JW |
774 | /* For a CONST_INT rtx, INTVAL extracts the integer. */ |
775 | ||
83ab3839 | 776 | #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) |
6f29feb1 | 777 | |
a36556a8 ZW |
778 | /* For a CONST_DOUBLE: |
779 | The usual two ints that hold the value. | |
780 | For a DImode, that is all there are; | |
781 | and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order. | |
782 | For a float, the number of ints varies, | |
783 | and CONST_DOUBLE_LOW is the one that should come first *in memory*. | |
784 | So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */ | |
785 | #define CONST_DOUBLE_LOW(r) XCWINT (r, 2, CONST_DOUBLE) | |
786 | #define CONST_DOUBLE_HIGH(r) XCWINT (r, 3, CONST_DOUBLE) | |
787 | ||
788 | /* Link for chain of all CONST_DOUBLEs in use in current function. */ | |
789 | #define CONST_DOUBLE_CHAIN(r) XCEXP (r, 1, CONST_DOUBLE) | |
790 | /* The MEM which represents this CONST_DOUBLE's value in memory, | |
791 | or const0_rtx if no MEM has been made for it yet, | |
792 | or cc0_rtx if it is not on the chain. */ | |
793 | #define CONST_DOUBLE_MEM(r) XCEXP (r, 0, CONST_DOUBLE) | |
794 | ||
6f29feb1 | 795 | /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. |
ddef6bc7 | 796 | SUBREG_BYTE extracts the byte-number. */ |
6f29feb1 | 797 | |
83ab3839 | 798 | #define SUBREG_REG(RTX) XCEXP(RTX, 0, SUBREG) |
ddef6bc7 JJ |
799 | #define SUBREG_BYTE(RTX) XCUINT(RTX, 1, SUBREG) |
800 | ||
801 | /* in rtlanal.c */ | |
802 | extern unsigned int subreg_regno_offset PARAMS ((unsigned int, | |
803 | enum machine_mode, | |
804 | unsigned int, | |
805 | enum machine_mode)); | |
806 | extern unsigned int subreg_regno PARAMS ((rtx)); | |
6f29feb1 | 807 | |
07be3989 RK |
808 | /* 1 if the REG contained in SUBREG_REG is already known to be |
809 | sign- or zero-extended from the mode of the SUBREG to the mode of | |
810 | the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the | |
f590cca1 | 811 | extension. |
07be3989 RK |
812 | |
813 | When used as a LHS, is means that this extension must be done | |
814 | when assigning to SUBREG_REG. */ | |
815 | ||
816 | #define SUBREG_PROMOTED_VAR_P(RTX) ((RTX)->in_struct) | |
817 | #define SUBREG_PROMOTED_UNSIGNED_P(RTX) ((RTX)->unchanging) | |
818 | ||
6f29feb1 JW |
819 | /* Access various components of an ASM_OPERANDS rtx. */ |
820 | ||
83ab3839 RH |
821 | #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR ((RTX), 0, ASM_OPERANDS) |
822 | #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR ((RTX), 1, ASM_OPERANDS) | |
823 | #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT ((RTX), 2, ASM_OPERANDS) | |
824 | #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC ((RTX), 3, ASM_OPERANDS) | |
825 | #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC ((RTX), 4, ASM_OPERANDS) | |
826 | #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP ((RTX), 3, (N), ASM_OPERANDS) | |
827 | #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN ((RTX), 3, ASM_OPERANDS) | |
6462bb43 AO |
828 | #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ |
829 | XCVECEXP ((RTX), 4, (N), ASM_OPERANDS) | |
3bdf5ad1 RK |
830 | #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ |
831 | XSTR (XCVECEXP ((RTX), 4, (N), ASM_OPERANDS), 0) | |
832 | #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ | |
833 | GET_MODE (XCVECEXP ((RTX), 4, (N), ASM_OPERANDS)) | |
83ab3839 RH |
834 | #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR ((RTX), 5, ASM_OPERANDS) |
835 | #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT ((RTX), 6, ASM_OPERANDS) | |
6f29feb1 JW |
836 | |
837 | /* For a MEM rtx, 1 if it's a volatile reference. | |
838 | Also in an ASM_OPERANDS rtx. */ | |
839 | #define MEM_VOLATILE_P(RTX) ((RTX)->volatil) | |
840 | ||
3bdf5ad1 RK |
841 | /* For a MEM rtx, 1 if it refers to an aggregate, either to the |
842 | aggregate itself of to a field of the aggregate. If zero, RTX may | |
4eb00163 | 843 | or may not be such a reference. */ |
6f29feb1 JW |
844 | #define MEM_IN_STRUCT_P(RTX) ((RTX)->in_struct) |
845 | ||
c6df88cb MM |
846 | /* For a MEM rtx, 1 if it refers to a scalar. If zero, RTX may or may |
847 | not refer to a scalar.*/ | |
848 | #define MEM_SCALAR_P(RTX) ((RTX)->frame_related) | |
849 | ||
c6df88cb MM |
850 | /* If VAL is non-zero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in |
851 | RTX. Otherwise, vice versa. Use this macro only when you are | |
852 | *sure* that you know that the MEM is in a structure, or is a | |
853 | scalar. VAL is evaluated only once. */ | |
f9e158c3 JM |
854 | #define MEM_SET_IN_STRUCT_P(RTX, VAL) do { \ |
855 | if (VAL) \ | |
856 | { \ | |
857 | MEM_IN_STRUCT_P (RTX) = 1; \ | |
858 | MEM_SCALAR_P (RTX) = 0; \ | |
859 | } \ | |
860 | else \ | |
861 | { \ | |
862 | MEM_IN_STRUCT_P (RTX) = 0; \ | |
863 | MEM_SCALAR_P (RTX) = 1; \ | |
864 | } \ | |
865 | } while (0) | |
c6df88cb | 866 | |
41472af8 MM |
867 | /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias |
868 | set, and may alias anything. Otherwise, the MEM can only alias | |
869 | MEMs in the same alias set. This value is set in a | |
870 | language-dependent manner in the front-end, and should not be | |
871 | altered in the back-end. These set numbers are tested for zero, | |
872 | and compared for equality; they have no other significance. In | |
873 | some front-ends, these numbers may correspond in some way to types, | |
874 | or other language-level entities, but they need not, and the | |
875 | back-end makes no such assumptions. */ | |
3bdf5ad1 RK |
876 | #define MEM_ALIAS_SET(RTX) XCWINT(RTX, 1, MEM) |
877 | ||
878 | /* Copy the attributes that apply to memory locations from RHS to LHS. */ | |
879 | #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ | |
880 | (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ | |
881 | MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ | |
882 | MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ | |
883 | MEM_ALIAS_SET (LHS) = MEM_ALIAS_SET (RHS), \ | |
884 | RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS)) | |
41472af8 | 885 | |
6f29feb1 JW |
886 | /* For a LABEL_REF, 1 means that this reference is to a label outside the |
887 | loop containing the reference. */ | |
888 | #define LABEL_OUTSIDE_LOOP_P(RTX) ((RTX)->in_struct) | |
889 | ||
adfaf10a | 890 | /* For a LABEL_REF, 1 means it is for a nonlocal label. */ |
2a406d2a | 891 | /* Likewise in an EXPR_LIST for a REG_LABEL note. */ |
adfaf10a RS |
892 | #define LABEL_REF_NONLOCAL_P(RTX) ((RTX)->volatil) |
893 | ||
6f29feb1 JW |
894 | /* For a CODE_LABEL, 1 means always consider this label to be needed. */ |
895 | #define LABEL_PRESERVE_P(RTX) ((RTX)->in_struct) | |
896 | ||
897 | /* For a REG, 1 means the register is used only in an exit test of a loop. */ | |
898 | #define REG_LOOP_TEST_P(RTX) ((RTX)->in_struct) | |
899 | ||
900 | /* During sched, for an insn, 1 means that the insn must be scheduled together | |
d45cf215 | 901 | with the preceding insn. */ |
6f29feb1 JW |
902 | #define SCHED_GROUP_P(INSN) ((INSN)->in_struct) |
903 | ||
c376c05b TW |
904 | /* During sched, for the LOG_LINKS of an insn, these cache the adjusted |
905 | cost of the dependence link. The cost of executing an instruction | |
906 | may vary based on how the results are used. LINK_COST_ZERO is 1 when | |
907 | the cost through the link varies and is unchanged (i.e., the link has | |
908 | zero additional cost). LINK_COST_FREE is 1 when the cost through the | |
909 | link is zero (i.e., the link makes the cost free). In other cases, | |
910 | the adjustment to the cost is recomputed each time it is needed. */ | |
911 | #define LINK_COST_ZERO(X) ((X)->jump) | |
912 | #define LINK_COST_FREE(X) ((X)->call) | |
913 | ||
6f29feb1 JW |
914 | /* For a SET rtx, SET_DEST is the place that is set |
915 | and SET_SRC is the value it is set to. */ | |
83ab3839 RH |
916 | #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) |
917 | #define SET_SRC(RTX) XCEXP(RTX, 1, SET) | |
6f29feb1 JW |
918 | |
919 | /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ | |
83ab3839 RH |
920 | #define TRAP_CONDITION(RTX) XCEXP(RTX, 0, TRAP_IF) |
921 | #define TRAP_CODE(RTX) XCEXP(RTX, 1, TRAP_IF) | |
6f29feb1 | 922 | |
0c99ec5c RH |
923 | /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base |
924 | conditionally executing the code on, COND_EXEC_CODE is the code | |
925 | to execute if the condition is true. */ | |
926 | #define COND_EXEC_TEST(RTX) XCEXP(RTX, 0, COND_EXEC) | |
927 | #define COND_EXEC_CODE(RTX) XCEXP(RTX, 1, COND_EXEC) | |
928 | ||
6f29feb1 JW |
929 | /* 1 in a SYMBOL_REF if it addresses this function's constants pool. */ |
930 | #define CONSTANT_POOL_ADDRESS_P(RTX) ((RTX)->unchanging) | |
931 | ||
bd7cf17e JJ |
932 | /* 1 in a SYMBOL_REF if it addresses this function's string constant pool. */ |
933 | #define STRING_POOL_ADDRESS_P(RTX) ((RTX)->frame_related) | |
934 | ||
6f29feb1 JW |
935 | /* Flag in a SYMBOL_REF for machine-specific purposes. */ |
936 | #define SYMBOL_REF_FLAG(RTX) ((RTX)->volatil) | |
937 | ||
938 | /* 1 means a SYMBOL_REF has been the library function in emit_library_call. */ | |
939 | #define SYMBOL_REF_USED(RTX) ((RTX)->used) | |
940 | ||
ff0b6b99 FS |
941 | /* 1 means a SYMBOL_REF is weak. */ |
942 | #define SYMBOL_REF_WEAK(RTX) ((RTX)->integrated) | |
943 | ||
6f29feb1 JW |
944 | /* Define a macro to look for REG_INC notes, |
945 | but save time on machines where they never exist. */ | |
946 | ||
58e54c44 RS |
947 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
948 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
6f29feb1 JW |
949 | #define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg))) |
950 | #else | |
951 | #define FIND_REG_INC_NOTE(insn, reg) 0 | |
952 | #endif | |
953 | ||
954 | /* Indicate whether the machine has any sort of auto increment addressing. | |
955 | If not, we can avoid checking for REG_INC notes. */ | |
956 | ||
58e54c44 RS |
957 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
958 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
6f29feb1 JW |
959 | #define AUTO_INC_DEC |
960 | #endif | |
0dfa1860 | 961 | |
940da324 JL |
962 | #ifndef HAVE_PRE_INCREMENT |
963 | #define HAVE_PRE_INCREMENT 0 | |
964 | #endif | |
965 | ||
966 | #ifndef HAVE_PRE_DECREMENT | |
967 | #define HAVE_PRE_DECREMENT 0 | |
968 | #endif | |
969 | ||
970 | #ifndef HAVE_POST_INCREMENT | |
971 | #define HAVE_POST_INCREMENT 0 | |
972 | #endif | |
973 | ||
974 | #ifndef HAVE_POST_DECREMENT | |
975 | #define HAVE_POST_DECREMENT 0 | |
976 | #endif | |
977 | ||
4b983fdc RH |
978 | #ifndef HAVE_POST_MODIFY_DISP |
979 | #define HAVE_POST_MODIFY_DISP 0 | |
980 | #endif | |
981 | ||
982 | #ifndef HAVE_POST_MODIFY_REG | |
983 | #define HAVE_POST_MODIFY_REG 0 | |
984 | #endif | |
985 | ||
986 | #ifndef HAVE_PRE_MODIFY_DISP | |
987 | #define HAVE_PRE_MODIFY_DISP 0 | |
988 | #endif | |
989 | ||
990 | #ifndef HAVE_PRE_MODIFY_REG | |
991 | #define HAVE_PRE_MODIFY_REG 0 | |
992 | #endif | |
993 | ||
6e01bd94 MH |
994 | |
995 | /* Some architectures do not have complete pre/post increment/decrement | |
996 | instruction sets, or only move some modes efficiently. These macros | |
997 | allow us to tune autoincrement generation. */ | |
998 | ||
999 | #ifndef USE_LOAD_POST_INCREMENT | |
1000 | #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1001 | #endif | |
1002 | ||
1003 | #ifndef USE_LOAD_POST_DECREMENT | |
1004 | #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1005 | #endif | |
1006 | ||
1007 | #ifndef USE_LOAD_PRE_INCREMENT | |
1008 | #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1009 | #endif | |
1010 | ||
1011 | #ifndef USE_LOAD_PRE_DECREMENT | |
1012 | #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1013 | #endif | |
1014 | ||
1015 | #ifndef USE_STORE_POST_INCREMENT | |
1016 | #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1017 | #endif | |
1018 | ||
1019 | #ifndef USE_STORE_POST_DECREMENT | |
1020 | #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1021 | #endif | |
1022 | ||
1023 | #ifndef USE_STORE_PRE_INCREMENT | |
1024 | #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1025 | #endif | |
1026 | ||
1027 | #ifndef USE_STORE_PRE_DECREMENT | |
1028 | #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1029 | #endif | |
1030 | ||
1031 | ||
0dfa1860 MM |
1032 | /* Accessors for RANGE_INFO. */ |
1033 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 1034 | #define RANGE_INFO_NOTE_START(INSN) XCEXP (INSN, 0, RANGE_INFO) |
0dfa1860 MM |
1035 | |
1036 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 1037 | #define RANGE_INFO_NOTE_END(INSN) XCEXP (INSN, 1, RANGE_INFO) |
0dfa1860 MM |
1038 | |
1039 | /* For RANGE_{START,END} notes, return the vector containing the registers used | |
1040 | in the range. */ | |
83ab3839 RH |
1041 | #define RANGE_INFO_REGS(INSN) XCVEC (INSN, 2, RANGE_INFO) |
1042 | #define RANGE_INFO_REGS_REG(INSN, N) XCVECEXP (INSN, 2, N, RANGE_INFO) | |
1043 | #define RANGE_INFO_NUM_REGS(INSN) XCVECLEN (INSN, 2, RANGE_INFO) | |
0dfa1860 MM |
1044 | |
1045 | /* For RANGE_{START,END} notes, the number of calls within the range. */ | |
83ab3839 | 1046 | #define RANGE_INFO_NCALLS(INSN) XCINT (INSN, 3, RANGE_INFO) |
0dfa1860 MM |
1047 | |
1048 | /* For RANGE_{START,END} notes, the number of insns within the range. */ | |
83ab3839 | 1049 | #define RANGE_INFO_NINSNS(INSN) XCINT (INSN, 4, RANGE_INFO) |
0dfa1860 MM |
1050 | |
1051 | /* For RANGE_{START,END} notes, a unique # to identify this range. */ | |
83ab3839 | 1052 | #define RANGE_INFO_UNIQUE(INSN) XCINT (INSN, 5, RANGE_INFO) |
0dfa1860 MM |
1053 | |
1054 | /* For RANGE_{START,END} notes, the basic block # the range starts with. */ | |
83ab3839 | 1055 | #define RANGE_INFO_BB_START(INSN) XCINT (INSN, 6, RANGE_INFO) |
0dfa1860 MM |
1056 | |
1057 | /* For RANGE_{START,END} notes, the basic block # the range ends with. */ | |
83ab3839 | 1058 | #define RANGE_INFO_BB_END(INSN) XCINT (INSN, 7, RANGE_INFO) |
0dfa1860 MM |
1059 | |
1060 | /* For RANGE_{START,END} notes, the loop depth the range is in. */ | |
83ab3839 | 1061 | #define RANGE_INFO_LOOP_DEPTH(INSN) XCINT (INSN, 8, RANGE_INFO) |
0dfa1860 MM |
1062 | |
1063 | /* For RANGE_{START,END} notes, the bitmap of live registers at the start | |
1064 | of the range. */ | |
83ab3839 | 1065 | #define RANGE_INFO_LIVE_START(INSN) XCBITMAP (INSN, 9, RANGE_INFO) |
0dfa1860 MM |
1066 | |
1067 | /* For RANGE_{START,END} notes, the bitmap of live registers at the end | |
1068 | of the range. */ | |
83ab3839 | 1069 | #define RANGE_INFO_LIVE_END(INSN) XCBITMAP (INSN, 10, RANGE_INFO) |
0dfa1860 MM |
1070 | |
1071 | /* For RANGE_START notes, the marker # of the start of the range. */ | |
83ab3839 | 1072 | #define RANGE_INFO_MARKER_START(INSN) XCINT (INSN, 11, RANGE_INFO) |
0dfa1860 MM |
1073 | |
1074 | /* For RANGE_START notes, the marker # of the end of the range. */ | |
83ab3839 | 1075 | #define RANGE_INFO_MARKER_END(INSN) XCINT (INSN, 12, RANGE_INFO) |
0dfa1860 MM |
1076 | |
1077 | /* Original pseudo register # for a live range note. */ | |
83ab3839 | 1078 | #define RANGE_REG_PSEUDO(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 0, REG) |
0dfa1860 MM |
1079 | |
1080 | /* Pseudo register # original register is copied into or -1. */ | |
83ab3839 | 1081 | #define RANGE_REG_COPY(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 1, REG) |
0dfa1860 MM |
1082 | |
1083 | /* How many times a register in a live range note was referenced. */ | |
83ab3839 | 1084 | #define RANGE_REG_REFS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 2) |
0dfa1860 MM |
1085 | |
1086 | /* How many times a register in a live range note was set. */ | |
83ab3839 | 1087 | #define RANGE_REG_SETS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 3) |
0dfa1860 MM |
1088 | |
1089 | /* How many times a register in a live range note died. */ | |
83ab3839 | 1090 | #define RANGE_REG_DEATHS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 4) |
0dfa1860 MM |
1091 | |
1092 | /* Whether the original value is needed to be copied into the range register at | |
1093 | the start of the range. */ | |
83ab3839 | 1094 | #define RANGE_REG_COPY_FLAGS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 5) |
0dfa1860 MM |
1095 | |
1096 | /* # of insns the register copy is live over. */ | |
83ab3839 | 1097 | #define RANGE_REG_LIVE_LENGTH(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 6) |
0dfa1860 MM |
1098 | |
1099 | /* # of calls the register copy is live over. */ | |
83ab3839 | 1100 | #define RANGE_REG_N_CALLS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 7) |
0dfa1860 MM |
1101 | |
1102 | /* DECL_NODE pointer of the declaration if the register is a user defined | |
1103 | variable. */ | |
83ab3839 | 1104 | #define RANGE_REG_SYMBOL_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 8) |
0dfa1860 MM |
1105 | |
1106 | /* BLOCK_NODE pointer to the block the variable is declared in if the | |
1107 | register is a user defined variable. */ | |
83ab3839 | 1108 | #define RANGE_REG_BLOCK_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 9) |
0dfa1860 MM |
1109 | |
1110 | /* EXPR_LIST of the distinct ranges a variable is in. */ | |
1111 | #define RANGE_VAR_LIST(INSN) (XEXP (INSN, 0)) | |
1112 | ||
1113 | /* Block a variable is declared in. */ | |
1114 | #define RANGE_VAR_BLOCK(INSN) (XTREE (INSN, 1)) | |
1115 | ||
1116 | /* # of distinct ranges a variable is in. */ | |
1117 | #define RANGE_VAR_NUM(INSN) (XINT (INSN, 2)) | |
1118 | ||
1119 | /* For a NOTE_INSN_LIVE note, the registers which are currently live. */ | |
1120 | #define RANGE_LIVE_BITMAP(INSN) (XBITMAP (INSN, 0)) | |
1121 | ||
1122 | /* For a NOTE_INSN_LIVE note, the original basic block number. */ | |
1123 | #define RANGE_LIVE_ORIG_BLOCK(INSN) (XINT (INSN, 1)) | |
4e872036 AS |
1124 | |
1125 | /* Determine if the insn is a PHI node. */ | |
1126 | #define PHI_NODE_P(X) \ | |
1127 | (X && GET_CODE (X) == INSN \ | |
1128 | && GET_CODE (PATTERN (X)) == SET \ | |
1129 | && GET_CODE (SET_SRC (PATTERN (X))) == PHI) | |
6f29feb1 | 1130 | \f |
bf6bb899 BS |
1131 | /* Nonzero if we need to distinguish between the return value of this function |
1132 | and the return value of a function called by this function. This helps | |
1133 | integrate.c. | |
1134 | This is 1 until after the rtl generation pass. */ | |
1135 | extern int rtx_equal_function_value_matters; | |
1136 | ||
1b3d8f8a GK |
1137 | /* Nonzero when we are generating CONCATs. */ |
1138 | extern int generating_concat_p; | |
1139 | ||
6f29feb1 JW |
1140 | /* Generally useful functions. */ |
1141 | ||
ac957f13 | 1142 | /* In expmed.c */ |
cdadb1dd | 1143 | extern int ceil_log2 PARAMS ((unsigned HOST_WIDE_INT)); |
5f4f0e22 CH |
1144 | |
1145 | #define plus_constant(X,C) plus_constant_wide (X, (HOST_WIDE_INT) (C)) | |
1146 | ||
5f2d6cfa MM |
1147 | /* In builtins.c */ |
1148 | extern rtx expand_builtin_expect_jump PARAMS ((union tree_node *, rtx, rtx)); | |
1149 | ||
50b2596f | 1150 | /* In explow.c */ |
c6991660 | 1151 | extern void set_stack_check_libfunc PARAMS ((rtx)); |
cdadb1dd | 1152 | extern HOST_WIDE_INT trunc_int_for_mode PARAMS ((HOST_WIDE_INT, |
7e4ce834 | 1153 | enum machine_mode)); |
cdadb1dd KG |
1154 | extern rtx plus_constant_wide PARAMS ((rtx, HOST_WIDE_INT)); |
1155 | extern rtx plus_constant_for_output_wide PARAMS ((rtx, HOST_WIDE_INT)); | |
1156 | extern void optimize_save_area_alloca PARAMS ((rtx)); | |
5f4f0e22 | 1157 | |
4eb00163 | 1158 | /* In emit-rtl.c */ |
cdadb1dd | 1159 | extern rtx gen_rtx PARAMS ((enum rtx_code, |
bdea67fa | 1160 | enum machine_mode, ...)); |
cdadb1dd KG |
1161 | extern rtvec gen_rtvec PARAMS ((int, ...)); |
1162 | ||
4eb00163 | 1163 | /* In other files */ |
cdadb1dd KG |
1164 | extern rtx rtx_alloc PARAMS ((RTX_CODE)); |
1165 | extern rtvec rtvec_alloc PARAMS ((int)); | |
1166 | extern rtx copy_insn_1 PARAMS ((rtx)); | |
1167 | extern rtx copy_insn PARAMS ((rtx)); | |
4eb00163 JO |
1168 | |
1169 | /* In rtl.c */ | |
cdadb1dd | 1170 | extern rtx copy_rtx PARAMS ((rtx)); |
4eb00163 JO |
1171 | |
1172 | /* In emit-rtl.c */ | |
cdadb1dd | 1173 | extern rtx copy_rtx_if_shared PARAMS ((rtx)); |
4eb00163 JO |
1174 | |
1175 | /* In rtl.c */ | |
cdadb1dd KG |
1176 | extern rtx copy_most_rtx PARAMS ((rtx, rtx)); |
1177 | extern rtx shallow_copy_rtx PARAMS ((rtx)); | |
1178 | extern int rtx_equal_p PARAMS ((rtx, rtx)); | |
4eb00163 JO |
1179 | |
1180 | /* In emit-rtl.c */ | |
cdadb1dd KG |
1181 | extern rtvec gen_rtvec_v PARAMS ((int, rtx *)); |
1182 | extern rtx gen_reg_rtx PARAMS ((enum machine_mode)); | |
1183 | extern rtx gen_label_rtx PARAMS ((void)); | |
ddef6bc7 | 1184 | extern int subreg_hard_regno PARAMS ((rtx, int)); |
cdadb1dd KG |
1185 | extern rtx gen_lowpart_common PARAMS ((enum machine_mode, rtx)); |
1186 | extern rtx gen_lowpart PARAMS ((enum machine_mode, rtx)); | |
4eb00163 JO |
1187 | |
1188 | /* In cse.c */ | |
cdadb1dd | 1189 | extern rtx gen_lowpart_if_possible PARAMS ((enum machine_mode, rtx)); |
4eb00163 JO |
1190 | |
1191 | /* In emit-rtl.c */ | |
cdadb1dd | 1192 | extern rtx gen_highpart PARAMS ((enum machine_mode, rtx)); |
5222e470 JH |
1193 | extern rtx gen_highpart_mode PARAMS ((enum machine_mode, |
1194 | enum machine_mode, rtx)); | |
cdadb1dd KG |
1195 | extern rtx gen_realpart PARAMS ((enum machine_mode, rtx)); |
1196 | extern rtx gen_imagpart PARAMS ((enum machine_mode, rtx)); | |
770ae6cc RK |
1197 | extern rtx operand_subword PARAMS ((rtx, unsigned int, int, |
1198 | enum machine_mode)); | |
ddef6bc7 JJ |
1199 | extern rtx constant_subword PARAMS ((rtx, int, |
1200 | enum machine_mode)); | |
4eb00163 JO |
1201 | |
1202 | /* In emit-rtl.c */ | |
770ae6cc RK |
1203 | extern rtx operand_subword_force PARAMS ((rtx, unsigned int, |
1204 | enum machine_mode)); | |
cdadb1dd | 1205 | extern int subreg_lowpart_p PARAMS ((rtx)); |
e0e08ac2 JH |
1206 | extern unsigned int subreg_lowpart_offset PARAMS ((enum machine_mode, |
1207 | enum machine_mode)); | |
1208 | extern unsigned int subreg_highpart_offset PARAMS ((enum machine_mode, | |
1209 | enum machine_mode)); | |
cdadb1dd KG |
1210 | extern rtx make_safe_from PARAMS ((rtx, rtx)); |
1211 | extern rtx convert_memory_address PARAMS ((enum machine_mode, rtx)); | |
cdadb1dd KG |
1212 | extern rtx get_insns PARAMS ((void)); |
1213 | extern const char *get_insn_name PARAMS ((int)); | |
1214 | extern rtx get_last_insn PARAMS ((void)); | |
1215 | extern rtx get_last_insn_anywhere PARAMS ((void)); | |
1216 | extern void start_sequence PARAMS ((void)); | |
1217 | extern void push_to_sequence PARAMS ((rtx)); | |
1218 | extern void end_sequence PARAMS ((void)); | |
c14f7160 ML |
1219 | extern void push_to_full_sequence PARAMS ((rtx, rtx)); |
1220 | extern void end_full_sequence PARAMS ((rtx*, rtx*)); | |
cdadb1dd | 1221 | extern rtx gen_sequence PARAMS ((void)); |
4eb00163 JO |
1222 | |
1223 | /* In varasm.c */ | |
cdadb1dd KG |
1224 | extern rtx immed_double_const PARAMS ((HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode)); |
1225 | extern rtx force_const_mem PARAMS ((enum machine_mode, rtx)); | |
4eb00163 | 1226 | |
4eb00163 | 1227 | /* In varasm.c */ |
cdadb1dd KG |
1228 | extern rtx get_pool_constant PARAMS ((rtx)); |
1229 | extern enum machine_mode get_pool_mode PARAMS ((rtx)); | |
1230 | extern rtx get_pool_constant_for_function PARAMS ((struct function *, rtx)); | |
1231 | extern enum machine_mode get_pool_mode_for_function PARAMS ((struct function *, rtx)); | |
1232 | extern int get_pool_offset PARAMS ((rtx)); | |
1233 | extern rtx simplify_subtraction PARAMS ((rtx)); | |
4eb00163 JO |
1234 | |
1235 | /* In function.c */ | |
cdadb1dd | 1236 | extern rtx assign_stack_local PARAMS ((enum machine_mode, |
e5e809f4 | 1237 | HOST_WIDE_INT, int)); |
cdadb1dd | 1238 | extern rtx assign_stack_temp PARAMS ((enum machine_mode, |
e5e809f4 | 1239 | HOST_WIDE_INT, int)); |
cdadb1dd | 1240 | extern rtx assign_temp PARAMS ((union tree_node *, |
e5e809f4 | 1241 | int, int, int)); |
4eb00163 | 1242 | /* In emit-rtl.c */ |
cdadb1dd KG |
1243 | extern rtx emit_insn_before PARAMS ((rtx, rtx)); |
1244 | extern rtx emit_jump_insn_before PARAMS ((rtx, rtx)); | |
1245 | extern rtx emit_call_insn_before PARAMS ((rtx, rtx)); | |
1246 | extern rtx emit_barrier_before PARAMS ((rtx)); | |
1247 | extern rtx emit_label_before PARAMS ((rtx, rtx)); | |
1248 | extern rtx emit_note_before PARAMS ((int, rtx)); | |
1249 | extern rtx emit_insn_after PARAMS ((rtx, rtx)); | |
1250 | extern rtx emit_jump_insn_after PARAMS ((rtx, rtx)); | |
1251 | extern rtx emit_barrier_after PARAMS ((rtx)); | |
1252 | extern rtx emit_label_after PARAMS ((rtx, rtx)); | |
1253 | extern rtx emit_note_after PARAMS ((int, rtx)); | |
3cce094d | 1254 | extern rtx emit_line_note_after PARAMS ((const char *, int, rtx)); |
cdadb1dd KG |
1255 | extern rtx emit_insn PARAMS ((rtx)); |
1256 | extern rtx emit_insns PARAMS ((rtx)); | |
1257 | extern rtx emit_insns_before PARAMS ((rtx, rtx)); | |
1258 | extern rtx emit_insns_after PARAMS ((rtx, rtx)); | |
1259 | extern rtx emit_jump_insn PARAMS ((rtx)); | |
1260 | extern rtx emit_call_insn PARAMS ((rtx)); | |
1261 | extern rtx emit_label PARAMS ((rtx)); | |
1262 | extern rtx emit_barrier PARAMS ((void)); | |
3cce094d KG |
1263 | extern rtx emit_line_note PARAMS ((const char *, int)); |
1264 | extern rtx emit_note PARAMS ((const char *, int)); | |
1265 | extern rtx emit_line_note_force PARAMS ((const char *, int)); | |
cdadb1dd KG |
1266 | extern rtx make_insn_raw PARAMS ((rtx)); |
1267 | extern rtx previous_insn PARAMS ((rtx)); | |
1268 | extern rtx next_insn PARAMS ((rtx)); | |
1269 | extern rtx prev_nonnote_insn PARAMS ((rtx)); | |
1270 | extern rtx next_nonnote_insn PARAMS ((rtx)); | |
1271 | extern rtx prev_real_insn PARAMS ((rtx)); | |
1272 | extern rtx next_real_insn PARAMS ((rtx)); | |
1273 | extern rtx prev_active_insn PARAMS ((rtx)); | |
1274 | extern rtx next_active_insn PARAMS ((rtx)); | |
69732dcb | 1275 | extern int active_insn_p PARAMS ((rtx)); |
cdadb1dd KG |
1276 | extern rtx prev_label PARAMS ((rtx)); |
1277 | extern rtx next_label PARAMS ((rtx)); | |
1278 | extern rtx next_cc0_user PARAMS ((rtx)); | |
1279 | extern rtx prev_cc0_setter PARAMS ((rtx)); | |
4eb00163 JO |
1280 | |
1281 | /* In jump.c */ | |
cdadb1dd KG |
1282 | extern rtx next_nondeleted_insn PARAMS ((rtx)); |
1283 | extern enum rtx_code reverse_condition PARAMS ((enum rtx_code)); | |
7913f3d0 | 1284 | extern enum rtx_code reverse_condition_maybe_unordered PARAMS ((enum rtx_code)); |
cdadb1dd KG |
1285 | extern enum rtx_code swap_condition PARAMS ((enum rtx_code)); |
1286 | extern enum rtx_code unsigned_condition PARAMS ((enum rtx_code)); | |
1287 | extern enum rtx_code signed_condition PARAMS ((enum rtx_code)); | |
1e5fd094 | 1288 | extern void mark_jump_label PARAMS ((rtx, rtx, int)); |
4eb00163 | 1289 | |
4eb00163 | 1290 | /* In jump.c */ |
cdadb1dd KG |
1291 | extern rtx squeeze_notes PARAMS ((rtx, rtx)); |
1292 | extern rtx delete_insn PARAMS ((rtx)); | |
1293 | extern void delete_jump PARAMS ((rtx)); | |
1294 | extern void delete_barrier PARAMS ((rtx)); | |
1295 | extern rtx get_label_before PARAMS ((rtx)); | |
1296 | extern rtx get_label_after PARAMS ((rtx)); | |
1297 | extern rtx follow_jumps PARAMS ((rtx)); | |
4eb00163 JO |
1298 | |
1299 | /* In recog.c */ | |
b72f00af | 1300 | extern rtx *find_constant_term_loc PARAMS ((rtx *)); |
4eb00163 JO |
1301 | |
1302 | /* In emit-rtl.c */ | |
cdadb1dd | 1303 | extern rtx try_split PARAMS ((rtx, rtx, int)); |
4eb00163 JO |
1304 | |
1305 | /* In unknown file */ | |
cdadb1dd | 1306 | extern rtx split_insns PARAMS ((rtx, rtx)); |
4eb00163 JO |
1307 | |
1308 | /* In simplify-rtx.c */ | |
d9c695ff RK |
1309 | extern rtx simplify_unary_operation PARAMS ((enum rtx_code, |
1310 | enum machine_mode, rtx, | |
1311 | enum machine_mode)); | |
1312 | extern rtx simplify_binary_operation PARAMS ((enum rtx_code, | |
1313 | enum machine_mode, rtx, | |
1314 | rtx)); | |
1315 | extern rtx simplify_ternary_operation PARAMS ((enum rtx_code, | |
1316 | enum machine_mode, | |
1317 | enum machine_mode, rtx, rtx, | |
1318 | rtx)); | |
1319 | extern rtx simplify_relational_operation PARAMS ((enum rtx_code, | |
1320 | enum machine_mode, rtx, | |
1321 | rtx)); | |
1322 | extern rtx simplify_gen_binary PARAMS ((enum rtx_code, | |
1323 | enum machine_mode, | |
1324 | rtx, rtx)); | |
1325 | extern rtx simplify_gen_unary PARAMS ((enum rtx_code, | |
1326 | enum machine_mode, rtx, | |
1327 | enum machine_mode)); | |
1328 | extern rtx simplify_gen_ternary PARAMS ((enum rtx_code, | |
1329 | enum machine_mode, | |
1330 | enum machine_mode, | |
1331 | rtx, rtx, rtx)); | |
1332 | extern rtx simplify_gen_relational PARAMS ((enum rtx_code, | |
141e454b | 1333 | enum machine_mode, |
d9c695ff RK |
1334 | enum machine_mode, |
1335 | rtx, rtx)); | |
eea50aa0 JH |
1336 | extern rtx simplify_subreg PARAMS ((enum machine_mode, |
1337 | rtx, | |
1338 | enum machine_mode, | |
1339 | unsigned int)); | |
949c5d62 JH |
1340 | extern rtx simplify_gen_subreg PARAMS ((enum machine_mode, |
1341 | rtx, | |
1342 | enum machine_mode, | |
1343 | unsigned int)); | |
d9c695ff | 1344 | extern rtx simplify_replace_rtx PARAMS ((rtx, rtx, rtx)); |
cdadb1dd | 1345 | extern rtx simplify_rtx PARAMS ((rtx)); |
4eb00163 | 1346 | |
4eb00163 | 1347 | /* In function.c */ |
cdadb1dd | 1348 | extern rtx gen_mem_addressof PARAMS ((rtx, union tree_node *)); |
4eb00163 | 1349 | |
4eb00163 | 1350 | /* In regclass.c */ |
770ae6cc RK |
1351 | extern enum machine_mode choose_hard_reg_mode PARAMS ((unsigned int, |
1352 | unsigned int)); | |
4eb00163 JO |
1353 | |
1354 | /* In emit-rtl.c */ | |
cdadb1dd | 1355 | extern void set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx)); |
9ae8ffe7 | 1356 | |
e9a25f70 JL |
1357 | /* Functions in rtlanal.c */ |
1358 | ||
b1cdafbb JH |
1359 | /* Single set is implemented as macro for performance reasons. */ |
1360 | #define single_set(I) (INSN_P (I) \ | |
1361 | ? (GET_CODE (PATTERN (I)) == SET \ | |
1362 | ? PATTERN (I) : single_set_1 (I)) \ | |
1363 | : NULL_RTX) | |
2130b7fb | 1364 | #define single_set_1(I) single_set_2 (I, PATTERN (I)) |
b1cdafbb | 1365 | |
e38fe8e0 | 1366 | extern int rtx_addr_can_trap_p PARAMS ((rtx)); |
cdadb1dd | 1367 | extern int rtx_unstable_p PARAMS ((rtx)); |
e38fe8e0 BS |
1368 | extern int rtx_varies_p PARAMS ((rtx, int)); |
1369 | extern int rtx_addr_varies_p PARAMS ((rtx, int)); | |
cdadb1dd KG |
1370 | extern HOST_WIDE_INT get_integer_term PARAMS ((rtx)); |
1371 | extern rtx get_related_value PARAMS ((rtx)); | |
1372 | extern int reg_mentioned_p PARAMS ((rtx, rtx)); | |
4b983fdc | 1373 | extern int count_occurrences PARAMS ((rtx, rtx, int)); |
cdadb1dd KG |
1374 | extern int reg_referenced_p PARAMS ((rtx, rtx)); |
1375 | extern int reg_used_between_p PARAMS ((rtx, rtx, rtx)); | |
1376 | extern int reg_referenced_between_p PARAMS ((rtx, rtx, rtx)); | |
1377 | extern int reg_set_between_p PARAMS ((rtx, rtx, rtx)); | |
1378 | extern int regs_set_between_p PARAMS ((rtx, rtx, rtx)); | |
e5c56fd9 | 1379 | extern int swap_commutative_operands_p PARAMS ((rtx, rtx)); |
cdadb1dd KG |
1380 | extern int modified_between_p PARAMS ((rtx, rtx, rtx)); |
1381 | extern int no_labels_between_p PARAMS ((rtx, rtx)); | |
1382 | extern int no_jumps_between_p PARAMS ((rtx, rtx)); | |
1383 | extern int modified_in_p PARAMS ((rtx, rtx)); | |
4eb00163 | 1384 | extern int insn_dependent_p PARAMS ((rtx, rtx)); |
cdadb1dd | 1385 | extern int reg_set_p PARAMS ((rtx, rtx)); |
2130b7fb | 1386 | extern rtx single_set_2 PARAMS ((rtx, rtx)); |
cdadb1dd | 1387 | extern int multiple_sets PARAMS ((rtx)); |
7142e318 | 1388 | extern int set_noop_p PARAMS ((rtx)); |
cdadb1dd | 1389 | extern rtx find_last_value PARAMS ((rtx, rtx *, rtx, int)); |
770ae6cc RK |
1390 | extern int refers_to_regno_p PARAMS ((unsigned int, unsigned int, |
1391 | rtx, rtx *)); | |
cdadb1dd | 1392 | extern int reg_overlap_mentioned_p PARAMS ((rtx, rtx)); |
91b2d119 | 1393 | extern rtx set_of PARAMS ((rtx, rtx)); |
770ae6cc RK |
1394 | extern void note_stores PARAMS ((rtx, |
1395 | void (*) (rtx, rtx, void *), | |
1396 | void *)); | |
e2373f95 RK |
1397 | extern void note_uses PARAMS ((rtx *, |
1398 | void (*) (rtx *, void *), | |
1399 | void *)); | |
cdadb1dd KG |
1400 | extern rtx reg_set_last PARAMS ((rtx, rtx)); |
1401 | extern int dead_or_set_p PARAMS ((rtx, rtx)); | |
770ae6cc | 1402 | extern int dead_or_set_regno_p PARAMS ((rtx, unsigned int)); |
cdadb1dd | 1403 | extern rtx find_reg_note PARAMS ((rtx, enum reg_note, rtx)); |
770ae6cc RK |
1404 | extern rtx find_regno_note PARAMS ((rtx, enum reg_note, |
1405 | unsigned int)); | |
d9c695ff | 1406 | extern rtx find_reg_equal_equiv_note PARAMS ((rtx)); |
cdadb1dd | 1407 | extern int find_reg_fusage PARAMS ((rtx, enum rtx_code, rtx)); |
770ae6cc RK |
1408 | extern int find_regno_fusage PARAMS ((rtx, enum rtx_code, |
1409 | unsigned int)); | |
cdadb1dd KG |
1410 | extern void remove_note PARAMS ((rtx, rtx)); |
1411 | extern int side_effects_p PARAMS ((rtx)); | |
1412 | extern int volatile_refs_p PARAMS ((rtx)); | |
1413 | extern int volatile_insn_p PARAMS ((rtx)); | |
1414 | extern int may_trap_p PARAMS ((rtx)); | |
1415 | extern int inequality_comparisons_p PARAMS ((rtx)); | |
1416 | extern rtx replace_rtx PARAMS ((rtx, rtx, rtx)); | |
770ae6cc RK |
1417 | extern rtx replace_regs PARAMS ((rtx, rtx *, unsigned int, |
1418 | int)); | |
cdadb1dd KG |
1419 | extern int computed_jump_p PARAMS ((rtx)); |
1420 | typedef int (*rtx_function) PARAMS ((rtx *, void *)); | |
1421 | extern int for_each_rtx PARAMS ((rtx *, rtx_function, void *)); | |
770ae6cc | 1422 | extern rtx regno_use_in PARAMS ((unsigned int, rtx)); |
cdadb1dd KG |
1423 | extern int auto_inc_p PARAMS ((rtx)); |
1424 | extern void remove_node_from_expr_list PARAMS ((rtx, rtx *)); | |
1425 | extern int insns_safe_to_move_p PARAMS ((rtx, rtx, rtx *)); | |
db7ba742 | 1426 | extern int loc_mentioned_in_p PARAMS ((rtx *, rtx)); |
6f29feb1 | 1427 | |
ae0b51ef JL |
1428 | /* flow.c */ |
1429 | ||
cdadb1dd KG |
1430 | extern rtx find_use_as_address PARAMS ((rtx, rtx, HOST_WIDE_INT)); |
1431 | void init_EXPR_INSN_LIST_cache PARAMS ((void)); | |
1432 | void free_EXPR_LIST_list PARAMS ((rtx *)); | |
1433 | void free_INSN_LIST_list PARAMS ((rtx *)); | |
1434 | void free_EXPR_LIST_node PARAMS ((rtx)); | |
1435 | void free_INSN_LIST_node PARAMS ((rtx)); | |
1436 | rtx alloc_INSN_LIST PARAMS ((rtx, rtx)); | |
1437 | rtx alloc_EXPR_LIST PARAMS ((int, rtx, rtx)); | |
d9d4fb43 | 1438 | void clear_log_links PARAMS ((rtx)); |
ae0b51ef JL |
1439 | |
1440 | /* regclass.c */ | |
1441 | ||
6f29feb1 JW |
1442 | /* Maximum number of parallel sets and clobbers in any insn in this fn. |
1443 | Always at least 3, since the combiner could put that many togetherm | |
1444 | and we want this to remain correct for all the remaining passes. */ | |
1445 | ||
1446 | extern int max_parallel; | |
1447 | ||
e0c6d139 | 1448 | /* Free up register info memory. */ |
cdadb1dd | 1449 | extern void free_reg_info PARAMS ((void)); |
e0c6d139 | 1450 | |
ae0b51ef | 1451 | /* recog.c */ |
cdadb1dd | 1452 | extern int asm_noperands PARAMS ((rtx)); |
3cce094d | 1453 | extern const char *decode_asm_operands PARAMS ((rtx, rtx *, rtx **, |
9b3142b3 KG |
1454 | const char **, |
1455 | enum machine_mode *)); | |
6f29feb1 | 1456 | |
cdadb1dd KG |
1457 | extern enum reg_class reg_preferred_class PARAMS ((int)); |
1458 | extern enum reg_class reg_alternate_class PARAMS ((int)); | |
6f29feb1 | 1459 | |
cdadb1dd | 1460 | extern rtx get_first_nonparm_insn PARAMS ((void)); |
6f29feb1 | 1461 | |
cdadb1dd | 1462 | extern void split_all_insns PARAMS ((int)); |
6a73406e | 1463 | |
68d75312 | 1464 | #define MAX_SAVED_CONST_INT 64 |
5da077de | 1465 | extern rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; |
68d75312 | 1466 | |
5da077de AS |
1467 | #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) |
1468 | #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) | |
1469 | #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) | |
1470 | #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) | |
6f29feb1 | 1471 | extern rtx const_true_rtx; |
a8efe40d RK |
1472 | |
1473 | extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; | |
1474 | ||
f590cca1 | 1475 | /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the |
a8efe40d RK |
1476 | same as VOIDmode. */ |
1477 | ||
1478 | #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) | |
1479 | ||
1480 | /* Likewise, for the constants 1 and 2. */ | |
1481 | ||
1482 | #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) | |
1483 | #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) | |
6f29feb1 | 1484 | |
5da077de AS |
1485 | /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg |
1486 | is used to represent the frame pointer. This is because the | |
1487 | hard frame pointer and the automatic variables are separated by an amount | |
1488 | that cannot be determined until after register allocation. We can assume | |
1489 | that in this case ELIMINABLE_REGS will be defined, one action of which | |
1490 | will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ | |
1491 | #ifndef HARD_FRAME_POINTER_REGNUM | |
1492 | #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM | |
1493 | #endif | |
1494 | ||
1495 | /* Index labels for global_rtl. */ | |
1496 | enum global_rtl_index | |
68d75312 | 1497 | { |
5da077de AS |
1498 | GR_PC, |
1499 | GR_CC0, | |
1500 | GR_STACK_POINTER, | |
1501 | GR_FRAME_POINTER, | |
1502 | /* For register elimination to work properly these hard_frame_pointer_rtx, | |
1503 | frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to | |
1504 | the same register. */ | |
1505 | #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1506 | GR_ARG_POINTER = GR_FRAME_POINTER, | |
1507 | #endif | |
1508 | #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM | |
1509 | GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, | |
1510 | #else | |
1511 | GR_HARD_FRAME_POINTER, | |
1512 | #endif | |
1513 | #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM | |
1514 | #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1515 | GR_ARG_POINTER = GR_HARD_FRAME_POINTER, | |
1516 | #else | |
1517 | GR_ARG_POINTER, | |
1518 | #endif | |
1519 | #endif | |
1520 | GR_VIRTUAL_INCOMING_ARGS, | |
1521 | GR_VIRTUAL_STACK_ARGS, | |
1522 | GR_VIRTUAL_STACK_DYNAMIC, | |
1523 | GR_VIRTUAL_OUTGOING_ARGS, | |
1524 | GR_VIRTUAL_CFA, | |
1525 | ||
1526 | GR_MAX | |
1527 | }; | |
1528 | ||
1529 | /* Pointers to standard pieces of rtx are stored here. */ | |
1530 | extern rtx global_rtl[GR_MAX]; | |
1531 | ||
1532 | /* Standard pieces of rtx, to be substituted directly into things. */ | |
1533 | #define pc_rtx (global_rtl[GR_PC]) | |
1534 | #define cc0_rtx (global_rtl[GR_CC0]) | |
68d75312 | 1535 | |
6f29feb1 JW |
1536 | /* All references to certain hard regs, except those created |
1537 | by allocating pseudo regs into them (when that's possible), | |
1538 | go through these unique rtx objects. */ | |
5da077de AS |
1539 | #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) |
1540 | #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) | |
1541 | #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) | |
1542 | #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) | |
68d75312 | 1543 | |
6f29feb1 JW |
1544 | extern rtx pic_offset_table_rtx; |
1545 | extern rtx struct_value_rtx; | |
1546 | extern rtx struct_value_incoming_rtx; | |
1547 | extern rtx static_chain_rtx; | |
1548 | extern rtx static_chain_incoming_rtx; | |
07ebc930 | 1549 | extern rtx return_address_pointer_rtx; |
3b80f6ca RH |
1550 | |
1551 | /* Include the RTL generation functions. */ | |
1552 | ||
1553 | #ifndef NO_GENRTL_H | |
1554 | #include "genrtl.h" | |
1555 | #endif | |
1556 | ||
41472af8 MM |
1557 | /* There are some RTL codes that require special attention; the |
1558 | generation functions included above do the raw handling. If you | |
b4213325 MM |
1559 | add to this list, modify special_rtx in gengenrtl.c as well. You |
1560 | should also modify gen_rtx to use the special function. */ | |
3b80f6ca | 1561 | |
cdadb1dd | 1562 | extern rtx gen_rtx_CONST_DOUBLE PARAMS ((enum machine_mode, rtx, |
0133b7d9 | 1563 | HOST_WIDE_INT, HOST_WIDE_INT)); |
cdadb1dd | 1564 | extern rtx gen_rtx_CONST_INT PARAMS ((enum machine_mode, HOST_WIDE_INT)); |
08394eef | 1565 | extern rtx gen_raw_REG PARAMS ((enum machine_mode, int)); |
cdadb1dd | 1566 | extern rtx gen_rtx_REG PARAMS ((enum machine_mode, int)); |
ddef6bc7 | 1567 | extern rtx gen_rtx_SUBREG PARAMS ((enum machine_mode, rtx, int)); |
cdadb1dd | 1568 | extern rtx gen_rtx_MEM PARAMS ((enum machine_mode, rtx)); |
3b80f6ca | 1569 | |
ddef6bc7 JJ |
1570 | extern rtx gen_lowpart_SUBREG PARAMS ((enum machine_mode, rtx)); |
1571 | ||
aefdd5ab JL |
1572 | /* We need the cast here to ensure that we get the same result both with |
1573 | and without prototypes. */ | |
1574 | #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N)) | |
3b80f6ca | 1575 | |
6f29feb1 JW |
1576 | /* Virtual registers are used during RTL generation to refer to locations into |
1577 | the stack frame when the actual location isn't known until RTL generation | |
1578 | is complete. The routine instantiate_virtual_regs replaces these with | |
1579 | the proper value, which is normally {frame,arg,stack}_pointer_rtx plus | |
1580 | a constant. */ | |
1581 | ||
1582 | #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) | |
1583 | ||
1584 | /* This points to the first word of the incoming arguments passed on the stack, | |
1585 | either by the caller or by the callee when pretending it was passed by the | |
1586 | caller. */ | |
1587 | ||
5da077de | 1588 | #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) |
6f29feb1 JW |
1589 | |
1590 | #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) | |
1591 | ||
60343c3b | 1592 | /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first |
6f29feb1 JW |
1593 | variable on the stack. Otherwise, it points to the first variable on |
1594 | the stack. */ | |
1595 | ||
5da077de | 1596 | #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) |
6f29feb1 JW |
1597 | |
1598 | #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) | |
1599 | ||
1600 | /* This points to the location of dynamically-allocated memory on the stack | |
1601 | immediately after the stack pointer has been adjusted by the amount | |
1602 | desired. */ | |
1603 | ||
5da077de | 1604 | #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) |
6f29feb1 JW |
1605 | |
1606 | #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) | |
1607 | ||
1608 | /* This points to the location in the stack at which outgoing arguments should | |
1609 | be written when the stack is pre-pushed (arguments pushed using push | |
1610 | insns always use sp). */ | |
1611 | ||
5da077de | 1612 | #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) |
6f29feb1 JW |
1613 | |
1614 | #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) | |
1615 | ||
71038426 RH |
1616 | /* This points to the Canonical Frame Address of the function. This |
1617 | should corrospond to the CFA produced by INCOMING_FRAME_SP_OFFSET, | |
1618 | but is calculated relative to the arg pointer for simplicity; the | |
f590cca1 | 1619 | frame pointer nor stack pointer are necessarily fixed relative to |
71038426 RH |
1620 | the CFA until after reload. */ |
1621 | ||
5da077de | 1622 | #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) |
71038426 RH |
1623 | |
1624 | #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) | |
1625 | ||
1626 | #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) | |
6f29feb1 | 1627 | |
848e0190 JH |
1628 | /* REGNUM never really appearing in the INSN stream. */ |
1629 | #define INVALID_REGNUM (~(unsigned int)0) | |
1630 | ||
cdadb1dd | 1631 | extern rtx find_next_ref PARAMS ((rtx, rtx)); |
f837a861 | 1632 | |
bd7cf17e | 1633 | extern rtx output_constant_def PARAMS ((union tree_node *, int)); |
cdadb1dd | 1634 | extern rtx immed_real_const PARAMS ((union tree_node *)); |
6f29feb1 JW |
1635 | |
1636 | /* Define a default value for STORE_FLAG_VALUE. */ | |
1637 | ||
1638 | #ifndef STORE_FLAG_VALUE | |
1639 | #define STORE_FLAG_VALUE 1 | |
1640 | #endif | |
1641 | ||
0ea0e871 JL |
1642 | /* Nonzero after the second flow pass has completed. |
1643 | Set to 1 or 0 by toplev.c */ | |
1644 | extern int flow2_completed; | |
1645 | ||
6f29feb1 | 1646 | /* Nonzero after end of reload pass. |
0ea0e871 | 1647 | Set to 1 or 0 by reload1.c. */ |
6f29feb1 JW |
1648 | |
1649 | extern int reload_completed; | |
1650 | ||
1651 | /* Set to 1 while reload_as_needed is operating. | |
1652 | Required by some machines to handle any generated moves differently. */ | |
1653 | ||
1654 | extern int reload_in_progress; | |
1655 | ||
1656 | /* If this is nonzero, we do not bother generating VOLATILE | |
1657 | around volatile memory references, and we are willing to | |
1658 | output indirect addresses. If cse is to follow, we reject | |
1659 | indirect addresses so a useful potential cse is generated; | |
1660 | if it is used only once, instruction combination will produce | |
1661 | the same indirect address eventually. */ | |
1662 | extern int cse_not_expected; | |
1663 | ||
f1db3576 JL |
1664 | /* Set to nonzero before life analysis to indicate that it is unsafe to |
1665 | generate any new pseudo registers. */ | |
1666 | extern int no_new_pseudos; | |
1667 | ||
f5118aa5 | 1668 | /* Translates rtx code to tree code, for those codes needed by |
88efc60a RK |
1669 | REAL_ARITHMETIC. The function returns an int because the caller may not |
1670 | know what `enum tree_code' means. */ | |
1671 | ||
cdadb1dd | 1672 | extern int rtx_to_tree_code PARAMS ((enum rtx_code)); |
9ae8ffe7 | 1673 | |
ac957f13 | 1674 | /* In tree.c */ |
ac957f13 | 1675 | struct obstack; |
cdadb1dd | 1676 | extern void gcc_obstack_init PARAMS ((struct obstack *)); |
1f8f4a0b | 1677 | |
ac957f13 JL |
1678 | /* In cse.c */ |
1679 | struct cse_basic_block_data; | |
f1c1dfc3 BS |
1680 | |
1681 | /* Return the right cost to give to an operation | |
1682 | to make the cost of the corresponding register-to-register instruction | |
1683 | N times that of a fast register-to-register instruction. */ | |
1684 | #define COSTS_N_INSNS(N) ((N) * 4) | |
1685 | ||
1686 | /* Maximum cost of a rtl expression. This value has the special meaning | |
1687 | not to use an rtx with this cost under any circumstances. */ | |
1688 | #define MAX_COST INT_MAX | |
1689 | ||
cdadb1dd | 1690 | extern int rtx_cost PARAMS ((rtx, enum rtx_code)); |
01329426 | 1691 | extern int address_cost PARAMS ((rtx, enum machine_mode)); |
4793dca1 | 1692 | extern void delete_trivially_dead_insns PARAMS ((rtx, int, int)); |
ac957f13 | 1693 | #ifdef BUFSIZ |
cdadb1dd | 1694 | extern int cse_main PARAMS ((rtx, int, int, FILE *)); |
ac957f13 | 1695 | #endif |
cdadb1dd | 1696 | extern void cse_end_of_basic_block PARAMS ((rtx, |
ac957f13 JL |
1697 | struct cse_basic_block_data *, |
1698 | int, int, int)); | |
1699 | ||
1700 | /* In jump.c */ | |
cdadb1dd KG |
1701 | extern int comparison_dominates_p PARAMS ((enum rtx_code, enum rtx_code)); |
1702 | extern int condjump_p PARAMS ((rtx)); | |
e4c85816 JH |
1703 | extern int any_condjump_p PARAMS ((rtx)); |
1704 | extern int any_uncondjump_p PARAMS ((rtx)); | |
1705 | extern int safe_to_remove_jump_p PARAMS ((rtx)); | |
1706 | extern rtx pc_set PARAMS ((rtx)); | |
cdadb1dd KG |
1707 | extern rtx condjump_label PARAMS ((rtx)); |
1708 | extern int simplejump_p PARAMS ((rtx)); | |
1709 | extern int returnjump_p PARAMS ((rtx)); | |
1710 | extern int onlyjump_p PARAMS ((rtx)); | |
1711 | extern int sets_cc0_p PARAMS ((rtx)); | |
2ea64f10 | 1712 | extern int invert_jump_1 PARAMS ((rtx, rtx)); |
9ba11d5a | 1713 | extern int invert_jump PARAMS ((rtx, rtx, int)); |
cdadb1dd KG |
1714 | extern int rtx_renumbered_equal_p PARAMS ((rtx, rtx)); |
1715 | extern int true_regnum PARAMS ((rtx)); | |
2ea64f10 | 1716 | extern int redirect_jump_1 PARAMS ((rtx, rtx)); |
9ba11d5a | 1717 | extern int redirect_jump PARAMS ((rtx, rtx, int)); |
cdadb1dd KG |
1718 | extern void rebuild_jump_labels PARAMS ((rtx)); |
1719 | extern void thread_jumps PARAMS ((rtx, int, int)); | |
cdadb1dd | 1720 | extern int rtx_equal_for_thread_p PARAMS ((rtx, rtx, rtx)); |
cdadb1dd | 1721 | extern int can_reverse_comparison_p PARAMS ((rtx, rtx)); |
ab94bc48 JH |
1722 | extern enum rtx_code reversed_comparison_code PARAMS ((rtx, rtx)); |
1723 | extern enum rtx_code reversed_comparison_code_parts PARAMS ((enum rtx_code, | |
1724 | rtx, rtx, rtx)); | |
cdadb1dd KG |
1725 | extern void delete_for_peephole PARAMS ((rtx, rtx)); |
1726 | extern int condjump_in_parallel_p PARAMS ((rtx)); | |
1727 | extern void never_reached_warning PARAMS ((rtx)); | |
0045d504 JH |
1728 | extern void purge_line_number_notes PARAMS ((rtx)); |
1729 | extern void copy_loop_headers PARAMS ((rtx)); | |
14bf4a33 | 1730 | |
ac957f13 | 1731 | /* In emit-rtl.c. */ |
cdadb1dd KG |
1732 | extern int max_reg_num PARAMS ((void)); |
1733 | extern int max_label_num PARAMS ((void)); | |
1734 | extern int get_first_label_num PARAMS ((void)); | |
1735 | extern void delete_insns_since PARAMS ((rtx)); | |
1736 | extern void mark_reg_pointer PARAMS ((rtx, int)); | |
1737 | extern void mark_user_reg PARAMS ((rtx)); | |
1738 | extern void reset_used_flags PARAMS ((rtx)); | |
1739 | extern void reorder_insns PARAMS ((rtx, rtx, rtx)); | |
1740 | extern int get_max_uid PARAMS ((void)); | |
1741 | extern int in_sequence_p PARAMS ((void)); | |
1742 | extern void force_next_line_note PARAMS ((void)); | |
1743 | extern void clear_emit_caches PARAMS ((void)); | |
1744 | extern void init_emit PARAMS ((void)); | |
1745 | extern void init_emit_once PARAMS ((int)); | |
1746 | extern void push_topmost_sequence PARAMS ((void)); | |
1747 | extern void pop_topmost_sequence PARAMS ((void)); | |
1748 | extern int subreg_realpart_p PARAMS ((rtx)); | |
1749 | extern void reverse_comparison PARAMS ((rtx)); | |
1750 | extern void set_new_first_and_last_insn PARAMS ((rtx, rtx)); | |
1751 | extern void set_new_first_and_last_label_num PARAMS ((int, int)); | |
1752 | extern void set_new_last_label_num PARAMS ((int)); | |
d1b81779 | 1753 | extern void unshare_all_rtl_again PARAMS ((rtx)); |
cdadb1dd KG |
1754 | extern void set_last_insn PARAMS ((rtx)); |
1755 | extern void link_cc0_insns PARAMS ((rtx)); | |
1756 | extern void add_insn PARAMS ((rtx)); | |
1757 | extern void add_insn_before PARAMS ((rtx, rtx)); | |
1758 | extern void add_insn_after PARAMS ((rtx, rtx)); | |
1759 | extern void remove_insn PARAMS ((rtx)); | |
1760 | extern void reorder_insns_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1761 | extern void emit_insn_after_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1762 | extern enum rtx_code classify_insn PARAMS ((rtx)); | |
1763 | extern rtx emit PARAMS ((rtx)); | |
a11759a3 JR |
1764 | /* Query and clear/ restore no_line_numbers. This is used by the |
1765 | switch / case handling in stmt.c to give proper line numbers in | |
1766 | warnings about unreachable code. */ | |
cdadb1dd KG |
1767 | int force_line_numbers PARAMS ((void)); |
1768 | void restore_line_number_status PARAMS ((int old_value)); | |
1769 | extern void renumber_insns PARAMS ((FILE *)); | |
f8855270 | 1770 | extern void remove_unnecessary_notes PARAMS ((void)); |
ac957f13 | 1771 | |
ac957f13 | 1772 | /* In combine.c */ |
770ae6cc RK |
1773 | extern int combine_instructions PARAMS ((rtx, unsigned int)); |
1774 | extern unsigned int extended_count PARAMS ((rtx, enum machine_mode, int)); | |
1775 | extern rtx remove_death PARAMS ((unsigned int, rtx)); | |
ac957f13 | 1776 | #ifdef BUFSIZ |
cdadb1dd KG |
1777 | extern void dump_combine_stats PARAMS ((FILE *)); |
1778 | extern void dump_combine_total_stats PARAMS ((FILE *)); | |
ac957f13 JL |
1779 | #endif |
1780 | ||
1781 | /* In sched.c. */ | |
1782 | #ifdef BUFSIZ | |
cdadb1dd | 1783 | extern void schedule_insns PARAMS ((FILE *)); |
18e720b3 | 1784 | extern void schedule_ebbs PARAMS ((FILE *)); |
ac957f13 | 1785 | #endif |
cdadb1dd | 1786 | extern void fix_sched_param PARAMS ((const char *, const char *)); |
ac957f13 JL |
1787 | |
1788 | /* In print-rtl.c */ | |
47c10e9b | 1789 | extern const char *print_rtx_head; |
cdadb1dd KG |
1790 | extern void debug_rtx PARAMS ((rtx)); |
1791 | extern void debug_rtx_list PARAMS ((rtx, int)); | |
4c85a96d | 1792 | extern void debug_rtx_range PARAMS ((rtx, rtx)); |
cdadb1dd | 1793 | extern rtx debug_rtx_find PARAMS ((rtx, int)); |
ac957f13 | 1794 | #ifdef BUFSIZ |
cdadb1dd | 1795 | extern void print_rtl PARAMS ((FILE *, rtx)); |
75b7557d | 1796 | extern void print_simple_rtl PARAMS ((FILE *, rtx)); |
cdadb1dd KG |
1797 | extern int print_rtl_single PARAMS ((FILE *, rtx)); |
1798 | extern void print_inline_rtx PARAMS ((FILE *, rtx, int)); | |
ac957f13 JL |
1799 | #endif |
1800 | ||
1801 | /* In loop.c */ | |
cdadb1dd KG |
1802 | extern void init_loop PARAMS ((void)); |
1803 | extern rtx libcall_other_reg PARAMS ((rtx, rtx)); | |
ac957f13 | 1804 | #ifdef BUFSIZ |
1bf14ad7 | 1805 | extern void loop_optimize PARAMS ((rtx, FILE *, int)); |
ac957f13 | 1806 | #endif |
cdadb1dd | 1807 | extern void record_excess_regs PARAMS ((rtx, rtx, rtx *)); |
ac957f13 JL |
1808 | |
1809 | /* In function.c */ | |
cdadb1dd KG |
1810 | extern void reposition_prologue_and_epilogue_notes PARAMS ((rtx)); |
1811 | extern void thread_prologue_and_epilogue_insns PARAMS ((rtx)); | |
1812 | extern int prologue_epilogue_contains PARAMS ((rtx)); | |
0a1c58a2 | 1813 | extern int sibcall_epilogue_contains PARAMS ((rtx)); |
591ccf92 | 1814 | extern void preserve_rtl_expr_result PARAMS ((rtx)); |
cdadb1dd KG |
1815 | extern void mark_temp_addr_taken PARAMS ((rtx)); |
1816 | extern void update_temp_slot_address PARAMS ((rtx, rtx)); | |
cdadb1dd | 1817 | extern void purge_addressof PARAMS ((rtx)); |
659e47fb | 1818 | extern void purge_hard_subreg_sets PARAMS ((rtx)); |
ac957f13 | 1819 | |
ac957f13 | 1820 | /* In stmt.c */ |
47ee9bcb | 1821 | extern void set_file_and_line_for_stmt PARAMS ((const char *, int)); |
cdadb1dd KG |
1822 | extern void expand_null_return PARAMS ((void)); |
1823 | extern void emit_jump PARAMS ((rtx)); | |
1824 | extern int preserve_subexpressions_p PARAMS ((void)); | |
ac957f13 JL |
1825 | |
1826 | /* In expr.c */ | |
3bdf5ad1 RK |
1827 | extern void move_by_pieces PARAMS ((rtx, rtx, |
1828 | unsigned HOST_WIDE_INT, | |
1829 | unsigned int)); | |
2e245dac | 1830 | |
ac957f13 | 1831 | /* In flow.c */ |
cdadb1dd | 1832 | extern void recompute_reg_usage PARAMS ((rtx, int)); |
ac957f13 | 1833 | #ifdef BUFSIZ |
cdadb1dd KG |
1834 | extern void print_rtl_with_bb PARAMS ((FILE *, rtx)); |
1835 | extern void dump_flow_info PARAMS ((FILE *)); | |
ac957f13 JL |
1836 | #endif |
1837 | ||
1838 | /* In expmed.c */ | |
cdadb1dd KG |
1839 | extern void init_expmed PARAMS ((void)); |
1840 | extern void expand_inc PARAMS ((rtx, rtx)); | |
1841 | extern void expand_dec PARAMS ((rtx, rtx)); | |
1842 | extern rtx expand_mult_highpart PARAMS ((enum machine_mode, rtx, | |
ac957f13 JL |
1843 | unsigned HOST_WIDE_INT, rtx, |
1844 | int, int)); | |
1845 | ||
50b2596f KG |
1846 | /* In gcse.c */ |
1847 | #ifdef BUFSIZ | |
cdadb1dd | 1848 | extern int gcse_main PARAMS ((rtx, FILE *)); |
50b2596f KG |
1849 | #endif |
1850 | ||
ac957f13 | 1851 | /* In global.c */ |
cdadb1dd | 1852 | extern void mark_elimination PARAMS ((int, int)); |
ac957f13 | 1853 | #ifdef BUFSIZ |
cdadb1dd KG |
1854 | extern int global_alloc PARAMS ((FILE *)); |
1855 | extern void dump_global_regs PARAMS ((FILE *)); | |
ac957f13 | 1856 | #endif |
cab634f2 | 1857 | #ifdef HARD_CONST |
cdadb1dd | 1858 | extern void retry_global_alloc PARAMS ((int, HARD_REG_SET)); |
cab634f2 | 1859 | #endif |
d29c259b | 1860 | extern void build_insn_chain PARAMS ((rtx)); |
ac957f13 JL |
1861 | |
1862 | /* In regclass.c */ | |
cdadb1dd KG |
1863 | extern int reg_classes_intersect_p PARAMS ((enum reg_class, enum reg_class)); |
1864 | extern int reg_class_subset_p PARAMS ((enum reg_class, enum reg_class)); | |
1865 | extern void globalize_reg PARAMS ((int)); | |
1866 | extern void init_regs PARAMS ((void)); | |
1867 | extern void init_reg_sets PARAMS ((void)); | |
1868 | extern void regset_release_memory PARAMS ((void)); | |
1869 | extern void regclass_init PARAMS ((void)); | |
1870 | extern void regclass PARAMS ((rtx, int, FILE *)); | |
770ae6cc RK |
1871 | extern void reg_scan PARAMS ((rtx, unsigned int, int)); |
1872 | extern void reg_scan_update PARAMS ((rtx, rtx, unsigned int)); | |
cdadb1dd KG |
1873 | extern void fix_register PARAMS ((const char *, int, int)); |
1874 | ||
1875 | extern void delete_null_pointer_checks PARAMS ((rtx)); | |
a157febd | 1876 | |
50b2596f KG |
1877 | /* In regmove.c */ |
1878 | #ifdef BUFSIZ | |
cdadb1dd | 1879 | extern void regmove_optimize PARAMS ((rtx, int, FILE *)); |
50b2596f | 1880 | #endif |
1e7f0a48 | 1881 | extern void combine_stack_adjustments PARAMS ((void)); |
50b2596f KG |
1882 | |
1883 | /* In reorg.c */ | |
1884 | #ifdef BUFSIZ | |
cdadb1dd | 1885 | extern void dbr_schedule PARAMS ((rtx, FILE *)); |
50b2596f KG |
1886 | #endif |
1887 | ||
ac957f13 JL |
1888 | /* In local-alloc.c */ |
1889 | #ifdef BUFSIZ | |
cdadb1dd | 1890 | extern void dump_local_alloc PARAMS ((FILE *)); |
ac957f13 | 1891 | #endif |
cdadb1dd KG |
1892 | extern int local_alloc PARAMS ((void)); |
1893 | extern int function_invariant_p PARAMS ((rtx)); | |
ac957f13 | 1894 | |
ac957f13 | 1895 | /* In profile.c */ |
cdadb1dd | 1896 | extern void init_branch_prob PARAMS ((const char *)); |
51891abe JH |
1897 | extern void branch_prob PARAMS ((void)); |
1898 | extern void end_branch_prob PARAMS ((void)); | |
cdadb1dd | 1899 | extern void output_func_start_profiler PARAMS ((void)); |
ac957f13 JL |
1900 | |
1901 | /* In reg-stack.c */ | |
1902 | #ifdef BUFSIZ | |
cdadb1dd | 1903 | extern void reg_to_stack PARAMS ((rtx, FILE *)); |
ac957f13 | 1904 | #endif |
ac957f13 JL |
1905 | |
1906 | /* In fold-const.c */ | |
05bccae2 RK |
1907 | extern int add_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, |
1908 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1909 | unsigned HOST_WIDE_INT *, | |
1910 | HOST_WIDE_INT *)); | |
1911 | extern int neg_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1912 | unsigned HOST_WIDE_INT *, | |
1913 | HOST_WIDE_INT *)); | |
1914 | extern int mul_double PARAMS ((unsigned HOST_WIDE_INT, | |
1915 | HOST_WIDE_INT, | |
1916 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1917 | unsigned HOST_WIDE_INT *, | |
1918 | HOST_WIDE_INT *)); | |
1919 | extern void lshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1920 | HOST_WIDE_INT, unsigned int, | |
1921 | unsigned HOST_WIDE_INT *, | |
1922 | HOST_WIDE_INT *, int)); | |
1923 | extern void rshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1924 | HOST_WIDE_INT, unsigned int, | |
1925 | unsigned HOST_WIDE_INT *, | |
1926 | HOST_WIDE_INT *, int)); | |
1927 | extern void lrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1928 | HOST_WIDE_INT, unsigned int, | |
1929 | unsigned HOST_WIDE_INT *, | |
1930 | HOST_WIDE_INT *)); | |
1931 | extern void rrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1932 | HOST_WIDE_INT, unsigned int, | |
1933 | unsigned HOST_WIDE_INT *, | |
1934 | HOST_WIDE_INT *)); | |
ac957f13 JL |
1935 | |
1936 | /* In calls.c */ | |
ebb1b59a BS |
1937 | enum libcall_type |
1938 | { | |
1939 | LCT_NORMAL = 0, | |
1940 | LCT_CONST = 1, | |
1941 | LCT_PURE = 2, | |
1942 | LCT_CONST_MAKE_BLOCK = 3, | |
695ee791 | 1943 | LCT_PURE_MAKE_BLOCK = 4, |
9555a122 RH |
1944 | LCT_NORETURN = 5, |
1945 | LCT_THROW = 6 | |
ebb1b59a BS |
1946 | }; |
1947 | ||
1948 | extern void emit_library_call PARAMS ((rtx, enum libcall_type, | |
1949 | enum machine_mode, int, | |
1950 | ...)); | |
1951 | extern rtx emit_library_call_value PARAMS ((rtx, rtx, enum libcall_type, | |
1952 | enum machine_mode, int, | |
1953 | ...)); | |
ac957f13 JL |
1954 | |
1955 | /* In unroll.c */ | |
cdadb1dd | 1956 | extern int set_dominates_use PARAMS ((int, int, int, rtx, rtx)); |
ac957f13 JL |
1957 | |
1958 | /* In varasm.c */ | |
cdadb1dd | 1959 | extern int in_data_section PARAMS ((void)); |
cdadb1dd | 1960 | extern void init_varasm_once PARAMS ((void)); |
ac957f13 JL |
1961 | |
1962 | /* In rtl.c */ | |
cdadb1dd | 1963 | extern void init_rtl PARAMS ((void)); |
c25c12b8 R |
1964 | extern void traverse_md_constants PARAMS ((int (*) (void **, void *), |
1965 | void *)); | |
1966 | struct md_constant { char *name, *value; }; | |
ac957f13 | 1967 | |
bcdaba58 | 1968 | #ifdef BUFSIZ |
cdadb1dd KG |
1969 | extern int read_skip_spaces PARAMS ((FILE *)); |
1970 | extern rtx read_rtx PARAMS ((FILE *)); | |
bcdaba58 RH |
1971 | #endif |
1972 | ||
1973 | extern const char *read_rtx_filename; | |
1974 | extern int read_rtx_lineno; | |
1975 | ||
987009bf ZW |
1976 | /* Redefine abort to report an internal error w/o coredump, and |
1977 | reporting the location of the error in the source file. This logic | |
1978 | is duplicated in rtl.h and tree.h because every file that needs the | |
1979 | special abort includes one or both. toplev.h gets too few files, | |
1980 | system.h gets too many. */ | |
1981 | ||
cdadb1dd | 1982 | extern void fancy_abort PARAMS ((const char *, int, const char *)) |
987009bf | 1983 | ATTRIBUTE_NORETURN; |
fbfc1192 | 1984 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) |
987009bf | 1985 | |
ac957f13 | 1986 | /* In alias.c */ |
db048faf | 1987 | extern rtx canon_rtx PARAMS ((rtx)); |
cdadb1dd | 1988 | extern int true_dependence PARAMS ((rtx, enum machine_mode, rtx, |
e38fe8e0 | 1989 | int (*)(rtx, int))); |
a13d4ebf AM |
1990 | extern rtx get_addr PARAMS ((rtx)); |
1991 | extern int canon_true_dependence PARAMS ((rtx, enum machine_mode, rtx, | |
1992 | rtx, int (*)(rtx, int))); | |
cdadb1dd KG |
1993 | extern int read_dependence PARAMS ((rtx, rtx)); |
1994 | extern int anti_dependence PARAMS ((rtx, rtx)); | |
1995 | extern int output_dependence PARAMS ((rtx, rtx)); | |
1996 | extern void mark_constant_function PARAMS ((void)); | |
1997 | extern void init_alias_once PARAMS ((void)); | |
1998 | extern void init_alias_analysis PARAMS ((void)); | |
1999 | extern void end_alias_analysis PARAMS ((void)); | |
cdadb1dd | 2000 | extern rtx addr_side_effect_eval PARAMS ((rtx, int, int)); |
ba4828e0 | 2001 | extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT)); |
4c649323 | 2002 | |
0a1c58a2 JL |
2003 | /* In sibcall.c */ |
2004 | typedef enum { | |
2005 | sibcall_use_normal = 1, | |
2006 | sibcall_use_tail_recursion, | |
2007 | sibcall_use_sibcall | |
2008 | } sibcall_use_t; | |
2009 | ||
2010 | extern void optimize_sibling_and_tail_recursive_calls PARAMS ((void)); | |
2011 | extern void replace_call_placeholder PARAMS ((rtx, sibcall_use_t)); | |
2012 | ||
21b2cd73 | 2013 | #ifdef STACK_REGS |
cdadb1dd | 2014 | extern int stack_regs_mentioned PARAMS ((rtx insn)); |
21b2cd73 JH |
2015 | #endif |
2016 | ||
a157febd | 2017 | /* In toplev.c */ |
a157febd | 2018 | extern rtx stack_limit_rtx; |
dfdb644f | 2019 | |
7b82b5da | 2020 | /* In regrename.c */ |
7b82b5da SC |
2021 | extern void regrename_optimize PARAMS ((void)); |
2022 | ||
4db384c9 | 2023 | /* In ifcvt.c */ |
2ea64f10 RH |
2024 | extern void if_convert PARAMS ((int)); |
2025 | ||
4db384c9 JH |
2026 | /* In predict.c */ |
2027 | extern void invert_br_probabilities PARAMS ((rtx)); | |
88657302 | 2028 | #endif /* ! GCC_RTL_H */ |