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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, |
f52eda29 | 3 | 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
6f29feb1 | 4 | |
1322177d | 5 | This file is part of GCC. |
6f29feb1 | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
6f29feb1 | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6f29feb1 JW |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 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 | |
173b24b9 | 34 | /* Value used by some passes to "recognize" noop moves as valid |
eebedaa5 | 35 | instructions. */ |
b5832b43 JH |
36 | #define NOOP_MOVE_INSN_CODE INT_MAX |
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 | 50 | |
cf403648 | 51 | #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) |
6f29feb1 JW |
52 | /* The cast here, saves many elsewhere. */ |
53 | ||
86460bab | 54 | extern const unsigned char rtx_length[NUM_RTX_CODE]; |
0f41302f | 55 | #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) |
6f29feb1 | 56 | |
86460bab | 57 | extern const char * const rtx_name[NUM_RTX_CODE]; |
0f41302f | 58 | #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) |
6f29feb1 | 59 | |
86460bab | 60 | extern const char * const rtx_format[NUM_RTX_CODE]; |
0f41302f | 61 | #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) |
6f29feb1 | 62 | |
86460bab | 63 | extern const char rtx_class[NUM_RTX_CODE]; |
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. */ | |
173b24b9 RK |
74 | unsigned min_after_vec: 1; /* minimum address target label is |
75 | after the ADDR_DIFF_VEC. */ | |
76 | unsigned max_after_vec: 1; /* maximum address target label is | |
77 | after the ADDR_DIFF_VEC. */ | |
78 | unsigned min_after_base: 1; /* minimum address target label is | |
79 | after BASE. */ | |
80 | unsigned max_after_base: 1; /* maximum address target label is | |
81 | after BASE. */ | |
33f7f353 JR |
82 | /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ |
83 | unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ | |
84 | unsigned : 2; | |
85 | unsigned scale : 8; | |
86 | } addr_diff_vec_flags; | |
87 | ||
173b24b9 RK |
88 | /* Structure used to describe the attributes of a MEM. These are hashed |
89 | so MEMs that the same attributes share a data structure. This means | |
90 | they cannot be modified in place. If any element is nonzero, it means | |
91 | the value of the corresponding attribute is unknown. */ | |
92 | typedef struct | |
93 | { | |
eebedaa5 | 94 | HOST_WIDE_INT alias; /* Memory alias set. */ |
998d7deb | 95 | tree expr; /* expr corresponding to MEM. */ |
eebedaa5 | 96 | rtx offset; /* Offset from start of DECL, as CONST_INT. */ |
173b24b9 | 97 | rtx size; /* Size in bytes, as a CONST_INT. */ |
d022d93e | 98 | unsigned int align; /* Alignment of MEM in bits. */ |
173b24b9 RK |
99 | } mem_attrs; |
100 | ||
6f29feb1 JW |
101 | /* Common union for an element of an rtx. */ |
102 | ||
103 | typedef union rtunion_def | |
104 | { | |
5f4f0e22 | 105 | HOST_WIDE_INT rtwint; |
6f29feb1 | 106 | int rtint; |
770ae6cc | 107 | unsigned int rtuint; |
3cce094d | 108 | const char *rtstr; |
2f78c311 ZW |
109 | rtx rtx; |
110 | rtvec rtvec; | |
6f29feb1 | 111 | enum machine_mode rttype; |
33f7f353 | 112 | addr_diff_vec_flags rt_addr_diff_vec_flags; |
eab5c70a | 113 | struct cselib_val_struct *rt_cselib; |
0dfa1860 | 114 | struct bitmap_head_def *rtbit; |
2f78c311 | 115 | tree rttree; |
e881bb1b | 116 | struct basic_block_def *bb; |
173b24b9 | 117 | mem_attrs *rtmem; |
6f29feb1 JW |
118 | } rtunion; |
119 | ||
120 | /* RTL expression ("rtx"). */ | |
121 | ||
2f78c311 | 122 | struct rtx_def |
6f29feb1 | 123 | { |
6f29feb1 | 124 | /* The kind of expression this is. */ |
c149cc37 | 125 | ENUM_BITFIELD(rtx_code) code: 16; |
18def38f | 126 | |
6f29feb1 | 127 | /* The kind of value the expression has. */ |
c149cc37 RL |
128 | ENUM_BITFIELD(machine_mode) mode : 8; |
129 | ||
0a1c58a2 | 130 | /* 1 in an INSN if it can alter flow of control |
b8ec5764 | 131 | within this function. |
10b76d73 | 132 | MEM_KEEP_ALIAS_SET_P in a MEM. |
3258e996 RK |
133 | LINK_COST_ZERO in an INSN_LIST. |
134 | SET_IS_RETURN_P in a SET. */ | |
6f29feb1 | 135 | unsigned int jump : 1; |
b8ec5764 VM |
136 | /* 1 in an INSN if it can call another function. |
137 | LINK_COST_FREE in an INSN_LIST. */ | |
6f29feb1 | 138 | unsigned int call : 1; |
49982682 JW |
139 | /* 1 in a REG if value of this expression will never change during |
140 | the current function, even though it is not manifestly constant. | |
141 | 1 in a MEM if contents of memory are constant. This does not | |
142 | necessarily mean that the value of this expression is constant. | |
07be3989 | 143 | 1 in a SUBREG if it is from a promoted variable that is unsigned. |
6f29feb1 JW |
144 | 1 in a SYMBOL_REF if it addresses something in the per-function |
145 | constants pool. | |
146 | 1 in a CALL_INSN if it is a const call. | |
147 | 1 in a JUMP_INSN if it is a branch that should be annulled. Valid from | |
148 | reorg until end of compilation; cleared before used. */ | |
149 | unsigned int unchanging : 1; | |
150 | /* 1 in a MEM expression if contents of memory are volatile. | |
151 | 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL or BARRIER | |
152 | if it is deleted. | |
153 | 1 in a REG expression if corresponds to a variable declared by the user. | |
154 | 0 for an internally generated temporary. | |
2a406d2a RS |
155 | In a SYMBOL_REF, this flag is used for machine-specific purposes. |
156 | In a LABEL_REF or in a REG_LABEL note, this is LABEL_REF_NONLOCAL_P. */ | |
6f29feb1 | 157 | unsigned int volatil : 1; |
8358a974 | 158 | /* 1 in a MEM referring to a field of an aggregate. |
6f29feb1 JW |
159 | 0 if the MEM was a variable or the result of a * operator in C; |
160 | 1 if it was the result of a . or -> operator (on a struct) in C. | |
161 | 1 in a REG if the register is used only in exit code a loop. | |
f590cca1 | 162 | 1 in a SUBREG expression if was generated from a variable with a |
07be3989 | 163 | promoted mode. |
6f29feb1 JW |
164 | 1 in a CODE_LABEL if the label is used for nonlocal gotos |
165 | and must not be deleted even if its count is zero. | |
166 | 1 in a LABEL_REF if this is a reference to a label outside the | |
167 | current loop. | |
168 | 1 in an INSN, JUMP_INSN, or CALL_INSN if this insn must be scheduled | |
d45cf215 | 169 | together with the preceding insn. Valid only within sched. |
6f29feb1 JW |
170 | 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and |
171 | from the target of a branch. Valid from reorg until end of compilation; | |
b53978a3 JO |
172 | cleared before used. |
173 | 1 in an INSN if this insn is dead code. Valid only during | |
eebedaa5 | 174 | dead-code elimination phase; cleared before use. */ |
6f29feb1 JW |
175 | unsigned int in_struct : 1; |
176 | /* 1 if this rtx is used. This is used for copying shared structure. | |
177 | See `unshare_all_rtl'. | |
f590cca1 | 178 | In a REG, this is not needed for that purpose, and used instead |
6f29feb1 JW |
179 | in `leaf_renumber_regs_insn'. |
180 | In a SYMBOL_REF, means that emit_library_call | |
181 | has used it as the function. */ | |
182 | unsigned int used : 1; | |
183 | /* Nonzero if this rtx came from procedure integration. | |
184 | In a REG, nonzero means this reg refers to the return value | |
ff0b6b99 FS |
185 | of the current function. |
186 | 1 in a SYMBOL_REF if the symbol is weak. */ | |
6f29feb1 | 187 | unsigned integrated : 1; |
b664de3a | 188 | /* 1 in an INSN or a SET if this rtx is related to the call frame, |
c6df88cb | 189 | either changing how we compute the frame address or saving and |
f590cca1 | 190 | restoring registers in the prologue and epilogue. |
c6df88cb | 191 | 1 in a MEM if the MEM refers to a scalar, rather than a member of |
bd7cf17e | 192 | an aggregate. |
3502dc9c | 193 | 1 in a REG if the register is a pointer. |
bd7cf17e JJ |
194 | 1 in a SYMBOL_REF if it addresses something in the per-function |
195 | constant string pool. */ | |
469ac993 | 196 | unsigned frame_related : 1; |
0a25f1f5 | 197 | |
6f29feb1 JW |
198 | /* The first element of the operands of this rtx. |
199 | The number of operands and their types are controlled | |
200 | by the `code' field, according to rtl.def. */ | |
201 | rtunion fld[1]; | |
2f78c311 | 202 | }; |
6f29feb1 JW |
203 | |
204 | #define NULL_RTX (rtx) 0 | |
205 | ||
206 | /* Define macros to access the `code' field of the rtx. */ | |
207 | ||
dbbbbf3b JDA |
208 | #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) |
209 | #define PUT_CODE(RTX, CODE) ((RTX)->code = (ENUM_BITFIELD(rtx_code)) (CODE)) | |
6f29feb1 | 210 | |
dbbbbf3b JDA |
211 | #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) |
212 | #define PUT_MODE(RTX, MODE) ((RTX)->mode = (ENUM_BITFIELD(machine_mode)) (MODE)) | |
6f29feb1 JW |
213 | |
214 | #define RTX_INTEGRATED_P(RTX) ((RTX)->integrated) | |
215 | #define RTX_UNCHANGING_P(RTX) ((RTX)->unchanging) | |
469ac993 | 216 | #define RTX_FRAME_RELATED_P(RTX) ((RTX)->frame_related) |
6f29feb1 JW |
217 | |
218 | /* RTL vector. These appear inside RTX's when there is a need | |
219 | for a variable number of things. The principle use is inside | |
220 | PARALLEL expressions. */ | |
221 | ||
2f78c311 | 222 | struct rtvec_def { |
e9a25f70 | 223 | int num_elem; /* number of elements */ |
2f78c311 ZW |
224 | rtx elem[1]; |
225 | }; | |
6f29feb1 JW |
226 | |
227 | #define NULL_RTVEC (rtvec) 0 | |
228 | ||
229 | #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) | |
e9a25f70 | 230 | #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) |
6f29feb1 | 231 | |
b53978a3 | 232 | /* Predicate yielding nonzero iff X is an rtl for a register. */ |
6f29feb1 JW |
233 | #define REG_P(X) (GET_CODE (X) == REG) |
234 | ||
b53978a3 JO |
235 | /* Predicate yielding nonzero iff X is a label insn. */ |
236 | #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) | |
237 | ||
238 | /* Predicate yielding nonzero iff X is a jump insn. */ | |
239 | #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) | |
240 | ||
241 | /* Predicate yielding nonzero iff X is a note insn. */ | |
242 | #define NOTE_P(X) (GET_CODE (X) == NOTE) | |
243 | ||
244 | /* Predicate yielding nonzero iff X is a barrier insn. */ | |
245 | #define BARRIER_P(X) (GET_CODE (X) == BARRIER) | |
246 | ||
247 | /* Predicate yielding nonzero iff X is a data for a jump table. */ | |
248 | #define JUMP_TABLE_DATA_P(INSN) \ | |
249 | (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ | |
250 | GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) | |
251 | ||
6f29feb1 JW |
252 | /* 1 if X is a constant value that is an integer. */ |
253 | ||
254 | #define CONSTANT_P(X) \ | |
255 | (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ | |
256 | || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \ | |
ee5332b8 RH |
257 | || GET_CODE (X) == CONST || GET_CODE (X) == HIGH \ |
258 | || GET_CODE (X) == CONSTANT_P_RTX) | |
6f29feb1 JW |
259 | |
260 | /* General accessor macros for accessing the fields of an rtx. */ | |
261 | ||
f4524c9e | 262 | #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) |
ef178af3 ZW |
263 | /* The bit with a star outside the statement expr and an & inside is |
264 | so that N can be evaluated only once. */ | |
8784fdcd | 265 | #define RTL_CHECK1(RTX, N, C1) __extension__ \ |
83ab3839 | 266 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
267 | enum rtx_code _code = GET_CODE (_rtx); \ |
268 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
f52eda29 GS |
269 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ |
270 | __FUNCTION__); \ | |
ef178af3 | 271 | if (GET_RTX_FORMAT(_code)[_n] != C1) \ |
f52eda29 GS |
272 | rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ |
273 | __FUNCTION__); \ | |
ef178af3 ZW |
274 | &_rtx->fld[_n]; })) |
275 | ||
8784fdcd | 276 | #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ |
83ab3839 | 277 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
ef178af3 ZW |
278 | enum rtx_code _code = GET_CODE (_rtx); \ |
279 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
f52eda29 GS |
280 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ |
281 | __FUNCTION__); \ | |
ef178af3 ZW |
282 | if (GET_RTX_FORMAT(_code)[_n] != C1 \ |
283 | && GET_RTX_FORMAT(_code)[_n] != C2) \ | |
284 | rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ | |
fbfc1192 | 285 | __FUNCTION__); \ |
ef178af3 ZW |
286 | &_rtx->fld[_n]; })) |
287 | ||
8784fdcd | 288 | #define RTL_CHECKC1(RTX, N, C) __extension__ \ |
83ab3839 | 289 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
f52eda29 GS |
290 | if (GET_CODE (_rtx) != (C)) \ |
291 | rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ | |
292 | __FUNCTION__); \ | |
83ab3839 RH |
293 | &_rtx->fld[_n]; })) |
294 | ||
8784fdcd | 295 | #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ |
83ab3839 RH |
296 | (*({ rtx _rtx = (RTX); int _n = (N); \ |
297 | enum rtx_code _code = GET_CODE (_rtx); \ | |
f52eda29 GS |
298 | if (_code != (C1) && _code != (C2)) \ |
299 | rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ | |
300 | __FUNCTION__); \ | |
83ab3839 RH |
301 | &_rtx->fld[_n]; })) |
302 | ||
8784fdcd | 303 | #define RTVEC_ELT(RTVEC, I) __extension__ \ |
83ab3839 | 304 | (*({ rtvec _rtvec = (RTVEC); int _i = (I); \ |
ef178af3 ZW |
305 | if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ |
306 | rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ | |
fbfc1192 | 307 | __FUNCTION__); \ |
ef178af3 ZW |
308 | &_rtvec->elem[_i]; })) |
309 | ||
cdadb1dd | 310 | extern void rtl_check_failed_bounds PARAMS ((rtx, int, |
ef178af3 ZW |
311 | const char *, int, const char *)) |
312 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 313 | extern void rtl_check_failed_type1 PARAMS ((rtx, int, int, |
ef178af3 ZW |
314 | const char *, int, const char *)) |
315 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 316 | extern void rtl_check_failed_type2 PARAMS ((rtx, int, int, int, |
ef178af3 ZW |
317 | const char *, int, const char *)) |
318 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 319 | extern void rtl_check_failed_code1 PARAMS ((rtx, enum rtx_code, |
83ab3839 RH |
320 | const char *, int, const char *)) |
321 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 322 | extern void rtl_check_failed_code2 PARAMS ((rtx, enum rtx_code, enum rtx_code, |
83ab3839 RH |
323 | const char *, int, const char *)) |
324 | ATTRIBUTE_NORETURN; | |
cdadb1dd | 325 | extern void rtvec_check_failed_bounds PARAMS ((rtvec, int, |
ef178af3 ZW |
326 | const char *, int, const char *)) |
327 | ATTRIBUTE_NORETURN; | |
328 | ||
f4524c9e | 329 | #else /* not ENABLE_RTL_CHECKING */ |
ef178af3 | 330 | |
83ab3839 RH |
331 | #define RTL_CHECK1(RTX, N, C1) ((RTX)->fld[N]) |
332 | #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->fld[N]) | |
333 | #define RTL_CHECKC1(RTX, N, C) ((RTX)->fld[N]) | |
818a3b15 | 334 | #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->fld[N]) |
83ab3839 | 335 | #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) |
ef178af3 ZW |
336 | |
337 | #endif | |
338 | ||
f52eda29 GS |
339 | #define XWINT(RTX, N) (RTL_CHECK1 (RTX, N, 'w').rtwint) |
340 | #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rtint) | |
341 | #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rtstr) | |
342 | #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rtx) | |
343 | #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rtvec) | |
344 | #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rttype) | |
345 | #define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rtbit) | |
346 | #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rttree) | |
347 | #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').bb) | |
348 | #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rtstr) | |
ef178af3 ZW |
349 | |
350 | #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) | |
351 | #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) | |
352 | ||
353 | /* These are like XWINT, etc. except that they expect a '0' field instead | |
354 | of the normal type code. */ | |
355 | ||
f52eda29 GS |
356 | #define X0WINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtwint) |
357 | #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtint) | |
358 | #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtuint) | |
359 | #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtstr) | |
360 | #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtx) | |
361 | #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtvec) | |
362 | #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttype) | |
363 | #define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtbit) | |
364 | #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttree) | |
365 | #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').bb) | |
366 | #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) | |
367 | #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) | |
368 | #define X0MEMATTR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtmem) | |
369 | ||
370 | #define XCWINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtwint) | |
371 | #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtint) | |
372 | #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtuint) | |
373 | #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtstr) | |
374 | #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtx) | |
375 | #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtvec) | |
376 | #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttype) | |
377 | #define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtbit) | |
378 | #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttree) | |
379 | #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).bb) | |
380 | #define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_addr_diff_vec_flags) | |
381 | #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) | |
83ab3839 RH |
382 | |
383 | #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) | |
384 | #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) | |
385 | ||
f52eda29 | 386 | #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rtx) |
6f29feb1 JW |
387 | \f |
388 | /* ACCESS MACROS for particular fields of insns. */ | |
389 | ||
4e872036 AS |
390 | /* Determines whether X is an insn. */ |
391 | #define INSN_P(X) (GET_RTX_CLASS (GET_CODE(X)) == 'i') | |
392 | ||
6f29feb1 JW |
393 | /* Holds a unique number for each insn. |
394 | These are not necessarily sequentially increasing. */ | |
f52eda29 | 395 | #define INSN_UID(INSN) XINT (INSN, 0) |
6f29feb1 JW |
396 | |
397 | /* Chain insns together in sequence. */ | |
f52eda29 GS |
398 | #define PREV_INSN(INSN) XEXP (INSN, 1) |
399 | #define NEXT_INSN(INSN) XEXP (INSN, 2) | |
6f29feb1 JW |
400 | |
401 | /* The body of an insn. */ | |
f52eda29 | 402 | #define PATTERN(INSN) XEXP (INSN, 3) |
6f29feb1 JW |
403 | |
404 | /* Code number of instruction, from when it was recognized. | |
405 | -1 means this instruction has not been recognized yet. */ | |
f52eda29 | 406 | #define INSN_CODE(INSN) XINT (INSN, 4) |
6f29feb1 JW |
407 | |
408 | /* Set up in flow.c; empty before then. | |
409 | Holds a chain of INSN_LIST rtx's whose first operands point at | |
410 | previous insns with direct data-flow connections to this one. | |
411 | That means that those insns set variables whose next use is in this insn. | |
412 | They are always in the same basic block as this insn. */ | |
8f985ec4 | 413 | #define LOG_LINKS(INSN) XEXP(INSN, 5) |
6f29feb1 JW |
414 | |
415 | /* 1 if insn has been deleted. */ | |
416 | #define INSN_DELETED_P(INSN) ((INSN)->volatil) | |
417 | ||
24a28584 JH |
418 | /* 1 if insn is a call to a const or pure function. */ |
419 | #define CONST_OR_PURE_CALL_P(INSN) ((INSN)->unchanging) | |
6f29feb1 | 420 | |
0a1c58a2 JL |
421 | /* 1 if insn (assumed to be a CALL_INSN) is a sibling call. */ |
422 | #define SIBLING_CALL_P(INSN) ((INSN)->jump) | |
423 | ||
6f29feb1 | 424 | /* 1 if insn is a branch that should not unconditionally execute its |
eebedaa5 | 425 | delay slots, i.e., it is an annulled branch. */ |
6f29feb1 JW |
426 | #define INSN_ANNULLED_BRANCH_P(INSN) ((INSN)->unchanging) |
427 | ||
eebedaa5 | 428 | /* 1 if insn is a dead code. Valid only for dead-code elimination phase. */ |
b53978a3 JO |
429 | #define INSN_DEAD_CODE_P(INSN) ((INSN)->in_struct) |
430 | ||
6f29feb1 | 431 | /* 1 if insn is in a delay slot and is from the target of the branch. If |
6dc42e49 | 432 | the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be |
6f29feb1 JW |
433 | executed if the branch is taken. For annulled branches with this bit |
434 | clear, the insn should be executed only if the branch is not taken. */ | |
435 | #define INSN_FROM_TARGET_P(INSN) ((INSN)->in_struct) | |
436 | ||
f590cca1 RH |
437 | #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) |
438 | ||
439 | #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) | |
440 | ||
6f29feb1 | 441 | /* Holds a list of notes on what this insn does to various REGs. |
f590cca1 RH |
442 | It is a chain of EXPR_LIST rtx's, where the second operand is the |
443 | chain pointer and the first operand is the REG being described. | |
6f29feb1 | 444 | The mode field of the EXPR_LIST contains not a real machine mode |
f590cca1 | 445 | but a value from enum reg_note. */ |
6f29feb1 | 446 | |
8f985ec4 | 447 | #define REG_NOTES(INSN) XEXP(INSN, 6) |
6f29feb1 JW |
448 | |
449 | /* Don't forget to change reg_note_name in rtl.c. */ | |
f590cca1 RH |
450 | enum reg_note |
451 | { | |
452 | /* The value in REG dies in this insn (i.e., it is not needed past | |
453 | this insn). If REG is set in this insn, the REG_DEAD note may, | |
454 | but need not, be omitted. */ | |
455 | REG_DEAD = 1, | |
456 | ||
457 | /* The REG is autoincremented or autodecremented. */ | |
458 | REG_INC, | |
459 | ||
460 | /* Describes the insn as a whole; it says that the insn sets a register | |
461 | to a constant value or to be equivalent to a memory address. If the | |
462 | register is spilled to the stack then the constant value should be | |
463 | substituted for it. The contents of the REG_EQUIV is the constant | |
464 | value or memory address, which may be different from the source of | |
465 | the SET although it has the same value. A REG_EQUIV note may also | |
466 | appear on an insn which copies a register parameter to a pseudo-register, | |
467 | if there is a memory address which could be used to hold that | |
468 | pseudo-register throughout the function. */ | |
be1bb652 | 469 | REG_EQUIV, |
f590cca1 RH |
470 | |
471 | /* Like REG_EQUIV except that the destination is only momentarily equal | |
472 | to the specified rtx. Therefore, it cannot be used for substitution; | |
473 | but it can be used for cse. */ | |
474 | REG_EQUAL, | |
475 | ||
476 | /* The register set in this insn held 0 before the insn. The contents of | |
477 | the note is the insn that stored the 0. If that insn is deleted or | |
478 | patched to a NOTE, the REG_WAS_0 is inoperative. The REG_WAS_0 note | |
479 | is actually an INSN_LIST, not an EXPR_LIST. */ | |
480 | REG_WAS_0, | |
481 | ||
482 | /* This insn copies the return-value of a library call out of the hard reg | |
483 | for return values. This note is actually an INSN_LIST and it points to | |
484 | the first insn involved in setting up arguments for the call. flow.c | |
485 | uses this to delete the entire library call when its result is dead. */ | |
486 | REG_RETVAL, | |
487 | ||
488 | /* The inverse of REG_RETVAL: it goes on the first insn of the library call | |
be1bb652 RH |
489 | and points at the one that has the REG_RETVAL. This note is also an |
490 | INSN_LIST. */ | |
f590cca1 RH |
491 | REG_LIBCALL, |
492 | ||
493 | /* The register is always nonnegative during the containing loop. This is | |
494 | used in branches so that decrement and branch instructions terminating | |
495 | on zero can be matched. There must be an insn pattern in the md file | |
496 | named `decrement_and_branch_until_zero' or else this will never be added | |
497 | to any instructions. */ | |
498 | REG_NONNEG, | |
499 | ||
500 | /* There is no conflict *after this insn* between the register in the note | |
501 | and the destination of this insn. */ | |
502 | REG_NO_CONFLICT, | |
503 | ||
504 | /* Identifies a register set in this insn and never used. */ | |
505 | REG_UNUSED, | |
506 | ||
507 | /* REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use CC0, | |
508 | respectively. Normally, these are required to be consecutive insns, but | |
509 | we permit putting a cc0-setting insn in the delay slot of a branch as | |
510 | long as only one copy of the insn exists. In that case, these notes | |
511 | point from one to the other to allow code generation to determine what | |
be1bb652 RH |
512 | any require information and to properly update CC_STATUS. These notes |
513 | are INSN_LISTs. */ | |
f590cca1 RH |
514 | REG_CC_SETTER, REG_CC_USER, |
515 | ||
516 | /* Points to a CODE_LABEL. Used by non-JUMP_INSNs to say that the | |
be1bb652 RH |
517 | CODE_LABEL contained in the REG_LABEL note is used by the insn. |
518 | This note is an INSN_LIST. */ | |
f590cca1 RH |
519 | REG_LABEL, |
520 | ||
521 | /* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent | |
522 | write-after-read and write-after-write dependencies respectively. | |
523 | Data dependencies, which are the only type of LOG_LINK created by | |
524 | flow, are represented by a 0 reg note kind. */ | |
525 | REG_DEP_ANTI, REG_DEP_OUTPUT, | |
526 | ||
4db384c9 JH |
527 | /* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs. |
528 | It has an integer value. For jumps, it is the probability that this is a | |
529 | taken branch. For calls, it is the probability that this call won't | |
530 | return. */ | |
f590cca1 RH |
531 | REG_BR_PROB, |
532 | ||
533 | /* REG_EXEC_COUNT is attached to the first insn of each basic block, and | |
534 | the first insn after each CALL_INSN. It indicates how many times this | |
535 | block was executed. */ | |
536 | REG_EXEC_COUNT, | |
537 | ||
538 | /* Attached to a call insn; indicates that the call is malloc-like and | |
539 | that the pointer returned cannot alias anything else. */ | |
540 | REG_NOALIAS, | |
541 | ||
542 | /* Used to optimize rtl generated by dynamic stack allocations for targets | |
543 | where SETJMP_VIA_SAVE_AREA is true. */ | |
544 | REG_SAVE_AREA, | |
545 | ||
4db384c9 JH |
546 | /* REG_BR_PRED is attached to JUMP_INSNs and CALL_INSNSs. It contains |
547 | CONCAT of two integer value. First specifies the branch predictor | |
548 | that added the note, second specifies the predicted hitrate of branch | |
549 | in the same format as REG_BR_PROB note uses. */ | |
f590cca1 RH |
550 | REG_BR_PRED, |
551 | ||
552 | /* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex | |
553 | for DWARF to interpret what they imply. The attached rtx is used | |
554 | instead of intuition. */ | |
555 | REG_FRAME_RELATED_EXPR, | |
556 | ||
557 | /* Indicates that REG holds the exception context for the function. | |
558 | This context is shared by inline functions, so the code to acquire | |
559 | the real exception context is delayed until after inlining. */ | |
560 | REG_EH_CONTEXT, | |
561 | ||
562 | /* Indicates what exception region an INSN belongs in. This is used to | |
563 | indicate what region to which a call may throw. REGION 0 indicates | |
564 | that a call cannot throw at all. REGION -1 indicates that it cannot | |
565 | throw, nor will it execute a non-local goto. */ | |
566 | REG_EH_REGION, | |
567 | ||
f590cca1 | 568 | /* Used by haifa-sched to save NOTE_INSN notes across scheduling. */ |
8cd8f856 GK |
569 | REG_SAVE_NOTE, |
570 | ||
571 | /* Indicates that this insn (which is part of the prologue) computes | |
572 | a value which might not be used later, and if so it's OK to delete | |
573 | the insn. Normally, deleting any insn in the prologue is an error. | |
574 | At present the parameter is unused and set to (const_int 0). */ | |
ca3920ad JW |
575 | REG_MAYBE_DEAD, |
576 | ||
577 | /* Indicates that a call does not return. */ | |
4b01bd16 RH |
578 | REG_NORETURN, |
579 | ||
580 | /* Indicates that an indirect jump is a non-local goto instead of a | |
581 | computed goto. */ | |
570a98eb JH |
582 | REG_NON_LOCAL_GOTO, |
583 | ||
584 | /* This kind of note is generated at each to `setjmp', | |
585 | and similar functions that can return twice. */ | |
9d98f8f9 JH |
586 | REG_SETJMP, |
587 | ||
588 | /* Indicate calls that always returns. */ | |
4a8d0c9c RH |
589 | REG_ALWAYS_RETURN, |
590 | ||
591 | /* Indicate that the memory load references a vtable. The expression | |
592 | is of the form (plus (symbol_ref vtable_sym) (const_int offset)). */ | |
593 | REG_VTABLE_REF | |
f590cca1 RH |
594 | }; |
595 | ||
7ae21caf DE |
596 | /* The base value for branch probability notes. */ |
597 | #define REG_BR_PROB_BASE 10000 | |
6f29feb1 JW |
598 | |
599 | /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ | |
600 | #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) | |
f52eda29 GS |
601 | #define PUT_REG_NOTE_KIND(LINK, KIND) \ |
602 | PUT_MODE (LINK, (enum machine_mode) (KIND)) | |
6f29feb1 JW |
603 | |
604 | /* Names for REG_NOTE's in EXPR_LIST insn's. */ | |
605 | ||
1f9a015e | 606 | extern const char * const reg_note_name[]; |
0f41302f | 607 | #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) |
6f29feb1 | 608 | |
e51c6661 RK |
609 | /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of |
610 | USE and CLOBBER expressions. | |
611 | USE expressions list the registers filled with arguments that | |
612 | are passed to the function. | |
613 | CLOBBER expressions document the registers explicitly clobbered | |
614 | by this CALL_INSN. | |
615 | Pseudo registers can not be mentioned in this list. */ | |
8f985ec4 | 616 | #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7) |
e51c6661 | 617 | |
6f29feb1 JW |
618 | /* The label-number of a code-label. The assembler label |
619 | is made from `L' and the label-number printed in decimal. | |
620 | Label numbers are unique in a compilation. */ | |
f52eda29 | 621 | #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5) |
6f29feb1 JW |
622 | |
623 | #define LINE_NUMBER NOTE | |
624 | ||
0dfa1860 MM |
625 | /* In a NOTE that is a line number, this is a string for the file name that the |
626 | line is in. We use the same field to record block numbers temporarily in | |
627 | NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts | |
628 | between ints and pointers if we use a different macro for the block number.) | |
629 | The NOTE_INSN_RANGE_{START,END} and NOTE_INSN_LIVE notes record their | |
4fe9b91c | 630 | information as an rtx in the field. */ |
6f29feb1 | 631 | |
f52eda29 GS |
632 | #define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 3, NOTE) |
633 | #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE) | |
634 | #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE) | |
635 | #define NOTE_RANGE_INFO(INSN) XCEXP (INSN, 3, NOTE) | |
636 | #define NOTE_LIVE_INFO(INSN) XCEXP (INSN, 3, NOTE) | |
637 | #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE) | |
638 | #define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 3, NOTE) | |
0dfa1860 | 639 | |
6f29feb1 JW |
640 | /* In a NOTE that is a line number, this is the line number. |
641 | Other kinds of NOTEs are identified by negative numbers here. */ | |
f52eda29 | 642 | #define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 4, NOTE) |
6f29feb1 | 643 | |
589ca5cb MM |
644 | /* Nonzero if INSN is a note marking the beginning of a basic block. */ |
645 | #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ | |
646 | (GET_CODE (INSN) == NOTE \ | |
647 | && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK) | |
648 | ||
6f29feb1 | 649 | /* Codes that appear in the NOTE_LINE_NUMBER field |
a31efb86 | 650 | for kinds of notes that are not line numbers. |
6f29feb1 | 651 | |
a31efb86 DE |
652 | Notice that we do not try to use zero here for any of |
653 | the special note codes because sometimes the source line | |
654 | actually can be zero! This happens (for example) when we | |
655 | are generating code for the per-translation-unit constructor | |
656 | and destructor routines for some C++ translation unit. | |
657 | ||
658 | If you should change any of the following values, or if you | |
659 | should add a new value here, don't forget to change the | |
660 | note_insn_name array in rtl.c. */ | |
6f29feb1 | 661 | |
d636c18c RH |
662 | enum insn_note |
663 | { | |
664 | /* Keep all of these numbers negative. Adjust as needed. */ | |
665 | NOTE_INSN_BIAS = -100, | |
666 | ||
667 | /* This note is used to get rid of an insn | |
668 | when it isn't safe to patch the insn out of the chain. */ | |
669 | NOTE_INSN_DELETED, | |
670 | ||
671 | /* These are used to mark the beginning and end of a lexical block. | |
672 | See NOTE_BLOCK, identify_blocks and reorder_blocks. */ | |
673 | NOTE_INSN_BLOCK_BEG, | |
674 | NOTE_INSN_BLOCK_END, | |
675 | ||
676 | /* These mark the extremes of a loop. */ | |
677 | NOTE_INSN_LOOP_BEG, | |
678 | NOTE_INSN_LOOP_END, | |
679 | ||
680 | /* Generated at the place in a loop that `continue' jumps to. */ | |
681 | NOTE_INSN_LOOP_CONT, | |
682 | /* Generated at the start of a duplicated exit test. */ | |
683 | NOTE_INSN_LOOP_VTOP, | |
684 | ||
685 | /* This kind of note is generated at the end of the function body, | |
686 | just before the return insn or return label. In an optimizing | |
687 | compilation it is deleted by the first jump optimization, after | |
688 | enabling that optimizer to determine whether control can fall | |
689 | off the end of the function body without a return statement. */ | |
690 | NOTE_INSN_FUNCTION_END, | |
691 | ||
d636c18c RH |
692 | /* This marks the point immediately after the last prologue insn. */ |
693 | NOTE_INSN_PROLOGUE_END, | |
694 | ||
695 | /* This marks the point immediately prior to the first epilogue insn. */ | |
696 | NOTE_INSN_EPILOGUE_BEG, | |
697 | ||
698 | /* Generated in place of user-declared labels when they are deleted. */ | |
699 | NOTE_INSN_DELETED_LABEL, | |
700 | ||
701 | /* This note indicates the start of the real body of the function, | |
702 | i.e. the point just after all of the parms have been moved into | |
703 | their homes, etc. */ | |
704 | NOTE_INSN_FUNCTION_BEG, | |
705 | ||
706 | /* These note where exception handling regions begin and end. | |
707 | Uses NOTE_EH_HANDLER to identify the region in question. */ | |
708 | NOTE_INSN_EH_REGION_BEG, | |
709 | NOTE_INSN_EH_REGION_END, | |
710 | ||
711 | /* Generated whenever a duplicate line number note is output. For example, | |
712 | one is output after the end of an inline function, in order to prevent | |
eebedaa5 | 713 | the line containing the inline call from being counted twice in gcov. */ |
b3b42a4d | 714 | NOTE_INSN_REPEATED_LINE_NUMBER, |
d636c18c RH |
715 | |
716 | /* Start/end of a live range region, where pseudos allocated on the stack | |
717 | can be allocated to temporary registers. Uses NOTE_RANGE_INFO. */ | |
b3b42a4d | 718 | NOTE_INSN_RANGE_BEG, |
d636c18c RH |
719 | NOTE_INSN_RANGE_END, |
720 | ||
721 | /* Record which registers are currently live. Uses NOTE_LIVE_INFO. */ | |
722 | NOTE_INSN_LIVE, | |
723 | ||
eebedaa5 | 724 | /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */ |
d636c18c RH |
725 | NOTE_INSN_BASIC_BLOCK, |
726 | ||
994a57cd RH |
727 | /* Record the expected value of a register at a location. Uses |
728 | NOTE_EXPECTED_VALUE; stored as (eq (reg) (const_int)). */ | |
729 | NOTE_INSN_EXPECTED_VALUE, | |
730 | ||
d636c18c RH |
731 | NOTE_INSN_MAX |
732 | }; | |
10f07067 | 733 | |
6f29feb1 JW |
734 | /* Names for NOTE insn's other than line numbers. */ |
735 | ||
d636c18c RH |
736 | extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; |
737 | #define GET_NOTE_INSN_NAME(NOTE_CODE) \ | |
dbbbbf3b | 738 | (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS]) |
6f29feb1 JW |
739 | |
740 | /* The name of a label, in case it corresponds to an explicit label | |
741 | in the input source code. */ | |
f52eda29 | 742 | #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL) |
6f29feb1 JW |
743 | |
744 | /* In jump.c, each label contains a count of the number | |
745 | of LABEL_REFs that point at it, so unused labels can be deleted. */ | |
f52eda29 | 746 | #define LABEL_NUSES(RTX) XCINT (RTX, 3, CODE_LABEL) |
6f29feb1 | 747 | |
8cd0faaf | 748 | /* Associate a name with a CODE_LABEL. */ |
f52eda29 | 749 | #define LABEL_ALTERNATE_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) |
8cd0faaf | 750 | |
e9a25f70 | 751 | /* The original regno this ADDRESSOF was built for. */ |
f52eda29 | 752 | #define ADDRESSOF_REGNO(RTX) XCUINT (RTX, 1, ADDRESSOF) |
e9a25f70 JL |
753 | |
754 | /* The variable in the register we took the address of. */ | |
f52eda29 | 755 | #define ADDRESSOF_DECL(RTX) XCTREE (RTX, 2, ADDRESSOF) |
e9a25f70 | 756 | |
6f29feb1 JW |
757 | /* In jump.c, each JUMP_INSN can point to a label that it can jump to, |
758 | so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can | |
759 | be decremented and possibly the label can be deleted. */ | |
f52eda29 | 760 | #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN) |
6f29feb1 JW |
761 | |
762 | /* Once basic blocks are found in flow.c, | |
763 | each CODE_LABEL starts a chain that goes through | |
764 | all the LABEL_REFs that jump to that label. | |
be1bb652 | 765 | The chain eventually winds up at the CODE_LABEL: it is circular. */ |
f52eda29 | 766 | #define LABEL_REFS(LABEL) XCEXP (LABEL, 4, CODE_LABEL) |
6f29feb1 JW |
767 | \f |
768 | /* This is the field in the LABEL_REF through which the circular chain | |
769 | of references to a particular label is linked. | |
770 | This chain is set up in flow.c. */ | |
771 | ||
f52eda29 | 772 | #define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF) |
6f29feb1 JW |
773 | |
774 | /* Once basic blocks are found in flow.c, | |
775 | Each LABEL_REF points to its containing instruction with this field. */ | |
776 | ||
f52eda29 | 777 | #define CONTAINING_INSN(RTX) XCEXP (RTX, 2, LABEL_REF) |
6f29feb1 | 778 | |
08394eef BS |
779 | /* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds |
780 | the number the register originally had; for a pseudo register turned into | |
781 | a hard reg this will hold the old pseudo register number. */ | |
6f29feb1 | 782 | |
f52eda29 GS |
783 | #define REGNO(RTX) XCUINT (RTX, 0, REG) |
784 | #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) | |
6f29feb1 JW |
785 | |
786 | /* For a REG rtx, REG_FUNCTION_VALUE_P is nonzero if the reg | |
787 | is the current function's return value. */ | |
788 | ||
789 | #define REG_FUNCTION_VALUE_P(RTX) ((RTX)->integrated) | |
790 | ||
791 | /* 1 in a REG rtx if it corresponds to a variable declared by the user. */ | |
792 | #define REG_USERVAR_P(RTX) ((RTX)->volatil) | |
793 | ||
3502dc9c JDA |
794 | /* 1 in a REG rtx if the register is a pointer. */ |
795 | #define REG_POINTER(RTX) ((RTX)->frame_related) | |
796 | ||
cdbca172 JO |
797 | /* 1 if the given register REG corresponds to a hard register. */ |
798 | #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) | |
799 | ||
800 | /* 1 if the given register number REG_NO corresponds to a hard register. */ | |
f52eda29 | 801 | #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) |
cdbca172 | 802 | |
6f29feb1 JW |
803 | /* For a CONST_INT rtx, INTVAL extracts the integer. */ |
804 | ||
83ab3839 | 805 | #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) |
6f29feb1 | 806 | |
a36556a8 ZW |
807 | /* For a CONST_DOUBLE: |
808 | The usual two ints that hold the value. | |
809 | For a DImode, that is all there are; | |
810 | and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order. | |
811 | For a float, the number of ints varies, | |
812 | and CONST_DOUBLE_LOW is the one that should come first *in memory*. | |
813 | So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */ | |
a79e3a45 RK |
814 | #define CONST_DOUBLE_LOW(r) XCWINT (r, 1, CONST_DOUBLE) |
815 | #define CONST_DOUBLE_HIGH(r) XCWINT (r, 2, CONST_DOUBLE) | |
a36556a8 ZW |
816 | |
817 | /* Link for chain of all CONST_DOUBLEs in use in current function. */ | |
a79e3a45 | 818 | #define CONST_DOUBLE_CHAIN(r) XCEXP (r, 0, CONST_DOUBLE) |
a36556a8 | 819 | |
6f29feb1 | 820 | /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. |
ddef6bc7 | 821 | SUBREG_BYTE extracts the byte-number. */ |
6f29feb1 | 822 | |
f52eda29 GS |
823 | #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) |
824 | #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) | |
ddef6bc7 JJ |
825 | |
826 | /* in rtlanal.c */ | |
33aceff2 | 827 | extern unsigned int subreg_lsb PARAMS ((rtx)); |
ddef6bc7 JJ |
828 | extern unsigned int subreg_regno_offset PARAMS ((unsigned int, |
829 | enum machine_mode, | |
830 | unsigned int, | |
831 | enum machine_mode)); | |
832 | extern unsigned int subreg_regno PARAMS ((rtx)); | |
6f29feb1 | 833 | |
07be3989 RK |
834 | /* 1 if the REG contained in SUBREG_REG is already known to be |
835 | sign- or zero-extended from the mode of the SUBREG to the mode of | |
836 | the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the | |
f590cca1 | 837 | extension. |
07be3989 RK |
838 | |
839 | When used as a LHS, is means that this extension must be done | |
840 | when assigning to SUBREG_REG. */ | |
841 | ||
842 | #define SUBREG_PROMOTED_VAR_P(RTX) ((RTX)->in_struct) | |
843 | #define SUBREG_PROMOTED_UNSIGNED_P(RTX) ((RTX)->unchanging) | |
844 | ||
6f29feb1 JW |
845 | /* Access various components of an ASM_OPERANDS rtx. */ |
846 | ||
f52eda29 GS |
847 | #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) |
848 | #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) | |
849 | #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) | |
850 | #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) | |
851 | #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) | |
852 | #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) | |
853 | #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) | |
6462bb43 | 854 | #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ |
f52eda29 | 855 | XCVECEXP (RTX, 4, N, ASM_OPERANDS) |
3bdf5ad1 | 856 | #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ |
f52eda29 | 857 | XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) |
3bdf5ad1 | 858 | #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ |
f52eda29 GS |
859 | GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) |
860 | #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS) | |
861 | #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS) | |
6f29feb1 | 862 | |
10b76d73 RK |
863 | /* For a MEM RTX, 1 if we should keep the alias set for this mem |
864 | unchanged when we access a component. Set to 1, or example, when we | |
865 | are already in a non-addressable component of an aggregate. */ | |
866 | #define MEM_KEEP_ALIAS_SET_P(RTX) ((RTX)->jump) | |
867 | ||
6f29feb1 JW |
868 | /* For a MEM rtx, 1 if it's a volatile reference. |
869 | Also in an ASM_OPERANDS rtx. */ | |
870 | #define MEM_VOLATILE_P(RTX) ((RTX)->volatil) | |
871 | ||
3bdf5ad1 RK |
872 | /* For a MEM rtx, 1 if it refers to an aggregate, either to the |
873 | aggregate itself of to a field of the aggregate. If zero, RTX may | |
4eb00163 | 874 | or may not be such a reference. */ |
6f29feb1 JW |
875 | #define MEM_IN_STRUCT_P(RTX) ((RTX)->in_struct) |
876 | ||
c6df88cb | 877 | /* For a MEM rtx, 1 if it refers to a scalar. If zero, RTX may or may |
3ef42a0c | 878 | not refer to a scalar. */ |
c6df88cb MM |
879 | #define MEM_SCALAR_P(RTX) ((RTX)->frame_related) |
880 | ||
c6df88cb MM |
881 | /* If VAL is non-zero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in |
882 | RTX. Otherwise, vice versa. Use this macro only when you are | |
883 | *sure* that you know that the MEM is in a structure, or is a | |
884 | scalar. VAL is evaluated only once. */ | |
f52eda29 GS |
885 | #define MEM_SET_IN_STRUCT_P(RTX, VAL) \ |
886 | do { \ | |
f9e158c3 JM |
887 | if (VAL) \ |
888 | { \ | |
889 | MEM_IN_STRUCT_P (RTX) = 1; \ | |
890 | MEM_SCALAR_P (RTX) = 0; \ | |
891 | } \ | |
892 | else \ | |
893 | { \ | |
894 | MEM_IN_STRUCT_P (RTX) = 0; \ | |
895 | MEM_SCALAR_P (RTX) = 1; \ | |
896 | } \ | |
897 | } while (0) | |
c6df88cb | 898 | |
173b24b9 RK |
899 | /* The memory attribute block. We provide access macros for each value |
900 | in the block and provide defaults if none specified. */ | |
901 | #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) | |
902 | ||
41472af8 MM |
903 | /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias |
904 | set, and may alias anything. Otherwise, the MEM can only alias | |
905 | MEMs in the same alias set. This value is set in a | |
906 | language-dependent manner in the front-end, and should not be | |
907 | altered in the back-end. These set numbers are tested for zero, | |
908 | and compared for equality; they have no other significance. In | |
909 | some front-ends, these numbers may correspond in some way to types, | |
910 | or other language-level entities, but they need not, and the | |
911 | back-end makes no such assumptions. */ | |
173b24b9 RK |
912 | #define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias) |
913 | ||
914 | /* For a MEM rtx, the decl it is known to refer to, if it is known to | |
998d7deb RH |
915 | refer to part of a DECL. It may also be a COMPONENT_REF. */ |
916 | #define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr) | |
173b24b9 | 917 | |
998d7deb | 918 | /* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a |
173b24b9 RK |
919 | RTX that is always a CONST_INT. */ |
920 | #define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset) | |
921 | ||
922 | /* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that | |
923 | is always a CONST_INT. */ | |
10b76d73 RK |
924 | #define MEM_SIZE(RTX) \ |
925 | (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ | |
926 | : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ | |
927 | : 0) | |
173b24b9 | 928 | |
917afb0c RK |
929 | /* For a MEM rtx, the alignment in bits. We can use the alignment of the |
930 | mode as a default when STRICT_ALIGNMENT, but not if not. */ | |
8ac61af7 RK |
931 | #define MEM_ALIGN(RTX) \ |
932 | (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \ | |
917afb0c RK |
933 | : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \ |
934 | ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT)) | |
3bdf5ad1 RK |
935 | |
936 | /* Copy the attributes that apply to memory locations from RHS to LHS. */ | |
10b76d73 RK |
937 | #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ |
938 | (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ | |
939 | MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ | |
940 | MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ | |
941 | RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \ | |
942 | MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ | |
173b24b9 | 943 | MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) |
41472af8 | 944 | |
6f29feb1 JW |
945 | /* For a LABEL_REF, 1 means that this reference is to a label outside the |
946 | loop containing the reference. */ | |
947 | #define LABEL_OUTSIDE_LOOP_P(RTX) ((RTX)->in_struct) | |
948 | ||
adfaf10a | 949 | /* For a LABEL_REF, 1 means it is for a nonlocal label. */ |
2a406d2a | 950 | /* Likewise in an EXPR_LIST for a REG_LABEL note. */ |
adfaf10a RS |
951 | #define LABEL_REF_NONLOCAL_P(RTX) ((RTX)->volatil) |
952 | ||
6f29feb1 JW |
953 | /* For a CODE_LABEL, 1 means always consider this label to be needed. */ |
954 | #define LABEL_PRESERVE_P(RTX) ((RTX)->in_struct) | |
955 | ||
956 | /* For a REG, 1 means the register is used only in an exit test of a loop. */ | |
957 | #define REG_LOOP_TEST_P(RTX) ((RTX)->in_struct) | |
958 | ||
959 | /* During sched, for an insn, 1 means that the insn must be scheduled together | |
d45cf215 | 960 | with the preceding insn. */ |
6f29feb1 JW |
961 | #define SCHED_GROUP_P(INSN) ((INSN)->in_struct) |
962 | ||
b8ec5764 VM |
963 | /* During sched, for the LOG_LINKS of an insn, these cache the adjusted |
964 | cost of the dependence link. The cost of executing an instruction | |
965 | may vary based on how the results are used. LINK_COST_ZERO is 1 when | |
966 | the cost through the link varies and is unchanged (i.e., the link has | |
967 | zero additional cost). LINK_COST_FREE is 1 when the cost through the | |
968 | link is zero (i.e., the link makes the cost free). In other cases, | |
969 | the adjustment to the cost is recomputed each time it is needed. */ | |
970 | #define LINK_COST_ZERO(X) ((X)->jump) | |
971 | #define LINK_COST_FREE(X) ((X)->call) | |
972 | ||
6f29feb1 JW |
973 | /* For a SET rtx, SET_DEST is the place that is set |
974 | and SET_SRC is the value it is set to. */ | |
83ab3839 RH |
975 | #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) |
976 | #define SET_SRC(RTX) XCEXP(RTX, 1, SET) | |
3258e996 | 977 | #define SET_IS_RETURN_P(RTX) ((RTX)->jump) |
6f29feb1 JW |
978 | |
979 | /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ | |
f52eda29 GS |
980 | #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) |
981 | #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) | |
6f29feb1 | 982 | |
0c99ec5c RH |
983 | /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base |
984 | conditionally executing the code on, COND_EXEC_CODE is the code | |
985 | to execute if the condition is true. */ | |
f52eda29 GS |
986 | #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) |
987 | #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) | |
0c99ec5c | 988 | |
6f29feb1 JW |
989 | /* 1 in a SYMBOL_REF if it addresses this function's constants pool. */ |
990 | #define CONSTANT_POOL_ADDRESS_P(RTX) ((RTX)->unchanging) | |
991 | ||
bd7cf17e JJ |
992 | /* 1 in a SYMBOL_REF if it addresses this function's string constant pool. */ |
993 | #define STRING_POOL_ADDRESS_P(RTX) ((RTX)->frame_related) | |
994 | ||
6f29feb1 JW |
995 | /* Flag in a SYMBOL_REF for machine-specific purposes. */ |
996 | #define SYMBOL_REF_FLAG(RTX) ((RTX)->volatil) | |
997 | ||
998 | /* 1 means a SYMBOL_REF has been the library function in emit_library_call. */ | |
999 | #define SYMBOL_REF_USED(RTX) ((RTX)->used) | |
1000 | ||
ff0b6b99 FS |
1001 | /* 1 means a SYMBOL_REF is weak. */ |
1002 | #define SYMBOL_REF_WEAK(RTX) ((RTX)->integrated) | |
1003 | ||
6f29feb1 JW |
1004 | /* Define a macro to look for REG_INC notes, |
1005 | but save time on machines where they never exist. */ | |
1006 | ||
58e54c44 RS |
1007 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
1008 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
f52eda29 GS |
1009 | #define FIND_REG_INC_NOTE(INSN, REG) \ |
1010 | ((REG) != NULL_RTX && REG_P ((REG)) \ | |
1011 | ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ | |
1012 | : find_reg_note ((INSN), REG_INC, (REG))) | |
6f29feb1 | 1013 | #else |
f52eda29 | 1014 | #define FIND_REG_INC_NOTE(INSN, REG) 0 |
6f29feb1 JW |
1015 | #endif |
1016 | ||
1017 | /* Indicate whether the machine has any sort of auto increment addressing. | |
1018 | If not, we can avoid checking for REG_INC notes. */ | |
1019 | ||
58e54c44 RS |
1020 | /* Don't continue this line--convex cc version 4.1 would lose. */ |
1021 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) | |
6f29feb1 JW |
1022 | #define AUTO_INC_DEC |
1023 | #endif | |
0dfa1860 | 1024 | |
940da324 JL |
1025 | #ifndef HAVE_PRE_INCREMENT |
1026 | #define HAVE_PRE_INCREMENT 0 | |
1027 | #endif | |
1028 | ||
1029 | #ifndef HAVE_PRE_DECREMENT | |
1030 | #define HAVE_PRE_DECREMENT 0 | |
1031 | #endif | |
1032 | ||
1033 | #ifndef HAVE_POST_INCREMENT | |
1034 | #define HAVE_POST_INCREMENT 0 | |
1035 | #endif | |
1036 | ||
1037 | #ifndef HAVE_POST_DECREMENT | |
1038 | #define HAVE_POST_DECREMENT 0 | |
1039 | #endif | |
1040 | ||
4b983fdc RH |
1041 | #ifndef HAVE_POST_MODIFY_DISP |
1042 | #define HAVE_POST_MODIFY_DISP 0 | |
1043 | #endif | |
1044 | ||
1045 | #ifndef HAVE_POST_MODIFY_REG | |
1046 | #define HAVE_POST_MODIFY_REG 0 | |
1047 | #endif | |
1048 | ||
1049 | #ifndef HAVE_PRE_MODIFY_DISP | |
1050 | #define HAVE_PRE_MODIFY_DISP 0 | |
1051 | #endif | |
1052 | ||
1053 | #ifndef HAVE_PRE_MODIFY_REG | |
1054 | #define HAVE_PRE_MODIFY_REG 0 | |
1055 | #endif | |
1056 | ||
6e01bd94 MH |
1057 | |
1058 | /* Some architectures do not have complete pre/post increment/decrement | |
1059 | instruction sets, or only move some modes efficiently. These macros | |
1060 | allow us to tune autoincrement generation. */ | |
1061 | ||
1062 | #ifndef USE_LOAD_POST_INCREMENT | |
1063 | #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1064 | #endif | |
1065 | ||
1066 | #ifndef USE_LOAD_POST_DECREMENT | |
1067 | #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1068 | #endif | |
1069 | ||
1070 | #ifndef USE_LOAD_PRE_INCREMENT | |
1071 | #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1072 | #endif | |
1073 | ||
1074 | #ifndef USE_LOAD_PRE_DECREMENT | |
1075 | #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1076 | #endif | |
1077 | ||
1078 | #ifndef USE_STORE_POST_INCREMENT | |
1079 | #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1080 | #endif | |
1081 | ||
1082 | #ifndef USE_STORE_POST_DECREMENT | |
1083 | #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1084 | #endif | |
1085 | ||
1086 | #ifndef USE_STORE_PRE_INCREMENT | |
1087 | #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1088 | #endif | |
1089 | ||
1090 | #ifndef USE_STORE_PRE_DECREMENT | |
1091 | #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1092 | #endif | |
1093 | ||
1094 | ||
0dfa1860 MM |
1095 | /* Accessors for RANGE_INFO. */ |
1096 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 1097 | #define RANGE_INFO_NOTE_START(INSN) XCEXP (INSN, 0, RANGE_INFO) |
0dfa1860 MM |
1098 | |
1099 | /* For RANGE_{START,END} notes return the RANGE_START note. */ | |
83ab3839 | 1100 | #define RANGE_INFO_NOTE_END(INSN) XCEXP (INSN, 1, RANGE_INFO) |
0dfa1860 MM |
1101 | |
1102 | /* For RANGE_{START,END} notes, return the vector containing the registers used | |
1103 | in the range. */ | |
83ab3839 RH |
1104 | #define RANGE_INFO_REGS(INSN) XCVEC (INSN, 2, RANGE_INFO) |
1105 | #define RANGE_INFO_REGS_REG(INSN, N) XCVECEXP (INSN, 2, N, RANGE_INFO) | |
1106 | #define RANGE_INFO_NUM_REGS(INSN) XCVECLEN (INSN, 2, RANGE_INFO) | |
0dfa1860 MM |
1107 | |
1108 | /* For RANGE_{START,END} notes, the number of calls within the range. */ | |
83ab3839 | 1109 | #define RANGE_INFO_NCALLS(INSN) XCINT (INSN, 3, RANGE_INFO) |
0dfa1860 MM |
1110 | |
1111 | /* For RANGE_{START,END} notes, the number of insns within the range. */ | |
83ab3839 | 1112 | #define RANGE_INFO_NINSNS(INSN) XCINT (INSN, 4, RANGE_INFO) |
0dfa1860 MM |
1113 | |
1114 | /* For RANGE_{START,END} notes, a unique # to identify this range. */ | |
83ab3839 | 1115 | #define RANGE_INFO_UNIQUE(INSN) XCINT (INSN, 5, RANGE_INFO) |
0dfa1860 | 1116 | |
eebedaa5 | 1117 | /* For RANGE_{START,END} notes, the basic block # the range starts with. */ |
83ab3839 | 1118 | #define RANGE_INFO_BB_START(INSN) XCINT (INSN, 6, RANGE_INFO) |
0dfa1860 | 1119 | |
eebedaa5 | 1120 | /* For RANGE_{START,END} notes, the basic block # the range ends with. */ |
83ab3839 | 1121 | #define RANGE_INFO_BB_END(INSN) XCINT (INSN, 7, RANGE_INFO) |
0dfa1860 MM |
1122 | |
1123 | /* For RANGE_{START,END} notes, the loop depth the range is in. */ | |
83ab3839 | 1124 | #define RANGE_INFO_LOOP_DEPTH(INSN) XCINT (INSN, 8, RANGE_INFO) |
0dfa1860 MM |
1125 | |
1126 | /* For RANGE_{START,END} notes, the bitmap of live registers at the start | |
1127 | of the range. */ | |
83ab3839 | 1128 | #define RANGE_INFO_LIVE_START(INSN) XCBITMAP (INSN, 9, RANGE_INFO) |
0dfa1860 MM |
1129 | |
1130 | /* For RANGE_{START,END} notes, the bitmap of live registers at the end | |
1131 | of the range. */ | |
83ab3839 | 1132 | #define RANGE_INFO_LIVE_END(INSN) XCBITMAP (INSN, 10, RANGE_INFO) |
0dfa1860 MM |
1133 | |
1134 | /* For RANGE_START notes, the marker # of the start of the range. */ | |
83ab3839 | 1135 | #define RANGE_INFO_MARKER_START(INSN) XCINT (INSN, 11, RANGE_INFO) |
0dfa1860 MM |
1136 | |
1137 | /* For RANGE_START notes, the marker # of the end of the range. */ | |
83ab3839 | 1138 | #define RANGE_INFO_MARKER_END(INSN) XCINT (INSN, 12, RANGE_INFO) |
0dfa1860 MM |
1139 | |
1140 | /* Original pseudo register # for a live range note. */ | |
83ab3839 | 1141 | #define RANGE_REG_PSEUDO(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 0, REG) |
0dfa1860 MM |
1142 | |
1143 | /* Pseudo register # original register is copied into or -1. */ | |
83ab3839 | 1144 | #define RANGE_REG_COPY(INSN,N) XCINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 1, REG) |
0dfa1860 MM |
1145 | |
1146 | /* How many times a register in a live range note was referenced. */ | |
83ab3839 | 1147 | #define RANGE_REG_REFS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 2) |
0dfa1860 MM |
1148 | |
1149 | /* How many times a register in a live range note was set. */ | |
83ab3839 | 1150 | #define RANGE_REG_SETS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 3) |
0dfa1860 MM |
1151 | |
1152 | /* How many times a register in a live range note died. */ | |
83ab3839 | 1153 | #define RANGE_REG_DEATHS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 4) |
0dfa1860 MM |
1154 | |
1155 | /* Whether the original value is needed to be copied into the range register at | |
eebedaa5 | 1156 | the start of the range. */ |
83ab3839 | 1157 | #define RANGE_REG_COPY_FLAGS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 5) |
0dfa1860 MM |
1158 | |
1159 | /* # of insns the register copy is live over. */ | |
83ab3839 | 1160 | #define RANGE_REG_LIVE_LENGTH(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 6) |
0dfa1860 MM |
1161 | |
1162 | /* # of calls the register copy is live over. */ | |
83ab3839 | 1163 | #define RANGE_REG_N_CALLS(INSN,N) XINT (XCVECEXP (INSN, 2, N, RANGE_INFO), 7) |
0dfa1860 MM |
1164 | |
1165 | /* DECL_NODE pointer of the declaration if the register is a user defined | |
1166 | variable. */ | |
83ab3839 | 1167 | #define RANGE_REG_SYMBOL_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 8) |
0dfa1860 MM |
1168 | |
1169 | /* BLOCK_NODE pointer to the block the variable is declared in if the | |
1170 | register is a user defined variable. */ | |
83ab3839 | 1171 | #define RANGE_REG_BLOCK_NODE(INSN,N) XTREE (XCVECEXP (INSN, 2, N, RANGE_INFO), 9) |
0dfa1860 MM |
1172 | |
1173 | /* EXPR_LIST of the distinct ranges a variable is in. */ | |
1174 | #define RANGE_VAR_LIST(INSN) (XEXP (INSN, 0)) | |
1175 | ||
1176 | /* Block a variable is declared in. */ | |
1177 | #define RANGE_VAR_BLOCK(INSN) (XTREE (INSN, 1)) | |
1178 | ||
1179 | /* # of distinct ranges a variable is in. */ | |
1180 | #define RANGE_VAR_NUM(INSN) (XINT (INSN, 2)) | |
1181 | ||
1182 | /* For a NOTE_INSN_LIVE note, the registers which are currently live. */ | |
1183 | #define RANGE_LIVE_BITMAP(INSN) (XBITMAP (INSN, 0)) | |
1184 | ||
1185 | /* For a NOTE_INSN_LIVE note, the original basic block number. */ | |
1186 | #define RANGE_LIVE_ORIG_BLOCK(INSN) (XINT (INSN, 1)) | |
4e872036 AS |
1187 | |
1188 | /* Determine if the insn is a PHI node. */ | |
1189 | #define PHI_NODE_P(X) \ | |
f52eda29 | 1190 | ((X) && GET_CODE (X) == INSN \ |
4e872036 AS |
1191 | && GET_CODE (PATTERN (X)) == SET \ |
1192 | && GET_CODE (SET_SRC (PATTERN (X))) == PHI) | |
6f29feb1 | 1193 | \f |
bf6bb899 BS |
1194 | /* Nonzero if we need to distinguish between the return value of this function |
1195 | and the return value of a function called by this function. This helps | |
1196 | integrate.c. | |
1197 | This is 1 until after the rtl generation pass. */ | |
1198 | extern int rtx_equal_function_value_matters; | |
1199 | ||
1b3d8f8a GK |
1200 | /* Nonzero when we are generating CONCATs. */ |
1201 | extern int generating_concat_p; | |
1202 | ||
6f29feb1 JW |
1203 | /* Generally useful functions. */ |
1204 | ||
ac957f13 | 1205 | /* In expmed.c */ |
cdadb1dd | 1206 | extern int ceil_log2 PARAMS ((unsigned HOST_WIDE_INT)); |
5f4f0e22 | 1207 | |
f52eda29 | 1208 | #define plus_constant(X, C) plus_constant_wide ((X), (HOST_WIDE_INT) (C)) |
5f4f0e22 | 1209 | |
5f2d6cfa | 1210 | /* In builtins.c */ |
2f78c311 | 1211 | extern rtx expand_builtin_expect_jump PARAMS ((tree, rtx, rtx)); |
5f2d6cfa | 1212 | |
50b2596f | 1213 | /* In explow.c */ |
c6991660 | 1214 | extern void set_stack_check_libfunc PARAMS ((rtx)); |
cdadb1dd | 1215 | extern HOST_WIDE_INT trunc_int_for_mode PARAMS ((HOST_WIDE_INT, |
7e4ce834 | 1216 | enum machine_mode)); |
cdadb1dd KG |
1217 | extern rtx plus_constant_wide PARAMS ((rtx, HOST_WIDE_INT)); |
1218 | extern rtx plus_constant_for_output_wide PARAMS ((rtx, HOST_WIDE_INT)); | |
1219 | extern void optimize_save_area_alloca PARAMS ((rtx)); | |
5f4f0e22 | 1220 | |
4eb00163 | 1221 | /* In emit-rtl.c */ |
cdadb1dd | 1222 | extern rtx gen_rtx PARAMS ((enum rtx_code, |
bdea67fa | 1223 | enum machine_mode, ...)); |
cdadb1dd | 1224 | extern rtvec gen_rtvec PARAMS ((int, ...)); |
cdadb1dd KG |
1225 | extern rtx copy_insn_1 PARAMS ((rtx)); |
1226 | extern rtx copy_insn PARAMS ((rtx)); | |
4eb00163 JO |
1227 | |
1228 | /* In rtl.c */ | |
5fe2e41b GK |
1229 | extern rtx rtx_alloc PARAMS ((RTX_CODE)); |
1230 | extern rtvec rtvec_alloc PARAMS ((int)); | |
cdadb1dd | 1231 | extern rtx copy_rtx PARAMS ((rtx)); |
4eb00163 JO |
1232 | |
1233 | /* In emit-rtl.c */ | |
cdadb1dd | 1234 | extern rtx copy_rtx_if_shared PARAMS ((rtx)); |
4eb00163 JO |
1235 | |
1236 | /* In rtl.c */ | |
cdadb1dd KG |
1237 | extern rtx copy_most_rtx PARAMS ((rtx, rtx)); |
1238 | extern rtx shallow_copy_rtx PARAMS ((rtx)); | |
1239 | extern int rtx_equal_p PARAMS ((rtx, rtx)); | |
4eb00163 JO |
1240 | |
1241 | /* In emit-rtl.c */ | |
cdadb1dd KG |
1242 | extern rtvec gen_rtvec_v PARAMS ((int, rtx *)); |
1243 | extern rtx gen_reg_rtx PARAMS ((enum machine_mode)); | |
1244 | extern rtx gen_label_rtx PARAMS ((void)); | |
ddef6bc7 | 1245 | extern int subreg_hard_regno PARAMS ((rtx, int)); |
cdadb1dd KG |
1246 | extern rtx gen_lowpart_common PARAMS ((enum machine_mode, rtx)); |
1247 | extern rtx gen_lowpart PARAMS ((enum machine_mode, rtx)); | |
4eb00163 JO |
1248 | |
1249 | /* In cse.c */ | |
cdadb1dd | 1250 | extern rtx gen_lowpart_if_possible PARAMS ((enum machine_mode, rtx)); |
4eb00163 JO |
1251 | |
1252 | /* In emit-rtl.c */ | |
cdadb1dd | 1253 | extern rtx gen_highpart PARAMS ((enum machine_mode, rtx)); |
5222e470 JH |
1254 | extern rtx gen_highpart_mode PARAMS ((enum machine_mode, |
1255 | enum machine_mode, rtx)); | |
cdadb1dd KG |
1256 | extern rtx gen_realpart PARAMS ((enum machine_mode, rtx)); |
1257 | extern rtx gen_imagpart PARAMS ((enum machine_mode, rtx)); | |
770ae6cc RK |
1258 | extern rtx operand_subword PARAMS ((rtx, unsigned int, int, |
1259 | enum machine_mode)); | |
ddef6bc7 JJ |
1260 | extern rtx constant_subword PARAMS ((rtx, int, |
1261 | enum machine_mode)); | |
4eb00163 JO |
1262 | |
1263 | /* In emit-rtl.c */ | |
770ae6cc RK |
1264 | extern rtx operand_subword_force PARAMS ((rtx, unsigned int, |
1265 | enum machine_mode)); | |
cdadb1dd | 1266 | extern int subreg_lowpart_p PARAMS ((rtx)); |
e0e08ac2 JH |
1267 | extern unsigned int subreg_lowpart_offset PARAMS ((enum machine_mode, |
1268 | enum machine_mode)); | |
1269 | extern unsigned int subreg_highpart_offset PARAMS ((enum machine_mode, | |
1270 | enum machine_mode)); | |
cdadb1dd KG |
1271 | extern rtx make_safe_from PARAMS ((rtx, rtx)); |
1272 | extern rtx convert_memory_address PARAMS ((enum machine_mode, rtx)); | |
cdadb1dd KG |
1273 | extern rtx get_insns PARAMS ((void)); |
1274 | extern const char *get_insn_name PARAMS ((int)); | |
1275 | extern rtx get_last_insn PARAMS ((void)); | |
1276 | extern rtx get_last_insn_anywhere PARAMS ((void)); | |
1277 | extern void start_sequence PARAMS ((void)); | |
1278 | extern void push_to_sequence PARAMS ((rtx)); | |
1279 | extern void end_sequence PARAMS ((void)); | |
c14f7160 ML |
1280 | extern void push_to_full_sequence PARAMS ((rtx, rtx)); |
1281 | extern void end_full_sequence PARAMS ((rtx*, rtx*)); | |
cdadb1dd | 1282 | extern rtx gen_sequence PARAMS ((void)); |
4eb00163 JO |
1283 | |
1284 | /* In varasm.c */ | |
cdadb1dd | 1285 | extern rtx immed_double_const PARAMS ((HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode)); |
03f54026 | 1286 | extern rtx mem_for_const_double PARAMS ((rtx)); |
cdadb1dd | 1287 | extern rtx force_const_mem PARAMS ((enum machine_mode, rtx)); |
4eb00163 | 1288 | |
4eb00163 | 1289 | /* In varasm.c */ |
cdadb1dd KG |
1290 | extern rtx get_pool_constant PARAMS ((rtx)); |
1291 | extern enum machine_mode get_pool_mode PARAMS ((rtx)); | |
1292 | extern rtx get_pool_constant_for_function PARAMS ((struct function *, rtx)); | |
1293 | extern enum machine_mode get_pool_mode_for_function PARAMS ((struct function *, rtx)); | |
1294 | extern int get_pool_offset PARAMS ((rtx)); | |
1295 | extern rtx simplify_subtraction PARAMS ((rtx)); | |
4eb00163 JO |
1296 | |
1297 | /* In function.c */ | |
cdadb1dd | 1298 | extern rtx assign_stack_local PARAMS ((enum machine_mode, |
e5e809f4 | 1299 | HOST_WIDE_INT, int)); |
cdadb1dd | 1300 | extern rtx assign_stack_temp PARAMS ((enum machine_mode, |
e5e809f4 | 1301 | HOST_WIDE_INT, int)); |
a06ef755 RK |
1302 | extern rtx assign_stack_temp_for_type PARAMS ((enum machine_mode, |
1303 | HOST_WIDE_INT, int, tree)); | |
2f78c311 | 1304 | extern rtx assign_temp PARAMS ((tree, int, int, int)); |
4eb00163 | 1305 | /* In emit-rtl.c */ |
cdadb1dd KG |
1306 | extern rtx emit_insn_before PARAMS ((rtx, rtx)); |
1307 | extern rtx emit_jump_insn_before PARAMS ((rtx, rtx)); | |
1308 | extern rtx emit_call_insn_before PARAMS ((rtx, rtx)); | |
1309 | extern rtx emit_barrier_before PARAMS ((rtx)); | |
1310 | extern rtx emit_label_before PARAMS ((rtx, rtx)); | |
1311 | extern rtx emit_note_before PARAMS ((int, rtx)); | |
1312 | extern rtx emit_insn_after PARAMS ((rtx, rtx)); | |
1313 | extern rtx emit_jump_insn_after PARAMS ((rtx, rtx)); | |
1314 | extern rtx emit_barrier_after PARAMS ((rtx)); | |
1315 | extern rtx emit_label_after PARAMS ((rtx, rtx)); | |
1316 | extern rtx emit_note_after PARAMS ((int, rtx)); | |
3cce094d | 1317 | extern rtx emit_line_note_after PARAMS ((const char *, int, rtx)); |
cdadb1dd KG |
1318 | extern rtx emit_insn PARAMS ((rtx)); |
1319 | extern rtx emit_insns PARAMS ((rtx)); | |
1320 | extern rtx emit_insns_before PARAMS ((rtx, rtx)); | |
1321 | extern rtx emit_insns_after PARAMS ((rtx, rtx)); | |
1322 | extern rtx emit_jump_insn PARAMS ((rtx)); | |
1323 | extern rtx emit_call_insn PARAMS ((rtx)); | |
1324 | extern rtx emit_label PARAMS ((rtx)); | |
1325 | extern rtx emit_barrier PARAMS ((void)); | |
3cce094d KG |
1326 | extern rtx emit_line_note PARAMS ((const char *, int)); |
1327 | extern rtx emit_note PARAMS ((const char *, int)); | |
1328 | extern rtx emit_line_note_force PARAMS ((const char *, int)); | |
cdadb1dd KG |
1329 | extern rtx make_insn_raw PARAMS ((rtx)); |
1330 | extern rtx previous_insn PARAMS ((rtx)); | |
1331 | extern rtx next_insn PARAMS ((rtx)); | |
1332 | extern rtx prev_nonnote_insn PARAMS ((rtx)); | |
1333 | extern rtx next_nonnote_insn PARAMS ((rtx)); | |
1334 | extern rtx prev_real_insn PARAMS ((rtx)); | |
1335 | extern rtx next_real_insn PARAMS ((rtx)); | |
1336 | extern rtx prev_active_insn PARAMS ((rtx)); | |
1337 | extern rtx next_active_insn PARAMS ((rtx)); | |
69732dcb | 1338 | extern int active_insn_p PARAMS ((rtx)); |
cdadb1dd KG |
1339 | extern rtx prev_label PARAMS ((rtx)); |
1340 | extern rtx next_label PARAMS ((rtx)); | |
1341 | extern rtx next_cc0_user PARAMS ((rtx)); | |
1342 | extern rtx prev_cc0_setter PARAMS ((rtx)); | |
4eb00163 JO |
1343 | |
1344 | /* In jump.c */ | |
cdadb1dd KG |
1345 | extern rtx next_nondeleted_insn PARAMS ((rtx)); |
1346 | extern enum rtx_code reverse_condition PARAMS ((enum rtx_code)); | |
7913f3d0 | 1347 | extern enum rtx_code reverse_condition_maybe_unordered PARAMS ((enum rtx_code)); |
cdadb1dd KG |
1348 | extern enum rtx_code swap_condition PARAMS ((enum rtx_code)); |
1349 | extern enum rtx_code unsigned_condition PARAMS ((enum rtx_code)); | |
1350 | extern enum rtx_code signed_condition PARAMS ((enum rtx_code)); | |
1e5fd094 | 1351 | extern void mark_jump_label PARAMS ((rtx, rtx, int)); |
01f62f01 | 1352 | extern void cleanup_barriers PARAMS ((void)); |
4eb00163 | 1353 | |
4eb00163 | 1354 | /* In jump.c */ |
2b7d71b2 | 1355 | extern bool squeeze_notes PARAMS ((rtx *, rtx *)); |
53c17031 | 1356 | extern rtx delete_related_insns PARAMS ((rtx)); |
cdadb1dd KG |
1357 | extern void delete_jump PARAMS ((rtx)); |
1358 | extern void delete_barrier PARAMS ((rtx)); | |
1359 | extern rtx get_label_before PARAMS ((rtx)); | |
1360 | extern rtx get_label_after PARAMS ((rtx)); | |
1361 | extern rtx follow_jumps PARAMS ((rtx)); | |
4eb00163 JO |
1362 | |
1363 | /* In recog.c */ | |
b72f00af | 1364 | extern rtx *find_constant_term_loc PARAMS ((rtx *)); |
4eb00163 JO |
1365 | |
1366 | /* In emit-rtl.c */ | |
cdadb1dd | 1367 | extern rtx try_split PARAMS ((rtx, rtx, int)); |
6b24c259 | 1368 | extern int split_branch_probability; |
4eb00163 JO |
1369 | |
1370 | /* In unknown file */ | |
cdadb1dd | 1371 | extern rtx split_insns PARAMS ((rtx, rtx)); |
4eb00163 JO |
1372 | |
1373 | /* In simplify-rtx.c */ | |
d9c695ff RK |
1374 | extern rtx simplify_unary_operation PARAMS ((enum rtx_code, |
1375 | enum machine_mode, rtx, | |
1376 | enum machine_mode)); | |
1377 | extern rtx simplify_binary_operation PARAMS ((enum rtx_code, | |
1378 | enum machine_mode, rtx, | |
1379 | rtx)); | |
1380 | extern rtx simplify_ternary_operation PARAMS ((enum rtx_code, | |
1381 | enum machine_mode, | |
1382 | enum machine_mode, rtx, rtx, | |
1383 | rtx)); | |
1384 | extern rtx simplify_relational_operation PARAMS ((enum rtx_code, | |
1385 | enum machine_mode, rtx, | |
1386 | rtx)); | |
1387 | extern rtx simplify_gen_binary PARAMS ((enum rtx_code, | |
1388 | enum machine_mode, | |
1389 | rtx, rtx)); | |
1390 | extern rtx simplify_gen_unary PARAMS ((enum rtx_code, | |
1391 | enum machine_mode, rtx, | |
1392 | enum machine_mode)); | |
1393 | extern rtx simplify_gen_ternary PARAMS ((enum rtx_code, | |
1394 | enum machine_mode, | |
1395 | enum machine_mode, | |
1396 | rtx, rtx, rtx)); | |
1397 | extern rtx simplify_gen_relational PARAMS ((enum rtx_code, | |
141e454b | 1398 | enum machine_mode, |
d9c695ff RK |
1399 | enum machine_mode, |
1400 | rtx, rtx)); | |
eea50aa0 JH |
1401 | extern rtx simplify_subreg PARAMS ((enum machine_mode, |
1402 | rtx, | |
1403 | enum machine_mode, | |
1404 | unsigned int)); | |
949c5d62 JH |
1405 | extern rtx simplify_gen_subreg PARAMS ((enum machine_mode, |
1406 | rtx, | |
1407 | enum machine_mode, | |
1408 | unsigned int)); | |
d9c695ff | 1409 | extern rtx simplify_replace_rtx PARAMS ((rtx, rtx, rtx)); |
cdadb1dd | 1410 | extern rtx simplify_rtx PARAMS ((rtx)); |
732910b9 | 1411 | extern rtx avoid_constant_pool_reference PARAMS ((rtx)); |
4eb00163 | 1412 | |
4eb00163 | 1413 | /* In function.c */ |
2f78c311 | 1414 | extern rtx gen_mem_addressof PARAMS ((rtx, tree)); |
4eb00163 | 1415 | |
4eb00163 | 1416 | /* In regclass.c */ |
770ae6cc RK |
1417 | extern enum machine_mode choose_hard_reg_mode PARAMS ((unsigned int, |
1418 | unsigned int)); | |
4eb00163 JO |
1419 | |
1420 | /* In emit-rtl.c */ | |
3d238248 | 1421 | extern rtx set_unique_reg_note PARAMS ((rtx, enum reg_note, rtx)); |
9ae8ffe7 | 1422 | |
e9a25f70 JL |
1423 | /* Functions in rtlanal.c */ |
1424 | ||
b1cdafbb JH |
1425 | /* Single set is implemented as macro for performance reasons. */ |
1426 | #define single_set(I) (INSN_P (I) \ | |
1427 | ? (GET_CODE (PATTERN (I)) == SET \ | |
1428 | ? PATTERN (I) : single_set_1 (I)) \ | |
1429 | : NULL_RTX) | |
2130b7fb | 1430 | #define single_set_1(I) single_set_2 (I, PATTERN (I)) |
b1cdafbb | 1431 | |
e38fe8e0 | 1432 | extern int rtx_addr_can_trap_p PARAMS ((rtx)); |
cdadb1dd | 1433 | extern int rtx_unstable_p PARAMS ((rtx)); |
e38fe8e0 BS |
1434 | extern int rtx_varies_p PARAMS ((rtx, int)); |
1435 | extern int rtx_addr_varies_p PARAMS ((rtx, int)); | |
cdadb1dd KG |
1436 | extern HOST_WIDE_INT get_integer_term PARAMS ((rtx)); |
1437 | extern rtx get_related_value PARAMS ((rtx)); | |
d644189f | 1438 | extern rtx get_jump_table_offset PARAMS ((rtx, rtx *)); |
cdadb1dd | 1439 | extern int reg_mentioned_p PARAMS ((rtx, rtx)); |
4b983fdc | 1440 | extern int count_occurrences PARAMS ((rtx, rtx, int)); |
cdadb1dd KG |
1441 | extern int reg_referenced_p PARAMS ((rtx, rtx)); |
1442 | extern int reg_used_between_p PARAMS ((rtx, rtx, rtx)); | |
1443 | extern int reg_referenced_between_p PARAMS ((rtx, rtx, rtx)); | |
1444 | extern int reg_set_between_p PARAMS ((rtx, rtx, rtx)); | |
1445 | extern int regs_set_between_p PARAMS ((rtx, rtx, rtx)); | |
9b3bd424 | 1446 | extern int commutative_operand_precedence PARAMS ((rtx)); |
e5c56fd9 | 1447 | extern int swap_commutative_operands_p PARAMS ((rtx, rtx)); |
cdadb1dd KG |
1448 | extern int modified_between_p PARAMS ((rtx, rtx, rtx)); |
1449 | extern int no_labels_between_p PARAMS ((rtx, rtx)); | |
1450 | extern int no_jumps_between_p PARAMS ((rtx, rtx)); | |
1451 | extern int modified_in_p PARAMS ((rtx, rtx)); | |
4eb00163 | 1452 | extern int insn_dependent_p PARAMS ((rtx, rtx)); |
cdadb1dd | 1453 | extern int reg_set_p PARAMS ((rtx, rtx)); |
2130b7fb | 1454 | extern rtx single_set_2 PARAMS ((rtx, rtx)); |
cdadb1dd | 1455 | extern int multiple_sets PARAMS ((rtx)); |
7142e318 | 1456 | extern int set_noop_p PARAMS ((rtx)); |
0005550b | 1457 | extern int noop_move_p PARAMS ((rtx)); |
cdadb1dd | 1458 | extern rtx find_last_value PARAMS ((rtx, rtx *, rtx, int)); |
770ae6cc RK |
1459 | extern int refers_to_regno_p PARAMS ((unsigned int, unsigned int, |
1460 | rtx, rtx *)); | |
cdadb1dd | 1461 | extern int reg_overlap_mentioned_p PARAMS ((rtx, rtx)); |
91b2d119 | 1462 | extern rtx set_of PARAMS ((rtx, rtx)); |
770ae6cc RK |
1463 | extern void note_stores PARAMS ((rtx, |
1464 | void (*) (rtx, rtx, void *), | |
1465 | void *)); | |
e2373f95 RK |
1466 | extern void note_uses PARAMS ((rtx *, |
1467 | void (*) (rtx *, void *), | |
1468 | void *)); | |
cdadb1dd KG |
1469 | extern rtx reg_set_last PARAMS ((rtx, rtx)); |
1470 | extern int dead_or_set_p PARAMS ((rtx, rtx)); | |
770ae6cc | 1471 | extern int dead_or_set_regno_p PARAMS ((rtx, unsigned int)); |
cdadb1dd | 1472 | extern rtx find_reg_note PARAMS ((rtx, enum reg_note, rtx)); |
770ae6cc RK |
1473 | extern rtx find_regno_note PARAMS ((rtx, enum reg_note, |
1474 | unsigned int)); | |
d9c695ff | 1475 | extern rtx find_reg_equal_equiv_note PARAMS ((rtx)); |
cdadb1dd | 1476 | extern int find_reg_fusage PARAMS ((rtx, enum rtx_code, rtx)); |
770ae6cc RK |
1477 | extern int find_regno_fusage PARAMS ((rtx, enum rtx_code, |
1478 | unsigned int)); | |
cdadb1dd KG |
1479 | extern void remove_note PARAMS ((rtx, rtx)); |
1480 | extern int side_effects_p PARAMS ((rtx)); | |
1481 | extern int volatile_refs_p PARAMS ((rtx)); | |
1482 | extern int volatile_insn_p PARAMS ((rtx)); | |
1483 | extern int may_trap_p PARAMS ((rtx)); | |
1484 | extern int inequality_comparisons_p PARAMS ((rtx)); | |
1485 | extern rtx replace_rtx PARAMS ((rtx, rtx, rtx)); | |
770ae6cc RK |
1486 | extern rtx replace_regs PARAMS ((rtx, rtx *, unsigned int, |
1487 | int)); | |
cdadb1dd KG |
1488 | extern int computed_jump_p PARAMS ((rtx)); |
1489 | typedef int (*rtx_function) PARAMS ((rtx *, void *)); | |
1490 | extern int for_each_rtx PARAMS ((rtx *, rtx_function, void *)); | |
770ae6cc | 1491 | extern rtx regno_use_in PARAMS ((unsigned int, rtx)); |
cdadb1dd | 1492 | extern int auto_inc_p PARAMS ((rtx)); |
5f0d2358 | 1493 | extern int in_expr_list_p PARAMS ((rtx, rtx)); |
cdadb1dd KG |
1494 | extern void remove_node_from_expr_list PARAMS ((rtx, rtx *)); |
1495 | extern int insns_safe_to_move_p PARAMS ((rtx, rtx, rtx *)); | |
db7ba742 | 1496 | extern int loc_mentioned_in_p PARAMS ((rtx *, rtx)); |
833366d6 | 1497 | extern rtx find_first_parameter_load PARAMS ((rtx, rtx)); |
6f29feb1 | 1498 | |
ae0b51ef JL |
1499 | /* flow.c */ |
1500 | ||
cdadb1dd KG |
1501 | extern rtx find_use_as_address PARAMS ((rtx, rtx, HOST_WIDE_INT)); |
1502 | void init_EXPR_INSN_LIST_cache PARAMS ((void)); | |
1503 | void free_EXPR_LIST_list PARAMS ((rtx *)); | |
1504 | void free_INSN_LIST_list PARAMS ((rtx *)); | |
1505 | void free_EXPR_LIST_node PARAMS ((rtx)); | |
1506 | void free_INSN_LIST_node PARAMS ((rtx)); | |
1507 | rtx alloc_INSN_LIST PARAMS ((rtx, rtx)); | |
1508 | rtx alloc_EXPR_LIST PARAMS ((int, rtx, rtx)); | |
ae0b51ef JL |
1509 | |
1510 | /* regclass.c */ | |
1511 | ||
6f29feb1 JW |
1512 | /* Maximum number of parallel sets and clobbers in any insn in this fn. |
1513 | Always at least 3, since the combiner could put that many togetherm | |
1514 | and we want this to remain correct for all the remaining passes. */ | |
1515 | ||
1516 | extern int max_parallel; | |
1517 | ||
e0c6d139 | 1518 | /* Free up register info memory. */ |
cdadb1dd | 1519 | extern void free_reg_info PARAMS ((void)); |
e0c6d139 | 1520 | |
ae0b51ef | 1521 | /* recog.c */ |
cdadb1dd | 1522 | extern int asm_noperands PARAMS ((rtx)); |
3cce094d | 1523 | extern const char *decode_asm_operands PARAMS ((rtx, rtx *, rtx **, |
9b3142b3 KG |
1524 | const char **, |
1525 | enum machine_mode *)); | |
6f29feb1 | 1526 | |
cdadb1dd KG |
1527 | extern enum reg_class reg_preferred_class PARAMS ((int)); |
1528 | extern enum reg_class reg_alternate_class PARAMS ((int)); | |
6f29feb1 | 1529 | |
cdadb1dd | 1530 | extern rtx get_first_nonparm_insn PARAMS ((void)); |
6f29feb1 | 1531 | |
cdadb1dd | 1532 | extern void split_all_insns PARAMS ((int)); |
6f862f2f | 1533 | extern void split_all_insns_noflow PARAMS ((void)); |
6a73406e | 1534 | |
68d75312 | 1535 | #define MAX_SAVED_CONST_INT 64 |
5da077de | 1536 | extern rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; |
68d75312 | 1537 | |
5da077de AS |
1538 | #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) |
1539 | #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) | |
1540 | #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) | |
1541 | #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) | |
6f29feb1 | 1542 | extern rtx const_true_rtx; |
a8efe40d RK |
1543 | |
1544 | extern rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; | |
1545 | ||
f590cca1 | 1546 | /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the |
a8efe40d RK |
1547 | same as VOIDmode. */ |
1548 | ||
1549 | #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) | |
1550 | ||
1551 | /* Likewise, for the constants 1 and 2. */ | |
1552 | ||
1553 | #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) | |
1554 | #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) | |
6f29feb1 | 1555 | |
5da077de AS |
1556 | /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg |
1557 | is used to represent the frame pointer. This is because the | |
1558 | hard frame pointer and the automatic variables are separated by an amount | |
1559 | that cannot be determined until after register allocation. We can assume | |
1560 | that in this case ELIMINABLE_REGS will be defined, one action of which | |
eebedaa5 | 1561 | will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ |
5da077de AS |
1562 | #ifndef HARD_FRAME_POINTER_REGNUM |
1563 | #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM | |
1564 | #endif | |
1565 | ||
1566 | /* Index labels for global_rtl. */ | |
1567 | enum global_rtl_index | |
68d75312 | 1568 | { |
5da077de AS |
1569 | GR_PC, |
1570 | GR_CC0, | |
1571 | GR_STACK_POINTER, | |
1572 | GR_FRAME_POINTER, | |
1573 | /* For register elimination to work properly these hard_frame_pointer_rtx, | |
1574 | frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to | |
1575 | the same register. */ | |
1576 | #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1577 | GR_ARG_POINTER = GR_FRAME_POINTER, | |
1578 | #endif | |
1579 | #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM | |
1580 | GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, | |
1581 | #else | |
1582 | GR_HARD_FRAME_POINTER, | |
1583 | #endif | |
1584 | #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM | |
1585 | #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1586 | GR_ARG_POINTER = GR_HARD_FRAME_POINTER, | |
1587 | #else | |
1588 | GR_ARG_POINTER, | |
1589 | #endif | |
1590 | #endif | |
1591 | GR_VIRTUAL_INCOMING_ARGS, | |
1592 | GR_VIRTUAL_STACK_ARGS, | |
1593 | GR_VIRTUAL_STACK_DYNAMIC, | |
1594 | GR_VIRTUAL_OUTGOING_ARGS, | |
1595 | GR_VIRTUAL_CFA, | |
1596 | ||
1597 | GR_MAX | |
1598 | }; | |
1599 | ||
1600 | /* Pointers to standard pieces of rtx are stored here. */ | |
1601 | extern rtx global_rtl[GR_MAX]; | |
1602 | ||
1603 | /* Standard pieces of rtx, to be substituted directly into things. */ | |
1604 | #define pc_rtx (global_rtl[GR_PC]) | |
1605 | #define cc0_rtx (global_rtl[GR_CC0]) | |
68d75312 | 1606 | |
6f29feb1 JW |
1607 | /* All references to certain hard regs, except those created |
1608 | by allocating pseudo regs into them (when that's possible), | |
1609 | go through these unique rtx objects. */ | |
5da077de AS |
1610 | #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) |
1611 | #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) | |
1612 | #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) | |
1613 | #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) | |
68d75312 | 1614 | |
6f29feb1 JW |
1615 | extern rtx pic_offset_table_rtx; |
1616 | extern rtx struct_value_rtx; | |
1617 | extern rtx struct_value_incoming_rtx; | |
1618 | extern rtx static_chain_rtx; | |
1619 | extern rtx static_chain_incoming_rtx; | |
07ebc930 | 1620 | extern rtx return_address_pointer_rtx; |
3b80f6ca RH |
1621 | |
1622 | /* Include the RTL generation functions. */ | |
1623 | ||
1624 | #ifndef NO_GENRTL_H | |
1625 | #include "genrtl.h" | |
1626 | #endif | |
1627 | ||
41472af8 MM |
1628 | /* There are some RTL codes that require special attention; the |
1629 | generation functions included above do the raw handling. If you | |
b4213325 MM |
1630 | add to this list, modify special_rtx in gengenrtl.c as well. You |
1631 | should also modify gen_rtx to use the special function. */ | |
3b80f6ca | 1632 | |
a79e3a45 | 1633 | extern rtx gen_rtx_CONST_DOUBLE PARAMS ((enum machine_mode, |
0133b7d9 | 1634 | HOST_WIDE_INT, HOST_WIDE_INT)); |
cdadb1dd | 1635 | extern rtx gen_rtx_CONST_INT PARAMS ((enum machine_mode, HOST_WIDE_INT)); |
08394eef | 1636 | extern rtx gen_raw_REG PARAMS ((enum machine_mode, int)); |
cdadb1dd | 1637 | extern rtx gen_rtx_REG PARAMS ((enum machine_mode, int)); |
ddef6bc7 | 1638 | extern rtx gen_rtx_SUBREG PARAMS ((enum machine_mode, rtx, int)); |
cdadb1dd | 1639 | extern rtx gen_rtx_MEM PARAMS ((enum machine_mode, rtx)); |
3b80f6ca | 1640 | |
ddef6bc7 JJ |
1641 | extern rtx gen_lowpart_SUBREG PARAMS ((enum machine_mode, rtx)); |
1642 | ||
aefdd5ab JL |
1643 | /* We need the cast here to ensure that we get the same result both with |
1644 | and without prototypes. */ | |
1645 | #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N)) | |
3b80f6ca | 1646 | |
6f29feb1 JW |
1647 | /* Virtual registers are used during RTL generation to refer to locations into |
1648 | the stack frame when the actual location isn't known until RTL generation | |
1649 | is complete. The routine instantiate_virtual_regs replaces these with | |
1650 | the proper value, which is normally {frame,arg,stack}_pointer_rtx plus | |
1651 | a constant. */ | |
1652 | ||
1653 | #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) | |
1654 | ||
1655 | /* This points to the first word of the incoming arguments passed on the stack, | |
1656 | either by the caller or by the callee when pretending it was passed by the | |
1657 | caller. */ | |
1658 | ||
5da077de | 1659 | #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) |
6f29feb1 JW |
1660 | |
1661 | #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) | |
1662 | ||
60343c3b | 1663 | /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first |
6f29feb1 JW |
1664 | variable on the stack. Otherwise, it points to the first variable on |
1665 | the stack. */ | |
1666 | ||
5da077de | 1667 | #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) |
6f29feb1 JW |
1668 | |
1669 | #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) | |
1670 | ||
1671 | /* This points to the location of dynamically-allocated memory on the stack | |
1672 | immediately after the stack pointer has been adjusted by the amount | |
1673 | desired. */ | |
1674 | ||
5da077de | 1675 | #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) |
6f29feb1 JW |
1676 | |
1677 | #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) | |
1678 | ||
1679 | /* This points to the location in the stack at which outgoing arguments should | |
1680 | be written when the stack is pre-pushed (arguments pushed using push | |
1681 | insns always use sp). */ | |
1682 | ||
5da077de | 1683 | #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) |
6f29feb1 JW |
1684 | |
1685 | #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) | |
1686 | ||
71038426 RH |
1687 | /* This points to the Canonical Frame Address of the function. This |
1688 | should corrospond to the CFA produced by INCOMING_FRAME_SP_OFFSET, | |
1689 | but is calculated relative to the arg pointer for simplicity; the | |
f590cca1 | 1690 | frame pointer nor stack pointer are necessarily fixed relative to |
71038426 RH |
1691 | the CFA until after reload. */ |
1692 | ||
5da077de | 1693 | #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) |
71038426 RH |
1694 | |
1695 | #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) | |
1696 | ||
1697 | #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) | |
6f29feb1 | 1698 | |
a06ef755 RK |
1699 | /* Nonzero if REGNUM is a pointer into the stack frame. */ |
1700 | #define REGNO_PTR_FRAME_P(REGNUM) \ | |
1701 | ((REGNUM) == STACK_POINTER_REGNUM \ | |
1702 | || (REGNUM) == FRAME_POINTER_REGNUM \ | |
1703 | || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ | |
1704 | || (REGNUM) == ARG_POINTER_REGNUM \ | |
1705 | || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ | |
1706 | && (REGNUM) <= LAST_VIRTUAL_REGISTER)) | |
1707 | ||
848e0190 | 1708 | /* REGNUM never really appearing in the INSN stream. */ |
cf403648 | 1709 | #define INVALID_REGNUM (~(unsigned int) 0) |
848e0190 | 1710 | |
cdadb1dd | 1711 | extern rtx find_next_ref PARAMS ((rtx, rtx)); |
f837a861 | 1712 | |
2f78c311 ZW |
1713 | extern rtx output_constant_def PARAMS ((tree, int)); |
1714 | extern rtx immed_real_const PARAMS ((tree)); | |
6f29feb1 JW |
1715 | |
1716 | /* Define a default value for STORE_FLAG_VALUE. */ | |
1717 | ||
1718 | #ifndef STORE_FLAG_VALUE | |
1719 | #define STORE_FLAG_VALUE 1 | |
1720 | #endif | |
1721 | ||
0ea0e871 JL |
1722 | /* Nonzero after the second flow pass has completed. |
1723 | Set to 1 or 0 by toplev.c */ | |
1724 | extern int flow2_completed; | |
1725 | ||
6f29feb1 | 1726 | /* Nonzero after end of reload pass. |
0ea0e871 | 1727 | Set to 1 or 0 by reload1.c. */ |
6f29feb1 JW |
1728 | |
1729 | extern int reload_completed; | |
1730 | ||
1731 | /* Set to 1 while reload_as_needed is operating. | |
1732 | Required by some machines to handle any generated moves differently. */ | |
1733 | ||
1734 | extern int reload_in_progress; | |
1735 | ||
1736 | /* If this is nonzero, we do not bother generating VOLATILE | |
1737 | around volatile memory references, and we are willing to | |
1738 | output indirect addresses. If cse is to follow, we reject | |
1739 | indirect addresses so a useful potential cse is generated; | |
1740 | if it is used only once, instruction combination will produce | |
1741 | the same indirect address eventually. */ | |
1742 | extern int cse_not_expected; | |
1743 | ||
f1db3576 JL |
1744 | /* Set to nonzero before life analysis to indicate that it is unsafe to |
1745 | generate any new pseudo registers. */ | |
1746 | extern int no_new_pseudos; | |
1747 | ||
f5118aa5 | 1748 | /* Translates rtx code to tree code, for those codes needed by |
88efc60a RK |
1749 | REAL_ARITHMETIC. The function returns an int because the caller may not |
1750 | know what `enum tree_code' means. */ | |
1751 | ||
cdadb1dd | 1752 | extern int rtx_to_tree_code PARAMS ((enum rtx_code)); |
9ae8ffe7 | 1753 | |
ac957f13 | 1754 | /* In tree.c */ |
ac957f13 | 1755 | struct obstack; |
cdadb1dd | 1756 | extern void gcc_obstack_init PARAMS ((struct obstack *)); |
1f8f4a0b | 1757 | |
ac957f13 JL |
1758 | /* In cse.c */ |
1759 | struct cse_basic_block_data; | |
f1c1dfc3 BS |
1760 | |
1761 | /* Return the right cost to give to an operation | |
1762 | to make the cost of the corresponding register-to-register instruction | |
1763 | N times that of a fast register-to-register instruction. */ | |
1764 | #define COSTS_N_INSNS(N) ((N) * 4) | |
1765 | ||
1766 | /* Maximum cost of a rtl expression. This value has the special meaning | |
1767 | not to use an rtx with this cost under any circumstances. */ | |
1768 | #define MAX_COST INT_MAX | |
1769 | ||
cdadb1dd | 1770 | extern int rtx_cost PARAMS ((rtx, enum rtx_code)); |
01329426 | 1771 | extern int address_cost PARAMS ((rtx, enum machine_mode)); |
4793dca1 | 1772 | extern void delete_trivially_dead_insns PARAMS ((rtx, int, int)); |
ac957f13 | 1773 | #ifdef BUFSIZ |
cdadb1dd | 1774 | extern int cse_main PARAMS ((rtx, int, int, FILE *)); |
ac957f13 | 1775 | #endif |
cdadb1dd | 1776 | extern void cse_end_of_basic_block PARAMS ((rtx, |
ac957f13 JL |
1777 | struct cse_basic_block_data *, |
1778 | int, int, int)); | |
1779 | ||
1780 | /* In jump.c */ | |
cdadb1dd KG |
1781 | extern int comparison_dominates_p PARAMS ((enum rtx_code, enum rtx_code)); |
1782 | extern int condjump_p PARAMS ((rtx)); | |
e4c85816 JH |
1783 | extern int any_condjump_p PARAMS ((rtx)); |
1784 | extern int any_uncondjump_p PARAMS ((rtx)); | |
1785 | extern int safe_to_remove_jump_p PARAMS ((rtx)); | |
1786 | extern rtx pc_set PARAMS ((rtx)); | |
cdadb1dd KG |
1787 | extern rtx condjump_label PARAMS ((rtx)); |
1788 | extern int simplejump_p PARAMS ((rtx)); | |
1789 | extern int returnjump_p PARAMS ((rtx)); | |
1790 | extern int onlyjump_p PARAMS ((rtx)); | |
44ce0063 | 1791 | extern int only_sets_cc0_p PARAMS ((rtx)); |
cdadb1dd | 1792 | extern int sets_cc0_p PARAMS ((rtx)); |
2ea64f10 | 1793 | extern int invert_jump_1 PARAMS ((rtx, rtx)); |
9ba11d5a | 1794 | extern int invert_jump PARAMS ((rtx, rtx, int)); |
cdadb1dd KG |
1795 | extern int rtx_renumbered_equal_p PARAMS ((rtx, rtx)); |
1796 | extern int true_regnum PARAMS ((rtx)); | |
2ea64f10 | 1797 | extern int redirect_jump_1 PARAMS ((rtx, rtx)); |
9ba11d5a | 1798 | extern int redirect_jump PARAMS ((rtx, rtx, int)); |
cdadb1dd | 1799 | extern void rebuild_jump_labels PARAMS ((rtx)); |
ab94bc48 JH |
1800 | extern enum rtx_code reversed_comparison_code PARAMS ((rtx, rtx)); |
1801 | extern enum rtx_code reversed_comparison_code_parts PARAMS ((enum rtx_code, | |
1802 | rtx, rtx, rtx)); | |
cdadb1dd KG |
1803 | extern void delete_for_peephole PARAMS ((rtx, rtx)); |
1804 | extern int condjump_in_parallel_p PARAMS ((rtx)); | |
1805 | extern void never_reached_warning PARAMS ((rtx)); | |
0045d504 JH |
1806 | extern void purge_line_number_notes PARAMS ((rtx)); |
1807 | extern void copy_loop_headers PARAMS ((rtx)); | |
14bf4a33 | 1808 | |
eebedaa5 | 1809 | /* In emit-rtl.c. */ |
cdadb1dd KG |
1810 | extern int max_reg_num PARAMS ((void)); |
1811 | extern int max_label_num PARAMS ((void)); | |
1812 | extern int get_first_label_num PARAMS ((void)); | |
1813 | extern void delete_insns_since PARAMS ((rtx)); | |
1814 | extern void mark_reg_pointer PARAMS ((rtx, int)); | |
1815 | extern void mark_user_reg PARAMS ((rtx)); | |
1816 | extern void reset_used_flags PARAMS ((rtx)); | |
1817 | extern void reorder_insns PARAMS ((rtx, rtx, rtx)); | |
3c030e88 | 1818 | extern void reorder_insns_nobb PARAMS ((rtx, rtx, rtx)); |
cdadb1dd KG |
1819 | extern int get_max_uid PARAMS ((void)); |
1820 | extern int in_sequence_p PARAMS ((void)); | |
1821 | extern void force_next_line_note PARAMS ((void)); | |
1822 | extern void clear_emit_caches PARAMS ((void)); | |
1823 | extern void init_emit PARAMS ((void)); | |
1824 | extern void init_emit_once PARAMS ((int)); | |
1825 | extern void push_topmost_sequence PARAMS ((void)); | |
1826 | extern void pop_topmost_sequence PARAMS ((void)); | |
1827 | extern int subreg_realpart_p PARAMS ((rtx)); | |
1828 | extern void reverse_comparison PARAMS ((rtx)); | |
1829 | extern void set_new_first_and_last_insn PARAMS ((rtx, rtx)); | |
1830 | extern void set_new_first_and_last_label_num PARAMS ((int, int)); | |
1831 | extern void set_new_last_label_num PARAMS ((int)); | |
d1b81779 | 1832 | extern void unshare_all_rtl_again PARAMS ((rtx)); |
cdadb1dd KG |
1833 | extern void set_last_insn PARAMS ((rtx)); |
1834 | extern void link_cc0_insns PARAMS ((rtx)); | |
1835 | extern void add_insn PARAMS ((rtx)); | |
1836 | extern void add_insn_before PARAMS ((rtx, rtx)); | |
1837 | extern void add_insn_after PARAMS ((rtx, rtx)); | |
1838 | extern void remove_insn PARAMS ((rtx)); | |
1839 | extern void reorder_insns_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1840 | extern void emit_insn_after_with_line_notes PARAMS ((rtx, rtx, rtx)); | |
1841 | extern enum rtx_code classify_insn PARAMS ((rtx)); | |
1842 | extern rtx emit PARAMS ((rtx)); | |
a11759a3 JR |
1843 | /* Query and clear/ restore no_line_numbers. This is used by the |
1844 | switch / case handling in stmt.c to give proper line numbers in | |
1845 | warnings about unreachable code. */ | |
cdadb1dd KG |
1846 | int force_line_numbers PARAMS ((void)); |
1847 | void restore_line_number_status PARAMS ((int old_value)); | |
1848 | extern void renumber_insns PARAMS ((FILE *)); | |
f8855270 | 1849 | extern void remove_unnecessary_notes PARAMS ((void)); |
53c17031 JH |
1850 | extern rtx delete_insn PARAMS ((rtx)); |
1851 | extern void delete_insn_chain PARAMS ((rtx, rtx)); | |
ac957f13 | 1852 | |
ac957f13 | 1853 | /* In combine.c */ |
770ae6cc RK |
1854 | extern int combine_instructions PARAMS ((rtx, unsigned int)); |
1855 | extern unsigned int extended_count PARAMS ((rtx, enum machine_mode, int)); | |
1856 | extern rtx remove_death PARAMS ((unsigned int, rtx)); | |
ac957f13 | 1857 | #ifdef BUFSIZ |
cdadb1dd KG |
1858 | extern void dump_combine_stats PARAMS ((FILE *)); |
1859 | extern void dump_combine_total_stats PARAMS ((FILE *)); | |
ac957f13 JL |
1860 | #endif |
1861 | ||
eebedaa5 | 1862 | /* In sched.c. */ |
ac957f13 | 1863 | #ifdef BUFSIZ |
cdadb1dd | 1864 | extern void schedule_insns PARAMS ((FILE *)); |
18e720b3 | 1865 | extern void schedule_ebbs PARAMS ((FILE *)); |
ac957f13 | 1866 | #endif |
cdadb1dd | 1867 | extern void fix_sched_param PARAMS ((const char *, const char *)); |
ac957f13 JL |
1868 | |
1869 | /* In print-rtl.c */ | |
47c10e9b | 1870 | extern const char *print_rtx_head; |
cdadb1dd KG |
1871 | extern void debug_rtx PARAMS ((rtx)); |
1872 | extern void debug_rtx_list PARAMS ((rtx, int)); | |
4c85a96d | 1873 | extern void debug_rtx_range PARAMS ((rtx, rtx)); |
cdadb1dd | 1874 | extern rtx debug_rtx_find PARAMS ((rtx, int)); |
ac957f13 | 1875 | #ifdef BUFSIZ |
998d7deb | 1876 | extern void print_mem_expr PARAMS ((FILE *, tree)); |
cdadb1dd | 1877 | extern void print_rtl PARAMS ((FILE *, rtx)); |
75b7557d | 1878 | extern void print_simple_rtl PARAMS ((FILE *, rtx)); |
cdadb1dd KG |
1879 | extern int print_rtl_single PARAMS ((FILE *, rtx)); |
1880 | extern void print_inline_rtx PARAMS ((FILE *, rtx, int)); | |
ac957f13 JL |
1881 | #endif |
1882 | ||
1883 | /* In loop.c */ | |
cdadb1dd KG |
1884 | extern void init_loop PARAMS ((void)); |
1885 | extern rtx libcall_other_reg PARAMS ((rtx, rtx)); | |
ac957f13 | 1886 | #ifdef BUFSIZ |
1bf14ad7 | 1887 | extern void loop_optimize PARAMS ((rtx, FILE *, int)); |
ac957f13 | 1888 | #endif |
cdadb1dd | 1889 | extern void record_excess_regs PARAMS ((rtx, rtx, rtx *)); |
ac957f13 JL |
1890 | |
1891 | /* In function.c */ | |
cdadb1dd KG |
1892 | extern void reposition_prologue_and_epilogue_notes PARAMS ((rtx)); |
1893 | extern void thread_prologue_and_epilogue_insns PARAMS ((rtx)); | |
1894 | extern int prologue_epilogue_contains PARAMS ((rtx)); | |
0a1c58a2 | 1895 | extern int sibcall_epilogue_contains PARAMS ((rtx)); |
591ccf92 | 1896 | extern void preserve_rtl_expr_result PARAMS ((rtx)); |
cdadb1dd KG |
1897 | extern void mark_temp_addr_taken PARAMS ((rtx)); |
1898 | extern void update_temp_slot_address PARAMS ((rtx, rtx)); | |
cdadb1dd | 1899 | extern void purge_addressof PARAMS ((rtx)); |
659e47fb | 1900 | extern void purge_hard_subreg_sets PARAMS ((rtx)); |
ac957f13 | 1901 | |
ac957f13 | 1902 | /* In stmt.c */ |
47ee9bcb | 1903 | extern void set_file_and_line_for_stmt PARAMS ((const char *, int)); |
cdadb1dd KG |
1904 | extern void expand_null_return PARAMS ((void)); |
1905 | extern void emit_jump PARAMS ((rtx)); | |
1906 | extern int preserve_subexpressions_p PARAMS ((void)); | |
ac957f13 JL |
1907 | |
1908 | /* In expr.c */ | |
3bdf5ad1 RK |
1909 | extern void move_by_pieces PARAMS ((rtx, rtx, |
1910 | unsigned HOST_WIDE_INT, | |
1911 | unsigned int)); | |
2e245dac | 1912 | |
ac957f13 | 1913 | /* In flow.c */ |
0626ef8a AM |
1914 | extern void recompute_reg_usage PARAMS ((rtx, int)); |
1915 | extern int initialize_uninitialized_subregs PARAMS ((void)); | |
ac957f13 | 1916 | #ifdef BUFSIZ |
0626ef8a AM |
1917 | extern void print_rtl_with_bb PARAMS ((FILE *, rtx)); |
1918 | extern void dump_flow_info PARAMS ((FILE *)); | |
ac957f13 JL |
1919 | #endif |
1920 | ||
1921 | /* In expmed.c */ | |
cdadb1dd KG |
1922 | extern void init_expmed PARAMS ((void)); |
1923 | extern void expand_inc PARAMS ((rtx, rtx)); | |
1924 | extern void expand_dec PARAMS ((rtx, rtx)); | |
1925 | extern rtx expand_mult_highpart PARAMS ((enum machine_mode, rtx, | |
ac957f13 JL |
1926 | unsigned HOST_WIDE_INT, rtx, |
1927 | int, int)); | |
1928 | ||
50b2596f KG |
1929 | /* In gcse.c */ |
1930 | #ifdef BUFSIZ | |
cdadb1dd | 1931 | extern int gcse_main PARAMS ((rtx, FILE *)); |
50b2596f KG |
1932 | #endif |
1933 | ||
ac957f13 | 1934 | /* In global.c */ |
cdadb1dd | 1935 | extern void mark_elimination PARAMS ((int, int)); |
ac957f13 | 1936 | #ifdef BUFSIZ |
cdadb1dd KG |
1937 | extern int global_alloc PARAMS ((FILE *)); |
1938 | extern void dump_global_regs PARAMS ((FILE *)); | |
ac957f13 | 1939 | #endif |
cab634f2 | 1940 | #ifdef HARD_CONST |
cdadb1dd | 1941 | extern void retry_global_alloc PARAMS ((int, HARD_REG_SET)); |
cab634f2 | 1942 | #endif |
d29c259b | 1943 | extern void build_insn_chain PARAMS ((rtx)); |
ac957f13 JL |
1944 | |
1945 | /* In regclass.c */ | |
cdadb1dd KG |
1946 | extern int reg_classes_intersect_p PARAMS ((enum reg_class, enum reg_class)); |
1947 | extern int reg_class_subset_p PARAMS ((enum reg_class, enum reg_class)); | |
1948 | extern void globalize_reg PARAMS ((int)); | |
1949 | extern void init_regs PARAMS ((void)); | |
1950 | extern void init_reg_sets PARAMS ((void)); | |
1951 | extern void regset_release_memory PARAMS ((void)); | |
1952 | extern void regclass_init PARAMS ((void)); | |
1953 | extern void regclass PARAMS ((rtx, int, FILE *)); | |
770ae6cc RK |
1954 | extern void reg_scan PARAMS ((rtx, unsigned int, int)); |
1955 | extern void reg_scan_update PARAMS ((rtx, rtx, unsigned int)); | |
cdadb1dd KG |
1956 | extern void fix_register PARAMS ((const char *, int, int)); |
1957 | ||
1958 | extern void delete_null_pointer_checks PARAMS ((rtx)); | |
a157febd | 1959 | |
50b2596f KG |
1960 | /* In regmove.c */ |
1961 | #ifdef BUFSIZ | |
cdadb1dd | 1962 | extern void regmove_optimize PARAMS ((rtx, int, FILE *)); |
50b2596f | 1963 | #endif |
1e7f0a48 | 1964 | extern void combine_stack_adjustments PARAMS ((void)); |
50b2596f KG |
1965 | |
1966 | /* In reorg.c */ | |
1967 | #ifdef BUFSIZ | |
cdadb1dd | 1968 | extern void dbr_schedule PARAMS ((rtx, FILE *)); |
50b2596f KG |
1969 | #endif |
1970 | ||
ac957f13 JL |
1971 | /* In local-alloc.c */ |
1972 | #ifdef BUFSIZ | |
cdadb1dd | 1973 | extern void dump_local_alloc PARAMS ((FILE *)); |
ac957f13 | 1974 | #endif |
cdadb1dd KG |
1975 | extern int local_alloc PARAMS ((void)); |
1976 | extern int function_invariant_p PARAMS ((rtx)); | |
ac957f13 | 1977 | |
ac957f13 | 1978 | /* In profile.c */ |
cdadb1dd | 1979 | extern void init_branch_prob PARAMS ((const char *)); |
51891abe JH |
1980 | extern void branch_prob PARAMS ((void)); |
1981 | extern void end_branch_prob PARAMS ((void)); | |
cdadb1dd | 1982 | extern void output_func_start_profiler PARAMS ((void)); |
ac957f13 JL |
1983 | |
1984 | /* In reg-stack.c */ | |
1985 | #ifdef BUFSIZ | |
cdadb1dd | 1986 | extern void reg_to_stack PARAMS ((rtx, FILE *)); |
ac957f13 | 1987 | #endif |
ac957f13 JL |
1988 | |
1989 | /* In fold-const.c */ | |
05bccae2 RK |
1990 | extern int add_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, |
1991 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1992 | unsigned HOST_WIDE_INT *, | |
1993 | HOST_WIDE_INT *)); | |
1994 | extern int neg_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
1995 | unsigned HOST_WIDE_INT *, | |
1996 | HOST_WIDE_INT *)); | |
1997 | extern int mul_double PARAMS ((unsigned HOST_WIDE_INT, | |
1998 | HOST_WIDE_INT, | |
1999 | unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2000 | unsigned HOST_WIDE_INT *, | |
2001 | HOST_WIDE_INT *)); | |
2002 | extern void lshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2003 | HOST_WIDE_INT, unsigned int, | |
2004 | unsigned HOST_WIDE_INT *, | |
2005 | HOST_WIDE_INT *, int)); | |
2006 | extern void rshift_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2007 | HOST_WIDE_INT, unsigned int, | |
2008 | unsigned HOST_WIDE_INT *, | |
2009 | HOST_WIDE_INT *, int)); | |
2010 | extern void lrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2011 | HOST_WIDE_INT, unsigned int, | |
2012 | unsigned HOST_WIDE_INT *, | |
2013 | HOST_WIDE_INT *)); | |
2014 | extern void rrotate_double PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT, | |
2015 | HOST_WIDE_INT, unsigned int, | |
2016 | unsigned HOST_WIDE_INT *, | |
2017 | HOST_WIDE_INT *)); | |
ac957f13 JL |
2018 | |
2019 | /* In calls.c */ | |
ebb1b59a BS |
2020 | enum libcall_type |
2021 | { | |
2022 | LCT_NORMAL = 0, | |
2023 | LCT_CONST = 1, | |
2024 | LCT_PURE = 2, | |
2025 | LCT_CONST_MAKE_BLOCK = 3, | |
695ee791 | 2026 | LCT_PURE_MAKE_BLOCK = 4, |
9555a122 | 2027 | LCT_NORETURN = 5, |
9d98f8f9 | 2028 | LCT_THROW = 6, |
9defc9b7 RH |
2029 | LCT_ALWAYS_RETURN = 7, |
2030 | LCT_RETURNS_TWICE = 8 | |
ebb1b59a BS |
2031 | }; |
2032 | ||
2033 | extern void emit_library_call PARAMS ((rtx, enum libcall_type, | |
2034 | enum machine_mode, int, | |
2035 | ...)); | |
2036 | extern rtx emit_library_call_value PARAMS ((rtx, rtx, enum libcall_type, | |
2037 | enum machine_mode, int, | |
2038 | ...)); | |
ac957f13 JL |
2039 | |
2040 | /* In unroll.c */ | |
cdadb1dd | 2041 | extern int set_dominates_use PARAMS ((int, int, int, rtx, rtx)); |
ac957f13 JL |
2042 | |
2043 | /* In varasm.c */ | |
cdadb1dd | 2044 | extern int in_data_section PARAMS ((void)); |
cdadb1dd | 2045 | extern void init_varasm_once PARAMS ((void)); |
ac957f13 JL |
2046 | |
2047 | /* In rtl.c */ | |
cdadb1dd | 2048 | extern void init_rtl PARAMS ((void)); |
c25c12b8 R |
2049 | extern void traverse_md_constants PARAMS ((int (*) (void **, void *), |
2050 | void *)); | |
2051 | struct md_constant { char *name, *value; }; | |
ac957f13 | 2052 | |
bcdaba58 | 2053 | #ifdef BUFSIZ |
cdadb1dd KG |
2054 | extern int read_skip_spaces PARAMS ((FILE *)); |
2055 | extern rtx read_rtx PARAMS ((FILE *)); | |
bcdaba58 RH |
2056 | #endif |
2057 | ||
2058 | extern const char *read_rtx_filename; | |
2059 | extern int read_rtx_lineno; | |
2060 | ||
987009bf ZW |
2061 | /* Redefine abort to report an internal error w/o coredump, and |
2062 | reporting the location of the error in the source file. This logic | |
2063 | is duplicated in rtl.h and tree.h because every file that needs the | |
2064 | special abort includes one or both. toplev.h gets too few files, | |
2065 | system.h gets too many. */ | |
2066 | ||
cdadb1dd | 2067 | extern void fancy_abort PARAMS ((const char *, int, const char *)) |
987009bf | 2068 | ATTRIBUTE_NORETURN; |
fbfc1192 | 2069 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) |
987009bf | 2070 | |
ac957f13 | 2071 | /* In alias.c */ |
43fe47ca | 2072 | extern void clear_reg_alias_info PARAMS ((rtx)); |
db048faf | 2073 | extern rtx canon_rtx PARAMS ((rtx)); |
cdadb1dd | 2074 | extern int true_dependence PARAMS ((rtx, enum machine_mode, rtx, |
e38fe8e0 | 2075 | int (*)(rtx, int))); |
a13d4ebf AM |
2076 | extern rtx get_addr PARAMS ((rtx)); |
2077 | extern int canon_true_dependence PARAMS ((rtx, enum machine_mode, rtx, | |
2078 | rtx, int (*)(rtx, int))); | |
cdadb1dd KG |
2079 | extern int read_dependence PARAMS ((rtx, rtx)); |
2080 | extern int anti_dependence PARAMS ((rtx, rtx)); | |
2081 | extern int output_dependence PARAMS ((rtx, rtx)); | |
2082 | extern void mark_constant_function PARAMS ((void)); | |
2083 | extern void init_alias_once PARAMS ((void)); | |
2084 | extern void init_alias_analysis PARAMS ((void)); | |
2085 | extern void end_alias_analysis PARAMS ((void)); | |
cdadb1dd | 2086 | extern rtx addr_side_effect_eval PARAMS ((rtx, int, int)); |
4c649323 | 2087 | |
0a1c58a2 JL |
2088 | /* In sibcall.c */ |
2089 | typedef enum { | |
2090 | sibcall_use_normal = 1, | |
2091 | sibcall_use_tail_recursion, | |
2092 | sibcall_use_sibcall | |
2093 | } sibcall_use_t; | |
2094 | ||
2095 | extern void optimize_sibling_and_tail_recursive_calls PARAMS ((void)); | |
2096 | extern void replace_call_placeholder PARAMS ((rtx, sibcall_use_t)); | |
2097 | ||
21b2cd73 | 2098 | #ifdef STACK_REGS |
cdadb1dd | 2099 | extern int stack_regs_mentioned PARAMS ((rtx insn)); |
21b2cd73 JH |
2100 | #endif |
2101 | ||
a157febd | 2102 | /* In toplev.c */ |
a157febd | 2103 | extern rtx stack_limit_rtx; |
dfdb644f | 2104 | |
7b82b5da | 2105 | /* In regrename.c */ |
7b82b5da | 2106 | extern void regrename_optimize PARAMS ((void)); |
8582c27b | 2107 | extern void copyprop_hardreg_forward PARAMS ((void)); |
7b82b5da | 2108 | |
4db384c9 | 2109 | /* In ifcvt.c */ |
2ea64f10 RH |
2110 | extern void if_convert PARAMS ((int)); |
2111 | ||
4db384c9 JH |
2112 | /* In predict.c */ |
2113 | extern void invert_br_probabilities PARAMS ((rtx)); | |
6ab16dd9 | 2114 | extern bool expensive_function_p PARAMS ((int)); |
88657302 | 2115 | #endif /* ! GCC_RTL_H */ |