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5e6908ea | 1 | /* Register Transfer Language (RTL) definitions for GCC |
af841dbd | 2 | Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
affad9a4 | 3 | 1999, 2000, 2001, 2002, 2003, 2004 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 | |
b9dcdee4 | 24 | #include "statistics.h" |
6f29feb1 | 25 | |
36edd3cc BS |
26 | struct function; |
27 | ||
6f29feb1 | 28 | #include "machmode.h" |
fd3acbb3 | 29 | #include "input.h" |
6f29feb1 JW |
30 | |
31 | #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ | |
1cfc3092 | 32 | #undef FLOAT /* Likewise. */ |
ac889e46 | 33 | #undef ABS /* Likewise. */ |
71ae9cc6 | 34 | #undef PC /* Likewise. */ |
6f29feb1 | 35 | |
173b24b9 | 36 | /* Value used by some passes to "recognize" noop moves as valid |
eebedaa5 | 37 | instructions. */ |
b5832b43 JH |
38 | #define NOOP_MOVE_INSN_CODE INT_MAX |
39 | ||
6f29feb1 JW |
40 | /* Register Transfer Language EXPRESSIONS CODES */ |
41 | ||
42 | #define RTX_CODE enum rtx_code | |
43 | enum rtx_code { | |
44 | ||
45 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , | |
46 | #include "rtl.def" /* rtl expressions are documented here */ | |
47 | #undef DEF_RTL_EXPR | |
48 | ||
6dc42e49 | 49 | LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for |
6f29feb1 | 50 | NUM_RTX_CODE. |
6dc42e49 | 51 | Assumes default enum value assignment. */ |
6f29feb1 | 52 | |
cf403648 | 53 | #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) |
6f29feb1 JW |
54 | /* The cast here, saves many elsewhere. */ |
55 | ||
ec8e098d PB |
56 | /* Register Transfer Language EXPRESSIONS CODE CLASSES */ |
57 | ||
58 | enum rtx_class { | |
59 | /* We check bit 0-1 of some rtx class codes in the predicates below. */ | |
60 | ||
61 | /* Bit 0 = comparison if 0, arithmetic is 1 | |
62 | Bit 1 = 1 if commutative. */ | |
63 | RTX_COMPARE, /* 0 */ | |
64 | RTX_COMM_COMPARE, | |
65 | RTX_BIN_ARITH, | |
66 | RTX_COMM_ARITH, | |
67 | ||
68 | /* Must follow the four preceding values. */ | |
69 | RTX_UNARY, /* 4 */ | |
70 | ||
71 | RTX_EXTRA, | |
72 | RTX_MATCH, | |
73 | RTX_INSN, | |
74 | ||
75 | /* Bit 0 = 1 if constant. */ | |
76 | RTX_OBJ, /* 8 */ | |
77 | RTX_CONST_OBJ, | |
78 | ||
79 | RTX_TERNARY, | |
80 | RTX_BITFIELD_OPS, | |
81 | RTX_AUTOINC | |
82 | }; | |
83 | ||
84 | #define RTX_OBJ_MASK (~1) | |
85 | #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) | |
86 | #define RTX_COMPARE_MASK (~1) | |
87 | #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) | |
88 | #define RTX_ARITHMETIC_MASK (~1) | |
89 | #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) | |
90 | #define RTX_BINARY_MASK (~3) | |
91 | #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) | |
92 | #define RTX_COMMUTATIVE_MASK (~2) | |
93 | #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) | |
94 | #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) | |
95 | #define RTX_EXPR_FIRST (RTX_COMPARE) | |
96 | #define RTX_EXPR_LAST (RTX_UNARY) | |
97 | ||
86460bab | 98 | extern const unsigned char rtx_length[NUM_RTX_CODE]; |
0f41302f | 99 | #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) |
6f29feb1 | 100 | |
86460bab | 101 | extern const char * const rtx_name[NUM_RTX_CODE]; |
0f41302f | 102 | #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) |
6f29feb1 | 103 | |
86460bab | 104 | extern const char * const rtx_format[NUM_RTX_CODE]; |
0f41302f | 105 | #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) |
6f29feb1 | 106 | |
ec8e098d | 107 | extern const enum rtx_class rtx_class[NUM_RTX_CODE]; |
0f41302f | 108 | #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) |
36a5eadd | 109 | |
e1de1560 | 110 | extern const unsigned char rtx_size[NUM_RTX_CODE]; |
36a5eadd | 111 | extern const unsigned char rtx_next[NUM_RTX_CODE]; |
6f29feb1 | 112 | \f |
33f7f353 JR |
113 | /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label |
114 | relative to which the offsets are calculated, as explained in rtl.def. */ | |
115 | typedef struct | |
116 | { | |
117 | /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ | |
118 | unsigned min_align: 8; | |
119 | /* Flags: */ | |
120 | unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ | |
173b24b9 RK |
121 | unsigned min_after_vec: 1; /* minimum address target label is |
122 | after the ADDR_DIFF_VEC. */ | |
123 | unsigned max_after_vec: 1; /* maximum address target label is | |
124 | after the ADDR_DIFF_VEC. */ | |
125 | unsigned min_after_base: 1; /* minimum address target label is | |
126 | after BASE. */ | |
127 | unsigned max_after_base: 1; /* maximum address target label is | |
128 | after BASE. */ | |
33f7f353 JR |
129 | /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ |
130 | unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ | |
131 | unsigned : 2; | |
132 | unsigned scale : 8; | |
133 | } addr_diff_vec_flags; | |
134 | ||
173b24b9 RK |
135 | /* Structure used to describe the attributes of a MEM. These are hashed |
136 | so MEMs that the same attributes share a data structure. This means | |
137 | they cannot be modified in place. If any element is nonzero, it means | |
138 | the value of the corresponding attribute is unknown. */ | |
184166b5 R |
139 | /* ALIGN and SIZE are the alignment and size of the MEM itself, |
140 | while EXPR can describe a larger underlying object, which might have a | |
141 | stricter alignment; OFFSET is the offset of the MEM within that object. */ | |
e2500fed | 142 | typedef struct mem_attrs GTY(()) |
173b24b9 | 143 | { |
eebedaa5 | 144 | HOST_WIDE_INT alias; /* Memory alias set. */ |
998d7deb | 145 | tree expr; /* expr corresponding to MEM. */ |
eebedaa5 | 146 | rtx offset; /* Offset from start of DECL, as CONST_INT. */ |
173b24b9 | 147 | rtx size; /* Size in bytes, as a CONST_INT. */ |
d022d93e | 148 | unsigned int align; /* Alignment of MEM in bits. */ |
173b24b9 RK |
149 | } mem_attrs; |
150 | ||
a560d4d4 JH |
151 | /* Structure used to describe the attributes of a REG in similar way as |
152 | mem_attrs does for MEM above. */ | |
153 | ||
154 | typedef struct reg_attrs GTY(()) | |
155 | { | |
156 | tree decl; /* decl corresponding to REG. */ | |
157 | HOST_WIDE_INT offset; /* Offset from start of DECL. */ | |
158 | } reg_attrs; | |
159 | ||
6f29feb1 JW |
160 | /* Common union for an element of an rtx. */ |
161 | ||
36a5eadd | 162 | union rtunion_def |
6f29feb1 JW |
163 | { |
164 | int rtint; | |
770ae6cc | 165 | unsigned int rtuint; |
3cce094d | 166 | const char *rtstr; |
2f78c311 ZW |
167 | rtx rtx; |
168 | rtvec rtvec; | |
6f29feb1 | 169 | enum machine_mode rttype; |
33f7f353 | 170 | addr_diff_vec_flags rt_addr_diff_vec_flags; |
eab5c70a | 171 | struct cselib_val_struct *rt_cselib; |
0dfa1860 | 172 | struct bitmap_head_def *rtbit; |
2f78c311 | 173 | tree rttree; |
e881bb1b | 174 | struct basic_block_def *bb; |
173b24b9 | 175 | mem_attrs *rtmem; |
a560d4d4 | 176 | reg_attrs *rtreg; |
36a5eadd GK |
177 | }; |
178 | typedef union rtunion_def rtunion; | |
6f29feb1 JW |
179 | |
180 | /* RTL expression ("rtx"). */ | |
181 | ||
3d7aafde | 182 | struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"), |
36a5eadd | 183 | chain_prev ("RTX_PREV (&%h)"))) |
6f29feb1 | 184 | { |
6f29feb1 | 185 | /* The kind of expression this is. */ |
c149cc37 | 186 | ENUM_BITFIELD(rtx_code) code: 16; |
18def38f | 187 | |
6f29feb1 | 188 | /* The kind of value the expression has. */ |
c149cc37 RL |
189 | ENUM_BITFIELD(machine_mode) mode : 8; |
190 | ||
5a63e069 JJ |
191 | /* 1 in a MEM if we should keep the alias set for this mem unchanged |
192 | when we access a component. | |
193 | 1 in a CALL_INSN if it is a sibling call. | |
0dc36574 ZW |
194 | 1 in a SET that is for a return. |
195 | In a CODE_LABEL, part of the two-bit alternate entry field. */ | |
6f29feb1 | 196 | unsigned int jump : 1; |
4da2eb6b RH |
197 | /* In a CODE_LABEL, part of the two-bit alternate entry field. |
198 | 1 in a MEM if it cannot trap. */ | |
6f29feb1 | 199 | unsigned int call : 1; |
5a63e069 JJ |
200 | /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. |
201 | 1 in a SUBREG if it references an unsigned object whose mode has been | |
202 | from a promoted to a wider mode. | |
6f29feb1 JW |
203 | 1 in a SYMBOL_REF if it addresses something in the per-function |
204 | constants pool. | |
5a63e069 | 205 | 1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call. |
7440af14 | 206 | 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */ |
6f29feb1 | 207 | unsigned int unchanging : 1; |
5a63e069 JJ |
208 | /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. |
209 | 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE | |
210 | if it has been deleted. | |
211 | 1 in a REG expression if corresponds to a variable declared by the user, | |
6f29feb1 | 212 | 0 for an internally generated temporary. |
5a63e069 JJ |
213 | 1 in a SUBREG with a negative value. |
214 | 1 in a LABEL_REF or in a REG_LABEL note for a non-local label. | |
215 | In a SYMBOL_REF, this flag is used for machine-specific purposes. */ | |
6f29feb1 | 216 | unsigned int volatil : 1; |
8358a974 | 217 | /* 1 in a MEM referring to a field of an aggregate. |
6f29feb1 JW |
218 | 0 if the MEM was a variable or the result of a * operator in C; |
219 | 1 if it was the result of a . or -> operator (on a struct) in C. | |
220 | 1 in a REG if the register is used only in exit code a loop. | |
f590cca1 | 221 | 1 in a SUBREG expression if was generated from a variable with a |
07be3989 | 222 | promoted mode. |
6f29feb1 JW |
223 | 1 in a CODE_LABEL if the label is used for nonlocal gotos |
224 | and must not be deleted even if its count is zero. | |
225 | 1 in a LABEL_REF if this is a reference to a label outside the | |
226 | current loop. | |
be202ec2 FS |
227 | 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled |
228 | together with the preceding insn. Valid only within sched. | |
6f29feb1 JW |
229 | 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and |
230 | from the target of a branch. Valid from reorg until end of compilation; | |
b53978a3 | 231 | cleared before used. |
ecd4a73b JR |
232 | 1 in an INSN, JUMP_INSN or CALL_INSN or related rtx if this insn is |
233 | dead code. Valid only during dead-code elimination phase; cleared | |
234 | before use. */ | |
6f29feb1 | 235 | unsigned int in_struct : 1; |
5a63e069 JJ |
236 | /* At the end of RTL generation, 1 if this rtx is used. This is used for |
237 | copying shared structure. See `unshare_all_rtl'. | |
f590cca1 | 238 | In a REG, this is not needed for that purpose, and used instead |
6f29feb1 | 239 | in `leaf_renumber_regs_insn'. |
5a63e069 | 240 | 1 in a SYMBOL_REF, means that emit_library_call |
6f29feb1 JW |
241 | has used it as the function. */ |
242 | unsigned int used : 1; | |
6de9cd9a DN |
243 | /* FIXME. This should be unused now that we do inlinining on trees, |
244 | but it is now being used for MEM_SCALAR_P. It should be renamed, | |
245 | or some other field should be overloaded. */ | |
6f29feb1 | 246 | unsigned integrated : 1; |
b664de3a | 247 | /* 1 in an INSN or a SET if this rtx is related to the call frame, |
c6df88cb | 248 | either changing how we compute the frame address or saving and |
f590cca1 | 249 | restoring registers in the prologue and epilogue. |
f8ad8d7c | 250 | 1 in a REG or MEM if it is a pointer. |
bd7cf17e JJ |
251 | 1 in a SYMBOL_REF if it addresses something in the per-function |
252 | constant string pool. */ | |
469ac993 | 253 | unsigned frame_related : 1; |
6de9cd9a DN |
254 | /* 1 in a REG or PARALLEL that is the current function's return value. |
255 | 1 in a SYMBOL_REF for a weak symbol. */ | |
256 | unsigned return_val : 1; | |
0a25f1f5 | 257 | |
6f29feb1 JW |
258 | /* The first element of the operands of this rtx. |
259 | The number of operands and their types are controlled | |
260 | by the `code' field, according to rtl.def. */ | |
e1de1560 RS |
261 | union u { |
262 | rtunion fld[1]; | |
263 | HOST_WIDE_INT hwint[1]; | |
264 | } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; | |
2f78c311 | 265 | }; |
6f29feb1 | 266 | |
e1de1560 RS |
267 | /* The size in bytes of an rtx header (code, mode and flags). */ |
268 | #define RTX_HDR_SIZE offsetof (struct rtx_def, u) | |
269 | ||
270 | /* The size in bytes of an rtx with code CODE. */ | |
271 | #define RTX_SIZE(CODE) rtx_size[CODE] | |
272 | ||
6f29feb1 JW |
273 | #define NULL_RTX (rtx) 0 |
274 | ||
36a5eadd GK |
275 | /* The "next" and "previous" RTX, relative to this one. */ |
276 | ||
277 | #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ | |
278 | : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) | |
279 | ||
280 | /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. | |
281 | */ | |
282 | #define RTX_PREV(X) ((GET_CODE (X) == INSN \ | |
283 | || GET_CODE (X) == CALL_INSN \ | |
284 | || GET_CODE (X) == JUMP_INSN \ | |
285 | || GET_CODE (X) == NOTE \ | |
286 | || GET_CODE (X) == BARRIER \ | |
287 | || GET_CODE (X) == CODE_LABEL) \ | |
288 | && PREV_INSN (X) != NULL \ | |
289 | && NEXT_INSN (PREV_INSN (X)) == X \ | |
290 | ? PREV_INSN (X) : NULL) | |
291 | ||
6f29feb1 JW |
292 | /* Define macros to access the `code' field of the rtx. */ |
293 | ||
dbbbbf3b | 294 | #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) |
7e7c843f | 295 | #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) |
6f29feb1 | 296 | |
dbbbbf3b | 297 | #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) |
7e7c843f | 298 | #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) |
6f29feb1 | 299 | |
6f29feb1 JW |
300 | /* RTL vector. These appear inside RTX's when there is a need |
301 | for a variable number of things. The principle use is inside | |
302 | PARALLEL expressions. */ | |
303 | ||
e2500fed | 304 | struct rtvec_def GTY(()) { |
e9a25f70 | 305 | int num_elem; /* number of elements */ |
e2500fed | 306 | rtx GTY ((length ("%h.num_elem"))) elem[1]; |
2f78c311 | 307 | }; |
6f29feb1 JW |
308 | |
309 | #define NULL_RTVEC (rtvec) 0 | |
310 | ||
311 | #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) | |
e9a25f70 | 312 | #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) |
6f29feb1 | 313 | |
b53978a3 | 314 | /* Predicate yielding nonzero iff X is an rtl for a register. */ |
6f29feb1 JW |
315 | #define REG_P(X) (GET_CODE (X) == REG) |
316 | ||
b53978a3 JO |
317 | /* Predicate yielding nonzero iff X is a label insn. */ |
318 | #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) | |
319 | ||
320 | /* Predicate yielding nonzero iff X is a jump insn. */ | |
321 | #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) | |
322 | ||
323 | /* Predicate yielding nonzero iff X is a note insn. */ | |
324 | #define NOTE_P(X) (GET_CODE (X) == NOTE) | |
325 | ||
326 | /* Predicate yielding nonzero iff X is a barrier insn. */ | |
327 | #define BARRIER_P(X) (GET_CODE (X) == BARRIER) | |
328 | ||
329 | /* Predicate yielding nonzero iff X is a data for a jump table. */ | |
330 | #define JUMP_TABLE_DATA_P(INSN) \ | |
331 | (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ | |
332 | GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) | |
333 | ||
ec8e098d PB |
334 | |
335 | /* 1 if X is an insn. */ | |
336 | #define INSN_P(X) \ | |
337 | (GET_RTX_CLASS (GET_CODE(X)) == RTX_INSN) | |
338 | ||
339 | /* 1 if X is a unary operator. */ | |
340 | ||
341 | #define UNARY_P(X) \ | |
342 | (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) | |
343 | ||
344 | /* 1 if X is a binary operator. */ | |
345 | ||
346 | #define BINARY_P(X) \ | |
347 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) | |
348 | ||
349 | /* 1 if X is an arithmetic operator. */ | |
350 | ||
351 | #define ARITHMETIC_P(X) \ | |
352 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ | |
353 | == RTX_ARITHMETIC_RESULT) | |
354 | ||
355 | /* 1 if X is an arithmetic operator. */ | |
356 | ||
357 | #define COMMUTATIVE_ARITH_P(X) \ | |
358 | (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) | |
359 | ||
360 | /* 1 if X is a commutative arithmetic operator or a comparison operator. | |
361 | These two are sometimes selected together because it is possible to | |
362 | swap the two operands. */ | |
363 | ||
364 | #define SWAPPABLE_OPERANDS_P(X) \ | |
365 | ((1 << GET_RTX_CLASS (GET_CODE (X))) \ | |
366 | & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ | |
367 | | (1 << RTX_COMPARE))) | |
368 | ||
369 | /* 1 if X is a non-commutative operator. */ | |
370 | ||
371 | #define NON_COMMUTATIVE_P(X) \ | |
372 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ | |
373 | == RTX_NON_COMMUTATIVE_RESULT) | |
374 | ||
375 | /* 1 if X is a commutative operator on integers. */ | |
376 | ||
377 | #define COMMUTATIVE_P(X) \ | |
378 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ | |
379 | == RTX_COMMUTATIVE_RESULT) | |
380 | ||
381 | /* 1 if X is a relational operator. */ | |
382 | ||
383 | #define COMPARISON_P(X) \ | |
384 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) | |
385 | ||
6f29feb1 JW |
386 | /* 1 if X is a constant value that is an integer. */ |
387 | ||
388 | #define CONSTANT_P(X) \ | |
ec8e098d | 389 | (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ \ |
6de9cd9a | 390 | || GET_CODE (X) == CONST_VECTOR) |
6f29feb1 | 391 | |
ec8e098d PB |
392 | /* 1 if X can be used to represent an object. */ |
393 | #define OBJECT_P(X) \ | |
394 | ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) | |
395 | ||
6f29feb1 JW |
396 | /* General accessor macros for accessing the fields of an rtx. */ |
397 | ||
f4524c9e | 398 | #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) |
ef178af3 ZW |
399 | /* The bit with a star outside the statement expr and an & inside is |
400 | so that N can be evaluated only once. */ | |
8784fdcd | 401 | #define RTL_CHECK1(RTX, N, C1) __extension__ \ |
d544bc39 KG |
402 | (*({ rtx const _rtx = (RTX); const int _n = (N); \ |
403 | const enum rtx_code _code = GET_CODE (_rtx); \ | |
ef178af3 | 404 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ |
f52eda29 GS |
405 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ |
406 | __FUNCTION__); \ | |
ef178af3 | 407 | if (GET_RTX_FORMAT(_code)[_n] != C1) \ |
f52eda29 GS |
408 | rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ |
409 | __FUNCTION__); \ | |
e1de1560 | 410 | &_rtx->u.fld[_n]; })) |
ef178af3 | 411 | |
8784fdcd | 412 | #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ |
d544bc39 KG |
413 | (*({ rtx const _rtx = (RTX); const int _n = (N); \ |
414 | const enum rtx_code _code = GET_CODE (_rtx); \ | |
ef178af3 | 415 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ |
f52eda29 GS |
416 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ |
417 | __FUNCTION__); \ | |
ef178af3 ZW |
418 | if (GET_RTX_FORMAT(_code)[_n] != C1 \ |
419 | && GET_RTX_FORMAT(_code)[_n] != C2) \ | |
420 | rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ | |
fbfc1192 | 421 | __FUNCTION__); \ |
e1de1560 | 422 | &_rtx->u.fld[_n]; })) |
ef178af3 | 423 | |
8784fdcd | 424 | #define RTL_CHECKC1(RTX, N, C) __extension__ \ |
d544bc39 | 425 | (*({ rtx const _rtx = (RTX); const int _n = (N); \ |
f52eda29 GS |
426 | if (GET_CODE (_rtx) != (C)) \ |
427 | rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ | |
428 | __FUNCTION__); \ | |
e1de1560 | 429 | &_rtx->u.fld[_n]; })) |
83ab3839 | 430 | |
8784fdcd | 431 | #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ |
d544bc39 KG |
432 | (*({ rtx const _rtx = (RTX); const int _n = (N); \ |
433 | const enum rtx_code _code = GET_CODE (_rtx); \ | |
f52eda29 GS |
434 | if (_code != (C1) && _code != (C2)) \ |
435 | rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ | |
436 | __FUNCTION__); \ | |
e1de1560 | 437 | &_rtx->u.fld[_n]; })) |
83ab3839 | 438 | |
8784fdcd | 439 | #define RTVEC_ELT(RTVEC, I) __extension__ \ |
d544bc39 | 440 | (*({ rtvec const _rtvec = (RTVEC); const int _i = (I); \ |
ef178af3 ZW |
441 | if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ |
442 | rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ | |
fbfc1192 | 443 | __FUNCTION__); \ |
ef178af3 ZW |
444 | &_rtvec->elem[_i]; })) |
445 | ||
e1de1560 RS |
446 | #define XWINT(RTX, N) __extension__ \ |
447 | (*({ rtx const _rtx = (RTX); const int _n = (N); \ | |
448 | const enum rtx_code _code = GET_CODE (_rtx); \ | |
449 | if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ | |
450 | rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ | |
451 | __FUNCTION__); \ | |
452 | if (GET_RTX_FORMAT(_code)[_n] != 'w') \ | |
453 | rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ | |
454 | __FUNCTION__); \ | |
455 | &_rtx->u.hwint[_n]; })) | |
456 | ||
457 | #define XCWINT(RTX, N, C) __extension__ \ | |
458 | (*({ rtx const _rtx = (RTX); \ | |
459 | if (GET_CODE (_rtx) != (C)) \ | |
460 | rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ | |
461 | __FUNCTION__); \ | |
462 | &_rtx->u.hwint[N]; })) | |
463 | ||
0c20a65f AJ |
464 | extern void rtl_check_failed_bounds (rtx, int, const char *, int, |
465 | const char *) | |
ef178af3 | 466 | ATTRIBUTE_NORETURN; |
0c20a65f AJ |
467 | extern void rtl_check_failed_type1 (rtx, int, int, const char *, int, |
468 | const char *) | |
ef178af3 | 469 | ATTRIBUTE_NORETURN; |
0c20a65f AJ |
470 | extern void rtl_check_failed_type2 (rtx, int, int, int, const char *, |
471 | int, const char *) | |
ef178af3 | 472 | ATTRIBUTE_NORETURN; |
0c20a65f AJ |
473 | extern void rtl_check_failed_code1 (rtx, enum rtx_code, const char *, |
474 | int, const char *) | |
83ab3839 | 475 | ATTRIBUTE_NORETURN; |
0c20a65f AJ |
476 | extern void rtl_check_failed_code2 (rtx, enum rtx_code, enum rtx_code, |
477 | const char *, int, const char *) | |
83ab3839 | 478 | ATTRIBUTE_NORETURN; |
0c20a65f AJ |
479 | extern void rtvec_check_failed_bounds (rtvec, int, const char *, int, |
480 | const char *) | |
ef178af3 ZW |
481 | ATTRIBUTE_NORETURN; |
482 | ||
f4524c9e | 483 | #else /* not ENABLE_RTL_CHECKING */ |
ef178af3 | 484 | |
e1de1560 RS |
485 | #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) |
486 | #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) | |
487 | #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) | |
488 | #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) | |
83ab3839 | 489 | #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) |
e1de1560 RS |
490 | #define XWINT(RTX, N) ((RTX)->u.hwint[N]) |
491 | #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) | |
ef178af3 ZW |
492 | |
493 | #endif | |
494 | ||
5a63e069 JJ |
495 | /* General accessor macros for accessing the flags of an rtx. */ |
496 | ||
497 | /* Access an individual rtx flag, with no checking of any kind. */ | |
498 | #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) | |
499 | ||
65212b66 | 500 | #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) |
2d4cc6a7 | 501 | #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ |
5a63e069 JJ |
502 | ({ rtx const _rtx = (RTX); \ |
503 | if (GET_CODE(_rtx) != C1) \ | |
2d4cc6a7 | 504 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 505 | __FUNCTION__); \ |
5a63e069 JJ |
506 | _rtx; }) |
507 | ||
2d4cc6a7 | 508 | #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ |
5a63e069 JJ |
509 | ({ rtx const _rtx = (RTX); \ |
510 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ | |
2d4cc6a7 | 511 | rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ |
3d7aafde | 512 | __FUNCTION__); \ |
5a63e069 JJ |
513 | _rtx; }) |
514 | ||
2d4cc6a7 | 515 | #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ |
5a63e069 | 516 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 517 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 | 518 | && GET_CODE(_rtx) != C3) \ |
2d4cc6a7 | 519 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 520 | __FUNCTION__); \ |
5a63e069 JJ |
521 | _rtx; }) |
522 | ||
2d4cc6a7 | 523 | #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ |
5a63e069 | 524 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 525 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 | 526 | && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ |
2d4cc6a7 | 527 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 528 | __FUNCTION__); \ |
5a63e069 JJ |
529 | _rtx; }) |
530 | ||
2d4cc6a7 | 531 | #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ |
5a63e069 | 532 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 533 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 JJ |
534 | && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ |
535 | && GET_CODE(_rtx) != C5) \ | |
2d4cc6a7 | 536 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 537 | __FUNCTION__); \ |
5a63e069 JJ |
538 | _rtx; }) |
539 | ||
2d4cc6a7 JJ |
540 | #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ |
541 | __extension__ \ | |
5a63e069 | 542 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 543 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 JJ |
544 | && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ |
545 | && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ | |
2d4cc6a7 | 546 | rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ |
3d7aafde | 547 | __FUNCTION__); \ |
5a63e069 JJ |
548 | _rtx; }) |
549 | ||
2d4cc6a7 JJ |
550 | #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ |
551 | __extension__ \ | |
5a63e069 | 552 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 553 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 JJ |
554 | && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ |
555 | && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ | |
556 | && GET_CODE(_rtx) != C7) \ | |
2d4cc6a7 | 557 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 558 | __FUNCTION__); \ |
5a63e069 JJ |
559 | _rtx; }) |
560 | ||
2d4cc6a7 JJ |
561 | #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ |
562 | __extension__ \ | |
5a63e069 | 563 | ({ rtx const _rtx = (RTX); \ |
3d7aafde | 564 | if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ |
5a63e069 JJ |
565 | && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ |
566 | && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ | |
567 | && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ | |
2d4cc6a7 | 568 | rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ |
3d7aafde | 569 | __FUNCTION__); \ |
5a63e069 JJ |
570 | _rtx; }) |
571 | ||
0c20a65f AJ |
572 | extern void rtl_check_failed_flag (const char *, rtx, const char *, |
573 | int, const char *) | |
5a63e069 JJ |
574 | ATTRIBUTE_NORETURN |
575 | ; | |
576 | ||
577 | #else /* not ENABLE_RTL_FLAG_CHECKING */ | |
578 | ||
2d4cc6a7 JJ |
579 | #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) |
580 | #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) | |
581 | #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) | |
582 | #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) | |
3d7aafde | 583 | #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) |
2d4cc6a7 JJ |
584 | #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) |
585 | #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) | |
586 | #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) | |
5a63e069 JJ |
587 | #endif |
588 | ||
589 | #define CLEAR_RTX_FLAGS(RTX) \ | |
590 | do { \ | |
591 | rtx const _rtx = (RTX); \ | |
592 | _rtx->call = 0; \ | |
593 | _rtx->frame_related = 0; \ | |
594 | _rtx->in_struct = 0; \ | |
5a63e069 JJ |
595 | _rtx->jump = 0; \ |
596 | _rtx->unchanging = 0; \ | |
597 | _rtx->used = 0; \ | |
598 | _rtx->volatil = 0; \ | |
6de9cd9a | 599 | _rtx->unused_flag = 0; \ |
5a63e069 JJ |
600 | } while (0) |
601 | ||
f52eda29 GS |
602 | #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rtint) |
603 | #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rtstr) | |
604 | #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rtx) | |
605 | #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rtvec) | |
606 | #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rttype) | |
607 | #define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rtbit) | |
608 | #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rttree) | |
609 | #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').bb) | |
610 | #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rtstr) | |
ef178af3 ZW |
611 | |
612 | #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) | |
613 | #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) | |
614 | ||
e1de1560 | 615 | /* These are like XINT, etc. except that they expect a '0' field instead |
ef178af3 ZW |
616 | of the normal type code. */ |
617 | ||
f52eda29 GS |
618 | #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtint) |
619 | #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtuint) | |
620 | #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtstr) | |
621 | #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtx) | |
622 | #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtvec) | |
623 | #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttype) | |
624 | #define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtbit) | |
625 | #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttree) | |
626 | #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').bb) | |
627 | #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) | |
628 | #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) | |
a560d4d4 JH |
629 | #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rtmem) |
630 | #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rtreg) | |
f52eda29 | 631 | |
e1de1560 RS |
632 | /* Access a '0' field with any type. */ |
633 | #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') | |
634 | ||
f52eda29 GS |
635 | #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtint) |
636 | #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtuint) | |
637 | #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtstr) | |
638 | #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtx) | |
639 | #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtvec) | |
640 | #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttype) | |
641 | #define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtbit) | |
642 | #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttree) | |
643 | #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).bb) | |
644 | #define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_addr_diff_vec_flags) | |
645 | #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) | |
83ab3839 RH |
646 | |
647 | #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) | |
648 | #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) | |
649 | ||
f52eda29 | 650 | #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rtx) |
6f29feb1 JW |
651 | \f |
652 | /* ACCESS MACROS for particular fields of insns. */ | |
653 | ||
654 | /* Holds a unique number for each insn. | |
655 | These are not necessarily sequentially increasing. */ | |
f52eda29 | 656 | #define INSN_UID(INSN) XINT (INSN, 0) |
6f29feb1 JW |
657 | |
658 | /* Chain insns together in sequence. */ | |
f52eda29 GS |
659 | #define PREV_INSN(INSN) XEXP (INSN, 1) |
660 | #define NEXT_INSN(INSN) XEXP (INSN, 2) | |
6f29feb1 | 661 | |
ba4f7968 | 662 | #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) |
0435312e | 663 | #define INSN_LOCATOR(INSN) XINT (INSN, 4) |
6f29feb1 | 664 | /* The body of an insn. */ |
ba4f7968 | 665 | #define PATTERN(INSN) XEXP (INSN, 5) |
6f29feb1 JW |
666 | |
667 | /* Code number of instruction, from when it was recognized. | |
668 | -1 means this instruction has not been recognized yet. */ | |
ba4f7968 | 669 | #define INSN_CODE(INSN) XINT (INSN, 6) |
6f29feb1 JW |
670 | |
671 | /* Set up in flow.c; empty before then. | |
672 | Holds a chain of INSN_LIST rtx's whose first operands point at | |
673 | previous insns with direct data-flow connections to this one. | |
674 | That means that those insns set variables whose next use is in this insn. | |
675 | They are always in the same basic block as this insn. */ | |
ba4f7968 | 676 | #define LOG_LINKS(INSN) XEXP(INSN, 7) |
6f29feb1 | 677 | |
2d4cc6a7 JJ |
678 | #define RTX_UNCHANGING_P(RTX) \ |
679 | (RTL_FLAG_CHECK3("RTX_UNCHANGING_P", (RTX), REG, MEM, CONCAT)->unchanging) | |
680 | #define RTX_FRAME_RELATED_P(RTX) \ | |
681 | (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \ | |
682 | JUMP_INSN, BARRIER, SET)->frame_related) | |
683 | ||
684 | /* 1 if RTX is an insn that has been deleted. */ | |
685 | #define INSN_DELETED_P(RTX) \ | |
686 | (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \ | |
687 | CODE_LABEL, BARRIER, NOTE)->volatil) | |
688 | ||
689 | /* 1 if RTX is a call to a const or pure function. */ | |
690 | #define CONST_OR_PURE_CALL_P(RTX) \ | |
691 | (RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE, \ | |
692 | EXPR_LIST)->unchanging) | |
693 | ||
694 | /* 1 if RTX is a call_insn for a sibling call. */ | |
695 | #define SIBLING_CALL_P(RTX) \ | |
696 | (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) | |
697 | ||
7440af14 | 698 | /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ |
2d4cc6a7 | 699 | #define INSN_ANNULLED_BRANCH_P(RTX) \ |
7440af14 | 700 | (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging) |
2d4cc6a7 JJ |
701 | |
702 | /* 1 if RTX is an insn that is dead code. Valid only for dead-code | |
703 | elimination phase. */ | |
704 | #define INSN_DEAD_CODE_P(RTX) \ | |
ecd4a73b | 705 | (RTL_FLAG_CHECK3("INSN_DEAD_CODE_P", (RTX), INSN, CALL_INSN, JUMP_INSN)->in_struct) |
2d4cc6a7 JJ |
706 | |
707 | /* 1 if RTX is an insn in a delay slot and is from the target of the branch. | |
708 | If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be | |
6f29feb1 JW |
709 | executed if the branch is taken. For annulled branches with this bit |
710 | clear, the insn should be executed only if the branch is not taken. */ | |
2d4cc6a7 | 711 | #define INSN_FROM_TARGET_P(RTX) \ |
cf40ea15 | 712 | (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) |
6f29feb1 | 713 | |
f590cca1 RH |
714 | #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) |
715 | ||
716 | #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) | |
717 | ||
6f29feb1 | 718 | /* Holds a list of notes on what this insn does to various REGs. |
f590cca1 RH |
719 | It is a chain of EXPR_LIST rtx's, where the second operand is the |
720 | chain pointer and the first operand is the REG being described. | |
6f29feb1 | 721 | The mode field of the EXPR_LIST contains not a real machine mode |
f590cca1 | 722 | but a value from enum reg_note. */ |
6f29feb1 | 723 | |
ba4f7968 | 724 | #define REG_NOTES(INSN) XEXP(INSN, 8) |
6f29feb1 JW |
725 | |
726 | /* Don't forget to change reg_note_name in rtl.c. */ | |
f590cca1 RH |
727 | enum reg_note |
728 | { | |
729 | /* The value in REG dies in this insn (i.e., it is not needed past | |
730 | this insn). If REG is set in this insn, the REG_DEAD note may, | |
731 | but need not, be omitted. */ | |
732 | REG_DEAD = 1, | |
733 | ||
734 | /* The REG is autoincremented or autodecremented. */ | |
735 | REG_INC, | |
736 | ||
737 | /* Describes the insn as a whole; it says that the insn sets a register | |
738 | to a constant value or to be equivalent to a memory address. If the | |
739 | register is spilled to the stack then the constant value should be | |
740 | substituted for it. The contents of the REG_EQUIV is the constant | |
741 | value or memory address, which may be different from the source of | |
742 | the SET although it has the same value. A REG_EQUIV note may also | |
743 | appear on an insn which copies a register parameter to a pseudo-register, | |
744 | if there is a memory address which could be used to hold that | |
745 | pseudo-register throughout the function. */ | |
be1bb652 | 746 | REG_EQUIV, |
f590cca1 RH |
747 | |
748 | /* Like REG_EQUIV except that the destination is only momentarily equal | |
749 | to the specified rtx. Therefore, it cannot be used for substitution; | |
750 | but it can be used for cse. */ | |
751 | REG_EQUAL, | |
752 | ||
f590cca1 RH |
753 | /* This insn copies the return-value of a library call out of the hard reg |
754 | for return values. This note is actually an INSN_LIST and it points to | |
755 | the first insn involved in setting up arguments for the call. flow.c | |
756 | uses this to delete the entire library call when its result is dead. */ | |
757 | REG_RETVAL, | |
758 | ||
759 | /* The inverse of REG_RETVAL: it goes on the first insn of the library call | |
be1bb652 RH |
760 | and points at the one that has the REG_RETVAL. This note is also an |
761 | INSN_LIST. */ | |
f590cca1 RH |
762 | REG_LIBCALL, |
763 | ||
764 | /* The register is always nonnegative during the containing loop. This is | |
765 | used in branches so that decrement and branch instructions terminating | |
766 | on zero can be matched. There must be an insn pattern in the md file | |
767 | named `decrement_and_branch_until_zero' or else this will never be added | |
768 | to any instructions. */ | |
769 | REG_NONNEG, | |
770 | ||
771 | /* There is no conflict *after this insn* between the register in the note | |
772 | and the destination of this insn. */ | |
773 | REG_NO_CONFLICT, | |
774 | ||
775 | /* Identifies a register set in this insn and never used. */ | |
776 | REG_UNUSED, | |
777 | ||
778 | /* REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use CC0, | |
779 | respectively. Normally, these are required to be consecutive insns, but | |
780 | we permit putting a cc0-setting insn in the delay slot of a branch as | |
781 | long as only one copy of the insn exists. In that case, these notes | |
782 | point from one to the other to allow code generation to determine what | |
be1bb652 RH |
783 | any require information and to properly update CC_STATUS. These notes |
784 | are INSN_LISTs. */ | |
f590cca1 RH |
785 | REG_CC_SETTER, REG_CC_USER, |
786 | ||
787 | /* Points to a CODE_LABEL. Used by non-JUMP_INSNs to say that the | |
3d7aafde | 788 | CODE_LABEL contained in the REG_LABEL note is used by the insn. |
be1bb652 | 789 | This note is an INSN_LIST. */ |
f590cca1 RH |
790 | REG_LABEL, |
791 | ||
792 | /* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent | |
793 | write-after-read and write-after-write dependencies respectively. | |
794 | Data dependencies, which are the only type of LOG_LINK created by | |
795 | flow, are represented by a 0 reg note kind. */ | |
796 | REG_DEP_ANTI, REG_DEP_OUTPUT, | |
797 | ||
4db384c9 JH |
798 | /* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs. |
799 | It has an integer value. For jumps, it is the probability that this is a | |
800 | taken branch. For calls, it is the probability that this call won't | |
801 | return. */ | |
f590cca1 RH |
802 | REG_BR_PROB, |
803 | ||
6e885ee3 ZD |
804 | /* REG_VALUE_PROFILE is attached when the profile is read in to an insn |
805 | before that the code to profile the value is inserted. It contains | |
806 | the results of profiling. */ | |
807 | REG_VALUE_PROFILE, | |
808 | ||
f590cca1 RH |
809 | /* Attached to a call insn; indicates that the call is malloc-like and |
810 | that the pointer returned cannot alias anything else. */ | |
811 | REG_NOALIAS, | |
812 | ||
813 | /* Used to optimize rtl generated by dynamic stack allocations for targets | |
814 | where SETJMP_VIA_SAVE_AREA is true. */ | |
815 | REG_SAVE_AREA, | |
816 | ||
4db384c9 JH |
817 | /* REG_BR_PRED is attached to JUMP_INSNs and CALL_INSNSs. It contains |
818 | CONCAT of two integer value. First specifies the branch predictor | |
819 | that added the note, second specifies the predicted hitrate of branch | |
820 | in the same format as REG_BR_PROB note uses. */ | |
f590cca1 RH |
821 | REG_BR_PRED, |
822 | ||
823 | /* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex | |
824 | for DWARF to interpret what they imply. The attached rtx is used | |
825 | instead of intuition. */ | |
826 | REG_FRAME_RELATED_EXPR, | |
827 | ||
828 | /* Indicates that REG holds the exception context for the function. | |
829 | This context is shared by inline functions, so the code to acquire | |
830 | the real exception context is delayed until after inlining. */ | |
831 | REG_EH_CONTEXT, | |
832 | ||
833 | /* Indicates what exception region an INSN belongs in. This is used to | |
834 | indicate what region to which a call may throw. REGION 0 indicates | |
835 | that a call cannot throw at all. REGION -1 indicates that it cannot | |
836 | throw, nor will it execute a non-local goto. */ | |
837 | REG_EH_REGION, | |
838 | ||
f590cca1 | 839 | /* Used by haifa-sched to save NOTE_INSN notes across scheduling. */ |
8cd8f856 GK |
840 | REG_SAVE_NOTE, |
841 | ||
842 | /* Indicates that this insn (which is part of the prologue) computes | |
843 | a value which might not be used later, and if so it's OK to delete | |
3d7aafde | 844 | the insn. Normally, deleting any insn in the prologue is an error. |
8cd8f856 | 845 | At present the parameter is unused and set to (const_int 0). */ |
ca3920ad JW |
846 | REG_MAYBE_DEAD, |
847 | ||
848 | /* Indicates that a call does not return. */ | |
4b01bd16 RH |
849 | REG_NORETURN, |
850 | ||
3d7aafde | 851 | /* Indicates that an indirect jump is a non-local goto instead of a |
4b01bd16 | 852 | computed goto. */ |
570a98eb JH |
853 | REG_NON_LOCAL_GOTO, |
854 | ||
750054a2 CT |
855 | /* Indicates that a jump crosses between hot and cold sections |
856 | in a (partitioned) assembly or .o file, and therefore should not be | |
857 | reduced to a simpler jump by optimizations. */ | |
858 | REG_CROSSING_JUMP, | |
859 | ||
570a98eb JH |
860 | /* This kind of note is generated at each to `setjmp', |
861 | and similar functions that can return twice. */ | |
9d98f8f9 JH |
862 | REG_SETJMP, |
863 | ||
864 | /* Indicate calls that always returns. */ | |
4a8d0c9c RH |
865 | REG_ALWAYS_RETURN, |
866 | ||
867 | /* Indicate that the memory load references a vtable. The expression | |
868 | is of the form (plus (symbol_ref vtable_sym) (const_int offset)). */ | |
869 | REG_VTABLE_REF | |
f590cca1 RH |
870 | }; |
871 | ||
7ae21caf DE |
872 | /* The base value for branch probability notes. */ |
873 | #define REG_BR_PROB_BASE 10000 | |
6f29feb1 JW |
874 | |
875 | /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ | |
876 | #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) | |
f52eda29 GS |
877 | #define PUT_REG_NOTE_KIND(LINK, KIND) \ |
878 | PUT_MODE (LINK, (enum machine_mode) (KIND)) | |
6f29feb1 JW |
879 | |
880 | /* Names for REG_NOTE's in EXPR_LIST insn's. */ | |
881 | ||
1f9a015e | 882 | extern const char * const reg_note_name[]; |
0f41302f | 883 | #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) |
6f29feb1 | 884 | |
e51c6661 RK |
885 | /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of |
886 | USE and CLOBBER expressions. | |
887 | USE expressions list the registers filled with arguments that | |
888 | are passed to the function. | |
889 | CLOBBER expressions document the registers explicitly clobbered | |
890 | by this CALL_INSN. | |
891 | Pseudo registers can not be mentioned in this list. */ | |
ba4f7968 | 892 | #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 9) |
e51c6661 | 893 | |
6f29feb1 JW |
894 | /* The label-number of a code-label. The assembler label |
895 | is made from `L' and the label-number printed in decimal. | |
896 | Label numbers are unique in a compilation. */ | |
ba4f7968 | 897 | #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) |
6f29feb1 JW |
898 | |
899 | #define LINE_NUMBER NOTE | |
900 | ||
0dfa1860 MM |
901 | /* In a NOTE that is a line number, this is a string for the file name that the |
902 | line is in. We use the same field to record block numbers temporarily in | |
903 | NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts | |
904 | between ints and pointers if we use a different macro for the block number.) | |
63f4a88e | 905 | */ |
6f29feb1 | 906 | |
fd3acbb3 | 907 | /* Opaque data. */ |
dd107e66 | 908 | #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) |
3d7aafde | 909 | #define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 4, NOTE) |
ba4f7968 JH |
910 | #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) |
911 | #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) | |
ba4f7968 JH |
912 | #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) |
913 | #define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 4, NOTE) | |
914 | #define NOTE_PREDICTION(INSN) XCINT (INSN, 4, NOTE) | |
dad482e6 | 915 | #define NOTE_PRECONDITIONED(INSN) XCINT (INSN, 4, NOTE) |
014a1138 | 916 | #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) |
0dfa1860 | 917 | |
6f29feb1 JW |
918 | /* In a NOTE that is a line number, this is the line number. |
919 | Other kinds of NOTEs are identified by negative numbers here. */ | |
ba4f7968 | 920 | #define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE) |
6f29feb1 | 921 | |
589ca5cb | 922 | /* Nonzero if INSN is a note marking the beginning of a basic block. */ |
3d7aafde | 923 | #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ |
589ca5cb MM |
924 | (GET_CODE (INSN) == NOTE \ |
925 | && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK) | |
926 | ||
969d70ca | 927 | /* Algorithm and flags for prediction. */ |
ba4f7968 JH |
928 | #define NOTE_PREDICTION_ALG(INSN) (XCINT(INSN, 4, NOTE)>>8) |
929 | #define NOTE_PREDICTION_FLAGS(INSN) (XCINT(INSN, 4, NOTE)&0xff) | |
969d70ca JH |
930 | #define NOTE_PREDICT(ALG,FLAGS) ((ALG<<8)+(FLAGS)) |
931 | ||
014a1138 JZ |
932 | /* Variable declaration and the location of a variable. */ |
933 | #define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \ | |
934 | 0, VAR_LOCATION)) | |
935 | #define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \ | |
936 | 1, VAR_LOCATION)) | |
937 | ||
6f29feb1 | 938 | /* Codes that appear in the NOTE_LINE_NUMBER field |
a31efb86 | 939 | for kinds of notes that are not line numbers. |
6f29feb1 | 940 | |
a31efb86 DE |
941 | Notice that we do not try to use zero here for any of |
942 | the special note codes because sometimes the source line | |
943 | actually can be zero! This happens (for example) when we | |
944 | are generating code for the per-translation-unit constructor | |
945 | and destructor routines for some C++ translation unit. | |
946 | ||
947 | If you should change any of the following values, or if you | |
948 | should add a new value here, don't forget to change the | |
949 | note_insn_name array in rtl.c. */ | |
6f29feb1 | 950 | |
d636c18c RH |
951 | enum insn_note |
952 | { | |
953 | /* Keep all of these numbers negative. Adjust as needed. */ | |
954 | NOTE_INSN_BIAS = -100, | |
955 | ||
956 | /* This note is used to get rid of an insn | |
957 | when it isn't safe to patch the insn out of the chain. */ | |
958 | NOTE_INSN_DELETED, | |
959 | ||
960 | /* These are used to mark the beginning and end of a lexical block. | |
961 | See NOTE_BLOCK, identify_blocks and reorder_blocks. */ | |
962 | NOTE_INSN_BLOCK_BEG, | |
963 | NOTE_INSN_BLOCK_END, | |
964 | ||
965 | /* These mark the extremes of a loop. */ | |
966 | NOTE_INSN_LOOP_BEG, | |
967 | NOTE_INSN_LOOP_END, | |
968 | ||
969 | /* Generated at the place in a loop that `continue' jumps to. */ | |
970 | NOTE_INSN_LOOP_CONT, | |
971 | /* Generated at the start of a duplicated exit test. */ | |
972 | NOTE_INSN_LOOP_VTOP, | |
973 | ||
e803a64b RH |
974 | /* Generated at the end of a conditional at the top of the loop. |
975 | This is used to perform a lame form of loop rotation in lieu | |
976 | of actually understanding the loop structure. The note is | |
977 | discarded after rotation is complete. */ | |
978 | NOTE_INSN_LOOP_END_TOP_COND, | |
979 | ||
d636c18c RH |
980 | /* This kind of note is generated at the end of the function body, |
981 | just before the return insn or return label. In an optimizing | |
982 | compilation it is deleted by the first jump optimization, after | |
983 | enabling that optimizer to determine whether control can fall | |
984 | off the end of the function body without a return statement. */ | |
985 | NOTE_INSN_FUNCTION_END, | |
986 | ||
d636c18c RH |
987 | /* This marks the point immediately after the last prologue insn. */ |
988 | NOTE_INSN_PROLOGUE_END, | |
989 | ||
990 | /* This marks the point immediately prior to the first epilogue insn. */ | |
991 | NOTE_INSN_EPILOGUE_BEG, | |
992 | ||
993 | /* Generated in place of user-declared labels when they are deleted. */ | |
994 | NOTE_INSN_DELETED_LABEL, | |
995 | ||
996 | /* This note indicates the start of the real body of the function, | |
997 | i.e. the point just after all of the parms have been moved into | |
998 | their homes, etc. */ | |
999 | NOTE_INSN_FUNCTION_BEG, | |
1000 | ||
3d7aafde | 1001 | /* These note where exception handling regions begin and end. |
d636c18c RH |
1002 | Uses NOTE_EH_HANDLER to identify the region in question. */ |
1003 | NOTE_INSN_EH_REGION_BEG, | |
1004 | NOTE_INSN_EH_REGION_END, | |
1005 | ||
1006 | /* Generated whenever a duplicate line number note is output. For example, | |
1007 | one is output after the end of an inline function, in order to prevent | |
eebedaa5 | 1008 | the line containing the inline call from being counted twice in gcov. */ |
b3b42a4d | 1009 | NOTE_INSN_REPEATED_LINE_NUMBER, |
d636c18c | 1010 | |
eebedaa5 | 1011 | /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */ |
d636c18c RH |
1012 | NOTE_INSN_BASIC_BLOCK, |
1013 | ||
994a57cd RH |
1014 | /* Record the expected value of a register at a location. Uses |
1015 | NOTE_EXPECTED_VALUE; stored as (eq (reg) (const_int)). */ | |
1016 | NOTE_INSN_EXPECTED_VALUE, | |
1017 | ||
4b7e68e7 | 1018 | /* Record a prediction. Uses NOTE_PREDICTION. */ |
969d70ca JH |
1019 | NOTE_INSN_PREDICTION, |
1020 | ||
750054a2 CT |
1021 | /* Record that the current basic block is unlikely to be executed and |
1022 | should be moved to the UNLIKELY_EXECUTED_TEXT_SECTION. */ | |
1023 | NOTE_INSN_UNLIKELY_EXECUTED_CODE, | |
1024 | ||
014a1138 JZ |
1025 | /* The location of a variable. */ |
1026 | NOTE_INSN_VAR_LOCATION, | |
1027 | ||
d636c18c RH |
1028 | NOTE_INSN_MAX |
1029 | }; | |
10f07067 | 1030 | |
6f29feb1 JW |
1031 | /* Names for NOTE insn's other than line numbers. */ |
1032 | ||
d636c18c RH |
1033 | extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; |
1034 | #define GET_NOTE_INSN_NAME(NOTE_CODE) \ | |
dbbbbf3b | 1035 | (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS]) |
6f29feb1 JW |
1036 | |
1037 | /* The name of a label, in case it corresponds to an explicit label | |
1038 | in the input source code. */ | |
ba4f7968 | 1039 | #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) |
6f29feb1 JW |
1040 | |
1041 | /* In jump.c, each label contains a count of the number | |
1042 | of LABEL_REFs that point at it, so unused labels can be deleted. */ | |
ba4f7968 | 1043 | #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) |
6f29feb1 | 1044 | |
0dc36574 ZW |
1045 | /* Labels carry a two-bit field composed of the ->jump and ->call |
1046 | bits. This field indicates whether the label is an alternate | |
1047 | entry point, and if so, what kind. */ | |
1048 | enum label_kind | |
1049 | { | |
1050 | LABEL_NORMAL = 0, /* ordinary label */ | |
1051 | LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ | |
1052 | LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ | |
1053 | LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ | |
1054 | }; | |
1055 | ||
1056 | #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) | |
1057 | ||
1058 | /* Retrieve the kind of LABEL. */ | |
1059 | #define LABEL_KIND(LABEL) __extension__ \ | |
1060 | ({ rtx const _label = (LABEL); \ | |
1061 | if (GET_CODE (_label) != CODE_LABEL) \ | |
1062 | rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ | |
1063 | __FUNCTION__); \ | |
1064 | (enum label_kind) ((_label->jump << 1) | _label->call); }) | |
1065 | ||
1066 | /* Set the kind of LABEL. */ | |
1067 | #define SET_LABEL_KIND(LABEL, KIND) do { \ | |
1068 | rtx _label = (LABEL); \ | |
1069 | unsigned int _kind = (KIND); \ | |
1070 | if (GET_CODE (_label) != CODE_LABEL) \ | |
1071 | rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ | |
1072 | __FUNCTION__); \ | |
1073 | _label->jump = ((_kind >> 1) & 1); \ | |
1074 | _label->call = (_kind & 1); \ | |
1075 | } while (0) | |
1076 | ||
1077 | #else | |
1078 | ||
1079 | /* Retrieve the kind of LABEL. */ | |
1080 | #define LABEL_KIND(LABEL) \ | |
1081 | ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) | |
1082 | ||
1083 | /* Set the kind of LABEL. */ | |
1084 | #define SET_LABEL_KIND(LABEL, KIND) do { \ | |
1085 | rtx _label = (LABEL); \ | |
1086 | unsigned int _kind = (KIND); \ | |
1087 | _label->jump = ((_kind >> 1) & 1); \ | |
1088 | _label->call = (_kind & 1); \ | |
1089 | } while (0) | |
1090 | ||
1091 | #endif /* rtl flag checking */ | |
1092 | ||
1093 | #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) | |
8cd0faaf | 1094 | |
e9a25f70 | 1095 | /* The original regno this ADDRESSOF was built for. */ |
f52eda29 | 1096 | #define ADDRESSOF_REGNO(RTX) XCUINT (RTX, 1, ADDRESSOF) |
e9a25f70 JL |
1097 | |
1098 | /* The variable in the register we took the address of. */ | |
f52eda29 | 1099 | #define ADDRESSOF_DECL(RTX) XCTREE (RTX, 2, ADDRESSOF) |
e9a25f70 | 1100 | |
6f29feb1 JW |
1101 | /* In jump.c, each JUMP_INSN can point to a label that it can jump to, |
1102 | so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can | |
1103 | be decremented and possibly the label can be deleted. */ | |
ba4f7968 | 1104 | #define JUMP_LABEL(INSN) XCEXP (INSN, 9, JUMP_INSN) |
6f29feb1 JW |
1105 | |
1106 | /* Once basic blocks are found in flow.c, | |
1107 | each CODE_LABEL starts a chain that goes through | |
1108 | all the LABEL_REFs that jump to that label. | |
be1bb652 | 1109 | The chain eventually winds up at the CODE_LABEL: it is circular. */ |
ba4f7968 | 1110 | #define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL) |
6f29feb1 JW |
1111 | \f |
1112 | /* This is the field in the LABEL_REF through which the circular chain | |
1113 | of references to a particular label is linked. | |
1114 | This chain is set up in flow.c. */ | |
1115 | ||
f52eda29 | 1116 | #define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF) |
6f29feb1 JW |
1117 | |
1118 | /* Once basic blocks are found in flow.c, | |
1119 | Each LABEL_REF points to its containing instruction with this field. */ | |
1120 | ||
f52eda29 | 1121 | #define CONTAINING_INSN(RTX) XCEXP (RTX, 2, LABEL_REF) |
6f29feb1 | 1122 | |
08394eef BS |
1123 | /* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds |
1124 | the number the register originally had; for a pseudo register turned into | |
1125 | a hard reg this will hold the old pseudo register number. */ | |
6f29feb1 | 1126 | |
f52eda29 GS |
1127 | #define REGNO(RTX) XCUINT (RTX, 0, REG) |
1128 | #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) | |
6f29feb1 | 1129 | |
084a1106 JDA |
1130 | /* 1 if RTX is a reg or parallel that is the current function's return |
1131 | value. */ | |
2d4cc6a7 | 1132 | #define REG_FUNCTION_VALUE_P(RTX) \ |
6de9cd9a | 1133 | (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) |
6f29feb1 | 1134 | |
2d4cc6a7 JJ |
1135 | /* 1 if RTX is a reg that corresponds to a variable declared by the user. */ |
1136 | #define REG_USERVAR_P(RTX) \ | |
1137 | (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) | |
6f29feb1 | 1138 | |
2d4cc6a7 JJ |
1139 | /* 1 if RTX is a reg that holds a pointer value. */ |
1140 | #define REG_POINTER(RTX) \ | |
1141 | (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) | |
3502dc9c | 1142 | |
f8ad8d7c ZD |
1143 | /* 1 if RTX is a mem that holds a pointer value. */ |
1144 | #define MEM_POINTER(RTX) \ | |
1145 | (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) | |
1146 | ||
cdbca172 JO |
1147 | /* 1 if the given register REG corresponds to a hard register. */ |
1148 | #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) | |
1149 | ||
1150 | /* 1 if the given register number REG_NO corresponds to a hard register. */ | |
f52eda29 | 1151 | #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) |
cdbca172 | 1152 | |
6f29feb1 JW |
1153 | /* For a CONST_INT rtx, INTVAL extracts the integer. */ |
1154 | ||
83ab3839 | 1155 | #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) |
6f29feb1 | 1156 | |
a36556a8 | 1157 | /* For a CONST_DOUBLE: |
46b33600 RH |
1158 | For a DImode, there are two integers CONST_DOUBLE_LOW is the |
1159 | low-order word and ..._HIGH the high-order. | |
3d7aafde | 1160 | For a float, there is a REAL_VALUE_TYPE structure, and |
46b33600 | 1161 | CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ |
5692c7bc ZW |
1162 | #define CONST_DOUBLE_LOW(r) XCWINT (r, 0, CONST_DOUBLE) |
1163 | #define CONST_DOUBLE_HIGH(r) XCWINT (r, 1, CONST_DOUBLE) | |
46b33600 | 1164 | #define CONST_DOUBLE_REAL_VALUE(r) ((struct real_value *)&CONST_DOUBLE_LOW(r)) |
a36556a8 | 1165 | |
69ef87e2 AH |
1166 | /* For a CONST_VECTOR, return element #n. */ |
1167 | #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) | |
1168 | ||
1169 | /* For a CONST_VECTOR, return the number of elements in a vector. */ | |
1170 | #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) | |
1171 | ||
6f29feb1 | 1172 | /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. |
ddef6bc7 | 1173 | SUBREG_BYTE extracts the byte-number. */ |
6f29feb1 | 1174 | |
f52eda29 GS |
1175 | #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) |
1176 | #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) | |
ddef6bc7 JJ |
1177 | |
1178 | /* in rtlanal.c */ | |
f894b69b PB |
1179 | /* Return the right cost to give to an operation |
1180 | to make the cost of the corresponding register-to-register instruction | |
1181 | N times that of a fast register-to-register instruction. */ | |
1182 | #define COSTS_N_INSNS(N) ((N) * 4) | |
1183 | ||
1184 | /* Maximum cost of an rtl expression. This value has the special meaning | |
1185 | not to use an rtx with this cost under any circumstances. */ | |
1186 | #define MAX_COST INT_MAX | |
1187 | ||
1188 | extern int rtx_cost (rtx, enum rtx_code); | |
1189 | extern int address_cost (rtx, enum machine_mode); | |
0c20a65f | 1190 | extern unsigned int subreg_lsb (rtx); |
bb51e270 RS |
1191 | extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, |
1192 | unsigned int); | |
0c20a65f AJ |
1193 | extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, |
1194 | unsigned int, enum machine_mode); | |
1195 | extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, | |
1196 | unsigned int, enum machine_mode); | |
1197 | extern unsigned int subreg_regno (rtx); | |
6f29feb1 | 1198 | |
2d4cc6a7 JJ |
1199 | /* 1 if RTX is a subreg containing a reg that is already known to be |
1200 | sign- or zero-extended from the mode of the subreg to the mode of | |
07be3989 | 1201 | the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the |
f590cca1 | 1202 | extension. |
07be3989 RK |
1203 | |
1204 | When used as a LHS, is means that this extension must be done | |
1205 | when assigning to SUBREG_REG. */ | |
1206 | ||
2d4cc6a7 JJ |
1207 | #define SUBREG_PROMOTED_VAR_P(RTX) \ |
1208 | (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) | |
1209 | ||
1210 | #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ | |
1211 | do { \ | |
b0ad77d5 | 1212 | rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ |
2d4cc6a7 | 1213 | if ((VAL) < 0) \ |
b0ad77d5 | 1214 | _rtx->volatil = 1; \ |
2d4cc6a7 | 1215 | else { \ |
b0ad77d5 KG |
1216 | _rtx->volatil = 0; \ |
1217 | _rtx->unchanging = (VAL); \ | |
2d4cc6a7 | 1218 | } \ |
7879b81e | 1219 | } while (0) |
5a63e069 | 1220 | #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ |
2d4cc6a7 JJ |
1221 | ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ |
1222 | ? -1 : (RTX)->unchanging) | |
07be3989 | 1223 | |
6f29feb1 JW |
1224 | /* Access various components of an ASM_OPERANDS rtx. */ |
1225 | ||
f52eda29 GS |
1226 | #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) |
1227 | #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) | |
1228 | #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) | |
1229 | #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) | |
1230 | #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) | |
1231 | #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) | |
1232 | #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) | |
6462bb43 | 1233 | #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ |
f52eda29 | 1234 | XCVECEXP (RTX, 4, N, ASM_OPERANDS) |
3bdf5ad1 | 1235 | #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ |
f52eda29 | 1236 | XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) |
3bdf5ad1 | 1237 | #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ |
f52eda29 GS |
1238 | GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) |
1239 | #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS) | |
1240 | #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS) | |
6f29feb1 | 1241 | |
2d4cc6a7 | 1242 | /* 1 if RTX is a mem and we should keep the alias set for this mem |
10b76d73 RK |
1243 | unchanged when we access a component. Set to 1, or example, when we |
1244 | are already in a non-addressable component of an aggregate. */ | |
2d4cc6a7 JJ |
1245 | #define MEM_KEEP_ALIAS_SET_P(RTX) \ |
1246 | (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) | |
10b76d73 | 1247 | |
2d4cc6a7 JJ |
1248 | /* 1 if RTX is a mem or asm_operand for a volatile reference. */ |
1249 | #define MEM_VOLATILE_P(RTX) \ | |
1250 | (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ | |
1251 | ASM_INPUT)->volatil) | |
6f29feb1 | 1252 | |
2d4cc6a7 | 1253 | /* 1 if RTX is a mem that refers to an aggregate, either to the |
3bdf5ad1 | 1254 | aggregate itself of to a field of the aggregate. If zero, RTX may |
4eb00163 | 1255 | or may not be such a reference. */ |
2d4cc6a7 JJ |
1256 | #define MEM_IN_STRUCT_P(RTX) \ |
1257 | (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct) | |
6f29feb1 | 1258 | |
2d4cc6a7 | 1259 | /* 1 if RTX is a mem that refers to a scalar. If zero, RTX may or may |
3ef42a0c | 1260 | not refer to a scalar. */ |
2d4cc6a7 | 1261 | #define MEM_SCALAR_P(RTX) \ |
f8ad8d7c | 1262 | (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->integrated) |
c6df88cb | 1263 | |
4da2eb6b RH |
1264 | /* 1 if RTX is a mem that cannot trap. */ |
1265 | #define MEM_NOTRAP_P(RTX) \ | |
1266 | (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) | |
1267 | ||
40f03658 | 1268 | /* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in |
c6df88cb MM |
1269 | RTX. Otherwise, vice versa. Use this macro only when you are |
1270 | *sure* that you know that the MEM is in a structure, or is a | |
1271 | scalar. VAL is evaluated only once. */ | |
f52eda29 GS |
1272 | #define MEM_SET_IN_STRUCT_P(RTX, VAL) \ |
1273 | do { \ | |
f9e158c3 JM |
1274 | if (VAL) \ |
1275 | { \ | |
1276 | MEM_IN_STRUCT_P (RTX) = 1; \ | |
1277 | MEM_SCALAR_P (RTX) = 0; \ | |
1278 | } \ | |
1279 | else \ | |
1280 | { \ | |
1281 | MEM_IN_STRUCT_P (RTX) = 0; \ | |
1282 | MEM_SCALAR_P (RTX) = 1; \ | |
1283 | } \ | |
1284 | } while (0) | |
c6df88cb | 1285 | |
173b24b9 RK |
1286 | /* The memory attribute block. We provide access macros for each value |
1287 | in the block and provide defaults if none specified. */ | |
1288 | #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) | |
1289 | ||
a560d4d4 JH |
1290 | /* The register attribute block. We provide access macros for each value |
1291 | in the block and provide defaults if none specified. */ | |
1292 | #define REG_ATTRS(RTX) X0REGATTR (RTX, 2) | |
1293 | ||
41472af8 MM |
1294 | /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias |
1295 | set, and may alias anything. Otherwise, the MEM can only alias | |
3568b0ef | 1296 | MEMs in a conflicting alias set. This value is set in a |
41472af8 | 1297 | language-dependent manner in the front-end, and should not be |
3568b0ef RH |
1298 | altered in the back-end. These set numbers are tested with |
1299 | alias_sets_conflict_p. */ | |
173b24b9 RK |
1300 | #define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias) |
1301 | ||
1302 | /* For a MEM rtx, the decl it is known to refer to, if it is known to | |
998d7deb RH |
1303 | refer to part of a DECL. It may also be a COMPONENT_REF. */ |
1304 | #define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr) | |
173b24b9 | 1305 | |
998d7deb | 1306 | /* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a |
173b24b9 RK |
1307 | RTX that is always a CONST_INT. */ |
1308 | #define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset) | |
1309 | ||
1310 | /* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that | |
1311 | is always a CONST_INT. */ | |
10b76d73 RK |
1312 | #define MEM_SIZE(RTX) \ |
1313 | (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ | |
1314 | : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ | |
1315 | : 0) | |
173b24b9 | 1316 | |
917afb0c RK |
1317 | /* For a MEM rtx, the alignment in bits. We can use the alignment of the |
1318 | mode as a default when STRICT_ALIGNMENT, but not if not. */ | |
8ac61af7 RK |
1319 | #define MEM_ALIGN(RTX) \ |
1320 | (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \ | |
917afb0c RK |
1321 | : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \ |
1322 | ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT)) | |
3bdf5ad1 | 1323 | |
a560d4d4 JH |
1324 | /* For a REG rtx, the decl it is known to refer to, if it is known to |
1325 | refer to part of a DECL. */ | |
1326 | #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) | |
1327 | ||
1328 | /* For a MEM rtx, the offset from the start of MEM_DECL, if known, as a | |
1329 | RTX that is always a CONST_INT. */ | |
1330 | #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) | |
1331 | ||
3bdf5ad1 | 1332 | /* Copy the attributes that apply to memory locations from RHS to LHS. */ |
10b76d73 RK |
1333 | #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ |
1334 | (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ | |
1335 | MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ | |
1336 | MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ | |
4da2eb6b | 1337 | MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ |
10b76d73 RK |
1338 | RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \ |
1339 | MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ | |
173b24b9 | 1340 | MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) |
41472af8 | 1341 | |
2d4cc6a7 JJ |
1342 | /* 1 if RTX is a label_ref to a label outside the loop containing the |
1343 | reference. */ | |
1344 | #define LABEL_OUTSIDE_LOOP_P(RTX) \ | |
1345 | (RTL_FLAG_CHECK1("LABEL_OUTSIDE_LOOP_P", (RTX), LABEL_REF)->in_struct) | |
6f29feb1 | 1346 | |
2d4cc6a7 JJ |
1347 | /* 1 if RTX is a label_ref for a nonlocal label. */ |
1348 | /* Likewise in an expr_list for a reg_label note. */ | |
1349 | #define LABEL_REF_NONLOCAL_P(RTX) \ | |
1350 | (RTL_FLAG_CHECK2("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF, \ | |
1351 | REG_LABEL)->volatil) | |
adfaf10a | 1352 | |
2d4cc6a7 JJ |
1353 | /* 1 if RTX is a code_label that should always be considered to be needed. */ |
1354 | #define LABEL_PRESERVE_P(RTX) \ | |
1355 | (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) | |
6f29feb1 | 1356 | |
2d4cc6a7 JJ |
1357 | /* 1 if RTX is a reg that is used only in an exit test of a loop. */ |
1358 | #define REG_LOOP_TEST_P(RTX) \ | |
1359 | (RTL_FLAG_CHECK1("REG_LOOP_TEST_P", (RTX), REG)->in_struct) | |
6f29feb1 | 1360 | |
2d4cc6a7 | 1361 | /* During sched, 1 if RTX is an insn that must be scheduled together |
d45cf215 | 1362 | with the preceding insn. */ |
2d4cc6a7 | 1363 | #define SCHED_GROUP_P(RTX) \ |
be202ec2 FS |
1364 | (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \ |
1365 | )->in_struct) | |
6f29feb1 JW |
1366 | |
1367 | /* For a SET rtx, SET_DEST is the place that is set | |
1368 | and SET_SRC is the value it is set to. */ | |
83ab3839 RH |
1369 | #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) |
1370 | #define SET_SRC(RTX) XCEXP(RTX, 1, SET) | |
2d4cc6a7 JJ |
1371 | #define SET_IS_RETURN_P(RTX) \ |
1372 | (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) | |
6f29feb1 JW |
1373 | |
1374 | /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ | |
f52eda29 GS |
1375 | #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) |
1376 | #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) | |
6f29feb1 | 1377 | |
0c99ec5c RH |
1378 | /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base |
1379 | conditionally executing the code on, COND_EXEC_CODE is the code | |
1380 | to execute if the condition is true. */ | |
f52eda29 GS |
1381 | #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) |
1382 | #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) | |
0c99ec5c | 1383 | |
2adb9af1 RH |
1384 | /* 1 if RTX is a symbol_ref that addresses this function's rtl |
1385 | constants pool. */ | |
2d4cc6a7 JJ |
1386 | #define CONSTANT_POOL_ADDRESS_P(RTX) \ |
1387 | (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) | |
6f29feb1 | 1388 | |
2adb9af1 RH |
1389 | /* 1 if RTX is a symbol_ref that addresses a value in the file's |
1390 | tree constant pool. This information is private to varasm.c. */ | |
1391 | #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ | |
1392 | (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ | |
1393 | (RTX), SYMBOL_REF)->frame_related) | |
bd7cf17e | 1394 | |
2d4cc6a7 JJ |
1395 | /* Used if RTX is a symbol_ref, for machine-specific purposes. */ |
1396 | #define SYMBOL_REF_FLAG(RTX) \ | |
1397 | (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) | |
6f29feb1 | 1398 | |
2d4cc6a7 JJ |
1399 | /* 1 if RTX is a symbol_ref that has been the library function in |
1400 | emit_library_call. */ | |
1401 | #define SYMBOL_REF_USED(RTX) \ | |
1402 | (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) | |
6f29feb1 | 1403 | |
2d4cc6a7 JJ |
1404 | /* 1 if RTX is a symbol_ref for a weak symbol. */ |
1405 | #define SYMBOL_REF_WEAK(RTX) \ | |
6de9cd9a | 1406 | (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) |
ff0b6b99 | 1407 | |
32a61907 | 1408 | /* The tree (decl or constant) associated with the symbol, or null. */ |
52859c77 RH |
1409 | #define SYMBOL_REF_DECL(RTX) X0TREE ((RTX), 2) |
1410 | ||
1411 | /* A set of flags on a symbol_ref that are, in some respects, redundant with | |
1412 | information derivable from the tree decl associated with this symbol. | |
1413 | Except that we build a *lot* of SYMBOL_REFs that aren't associated with a | |
1414 | decl. In some cases this is a bug. But beyond that, it's nice to cache | |
1415 | this information to avoid recomputing it. Finally, this allows space for | |
1416 | the target to store more than one bit of information, as with | |
1417 | SYMBOL_REF_FLAG. */ | |
1418 | #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) | |
1419 | ||
1420 | /* These flags are common enough to be defined for all targets. They | |
1421 | are computed by the default version of targetm.encode_section_info. */ | |
1422 | ||
1423 | /* Set if this symbol is a function. */ | |
1424 | #define SYMBOL_FLAG_FUNCTION (1 << 0) | |
1425 | #define SYMBOL_REF_FUNCTION_P(RTX) \ | |
1426 | ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) | |
1427 | /* Set if targetm.binds_local_p is true. */ | |
1428 | #define SYMBOL_FLAG_LOCAL (1 << 1) | |
1429 | #define SYMBOL_REF_LOCAL_P(RTX) \ | |
1430 | ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) | |
1431 | /* Set if targetm.in_small_data_p is true. */ | |
1432 | #define SYMBOL_FLAG_SMALL (1 << 2) | |
1433 | #define SYMBOL_REF_SMALL_P(RTX) \ | |
1434 | ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) | |
1435 | /* The three-bit field at [5:3] is true for TLS variables; use | |
1436 | SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ | |
1437 | #define SYMBOL_FLAG_TLS_SHIFT 3 | |
1438 | #define SYMBOL_REF_TLS_MODEL(RTX) \ | |
629f6514 | 1439 | ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) |
52859c77 RH |
1440 | /* Set if this symbol is not defined in this translation unit. */ |
1441 | #define SYMBOL_FLAG_EXTERNAL (1 << 6) | |
1442 | #define SYMBOL_REF_EXTERNAL_P(RTX) \ | |
1443 | ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) | |
1444 | ||
1445 | /* Subsequent bits are available for the target to use. */ | |
89e6b702 RH |
1446 | #define SYMBOL_FLAG_MACH_DEP_SHIFT 7 |
1447 | #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) | |
52859c77 | 1448 | |
6f29feb1 JW |
1449 | /* Define a macro to look for REG_INC notes, |
1450 | but save time on machines where they never exist. */ | |
1451 | ||
58e54c44 | 1452 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) |
f52eda29 GS |
1453 | #define FIND_REG_INC_NOTE(INSN, REG) \ |
1454 | ((REG) != NULL_RTX && REG_P ((REG)) \ | |
1455 | ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ | |
1456 | : find_reg_note ((INSN), REG_INC, (REG))) | |
6f29feb1 | 1457 | #else |
f52eda29 | 1458 | #define FIND_REG_INC_NOTE(INSN, REG) 0 |
6f29feb1 JW |
1459 | #endif |
1460 | ||
1461 | /* Indicate whether the machine has any sort of auto increment addressing. | |
1462 | If not, we can avoid checking for REG_INC notes. */ | |
1463 | ||
58e54c44 | 1464 | #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) |
6f29feb1 JW |
1465 | #define AUTO_INC_DEC |
1466 | #endif | |
0dfa1860 | 1467 | |
940da324 JL |
1468 | #ifndef HAVE_PRE_INCREMENT |
1469 | #define HAVE_PRE_INCREMENT 0 | |
1470 | #endif | |
1471 | ||
1472 | #ifndef HAVE_PRE_DECREMENT | |
1473 | #define HAVE_PRE_DECREMENT 0 | |
1474 | #endif | |
1475 | ||
1476 | #ifndef HAVE_POST_INCREMENT | |
1477 | #define HAVE_POST_INCREMENT 0 | |
1478 | #endif | |
1479 | ||
1480 | #ifndef HAVE_POST_DECREMENT | |
1481 | #define HAVE_POST_DECREMENT 0 | |
1482 | #endif | |
1483 | ||
4b983fdc RH |
1484 | #ifndef HAVE_POST_MODIFY_DISP |
1485 | #define HAVE_POST_MODIFY_DISP 0 | |
1486 | #endif | |
1487 | ||
1488 | #ifndef HAVE_POST_MODIFY_REG | |
1489 | #define HAVE_POST_MODIFY_REG 0 | |
1490 | #endif | |
1491 | ||
1492 | #ifndef HAVE_PRE_MODIFY_DISP | |
1493 | #define HAVE_PRE_MODIFY_DISP 0 | |
1494 | #endif | |
1495 | ||
1496 | #ifndef HAVE_PRE_MODIFY_REG | |
1497 | #define HAVE_PRE_MODIFY_REG 0 | |
1498 | #endif | |
1499 | ||
6e01bd94 MH |
1500 | |
1501 | /* Some architectures do not have complete pre/post increment/decrement | |
1502 | instruction sets, or only move some modes efficiently. These macros | |
1503 | allow us to tune autoincrement generation. */ | |
1504 | ||
1505 | #ifndef USE_LOAD_POST_INCREMENT | |
1506 | #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1507 | #endif | |
1508 | ||
1509 | #ifndef USE_LOAD_POST_DECREMENT | |
1510 | #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1511 | #endif | |
1512 | ||
1513 | #ifndef USE_LOAD_PRE_INCREMENT | |
1514 | #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1515 | #endif | |
1516 | ||
1517 | #ifndef USE_LOAD_PRE_DECREMENT | |
1518 | #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1519 | #endif | |
1520 | ||
1521 | #ifndef USE_STORE_POST_INCREMENT | |
1522 | #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT | |
1523 | #endif | |
1524 | ||
1525 | #ifndef USE_STORE_POST_DECREMENT | |
1526 | #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT | |
1527 | #endif | |
1528 | ||
1529 | #ifndef USE_STORE_PRE_INCREMENT | |
1530 | #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT | |
1531 | #endif | |
1532 | ||
1533 | #ifndef USE_STORE_PRE_DECREMENT | |
1534 | #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT | |
1535 | #endif | |
6f29feb1 | 1536 | \f |
bf6bb899 BS |
1537 | /* Nonzero if we need to distinguish between the return value of this function |
1538 | and the return value of a function called by this function. This helps | |
1539 | integrate.c. | |
6de9cd9a DN |
1540 | This is 1 until after the rtl generation pass. |
1541 | ??? It appears that this is 1 only when expanding trees to RTL. */ | |
bf6bb899 BS |
1542 | extern int rtx_equal_function_value_matters; |
1543 | ||
1b3d8f8a GK |
1544 | /* Nonzero when we are generating CONCATs. */ |
1545 | extern int generating_concat_p; | |
1546 | ||
6f29feb1 JW |
1547 | /* Generally useful functions. */ |
1548 | ||
ac957f13 | 1549 | /* In expmed.c */ |
0c20a65f | 1550 | extern int ceil_log2 (unsigned HOST_WIDE_INT); |
5f4f0e22 | 1551 | |
f52eda29 | 1552 | #define plus_constant(X, C) plus_constant_wide ((X), (HOST_WIDE_INT) (C)) |
5f4f0e22 | 1553 | |
5f2d6cfa | 1554 | /* In builtins.c */ |
4682ae04 AJ |
1555 | extern rtx expand_builtin_expect_jump (tree, rtx, rtx); |
1556 | extern void purge_builtin_constant_p (void); | |
5f2d6cfa | 1557 | |
50b2596f | 1558 | /* In explow.c */ |
0c20a65f AJ |
1559 | extern void set_stack_check_libfunc (rtx); |
1560 | extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); | |
1561 | extern rtx plus_constant_wide (rtx, HOST_WIDE_INT); | |
1562 | extern rtx plus_constant_for_output_wide (rtx, HOST_WIDE_INT); | |
1563 | extern void optimize_save_area_alloca (rtx); | |
5f4f0e22 | 1564 | |
4eb00163 | 1565 | /* In emit-rtl.c */ |
0c20a65f AJ |
1566 | extern rtvec gen_rtvec (int, ...); |
1567 | extern rtx copy_insn_1 (rtx); | |
1568 | extern rtx copy_insn (rtx); | |
1569 | extern rtx gen_int_mode (HOST_WIDE_INT, enum machine_mode); | |
1570 | extern rtx emit_copy_of_insn_after (rtx, rtx); | |
1571 | extern void set_reg_attrs_from_mem (rtx, rtx); | |
1572 | extern void set_mem_attrs_from_reg (rtx, rtx); | |
1573 | extern void set_reg_attrs_for_parm (rtx, rtx); | |
b9dcdee4 | 1574 | extern void set_reg_pointer_align (rtx, unsigned int); |
2b3493c8 | 1575 | extern int mem_expr_equal_p (tree, tree); |
4eb00163 JO |
1576 | |
1577 | /* In rtl.c */ | |
b9dcdee4 JH |
1578 | extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); |
1579 | #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) | |
1580 | ||
0c20a65f AJ |
1581 | extern rtvec rtvec_alloc (int); |
1582 | extern rtx copy_rtx (rtx); | |
439a7e54 | 1583 | extern void dump_rtx_statistics (void); |
4eb00163 JO |
1584 | |
1585 | /* In emit-rtl.c */ | |
0c20a65f | 1586 | extern rtx copy_rtx_if_shared (rtx); |
4eb00163 JO |
1587 | |
1588 | /* In rtl.c */ | |
0c20a65f | 1589 | extern rtx copy_most_rtx (rtx, rtx); |
b9dcdee4 JH |
1590 | extern rtx shallow_copy_rtx_stat (rtx MEM_STAT_DECL); |
1591 | #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) | |
0c20a65f | 1592 | extern int rtx_equal_p (rtx, rtx); |
4eb00163 JO |
1593 | |
1594 | /* In emit-rtl.c */ | |
0c20a65f AJ |
1595 | extern rtvec gen_rtvec_v (int, rtx *); |
1596 | extern rtx gen_reg_rtx (enum machine_mode); | |
1597 | extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); | |
1598 | extern rtx gen_label_rtx (void); | |
1599 | extern int subreg_hard_regno (rtx, int); | |
1600 | extern rtx gen_lowpart_common (enum machine_mode, rtx); | |
4de249d9 PB |
1601 | extern rtx gen_lowpart_general (enum machine_mode, rtx); |
1602 | extern rtx (*gen_lowpart) (enum machine_mode mode, rtx x); | |
1603 | ||
4eb00163 JO |
1604 | |
1605 | /* In cse.c */ | |
0c20a65f | 1606 | extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); |
4eb00163 JO |
1607 | |
1608 | /* In emit-rtl.c */ | |
0c20a65f AJ |
1609 | extern rtx gen_highpart (enum machine_mode, rtx); |
1610 | extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); | |
1611 | extern rtx gen_realpart (enum machine_mode, rtx); | |
1612 | extern rtx gen_imagpart (enum machine_mode, rtx); | |
1613 | extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); | |
4eb00163 JO |
1614 | |
1615 | /* In emit-rtl.c */ | |
0c20a65f AJ |
1616 | extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); |
1617 | extern int subreg_lowpart_p (rtx); | |
1618 | extern unsigned int subreg_lowpart_offset (enum machine_mode, | |
1619 | enum machine_mode); | |
1620 | extern unsigned int subreg_highpart_offset (enum machine_mode, | |
1621 | enum machine_mode); | |
1622 | extern rtx make_safe_from (rtx, rtx); | |
1623 | extern rtx convert_memory_address (enum machine_mode, rtx); | |
1624 | extern rtx get_insns (void); | |
1625 | extern const char *get_insn_name (int); | |
1626 | extern rtx get_last_insn (void); | |
1627 | extern rtx get_last_insn_anywhere (void); | |
1628 | extern rtx get_first_nonnote_insn (void); | |
1629 | extern rtx get_last_nonnote_insn (void); | |
1630 | extern void start_sequence (void); | |
1631 | extern void push_to_sequence (rtx); | |
1632 | extern void end_sequence (void); | |
1633 | extern void push_to_full_sequence (rtx, rtx); | |
0c20a65f AJ |
1634 | extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, |
1635 | enum machine_mode); | |
550d1387 GK |
1636 | |
1637 | /* In varasm.c */ | |
0c20a65f | 1638 | extern rtx force_const_mem (enum machine_mode, rtx); |
4eb00163 | 1639 | |
4eb00163 | 1640 | /* In varasm.c */ |
0c20a65f AJ |
1641 | extern rtx get_pool_constant (rtx); |
1642 | extern rtx get_pool_constant_mark (rtx, bool *); | |
1643 | extern enum machine_mode get_pool_mode (rtx); | |
1644 | extern rtx get_pool_constant_for_function (struct function *, rtx); | |
1645 | extern enum machine_mode get_pool_mode_for_function (struct function *, rtx); | |
1646 | extern int get_pool_offset (rtx); | |
1647 | extern rtx simplify_subtraction (rtx); | |
4eb00163 JO |
1648 | |
1649 | /* In function.c */ | |
0c20a65f AJ |
1650 | extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); |
1651 | extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int); | |
1652 | extern rtx assign_stack_temp_for_type (enum machine_mode, | |
1653 | HOST_WIDE_INT, int, tree); | |
1654 | extern rtx assign_temp (tree, int, int, int); | |
fd3acbb3 | 1655 | |
4eb00163 | 1656 | /* In emit-rtl.c */ |
0c20a65f AJ |
1657 | extern rtx emit_insn_before (rtx, rtx); |
1658 | extern rtx emit_insn_before_setloc (rtx, rtx, int); | |
1659 | extern rtx emit_jump_insn_before (rtx, rtx); | |
1660 | extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); | |
1661 | extern rtx emit_call_insn_before (rtx, rtx); | |
1662 | extern rtx emit_call_insn_before_setloc (rtx, rtx, int); | |
1663 | extern rtx emit_barrier_before (rtx); | |
1664 | extern rtx emit_label_before (rtx, rtx); | |
1665 | extern rtx emit_note_before (int, rtx); | |
1666 | extern rtx emit_insn_after (rtx, rtx); | |
1667 | extern rtx emit_insn_after_setloc (rtx, rtx, int); | |
1668 | extern rtx emit_jump_insn_after (rtx, rtx); | |
1669 | extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); | |
1670 | extern rtx emit_call_insn_after (rtx, rtx); | |
1671 | extern rtx emit_call_insn_after_setloc (rtx, rtx, int); | |
1672 | extern rtx emit_barrier_after (rtx); | |
1673 | extern rtx emit_label_after (rtx, rtx); | |
1674 | extern rtx emit_note_after (int, rtx); | |
1675 | extern rtx emit_note_copy_after (rtx, rtx); | |
1676 | extern rtx emit_insn (rtx); | |
1677 | extern rtx emit_jump_insn (rtx); | |
1678 | extern rtx emit_call_insn (rtx); | |
1679 | extern rtx emit_label (rtx); | |
1680 | extern rtx emit_barrier (void); | |
1681 | extern rtx emit_note (int); | |
1682 | extern rtx emit_note_copy (rtx); | |
0cea056b | 1683 | extern rtx emit_line_note (location_t); |
0c20a65f AJ |
1684 | extern rtx make_insn_raw (rtx); |
1685 | extern void add_function_usage_to (rtx, rtx); | |
1686 | extern rtx last_call_insn (void); | |
1687 | extern rtx previous_insn (rtx); | |
1688 | extern rtx next_insn (rtx); | |
1689 | extern rtx prev_nonnote_insn (rtx); | |
1690 | extern rtx next_nonnote_insn (rtx); | |
1691 | extern rtx prev_real_insn (rtx); | |
1692 | extern rtx next_real_insn (rtx); | |
1693 | extern rtx prev_active_insn (rtx); | |
1694 | extern rtx next_active_insn (rtx); | |
1695 | extern int active_insn_p (rtx); | |
1696 | extern rtx prev_label (rtx); | |
1697 | extern rtx next_label (rtx); | |
1698 | extern rtx next_cc0_user (rtx); | |
1699 | extern rtx prev_cc0_setter (rtx); | |
4eb00163 | 1700 | |
dd3adcf8 DJ |
1701 | #define emit_insn_before_sameloc(INSN, BEFORE) \ |
1702 | emit_insn_before_setloc (INSN, BEFORE, INSN_LOCATOR (BEFORE)) | |
1703 | #define emit_jump_insn_before_sameloc(INSN, BEFORE) \ | |
1704 | emit_jump_insn_before_setloc (INSN, BEFORE, INSN_LOCATOR (BEFORE)) | |
1705 | #define emit_call_insn_before_sameloc(INSN, BEFORE) \ | |
1706 | emit_call_insn_before_setloc (INSN, BEFORE, INSN_LOCATOR (BEFORE)) | |
1707 | #define emit_insn_after_sameloc(INSN, AFTER) \ | |
1708 | emit_insn_after_setloc (INSN, AFTER, INSN_LOCATOR (AFTER)) | |
1709 | #define emit_jump_insn_after_sameloc(INSN, AFTER) \ | |
1710 | emit_jump_insn_after_setloc (INSN, AFTER, INSN_LOCATOR (AFTER)) | |
1711 | #define emit_call_insn_after_sameloc(INSN, AFTER) \ | |
1712 | emit_call_insn_after_setloc (INSN, AFTER, INSN_LOCATOR (AFTER)) | |
1713 | ||
1292ec0c | 1714 | /* In cfglayout.c */ |
0c20a65f AJ |
1715 | extern tree choose_inner_scope (tree, tree); |
1716 | extern int insn_line (rtx); | |
1717 | extern const char * insn_file (rtx); | |
9ae130f8 JH |
1718 | extern int locator_line (int); |
1719 | extern const char * locator_file (int); | |
0435312e | 1720 | extern int prologue_locator, epilogue_locator; |
1292ec0c | 1721 | |
4eb00163 | 1722 | /* In jump.c */ |
0c20a65f AJ |
1723 | extern enum rtx_code reverse_condition (enum rtx_code); |
1724 | extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); | |
1725 | extern enum rtx_code swap_condition (enum rtx_code); | |
1726 | extern enum rtx_code unsigned_condition (enum rtx_code); | |
1727 | extern enum rtx_code signed_condition (enum rtx_code); | |
1728 | extern void mark_jump_label (rtx, rtx, int); | |
1729 | extern void cleanup_barriers (void); | |
4eb00163 | 1730 | |
4eb00163 | 1731 | /* In jump.c */ |
0c20a65f AJ |
1732 | extern bool squeeze_notes (rtx *, rtx *); |
1733 | extern rtx delete_related_insns (rtx); | |
1734 | extern void delete_jump (rtx); | |
1735 | extern void delete_barrier (rtx); | |
1736 | extern rtx get_label_before (rtx); | |
1737 | extern rtx get_label_after (rtx); | |
1738 | extern rtx follow_jumps (rtx); | |
4eb00163 JO |
1739 | |
1740 | /* In recog.c */ | |
0c20a65f | 1741 | extern rtx *find_constant_term_loc (rtx *); |
4eb00163 JO |
1742 | |
1743 | /* In emit-rtl.c */ | |
0c20a65f | 1744 | extern rtx try_split (rtx, rtx, int); |
6b24c259 | 1745 | extern int split_branch_probability; |
4eb00163 JO |
1746 | |
1747 | /* In unknown file */ | |
0c20a65f | 1748 | extern rtx split_insns (rtx, rtx); |
4eb00163 JO |
1749 | |
1750 | /* In simplify-rtx.c */ | |
0c20a65f AJ |
1751 | extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, |
1752 | enum machine_mode); | |
1753 | extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, | |
1754 | rtx); | |
1755 | extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, | |
1756 | enum machine_mode, rtx, rtx, rtx); | |
7ce3e360 RS |
1757 | extern rtx simplify_const_relational_operation (enum rtx_code, |
1758 | enum machine_mode, rtx, rtx); | |
0c20a65f | 1759 | extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, |
7ce3e360 | 1760 | enum machine_mode, rtx, rtx); |
0c20a65f AJ |
1761 | extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); |
1762 | extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, | |
1763 | enum machine_mode); | |
1764 | extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, | |
1765 | enum machine_mode, rtx, rtx, rtx); | |
1766 | extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, | |
1767 | enum machine_mode, rtx, rtx); | |
1768 | extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, | |
1769 | unsigned int); | |
1770 | extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, | |
1771 | unsigned int); | |
1772 | extern rtx simplify_replace_rtx (rtx, rtx, rtx); | |
1773 | extern rtx simplify_rtx (rtx); | |
1774 | extern rtx avoid_constant_pool_reference (rtx); | |
4eb00163 | 1775 | |
4eb00163 | 1776 | /* In function.c */ |
0c20a65f | 1777 | extern rtx gen_mem_addressof (rtx, tree, int); |
4eb00163 | 1778 | |
4eb00163 | 1779 | /* In regclass.c */ |
fee226d2 R |
1780 | extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, |
1781 | bool); | |
4eb00163 JO |
1782 | |
1783 | /* In emit-rtl.c */ | |
0c20a65f | 1784 | extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); |
9ae8ffe7 | 1785 | |
e9a25f70 JL |
1786 | /* Functions in rtlanal.c */ |
1787 | ||
b1cdafbb JH |
1788 | /* Single set is implemented as macro for performance reasons. */ |
1789 | #define single_set(I) (INSN_P (I) \ | |
1790 | ? (GET_CODE (PATTERN (I)) == SET \ | |
1791 | ? PATTERN (I) : single_set_1 (I)) \ | |
1792 | : NULL_RTX) | |
2130b7fb | 1793 | #define single_set_1(I) single_set_2 (I, PATTERN (I)) |
b1cdafbb | 1794 | |
39811184 | 1795 | /* Structure used for passing data to REPLACE_LABEL. */ |
4af16369 | 1796 | typedef struct replace_label_data |
39811184 JZ |
1797 | { |
1798 | rtx r1; | |
1799 | rtx r2; | |
4af16369 JZ |
1800 | bool update_label_nuses; |
1801 | } replace_label_data; | |
39811184 | 1802 | |
0c20a65f AJ |
1803 | extern int rtx_addr_can_trap_p (rtx); |
1804 | extern bool nonzero_address_p (rtx); | |
1805 | extern int rtx_unstable_p (rtx); | |
1806 | extern int rtx_varies_p (rtx, int); | |
1807 | extern int rtx_addr_varies_p (rtx, int); | |
1808 | extern HOST_WIDE_INT get_integer_term (rtx); | |
1809 | extern rtx get_related_value (rtx); | |
1810 | extern rtx get_jump_table_offset (rtx, rtx *); | |
1811 | extern int global_reg_mentioned_p (rtx); | |
1812 | extern int reg_mentioned_p (rtx, rtx); | |
1813 | extern int count_occurrences (rtx, rtx, int); | |
1814 | extern int reg_referenced_p (rtx, rtx); | |
1815 | extern int reg_used_between_p (rtx, rtx, rtx); | |
1816 | extern int reg_referenced_between_p (rtx, rtx, rtx); | |
1817 | extern int reg_set_between_p (rtx, rtx, rtx); | |
1818 | extern int regs_set_between_p (rtx, rtx, rtx); | |
1819 | extern int commutative_operand_precedence (rtx); | |
1820 | extern int swap_commutative_operands_p (rtx, rtx); | |
1821 | extern int modified_between_p (rtx, rtx, rtx); | |
1822 | extern int no_labels_between_p (rtx, rtx); | |
1823 | extern int no_jumps_between_p (rtx, rtx); | |
1824 | extern int modified_in_p (rtx, rtx); | |
1825 | extern int insn_dependent_p (rtx, rtx); | |
1826 | extern int reg_set_p (rtx, rtx); | |
1827 | extern rtx single_set_2 (rtx, rtx); | |
1828 | extern int multiple_sets (rtx); | |
1829 | extern int set_noop_p (rtx); | |
1830 | extern int noop_move_p (rtx); | |
1831 | extern rtx find_last_value (rtx, rtx *, rtx, int); | |
1832 | extern int refers_to_regno_p (unsigned int, unsigned int, rtx, rtx *); | |
1833 | extern int reg_overlap_mentioned_p (rtx, rtx); | |
1834 | extern rtx set_of (rtx, rtx); | |
1835 | extern void note_stores (rtx, void (*) (rtx, rtx, void *), void *); | |
1836 | extern void note_uses (rtx *, void (*) (rtx *, void *), void *); | |
0c20a65f AJ |
1837 | extern int dead_or_set_p (rtx, rtx); |
1838 | extern int dead_or_set_regno_p (rtx, unsigned int); | |
1839 | extern rtx find_reg_note (rtx, enum reg_note, rtx); | |
1840 | extern rtx find_regno_note (rtx, enum reg_note, unsigned int); | |
1841 | extern rtx find_reg_equal_equiv_note (rtx); | |
1842 | extern int find_reg_fusage (rtx, enum rtx_code, rtx); | |
1843 | extern int find_regno_fusage (rtx, enum rtx_code, unsigned int); | |
1844 | extern int pure_call_p (rtx); | |
1845 | extern void remove_note (rtx, rtx); | |
1846 | extern int side_effects_p (rtx); | |
1847 | extern int volatile_refs_p (rtx); | |
1848 | extern int volatile_insn_p (rtx); | |
1849 | extern int may_trap_p (rtx); | |
1850 | extern int inequality_comparisons_p (rtx); | |
1851 | extern rtx replace_rtx (rtx, rtx, rtx); | |
1852 | extern rtx replace_regs (rtx, rtx *, unsigned int, int); | |
1853 | extern int replace_label (rtx *, void *); | |
1854 | extern int rtx_referenced_p (rtx, rtx); | |
1855 | extern bool tablejump_p (rtx, rtx *, rtx *); | |
1856 | extern int computed_jump_p (rtx); | |
1857 | typedef int (*rtx_function) (rtx *, void *); | |
1858 | extern int for_each_rtx (rtx *, rtx_function, void *); | |
1859 | extern rtx regno_use_in (unsigned int, rtx); | |
1860 | extern int auto_inc_p (rtx); | |
1861 | extern int in_expr_list_p (rtx, rtx); | |
1862 | extern void remove_node_from_expr_list (rtx, rtx *); | |
1863 | extern int insns_safe_to_move_p (rtx, rtx, rtx *); | |
1864 | extern int loc_mentioned_in_p (rtx *, rtx); | |
1865 | extern rtx find_first_parameter_load (rtx, rtx); | |
1866 | extern bool keep_with_call_p (rtx); | |
432f982f | 1867 | extern bool label_is_jump_target_p (rtx, rtx); |
6f29feb1 | 1868 | |
ae0b51ef JL |
1869 | /* flow.c */ |
1870 | ||
0c20a65f | 1871 | extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT); |
e2500fed GK |
1872 | |
1873 | /* lists.c */ | |
1874 | ||
3d7aafde AJ |
1875 | void free_EXPR_LIST_list (rtx *); |
1876 | void free_INSN_LIST_list (rtx *); | |
1877 | void free_EXPR_LIST_node (rtx); | |
1878 | void free_INSN_LIST_node (rtx); | |
1879 | rtx alloc_INSN_LIST (rtx, rtx); | |
1880 | rtx alloc_EXPR_LIST (int, rtx, rtx); | |
ae0b51ef JL |
1881 | |
1882 | /* regclass.c */ | |
1883 | ||
6f29feb1 | 1884 | /* Maximum number of parallel sets and clobbers in any insn in this fn. |
d91edf86 | 1885 | Always at least 3, since the combiner could put that many together |
6f29feb1 JW |
1886 | and we want this to remain correct for all the remaining passes. */ |
1887 | ||
1888 | extern int max_parallel; | |
1889 | ||
e0c6d139 | 1890 | /* Free up register info memory. */ |
0c20a65f | 1891 | extern void free_reg_info (void); |
e0c6d139 | 1892 | |
ae0b51ef | 1893 | /* recog.c */ |
0c20a65f AJ |
1894 | extern int asm_noperands (rtx); |
1895 | extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, | |
1896 | enum machine_mode *); | |
6f29feb1 | 1897 | |
0c20a65f AJ |
1898 | extern enum reg_class reg_preferred_class (int); |
1899 | extern enum reg_class reg_alternate_class (int); | |
6f29feb1 | 1900 | |
0c20a65f | 1901 | extern rtx get_first_nonparm_insn (void); |
6f29feb1 | 1902 | |
0c20a65f AJ |
1903 | extern void split_all_insns (int); |
1904 | extern void split_all_insns_noflow (void); | |
6a73406e | 1905 | |
68d75312 | 1906 | #define MAX_SAVED_CONST_INT 64 |
e2500fed | 1907 | extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; |
68d75312 | 1908 | |
5da077de AS |
1909 | #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) |
1910 | #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) | |
1911 | #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) | |
1912 | #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) | |
e2500fed | 1913 | extern GTY(()) rtx const_true_rtx; |
a8efe40d | 1914 | |
e2500fed | 1915 | extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; |
a8efe40d | 1916 | |
f590cca1 | 1917 | /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the |
a8efe40d RK |
1918 | same as VOIDmode. */ |
1919 | ||
1920 | #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) | |
1921 | ||
1922 | /* Likewise, for the constants 1 and 2. */ | |
1923 | ||
1924 | #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) | |
1925 | #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) | |
6f29feb1 | 1926 | |
5da077de AS |
1927 | /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg |
1928 | is used to represent the frame pointer. This is because the | |
1929 | hard frame pointer and the automatic variables are separated by an amount | |
1930 | that cannot be determined until after register allocation. We can assume | |
1931 | that in this case ELIMINABLE_REGS will be defined, one action of which | |
eebedaa5 | 1932 | will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ |
5da077de AS |
1933 | #ifndef HARD_FRAME_POINTER_REGNUM |
1934 | #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM | |
1935 | #endif | |
1936 | ||
1937 | /* Index labels for global_rtl. */ | |
1938 | enum global_rtl_index | |
68d75312 | 1939 | { |
5da077de AS |
1940 | GR_PC, |
1941 | GR_CC0, | |
1942 | GR_STACK_POINTER, | |
1943 | GR_FRAME_POINTER, | |
1944 | /* For register elimination to work properly these hard_frame_pointer_rtx, | |
1945 | frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to | |
1946 | the same register. */ | |
1947 | #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1948 | GR_ARG_POINTER = GR_FRAME_POINTER, | |
1949 | #endif | |
1950 | #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM | |
1951 | GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, | |
1952 | #else | |
1953 | GR_HARD_FRAME_POINTER, | |
1954 | #endif | |
1955 | #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM | |
1956 | #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM | |
1957 | GR_ARG_POINTER = GR_HARD_FRAME_POINTER, | |
1958 | #else | |
1959 | GR_ARG_POINTER, | |
1960 | #endif | |
1961 | #endif | |
1962 | GR_VIRTUAL_INCOMING_ARGS, | |
1963 | GR_VIRTUAL_STACK_ARGS, | |
1964 | GR_VIRTUAL_STACK_DYNAMIC, | |
1965 | GR_VIRTUAL_OUTGOING_ARGS, | |
1966 | GR_VIRTUAL_CFA, | |
1967 | ||
1968 | GR_MAX | |
1969 | }; | |
1970 | ||
1971 | /* Pointers to standard pieces of rtx are stored here. */ | |
e2500fed | 1972 | extern GTY(()) rtx global_rtl[GR_MAX]; |
5da077de AS |
1973 | |
1974 | /* Standard pieces of rtx, to be substituted directly into things. */ | |
1975 | #define pc_rtx (global_rtl[GR_PC]) | |
1976 | #define cc0_rtx (global_rtl[GR_CC0]) | |
68d75312 | 1977 | |
6f29feb1 JW |
1978 | /* All references to certain hard regs, except those created |
1979 | by allocating pseudo regs into them (when that's possible), | |
1980 | go through these unique rtx objects. */ | |
5da077de AS |
1981 | #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) |
1982 | #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) | |
1983 | #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) | |
1984 | #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) | |
68d75312 | 1985 | |
e2500fed | 1986 | extern GTY(()) rtx pic_offset_table_rtx; |
e2500fed GK |
1987 | extern GTY(()) rtx static_chain_rtx; |
1988 | extern GTY(()) rtx static_chain_incoming_rtx; | |
1989 | extern GTY(()) rtx return_address_pointer_rtx; | |
3b80f6ca RH |
1990 | |
1991 | /* Include the RTL generation functions. */ | |
1992 | ||
1993 | #ifndef NO_GENRTL_H | |
1994 | #include "genrtl.h" | |
1995 | #endif | |
1996 | ||
41472af8 MM |
1997 | /* There are some RTL codes that require special attention; the |
1998 | generation functions included above do the raw handling. If you | |
a2a8cc44 | 1999 | add to this list, modify special_rtx in gengenrtl.c as well. */ |
3b80f6ca | 2000 | |
0c20a65f AJ |
2001 | extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); |
2002 | extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); | |
2003 | extern rtx gen_raw_REG (enum machine_mode, int); | |
2004 | extern rtx gen_rtx_REG (enum machine_mode, unsigned); | |
2005 | extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); | |
2006 | extern rtx gen_rtx_MEM (enum machine_mode, rtx); | |
3b80f6ca | 2007 | |
aefdd5ab JL |
2008 | /* We need the cast here to ensure that we get the same result both with |
2009 | and without prototypes. */ | |
2010 | #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N)) | |
3b80f6ca | 2011 | |
6f29feb1 JW |
2012 | /* Virtual registers are used during RTL generation to refer to locations into |
2013 | the stack frame when the actual location isn't known until RTL generation | |
2014 | is complete. The routine instantiate_virtual_regs replaces these with | |
2015 | the proper value, which is normally {frame,arg,stack}_pointer_rtx plus | |
2016 | a constant. */ | |
2017 | ||
2018 | #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) | |
2019 | ||
2020 | /* This points to the first word of the incoming arguments passed on the stack, | |
2021 | either by the caller or by the callee when pretending it was passed by the | |
2022 | caller. */ | |
2023 | ||
5da077de | 2024 | #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) |
6f29feb1 JW |
2025 | |
2026 | #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) | |
2027 | ||
60343c3b | 2028 | /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first |
6f29feb1 JW |
2029 | variable on the stack. Otherwise, it points to the first variable on |
2030 | the stack. */ | |
2031 | ||
5da077de | 2032 | #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) |
6f29feb1 JW |
2033 | |
2034 | #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) | |
2035 | ||
2036 | /* This points to the location of dynamically-allocated memory on the stack | |
2037 | immediately after the stack pointer has been adjusted by the amount | |
2038 | desired. */ | |
2039 | ||
5da077de | 2040 | #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) |
6f29feb1 JW |
2041 | |
2042 | #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) | |
2043 | ||
2044 | /* This points to the location in the stack at which outgoing arguments should | |
2045 | be written when the stack is pre-pushed (arguments pushed using push | |
2046 | insns always use sp). */ | |
2047 | ||
5da077de | 2048 | #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) |
6f29feb1 JW |
2049 | |
2050 | #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) | |
2051 | ||
71038426 | 2052 | /* This points to the Canonical Frame Address of the function. This |
14b493d6 | 2053 | should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, |
71038426 | 2054 | but is calculated relative to the arg pointer for simplicity; the |
f590cca1 | 2055 | frame pointer nor stack pointer are necessarily fixed relative to |
71038426 RH |
2056 | the CFA until after reload. */ |
2057 | ||
5da077de | 2058 | #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) |
71038426 RH |
2059 | |
2060 | #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) | |
2061 | ||
2062 | #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) | |
6f29feb1 | 2063 | |
a06ef755 | 2064 | /* Nonzero if REGNUM is a pointer into the stack frame. */ |
3d7aafde | 2065 | #define REGNO_PTR_FRAME_P(REGNUM) \ |
a06ef755 RK |
2066 | ((REGNUM) == STACK_POINTER_REGNUM \ |
2067 | || (REGNUM) == FRAME_POINTER_REGNUM \ | |
2068 | || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ | |
2069 | || (REGNUM) == ARG_POINTER_REGNUM \ | |
2070 | || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ | |
2071 | && (REGNUM) <= LAST_VIRTUAL_REGISTER)) | |
2072 | ||
848e0190 | 2073 | /* REGNUM never really appearing in the INSN stream. */ |
cf403648 | 2074 | #define INVALID_REGNUM (~(unsigned int) 0) |
848e0190 | 2075 | |
0c20a65f | 2076 | extern rtx output_constant_def (tree, int); |
75c20980 | 2077 | extern rtx lookup_constant_def (tree); |
6f29feb1 | 2078 | |
0ea0e871 JL |
2079 | /* Nonzero after the second flow pass has completed. |
2080 | Set to 1 or 0 by toplev.c */ | |
2081 | extern int flow2_completed; | |
2082 | ||
6f29feb1 | 2083 | /* Nonzero after end of reload pass. |
0ea0e871 | 2084 | Set to 1 or 0 by reload1.c. */ |
6f29feb1 JW |
2085 | |
2086 | extern int reload_completed; | |
2087 | ||
fe3ad572 SC |
2088 | /* Nonzero after thread_prologue_and_epilogue_insns has run. */ |
2089 | extern int epilogue_completed; | |
2090 | ||
6f29feb1 JW |
2091 | /* Set to 1 while reload_as_needed is operating. |
2092 | Required by some machines to handle any generated moves differently. */ | |
2093 | ||
2094 | extern int reload_in_progress; | |
2095 | ||
2096 | /* If this is nonzero, we do not bother generating VOLATILE | |
2097 | around volatile memory references, and we are willing to | |
2098 | output indirect addresses. If cse is to follow, we reject | |
2099 | indirect addresses so a useful potential cse is generated; | |
2100 | if it is used only once, instruction combination will produce | |
2101 | the same indirect address eventually. */ | |
2102 | extern int cse_not_expected; | |
2103 | ||
f1db3576 JL |
2104 | /* Set to nonzero before life analysis to indicate that it is unsafe to |
2105 | generate any new pseudo registers. */ | |
2106 | extern int no_new_pseudos; | |
2107 | ||
f5118aa5 | 2108 | /* Translates rtx code to tree code, for those codes needed by |
88efc60a RK |
2109 | REAL_ARITHMETIC. The function returns an int because the caller may not |
2110 | know what `enum tree_code' means. */ | |
2111 | ||
0c20a65f | 2112 | extern int rtx_to_tree_code (enum rtx_code); |
9ae8ffe7 | 2113 | |
ac957f13 | 2114 | /* In cse.c */ |
0c20a65f | 2115 | extern int delete_trivially_dead_insns (rtx, int); |
ac957f13 | 2116 | #ifdef BUFSIZ |
0c20a65f | 2117 | extern int cse_main (rtx, int, int, FILE *); |
ac957f13 | 2118 | #endif |
e129d93a | 2119 | extern void cse_condition_code_reg (void); |
ac957f13 JL |
2120 | |
2121 | /* In jump.c */ | |
0c20a65f AJ |
2122 | extern int comparison_dominates_p (enum rtx_code, enum rtx_code); |
2123 | extern int condjump_p (rtx); | |
2124 | extern int any_condjump_p (rtx); | |
2125 | extern int any_uncondjump_p (rtx); | |
2126 | extern int safe_to_remove_jump_p (rtx); | |
2127 | extern rtx pc_set (rtx); | |
2128 | extern rtx condjump_label (rtx); | |
2129 | extern int simplejump_p (rtx); | |
2130 | extern int returnjump_p (rtx); | |
2131 | extern int onlyjump_p (rtx); | |
2132 | extern int only_sets_cc0_p (rtx); | |
2133 | extern int sets_cc0_p (rtx); | |
2134 | extern int invert_jump_1 (rtx, rtx); | |
2135 | extern int invert_jump (rtx, rtx, int); | |
2136 | extern int rtx_renumbered_equal_p (rtx, rtx); | |
2137 | extern int true_regnum (rtx); | |
2138 | extern unsigned int reg_or_subregno (rtx); | |
2139 | extern int redirect_jump_1 (rtx, rtx); | |
2140 | extern int redirect_jump (rtx, rtx, int); | |
2141 | extern void rebuild_jump_labels (rtx); | |
2142 | extern enum rtx_code reversed_comparison_code (rtx, rtx); | |
2143 | extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, | |
2144 | rtx, rtx, rtx); | |
2145 | extern void delete_for_peephole (rtx, rtx); | |
2146 | extern int condjump_in_parallel_p (rtx); | |
0c20a65f | 2147 | extern void purge_line_number_notes (rtx); |
14bf4a33 | 2148 | |
eebedaa5 | 2149 | /* In emit-rtl.c. */ |
0c20a65f AJ |
2150 | extern int max_reg_num (void); |
2151 | extern int max_label_num (void); | |
2152 | extern int get_first_label_num (void); | |
6de9cd9a | 2153 | extern void maybe_set_first_label_num (rtx); |
0c20a65f AJ |
2154 | extern void delete_insns_since (rtx); |
2155 | extern void mark_reg_pointer (rtx, int); | |
2156 | extern void mark_user_reg (rtx); | |
2157 | extern void reset_used_flags (rtx); | |
2c07f13b | 2158 | extern void set_used_flags (rtx); |
0c20a65f AJ |
2159 | extern void reorder_insns (rtx, rtx, rtx); |
2160 | extern void reorder_insns_nobb (rtx, rtx, rtx); | |
2161 | extern int get_max_uid (void); | |
2162 | extern int in_sequence_p (void); | |
2163 | extern void force_next_line_note (void); | |
2164 | extern void init_emit (void); | |
2165 | extern void init_emit_once (int); | |
2166 | extern void push_topmost_sequence (void); | |
2167 | extern void pop_topmost_sequence (void); | |
0c20a65f AJ |
2168 | extern void reverse_comparison (rtx); |
2169 | extern void set_new_first_and_last_insn (rtx, rtx); | |
0c20a65f AJ |
2170 | extern void set_new_last_label_num (int); |
2171 | extern void unshare_all_rtl_again (rtx); | |
2c07f13b JH |
2172 | extern void unshare_all_rtl_in_chain (rtx); |
2173 | extern void verify_rtl_sharing (void); | |
0c20a65f AJ |
2174 | extern void set_first_insn (rtx); |
2175 | extern void set_last_insn (rtx); | |
2176 | extern void link_cc0_insns (rtx); | |
2177 | extern void add_insn (rtx); | |
2178 | extern void add_insn_before (rtx, rtx); | |
2179 | extern void add_insn_after (rtx, rtx); | |
2180 | extern void remove_insn (rtx); | |
0c20a65f AJ |
2181 | extern void emit_insn_after_with_line_notes (rtx, rtx, rtx); |
2182 | extern enum rtx_code classify_insn (rtx); | |
2183 | extern rtx emit (rtx); | |
a11759a3 JR |
2184 | /* Query and clear/ restore no_line_numbers. This is used by the |
2185 | switch / case handling in stmt.c to give proper line numbers in | |
2186 | warnings about unreachable code. */ | |
0c20a65f AJ |
2187 | int force_line_numbers (void); |
2188 | void restore_line_number_status (int old_value); | |
2189 | extern void renumber_insns (FILE *); | |
2190 | extern void remove_unnecessary_notes (void); | |
2191 | extern rtx delete_insn (rtx); | |
2192 | extern void delete_insn_chain (rtx, rtx); | |
2193 | extern rtx unlink_insn_chain (rtx, rtx); | |
2194 | extern rtx delete_insn_and_edges (rtx); | |
2195 | extern void delete_insn_chain_and_edges (rtx, rtx); | |
dad822d3 | 2196 | extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); |
ac957f13 | 2197 | |
ac957f13 | 2198 | /* In combine.c */ |
79a490a9 AJ |
2199 | extern int combine_instructions (rtx, unsigned int); |
2200 | extern unsigned int extended_count (rtx, enum machine_mode, int); | |
2201 | extern rtx remove_death (unsigned int, rtx); | |
ac957f13 | 2202 | #ifdef BUFSIZ |
79a490a9 AJ |
2203 | extern void dump_combine_stats (FILE *); |
2204 | extern void dump_combine_total_stats (FILE *); | |
ac957f13 | 2205 | #endif |
62551c66 | 2206 | /* In web.c */ |
80fcc7bc | 2207 | extern void web_main (void); |
ac957f13 | 2208 | |
dad822d3 | 2209 | /* In sched-rgn.c. */ |
ac957f13 | 2210 | #ifdef BUFSIZ |
0c20a65f | 2211 | extern void schedule_insns (FILE *); |
dad822d3 PB |
2212 | #endif |
2213 | ||
2214 | /* In sched-ebb.c. */ | |
2215 | #ifdef BUFSIZ | |
0c20a65f | 2216 | extern void schedule_ebbs (FILE *); |
ac957f13 | 2217 | #endif |
dad822d3 PB |
2218 | |
2219 | /* In haifa-sched.c. */ | |
0c20a65f | 2220 | extern void fix_sched_param (const char *, const char *); |
ac957f13 JL |
2221 | |
2222 | /* In print-rtl.c */ | |
47c10e9b | 2223 | extern const char *print_rtx_head; |
0c20a65f AJ |
2224 | extern void debug_rtx (rtx); |
2225 | extern void debug_rtx_list (rtx, int); | |
2226 | extern void debug_rtx_range (rtx, rtx); | |
2227 | extern rtx debug_rtx_find (rtx, int); | |
ac957f13 | 2228 | #ifdef BUFSIZ |
0c20a65f AJ |
2229 | extern void print_mem_expr (FILE *, tree); |
2230 | extern void print_rtl (FILE *, rtx); | |
2231 | extern void print_simple_rtl (FILE *, rtx); | |
2232 | extern int print_rtl_single (FILE *, rtx); | |
2233 | extern void print_inline_rtx (FILE *, rtx, int); | |
ac957f13 JL |
2234 | #endif |
2235 | ||
2236 | /* In loop.c */ | |
0c20a65f | 2237 | extern void init_loop (void); |
ac957f13 | 2238 | #ifdef BUFSIZ |
0c20a65f | 2239 | extern void loop_optimize (rtx, FILE *, int); |
ac957f13 | 2240 | #endif |
fe3ad572 | 2241 | extern void branch_target_load_optimize (rtx, bool); |
ac957f13 JL |
2242 | |
2243 | /* In function.c */ | |
0c20a65f AJ |
2244 | extern void reposition_prologue_and_epilogue_notes (rtx); |
2245 | extern void thread_prologue_and_epilogue_insns (rtx); | |
2246 | extern int prologue_epilogue_contains (rtx); | |
2247 | extern int sibcall_epilogue_contains (rtx); | |
2248 | extern void preserve_rtl_expr_result (rtx); | |
2249 | extern void mark_temp_addr_taken (rtx); | |
2250 | extern void update_temp_slot_address (rtx, rtx); | |
2251 | extern void purge_addressof (rtx); | |
2252 | extern void purge_hard_subreg_sets (rtx); | |
ac957f13 | 2253 | |
ac957f13 | 2254 | /* In stmt.c */ |
0cea056b | 2255 | extern void set_file_and_line_for_stmt (location_t); |
0c20a65f | 2256 | extern void expand_null_return (void); |
6e3077c6 | 2257 | extern void expand_naked_return (void); |
0c20a65f AJ |
2258 | extern void emit_jump (rtx); |
2259 | extern int preserve_subexpressions_p (void); | |
ac957f13 JL |
2260 | |
2261 | /* In expr.c */ | |
0c20a65f AJ |
2262 | extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, |
2263 | unsigned int, int); | |
2e245dac | 2264 | |
ac957f13 | 2265 | /* In flow.c */ |
0c20a65f AJ |
2266 | extern void recompute_reg_usage (rtx, int); |
2267 | extern int initialize_uninitialized_subregs (void); | |
2268 | extern void delete_dead_jumptables (void); | |
ac957f13 | 2269 | #ifdef BUFSIZ |
0c20a65f AJ |
2270 | extern void print_rtl_with_bb (FILE *, rtx); |
2271 | extern void dump_flow_info (FILE *); | |
ac957f13 JL |
2272 | #endif |
2273 | ||
2274 | /* In expmed.c */ | |
0c20a65f AJ |
2275 | extern void init_expmed (void); |
2276 | extern void expand_inc (rtx, rtx); | |
2277 | extern void expand_dec (rtx, rtx); | |
2278 | extern rtx expand_mult_highpart (enum machine_mode, rtx, | |
2279 | unsigned HOST_WIDE_INT, rtx, int, int); | |
ac957f13 | 2280 | |
50b2596f | 2281 | /* In gcse.c */ |
0c20a65f AJ |
2282 | extern bool can_copy_p (enum machine_mode); |
2283 | extern rtx fis_get_condition (rtx); | |
50b2596f | 2284 | #ifdef BUFSIZ |
0c20a65f AJ |
2285 | extern int gcse_main (rtx, FILE *); |
2286 | extern int bypass_jumps (FILE *); | |
f9957958 | 2287 | extern void gcse_after_reload_main (rtx, FILE *); |
50b2596f KG |
2288 | #endif |
2289 | ||
ac957f13 | 2290 | /* In global.c */ |
0c20a65f | 2291 | extern void mark_elimination (int, int); |
ac957f13 | 2292 | #ifdef BUFSIZ |
0c20a65f AJ |
2293 | extern int global_alloc (FILE *); |
2294 | extern void dump_global_regs (FILE *); | |
ac957f13 | 2295 | #endif |
cab634f2 | 2296 | #ifdef HARD_CONST |
cff9f8d5 | 2297 | /* Yes, this ifdef is silly, but HARD_REG_SET is not always defined. */ |
0c20a65f | 2298 | extern void retry_global_alloc (int, HARD_REG_SET); |
cab634f2 | 2299 | #endif |
0c20a65f | 2300 | extern void build_insn_chain (rtx); |
ac957f13 JL |
2301 | |
2302 | /* In regclass.c */ | |
0c20a65f AJ |
2303 | extern int reg_classes_intersect_p (enum reg_class, enum reg_class); |
2304 | extern int reg_class_subset_p (enum reg_class, enum reg_class); | |
2305 | extern void globalize_reg (int); | |
28420116 | 2306 | extern void init_reg_modes_once (void); |
0c20a65f AJ |
2307 | extern void init_regs (void); |
2308 | extern void init_fake_stack_mems (void); | |
2309 | extern void init_reg_sets (void); | |
2310 | extern void regset_release_memory (void); | |
2311 | extern void regclass_init (void); | |
2312 | extern void regclass (rtx, int, FILE *); | |
2313 | extern void reg_scan (rtx, unsigned int, int); | |
2314 | extern void reg_scan_update (rtx, rtx, unsigned int); | |
2315 | extern void fix_register (const char *, int, int); | |
cff9f8d5 | 2316 | #ifdef HARD_CONST |
0c20a65f AJ |
2317 | extern void cannot_change_mode_set_regs (HARD_REG_SET *, |
2318 | enum machine_mode, unsigned int); | |
cff9f8d5 | 2319 | #endif |
0c20a65f AJ |
2320 | extern bool invalid_mode_change_p (unsigned int, enum reg_class, |
2321 | enum machine_mode); | |
cdadb1dd | 2322 | |
0c20a65f | 2323 | extern int delete_null_pointer_checks (rtx); |
a157febd | 2324 | |
50b2596f KG |
2325 | /* In regmove.c */ |
2326 | #ifdef BUFSIZ | |
0c20a65f | 2327 | extern void regmove_optimize (rtx, int, FILE *); |
50b2596f | 2328 | #endif |
0c20a65f | 2329 | extern void combine_stack_adjustments (void); |
50b2596f KG |
2330 | |
2331 | /* In reorg.c */ | |
2332 | #ifdef BUFSIZ | |
0c20a65f | 2333 | extern void dbr_schedule (rtx, FILE *); |
50b2596f KG |
2334 | #endif |
2335 | ||
ac957f13 JL |
2336 | /* In local-alloc.c */ |
2337 | #ifdef BUFSIZ | |
0c20a65f | 2338 | extern void dump_local_alloc (FILE *); |
ac957f13 | 2339 | #endif |
0c20a65f | 2340 | extern int local_alloc (void); |
ac957f13 | 2341 | |
ac957f13 JL |
2342 | /* In reg-stack.c */ |
2343 | #ifdef BUFSIZ | |
0c20a65f | 2344 | extern bool reg_to_stack (rtx, FILE *); |
ac957f13 | 2345 | #endif |
ac957f13 | 2346 | |
ac957f13 | 2347 | /* In calls.c */ |
ebb1b59a BS |
2348 | enum libcall_type |
2349 | { | |
2350 | LCT_NORMAL = 0, | |
2351 | LCT_CONST = 1, | |
2352 | LCT_PURE = 2, | |
2353 | LCT_CONST_MAKE_BLOCK = 3, | |
695ee791 | 2354 | LCT_PURE_MAKE_BLOCK = 4, |
9555a122 | 2355 | LCT_NORETURN = 5, |
9d98f8f9 | 2356 | LCT_THROW = 6, |
9defc9b7 RH |
2357 | LCT_ALWAYS_RETURN = 7, |
2358 | LCT_RETURNS_TWICE = 8 | |
ebb1b59a BS |
2359 | }; |
2360 | ||
0c20a65f AJ |
2361 | extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, |
2362 | ...); | |
2363 | extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, | |
2364 | enum machine_mode, int, ...); | |
ac957f13 JL |
2365 | |
2366 | /* In unroll.c */ | |
0c20a65f | 2367 | extern int set_dominates_use (int, int, int, rtx, rtx); |
ac957f13 JL |
2368 | |
2369 | /* In varasm.c */ | |
0c20a65f AJ |
2370 | extern int in_data_section (void); |
2371 | extern void init_varasm_once (void); | |
ac957f13 JL |
2372 | |
2373 | /* In rtl.c */ | |
0c20a65f AJ |
2374 | extern void init_rtl (void); |
2375 | extern void traverse_md_constants (int (*) (void **, void *), void *); | |
c25c12b8 | 2376 | struct md_constant { char *name, *value; }; |
ac957f13 | 2377 | |
bcdaba58 | 2378 | #ifdef BUFSIZ |
0c20a65f AJ |
2379 | extern int read_skip_spaces (FILE *); |
2380 | extern rtx read_rtx (FILE *); | |
bcdaba58 RH |
2381 | #endif |
2382 | ||
2383 | extern const char *read_rtx_filename; | |
2384 | extern int read_rtx_lineno; | |
2385 | ||
987009bf ZW |
2386 | /* Redefine abort to report an internal error w/o coredump, and |
2387 | reporting the location of the error in the source file. This logic | |
2388 | is duplicated in rtl.h and tree.h because every file that needs the | |
2389 | special abort includes one or both. toplev.h gets too few files, | |
2390 | system.h gets too many. */ | |
2391 | ||
0c20a65f | 2392 | extern void fancy_abort (const char *, int, const char *) |
987009bf | 2393 | ATTRIBUTE_NORETURN; |
fbfc1192 | 2394 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) |
987009bf | 2395 | |
ac957f13 | 2396 | /* In alias.c */ |
4682ae04 AJ |
2397 | extern void clear_reg_alias_info (rtx); |
2398 | extern rtx canon_rtx (rtx); | |
2399 | extern int true_dependence (rtx, enum machine_mode, rtx, int (*)(rtx, int)); | |
2400 | extern rtx get_addr (rtx); | |
2401 | extern int canon_true_dependence (rtx, enum machine_mode, rtx, rtx, | |
2402 | int (*)(rtx, int)); | |
2403 | extern int read_dependence (rtx, rtx); | |
2404 | extern int anti_dependence (rtx, rtx); | |
2405 | extern int output_dependence (rtx, rtx); | |
d2399d75 | 2406 | extern int unchanging_anti_dependence (rtx, rtx); |
4682ae04 AJ |
2407 | extern void mark_constant_function (void); |
2408 | extern void init_alias_once (void); | |
2409 | extern void init_alias_analysis (void); | |
2410 | extern void end_alias_analysis (void); | |
2411 | extern rtx addr_side_effect_eval (rtx, int, int); | |
2412 | extern bool memory_modified_in_insn_p (rtx, rtx); | |
2413 | extern rtx find_base_term (rtx); | |
3e89ed8d | 2414 | extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); |
bb1acb3e RH |
2415 | extern rtx get_reg_known_value (unsigned int); |
2416 | extern bool get_reg_known_equiv_p (unsigned int); | |
4c649323 | 2417 | |
0a1c58a2 JL |
2418 | /* In sibcall.c */ |
2419 | typedef enum { | |
2420 | sibcall_use_normal = 1, | |
2421 | sibcall_use_tail_recursion, | |
2422 | sibcall_use_sibcall | |
2423 | } sibcall_use_t; | |
2424 | ||
0c20a65f AJ |
2425 | extern void optimize_sibling_and_tail_recursive_calls (void); |
2426 | extern void replace_call_placeholder (rtx, sibcall_use_t); | |
0a1c58a2 | 2427 | |
21b2cd73 | 2428 | #ifdef STACK_REGS |
0c20a65f | 2429 | extern int stack_regs_mentioned (rtx insn); |
21b2cd73 JH |
2430 | #endif |
2431 | ||
a157febd | 2432 | /* In toplev.c */ |
e2500fed | 2433 | extern GTY(()) rtx stack_limit_rtx; |
dfdb644f | 2434 | |
7b82b5da | 2435 | /* In regrename.c */ |
0c20a65f AJ |
2436 | extern void regrename_optimize (void); |
2437 | extern void copyprop_hardreg_forward (void); | |
7b82b5da | 2438 | |
4db384c9 | 2439 | /* In ifcvt.c */ |
0c20a65f | 2440 | extern void if_convert (int); |
2ea64f10 | 2441 | |
4db384c9 | 2442 | /* In predict.c */ |
0c20a65f AJ |
2443 | extern void invert_br_probabilities (rtx); |
2444 | extern bool expensive_function_p (int); | |
5c856b23 | 2445 | /* In tracer.c */ |
0c20a65f | 2446 | extern void tracer (void); |
cff9f8d5 | 2447 | |
014a1138 JZ |
2448 | /* In var-tracking.c */ |
2449 | extern void variable_tracking_main (void); | |
2450 | ||
50654f6c ZD |
2451 | /* In stor-layout.c. */ |
2452 | extern void get_mode_bounds (enum machine_mode, int, rtx *, rtx *); | |
2453 | ||
2454 | /* In loop-unswitch.c */ | |
2455 | extern rtx reversed_condition (rtx); | |
2456 | extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); | |
2457 | ||
2458 | /* In loop-iv.c */ | |
2459 | extern rtx canon_condition (rtx); | |
2460 | extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *); | |
2461 | ||
f6db1481 RH |
2462 | /* In ra.c. */ |
2463 | extern void reg_alloc (void); | |
2464 | ||
88657302 | 2465 | #endif /* ! GCC_RTL_H */ |