1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
25 #include "statistics.h"
31 #include "fixed-value.h"
35 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
36 #undef FLOAT /* Likewise. */
37 #undef ABS /* Likewise. */
38 #undef PC /* Likewise. */
40 /* Value used by some passes to "recognize" noop moves as valid
42 #define NOOP_MOVE_INSN_CODE INT_MAX
44 /* Register Transfer Language EXPRESSIONS CODES */
46 #define RTX_CODE enum rtx_code
49 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
50 #include "rtl.def" /* rtl expressions are documented here */
53 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for
55 Assumes default enum value assignment. */
57 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
58 /* The cast here, saves many elsewhere. */
60 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
63 /* We check bit 0-1 of some rtx class codes in the predicates below. */
65 /* Bit 0 = comparison if 0, arithmetic is 1
66 Bit 1 = 1 if commutative. */
72 /* Must follow the four preceding values. */
79 /* Bit 0 = 1 if constant. */
88 #define RTX_OBJ_MASK (~1)
89 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
90 #define RTX_COMPARE_MASK (~1)
91 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
92 #define RTX_ARITHMETIC_MASK (~1)
93 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
94 #define RTX_BINARY_MASK (~3)
95 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
96 #define RTX_COMMUTATIVE_MASK (~2)
97 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
98 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
100 extern const unsigned char rtx_length[NUM_RTX_CODE];
101 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
103 extern const char * const rtx_name[NUM_RTX_CODE];
104 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
106 extern const char * const rtx_format[NUM_RTX_CODE];
107 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
109 extern const enum rtx_class rtx_class[NUM_RTX_CODE];
110 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
112 extern const unsigned char rtx_code_size[NUM_RTX_CODE];
113 extern const unsigned char rtx_next[NUM_RTX_CODE];
115 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
116 relative to which the offsets are calculated, as explained in rtl.def. */
119 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
120 unsigned min_align: 8;
122 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */
123 unsigned min_after_vec: 1; /* minimum address target label is
124 after the ADDR_DIFF_VEC. */
125 unsigned max_after_vec: 1; /* maximum address target label is
126 after the ADDR_DIFF_VEC. */
127 unsigned min_after_base: 1; /* minimum address target label is
129 unsigned max_after_base: 1; /* maximum address target label is
131 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
132 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
135 } addr_diff_vec_flags;
137 /* Structure used to describe the attributes of a MEM. These are hashed
138 so MEMs that the same attributes share a data structure. This means
139 they cannot be modified in place. If any element is nonzero, it means
140 the value of the corresponding attribute is unknown. */
141 /* ALIGN and SIZE are the alignment and size of the MEM itself,
142 while EXPR can describe a larger underlying object, which might have a
143 stricter alignment; OFFSET is the offset of the MEM within that object. */
144 typedef struct GTY(()) mem_attrs
146 tree expr; /* expr corresponding to MEM. */
147 rtx offset; /* Offset from start of DECL, as CONST_INT. */
148 rtx size; /* Size in bytes, as a CONST_INT. */
149 alias_set_type alias; /* Memory alias set. */
150 unsigned int align; /* Alignment of MEM in bits. */
151 unsigned char addrspace; /* Address space (0 for generic). */
154 /* Structure used to describe the attributes of a REG in similar way as
155 mem_attrs does for MEM above. Note that the OFFSET field is calculated
156 in the same way as for mem_attrs, rather than in the same way as a
157 SUBREG_BYTE. For example, if a big-endian target stores a byte
158 object in the low part of a 4-byte register, the OFFSET field
159 will be -3 rather than 0. */
161 typedef struct GTY(()) reg_attrs {
162 tree decl; /* decl corresponding to REG. */
163 HOST_WIDE_INT offset; /* Offset from start of DECL. */
166 /* Common union for an element of an rtx. */
171 unsigned int rt_uint;
175 enum machine_mode rt_type;
176 addr_diff_vec_flags rt_addr_diff_vec_flags;
177 struct cselib_val_struct *rt_cselib;
179 struct basic_block_def *rt_bb;
182 struct constant_descriptor_rtx *rt_constant;
183 struct dw_cfi_struct *rt_cfi;
185 typedef union rtunion_def rtunion;
187 /* This structure remembers the position of a SYMBOL_REF within an
188 object_block structure. A SYMBOL_REF only provides this information
189 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
190 struct GTY(()) block_symbol {
191 /* The usual SYMBOL_REF fields. */
192 rtunion GTY ((skip)) fld[3];
194 /* The block that contains this object. */
195 struct object_block *block;
197 /* The offset of this object from the start of its block. It is negative
198 if the symbol has not yet been assigned an offset. */
199 HOST_WIDE_INT offset;
202 /* Describes a group of objects that are to be placed together in such
203 a way that their relative positions are known. */
204 struct GTY(()) object_block {
205 /* The section in which these objects should be placed. */
208 /* The alignment of the first object, measured in bits. */
209 unsigned int alignment;
211 /* The total size of the objects, measured in bytes. */
214 /* The SYMBOL_REFs for each object. The vector is sorted in
215 order of increasing offset and the following conditions will
216 hold for each element X:
218 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
219 !SYMBOL_REF_ANCHOR_P (X)
220 SYMBOL_REF_BLOCK (X) == [address of this structure]
221 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
222 VEC(rtx,gc) *objects;
224 /* All the anchor SYMBOL_REFs used to address these objects, sorted
225 in order of increasing offset, and then increasing TLS model.
226 The following conditions will hold for each element X in this vector:
228 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
229 SYMBOL_REF_ANCHOR_P (X)
230 SYMBOL_REF_BLOCK (X) == [address of this structure]
231 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
232 VEC(rtx,gc) *anchors;
235 /* RTL expression ("rtx"). */
237 struct GTY((chain_next ("RTX_NEXT (&%h)"),
238 chain_prev ("RTX_PREV (&%h)"), variable_size)) rtx_def {
239 /* The kind of expression this is. */
240 ENUM_BITFIELD(rtx_code) code: 16;
242 /* The kind of value the expression has. */
243 ENUM_BITFIELD(machine_mode) mode : 8;
245 /* 1 in a MEM if we should keep the alias set for this mem unchanged
246 when we access a component.
247 1 in a CALL_INSN if it is a sibling call.
248 1 in a SET that is for a return.
249 In a CODE_LABEL, part of the two-bit alternate entry field. */
250 unsigned int jump : 1;
251 /* In a CODE_LABEL, part of the two-bit alternate entry field.
252 1 in a MEM if it cannot trap.
253 1 in a CALL_INSN logically equivalent to
254 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
255 unsigned int call : 1;
256 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
257 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
258 1 in a SYMBOL_REF if it addresses something in the per-function
260 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
261 1 in a NOTE, or EXPR_LIST for a const call.
262 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */
263 unsigned int unchanging : 1;
264 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
265 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
266 if it has been deleted.
267 1 in a REG expression if corresponds to a variable declared by the user,
268 0 for an internally generated temporary.
269 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
270 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
272 In a SYMBOL_REF, this flag is used for machine-specific purposes.
273 In a PREFETCH, this flag indicates that it should be considered a scheduling
275 unsigned int volatil : 1;
276 /* 1 in a MEM referring to a field of an aggregate.
277 0 if the MEM was a variable or the result of a * operator in C;
278 1 if it was the result of a . or -> operator (on a struct) in C.
279 1 in a REG if the register is used only in exit code a loop.
280 1 in a SUBREG expression if was generated from a variable with a
282 1 in a CODE_LABEL if the label is used for nonlocal gotos
283 and must not be deleted even if its count is zero.
284 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
285 together with the preceding insn. Valid only within sched.
286 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
287 from the target of a branch. Valid from reorg until end of compilation;
288 cleared before used. */
289 unsigned int in_struct : 1;
290 /* At the end of RTL generation, 1 if this rtx is used. This is used for
291 copying shared structure. See `unshare_all_rtl'.
292 In a REG, this is not needed for that purpose, and used instead
293 in `leaf_renumber_regs_insn'.
294 1 in a SYMBOL_REF, means that emit_library_call
295 has used it as the function. */
296 unsigned int used : 1;
297 /* 1 in an INSN or a SET if this rtx is related to the call frame,
298 either changing how we compute the frame address or saving and
299 restoring registers in the prologue and epilogue.
300 1 in a REG or MEM if it is a pointer.
301 1 in a SYMBOL_REF if it addresses something in the per-function
302 constant string pool. */
303 unsigned frame_related : 1;
304 /* 1 in a REG or PARALLEL that is the current function's return value.
305 1 in a MEM if it refers to a scalar.
306 1 in a SYMBOL_REF for a weak symbol.
307 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. */
308 unsigned return_val : 1;
310 /* The first element of the operands of this rtx.
311 The number of operands and their types are controlled
312 by the `code' field, according to rtl.def. */
315 HOST_WIDE_INT hwint[1];
316 struct block_symbol block_sym;
317 struct real_value rv;
318 struct fixed_value fv;
319 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
322 /* The size in bytes of an rtx header (code, mode and flags). */
323 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
325 /* The size in bytes of an rtx with code CODE. */
326 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
328 #define NULL_RTX (rtx) 0
330 /* The "next" and "previous" RTX, relative to this one. */
332 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
333 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
335 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
337 #define RTX_PREV(X) ((INSN_P (X) \
341 && PREV_INSN (X) != NULL \
342 && NEXT_INSN (PREV_INSN (X)) == X \
343 ? PREV_INSN (X) : NULL)
345 /* Define macros to access the `code' field of the rtx. */
347 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
348 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
350 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
351 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
353 /* RTL vector. These appear inside RTX's when there is a need
354 for a variable number of things. The principle use is inside
355 PARALLEL expressions. */
357 struct GTY((variable_size)) rtvec_def {
358 int num_elem; /* number of elements */
359 rtx GTY ((length ("%h.num_elem"))) elem[1];
362 #define NULL_RTVEC (rtvec) 0
364 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
365 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
367 /* Predicate yielding nonzero iff X is an rtx for a register. */
368 #define REG_P(X) (GET_CODE (X) == REG)
370 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
371 #define MEM_P(X) (GET_CODE (X) == MEM)
373 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
374 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
376 /* Predicate yielding true iff X is an rtx for a double-int
377 or floating point constant. */
378 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
380 /* Predicate yielding nonzero iff X is a label insn. */
381 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
383 /* Predicate yielding nonzero iff X is a jump insn. */
384 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
386 /* Predicate yielding nonzero iff X is a call insn. */
387 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
389 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
390 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
392 /* Predicate yielding nonzero iff X is a debug note/insn. */
393 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
395 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
396 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
398 /* Nonzero if DEBUG_INSN_P may possibly hold. */
399 #define MAY_HAVE_DEBUG_INSNS MAY_HAVE_DEBUG_STMTS
401 /* Predicate yielding nonzero iff X is a real insn. */
403 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
405 /* Predicate yielding nonzero iff X is a note insn. */
406 #define NOTE_P(X) (GET_CODE (X) == NOTE)
408 /* Predicate yielding nonzero iff X is a barrier insn. */
409 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
411 /* Predicate yielding nonzero iff X is a data for a jump table. */
412 #define JUMP_TABLE_DATA_P(INSN) \
413 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \
414 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC))
416 /* 1 if X is a unary operator. */
419 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
421 /* 1 if X is a binary operator. */
423 #define BINARY_P(X) \
424 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
426 /* 1 if X is an arithmetic operator. */
428 #define ARITHMETIC_P(X) \
429 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
430 == RTX_ARITHMETIC_RESULT)
432 /* 1 if X is an arithmetic operator. */
434 #define COMMUTATIVE_ARITH_P(X) \
435 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
437 /* 1 if X is a commutative arithmetic operator or a comparison operator.
438 These two are sometimes selected together because it is possible to
439 swap the two operands. */
441 #define SWAPPABLE_OPERANDS_P(X) \
442 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
443 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
444 | (1 << RTX_COMPARE)))
446 /* 1 if X is a non-commutative operator. */
448 #define NON_COMMUTATIVE_P(X) \
449 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
450 == RTX_NON_COMMUTATIVE_RESULT)
452 /* 1 if X is a commutative operator on integers. */
454 #define COMMUTATIVE_P(X) \
455 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
456 == RTX_COMMUTATIVE_RESULT)
458 /* 1 if X is a relational operator. */
460 #define COMPARISON_P(X) \
461 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
463 /* 1 if X is a constant value that is an integer. */
465 #define CONSTANT_P(X) \
466 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
468 /* 1 if X can be used to represent an object. */
469 #define OBJECT_P(X) \
470 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
472 /* General accessor macros for accessing the fields of an rtx. */
474 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
475 /* The bit with a star outside the statement expr and an & inside is
476 so that N can be evaluated only once. */
477 #define RTL_CHECK1(RTX, N, C1) __extension__ \
478 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
479 const enum rtx_code _code = GET_CODE (_rtx); \
480 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
481 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
483 if (GET_RTX_FORMAT(_code)[_n] != C1) \
484 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
486 &_rtx->u.fld[_n]; }))
488 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
489 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
490 const enum rtx_code _code = GET_CODE (_rtx); \
491 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
492 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
494 if (GET_RTX_FORMAT(_code)[_n] != C1 \
495 && GET_RTX_FORMAT(_code)[_n] != C2) \
496 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
498 &_rtx->u.fld[_n]; }))
500 #define RTL_CHECKC1(RTX, N, C) __extension__ \
501 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
502 if (GET_CODE (_rtx) != (C)) \
503 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
505 &_rtx->u.fld[_n]; }))
507 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
508 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
509 const enum rtx_code _code = GET_CODE (_rtx); \
510 if (_code != (C1) && _code != (C2)) \
511 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
513 &_rtx->u.fld[_n]; }))
515 #define RTVEC_ELT(RTVEC, I) __extension__ \
516 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
517 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
518 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
520 &_rtvec->elem[_i]; }))
522 #define XWINT(RTX, N) __extension__ \
523 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
524 const enum rtx_code _code = GET_CODE (_rtx); \
525 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
526 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
528 if (GET_RTX_FORMAT(_code)[_n] != 'w') \
529 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
531 &_rtx->u.hwint[_n]; }))
533 #define XCWINT(RTX, N, C) __extension__ \
534 (*({ __typeof (RTX) const _rtx = (RTX); \
535 if (GET_CODE (_rtx) != (C)) \
536 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
538 &_rtx->u.hwint[N]; }))
540 #define XCMWINT(RTX, N, C, M) __extension__ \
541 (*({ __typeof (RTX) const _rtx = (RTX); \
542 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
543 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
544 __LINE__, __FUNCTION__); \
545 &_rtx->u.hwint[N]; }))
547 #define XCNMPRV(RTX, C, M) __extension__ \
548 ({ __typeof (RTX) const _rtx = (RTX); \
549 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
550 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
551 __LINE__, __FUNCTION__); \
554 #define XCNMPFV(RTX, C, M) __extension__ \
555 ({ __typeof (RTX) const _rtx = (RTX); \
556 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
557 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
558 __LINE__, __FUNCTION__); \
561 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
562 ({ __typeof (RTX) const _symbol = (RTX); \
563 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \
564 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
565 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
567 &_symbol->u.block_sym; })
569 extern void rtl_check_failed_bounds (const_rtx, int, const char *, int,
572 extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int,
575 extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *,
578 extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *,
581 extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code,
582 const char *, int, const char *)
584 extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, enum machine_mode,
585 bool, const char *, int, const char *)
587 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
589 extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int,
593 #else /* not ENABLE_RTL_CHECKING */
595 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
596 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
597 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
598 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
599 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
600 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
601 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
602 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
603 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
604 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
605 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
606 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
610 /* General accessor macros for accessing the flags of an rtx. */
612 /* Access an individual rtx flag, with no checking of any kind. */
613 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
615 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
616 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
617 ({ __typeof (RTX) const _rtx = (RTX); \
618 if (GET_CODE(_rtx) != C1) \
619 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
623 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
624 ({ __typeof (RTX) const _rtx = (RTX); \
625 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \
626 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
630 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
631 ({ __typeof (RTX) const _rtx = (RTX); \
632 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
633 && GET_CODE(_rtx) != C3) \
634 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
638 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
639 ({ __typeof (RTX) const _rtx = (RTX); \
640 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
641 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \
642 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
646 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
647 ({ __typeof (RTX) const _rtx = (RTX); \
648 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
649 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
650 && GET_CODE(_rtx) != C5) \
651 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
655 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
657 ({ __typeof (RTX) const _rtx = (RTX); \
658 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
659 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
660 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \
661 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
665 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
667 ({ __typeof (RTX) const _rtx = (RTX); \
668 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
669 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
670 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
671 && GET_CODE(_rtx) != C7) \
672 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
676 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \
678 ({ __typeof (RTX) const _rtx = (RTX); \
679 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
680 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
681 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
682 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \
683 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
687 extern void rtl_check_failed_flag (const char *, const_rtx, const char *,
692 #else /* not ENABLE_RTL_FLAG_CHECKING */
694 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
695 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
696 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
697 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
698 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
699 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
700 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
701 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX)
704 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
705 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
706 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
707 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
708 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
709 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
710 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
711 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
712 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
714 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
715 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
717 /* These are like XINT, etc. except that they expect a '0' field instead
718 of the normal type code. */
720 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
721 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
722 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
723 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
724 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
725 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
726 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
727 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
728 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
729 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
730 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
731 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
732 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
734 /* Access a '0' field with any type. */
735 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
737 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
738 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
739 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
740 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
741 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
742 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
743 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
744 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
745 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
746 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
748 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
749 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
751 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
753 /* ACCESS MACROS for particular fields of insns. */
755 /* Holds a unique number for each insn.
756 These are not necessarily sequentially increasing. */
757 #define INSN_UID(INSN) XINT (INSN, 0)
759 /* Chain insns together in sequence. */
760 #define PREV_INSN(INSN) XEXP (INSN, 1)
761 #define NEXT_INSN(INSN) XEXP (INSN, 2)
763 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3)
765 /* The body of an insn. */
766 #define PATTERN(INSN) XEXP (INSN, 4)
768 #define INSN_LOCATOR(INSN) XINT (INSN, 5)
769 /* LOCATION of an RTX if relevant. */
770 #define RTL_LOCATION(X) (INSN_P (X) ? \
771 locator_location (INSN_LOCATOR (X)) \
773 /* LOCATION of current INSN. */
774 #define CURR_INSN_LOCATION (locator_location (curr_insn_locator ()))
776 /* Code number of instruction, from when it was recognized.
777 -1 means this instruction has not been recognized yet. */
778 #define INSN_CODE(INSN) XINT (INSN, 6)
780 #define RTX_FRAME_RELATED_P(RTX) \
781 (RTL_FLAG_CHECK6("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
782 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
784 /* 1 if RTX is an insn that has been deleted. */
785 #define INSN_DELETED_P(RTX) \
786 (RTL_FLAG_CHECK7("INSN_DELETED_P", (RTX), DEBUG_INSN, INSN, \
787 CALL_INSN, JUMP_INSN, \
788 CODE_LABEL, BARRIER, NOTE)->volatil)
790 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
792 #define RTL_CONST_CALL_P(RTX) \
793 (RTL_FLAG_CHECK1("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
795 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
797 #define RTL_PURE_CALL_P(RTX) \
798 (RTL_FLAG_CHECK1("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
800 /* 1 if RTX is a call to a const or pure function. */
801 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
802 (RTL_CONST_CALL_P(RTX) || RTL_PURE_CALL_P(RTX))
804 /* 1 if RTX is a call to a looping const or pure function. Built from
805 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
806 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
807 (RTL_FLAG_CHECK1("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
809 /* 1 if RTX is a call_insn for a sibling call. */
810 #define SIBLING_CALL_P(RTX) \
811 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
813 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
814 #define INSN_ANNULLED_BRANCH_P(RTX) \
815 (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)
817 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
818 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
819 executed if the branch is taken. For annulled branches with this bit
820 clear, the insn should be executed only if the branch is not taken. */
821 #define INSN_FROM_TARGET_P(RTX) \
822 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)
824 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
825 See the comments for ADDR_DIFF_VEC in rtl.def. */
826 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
828 /* In a VALUE, the value cselib has assigned to RTX.
829 This is a "struct cselib_val_struct", see cselib.h. */
830 #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
832 /* Holds a list of notes on what this insn does to various REGs.
833 It is a chain of EXPR_LIST rtx's, where the second operand is the
834 chain pointer and the first operand is the REG being described.
835 The mode field of the EXPR_LIST contains not a real machine mode
836 but a value from enum reg_note. */
837 #define REG_NOTES(INSN) XEXP(INSN, 7)
839 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
841 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
845 #define DEF_REG_NOTE(NAME) NAME,
846 #include "reg-notes.def"
851 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
852 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
853 #define PUT_REG_NOTE_KIND(LINK, KIND) \
854 PUT_MODE (LINK, (enum machine_mode) (KIND))
856 /* Names for REG_NOTE's in EXPR_LIST insn's. */
858 extern const char * const reg_note_name[];
859 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
861 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
862 USE and CLOBBER expressions.
863 USE expressions list the registers filled with arguments that
864 are passed to the function.
865 CLOBBER expressions document the registers explicitly clobbered
867 Pseudo registers can not be mentioned in this list. */
868 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8)
870 /* The label-number of a code-label. The assembler label
871 is made from `L' and the label-number printed in decimal.
872 Label numbers are unique in a compilation. */
873 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6)
875 /* In a NOTE that is a line number, this is a string for the file name that the
876 line is in. We use the same field to record block numbers temporarily in
877 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
878 between ints and pointers if we use a different macro for the block number.)
882 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE)
883 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE)
884 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
885 #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE)
886 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
887 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
888 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE)
889 #define NOTE_CFI(INSN) XCCFI (INSN, 4, NOTE)
890 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 4, NOTE)
892 /* In a NOTE that is a line number, this is the line number.
893 Other kinds of NOTEs are identified by negative numbers here. */
894 #define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE)
896 /* Nonzero if INSN is a note marking the beginning of a basic block. */
897 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
898 (GET_CODE (INSN) == NOTE \
899 && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
901 /* Variable declaration and the location of a variable. */
902 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
903 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
905 /* Initialization status of the variable in the location. Status
906 can be unknown, uninitialized or initialized. See enumeration
908 #define PAT_VAR_LOCATION_STATUS(PAT) \
909 ((enum var_init_status) (XCINT ((PAT), 2, VAR_LOCATION)))
911 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
912 #define NOTE_VAR_LOCATION_DECL(NOTE) \
913 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
914 #define NOTE_VAR_LOCATION_LOC(NOTE) \
915 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
916 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
917 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
919 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
920 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
922 /* Accessors for a tree-expanded var location debug insn. */
923 #define INSN_VAR_LOCATION_DECL(INSN) \
924 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
925 #define INSN_VAR_LOCATION_LOC(INSN) \
926 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
927 #define INSN_VAR_LOCATION_STATUS(INSN) \
928 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
930 /* Expand to the RTL that denotes an unknown variable location in a
932 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
934 /* Determine whether X is such an unknown location. */
935 #define VAR_LOC_UNKNOWN_P(X) \
936 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
938 /* 1 if RTX is emitted after a call, but it should take effect before
940 #define NOTE_DURING_CALL_P(RTX) \
941 (RTL_FLAG_CHECK1("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
943 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
944 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
946 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
947 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
949 /* PARM_DECL DEBUG_PARAMETER_REF references. */
950 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
952 /* Codes that appear in the NOTE_KIND field for kinds of notes
953 that are not line numbers. These codes are all negative.
955 Notice that we do not try to use zero here for any of
956 the special note codes because sometimes the source line
957 actually can be zero! This happens (for example) when we
958 are generating code for the per-translation-unit constructor
959 and destructor routines for some C++ translation unit. */
963 #define DEF_INSN_NOTE(NAME) NAME,
964 #include "insn-notes.def"
970 /* Names for NOTE insn's other than line numbers. */
972 extern const char * const note_insn_name[NOTE_INSN_MAX];
973 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
974 (note_insn_name[(NOTE_CODE)])
976 /* The name of a label, in case it corresponds to an explicit label
977 in the input source code. */
978 #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL)
980 /* In jump.c, each label contains a count of the number
981 of LABEL_REFs that point at it, so unused labels can be deleted. */
982 #define LABEL_NUSES(RTX) XCINT (RTX, 5, CODE_LABEL)
984 /* Labels carry a two-bit field composed of the ->jump and ->call
985 bits. This field indicates whether the label is an alternate
986 entry point, and if so, what kind. */
989 LABEL_NORMAL = 0, /* ordinary label */
990 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */
991 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */
992 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */
995 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
997 /* Retrieve the kind of LABEL. */
998 #define LABEL_KIND(LABEL) __extension__ \
999 ({ __typeof (LABEL) const _label = (LABEL); \
1000 if (GET_CODE (_label) != CODE_LABEL) \
1001 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1003 (enum label_kind) ((_label->jump << 1) | _label->call); })
1005 /* Set the kind of LABEL. */
1006 #define SET_LABEL_KIND(LABEL, KIND) do { \
1007 __typeof (LABEL) const _label = (LABEL); \
1008 const unsigned int _kind = (KIND); \
1009 if (GET_CODE (_label) != CODE_LABEL) \
1010 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1012 _label->jump = ((_kind >> 1) & 1); \
1013 _label->call = (_kind & 1); \
1018 /* Retrieve the kind of LABEL. */
1019 #define LABEL_KIND(LABEL) \
1020 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1022 /* Set the kind of LABEL. */
1023 #define SET_LABEL_KIND(LABEL, KIND) do { \
1024 rtx const _label = (LABEL); \
1025 const unsigned int _kind = (KIND); \
1026 _label->jump = ((_kind >> 1) & 1); \
1027 _label->call = (_kind & 1); \
1030 #endif /* rtl flag checking */
1032 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1034 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1035 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1036 be decremented and possibly the label can be deleted. */
1037 #define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN)
1039 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1040 goes through all the LABEL_REFs that jump to that label. The chain
1041 eventually winds up at the CODE_LABEL: it is circular. */
1042 #define LABEL_REFS(LABEL) XCEXP (LABEL, 4, CODE_LABEL)
1044 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1045 be used on RHS. Use SET_REGNO to change the value. */
1046 #define REGNO(RTX) (rhs_regno(RTX))
1047 #define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
1048 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
1050 /* ORIGINAL_REGNO holds the number the register originally had; for a
1051 pseudo register turned into a hard reg this will hold the old pseudo
1053 #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)
1055 /* Force the REGNO macro to only be used on the lhs. */
1056 static inline unsigned int
1057 rhs_regno (const_rtx x)
1059 return XCUINT (x, 0, REG);
1063 /* 1 if RTX is a reg or parallel that is the current function's return
1065 #define REG_FUNCTION_VALUE_P(RTX) \
1066 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1068 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1069 #define REG_USERVAR_P(RTX) \
1070 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil)
1072 /* 1 if RTX is a reg that holds a pointer value. */
1073 #define REG_POINTER(RTX) \
1074 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related)
1076 /* 1 if RTX is a mem that holds a pointer value. */
1077 #define MEM_POINTER(RTX) \
1078 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related)
1080 /* 1 if the given register REG corresponds to a hard register. */
1081 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1083 /* 1 if the given register number REG_NO corresponds to a hard register. */
1084 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1086 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1087 #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)
1088 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1090 /* For a CONST_DOUBLE:
1091 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1092 low-order word and ..._HIGH the high-order.
1093 For a float, there is a REAL_VALUE_TYPE structure, and
1094 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1095 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1096 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1097 #define CONST_DOUBLE_REAL_VALUE(r) \
1098 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1100 #define CONST_FIXED_VALUE(r) \
1101 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1102 #define CONST_FIXED_VALUE_HIGH(r) \
1103 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high))
1104 #define CONST_FIXED_VALUE_LOW(r) \
1105 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low))
1107 /* For a CONST_VECTOR, return element #n. */
1108 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1110 /* For a CONST_VECTOR, return the number of elements in a vector. */
1111 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1113 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1114 SUBREG_BYTE extracts the byte-number. */
1116 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1117 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1120 /* Return the right cost to give to an operation
1121 to make the cost of the corresponding register-to-register instruction
1122 N times that of a fast register-to-register instruction. */
1123 #define COSTS_N_INSNS(N) ((N) * 4)
1125 /* Maximum cost of an rtl expression. This value has the special meaning
1126 not to use an rtx with this cost under any circumstances. */
1127 #define MAX_COST INT_MAX
1129 /* A structure to hold all available cost information about an rtl
1131 struct full_rtx_costs
1137 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1139 init_costs_to_max (struct full_rtx_costs *c)
1141 c->speed = MAX_COST;
1145 /* Initialize a full_rtx_costs structure C to zero cost. */
1147 init_costs_to_zero (struct full_rtx_costs *c)
1153 /* Compare two full_rtx_costs structures A and B, returning true
1154 if A < B when optimizing for speed. */
1156 costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b,
1160 return (a->speed < b->speed
1161 || (a->speed == b->speed && a->size < b->size));
1163 return (a->size < b->size
1164 || (a->size == b->size && a->speed < b->speed));
1167 /* Increase both members of the full_rtx_costs structure C by the
1170 costs_add_n_insns (struct full_rtx_costs *c, int n)
1172 c->speed += COSTS_N_INSNS (n);
1173 c->size += COSTS_N_INSNS (n);
1176 extern void init_rtlanal (void);
1177 extern int rtx_cost (rtx, enum rtx_code, bool);
1178 extern int address_cost (rtx, enum machine_mode, addr_space_t, bool);
1179 extern void get_full_rtx_cost (rtx, enum rtx_code, struct full_rtx_costs *);
1180 extern unsigned int subreg_lsb (const_rtx);
1181 extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode,
1183 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode,
1184 unsigned int, enum machine_mode);
1185 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode,
1186 unsigned int, enum machine_mode);
1187 extern unsigned int subreg_regno (const_rtx);
1188 extern int simplify_subreg_regno (unsigned int, enum machine_mode,
1189 unsigned int, enum machine_mode);
1190 extern unsigned int subreg_nregs (const_rtx);
1191 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx);
1192 extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, enum machine_mode);
1193 extern unsigned int num_sign_bit_copies (const_rtx, enum machine_mode);
1194 extern bool constant_pool_constant_p (rtx);
1195 extern bool truncated_to_mode (enum machine_mode, const_rtx);
1196 extern int low_bitmask_len (enum machine_mode, unsigned HOST_WIDE_INT);
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
1201 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
1204 When used as a LHS, is means that this extension must be done
1205 when assigning to SUBREG_REG. */
1207 #define SUBREG_PROMOTED_VAR_P(RTX) \
1208 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
1210 #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \
1212 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \
1214 _rtx->volatil = 1; \
1216 _rtx->volatil = 0; \
1217 _rtx->unchanging = (VAL); \
1221 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
1222 this gives the necessary extensions:
1225 -1 - pointer unsigned, which most often can be handled like unsigned
1226 extension, except for generating instructions where we need to
1227 emit special code (ptr_extend insns) on some architectures. */
1229 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
1230 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
1231 ? -1 : (int) (RTX)->unchanging)
1233 /* Access various components of an ASM_OPERANDS rtx. */
1235 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
1236 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
1237 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
1238 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
1239 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
1240 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
1241 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
1242 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
1243 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
1244 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
1245 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
1246 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
1247 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
1248 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
1249 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
1250 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
1251 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
1252 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
1254 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
1255 #define MEM_READONLY_P(RTX) \
1256 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging)
1258 /* 1 if RTX is a mem and we should keep the alias set for this mem
1259 unchanged when we access a component. Set to 1, or example, when we
1260 are already in a non-addressable component of an aggregate. */
1261 #define MEM_KEEP_ALIAS_SET_P(RTX) \
1262 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
1264 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
1265 #define MEM_VOLATILE_P(RTX) \
1266 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
1267 ASM_INPUT)->volatil)
1269 /* 1 if RTX is a mem that refers to an aggregate, either to the
1270 aggregate itself or to a field of the aggregate. If zero, RTX may
1271 or may not be such a reference. */
1272 #define MEM_IN_STRUCT_P(RTX) \
1273 (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct)
1275 /* 1 if RTX is a MEM that refers to a scalar. If zero, RTX may or may
1276 not refer to a scalar. */
1277 #define MEM_SCALAR_P(RTX) \
1278 (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val)
1280 /* 1 if RTX is a mem that cannot trap. */
1281 #define MEM_NOTRAP_P(RTX) \
1282 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call)
1284 /* The memory attribute block. We provide access macros for each value
1285 in the block and provide defaults if none specified. */
1286 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
1288 /* The register attribute block. We provide access macros for each value
1289 in the block and provide defaults if none specified. */
1290 #define REG_ATTRS(RTX) X0REGATTR (RTX, 2)
1292 #ifndef GENERATOR_FILE
1293 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
1294 set, and may alias anything. Otherwise, the MEM can only alias
1295 MEMs in a conflicting alias set. This value is set in a
1296 language-dependent manner in the front-end, and should not be
1297 altered in the back-end. These set numbers are tested with
1298 alias_sets_conflict_p. */
1299 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
1301 /* For a MEM rtx, the decl it is known to refer to, if it is known to
1302 refer to part of a DECL. It may also be a COMPONENT_REF. */
1303 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
1305 /* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a
1306 RTX that is always a CONST_INT. */
1307 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
1309 /* For a MEM rtx, the address space. */
1310 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
1312 /* For a MEM rtx, true if its MEM_SIZE is known. */
1313 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size != NULL_RTX)
1315 /* For a MEM rtx, the size in bytes of the MEM. */
1316 #define MEM_SIZE(RTX) INTVAL (get_mem_attrs (RTX)->size)
1318 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
1319 mode as a default when STRICT_ALIGNMENT, but not if not. */
1320 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
1322 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
1325 /* For a REG rtx, the decl it is known to refer to, if it is known to
1326 refer to part of a DECL. */
1327 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
1329 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
1331 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
1333 /* Copy the attributes that apply to memory locations from RHS to LHS. */
1334 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
1335 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
1336 MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \
1337 MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \
1338 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
1339 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
1340 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
1341 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
1342 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
1344 /* 1 if RTX is a label_ref for a nonlocal label. */
1345 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
1346 REG_LABEL_TARGET note. */
1347 #define LABEL_REF_NONLOCAL_P(RTX) \
1348 (RTL_FLAG_CHECK1("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
1350 /* 1 if RTX is a code_label that should always be considered to be needed. */
1351 #define LABEL_PRESERVE_P(RTX) \
1352 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
1354 /* During sched, 1 if RTX is an insn that must be scheduled together
1355 with the preceding insn. */
1356 #define SCHED_GROUP_P(RTX) \
1357 (RTL_FLAG_CHECK4("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
1358 JUMP_INSN, CALL_INSN \
1361 /* For a SET rtx, SET_DEST is the place that is set
1362 and SET_SRC is the value it is set to. */
1363 #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
1364 #define SET_SRC(RTX) XCEXP(RTX, 1, SET)
1365 #define SET_IS_RETURN_P(RTX) \
1366 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump)
1368 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
1369 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
1370 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
1372 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
1373 conditionally executing the code on, COND_EXEC_CODE is the code
1374 to execute if the condition is true. */
1375 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
1376 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
1378 /* 1 if RTX is a symbol_ref that addresses this function's rtl
1380 #define CONSTANT_POOL_ADDRESS_P(RTX) \
1381 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
1383 /* 1 if RTX is a symbol_ref that addresses a value in the file's
1384 tree constant pool. This information is private to varasm.c. */
1385 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
1386 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \
1387 (RTX), SYMBOL_REF)->frame_related)
1389 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
1390 #define SYMBOL_REF_FLAG(RTX) \
1391 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
1393 /* 1 if RTX is a symbol_ref that has been the library function in
1394 emit_library_call. */
1395 #define SYMBOL_REF_USED(RTX) \
1396 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
1398 /* 1 if RTX is a symbol_ref for a weak symbol. */
1399 #define SYMBOL_REF_WEAK(RTX) \
1400 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
1402 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
1403 SYMBOL_REF_CONSTANT. */
1404 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2)
1406 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
1408 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
1409 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL))
1411 /* The tree (decl or constant) associated with the symbol, or null. */
1412 #define SYMBOL_REF_DECL(RTX) \
1413 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2))
1415 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
1416 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
1417 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C))
1419 /* The rtx constant pool entry for a symbol, or null. */
1420 #define SYMBOL_REF_CONSTANT(RTX) \
1421 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL)
1423 /* A set of flags on a symbol_ref that are, in some respects, redundant with
1424 information derivable from the tree decl associated with this symbol.
1425 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
1426 decl. In some cases this is a bug. But beyond that, it's nice to cache
1427 this information to avoid recomputing it. Finally, this allows space for
1428 the target to store more than one bit of information, as with
1430 #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1)
1432 /* These flags are common enough to be defined for all targets. They
1433 are computed by the default version of targetm.encode_section_info. */
1435 /* Set if this symbol is a function. */
1436 #define SYMBOL_FLAG_FUNCTION (1 << 0)
1437 #define SYMBOL_REF_FUNCTION_P(RTX) \
1438 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
1439 /* Set if targetm.binds_local_p is true. */
1440 #define SYMBOL_FLAG_LOCAL (1 << 1)
1441 #define SYMBOL_REF_LOCAL_P(RTX) \
1442 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
1443 /* Set if targetm.in_small_data_p is true. */
1444 #define SYMBOL_FLAG_SMALL (1 << 2)
1445 #define SYMBOL_REF_SMALL_P(RTX) \
1446 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
1447 /* The three-bit field at [5:3] is true for TLS variables; use
1448 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
1449 #define SYMBOL_FLAG_TLS_SHIFT 3
1450 #define SYMBOL_REF_TLS_MODEL(RTX) \
1451 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
1452 /* Set if this symbol is not defined in this translation unit. */
1453 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
1454 #define SYMBOL_REF_EXTERNAL_P(RTX) \
1455 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
1456 /* Set if this symbol has a block_symbol structure associated with it. */
1457 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
1458 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
1459 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
1460 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
1461 SYMBOL_REF_HAS_BLOCK_INFO_P. */
1462 #define SYMBOL_FLAG_ANCHOR (1 << 8)
1463 #define SYMBOL_REF_ANCHOR_P(RTX) \
1464 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
1466 /* Subsequent bits are available for the target to use. */
1467 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
1468 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
1470 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
1471 structure to which the symbol belongs, or NULL if it has not been
1472 assigned a block. */
1473 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
1475 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
1476 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
1477 RTX has not yet been assigned to a block, or it has not been given an
1478 offset within that block. */
1479 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
1481 /* True if RTX is flagged to be a scheduling barrier. */
1482 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
1483 (RTL_FLAG_CHECK1("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
1485 /* Indicate whether the machine has any sort of auto increment addressing.
1486 If not, we can avoid checking for REG_INC notes. */
1488 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
1489 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
1490 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \
1491 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
1492 #define AUTO_INC_DEC
1495 /* Define a macro to look for REG_INC notes,
1496 but save time on machines where they never exist. */
1499 #define FIND_REG_INC_NOTE(INSN, REG) \
1500 ((REG) != NULL_RTX && REG_P ((REG)) \
1501 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
1502 : find_reg_note ((INSN), REG_INC, (REG)))
1504 #define FIND_REG_INC_NOTE(INSN, REG) 0
1507 #ifndef HAVE_PRE_INCREMENT
1508 #define HAVE_PRE_INCREMENT 0
1511 #ifndef HAVE_PRE_DECREMENT
1512 #define HAVE_PRE_DECREMENT 0
1515 #ifndef HAVE_POST_INCREMENT
1516 #define HAVE_POST_INCREMENT 0
1519 #ifndef HAVE_POST_DECREMENT
1520 #define HAVE_POST_DECREMENT 0
1523 #ifndef HAVE_POST_MODIFY_DISP
1524 #define HAVE_POST_MODIFY_DISP 0
1527 #ifndef HAVE_POST_MODIFY_REG
1528 #define HAVE_POST_MODIFY_REG 0
1531 #ifndef HAVE_PRE_MODIFY_DISP
1532 #define HAVE_PRE_MODIFY_DISP 0
1535 #ifndef HAVE_PRE_MODIFY_REG
1536 #define HAVE_PRE_MODIFY_REG 0
1540 /* Some architectures do not have complete pre/post increment/decrement
1541 instruction sets, or only move some modes efficiently. These macros
1542 allow us to tune autoincrement generation. */
1544 #ifndef USE_LOAD_POST_INCREMENT
1545 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1548 #ifndef USE_LOAD_POST_DECREMENT
1549 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1552 #ifndef USE_LOAD_PRE_INCREMENT
1553 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1556 #ifndef USE_LOAD_PRE_DECREMENT
1557 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1560 #ifndef USE_STORE_POST_INCREMENT
1561 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1564 #ifndef USE_STORE_POST_DECREMENT
1565 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1568 #ifndef USE_STORE_PRE_INCREMENT
1569 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1572 #ifndef USE_STORE_PRE_DECREMENT
1573 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1576 /* Nonzero when we are generating CONCATs. */
1577 extern int generating_concat_p;
1579 /* Nonzero when we are expanding trees to RTL. */
1580 extern int currently_expanding_to_rtl;
1582 /* Generally useful functions. */
1585 extern int ceil_log2 (unsigned HOST_WIDE_INT);
1588 extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode);
1589 extern rtx plus_constant (rtx, HOST_WIDE_INT);
1592 extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL);
1593 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
1595 extern rtvec rtvec_alloc (int);
1596 extern rtvec shallow_copy_rtvec (rtvec);
1597 extern bool shared_const_p (const_rtx);
1598 extern rtx copy_rtx (rtx);
1599 extern void dump_rtx_statistics (void);
1602 extern rtx copy_rtx_if_shared (rtx);
1605 extern unsigned int rtx_size (const_rtx);
1606 extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL);
1607 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
1608 extern int rtx_equal_p (const_rtx, const_rtx);
1609 extern hashval_t iterative_hash_rtx (const_rtx, hashval_t);
1612 extern rtvec gen_rtvec_v (int, rtx *);
1613 extern rtx gen_reg_rtx (enum machine_mode);
1614 extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int);
1615 extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int);
1616 extern rtx gen_reg_rtx_and_attrs (rtx);
1617 extern rtx gen_label_rtx (void);
1618 extern rtx gen_lowpart_common (enum machine_mode, rtx);
1621 extern rtx gen_lowpart_if_possible (enum machine_mode, rtx);
1624 extern rtx gen_highpart (enum machine_mode, rtx);
1625 extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx);
1626 extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode);
1629 extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode);
1630 extern bool paradoxical_subreg_p (const_rtx);
1631 extern int subreg_lowpart_p (const_rtx);
1632 extern unsigned int subreg_lowpart_offset (enum machine_mode,
1634 extern unsigned int subreg_highpart_offset (enum machine_mode,
1636 extern int byte_lowpart_offset (enum machine_mode, enum machine_mode);
1637 extern rtx make_safe_from (rtx, rtx);
1638 extern rtx convert_memory_address_addr_space (enum machine_mode, rtx,
1640 #define convert_memory_address(to_mode,x) \
1641 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
1642 extern const char *get_insn_name (int);
1643 extern rtx get_last_insn_anywhere (void);
1644 extern rtx get_first_nonnote_insn (void);
1645 extern rtx get_last_nonnote_insn (void);
1646 extern void start_sequence (void);
1647 extern void push_to_sequence (rtx);
1648 extern void push_to_sequence2 (rtx, rtx);
1649 extern void end_sequence (void);
1650 extern double_int rtx_to_double_int (const_rtx);
1651 extern rtx immed_double_int_const (double_int, enum machine_mode);
1652 extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
1657 extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode);
1660 extern rtx force_const_mem (enum machine_mode, rtx);
1665 extern rtx get_pool_constant (rtx);
1666 extern rtx get_pool_constant_mark (rtx, bool *);
1667 extern enum machine_mode get_pool_mode (const_rtx);
1668 extern rtx simplify_subtraction (rtx);
1669 extern void decide_function_section (tree);
1672 extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int);
1673 #define ASLK_REDUCE_ALIGN 1
1674 #define ASLK_RECORD_PAD 2
1675 extern rtx assign_stack_local_1 (enum machine_mode, HOST_WIDE_INT, int, int);
1676 extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int);
1677 extern rtx assign_stack_temp_for_type (enum machine_mode,
1678 HOST_WIDE_INT, int, tree);
1679 extern rtx assign_temp (tree, int, int, int);
1682 extern rtx emit_insn_before (rtx, rtx);
1683 extern rtx emit_insn_before_noloc (rtx, rtx, struct basic_block_def *);
1684 extern rtx emit_insn_before_setloc (rtx, rtx, int);
1685 extern rtx emit_jump_insn_before (rtx, rtx);
1686 extern rtx emit_jump_insn_before_noloc (rtx, rtx);
1687 extern rtx emit_jump_insn_before_setloc (rtx, rtx, int);
1688 extern rtx emit_call_insn_before (rtx, rtx);
1689 extern rtx emit_call_insn_before_noloc (rtx, rtx);
1690 extern rtx emit_call_insn_before_setloc (rtx, rtx, int);
1691 extern rtx emit_debug_insn_before (rtx, rtx);
1692 extern rtx emit_debug_insn_before_noloc (rtx, rtx);
1693 extern rtx emit_debug_insn_before_setloc (rtx, rtx, int);
1694 extern rtx emit_barrier_before (rtx);
1695 extern rtx emit_label_before (rtx, rtx);
1696 extern rtx emit_note_before (enum insn_note, rtx);
1697 extern rtx emit_insn_after (rtx, rtx);
1698 extern rtx emit_insn_after_noloc (rtx, rtx, struct basic_block_def *);
1699 extern rtx emit_insn_after_setloc (rtx, rtx, int);
1700 extern rtx emit_jump_insn_after (rtx, rtx);
1701 extern rtx emit_jump_insn_after_noloc (rtx, rtx);
1702 extern rtx emit_jump_insn_after_setloc (rtx, rtx, int);
1703 extern rtx emit_call_insn_after (rtx, rtx);
1704 extern rtx emit_call_insn_after_noloc (rtx, rtx);
1705 extern rtx emit_call_insn_after_setloc (rtx, rtx, int);
1706 extern rtx emit_debug_insn_after (rtx, rtx);
1707 extern rtx emit_debug_insn_after_noloc (rtx, rtx);
1708 extern rtx emit_debug_insn_after_setloc (rtx, rtx, int);
1709 extern rtx emit_barrier_after (rtx);
1710 extern rtx emit_label_after (rtx, rtx);
1711 extern rtx emit_note_after (enum insn_note, rtx);
1712 extern rtx emit_insn (rtx);
1713 extern rtx emit_debug_insn (rtx);
1714 extern rtx emit_jump_insn (rtx);
1715 extern rtx emit_call_insn (rtx);
1716 extern rtx emit_label (rtx);
1717 extern rtx emit_barrier (void);
1718 extern rtx emit_note (enum insn_note);
1719 extern rtx emit_note_copy (rtx);
1720 extern rtx gen_clobber (rtx);
1721 extern rtx emit_clobber (rtx);
1722 extern rtx gen_use (rtx);
1723 extern rtx emit_use (rtx);
1724 extern rtx make_insn_raw (rtx);
1725 extern rtx make_debug_insn_raw (rtx);
1726 extern rtx make_jump_insn_raw (rtx);
1727 extern void add_function_usage_to (rtx, rtx);
1728 extern rtx last_call_insn (void);
1729 extern rtx previous_insn (rtx);
1730 extern rtx next_insn (rtx);
1731 extern rtx prev_nonnote_insn (rtx);
1732 extern rtx prev_nonnote_insn_bb (rtx);
1733 extern rtx next_nonnote_insn (rtx);
1734 extern rtx next_nonnote_insn_bb (rtx);
1735 extern rtx prev_nondebug_insn (rtx);
1736 extern rtx next_nondebug_insn (rtx);
1737 extern rtx prev_nonnote_nondebug_insn (rtx);
1738 extern rtx next_nonnote_nondebug_insn (rtx);
1739 extern rtx prev_real_insn (rtx);
1740 extern rtx next_real_insn (rtx);
1741 extern rtx prev_active_insn (rtx);
1742 extern rtx next_active_insn (rtx);
1743 extern int active_insn_p (const_rtx);
1744 extern rtx prev_label (rtx);
1745 extern rtx next_label (rtx);
1746 extern rtx skip_consecutive_labels (rtx);
1747 extern rtx next_cc0_user (rtx);
1748 extern rtx prev_cc0_setter (rtx);
1750 /* In cfglayout.c */
1751 extern int insn_line (const_rtx);
1752 extern const char * insn_file (const_rtx);
1753 extern location_t locator_location (int);
1754 extern int locator_line (int);
1755 extern const char * locator_file (int);
1756 extern bool locator_eq (int, int);
1757 extern int prologue_locator, epilogue_locator;
1760 extern enum rtx_code reverse_condition (enum rtx_code);
1761 extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code);
1762 extern enum rtx_code swap_condition (enum rtx_code);
1763 extern enum rtx_code unsigned_condition (enum rtx_code);
1764 extern enum rtx_code signed_condition (enum rtx_code);
1765 extern void mark_jump_label (rtx, rtx, int);
1766 extern unsigned int cleanup_barriers (void);
1769 extern rtx delete_related_insns (rtx);
1772 extern rtx *find_constant_term_loc (rtx *);
1775 extern rtx try_split (rtx, rtx, int);
1776 extern int split_branch_probability;
1778 /* In unknown file */
1779 extern rtx split_insns (rtx, rtx);
1781 /* In simplify-rtx.c */
1782 extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode,
1783 rtx, enum machine_mode);
1784 extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx,
1786 extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode,
1788 extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx,
1790 extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode,
1791 enum machine_mode, rtx, rtx, rtx);
1792 extern rtx simplify_const_relational_operation (enum rtx_code,
1793 enum machine_mode, rtx, rtx);
1794 extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode,
1795 enum machine_mode, rtx, rtx);
1796 extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx);
1797 extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx,
1799 extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode,
1800 enum machine_mode, rtx, rtx, rtx);
1801 extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode,
1802 enum machine_mode, rtx, rtx);
1803 extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode,
1805 extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode,
1807 extern rtx simplify_replace_fn_rtx (rtx, const_rtx,
1808 rtx (*fn) (rtx, const_rtx, void *), void *);
1809 extern rtx simplify_replace_rtx (rtx, const_rtx, rtx);
1810 extern rtx simplify_rtx (const_rtx);
1811 extern rtx avoid_constant_pool_reference (rtx);
1812 extern rtx delegitimize_mem_from_attrs (rtx);
1813 extern bool mode_signbit_p (enum machine_mode, const_rtx);
1814 extern bool val_signbit_p (enum machine_mode, unsigned HOST_WIDE_INT);
1815 extern bool val_signbit_known_set_p (enum machine_mode,
1816 unsigned HOST_WIDE_INT);
1817 extern bool val_signbit_known_clear_p (enum machine_mode,
1818 unsigned HOST_WIDE_INT);
1821 extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
1825 extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
1826 extern void set_insn_deleted (rtx);
1828 /* Functions in rtlanal.c */
1830 /* Single set is implemented as macro for performance reasons. */
1831 #define single_set(I) (INSN_P (I) \
1832 ? (GET_CODE (PATTERN (I)) == SET \
1833 ? PATTERN (I) : single_set_1 (I)) \
1835 #define single_set_1(I) single_set_2 (I, PATTERN (I))
1837 /* Structure used for passing data to REPLACE_LABEL. */
1838 typedef struct replace_label_data
1842 bool update_label_nuses;
1843 } replace_label_data;
1845 extern int rtx_addr_can_trap_p (const_rtx);
1846 extern bool nonzero_address_p (const_rtx);
1847 extern int rtx_unstable_p (const_rtx);
1848 extern bool rtx_varies_p (const_rtx, bool);
1849 extern bool rtx_addr_varies_p (const_rtx, bool);
1850 extern HOST_WIDE_INT get_integer_term (const_rtx);
1851 extern rtx get_related_value (const_rtx);
1852 extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT);
1853 extern void split_const (rtx, rtx *, rtx *);
1854 extern int reg_mentioned_p (const_rtx, const_rtx);
1855 extern int count_occurrences (const_rtx, const_rtx, int);
1856 extern int reg_referenced_p (const_rtx, const_rtx);
1857 extern int reg_used_between_p (const_rtx, const_rtx, const_rtx);
1858 extern int reg_set_between_p (const_rtx, const_rtx, const_rtx);
1859 extern int commutative_operand_precedence (rtx);
1860 extern bool swap_commutative_operands_p (rtx, rtx);
1861 extern int modified_between_p (const_rtx, const_rtx, const_rtx);
1862 extern int no_labels_between_p (const_rtx, const_rtx);
1863 extern int modified_in_p (const_rtx, const_rtx);
1864 extern int reg_set_p (const_rtx, const_rtx);
1865 extern rtx single_set_2 (const_rtx, const_rtx);
1866 extern int multiple_sets (const_rtx);
1867 extern int set_noop_p (const_rtx);
1868 extern int noop_move_p (const_rtx);
1869 extern rtx find_last_value (rtx, rtx *, rtx, int);
1870 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *);
1871 extern int reg_overlap_mentioned_p (const_rtx, const_rtx);
1872 extern const_rtx set_of (const_rtx, const_rtx);
1873 extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *);
1874 extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
1875 extern int dead_or_set_p (const_rtx, const_rtx);
1876 extern int dead_or_set_regno_p (const_rtx, unsigned int);
1877 extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx);
1878 extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int);
1879 extern rtx find_reg_equal_equiv_note (const_rtx);
1880 extern rtx find_constant_src (const_rtx);
1881 extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx);
1882 extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int);
1883 extern rtx alloc_reg_note (enum reg_note, rtx, rtx);
1884 extern void add_reg_note (rtx, enum reg_note, rtx);
1885 extern void remove_note (rtx, const_rtx);
1886 extern void remove_reg_equal_equiv_notes (rtx);
1887 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
1888 extern int side_effects_p (const_rtx);
1889 extern int volatile_refs_p (const_rtx);
1890 extern int volatile_insn_p (const_rtx);
1891 extern int may_trap_p_1 (const_rtx, unsigned);
1892 extern int may_trap_p (const_rtx);
1893 extern int may_trap_or_fault_p (const_rtx);
1894 extern bool can_throw_internal (const_rtx);
1895 extern bool can_throw_external (const_rtx);
1896 extern bool insn_could_throw_p (const_rtx);
1897 extern bool insn_nothrow_p (const_rtx);
1898 extern bool can_nonlocal_goto (const_rtx);
1899 extern void copy_reg_eh_region_note_forward (rtx, rtx, rtx);
1900 extern void copy_reg_eh_region_note_backward(rtx, rtx, rtx);
1901 extern int inequality_comparisons_p (const_rtx);
1902 extern rtx replace_rtx (rtx, rtx, rtx);
1903 extern int replace_label (rtx *, void *);
1904 extern int rtx_referenced_p (rtx, rtx);
1905 extern bool tablejump_p (const_rtx, rtx *, rtx *);
1906 extern int computed_jump_p (const_rtx);
1908 typedef int (*rtx_function) (rtx *, void *);
1909 extern int for_each_rtx (rtx *, rtx_function, void *);
1911 /* Callback for for_each_inc_dec, to process the autoinc operation OP
1912 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
1913 NULL. The callback is passed the same opaque ARG passed to
1914 for_each_inc_dec. Return zero to continue looking for other
1915 autoinc operations, -1 to skip OP's operands, and any other value
1916 to interrupt the traversal and return that value to the caller of
1917 for_each_inc_dec. */
1918 typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src,
1919 rtx srcoff, void *arg);
1920 extern int for_each_inc_dec (rtx *, for_each_inc_dec_fn, void *arg);
1922 typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *,
1924 extern int rtx_equal_p_cb (const_rtx, const_rtx,
1925 rtx_equal_p_callback_function);
1927 typedef int (*hash_rtx_callback_function) (const_rtx, enum machine_mode, rtx *,
1928 enum machine_mode *);
1929 extern unsigned hash_rtx_cb (const_rtx, enum machine_mode, int *, int *,
1930 bool, hash_rtx_callback_function);
1932 extern rtx regno_use_in (unsigned int, rtx);
1933 extern int auto_inc_p (const_rtx);
1934 extern int in_expr_list_p (const_rtx, const_rtx);
1935 extern void remove_node_from_expr_list (const_rtx, rtx *);
1936 extern int loc_mentioned_in_p (rtx *, const_rtx);
1937 extern rtx find_first_parameter_load (rtx, rtx);
1938 extern bool keep_with_call_p (const_rtx);
1939 extern bool label_is_jump_target_p (const_rtx, const_rtx);
1940 extern int insn_rtx_cost (rtx, bool);
1942 /* Given an insn and condition, return a canonical description of
1943 the test being made. */
1944 extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int);
1946 /* Given a JUMP_INSN, return a canonical description of the test
1948 extern rtx get_condition (rtx, rtx *, int, int);
1950 /* Information about a subreg of a hard register. */
1953 /* Offset of first hard register involved in the subreg. */
1955 /* Number of hard registers involved in the subreg. */
1957 /* Whether this subreg can be represented as a hard reg with the new
1959 bool representable_p;
1962 extern void subreg_get_info (unsigned int, enum machine_mode,
1963 unsigned int, enum machine_mode,
1964 struct subreg_info *);
1968 extern void free_EXPR_LIST_list (rtx *);
1969 extern void free_INSN_LIST_list (rtx *);
1970 extern void free_EXPR_LIST_node (rtx);
1971 extern void free_INSN_LIST_node (rtx);
1972 extern rtx alloc_INSN_LIST (rtx, rtx);
1973 extern rtx alloc_EXPR_LIST (int, rtx, rtx);
1974 extern void remove_free_INSN_LIST_elem (rtx, rtx *);
1975 extern rtx remove_list_elem (rtx, rtx *);
1976 extern rtx remove_free_INSN_LIST_node (rtx *);
1977 extern rtx remove_free_EXPR_LIST_node (rtx *);
1982 /* Initialize may_move_cost and friends for mode M. */
1983 extern void init_move_cost (enum machine_mode);
1984 /* Resize reg info. */
1985 extern bool resize_reg_info (void);
1986 /* Free up register info memory. */
1987 extern void free_reg_info (void);
1988 extern void init_subregs_of_mode (void);
1989 extern void finish_subregs_of_mode (void);
1992 extern rtx extract_asm_operands (rtx);
1993 extern int asm_noperands (const_rtx);
1994 extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
1995 enum machine_mode *, location_t *);
1997 extern enum reg_class reg_preferred_class (int);
1998 extern enum reg_class reg_alternate_class (int);
1999 extern enum reg_class reg_allocno_class (int);
2000 extern void setup_reg_classes (int, enum reg_class, enum reg_class,
2003 extern void split_all_insns (void);
2004 extern unsigned int split_all_insns_noflow (void);
2006 #define MAX_SAVED_CONST_INT 64
2007 extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
2009 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
2010 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
2011 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
2012 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
2013 extern GTY(()) rtx const_true_rtx;
2015 extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE];
2017 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
2018 same as VOIDmode. */
2020 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
2022 /* Likewise, for the constants 1 and 2. */
2024 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
2025 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
2027 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
2028 is used to represent the frame pointer. This is because the
2029 hard frame pointer and the automatic variables are separated by an amount
2030 that cannot be determined until after register allocation. We can assume
2031 that in this case ELIMINABLE_REGS will be defined, one action of which
2032 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
2033 #ifndef HARD_FRAME_POINTER_REGNUM
2034 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
2037 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
2038 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
2039 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
2042 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
2043 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
2044 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
2047 /* Index labels for global_rtl. */
2048 enum global_rtl_index
2055 /* For register elimination to work properly these hard_frame_pointer_rtx,
2056 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
2057 the same register. */
2058 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
2059 GR_ARG_POINTER = GR_FRAME_POINTER,
2061 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
2062 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER,
2064 GR_HARD_FRAME_POINTER,
2066 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
2067 #if HARD_FRAME_POINTER_IS_ARG_POINTER
2068 GR_ARG_POINTER = GR_HARD_FRAME_POINTER,
2073 GR_VIRTUAL_INCOMING_ARGS,
2074 GR_VIRTUAL_STACK_ARGS,
2075 GR_VIRTUAL_STACK_DYNAMIC,
2076 GR_VIRTUAL_OUTGOING_ARGS,
2078 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY,
2083 /* Target-dependent globals. */
2084 struct GTY(()) target_rtl {
2085 /* All references to the hard registers in global_rtl_index go through
2086 these unique rtl objects. On machines where the frame-pointer and
2087 arg-pointer are the same register, they use the same unique object.
2089 After register allocation, other rtl objects which used to be pseudo-regs
2090 may be clobbered to refer to the frame-pointer register.
2091 But references that were originally to the frame-pointer can be
2092 distinguished from the others because they contain frame_pointer_rtx.
2094 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
2095 tricky: until register elimination has taken place hard_frame_pointer_rtx
2096 should be used if it is being set, and frame_pointer_rtx otherwise. After
2097 register elimination hard_frame_pointer_rtx should always be used.
2098 On machines where the two registers are same (most) then these are the
2100 rtx x_global_rtl[GR_MAX];
2102 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
2103 rtx x_pic_offset_table_rtx;
2105 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
2106 This is used to implement __builtin_return_address for some machines;
2107 see for instance the MIPS port. */
2108 rtx x_return_address_pointer_rtx;
2110 /* Commonly used RTL for hard registers. These objects are not
2111 necessarily unique, so we allocate them separately from global_rtl.
2112 They are initialized once per compilation unit, then copied into
2113 regno_reg_rtx at the beginning of each function. */
2114 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER];
2116 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
2117 rtx x_top_of_stack[MAX_MACHINE_MODE];
2119 /* Static hunks of RTL used by the aliasing code; these are treated
2120 as persistent to avoid unnecessary RTL allocations. */
2121 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER];
2123 /* The default memory attributes for each mode. */
2124 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE];
2127 extern GTY(()) struct target_rtl default_target_rtl;
2128 #if SWITCHABLE_TARGET
2129 extern struct target_rtl *this_target_rtl;
2131 #define this_target_rtl (&default_target_rtl)
2134 #define global_rtl \
2135 (this_target_rtl->x_global_rtl)
2136 #define pic_offset_table_rtx \
2137 (this_target_rtl->x_pic_offset_table_rtx)
2138 #define return_address_pointer_rtx \
2139 (this_target_rtl->x_return_address_pointer_rtx)
2140 #define top_of_stack \
2141 (this_target_rtl->x_top_of_stack)
2142 #define mode_mem_attrs \
2143 (this_target_rtl->x_mode_mem_attrs)
2145 /* Standard pieces of rtx, to be substituted directly into things. */
2146 #define pc_rtx (global_rtl[GR_PC])
2147 #define ret_rtx (global_rtl[GR_RETURN])
2148 #define cc0_rtx (global_rtl[GR_CC0])
2150 /* All references to certain hard regs, except those created
2151 by allocating pseudo regs into them (when that's possible),
2152 go through these unique rtx objects. */
2153 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
2154 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
2155 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
2156 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
2158 #ifndef GENERATOR_FILE
2159 /* Return the attributes of a MEM rtx. */
2160 static inline struct mem_attrs *
2161 get_mem_attrs (const_rtx x)
2163 struct mem_attrs *attrs;
2165 attrs = MEM_ATTRS (x);
2167 attrs = mode_mem_attrs[(int) GET_MODE (x)];
2172 /* Include the RTL generation functions. */
2174 #ifndef GENERATOR_FILE
2176 #undef gen_rtx_ASM_INPUT
2177 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
2178 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
2179 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
2180 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
2183 /* There are some RTL codes that require special attention; the
2184 generation functions included above do the raw handling. If you
2185 add to this list, modify special_rtx in gengenrtl.c as well. */
2187 extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT);
2188 extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec);
2189 extern rtx gen_raw_REG (enum machine_mode, int);
2190 extern rtx gen_rtx_REG (enum machine_mode, unsigned);
2191 extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int);
2192 extern rtx gen_rtx_MEM (enum machine_mode, rtx);
2194 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
2196 /* Virtual registers are used during RTL generation to refer to locations into
2197 the stack frame when the actual location isn't known until RTL generation
2198 is complete. The routine instantiate_virtual_regs replaces these with
2199 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
2202 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
2204 /* This points to the first word of the incoming arguments passed on the stack,
2205 either by the caller or by the callee when pretending it was passed by the
2208 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
2210 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
2212 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
2213 variable on the stack. Otherwise, it points to the first variable on
2216 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
2218 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
2220 /* This points to the location of dynamically-allocated memory on the stack
2221 immediately after the stack pointer has been adjusted by the amount
2224 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
2226 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
2228 /* This points to the location in the stack at which outgoing arguments should
2229 be written when the stack is pre-pushed (arguments pushed using push
2230 insns always use sp). */
2232 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
2234 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
2236 /* This points to the Canonical Frame Address of the function. This
2237 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
2238 but is calculated relative to the arg pointer for simplicity; the
2239 frame pointer nor stack pointer are necessarily fixed relative to
2240 the CFA until after reload. */
2242 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
2244 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
2246 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
2248 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
2251 #define virtual_preferred_stack_boundary_rtx \
2252 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
2254 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
2255 ((FIRST_VIRTUAL_REGISTER) + 5)
2257 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
2259 /* Nonzero if REGNUM is a pointer into the stack frame. */
2260 #define REGNO_PTR_FRAME_P(REGNUM) \
2261 ((REGNUM) == STACK_POINTER_REGNUM \
2262 || (REGNUM) == FRAME_POINTER_REGNUM \
2263 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
2264 || (REGNUM) == ARG_POINTER_REGNUM \
2265 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
2266 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
2268 /* REGNUM never really appearing in the INSN stream. */
2269 #define INVALID_REGNUM (~(unsigned int) 0)
2271 extern rtx output_constant_def (tree, int);
2272 extern rtx lookup_constant_def (tree);
2274 /* Nonzero after end of reload pass.
2275 Set to 1 or 0 by reload1.c. */
2277 extern int reload_completed;
2279 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
2280 extern int epilogue_completed;
2282 /* Set to 1 while reload_as_needed is operating.
2283 Required by some machines to handle any generated moves differently. */
2285 extern int reload_in_progress;
2287 /* This macro indicates whether you may create a new
2290 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
2293 /* Nonzero after end of regstack pass.
2294 Set to 1 or 0 by reg-stack.c. */
2295 extern int regstack_completed;
2298 /* If this is nonzero, we do not bother generating VOLATILE
2299 around volatile memory references, and we are willing to
2300 output indirect addresses. If cse is to follow, we reject
2301 indirect addresses so a useful potential cse is generated;
2302 if it is used only once, instruction combination will produce
2303 the same indirect address eventually. */
2304 extern int cse_not_expected;
2306 /* Translates rtx code to tree code, for those codes needed by
2307 REAL_ARITHMETIC. The function returns an int because the caller may not
2308 know what `enum tree_code' means. */
2310 extern int rtx_to_tree_code (enum rtx_code);
2313 extern int delete_trivially_dead_insns (rtx, int);
2314 extern int cse_main (rtx, int);
2315 extern int exp_equiv_p (const_rtx, const_rtx, int, bool);
2316 extern unsigned hash_rtx (const_rtx x, enum machine_mode, int *, int *, bool);
2319 extern void check_for_inc_dec (rtx insn);
2322 extern int comparison_dominates_p (enum rtx_code, enum rtx_code);
2323 extern int condjump_p (const_rtx);
2324 extern int any_condjump_p (const_rtx);
2325 extern int any_uncondjump_p (const_rtx);
2326 extern rtx pc_set (const_rtx);
2327 extern rtx condjump_label (const_rtx);
2328 extern int simplejump_p (const_rtx);
2329 extern int returnjump_p (rtx);
2330 extern int eh_returnjump_p (rtx);
2331 extern int onlyjump_p (const_rtx);
2332 extern int only_sets_cc0_p (const_rtx);
2333 extern int sets_cc0_p (const_rtx);
2334 extern int invert_jump_1 (rtx, rtx);
2335 extern int invert_jump (rtx, rtx, int);
2336 extern int rtx_renumbered_equal_p (const_rtx, const_rtx);
2337 extern int true_regnum (const_rtx);
2338 extern unsigned int reg_or_subregno (const_rtx);
2339 extern int redirect_jump_1 (rtx, rtx);
2340 extern void redirect_jump_2 (rtx, rtx, rtx, int, int);
2341 extern int redirect_jump (rtx, rtx, int);
2342 extern void rebuild_jump_labels (rtx);
2343 extern void rebuild_jump_labels_chain (rtx);
2344 extern rtx reversed_comparison (const_rtx, enum machine_mode);
2345 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx);
2346 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
2347 const_rtx, const_rtx);
2348 extern void delete_for_peephole (rtx, rtx);
2349 extern int condjump_in_parallel_p (const_rtx);
2351 /* In emit-rtl.c. */
2352 extern int max_reg_num (void);
2353 extern int max_label_num (void);
2354 extern int get_first_label_num (void);
2355 extern void maybe_set_first_label_num (rtx);
2356 extern void delete_insns_since (rtx);
2357 extern void mark_reg_pointer (rtx, int);
2358 extern void mark_user_reg (rtx);
2359 extern void reset_used_flags (rtx);
2360 extern void set_used_flags (rtx);
2361 extern void reorder_insns (rtx, rtx, rtx);
2362 extern void reorder_insns_nobb (rtx, rtx, rtx);
2363 extern int get_max_insn_count (void);
2364 extern int in_sequence_p (void);
2365 extern void force_next_line_note (void);
2366 extern void init_emit (void);
2367 extern void init_emit_regs (void);
2368 extern void init_emit_once (void);
2369 extern void push_topmost_sequence (void);
2370 extern void pop_topmost_sequence (void);
2371 extern void set_new_first_and_last_insn (rtx, rtx);
2372 extern unsigned int unshare_all_rtl (void);
2373 extern void unshare_all_rtl_again (rtx);
2374 extern void unshare_all_rtl_in_chain (rtx);
2375 extern void verify_rtl_sharing (void);
2376 extern void link_cc0_insns (rtx);
2377 extern void add_insn (rtx);
2378 extern void add_insn_before (rtx, rtx, struct basic_block_def *);
2379 extern void add_insn_after (rtx, rtx, struct basic_block_def *);
2380 extern void remove_insn (rtx);
2381 extern rtx emit (rtx);
2382 extern rtx delete_insn (rtx);
2383 extern rtx entry_of_function (void);
2384 extern void emit_insn_at_entry (rtx);
2385 extern void delete_insn_chain (rtx, rtx, bool);
2386 extern rtx unlink_insn_chain (rtx, rtx);
2387 extern rtx delete_insn_and_edges (rtx);
2388 extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx);
2389 extern rtx gen_const_mem (enum machine_mode, rtx);
2390 extern rtx gen_frame_mem (enum machine_mode, rtx);
2391 extern rtx gen_tmp_stack_mem (enum machine_mode, rtx);
2392 extern bool validate_subreg (enum machine_mode, enum machine_mode,
2393 const_rtx, unsigned int);
2396 extern unsigned int extended_count (const_rtx, enum machine_mode, int);
2397 extern rtx remove_death (unsigned int, rtx);
2398 extern void dump_combine_stats (FILE *);
2399 extern void dump_combine_total_stats (FILE *);
2401 /* In cfgcleanup.c */
2402 extern void delete_dead_jumptables (void);
2404 /* In sched-vis.c. */
2405 extern void debug_bb_n_slim (int);
2406 extern void debug_bb_slim (struct basic_block_def *);
2407 extern void print_rtl_slim (FILE *, rtx, rtx, int, int);
2408 extern void print_rtl_slim_with_bb (FILE *, rtx, int);
2409 extern void dump_insn_slim (FILE *f, rtx x);
2410 extern void debug_insn_slim (rtx x);
2412 /* In sched-rgn.c. */
2413 extern void schedule_insns (void);
2415 /* In sched-ebb.c. */
2416 extern void schedule_ebbs (void);
2418 /* In sel-sched-dump.c. */
2419 extern void sel_sched_fix_param (const char *param, const char *val);
2421 /* In print-rtl.c */
2422 extern const char *print_rtx_head;
2423 extern void debug_rtx (const_rtx);
2424 extern void debug_rtx_list (const_rtx, int);
2425 extern void debug_rtx_range (const_rtx, const_rtx);
2426 extern const_rtx debug_rtx_find (const_rtx, int);
2427 extern void print_mem_expr (FILE *, const_tree);
2428 extern void print_rtl (FILE *, const_rtx);
2429 extern void print_simple_rtl (FILE *, const_rtx);
2430 extern int print_rtl_single (FILE *, const_rtx);
2431 extern void print_inline_rtx (FILE *, const_rtx, int);
2434 extern void reposition_prologue_and_epilogue_notes (void);
2435 extern int prologue_epilogue_contains (const_rtx);
2436 extern int sibcall_epilogue_contains (const_rtx);
2437 extern void mark_temp_addr_taken (rtx);
2438 extern void update_temp_slot_address (rtx, rtx);
2439 extern void maybe_copy_prologue_epilogue_insn (rtx, rtx);
2442 extern void expand_null_return (void);
2443 extern void expand_naked_return (void);
2444 extern void emit_jump (rtx);
2447 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
2451 extern void print_rtl_with_bb (FILE *, const_rtx);
2454 extern void dump_reg_info (FILE *);
2455 extern void dump_flow_info (FILE *, int);
2458 extern void init_expmed (void);
2459 extern void expand_inc (rtx, rtx);
2460 extern void expand_dec (rtx, rtx);
2463 extern bool can_copy_p (enum machine_mode);
2464 extern bool can_assign_to_reg_without_clobbers_p (rtx);
2465 extern rtx fis_get_condition (rtx);
2469 extern HARD_REG_SET eliminable_regset;
2471 extern void mark_elimination (int, int);
2474 extern int reg_classes_intersect_p (reg_class_t, reg_class_t);
2475 extern int reg_class_subset_p (reg_class_t, reg_class_t);
2476 extern void globalize_reg (tree, int);
2477 extern void init_reg_modes_target (void);
2478 extern void init_regs (void);
2479 extern void reinit_regs (void);
2480 extern void init_fake_stack_mems (void);
2481 extern void save_register_info (void);
2482 extern void init_reg_sets (void);
2483 extern void regclass (rtx, int);
2484 extern void reg_scan (rtx, unsigned int);
2485 extern void fix_register (const char *, int, int);
2486 extern bool invalid_mode_change_p (unsigned int, enum reg_class);
2489 extern void dbr_schedule (rtx);
2492 extern int function_invariant_p (const_rtx);
2502 LCT_RETURNS_TWICE = 5
2505 extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int,
2507 extern rtx emit_library_call_value (rtx, rtx, enum libcall_type,
2508 enum machine_mode, int, ...);
2511 extern void init_varasm_once (void);
2513 extern rtx make_debug_expr_from_rtl (const_rtx);
2516 extern bool read_rtx (const char *, rtx *);
2519 extern rtx canon_rtx (rtx);
2520 extern int true_dependence (const_rtx, enum machine_mode, const_rtx, bool (*)(const_rtx, bool));
2521 extern rtx get_addr (rtx);
2522 extern int canon_true_dependence (const_rtx, enum machine_mode, rtx, const_rtx,
2523 rtx, bool (*)(const_rtx, bool));
2524 extern int read_dependence (const_rtx, const_rtx);
2525 extern int anti_dependence (const_rtx, const_rtx);
2526 extern int output_dependence (const_rtx, const_rtx);
2527 extern int may_alias_p (const_rtx, const_rtx);
2528 extern void init_alias_target (void);
2529 extern void init_alias_analysis (void);
2530 extern void end_alias_analysis (void);
2531 extern void vt_equate_reg_base_value (const_rtx, const_rtx);
2532 extern bool memory_modified_in_insn_p (const_rtx, const_rtx);
2533 extern rtx find_base_term (rtx);
2534 extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int);
2535 extern rtx get_reg_known_value (unsigned int);
2536 extern bool get_reg_known_equiv_p (unsigned int);
2537 extern rtx get_reg_base_value (unsigned int);
2540 extern int stack_regs_mentioned (const_rtx insn);
2544 extern GTY(()) rtx stack_limit_rtx;
2547 extern void invert_br_probabilities (rtx);
2548 extern bool expensive_function_p (int);
2550 /* In var-tracking.c */
2551 extern unsigned int variable_tracking_main (void);
2553 /* In stor-layout.c. */
2554 extern void get_mode_bounds (enum machine_mode, int, enum machine_mode,
2557 /* In loop-unswitch.c */
2558 extern rtx reversed_condition (rtx);
2559 extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx);
2562 extern rtx canon_condition (rtx);
2563 extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *);
2566 extern unsigned int compute_alignments (void);
2567 extern int asm_str_count (const char *templ);
2571 rtx (*gen_lowpart) (enum machine_mode, rtx);
2572 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx);
2573 rtx (*reg_nonzero_bits) (const_rtx, enum machine_mode, const_rtx, enum machine_mode,
2574 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *);
2575 rtx (*reg_num_sign_bit_copies) (const_rtx, enum machine_mode, const_rtx, enum machine_mode,
2576 unsigned int, unsigned int *);
2577 bool (*reg_truncated_to_mode) (enum machine_mode, const_rtx);
2579 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
2582 /* Each pass can provide its own. */
2583 extern struct rtl_hooks rtl_hooks;
2585 /* ... but then it has to restore these. */
2586 extern const struct rtl_hooks general_rtl_hooks;
2588 /* Keep this for the nonce. */
2589 #define gen_lowpart rtl_hooks.gen_lowpart
2591 extern void insn_locators_alloc (void);
2592 extern void insn_locators_free (void);
2593 extern void insn_locators_finalize (void);
2594 extern void set_curr_insn_source_location (location_t);
2595 extern location_t get_curr_insn_source_location (void);
2596 extern void set_curr_insn_block (tree);
2597 extern tree get_curr_insn_block (void);
2598 extern int curr_insn_locator (void);
2599 extern bool optimize_insn_for_size_p (void);
2600 extern bool optimize_insn_for_speed_p (void);
2603 extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *)
2605 extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *)
2608 #define fatal_insn(msgid, insn) \
2609 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
2610 #define fatal_insn_not_found(insn) \
2611 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
2615 #endif /* ! GCC_RTL_H */