1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2013 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
23 #include "statistics.h"
28 #include "fixed-value.h"
33 /* Value used by some passes to "recognize" noop moves as valid
35 #define NOOP_MOVE_INSN_CODE INT_MAX
37 /* Register Transfer Language EXPRESSIONS CODES */
39 #define RTX_CODE enum rtx_code
42 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
43 #include "rtl.def" /* rtl expressions are documented here */
46 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
48 Assumes default enum value assignment. */
50 /* The cast here, saves many elsewhere. */
51 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
53 /* Similar, but since generator files get more entries... */
55 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
58 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
61 /* We check bit 0-1 of some rtx class codes in the predicates below. */
63 /* Bit 0 = comparison if 0, arithmetic is 1
64 Bit 1 = 1 if commutative. */
70 /* Must follow the four preceding values. */
77 /* Bit 0 = 1 if constant. */
86 #define RTX_OBJ_MASK (~1)
87 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
88 #define RTX_COMPARE_MASK (~1)
89 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
90 #define RTX_ARITHMETIC_MASK (~1)
91 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
92 #define RTX_BINARY_MASK (~3)
93 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
94 #define RTX_COMMUTATIVE_MASK (~2)
95 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
96 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
98 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
99 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
101 extern const char * const rtx_name
[NUM_RTX_CODE
];
102 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
104 extern const char * const rtx_format
[NUM_RTX_CODE
];
105 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
107 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
108 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
110 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
111 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
113 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
114 relative to which the offsets are calculated, as explained in rtl.def. */
117 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
118 unsigned min_align
: 8;
120 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
121 unsigned min_after_vec
: 1; /* minimum address target label is
122 after the ADDR_DIFF_VEC. */
123 unsigned max_after_vec
: 1; /* maximum address target label is
124 after the ADDR_DIFF_VEC. */
125 unsigned min_after_base
: 1; /* minimum address target label is
127 unsigned max_after_base
: 1; /* maximum address target label is
129 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
130 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
133 } addr_diff_vec_flags
;
135 /* Structure used to describe the attributes of a MEM. These are hashed
136 so MEMs that the same attributes share a data structure. This means
137 they cannot be modified in place. */
138 typedef struct GTY(()) mem_attrs
140 /* The expression that the MEM accesses, or null if not known.
141 This expression might be larger than the memory reference itself.
142 (In other words, the MEM might access only part of the object.) */
145 /* The offset of the memory reference from the start of EXPR.
146 Only valid if OFFSET_KNOWN_P. */
147 HOST_WIDE_INT offset
;
149 /* The size of the memory reference in bytes. Only valid if
153 /* The alias set of the memory reference. */
154 alias_set_type alias
;
156 /* The alignment of the reference in bits. Always a multiple of
157 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
158 than the memory reference itself. */
161 /* The address space that the memory reference uses. */
162 unsigned char addrspace
;
164 /* True if OFFSET is known. */
167 /* True if SIZE is known. */
171 /* Structure used to describe the attributes of a REG in similar way as
172 mem_attrs does for MEM above. Note that the OFFSET field is calculated
173 in the same way as for mem_attrs, rather than in the same way as a
174 SUBREG_BYTE. For example, if a big-endian target stores a byte
175 object in the low part of a 4-byte register, the OFFSET field
176 will be -3 rather than 0. */
178 typedef struct GTY(()) reg_attrs
{
179 tree decl
; /* decl corresponding to REG. */
180 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
183 /* Common union for an element of an rtx. */
188 unsigned int rt_uint
;
192 enum machine_mode rt_type
;
193 addr_diff_vec_flags rt_addr_diff_vec_flags
;
194 struct cselib_val_struct
*rt_cselib
;
199 struct constant_descriptor_rtx
*rt_constant
;
200 struct dw_cfi_struct
*rt_cfi
;
202 typedef union rtunion_def rtunion
;
204 /* This structure remembers the position of a SYMBOL_REF within an
205 object_block structure. A SYMBOL_REF only provides this information
206 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
207 struct GTY(()) block_symbol
{
208 /* The usual SYMBOL_REF fields. */
209 rtunion
GTY ((skip
)) fld
[3];
211 /* The block that contains this object. */
212 struct object_block
*block
;
214 /* The offset of this object from the start of its block. It is negative
215 if the symbol has not yet been assigned an offset. */
216 HOST_WIDE_INT offset
;
219 /* Describes a group of objects that are to be placed together in such
220 a way that their relative positions are known. */
221 struct GTY(()) object_block
{
222 /* The section in which these objects should be placed. */
225 /* The alignment of the first object, measured in bits. */
226 unsigned int alignment
;
228 /* The total size of the objects, measured in bytes. */
231 /* The SYMBOL_REFs for each object. The vector is sorted in
232 order of increasing offset and the following conditions will
233 hold for each element X:
235 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
236 !SYMBOL_REF_ANCHOR_P (X)
237 SYMBOL_REF_BLOCK (X) == [address of this structure]
238 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
239 vec
<rtx
, va_gc
> *objects
;
241 /* All the anchor SYMBOL_REFs used to address these objects, sorted
242 in order of increasing offset, and then increasing TLS model.
243 The following conditions will hold for each element X in this vector:
245 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
246 SYMBOL_REF_ANCHOR_P (X)
247 SYMBOL_REF_BLOCK (X) == [address of this structure]
248 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
249 vec
<rtx
, va_gc
> *anchors
;
252 /* RTL expression ("rtx"). */
254 struct GTY((chain_next ("RTX_NEXT (&%h)"),
255 chain_prev ("RTX_PREV (&%h)"), variable_size
)) rtx_def
{
256 /* The kind of expression this is. */
257 ENUM_BITFIELD(rtx_code
) code
: 16;
259 /* The kind of value the expression has. */
260 ENUM_BITFIELD(machine_mode
) mode
: 8;
262 /* 1 in a MEM if we should keep the alias set for this mem unchanged
263 when we access a component.
264 1 in a CALL_INSN if it is a sibling call.
265 1 in a SET that is for a return.
266 In a CODE_LABEL, part of the two-bit alternate entry field.
267 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
268 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
269 1 in a SUBREG generated by LRA for reload insns. */
270 unsigned int jump
: 1;
271 /* In a CODE_LABEL, part of the two-bit alternate entry field.
272 1 in a MEM if it cannot trap.
273 1 in a CALL_INSN logically equivalent to
274 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
275 unsigned int call
: 1;
276 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
277 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
278 1 in a SYMBOL_REF if it addresses something in the per-function
280 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
281 1 in a NOTE, or EXPR_LIST for a const call.
282 1 in a JUMP_INSN of an annulling branch.
283 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
284 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
285 1 in a clobber temporarily created for LRA. */
286 unsigned int unchanging
: 1;
287 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
288 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
289 if it has been deleted.
290 1 in a REG expression if corresponds to a variable declared by the user,
291 0 for an internally generated temporary.
292 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
293 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
295 In a SYMBOL_REF, this flag is used for machine-specific purposes.
296 In a PREFETCH, this flag indicates that it should be considered a scheduling
298 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
299 unsigned int volatil
: 1;
300 /* 1 in a REG if the register is used only in exit code a loop.
301 1 in a SUBREG expression if was generated from a variable with a
303 1 in a CODE_LABEL if the label is used for nonlocal gotos
304 and must not be deleted even if its count is zero.
305 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
306 together with the preceding insn. Valid only within sched.
307 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
308 from the target of a branch. Valid from reorg until end of compilation;
311 The name of the field is historical. It used to be used in MEMs
312 to record whether the MEM accessed part of a structure. */
313 unsigned int in_struct
: 1;
314 /* At the end of RTL generation, 1 if this rtx is used. This is used for
315 copying shared structure. See `unshare_all_rtl'.
316 In a REG, this is not needed for that purpose, and used instead
317 in `leaf_renumber_regs_insn'.
318 1 in a SYMBOL_REF, means that emit_library_call
319 has used it as the function.
320 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
321 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
322 unsigned int used
: 1;
323 /* 1 in an INSN or a SET if this rtx is related to the call frame,
324 either changing how we compute the frame address or saving and
325 restoring registers in the prologue and epilogue.
326 1 in a REG or MEM if it is a pointer.
327 1 in a SYMBOL_REF if it addresses something in the per-function
328 constant string pool.
329 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
330 unsigned frame_related
: 1;
331 /* 1 in a REG or PARALLEL that is the current function's return value.
332 1 in a SYMBOL_REF for a weak symbol.
333 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
334 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
335 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
336 unsigned return_val
: 1;
338 /* The first element of the operands of this rtx.
339 The number of operands and their types are controlled
340 by the `code' field, according to rtl.def. */
343 HOST_WIDE_INT hwint
[1];
344 struct block_symbol block_sym
;
345 struct real_value rv
;
346 struct fixed_value fv
;
347 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
350 /* The size in bytes of an rtx header (code, mode and flags). */
351 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
353 /* The size in bytes of an rtx with code CODE. */
354 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
356 #define NULL_RTX (rtx) 0
358 /* The "next" and "previous" RTX, relative to this one. */
360 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
361 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
363 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
365 #define RTX_PREV(X) ((INSN_P (X) \
367 || JUMP_TABLE_DATA_P (X) \
370 && PREV_INSN (X) != NULL \
371 && NEXT_INSN (PREV_INSN (X)) == X \
372 ? PREV_INSN (X) : NULL)
374 /* Define macros to access the `code' field of the rtx. */
376 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
377 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
379 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
380 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
382 /* RTL vector. These appear inside RTX's when there is a need
383 for a variable number of things. The principle use is inside
384 PARALLEL expressions. */
386 struct GTY((variable_size
)) rtvec_def
{
387 int num_elem
; /* number of elements */
388 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
391 #define NULL_RTVEC (rtvec) 0
393 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
394 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
396 /* Predicate yielding nonzero iff X is an rtx for a register. */
397 #define REG_P(X) (GET_CODE (X) == REG)
399 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
400 #define MEM_P(X) (GET_CODE (X) == MEM)
402 /* Match CONST_*s that can represent compile-time constant integers. */
403 #define CASE_CONST_SCALAR_INT \
407 /* Match CONST_*s for which pointer equality corresponds to value equality. */
408 #define CASE_CONST_UNIQUE \
413 /* Match all CONST_* rtxes. */
414 #define CASE_CONST_ANY \
420 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
421 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
423 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
424 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
426 /* Predicate yielding true iff X is an rtx for a double-int
427 or floating point constant. */
428 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
430 /* Predicate yielding true iff X is an rtx for a double-int. */
431 #define CONST_DOUBLE_AS_INT_P(X) \
432 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
434 /* Predicate yielding true iff X is an rtx for a integer const. */
435 #define CONST_SCALAR_INT_P(X) \
436 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
438 /* Predicate yielding true iff X is an rtx for a double-int. */
439 #define CONST_DOUBLE_AS_FLOAT_P(X) \
440 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
442 /* Predicate yielding nonzero iff X is a label insn. */
443 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
445 /* Predicate yielding nonzero iff X is a jump insn. */
446 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
448 /* Predicate yielding nonzero iff X is a call insn. */
449 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
451 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
452 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
454 /* Predicate yielding nonzero iff X is a debug note/insn. */
455 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
457 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
458 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
460 /* Nonzero if DEBUG_INSN_P may possibly hold. */
461 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
463 /* Predicate yielding nonzero iff X is a real insn. */
465 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
467 /* Predicate yielding nonzero iff X is a note insn. */
468 #define NOTE_P(X) (GET_CODE (X) == NOTE)
470 /* Predicate yielding nonzero iff X is a barrier insn. */
471 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
473 /* Predicate yielding nonzero iff X is a data for a jump table. */
474 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
476 /* Predicate yielding nonzero iff X is a return or simple_return. */
477 #define ANY_RETURN_P(X) \
478 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
480 /* 1 if X is a unary operator. */
483 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
485 /* 1 if X is a binary operator. */
487 #define BINARY_P(X) \
488 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
490 /* 1 if X is an arithmetic operator. */
492 #define ARITHMETIC_P(X) \
493 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
494 == RTX_ARITHMETIC_RESULT)
496 /* 1 if X is an arithmetic operator. */
498 #define COMMUTATIVE_ARITH_P(X) \
499 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
501 /* 1 if X is a commutative arithmetic operator or a comparison operator.
502 These two are sometimes selected together because it is possible to
503 swap the two operands. */
505 #define SWAPPABLE_OPERANDS_P(X) \
506 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
507 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
508 | (1 << RTX_COMPARE)))
510 /* 1 if X is a non-commutative operator. */
512 #define NON_COMMUTATIVE_P(X) \
513 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
514 == RTX_NON_COMMUTATIVE_RESULT)
516 /* 1 if X is a commutative operator on integers. */
518 #define COMMUTATIVE_P(X) \
519 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
520 == RTX_COMMUTATIVE_RESULT)
522 /* 1 if X is a relational operator. */
524 #define COMPARISON_P(X) \
525 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
527 /* 1 if X is a constant value that is an integer. */
529 #define CONSTANT_P(X) \
530 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
532 /* 1 if X can be used to represent an object. */
533 #define OBJECT_P(X) \
534 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
536 /* General accessor macros for accessing the fields of an rtx. */
538 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
539 /* The bit with a star outside the statement expr and an & inside is
540 so that N can be evaluated only once. */
541 #define RTL_CHECK1(RTX, N, C1) __extension__ \
542 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
543 const enum rtx_code _code = GET_CODE (_rtx); \
544 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
545 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
547 if (GET_RTX_FORMAT(_code)[_n] != C1) \
548 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
550 &_rtx->u.fld[_n]; }))
552 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
553 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
554 const enum rtx_code _code = GET_CODE (_rtx); \
555 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
556 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
558 if (GET_RTX_FORMAT(_code)[_n] != C1 \
559 && GET_RTX_FORMAT(_code)[_n] != C2) \
560 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
562 &_rtx->u.fld[_n]; }))
564 #define RTL_CHECKC1(RTX, N, C) __extension__ \
565 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
566 if (GET_CODE (_rtx) != (C)) \
567 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
569 &_rtx->u.fld[_n]; }))
571 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
572 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
573 const enum rtx_code _code = GET_CODE (_rtx); \
574 if (_code != (C1) && _code != (C2)) \
575 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
577 &_rtx->u.fld[_n]; }))
579 #define RTVEC_ELT(RTVEC, I) __extension__ \
580 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
581 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
582 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
584 &_rtvec->elem[_i]; }))
586 #define XWINT(RTX, N) __extension__ \
587 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
588 const enum rtx_code _code = GET_CODE (_rtx); \
589 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
590 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
592 if (GET_RTX_FORMAT(_code)[_n] != 'w') \
593 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
595 &_rtx->u.hwint[_n]; }))
597 #define XCWINT(RTX, N, C) __extension__ \
598 (*({ __typeof (RTX) const _rtx = (RTX); \
599 if (GET_CODE (_rtx) != (C)) \
600 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
602 &_rtx->u.hwint[N]; }))
604 #define XCMWINT(RTX, N, C, M) __extension__ \
605 (*({ __typeof (RTX) const _rtx = (RTX); \
606 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
607 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
608 __LINE__, __FUNCTION__); \
609 &_rtx->u.hwint[N]; }))
611 #define XCNMPRV(RTX, C, M) __extension__ \
612 ({ __typeof (RTX) const _rtx = (RTX); \
613 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
614 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
615 __LINE__, __FUNCTION__); \
618 #define XCNMPFV(RTX, C, M) __extension__ \
619 ({ __typeof (RTX) const _rtx = (RTX); \
620 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
621 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
622 __LINE__, __FUNCTION__); \
625 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
626 ({ __typeof (RTX) const _symbol = (RTX); \
627 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \
628 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
629 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
631 &_symbol->u.block_sym; })
633 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
636 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
639 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
642 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
645 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
646 const char *, int, const char *)
648 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, enum machine_mode
,
649 bool, const char *, int, const char *)
651 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
653 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
657 #else /* not ENABLE_RTL_CHECKING */
659 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
660 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
661 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
662 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
663 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
664 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
665 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
666 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
667 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
668 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
669 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
670 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
674 /* General accessor macros for accessing the flags of an rtx. */
676 /* Access an individual rtx flag, with no checking of any kind. */
677 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
679 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
680 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
681 ({ __typeof (RTX) const _rtx = (RTX); \
682 if (GET_CODE(_rtx) != C1) \
683 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
687 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
688 ({ __typeof (RTX) const _rtx = (RTX); \
689 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \
690 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
694 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
695 ({ __typeof (RTX) const _rtx = (RTX); \
696 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
697 && GET_CODE(_rtx) != C3) \
698 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
702 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
703 ({ __typeof (RTX) const _rtx = (RTX); \
704 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
705 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \
706 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
710 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
711 ({ __typeof (RTX) const _rtx = (RTX); \
712 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
713 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
714 && GET_CODE(_rtx) != C5) \
715 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
719 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
721 ({ __typeof (RTX) const _rtx = (RTX); \
722 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
723 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
724 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \
725 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
729 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
731 ({ __typeof (RTX) const _rtx = (RTX); \
732 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
733 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
734 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
735 && GET_CODE(_rtx) != C7) \
736 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
740 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \
742 ({ __typeof (RTX) const _rtx = (RTX); \
743 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
744 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
745 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
746 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \
747 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
751 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
756 #else /* not ENABLE_RTL_FLAG_CHECKING */
758 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
759 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
760 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
761 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
762 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
763 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
764 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
765 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX)
768 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
769 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
770 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
771 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
772 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
773 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
774 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
775 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
776 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
777 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
779 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
780 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
782 /* These are like XINT, etc. except that they expect a '0' field instead
783 of the normal type code. */
785 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
786 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
787 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
788 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
789 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
790 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
791 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
792 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
793 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
794 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
795 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
796 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
797 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
799 /* Access a '0' field with any type. */
800 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
802 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
803 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
804 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
805 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
806 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
807 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
808 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
809 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
810 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
811 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
813 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
814 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
816 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
818 /* ACCESS MACROS for particular fields of insns. */
820 /* Holds a unique number for each insn.
821 These are not necessarily sequentially increasing. */
822 #define INSN_UID(INSN) XINT (INSN, 0)
824 /* Chain insns together in sequence. */
825 #define PREV_INSN(INSN) XEXP (INSN, 1)
826 #define NEXT_INSN(INSN) XEXP (INSN, 2)
828 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3)
830 /* The body of an insn. */
831 #define PATTERN(INSN) XEXP (INSN, 4)
833 #define INSN_LOCATION(INSN) XUINT (INSN, 5)
835 #define INSN_HAS_LOCATION(INSN) ((LOCATION_LOCUS (INSN_LOCATION (INSN)))\
838 /* LOCATION of an RTX if relevant. */
839 #define RTL_LOCATION(X) (INSN_P (X) ? \
840 INSN_LOCATION (X) : UNKNOWN_LOCATION)
842 /* Code number of instruction, from when it was recognized.
843 -1 means this instruction has not been recognized yet. */
844 #define INSN_CODE(INSN) XINT (INSN, 6)
846 #define RTX_FRAME_RELATED_P(RTX) \
847 (RTL_FLAG_CHECK6("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
848 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
850 /* 1 if RTX is an insn that has been deleted. */
851 #define INSN_DELETED_P(RTX) \
852 (RTL_FLAG_CHECK8("INSN_DELETED_P", (RTX), DEBUG_INSN, INSN, \
853 CALL_INSN, JUMP_INSN, JUMP_TABLE_DATA, \
854 CODE_LABEL, BARRIER, NOTE)->volatil)
856 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
858 #define RTL_CONST_CALL_P(RTX) \
859 (RTL_FLAG_CHECK1("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
861 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
863 #define RTL_PURE_CALL_P(RTX) \
864 (RTL_FLAG_CHECK1("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
866 /* 1 if RTX is a call to a const or pure function. */
867 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
868 (RTL_CONST_CALL_P(RTX) || RTL_PURE_CALL_P(RTX))
870 /* 1 if RTX is a call to a looping const or pure function. Built from
871 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
872 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
873 (RTL_FLAG_CHECK1("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
875 /* 1 if RTX is a call_insn for a sibling call. */
876 #define SIBLING_CALL_P(RTX) \
877 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
879 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
880 #define INSN_ANNULLED_BRANCH_P(RTX) \
881 (RTL_FLAG_CHECK1("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
883 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
884 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
885 executed if the branch is taken. For annulled branches with this bit
886 clear, the insn should be executed only if the branch is not taken. */
887 #define INSN_FROM_TARGET_P(RTX) \
888 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)
890 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
891 See the comments for ADDR_DIFF_VEC in rtl.def. */
892 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
894 /* In a VALUE, the value cselib has assigned to RTX.
895 This is a "struct cselib_val_struct", see cselib.h. */
896 #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
898 /* Holds a list of notes on what this insn does to various REGs.
899 It is a chain of EXPR_LIST rtx's, where the second operand is the
900 chain pointer and the first operand is the REG being described.
901 The mode field of the EXPR_LIST contains not a real machine mode
902 but a value from enum reg_note. */
903 #define REG_NOTES(INSN) XEXP(INSN, 7)
905 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
907 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
911 #define DEF_REG_NOTE(NAME) NAME,
912 #include "reg-notes.def"
917 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
918 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
919 #define PUT_REG_NOTE_KIND(LINK, KIND) \
920 PUT_MODE (LINK, (enum machine_mode) (KIND))
922 /* Names for REG_NOTE's in EXPR_LIST insn's. */
924 extern const char * const reg_note_name
[];
925 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
927 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
928 USE and CLOBBER expressions.
929 USE expressions list the registers filled with arguments that
930 are passed to the function.
931 CLOBBER expressions document the registers explicitly clobbered
933 Pseudo registers can not be mentioned in this list. */
934 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8)
936 /* The label-number of a code-label. The assembler label
937 is made from `L' and the label-number printed in decimal.
938 Label numbers are unique in a compilation. */
939 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6)
941 /* In a NOTE that is a line number, this is a string for the file name that the
942 line is in. We use the same field to record block numbers temporarily in
943 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
944 between ints and pointers if we use a different macro for the block number.)
948 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE)
949 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE)
950 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
951 #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE)
952 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
953 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
954 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE)
955 #define NOTE_CFI(INSN) XCCFI (INSN, 4, NOTE)
956 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 4, NOTE)
958 /* In a NOTE that is a line number, this is the line number.
959 Other kinds of NOTEs are identified by negative numbers here. */
960 #define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE)
962 /* Nonzero if INSN is a note marking the beginning of a basic block. */
963 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
964 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
966 /* Variable declaration and the location of a variable. */
967 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
968 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
970 /* Initialization status of the variable in the location. Status
971 can be unknown, uninitialized or initialized. See enumeration
973 #define PAT_VAR_LOCATION_STATUS(PAT) \
974 ((enum var_init_status) (XCINT ((PAT), 2, VAR_LOCATION)))
976 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
977 #define NOTE_VAR_LOCATION_DECL(NOTE) \
978 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
979 #define NOTE_VAR_LOCATION_LOC(NOTE) \
980 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
981 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
982 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
984 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
985 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
987 /* Accessors for a tree-expanded var location debug insn. */
988 #define INSN_VAR_LOCATION_DECL(INSN) \
989 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
990 #define INSN_VAR_LOCATION_LOC(INSN) \
991 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
992 #define INSN_VAR_LOCATION_STATUS(INSN) \
993 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
995 /* Expand to the RTL that denotes an unknown variable location in a
997 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
999 /* Determine whether X is such an unknown location. */
1000 #define VAR_LOC_UNKNOWN_P(X) \
1001 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1003 /* 1 if RTX is emitted after a call, but it should take effect before
1004 the call returns. */
1005 #define NOTE_DURING_CALL_P(RTX) \
1006 (RTL_FLAG_CHECK1("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1008 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1009 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1011 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1012 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1014 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1015 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1017 /* Codes that appear in the NOTE_KIND field for kinds of notes
1018 that are not line numbers. These codes are all negative.
1020 Notice that we do not try to use zero here for any of
1021 the special note codes because sometimes the source line
1022 actually can be zero! This happens (for example) when we
1023 are generating code for the per-translation-unit constructor
1024 and destructor routines for some C++ translation unit. */
1028 #define DEF_INSN_NOTE(NAME) NAME,
1029 #include "insn-notes.def"
1030 #undef DEF_INSN_NOTE
1035 /* Names for NOTE insn's other than line numbers. */
1037 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1038 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1039 (note_insn_name[(NOTE_CODE)])
1041 /* The name of a label, in case it corresponds to an explicit label
1042 in the input source code. */
1043 #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL)
1045 /* In jump.c, each label contains a count of the number
1046 of LABEL_REFs that point at it, so unused labels can be deleted. */
1047 #define LABEL_NUSES(RTX) XCINT (RTX, 5, CODE_LABEL)
1049 /* Labels carry a two-bit field composed of the ->jump and ->call
1050 bits. This field indicates whether the label is an alternate
1051 entry point, and if so, what kind. */
1054 LABEL_NORMAL
= 0, /* ordinary label */
1055 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1056 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1057 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1060 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1062 /* Retrieve the kind of LABEL. */
1063 #define LABEL_KIND(LABEL) __extension__ \
1064 ({ __typeof (LABEL) const _label = (LABEL); \
1065 if (! LABEL_P (_label)) \
1066 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1068 (enum label_kind) ((_label->jump << 1) | _label->call); })
1070 /* Set the kind of LABEL. */
1071 #define SET_LABEL_KIND(LABEL, KIND) do { \
1072 __typeof (LABEL) const _label = (LABEL); \
1073 const unsigned int _kind = (KIND); \
1074 if (! LABEL_P (_label)) \
1075 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1077 _label->jump = ((_kind >> 1) & 1); \
1078 _label->call = (_kind & 1); \
1083 /* Retrieve the kind of LABEL. */
1084 #define LABEL_KIND(LABEL) \
1085 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1087 /* Set the kind of LABEL. */
1088 #define SET_LABEL_KIND(LABEL, KIND) do { \
1089 rtx const _label = (LABEL); \
1090 const unsigned int _kind = (KIND); \
1091 _label->jump = ((_kind >> 1) & 1); \
1092 _label->call = (_kind & 1); \
1095 #endif /* rtl flag checking */
1097 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1099 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1100 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1101 be decremented and possibly the label can be deleted. */
1102 #define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN)
1104 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1105 goes through all the LABEL_REFs that jump to that label. The chain
1106 eventually winds up at the CODE_LABEL: it is circular. */
1107 #define LABEL_REFS(LABEL) XCEXP (LABEL, 4, CODE_LABEL)
1109 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1110 be used on RHS. Use SET_REGNO to change the value. */
1111 #define REGNO(RTX) (rhs_regno(RTX))
1112 #define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
1113 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
1115 /* ORIGINAL_REGNO holds the number the register originally had; for a
1116 pseudo register turned into a hard reg this will hold the old pseudo
1118 #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)
1120 /* Force the REGNO macro to only be used on the lhs. */
1121 static inline unsigned int
1122 rhs_regno (const_rtx x
)
1124 return XCUINT (x
, 0, REG
);
1128 /* 1 if RTX is a reg or parallel that is the current function's return
1130 #define REG_FUNCTION_VALUE_P(RTX) \
1131 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1133 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1134 #define REG_USERVAR_P(RTX) \
1135 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil)
1137 /* 1 if RTX is a reg that holds a pointer value. */
1138 #define REG_POINTER(RTX) \
1139 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related)
1141 /* 1 if RTX is a mem that holds a pointer value. */
1142 #define MEM_POINTER(RTX) \
1143 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related)
1145 /* 1 if the given register REG corresponds to a hard register. */
1146 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1148 /* 1 if the given register number REG_NO corresponds to a hard register. */
1149 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1151 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1152 #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)
1153 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1155 /* For a CONST_DOUBLE:
1156 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1157 low-order word and ..._HIGH the high-order.
1158 For a float, there is a REAL_VALUE_TYPE structure, and
1159 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1160 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1161 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1162 #define CONST_DOUBLE_REAL_VALUE(r) \
1163 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1165 #define CONST_FIXED_VALUE(r) \
1166 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1167 #define CONST_FIXED_VALUE_HIGH(r) \
1168 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high))
1169 #define CONST_FIXED_VALUE_LOW(r) \
1170 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low))
1172 /* For a CONST_VECTOR, return element #n. */
1173 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1175 /* For a CONST_VECTOR, return the number of elements in a vector. */
1176 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1178 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1179 SUBREG_BYTE extracts the byte-number. */
1181 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1182 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1185 /* Return the right cost to give to an operation
1186 to make the cost of the corresponding register-to-register instruction
1187 N times that of a fast register-to-register instruction. */
1188 #define COSTS_N_INSNS(N) ((N) * 4)
1190 /* Maximum cost of an rtl expression. This value has the special meaning
1191 not to use an rtx with this cost under any circumstances. */
1192 #define MAX_COST INT_MAX
1194 /* A structure to hold all available cost information about an rtl
1196 struct full_rtx_costs
1202 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1204 init_costs_to_max (struct full_rtx_costs
*c
)
1206 c
->speed
= MAX_COST
;
1210 /* Initialize a full_rtx_costs structure C to zero cost. */
1212 init_costs_to_zero (struct full_rtx_costs
*c
)
1218 /* Compare two full_rtx_costs structures A and B, returning true
1219 if A < B when optimizing for speed. */
1221 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1225 return (a
->speed
< b
->speed
1226 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1228 return (a
->size
< b
->size
1229 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1232 /* Increase both members of the full_rtx_costs structure C by the
1235 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1237 c
->speed
+= COSTS_N_INSNS (n
);
1238 c
->size
+= COSTS_N_INSNS (n
);
1241 /* Information about an address. This structure is supposed to be able
1242 to represent all supported target addresses. Please extend it if it
1243 is not yet general enough. */
1244 struct address_info
{
1245 /* The mode of the value being addressed, or VOIDmode if this is
1246 a load-address operation with no known address mode. */
1247 enum machine_mode mode
;
1249 /* The address space. */
1252 /* A pointer to the top-level address. */
1255 /* A pointer to the inner address, after all address mutations
1256 have been stripped from the top-level address. It can be one
1259 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
1261 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
1262 points to the step value, depending on whether the step is variable
1263 or constant respectively. SEGMENT is null.
1265 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
1266 with null fields evaluating to 0. */
1269 /* Components that make up *INNER. Each one may be null or nonnull.
1270 When nonnull, their meanings are as follows:
1272 - *SEGMENT is the "segment" of memory to which the address refers.
1273 This value is entirely target-specific and is only called a "segment"
1274 because that's its most typical use. It contains exactly one UNSPEC,
1275 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
1278 - *BASE is a variable expression representing a base address.
1279 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
1281 - *INDEX is a variable expression representing an index value.
1282 It may be a scaled expression, such as a MULT. It has exactly
1283 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
1285 - *DISP is a constant, possibly mutated. DISP_TERM points to the
1286 unmutated RTX_CONST_OBJ. */
1297 /* In a {PRE,POST}_MODIFY address, this points to a second copy
1298 of BASE_TERM, otherwise it is null. */
1301 /* ADDRESS if this structure describes an address operand, MEM if
1302 it describes a MEM address. */
1303 enum rtx_code addr_outer_code
;
1305 /* If BASE is nonnull, this is the code of the rtx that contains it. */
1306 enum rtx_code base_outer_code
;
1308 /* True if this is an RTX_AUTOINC address. */
1312 extern void init_rtlanal (void);
1313 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
1314 extern int address_cost (rtx
, enum machine_mode
, addr_space_t
, bool);
1315 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
1316 struct full_rtx_costs
*);
1317 extern unsigned int subreg_lsb (const_rtx
);
1318 extern unsigned int subreg_lsb_1 (enum machine_mode
, enum machine_mode
,
1320 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode
,
1321 unsigned int, enum machine_mode
);
1322 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode
,
1323 unsigned int, enum machine_mode
);
1324 extern unsigned int subreg_regno (const_rtx
);
1325 extern int simplify_subreg_regno (unsigned int, enum machine_mode
,
1326 unsigned int, enum machine_mode
);
1327 extern unsigned int subreg_nregs (const_rtx
);
1328 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
1329 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, enum machine_mode
);
1330 extern unsigned int num_sign_bit_copies (const_rtx
, enum machine_mode
);
1331 extern bool constant_pool_constant_p (rtx
);
1332 extern bool truncated_to_mode (enum machine_mode
, const_rtx
);
1333 extern int low_bitmask_len (enum machine_mode
, unsigned HOST_WIDE_INT
);
1334 extern void split_double (rtx
, rtx
*, rtx
*);
1335 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
1336 extern void decompose_address (struct address_info
*, rtx
*,
1337 enum machine_mode
, addr_space_t
, enum rtx_code
);
1338 extern void decompose_lea_address (struct address_info
*, rtx
*);
1339 extern void decompose_mem_address (struct address_info
*, rtx
);
1340 extern void update_address (struct address_info
*);
1341 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
1342 extern enum rtx_code
get_index_code (const struct address_info
*);
1344 #ifndef GENERATOR_FILE
1345 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
1346 rather than size. */
1349 set_rtx_cost (rtx x
, bool speed_p
)
1351 return rtx_cost (x
, INSN
, 4, speed_p
);
1354 /* Like set_rtx_cost, but return both the speed and size costs in C. */
1357 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
1359 get_full_rtx_cost (x
, INSN
, 4, c
);
1362 /* Return the cost of moving X into a register, relative to the cost
1363 of a register move. SPEED_P is true if optimizing for speed rather
1367 set_src_cost (rtx x
, bool speed_p
)
1369 return rtx_cost (x
, SET
, 1, speed_p
);
1372 /* Like set_src_cost, but return both the speed and size costs in C. */
1375 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
1377 get_full_rtx_cost (x
, SET
, 1, c
);
1381 /* 1 if RTX is a subreg containing a reg that is already known to be
1382 sign- or zero-extended from the mode of the subreg to the mode of
1383 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
1386 When used as a LHS, is means that this extension must be done
1387 when assigning to SUBREG_REG. */
1389 #define SUBREG_PROMOTED_VAR_P(RTX) \
1390 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
1392 #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \
1394 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \
1396 _rtx->volatil = 1; \
1398 _rtx->volatil = 0; \
1399 _rtx->unchanging = (VAL); \
1403 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
1404 this gives the necessary extensions:
1407 -1 - pointer unsigned, which most often can be handled like unsigned
1408 extension, except for generating instructions where we need to
1409 emit special code (ptr_extend insns) on some architectures. */
1411 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
1412 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
1413 ? -1 : (int) (RTX)->unchanging)
1415 /* True if the subreg was generated by LRA for reload insns. Such
1416 subregs are valid only during LRA. */
1417 #define LRA_SUBREG_P(RTX) \
1418 (RTL_FLAG_CHECK1("LRA_SUBREG_P", (RTX), SUBREG)->jump)
1420 /* Access various components of an ASM_OPERANDS rtx. */
1422 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
1423 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
1424 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
1425 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
1426 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
1427 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
1428 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
1429 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
1430 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
1431 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
1432 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
1433 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
1434 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
1435 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
1436 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
1437 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
1438 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
1439 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
1441 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
1442 #define MEM_READONLY_P(RTX) \
1443 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging)
1445 /* 1 if RTX is a mem and we should keep the alias set for this mem
1446 unchanged when we access a component. Set to 1, or example, when we
1447 are already in a non-addressable component of an aggregate. */
1448 #define MEM_KEEP_ALIAS_SET_P(RTX) \
1449 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
1451 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
1452 #define MEM_VOLATILE_P(RTX) \
1453 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
1454 ASM_INPUT)->volatil)
1456 /* 1 if RTX is a mem that cannot trap. */
1457 #define MEM_NOTRAP_P(RTX) \
1458 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call)
1460 /* The memory attribute block. We provide access macros for each value
1461 in the block and provide defaults if none specified. */
1462 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
1464 /* The register attribute block. We provide access macros for each value
1465 in the block and provide defaults if none specified. */
1466 #define REG_ATTRS(RTX) X0REGATTR (RTX, 2)
1468 #ifndef GENERATOR_FILE
1469 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
1470 set, and may alias anything. Otherwise, the MEM can only alias
1471 MEMs in a conflicting alias set. This value is set in a
1472 language-dependent manner in the front-end, and should not be
1473 altered in the back-end. These set numbers are tested with
1474 alias_sets_conflict_p. */
1475 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
1477 /* For a MEM rtx, the decl it is known to refer to, if it is known to
1478 refer to part of a DECL. It may also be a COMPONENT_REF. */
1479 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
1481 /* For a MEM rtx, true if its MEM_OFFSET is known. */
1482 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
1484 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
1485 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
1487 /* For a MEM rtx, the address space. */
1488 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
1490 /* For a MEM rtx, true if its MEM_SIZE is known. */
1491 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
1493 /* For a MEM rtx, the size in bytes of the MEM. */
1494 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
1496 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
1497 mode as a default when STRICT_ALIGNMENT, but not if not. */
1498 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
1500 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
1503 /* For a REG rtx, the decl it is known to refer to, if it is known to
1504 refer to part of a DECL. */
1505 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
1507 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
1509 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
1511 /* Copy the attributes that apply to memory locations from RHS to LHS. */
1512 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
1513 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
1514 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
1515 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
1516 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
1517 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
1518 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
1520 /* 1 if RTX is a label_ref for a nonlocal label. */
1521 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
1522 REG_LABEL_TARGET note. */
1523 #define LABEL_REF_NONLOCAL_P(RTX) \
1524 (RTL_FLAG_CHECK1("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
1526 /* 1 if RTX is a code_label that should always be considered to be needed. */
1527 #define LABEL_PRESERVE_P(RTX) \
1528 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
1530 /* During sched, 1 if RTX is an insn that must be scheduled together
1531 with the preceding insn. */
1532 #define SCHED_GROUP_P(RTX) \
1533 (RTL_FLAG_CHECK4("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
1534 JUMP_INSN, CALL_INSN \
1537 /* For a SET rtx, SET_DEST is the place that is set
1538 and SET_SRC is the value it is set to. */
1539 #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
1540 #define SET_SRC(RTX) XCEXP(RTX, 1, SET)
1541 #define SET_IS_RETURN_P(RTX) \
1542 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump)
1544 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
1545 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
1546 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
1548 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
1549 conditionally executing the code on, COND_EXEC_CODE is the code
1550 to execute if the condition is true. */
1551 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
1552 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
1554 /* 1 if RTX is a symbol_ref that addresses this function's rtl
1556 #define CONSTANT_POOL_ADDRESS_P(RTX) \
1557 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
1559 /* 1 if RTX is a symbol_ref that addresses a value in the file's
1560 tree constant pool. This information is private to varasm.c. */
1561 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
1562 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \
1563 (RTX), SYMBOL_REF)->frame_related)
1565 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
1566 #define SYMBOL_REF_FLAG(RTX) \
1567 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
1569 /* 1 if RTX is a symbol_ref that has been the library function in
1570 emit_library_call. */
1571 #define SYMBOL_REF_USED(RTX) \
1572 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
1574 /* 1 if RTX is a symbol_ref for a weak symbol. */
1575 #define SYMBOL_REF_WEAK(RTX) \
1576 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
1578 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
1579 SYMBOL_REF_CONSTANT. */
1580 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2)
1582 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
1584 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
1585 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL))
1587 /* The tree (decl or constant) associated with the symbol, or null. */
1588 #define SYMBOL_REF_DECL(RTX) \
1589 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2))
1591 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
1592 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
1593 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C))
1595 /* The rtx constant pool entry for a symbol, or null. */
1596 #define SYMBOL_REF_CONSTANT(RTX) \
1597 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL)
1599 /* A set of flags on a symbol_ref that are, in some respects, redundant with
1600 information derivable from the tree decl associated with this symbol.
1601 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
1602 decl. In some cases this is a bug. But beyond that, it's nice to cache
1603 this information to avoid recomputing it. Finally, this allows space for
1604 the target to store more than one bit of information, as with
1606 #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1)
1608 /* These flags are common enough to be defined for all targets. They
1609 are computed by the default version of targetm.encode_section_info. */
1611 /* Set if this symbol is a function. */
1612 #define SYMBOL_FLAG_FUNCTION (1 << 0)
1613 #define SYMBOL_REF_FUNCTION_P(RTX) \
1614 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
1615 /* Set if targetm.binds_local_p is true. */
1616 #define SYMBOL_FLAG_LOCAL (1 << 1)
1617 #define SYMBOL_REF_LOCAL_P(RTX) \
1618 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
1619 /* Set if targetm.in_small_data_p is true. */
1620 #define SYMBOL_FLAG_SMALL (1 << 2)
1621 #define SYMBOL_REF_SMALL_P(RTX) \
1622 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
1623 /* The three-bit field at [5:3] is true for TLS variables; use
1624 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
1625 #define SYMBOL_FLAG_TLS_SHIFT 3
1626 #define SYMBOL_REF_TLS_MODEL(RTX) \
1627 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
1628 /* Set if this symbol is not defined in this translation unit. */
1629 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
1630 #define SYMBOL_REF_EXTERNAL_P(RTX) \
1631 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
1632 /* Set if this symbol has a block_symbol structure associated with it. */
1633 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
1634 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
1635 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
1636 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
1637 SYMBOL_REF_HAS_BLOCK_INFO_P. */
1638 #define SYMBOL_FLAG_ANCHOR (1 << 8)
1639 #define SYMBOL_REF_ANCHOR_P(RTX) \
1640 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
1642 /* Subsequent bits are available for the target to use. */
1643 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
1644 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
1646 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
1647 structure to which the symbol belongs, or NULL if it has not been
1648 assigned a block. */
1649 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
1651 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
1652 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
1653 RTX has not yet been assigned to a block, or it has not been given an
1654 offset within that block. */
1655 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
1657 /* True if RTX is flagged to be a scheduling barrier. */
1658 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
1659 (RTL_FLAG_CHECK1("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
1661 /* Indicate whether the machine has any sort of auto increment addressing.
1662 If not, we can avoid checking for REG_INC notes. */
1664 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
1665 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
1666 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
1667 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
1668 #define AUTO_INC_DEC
1671 /* Define a macro to look for REG_INC notes,
1672 but save time on machines where they never exist. */
1675 #define FIND_REG_INC_NOTE(INSN, REG) \
1676 ((REG) != NULL_RTX && REG_P ((REG)) \
1677 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
1678 : find_reg_note ((INSN), REG_INC, (REG)))
1680 #define FIND_REG_INC_NOTE(INSN, REG) 0
1683 #ifndef HAVE_PRE_INCREMENT
1684 #define HAVE_PRE_INCREMENT 0
1687 #ifndef HAVE_PRE_DECREMENT
1688 #define HAVE_PRE_DECREMENT 0
1691 #ifndef HAVE_POST_INCREMENT
1692 #define HAVE_POST_INCREMENT 0
1695 #ifndef HAVE_POST_DECREMENT
1696 #define HAVE_POST_DECREMENT 0
1699 #ifndef HAVE_POST_MODIFY_DISP
1700 #define HAVE_POST_MODIFY_DISP 0
1703 #ifndef HAVE_POST_MODIFY_REG
1704 #define HAVE_POST_MODIFY_REG 0
1707 #ifndef HAVE_PRE_MODIFY_DISP
1708 #define HAVE_PRE_MODIFY_DISP 0
1711 #ifndef HAVE_PRE_MODIFY_REG
1712 #define HAVE_PRE_MODIFY_REG 0
1716 /* Some architectures do not have complete pre/post increment/decrement
1717 instruction sets, or only move some modes efficiently. These macros
1718 allow us to tune autoincrement generation. */
1720 #ifndef USE_LOAD_POST_INCREMENT
1721 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1724 #ifndef USE_LOAD_POST_DECREMENT
1725 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1728 #ifndef USE_LOAD_PRE_INCREMENT
1729 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1732 #ifndef USE_LOAD_PRE_DECREMENT
1733 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1736 #ifndef USE_STORE_POST_INCREMENT
1737 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1740 #ifndef USE_STORE_POST_DECREMENT
1741 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1744 #ifndef USE_STORE_PRE_INCREMENT
1745 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1748 #ifndef USE_STORE_PRE_DECREMENT
1749 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1752 /* Nonzero when we are generating CONCATs. */
1753 extern int generating_concat_p
;
1755 /* Nonzero when we are expanding trees to RTL. */
1756 extern int currently_expanding_to_rtl
;
1758 /* Generally useful functions. */
1761 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, enum machine_mode
);
1762 extern rtx
plus_constant (enum machine_mode
, rtx
, HOST_WIDE_INT
);
1765 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
1766 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
1768 extern rtvec
rtvec_alloc (int);
1769 extern rtvec
shallow_copy_rtvec (rtvec
);
1770 extern bool shared_const_p (const_rtx
);
1771 extern rtx
copy_rtx (rtx
);
1772 extern void dump_rtx_statistics (void);
1775 extern rtx
copy_rtx_if_shared (rtx
);
1778 extern unsigned int rtx_size (const_rtx
);
1779 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
1780 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
1781 extern int rtx_equal_p (const_rtx
, const_rtx
);
1782 extern hashval_t
iterative_hash_rtx (const_rtx
, hashval_t
);
1785 extern rtvec
gen_rtvec_v (int, rtx
*);
1786 extern rtx
gen_reg_rtx (enum machine_mode
);
1787 extern rtx
gen_rtx_REG_offset (rtx
, enum machine_mode
, unsigned int, int);
1788 extern rtx
gen_reg_rtx_offset (rtx
, enum machine_mode
, int);
1789 extern rtx
gen_reg_rtx_and_attrs (rtx
);
1790 extern rtx
gen_label_rtx (void);
1791 extern rtx
gen_lowpart_common (enum machine_mode
, rtx
);
1794 extern rtx
gen_lowpart_if_possible (enum machine_mode
, rtx
);
1797 extern rtx
gen_highpart (enum machine_mode
, rtx
);
1798 extern rtx
gen_highpart_mode (enum machine_mode
, enum machine_mode
, rtx
);
1799 extern rtx
operand_subword (rtx
, unsigned int, int, enum machine_mode
);
1802 extern rtx
operand_subword_force (rtx
, unsigned int, enum machine_mode
);
1803 extern bool paradoxical_subreg_p (const_rtx
);
1804 extern int subreg_lowpart_p (const_rtx
);
1805 extern unsigned int subreg_lowpart_offset (enum machine_mode
,
1807 extern unsigned int subreg_highpart_offset (enum machine_mode
,
1809 extern int byte_lowpart_offset (enum machine_mode
, enum machine_mode
);
1810 extern rtx
make_safe_from (rtx
, rtx
);
1811 extern rtx
convert_memory_address_addr_space (enum machine_mode
, rtx
,
1813 #define convert_memory_address(to_mode,x) \
1814 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
1815 extern const char *get_insn_name (int);
1816 extern rtx
get_last_insn_anywhere (void);
1817 extern rtx
get_first_nonnote_insn (void);
1818 extern rtx
get_last_nonnote_insn (void);
1819 extern void start_sequence (void);
1820 extern void push_to_sequence (rtx
);
1821 extern void push_to_sequence2 (rtx
, rtx
);
1822 extern void end_sequence (void);
1823 extern double_int
rtx_to_double_int (const_rtx
);
1824 extern rtx
immed_double_int_const (double_int
, enum machine_mode
);
1825 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
1830 extern rtx
lowpart_subreg (enum machine_mode
, rtx
, enum machine_mode
);
1833 extern rtx
force_const_mem (enum machine_mode
, rtx
);
1838 extern rtx
get_pool_constant (rtx
);
1839 extern rtx
get_pool_constant_mark (rtx
, bool *);
1840 extern enum machine_mode
get_pool_mode (const_rtx
);
1841 extern rtx
simplify_subtraction (rtx
);
1842 extern void decide_function_section (tree
);
1845 extern rtx
assign_stack_local (enum machine_mode
, HOST_WIDE_INT
, int);
1846 #define ASLK_REDUCE_ALIGN 1
1847 #define ASLK_RECORD_PAD 2
1848 extern rtx
assign_stack_local_1 (enum machine_mode
, HOST_WIDE_INT
, int, int);
1849 extern rtx
assign_stack_temp (enum machine_mode
, HOST_WIDE_INT
);
1850 extern rtx
assign_stack_temp_for_type (enum machine_mode
, HOST_WIDE_INT
, tree
);
1851 extern rtx
assign_temp (tree
, int, int);
1854 extern rtx
emit_insn_before (rtx
, rtx
);
1855 extern rtx
emit_insn_before_noloc (rtx
, rtx
, basic_block
);
1856 extern rtx
emit_insn_before_setloc (rtx
, rtx
, int);
1857 extern rtx
emit_jump_insn_before (rtx
, rtx
);
1858 extern rtx
emit_jump_insn_before_noloc (rtx
, rtx
);
1859 extern rtx
emit_jump_insn_before_setloc (rtx
, rtx
, int);
1860 extern rtx
emit_call_insn_before (rtx
, rtx
);
1861 extern rtx
emit_call_insn_before_noloc (rtx
, rtx
);
1862 extern rtx
emit_call_insn_before_setloc (rtx
, rtx
, int);
1863 extern rtx
emit_debug_insn_before (rtx
, rtx
);
1864 extern rtx
emit_debug_insn_before_noloc (rtx
, rtx
);
1865 extern rtx
emit_debug_insn_before_setloc (rtx
, rtx
, int);
1866 extern rtx
emit_barrier_before (rtx
);
1867 extern rtx
emit_label_before (rtx
, rtx
);
1868 extern rtx
emit_note_before (enum insn_note
, rtx
);
1869 extern rtx
emit_insn_after (rtx
, rtx
);
1870 extern rtx
emit_insn_after_noloc (rtx
, rtx
, basic_block
);
1871 extern rtx
emit_insn_after_setloc (rtx
, rtx
, int);
1872 extern rtx
emit_jump_insn_after (rtx
, rtx
);
1873 extern rtx
emit_jump_insn_after_noloc (rtx
, rtx
);
1874 extern rtx
emit_jump_insn_after_setloc (rtx
, rtx
, int);
1875 extern rtx
emit_call_insn_after (rtx
, rtx
);
1876 extern rtx
emit_call_insn_after_noloc (rtx
, rtx
);
1877 extern rtx
emit_call_insn_after_setloc (rtx
, rtx
, int);
1878 extern rtx
emit_debug_insn_after (rtx
, rtx
);
1879 extern rtx
emit_debug_insn_after_noloc (rtx
, rtx
);
1880 extern rtx
emit_debug_insn_after_setloc (rtx
, rtx
, int);
1881 extern rtx
emit_barrier_after (rtx
);
1882 extern rtx
emit_label_after (rtx
, rtx
);
1883 extern rtx
emit_note_after (enum insn_note
, rtx
);
1884 extern rtx
emit_insn (rtx
);
1885 extern rtx
emit_debug_insn (rtx
);
1886 extern rtx
emit_jump_insn (rtx
);
1887 extern rtx
emit_call_insn (rtx
);
1888 extern rtx
emit_label (rtx
);
1889 extern rtx
emit_jump_table_data (rtx
);
1890 extern rtx
emit_barrier (void);
1891 extern rtx
emit_note (enum insn_note
);
1892 extern rtx
emit_note_copy (rtx
);
1893 extern rtx
gen_clobber (rtx
);
1894 extern rtx
emit_clobber (rtx
);
1895 extern rtx
gen_use (rtx
);
1896 extern rtx
emit_use (rtx
);
1897 extern rtx
make_insn_raw (rtx
);
1898 extern void add_function_usage_to (rtx
, rtx
);
1899 extern rtx
last_call_insn (void);
1900 extern rtx
previous_insn (rtx
);
1901 extern rtx
next_insn (rtx
);
1902 extern rtx
prev_nonnote_insn (rtx
);
1903 extern rtx
prev_nonnote_insn_bb (rtx
);
1904 extern rtx
next_nonnote_insn (rtx
);
1905 extern rtx
next_nonnote_insn_bb (rtx
);
1906 extern rtx
prev_nondebug_insn (rtx
);
1907 extern rtx
next_nondebug_insn (rtx
);
1908 extern rtx
prev_nonnote_nondebug_insn (rtx
);
1909 extern rtx
next_nonnote_nondebug_insn (rtx
);
1910 extern rtx
prev_real_insn (rtx
);
1911 extern rtx
next_real_insn (rtx
);
1912 extern rtx
prev_active_insn (rtx
);
1913 extern rtx
next_active_insn (rtx
);
1914 extern int active_insn_p (const_rtx
);
1915 extern rtx
next_cc0_user (rtx
);
1916 extern rtx
prev_cc0_setter (rtx
);
1919 extern int insn_line (const_rtx
);
1920 extern const char * insn_file (const_rtx
);
1921 extern tree
insn_scope (const_rtx
);
1922 extern location_t prologue_location
, epilogue_location
;
1925 extern enum rtx_code
reverse_condition (enum rtx_code
);
1926 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
1927 extern enum rtx_code
swap_condition (enum rtx_code
);
1928 extern enum rtx_code
unsigned_condition (enum rtx_code
);
1929 extern enum rtx_code
signed_condition (enum rtx_code
);
1930 extern void mark_jump_label (rtx
, rtx
, int);
1933 extern rtx
delete_related_insns (rtx
);
1936 extern rtx
*find_constant_term_loc (rtx
*);
1939 extern rtx
try_split (rtx
, rtx
, int);
1940 extern int split_branch_probability
;
1942 /* In unknown file */
1943 extern rtx
split_insns (rtx
, rtx
);
1945 /* In simplify-rtx.c */
1946 extern rtx
simplify_const_unary_operation (enum rtx_code
, enum machine_mode
,
1947 rtx
, enum machine_mode
);
1948 extern rtx
simplify_unary_operation (enum rtx_code
, enum machine_mode
, rtx
,
1950 extern rtx
simplify_const_binary_operation (enum rtx_code
, enum machine_mode
,
1952 extern rtx
simplify_binary_operation (enum rtx_code
, enum machine_mode
, rtx
,
1954 extern rtx
simplify_ternary_operation (enum rtx_code
, enum machine_mode
,
1955 enum machine_mode
, rtx
, rtx
, rtx
);
1956 extern rtx
simplify_const_relational_operation (enum rtx_code
,
1957 enum machine_mode
, rtx
, rtx
);
1958 extern rtx
simplify_relational_operation (enum rtx_code
, enum machine_mode
,
1959 enum machine_mode
, rtx
, rtx
);
1960 extern rtx
simplify_gen_binary (enum rtx_code
, enum machine_mode
, rtx
, rtx
);
1961 extern rtx
simplify_gen_unary (enum rtx_code
, enum machine_mode
, rtx
,
1963 extern rtx
simplify_gen_ternary (enum rtx_code
, enum machine_mode
,
1964 enum machine_mode
, rtx
, rtx
, rtx
);
1965 extern rtx
simplify_gen_relational (enum rtx_code
, enum machine_mode
,
1966 enum machine_mode
, rtx
, rtx
);
1967 extern rtx
simplify_subreg (enum machine_mode
, rtx
, enum machine_mode
,
1969 extern rtx
simplify_gen_subreg (enum machine_mode
, rtx
, enum machine_mode
,
1971 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
1972 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
1973 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
1974 extern rtx
simplify_rtx (const_rtx
);
1975 extern rtx
avoid_constant_pool_reference (rtx
);
1976 extern rtx
delegitimize_mem_from_attrs (rtx
);
1977 extern bool mode_signbit_p (enum machine_mode
, const_rtx
);
1978 extern bool val_signbit_p (enum machine_mode
, unsigned HOST_WIDE_INT
);
1979 extern bool val_signbit_known_set_p (enum machine_mode
,
1980 unsigned HOST_WIDE_INT
);
1981 extern bool val_signbit_known_clear_p (enum machine_mode
,
1982 unsigned HOST_WIDE_INT
);
1985 extern enum machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
1989 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
1990 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
1991 extern void set_insn_deleted (rtx
);
1993 /* Functions in rtlanal.c */
1995 /* Single set is implemented as macro for performance reasons. */
1996 #define single_set(I) (INSN_P (I) \
1997 ? (GET_CODE (PATTERN (I)) == SET \
1998 ? PATTERN (I) : single_set_1 (I)) \
2000 #define single_set_1(I) single_set_2 (I, PATTERN (I))
2002 /* Structure used for passing data to REPLACE_LABEL. */
2003 typedef struct replace_label_data
2007 bool update_label_nuses
;
2008 } replace_label_data
;
2010 extern enum machine_mode
get_address_mode (rtx mem
);
2011 extern int rtx_addr_can_trap_p (const_rtx
);
2012 extern bool nonzero_address_p (const_rtx
);
2013 extern int rtx_unstable_p (const_rtx
);
2014 extern bool rtx_varies_p (const_rtx
, bool);
2015 extern bool rtx_addr_varies_p (const_rtx
, bool);
2016 extern rtx
get_call_rtx_from (rtx
);
2017 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2018 extern rtx
get_related_value (const_rtx
);
2019 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2020 extern void split_const (rtx
, rtx
*, rtx
*);
2021 extern bool unsigned_reg_p (rtx
);
2022 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2023 extern int count_occurrences (const_rtx
, const_rtx
, int);
2024 extern int reg_referenced_p (const_rtx
, const_rtx
);
2025 extern int reg_used_between_p (const_rtx
, const_rtx
, const_rtx
);
2026 extern int reg_set_between_p (const_rtx
, const_rtx
, const_rtx
);
2027 extern int commutative_operand_precedence (rtx
);
2028 extern bool swap_commutative_operands_p (rtx
, rtx
);
2029 extern int modified_between_p (const_rtx
, const_rtx
, const_rtx
);
2030 extern int no_labels_between_p (const_rtx
, const_rtx
);
2031 extern int modified_in_p (const_rtx
, const_rtx
);
2032 extern int reg_set_p (const_rtx
, const_rtx
);
2033 extern rtx
single_set_2 (const_rtx
, const_rtx
);
2034 extern int multiple_sets (const_rtx
);
2035 extern int set_noop_p (const_rtx
);
2036 extern int noop_move_p (const_rtx
);
2037 extern rtx
find_last_value (rtx
, rtx
*, rtx
, int);
2038 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2039 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2040 extern const_rtx
set_of (const_rtx
, const_rtx
);
2041 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2042 extern void record_hard_reg_uses (rtx
*, void *);
2044 extern void find_all_hard_reg_sets (const_rtx
, HARD_REG_SET
*);
2046 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2047 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2048 extern int dead_or_set_p (const_rtx
, const_rtx
);
2049 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2050 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2051 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2052 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2053 extern rtx
find_constant_src (const_rtx
);
2054 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2055 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2056 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2057 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2058 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2059 extern void add_shallow_copy_of_reg_note (rtx
, rtx
);
2060 extern void remove_note (rtx
, const_rtx
);
2061 extern void remove_reg_equal_equiv_notes (rtx
);
2062 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2063 extern int side_effects_p (const_rtx
);
2064 extern int volatile_refs_p (const_rtx
);
2065 extern int volatile_insn_p (const_rtx
);
2066 extern int may_trap_p_1 (const_rtx
, unsigned);
2067 extern int may_trap_p (const_rtx
);
2068 extern int may_trap_or_fault_p (const_rtx
);
2069 extern bool can_throw_internal (const_rtx
);
2070 extern bool can_throw_external (const_rtx
);
2071 extern bool insn_could_throw_p (const_rtx
);
2072 extern bool insn_nothrow_p (const_rtx
);
2073 extern bool can_nonlocal_goto (const_rtx
);
2074 extern void copy_reg_eh_region_note_forward (rtx
, rtx
, rtx
);
2075 extern void copy_reg_eh_region_note_backward(rtx
, rtx
, rtx
);
2076 extern int inequality_comparisons_p (const_rtx
);
2077 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2078 extern int replace_label (rtx
*, void *);
2079 extern int rtx_referenced_p (rtx
, rtx
);
2080 extern bool tablejump_p (const_rtx
, rtx
*, rtx
*);
2081 extern int computed_jump_p (const_rtx
);
2083 typedef int (*rtx_function
) (rtx
*, void *);
2084 extern int for_each_rtx (rtx
*, rtx_function
, void *);
2086 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2087 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2088 NULL. The callback is passed the same opaque ARG passed to
2089 for_each_inc_dec. Return zero to continue looking for other
2090 autoinc operations, -1 to skip OP's operands, and any other value
2091 to interrupt the traversal and return that value to the caller of
2092 for_each_inc_dec. */
2093 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
2094 rtx srcoff
, void *arg
);
2095 extern int for_each_inc_dec (rtx
*, for_each_inc_dec_fn
, void *arg
);
2097 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
2099 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
2100 rtx_equal_p_callback_function
);
2102 typedef int (*hash_rtx_callback_function
) (const_rtx
, enum machine_mode
, rtx
*,
2103 enum machine_mode
*);
2104 extern unsigned hash_rtx_cb (const_rtx
, enum machine_mode
, int *, int *,
2105 bool, hash_rtx_callback_function
);
2107 extern rtx
regno_use_in (unsigned int, rtx
);
2108 extern int auto_inc_p (const_rtx
);
2109 extern int in_expr_list_p (const_rtx
, const_rtx
);
2110 extern void remove_node_from_expr_list (const_rtx
, rtx
*);
2111 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
2112 extern rtx
find_first_parameter_load (rtx
, rtx
);
2113 extern bool keep_with_call_p (const_rtx
);
2114 extern bool label_is_jump_target_p (const_rtx
, const_rtx
);
2115 extern int insn_rtx_cost (rtx
, bool);
2117 /* Given an insn and condition, return a canonical description of
2118 the test being made. */
2119 extern rtx
canonicalize_condition (rtx
, rtx
, int, rtx
*, rtx
, int, int);
2121 /* Given a JUMP_INSN, return a canonical description of the test
2123 extern rtx
get_condition (rtx
, rtx
*, int, int);
2125 /* Information about a subreg of a hard register. */
2128 /* Offset of first hard register involved in the subreg. */
2130 /* Number of hard registers involved in the subreg. */
2132 /* Whether this subreg can be represented as a hard reg with the new
2134 bool representable_p
;
2137 extern void subreg_get_info (unsigned int, enum machine_mode
,
2138 unsigned int, enum machine_mode
,
2139 struct subreg_info
*);
2143 extern void free_EXPR_LIST_list (rtx
*);
2144 extern void free_INSN_LIST_list (rtx
*);
2145 extern void free_EXPR_LIST_node (rtx
);
2146 extern void free_INSN_LIST_node (rtx
);
2147 extern rtx
alloc_INSN_LIST (rtx
, rtx
);
2148 extern rtx
copy_INSN_LIST (rtx
);
2149 extern rtx
concat_INSN_LIST (rtx
, rtx
);
2150 extern rtx
alloc_EXPR_LIST (int, rtx
, rtx
);
2151 extern void remove_free_INSN_LIST_elem (rtx
, rtx
*);
2152 extern rtx
remove_list_elem (rtx
, rtx
*);
2153 extern rtx
remove_free_INSN_LIST_node (rtx
*);
2154 extern rtx
remove_free_EXPR_LIST_node (rtx
*);
2159 /* Resize reg info. */
2160 extern bool resize_reg_info (void);
2161 /* Free up register info memory. */
2162 extern void free_reg_info (void);
2163 extern void init_subregs_of_mode (void);
2164 extern void finish_subregs_of_mode (void);
2167 extern rtx
extract_asm_operands (rtx
);
2168 extern int asm_noperands (const_rtx
);
2169 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
2170 enum machine_mode
*, location_t
*);
2172 extern enum reg_class
reg_preferred_class (int);
2173 extern enum reg_class
reg_alternate_class (int);
2174 extern enum reg_class
reg_allocno_class (int);
2175 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
2178 extern void split_all_insns (void);
2179 extern unsigned int split_all_insns_noflow (void);
2181 #define MAX_SAVED_CONST_INT 64
2182 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
2184 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
2185 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
2186 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
2187 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
2188 extern GTY(()) rtx const_true_rtx
;
2190 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
2192 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
2193 same as VOIDmode. */
2195 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
2197 /* Likewise, for the constants 1 and 2 and -1. */
2199 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
2200 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
2201 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
2203 extern GTY(()) rtx pc_rtx
;
2204 extern GTY(()) rtx cc0_rtx
;
2205 extern GTY(()) rtx ret_rtx
;
2206 extern GTY(()) rtx simple_return_rtx
;
2208 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
2209 is used to represent the frame pointer. This is because the
2210 hard frame pointer and the automatic variables are separated by an amount
2211 that cannot be determined until after register allocation. We can assume
2212 that in this case ELIMINABLE_REGS will be defined, one action of which
2213 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
2214 #ifndef HARD_FRAME_POINTER_REGNUM
2215 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
2218 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
2219 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
2220 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
2223 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
2224 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
2225 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
2228 /* Index labels for global_rtl. */
2229 enum global_rtl_index
2233 /* For register elimination to work properly these hard_frame_pointer_rtx,
2234 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
2235 the same register. */
2236 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
2237 GR_ARG_POINTER
= GR_FRAME_POINTER
,
2239 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
2240 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
2242 GR_HARD_FRAME_POINTER
,
2244 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
2245 #if HARD_FRAME_POINTER_IS_ARG_POINTER
2246 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
2251 GR_VIRTUAL_INCOMING_ARGS
,
2252 GR_VIRTUAL_STACK_ARGS
,
2253 GR_VIRTUAL_STACK_DYNAMIC
,
2254 GR_VIRTUAL_OUTGOING_ARGS
,
2256 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
2261 /* Target-dependent globals. */
2262 struct GTY(()) target_rtl
{
2263 /* All references to the hard registers in global_rtl_index go through
2264 these unique rtl objects. On machines where the frame-pointer and
2265 arg-pointer are the same register, they use the same unique object.
2267 After register allocation, other rtl objects which used to be pseudo-regs
2268 may be clobbered to refer to the frame-pointer register.
2269 But references that were originally to the frame-pointer can be
2270 distinguished from the others because they contain frame_pointer_rtx.
2272 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
2273 tricky: until register elimination has taken place hard_frame_pointer_rtx
2274 should be used if it is being set, and frame_pointer_rtx otherwise. After
2275 register elimination hard_frame_pointer_rtx should always be used.
2276 On machines where the two registers are same (most) then these are the
2278 rtx x_global_rtl
[GR_MAX
];
2280 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
2281 rtx x_pic_offset_table_rtx
;
2283 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
2284 This is used to implement __builtin_return_address for some machines;
2285 see for instance the MIPS port. */
2286 rtx x_return_address_pointer_rtx
;
2288 /* Commonly used RTL for hard registers. These objects are not
2289 necessarily unique, so we allocate them separately from global_rtl.
2290 They are initialized once per compilation unit, then copied into
2291 regno_reg_rtx at the beginning of each function. */
2292 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
2294 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
2295 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
2297 /* Static hunks of RTL used by the aliasing code; these are treated
2298 as persistent to avoid unnecessary RTL allocations. */
2299 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
2301 /* The default memory attributes for each mode. */
2302 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
2305 extern GTY(()) struct target_rtl default_target_rtl
;
2306 #if SWITCHABLE_TARGET
2307 extern struct target_rtl
*this_target_rtl
;
2309 #define this_target_rtl (&default_target_rtl)
2312 #define global_rtl \
2313 (this_target_rtl->x_global_rtl)
2314 #define pic_offset_table_rtx \
2315 (this_target_rtl->x_pic_offset_table_rtx)
2316 #define return_address_pointer_rtx \
2317 (this_target_rtl->x_return_address_pointer_rtx)
2318 #define top_of_stack \
2319 (this_target_rtl->x_top_of_stack)
2320 #define mode_mem_attrs \
2321 (this_target_rtl->x_mode_mem_attrs)
2323 /* All references to certain hard regs, except those created
2324 by allocating pseudo regs into them (when that's possible),
2325 go through these unique rtx objects. */
2326 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
2327 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
2328 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
2329 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
2331 #ifndef GENERATOR_FILE
2332 /* Return the attributes of a MEM rtx. */
2333 static inline struct mem_attrs
*
2334 get_mem_attrs (const_rtx x
)
2336 struct mem_attrs
*attrs
;
2338 attrs
= MEM_ATTRS (x
);
2340 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
2345 /* Include the RTL generation functions. */
2347 #ifndef GENERATOR_FILE
2349 #undef gen_rtx_ASM_INPUT
2350 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
2351 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
2352 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
2353 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
2356 /* There are some RTL codes that require special attention; the
2357 generation functions included above do the raw handling. If you
2358 add to this list, modify special_rtx in gengenrtl.c as well. */
2360 extern rtx
gen_rtx_CONST_INT (enum machine_mode
, HOST_WIDE_INT
);
2361 extern rtx
gen_rtx_CONST_VECTOR (enum machine_mode
, rtvec
);
2362 extern rtx
gen_raw_REG (enum machine_mode
, int);
2363 extern rtx
gen_rtx_REG (enum machine_mode
, unsigned);
2364 extern rtx
gen_rtx_SUBREG (enum machine_mode
, rtx
, int);
2365 extern rtx
gen_rtx_MEM (enum machine_mode
, rtx
);
2367 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
2369 /* Virtual registers are used during RTL generation to refer to locations into
2370 the stack frame when the actual location isn't known until RTL generation
2371 is complete. The routine instantiate_virtual_regs replaces these with
2372 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
2375 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
2377 /* This points to the first word of the incoming arguments passed on the stack,
2378 either by the caller or by the callee when pretending it was passed by the
2381 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
2383 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
2385 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
2386 variable on the stack. Otherwise, it points to the first variable on
2389 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
2391 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
2393 /* This points to the location of dynamically-allocated memory on the stack
2394 immediately after the stack pointer has been adjusted by the amount
2397 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
2399 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
2401 /* This points to the location in the stack at which outgoing arguments should
2402 be written when the stack is pre-pushed (arguments pushed using push
2403 insns always use sp). */
2405 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
2407 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
2409 /* This points to the Canonical Frame Address of the function. This
2410 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
2411 but is calculated relative to the arg pointer for simplicity; the
2412 frame pointer nor stack pointer are necessarily fixed relative to
2413 the CFA until after reload. */
2415 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
2417 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
2419 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
2421 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
2424 #define virtual_preferred_stack_boundary_rtx \
2425 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
2427 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
2428 ((FIRST_VIRTUAL_REGISTER) + 5)
2430 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
2432 /* Nonzero if REGNUM is a pointer into the stack frame. */
2433 #define REGNO_PTR_FRAME_P(REGNUM) \
2434 ((REGNUM) == STACK_POINTER_REGNUM \
2435 || (REGNUM) == FRAME_POINTER_REGNUM \
2436 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
2437 || (REGNUM) == ARG_POINTER_REGNUM \
2438 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
2439 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
2441 /* REGNUM never really appearing in the INSN stream. */
2442 #define INVALID_REGNUM (~(unsigned int) 0)
2444 /* REGNUM for which no debug information can be generated. */
2445 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
2447 extern rtx
output_constant_def (tree
, int);
2448 extern rtx
lookup_constant_def (tree
);
2450 /* Nonzero after end of reload pass.
2451 Set to 1 or 0 by reload1.c. */
2453 extern int reload_completed
;
2455 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
2456 extern int epilogue_completed
;
2458 /* Set to 1 while reload_as_needed is operating.
2459 Required by some machines to handle any generated moves differently. */
2461 extern int reload_in_progress
;
2463 /* Set to 1 while in lra. */
2464 extern int lra_in_progress
;
2466 /* This macro indicates whether you may create a new
2469 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
2472 /* Nonzero after end of regstack pass.
2473 Set to 1 or 0 by reg-stack.c. */
2474 extern int regstack_completed
;
2477 /* If this is nonzero, we do not bother generating VOLATILE
2478 around volatile memory references, and we are willing to
2479 output indirect addresses. If cse is to follow, we reject
2480 indirect addresses so a useful potential cse is generated;
2481 if it is used only once, instruction combination will produce
2482 the same indirect address eventually. */
2483 extern int cse_not_expected
;
2485 /* Translates rtx code to tree code, for those codes needed by
2486 REAL_ARITHMETIC. The function returns an int because the caller may not
2487 know what `enum tree_code' means. */
2489 extern int rtx_to_tree_code (enum rtx_code
);
2492 extern int delete_trivially_dead_insns (rtx
, int);
2493 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
2494 extern unsigned hash_rtx (const_rtx x
, enum machine_mode
, int *, int *, bool);
2497 extern bool check_for_inc_dec (rtx insn
);
2500 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
2501 extern bool jump_to_label_p (rtx
);
2502 extern int condjump_p (const_rtx
);
2503 extern int any_condjump_p (const_rtx
);
2504 extern int any_uncondjump_p (const_rtx
);
2505 extern rtx
pc_set (const_rtx
);
2506 extern rtx
condjump_label (const_rtx
);
2507 extern int simplejump_p (const_rtx
);
2508 extern int returnjump_p (rtx
);
2509 extern int eh_returnjump_p (rtx
);
2510 extern int onlyjump_p (const_rtx
);
2511 extern int only_sets_cc0_p (const_rtx
);
2512 extern int sets_cc0_p (const_rtx
);
2513 extern int invert_jump_1 (rtx
, rtx
);
2514 extern int invert_jump (rtx
, rtx
, int);
2515 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
2516 extern int true_regnum (const_rtx
);
2517 extern unsigned int reg_or_subregno (const_rtx
);
2518 extern int redirect_jump_1 (rtx
, rtx
);
2519 extern void redirect_jump_2 (rtx
, rtx
, rtx
, int, int);
2520 extern int redirect_jump (rtx
, rtx
, int);
2521 extern void rebuild_jump_labels (rtx
);
2522 extern void rebuild_jump_labels_chain (rtx
);
2523 extern rtx
reversed_comparison (const_rtx
, enum machine_mode
);
2524 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
2525 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
2526 const_rtx
, const_rtx
);
2527 extern void delete_for_peephole (rtx
, rtx
);
2528 extern int condjump_in_parallel_p (const_rtx
);
2530 /* In emit-rtl.c. */
2531 extern int max_reg_num (void);
2532 extern int max_label_num (void);
2533 extern int get_first_label_num (void);
2534 extern void maybe_set_first_label_num (rtx
);
2535 extern void delete_insns_since (rtx
);
2536 extern void mark_reg_pointer (rtx
, int);
2537 extern void mark_user_reg (rtx
);
2538 extern void reset_used_flags (rtx
);
2539 extern void set_used_flags (rtx
);
2540 extern void reorder_insns (rtx
, rtx
, rtx
);
2541 extern void reorder_insns_nobb (rtx
, rtx
, rtx
);
2542 extern int get_max_insn_count (void);
2543 extern int in_sequence_p (void);
2544 extern void init_emit (void);
2545 extern void init_emit_regs (void);
2546 extern void init_emit_once (void);
2547 extern void push_topmost_sequence (void);
2548 extern void pop_topmost_sequence (void);
2549 extern void set_new_first_and_last_insn (rtx
, rtx
);
2550 extern unsigned int unshare_all_rtl (void);
2551 extern void unshare_all_rtl_again (rtx
);
2552 extern void unshare_all_rtl_in_chain (rtx
);
2553 extern void verify_rtl_sharing (void);
2554 extern void add_insn (rtx
);
2555 extern void add_insn_before (rtx
, rtx
, basic_block
);
2556 extern void add_insn_after (rtx
, rtx
, basic_block
);
2557 extern void remove_insn (rtx
);
2558 extern rtx
emit (rtx
);
2559 extern void delete_insn (rtx
);
2560 extern rtx
entry_of_function (void);
2561 extern void emit_insn_at_entry (rtx
);
2562 extern void delete_insn_chain (rtx
, rtx
, bool);
2563 extern rtx
unlink_insn_chain (rtx
, rtx
);
2564 extern void delete_insn_and_edges (rtx
);
2565 extern rtx
gen_lowpart_SUBREG (enum machine_mode
, rtx
);
2566 extern rtx
gen_const_mem (enum machine_mode
, rtx
);
2567 extern rtx
gen_frame_mem (enum machine_mode
, rtx
);
2568 extern rtx
gen_tmp_stack_mem (enum machine_mode
, rtx
);
2569 extern bool validate_subreg (enum machine_mode
, enum machine_mode
,
2570 const_rtx
, unsigned int);
2573 extern unsigned int extended_count (const_rtx
, enum machine_mode
, int);
2574 extern rtx
remove_death (unsigned int, rtx
);
2575 extern void dump_combine_stats (FILE *);
2576 extern void dump_combine_total_stats (FILE *);
2577 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
2579 /* In cfgcleanup.c */
2580 extern void delete_dead_jumptables (void);
2582 /* In sched-rgn.c. */
2583 extern void schedule_insns (void);
2585 /* In sched-ebb.c. */
2586 extern void schedule_ebbs (void);
2588 /* In sel-sched-dump.c. */
2589 extern void sel_sched_fix_param (const char *param
, const char *val
);
2591 /* In print-rtl.c */
2592 extern const char *print_rtx_head
;
2593 extern void debug (const rtx_def
&ref
);
2594 extern void debug (const rtx_def
*ptr
);
2595 extern void debug_rtx (const_rtx
);
2596 extern void debug_rtx_list (const_rtx
, int);
2597 extern void debug_rtx_range (const_rtx
, const_rtx
);
2598 extern const_rtx
debug_rtx_find (const_rtx
, int);
2599 extern void print_mem_expr (FILE *, const_tree
);
2600 extern void print_rtl (FILE *, const_rtx
);
2601 extern void print_simple_rtl (FILE *, const_rtx
);
2602 extern int print_rtl_single (FILE *, const_rtx
);
2603 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
2604 extern void print_inline_rtx (FILE *, const_rtx
, int);
2606 /* Functions in sched-vis.c. FIXME: Ideally these functions would
2607 not be in sched-vis.c but in rtl.c, because they are not only used
2608 by the scheduler anymore but for all "slim" RTL dumping. */
2609 extern void dump_value_slim (FILE *, const_rtx
, int);
2610 extern void dump_insn_slim (FILE *, const_rtx
);
2611 extern void dump_rtl_slim (FILE *, const_rtx
, const_rtx
, int, int);
2612 extern void print_value (pretty_printer
*, const_rtx
, int);
2613 extern void print_pattern (pretty_printer
*, const_rtx
, int);
2614 extern void print_insn (pretty_printer
*, const_rtx
, int);
2615 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
2616 extern const char *str_pattern_slim (const_rtx
);
2619 extern void reposition_prologue_and_epilogue_notes (void);
2620 extern int prologue_epilogue_contains (const_rtx
);
2621 extern int sibcall_epilogue_contains (const_rtx
);
2622 extern void update_temp_slot_address (rtx
, rtx
);
2623 extern void maybe_copy_prologue_epilogue_insn (rtx
, rtx
);
2624 extern void set_return_jump_label (rtx
);
2627 extern void expand_null_return (void);
2628 extern void expand_naked_return (void);
2629 extern void emit_jump (rtx
);
2632 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
2634 extern HOST_WIDE_INT
find_args_size_adjust (rtx
);
2635 extern int fixup_args_size_notes (rtx
, rtx
, int);
2638 extern void print_rtl_with_bb (FILE *, const_rtx
, int);
2639 extern rtx
duplicate_insn_chain (rtx
, rtx
);
2642 extern void init_expmed (void);
2643 extern void expand_inc (rtx
, rtx
);
2644 extern void expand_dec (rtx
, rtx
);
2646 /* In lower-subreg.c */
2647 extern void init_lower_subreg (void);
2650 extern bool can_copy_p (enum machine_mode
);
2651 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
2652 extern rtx
fis_get_condition (rtx
);
2656 extern HARD_REG_SET eliminable_regset
;
2658 extern void mark_elimination (int, int);
2661 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
2662 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
2663 extern void globalize_reg (tree
, int);
2664 extern void init_reg_modes_target (void);
2665 extern void init_regs (void);
2666 extern void reinit_regs (void);
2667 extern void init_fake_stack_mems (void);
2668 extern void save_register_info (void);
2669 extern void init_reg_sets (void);
2670 extern void regclass (rtx
, int);
2671 extern void reg_scan (rtx
, unsigned int);
2672 extern void fix_register (const char *, int, int);
2673 extern bool invalid_mode_change_p (unsigned int, enum reg_class
);
2676 extern int function_invariant_p (const_rtx
);
2686 LCT_RETURNS_TWICE
= 5
2689 extern void emit_library_call (rtx
, enum libcall_type
, enum machine_mode
, int,
2691 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
2692 enum machine_mode
, int, ...);
2695 extern void init_varasm_once (void);
2697 extern rtx
make_debug_expr_from_rtl (const_rtx
);
2700 extern bool read_rtx (const char *, rtx
*);
2703 extern rtx
canon_rtx (rtx
);
2704 extern int true_dependence (const_rtx
, enum machine_mode
, const_rtx
);
2705 extern rtx
get_addr (rtx
);
2706 extern int canon_true_dependence (const_rtx
, enum machine_mode
, rtx
,
2708 extern int read_dependence (const_rtx
, const_rtx
);
2709 extern int anti_dependence (const_rtx
, const_rtx
);
2710 extern int canon_anti_dependence (const_rtx
, bool,
2711 const_rtx
, enum machine_mode
, rtx
);
2712 extern int output_dependence (const_rtx
, const_rtx
);
2713 extern int may_alias_p (const_rtx
, const_rtx
);
2714 extern void init_alias_target (void);
2715 extern void init_alias_analysis (void);
2716 extern void end_alias_analysis (void);
2717 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
2718 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
2719 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
2720 extern bool may_be_sp_based_p (rtx
);
2721 extern rtx
gen_hard_reg_clobber (enum machine_mode
, unsigned int);
2722 extern rtx
get_reg_known_value (unsigned int);
2723 extern bool get_reg_known_equiv_p (unsigned int);
2724 extern rtx
get_reg_base_value (unsigned int);
2727 extern int stack_regs_mentioned (const_rtx insn
);
2731 extern GTY(()) rtx stack_limit_rtx
;
2734 extern void invert_br_probabilities (rtx
);
2735 extern bool expensive_function_p (int);
2737 /* In var-tracking.c */
2738 extern unsigned int variable_tracking_main (void);
2740 /* In stor-layout.c. */
2741 extern void get_mode_bounds (enum machine_mode
, int, enum machine_mode
,
2744 /* In loop-unswitch.c */
2745 extern rtx
reversed_condition (rtx
);
2746 extern rtx
compare_and_jump_seq (rtx
, rtx
, enum rtx_code
, rtx
, int, rtx
);
2749 extern rtx
canon_condition (rtx
);
2750 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
2753 extern unsigned int compute_alignments (void);
2754 extern void update_alignments (vec
<rtx
> &);
2755 extern int asm_str_count (const char *templ
);
2759 rtx (*gen_lowpart
) (enum machine_mode
, rtx
);
2760 rtx (*gen_lowpart_no_emit
) (enum machine_mode
, rtx
);
2761 rtx (*reg_nonzero_bits
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
2762 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
2763 rtx (*reg_num_sign_bit_copies
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
2764 unsigned int, unsigned int *);
2765 bool (*reg_truncated_to_mode
) (enum machine_mode
, const_rtx
);
2767 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
2770 /* Each pass can provide its own. */
2771 extern struct rtl_hooks rtl_hooks
;
2773 /* ... but then it has to restore these. */
2774 extern const struct rtl_hooks general_rtl_hooks
;
2776 /* Keep this for the nonce. */
2777 #define gen_lowpart rtl_hooks.gen_lowpart
2779 extern void insn_locations_init (void);
2780 extern void insn_locations_finalize (void);
2781 extern void set_curr_insn_location (location_t
);
2782 extern location_t
curr_insn_location (void);
2783 extern bool optimize_insn_for_size_p (void);
2784 extern bool optimize_insn_for_speed_p (void);
2787 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
2789 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
2792 #define fatal_insn(msgid, insn) \
2793 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
2794 #define fatal_insn_not_found(insn) \
2795 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
2799 #endif /* ! GCC_RTL_H */