1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
25 #include "statistics.h"
30 #include "fixed-value.h"
33 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */
34 #undef FLOAT /* Likewise. */
35 #undef ABS /* Likewise. */
36 #undef PC /* Likewise. */
38 /* Value used by some passes to "recognize" noop moves as valid
40 #define NOOP_MOVE_INSN_CODE INT_MAX
42 /* Register Transfer Language EXPRESSIONS CODES */
44 #define RTX_CODE enum rtx_code
47 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
48 #include "rtl.def" /* rtl expressions are documented here */
51 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
53 Assumes default enum value assignment. */
55 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
56 /* The cast here, saves many elsewhere. */
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. If any element is nonzero, it means
138 the value of the corresponding attribute is unknown. */
139 /* ALIGN and SIZE are the alignment and size of the MEM itself,
140 while EXPR can describe a larger underlying object, which might have a
141 stricter alignment; OFFSET is the offset of the MEM within that object. */
142 typedef struct mem_attrs
GTY(())
144 alias_set_type alias
; /* Memory alias set. */
145 tree expr
; /* expr corresponding to MEM. */
146 rtx offset
; /* Offset from start of DECL, as CONST_INT. */
147 rtx size
; /* Size in bytes, as a CONST_INT. */
148 unsigned int align
; /* Alignment of MEM in bits. */
151 /* Structure used to describe the attributes of a REG in similar way as
152 mem_attrs does for MEM above. */
154 typedef struct reg_attrs
GTY(())
156 tree decl
; /* decl corresponding to REG. */
157 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
160 /* Common union for an element of an rtx. */
165 unsigned int rt_uint
;
169 enum machine_mode rt_type
;
170 addr_diff_vec_flags rt_addr_diff_vec_flags
;
171 struct cselib_val_struct
*rt_cselib
;
172 struct bitmap_head_def
*rt_bit
;
174 struct basic_block_def
*rt_bb
;
177 struct constant_descriptor_rtx
*rt_constant
;
179 typedef union rtunion_def rtunion
;
181 /* This structure remembers the position of a SYMBOL_REF within an
182 object_block structure. A SYMBOL_REF only provides this information
183 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
184 struct block_symbol
GTY(()) {
185 /* The usual SYMBOL_REF fields. */
186 rtunion
GTY ((skip
)) fld
[3];
188 /* The block that contains this object. */
189 struct object_block
*block
;
191 /* The offset of this object from the start of its block. It is negative
192 if the symbol has not yet been assigned an offset. */
193 HOST_WIDE_INT offset
;
197 DEF_VEC_ALLOC_P(rtx
,heap
);
198 DEF_VEC_ALLOC_P(rtx
,gc
);
200 /* Describes a group of objects that are to be placed together in such
201 a way that their relative positions are known. */
202 struct object_block
GTY(())
204 /* The section in which these objects should be placed. */
207 /* The alignment of the first object, measured in bits. */
208 unsigned int alignment
;
210 /* The total size of the objects, measured in bytes. */
213 /* The SYMBOL_REFs for each object. The vector is sorted in
214 order of increasing offset and the following conditions will
215 hold for each element X:
217 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
218 !SYMBOL_REF_ANCHOR_P (X)
219 SYMBOL_REF_BLOCK (X) == [address of this structure]
220 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
221 VEC(rtx
,gc
) *objects
;
223 /* All the anchor SYMBOL_REFs used to address these objects, sorted
224 in order of increasing offset, and then increasing TLS model.
225 The following conditions will hold for each element X in this vector:
227 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
228 SYMBOL_REF_ANCHOR_P (X)
229 SYMBOL_REF_BLOCK (X) == [address of this structure]
230 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
231 VEC(rtx
,gc
) *anchors
;
234 /* RTL expression ("rtx"). */
236 struct rtx_def
GTY((chain_next ("RTX_NEXT (&%h)"),
237 chain_prev ("RTX_PREV (&%h)")))
239 /* The kind of expression this is. */
240 ENUM_BITFIELD(rtx_code
) code
: 16;
242 /* The kind of value the expression has. */
243 ENUM_BITFIELD(machine_mode
) mode
: 8;
245 /* 1 in a MEM if we should keep the alias set for this mem unchanged
246 when we access a component.
247 1 in a CALL_INSN if it is a sibling call.
248 1 in a SET that is for a return.
249 In a CODE_LABEL, part of the two-bit alternate entry field. */
250 unsigned int jump
: 1;
251 /* In a CODE_LABEL, part of the two-bit alternate entry field.
252 1 in a MEM if it cannot trap. */
253 unsigned int call
: 1;
254 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
255 1 in a SUBREG if it references an unsigned object whose mode has been
256 from a promoted to a wider mode.
257 1 in a SYMBOL_REF if it addresses something in the per-function
259 1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call.
260 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */
261 unsigned int unchanging
: 1;
262 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
263 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
264 if it has been deleted.
265 1 in a REG expression if corresponds to a variable declared by the user,
266 0 for an internally generated temporary.
267 1 in a SUBREG with a negative value.
268 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
270 In a SYMBOL_REF, this flag is used for machine-specific purposes. */
271 unsigned int volatil
: 1;
272 /* 1 in a MEM referring to a field of an aggregate.
273 0 if the MEM was a variable or the result of a * operator in C;
274 1 if it was the result of a . or -> operator (on a struct) in C.
275 1 in a REG if the register is used only in exit code a loop.
276 1 in a SUBREG expression if was generated from a variable with a
278 1 in a CODE_LABEL if the label is used for nonlocal gotos
279 and must not be deleted even if its count is zero.
280 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
281 together with the preceding insn. Valid only within sched.
282 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
283 from the target of a branch. Valid from reorg until end of compilation;
284 cleared before used. */
285 unsigned int in_struct
: 1;
286 /* At the end of RTL generation, 1 if this rtx is used. This is used for
287 copying shared structure. See `unshare_all_rtl'.
288 In a REG, this is not needed for that purpose, and used instead
289 in `leaf_renumber_regs_insn'.
290 1 in a SYMBOL_REF, means that emit_library_call
291 has used it as the function. */
292 unsigned int used
: 1;
293 /* 1 in an INSN or a SET if this rtx is related to the call frame,
294 either changing how we compute the frame address or saving and
295 restoring registers in the prologue and epilogue.
296 1 in a REG or MEM if it is a pointer.
297 1 in a SYMBOL_REF if it addresses something in the per-function
298 constant string pool. */
299 unsigned frame_related
: 1;
300 /* 1 in a REG or PARALLEL that is the current function's return value.
301 1 in a MEM if it refers to a scalar.
302 1 in a SYMBOL_REF for a weak symbol. */
303 unsigned return_val
: 1;
305 /* The first element of the operands of this rtx.
306 The number of operands and their types are controlled
307 by the `code' field, according to rtl.def. */
310 HOST_WIDE_INT hwint
[1];
311 struct block_symbol block_sym
;
312 struct real_value rv
;
313 struct fixed_value fv
;
314 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
317 /* The size in bytes of an rtx header (code, mode and flags). */
318 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
320 /* The size in bytes of an rtx with code CODE. */
321 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
323 #define NULL_RTX (rtx) 0
325 /* The "next" and "previous" RTX, relative to this one. */
327 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
328 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
330 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
332 #define RTX_PREV(X) ((INSN_P (X) \
336 && PREV_INSN (X) != NULL \
337 && NEXT_INSN (PREV_INSN (X)) == X \
338 ? PREV_INSN (X) : NULL)
340 /* Define macros to access the `code' field of the rtx. */
342 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
343 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
345 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
346 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
348 /* RTL vector. These appear inside RTX's when there is a need
349 for a variable number of things. The principle use is inside
350 PARALLEL expressions. */
352 struct rtvec_def
GTY(()) {
353 int num_elem
; /* number of elements */
354 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
357 #define NULL_RTVEC (rtvec) 0
359 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
360 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
362 /* Predicate yielding nonzero iff X is an rtx for a register. */
363 #define REG_P(X) (GET_CODE (X) == REG)
365 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
366 #define MEM_P(X) (GET_CODE (X) == MEM)
368 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
369 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
371 /* Predicate yielding nonzero iff X is a label insn. */
372 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
374 /* Predicate yielding nonzero iff X is a jump insn. */
375 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
377 /* Predicate yielding nonzero iff X is a call insn. */
378 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
380 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
381 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
383 /* Predicate yielding nonzero iff X is a real insn. */
385 (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))
387 /* Predicate yielding nonzero iff X is a note insn. */
388 #define NOTE_P(X) (GET_CODE (X) == NOTE)
390 /* Predicate yielding nonzero iff X is a barrier insn. */
391 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
393 /* Predicate yielding nonzero iff X is a data for a jump table. */
394 #define JUMP_TABLE_DATA_P(INSN) \
395 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \
396 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC))
398 /* 1 if X is a unary operator. */
401 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
403 /* 1 if X is a binary operator. */
405 #define BINARY_P(X) \
406 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
408 /* 1 if X is an arithmetic operator. */
410 #define ARITHMETIC_P(X) \
411 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
412 == RTX_ARITHMETIC_RESULT)
414 /* 1 if X is an arithmetic operator. */
416 #define COMMUTATIVE_ARITH_P(X) \
417 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
419 /* 1 if X is a commutative arithmetic operator or a comparison operator.
420 These two are sometimes selected together because it is possible to
421 swap the two operands. */
423 #define SWAPPABLE_OPERANDS_P(X) \
424 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
425 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
426 | (1 << RTX_COMPARE)))
428 /* 1 if X is a non-commutative operator. */
430 #define NON_COMMUTATIVE_P(X) \
431 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
432 == RTX_NON_COMMUTATIVE_RESULT)
434 /* 1 if X is a commutative operator on integers. */
436 #define COMMUTATIVE_P(X) \
437 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
438 == RTX_COMMUTATIVE_RESULT)
440 /* 1 if X is a relational operator. */
442 #define COMPARISON_P(X) \
443 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
445 /* 1 if X is a constant value that is an integer. */
447 #define CONSTANT_P(X) \
448 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
450 /* 1 if X can be used to represent an object. */
451 #define OBJECT_P(X) \
452 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
454 /* General accessor macros for accessing the fields of an rtx. */
456 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
457 /* The bit with a star outside the statement expr and an & inside is
458 so that N can be evaluated only once. */
459 #define RTL_CHECK1(RTX, N, C1) __extension__ \
460 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
461 const enum rtx_code _code = GET_CODE (_rtx); \
462 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
463 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
465 if (GET_RTX_FORMAT(_code)[_n] != C1) \
466 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
468 &_rtx->u.fld[_n]; }))
470 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
471 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
472 const enum rtx_code _code = GET_CODE (_rtx); \
473 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
474 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
476 if (GET_RTX_FORMAT(_code)[_n] != C1 \
477 && GET_RTX_FORMAT(_code)[_n] != C2) \
478 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
480 &_rtx->u.fld[_n]; }))
482 #define RTL_CHECKC1(RTX, N, C) __extension__ \
483 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
484 if (GET_CODE (_rtx) != (C)) \
485 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
487 &_rtx->u.fld[_n]; }))
489 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
490 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
491 const enum rtx_code _code = GET_CODE (_rtx); \
492 if (_code != (C1) && _code != (C2)) \
493 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
495 &_rtx->u.fld[_n]; }))
497 #define RTVEC_ELT(RTVEC, I) __extension__ \
498 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
499 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
500 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
502 &_rtvec->elem[_i]; }))
504 #define XWINT(RTX, N) __extension__ \
505 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
506 const enum rtx_code _code = GET_CODE (_rtx); \
507 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
508 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
510 if (GET_RTX_FORMAT(_code)[_n] != 'w') \
511 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
513 &_rtx->u.hwint[_n]; }))
515 #define XCWINT(RTX, N, C) __extension__ \
516 (*({ __typeof (RTX) const _rtx = (RTX); \
517 if (GET_CODE (_rtx) != (C)) \
518 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
520 &_rtx->u.hwint[N]; }))
522 #define XCMWINT(RTX, N, C, M) __extension__ \
523 (*({ __typeof (RTX) const _rtx = (RTX); \
524 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
525 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
526 __LINE__, __FUNCTION__); \
527 &_rtx->u.hwint[N]; }))
529 #define XCNMPRV(RTX, C, M) __extension__ \
530 ({ __typeof (RTX) const _rtx = (RTX); \
531 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
532 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
533 __LINE__, __FUNCTION__); \
536 #define XCNMPFV(RTX, C, M) __extension__ \
537 ({ __typeof (RTX) const _rtx = (RTX); \
538 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
539 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
540 __LINE__, __FUNCTION__); \
543 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
544 ({ __typeof (RTX) const _symbol = (RTX); \
545 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \
546 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
547 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
549 &_symbol->u.block_sym; })
551 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
554 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
557 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
560 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
563 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
564 const char *, int, const char *)
566 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, enum machine_mode
,
567 bool, const char *, int, const char *)
569 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
571 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
575 #else /* not ENABLE_RTL_CHECKING */
577 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
578 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
579 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
580 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
581 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
582 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
583 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
584 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
585 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
586 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
587 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
588 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
592 /* General accessor macros for accessing the flags of an rtx. */
594 /* Access an individual rtx flag, with no checking of any kind. */
595 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
597 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
598 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
599 ({ __typeof (RTX) const _rtx = (RTX); \
600 if (GET_CODE(_rtx) != C1) \
601 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
605 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
606 ({ __typeof (RTX) const _rtx = (RTX); \
607 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \
608 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
612 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
613 ({ __typeof (RTX) const _rtx = (RTX); \
614 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
615 && GET_CODE(_rtx) != C3) \
616 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
620 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
621 ({ __typeof (RTX) const _rtx = (RTX); \
622 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
623 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \
624 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
628 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
629 ({ __typeof (RTX) const _rtx = (RTX); \
630 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
631 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
632 && GET_CODE(_rtx) != C5) \
633 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
637 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
639 ({ __typeof (RTX) const _rtx = (RTX); \
640 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
641 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
642 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \
643 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
647 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
649 ({ __typeof (RTX) const _rtx = (RTX); \
650 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
651 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
652 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
653 && GET_CODE(_rtx) != C7) \
654 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
658 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \
660 ({ __typeof (RTX) const _rtx = (RTX); \
661 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
662 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
663 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
664 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \
665 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
669 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
674 #else /* not ENABLE_RTL_FLAG_CHECKING */
676 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
677 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
678 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
679 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
680 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
681 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
682 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
683 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX)
686 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
687 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
688 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
689 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
690 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
691 #define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rt_bit)
692 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
693 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
694 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
696 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
697 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
699 /* These are like XINT, etc. except that they expect a '0' field instead
700 of the normal type code. */
702 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
703 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
704 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
705 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
706 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
707 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
708 #define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bit)
709 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
710 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
711 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
712 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
713 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
714 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
715 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
717 /* Access a '0' field with any type. */
718 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
720 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
721 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
722 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
723 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
724 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
725 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
726 #define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit)
727 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
728 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
729 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
731 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
732 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
734 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
736 /* ACCESS MACROS for particular fields of insns. */
738 /* Holds a unique number for each insn.
739 These are not necessarily sequentially increasing. */
740 #define INSN_UID(INSN) XINT (INSN, 0)
742 /* Chain insns together in sequence. */
743 #define PREV_INSN(INSN) XEXP (INSN, 1)
744 #define NEXT_INSN(INSN) XEXP (INSN, 2)
746 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3)
747 #define INSN_LOCATOR(INSN) XINT (INSN, 4)
748 /* The body of an insn. */
749 #define PATTERN(INSN) XEXP (INSN, 5)
751 /* Code number of instruction, from when it was recognized.
752 -1 means this instruction has not been recognized yet. */
753 #define INSN_CODE(INSN) XINT (INSN, 6)
755 #define RTX_FRAME_RELATED_P(RTX) \
756 (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \
757 JUMP_INSN, BARRIER, SET)->frame_related)
759 /* 1 if RTX is an insn that has been deleted. */
760 #define INSN_DELETED_P(RTX) \
761 (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \
762 CODE_LABEL, BARRIER, NOTE)->volatil)
764 /* 1 if RTX is a call to a const or pure function. */
765 #define CONST_OR_PURE_CALL_P(RTX) \
766 (RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE, \
767 EXPR_LIST)->unchanging)
769 /* 1 if RTX is a call_insn for a sibling call. */
770 #define SIBLING_CALL_P(RTX) \
771 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
773 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
774 #define INSN_ANNULLED_BRANCH_P(RTX) \
775 (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)
777 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
778 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
779 executed if the branch is taken. For annulled branches with this bit
780 clear, the insn should be executed only if the branch is not taken. */
781 #define INSN_FROM_TARGET_P(RTX) \
782 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)
784 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
785 See the comments for ADDR_DIFF_VEC in rtl.def. */
786 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
788 /* In a VALUE, the value cselib has assigned to RTX.
789 This is a "struct cselib_val_struct", see cselib.h. */
790 #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
792 /* Holds a list of notes on what this insn does to various REGs.
793 It is a chain of EXPR_LIST rtx's, where the second operand is the
794 chain pointer and the first operand is the REG being described.
795 The mode field of the EXPR_LIST contains not a real machine mode
796 but a value from enum reg_note. */
797 #define REG_NOTES(INSN) XEXP(INSN, 7)
801 #define DEF_REG_NOTE(NAME) NAME,
802 #include "reg-notes.def"
807 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
808 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
809 #define PUT_REG_NOTE_KIND(LINK, KIND) \
810 PUT_MODE (LINK, (enum machine_mode) (KIND))
812 /* Names for REG_NOTE's in EXPR_LIST insn's. */
814 extern const char * const reg_note_name
[];
815 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
817 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
818 USE and CLOBBER expressions.
819 USE expressions list the registers filled with arguments that
820 are passed to the function.
821 CLOBBER expressions document the registers explicitly clobbered
823 Pseudo registers can not be mentioned in this list. */
824 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8)
826 /* The label-number of a code-label. The assembler label
827 is made from `L' and the label-number printed in decimal.
828 Label numbers are unique in a compilation. */
829 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6)
831 /* In a NOTE that is a line number, this is a string for the file name that the
832 line is in. We use the same field to record block numbers temporarily in
833 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
834 between ints and pointers if we use a different macro for the block number.)
838 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE)
839 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE)
840 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
841 #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE)
842 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
843 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
844 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE)
846 /* In a NOTE that is a line number, this is the line number.
847 Other kinds of NOTEs are identified by negative numbers here. */
848 #define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE)
850 /* Nonzero if INSN is a note marking the beginning of a basic block. */
851 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
852 (GET_CODE (INSN) == NOTE \
853 && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
855 /* Variable declaration and the location of a variable. */
856 #define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \
858 #define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \
861 /* Initialization status of the variable in the location. Status
862 can be unknown, uninitialized or initialized. See enumeration
864 #define NOTE_VAR_LOCATION_STATUS(INSN) (XCINT (XCEXP (INSN, 4, NOTE), \
867 /* Possible initialization status of a variable. When requested
868 by the user, this information is tracked and recorded in the DWARF
869 debug information, along with the variable's location. */
872 VAR_INIT_STATUS_UNKNOWN
,
873 VAR_INIT_STATUS_UNINITIALIZED
,
874 VAR_INIT_STATUS_INITIALIZED
877 /* Codes that appear in the NOTE_KIND field for kinds of notes
878 that are not line numbers. These codes are all negative.
880 Notice that we do not try to use zero here for any of
881 the special note codes because sometimes the source line
882 actually can be zero! This happens (for example) when we
883 are generating code for the per-translation-unit constructor
884 and destructor routines for some C++ translation unit. */
888 #define DEF_INSN_NOTE(NAME) NAME,
889 #include "insn-notes.def"
895 /* Names for NOTE insn's other than line numbers. */
897 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
898 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
899 (note_insn_name[(NOTE_CODE)])
901 /* The name of a label, in case it corresponds to an explicit label
902 in the input source code. */
903 #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL)
905 /* In jump.c, each label contains a count of the number
906 of LABEL_REFs that point at it, so unused labels can be deleted. */
907 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
909 /* Labels carry a two-bit field composed of the ->jump and ->call
910 bits. This field indicates whether the label is an alternate
911 entry point, and if so, what kind. */
914 LABEL_NORMAL
= 0, /* ordinary label */
915 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
916 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
917 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
920 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
922 /* Retrieve the kind of LABEL. */
923 #define LABEL_KIND(LABEL) __extension__ \
924 ({ __typeof (LABEL) const _label = (LABEL); \
925 if (GET_CODE (_label) != CODE_LABEL) \
926 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
928 (enum label_kind) ((_label->jump << 1) | _label->call); })
930 /* Set the kind of LABEL. */
931 #define SET_LABEL_KIND(LABEL, KIND) do { \
932 __typeof (LABEL) const _label = (LABEL); \
933 const unsigned int _kind = (KIND); \
934 if (GET_CODE (_label) != CODE_LABEL) \
935 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
937 _label->jump = ((_kind >> 1) & 1); \
938 _label->call = (_kind & 1); \
943 /* Retrieve the kind of LABEL. */
944 #define LABEL_KIND(LABEL) \
945 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
947 /* Set the kind of LABEL. */
948 #define SET_LABEL_KIND(LABEL, KIND) do { \
949 rtx const _label = (LABEL); \
950 const unsigned int _kind = (KIND); \
951 _label->jump = ((_kind >> 1) & 1); \
952 _label->call = (_kind & 1); \
955 #endif /* rtl flag checking */
957 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
959 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
960 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
961 be decremented and possibly the label can be deleted. */
962 #define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN)
964 /* Once basic blocks are found, each CODE_LABEL starts a chain that
965 goes through all the LABEL_REFs that jump to that label. The chain
966 eventually winds up at the CODE_LABEL: it is circular. */
967 #define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL)
969 /* For a REG rtx, REGNO extracts the register number. REGNO can only
970 be used on RHS. Use SET_REGNO to change the value. */
971 #define REGNO(RTX) (rhs_regno(RTX))
972 #define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
974 /* ORIGINAL_REGNO holds the number the register originally had; for a
975 pseudo register turned into a hard reg this will hold the old pseudo
977 #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)
979 /* Force the REGNO macro to only be used on the lhs. */
980 static inline unsigned int
981 rhs_regno (const_rtx x
)
983 return XCUINT (x
, 0, REG
);
988 /* 1 if RTX is a reg or parallel that is the current function's return
990 #define REG_FUNCTION_VALUE_P(RTX) \
991 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
993 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
994 #define REG_USERVAR_P(RTX) \
995 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil)
997 /* 1 if RTX is a reg that holds a pointer value. */
998 #define REG_POINTER(RTX) \
999 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related)
1001 /* 1 if RTX is a mem that holds a pointer value. */
1002 #define MEM_POINTER(RTX) \
1003 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related)
1005 /* 1 if the given register REG corresponds to a hard register. */
1006 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1008 /* 1 if the given register number REG_NO corresponds to a hard register. */
1009 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1011 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1012 #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)
1013 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1015 /* For a CONST_DOUBLE:
1016 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1017 low-order word and ..._HIGH the high-order.
1018 For a float, there is a REAL_VALUE_TYPE structure, and
1019 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1020 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1021 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1022 #define CONST_DOUBLE_REAL_VALUE(r) \
1023 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1025 #define CONST_FIXED_VALUE(r) \
1026 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1027 #define CONST_FIXED_VALUE_HIGH(r) \
1028 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high))
1029 #define CONST_FIXED_VALUE_LOW(r) \
1030 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low))
1032 /* For a CONST_VECTOR, return element #n. */
1033 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1035 /* For a CONST_VECTOR, return the number of elements in a vector. */
1036 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1038 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1039 SUBREG_BYTE extracts the byte-number. */
1041 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1042 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1045 /* Return the right cost to give to an operation
1046 to make the cost of the corresponding register-to-register instruction
1047 N times that of a fast register-to-register instruction. */
1048 #define COSTS_N_INSNS(N) ((N) * 4)
1050 /* Maximum cost of an rtl expression. This value has the special meaning
1051 not to use an rtx with this cost under any circumstances. */
1052 #define MAX_COST INT_MAX
1054 extern void init_rtlanal (void);
1055 extern int rtx_cost (rtx
, enum rtx_code
);
1056 extern int address_cost (rtx
, enum machine_mode
);
1057 extern unsigned int subreg_lsb (const_rtx
);
1058 extern unsigned int subreg_lsb_1 (enum machine_mode
, enum machine_mode
,
1060 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode
,
1061 unsigned int, enum machine_mode
);
1062 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode
,
1063 unsigned int, enum machine_mode
);
1064 extern unsigned int subreg_regno (const_rtx
);
1065 extern unsigned int subreg_nregs (const_rtx
);
1066 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
1067 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, enum machine_mode
);
1068 extern unsigned int num_sign_bit_copies (const_rtx
, enum machine_mode
);
1069 extern bool constant_pool_constant_p (rtx
);
1070 extern bool truncated_to_mode (enum machine_mode
, const_rtx
);
1073 /* 1 if RTX is a subreg containing a reg that is already known to be
1074 sign- or zero-extended from the mode of the subreg to the mode of
1075 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
1078 When used as a LHS, is means that this extension must be done
1079 when assigning to SUBREG_REG. */
1081 #define SUBREG_PROMOTED_VAR_P(RTX) \
1082 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
1084 #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \
1086 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \
1088 _rtx->volatil = 1; \
1090 _rtx->volatil = 0; \
1091 _rtx->unchanging = (VAL); \
1094 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
1095 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
1096 ? -1 : (RTX)->unchanging)
1098 /* Access various components of an ASM_OPERANDS rtx. */
1100 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
1101 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
1102 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
1103 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
1104 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
1105 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
1106 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
1107 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
1108 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
1109 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
1110 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
1111 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
1112 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
1113 #ifdef USE_MAPPED_LOCATION
1114 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS)
1115 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
1117 #define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS)
1118 #define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS)
1119 #define ASM_INPUT_SOURCE_FILE(RTX) XCSTR (RTX, 1, ASM_INPUT)
1120 #define ASM_INPUT_SOURCE_LINE(RTX) XCINT (RTX, 2, ASM_INPUT)
1123 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
1124 #define MEM_READONLY_P(RTX) \
1125 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging)
1127 /* 1 if RTX is a mem and we should keep the alias set for this mem
1128 unchanged when we access a component. Set to 1, or example, when we
1129 are already in a non-addressable component of an aggregate. */
1130 #define MEM_KEEP_ALIAS_SET_P(RTX) \
1131 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
1133 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
1134 #define MEM_VOLATILE_P(RTX) \
1135 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
1136 ASM_INPUT)->volatil)
1138 /* 1 if RTX is a mem that refers to an aggregate, either to the
1139 aggregate itself or to a field of the aggregate. If zero, RTX may
1140 or may not be such a reference. */
1141 #define MEM_IN_STRUCT_P(RTX) \
1142 (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct)
1144 /* 1 if RTX is a MEM that refers to a scalar. If zero, RTX may or may
1145 not refer to a scalar. */
1146 #define MEM_SCALAR_P(RTX) \
1147 (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val)
1149 /* 1 if RTX is a mem that cannot trap. */
1150 #define MEM_NOTRAP_P(RTX) \
1151 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call)
1153 /* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in
1154 RTX. Otherwise, vice versa. Use this macro only when you are
1155 *sure* that you know that the MEM is in a structure, or is a
1156 scalar. VAL is evaluated only once. */
1157 #define MEM_SET_IN_STRUCT_P(RTX, VAL) \
1161 MEM_IN_STRUCT_P (RTX) = 1; \
1162 MEM_SCALAR_P (RTX) = 0; \
1166 MEM_IN_STRUCT_P (RTX) = 0; \
1167 MEM_SCALAR_P (RTX) = 1; \
1171 /* The memory attribute block. We provide access macros for each value
1172 in the block and provide defaults if none specified. */
1173 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
1175 /* The register attribute block. We provide access macros for each value
1176 in the block and provide defaults if none specified. */
1177 #define REG_ATTRS(RTX) X0REGATTR (RTX, 2)
1179 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
1180 set, and may alias anything. Otherwise, the MEM can only alias
1181 MEMs in a conflicting alias set. This value is set in a
1182 language-dependent manner in the front-end, and should not be
1183 altered in the back-end. These set numbers are tested with
1184 alias_sets_conflict_p. */
1185 #define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias)
1187 /* For a MEM rtx, the decl it is known to refer to, if it is known to
1188 refer to part of a DECL. It may also be a COMPONENT_REF. */
1189 #define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr)
1191 /* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a
1192 RTX that is always a CONST_INT. */
1193 #define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset)
1195 /* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that
1196 is always a CONST_INT. */
1197 #define MEM_SIZE(RTX) \
1198 (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \
1199 : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \
1202 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
1203 mode as a default when STRICT_ALIGNMENT, but not if not. */
1204 #define MEM_ALIGN(RTX) \
1205 (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \
1206 : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \
1207 ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT))
1209 /* For a REG rtx, the decl it is known to refer to, if it is known to
1210 refer to part of a DECL. */
1211 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
1213 /* For a MEM rtx, the offset from the start of MEM_DECL, if known, as a
1214 RTX that is always a CONST_INT. */
1215 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
1217 /* Copy the attributes that apply to memory locations from RHS to LHS. */
1218 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
1219 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
1220 MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \
1221 MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \
1222 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
1223 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
1224 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
1225 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
1226 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
1228 /* 1 if RTX is a label_ref for a nonlocal label. */
1229 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
1230 REG_LABEL_TARGET note. */
1231 #define LABEL_REF_NONLOCAL_P(RTX) \
1232 (RTL_FLAG_CHECK3("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF, \
1233 REG_LABEL_OPERAND, REG_LABEL_TARGET)->volatil)
1235 /* 1 if RTX is a code_label that should always be considered to be needed. */
1236 #define LABEL_PRESERVE_P(RTX) \
1237 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
1239 /* During sched, 1 if RTX is an insn that must be scheduled together
1240 with the preceding insn. */
1241 #define SCHED_GROUP_P(RTX) \
1242 (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \
1245 /* For a SET rtx, SET_DEST is the place that is set
1246 and SET_SRC is the value it is set to. */
1247 #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
1248 #define SET_SRC(RTX) XCEXP(RTX, 1, SET)
1249 #define SET_IS_RETURN_P(RTX) \
1250 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump)
1252 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
1253 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
1254 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
1256 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
1257 conditionally executing the code on, COND_EXEC_CODE is the code
1258 to execute if the condition is true. */
1259 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
1260 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
1262 /* 1 if RTX is a symbol_ref that addresses this function's rtl
1264 #define CONSTANT_POOL_ADDRESS_P(RTX) \
1265 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
1267 /* 1 if RTX is a symbol_ref that addresses a value in the file's
1268 tree constant pool. This information is private to varasm.c. */
1269 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
1270 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \
1271 (RTX), SYMBOL_REF)->frame_related)
1273 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
1274 #define SYMBOL_REF_FLAG(RTX) \
1275 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
1277 /* 1 if RTX is a symbol_ref that has been the library function in
1278 emit_library_call. */
1279 #define SYMBOL_REF_USED(RTX) \
1280 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
1282 /* 1 if RTX is a symbol_ref for a weak symbol. */
1283 #define SYMBOL_REF_WEAK(RTX) \
1284 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
1286 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
1287 SYMBOL_REF_CONSTANT. */
1288 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2)
1290 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
1292 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
1293 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL))
1295 /* The tree (decl or constant) associated with the symbol, or null. */
1296 #define SYMBOL_REF_DECL(RTX) \
1297 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2))
1299 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
1300 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
1301 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C))
1303 /* The rtx constant pool entry for a symbol, or null. */
1304 #define SYMBOL_REF_CONSTANT(RTX) \
1305 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL)
1307 /* A set of flags on a symbol_ref that are, in some respects, redundant with
1308 information derivable from the tree decl associated with this symbol.
1309 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
1310 decl. In some cases this is a bug. But beyond that, it's nice to cache
1311 this information to avoid recomputing it. Finally, this allows space for
1312 the target to store more than one bit of information, as with
1314 #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1)
1316 /* These flags are common enough to be defined for all targets. They
1317 are computed by the default version of targetm.encode_section_info. */
1319 /* Set if this symbol is a function. */
1320 #define SYMBOL_FLAG_FUNCTION (1 << 0)
1321 #define SYMBOL_REF_FUNCTION_P(RTX) \
1322 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
1323 /* Set if targetm.binds_local_p is true. */
1324 #define SYMBOL_FLAG_LOCAL (1 << 1)
1325 #define SYMBOL_REF_LOCAL_P(RTX) \
1326 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
1327 /* Set if targetm.in_small_data_p is true. */
1328 #define SYMBOL_FLAG_SMALL (1 << 2)
1329 #define SYMBOL_REF_SMALL_P(RTX) \
1330 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
1331 /* The three-bit field at [5:3] is true for TLS variables; use
1332 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
1333 #define SYMBOL_FLAG_TLS_SHIFT 3
1334 #define SYMBOL_REF_TLS_MODEL(RTX) \
1335 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
1336 /* Set if this symbol is not defined in this translation unit. */
1337 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
1338 #define SYMBOL_REF_EXTERNAL_P(RTX) \
1339 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
1340 /* Set if this symbol has a block_symbol structure associated with it. */
1341 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
1342 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
1343 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
1344 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
1345 SYMBOL_REF_HAS_BLOCK_INFO_P. */
1346 #define SYMBOL_FLAG_ANCHOR (1 << 8)
1347 #define SYMBOL_REF_ANCHOR_P(RTX) \
1348 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
1350 /* Subsequent bits are available for the target to use. */
1351 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
1352 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
1354 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
1355 structure to which the symbol belongs, or NULL if it has not been
1356 assigned a block. */
1357 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
1359 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
1360 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
1361 RTX has not yet been assigned to a block, or it has not been given an
1362 offset within that block. */
1363 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
1365 /* Indicate whether the machine has any sort of auto increment addressing.
1366 If not, we can avoid checking for REG_INC notes. */
1368 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
1369 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
1370 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \
1371 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
1372 #define AUTO_INC_DEC
1375 /* Define a macro to look for REG_INC notes,
1376 but save time on machines where they never exist. */
1379 #define FIND_REG_INC_NOTE(INSN, REG) \
1380 ((REG) != NULL_RTX && REG_P ((REG)) \
1381 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
1382 : find_reg_note ((INSN), REG_INC, (REG)))
1384 #define FIND_REG_INC_NOTE(INSN, REG) 0
1387 #ifndef HAVE_PRE_INCREMENT
1388 #define HAVE_PRE_INCREMENT 0
1391 #ifndef HAVE_PRE_DECREMENT
1392 #define HAVE_PRE_DECREMENT 0
1395 #ifndef HAVE_POST_INCREMENT
1396 #define HAVE_POST_INCREMENT 0
1399 #ifndef HAVE_POST_DECREMENT
1400 #define HAVE_POST_DECREMENT 0
1403 #ifndef HAVE_POST_MODIFY_DISP
1404 #define HAVE_POST_MODIFY_DISP 0
1407 #ifndef HAVE_POST_MODIFY_REG
1408 #define HAVE_POST_MODIFY_REG 0
1411 #ifndef HAVE_PRE_MODIFY_DISP
1412 #define HAVE_PRE_MODIFY_DISP 0
1415 #ifndef HAVE_PRE_MODIFY_REG
1416 #define HAVE_PRE_MODIFY_REG 0
1420 /* Some architectures do not have complete pre/post increment/decrement
1421 instruction sets, or only move some modes efficiently. These macros
1422 allow us to tune autoincrement generation. */
1424 #ifndef USE_LOAD_POST_INCREMENT
1425 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1428 #ifndef USE_LOAD_POST_DECREMENT
1429 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1432 #ifndef USE_LOAD_PRE_INCREMENT
1433 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1436 #ifndef USE_LOAD_PRE_DECREMENT
1437 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1440 #ifndef USE_STORE_POST_INCREMENT
1441 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
1444 #ifndef USE_STORE_POST_DECREMENT
1445 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
1448 #ifndef USE_STORE_PRE_INCREMENT
1449 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
1452 #ifndef USE_STORE_PRE_DECREMENT
1453 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
1456 /* Nonzero when we are generating CONCATs. */
1457 extern int generating_concat_p
;
1459 /* Nonzero when we are expanding trees to RTL. */
1460 extern int currently_expanding_to_rtl
;
1462 /* Generally useful functions. */
1465 extern int ceil_log2 (unsigned HOST_WIDE_INT
);
1468 extern void set_stack_check_libfunc (rtx
);
1469 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, enum machine_mode
);
1470 extern rtx
plus_constant (rtx
, HOST_WIDE_INT
);
1473 extern rtx
gen_blockage (void);
1474 extern rtvec
gen_rtvec (int, ...);
1475 extern rtx
copy_insn_1 (rtx
);
1476 extern rtx
copy_insn (rtx
);
1477 extern rtx
gen_int_mode (HOST_WIDE_INT
, enum machine_mode
);
1478 extern rtx
emit_copy_of_insn_after (rtx
, rtx
);
1479 extern void set_reg_attrs_from_mem (rtx
, rtx
);
1480 extern void set_mem_attrs_from_reg (rtx
, rtx
);
1481 extern void set_reg_attrs_for_parm (rtx
, rtx
);
1482 extern int mem_expr_equal_p (const_tree
, const_tree
);
1485 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
1486 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
1488 extern rtvec
rtvec_alloc (int);
1489 extern bool shared_const_p (const_rtx
);
1490 extern rtx
copy_rtx (rtx
);
1491 extern void dump_rtx_statistics (void);
1494 extern rtx
copy_rtx_if_shared (rtx
);
1497 extern unsigned int rtx_size (const_rtx
);
1498 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
1499 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
1500 extern int rtx_equal_p (const_rtx
, const_rtx
);
1503 extern rtvec
gen_rtvec_v (int, rtx
*);
1504 extern rtx
gen_reg_rtx (enum machine_mode
);
1505 extern rtx
gen_rtx_REG_offset (rtx
, enum machine_mode
, unsigned int, int);
1506 extern rtx
gen_reg_rtx_offset (rtx
, enum machine_mode
, int);
1507 extern rtx
gen_label_rtx (void);
1508 extern rtx
gen_lowpart_common (enum machine_mode
, rtx
);
1511 extern rtx
gen_lowpart_if_possible (enum machine_mode
, rtx
);
1514 extern rtx
gen_highpart (enum machine_mode
, rtx
);
1515 extern rtx
gen_highpart_mode (enum machine_mode
, enum machine_mode
, rtx
);
1516 extern rtx
operand_subword (rtx
, unsigned int, int, enum machine_mode
);
1519 extern rtx
operand_subword_force (rtx
, unsigned int, enum machine_mode
);
1520 extern int subreg_lowpart_p (const_rtx
);
1521 extern unsigned int subreg_lowpart_offset (enum machine_mode
,
1523 extern unsigned int subreg_highpart_offset (enum machine_mode
,
1525 extern rtx
make_safe_from (rtx
, rtx
);
1526 extern rtx
convert_memory_address (enum machine_mode
, rtx
);
1527 extern rtx
get_insns (void);
1528 extern const char *get_insn_name (int);
1529 extern rtx
get_last_insn (void);
1530 extern rtx
get_last_insn_anywhere (void);
1531 extern rtx
get_first_nonnote_insn (void);
1532 extern rtx
get_last_nonnote_insn (void);
1533 extern void start_sequence (void);
1534 extern void push_to_sequence (rtx
);
1535 extern void push_to_sequence2 (rtx
, rtx
);
1536 extern void end_sequence (void);
1537 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
1542 extern rtx
lowpart_subreg (enum machine_mode
, rtx
, enum machine_mode
);
1545 extern rtx
force_const_mem (enum machine_mode
, rtx
);
1550 extern rtx
get_pool_constant (rtx
);
1551 extern rtx
get_pool_constant_mark (rtx
, bool *);
1552 extern enum machine_mode
get_pool_mode (const_rtx
);
1553 extern rtx
simplify_subtraction (rtx
);
1556 extern rtx
assign_stack_local (enum machine_mode
, HOST_WIDE_INT
, int);
1557 extern rtx
assign_stack_temp (enum machine_mode
, HOST_WIDE_INT
, int);
1558 extern rtx
assign_stack_temp_for_type (enum machine_mode
,
1559 HOST_WIDE_INT
, int, tree
);
1560 extern rtx
assign_temp (tree
, int, int, int);
1563 extern rtx
emit_insn_before (rtx
, rtx
);
1564 extern rtx
emit_insn_before_noloc (rtx
, rtx
, struct basic_block_def
*);
1565 extern rtx
emit_insn_before_setloc (rtx
, rtx
, int);
1566 extern rtx
emit_jump_insn_before (rtx
, rtx
);
1567 extern rtx
emit_jump_insn_before_noloc (rtx
, rtx
);
1568 extern rtx
emit_jump_insn_before_setloc (rtx
, rtx
, int);
1569 extern rtx
emit_call_insn_before (rtx
, rtx
);
1570 extern rtx
emit_call_insn_before_noloc (rtx
, rtx
);
1571 extern rtx
emit_call_insn_before_setloc (rtx
, rtx
, int);
1572 extern rtx
emit_barrier_before (rtx
);
1573 extern rtx
emit_label_before (rtx
, rtx
);
1574 extern rtx
emit_note_before (enum insn_note
, rtx
);
1575 extern rtx
emit_insn_after (rtx
, rtx
);
1576 extern rtx
emit_insn_after_noloc (rtx
, rtx
, struct basic_block_def
*);
1577 extern rtx
emit_insn_after_setloc (rtx
, rtx
, int);
1578 extern rtx
emit_jump_insn_after (rtx
, rtx
);
1579 extern rtx
emit_jump_insn_after_noloc (rtx
, rtx
);
1580 extern rtx
emit_jump_insn_after_setloc (rtx
, rtx
, int);
1581 extern rtx
emit_call_insn_after (rtx
, rtx
);
1582 extern rtx
emit_call_insn_after_noloc (rtx
, rtx
);
1583 extern rtx
emit_call_insn_after_setloc (rtx
, rtx
, int);
1584 extern rtx
emit_barrier_after (rtx
);
1585 extern rtx
emit_label_after (rtx
, rtx
);
1586 extern rtx
emit_note_after (enum insn_note
, rtx
);
1587 extern rtx
emit_insn (rtx
);
1588 extern rtx
emit_jump_insn (rtx
);
1589 extern rtx
emit_call_insn (rtx
);
1590 extern rtx
emit_label (rtx
);
1591 extern rtx
emit_barrier (void);
1592 extern rtx
emit_note (enum insn_note
);
1593 extern rtx
emit_note_copy (rtx
);
1594 extern rtx
make_insn_raw (rtx
);
1595 extern rtx
make_jump_insn_raw (rtx
);
1596 extern void add_function_usage_to (rtx
, rtx
);
1597 extern rtx
last_call_insn (void);
1598 extern rtx
previous_insn (rtx
);
1599 extern rtx
next_insn (rtx
);
1600 extern rtx
prev_nonnote_insn (rtx
);
1601 extern rtx
next_nonnote_insn (rtx
);
1602 extern rtx
prev_real_insn (rtx
);
1603 extern rtx
next_real_insn (rtx
);
1604 extern rtx
prev_active_insn (rtx
);
1605 extern rtx
next_active_insn (rtx
);
1606 extern int active_insn_p (const_rtx
);
1607 extern rtx
prev_label (rtx
);
1608 extern rtx
next_label (rtx
);
1609 extern rtx
skip_consecutive_labels (rtx
);
1610 extern rtx
next_cc0_user (rtx
);
1611 extern rtx
prev_cc0_setter (rtx
);
1613 /* In cfglayout.c */
1614 extern int insn_line (const_rtx
);
1615 extern const char * insn_file (const_rtx
);
1616 extern int locator_line (int);
1617 extern const char * locator_file (int);
1618 extern int prologue_locator
, epilogue_locator
;
1621 extern enum rtx_code
reverse_condition (enum rtx_code
);
1622 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
1623 extern enum rtx_code
swap_condition (enum rtx_code
);
1624 extern enum rtx_code
unsigned_condition (enum rtx_code
);
1625 extern enum rtx_code
signed_condition (enum rtx_code
);
1626 extern void mark_jump_label (rtx
, rtx
, int);
1627 extern unsigned int cleanup_barriers (void);
1630 extern rtx
delete_related_insns (rtx
);
1633 extern rtx
*find_constant_term_loc (rtx
*);
1636 extern rtx
try_split (rtx
, rtx
, int);
1637 extern int split_branch_probability
;
1639 /* In unknown file */
1640 extern rtx
split_insns (rtx
, rtx
);
1642 /* In simplify-rtx.c */
1643 extern rtx
simplify_const_unary_operation (enum rtx_code
, enum machine_mode
,
1644 rtx
, enum machine_mode
);
1645 extern rtx
simplify_unary_operation (enum rtx_code
, enum machine_mode
, rtx
,
1647 extern rtx
simplify_const_binary_operation (enum rtx_code
, enum machine_mode
,
1649 extern rtx
simplify_binary_operation (enum rtx_code
, enum machine_mode
, rtx
,
1651 extern rtx
simplify_ternary_operation (enum rtx_code
, enum machine_mode
,
1652 enum machine_mode
, rtx
, rtx
, rtx
);
1653 extern rtx
simplify_const_relational_operation (enum rtx_code
,
1654 enum machine_mode
, rtx
, rtx
);
1655 extern rtx
simplify_relational_operation (enum rtx_code
, enum machine_mode
,
1656 enum machine_mode
, rtx
, rtx
);
1657 extern rtx
simplify_gen_binary (enum rtx_code
, enum machine_mode
, rtx
, rtx
);
1658 extern rtx
simplify_gen_unary (enum rtx_code
, enum machine_mode
, rtx
,
1660 extern rtx
simplify_gen_ternary (enum rtx_code
, enum machine_mode
,
1661 enum machine_mode
, rtx
, rtx
, rtx
);
1662 extern rtx
simplify_gen_relational (enum rtx_code
, enum machine_mode
,
1663 enum machine_mode
, rtx
, rtx
);
1664 extern rtx
simplify_subreg (enum machine_mode
, rtx
, enum machine_mode
,
1666 extern rtx
simplify_gen_subreg (enum machine_mode
, rtx
, enum machine_mode
,
1668 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
1669 extern rtx
simplify_rtx (const_rtx
);
1670 extern rtx
avoid_constant_pool_reference (rtx
);
1671 extern bool mode_signbit_p (enum machine_mode
, const_rtx
);
1674 extern enum machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
1678 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
1679 extern void set_insn_deleted (rtx
);
1681 /* Functions in rtlanal.c */
1683 /* Single set is implemented as macro for performance reasons. */
1684 #define single_set(I) (INSN_P (I) \
1685 ? (GET_CODE (PATTERN (I)) == SET \
1686 ? PATTERN (I) : single_set_1 (I)) \
1688 #define single_set_1(I) single_set_2 (I, PATTERN (I))
1690 /* Structure used for passing data to REPLACE_LABEL. */
1691 typedef struct replace_label_data
1695 bool update_label_nuses
;
1696 } replace_label_data
;
1698 extern int rtx_addr_can_trap_p (const_rtx
);
1699 extern bool nonzero_address_p (const_rtx
);
1700 extern int rtx_unstable_p (const_rtx
);
1701 extern bool rtx_varies_p (const_rtx
, bool);
1702 extern bool rtx_addr_varies_p (const_rtx
, bool);
1703 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
1704 extern rtx
get_related_value (const_rtx
);
1705 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
1706 extern void split_const (rtx
, rtx
*, rtx
*);
1707 extern int reg_mentioned_p (const_rtx
, const_rtx
);
1708 extern int count_occurrences (const_rtx
, const_rtx
, int);
1709 extern int reg_referenced_p (const_rtx
, const_rtx
);
1710 extern int reg_used_between_p (const_rtx
, const_rtx
, const_rtx
);
1711 extern int reg_set_between_p (const_rtx
, const_rtx
, const_rtx
);
1712 extern int commutative_operand_precedence (rtx
);
1713 extern bool swap_commutative_operands_p (rtx
, rtx
);
1714 extern int modified_between_p (const_rtx
, const_rtx
, const_rtx
);
1715 extern int no_labels_between_p (const_rtx
, const_rtx
);
1716 extern int modified_in_p (const_rtx
, const_rtx
);
1717 extern int reg_set_p (const_rtx
, const_rtx
);
1718 extern rtx
single_set_2 (const_rtx
, const_rtx
);
1719 extern int multiple_sets (const_rtx
);
1720 extern int set_noop_p (const_rtx
);
1721 extern int noop_move_p (const_rtx
);
1722 extern rtx
find_last_value (rtx
, rtx
*, rtx
, int);
1723 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
1724 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
1725 extern const_rtx
set_of (const_rtx
, const_rtx
);
1726 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
1727 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
1728 extern int dead_or_set_p (const_rtx
, const_rtx
);
1729 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
1730 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
1731 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
1732 extern rtx
find_reg_equal_equiv_note (const_rtx
);
1733 extern rtx
find_constant_src (const_rtx
);
1734 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
1735 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
1736 extern int pure_call_p (const_rtx
);
1737 extern void remove_note (rtx
, const_rtx
);
1738 extern void remove_reg_equal_equiv_notes (rtx
);
1739 extern int side_effects_p (const_rtx
);
1740 extern int volatile_refs_p (const_rtx
);
1741 extern int volatile_insn_p (const_rtx
);
1742 extern int may_trap_p (const_rtx
);
1743 extern int may_trap_after_code_motion_p (const_rtx
);
1744 extern int may_trap_or_fault_p (const_rtx
);
1745 extern int inequality_comparisons_p (const_rtx
);
1746 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
1747 extern int replace_label (rtx
*, void *);
1748 extern int rtx_referenced_p (rtx
, rtx
);
1749 extern bool tablejump_p (const_rtx
, rtx
*, rtx
*);
1750 extern int computed_jump_p (const_rtx
);
1751 typedef int (*rtx_function
) (rtx
*, void *);
1752 extern int for_each_rtx (rtx
*, rtx_function
, void *);
1753 extern rtx
regno_use_in (unsigned int, rtx
);
1754 extern int auto_inc_p (const_rtx
);
1755 extern int in_expr_list_p (const_rtx
, const_rtx
);
1756 extern void remove_node_from_expr_list (const_rtx
, rtx
*);
1757 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
1758 extern rtx
find_first_parameter_load (rtx
, rtx
);
1759 extern bool keep_with_call_p (const_rtx
);
1760 extern bool label_is_jump_target_p (const_rtx
, const_rtx
);
1761 extern int insn_rtx_cost (rtx
);
1763 /* Given an insn and condition, return a canonical description of
1764 the test being made. */
1765 extern rtx
canonicalize_condition (rtx
, rtx
, int, rtx
*, rtx
, int, int);
1767 /* Given a JUMP_INSN, return a canonical description of the test
1769 extern rtx
get_condition (rtx
, rtx
*, int, int);
1773 void free_EXPR_LIST_list (rtx
*);
1774 void free_INSN_LIST_list (rtx
*);
1775 void free_EXPR_LIST_node (rtx
);
1776 void free_INSN_LIST_node (rtx
);
1777 rtx
alloc_INSN_LIST (rtx
, rtx
);
1778 rtx
alloc_EXPR_LIST (int, rtx
, rtx
);
1779 void remove_free_INSN_LIST_elem (rtx
, rtx
*);
1780 rtx
remove_list_elem (rtx
, rtx
*);
1784 /* Free up register info memory. */
1785 extern void free_reg_info (void);
1788 extern int asm_noperands (const_rtx
);
1789 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
1790 enum machine_mode
*, location_t
*);
1792 extern enum reg_class
reg_preferred_class (int);
1793 extern enum reg_class
reg_alternate_class (int);
1795 extern void split_all_insns (void);
1796 extern unsigned int split_all_insns_noflow (void);
1798 #define MAX_SAVED_CONST_INT 64
1799 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
1801 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
1802 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
1803 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
1804 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
1805 extern GTY(()) rtx const_true_rtx
;
1807 extern GTY(()) rtx const_tiny_rtx
[3][(int) MAX_MACHINE_MODE
];
1809 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
1810 same as VOIDmode. */
1812 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
1814 /* Likewise, for the constants 1 and 2. */
1816 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
1817 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
1819 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
1820 is used to represent the frame pointer. This is because the
1821 hard frame pointer and the automatic variables are separated by an amount
1822 that cannot be determined until after register allocation. We can assume
1823 that in this case ELIMINABLE_REGS will be defined, one action of which
1824 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
1825 #ifndef HARD_FRAME_POINTER_REGNUM
1826 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
1829 /* Index labels for global_rtl. */
1830 enum global_rtl_index
1836 /* For register elimination to work properly these hard_frame_pointer_rtx,
1837 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
1838 the same register. */
1839 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
1840 GR_ARG_POINTER
= GR_FRAME_POINTER
,
1842 #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM
1843 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
1845 GR_HARD_FRAME_POINTER
,
1847 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
1848 #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
1849 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
1854 GR_VIRTUAL_INCOMING_ARGS
,
1855 GR_VIRTUAL_STACK_ARGS
,
1856 GR_VIRTUAL_STACK_DYNAMIC
,
1857 GR_VIRTUAL_OUTGOING_ARGS
,
1863 /* Pointers to standard pieces of rtx are stored here. */
1864 extern GTY(()) rtx global_rtl
[GR_MAX
];
1866 /* Standard pieces of rtx, to be substituted directly into things. */
1867 #define pc_rtx (global_rtl[GR_PC])
1868 #define cc0_rtx (global_rtl[GR_CC0])
1870 /* All references to certain hard regs, except those created
1871 by allocating pseudo regs into them (when that's possible),
1872 go through these unique rtx objects. */
1873 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
1874 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
1875 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
1876 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
1878 extern GTY(()) rtx pic_offset_table_rtx
;
1879 extern GTY(()) rtx static_chain_rtx
;
1880 extern GTY(()) rtx static_chain_incoming_rtx
;
1881 extern GTY(()) rtx return_address_pointer_rtx
;
1883 /* Include the RTL generation functions. */
1885 #ifndef GENERATOR_FILE
1887 #undef gen_rtx_ASM_INPUT
1888 #ifdef USE_MAPPED_LOCATION
1889 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
1890 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
1891 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
1892 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
1894 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
1895 gen_rtx_fmt_ssi (ASM_INPUT, (MODE), (ARG0), "", 0)
1896 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
1897 gen_rtx_fmt_ssi (ASM_INPUT, (MODE), (ARG0), (LOC).file, (LOC).line)
1898 #undef gen_rtx_ASM_OPERANDS
1899 #define gen_rtx_ASM_OPERANDS(MODE, ARG0, ARG1, ARG2, ARG3, ARG4, LOC) \
1900 gen_rtx_fmt_ssiEEsi (ASM_OPERANDS, (MODE), (ARG0), (ARG1), (ARG2), (ARG3), (ARG4), (LOC).file, (LOC).line)
1904 /* There are some RTL codes that require special attention; the
1905 generation functions included above do the raw handling. If you
1906 add to this list, modify special_rtx in gengenrtl.c as well. */
1908 extern rtx
gen_rtx_CONST_INT (enum machine_mode
, HOST_WIDE_INT
);
1909 extern rtx
gen_rtx_CONST_VECTOR (enum machine_mode
, rtvec
);
1910 extern rtx
gen_raw_REG (enum machine_mode
, int);
1911 extern rtx
gen_rtx_REG (enum machine_mode
, unsigned);
1912 extern rtx
gen_rtx_SUBREG (enum machine_mode
, rtx
, int);
1913 extern rtx
gen_rtx_MEM (enum machine_mode
, rtx
);
1915 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
1917 /* Virtual registers are used during RTL generation to refer to locations into
1918 the stack frame when the actual location isn't known until RTL generation
1919 is complete. The routine instantiate_virtual_regs replaces these with
1920 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
1923 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
1925 /* This points to the first word of the incoming arguments passed on the stack,
1926 either by the caller or by the callee when pretending it was passed by the
1929 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
1931 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
1933 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
1934 variable on the stack. Otherwise, it points to the first variable on
1937 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
1939 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
1941 /* This points to the location of dynamically-allocated memory on the stack
1942 immediately after the stack pointer has been adjusted by the amount
1945 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
1947 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
1949 /* This points to the location in the stack at which outgoing arguments should
1950 be written when the stack is pre-pushed (arguments pushed using push
1951 insns always use sp). */
1953 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
1955 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
1957 /* This points to the Canonical Frame Address of the function. This
1958 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
1959 but is calculated relative to the arg pointer for simplicity; the
1960 frame pointer nor stack pointer are necessarily fixed relative to
1961 the CFA until after reload. */
1963 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
1965 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
1967 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
1969 /* Nonzero if REGNUM is a pointer into the stack frame. */
1970 #define REGNO_PTR_FRAME_P(REGNUM) \
1971 ((REGNUM) == STACK_POINTER_REGNUM \
1972 || (REGNUM) == FRAME_POINTER_REGNUM \
1973 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
1974 || (REGNUM) == ARG_POINTER_REGNUM \
1975 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
1976 && (REGNUM) <= LAST_VIRTUAL_REGISTER))
1978 /* REGNUM never really appearing in the INSN stream. */
1979 #define INVALID_REGNUM (~(unsigned int) 0)
1981 extern rtx
output_constant_def (tree
, int);
1982 extern rtx
lookup_constant_def (tree
);
1984 /* Nonzero after end of reload pass.
1985 Set to 1 or 0 by reload1.c. */
1987 extern int reload_completed
;
1989 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
1990 extern int epilogue_completed
;
1992 /* Set to 1 while reload_as_needed is operating.
1993 Required by some machines to handle any generated moves differently. */
1995 extern int reload_in_progress
;
1997 /* This macro indicates whether you may create a new
2000 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
2003 /* Nonzero after end of regstack pass.
2004 Set to 1 or 0 by reg-stack.c. */
2005 extern int regstack_completed
;
2008 /* If this is nonzero, we do not bother generating VOLATILE
2009 around volatile memory references, and we are willing to
2010 output indirect addresses. If cse is to follow, we reject
2011 indirect addresses so a useful potential cse is generated;
2012 if it is used only once, instruction combination will produce
2013 the same indirect address eventually. */
2014 extern int cse_not_expected
;
2016 /* Translates rtx code to tree code, for those codes needed by
2017 REAL_ARITHMETIC. The function returns an int because the caller may not
2018 know what `enum tree_code' means. */
2020 extern int rtx_to_tree_code (enum rtx_code
);
2023 extern int delete_trivially_dead_insns (rtx
, int);
2024 extern int cse_main (rtx
, int);
2025 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
2026 extern unsigned hash_rtx (const_rtx x
, enum machine_mode
, int *, int *, bool);
2029 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
2030 extern int condjump_p (const_rtx
);
2031 extern int any_condjump_p (const_rtx
);
2032 extern int any_uncondjump_p (const_rtx
);
2033 extern rtx
pc_set (const_rtx
);
2034 extern rtx
condjump_label (const_rtx
);
2035 extern int simplejump_p (const_rtx
);
2036 extern int returnjump_p (rtx
);
2037 extern int onlyjump_p (const_rtx
);
2038 extern int only_sets_cc0_p (const_rtx
);
2039 extern int sets_cc0_p (const_rtx
);
2040 extern int invert_jump_1 (rtx
, rtx
);
2041 extern int invert_jump (rtx
, rtx
, int);
2042 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
2043 extern int true_regnum (const_rtx
);
2044 extern unsigned int reg_or_subregno (const_rtx
);
2045 extern int redirect_jump_1 (rtx
, rtx
);
2046 extern void redirect_jump_2 (rtx
, rtx
, rtx
, int, int);
2047 extern int redirect_jump (rtx
, rtx
, int);
2048 extern void rebuild_jump_labels (rtx
);
2049 extern rtx
reversed_comparison (const_rtx
, enum machine_mode
);
2050 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
2051 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
2052 const_rtx
, const_rtx
);
2053 extern void delete_for_peephole (rtx
, rtx
);
2054 extern int condjump_in_parallel_p (const_rtx
);
2056 /* In emit-rtl.c. */
2057 extern int max_reg_num (void);
2058 extern int max_label_num (void);
2059 extern int get_first_label_num (void);
2060 extern void maybe_set_first_label_num (rtx
);
2061 extern void delete_insns_since (rtx
);
2062 extern void mark_reg_pointer (rtx
, int);
2063 extern void mark_user_reg (rtx
);
2064 extern void reset_used_flags (rtx
);
2065 extern void set_used_flags (rtx
);
2066 extern void reorder_insns (rtx
, rtx
, rtx
);
2067 extern void reorder_insns_nobb (rtx
, rtx
, rtx
);
2068 extern int get_max_uid (void);
2069 extern int in_sequence_p (void);
2070 extern void force_next_line_note (void);
2071 extern void init_emit (void);
2072 extern void init_emit_regs (void);
2073 extern void init_emit_once (int);
2074 extern void push_topmost_sequence (void);
2075 extern void pop_topmost_sequence (void);
2076 extern void set_new_first_and_last_insn (rtx
, rtx
);
2077 extern unsigned int unshare_all_rtl (void);
2078 extern void unshare_all_rtl_again (rtx
);
2079 extern void unshare_all_rtl_in_chain (rtx
);
2080 extern void verify_rtl_sharing (void);
2081 extern void set_first_insn (rtx
);
2082 extern void set_last_insn (rtx
);
2083 extern void link_cc0_insns (rtx
);
2084 extern void add_insn (rtx
);
2085 extern void add_insn_before (rtx
, rtx
, struct basic_block_def
*);
2086 extern void add_insn_after (rtx
, rtx
, struct basic_block_def
*);
2087 extern void remove_insn (rtx
);
2088 extern rtx
emit (rtx
);
2089 extern rtx
delete_insn (rtx
);
2090 extern rtx
entry_of_function (void);
2091 extern void emit_insn_at_entry (rtx
);
2092 extern void delete_insn_chain (rtx
, rtx
, bool);
2093 extern rtx
unlink_insn_chain (rtx
, rtx
);
2094 extern rtx
delete_insn_and_edges (rtx
);
2095 extern rtx
gen_lowpart_SUBREG (enum machine_mode
, rtx
);
2096 extern rtx
gen_const_mem (enum machine_mode
, rtx
);
2097 extern rtx
gen_frame_mem (enum machine_mode
, rtx
);
2098 extern rtx
gen_tmp_stack_mem (enum machine_mode
, rtx
);
2099 extern bool validate_subreg (enum machine_mode
, enum machine_mode
,
2100 const_rtx
, unsigned int);
2103 extern unsigned int extended_count (const_rtx
, enum machine_mode
, int);
2104 extern rtx
remove_death (unsigned int, rtx
);
2105 extern void dump_combine_stats (FILE *);
2106 extern void dump_combine_total_stats (FILE *);
2108 /* In cfgcleanup.c */
2109 extern void delete_dead_jumptables (void);
2111 /* In sched-vis.c. */
2112 extern void print_rtl_slim_with_bb (FILE *, rtx
, int);
2113 extern void dump_insn_slim (FILE *f
, rtx x
);
2114 extern void debug_insn_slim (rtx x
);
2116 /* In sched-rgn.c. */
2117 extern void schedule_insns (void);
2119 /* In sched-ebb.c. */
2120 extern void schedule_ebbs (void);
2122 /* In haifa-sched.c. */
2123 extern void fix_sched_param (const char *, const char *);
2125 /* In print-rtl.c */
2126 extern const char *print_rtx_head
;
2127 extern void debug_rtx (const_rtx
);
2128 extern void debug_rtx_list (const_rtx
, int);
2129 extern void debug_rtx_range (const_rtx
, const_rtx
);
2130 extern const_rtx
debug_rtx_find (const_rtx
, int);
2131 extern void print_mem_expr (FILE *, const_tree
);
2132 extern void print_rtl (FILE *, const_rtx
);
2133 extern void print_simple_rtl (FILE *, const_rtx
);
2134 extern int print_rtl_single (FILE *, const_rtx
);
2135 extern void print_inline_rtx (FILE *, const_rtx
, int);
2138 extern void reposition_prologue_and_epilogue_notes (void);
2139 extern int prologue_epilogue_contains (const_rtx
);
2140 extern int sibcall_epilogue_contains (const_rtx
);
2141 extern void mark_temp_addr_taken (rtx
);
2142 extern void update_temp_slot_address (rtx
, rtx
);
2145 extern void expand_null_return (void);
2146 extern void expand_naked_return (void);
2147 extern void emit_jump (rtx
);
2150 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
2154 extern void print_rtl_with_bb (FILE *, const_rtx
);
2157 extern void dump_reg_info (FILE *);
2158 extern void dump_flow_info (FILE *, int);
2161 extern void init_expmed (void);
2162 extern void expand_inc (rtx
, rtx
);
2163 extern void expand_dec (rtx
, rtx
);
2166 extern bool can_copy_p (enum machine_mode
);
2167 extern rtx
fis_get_condition (rtx
);
2170 extern void mark_elimination (int, int);
2171 extern void dump_global_regs (FILE *);
2173 /* Yes, this ifdef is silly, but HARD_REG_SET is not always defined. */
2174 extern void retry_global_alloc (int, HARD_REG_SET
);
2178 extern int reg_classes_intersect_p (enum reg_class
, enum reg_class
);
2179 extern int reg_class_subset_p (enum reg_class
, enum reg_class
);
2180 extern void globalize_reg (int);
2181 extern void init_reg_modes_target (void);
2182 extern void init_regs (void);
2183 extern void init_fake_stack_mems (void);
2184 extern void save_register_info (void);
2185 extern void init_reg_sets (void);
2186 extern void regclass (rtx
, int);
2187 extern void reg_scan (rtx
, unsigned int);
2188 extern void fix_register (const char *, int, int);
2190 extern void cannot_change_mode_set_regs (HARD_REG_SET
*,
2191 enum machine_mode
, unsigned int);
2193 extern bool invalid_mode_change_p (unsigned int, enum reg_class
,
2197 extern void dbr_schedule (rtx
);
2199 /* In local-alloc.c */
2200 extern void dump_local_alloc (FILE *);
2203 extern int function_invariant_p (const_rtx
);
2211 LCT_CONST_MAKE_BLOCK
= 3,
2212 LCT_PURE_MAKE_BLOCK
= 4,
2215 LCT_RETURNS_TWICE
= 7
2218 extern void emit_library_call (rtx
, enum libcall_type
, enum machine_mode
, int,
2220 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
2221 enum machine_mode
, int, ...);
2224 extern void init_varasm_once (void);
2225 extern enum tls_model
decl_default_tls_model (const_tree
);
2228 extern void traverse_md_constants (int (*) (void **, void *), void *);
2229 struct md_constant
{ char *name
, *value
; };
2232 extern int read_skip_spaces (FILE *);
2233 extern bool read_rtx (FILE *, rtx
*, int *);
2234 extern void copy_rtx_ptr_loc (const void *, const void *);
2235 extern void print_rtx_ptr_loc (const void *);
2236 extern const char *join_c_conditions (const char *, const char *);
2237 extern void print_c_condition (const char *);
2238 extern const char *read_rtx_filename
;
2239 extern int read_rtx_lineno
;
2242 extern rtx
canon_rtx (rtx
);
2243 extern int true_dependence (const_rtx
, enum machine_mode
, const_rtx
, bool (*)(const_rtx
, bool));
2244 extern rtx
get_addr (rtx
);
2245 extern int canon_true_dependence (const_rtx
, enum machine_mode
, rtx
, const_rtx
,
2246 bool (*)(const_rtx
, bool));
2247 extern int read_dependence (const_rtx
, const_rtx
);
2248 extern int anti_dependence (const_rtx
, const_rtx
);
2249 extern int output_dependence (const_rtx
, const_rtx
);
2250 extern void init_alias_target (void);
2251 extern void init_alias_analysis (void);
2252 extern void end_alias_analysis (void);
2253 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
2254 extern rtx
find_base_term (rtx
);
2255 extern rtx
gen_hard_reg_clobber (enum machine_mode
, unsigned int);
2256 extern rtx
get_reg_known_value (unsigned int);
2257 extern bool get_reg_known_equiv_p (unsigned int);
2260 extern int stack_regs_mentioned (const_rtx insn
);
2264 extern GTY(()) rtx stack_limit_rtx
;
2267 extern void invert_br_probabilities (rtx
);
2268 extern bool expensive_function_p (int);
2269 /* In cfgexpand.c */
2270 extern void add_reg_br_prob_note (rtx last
, int probability
);
2272 /* In var-tracking.c */
2273 extern unsigned int variable_tracking_main (void);
2275 /* In stor-layout.c. */
2276 extern void get_mode_bounds (enum machine_mode
, int, enum machine_mode
,
2279 /* In loop-unswitch.c */
2280 extern rtx
reversed_condition (rtx
);
2281 extern rtx
compare_and_jump_seq (rtx
, rtx
, enum rtx_code
, rtx
, int, rtx
);
2284 extern rtx
canon_condition (rtx
);
2285 extern void simplify_using_condition (rtx
, rtx
*, struct bitmap_head_def
*);
2289 rtx (*gen_lowpart
) (enum machine_mode
, rtx
);
2290 rtx (*gen_lowpart_no_emit
) (enum machine_mode
, rtx
);
2291 rtx (*reg_nonzero_bits
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
2292 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
2293 rtx (*reg_num_sign_bit_copies
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
2294 unsigned int, unsigned int *);
2295 bool (*reg_truncated_to_mode
) (enum machine_mode
, const_rtx
);
2297 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
2300 /* Each pass can provide its own. */
2301 extern struct rtl_hooks rtl_hooks
;
2303 /* ... but then it has to restore these. */
2304 extern const struct rtl_hooks general_rtl_hooks
;
2306 /* Keep this for the nonce. */
2307 #define gen_lowpart rtl_hooks.gen_lowpart
2309 extern void insn_locators_alloc (void);
2310 extern void insn_locators_finalize (void);
2311 extern void set_curr_insn_source_location (location_t
);
2312 extern void set_curr_insn_block (tree
);
2313 extern int curr_insn_locator (void);
2315 #endif /* ! GCC_RTL_H */