1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2014 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/>. */
24 #include "statistics.h"
29 #include "fixed-value.h"
36 /* Value used by some passes to "recognize" noop moves as valid
38 #define NOOP_MOVE_INSN_CODE INT_MAX
40 /* Register Transfer Language EXPRESSIONS CODES */
42 #define RTX_CODE enum rtx_code
45 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
46 #include "rtl.def" /* rtl expressions are documented here */
49 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
51 Assumes default enum value assignment. */
53 /* The cast here, saves many elsewhere. */
54 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
56 /* Similar, but since generator files get more entries... */
58 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
61 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
64 /* We check bit 0-1 of some rtx class codes in the predicates below. */
66 /* Bit 0 = comparison if 0, arithmetic is 1
67 Bit 1 = 1 if commutative. */
73 /* Must follow the four preceding values. */
80 /* Bit 0 = 1 if constant. */
89 #define RTX_OBJ_MASK (~1)
90 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
91 #define RTX_COMPARE_MASK (~1)
92 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
93 #define RTX_ARITHMETIC_MASK (~1)
94 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
95 #define RTX_BINARY_MASK (~3)
96 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
97 #define RTX_COMMUTATIVE_MASK (~2)
98 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
99 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
101 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
102 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
104 extern const char * const rtx_name
[NUM_RTX_CODE
];
105 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
107 extern const char * const rtx_format
[NUM_RTX_CODE
];
108 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
110 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
111 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
113 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
114 and NEXT_INSN fields). */
115 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
117 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
118 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
120 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
121 relative to which the offsets are calculated, as explained in rtl.def. */
122 struct addr_diff_vec_flags
124 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
125 unsigned min_align
: 8;
127 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
128 unsigned min_after_vec
: 1; /* minimum address target label is
129 after the ADDR_DIFF_VEC. */
130 unsigned max_after_vec
: 1; /* maximum address target label is
131 after the ADDR_DIFF_VEC. */
132 unsigned min_after_base
: 1; /* minimum address target label is
134 unsigned max_after_base
: 1; /* maximum address target label is
136 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
137 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
142 /* Structure used to describe the attributes of a MEM. These are hashed
143 so MEMs that the same attributes share a data structure. This means
144 they cannot be modified in place. */
145 struct GTY(()) mem_attrs
147 /* The expression that the MEM accesses, or null if not known.
148 This expression might be larger than the memory reference itself.
149 (In other words, the MEM might access only part of the object.) */
152 /* The offset of the memory reference from the start of EXPR.
153 Only valid if OFFSET_KNOWN_P. */
154 HOST_WIDE_INT offset
;
156 /* The size of the memory reference in bytes. Only valid if
160 /* The alias set of the memory reference. */
161 alias_set_type alias
;
163 /* The alignment of the reference in bits. Always a multiple of
164 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
165 than the memory reference itself. */
168 /* The address space that the memory reference uses. */
169 unsigned char addrspace
;
171 /* True if OFFSET is known. */
174 /* True if SIZE is known. */
178 /* Structure used to describe the attributes of a REG in similar way as
179 mem_attrs does for MEM above. Note that the OFFSET field is calculated
180 in the same way as for mem_attrs, rather than in the same way as a
181 SUBREG_BYTE. For example, if a big-endian target stores a byte
182 object in the low part of a 4-byte register, the OFFSET field
183 will be -3 rather than 0. */
185 struct GTY(()) reg_attrs
{
186 tree decl
; /* decl corresponding to REG. */
187 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
190 /* Common union for an element of an rtx. */
195 unsigned int rt_uint
;
199 enum machine_mode rt_type
;
200 addr_diff_vec_flags rt_addr_diff_vec_flags
;
201 struct cselib_val
*rt_cselib
;
206 struct constant_descriptor_rtx
*rt_constant
;
207 struct dw_cfi_node
*rt_cfi
;
210 /* This structure remembers the position of a SYMBOL_REF within an
211 object_block structure. A SYMBOL_REF only provides this information
212 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
213 struct GTY(()) block_symbol
{
214 /* The usual SYMBOL_REF fields. */
215 rtunion
GTY ((skip
)) fld
[2];
217 /* The block that contains this object. */
218 struct object_block
*block
;
220 /* The offset of this object from the start of its block. It is negative
221 if the symbol has not yet been assigned an offset. */
222 HOST_WIDE_INT offset
;
225 /* Describes a group of objects that are to be placed together in such
226 a way that their relative positions are known. */
227 struct GTY(()) object_block
{
228 /* The section in which these objects should be placed. */
231 /* The alignment of the first object, measured in bits. */
232 unsigned int alignment
;
234 /* The total size of the objects, measured in bytes. */
237 /* The SYMBOL_REFs for each object. The vector is sorted in
238 order of increasing offset and the following conditions will
239 hold for each element X:
241 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
242 !SYMBOL_REF_ANCHOR_P (X)
243 SYMBOL_REF_BLOCK (X) == [address of this structure]
244 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
245 vec
<rtx
, va_gc
> *objects
;
247 /* All the anchor SYMBOL_REFs used to address these objects, sorted
248 in order of increasing offset, and then increasing TLS model.
249 The following conditions will hold for each element X in this vector:
251 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
252 SYMBOL_REF_ANCHOR_P (X)
253 SYMBOL_REF_BLOCK (X) == [address of this structure]
254 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
255 vec
<rtx
, va_gc
> *anchors
;
258 struct GTY((variable_size
)) hwivec_def
{
259 HOST_WIDE_INT elem
[1];
262 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
263 #define CWI_GET_NUM_ELEM(RTX) \
264 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
265 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
266 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
268 /* RTL expression ("rtx"). */
270 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
271 field for for gengtype to recognize that inheritance is occurring,
272 so that all subclasses are redirected to the traversal hook for the
274 However, all of the fields are in the base class, and special-casing
275 is at work. Hence we use desc and tag of 0, generating a switch
276 statement of the form:
279 case 0: // all the work happens here
281 in order to work with the existing special-casing in gengtype. */
283 struct GTY((desc("0"), tag("0"),
284 chain_next ("RTX_NEXT (&%h)"),
285 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
286 /* The kind of expression this is. */
287 ENUM_BITFIELD(rtx_code
) code
: 16;
289 /* The kind of value the expression has. */
290 ENUM_BITFIELD(machine_mode
) mode
: 8;
292 /* 1 in a MEM if we should keep the alias set for this mem unchanged
293 when we access a component.
294 1 in a JUMP_INSN if it is a crossing jump.
295 1 in a CALL_INSN if it is a sibling call.
296 1 in a SET that is for a return.
297 In a CODE_LABEL, part of the two-bit alternate entry field.
298 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
299 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
300 1 in a SUBREG generated by LRA for reload insns. */
301 unsigned int jump
: 1;
302 /* In a CODE_LABEL, part of the two-bit alternate entry field.
303 1 in a MEM if it cannot trap.
304 1 in a CALL_INSN logically equivalent to
305 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
306 unsigned int call
: 1;
307 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
308 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
309 1 in a SYMBOL_REF if it addresses something in the per-function
311 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
312 1 in a NOTE, or EXPR_LIST for a const call.
313 1 in a JUMP_INSN of an annulling branch.
314 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
315 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
316 1 in a clobber temporarily created for LRA. */
317 unsigned int unchanging
: 1;
318 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
319 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
320 if it has been deleted.
321 1 in a REG expression if corresponds to a variable declared by the user,
322 0 for an internally generated temporary.
323 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
324 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
326 In a SYMBOL_REF, this flag is used for machine-specific purposes.
327 In a PREFETCH, this flag indicates that it should be considered a scheduling
329 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
330 unsigned int volatil
: 1;
331 /* 1 in a REG if the register is used only in exit code a loop.
332 1 in a SUBREG expression if was generated from a variable with a
334 1 in a CODE_LABEL if the label is used for nonlocal gotos
335 and must not be deleted even if its count is zero.
336 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
337 together with the preceding insn. Valid only within sched.
338 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
339 from the target of a branch. Valid from reorg until end of compilation;
342 The name of the field is historical. It used to be used in MEMs
343 to record whether the MEM accessed part of a structure. */
344 unsigned int in_struct
: 1;
345 /* At the end of RTL generation, 1 if this rtx is used. This is used for
346 copying shared structure. See `unshare_all_rtl'.
347 In a REG, this is not needed for that purpose, and used instead
348 in `leaf_renumber_regs_insn'.
349 1 in a SYMBOL_REF, means that emit_library_call
350 has used it as the function.
351 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
352 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
353 unsigned int used
: 1;
354 /* 1 in an INSN or a SET if this rtx is related to the call frame,
355 either changing how we compute the frame address or saving and
356 restoring registers in the prologue and epilogue.
357 1 in a REG or MEM if it is a pointer.
358 1 in a SYMBOL_REF if it addresses something in the per-function
359 constant string pool.
360 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
361 unsigned frame_related
: 1;
362 /* 1 in a REG or PARALLEL that is the current function's return value.
363 1 in a SYMBOL_REF for a weak symbol.
364 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
365 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
366 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
367 unsigned return_val
: 1;
370 /* The final union field is aligned to 64 bits on LP64 hosts,
371 giving a 32-bit gap after the fields above. We optimize the
372 layout for that case and use the gap for extra code-specific
375 /* The ORIGINAL_REGNO of a REG. */
376 unsigned int original_regno
;
378 /* The INSN_UID of an RTX_INSN-class code. */
381 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
382 unsigned int symbol_ref_flags
;
384 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
385 enum var_init_status var_location_status
;
387 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
388 HOST_WIDE_INTs in the hwivec_def. */
389 unsigned int num_elem
;
392 /* The first element of the operands of this rtx.
393 The number of operands and their types are controlled
394 by the `code' field, according to rtl.def. */
397 HOST_WIDE_INT hwint
[1];
398 struct block_symbol block_sym
;
399 struct real_value rv
;
400 struct fixed_value fv
;
401 struct hwivec_def hwiv
;
402 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
405 class GTY(()) rtx_insn
: public rtx_def
407 /* No extra fields, but adds the invariant:
411 || JUMP_TABLE_DATA_P (X)
415 i.e. that we must be able to use the following:
419 i.e. we have an rtx that has an INSN_UID field and can be part of
420 a linked list of insns.
424 /* Subclasses of rtx_insn. */
426 class GTY(()) rtx_debug_insn
: public rtx_insn
428 /* No extra fields, but adds the invariant:
429 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
430 i.e. an annotation for tracking variable assignments.
432 This is an instance of:
433 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
437 class GTY(()) rtx_nonjump_insn
: public rtx_insn
439 /* No extra fields, but adds the invariant:
440 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
441 i.e an instruction that cannot jump.
443 This is an instance of:
444 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
448 class GTY(()) rtx_jump_insn
: public rtx_insn
450 /* No extra fields, but adds the invariant:
451 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
452 i.e. an instruction that can possibly jump.
454 This is an instance of:
455 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
459 class GTY(()) rtx_call_insn
: public rtx_insn
461 /* No extra fields, but adds the invariant:
462 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
463 i.e. an instruction that can possibly call a subroutine
464 but which will not change which instruction comes next
465 in the current function.
467 This is an instance of:
468 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
472 class GTY(()) rtx_jump_table_data
: public rtx_insn
474 /* No extra fields, but adds the invariant:
475 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
476 i.e. a data for a jump table, considered an instruction for
479 This is an instance of:
480 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
485 /* This can be either:
487 (a) a table of absolute jumps, in which case PATTERN (this) is an
488 ADDR_VEC with arg 0 a vector of labels, or
490 (b) a table of relative jumps (e.g. for -fPIC), in which case
491 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
492 arg 1 the vector of labels.
494 This method gets the underlying vec. */
496 inline rtvec
get_labels () const;
499 class GTY(()) rtx_barrier
: public rtx_insn
501 /* No extra fields, but adds the invariant:
502 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
503 i.e. a marker that indicates that control will not flow through.
505 This is an instance of:
506 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
510 class GTY(()) rtx_code_label
: public rtx_insn
512 /* No extra fields, but adds the invariant:
513 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
514 i.e. a label in the assembler.
516 This is an instance of:
517 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
521 class GTY(()) rtx_note
: public rtx_insn
523 /* No extra fields, but adds the invariant:
524 NOTE_P(X) aka (GET_CODE (X) == NOTE)
525 i.e. a note about the corresponding source code.
527 This is an instance of:
528 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
532 /* The size in bytes of an rtx header (code, mode and flags). */
533 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
535 /* The size in bytes of an rtx with code CODE. */
536 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
538 #define NULL_RTX (rtx) 0
540 /* The "next" and "previous" RTX, relative to this one. */
542 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
543 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
545 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
547 #define RTX_PREV(X) ((INSN_P (X) \
549 || JUMP_TABLE_DATA_P (X) \
552 && PREV_INSN (X) != NULL \
553 && NEXT_INSN (PREV_INSN (X)) == X \
554 ? PREV_INSN (X) : NULL)
556 /* Define macros to access the `code' field of the rtx. */
558 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
559 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
561 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
562 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
564 /* RTL vector. These appear inside RTX's when there is a need
565 for a variable number of things. The principle use is inside
566 PARALLEL expressions. */
568 struct GTY(()) rtvec_def
{
569 int num_elem
; /* number of elements */
570 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
573 #define NULL_RTVEC (rtvec) 0
575 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
576 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
578 /* Predicate yielding nonzero iff X is an rtx for a register. */
579 #define REG_P(X) (GET_CODE (X) == REG)
581 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
582 #define MEM_P(X) (GET_CODE (X) == MEM)
584 #if TARGET_SUPPORTS_WIDE_INT
586 /* Match CONST_*s that can represent compile-time constant integers. */
587 #define CASE_CONST_SCALAR_INT \
591 /* Match CONST_*s for which pointer equality corresponds to value
593 #define CASE_CONST_UNIQUE \
595 case CONST_WIDE_INT: \
599 /* Match all CONST_* rtxes. */
600 #define CASE_CONST_ANY \
602 case CONST_WIDE_INT: \
609 /* Match CONST_*s that can represent compile-time constant integers. */
610 #define CASE_CONST_SCALAR_INT \
614 /* Match CONST_*s for which pointer equality corresponds to value
616 #define CASE_CONST_UNIQUE \
621 /* Match all CONST_* rtxes. */
622 #define CASE_CONST_ANY \
629 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
630 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
632 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
633 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
635 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
636 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
638 /* Predicate yielding true iff X is an rtx for a double-int
639 or floating point constant. */
640 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
642 /* Predicate yielding true iff X is an rtx for a double-int. */
643 #define CONST_DOUBLE_AS_INT_P(X) \
644 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
646 /* Predicate yielding true iff X is an rtx for a integer const. */
647 #if TARGET_SUPPORTS_WIDE_INT
648 #define CONST_SCALAR_INT_P(X) \
649 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
651 #define CONST_SCALAR_INT_P(X) \
652 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
655 /* Predicate yielding true iff X is an rtx for a double-int. */
656 #define CONST_DOUBLE_AS_FLOAT_P(X) \
657 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
659 /* Predicate yielding nonzero iff X is a label insn. */
660 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
662 /* Predicate yielding nonzero iff X is a jump insn. */
663 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
665 /* Predicate yielding nonzero iff X is a call insn. */
666 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
668 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
669 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
671 /* Predicate yielding nonzero iff X is a debug note/insn. */
672 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
674 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
675 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
677 /* Nonzero if DEBUG_INSN_P may possibly hold. */
678 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
680 /* Predicate yielding nonzero iff X is a real insn. */
682 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
684 /* Predicate yielding nonzero iff X is a note insn. */
685 #define NOTE_P(X) (GET_CODE (X) == NOTE)
687 /* Predicate yielding nonzero iff X is a barrier insn. */
688 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
690 /* Predicate yielding nonzero iff X is a data for a jump table. */
691 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
696 is_a_helper
<rtx_insn
*>::test (rtx rt
)
700 || JUMP_TABLE_DATA_P (rt
)
708 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
712 || JUMP_TABLE_DATA_P (rt
)
720 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
722 return DEBUG_INSN_P (rt
);
728 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
730 return NONJUMP_INSN_P (rt
);
736 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
744 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
752 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
754 return CALL_P (insn
);
760 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
762 return JUMP_TABLE_DATA_P (rt
);
768 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
770 return JUMP_TABLE_DATA_P (insn
);
776 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
778 return BARRIER_P (rt
);
784 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
792 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
794 return LABEL_P (insn
);
800 is_a_helper
<rtx_note
*>::test (rtx rt
)
808 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
810 return NOTE_P (insn
);
813 /* Predicate yielding nonzero iff X is a return or simple_return. */
814 #define ANY_RETURN_P(X) \
815 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
817 /* 1 if X is a unary operator. */
820 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
822 /* 1 if X is a binary operator. */
824 #define BINARY_P(X) \
825 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
827 /* 1 if X is an arithmetic operator. */
829 #define ARITHMETIC_P(X) \
830 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
831 == RTX_ARITHMETIC_RESULT)
833 /* 1 if X is an arithmetic operator. */
835 #define COMMUTATIVE_ARITH_P(X) \
836 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
838 /* 1 if X is a commutative arithmetic operator or a comparison operator.
839 These two are sometimes selected together because it is possible to
840 swap the two operands. */
842 #define SWAPPABLE_OPERANDS_P(X) \
843 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
844 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
845 | (1 << RTX_COMPARE)))
847 /* 1 if X is a non-commutative operator. */
849 #define NON_COMMUTATIVE_P(X) \
850 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
851 == RTX_NON_COMMUTATIVE_RESULT)
853 /* 1 if X is a commutative operator on integers. */
855 #define COMMUTATIVE_P(X) \
856 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
857 == RTX_COMMUTATIVE_RESULT)
859 /* 1 if X is a relational operator. */
861 #define COMPARISON_P(X) \
862 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
864 /* 1 if X is a constant value that is an integer. */
866 #define CONSTANT_P(X) \
867 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
869 /* 1 if X can be used to represent an object. */
870 #define OBJECT_P(X) \
871 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
873 /* General accessor macros for accessing the fields of an rtx. */
875 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
876 /* The bit with a star outside the statement expr and an & inside is
877 so that N can be evaluated only once. */
878 #define RTL_CHECK1(RTX, N, C1) __extension__ \
879 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
880 const enum rtx_code _code = GET_CODE (_rtx); \
881 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
882 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
884 if (GET_RTX_FORMAT (_code)[_n] != C1) \
885 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
887 &_rtx->u.fld[_n]; }))
889 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
890 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
891 const enum rtx_code _code = GET_CODE (_rtx); \
892 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
893 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
895 if (GET_RTX_FORMAT (_code)[_n] != C1 \
896 && GET_RTX_FORMAT (_code)[_n] != C2) \
897 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
899 &_rtx->u.fld[_n]; }))
901 #define RTL_CHECKC1(RTX, N, C) __extension__ \
902 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
903 if (GET_CODE (_rtx) != (C)) \
904 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
906 &_rtx->u.fld[_n]; }))
908 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
909 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
910 const enum rtx_code _code = GET_CODE (_rtx); \
911 if (_code != (C1) && _code != (C2)) \
912 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
914 &_rtx->u.fld[_n]; }))
916 #define RTVEC_ELT(RTVEC, I) __extension__ \
917 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
918 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
919 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
921 &_rtvec->elem[_i]; }))
923 #define XWINT(RTX, N) __extension__ \
924 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
925 const enum rtx_code _code = GET_CODE (_rtx); \
926 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
927 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
929 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
930 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
932 &_rtx->u.hwint[_n]; }))
934 #define CWI_ELT(RTX, I) __extension__ \
935 (*({ __typeof (RTX) const _cwi = (RTX); \
936 int _max = CWI_GET_NUM_ELEM (_cwi); \
937 const int _i = (I); \
938 if (_i < 0 || _i >= _max) \
939 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
941 &_cwi->u.hwiv.elem[_i]; }))
943 #define XCWINT(RTX, N, C) __extension__ \
944 (*({ __typeof (RTX) const _rtx = (RTX); \
945 if (GET_CODE (_rtx) != (C)) \
946 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
948 &_rtx->u.hwint[N]; }))
950 #define XCMWINT(RTX, N, C, M) __extension__ \
951 (*({ __typeof (RTX) const _rtx = (RTX); \
952 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
953 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
954 __LINE__, __FUNCTION__); \
955 &_rtx->u.hwint[N]; }))
957 #define XCNMPRV(RTX, C, M) __extension__ \
958 ({ __typeof (RTX) const _rtx = (RTX); \
959 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
960 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
961 __LINE__, __FUNCTION__); \
964 #define XCNMPFV(RTX, C, M) __extension__ \
965 ({ __typeof (RTX) const _rtx = (RTX); \
966 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
967 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
968 __LINE__, __FUNCTION__); \
971 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
972 ({ __typeof (RTX) const _symbol = (RTX); \
973 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
974 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
975 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
977 &_symbol->u.block_sym; })
979 #define HWIVEC_CHECK(RTX,C) __extension__ \
980 ({ __typeof (RTX) const _symbol = (RTX); \
981 RTL_CHECKC1 (_symbol, 0, C); \
984 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
987 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
990 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
993 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
996 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
997 const char *, int, const char *)
999 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, enum machine_mode
,
1000 bool, const char *, int, const char *)
1002 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1004 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1007 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1011 #else /* not ENABLE_RTL_CHECKING */
1013 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1014 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1015 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1016 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1017 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1018 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1019 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1020 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1021 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1022 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1023 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1024 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1025 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1026 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1030 /* General accessor macros for accessing the flags of an rtx. */
1032 /* Access an individual rtx flag, with no checking of any kind. */
1033 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1035 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1036 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1037 ({ __typeof (RTX) const _rtx = (RTX); \
1038 if (GET_CODE (_rtx) != C1) \
1039 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1043 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1044 ({ __typeof (RTX) const _rtx = (RTX); \
1045 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1046 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1050 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1051 ({ __typeof (RTX) const _rtx = (RTX); \
1052 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1053 && GET_CODE (_rtx) != C3) \
1054 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1058 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1059 ({ __typeof (RTX) const _rtx = (RTX); \
1060 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1061 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1062 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1066 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1067 ({ __typeof (RTX) const _rtx = (RTX); \
1068 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1069 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1070 && GET_CODE (_rtx) != C5) \
1071 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1075 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1077 ({ __typeof (RTX) const _rtx = (RTX); \
1078 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1079 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1080 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1081 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1085 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1087 ({ __typeof (RTX) const _rtx = (RTX); \
1088 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1089 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1090 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1091 && GET_CODE (_rtx) != C7) \
1092 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1096 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1098 ({ __typeof (RTX) const _rtx = (RTX); \
1099 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1100 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1104 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1109 #else /* not ENABLE_RTL_FLAG_CHECKING */
1111 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1112 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1113 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1114 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1115 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1116 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1117 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1118 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1121 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1122 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1123 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1124 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1125 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1126 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1127 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1128 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1129 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1130 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1132 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1133 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1135 /* These are like XINT, etc. except that they expect a '0' field instead
1136 of the normal type code. */
1138 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1139 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1140 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1141 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1142 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1143 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1144 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1145 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1146 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1147 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1148 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1149 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
1150 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1152 /* Access a '0' field with any type. */
1153 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1155 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1156 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1157 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1158 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1159 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1160 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1161 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1162 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1163 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1164 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1166 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1167 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1169 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1171 /* ACCESS MACROS for particular fields of insns. */
1173 /* Holds a unique number for each insn.
1174 These are not necessarily sequentially increasing. */
1175 #define INSN_UID(INSN) \
1176 (RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID", (INSN))->u2.insn_uid)
1178 /* Chain insns together in sequence. */
1180 /* For now these are split in two: an rvalue form:
1183 SET_NEXT_INSN/SET_PREV_INSN. */
1185 inline rtx_insn
*PREV_INSN (const_rtx insn
)
1187 rtx prev
= XEXP (insn
, 0);
1188 return safe_as_a
<rtx_insn
*> (prev
);
1191 inline rtx
& SET_PREV_INSN (rtx insn
)
1193 return XEXP (insn
, 0);
1196 inline rtx_insn
*NEXT_INSN (const_rtx insn
)
1198 rtx next
= XEXP (insn
, 1);
1199 return safe_as_a
<rtx_insn
*> (next
);
1202 inline rtx
& SET_NEXT_INSN (rtx insn
)
1204 return XEXP (insn
, 1);
1207 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 2)
1209 /* The body of an insn. */
1210 #define PATTERN(INSN) XEXP (INSN, 3)
1212 #define INSN_LOCATION(INSN) XUINT (INSN, 4)
1214 #define INSN_HAS_LOCATION(INSN) ((LOCATION_LOCUS (INSN_LOCATION (INSN)))\
1215 != UNKNOWN_LOCATION)
1217 /* LOCATION of an RTX if relevant. */
1218 #define RTL_LOCATION(X) (INSN_P (X) ? \
1219 INSN_LOCATION (X) : UNKNOWN_LOCATION)
1221 /* Code number of instruction, from when it was recognized.
1222 -1 means this instruction has not been recognized yet. */
1223 #define INSN_CODE(INSN) XINT (INSN, 5)
1225 inline rtvec
rtx_jump_table_data::get_labels () const
1227 rtx pat
= PATTERN (this);
1228 if (GET_CODE (pat
) == ADDR_VEC
)
1229 return XVEC (pat
, 0);
1231 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1234 #define RTX_FRAME_RELATED_P(RTX) \
1235 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1236 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1238 /* 1 if RTX is an insn that has been deleted. */
1239 #define INSN_DELETED_P(RTX) \
1240 (RTL_INSN_CHAIN_FLAG_CHECK ("INSN_DELETED_P", (RTX))->volatil)
1242 /* 1 if JUMP RTX is a crossing jump. */
1243 #define CROSSING_JUMP_P(RTX) \
1244 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1246 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1248 #define RTL_CONST_CALL_P(RTX) \
1249 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1251 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1253 #define RTL_PURE_CALL_P(RTX) \
1254 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1256 /* 1 if RTX is a call to a const or pure function. */
1257 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1258 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1260 /* 1 if RTX is a call to a looping const or pure function. Built from
1261 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1262 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1263 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1265 /* 1 if RTX is a call_insn for a sibling call. */
1266 #define SIBLING_CALL_P(RTX) \
1267 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1269 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1270 #define INSN_ANNULLED_BRANCH_P(RTX) \
1271 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1273 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1274 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1275 executed if the branch is taken. For annulled branches with this bit
1276 clear, the insn should be executed only if the branch is not taken. */
1277 #define INSN_FROM_TARGET_P(RTX) \
1278 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1279 CALL_INSN)->in_struct)
1281 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1282 See the comments for ADDR_DIFF_VEC in rtl.def. */
1283 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1285 /* In a VALUE, the value cselib has assigned to RTX.
1286 This is a "struct cselib_val", see cselib.h. */
1287 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1289 /* Holds a list of notes on what this insn does to various REGs.
1290 It is a chain of EXPR_LIST rtx's, where the second operand is the
1291 chain pointer and the first operand is the REG being described.
1292 The mode field of the EXPR_LIST contains not a real machine mode
1293 but a value from enum reg_note. */
1294 #define REG_NOTES(INSN) XEXP(INSN, 6)
1296 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1298 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1302 #define DEF_REG_NOTE(NAME) NAME,
1303 #include "reg-notes.def"
1308 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1309 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1310 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1311 PUT_MODE (LINK, (enum machine_mode) (KIND))
1313 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1315 extern const char * const reg_note_name
[];
1316 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1318 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1319 USE and CLOBBER expressions.
1320 USE expressions list the registers filled with arguments that
1321 are passed to the function.
1322 CLOBBER expressions document the registers explicitly clobbered
1324 Pseudo registers can not be mentioned in this list. */
1325 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1327 /* The label-number of a code-label. The assembler label
1328 is made from `L' and the label-number printed in decimal.
1329 Label numbers are unique in a compilation. */
1330 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1332 /* In a NOTE that is a line number, this is a string for the file name that the
1333 line is in. We use the same field to record block numbers temporarily in
1334 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1335 between ints and pointers if we use a different macro for the block number.)
1339 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1340 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1341 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1342 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1343 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1344 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1345 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1346 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1347 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1349 /* In a NOTE that is a line number, this is the line number.
1350 Other kinds of NOTEs are identified by negative numbers here. */
1351 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1353 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1354 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1355 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1357 /* Variable declaration and the location of a variable. */
1358 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1359 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1361 /* Initialization status of the variable in the location. Status
1362 can be unknown, uninitialized or initialized. See enumeration
1364 #define PAT_VAR_LOCATION_STATUS(PAT) \
1365 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1366 ->u2.var_location_status)
1368 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1369 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1370 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1371 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1372 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1373 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1374 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1376 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1377 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1379 /* Accessors for a tree-expanded var location debug insn. */
1380 #define INSN_VAR_LOCATION_DECL(INSN) \
1381 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1382 #define INSN_VAR_LOCATION_LOC(INSN) \
1383 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1384 #define INSN_VAR_LOCATION_STATUS(INSN) \
1385 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1387 /* Expand to the RTL that denotes an unknown variable location in a
1389 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1391 /* Determine whether X is such an unknown location. */
1392 #define VAR_LOC_UNKNOWN_P(X) \
1393 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1395 /* 1 if RTX is emitted after a call, but it should take effect before
1396 the call returns. */
1397 #define NOTE_DURING_CALL_P(RTX) \
1398 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1400 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1401 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1403 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1404 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1406 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1407 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1409 /* Codes that appear in the NOTE_KIND field for kinds of notes
1410 that are not line numbers. These codes are all negative.
1412 Notice that we do not try to use zero here for any of
1413 the special note codes because sometimes the source line
1414 actually can be zero! This happens (for example) when we
1415 are generating code for the per-translation-unit constructor
1416 and destructor routines for some C++ translation unit. */
1420 #define DEF_INSN_NOTE(NAME) NAME,
1421 #include "insn-notes.def"
1422 #undef DEF_INSN_NOTE
1427 /* Names for NOTE insn's other than line numbers. */
1429 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1430 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1431 (note_insn_name[(NOTE_CODE)])
1433 /* The name of a label, in case it corresponds to an explicit label
1434 in the input source code. */
1435 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1437 /* In jump.c, each label contains a count of the number
1438 of LABEL_REFs that point at it, so unused labels can be deleted. */
1439 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1441 /* Labels carry a two-bit field composed of the ->jump and ->call
1442 bits. This field indicates whether the label is an alternate
1443 entry point, and if so, what kind. */
1446 LABEL_NORMAL
= 0, /* ordinary label */
1447 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1448 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1449 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1452 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1454 /* Retrieve the kind of LABEL. */
1455 #define LABEL_KIND(LABEL) __extension__ \
1456 ({ __typeof (LABEL) const _label = (LABEL); \
1457 if (! LABEL_P (_label)) \
1458 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1460 (enum label_kind) ((_label->jump << 1) | _label->call); })
1462 /* Set the kind of LABEL. */
1463 #define SET_LABEL_KIND(LABEL, KIND) do { \
1464 __typeof (LABEL) const _label = (LABEL); \
1465 const unsigned int _kind = (KIND); \
1466 if (! LABEL_P (_label)) \
1467 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1469 _label->jump = ((_kind >> 1) & 1); \
1470 _label->call = (_kind & 1); \
1475 /* Retrieve the kind of LABEL. */
1476 #define LABEL_KIND(LABEL) \
1477 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1479 /* Set the kind of LABEL. */
1480 #define SET_LABEL_KIND(LABEL, KIND) do { \
1481 rtx const _label = (LABEL); \
1482 const unsigned int _kind = (KIND); \
1483 _label->jump = ((_kind >> 1) & 1); \
1484 _label->call = (_kind & 1); \
1487 #endif /* rtl flag checking */
1489 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1491 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1492 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1493 be decremented and possibly the label can be deleted. */
1494 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1496 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1497 goes through all the LABEL_REFs that jump to that label. The chain
1498 eventually winds up at the CODE_LABEL: it is circular. */
1499 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1501 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1502 be used on RHS. Use SET_REGNO to change the value. */
1503 #define REGNO(RTX) (rhs_regno(RTX))
1504 #define SET_REGNO(RTX,N) \
1505 (df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
1506 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
1508 /* ORIGINAL_REGNO holds the number the register originally had; for a
1509 pseudo register turned into a hard reg this will hold the old pseudo
1511 #define ORIGINAL_REGNO(RTX) \
1512 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1514 /* Force the REGNO macro to only be used on the lhs. */
1515 static inline unsigned int
1516 rhs_regno (const_rtx x
)
1518 return XCUINT (x
, 0, REG
);
1522 /* 1 if RTX is a reg or parallel that is the current function's return
1524 #define REG_FUNCTION_VALUE_P(RTX) \
1525 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1527 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1528 #define REG_USERVAR_P(RTX) \
1529 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1531 /* 1 if RTX is a reg that holds a pointer value. */
1532 #define REG_POINTER(RTX) \
1533 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1535 /* 1 if RTX is a mem that holds a pointer value. */
1536 #define MEM_POINTER(RTX) \
1537 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1539 /* 1 if the given register REG corresponds to a hard register. */
1540 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1542 /* 1 if the given register number REG_NO corresponds to a hard register. */
1543 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1545 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1546 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1547 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1549 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1550 elements actually needed to represent the constant.
1551 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1552 significant HOST_WIDE_INT. */
1553 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1554 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1555 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1557 /* For a CONST_DOUBLE:
1558 #if TARGET_SUPPORTS_WIDE_INT == 0
1559 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1560 low-order word and ..._HIGH the high-order.
1562 For a float, there is a REAL_VALUE_TYPE structure, and
1563 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1564 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1565 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1566 #define CONST_DOUBLE_REAL_VALUE(r) \
1567 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1569 #define CONST_FIXED_VALUE(r) \
1570 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1571 #define CONST_FIXED_VALUE_HIGH(r) \
1572 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1573 #define CONST_FIXED_VALUE_LOW(r) \
1574 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1576 /* For a CONST_VECTOR, return element #n. */
1577 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1579 /* For a CONST_VECTOR, return the number of elements in a vector. */
1580 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1582 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1583 SUBREG_BYTE extracts the byte-number. */
1585 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1586 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1589 /* Return the right cost to give to an operation
1590 to make the cost of the corresponding register-to-register instruction
1591 N times that of a fast register-to-register instruction. */
1592 #define COSTS_N_INSNS(N) ((N) * 4)
1594 /* Maximum cost of an rtl expression. This value has the special meaning
1595 not to use an rtx with this cost under any circumstances. */
1596 #define MAX_COST INT_MAX
1598 /* A structure to hold all available cost information about an rtl
1600 struct full_rtx_costs
1606 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1608 init_costs_to_max (struct full_rtx_costs
*c
)
1610 c
->speed
= MAX_COST
;
1614 /* Initialize a full_rtx_costs structure C to zero cost. */
1616 init_costs_to_zero (struct full_rtx_costs
*c
)
1622 /* Compare two full_rtx_costs structures A and B, returning true
1623 if A < B when optimizing for speed. */
1625 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1629 return (a
->speed
< b
->speed
1630 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1632 return (a
->size
< b
->size
1633 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1636 /* Increase both members of the full_rtx_costs structure C by the
1639 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1641 c
->speed
+= COSTS_N_INSNS (n
);
1642 c
->size
+= COSTS_N_INSNS (n
);
1645 /* Information about an address. This structure is supposed to be able
1646 to represent all supported target addresses. Please extend it if it
1647 is not yet general enough. */
1648 struct address_info
{
1649 /* The mode of the value being addressed, or VOIDmode if this is
1650 a load-address operation with no known address mode. */
1651 enum machine_mode mode
;
1653 /* The address space. */
1656 /* A pointer to the top-level address. */
1659 /* A pointer to the inner address, after all address mutations
1660 have been stripped from the top-level address. It can be one
1663 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
1665 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
1666 points to the step value, depending on whether the step is variable
1667 or constant respectively. SEGMENT is null.
1669 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
1670 with null fields evaluating to 0. */
1673 /* Components that make up *INNER. Each one may be null or nonnull.
1674 When nonnull, their meanings are as follows:
1676 - *SEGMENT is the "segment" of memory to which the address refers.
1677 This value is entirely target-specific and is only called a "segment"
1678 because that's its most typical use. It contains exactly one UNSPEC,
1679 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
1682 - *BASE is a variable expression representing a base address.
1683 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
1685 - *INDEX is a variable expression representing an index value.
1686 It may be a scaled expression, such as a MULT. It has exactly
1687 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
1689 - *DISP is a constant, possibly mutated. DISP_TERM points to the
1690 unmutated RTX_CONST_OBJ. */
1701 /* In a {PRE,POST}_MODIFY address, this points to a second copy
1702 of BASE_TERM, otherwise it is null. */
1705 /* ADDRESS if this structure describes an address operand, MEM if
1706 it describes a MEM address. */
1707 enum rtx_code addr_outer_code
;
1709 /* If BASE is nonnull, this is the code of the rtx that contains it. */
1710 enum rtx_code base_outer_code
;
1712 /* True if this is an RTX_AUTOINC address. */
1716 /* This is used to bundle an rtx and a mode together so that the pair
1717 can be used with the wi:: routines. If we ever put modes into rtx
1718 integer constants, this should go away and then just pass an rtx in. */
1719 typedef std::pair
<rtx
, enum machine_mode
> rtx_mode_t
;
1724 struct int_traits
<rtx_mode_t
>
1726 static const enum precision_type precision_type
= VAR_PRECISION
;
1727 static const bool host_dependent_precision
= false;
1728 /* This ought to be true, except for the special case that BImode
1729 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
1730 static const bool is_sign_extended
= false;
1731 static unsigned int get_precision (const rtx_mode_t
&);
1732 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
1733 const rtx_mode_t
&);
1738 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
1740 return GET_MODE_PRECISION (x
.second
);
1743 inline wi::storage_ref
1744 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
1745 unsigned int precision
,
1746 const rtx_mode_t
&x
)
1748 gcc_checking_assert (precision
== get_precision (x
));
1749 switch (GET_CODE (x
.first
))
1752 if (precision
< HOST_BITS_PER_WIDE_INT
)
1753 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
1754 targets is 1 rather than -1. */
1755 gcc_checking_assert (INTVAL (x
.first
)
1756 == sext_hwi (INTVAL (x
.first
), precision
)
1757 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
1759 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
1761 case CONST_WIDE_INT
:
1762 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
1763 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
1765 #if TARGET_SUPPORTS_WIDE_INT == 0
1767 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
1777 hwi_with_prec
shwi (HOST_WIDE_INT
, enum machine_mode mode
);
1778 wide_int
min_value (enum machine_mode
, signop
);
1779 wide_int
max_value (enum machine_mode
, signop
);
1782 inline wi::hwi_with_prec
1783 wi::shwi (HOST_WIDE_INT val
, enum machine_mode mode
)
1785 return shwi (val
, GET_MODE_PRECISION (mode
));
1788 /* Produce the smallest number that is represented in MODE. The precision
1789 is taken from MODE and the sign from SGN. */
1791 wi::min_value (enum machine_mode mode
, signop sgn
)
1793 return min_value (GET_MODE_PRECISION (mode
), sgn
);
1796 /* Produce the largest number that is represented in MODE. The precision
1797 is taken from MODE and the sign from SGN. */
1799 wi::max_value (enum machine_mode mode
, signop sgn
)
1801 return max_value (GET_MODE_PRECISION (mode
), sgn
);
1804 extern void init_rtlanal (void);
1805 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
1806 extern int address_cost (rtx
, enum machine_mode
, addr_space_t
, bool);
1807 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
1808 struct full_rtx_costs
*);
1809 extern unsigned int subreg_lsb (const_rtx
);
1810 extern unsigned int subreg_lsb_1 (enum machine_mode
, enum machine_mode
,
1812 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode
,
1813 unsigned int, enum machine_mode
);
1814 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode
,
1815 unsigned int, enum machine_mode
);
1816 extern unsigned int subreg_regno (const_rtx
);
1817 extern int simplify_subreg_regno (unsigned int, enum machine_mode
,
1818 unsigned int, enum machine_mode
);
1819 extern unsigned int subreg_nregs (const_rtx
);
1820 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
1821 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, enum machine_mode
);
1822 extern unsigned int num_sign_bit_copies (const_rtx
, enum machine_mode
);
1823 extern bool constant_pool_constant_p (rtx
);
1824 extern bool truncated_to_mode (enum machine_mode
, const_rtx
);
1825 extern int low_bitmask_len (enum machine_mode
, unsigned HOST_WIDE_INT
);
1826 extern void split_double (rtx
, rtx
*, rtx
*);
1827 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
1828 extern void decompose_address (struct address_info
*, rtx
*,
1829 enum machine_mode
, addr_space_t
, enum rtx_code
);
1830 extern void decompose_lea_address (struct address_info
*, rtx
*);
1831 extern void decompose_mem_address (struct address_info
*, rtx
);
1832 extern void update_address (struct address_info
*);
1833 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
1834 extern enum rtx_code
get_index_code (const struct address_info
*);
1836 #ifndef GENERATOR_FILE
1837 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
1838 rather than size. */
1841 set_rtx_cost (rtx x
, bool speed_p
)
1843 return rtx_cost (x
, INSN
, 4, speed_p
);
1846 /* Like set_rtx_cost, but return both the speed and size costs in C. */
1849 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
1851 get_full_rtx_cost (x
, INSN
, 4, c
);
1854 /* Return the cost of moving X into a register, relative to the cost
1855 of a register move. SPEED_P is true if optimizing for speed rather
1859 set_src_cost (rtx x
, bool speed_p
)
1861 return rtx_cost (x
, SET
, 1, speed_p
);
1864 /* Like set_src_cost, but return both the speed and size costs in C. */
1867 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
1869 get_full_rtx_cost (x
, SET
, 1, c
);
1873 /* 1 if RTX is a subreg containing a reg that is already known to be
1874 sign- or zero-extended from the mode of the subreg to the mode of
1875 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
1878 When used as a LHS, is means that this extension must be done
1879 when assigning to SUBREG_REG. */
1881 #define SUBREG_PROMOTED_VAR_P(RTX) \
1882 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
1884 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
1885 this gives the necessary extensions:
1886 0 - signed (SPR_SIGNED)
1887 1 - normal unsigned (SPR_UNSIGNED)
1888 2 - value is both sign and unsign extended for mode
1889 (SPR_SIGNED_AND_UNSIGNED).
1890 -1 - pointer unsigned, which most often can be handled like unsigned
1891 extension, except for generating instructions where we need to
1892 emit special code (ptr_extend insns) on some architectures
1895 const int SRP_POINTER
= -1;
1896 const int SRP_SIGNED
= 0;
1897 const int SRP_UNSIGNED
= 1;
1898 const int SRP_SIGNED_AND_UNSIGNED
= 2;
1900 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
1901 #define SUBREG_PROMOTED_SET(RTX, VAL) \
1903 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
1908 _rtx->volatil = 0; \
1909 _rtx->unchanging = 0; \
1912 _rtx->volatil = 0; \
1913 _rtx->unchanging = 1; \
1915 case SRP_UNSIGNED: \
1916 _rtx->volatil = 1; \
1917 _rtx->unchanging = 0; \
1919 case SRP_SIGNED_AND_UNSIGNED: \
1920 _rtx->volatil = 1; \
1921 _rtx->unchanging = 1; \
1926 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
1927 including SRP_SIGNED_AND_UNSIGNED if promoted for
1928 both signed and unsigned. */
1929 #define SUBREG_PROMOTED_GET(RTX) \
1930 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
1931 + (RTX)->unchanging - 1)
1933 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
1934 #define SUBREG_PROMOTED_SIGN(RTX) \
1935 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
1936 : (RTX)->unchanging - 1)
1938 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
1940 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
1941 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
1943 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
1944 for UNSIGNED type. */
1945 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
1946 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
1948 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
1949 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
1950 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
1951 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
1952 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
1954 /* True if the subreg was generated by LRA for reload insns. Such
1955 subregs are valid only during LRA. */
1956 #define LRA_SUBREG_P(RTX) \
1957 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
1959 /* Access various components of an ASM_OPERANDS rtx. */
1961 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
1962 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
1963 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
1964 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
1965 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
1966 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
1967 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
1968 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
1969 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
1970 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
1971 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
1972 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
1973 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
1974 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
1975 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
1976 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
1977 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
1978 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
1980 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
1981 #define MEM_READONLY_P(RTX) \
1982 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
1984 /* 1 if RTX is a mem and we should keep the alias set for this mem
1985 unchanged when we access a component. Set to 1, or example, when we
1986 are already in a non-addressable component of an aggregate. */
1987 #define MEM_KEEP_ALIAS_SET_P(RTX) \
1988 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
1990 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
1991 #define MEM_VOLATILE_P(RTX) \
1992 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
1993 ASM_INPUT)->volatil)
1995 /* 1 if RTX is a mem that cannot trap. */
1996 #define MEM_NOTRAP_P(RTX) \
1997 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
1999 /* The memory attribute block. We provide access macros for each value
2000 in the block and provide defaults if none specified. */
2001 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2003 /* The register attribute block. We provide access macros for each value
2004 in the block and provide defaults if none specified. */
2005 #define REG_ATTRS(RTX) X0REGATTR (RTX, 1)
2007 #ifndef GENERATOR_FILE
2008 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2009 set, and may alias anything. Otherwise, the MEM can only alias
2010 MEMs in a conflicting alias set. This value is set in a
2011 language-dependent manner in the front-end, and should not be
2012 altered in the back-end. These set numbers are tested with
2013 alias_sets_conflict_p. */
2014 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2016 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2017 refer to part of a DECL. It may also be a COMPONENT_REF. */
2018 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2020 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2021 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2023 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2024 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2026 /* For a MEM rtx, the address space. */
2027 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2029 /* For a MEM rtx, true if its MEM_SIZE is known. */
2030 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2032 /* For a MEM rtx, the size in bytes of the MEM. */
2033 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2035 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2036 mode as a default when STRICT_ALIGNMENT, but not if not. */
2037 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2039 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2042 /* For a REG rtx, the decl it is known to refer to, if it is known to
2043 refer to part of a DECL. */
2044 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2046 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2048 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2050 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2051 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2052 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2053 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2054 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2055 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2056 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2057 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2059 /* 1 if RTX is a label_ref for a nonlocal label. */
2060 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2061 REG_LABEL_TARGET note. */
2062 #define LABEL_REF_NONLOCAL_P(RTX) \
2063 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2065 /* 1 if RTX is a code_label that should always be considered to be needed. */
2066 #define LABEL_PRESERVE_P(RTX) \
2067 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2069 /* During sched, 1 if RTX is an insn that must be scheduled together
2070 with the preceding insn. */
2071 #define SCHED_GROUP_P(RTX) \
2072 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2073 JUMP_INSN, CALL_INSN)->in_struct)
2075 /* For a SET rtx, SET_DEST is the place that is set
2076 and SET_SRC is the value it is set to. */
2077 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2078 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2079 #define SET_IS_RETURN_P(RTX) \
2080 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2082 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2083 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2084 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2086 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2087 conditionally executing the code on, COND_EXEC_CODE is the code
2088 to execute if the condition is true. */
2089 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2090 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2092 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2094 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2095 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2097 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2098 tree constant pool. This information is private to varasm.c. */
2099 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2100 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2101 (RTX), SYMBOL_REF)->frame_related)
2103 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2104 #define SYMBOL_REF_FLAG(RTX) \
2105 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2107 /* 1 if RTX is a symbol_ref that has been the library function in
2108 emit_library_call. */
2109 #define SYMBOL_REF_USED(RTX) \
2110 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2112 /* 1 if RTX is a symbol_ref for a weak symbol. */
2113 #define SYMBOL_REF_WEAK(RTX) \
2114 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2116 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2117 SYMBOL_REF_CONSTANT. */
2118 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2120 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2122 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2123 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2125 /* The tree (decl or constant) associated with the symbol, or null. */
2126 #define SYMBOL_REF_DECL(RTX) \
2127 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2129 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2130 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2131 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2133 /* The rtx constant pool entry for a symbol, or null. */
2134 #define SYMBOL_REF_CONSTANT(RTX) \
2135 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2137 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2138 information derivable from the tree decl associated with this symbol.
2139 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2140 decl. In some cases this is a bug. But beyond that, it's nice to cache
2141 this information to avoid recomputing it. Finally, this allows space for
2142 the target to store more than one bit of information, as with
2144 #define SYMBOL_REF_FLAGS(RTX) \
2145 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2146 ->u2.symbol_ref_flags)
2148 /* These flags are common enough to be defined for all targets. They
2149 are computed by the default version of targetm.encode_section_info. */
2151 /* Set if this symbol is a function. */
2152 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2153 #define SYMBOL_REF_FUNCTION_P(RTX) \
2154 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2155 /* Set if targetm.binds_local_p is true. */
2156 #define SYMBOL_FLAG_LOCAL (1 << 1)
2157 #define SYMBOL_REF_LOCAL_P(RTX) \
2158 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2159 /* Set if targetm.in_small_data_p is true. */
2160 #define SYMBOL_FLAG_SMALL (1 << 2)
2161 #define SYMBOL_REF_SMALL_P(RTX) \
2162 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2163 /* The three-bit field at [5:3] is true for TLS variables; use
2164 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2165 #define SYMBOL_FLAG_TLS_SHIFT 3
2166 #define SYMBOL_REF_TLS_MODEL(RTX) \
2167 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2168 /* Set if this symbol is not defined in this translation unit. */
2169 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2170 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2171 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2172 /* Set if this symbol has a block_symbol structure associated with it. */
2173 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2174 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2175 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2176 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2177 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2178 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2179 #define SYMBOL_REF_ANCHOR_P(RTX) \
2180 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2182 /* Subsequent bits are available for the target to use. */
2183 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2184 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2186 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2187 structure to which the symbol belongs, or NULL if it has not been
2188 assigned a block. */
2189 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2191 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2192 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2193 RTX has not yet been assigned to a block, or it has not been given an
2194 offset within that block. */
2195 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2197 /* True if RTX is flagged to be a scheduling barrier. */
2198 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2199 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2201 /* Indicate whether the machine has any sort of auto increment addressing.
2202 If not, we can avoid checking for REG_INC notes. */
2204 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2205 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2206 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2207 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2208 #define AUTO_INC_DEC
2211 /* Define a macro to look for REG_INC notes,
2212 but save time on machines where they never exist. */
2215 #define FIND_REG_INC_NOTE(INSN, REG) \
2216 ((REG) != NULL_RTX && REG_P ((REG)) \
2217 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2218 : find_reg_note ((INSN), REG_INC, (REG)))
2220 #define FIND_REG_INC_NOTE(INSN, REG) 0
2223 #ifndef HAVE_PRE_INCREMENT
2224 #define HAVE_PRE_INCREMENT 0
2227 #ifndef HAVE_PRE_DECREMENT
2228 #define HAVE_PRE_DECREMENT 0
2231 #ifndef HAVE_POST_INCREMENT
2232 #define HAVE_POST_INCREMENT 0
2235 #ifndef HAVE_POST_DECREMENT
2236 #define HAVE_POST_DECREMENT 0
2239 #ifndef HAVE_POST_MODIFY_DISP
2240 #define HAVE_POST_MODIFY_DISP 0
2243 #ifndef HAVE_POST_MODIFY_REG
2244 #define HAVE_POST_MODIFY_REG 0
2247 #ifndef HAVE_PRE_MODIFY_DISP
2248 #define HAVE_PRE_MODIFY_DISP 0
2251 #ifndef HAVE_PRE_MODIFY_REG
2252 #define HAVE_PRE_MODIFY_REG 0
2256 /* Some architectures do not have complete pre/post increment/decrement
2257 instruction sets, or only move some modes efficiently. These macros
2258 allow us to tune autoincrement generation. */
2260 #ifndef USE_LOAD_POST_INCREMENT
2261 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2264 #ifndef USE_LOAD_POST_DECREMENT
2265 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2268 #ifndef USE_LOAD_PRE_INCREMENT
2269 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2272 #ifndef USE_LOAD_PRE_DECREMENT
2273 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2276 #ifndef USE_STORE_POST_INCREMENT
2277 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2280 #ifndef USE_STORE_POST_DECREMENT
2281 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2284 #ifndef USE_STORE_PRE_INCREMENT
2285 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2288 #ifndef USE_STORE_PRE_DECREMENT
2289 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2292 /* Nonzero when we are generating CONCATs. */
2293 extern int generating_concat_p
;
2295 /* Nonzero when we are expanding trees to RTL. */
2296 extern int currently_expanding_to_rtl
;
2298 /* Generally useful functions. */
2301 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, enum machine_mode
);
2302 extern rtx
plus_constant (enum machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2305 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
2306 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2307 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2308 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2309 #define const_wide_int_alloc(NWORDS) \
2310 rtx_alloc_v (CONST_WIDE_INT, \
2311 (sizeof (struct hwivec_def) \
2312 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2314 extern rtvec rtvec_alloc (int);
2315 extern rtvec
shallow_copy_rtvec (rtvec
);
2316 extern bool shared_const_p (const_rtx
);
2317 extern rtx
copy_rtx (rtx
);
2318 extern void dump_rtx_statistics (void);
2321 extern rtx
copy_rtx_if_shared (rtx
);
2324 extern unsigned int rtx_size (const_rtx
);
2325 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
2326 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2327 extern int rtx_equal_p (const_rtx
, const_rtx
);
2330 extern rtvec
gen_rtvec_v (int, rtx
*);
2331 extern rtx
gen_reg_rtx (enum machine_mode
);
2332 extern rtx
gen_rtx_REG_offset (rtx
, enum machine_mode
, unsigned int, int);
2333 extern rtx
gen_reg_rtx_offset (rtx
, enum machine_mode
, int);
2334 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2335 extern rtx_code_label
*gen_label_rtx (void);
2336 extern rtx
gen_lowpart_common (enum machine_mode
, rtx
);
2339 extern rtx
gen_lowpart_if_possible (enum machine_mode
, rtx
);
2342 extern rtx
gen_highpart (enum machine_mode
, rtx
);
2343 extern rtx
gen_highpart_mode (enum machine_mode
, enum machine_mode
, rtx
);
2344 extern rtx
operand_subword (rtx
, unsigned int, int, enum machine_mode
);
2347 extern rtx
operand_subword_force (rtx
, unsigned int, enum machine_mode
);
2348 extern bool paradoxical_subreg_p (const_rtx
);
2349 extern int subreg_lowpart_p (const_rtx
);
2350 extern unsigned int subreg_lowpart_offset (enum machine_mode
,
2352 extern unsigned int subreg_highpart_offset (enum machine_mode
,
2354 extern int byte_lowpart_offset (enum machine_mode
, enum machine_mode
);
2355 extern rtx
make_safe_from (rtx
, rtx
);
2356 extern rtx
convert_memory_address_addr_space (enum machine_mode
, rtx
,
2358 #define convert_memory_address(to_mode,x) \
2359 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2360 extern const char *get_insn_name (int);
2361 extern rtx_insn
*get_last_insn_anywhere (void);
2362 extern rtx
get_first_nonnote_insn (void);
2363 extern rtx
get_last_nonnote_insn (void);
2364 extern void start_sequence (void);
2365 extern void push_to_sequence (rtx_insn
*);
2366 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
2367 extern void end_sequence (void);
2368 #if TARGET_SUPPORTS_WIDE_INT == 0
2369 extern double_int
rtx_to_double_int (const_rtx
);
2371 extern void cwi_output_hex (FILE *, const_rtx
);
2372 #ifndef GENERATOR_FILE
2373 extern rtx
immed_wide_int_const (const wide_int_ref
&, enum machine_mode
);
2375 #if TARGET_SUPPORTS_WIDE_INT == 0
2376 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
2382 extern rtx
lowpart_subreg (enum machine_mode
, rtx
, enum machine_mode
);
2385 extern rtx
force_const_mem (enum machine_mode
, rtx
);
2390 extern rtx
get_pool_constant (rtx
);
2391 extern rtx
get_pool_constant_mark (rtx
, bool *);
2392 extern enum machine_mode
get_pool_mode (const_rtx
);
2393 extern rtx
simplify_subtraction (rtx
);
2394 extern void decide_function_section (tree
);
2397 extern rtx
assign_stack_local (enum machine_mode
, HOST_WIDE_INT
, int);
2398 #define ASLK_REDUCE_ALIGN 1
2399 #define ASLK_RECORD_PAD 2
2400 extern rtx
assign_stack_local_1 (enum machine_mode
, HOST_WIDE_INT
, int, int);
2401 extern rtx
assign_stack_temp (enum machine_mode
, HOST_WIDE_INT
);
2402 extern rtx
assign_stack_temp_for_type (enum machine_mode
, HOST_WIDE_INT
, tree
);
2403 extern rtx
assign_temp (tree
, int, int);
2406 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
2407 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx
, basic_block
);
2408 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx
, int);
2409 extern rtx_insn
*emit_jump_insn_before (rtx
, rtx
);
2410 extern rtx_insn
*emit_jump_insn_before_noloc (rtx
, rtx
);
2411 extern rtx_insn
*emit_jump_insn_before_setloc (rtx
, rtx
, int);
2412 extern rtx_insn
*emit_call_insn_before (rtx
, rtx
);
2413 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx
);
2414 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx
, int);
2415 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx
);
2416 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
2417 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
2418 extern rtx_barrier
*emit_barrier_before (rtx
);
2419 extern rtx_insn
*emit_label_before (rtx
, rtx
);
2420 extern rtx_note
*emit_note_before (enum insn_note
, rtx
);
2421 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
2422 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
2423 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
2424 extern rtx_insn
*emit_jump_insn_after (rtx
, rtx
);
2425 extern rtx_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
2426 extern rtx_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
2427 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
2428 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
2429 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
2430 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
2431 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
2432 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
2433 extern rtx_barrier
*emit_barrier_after (rtx
);
2434 extern rtx_insn
*emit_label_after (rtx
, rtx
);
2435 extern rtx_note
*emit_note_after (enum insn_note
, rtx
);
2436 extern rtx_insn
*emit_insn (rtx
);
2437 extern rtx_insn
*emit_debug_insn (rtx
);
2438 extern rtx_insn
*emit_jump_insn (rtx
);
2439 extern rtx_insn
*emit_call_insn (rtx
);
2440 extern rtx_insn
*emit_label (rtx
);
2441 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
2442 extern rtx_barrier
*emit_barrier (void);
2443 extern rtx_note
*emit_note (enum insn_note
);
2444 extern rtx_note
*emit_note_copy (rtx_note
*);
2445 extern rtx_insn
*gen_clobber (rtx
);
2446 extern rtx_insn
*emit_clobber (rtx
);
2447 extern rtx_insn
*gen_use (rtx
);
2448 extern rtx_insn
*emit_use (rtx
);
2449 extern rtx_insn
*make_insn_raw (rtx
);
2450 extern void add_function_usage_to (rtx
, rtx
);
2451 extern rtx_call_insn
*last_call_insn (void);
2452 extern rtx_insn
*previous_insn (rtx
);
2453 extern rtx_insn
*next_insn (rtx
);
2454 extern rtx_insn
*prev_nonnote_insn (rtx
);
2455 extern rtx_insn
*prev_nonnote_insn_bb (rtx
);
2456 extern rtx_insn
*next_nonnote_insn (rtx
);
2457 extern rtx_insn
*next_nonnote_insn_bb (rtx
);
2458 extern rtx_insn
*prev_nondebug_insn (rtx
);
2459 extern rtx_insn
*next_nondebug_insn (rtx
);
2460 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx
);
2461 extern rtx_insn
*next_nonnote_nondebug_insn (rtx
);
2462 extern rtx_insn
*prev_real_insn (rtx
);
2463 extern rtx_insn
*next_real_insn (rtx
);
2464 extern rtx_insn
*prev_active_insn (rtx
);
2465 extern rtx_insn
*next_active_insn (rtx
);
2466 extern int active_insn_p (const_rtx
);
2467 extern rtx_insn
*next_cc0_user (rtx
);
2468 extern rtx_insn
*prev_cc0_setter (rtx
);
2471 extern int insn_line (const_rtx
);
2472 extern const char * insn_file (const_rtx
);
2473 extern tree
insn_scope (const_rtx
);
2474 extern expanded_location
insn_location (const_rtx
);
2475 extern location_t prologue_location
, epilogue_location
;
2478 extern enum rtx_code
reverse_condition (enum rtx_code
);
2479 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
2480 extern enum rtx_code
swap_condition (enum rtx_code
);
2481 extern enum rtx_code
unsigned_condition (enum rtx_code
);
2482 extern enum rtx_code
signed_condition (enum rtx_code
);
2483 extern void mark_jump_label (rtx
, rtx
, int);
2486 extern rtx_insn
*delete_related_insns (rtx
);
2489 extern rtx
*find_constant_term_loc (rtx
*);
2492 extern rtx_insn
*try_split (rtx
, rtx
, int);
2493 extern int split_branch_probability
;
2495 /* In unknown file */
2496 extern rtx
split_insns (rtx
, rtx
);
2498 /* In simplify-rtx.c */
2499 extern rtx
simplify_const_unary_operation (enum rtx_code
, enum machine_mode
,
2500 rtx
, enum machine_mode
);
2501 extern rtx
simplify_unary_operation (enum rtx_code
, enum machine_mode
, rtx
,
2503 extern rtx
simplify_const_binary_operation (enum rtx_code
, enum machine_mode
,
2505 extern rtx
simplify_binary_operation (enum rtx_code
, enum machine_mode
, rtx
,
2507 extern rtx
simplify_ternary_operation (enum rtx_code
, enum machine_mode
,
2508 enum machine_mode
, rtx
, rtx
, rtx
);
2509 extern rtx
simplify_const_relational_operation (enum rtx_code
,
2510 enum machine_mode
, rtx
, rtx
);
2511 extern rtx
simplify_relational_operation (enum rtx_code
, enum machine_mode
,
2512 enum machine_mode
, rtx
, rtx
);
2513 extern rtx
simplify_gen_binary (enum rtx_code
, enum machine_mode
, rtx
, rtx
);
2514 extern rtx
simplify_gen_unary (enum rtx_code
, enum machine_mode
, rtx
,
2516 extern rtx
simplify_gen_ternary (enum rtx_code
, enum machine_mode
,
2517 enum machine_mode
, rtx
, rtx
, rtx
);
2518 extern rtx
simplify_gen_relational (enum rtx_code
, enum machine_mode
,
2519 enum machine_mode
, rtx
, rtx
);
2520 extern rtx
simplify_subreg (enum machine_mode
, rtx
, enum machine_mode
,
2522 extern rtx
simplify_gen_subreg (enum machine_mode
, rtx
, enum machine_mode
,
2524 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
2525 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
2526 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
2527 extern rtx
simplify_rtx (const_rtx
);
2528 extern rtx
avoid_constant_pool_reference (rtx
);
2529 extern rtx
delegitimize_mem_from_attrs (rtx
);
2530 extern bool mode_signbit_p (enum machine_mode
, const_rtx
);
2531 extern bool val_signbit_p (enum machine_mode
, unsigned HOST_WIDE_INT
);
2532 extern bool val_signbit_known_set_p (enum machine_mode
,
2533 unsigned HOST_WIDE_INT
);
2534 extern bool val_signbit_known_clear_p (enum machine_mode
,
2535 unsigned HOST_WIDE_INT
);
2538 extern enum machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
2542 extern rtx
set_for_reg_notes (rtx
);
2543 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
2544 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
2545 extern void set_insn_deleted (rtx
);
2547 /* Functions in rtlanal.c */
2549 /* Single set is implemented as macro for performance reasons. */
2550 #define single_set(I) (INSN_P (I) \
2551 ? (GET_CODE (PATTERN (I)) == SET \
2552 ? PATTERN (I) : single_set_1 (I)) \
2554 #define single_set_1(I) single_set_2 (I, PATTERN (I))
2556 /* Structure used for passing data to REPLACE_LABEL. */
2557 struct replace_label_data
2561 bool update_label_nuses
;
2564 extern enum machine_mode
get_address_mode (rtx mem
);
2565 extern int rtx_addr_can_trap_p (const_rtx
);
2566 extern bool nonzero_address_p (const_rtx
);
2567 extern int rtx_unstable_p (const_rtx
);
2568 extern bool rtx_varies_p (const_rtx
, bool);
2569 extern bool rtx_addr_varies_p (const_rtx
, bool);
2570 extern rtx
get_call_rtx_from (rtx
);
2571 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2572 extern rtx
get_related_value (const_rtx
);
2573 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2574 extern void split_const (rtx
, rtx
*, rtx
*);
2575 extern bool unsigned_reg_p (rtx
);
2576 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2577 extern int count_occurrences (const_rtx
, const_rtx
, int);
2578 extern int reg_referenced_p (const_rtx
, const_rtx
);
2579 extern int reg_used_between_p (const_rtx
, const_rtx
, const_rtx
);
2580 extern int reg_set_between_p (const_rtx
, const_rtx
, const_rtx
);
2581 extern int commutative_operand_precedence (rtx
);
2582 extern bool swap_commutative_operands_p (rtx
, rtx
);
2583 extern int modified_between_p (const_rtx
, const_rtx
, const_rtx
);
2584 extern int no_labels_between_p (const_rtx
, const_rtx
);
2585 extern int modified_in_p (const_rtx
, const_rtx
);
2586 extern int reg_set_p (const_rtx
, const_rtx
);
2587 extern rtx
single_set_2 (const_rtx
, const_rtx
);
2588 extern int multiple_sets (const_rtx
);
2589 extern int set_noop_p (const_rtx
);
2590 extern int noop_move_p (const_rtx
);
2591 extern rtx
find_last_value (rtx
, rtx
*, rtx
, int);
2592 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2593 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2594 extern const_rtx
set_of (const_rtx
, const_rtx
);
2595 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2596 extern void record_hard_reg_uses (rtx
*, void *);
2598 extern void find_all_hard_reg_sets (const_rtx
, HARD_REG_SET
*, bool);
2600 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2601 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2602 extern int dead_or_set_p (const_rtx
, const_rtx
);
2603 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2604 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2605 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2606 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2607 extern rtx
find_constant_src (const_rtx
);
2608 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2609 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2610 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2611 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2612 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2613 extern void add_shallow_copy_of_reg_note (rtx
, rtx
);
2614 extern void remove_note (rtx
, const_rtx
);
2615 extern void remove_reg_equal_equiv_notes (rtx
);
2616 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2617 extern int side_effects_p (const_rtx
);
2618 extern int volatile_refs_p (const_rtx
);
2619 extern int volatile_insn_p (const_rtx
);
2620 extern int may_trap_p_1 (const_rtx
, unsigned);
2621 extern int may_trap_p (const_rtx
);
2622 extern int may_trap_or_fault_p (const_rtx
);
2623 extern bool can_throw_internal (const_rtx
);
2624 extern bool can_throw_external (const_rtx
);
2625 extern bool insn_could_throw_p (const_rtx
);
2626 extern bool insn_nothrow_p (const_rtx
);
2627 extern bool can_nonlocal_goto (const_rtx
);
2628 extern void copy_reg_eh_region_note_forward (rtx
, rtx
, rtx
);
2629 extern void copy_reg_eh_region_note_backward (rtx
, rtx
, rtx
);
2630 extern int inequality_comparisons_p (const_rtx
);
2631 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2632 extern int replace_label (rtx
*, void *);
2633 extern int rtx_referenced_p (rtx
, rtx
);
2634 extern bool tablejump_p (const_rtx
, rtx
*, rtx_jump_table_data
**);
2635 extern int computed_jump_p (const_rtx
);
2636 extern bool tls_referenced_p (rtx
);
2638 typedef int (*rtx_function
) (rtx
*, void *);
2639 extern int for_each_rtx (rtx
*, rtx_function
, void *);
2640 extern int for_each_rtx_in_insn (rtx_insn
**, rtx_function
, void *);
2642 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2643 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2644 NULL. The callback is passed the same opaque ARG passed to
2645 for_each_inc_dec. Return zero to continue looking for other
2646 autoinc operations, -1 to skip OP's operands, and any other value
2647 to interrupt the traversal and return that value to the caller of
2648 for_each_inc_dec. */
2649 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
2650 rtx srcoff
, void *arg
);
2651 extern int for_each_inc_dec (rtx_insn
**, for_each_inc_dec_fn
, void *arg
);
2653 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
2655 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
2656 rtx_equal_p_callback_function
);
2658 typedef int (*hash_rtx_callback_function
) (const_rtx
, enum machine_mode
, rtx
*,
2659 enum machine_mode
*);
2660 extern unsigned hash_rtx_cb (const_rtx
, enum machine_mode
, int *, int *,
2661 bool, hash_rtx_callback_function
);
2663 extern rtx
regno_use_in (unsigned int, rtx
);
2664 extern int auto_inc_p (const_rtx
);
2665 extern int in_expr_list_p (const_rtx
, const_rtx
);
2666 extern void remove_node_from_expr_list (const_rtx
, rtx
*);
2667 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
2668 extern rtx_insn
*find_first_parameter_load (rtx
, rtx
);
2669 extern bool keep_with_call_p (const_rtx
);
2670 extern bool label_is_jump_target_p (const_rtx
, const_rtx
);
2671 extern int insn_rtx_cost (rtx
, bool);
2673 /* Given an insn and condition, return a canonical description of
2674 the test being made. */
2675 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
2678 /* Given a JUMP_INSN, return a canonical description of the test
2680 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
2682 /* Information about a subreg of a hard register. */
2685 /* Offset of first hard register involved in the subreg. */
2687 /* Number of hard registers involved in the subreg. */
2689 /* Whether this subreg can be represented as a hard reg with the new
2691 bool representable_p
;
2694 extern void subreg_get_info (unsigned int, enum machine_mode
,
2695 unsigned int, enum machine_mode
,
2696 struct subreg_info
*);
2700 extern void free_EXPR_LIST_list (rtx
*);
2701 extern void free_INSN_LIST_list (rtx
*);
2702 extern void free_EXPR_LIST_node (rtx
);
2703 extern void free_INSN_LIST_node (rtx
);
2704 extern rtx
alloc_INSN_LIST (rtx
, rtx
);
2705 extern rtx
copy_INSN_LIST (rtx
);
2706 extern rtx
concat_INSN_LIST (rtx
, rtx
);
2707 extern rtx
alloc_EXPR_LIST (int, rtx
, rtx
);
2708 extern void remove_free_INSN_LIST_elem (rtx
, rtx
*);
2709 extern rtx
remove_list_elem (rtx
, rtx
*);
2710 extern rtx
remove_free_INSN_LIST_node (rtx
*);
2711 extern rtx
remove_free_EXPR_LIST_node (rtx
*);
2716 /* Resize reg info. */
2717 extern bool resize_reg_info (void);
2718 /* Free up register info memory. */
2719 extern void free_reg_info (void);
2720 extern void init_subregs_of_mode (void);
2721 extern void finish_subregs_of_mode (void);
2724 extern rtx
extract_asm_operands (rtx
);
2725 extern int asm_noperands (const_rtx
);
2726 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
2727 enum machine_mode
*, location_t
*);
2728 extern void get_referenced_operands (const char *, bool *, unsigned int);
2730 extern enum reg_class
reg_preferred_class (int);
2731 extern enum reg_class
reg_alternate_class (int);
2732 extern enum reg_class
reg_allocno_class (int);
2733 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
2736 extern void split_all_insns (void);
2737 extern unsigned int split_all_insns_noflow (void);
2739 #define MAX_SAVED_CONST_INT 64
2740 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
2742 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
2743 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
2744 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
2745 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
2746 extern GTY(()) rtx const_true_rtx
;
2748 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
2750 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
2751 same as VOIDmode. */
2753 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
2755 /* Likewise, for the constants 1 and 2 and -1. */
2757 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
2758 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
2759 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
2761 extern GTY(()) rtx pc_rtx
;
2762 extern GTY(()) rtx cc0_rtx
;
2763 extern GTY(()) rtx ret_rtx
;
2764 extern GTY(()) rtx simple_return_rtx
;
2766 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
2767 is used to represent the frame pointer. This is because the
2768 hard frame pointer and the automatic variables are separated by an amount
2769 that cannot be determined until after register allocation. We can assume
2770 that in this case ELIMINABLE_REGS will be defined, one action of which
2771 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
2772 #ifndef HARD_FRAME_POINTER_REGNUM
2773 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
2776 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
2777 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
2778 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
2781 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
2782 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
2783 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
2786 /* Index labels for global_rtl. */
2787 enum global_rtl_index
2791 /* For register elimination to work properly these hard_frame_pointer_rtx,
2792 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
2793 the same register. */
2794 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
2795 GR_ARG_POINTER
= GR_FRAME_POINTER
,
2797 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
2798 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
2800 GR_HARD_FRAME_POINTER
,
2802 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
2803 #if HARD_FRAME_POINTER_IS_ARG_POINTER
2804 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
2809 GR_VIRTUAL_INCOMING_ARGS
,
2810 GR_VIRTUAL_STACK_ARGS
,
2811 GR_VIRTUAL_STACK_DYNAMIC
,
2812 GR_VIRTUAL_OUTGOING_ARGS
,
2814 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
2819 /* Target-dependent globals. */
2820 struct GTY(()) target_rtl
{
2821 /* All references to the hard registers in global_rtl_index go through
2822 these unique rtl objects. On machines where the frame-pointer and
2823 arg-pointer are the same register, they use the same unique object.
2825 After register allocation, other rtl objects which used to be pseudo-regs
2826 may be clobbered to refer to the frame-pointer register.
2827 But references that were originally to the frame-pointer can be
2828 distinguished from the others because they contain frame_pointer_rtx.
2830 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
2831 tricky: until register elimination has taken place hard_frame_pointer_rtx
2832 should be used if it is being set, and frame_pointer_rtx otherwise. After
2833 register elimination hard_frame_pointer_rtx should always be used.
2834 On machines where the two registers are same (most) then these are the
2836 rtx x_global_rtl
[GR_MAX
];
2838 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
2839 rtx x_pic_offset_table_rtx
;
2841 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
2842 This is used to implement __builtin_return_address for some machines;
2843 see for instance the MIPS port. */
2844 rtx x_return_address_pointer_rtx
;
2846 /* Commonly used RTL for hard registers. These objects are not
2847 necessarily unique, so we allocate them separately from global_rtl.
2848 They are initialized once per compilation unit, then copied into
2849 regno_reg_rtx at the beginning of each function. */
2850 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
2852 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
2853 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
2855 /* Static hunks of RTL used by the aliasing code; these are treated
2856 as persistent to avoid unnecessary RTL allocations. */
2857 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
2859 /* The default memory attributes for each mode. */
2860 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
2862 /* Track if RTL has been initialized. */
2863 bool target_specific_initialized
;
2866 extern GTY(()) struct target_rtl default_target_rtl
;
2867 #if SWITCHABLE_TARGET
2868 extern struct target_rtl
*this_target_rtl
;
2870 #define this_target_rtl (&default_target_rtl)
2873 #define global_rtl \
2874 (this_target_rtl->x_global_rtl)
2875 #define pic_offset_table_rtx \
2876 (this_target_rtl->x_pic_offset_table_rtx)
2877 #define return_address_pointer_rtx \
2878 (this_target_rtl->x_return_address_pointer_rtx)
2879 #define top_of_stack \
2880 (this_target_rtl->x_top_of_stack)
2881 #define mode_mem_attrs \
2882 (this_target_rtl->x_mode_mem_attrs)
2884 /* All references to certain hard regs, except those created
2885 by allocating pseudo regs into them (when that's possible),
2886 go through these unique rtx objects. */
2887 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
2888 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
2889 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
2890 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
2892 #ifndef GENERATOR_FILE
2893 /* Return the attributes of a MEM rtx. */
2894 static inline struct mem_attrs
*
2895 get_mem_attrs (const_rtx x
)
2897 struct mem_attrs
*attrs
;
2899 attrs
= MEM_ATTRS (x
);
2901 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
2906 /* Include the RTL generation functions. */
2908 #ifndef GENERATOR_FILE
2910 #undef gen_rtx_ASM_INPUT
2911 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
2912 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
2913 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
2914 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
2917 /* There are some RTL codes that require special attention; the
2918 generation functions included above do the raw handling. If you
2919 add to this list, modify special_rtx in gengenrtl.c as well. */
2921 extern rtx
gen_rtx_CONST_INT (enum machine_mode
, HOST_WIDE_INT
);
2922 extern rtx
gen_rtx_CONST_VECTOR (enum machine_mode
, rtvec
);
2923 extern rtx
gen_raw_REG (enum machine_mode
, int);
2924 extern rtx
gen_rtx_REG (enum machine_mode
, unsigned);
2925 extern rtx
gen_rtx_SUBREG (enum machine_mode
, rtx
, int);
2926 extern rtx
gen_rtx_MEM (enum machine_mode
, rtx
);
2927 extern rtx
gen_rtx_VAR_LOCATION (enum machine_mode
, tree
, rtx
,
2928 enum var_init_status
);
2930 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
2932 /* Virtual registers are used during RTL generation to refer to locations into
2933 the stack frame when the actual location isn't known until RTL generation
2934 is complete. The routine instantiate_virtual_regs replaces these with
2935 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
2938 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
2940 /* This points to the first word of the incoming arguments passed on the stack,
2941 either by the caller or by the callee when pretending it was passed by the
2944 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
2946 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
2948 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
2949 variable on the stack. Otherwise, it points to the first variable on
2952 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
2954 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
2956 /* This points to the location of dynamically-allocated memory on the stack
2957 immediately after the stack pointer has been adjusted by the amount
2960 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
2962 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
2964 /* This points to the location in the stack at which outgoing arguments should
2965 be written when the stack is pre-pushed (arguments pushed using push
2966 insns always use sp). */
2968 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
2970 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
2972 /* This points to the Canonical Frame Address of the function. This
2973 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
2974 but is calculated relative to the arg pointer for simplicity; the
2975 frame pointer nor stack pointer are necessarily fixed relative to
2976 the CFA until after reload. */
2978 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
2980 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
2982 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
2984 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
2987 #define virtual_preferred_stack_boundary_rtx \
2988 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
2990 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
2991 ((FIRST_VIRTUAL_REGISTER) + 5)
2993 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
2995 /* Nonzero if REGNUM is a pointer into the stack frame. */
2996 #define REGNO_PTR_FRAME_P(REGNUM) \
2997 ((REGNUM) == STACK_POINTER_REGNUM \
2998 || (REGNUM) == FRAME_POINTER_REGNUM \
2999 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3000 || (REGNUM) == ARG_POINTER_REGNUM \
3001 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3002 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3004 /* REGNUM never really appearing in the INSN stream. */
3005 #define INVALID_REGNUM (~(unsigned int) 0)
3007 /* REGNUM for which no debug information can be generated. */
3008 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3010 extern rtx
output_constant_def (tree
, int);
3011 extern rtx
lookup_constant_def (tree
);
3013 /* Nonzero after end of reload pass.
3014 Set to 1 or 0 by reload1.c. */
3016 extern int reload_completed
;
3018 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3019 extern int epilogue_completed
;
3021 /* Set to 1 while reload_as_needed is operating.
3022 Required by some machines to handle any generated moves differently. */
3024 extern int reload_in_progress
;
3026 /* Set to 1 while in lra. */
3027 extern int lra_in_progress
;
3029 /* This macro indicates whether you may create a new
3032 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3035 /* Nonzero after end of regstack pass.
3036 Set to 1 or 0 by reg-stack.c. */
3037 extern int regstack_completed
;
3040 /* If this is nonzero, we do not bother generating VOLATILE
3041 around volatile memory references, and we are willing to
3042 output indirect addresses. If cse is to follow, we reject
3043 indirect addresses so a useful potential cse is generated;
3044 if it is used only once, instruction combination will produce
3045 the same indirect address eventually. */
3046 extern int cse_not_expected
;
3048 /* Translates rtx code to tree code, for those codes needed by
3049 REAL_ARITHMETIC. The function returns an int because the caller may not
3050 know what `enum tree_code' means. */
3052 extern int rtx_to_tree_code (enum rtx_code
);
3055 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3056 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3057 extern unsigned hash_rtx (const_rtx x
, enum machine_mode
, int *, int *, bool);
3060 extern bool check_for_inc_dec (rtx_insn
*insn
);
3063 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3064 extern bool jump_to_label_p (rtx
);
3065 extern int condjump_p (const_rtx
);
3066 extern int any_condjump_p (const_rtx
);
3067 extern int any_uncondjump_p (const_rtx
);
3068 extern rtx
pc_set (const_rtx
);
3069 extern rtx
condjump_label (const_rtx
);
3070 extern int simplejump_p (const_rtx
);
3071 extern int returnjump_p (rtx
);
3072 extern int eh_returnjump_p (rtx
);
3073 extern int onlyjump_p (const_rtx
);
3074 extern int only_sets_cc0_p (const_rtx
);
3075 extern int sets_cc0_p (const_rtx
);
3076 extern int invert_jump_1 (rtx
, rtx
);
3077 extern int invert_jump (rtx
, rtx
, int);
3078 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3079 extern int true_regnum (const_rtx
);
3080 extern unsigned int reg_or_subregno (const_rtx
);
3081 extern int redirect_jump_1 (rtx
, rtx
);
3082 extern void redirect_jump_2 (rtx
, rtx
, rtx
, int, int);
3083 extern int redirect_jump (rtx
, rtx
, int);
3084 extern void rebuild_jump_labels (rtx_insn
*);
3085 extern void rebuild_jump_labels_chain (rtx_insn
*);
3086 extern rtx
reversed_comparison (const_rtx
, enum machine_mode
);
3087 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
3088 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3089 const_rtx
, const_rtx
);
3090 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3091 extern int condjump_in_parallel_p (const_rtx
);
3093 /* In emit-rtl.c. */
3094 extern int max_reg_num (void);
3095 extern int max_label_num (void);
3096 extern int get_first_label_num (void);
3097 extern void maybe_set_first_label_num (rtx
);
3098 extern void delete_insns_since (rtx_insn
*);
3099 extern void mark_reg_pointer (rtx
, int);
3100 extern void mark_user_reg (rtx
);
3101 extern void reset_used_flags (rtx
);
3102 extern void set_used_flags (rtx
);
3103 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3104 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3105 extern int get_max_insn_count (void);
3106 extern int in_sequence_p (void);
3107 extern void init_emit (void);
3108 extern void init_emit_regs (void);
3109 extern void init_derived_machine_modes (void);
3110 extern void init_emit_once (void);
3111 extern void push_topmost_sequence (void);
3112 extern void pop_topmost_sequence (void);
3113 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3114 extern unsigned int unshare_all_rtl (void);
3115 extern void unshare_all_rtl_again (rtx_insn
*);
3116 extern void unshare_all_rtl_in_chain (rtx
);
3117 extern void verify_rtl_sharing (void);
3118 extern void add_insn (rtx_insn
*);
3119 extern void add_insn_before (rtx
, rtx
, basic_block
);
3120 extern void add_insn_after (rtx
, rtx
, basic_block
);
3121 extern void remove_insn (rtx
);
3122 extern rtx_insn
*emit (rtx
);
3123 extern void delete_insn (rtx
);
3124 extern rtx_insn
*entry_of_function (void);
3125 extern void emit_insn_at_entry (rtx
);
3126 extern void delete_insn_chain (rtx
, rtx
, bool);
3127 extern rtx_insn
*unlink_insn_chain (rtx_insn
*, rtx_insn
*);
3128 extern void delete_insn_and_edges (rtx_insn
*);
3129 extern rtx
gen_lowpart_SUBREG (enum machine_mode
, rtx
);
3130 extern rtx
gen_const_mem (enum machine_mode
, rtx
);
3131 extern rtx
gen_frame_mem (enum machine_mode
, rtx
);
3132 extern rtx
gen_tmp_stack_mem (enum machine_mode
, rtx
);
3133 extern bool validate_subreg (enum machine_mode
, enum machine_mode
,
3134 const_rtx
, unsigned int);
3137 extern unsigned int extended_count (const_rtx
, enum machine_mode
, int);
3138 extern rtx
remove_death (unsigned int, rtx
);
3139 extern void dump_combine_stats (FILE *);
3140 extern void dump_combine_total_stats (FILE *);
3141 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3143 /* In cfgcleanup.c */
3144 extern void delete_dead_jumptables (void);
3146 /* In sched-rgn.c. */
3147 extern void schedule_insns (void);
3149 /* In sched-ebb.c. */
3150 extern void schedule_ebbs (void);
3152 /* In sel-sched-dump.c. */
3153 extern void sel_sched_fix_param (const char *param
, const char *val
);
3155 /* In print-rtl.c */
3156 extern const char *print_rtx_head
;
3157 extern void debug (const rtx_def
&ref
);
3158 extern void debug (const rtx_def
*ptr
);
3159 extern void debug_rtx (const_rtx
);
3160 extern void debug_rtx_list (const rtx_insn
*, int);
3161 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3162 extern const_rtx
debug_rtx_find (const rtx_insn
*, int);
3163 extern void print_mem_expr (FILE *, const_tree
);
3164 extern void print_rtl (FILE *, const_rtx
);
3165 extern void print_simple_rtl (FILE *, const_rtx
);
3166 extern int print_rtl_single (FILE *, const_rtx
);
3167 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3168 extern void print_inline_rtx (FILE *, const_rtx
, int);
3170 /* Functions in sched-vis.c. FIXME: Ideally these functions would
3171 not be in sched-vis.c but in rtl.c, because they are not only used
3172 by the scheduler anymore but for all "slim" RTL dumping. */
3173 extern void dump_value_slim (FILE *, const_rtx
, int);
3174 extern void dump_insn_slim (FILE *, const_rtx
);
3175 extern void dump_rtl_slim (FILE *, const_rtx
, const_rtx
, int, int);
3176 extern void print_value (pretty_printer
*, const_rtx
, int);
3177 extern void print_pattern (pretty_printer
*, const_rtx
, int);
3178 extern void print_insn (pretty_printer
*, const_rtx
, int);
3179 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
3180 extern const char *str_pattern_slim (const_rtx
);
3183 extern void reposition_prologue_and_epilogue_notes (void);
3184 extern int prologue_epilogue_contains (const_rtx
);
3185 extern int sibcall_epilogue_contains (const_rtx
);
3186 extern void update_temp_slot_address (rtx
, rtx
);
3187 extern void maybe_copy_prologue_epilogue_insn (rtx
, rtx
);
3188 extern void set_return_jump_label (rtx
);
3191 extern void expand_null_return (void);
3192 extern void expand_naked_return (void);
3193 extern void emit_jump (rtx
);
3196 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3198 extern HOST_WIDE_INT
find_args_size_adjust (rtx
);
3199 extern int fixup_args_size_notes (rtx
, rtx
, int);
3202 extern void print_rtl_with_bb (FILE *, const_rtx
, int);
3203 extern rtx_insn
*duplicate_insn_chain (rtx_insn
*, rtx_insn
*);
3206 extern void init_expmed (void);
3207 extern void expand_inc (rtx
, rtx
);
3208 extern void expand_dec (rtx
, rtx
);
3210 /* In lower-subreg.c */
3211 extern void init_lower_subreg (void);
3214 extern bool can_copy_p (enum machine_mode
);
3215 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
3216 extern rtx
fis_get_condition (rtx_insn
*);
3220 extern HARD_REG_SET eliminable_regset
;
3222 extern void mark_elimination (int, int);
3225 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3226 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3227 extern void globalize_reg (tree
, int);
3228 extern void init_reg_modes_target (void);
3229 extern void init_regs (void);
3230 extern void reinit_regs (void);
3231 extern void init_fake_stack_mems (void);
3232 extern void save_register_info (void);
3233 extern void init_reg_sets (void);
3234 extern void regclass (rtx
, int);
3235 extern void reg_scan (rtx_insn
*, unsigned int);
3236 extern void fix_register (const char *, int, int);
3237 extern bool invalid_mode_change_p (unsigned int, enum reg_class
);
3240 extern int function_invariant_p (const_rtx
);
3250 LCT_RETURNS_TWICE
= 5
3253 extern void emit_library_call (rtx
, enum libcall_type
, enum machine_mode
, int,
3255 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
3256 enum machine_mode
, int, ...);
3259 extern void init_varasm_once (void);
3261 extern rtx
make_debug_expr_from_rtl (const_rtx
);
3264 extern bool read_rtx (const char *, rtx
*);
3267 extern rtx
canon_rtx (rtx
);
3268 extern int true_dependence (const_rtx
, enum machine_mode
, const_rtx
);
3269 extern rtx
get_addr (rtx
);
3270 extern int canon_true_dependence (const_rtx
, enum machine_mode
, rtx
,
3272 extern int read_dependence (const_rtx
, const_rtx
);
3273 extern int anti_dependence (const_rtx
, const_rtx
);
3274 extern int canon_anti_dependence (const_rtx
, bool,
3275 const_rtx
, enum machine_mode
, rtx
);
3276 extern int output_dependence (const_rtx
, const_rtx
);
3277 extern int may_alias_p (const_rtx
, const_rtx
);
3278 extern void init_alias_target (void);
3279 extern void init_alias_analysis (void);
3280 extern void end_alias_analysis (void);
3281 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
3282 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
3283 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
3284 extern bool may_be_sp_based_p (rtx
);
3285 extern rtx
gen_hard_reg_clobber (enum machine_mode
, unsigned int);
3286 extern rtx
get_reg_known_value (unsigned int);
3287 extern bool get_reg_known_equiv_p (unsigned int);
3288 extern rtx
get_reg_base_value (unsigned int);
3291 extern int stack_regs_mentioned (const_rtx insn
);
3295 extern GTY(()) rtx stack_limit_rtx
;
3298 extern void invert_br_probabilities (rtx
);
3299 extern bool expensive_function_p (int);
3301 /* In var-tracking.c */
3302 extern unsigned int variable_tracking_main (void);
3304 /* In stor-layout.c. */
3305 extern void get_mode_bounds (enum machine_mode
, int, enum machine_mode
,
3309 extern rtx
canon_condition (rtx
);
3310 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
3313 extern unsigned int compute_alignments (void);
3314 extern void update_alignments (vec
<rtx
> &);
3315 extern int asm_str_count (const char *templ
);
3319 rtx (*gen_lowpart
) (enum machine_mode
, rtx
);
3320 rtx (*gen_lowpart_no_emit
) (enum machine_mode
, rtx
);
3321 rtx (*reg_nonzero_bits
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
3322 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
3323 rtx (*reg_num_sign_bit_copies
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
3324 unsigned int, unsigned int *);
3325 bool (*reg_truncated_to_mode
) (enum machine_mode
, const_rtx
);
3327 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3330 /* Each pass can provide its own. */
3331 extern struct rtl_hooks rtl_hooks
;
3333 /* ... but then it has to restore these. */
3334 extern const struct rtl_hooks general_rtl_hooks
;
3336 /* Keep this for the nonce. */
3337 #define gen_lowpart rtl_hooks.gen_lowpart
3339 extern void insn_locations_init (void);
3340 extern void insn_locations_finalize (void);
3341 extern void set_curr_insn_location (location_t
);
3342 extern location_t
curr_insn_location (void);
3343 extern bool optimize_insn_for_size_p (void);
3344 extern bool optimize_insn_for_speed_p (void);
3347 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
3349 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
3352 #define fatal_insn(msgid, insn) \
3353 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3354 #define fatal_insn_not_found(insn) \
3355 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3358 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
3361 #endif /* ! GCC_RTL_H */