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_list
: public rtx_def
407 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
409 This is an instance of:
411 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
413 i.e. a node for constructing singly-linked lists of rtx_insn *, where
414 the list is "external" to the insn (as opposed to the doubly-linked
415 list embedded within rtx_insn itself). */
418 /* Get next in list. */
419 rtx_insn_list
*next () const;
421 /* Get at the underlying instruction. */
422 rtx_insn
*insn () const;
429 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
431 return rt
->code
== INSN_LIST
;
434 class GTY(()) rtx_insn
: public rtx_def
436 /* No extra fields, but adds the invariant:
440 || JUMP_TABLE_DATA_P (X)
444 i.e. that we must be able to use the following:
448 i.e. we have an rtx that has an INSN_UID field and can be part of
449 a linked list of insns.
453 /* Subclasses of rtx_insn. */
455 class GTY(()) rtx_debug_insn
: public rtx_insn
457 /* No extra fields, but adds the invariant:
458 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
459 i.e. an annotation for tracking variable assignments.
461 This is an instance of:
462 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
466 class GTY(()) rtx_nonjump_insn
: public rtx_insn
468 /* No extra fields, but adds the invariant:
469 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
470 i.e an instruction that cannot jump.
472 This is an instance of:
473 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
477 class GTY(()) rtx_jump_insn
: public rtx_insn
479 /* No extra fields, but adds the invariant:
480 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
481 i.e. an instruction that can possibly jump.
483 This is an instance of:
484 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
488 class GTY(()) rtx_call_insn
: public rtx_insn
490 /* No extra fields, but adds the invariant:
491 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
492 i.e. an instruction that can possibly call a subroutine
493 but which will not change which instruction comes next
494 in the current function.
496 This is an instance of:
497 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
501 class GTY(()) rtx_jump_table_data
: public rtx_insn
503 /* No extra fields, but adds the invariant:
504 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
505 i.e. a data for a jump table, considered an instruction for
508 This is an instance of:
509 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
514 /* This can be either:
516 (a) a table of absolute jumps, in which case PATTERN (this) is an
517 ADDR_VEC with arg 0 a vector of labels, or
519 (b) a table of relative jumps (e.g. for -fPIC), in which case
520 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
521 arg 1 the vector of labels.
523 This method gets the underlying vec. */
525 inline rtvec
get_labels () const;
528 class GTY(()) rtx_barrier
: public rtx_insn
530 /* No extra fields, but adds the invariant:
531 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
532 i.e. a marker that indicates that control will not flow through.
534 This is an instance of:
535 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
539 class GTY(()) rtx_code_label
: public rtx_insn
541 /* No extra fields, but adds the invariant:
542 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
543 i.e. a label in the assembler.
545 This is an instance of:
546 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
550 class GTY(()) rtx_note
: public rtx_insn
552 /* No extra fields, but adds the invariant:
553 NOTE_P(X) aka (GET_CODE (X) == NOTE)
554 i.e. a note about the corresponding source code.
556 This is an instance of:
557 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
561 /* The size in bytes of an rtx header (code, mode and flags). */
562 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
564 /* The size in bytes of an rtx with code CODE. */
565 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
567 #define NULL_RTX (rtx) 0
569 /* The "next" and "previous" RTX, relative to this one. */
571 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
572 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
574 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
576 #define RTX_PREV(X) ((INSN_P (X) \
578 || JUMP_TABLE_DATA_P (X) \
581 && PREV_INSN (X) != NULL \
582 && NEXT_INSN (PREV_INSN (X)) == X \
583 ? PREV_INSN (X) : NULL)
585 /* Define macros to access the `code' field of the rtx. */
587 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
588 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
590 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
591 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
593 /* RTL vector. These appear inside RTX's when there is a need
594 for a variable number of things. The principle use is inside
595 PARALLEL expressions. */
597 struct GTY(()) rtvec_def
{
598 int num_elem
; /* number of elements */
599 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
602 #define NULL_RTVEC (rtvec) 0
604 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
605 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
607 /* Predicate yielding nonzero iff X is an rtx for a register. */
608 #define REG_P(X) (GET_CODE (X) == REG)
610 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
611 #define MEM_P(X) (GET_CODE (X) == MEM)
613 #if TARGET_SUPPORTS_WIDE_INT
615 /* Match CONST_*s that can represent compile-time constant integers. */
616 #define CASE_CONST_SCALAR_INT \
620 /* Match CONST_*s for which pointer equality corresponds to value
622 #define CASE_CONST_UNIQUE \
624 case CONST_WIDE_INT: \
628 /* Match all CONST_* rtxes. */
629 #define CASE_CONST_ANY \
631 case CONST_WIDE_INT: \
638 /* Match CONST_*s that can represent compile-time constant integers. */
639 #define CASE_CONST_SCALAR_INT \
643 /* Match CONST_*s for which pointer equality corresponds to value
645 #define CASE_CONST_UNIQUE \
650 /* Match all CONST_* rtxes. */
651 #define CASE_CONST_ANY \
658 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
659 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
661 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
662 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
664 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
665 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
667 /* Predicate yielding true iff X is an rtx for a double-int
668 or floating point constant. */
669 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
671 /* Predicate yielding true iff X is an rtx for a double-int. */
672 #define CONST_DOUBLE_AS_INT_P(X) \
673 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
675 /* Predicate yielding true iff X is an rtx for a integer const. */
676 #if TARGET_SUPPORTS_WIDE_INT
677 #define CONST_SCALAR_INT_P(X) \
678 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
680 #define CONST_SCALAR_INT_P(X) \
681 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
684 /* Predicate yielding true iff X is an rtx for a double-int. */
685 #define CONST_DOUBLE_AS_FLOAT_P(X) \
686 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
688 /* Predicate yielding nonzero iff X is a label insn. */
689 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
691 /* Predicate yielding nonzero iff X is a jump insn. */
692 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
694 /* Predicate yielding nonzero iff X is a call insn. */
695 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
697 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
698 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
700 /* Predicate yielding nonzero iff X is a debug note/insn. */
701 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
703 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
704 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
706 /* Nonzero if DEBUG_INSN_P may possibly hold. */
707 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
709 /* Predicate yielding nonzero iff X is a real insn. */
711 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
713 /* Predicate yielding nonzero iff X is a note insn. */
714 #define NOTE_P(X) (GET_CODE (X) == NOTE)
716 /* Predicate yielding nonzero iff X is a barrier insn. */
717 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
719 /* Predicate yielding nonzero iff X is a data for a jump table. */
720 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
725 is_a_helper
<rtx_insn
*>::test (rtx rt
)
729 || JUMP_TABLE_DATA_P (rt
)
737 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
741 || JUMP_TABLE_DATA_P (rt
)
749 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
751 return DEBUG_INSN_P (rt
);
757 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
759 return NONJUMP_INSN_P (rt
);
765 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
773 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
781 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
783 return CALL_P (insn
);
789 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
791 return JUMP_TABLE_DATA_P (rt
);
797 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
799 return JUMP_TABLE_DATA_P (insn
);
805 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
807 return BARRIER_P (rt
);
813 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
821 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
823 return LABEL_P (insn
);
829 is_a_helper
<rtx_note
*>::test (rtx rt
)
837 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
839 return NOTE_P (insn
);
842 /* Predicate yielding nonzero iff X is a return or simple_return. */
843 #define ANY_RETURN_P(X) \
844 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
846 /* 1 if X is a unary operator. */
849 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
851 /* 1 if X is a binary operator. */
853 #define BINARY_P(X) \
854 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
856 /* 1 if X is an arithmetic operator. */
858 #define ARITHMETIC_P(X) \
859 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
860 == RTX_ARITHMETIC_RESULT)
862 /* 1 if X is an arithmetic operator. */
864 #define COMMUTATIVE_ARITH_P(X) \
865 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
867 /* 1 if X is a commutative arithmetic operator or a comparison operator.
868 These two are sometimes selected together because it is possible to
869 swap the two operands. */
871 #define SWAPPABLE_OPERANDS_P(X) \
872 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
873 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
874 | (1 << RTX_COMPARE)))
876 /* 1 if X is a non-commutative operator. */
878 #define NON_COMMUTATIVE_P(X) \
879 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
880 == RTX_NON_COMMUTATIVE_RESULT)
882 /* 1 if X is a commutative operator on integers. */
884 #define COMMUTATIVE_P(X) \
885 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
886 == RTX_COMMUTATIVE_RESULT)
888 /* 1 if X is a relational operator. */
890 #define COMPARISON_P(X) \
891 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
893 /* 1 if X is a constant value that is an integer. */
895 #define CONSTANT_P(X) \
896 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
898 /* 1 if X can be used to represent an object. */
899 #define OBJECT_P(X) \
900 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
902 /* General accessor macros for accessing the fields of an rtx. */
904 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
905 /* The bit with a star outside the statement expr and an & inside is
906 so that N can be evaluated only once. */
907 #define RTL_CHECK1(RTX, N, C1) __extension__ \
908 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
909 const enum rtx_code _code = GET_CODE (_rtx); \
910 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
911 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
913 if (GET_RTX_FORMAT (_code)[_n] != C1) \
914 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
916 &_rtx->u.fld[_n]; }))
918 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
919 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
920 const enum rtx_code _code = GET_CODE (_rtx); \
921 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
922 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
924 if (GET_RTX_FORMAT (_code)[_n] != C1 \
925 && GET_RTX_FORMAT (_code)[_n] != C2) \
926 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
928 &_rtx->u.fld[_n]; }))
930 #define RTL_CHECKC1(RTX, N, C) __extension__ \
931 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
932 if (GET_CODE (_rtx) != (C)) \
933 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
935 &_rtx->u.fld[_n]; }))
937 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
938 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
939 const enum rtx_code _code = GET_CODE (_rtx); \
940 if (_code != (C1) && _code != (C2)) \
941 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
943 &_rtx->u.fld[_n]; }))
945 #define RTVEC_ELT(RTVEC, I) __extension__ \
946 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
947 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
948 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
950 &_rtvec->elem[_i]; }))
952 #define XWINT(RTX, N) __extension__ \
953 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
954 const enum rtx_code _code = GET_CODE (_rtx); \
955 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
956 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
958 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
959 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
961 &_rtx->u.hwint[_n]; }))
963 #define CWI_ELT(RTX, I) __extension__ \
964 (*({ __typeof (RTX) const _cwi = (RTX); \
965 int _max = CWI_GET_NUM_ELEM (_cwi); \
966 const int _i = (I); \
967 if (_i < 0 || _i >= _max) \
968 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
970 &_cwi->u.hwiv.elem[_i]; }))
972 #define XCWINT(RTX, N, C) __extension__ \
973 (*({ __typeof (RTX) const _rtx = (RTX); \
974 if (GET_CODE (_rtx) != (C)) \
975 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
977 &_rtx->u.hwint[N]; }))
979 #define XCMWINT(RTX, N, C, M) __extension__ \
980 (*({ __typeof (RTX) const _rtx = (RTX); \
981 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
982 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
983 __LINE__, __FUNCTION__); \
984 &_rtx->u.hwint[N]; }))
986 #define XCNMPRV(RTX, C, M) __extension__ \
987 ({ __typeof (RTX) const _rtx = (RTX); \
988 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
989 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
990 __LINE__, __FUNCTION__); \
993 #define XCNMPFV(RTX, C, M) __extension__ \
994 ({ __typeof (RTX) const _rtx = (RTX); \
995 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
996 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
997 __LINE__, __FUNCTION__); \
1000 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1001 ({ __typeof (RTX) const _symbol = (RTX); \
1002 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1003 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1004 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1006 &_symbol->u.block_sym; })
1008 #define HWIVEC_CHECK(RTX,C) __extension__ \
1009 ({ __typeof (RTX) const _symbol = (RTX); \
1010 RTL_CHECKC1 (_symbol, 0, C); \
1011 &_symbol->u.hwiv; })
1013 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1016 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1019 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1022 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1025 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1026 const char *, int, const char *)
1028 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, enum machine_mode
,
1029 bool, const char *, int, const char *)
1031 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1033 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1036 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1040 #else /* not ENABLE_RTL_CHECKING */
1042 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1043 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1044 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1045 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1046 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1047 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1048 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1049 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1050 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1051 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1052 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1053 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1054 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1055 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1059 /* General accessor macros for accessing the flags of an rtx. */
1061 /* Access an individual rtx flag, with no checking of any kind. */
1062 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1064 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1065 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1066 ({ __typeof (RTX) const _rtx = (RTX); \
1067 if (GET_CODE (_rtx) != C1) \
1068 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1072 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1073 ({ __typeof (RTX) const _rtx = (RTX); \
1074 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1075 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1079 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1080 ({ __typeof (RTX) const _rtx = (RTX); \
1081 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1082 && GET_CODE (_rtx) != C3) \
1083 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1087 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1088 ({ __typeof (RTX) const _rtx = (RTX); \
1089 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1090 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1091 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1095 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1096 ({ __typeof (RTX) const _rtx = (RTX); \
1097 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1098 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1099 && GET_CODE (_rtx) != C5) \
1100 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1104 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1106 ({ __typeof (RTX) const _rtx = (RTX); \
1107 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1108 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1109 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1110 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1114 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1116 ({ __typeof (RTX) const _rtx = (RTX); \
1117 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1118 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1119 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1120 && GET_CODE (_rtx) != C7) \
1121 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1125 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1127 ({ __typeof (RTX) const _rtx = (RTX); \
1128 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1129 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1133 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1138 #else /* not ENABLE_RTL_FLAG_CHECKING */
1140 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1141 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1142 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1143 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1144 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1145 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1146 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1147 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1150 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1151 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1152 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1153 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1154 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1155 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1156 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1157 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1158 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1159 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1161 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1162 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1164 /* These are like XINT, etc. except that they expect a '0' field instead
1165 of the normal type code. */
1167 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1168 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1169 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1170 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1171 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1172 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1173 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1174 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1175 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1176 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1177 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1178 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
1179 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1181 /* Access a '0' field with any type. */
1182 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1184 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1185 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1186 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1187 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1188 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1189 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1190 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1191 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1192 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1193 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1195 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1196 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1198 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1201 /* Methods of rtx_insn_list. */
1203 inline rtx_insn_list
*rtx_insn_list::next () const
1205 rtx tmp
= XEXP (this, 1);
1206 return safe_as_a
<rtx_insn_list
*> (tmp
);
1209 inline rtx_insn
*rtx_insn_list::insn () const
1211 rtx tmp
= XEXP (this, 0);
1212 return safe_as_a
<rtx_insn
*> (tmp
);
1215 /* ACCESS MACROS for particular fields of insns. */
1217 /* Holds a unique number for each insn.
1218 These are not necessarily sequentially increasing. */
1219 inline int INSN_UID (const_rtx insn
)
1221 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1222 (insn
))->u2
.insn_uid
;
1224 inline int& INSN_UID (rtx insn
)
1226 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1227 (insn
))->u2
.insn_uid
;
1230 /* Chain insns together in sequence. */
1232 /* For now these are split in two: an rvalue form:
1235 SET_NEXT_INSN/SET_PREV_INSN. */
1237 inline rtx_insn
*PREV_INSN (const_rtx insn
)
1239 rtx prev
= XEXP (insn
, 0);
1240 return safe_as_a
<rtx_insn
*> (prev
);
1243 inline rtx
& SET_PREV_INSN (rtx insn
)
1245 return XEXP (insn
, 0);
1248 inline rtx_insn
*NEXT_INSN (const_rtx insn
)
1250 rtx next
= XEXP (insn
, 1);
1251 return safe_as_a
<rtx_insn
*> (next
);
1254 inline rtx
& SET_NEXT_INSN (rtx insn
)
1256 return XEXP (insn
, 1);
1259 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1261 return XBBDEF (insn
, 2);
1264 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1266 return XBBDEF (insn
, 2);
1269 /* The body of an insn. */
1270 inline rtx
PATTERN (const_rtx insn
)
1272 return XEXP (insn
, 3);
1275 inline rtx
& PATTERN (rtx insn
)
1277 return XEXP (insn
, 3);
1280 inline unsigned int INSN_LOCATION (const_rtx insn
)
1282 return XUINT (insn
, 4);
1285 inline unsigned int& INSN_LOCATION (rtx insn
)
1287 return XUINT (insn
, 4);
1290 inline bool INSN_HAS_LOCATION (const_rtx insn
)
1292 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1295 /* LOCATION of an RTX if relevant. */
1296 #define RTL_LOCATION(X) (INSN_P (X) ? \
1297 INSN_LOCATION (X) : UNKNOWN_LOCATION)
1299 /* Code number of instruction, from when it was recognized.
1300 -1 means this instruction has not been recognized yet. */
1301 #define INSN_CODE(INSN) XINT (INSN, 5)
1303 inline rtvec
rtx_jump_table_data::get_labels () const
1305 rtx pat
= PATTERN (this);
1306 if (GET_CODE (pat
) == ADDR_VEC
)
1307 return XVEC (pat
, 0);
1309 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1312 #define RTX_FRAME_RELATED_P(RTX) \
1313 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1314 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1316 /* 1 if RTX is an insn that has been deleted. */
1317 #define INSN_DELETED_P(RTX) \
1318 (RTL_INSN_CHAIN_FLAG_CHECK ("INSN_DELETED_P", (RTX))->volatil)
1320 /* 1 if JUMP RTX is a crossing jump. */
1321 #define CROSSING_JUMP_P(RTX) \
1322 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1324 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1326 #define RTL_CONST_CALL_P(RTX) \
1327 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1329 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1331 #define RTL_PURE_CALL_P(RTX) \
1332 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1334 /* 1 if RTX is a call to a const or pure function. */
1335 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1336 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1338 /* 1 if RTX is a call to a looping const or pure function. Built from
1339 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1340 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1341 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1343 /* 1 if RTX is a call_insn for a sibling call. */
1344 #define SIBLING_CALL_P(RTX) \
1345 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1347 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1348 #define INSN_ANNULLED_BRANCH_P(RTX) \
1349 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1351 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1352 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1353 executed if the branch is taken. For annulled branches with this bit
1354 clear, the insn should be executed only if the branch is not taken. */
1355 #define INSN_FROM_TARGET_P(RTX) \
1356 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1357 CALL_INSN)->in_struct)
1359 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1360 See the comments for ADDR_DIFF_VEC in rtl.def. */
1361 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1363 /* In a VALUE, the value cselib has assigned to RTX.
1364 This is a "struct cselib_val", see cselib.h. */
1365 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1367 /* Holds a list of notes on what this insn does to various REGs.
1368 It is a chain of EXPR_LIST rtx's, where the second operand is the
1369 chain pointer and the first operand is the REG being described.
1370 The mode field of the EXPR_LIST contains not a real machine mode
1371 but a value from enum reg_note. */
1372 #define REG_NOTES(INSN) XEXP(INSN, 6)
1374 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1376 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1380 #define DEF_REG_NOTE(NAME) NAME,
1381 #include "reg-notes.def"
1386 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1387 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1388 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1389 PUT_MODE (LINK, (enum machine_mode) (KIND))
1391 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1393 extern const char * const reg_note_name
[];
1394 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1396 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1397 USE and CLOBBER expressions.
1398 USE expressions list the registers filled with arguments that
1399 are passed to the function.
1400 CLOBBER expressions document the registers explicitly clobbered
1402 Pseudo registers can not be mentioned in this list. */
1403 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1405 /* The label-number of a code-label. The assembler label
1406 is made from `L' and the label-number printed in decimal.
1407 Label numbers are unique in a compilation. */
1408 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1410 /* In a NOTE that is a line number, this is a string for the file name that the
1411 line is in. We use the same field to record block numbers temporarily in
1412 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1413 between ints and pointers if we use a different macro for the block number.)
1417 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1418 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1419 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1420 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1421 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1422 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1423 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1424 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1425 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1427 /* In a NOTE that is a line number, this is the line number.
1428 Other kinds of NOTEs are identified by negative numbers here. */
1429 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1431 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1432 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1433 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1435 /* Variable declaration and the location of a variable. */
1436 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1437 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1439 /* Initialization status of the variable in the location. Status
1440 can be unknown, uninitialized or initialized. See enumeration
1442 #define PAT_VAR_LOCATION_STATUS(PAT) \
1443 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1444 ->u2.var_location_status)
1446 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1447 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1448 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1449 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1450 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1451 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1452 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1454 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1455 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1457 /* Accessors for a tree-expanded var location debug insn. */
1458 #define INSN_VAR_LOCATION_DECL(INSN) \
1459 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1460 #define INSN_VAR_LOCATION_LOC(INSN) \
1461 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1462 #define INSN_VAR_LOCATION_STATUS(INSN) \
1463 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1465 /* Expand to the RTL that denotes an unknown variable location in a
1467 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1469 /* Determine whether X is such an unknown location. */
1470 #define VAR_LOC_UNKNOWN_P(X) \
1471 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1473 /* 1 if RTX is emitted after a call, but it should take effect before
1474 the call returns. */
1475 #define NOTE_DURING_CALL_P(RTX) \
1476 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1478 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1479 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1481 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1482 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1484 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1485 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1487 /* Codes that appear in the NOTE_KIND field for kinds of notes
1488 that are not line numbers. These codes are all negative.
1490 Notice that we do not try to use zero here for any of
1491 the special note codes because sometimes the source line
1492 actually can be zero! This happens (for example) when we
1493 are generating code for the per-translation-unit constructor
1494 and destructor routines for some C++ translation unit. */
1498 #define DEF_INSN_NOTE(NAME) NAME,
1499 #include "insn-notes.def"
1500 #undef DEF_INSN_NOTE
1505 /* Names for NOTE insn's other than line numbers. */
1507 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1508 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1509 (note_insn_name[(NOTE_CODE)])
1511 /* The name of a label, in case it corresponds to an explicit label
1512 in the input source code. */
1513 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1515 /* In jump.c, each label contains a count of the number
1516 of LABEL_REFs that point at it, so unused labels can be deleted. */
1517 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1519 /* Labels carry a two-bit field composed of the ->jump and ->call
1520 bits. This field indicates whether the label is an alternate
1521 entry point, and if so, what kind. */
1524 LABEL_NORMAL
= 0, /* ordinary label */
1525 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1526 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1527 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1530 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1532 /* Retrieve the kind of LABEL. */
1533 #define LABEL_KIND(LABEL) __extension__ \
1534 ({ __typeof (LABEL) const _label = (LABEL); \
1535 if (! LABEL_P (_label)) \
1536 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1538 (enum label_kind) ((_label->jump << 1) | _label->call); })
1540 /* Set the kind of LABEL. */
1541 #define SET_LABEL_KIND(LABEL, KIND) do { \
1542 __typeof (LABEL) const _label = (LABEL); \
1543 const unsigned int _kind = (KIND); \
1544 if (! LABEL_P (_label)) \
1545 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1547 _label->jump = ((_kind >> 1) & 1); \
1548 _label->call = (_kind & 1); \
1553 /* Retrieve the kind of LABEL. */
1554 #define LABEL_KIND(LABEL) \
1555 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1557 /* Set the kind of LABEL. */
1558 #define SET_LABEL_KIND(LABEL, KIND) do { \
1559 rtx const _label = (LABEL); \
1560 const unsigned int _kind = (KIND); \
1561 _label->jump = ((_kind >> 1) & 1); \
1562 _label->call = (_kind & 1); \
1565 #endif /* rtl flag checking */
1567 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1569 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1570 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1571 be decremented and possibly the label can be deleted. */
1572 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1574 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1575 goes through all the LABEL_REFs that jump to that label. The chain
1576 eventually winds up at the CODE_LABEL: it is circular. */
1577 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1579 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1580 be used on RHS. Use SET_REGNO to change the value. */
1581 #define REGNO(RTX) (rhs_regno(RTX))
1582 #define SET_REGNO(RTX,N) \
1583 (df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
1584 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
1586 /* ORIGINAL_REGNO holds the number the register originally had; for a
1587 pseudo register turned into a hard reg this will hold the old pseudo
1589 #define ORIGINAL_REGNO(RTX) \
1590 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1592 /* Force the REGNO macro to only be used on the lhs. */
1593 static inline unsigned int
1594 rhs_regno (const_rtx x
)
1596 return XCUINT (x
, 0, REG
);
1600 /* 1 if RTX is a reg or parallel that is the current function's return
1602 #define REG_FUNCTION_VALUE_P(RTX) \
1603 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1605 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1606 #define REG_USERVAR_P(RTX) \
1607 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1609 /* 1 if RTX is a reg that holds a pointer value. */
1610 #define REG_POINTER(RTX) \
1611 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1613 /* 1 if RTX is a mem that holds a pointer value. */
1614 #define MEM_POINTER(RTX) \
1615 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1617 /* 1 if the given register REG corresponds to a hard register. */
1618 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1620 /* 1 if the given register number REG_NO corresponds to a hard register. */
1621 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1623 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1624 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1625 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1627 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1628 elements actually needed to represent the constant.
1629 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1630 significant HOST_WIDE_INT. */
1631 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1632 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1633 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1635 /* For a CONST_DOUBLE:
1636 #if TARGET_SUPPORTS_WIDE_INT == 0
1637 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1638 low-order word and ..._HIGH the high-order.
1640 For a float, there is a REAL_VALUE_TYPE structure, and
1641 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1642 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1643 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1644 #define CONST_DOUBLE_REAL_VALUE(r) \
1645 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1647 #define CONST_FIXED_VALUE(r) \
1648 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1649 #define CONST_FIXED_VALUE_HIGH(r) \
1650 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1651 #define CONST_FIXED_VALUE_LOW(r) \
1652 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1654 /* For a CONST_VECTOR, return element #n. */
1655 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1657 /* For a CONST_VECTOR, return the number of elements in a vector. */
1658 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1660 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1661 SUBREG_BYTE extracts the byte-number. */
1663 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1664 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1667 /* Return the right cost to give to an operation
1668 to make the cost of the corresponding register-to-register instruction
1669 N times that of a fast register-to-register instruction. */
1670 #define COSTS_N_INSNS(N) ((N) * 4)
1672 /* Maximum cost of an rtl expression. This value has the special meaning
1673 not to use an rtx with this cost under any circumstances. */
1674 #define MAX_COST INT_MAX
1676 /* A structure to hold all available cost information about an rtl
1678 struct full_rtx_costs
1684 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1686 init_costs_to_max (struct full_rtx_costs
*c
)
1688 c
->speed
= MAX_COST
;
1692 /* Initialize a full_rtx_costs structure C to zero cost. */
1694 init_costs_to_zero (struct full_rtx_costs
*c
)
1700 /* Compare two full_rtx_costs structures A and B, returning true
1701 if A < B when optimizing for speed. */
1703 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1707 return (a
->speed
< b
->speed
1708 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1710 return (a
->size
< b
->size
1711 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1714 /* Increase both members of the full_rtx_costs structure C by the
1717 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1719 c
->speed
+= COSTS_N_INSNS (n
);
1720 c
->size
+= COSTS_N_INSNS (n
);
1723 /* Information about an address. This structure is supposed to be able
1724 to represent all supported target addresses. Please extend it if it
1725 is not yet general enough. */
1726 struct address_info
{
1727 /* The mode of the value being addressed, or VOIDmode if this is
1728 a load-address operation with no known address mode. */
1729 enum machine_mode mode
;
1731 /* The address space. */
1734 /* A pointer to the top-level address. */
1737 /* A pointer to the inner address, after all address mutations
1738 have been stripped from the top-level address. It can be one
1741 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
1743 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
1744 points to the step value, depending on whether the step is variable
1745 or constant respectively. SEGMENT is null.
1747 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
1748 with null fields evaluating to 0. */
1751 /* Components that make up *INNER. Each one may be null or nonnull.
1752 When nonnull, their meanings are as follows:
1754 - *SEGMENT is the "segment" of memory to which the address refers.
1755 This value is entirely target-specific and is only called a "segment"
1756 because that's its most typical use. It contains exactly one UNSPEC,
1757 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
1760 - *BASE is a variable expression representing a base address.
1761 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
1763 - *INDEX is a variable expression representing an index value.
1764 It may be a scaled expression, such as a MULT. It has exactly
1765 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
1767 - *DISP is a constant, possibly mutated. DISP_TERM points to the
1768 unmutated RTX_CONST_OBJ. */
1779 /* In a {PRE,POST}_MODIFY address, this points to a second copy
1780 of BASE_TERM, otherwise it is null. */
1783 /* ADDRESS if this structure describes an address operand, MEM if
1784 it describes a MEM address. */
1785 enum rtx_code addr_outer_code
;
1787 /* If BASE is nonnull, this is the code of the rtx that contains it. */
1788 enum rtx_code base_outer_code
;
1790 /* True if this is an RTX_AUTOINC address. */
1794 /* This is used to bundle an rtx and a mode together so that the pair
1795 can be used with the wi:: routines. If we ever put modes into rtx
1796 integer constants, this should go away and then just pass an rtx in. */
1797 typedef std::pair
<rtx
, enum machine_mode
> rtx_mode_t
;
1802 struct int_traits
<rtx_mode_t
>
1804 static const enum precision_type precision_type
= VAR_PRECISION
;
1805 static const bool host_dependent_precision
= false;
1806 /* This ought to be true, except for the special case that BImode
1807 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
1808 static const bool is_sign_extended
= false;
1809 static unsigned int get_precision (const rtx_mode_t
&);
1810 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
1811 const rtx_mode_t
&);
1816 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
1818 return GET_MODE_PRECISION (x
.second
);
1821 inline wi::storage_ref
1822 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
1823 unsigned int precision
,
1824 const rtx_mode_t
&x
)
1826 gcc_checking_assert (precision
== get_precision (x
));
1827 switch (GET_CODE (x
.first
))
1830 if (precision
< HOST_BITS_PER_WIDE_INT
)
1831 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
1832 targets is 1 rather than -1. */
1833 gcc_checking_assert (INTVAL (x
.first
)
1834 == sext_hwi (INTVAL (x
.first
), precision
)
1835 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
1837 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
1839 case CONST_WIDE_INT
:
1840 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
1841 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
1843 #if TARGET_SUPPORTS_WIDE_INT == 0
1845 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
1855 hwi_with_prec
shwi (HOST_WIDE_INT
, enum machine_mode mode
);
1856 wide_int
min_value (enum machine_mode
, signop
);
1857 wide_int
max_value (enum machine_mode
, signop
);
1860 inline wi::hwi_with_prec
1861 wi::shwi (HOST_WIDE_INT val
, enum machine_mode mode
)
1863 return shwi (val
, GET_MODE_PRECISION (mode
));
1866 /* Produce the smallest number that is represented in MODE. The precision
1867 is taken from MODE and the sign from SGN. */
1869 wi::min_value (enum machine_mode mode
, signop sgn
)
1871 return min_value (GET_MODE_PRECISION (mode
), sgn
);
1874 /* Produce the largest number that is represented in MODE. The precision
1875 is taken from MODE and the sign from SGN. */
1877 wi::max_value (enum machine_mode mode
, signop sgn
)
1879 return max_value (GET_MODE_PRECISION (mode
), sgn
);
1882 extern void init_rtlanal (void);
1883 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
1884 extern int address_cost (rtx
, enum machine_mode
, addr_space_t
, bool);
1885 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
1886 struct full_rtx_costs
*);
1887 extern unsigned int subreg_lsb (const_rtx
);
1888 extern unsigned int subreg_lsb_1 (enum machine_mode
, enum machine_mode
,
1890 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode
,
1891 unsigned int, enum machine_mode
);
1892 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode
,
1893 unsigned int, enum machine_mode
);
1894 extern unsigned int subreg_regno (const_rtx
);
1895 extern int simplify_subreg_regno (unsigned int, enum machine_mode
,
1896 unsigned int, enum machine_mode
);
1897 extern unsigned int subreg_nregs (const_rtx
);
1898 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
1899 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, enum machine_mode
);
1900 extern unsigned int num_sign_bit_copies (const_rtx
, enum machine_mode
);
1901 extern bool constant_pool_constant_p (rtx
);
1902 extern bool truncated_to_mode (enum machine_mode
, const_rtx
);
1903 extern int low_bitmask_len (enum machine_mode
, unsigned HOST_WIDE_INT
);
1904 extern void split_double (rtx
, rtx
*, rtx
*);
1905 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
1906 extern void decompose_address (struct address_info
*, rtx
*,
1907 enum machine_mode
, addr_space_t
, enum rtx_code
);
1908 extern void decompose_lea_address (struct address_info
*, rtx
*);
1909 extern void decompose_mem_address (struct address_info
*, rtx
);
1910 extern void update_address (struct address_info
*);
1911 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
1912 extern enum rtx_code
get_index_code (const struct address_info
*);
1914 #ifndef GENERATOR_FILE
1915 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
1916 rather than size. */
1919 set_rtx_cost (rtx x
, bool speed_p
)
1921 return rtx_cost (x
, INSN
, 4, speed_p
);
1924 /* Like set_rtx_cost, but return both the speed and size costs in C. */
1927 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
1929 get_full_rtx_cost (x
, INSN
, 4, c
);
1932 /* Return the cost of moving X into a register, relative to the cost
1933 of a register move. SPEED_P is true if optimizing for speed rather
1937 set_src_cost (rtx x
, bool speed_p
)
1939 return rtx_cost (x
, SET
, 1, speed_p
);
1942 /* Like set_src_cost, but return both the speed and size costs in C. */
1945 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
1947 get_full_rtx_cost (x
, SET
, 1, c
);
1951 /* 1 if RTX is a subreg containing a reg that is already known to be
1952 sign- or zero-extended from the mode of the subreg to the mode of
1953 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
1956 When used as a LHS, is means that this extension must be done
1957 when assigning to SUBREG_REG. */
1959 #define SUBREG_PROMOTED_VAR_P(RTX) \
1960 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
1962 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
1963 this gives the necessary extensions:
1964 0 - signed (SPR_SIGNED)
1965 1 - normal unsigned (SPR_UNSIGNED)
1966 2 - value is both sign and unsign extended for mode
1967 (SPR_SIGNED_AND_UNSIGNED).
1968 -1 - pointer unsigned, which most often can be handled like unsigned
1969 extension, except for generating instructions where we need to
1970 emit special code (ptr_extend insns) on some architectures
1973 const int SRP_POINTER
= -1;
1974 const int SRP_SIGNED
= 0;
1975 const int SRP_UNSIGNED
= 1;
1976 const int SRP_SIGNED_AND_UNSIGNED
= 2;
1978 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
1979 #define SUBREG_PROMOTED_SET(RTX, VAL) \
1981 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
1986 _rtx->volatil = 0; \
1987 _rtx->unchanging = 0; \
1990 _rtx->volatil = 0; \
1991 _rtx->unchanging = 1; \
1993 case SRP_UNSIGNED: \
1994 _rtx->volatil = 1; \
1995 _rtx->unchanging = 0; \
1997 case SRP_SIGNED_AND_UNSIGNED: \
1998 _rtx->volatil = 1; \
1999 _rtx->unchanging = 1; \
2004 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2005 including SRP_SIGNED_AND_UNSIGNED if promoted for
2006 both signed and unsigned. */
2007 #define SUBREG_PROMOTED_GET(RTX) \
2008 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2009 + (RTX)->unchanging - 1)
2011 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2012 #define SUBREG_PROMOTED_SIGN(RTX) \
2013 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2014 : (RTX)->unchanging - 1)
2016 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2018 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2019 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2021 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2022 for UNSIGNED type. */
2023 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2024 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2026 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2027 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2028 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2029 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2030 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2032 /* True if the subreg was generated by LRA for reload insns. Such
2033 subregs are valid only during LRA. */
2034 #define LRA_SUBREG_P(RTX) \
2035 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2037 /* Access various components of an ASM_OPERANDS rtx. */
2039 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2040 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2041 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2042 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2043 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2044 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2045 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2046 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2047 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2048 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2049 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2050 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2051 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2052 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2053 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2054 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2055 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2056 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2058 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2059 #define MEM_READONLY_P(RTX) \
2060 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2062 /* 1 if RTX is a mem and we should keep the alias set for this mem
2063 unchanged when we access a component. Set to 1, or example, when we
2064 are already in a non-addressable component of an aggregate. */
2065 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2066 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2068 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2069 #define MEM_VOLATILE_P(RTX) \
2070 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2071 ASM_INPUT)->volatil)
2073 /* 1 if RTX is a mem that cannot trap. */
2074 #define MEM_NOTRAP_P(RTX) \
2075 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2077 /* The memory attribute block. We provide access macros for each value
2078 in the block and provide defaults if none specified. */
2079 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2081 /* The register attribute block. We provide access macros for each value
2082 in the block and provide defaults if none specified. */
2083 #define REG_ATTRS(RTX) X0REGATTR (RTX, 1)
2085 #ifndef GENERATOR_FILE
2086 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2087 set, and may alias anything. Otherwise, the MEM can only alias
2088 MEMs in a conflicting alias set. This value is set in a
2089 language-dependent manner in the front-end, and should not be
2090 altered in the back-end. These set numbers are tested with
2091 alias_sets_conflict_p. */
2092 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2094 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2095 refer to part of a DECL. It may also be a COMPONENT_REF. */
2096 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2098 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2099 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2101 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2102 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2104 /* For a MEM rtx, the address space. */
2105 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2107 /* For a MEM rtx, true if its MEM_SIZE is known. */
2108 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2110 /* For a MEM rtx, the size in bytes of the MEM. */
2111 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2113 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2114 mode as a default when STRICT_ALIGNMENT, but not if not. */
2115 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2117 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2120 /* For a REG rtx, the decl it is known to refer to, if it is known to
2121 refer to part of a DECL. */
2122 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2124 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2126 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2128 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2129 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2130 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2131 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2132 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2133 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2134 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2135 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2137 /* 1 if RTX is a label_ref for a nonlocal label. */
2138 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2139 REG_LABEL_TARGET note. */
2140 #define LABEL_REF_NONLOCAL_P(RTX) \
2141 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2143 /* 1 if RTX is a code_label that should always be considered to be needed. */
2144 #define LABEL_PRESERVE_P(RTX) \
2145 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2147 /* During sched, 1 if RTX is an insn that must be scheduled together
2148 with the preceding insn. */
2149 #define SCHED_GROUP_P(RTX) \
2150 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2151 JUMP_INSN, CALL_INSN)->in_struct)
2153 /* For a SET rtx, SET_DEST is the place that is set
2154 and SET_SRC is the value it is set to. */
2155 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2156 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2157 #define SET_IS_RETURN_P(RTX) \
2158 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2160 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2161 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2162 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2164 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2165 conditionally executing the code on, COND_EXEC_CODE is the code
2166 to execute if the condition is true. */
2167 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2168 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2170 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2172 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2173 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2175 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2176 tree constant pool. This information is private to varasm.c. */
2177 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2178 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2179 (RTX), SYMBOL_REF)->frame_related)
2181 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2182 #define SYMBOL_REF_FLAG(RTX) \
2183 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2185 /* 1 if RTX is a symbol_ref that has been the library function in
2186 emit_library_call. */
2187 #define SYMBOL_REF_USED(RTX) \
2188 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2190 /* 1 if RTX is a symbol_ref for a weak symbol. */
2191 #define SYMBOL_REF_WEAK(RTX) \
2192 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2194 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2195 SYMBOL_REF_CONSTANT. */
2196 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2198 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2200 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2201 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2203 /* The tree (decl or constant) associated with the symbol, or null. */
2204 #define SYMBOL_REF_DECL(RTX) \
2205 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2207 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2208 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2209 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2211 /* The rtx constant pool entry for a symbol, or null. */
2212 #define SYMBOL_REF_CONSTANT(RTX) \
2213 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2215 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2216 information derivable from the tree decl associated with this symbol.
2217 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2218 decl. In some cases this is a bug. But beyond that, it's nice to cache
2219 this information to avoid recomputing it. Finally, this allows space for
2220 the target to store more than one bit of information, as with
2222 #define SYMBOL_REF_FLAGS(RTX) \
2223 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2224 ->u2.symbol_ref_flags)
2226 /* These flags are common enough to be defined for all targets. They
2227 are computed by the default version of targetm.encode_section_info. */
2229 /* Set if this symbol is a function. */
2230 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2231 #define SYMBOL_REF_FUNCTION_P(RTX) \
2232 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2233 /* Set if targetm.binds_local_p is true. */
2234 #define SYMBOL_FLAG_LOCAL (1 << 1)
2235 #define SYMBOL_REF_LOCAL_P(RTX) \
2236 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2237 /* Set if targetm.in_small_data_p is true. */
2238 #define SYMBOL_FLAG_SMALL (1 << 2)
2239 #define SYMBOL_REF_SMALL_P(RTX) \
2240 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2241 /* The three-bit field at [5:3] is true for TLS variables; use
2242 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2243 #define SYMBOL_FLAG_TLS_SHIFT 3
2244 #define SYMBOL_REF_TLS_MODEL(RTX) \
2245 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2246 /* Set if this symbol is not defined in this translation unit. */
2247 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2248 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2249 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2250 /* Set if this symbol has a block_symbol structure associated with it. */
2251 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2252 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2253 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2254 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2255 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2256 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2257 #define SYMBOL_REF_ANCHOR_P(RTX) \
2258 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2260 /* Subsequent bits are available for the target to use. */
2261 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2262 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2264 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2265 structure to which the symbol belongs, or NULL if it has not been
2266 assigned a block. */
2267 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2269 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2270 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2271 RTX has not yet been assigned to a block, or it has not been given an
2272 offset within that block. */
2273 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2275 /* True if RTX is flagged to be a scheduling barrier. */
2276 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2277 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2279 /* Indicate whether the machine has any sort of auto increment addressing.
2280 If not, we can avoid checking for REG_INC notes. */
2282 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2283 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2284 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2285 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2286 #define AUTO_INC_DEC
2289 /* Define a macro to look for REG_INC notes,
2290 but save time on machines where they never exist. */
2293 #define FIND_REG_INC_NOTE(INSN, REG) \
2294 ((REG) != NULL_RTX && REG_P ((REG)) \
2295 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2296 : find_reg_note ((INSN), REG_INC, (REG)))
2298 #define FIND_REG_INC_NOTE(INSN, REG) 0
2301 #ifndef HAVE_PRE_INCREMENT
2302 #define HAVE_PRE_INCREMENT 0
2305 #ifndef HAVE_PRE_DECREMENT
2306 #define HAVE_PRE_DECREMENT 0
2309 #ifndef HAVE_POST_INCREMENT
2310 #define HAVE_POST_INCREMENT 0
2313 #ifndef HAVE_POST_DECREMENT
2314 #define HAVE_POST_DECREMENT 0
2317 #ifndef HAVE_POST_MODIFY_DISP
2318 #define HAVE_POST_MODIFY_DISP 0
2321 #ifndef HAVE_POST_MODIFY_REG
2322 #define HAVE_POST_MODIFY_REG 0
2325 #ifndef HAVE_PRE_MODIFY_DISP
2326 #define HAVE_PRE_MODIFY_DISP 0
2329 #ifndef HAVE_PRE_MODIFY_REG
2330 #define HAVE_PRE_MODIFY_REG 0
2334 /* Some architectures do not have complete pre/post increment/decrement
2335 instruction sets, or only move some modes efficiently. These macros
2336 allow us to tune autoincrement generation. */
2338 #ifndef USE_LOAD_POST_INCREMENT
2339 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2342 #ifndef USE_LOAD_POST_DECREMENT
2343 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2346 #ifndef USE_LOAD_PRE_INCREMENT
2347 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2350 #ifndef USE_LOAD_PRE_DECREMENT
2351 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2354 #ifndef USE_STORE_POST_INCREMENT
2355 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2358 #ifndef USE_STORE_POST_DECREMENT
2359 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2362 #ifndef USE_STORE_PRE_INCREMENT
2363 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2366 #ifndef USE_STORE_PRE_DECREMENT
2367 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2370 /* Nonzero when we are generating CONCATs. */
2371 extern int generating_concat_p
;
2373 /* Nonzero when we are expanding trees to RTL. */
2374 extern int currently_expanding_to_rtl
;
2376 /* Generally useful functions. */
2379 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, enum machine_mode
);
2380 extern rtx
plus_constant (enum machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2383 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
2384 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2385 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2386 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2387 #define const_wide_int_alloc(NWORDS) \
2388 rtx_alloc_v (CONST_WIDE_INT, \
2389 (sizeof (struct hwivec_def) \
2390 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2392 extern rtvec rtvec_alloc (int);
2393 extern rtvec
shallow_copy_rtvec (rtvec
);
2394 extern bool shared_const_p (const_rtx
);
2395 extern rtx
copy_rtx (rtx
);
2396 extern void dump_rtx_statistics (void);
2399 extern rtx
copy_rtx_if_shared (rtx
);
2402 extern unsigned int rtx_size (const_rtx
);
2403 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
2404 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2405 extern int rtx_equal_p (const_rtx
, const_rtx
);
2408 extern rtvec
gen_rtvec_v (int, rtx
*);
2409 extern rtx
gen_reg_rtx (enum machine_mode
);
2410 extern rtx
gen_rtx_REG_offset (rtx
, enum machine_mode
, unsigned int, int);
2411 extern rtx
gen_reg_rtx_offset (rtx
, enum machine_mode
, int);
2412 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2413 extern rtx_code_label
*gen_label_rtx (void);
2414 extern rtx
gen_lowpart_common (enum machine_mode
, rtx
);
2417 extern rtx
gen_lowpart_if_possible (enum machine_mode
, rtx
);
2420 extern rtx
gen_highpart (enum machine_mode
, rtx
);
2421 extern rtx
gen_highpart_mode (enum machine_mode
, enum machine_mode
, rtx
);
2422 extern rtx
operand_subword (rtx
, unsigned int, int, enum machine_mode
);
2425 extern rtx
operand_subword_force (rtx
, unsigned int, enum machine_mode
);
2426 extern bool paradoxical_subreg_p (const_rtx
);
2427 extern int subreg_lowpart_p (const_rtx
);
2428 extern unsigned int subreg_lowpart_offset (enum machine_mode
,
2430 extern unsigned int subreg_highpart_offset (enum machine_mode
,
2432 extern int byte_lowpart_offset (enum machine_mode
, enum machine_mode
);
2433 extern rtx
make_safe_from (rtx
, rtx
);
2434 extern rtx
convert_memory_address_addr_space (enum machine_mode
, rtx
,
2436 #define convert_memory_address(to_mode,x) \
2437 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2438 extern const char *get_insn_name (int);
2439 extern rtx_insn
*get_last_insn_anywhere (void);
2440 extern rtx
get_first_nonnote_insn (void);
2441 extern rtx
get_last_nonnote_insn (void);
2442 extern void start_sequence (void);
2443 extern void push_to_sequence (rtx_insn
*);
2444 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
2445 extern void end_sequence (void);
2446 #if TARGET_SUPPORTS_WIDE_INT == 0
2447 extern double_int
rtx_to_double_int (const_rtx
);
2449 extern void cwi_output_hex (FILE *, const_rtx
);
2450 #ifndef GENERATOR_FILE
2451 extern rtx
immed_wide_int_const (const wide_int_ref
&, enum machine_mode
);
2453 #if TARGET_SUPPORTS_WIDE_INT == 0
2454 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
2460 extern rtx
lowpart_subreg (enum machine_mode
, rtx
, enum machine_mode
);
2463 extern rtx
force_const_mem (enum machine_mode
, rtx
);
2468 extern rtx
get_pool_constant (rtx
);
2469 extern rtx
get_pool_constant_mark (rtx
, bool *);
2470 extern enum machine_mode
get_pool_mode (const_rtx
);
2471 extern rtx
simplify_subtraction (rtx
);
2472 extern void decide_function_section (tree
);
2475 extern rtx
assign_stack_local (enum machine_mode
, HOST_WIDE_INT
, int);
2476 #define ASLK_REDUCE_ALIGN 1
2477 #define ASLK_RECORD_PAD 2
2478 extern rtx
assign_stack_local_1 (enum machine_mode
, HOST_WIDE_INT
, int, int);
2479 extern rtx
assign_stack_temp (enum machine_mode
, HOST_WIDE_INT
);
2480 extern rtx
assign_stack_temp_for_type (enum machine_mode
, HOST_WIDE_INT
, tree
);
2481 extern rtx
assign_temp (tree
, int, int);
2484 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
2485 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx
, basic_block
);
2486 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx
, int);
2487 extern rtx_insn
*emit_jump_insn_before (rtx
, rtx
);
2488 extern rtx_insn
*emit_jump_insn_before_noloc (rtx
, rtx
);
2489 extern rtx_insn
*emit_jump_insn_before_setloc (rtx
, rtx
, int);
2490 extern rtx_insn
*emit_call_insn_before (rtx
, rtx
);
2491 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx
);
2492 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx
, int);
2493 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx
);
2494 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
2495 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
2496 extern rtx_barrier
*emit_barrier_before (rtx
);
2497 extern rtx_insn
*emit_label_before (rtx
, rtx
);
2498 extern rtx_note
*emit_note_before (enum insn_note
, rtx
);
2499 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
2500 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
2501 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
2502 extern rtx_insn
*emit_jump_insn_after (rtx
, rtx
);
2503 extern rtx_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
2504 extern rtx_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
2505 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
2506 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
2507 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
2508 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
2509 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
2510 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
2511 extern rtx_barrier
*emit_barrier_after (rtx
);
2512 extern rtx_insn
*emit_label_after (rtx
, rtx
);
2513 extern rtx_note
*emit_note_after (enum insn_note
, rtx
);
2514 extern rtx_insn
*emit_insn (rtx
);
2515 extern rtx_insn
*emit_debug_insn (rtx
);
2516 extern rtx_insn
*emit_jump_insn (rtx
);
2517 extern rtx_insn
*emit_call_insn (rtx
);
2518 extern rtx_insn
*emit_label (rtx
);
2519 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
2520 extern rtx_barrier
*emit_barrier (void);
2521 extern rtx_note
*emit_note (enum insn_note
);
2522 extern rtx_note
*emit_note_copy (rtx_note
*);
2523 extern rtx_insn
*gen_clobber (rtx
);
2524 extern rtx_insn
*emit_clobber (rtx
);
2525 extern rtx_insn
*gen_use (rtx
);
2526 extern rtx_insn
*emit_use (rtx
);
2527 extern rtx_insn
*make_insn_raw (rtx
);
2528 extern void add_function_usage_to (rtx
, rtx
);
2529 extern rtx_call_insn
*last_call_insn (void);
2530 extern rtx_insn
*previous_insn (rtx
);
2531 extern rtx_insn
*next_insn (rtx
);
2532 extern rtx_insn
*prev_nonnote_insn (rtx
);
2533 extern rtx_insn
*prev_nonnote_insn_bb (rtx
);
2534 extern rtx_insn
*next_nonnote_insn (rtx
);
2535 extern rtx_insn
*next_nonnote_insn_bb (rtx
);
2536 extern rtx_insn
*prev_nondebug_insn (rtx
);
2537 extern rtx_insn
*next_nondebug_insn (rtx
);
2538 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx
);
2539 extern rtx_insn
*next_nonnote_nondebug_insn (rtx
);
2540 extern rtx_insn
*prev_real_insn (rtx
);
2541 extern rtx_insn
*next_real_insn (rtx
);
2542 extern rtx_insn
*prev_active_insn (rtx
);
2543 extern rtx_insn
*next_active_insn (rtx
);
2544 extern int active_insn_p (const_rtx
);
2545 extern rtx_insn
*next_cc0_user (rtx
);
2546 extern rtx_insn
*prev_cc0_setter (rtx
);
2549 extern int insn_line (const_rtx
);
2550 extern const char * insn_file (const_rtx
);
2551 extern tree
insn_scope (const_rtx
);
2552 extern expanded_location
insn_location (const_rtx
);
2553 extern location_t prologue_location
, epilogue_location
;
2556 extern enum rtx_code
reverse_condition (enum rtx_code
);
2557 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
2558 extern enum rtx_code
swap_condition (enum rtx_code
);
2559 extern enum rtx_code
unsigned_condition (enum rtx_code
);
2560 extern enum rtx_code
signed_condition (enum rtx_code
);
2561 extern void mark_jump_label (rtx
, rtx
, int);
2564 extern rtx_insn
*delete_related_insns (rtx
);
2567 extern rtx
*find_constant_term_loc (rtx
*);
2570 extern rtx_insn
*try_split (rtx
, rtx
, int);
2571 extern int split_branch_probability
;
2573 /* In unknown file */
2574 extern rtx
split_insns (rtx
, rtx
);
2576 /* In simplify-rtx.c */
2577 extern rtx
simplify_const_unary_operation (enum rtx_code
, enum machine_mode
,
2578 rtx
, enum machine_mode
);
2579 extern rtx
simplify_unary_operation (enum rtx_code
, enum machine_mode
, rtx
,
2581 extern rtx
simplify_const_binary_operation (enum rtx_code
, enum machine_mode
,
2583 extern rtx
simplify_binary_operation (enum rtx_code
, enum machine_mode
, rtx
,
2585 extern rtx
simplify_ternary_operation (enum rtx_code
, enum machine_mode
,
2586 enum machine_mode
, rtx
, rtx
, rtx
);
2587 extern rtx
simplify_const_relational_operation (enum rtx_code
,
2588 enum machine_mode
, rtx
, rtx
);
2589 extern rtx
simplify_relational_operation (enum rtx_code
, enum machine_mode
,
2590 enum machine_mode
, rtx
, rtx
);
2591 extern rtx
simplify_gen_binary (enum rtx_code
, enum machine_mode
, rtx
, rtx
);
2592 extern rtx
simplify_gen_unary (enum rtx_code
, enum machine_mode
, rtx
,
2594 extern rtx
simplify_gen_ternary (enum rtx_code
, enum machine_mode
,
2595 enum machine_mode
, rtx
, rtx
, rtx
);
2596 extern rtx
simplify_gen_relational (enum rtx_code
, enum machine_mode
,
2597 enum machine_mode
, rtx
, rtx
);
2598 extern rtx
simplify_subreg (enum machine_mode
, rtx
, enum machine_mode
,
2600 extern rtx
simplify_gen_subreg (enum machine_mode
, rtx
, enum machine_mode
,
2602 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
2603 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
2604 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
2605 extern rtx
simplify_rtx (const_rtx
);
2606 extern rtx
avoid_constant_pool_reference (rtx
);
2607 extern rtx
delegitimize_mem_from_attrs (rtx
);
2608 extern bool mode_signbit_p (enum machine_mode
, const_rtx
);
2609 extern bool val_signbit_p (enum machine_mode
, unsigned HOST_WIDE_INT
);
2610 extern bool val_signbit_known_set_p (enum machine_mode
,
2611 unsigned HOST_WIDE_INT
);
2612 extern bool val_signbit_known_clear_p (enum machine_mode
,
2613 unsigned HOST_WIDE_INT
);
2616 extern enum machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
2620 extern rtx
set_for_reg_notes (rtx
);
2621 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
2622 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
2623 extern void set_insn_deleted (rtx
);
2625 /* Functions in rtlanal.c */
2627 /* Single set is implemented as macro for performance reasons. */
2628 #define single_set(I) (INSN_P (I) \
2629 ? (GET_CODE (PATTERN (I)) == SET \
2630 ? PATTERN (I) : single_set_1 (I)) \
2632 #define single_set_1(I) single_set_2 (I, PATTERN (I))
2634 /* Structure used for passing data to REPLACE_LABEL. */
2635 struct replace_label_data
2639 bool update_label_nuses
;
2642 extern enum machine_mode
get_address_mode (rtx mem
);
2643 extern int rtx_addr_can_trap_p (const_rtx
);
2644 extern bool nonzero_address_p (const_rtx
);
2645 extern int rtx_unstable_p (const_rtx
);
2646 extern bool rtx_varies_p (const_rtx
, bool);
2647 extern bool rtx_addr_varies_p (const_rtx
, bool);
2648 extern rtx
get_call_rtx_from (rtx
);
2649 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2650 extern rtx
get_related_value (const_rtx
);
2651 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2652 extern void split_const (rtx
, rtx
*, rtx
*);
2653 extern bool unsigned_reg_p (rtx
);
2654 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2655 extern int count_occurrences (const_rtx
, const_rtx
, int);
2656 extern int reg_referenced_p (const_rtx
, const_rtx
);
2657 extern int reg_used_between_p (const_rtx
, const_rtx
, const_rtx
);
2658 extern int reg_set_between_p (const_rtx
, const_rtx
, const_rtx
);
2659 extern int commutative_operand_precedence (rtx
);
2660 extern bool swap_commutative_operands_p (rtx
, rtx
);
2661 extern int modified_between_p (const_rtx
, const_rtx
, const_rtx
);
2662 extern int no_labels_between_p (const_rtx
, const_rtx
);
2663 extern int modified_in_p (const_rtx
, const_rtx
);
2664 extern int reg_set_p (const_rtx
, const_rtx
);
2665 extern rtx
single_set_2 (const_rtx
, const_rtx
);
2666 extern int multiple_sets (const_rtx
);
2667 extern int set_noop_p (const_rtx
);
2668 extern int noop_move_p (const_rtx
);
2669 extern rtx
find_last_value (rtx
, rtx
*, rtx
, int);
2670 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2671 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2672 extern const_rtx
set_of (const_rtx
, const_rtx
);
2673 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2674 extern void record_hard_reg_uses (rtx
*, void *);
2676 extern void find_all_hard_reg_sets (const_rtx
, HARD_REG_SET
*, bool);
2678 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2679 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2680 extern int dead_or_set_p (const_rtx
, const_rtx
);
2681 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2682 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2683 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2684 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2685 extern rtx
find_constant_src (const_rtx
);
2686 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2687 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2688 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2689 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2690 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2691 extern void add_shallow_copy_of_reg_note (rtx
, rtx
);
2692 extern void remove_note (rtx
, const_rtx
);
2693 extern void remove_reg_equal_equiv_notes (rtx
);
2694 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2695 extern int side_effects_p (const_rtx
);
2696 extern int volatile_refs_p (const_rtx
);
2697 extern int volatile_insn_p (const_rtx
);
2698 extern int may_trap_p_1 (const_rtx
, unsigned);
2699 extern int may_trap_p (const_rtx
);
2700 extern int may_trap_or_fault_p (const_rtx
);
2701 extern bool can_throw_internal (const_rtx
);
2702 extern bool can_throw_external (const_rtx
);
2703 extern bool insn_could_throw_p (const_rtx
);
2704 extern bool insn_nothrow_p (const_rtx
);
2705 extern bool can_nonlocal_goto (const_rtx
);
2706 extern void copy_reg_eh_region_note_forward (rtx
, rtx
, rtx
);
2707 extern void copy_reg_eh_region_note_backward (rtx
, rtx
, rtx
);
2708 extern int inequality_comparisons_p (const_rtx
);
2709 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2710 extern int replace_label (rtx
*, void *);
2711 extern int rtx_referenced_p (rtx
, rtx
);
2712 extern bool tablejump_p (const_rtx
, rtx
*, rtx_jump_table_data
**);
2713 extern int computed_jump_p (const_rtx
);
2714 extern bool tls_referenced_p (rtx
);
2716 typedef int (*rtx_function
) (rtx
*, void *);
2717 extern int for_each_rtx (rtx
*, rtx_function
, void *);
2718 extern int for_each_rtx_in_insn (rtx_insn
**, rtx_function
, void *);
2720 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2721 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2722 NULL. The callback is passed the same opaque ARG passed to
2723 for_each_inc_dec. Return zero to continue looking for other
2724 autoinc operations, -1 to skip OP's operands, and any other value
2725 to interrupt the traversal and return that value to the caller of
2726 for_each_inc_dec. */
2727 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
2728 rtx srcoff
, void *arg
);
2729 extern int for_each_inc_dec (rtx_insn
**, for_each_inc_dec_fn
, void *arg
);
2731 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
2733 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
2734 rtx_equal_p_callback_function
);
2736 typedef int (*hash_rtx_callback_function
) (const_rtx
, enum machine_mode
, rtx
*,
2737 enum machine_mode
*);
2738 extern unsigned hash_rtx_cb (const_rtx
, enum machine_mode
, int *, int *,
2739 bool, hash_rtx_callback_function
);
2741 extern rtx
regno_use_in (unsigned int, rtx
);
2742 extern int auto_inc_p (const_rtx
);
2743 extern int in_expr_list_p (const_rtx
, const_rtx
);
2744 extern void remove_node_from_expr_list (const_rtx
, rtx
*);
2745 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
2746 extern rtx_insn
*find_first_parameter_load (rtx
, rtx
);
2747 extern bool keep_with_call_p (const_rtx
);
2748 extern bool label_is_jump_target_p (const_rtx
, const_rtx
);
2749 extern int insn_rtx_cost (rtx
, bool);
2751 /* Given an insn and condition, return a canonical description of
2752 the test being made. */
2753 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
2756 /* Given a JUMP_INSN, return a canonical description of the test
2758 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
2760 /* Information about a subreg of a hard register. */
2763 /* Offset of first hard register involved in the subreg. */
2765 /* Number of hard registers involved in the subreg. */
2767 /* Whether this subreg can be represented as a hard reg with the new
2769 bool representable_p
;
2772 extern void subreg_get_info (unsigned int, enum machine_mode
,
2773 unsigned int, enum machine_mode
,
2774 struct subreg_info
*);
2778 extern void free_EXPR_LIST_list (rtx
*);
2779 extern void free_INSN_LIST_list (rtx_insn_list
**);
2780 extern void free_EXPR_LIST_node (rtx
);
2781 extern void free_INSN_LIST_node (rtx
);
2782 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
2783 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
2784 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
2785 extern rtx
alloc_EXPR_LIST (int, rtx
, rtx
);
2786 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
2787 extern rtx
remove_list_elem (rtx
, rtx
*);
2788 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
2789 extern rtx
remove_free_EXPR_LIST_node (rtx
*);
2794 /* Resize reg info. */
2795 extern bool resize_reg_info (void);
2796 /* Free up register info memory. */
2797 extern void free_reg_info (void);
2798 extern void init_subregs_of_mode (void);
2799 extern void finish_subregs_of_mode (void);
2802 extern rtx
extract_asm_operands (rtx
);
2803 extern int asm_noperands (const_rtx
);
2804 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
2805 enum machine_mode
*, location_t
*);
2806 extern void get_referenced_operands (const char *, bool *, unsigned int);
2808 extern enum reg_class
reg_preferred_class (int);
2809 extern enum reg_class
reg_alternate_class (int);
2810 extern enum reg_class
reg_allocno_class (int);
2811 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
2814 extern void split_all_insns (void);
2815 extern unsigned int split_all_insns_noflow (void);
2817 #define MAX_SAVED_CONST_INT 64
2818 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
2820 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
2821 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
2822 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
2823 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
2824 extern GTY(()) rtx const_true_rtx
;
2826 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
2828 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
2829 same as VOIDmode. */
2831 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
2833 /* Likewise, for the constants 1 and 2 and -1. */
2835 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
2836 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
2837 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
2839 extern GTY(()) rtx pc_rtx
;
2840 extern GTY(()) rtx cc0_rtx
;
2841 extern GTY(()) rtx ret_rtx
;
2842 extern GTY(()) rtx simple_return_rtx
;
2844 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
2845 is used to represent the frame pointer. This is because the
2846 hard frame pointer and the automatic variables are separated by an amount
2847 that cannot be determined until after register allocation. We can assume
2848 that in this case ELIMINABLE_REGS will be defined, one action of which
2849 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
2850 #ifndef HARD_FRAME_POINTER_REGNUM
2851 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
2854 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
2855 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
2856 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
2859 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
2860 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
2861 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
2864 /* Index labels for global_rtl. */
2865 enum global_rtl_index
2869 /* For register elimination to work properly these hard_frame_pointer_rtx,
2870 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
2871 the same register. */
2872 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
2873 GR_ARG_POINTER
= GR_FRAME_POINTER
,
2875 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
2876 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
2878 GR_HARD_FRAME_POINTER
,
2880 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
2881 #if HARD_FRAME_POINTER_IS_ARG_POINTER
2882 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
2887 GR_VIRTUAL_INCOMING_ARGS
,
2888 GR_VIRTUAL_STACK_ARGS
,
2889 GR_VIRTUAL_STACK_DYNAMIC
,
2890 GR_VIRTUAL_OUTGOING_ARGS
,
2892 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
2897 /* Target-dependent globals. */
2898 struct GTY(()) target_rtl
{
2899 /* All references to the hard registers in global_rtl_index go through
2900 these unique rtl objects. On machines where the frame-pointer and
2901 arg-pointer are the same register, they use the same unique object.
2903 After register allocation, other rtl objects which used to be pseudo-regs
2904 may be clobbered to refer to the frame-pointer register.
2905 But references that were originally to the frame-pointer can be
2906 distinguished from the others because they contain frame_pointer_rtx.
2908 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
2909 tricky: until register elimination has taken place hard_frame_pointer_rtx
2910 should be used if it is being set, and frame_pointer_rtx otherwise. After
2911 register elimination hard_frame_pointer_rtx should always be used.
2912 On machines where the two registers are same (most) then these are the
2914 rtx x_global_rtl
[GR_MAX
];
2916 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
2917 rtx x_pic_offset_table_rtx
;
2919 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
2920 This is used to implement __builtin_return_address for some machines;
2921 see for instance the MIPS port. */
2922 rtx x_return_address_pointer_rtx
;
2924 /* Commonly used RTL for hard registers. These objects are not
2925 necessarily unique, so we allocate them separately from global_rtl.
2926 They are initialized once per compilation unit, then copied into
2927 regno_reg_rtx at the beginning of each function. */
2928 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
2930 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
2931 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
2933 /* Static hunks of RTL used by the aliasing code; these are treated
2934 as persistent to avoid unnecessary RTL allocations. */
2935 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
2937 /* The default memory attributes for each mode. */
2938 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
2940 /* Track if RTL has been initialized. */
2941 bool target_specific_initialized
;
2944 extern GTY(()) struct target_rtl default_target_rtl
;
2945 #if SWITCHABLE_TARGET
2946 extern struct target_rtl
*this_target_rtl
;
2948 #define this_target_rtl (&default_target_rtl)
2951 #define global_rtl \
2952 (this_target_rtl->x_global_rtl)
2953 #define pic_offset_table_rtx \
2954 (this_target_rtl->x_pic_offset_table_rtx)
2955 #define return_address_pointer_rtx \
2956 (this_target_rtl->x_return_address_pointer_rtx)
2957 #define top_of_stack \
2958 (this_target_rtl->x_top_of_stack)
2959 #define mode_mem_attrs \
2960 (this_target_rtl->x_mode_mem_attrs)
2962 /* All references to certain hard regs, except those created
2963 by allocating pseudo regs into them (when that's possible),
2964 go through these unique rtx objects. */
2965 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
2966 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
2967 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
2968 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
2970 #ifndef GENERATOR_FILE
2971 /* Return the attributes of a MEM rtx. */
2972 static inline struct mem_attrs
*
2973 get_mem_attrs (const_rtx x
)
2975 struct mem_attrs
*attrs
;
2977 attrs
= MEM_ATTRS (x
);
2979 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
2984 /* Include the RTL generation functions. */
2986 #ifndef GENERATOR_FILE
2988 #undef gen_rtx_ASM_INPUT
2989 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
2990 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
2991 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
2992 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
2995 /* There are some RTL codes that require special attention; the
2996 generation functions included above do the raw handling. If you
2997 add to this list, modify special_rtx in gengenrtl.c as well. */
2999 extern rtx_insn_list
*gen_rtx_INSN_LIST (enum machine_mode
, rtx
, rtx
);
3000 extern rtx
gen_rtx_CONST_INT (enum machine_mode
, HOST_WIDE_INT
);
3001 extern rtx
gen_rtx_CONST_VECTOR (enum machine_mode
, rtvec
);
3002 extern rtx
gen_raw_REG (enum machine_mode
, int);
3003 extern rtx
gen_rtx_REG (enum machine_mode
, unsigned);
3004 extern rtx
gen_rtx_SUBREG (enum machine_mode
, rtx
, int);
3005 extern rtx
gen_rtx_MEM (enum machine_mode
, rtx
);
3006 extern rtx
gen_rtx_VAR_LOCATION (enum machine_mode
, tree
, rtx
,
3007 enum var_init_status
);
3009 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3011 /* Virtual registers are used during RTL generation to refer to locations into
3012 the stack frame when the actual location isn't known until RTL generation
3013 is complete. The routine instantiate_virtual_regs replaces these with
3014 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3017 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3019 /* This points to the first word of the incoming arguments passed on the stack,
3020 either by the caller or by the callee when pretending it was passed by the
3023 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3025 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3027 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3028 variable on the stack. Otherwise, it points to the first variable on
3031 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3033 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3035 /* This points to the location of dynamically-allocated memory on the stack
3036 immediately after the stack pointer has been adjusted by the amount
3039 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3041 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3043 /* This points to the location in the stack at which outgoing arguments should
3044 be written when the stack is pre-pushed (arguments pushed using push
3045 insns always use sp). */
3047 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3049 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3051 /* This points to the Canonical Frame Address of the function. This
3052 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3053 but is calculated relative to the arg pointer for simplicity; the
3054 frame pointer nor stack pointer are necessarily fixed relative to
3055 the CFA until after reload. */
3057 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3059 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3061 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3063 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3066 #define virtual_preferred_stack_boundary_rtx \
3067 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3069 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3070 ((FIRST_VIRTUAL_REGISTER) + 5)
3072 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3074 /* Nonzero if REGNUM is a pointer into the stack frame. */
3075 #define REGNO_PTR_FRAME_P(REGNUM) \
3076 ((REGNUM) == STACK_POINTER_REGNUM \
3077 || (REGNUM) == FRAME_POINTER_REGNUM \
3078 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3079 || (REGNUM) == ARG_POINTER_REGNUM \
3080 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3081 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3083 /* REGNUM never really appearing in the INSN stream. */
3084 #define INVALID_REGNUM (~(unsigned int) 0)
3086 /* REGNUM for which no debug information can be generated. */
3087 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3089 extern rtx
output_constant_def (tree
, int);
3090 extern rtx
lookup_constant_def (tree
);
3092 /* Nonzero after end of reload pass.
3093 Set to 1 or 0 by reload1.c. */
3095 extern int reload_completed
;
3097 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3098 extern int epilogue_completed
;
3100 /* Set to 1 while reload_as_needed is operating.
3101 Required by some machines to handle any generated moves differently. */
3103 extern int reload_in_progress
;
3105 /* Set to 1 while in lra. */
3106 extern int lra_in_progress
;
3108 /* This macro indicates whether you may create a new
3111 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3114 /* Nonzero after end of regstack pass.
3115 Set to 1 or 0 by reg-stack.c. */
3116 extern int regstack_completed
;
3119 /* If this is nonzero, we do not bother generating VOLATILE
3120 around volatile memory references, and we are willing to
3121 output indirect addresses. If cse is to follow, we reject
3122 indirect addresses so a useful potential cse is generated;
3123 if it is used only once, instruction combination will produce
3124 the same indirect address eventually. */
3125 extern int cse_not_expected
;
3127 /* Translates rtx code to tree code, for those codes needed by
3128 REAL_ARITHMETIC. The function returns an int because the caller may not
3129 know what `enum tree_code' means. */
3131 extern int rtx_to_tree_code (enum rtx_code
);
3134 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3135 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3136 extern unsigned hash_rtx (const_rtx x
, enum machine_mode
, int *, int *, bool);
3139 extern bool check_for_inc_dec (rtx_insn
*insn
);
3142 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3143 extern bool jump_to_label_p (rtx
);
3144 extern int condjump_p (const_rtx
);
3145 extern int any_condjump_p (const_rtx
);
3146 extern int any_uncondjump_p (const_rtx
);
3147 extern rtx
pc_set (const_rtx
);
3148 extern rtx
condjump_label (const_rtx
);
3149 extern int simplejump_p (const_rtx
);
3150 extern int returnjump_p (rtx
);
3151 extern int eh_returnjump_p (rtx
);
3152 extern int onlyjump_p (const_rtx
);
3153 extern int only_sets_cc0_p (const_rtx
);
3154 extern int sets_cc0_p (const_rtx
);
3155 extern int invert_jump_1 (rtx
, rtx
);
3156 extern int invert_jump (rtx
, rtx
, int);
3157 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3158 extern int true_regnum (const_rtx
);
3159 extern unsigned int reg_or_subregno (const_rtx
);
3160 extern int redirect_jump_1 (rtx
, rtx
);
3161 extern void redirect_jump_2 (rtx
, rtx
, rtx
, int, int);
3162 extern int redirect_jump (rtx
, rtx
, int);
3163 extern void rebuild_jump_labels (rtx_insn
*);
3164 extern void rebuild_jump_labels_chain (rtx_insn
*);
3165 extern rtx
reversed_comparison (const_rtx
, enum machine_mode
);
3166 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
3167 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3168 const_rtx
, const_rtx
);
3169 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3170 extern int condjump_in_parallel_p (const_rtx
);
3172 /* In emit-rtl.c. */
3173 extern int max_reg_num (void);
3174 extern int max_label_num (void);
3175 extern int get_first_label_num (void);
3176 extern void maybe_set_first_label_num (rtx
);
3177 extern void delete_insns_since (rtx_insn
*);
3178 extern void mark_reg_pointer (rtx
, int);
3179 extern void mark_user_reg (rtx
);
3180 extern void reset_used_flags (rtx
);
3181 extern void set_used_flags (rtx
);
3182 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3183 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3184 extern int get_max_insn_count (void);
3185 extern int in_sequence_p (void);
3186 extern void init_emit (void);
3187 extern void init_emit_regs (void);
3188 extern void init_derived_machine_modes (void);
3189 extern void init_emit_once (void);
3190 extern void push_topmost_sequence (void);
3191 extern void pop_topmost_sequence (void);
3192 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3193 extern unsigned int unshare_all_rtl (void);
3194 extern void unshare_all_rtl_again (rtx_insn
*);
3195 extern void unshare_all_rtl_in_chain (rtx
);
3196 extern void verify_rtl_sharing (void);
3197 extern void add_insn (rtx_insn
*);
3198 extern void add_insn_before (rtx
, rtx
, basic_block
);
3199 extern void add_insn_after (rtx
, rtx
, basic_block
);
3200 extern void remove_insn (rtx
);
3201 extern rtx_insn
*emit (rtx
);
3202 extern void delete_insn (rtx
);
3203 extern rtx_insn
*entry_of_function (void);
3204 extern void emit_insn_at_entry (rtx
);
3205 extern void delete_insn_chain (rtx
, rtx
, bool);
3206 extern rtx_insn
*unlink_insn_chain (rtx_insn
*, rtx_insn
*);
3207 extern void delete_insn_and_edges (rtx_insn
*);
3208 extern rtx
gen_lowpart_SUBREG (enum machine_mode
, rtx
);
3209 extern rtx
gen_const_mem (enum machine_mode
, rtx
);
3210 extern rtx
gen_frame_mem (enum machine_mode
, rtx
);
3211 extern rtx
gen_tmp_stack_mem (enum machine_mode
, rtx
);
3212 extern bool validate_subreg (enum machine_mode
, enum machine_mode
,
3213 const_rtx
, unsigned int);
3216 extern unsigned int extended_count (const_rtx
, enum machine_mode
, int);
3217 extern rtx
remove_death (unsigned int, rtx_insn
*);
3218 extern void dump_combine_stats (FILE *);
3219 extern void dump_combine_total_stats (FILE *);
3220 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3222 /* In cfgcleanup.c */
3223 extern void delete_dead_jumptables (void);
3225 /* In sched-rgn.c. */
3226 extern void schedule_insns (void);
3228 /* In sched-ebb.c. */
3229 extern void schedule_ebbs (void);
3231 /* In sel-sched-dump.c. */
3232 extern void sel_sched_fix_param (const char *param
, const char *val
);
3234 /* In print-rtl.c */
3235 extern const char *print_rtx_head
;
3236 extern void debug (const rtx_def
&ref
);
3237 extern void debug (const rtx_def
*ptr
);
3238 extern void debug_rtx (const_rtx
);
3239 extern void debug_rtx_list (const rtx_insn
*, int);
3240 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3241 extern const_rtx
debug_rtx_find (const rtx_insn
*, int);
3242 extern void print_mem_expr (FILE *, const_tree
);
3243 extern void print_rtl (FILE *, const_rtx
);
3244 extern void print_simple_rtl (FILE *, const_rtx
);
3245 extern int print_rtl_single (FILE *, const_rtx
);
3246 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3247 extern void print_inline_rtx (FILE *, const_rtx
, int);
3249 /* Functions in sched-vis.c. FIXME: Ideally these functions would
3250 not be in sched-vis.c but in rtl.c, because they are not only used
3251 by the scheduler anymore but for all "slim" RTL dumping. */
3252 extern void dump_value_slim (FILE *, const_rtx
, int);
3253 extern void dump_insn_slim (FILE *, const_rtx
);
3254 extern void dump_rtl_slim (FILE *, const_rtx
, const_rtx
, int, int);
3255 extern void print_value (pretty_printer
*, const_rtx
, int);
3256 extern void print_pattern (pretty_printer
*, const_rtx
, int);
3257 extern void print_insn (pretty_printer
*, const_rtx
, int);
3258 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
3259 extern const char *str_pattern_slim (const_rtx
);
3262 extern void reposition_prologue_and_epilogue_notes (void);
3263 extern int prologue_epilogue_contains (const_rtx
);
3264 extern int sibcall_epilogue_contains (const_rtx
);
3265 extern void update_temp_slot_address (rtx
, rtx
);
3266 extern void maybe_copy_prologue_epilogue_insn (rtx
, rtx
);
3267 extern void set_return_jump_label (rtx
);
3270 extern void expand_null_return (void);
3271 extern void expand_naked_return (void);
3272 extern void emit_jump (rtx
);
3275 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3277 extern HOST_WIDE_INT
find_args_size_adjust (rtx
);
3278 extern int fixup_args_size_notes (rtx
, rtx
, int);
3281 extern void print_rtl_with_bb (FILE *, const rtx_insn
*, int);
3282 extern rtx_insn
*duplicate_insn_chain (rtx_insn
*, rtx_insn
*);
3285 extern void init_expmed (void);
3286 extern void expand_inc (rtx
, rtx
);
3287 extern void expand_dec (rtx
, rtx
);
3289 /* In lower-subreg.c */
3290 extern void init_lower_subreg (void);
3293 extern bool can_copy_p (enum machine_mode
);
3294 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
3295 extern rtx
fis_get_condition (rtx_insn
*);
3299 extern HARD_REG_SET eliminable_regset
;
3301 extern void mark_elimination (int, int);
3304 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3305 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3306 extern void globalize_reg (tree
, int);
3307 extern void init_reg_modes_target (void);
3308 extern void init_regs (void);
3309 extern void reinit_regs (void);
3310 extern void init_fake_stack_mems (void);
3311 extern void save_register_info (void);
3312 extern void init_reg_sets (void);
3313 extern void regclass (rtx
, int);
3314 extern void reg_scan (rtx_insn
*, unsigned int);
3315 extern void fix_register (const char *, int, int);
3316 extern bool invalid_mode_change_p (unsigned int, enum reg_class
);
3319 extern int function_invariant_p (const_rtx
);
3329 LCT_RETURNS_TWICE
= 5
3332 extern void emit_library_call (rtx
, enum libcall_type
, enum machine_mode
, int,
3334 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
3335 enum machine_mode
, int, ...);
3338 extern void init_varasm_once (void);
3340 extern rtx
make_debug_expr_from_rtl (const_rtx
);
3343 extern bool read_rtx (const char *, rtx
*);
3346 extern rtx
canon_rtx (rtx
);
3347 extern int true_dependence (const_rtx
, enum machine_mode
, const_rtx
);
3348 extern rtx
get_addr (rtx
);
3349 extern int canon_true_dependence (const_rtx
, enum machine_mode
, rtx
,
3351 extern int read_dependence (const_rtx
, const_rtx
);
3352 extern int anti_dependence (const_rtx
, const_rtx
);
3353 extern int canon_anti_dependence (const_rtx
, bool,
3354 const_rtx
, enum machine_mode
, rtx
);
3355 extern int output_dependence (const_rtx
, const_rtx
);
3356 extern int may_alias_p (const_rtx
, const_rtx
);
3357 extern void init_alias_target (void);
3358 extern void init_alias_analysis (void);
3359 extern void end_alias_analysis (void);
3360 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
3361 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
3362 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
3363 extern bool may_be_sp_based_p (rtx
);
3364 extern rtx
gen_hard_reg_clobber (enum machine_mode
, unsigned int);
3365 extern rtx
get_reg_known_value (unsigned int);
3366 extern bool get_reg_known_equiv_p (unsigned int);
3367 extern rtx
get_reg_base_value (unsigned int);
3370 extern int stack_regs_mentioned (const_rtx insn
);
3374 extern GTY(()) rtx stack_limit_rtx
;
3377 extern void invert_br_probabilities (rtx
);
3378 extern bool expensive_function_p (int);
3380 /* In var-tracking.c */
3381 extern unsigned int variable_tracking_main (void);
3383 /* In stor-layout.c. */
3384 extern void get_mode_bounds (enum machine_mode
, int, enum machine_mode
,
3388 extern rtx
canon_condition (rtx
);
3389 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
3392 extern unsigned int compute_alignments (void);
3393 extern void update_alignments (vec
<rtx
> &);
3394 extern int asm_str_count (const char *templ
);
3398 rtx (*gen_lowpart
) (enum machine_mode
, rtx
);
3399 rtx (*gen_lowpart_no_emit
) (enum machine_mode
, rtx
);
3400 rtx (*reg_nonzero_bits
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
3401 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
3402 rtx (*reg_num_sign_bit_copies
) (const_rtx
, enum machine_mode
, const_rtx
, enum machine_mode
,
3403 unsigned int, unsigned int *);
3404 bool (*reg_truncated_to_mode
) (enum machine_mode
, const_rtx
);
3406 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3409 /* Each pass can provide its own. */
3410 extern struct rtl_hooks rtl_hooks
;
3412 /* ... but then it has to restore these. */
3413 extern const struct rtl_hooks general_rtl_hooks
;
3415 /* Keep this for the nonce. */
3416 #define gen_lowpart rtl_hooks.gen_lowpart
3418 extern void insn_locations_init (void);
3419 extern void insn_locations_finalize (void);
3420 extern void set_curr_insn_location (location_t
);
3421 extern location_t
curr_insn_location (void);
3422 extern bool optimize_insn_for_size_p (void);
3423 extern bool optimize_insn_for_speed_p (void);
3426 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
3428 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
3431 #define fatal_insn(msgid, insn) \
3432 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3433 #define fatal_insn_not_found(insn) \
3434 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3437 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
3440 #endif /* ! GCC_RTL_H */