1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
23 /* This file is occasionally included by generator files which expect
24 machmode.h and other files to exist and would not normally have been
25 included by coretypes.h. */
30 #include "double-int.h"
32 #include "fixed-value.h"
33 #endif /* GENERATOR_FILE */
35 #include "statistics.h"
43 /* Value used by some passes to "recognize" noop moves as valid
45 #define NOOP_MOVE_INSN_CODE INT_MAX
47 /* Register Transfer Language EXPRESSIONS CODES */
49 #define RTX_CODE enum rtx_code
52 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
53 #include "rtl.def" /* rtl expressions are documented here */
56 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
58 Assumes default enum value assignment. */
60 /* The cast here, saves many elsewhere. */
61 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
63 /* Similar, but since generator files get more entries... */
65 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
68 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
71 /* We check bit 0-1 of some rtx class codes in the predicates below. */
73 /* Bit 0 = comparison if 0, arithmetic is 1
74 Bit 1 = 1 if commutative. */
80 /* Must follow the four preceding values. */
87 /* Bit 0 = 1 if constant. */
96 #define RTX_OBJ_MASK (~1)
97 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
98 #define RTX_COMPARE_MASK (~1)
99 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
100 #define RTX_ARITHMETIC_MASK (~1)
101 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
102 #define RTX_BINARY_MASK (~3)
103 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
104 #define RTX_COMMUTATIVE_MASK (~2)
105 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
106 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
108 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
109 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
111 extern const char * const rtx_name
[NUM_RTX_CODE
];
112 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
114 extern const char * const rtx_format
[NUM_RTX_CODE
];
115 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
117 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
118 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
120 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
121 and NEXT_INSN fields). */
122 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
124 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
125 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
127 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
128 relative to which the offsets are calculated, as explained in rtl.def. */
129 struct addr_diff_vec_flags
131 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
132 unsigned min_align
: 8;
134 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
135 unsigned min_after_vec
: 1; /* minimum address target label is
136 after the ADDR_DIFF_VEC. */
137 unsigned max_after_vec
: 1; /* maximum address target label is
138 after the ADDR_DIFF_VEC. */
139 unsigned min_after_base
: 1; /* minimum address target label is
141 unsigned max_after_base
: 1; /* maximum address target label is
143 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
144 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
149 /* Structure used to describe the attributes of a MEM. These are hashed
150 so MEMs that the same attributes share a data structure. This means
151 they cannot be modified in place. */
152 struct GTY(()) mem_attrs
154 /* The expression that the MEM accesses, or null if not known.
155 This expression might be larger than the memory reference itself.
156 (In other words, the MEM might access only part of the object.) */
159 /* The offset of the memory reference from the start of EXPR.
160 Only valid if OFFSET_KNOWN_P. */
161 HOST_WIDE_INT offset
;
163 /* The size of the memory reference in bytes. Only valid if
167 /* The alias set of the memory reference. */
168 alias_set_type alias
;
170 /* The alignment of the reference in bits. Always a multiple of
171 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
172 than the memory reference itself. */
175 /* The address space that the memory reference uses. */
176 unsigned char addrspace
;
178 /* True if OFFSET is known. */
181 /* True if SIZE is known. */
185 /* Structure used to describe the attributes of a REG in similar way as
186 mem_attrs does for MEM above. Note that the OFFSET field is calculated
187 in the same way as for mem_attrs, rather than in the same way as a
188 SUBREG_BYTE. For example, if a big-endian target stores a byte
189 object in the low part of a 4-byte register, the OFFSET field
190 will be -3 rather than 0. */
192 struct GTY((for_user
)) reg_attrs
{
193 tree decl
; /* decl corresponding to REG. */
194 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
197 /* Common union for an element of an rtx. */
202 unsigned int rt_uint
;
206 machine_mode rt_type
;
207 addr_diff_vec_flags rt_addr_diff_vec_flags
;
208 struct cselib_val
*rt_cselib
;
212 struct constant_descriptor_rtx
*rt_constant
;
213 struct dw_cfi_node
*rt_cfi
;
216 /* Describes the properties of a REG. */
217 struct GTY(()) reg_info
{
218 /* The value of REGNO. */
221 /* The value of REG_NREGS. */
222 unsigned int nregs
: 8;
223 unsigned int unused
: 24;
225 /* The value of REG_ATTRS. */
229 /* This structure remembers the position of a SYMBOL_REF within an
230 object_block structure. A SYMBOL_REF only provides this information
231 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
232 struct GTY(()) block_symbol
{
233 /* The usual SYMBOL_REF fields. */
234 rtunion
GTY ((skip
)) fld
[2];
236 /* The block that contains this object. */
237 struct object_block
*block
;
239 /* The offset of this object from the start of its block. It is negative
240 if the symbol has not yet been assigned an offset. */
241 HOST_WIDE_INT offset
;
244 /* Describes a group of objects that are to be placed together in such
245 a way that their relative positions are known. */
246 struct GTY((for_user
)) object_block
{
247 /* The section in which these objects should be placed. */
250 /* The alignment of the first object, measured in bits. */
251 unsigned int alignment
;
253 /* The total size of the objects, measured in bytes. */
256 /* The SYMBOL_REFs for each object. The vector is sorted in
257 order of increasing offset and the following conditions will
258 hold for each element X:
260 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
261 !SYMBOL_REF_ANCHOR_P (X)
262 SYMBOL_REF_BLOCK (X) == [address of this structure]
263 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
264 vec
<rtx
, va_gc
> *objects
;
266 /* All the anchor SYMBOL_REFs used to address these objects, sorted
267 in order of increasing offset, and then increasing TLS model.
268 The following conditions will hold for each element X in this vector:
270 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
271 SYMBOL_REF_ANCHOR_P (X)
272 SYMBOL_REF_BLOCK (X) == [address of this structure]
273 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
274 vec
<rtx
, va_gc
> *anchors
;
277 struct GTY((variable_size
)) hwivec_def
{
278 HOST_WIDE_INT elem
[1];
281 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
282 #define CWI_GET_NUM_ELEM(RTX) \
283 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
284 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
285 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
287 /* RTL expression ("rtx"). */
289 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
290 field for for gengtype to recognize that inheritance is occurring,
291 so that all subclasses are redirected to the traversal hook for the
293 However, all of the fields are in the base class, and special-casing
294 is at work. Hence we use desc and tag of 0, generating a switch
295 statement of the form:
298 case 0: // all the work happens here
300 in order to work with the existing special-casing in gengtype. */
302 struct GTY((desc("0"), tag("0"),
303 chain_next ("RTX_NEXT (&%h)"),
304 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
305 /* The kind of expression this is. */
306 ENUM_BITFIELD(rtx_code
) code
: 16;
308 /* The kind of value the expression has. */
309 ENUM_BITFIELD(machine_mode
) mode
: 8;
311 /* 1 in a MEM if we should keep the alias set for this mem unchanged
312 when we access a component.
313 1 in a JUMP_INSN if it is a crossing jump.
314 1 in a CALL_INSN if it is a sibling call.
315 1 in a SET that is for a return.
316 In a CODE_LABEL, part of the two-bit alternate entry field.
317 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
318 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
319 1 in a SUBREG generated by LRA for reload insns.
320 1 in a CALL for calls instrumented by Pointer Bounds Checker. */
321 unsigned int jump
: 1;
322 /* In a CODE_LABEL, part of the two-bit alternate entry field.
323 1 in a MEM if it cannot trap.
324 1 in a CALL_INSN logically equivalent to
325 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
326 unsigned int call
: 1;
327 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
328 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
329 1 in a SYMBOL_REF if it addresses something in the per-function
331 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
332 1 in a NOTE, or EXPR_LIST for a const call.
333 1 in a JUMP_INSN of an annulling branch.
334 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
335 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
336 1 in a clobber temporarily created for LRA. */
337 unsigned int unchanging
: 1;
338 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
339 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
340 if it has been deleted.
341 1 in a REG expression if corresponds to a variable declared by the user,
342 0 for an internally generated temporary.
343 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
344 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
346 In a SYMBOL_REF, this flag is used for machine-specific purposes.
347 In a PREFETCH, this flag indicates that it should be considered a scheduling
349 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
350 unsigned int volatil
: 1;
351 /* 1 in a REG if the register is used only in exit code a loop.
352 1 in a SUBREG expression if was generated from a variable with a
354 1 in a CODE_LABEL if the label is used for nonlocal gotos
355 and must not be deleted even if its count is zero.
356 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
357 together with the preceding insn. Valid only within sched.
358 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
359 from the target of a branch. Valid from reorg until end of compilation;
362 The name of the field is historical. It used to be used in MEMs
363 to record whether the MEM accessed part of a structure. */
364 unsigned int in_struct
: 1;
365 /* At the end of RTL generation, 1 if this rtx is used. This is used for
366 copying shared structure. See `unshare_all_rtl'.
367 In a REG, this is not needed for that purpose, and used instead
368 in `leaf_renumber_regs_insn'.
369 1 in a SYMBOL_REF, means that emit_library_call
370 has used it as the function.
371 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
372 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
373 unsigned int used
: 1;
374 /* 1 in an INSN or a SET if this rtx is related to the call frame,
375 either changing how we compute the frame address or saving and
376 restoring registers in the prologue and epilogue.
377 1 in a REG or MEM if it is a pointer.
378 1 in a SYMBOL_REF if it addresses something in the per-function
379 constant string pool.
380 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
381 unsigned frame_related
: 1;
382 /* 1 in a REG or PARALLEL that is the current function's return value.
383 1 in a SYMBOL_REF for a weak symbol.
384 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
385 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
386 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
387 unsigned return_val
: 1;
390 /* The final union field is aligned to 64 bits on LP64 hosts,
391 giving a 32-bit gap after the fields above. We optimize the
392 layout for that case and use the gap for extra code-specific
395 /* The ORIGINAL_REGNO of a REG. */
396 unsigned int original_regno
;
398 /* The INSN_UID of an RTX_INSN-class code. */
401 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
402 unsigned int symbol_ref_flags
;
404 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
405 enum var_init_status var_location_status
;
407 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
408 HOST_WIDE_INTs in the hwivec_def. */
409 unsigned int num_elem
;
412 /* The first element of the operands of this rtx.
413 The number of operands and their types are controlled
414 by the `code' field, according to rtl.def. */
417 HOST_WIDE_INT hwint
[1];
419 struct block_symbol block_sym
;
420 struct real_value rv
;
421 struct fixed_value fv
;
422 struct hwivec_def hwiv
;
423 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
426 /* A node for constructing singly-linked lists of rtx. */
428 class GTY(()) rtx_expr_list
: public rtx_def
430 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
433 /* Get next in list. */
434 rtx_expr_list
*next () const;
436 /* Get at the underlying rtx. */
437 rtx
element () const;
443 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
445 return rt
->code
== EXPR_LIST
;
448 class GTY(()) rtx_insn_list
: public rtx_def
450 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
452 This is an instance of:
454 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
456 i.e. a node for constructing singly-linked lists of rtx_insn *, where
457 the list is "external" to the insn (as opposed to the doubly-linked
458 list embedded within rtx_insn itself). */
461 /* Get next in list. */
462 rtx_insn_list
*next () const;
464 /* Get at the underlying instruction. */
465 rtx_insn
*insn () const;
472 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
474 return rt
->code
== INSN_LIST
;
477 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
478 typically (but not always) of rtx_insn *, used in the late passes. */
480 class GTY(()) rtx_sequence
: public rtx_def
482 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
485 /* Get number of elements in sequence. */
488 /* Get i-th element of the sequence. */
489 rtx
element (int index
) const;
491 /* Get i-th element of the sequence, with a checked cast to
493 rtx_insn
*insn (int index
) const;
499 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
501 return rt
->code
== SEQUENCE
;
507 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
509 return rt
->code
== SEQUENCE
;
512 class GTY(()) rtx_insn
: public rtx_def
515 /* No extra fields, but adds the invariant:
519 || JUMP_TABLE_DATA_P (X)
523 i.e. that we must be able to use the following:
527 i.e. we have an rtx that has an INSN_UID field and can be part of
528 a linked list of insns.
531 /* Returns true if this insn has been deleted. */
533 bool deleted () const { return volatil
; }
535 /* Mark this insn as deleted. */
537 void set_deleted () { volatil
= true; }
539 /* Mark this insn as not deleted. */
541 void set_undeleted () { volatil
= false; }
544 /* Subclasses of rtx_insn. */
546 class GTY(()) rtx_debug_insn
: public rtx_insn
548 /* No extra fields, but adds the invariant:
549 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
550 i.e. an annotation for tracking variable assignments.
552 This is an instance of:
553 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
557 class GTY(()) rtx_nonjump_insn
: public rtx_insn
559 /* No extra fields, but adds the invariant:
560 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
561 i.e an instruction that cannot jump.
563 This is an instance of:
564 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
568 class GTY(()) rtx_jump_insn
: public rtx_insn
571 /* No extra fields, but adds the invariant:
572 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
573 i.e. an instruction that can possibly jump.
575 This is an instance of:
576 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
579 /* Returns jump target of this instruction. The returned value is not
580 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
581 expression. Also, when the code label is marked "deleted", it is
582 replaced by a NOTE. In some cases the value is NULL_RTX. */
584 inline rtx
jump_label () const;
586 /* Returns jump target cast to rtx_code_label *. */
588 inline rtx_code_label
*jump_target () const;
590 /* Set jump target. */
592 inline void set_jump_target (rtx_code_label
*);
595 class GTY(()) rtx_call_insn
: public rtx_insn
597 /* No extra fields, but adds the invariant:
598 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
599 i.e. an instruction that can possibly call a subroutine
600 but which will not change which instruction comes next
601 in the current function.
603 This is an instance of:
604 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
608 class GTY(()) rtx_jump_table_data
: public rtx_insn
610 /* No extra fields, but adds the invariant:
611 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
612 i.e. a data for a jump table, considered an instruction for
615 This is an instance of:
616 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
621 /* This can be either:
623 (a) a table of absolute jumps, in which case PATTERN (this) is an
624 ADDR_VEC with arg 0 a vector of labels, or
626 (b) a table of relative jumps (e.g. for -fPIC), in which case
627 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
628 arg 1 the vector of labels.
630 This method gets the underlying vec. */
632 inline rtvec
get_labels () const;
635 class GTY(()) rtx_barrier
: public rtx_insn
637 /* No extra fields, but adds the invariant:
638 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
639 i.e. a marker that indicates that control will not flow through.
641 This is an instance of:
642 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
646 class GTY(()) rtx_code_label
: public rtx_insn
648 /* No extra fields, but adds the invariant:
649 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
650 i.e. a label in the assembler.
652 This is an instance of:
653 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
657 class GTY(()) rtx_note
: public rtx_insn
659 /* No extra fields, but adds the invariant:
660 NOTE_P(X) aka (GET_CODE (X) == NOTE)
661 i.e. a note about the corresponding source code.
663 This is an instance of:
664 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
668 /* The size in bytes of an rtx header (code, mode and flags). */
669 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
671 /* The size in bytes of an rtx with code CODE. */
672 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
674 #define NULL_RTX (rtx) 0
676 /* The "next" and "previous" RTX, relative to this one. */
678 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
679 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
681 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
683 #define RTX_PREV(X) ((INSN_P (X) \
685 || JUMP_TABLE_DATA_P (X) \
688 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
689 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
690 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
692 /* Define macros to access the `code' field of the rtx. */
694 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
695 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
697 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
698 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
700 /* RTL vector. These appear inside RTX's when there is a need
701 for a variable number of things. The principle use is inside
702 PARALLEL expressions. */
704 struct GTY(()) rtvec_def
{
705 int num_elem
; /* number of elements */
706 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
709 #define NULL_RTVEC (rtvec) 0
711 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
712 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
714 /* Predicate yielding nonzero iff X is an rtx for a register. */
715 #define REG_P(X) (GET_CODE (X) == REG)
717 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
718 #define MEM_P(X) (GET_CODE (X) == MEM)
720 #if TARGET_SUPPORTS_WIDE_INT
722 /* Match CONST_*s that can represent compile-time constant integers. */
723 #define CASE_CONST_SCALAR_INT \
727 /* Match CONST_*s for which pointer equality corresponds to value
729 #define CASE_CONST_UNIQUE \
731 case CONST_WIDE_INT: \
735 /* Match all CONST_* rtxes. */
736 #define CASE_CONST_ANY \
738 case CONST_WIDE_INT: \
745 /* Match CONST_*s that can represent compile-time constant integers. */
746 #define CASE_CONST_SCALAR_INT \
750 /* Match CONST_*s for which pointer equality corresponds to value
752 #define CASE_CONST_UNIQUE \
757 /* Match all CONST_* rtxes. */
758 #define CASE_CONST_ANY \
765 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
766 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
768 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
769 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
771 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
772 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
774 /* Predicate yielding true iff X is an rtx for a double-int
775 or floating point constant. */
776 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
778 /* Predicate yielding true iff X is an rtx for a double-int. */
779 #define CONST_DOUBLE_AS_INT_P(X) \
780 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
782 /* Predicate yielding true iff X is an rtx for a integer const. */
783 #if TARGET_SUPPORTS_WIDE_INT
784 #define CONST_SCALAR_INT_P(X) \
785 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
787 #define CONST_SCALAR_INT_P(X) \
788 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
791 /* Predicate yielding true iff X is an rtx for a double-int. */
792 #define CONST_DOUBLE_AS_FLOAT_P(X) \
793 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
795 /* Predicate yielding nonzero iff X is a label insn. */
796 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
798 /* Predicate yielding nonzero iff X is a jump insn. */
799 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
801 /* Predicate yielding nonzero iff X is a call insn. */
802 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
804 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
805 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
807 /* Predicate yielding nonzero iff X is a debug note/insn. */
808 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
810 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
811 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
813 /* Nonzero if DEBUG_INSN_P may possibly hold. */
814 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
816 /* Predicate yielding nonzero iff X is a real insn. */
818 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
820 /* Predicate yielding nonzero iff X is a note insn. */
821 #define NOTE_P(X) (GET_CODE (X) == NOTE)
823 /* Predicate yielding nonzero iff X is a barrier insn. */
824 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
826 /* Predicate yielding nonzero iff X is a data for a jump table. */
827 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
829 /* Predicate yielding nonzero iff RTX is a subreg. */
830 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
835 is_a_helper
<rtx_insn
*>::test (rtx rt
)
839 || JUMP_TABLE_DATA_P (rt
)
847 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
851 || JUMP_TABLE_DATA_P (rt
)
859 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
861 return DEBUG_INSN_P (rt
);
867 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
869 return NONJUMP_INSN_P (rt
);
875 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
883 is_a_helper
<rtx_jump_insn
*>::test (rtx_insn
*insn
)
885 return JUMP_P (insn
);
891 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
899 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
901 return CALL_P (insn
);
907 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
909 return JUMP_TABLE_DATA_P (rt
);
915 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
917 return JUMP_TABLE_DATA_P (insn
);
923 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
925 return BARRIER_P (rt
);
931 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
939 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
941 return LABEL_P (insn
);
947 is_a_helper
<rtx_note
*>::test (rtx rt
)
955 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
957 return NOTE_P (insn
);
960 /* Predicate yielding nonzero iff X is a return or simple_return. */
961 #define ANY_RETURN_P(X) \
962 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
964 /* 1 if X is a unary operator. */
967 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
969 /* 1 if X is a binary operator. */
971 #define BINARY_P(X) \
972 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
974 /* 1 if X is an arithmetic operator. */
976 #define ARITHMETIC_P(X) \
977 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
978 == RTX_ARITHMETIC_RESULT)
980 /* 1 if X is an arithmetic operator. */
982 #define COMMUTATIVE_ARITH_P(X) \
983 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
985 /* 1 if X is a commutative arithmetic operator or a comparison operator.
986 These two are sometimes selected together because it is possible to
987 swap the two operands. */
989 #define SWAPPABLE_OPERANDS_P(X) \
990 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
991 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
992 | (1 << RTX_COMPARE)))
994 /* 1 if X is a non-commutative operator. */
996 #define NON_COMMUTATIVE_P(X) \
997 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
998 == RTX_NON_COMMUTATIVE_RESULT)
1000 /* 1 if X is a commutative operator on integers. */
1002 #define COMMUTATIVE_P(X) \
1003 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1004 == RTX_COMMUTATIVE_RESULT)
1006 /* 1 if X is a relational operator. */
1008 #define COMPARISON_P(X) \
1009 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1011 /* 1 if X is a constant value that is an integer. */
1013 #define CONSTANT_P(X) \
1014 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1016 /* 1 if X can be used to represent an object. */
1017 #define OBJECT_P(X) \
1018 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1020 /* General accessor macros for accessing the fields of an rtx. */
1022 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1023 /* The bit with a star outside the statement expr and an & inside is
1024 so that N can be evaluated only once. */
1025 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1026 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1027 const enum rtx_code _code = GET_CODE (_rtx); \
1028 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1029 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1031 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1032 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1034 &_rtx->u.fld[_n]; }))
1036 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1037 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1038 const enum rtx_code _code = GET_CODE (_rtx); \
1039 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1040 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1042 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1043 && GET_RTX_FORMAT (_code)[_n] != C2) \
1044 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1046 &_rtx->u.fld[_n]; }))
1048 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1049 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1050 if (GET_CODE (_rtx) != (C)) \
1051 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1053 &_rtx->u.fld[_n]; }))
1055 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1056 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1057 const enum rtx_code _code = GET_CODE (_rtx); \
1058 if (_code != (C1) && _code != (C2)) \
1059 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1061 &_rtx->u.fld[_n]; }))
1063 #define RTVEC_ELT(RTVEC, I) __extension__ \
1064 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1065 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1066 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1068 &_rtvec->elem[_i]; }))
1070 #define XWINT(RTX, N) __extension__ \
1071 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1072 const enum rtx_code _code = GET_CODE (_rtx); \
1073 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1074 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1076 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1077 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1079 &_rtx->u.hwint[_n]; }))
1081 #define CWI_ELT(RTX, I) __extension__ \
1082 (*({ __typeof (RTX) const _cwi = (RTX); \
1083 int _max = CWI_GET_NUM_ELEM (_cwi); \
1084 const int _i = (I); \
1085 if (_i < 0 || _i >= _max) \
1086 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1088 &_cwi->u.hwiv.elem[_i]; }))
1090 #define XCWINT(RTX, N, C) __extension__ \
1091 (*({ __typeof (RTX) const _rtx = (RTX); \
1092 if (GET_CODE (_rtx) != (C)) \
1093 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1095 &_rtx->u.hwint[N]; }))
1097 #define XCMWINT(RTX, N, C, M) __extension__ \
1098 (*({ __typeof (RTX) const _rtx = (RTX); \
1099 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1100 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1101 __LINE__, __FUNCTION__); \
1102 &_rtx->u.hwint[N]; }))
1104 #define XCNMPRV(RTX, C, M) __extension__ \
1105 ({ __typeof (RTX) const _rtx = (RTX); \
1106 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1107 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1108 __LINE__, __FUNCTION__); \
1111 #define XCNMPFV(RTX, C, M) __extension__ \
1112 ({ __typeof (RTX) const _rtx = (RTX); \
1113 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1114 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1115 __LINE__, __FUNCTION__); \
1118 #define REG_CHECK(RTX) __extension__ \
1119 ({ __typeof (RTX) const _rtx = (RTX); \
1120 if (GET_CODE (_rtx) != REG) \
1121 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1125 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1126 ({ __typeof (RTX) const _symbol = (RTX); \
1127 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1128 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1129 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1131 &_symbol->u.block_sym; })
1133 #define HWIVEC_CHECK(RTX,C) __extension__ \
1134 ({ __typeof (RTX) const _symbol = (RTX); \
1135 RTL_CHECKC1 (_symbol, 0, C); \
1136 &_symbol->u.hwiv; })
1138 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1141 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1144 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1147 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1150 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1151 const char *, int, const char *)
1153 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1154 bool, const char *, int, const char *)
1156 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1158 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1161 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1165 #else /* not ENABLE_RTL_CHECKING */
1167 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1168 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1169 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1170 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1171 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1172 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1173 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1174 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1175 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1176 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1177 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1178 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1179 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1180 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1181 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1185 /* General accessor macros for accessing the flags of an rtx. */
1187 /* Access an individual rtx flag, with no checking of any kind. */
1188 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1190 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1191 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1192 ({ __typeof (RTX) const _rtx = (RTX); \
1193 if (GET_CODE (_rtx) != C1) \
1194 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1198 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1199 ({ __typeof (RTX) const _rtx = (RTX); \
1200 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1201 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1205 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1206 ({ __typeof (RTX) const _rtx = (RTX); \
1207 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1208 && GET_CODE (_rtx) != C3) \
1209 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1213 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1214 ({ __typeof (RTX) const _rtx = (RTX); \
1215 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1216 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1217 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1221 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1222 ({ __typeof (RTX) const _rtx = (RTX); \
1223 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1224 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1225 && GET_CODE (_rtx) != C5) \
1226 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1230 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1232 ({ __typeof (RTX) const _rtx = (RTX); \
1233 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1234 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1235 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1236 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1240 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1242 ({ __typeof (RTX) const _rtx = (RTX); \
1243 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1244 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1245 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1246 && GET_CODE (_rtx) != C7) \
1247 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1251 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1253 ({ __typeof (RTX) const _rtx = (RTX); \
1254 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1255 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1259 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1264 #else /* not ENABLE_RTL_FLAG_CHECKING */
1266 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1267 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1268 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1269 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1270 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1271 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1272 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1273 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1276 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1277 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1278 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1279 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1280 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1281 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1282 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1283 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1284 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1285 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1287 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1288 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1290 /* These are like XINT, etc. except that they expect a '0' field instead
1291 of the normal type code. */
1293 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1294 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1295 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1296 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1297 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1298 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1299 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1300 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1301 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1302 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1303 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1304 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1306 /* Access a '0' field with any type. */
1307 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1309 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1310 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1311 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1312 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1313 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1314 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1315 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1316 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1317 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1318 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1320 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1321 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1323 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1326 /* Methods of rtx_expr_list. */
1328 inline rtx_expr_list
*rtx_expr_list::next () const
1330 rtx tmp
= XEXP (this, 1);
1331 return safe_as_a
<rtx_expr_list
*> (tmp
);
1334 inline rtx
rtx_expr_list::element () const
1336 return XEXP (this, 0);
1339 /* Methods of rtx_insn_list. */
1341 inline rtx_insn_list
*rtx_insn_list::next () const
1343 rtx tmp
= XEXP (this, 1);
1344 return safe_as_a
<rtx_insn_list
*> (tmp
);
1347 inline rtx_insn
*rtx_insn_list::insn () const
1349 rtx tmp
= XEXP (this, 0);
1350 return safe_as_a
<rtx_insn
*> (tmp
);
1353 /* Methods of rtx_sequence. */
1355 inline int rtx_sequence::len () const
1357 return XVECLEN (this, 0);
1360 inline rtx
rtx_sequence::element (int index
) const
1362 return XVECEXP (this, 0, index
);
1365 inline rtx_insn
*rtx_sequence::insn (int index
) const
1367 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1370 /* ACCESS MACROS for particular fields of insns. */
1372 /* Holds a unique number for each insn.
1373 These are not necessarily sequentially increasing. */
1374 inline int INSN_UID (const_rtx insn
)
1376 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1377 (insn
))->u2
.insn_uid
;
1379 inline int& INSN_UID (rtx insn
)
1381 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1382 (insn
))->u2
.insn_uid
;
1385 /* Chain insns together in sequence. */
1387 /* For now these are split in two: an rvalue form:
1390 SET_NEXT_INSN/SET_PREV_INSN. */
1392 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1394 rtx prev
= XEXP (insn
, 0);
1395 return safe_as_a
<rtx_insn
*> (prev
);
1398 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1400 return XEXP (insn
, 0);
1403 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1405 rtx next
= XEXP (insn
, 1);
1406 return safe_as_a
<rtx_insn
*> (next
);
1409 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1411 return XEXP (insn
, 1);
1414 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1416 return XBBDEF (insn
, 2);
1419 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1421 return XBBDEF (insn
, 2);
1424 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1426 BLOCK_FOR_INSN (insn
) = bb
;
1429 /* The body of an insn. */
1430 inline rtx
PATTERN (const_rtx insn
)
1432 return XEXP (insn
, 3);
1435 inline rtx
& PATTERN (rtx insn
)
1437 return XEXP (insn
, 3);
1440 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1442 return XUINT (insn
, 4);
1445 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1447 return XUINT (insn
, 4);
1450 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1452 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1455 /* LOCATION of an RTX if relevant. */
1456 #define RTL_LOCATION(X) (INSN_P (X) ? \
1457 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1460 /* Code number of instruction, from when it was recognized.
1461 -1 means this instruction has not been recognized yet. */
1462 #define INSN_CODE(INSN) XINT (INSN, 5)
1464 inline rtvec
rtx_jump_table_data::get_labels () const
1466 rtx pat
= PATTERN (this);
1467 if (GET_CODE (pat
) == ADDR_VEC
)
1468 return XVEC (pat
, 0);
1470 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1473 #define RTX_FRAME_RELATED_P(RTX) \
1474 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1475 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1477 /* 1 if JUMP RTX is a crossing jump. */
1478 #define CROSSING_JUMP_P(RTX) \
1479 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1481 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1483 #define RTL_CONST_CALL_P(RTX) \
1484 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1486 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1488 #define RTL_PURE_CALL_P(RTX) \
1489 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1491 /* 1 if RTX is a call to a const or pure function. */
1492 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1493 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1495 /* 1 if RTX is a call to a looping const or pure function. Built from
1496 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1497 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1498 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1500 /* 1 if RTX is a call_insn for a sibling call. */
1501 #define SIBLING_CALL_P(RTX) \
1502 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1504 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1505 #define INSN_ANNULLED_BRANCH_P(RTX) \
1506 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1508 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1509 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1510 executed if the branch is taken. For annulled branches with this bit
1511 clear, the insn should be executed only if the branch is not taken. */
1512 #define INSN_FROM_TARGET_P(RTX) \
1513 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1514 CALL_INSN)->in_struct)
1516 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1517 See the comments for ADDR_DIFF_VEC in rtl.def. */
1518 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1520 /* In a VALUE, the value cselib has assigned to RTX.
1521 This is a "struct cselib_val", see cselib.h. */
1522 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1524 /* Holds a list of notes on what this insn does to various REGs.
1525 It is a chain of EXPR_LIST rtx's, where the second operand is the
1526 chain pointer and the first operand is the REG being described.
1527 The mode field of the EXPR_LIST contains not a real machine mode
1528 but a value from enum reg_note. */
1529 #define REG_NOTES(INSN) XEXP(INSN, 6)
1531 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1533 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1537 #define DEF_REG_NOTE(NAME) NAME,
1538 #include "reg-notes.def"
1543 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1544 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1545 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1546 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1548 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1550 extern const char * const reg_note_name
[];
1551 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1553 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1554 USE and CLOBBER expressions.
1555 USE expressions list the registers filled with arguments that
1556 are passed to the function.
1557 CLOBBER expressions document the registers explicitly clobbered
1559 Pseudo registers can not be mentioned in this list. */
1560 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1562 /* The label-number of a code-label. The assembler label
1563 is made from `L' and the label-number printed in decimal.
1564 Label numbers are unique in a compilation. */
1565 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1567 /* In a NOTE that is a line number, this is a string for the file name that the
1568 line is in. We use the same field to record block numbers temporarily in
1569 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1570 between ints and pointers if we use a different macro for the block number.)
1574 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1575 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1576 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1577 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1578 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1579 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1580 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1581 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1582 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1584 /* In a NOTE that is a line number, this is the line number.
1585 Other kinds of NOTEs are identified by negative numbers here. */
1586 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1588 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1589 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1590 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1592 /* Variable declaration and the location of a variable. */
1593 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1594 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1596 /* Initialization status of the variable in the location. Status
1597 can be unknown, uninitialized or initialized. See enumeration
1599 #define PAT_VAR_LOCATION_STATUS(PAT) \
1600 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1601 ->u2.var_location_status)
1603 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1604 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1605 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1606 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1607 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1608 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1609 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1611 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1612 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1614 /* Accessors for a tree-expanded var location debug insn. */
1615 #define INSN_VAR_LOCATION_DECL(INSN) \
1616 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1617 #define INSN_VAR_LOCATION_LOC(INSN) \
1618 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1619 #define INSN_VAR_LOCATION_STATUS(INSN) \
1620 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1622 /* Expand to the RTL that denotes an unknown variable location in a
1624 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1626 /* Determine whether X is such an unknown location. */
1627 #define VAR_LOC_UNKNOWN_P(X) \
1628 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1630 /* 1 if RTX is emitted after a call, but it should take effect before
1631 the call returns. */
1632 #define NOTE_DURING_CALL_P(RTX) \
1633 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1635 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1636 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1638 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1639 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1641 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1642 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1644 /* Codes that appear in the NOTE_KIND field for kinds of notes
1645 that are not line numbers. These codes are all negative.
1647 Notice that we do not try to use zero here for any of
1648 the special note codes because sometimes the source line
1649 actually can be zero! This happens (for example) when we
1650 are generating code for the per-translation-unit constructor
1651 and destructor routines for some C++ translation unit. */
1655 #define DEF_INSN_NOTE(NAME) NAME,
1656 #include "insn-notes.def"
1657 #undef DEF_INSN_NOTE
1662 /* Names for NOTE insn's other than line numbers. */
1664 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1665 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1666 (note_insn_name[(NOTE_CODE)])
1668 /* The name of a label, in case it corresponds to an explicit label
1669 in the input source code. */
1670 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1672 /* In jump.c, each label contains a count of the number
1673 of LABEL_REFs that point at it, so unused labels can be deleted. */
1674 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1676 /* Labels carry a two-bit field composed of the ->jump and ->call
1677 bits. This field indicates whether the label is an alternate
1678 entry point, and if so, what kind. */
1681 LABEL_NORMAL
= 0, /* ordinary label */
1682 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1683 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1684 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1687 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1689 /* Retrieve the kind of LABEL. */
1690 #define LABEL_KIND(LABEL) __extension__ \
1691 ({ __typeof (LABEL) const _label = (LABEL); \
1692 if (! LABEL_P (_label)) \
1693 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1695 (enum label_kind) ((_label->jump << 1) | _label->call); })
1697 /* Set the kind of LABEL. */
1698 #define SET_LABEL_KIND(LABEL, KIND) do { \
1699 __typeof (LABEL) const _label = (LABEL); \
1700 const unsigned int _kind = (KIND); \
1701 if (! LABEL_P (_label)) \
1702 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1704 _label->jump = ((_kind >> 1) & 1); \
1705 _label->call = (_kind & 1); \
1710 /* Retrieve the kind of LABEL. */
1711 #define LABEL_KIND(LABEL) \
1712 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1714 /* Set the kind of LABEL. */
1715 #define SET_LABEL_KIND(LABEL, KIND) do { \
1716 rtx const _label = (LABEL); \
1717 const unsigned int _kind = (KIND); \
1718 _label->jump = ((_kind >> 1) & 1); \
1719 _label->call = (_kind & 1); \
1722 #endif /* rtl flag checking */
1724 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1726 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1727 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1728 be decremented and possibly the label can be deleted. */
1729 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1731 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1733 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1736 /* Methods of rtx_jump_insn. */
1738 inline rtx
rtx_jump_insn::jump_label () const
1740 return JUMP_LABEL (this);
1743 inline rtx_code_label
*rtx_jump_insn::jump_target () const
1745 return safe_as_a
<rtx_code_label
*> (JUMP_LABEL (this));
1748 inline void rtx_jump_insn::set_jump_target (rtx_code_label
*target
)
1750 JUMP_LABEL (this) = target
;
1753 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1754 goes through all the LABEL_REFs that jump to that label. The chain
1755 eventually winds up at the CODE_LABEL: it is circular. */
1756 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1758 /* Get the label that a LABEL_REF references. */
1759 #define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF)
1762 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1763 be used on RHS. Use SET_REGNO to change the value. */
1764 #define REGNO(RTX) (rhs_regno(RTX))
1765 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1767 /* Return the number of consecutive registers in a REG. This is always
1768 1 for pseudo registers and is determined by HARD_REGNO_NREGS for
1770 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1772 /* ORIGINAL_REGNO holds the number the register originally had; for a
1773 pseudo register turned into a hard reg this will hold the old pseudo
1775 #define ORIGINAL_REGNO(RTX) \
1776 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1778 /* Force the REGNO macro to only be used on the lhs. */
1779 static inline unsigned int
1780 rhs_regno (const_rtx x
)
1782 return REG_CHECK (x
)->regno
;
1785 /* Return the final register in REG X plus one. */
1786 static inline unsigned int
1787 END_REGNO (const_rtx x
)
1789 return REGNO (x
) + REG_NREGS (x
);
1792 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1793 bypassing the df machinery. */
1795 set_regno_raw (rtx x
, unsigned int regno
, unsigned int nregs
)
1797 reg_info
*reg
= REG_CHECK (x
);
1802 /* 1 if RTX is a reg or parallel that is the current function's return
1804 #define REG_FUNCTION_VALUE_P(RTX) \
1805 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1807 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1808 #define REG_USERVAR_P(RTX) \
1809 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1811 /* 1 if RTX is a reg that holds a pointer value. */
1812 #define REG_POINTER(RTX) \
1813 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1815 /* 1 if RTX is a mem that holds a pointer value. */
1816 #define MEM_POINTER(RTX) \
1817 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1819 /* 1 if the given register REG corresponds to a hard register. */
1820 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1822 /* 1 if the given register number REG_NO corresponds to a hard register. */
1823 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1825 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1826 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1827 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1829 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1830 elements actually needed to represent the constant.
1831 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1832 significant HOST_WIDE_INT. */
1833 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1834 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1835 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1837 /* For a CONST_DOUBLE:
1838 #if TARGET_SUPPORTS_WIDE_INT == 0
1839 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1840 low-order word and ..._HIGH the high-order.
1842 For a float, there is a REAL_VALUE_TYPE structure, and
1843 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1844 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1845 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1846 #define CONST_DOUBLE_REAL_VALUE(r) \
1847 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1849 #define CONST_FIXED_VALUE(r) \
1850 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1851 #define CONST_FIXED_VALUE_HIGH(r) \
1852 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1853 #define CONST_FIXED_VALUE_LOW(r) \
1854 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1856 /* For a CONST_VECTOR, return element #n. */
1857 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1859 /* For a CONST_VECTOR, return the number of elements in a vector. */
1860 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1862 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1863 SUBREG_BYTE extracts the byte-number. */
1865 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1866 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1869 /* Return the right cost to give to an operation
1870 to make the cost of the corresponding register-to-register instruction
1871 N times that of a fast register-to-register instruction. */
1872 #define COSTS_N_INSNS(N) ((N) * 4)
1874 /* Maximum cost of an rtl expression. This value has the special meaning
1875 not to use an rtx with this cost under any circumstances. */
1876 #define MAX_COST INT_MAX
1878 /* Return true if CODE always has VOIDmode. */
1881 always_void_p (enum rtx_code code
)
1886 /* A structure to hold all available cost information about an rtl
1888 struct full_rtx_costs
1894 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1896 init_costs_to_max (struct full_rtx_costs
*c
)
1898 c
->speed
= MAX_COST
;
1902 /* Initialize a full_rtx_costs structure C to zero cost. */
1904 init_costs_to_zero (struct full_rtx_costs
*c
)
1910 /* Compare two full_rtx_costs structures A and B, returning true
1911 if A < B when optimizing for speed. */
1913 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1917 return (a
->speed
< b
->speed
1918 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1920 return (a
->size
< b
->size
1921 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1924 /* Increase both members of the full_rtx_costs structure C by the
1927 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1929 c
->speed
+= COSTS_N_INSNS (n
);
1930 c
->size
+= COSTS_N_INSNS (n
);
1933 /* Describes the shape of a subreg:
1935 inner_mode == the mode of the SUBREG_REG
1936 offset == the SUBREG_BYTE
1937 outer_mode == the mode of the SUBREG itself. */
1938 struct subreg_shape
{
1939 subreg_shape (machine_mode
, unsigned int, machine_mode
);
1940 bool operator == (const subreg_shape
&) const;
1941 bool operator != (const subreg_shape
&) const;
1942 unsigned int unique_id () const;
1944 machine_mode inner_mode
;
1945 unsigned int offset
;
1946 machine_mode outer_mode
;
1950 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
1951 unsigned int offset_in
,
1952 machine_mode outer_mode_in
)
1953 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
1957 subreg_shape::operator == (const subreg_shape
&other
) const
1959 return (inner_mode
== other
.inner_mode
1960 && offset
== other
.offset
1961 && outer_mode
== other
.outer_mode
);
1965 subreg_shape::operator != (const subreg_shape
&other
) const
1967 return !operator == (other
);
1970 /* Return an integer that uniquely identifies this shape. Structures
1971 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
1972 current mode is anywhere near being 65536 bytes in size, so the
1973 id comfortably fits in an int. */
1976 subreg_shape::unique_id () const
1978 STATIC_ASSERT (MAX_MACHINE_MODE
<= 256);
1979 return (int) inner_mode
+ ((int) outer_mode
<< 8) + (offset
<< 16);
1982 /* Return the shape of a SUBREG rtx. */
1984 static inline subreg_shape
1985 shape_of_subreg (const_rtx x
)
1987 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
1988 SUBREG_BYTE (x
), GET_MODE (x
));
1991 /* Information about an address. This structure is supposed to be able
1992 to represent all supported target addresses. Please extend it if it
1993 is not yet general enough. */
1994 struct address_info
{
1995 /* The mode of the value being addressed, or VOIDmode if this is
1996 a load-address operation with no known address mode. */
1999 /* The address space. */
2002 /* A pointer to the top-level address. */
2005 /* A pointer to the inner address, after all address mutations
2006 have been stripped from the top-level address. It can be one
2009 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2011 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2012 points to the step value, depending on whether the step is variable
2013 or constant respectively. SEGMENT is null.
2015 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2016 with null fields evaluating to 0. */
2019 /* Components that make up *INNER. Each one may be null or nonnull.
2020 When nonnull, their meanings are as follows:
2022 - *SEGMENT is the "segment" of memory to which the address refers.
2023 This value is entirely target-specific and is only called a "segment"
2024 because that's its most typical use. It contains exactly one UNSPEC,
2025 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2028 - *BASE is a variable expression representing a base address.
2029 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2031 - *INDEX is a variable expression representing an index value.
2032 It may be a scaled expression, such as a MULT. It has exactly
2033 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2035 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2036 unmutated RTX_CONST_OBJ. */
2047 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2048 of BASE_TERM, otherwise it is null. */
2051 /* ADDRESS if this structure describes an address operand, MEM if
2052 it describes a MEM address. */
2053 enum rtx_code addr_outer_code
;
2055 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2056 enum rtx_code base_outer_code
;
2058 /* True if this is an RTX_AUTOINC address. */
2062 /* This is used to bundle an rtx and a mode together so that the pair
2063 can be used with the wi:: routines. If we ever put modes into rtx
2064 integer constants, this should go away and then just pass an rtx in. */
2065 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
2070 struct int_traits
<rtx_mode_t
>
2072 static const enum precision_type precision_type
= VAR_PRECISION
;
2073 static const bool host_dependent_precision
= false;
2074 /* This ought to be true, except for the special case that BImode
2075 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2076 static const bool is_sign_extended
= false;
2077 static unsigned int get_precision (const rtx_mode_t
&);
2078 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
2079 const rtx_mode_t
&);
2084 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
2086 return GET_MODE_PRECISION (x
.second
);
2089 inline wi::storage_ref
2090 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
2091 unsigned int precision
,
2092 const rtx_mode_t
&x
)
2094 gcc_checking_assert (precision
== get_precision (x
));
2095 switch (GET_CODE (x
.first
))
2098 if (precision
< HOST_BITS_PER_WIDE_INT
)
2099 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2100 targets is 1 rather than -1. */
2101 gcc_checking_assert (INTVAL (x
.first
)
2102 == sext_hwi (INTVAL (x
.first
), precision
)
2103 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2105 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2107 case CONST_WIDE_INT
:
2108 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2109 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2111 #if TARGET_SUPPORTS_WIDE_INT == 0
2113 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2123 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2124 wide_int
min_value (machine_mode
, signop
);
2125 wide_int
max_value (machine_mode
, signop
);
2128 inline wi::hwi_with_prec
2129 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2131 return shwi (val
, GET_MODE_PRECISION (mode
));
2134 /* Produce the smallest number that is represented in MODE. The precision
2135 is taken from MODE and the sign from SGN. */
2137 wi::min_value (machine_mode mode
, signop sgn
)
2139 return min_value (GET_MODE_PRECISION (mode
), sgn
);
2142 /* Produce the largest number that is represented in MODE. The precision
2143 is taken from MODE and the sign from SGN. */
2145 wi::max_value (machine_mode mode
, signop sgn
)
2147 return max_value (GET_MODE_PRECISION (mode
), sgn
);
2150 extern void init_rtlanal (void);
2151 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
2152 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2153 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
2154 struct full_rtx_costs
*);
2155 extern unsigned int subreg_lsb (const_rtx
);
2156 extern unsigned int subreg_lsb_1 (machine_mode
, machine_mode
,
2158 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2159 unsigned int, machine_mode
);
2160 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2161 unsigned int, machine_mode
);
2162 extern unsigned int subreg_regno (const_rtx
);
2163 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2164 unsigned int, machine_mode
);
2165 extern unsigned int subreg_nregs (const_rtx
);
2166 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2167 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2168 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2169 extern bool constant_pool_constant_p (rtx
);
2170 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2171 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2172 extern void split_double (rtx
, rtx
*, rtx
*);
2173 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2174 extern void decompose_address (struct address_info
*, rtx
*,
2175 machine_mode
, addr_space_t
, enum rtx_code
);
2176 extern void decompose_lea_address (struct address_info
*, rtx
*);
2177 extern void decompose_mem_address (struct address_info
*, rtx
);
2178 extern void update_address (struct address_info
*);
2179 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2180 extern enum rtx_code
get_index_code (const struct address_info
*);
2182 #ifndef GENERATOR_FILE
2183 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2184 rather than size. */
2187 set_rtx_cost (rtx x
, bool speed_p
)
2189 return rtx_cost (x
, INSN
, 4, speed_p
);
2192 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2195 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2197 get_full_rtx_cost (x
, INSN
, 4, c
);
2200 /* Return the cost of moving X into a register, relative to the cost
2201 of a register move. SPEED_P is true if optimizing for speed rather
2205 set_src_cost (rtx x
, bool speed_p
)
2207 return rtx_cost (x
, SET
, 1, speed_p
);
2210 /* Like set_src_cost, but return both the speed and size costs in C. */
2213 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
2215 get_full_rtx_cost (x
, SET
, 1, c
);
2219 /* 1 if RTX is a subreg containing a reg that is already known to be
2220 sign- or zero-extended from the mode of the subreg to the mode of
2221 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2224 When used as a LHS, is means that this extension must be done
2225 when assigning to SUBREG_REG. */
2227 #define SUBREG_PROMOTED_VAR_P(RTX) \
2228 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2230 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2231 this gives the necessary extensions:
2232 0 - signed (SPR_SIGNED)
2233 1 - normal unsigned (SPR_UNSIGNED)
2234 2 - value is both sign and unsign extended for mode
2235 (SPR_SIGNED_AND_UNSIGNED).
2236 -1 - pointer unsigned, which most often can be handled like unsigned
2237 extension, except for generating instructions where we need to
2238 emit special code (ptr_extend insns) on some architectures
2241 const int SRP_POINTER
= -1;
2242 const int SRP_SIGNED
= 0;
2243 const int SRP_UNSIGNED
= 1;
2244 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2246 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2247 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2249 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2254 _rtx->volatil = 0; \
2255 _rtx->unchanging = 0; \
2258 _rtx->volatil = 0; \
2259 _rtx->unchanging = 1; \
2261 case SRP_UNSIGNED: \
2262 _rtx->volatil = 1; \
2263 _rtx->unchanging = 0; \
2265 case SRP_SIGNED_AND_UNSIGNED: \
2266 _rtx->volatil = 1; \
2267 _rtx->unchanging = 1; \
2272 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2273 including SRP_SIGNED_AND_UNSIGNED if promoted for
2274 both signed and unsigned. */
2275 #define SUBREG_PROMOTED_GET(RTX) \
2276 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2277 + (RTX)->unchanging - 1)
2279 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2280 #define SUBREG_PROMOTED_SIGN(RTX) \
2281 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2282 : (RTX)->unchanging - 1)
2284 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2286 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2287 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2289 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2290 for UNSIGNED type. */
2291 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2292 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2294 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2295 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2296 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2297 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2298 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2300 /* True if the subreg was generated by LRA for reload insns. Such
2301 subregs are valid only during LRA. */
2302 #define LRA_SUBREG_P(RTX) \
2303 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2305 /* True if call is instrumented by Pointer Bounds Checker. */
2306 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \
2307 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump)
2309 /* Access various components of an ASM_OPERANDS rtx. */
2311 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2312 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2313 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2314 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2315 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2316 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2317 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2318 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2319 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2320 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2321 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2322 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2323 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2324 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2325 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2326 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2327 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2328 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2330 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2331 #define MEM_READONLY_P(RTX) \
2332 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2334 /* 1 if RTX is a mem and we should keep the alias set for this mem
2335 unchanged when we access a component. Set to 1, or example, when we
2336 are already in a non-addressable component of an aggregate. */
2337 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2338 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2340 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2341 #define MEM_VOLATILE_P(RTX) \
2342 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2343 ASM_INPUT)->volatil)
2345 /* 1 if RTX is a mem that cannot trap. */
2346 #define MEM_NOTRAP_P(RTX) \
2347 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2349 /* The memory attribute block. We provide access macros for each value
2350 in the block and provide defaults if none specified. */
2351 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2353 /* The register attribute block. We provide access macros for each value
2354 in the block and provide defaults if none specified. */
2355 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2357 #ifndef GENERATOR_FILE
2358 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2359 set, and may alias anything. Otherwise, the MEM can only alias
2360 MEMs in a conflicting alias set. This value is set in a
2361 language-dependent manner in the front-end, and should not be
2362 altered in the back-end. These set numbers are tested with
2363 alias_sets_conflict_p. */
2364 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2366 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2367 refer to part of a DECL. It may also be a COMPONENT_REF. */
2368 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2370 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2371 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2373 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2374 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2376 /* For a MEM rtx, the address space. */
2377 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2379 /* For a MEM rtx, true if its MEM_SIZE is known. */
2380 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2382 /* For a MEM rtx, the size in bytes of the MEM. */
2383 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2385 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2386 mode as a default when STRICT_ALIGNMENT, but not if not. */
2387 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2389 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2392 /* For a REG rtx, the decl it is known to refer to, if it is known to
2393 refer to part of a DECL. */
2394 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2396 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2398 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2400 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2401 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2402 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2403 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2404 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2405 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2406 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2407 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2409 /* 1 if RTX is a label_ref for a nonlocal label. */
2410 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2411 REG_LABEL_TARGET note. */
2412 #define LABEL_REF_NONLOCAL_P(RTX) \
2413 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2415 /* 1 if RTX is a code_label that should always be considered to be needed. */
2416 #define LABEL_PRESERVE_P(RTX) \
2417 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2419 /* During sched, 1 if RTX is an insn that must be scheduled together
2420 with the preceding insn. */
2421 #define SCHED_GROUP_P(RTX) \
2422 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2423 JUMP_INSN, CALL_INSN)->in_struct)
2425 /* For a SET rtx, SET_DEST is the place that is set
2426 and SET_SRC is the value it is set to. */
2427 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2428 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2429 #define SET_IS_RETURN_P(RTX) \
2430 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2432 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2433 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2434 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2436 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2437 conditionally executing the code on, COND_EXEC_CODE is the code
2438 to execute if the condition is true. */
2439 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2440 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2442 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2444 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2445 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2447 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2448 tree constant pool. This information is private to varasm.c. */
2449 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2450 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2451 (RTX), SYMBOL_REF)->frame_related)
2453 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2454 #define SYMBOL_REF_FLAG(RTX) \
2455 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2457 /* 1 if RTX is a symbol_ref that has been the library function in
2458 emit_library_call. */
2459 #define SYMBOL_REF_USED(RTX) \
2460 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2462 /* 1 if RTX is a symbol_ref for a weak symbol. */
2463 #define SYMBOL_REF_WEAK(RTX) \
2464 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2466 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2467 SYMBOL_REF_CONSTANT. */
2468 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2470 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2472 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2473 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2475 /* The tree (decl or constant) associated with the symbol, or null. */
2476 #define SYMBOL_REF_DECL(RTX) \
2477 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2479 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2480 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2481 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2483 /* The rtx constant pool entry for a symbol, or null. */
2484 #define SYMBOL_REF_CONSTANT(RTX) \
2485 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2487 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2488 information derivable from the tree decl associated with this symbol.
2489 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2490 decl. In some cases this is a bug. But beyond that, it's nice to cache
2491 this information to avoid recomputing it. Finally, this allows space for
2492 the target to store more than one bit of information, as with
2494 #define SYMBOL_REF_FLAGS(RTX) \
2495 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2496 ->u2.symbol_ref_flags)
2498 /* These flags are common enough to be defined for all targets. They
2499 are computed by the default version of targetm.encode_section_info. */
2501 /* Set if this symbol is a function. */
2502 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2503 #define SYMBOL_REF_FUNCTION_P(RTX) \
2504 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2505 /* Set if targetm.binds_local_p is true. */
2506 #define SYMBOL_FLAG_LOCAL (1 << 1)
2507 #define SYMBOL_REF_LOCAL_P(RTX) \
2508 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2509 /* Set if targetm.in_small_data_p is true. */
2510 #define SYMBOL_FLAG_SMALL (1 << 2)
2511 #define SYMBOL_REF_SMALL_P(RTX) \
2512 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2513 /* The three-bit field at [5:3] is true for TLS variables; use
2514 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2515 #define SYMBOL_FLAG_TLS_SHIFT 3
2516 #define SYMBOL_REF_TLS_MODEL(RTX) \
2517 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2518 /* Set if this symbol is not defined in this translation unit. */
2519 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2520 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2521 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2522 /* Set if this symbol has a block_symbol structure associated with it. */
2523 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2524 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2525 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2526 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2527 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2528 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2529 #define SYMBOL_REF_ANCHOR_P(RTX) \
2530 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2532 /* Subsequent bits are available for the target to use. */
2533 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2534 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2536 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2537 structure to which the symbol belongs, or NULL if it has not been
2538 assigned a block. */
2539 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2541 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2542 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2543 RTX has not yet been assigned to a block, or it has not been given an
2544 offset within that block. */
2545 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2547 /* True if RTX is flagged to be a scheduling barrier. */
2548 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2549 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2551 /* Indicate whether the machine has any sort of auto increment addressing.
2552 If not, we can avoid checking for REG_INC notes. */
2554 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2555 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2556 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2557 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2558 #define AUTO_INC_DEC
2561 /* Define a macro to look for REG_INC notes,
2562 but save time on machines where they never exist. */
2565 #define FIND_REG_INC_NOTE(INSN, REG) \
2566 ((REG) != NULL_RTX && REG_P ((REG)) \
2567 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2568 : find_reg_note ((INSN), REG_INC, (REG)))
2570 #define FIND_REG_INC_NOTE(INSN, REG) 0
2573 #ifndef HAVE_PRE_INCREMENT
2574 #define HAVE_PRE_INCREMENT 0
2577 #ifndef HAVE_PRE_DECREMENT
2578 #define HAVE_PRE_DECREMENT 0
2581 #ifndef HAVE_POST_INCREMENT
2582 #define HAVE_POST_INCREMENT 0
2585 #ifndef HAVE_POST_DECREMENT
2586 #define HAVE_POST_DECREMENT 0
2589 #ifndef HAVE_POST_MODIFY_DISP
2590 #define HAVE_POST_MODIFY_DISP 0
2593 #ifndef HAVE_POST_MODIFY_REG
2594 #define HAVE_POST_MODIFY_REG 0
2597 #ifndef HAVE_PRE_MODIFY_DISP
2598 #define HAVE_PRE_MODIFY_DISP 0
2601 #ifndef HAVE_PRE_MODIFY_REG
2602 #define HAVE_PRE_MODIFY_REG 0
2606 /* Some architectures do not have complete pre/post increment/decrement
2607 instruction sets, or only move some modes efficiently. These macros
2608 allow us to tune autoincrement generation. */
2610 #ifndef USE_LOAD_POST_INCREMENT
2611 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2614 #ifndef USE_LOAD_POST_DECREMENT
2615 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2618 #ifndef USE_LOAD_PRE_INCREMENT
2619 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2622 #ifndef USE_LOAD_PRE_DECREMENT
2623 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2626 #ifndef USE_STORE_POST_INCREMENT
2627 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2630 #ifndef USE_STORE_POST_DECREMENT
2631 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2634 #ifndef USE_STORE_PRE_INCREMENT
2635 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2638 #ifndef USE_STORE_PRE_DECREMENT
2639 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2642 /* Nonzero when we are generating CONCATs. */
2643 extern int generating_concat_p
;
2645 /* Nonzero when we are expanding trees to RTL. */
2646 extern int currently_expanding_to_rtl
;
2648 /* Generally useful functions. */
2651 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2652 extern rtx
plus_constant (machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2655 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
2656 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2657 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2658 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2659 #define const_wide_int_alloc(NWORDS) \
2660 rtx_alloc_v (CONST_WIDE_INT, \
2661 (sizeof (struct hwivec_def) \
2662 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2664 extern rtvec rtvec_alloc (int);
2665 extern rtvec
shallow_copy_rtvec (rtvec
);
2666 extern bool shared_const_p (const_rtx
);
2667 extern rtx
copy_rtx (rtx
);
2668 extern void dump_rtx_statistics (void);
2671 extern rtx
copy_rtx_if_shared (rtx
);
2674 extern unsigned int rtx_size (const_rtx
);
2675 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
2676 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2677 extern int rtx_equal_p (const_rtx
, const_rtx
);
2680 extern rtvec
gen_rtvec_v (int, rtx
*);
2681 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
2682 extern rtx
gen_reg_rtx (machine_mode
);
2683 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, int);
2684 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
2685 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2686 extern rtx_code_label
*gen_label_rtx (void);
2687 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
2690 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
2693 extern rtx
gen_highpart (machine_mode
, rtx
);
2694 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
2695 extern rtx
operand_subword (rtx
, unsigned int, int, machine_mode
);
2698 extern rtx
operand_subword_force (rtx
, unsigned int, machine_mode
);
2699 extern bool paradoxical_subreg_p (const_rtx
);
2700 extern int subreg_lowpart_p (const_rtx
);
2701 extern unsigned int subreg_lowpart_offset (machine_mode
,
2703 extern unsigned int subreg_highpart_offset (machine_mode
,
2705 extern int byte_lowpart_offset (machine_mode
, machine_mode
);
2706 extern rtx
make_safe_from (rtx
, rtx
);
2707 extern rtx
convert_memory_address_addr_space (machine_mode
, rtx
,
2709 #define convert_memory_address(to_mode,x) \
2710 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2711 extern const char *get_insn_name (int);
2712 extern rtx_insn
*get_last_insn_anywhere (void);
2713 extern rtx_insn
*get_first_nonnote_insn (void);
2714 extern rtx_insn
*get_last_nonnote_insn (void);
2715 extern void start_sequence (void);
2716 extern void push_to_sequence (rtx_insn
*);
2717 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
2718 extern void end_sequence (void);
2719 #if TARGET_SUPPORTS_WIDE_INT == 0
2720 extern double_int
rtx_to_double_int (const_rtx
);
2722 extern void cwi_output_hex (FILE *, const_rtx
);
2723 #ifndef GENERATOR_FILE
2724 extern rtx
immed_wide_int_const (const wide_int_ref
&, machine_mode
);
2726 #if TARGET_SUPPORTS_WIDE_INT == 0
2727 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
2733 extern rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
2736 extern rtx
force_const_mem (machine_mode
, rtx
);
2741 extern rtx
get_pool_constant (const_rtx
);
2742 extern rtx
get_pool_constant_mark (rtx
, bool *);
2743 extern machine_mode
get_pool_mode (const_rtx
);
2744 extern rtx
simplify_subtraction (rtx
);
2745 extern void decide_function_section (tree
);
2748 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
2749 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
2750 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, int);
2751 extern rtx_jump_insn
*emit_jump_insn_before (rtx
, rtx
);
2752 extern rtx_jump_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
2753 extern rtx_jump_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*, int);
2754 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
2755 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
2756 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, int);
2757 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx_insn
*);
2758 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
2759 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
2760 extern rtx_barrier
*emit_barrier_before (rtx
);
2761 extern rtx_code_label
*emit_label_before (rtx
, rtx_insn
*);
2762 extern rtx_note
*emit_note_before (enum insn_note
, rtx_insn
*);
2763 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
2764 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
2765 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
2766 extern rtx_jump_insn
*emit_jump_insn_after (rtx
, rtx
);
2767 extern rtx_jump_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
2768 extern rtx_jump_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
2769 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
2770 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
2771 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
2772 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
2773 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
2774 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
2775 extern rtx_barrier
*emit_barrier_after (rtx
);
2776 extern rtx_insn
*emit_label_after (rtx
, rtx_insn
*);
2777 extern rtx_note
*emit_note_after (enum insn_note
, rtx_insn
*);
2778 extern rtx_insn
*emit_insn (rtx
);
2779 extern rtx_insn
*emit_debug_insn (rtx
);
2780 extern rtx_insn
*emit_jump_insn (rtx
);
2781 extern rtx_insn
*emit_call_insn (rtx
);
2782 extern rtx_code_label
*emit_label (rtx
);
2783 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
2784 extern rtx_barrier
*emit_barrier (void);
2785 extern rtx_note
*emit_note (enum insn_note
);
2786 extern rtx_note
*emit_note_copy (rtx_note
*);
2787 extern rtx_insn
*gen_clobber (rtx
);
2788 extern rtx_insn
*emit_clobber (rtx
);
2789 extern rtx_insn
*gen_use (rtx
);
2790 extern rtx_insn
*emit_use (rtx
);
2791 extern rtx_insn
*make_insn_raw (rtx
);
2792 extern void add_function_usage_to (rtx
, rtx
);
2793 extern rtx_call_insn
*last_call_insn (void);
2794 extern rtx_insn
*previous_insn (rtx_insn
*);
2795 extern rtx_insn
*next_insn (rtx_insn
*);
2796 extern rtx_insn
*prev_nonnote_insn (rtx
);
2797 extern rtx_insn
*prev_nonnote_insn_bb (rtx
);
2798 extern rtx_insn
*next_nonnote_insn (rtx
);
2799 extern rtx_insn
*next_nonnote_insn_bb (rtx_insn
*);
2800 extern rtx_insn
*prev_nondebug_insn (rtx
);
2801 extern rtx_insn
*next_nondebug_insn (rtx
);
2802 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx
);
2803 extern rtx_insn
*next_nonnote_nondebug_insn (rtx
);
2804 extern rtx_insn
*prev_real_insn (rtx
);
2805 extern rtx_insn
*next_real_insn (rtx
);
2806 extern rtx_insn
*prev_active_insn (rtx
);
2807 extern rtx_insn
*next_active_insn (rtx
);
2808 extern int active_insn_p (const_rtx
);
2809 extern rtx_insn
*next_cc0_user (rtx
);
2810 extern rtx_insn
*prev_cc0_setter (rtx_insn
*);
2813 extern int insn_line (const rtx_insn
*);
2814 extern const char * insn_file (const rtx_insn
*);
2815 extern tree
insn_scope (const rtx_insn
*);
2816 extern expanded_location
insn_location (const rtx_insn
*);
2817 extern location_t prologue_location
, epilogue_location
;
2820 extern enum rtx_code
reverse_condition (enum rtx_code
);
2821 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
2822 extern enum rtx_code
swap_condition (enum rtx_code
);
2823 extern enum rtx_code
unsigned_condition (enum rtx_code
);
2824 extern enum rtx_code
signed_condition (enum rtx_code
);
2825 extern void mark_jump_label (rtx
, rtx_insn
*, int);
2828 extern rtx_insn
*delete_related_insns (rtx
);
2831 extern rtx
*find_constant_term_loc (rtx
*);
2834 extern rtx_insn
*try_split (rtx
, rtx_insn
*, int);
2835 extern int split_branch_probability
;
2837 /* In insn-recog.c (generated by genrecog). */
2838 extern rtx_insn
*split_insns (rtx
, rtx_insn
*);
2840 /* In simplify-rtx.c */
2841 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
2843 extern rtx
simplify_unary_operation (enum rtx_code
, machine_mode
, rtx
,
2845 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
2847 extern rtx
simplify_binary_operation (enum rtx_code
, machine_mode
, rtx
,
2849 extern rtx
simplify_ternary_operation (enum rtx_code
, machine_mode
,
2850 machine_mode
, rtx
, rtx
, rtx
);
2851 extern rtx
simplify_const_relational_operation (enum rtx_code
,
2852 machine_mode
, rtx
, rtx
);
2853 extern rtx
simplify_relational_operation (enum rtx_code
, machine_mode
,
2854 machine_mode
, rtx
, rtx
);
2855 extern rtx
simplify_gen_binary (enum rtx_code
, machine_mode
, rtx
, rtx
);
2856 extern rtx
simplify_gen_unary (enum rtx_code
, machine_mode
, rtx
,
2858 extern rtx
simplify_gen_ternary (enum rtx_code
, machine_mode
,
2859 machine_mode
, rtx
, rtx
, rtx
);
2860 extern rtx
simplify_gen_relational (enum rtx_code
, machine_mode
,
2861 machine_mode
, rtx
, rtx
);
2862 extern rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
,
2864 extern rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
,
2866 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
2867 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
2868 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
2869 extern rtx
simplify_rtx (const_rtx
);
2870 extern rtx
avoid_constant_pool_reference (rtx
);
2871 extern rtx
delegitimize_mem_from_attrs (rtx
);
2872 extern bool mode_signbit_p (machine_mode
, const_rtx
);
2873 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
2874 extern bool val_signbit_known_set_p (machine_mode
,
2875 unsigned HOST_WIDE_INT
);
2876 extern bool val_signbit_known_clear_p (machine_mode
,
2877 unsigned HOST_WIDE_INT
);
2880 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
2883 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
2887 extern rtx
set_for_reg_notes (rtx
);
2888 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
2889 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
2890 extern void set_insn_deleted (rtx
);
2892 /* Functions in rtlanal.c */
2894 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
2896 /* Handle the cheap and common cases inline for performance. */
2898 inline rtx
single_set (const rtx_insn
*insn
)
2903 if (GET_CODE (PATTERN (insn
)) == SET
)
2904 return PATTERN (insn
);
2906 /* Defer to the more expensive case. */
2907 return single_set_2 (insn
, PATTERN (insn
));
2910 extern machine_mode
get_address_mode (rtx mem
);
2911 extern int rtx_addr_can_trap_p (const_rtx
);
2912 extern bool nonzero_address_p (const_rtx
);
2913 extern int rtx_unstable_p (const_rtx
);
2914 extern bool rtx_varies_p (const_rtx
, bool);
2915 extern bool rtx_addr_varies_p (const_rtx
, bool);
2916 extern rtx
get_call_rtx_from (rtx
);
2917 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2918 extern rtx
get_related_value (const_rtx
);
2919 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2920 extern void split_const (rtx
, rtx
*, rtx
*);
2921 extern bool unsigned_reg_p (rtx
);
2922 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2923 extern int count_occurrences (const_rtx
, const_rtx
, int);
2924 extern int reg_referenced_p (const_rtx
, const_rtx
);
2925 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2926 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2927 extern int commutative_operand_precedence (rtx
);
2928 extern bool swap_commutative_operands_p (rtx
, rtx
);
2929 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2930 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
2931 extern int modified_in_p (const_rtx
, const_rtx
);
2932 extern int reg_set_p (const_rtx
, const_rtx
);
2933 extern int multiple_sets (const_rtx
);
2934 extern int set_noop_p (const_rtx
);
2935 extern int noop_move_p (const rtx_insn
*);
2936 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2937 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2938 extern const_rtx
set_of (const_rtx
, const_rtx
);
2939 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2940 extern void record_hard_reg_uses (rtx
*, void *);
2942 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
2943 extern void find_all_hard_reg_sets (const rtx_insn
*, HARD_REG_SET
*, bool);
2945 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2946 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2947 extern int dead_or_set_p (const_rtx
, const_rtx
);
2948 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2949 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2950 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2951 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2952 extern rtx
find_constant_src (const rtx_insn
*);
2953 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2954 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2955 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2956 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2957 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2958 extern void add_shallow_copy_of_reg_note (rtx_insn
*, rtx
);
2959 extern void remove_note (rtx
, const_rtx
);
2960 extern void remove_reg_equal_equiv_notes (rtx_insn
*);
2961 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2962 extern int side_effects_p (const_rtx
);
2963 extern int volatile_refs_p (const_rtx
);
2964 extern int volatile_insn_p (const_rtx
);
2965 extern int may_trap_p_1 (const_rtx
, unsigned);
2966 extern int may_trap_p (const_rtx
);
2967 extern int may_trap_or_fault_p (const_rtx
);
2968 extern bool can_throw_internal (const_rtx
);
2969 extern bool can_throw_external (const_rtx
);
2970 extern bool insn_could_throw_p (const_rtx
);
2971 extern bool insn_nothrow_p (const_rtx
);
2972 extern bool can_nonlocal_goto (const rtx_insn
*);
2973 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
2974 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
2975 extern int inequality_comparisons_p (const_rtx
);
2976 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2977 extern void replace_label (rtx
*, rtx
, rtx
, bool);
2978 extern void replace_label_in_insn (rtx_insn
*, rtx
, rtx
, bool);
2979 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
2980 extern bool tablejump_p (const rtx_insn
*, rtx
*, rtx_jump_table_data
**);
2981 extern int computed_jump_p (const rtx_insn
*);
2982 extern bool tls_referenced_p (const_rtx
);
2984 /* Overload for refers_to_regno_p for checking a single register. */
2986 refers_to_regno_p (unsigned int regnum
, const_rtx x
, rtx
* loc
= NULL
)
2988 return refers_to_regno_p (regnum
, regnum
+ 1, x
, loc
);
2991 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2992 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2993 NULL. The callback is passed the same opaque ARG passed to
2994 for_each_inc_dec. Return zero to continue looking for other
2995 autoinc operations or any other value to interrupt the traversal and
2996 return that value to the caller of for_each_inc_dec. */
2997 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
2998 rtx srcoff
, void *arg
);
2999 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
3001 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
3003 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
3004 rtx_equal_p_callback_function
);
3006 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
3008 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
3009 bool, hash_rtx_callback_function
);
3011 extern rtx
regno_use_in (unsigned int, rtx
);
3012 extern int auto_inc_p (const_rtx
);
3013 extern bool in_insn_list_p (const rtx_insn_list
*, const rtx_insn
*);
3014 extern void remove_node_from_expr_list (const_rtx
, rtx_expr_list
**);
3015 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
3016 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
3017 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
3018 extern bool keep_with_call_p (const rtx_insn
*);
3019 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
3020 extern int insn_rtx_cost (rtx
, bool);
3021 extern unsigned seq_cost (const rtx_insn
*, bool);
3023 /* Given an insn and condition, return a canonical description of
3024 the test being made. */
3025 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
3028 /* Given a JUMP_INSN, return a canonical description of the test
3030 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
3032 /* Information about a subreg of a hard register. */
3035 /* Offset of first hard register involved in the subreg. */
3037 /* Number of hard registers involved in the subreg. In the case of
3038 a paradoxical subreg, this is the number of registers that would
3039 be modified by writing to the subreg; some of them may be don't-care
3040 when reading from the subreg. */
3042 /* Whether this subreg can be represented as a hard reg with the new
3043 mode (by adding OFFSET to the original hard register). */
3044 bool representable_p
;
3047 extern void subreg_get_info (unsigned int, machine_mode
,
3048 unsigned int, machine_mode
,
3049 struct subreg_info
*);
3053 extern void free_EXPR_LIST_list (rtx_expr_list
**);
3054 extern void free_INSN_LIST_list (rtx_insn_list
**);
3055 extern void free_EXPR_LIST_node (rtx
);
3056 extern void free_INSN_LIST_node (rtx
);
3057 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
3058 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
3059 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
3060 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
3061 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
3062 extern rtx
remove_list_elem (rtx
, rtx
*);
3063 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
3064 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
3069 /* Resize reg info. */
3070 extern bool resize_reg_info (void);
3071 /* Free up register info memory. */
3072 extern void free_reg_info (void);
3073 extern void init_subregs_of_mode (void);
3074 extern void finish_subregs_of_mode (void);
3077 extern rtx
extract_asm_operands (rtx
);
3078 extern int asm_noperands (const_rtx
);
3079 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
3080 machine_mode
*, location_t
*);
3081 extern void get_referenced_operands (const char *, bool *, unsigned int);
3083 extern enum reg_class
reg_preferred_class (int);
3084 extern enum reg_class
reg_alternate_class (int);
3085 extern enum reg_class
reg_allocno_class (int);
3086 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
3089 extern void split_all_insns (void);
3090 extern unsigned int split_all_insns_noflow (void);
3092 #define MAX_SAVED_CONST_INT 64
3093 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
3095 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3096 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3097 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3098 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3099 extern GTY(()) rtx const_true_rtx
;
3101 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3103 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3104 same as VOIDmode. */
3106 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3108 /* Likewise, for the constants 1 and 2 and -1. */
3110 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3111 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3112 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3114 extern GTY(()) rtx pc_rtx
;
3115 extern GTY(()) rtx cc0_rtx
;
3116 extern GTY(()) rtx ret_rtx
;
3117 extern GTY(()) rtx simple_return_rtx
;
3118 extern GTY(()) rtx_insn
*invalid_insn_rtx
;
3120 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3121 is used to represent the frame pointer. This is because the
3122 hard frame pointer and the automatic variables are separated by an amount
3123 that cannot be determined until after register allocation. We can assume
3124 that in this case ELIMINABLE_REGS will be defined, one action of which
3125 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3126 #ifndef HARD_FRAME_POINTER_REGNUM
3127 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3130 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3131 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3132 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3135 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3136 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3137 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3140 /* Index labels for global_rtl. */
3141 enum global_rtl_index
3145 /* For register elimination to work properly these hard_frame_pointer_rtx,
3146 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3147 the same register. */
3148 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3149 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3151 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3152 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3154 GR_HARD_FRAME_POINTER
,
3156 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3157 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3158 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3163 GR_VIRTUAL_INCOMING_ARGS
,
3164 GR_VIRTUAL_STACK_ARGS
,
3165 GR_VIRTUAL_STACK_DYNAMIC
,
3166 GR_VIRTUAL_OUTGOING_ARGS
,
3168 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3173 /* Target-dependent globals. */
3174 struct GTY(()) target_rtl
{
3175 /* All references to the hard registers in global_rtl_index go through
3176 these unique rtl objects. On machines where the frame-pointer and
3177 arg-pointer are the same register, they use the same unique object.
3179 After register allocation, other rtl objects which used to be pseudo-regs
3180 may be clobbered to refer to the frame-pointer register.
3181 But references that were originally to the frame-pointer can be
3182 distinguished from the others because they contain frame_pointer_rtx.
3184 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3185 tricky: until register elimination has taken place hard_frame_pointer_rtx
3186 should be used if it is being set, and frame_pointer_rtx otherwise. After
3187 register elimination hard_frame_pointer_rtx should always be used.
3188 On machines where the two registers are same (most) then these are the
3190 rtx x_global_rtl
[GR_MAX
];
3192 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3193 rtx x_pic_offset_table_rtx
;
3195 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3196 This is used to implement __builtin_return_address for some machines;
3197 see for instance the MIPS port. */
3198 rtx x_return_address_pointer_rtx
;
3200 /* Commonly used RTL for hard registers. These objects are not
3201 necessarily unique, so we allocate them separately from global_rtl.
3202 They are initialized once per compilation unit, then copied into
3203 regno_reg_rtx at the beginning of each function. */
3204 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3206 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3207 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3209 /* Static hunks of RTL used by the aliasing code; these are treated
3210 as persistent to avoid unnecessary RTL allocations. */
3211 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3213 /* The default memory attributes for each mode. */
3214 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3216 /* Track if RTL has been initialized. */
3217 bool target_specific_initialized
;
3220 extern GTY(()) struct target_rtl default_target_rtl
;
3221 #if SWITCHABLE_TARGET
3222 extern struct target_rtl
*this_target_rtl
;
3224 #define this_target_rtl (&default_target_rtl)
3227 #define global_rtl \
3228 (this_target_rtl->x_global_rtl)
3229 #define pic_offset_table_rtx \
3230 (this_target_rtl->x_pic_offset_table_rtx)
3231 #define return_address_pointer_rtx \
3232 (this_target_rtl->x_return_address_pointer_rtx)
3233 #define top_of_stack \
3234 (this_target_rtl->x_top_of_stack)
3235 #define mode_mem_attrs \
3236 (this_target_rtl->x_mode_mem_attrs)
3238 /* All references to certain hard regs, except those created
3239 by allocating pseudo regs into them (when that's possible),
3240 go through these unique rtx objects. */
3241 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3242 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3243 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3244 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3246 #ifndef GENERATOR_FILE
3247 /* Return the attributes of a MEM rtx. */
3248 static inline struct mem_attrs
*
3249 get_mem_attrs (const_rtx x
)
3251 struct mem_attrs
*attrs
;
3253 attrs
= MEM_ATTRS (x
);
3255 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3260 /* Include the RTL generation functions. */
3262 #ifndef GENERATOR_FILE
3264 #undef gen_rtx_ASM_INPUT
3265 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3266 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3267 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3268 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3271 /* There are some RTL codes that require special attention; the
3272 generation functions included above do the raw handling. If you
3273 add to this list, modify special_rtx in gengenrtl.c as well. */
3275 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3276 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3278 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3279 basic_block bb
, rtx pattern
, int location
, int code
,
3281 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3282 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3283 extern void set_mode_and_regno (rtx
, machine_mode
, unsigned int);
3284 extern rtx
gen_raw_REG (machine_mode
, unsigned int);
3285 extern rtx
gen_rtx_REG (machine_mode
, unsigned int);
3286 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, int);
3287 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
3288 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
3289 enum var_init_status
);
3291 #ifdef GENERATOR_FILE
3292 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
3295 PUT_MODE (rtx x
, machine_mode mode
)
3298 set_mode_and_regno (x
, mode
, REGNO (x
));
3300 PUT_MODE_RAW (x
, mode
);
3304 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3306 /* Virtual registers are used during RTL generation to refer to locations into
3307 the stack frame when the actual location isn't known until RTL generation
3308 is complete. The routine instantiate_virtual_regs replaces these with
3309 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3312 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3314 /* This points to the first word of the incoming arguments passed on the stack,
3315 either by the caller or by the callee when pretending it was passed by the
3318 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3320 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3322 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3323 variable on the stack. Otherwise, it points to the first variable on
3326 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3328 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3330 /* This points to the location of dynamically-allocated memory on the stack
3331 immediately after the stack pointer has been adjusted by the amount
3334 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3336 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3338 /* This points to the location in the stack at which outgoing arguments should
3339 be written when the stack is pre-pushed (arguments pushed using push
3340 insns always use sp). */
3342 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3344 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3346 /* This points to the Canonical Frame Address of the function. This
3347 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3348 but is calculated relative to the arg pointer for simplicity; the
3349 frame pointer nor stack pointer are necessarily fixed relative to
3350 the CFA until after reload. */
3352 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3354 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3356 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3358 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3361 #define virtual_preferred_stack_boundary_rtx \
3362 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3364 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3365 ((FIRST_VIRTUAL_REGISTER) + 5)
3367 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3369 /* Nonzero if REGNUM is a pointer into the stack frame. */
3370 #define REGNO_PTR_FRAME_P(REGNUM) \
3371 ((REGNUM) == STACK_POINTER_REGNUM \
3372 || (REGNUM) == FRAME_POINTER_REGNUM \
3373 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3374 || (REGNUM) == ARG_POINTER_REGNUM \
3375 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3376 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3378 /* REGNUM never really appearing in the INSN stream. */
3379 #define INVALID_REGNUM (~(unsigned int) 0)
3381 /* REGNUM for which no debug information can be generated. */
3382 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3384 extern rtx
output_constant_def (tree
, int);
3385 extern rtx
lookup_constant_def (tree
);
3387 /* Nonzero after end of reload pass.
3388 Set to 1 or 0 by reload1.c. */
3390 extern int reload_completed
;
3392 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3393 extern int epilogue_completed
;
3395 /* Set to 1 while reload_as_needed is operating.
3396 Required by some machines to handle any generated moves differently. */
3398 extern int reload_in_progress
;
3400 /* Set to 1 while in lra. */
3401 extern int lra_in_progress
;
3403 /* This macro indicates whether you may create a new
3406 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3409 /* Nonzero after end of regstack pass.
3410 Set to 1 or 0 by reg-stack.c. */
3411 extern int regstack_completed
;
3414 /* If this is nonzero, we do not bother generating VOLATILE
3415 around volatile memory references, and we are willing to
3416 output indirect addresses. If cse is to follow, we reject
3417 indirect addresses so a useful potential cse is generated;
3418 if it is used only once, instruction combination will produce
3419 the same indirect address eventually. */
3420 extern int cse_not_expected
;
3422 /* Translates rtx code to tree code, for those codes needed by
3423 REAL_ARITHMETIC. The function returns an int because the caller may not
3424 know what `enum tree_code' means. */
3426 extern int rtx_to_tree_code (enum rtx_code
);
3429 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3430 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3431 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
3434 extern bool check_for_inc_dec (rtx_insn
*insn
);
3437 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3438 extern bool jump_to_label_p (const rtx_insn
*);
3439 extern int condjump_p (const rtx_insn
*);
3440 extern int any_condjump_p (const rtx_insn
*);
3441 extern int any_uncondjump_p (const rtx_insn
*);
3442 extern rtx
pc_set (const rtx_insn
*);
3443 extern rtx
condjump_label (const rtx_insn
*);
3444 extern int simplejump_p (const rtx_insn
*);
3445 extern int returnjump_p (const rtx_insn
*);
3446 extern int eh_returnjump_p (rtx_insn
*);
3447 extern int onlyjump_p (const rtx_insn
*);
3448 extern int only_sets_cc0_p (const_rtx
);
3449 extern int sets_cc0_p (const_rtx
);
3450 extern int invert_jump_1 (rtx_jump_insn
*, rtx
);
3451 extern int invert_jump (rtx_jump_insn
*, rtx
, int);
3452 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3453 extern int true_regnum (const_rtx
);
3454 extern unsigned int reg_or_subregno (const_rtx
);
3455 extern int redirect_jump_1 (rtx_insn
*, rtx
);
3456 extern void redirect_jump_2 (rtx_jump_insn
*, rtx
, rtx
, int, int);
3457 extern int redirect_jump (rtx_jump_insn
*, rtx
, int);
3458 extern void rebuild_jump_labels (rtx_insn
*);
3459 extern void rebuild_jump_labels_chain (rtx_insn
*);
3460 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
3461 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
3462 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3463 const_rtx
, const_rtx
);
3464 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3465 extern int condjump_in_parallel_p (const rtx_insn
*);
3467 /* In emit-rtl.c. */
3468 extern int max_reg_num (void);
3469 extern int max_label_num (void);
3470 extern int get_first_label_num (void);
3471 extern void maybe_set_first_label_num (rtx
);
3472 extern void delete_insns_since (rtx_insn
*);
3473 extern void mark_reg_pointer (rtx
, int);
3474 extern void mark_user_reg (rtx
);
3475 extern void reset_used_flags (rtx
);
3476 extern void set_used_flags (rtx
);
3477 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3478 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3479 extern int get_max_insn_count (void);
3480 extern int in_sequence_p (void);
3481 extern void init_emit (void);
3482 extern void init_emit_regs (void);
3483 extern void init_derived_machine_modes (void);
3484 extern void init_emit_once (void);
3485 extern void push_topmost_sequence (void);
3486 extern void pop_topmost_sequence (void);
3487 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3488 extern unsigned int unshare_all_rtl (void);
3489 extern void unshare_all_rtl_again (rtx_insn
*);
3490 extern void unshare_all_rtl_in_chain (rtx_insn
*);
3491 extern void verify_rtl_sharing (void);
3492 extern void add_insn (rtx_insn
*);
3493 extern void add_insn_before (rtx
, rtx
, basic_block
);
3494 extern void add_insn_after (rtx
, rtx
, basic_block
);
3495 extern void remove_insn (rtx
);
3496 extern rtx_insn
*emit (rtx
);
3497 extern void emit_insn_at_entry (rtx
);
3498 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
3499 extern rtx
gen_const_mem (machine_mode
, rtx
);
3500 extern rtx
gen_frame_mem (machine_mode
, rtx
);
3501 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
3502 extern bool validate_subreg (machine_mode
, machine_mode
,
3503 const_rtx
, unsigned int);
3506 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
3507 extern rtx
remove_death (unsigned int, rtx_insn
*);
3508 extern void dump_combine_stats (FILE *);
3509 extern void dump_combine_total_stats (FILE *);
3510 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3512 /* In sched-rgn.c. */
3513 extern void schedule_insns (void);
3515 /* In sched-ebb.c. */
3516 extern void schedule_ebbs (void);
3518 /* In sel-sched-dump.c. */
3519 extern void sel_sched_fix_param (const char *param
, const char *val
);
3521 /* In print-rtl.c */
3522 extern const char *print_rtx_head
;
3523 extern void debug (const rtx_def
&ref
);
3524 extern void debug (const rtx_def
*ptr
);
3525 extern void debug_rtx (const_rtx
);
3526 extern void debug_rtx_list (const rtx_insn
*, int);
3527 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3528 extern const_rtx
debug_rtx_find (const rtx_insn
*, int);
3529 extern void print_mem_expr (FILE *, const_tree
);
3530 extern void print_rtl (FILE *, const_rtx
);
3531 extern void print_simple_rtl (FILE *, const_rtx
);
3532 extern int print_rtl_single (FILE *, const_rtx
);
3533 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3534 extern void print_inline_rtx (FILE *, const_rtx
, int);
3536 /* Functions in sched-vis.c. FIXME: Ideally these functions would
3537 not be in sched-vis.c but in rtl.c, because they are not only used
3538 by the scheduler anymore but for all "slim" RTL dumping. */
3539 extern void dump_value_slim (FILE *, const_rtx
, int);
3540 extern void dump_insn_slim (FILE *, const rtx_insn
*);
3541 extern void dump_rtl_slim (FILE *, const rtx_insn
*, const rtx_insn
*,
3543 extern void print_value (pretty_printer
*, const_rtx
, int);
3544 extern void print_pattern (pretty_printer
*, const_rtx
, int);
3545 extern void print_insn (pretty_printer
*, const_rtx
, int);
3546 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
3547 extern const char *str_pattern_slim (const_rtx
);
3550 extern void expand_null_return (void);
3551 extern void expand_naked_return (void);
3552 extern void emit_jump (rtx
);
3555 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3557 extern HOST_WIDE_INT
find_args_size_adjust (rtx_insn
*);
3558 extern int fixup_args_size_notes (rtx_insn
*, rtx_insn
*, int);
3561 extern void init_expmed (void);
3562 extern void expand_inc (rtx
, rtx
);
3563 extern void expand_dec (rtx
, rtx
);
3565 /* In lower-subreg.c */
3566 extern void init_lower_subreg (void);
3569 extern bool can_copy_p (machine_mode
);
3570 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
3571 extern rtx
fis_get_condition (rtx_insn
*);
3575 extern HARD_REG_SET eliminable_regset
;
3577 extern void mark_elimination (int, int);
3580 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3581 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3582 extern void globalize_reg (tree
, int);
3583 extern void init_reg_modes_target (void);
3584 extern void init_regs (void);
3585 extern void reinit_regs (void);
3586 extern void init_fake_stack_mems (void);
3587 extern void save_register_info (void);
3588 extern void init_reg_sets (void);
3589 extern void regclass (rtx
, int);
3590 extern void reg_scan (rtx_insn
*, unsigned int);
3591 extern void fix_register (const char *, int, int);
3593 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
3597 extern int function_invariant_p (const_rtx
);
3607 LCT_RETURNS_TWICE
= 5
3610 extern void emit_library_call (rtx
, enum libcall_type
, machine_mode
, int,
3612 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
3613 machine_mode
, int, ...);
3616 extern void init_varasm_once (void);
3618 extern rtx
make_debug_expr_from_rtl (const_rtx
);
3621 extern bool read_rtx (const char *, rtx
*);
3624 extern rtx
canon_rtx (rtx
);
3625 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
3626 extern rtx
get_addr (rtx
);
3627 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
3629 extern int read_dependence (const_rtx
, const_rtx
);
3630 extern int anti_dependence (const_rtx
, const_rtx
);
3631 extern int canon_anti_dependence (const_rtx
, bool,
3632 const_rtx
, machine_mode
, rtx
);
3633 extern int output_dependence (const_rtx
, const_rtx
);
3634 extern int may_alias_p (const_rtx
, const_rtx
);
3635 extern void init_alias_target (void);
3636 extern void init_alias_analysis (void);
3637 extern void end_alias_analysis (void);
3638 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
3639 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
3640 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
3641 extern bool may_be_sp_based_p (rtx
);
3642 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
3643 extern rtx
get_reg_known_value (unsigned int);
3644 extern bool get_reg_known_equiv_p (unsigned int);
3645 extern rtx
get_reg_base_value (unsigned int);
3648 extern int stack_regs_mentioned (const_rtx insn
);
3652 extern GTY(()) rtx stack_limit_rtx
;
3654 /* In var-tracking.c */
3655 extern unsigned int variable_tracking_main (void);
3657 /* In stor-layout.c. */
3658 extern void get_mode_bounds (machine_mode
, int, machine_mode
,
3662 extern rtx
canon_condition (rtx
);
3663 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
3666 extern unsigned int compute_alignments (void);
3667 extern void update_alignments (vec
<rtx
> &);
3668 extern int asm_str_count (const char *templ
);
3672 rtx (*gen_lowpart
) (machine_mode
, rtx
);
3673 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
3674 rtx (*reg_nonzero_bits
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3675 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
3676 rtx (*reg_num_sign_bit_copies
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3677 unsigned int, unsigned int *);
3678 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
3680 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3683 /* Each pass can provide its own. */
3684 extern struct rtl_hooks rtl_hooks
;
3686 /* ... but then it has to restore these. */
3687 extern const struct rtl_hooks general_rtl_hooks
;
3689 /* Keep this for the nonce. */
3690 #define gen_lowpart rtl_hooks.gen_lowpart
3692 extern void insn_locations_init (void);
3693 extern void insn_locations_finalize (void);
3694 extern void set_curr_insn_location (location_t
);
3695 extern location_t
curr_insn_location (void);
3698 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
3700 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
3703 #define fatal_insn(msgid, insn) \
3704 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3705 #define fatal_insn_not_found(insn) \
3706 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3709 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
3711 #endif /* ! GCC_RTL_H */