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 #include "statistics.h"
35 #include "hash-table.h"
39 #endif /* GENERATOR_FILE */
44 /* Value used by some passes to "recognize" noop moves as valid
46 #define NOOP_MOVE_INSN_CODE INT_MAX
48 /* Register Transfer Language EXPRESSIONS CODES */
50 #define RTX_CODE enum rtx_code
53 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
54 #include "rtl.def" /* rtl expressions are documented here */
57 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
59 Assumes default enum value assignment. */
61 /* The cast here, saves many elsewhere. */
62 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
64 /* Similar, but since generator files get more entries... */
66 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
69 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
72 /* We check bit 0-1 of some rtx class codes in the predicates below. */
74 /* Bit 0 = comparison if 0, arithmetic is 1
75 Bit 1 = 1 if commutative. */
81 /* Must follow the four preceding values. */
88 /* Bit 0 = 1 if constant. */
97 #define RTX_OBJ_MASK (~1)
98 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
99 #define RTX_COMPARE_MASK (~1)
100 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
101 #define RTX_ARITHMETIC_MASK (~1)
102 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
103 #define RTX_BINARY_MASK (~3)
104 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
105 #define RTX_COMMUTATIVE_MASK (~2)
106 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
107 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
109 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
110 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
112 extern const char * const rtx_name
[NUM_RTX_CODE
];
113 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
115 extern const char * const rtx_format
[NUM_RTX_CODE
];
116 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
118 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
119 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
121 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
122 and NEXT_INSN fields). */
123 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
125 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
126 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
128 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
129 relative to which the offsets are calculated, as explained in rtl.def. */
130 struct addr_diff_vec_flags
132 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
133 unsigned min_align
: 8;
135 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
136 unsigned min_after_vec
: 1; /* minimum address target label is
137 after the ADDR_DIFF_VEC. */
138 unsigned max_after_vec
: 1; /* maximum address target label is
139 after the ADDR_DIFF_VEC. */
140 unsigned min_after_base
: 1; /* minimum address target label is
142 unsigned max_after_base
: 1; /* maximum address target label is
144 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
145 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
150 /* Structure used to describe the attributes of a MEM. These are hashed
151 so MEMs that the same attributes share a data structure. This means
152 they cannot be modified in place. */
153 struct GTY(()) mem_attrs
155 /* The expression that the MEM accesses, or null if not known.
156 This expression might be larger than the memory reference itself.
157 (In other words, the MEM might access only part of the object.) */
160 /* The offset of the memory reference from the start of EXPR.
161 Only valid if OFFSET_KNOWN_P. */
162 HOST_WIDE_INT offset
;
164 /* The size of the memory reference in bytes. Only valid if
168 /* The alias set of the memory reference. */
169 alias_set_type alias
;
171 /* The alignment of the reference in bits. Always a multiple of
172 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
173 than the memory reference itself. */
176 /* The address space that the memory reference uses. */
177 unsigned char addrspace
;
179 /* True if OFFSET is known. */
182 /* True if SIZE is known. */
186 /* Structure used to describe the attributes of a REG in similar way as
187 mem_attrs does for MEM above. Note that the OFFSET field is calculated
188 in the same way as for mem_attrs, rather than in the same way as a
189 SUBREG_BYTE. For example, if a big-endian target stores a byte
190 object in the low part of a 4-byte register, the OFFSET field
191 will be -3 rather than 0. */
193 struct GTY((for_user
)) reg_attrs
{
194 tree decl
; /* decl corresponding to REG. */
195 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
198 /* Common union for an element of an rtx. */
203 unsigned int rt_uint
;
207 machine_mode rt_type
;
208 addr_diff_vec_flags rt_addr_diff_vec_flags
;
209 struct cselib_val
*rt_cselib
;
213 struct constant_descriptor_rtx
*rt_constant
;
214 struct dw_cfi_node
*rt_cfi
;
217 /* Describes the properties of a REG. */
218 struct GTY(()) reg_info
{
219 /* The value of REGNO. */
222 /* The value of REG_NREGS. */
223 unsigned int nregs
: 8;
224 unsigned int unused
: 24;
226 /* The value of REG_ATTRS. */
230 /* This structure remembers the position of a SYMBOL_REF within an
231 object_block structure. A SYMBOL_REF only provides this information
232 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
233 struct GTY(()) block_symbol
{
234 /* The usual SYMBOL_REF fields. */
235 rtunion
GTY ((skip
)) fld
[2];
237 /* The block that contains this object. */
238 struct object_block
*block
;
240 /* The offset of this object from the start of its block. It is negative
241 if the symbol has not yet been assigned an offset. */
242 HOST_WIDE_INT offset
;
245 /* Describes a group of objects that are to be placed together in such
246 a way that their relative positions are known. */
247 struct GTY((for_user
)) object_block
{
248 /* The section in which these objects should be placed. */
251 /* The alignment of the first object, measured in bits. */
252 unsigned int alignment
;
254 /* The total size of the objects, measured in bytes. */
257 /* The SYMBOL_REFs for each object. The vector is sorted in
258 order of increasing offset and the following conditions will
259 hold for each element X:
261 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
262 !SYMBOL_REF_ANCHOR_P (X)
263 SYMBOL_REF_BLOCK (X) == [address of this structure]
264 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
265 vec
<rtx
, va_gc
> *objects
;
267 /* All the anchor SYMBOL_REFs used to address these objects, sorted
268 in order of increasing offset, and then increasing TLS model.
269 The following conditions will hold for each element X in this vector:
271 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
272 SYMBOL_REF_ANCHOR_P (X)
273 SYMBOL_REF_BLOCK (X) == [address of this structure]
274 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
275 vec
<rtx
, va_gc
> *anchors
;
278 struct GTY((variable_size
)) hwivec_def
{
279 HOST_WIDE_INT elem
[1];
282 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
283 #define CWI_GET_NUM_ELEM(RTX) \
284 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
285 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
286 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
288 /* RTL expression ("rtx"). */
290 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
291 field for for gengtype to recognize that inheritance is occurring,
292 so that all subclasses are redirected to the traversal hook for the
294 However, all of the fields are in the base class, and special-casing
295 is at work. Hence we use desc and tag of 0, generating a switch
296 statement of the form:
299 case 0: // all the work happens here
301 in order to work with the existing special-casing in gengtype. */
303 struct GTY((desc("0"), tag("0"),
304 chain_next ("RTX_NEXT (&%h)"),
305 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
306 /* The kind of expression this is. */
307 ENUM_BITFIELD(rtx_code
) code
: 16;
309 /* The kind of value the expression has. */
310 ENUM_BITFIELD(machine_mode
) mode
: 8;
312 /* 1 in a MEM if we should keep the alias set for this mem unchanged
313 when we access a component.
314 1 in a JUMP_INSN if it is a crossing jump.
315 1 in a CALL_INSN if it is a sibling call.
316 1 in a SET that is for a return.
317 In a CODE_LABEL, part of the two-bit alternate entry field.
318 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
319 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
320 1 in a SUBREG generated by LRA for reload insns.
321 1 in a CALL for calls instrumented by Pointer Bounds Checker. */
322 unsigned int jump
: 1;
323 /* In a CODE_LABEL, part of the two-bit alternate entry field.
324 1 in a MEM if it cannot trap.
325 1 in a CALL_INSN logically equivalent to
326 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
327 unsigned int call
: 1;
328 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
329 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
330 1 in a SYMBOL_REF if it addresses something in the per-function
332 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
333 1 in a NOTE, or EXPR_LIST for a const call.
334 1 in a JUMP_INSN of an annulling branch.
335 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
336 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
337 1 in a clobber temporarily created for LRA. */
338 unsigned int unchanging
: 1;
339 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
340 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
341 if it has been deleted.
342 1 in a REG expression if corresponds to a variable declared by the user,
343 0 for an internally generated temporary.
344 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
345 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
347 In a SYMBOL_REF, this flag is used for machine-specific purposes.
348 In a PREFETCH, this flag indicates that it should be considered a scheduling
350 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
351 unsigned int volatil
: 1;
352 /* 1 in a REG if the register is used only in exit code a loop.
353 1 in a SUBREG expression if was generated from a variable with a
355 1 in a CODE_LABEL if the label is used for nonlocal gotos
356 and must not be deleted even if its count is zero.
357 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
358 together with the preceding insn. Valid only within sched.
359 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
360 from the target of a branch. Valid from reorg until end of compilation;
363 The name of the field is historical. It used to be used in MEMs
364 to record whether the MEM accessed part of a structure. */
365 unsigned int in_struct
: 1;
366 /* At the end of RTL generation, 1 if this rtx is used. This is used for
367 copying shared structure. See `unshare_all_rtl'.
368 In a REG, this is not needed for that purpose, and used instead
369 in `leaf_renumber_regs_insn'.
370 1 in a SYMBOL_REF, means that emit_library_call
371 has used it as the function.
372 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
373 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
374 unsigned int used
: 1;
375 /* 1 in an INSN or a SET if this rtx is related to the call frame,
376 either changing how we compute the frame address or saving and
377 restoring registers in the prologue and epilogue.
378 1 in a REG or MEM if it is a pointer.
379 1 in a SYMBOL_REF if it addresses something in the per-function
380 constant string pool.
381 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
382 unsigned frame_related
: 1;
383 /* 1 in a REG or PARALLEL that is the current function's return value.
384 1 in a SYMBOL_REF for a weak symbol.
385 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
386 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
387 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
388 unsigned return_val
: 1;
391 /* The final union field is aligned to 64 bits on LP64 hosts,
392 giving a 32-bit gap after the fields above. We optimize the
393 layout for that case and use the gap for extra code-specific
396 /* The ORIGINAL_REGNO of a REG. */
397 unsigned int original_regno
;
399 /* The INSN_UID of an RTX_INSN-class code. */
402 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
403 unsigned int symbol_ref_flags
;
405 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
406 enum var_init_status var_location_status
;
408 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
409 HOST_WIDE_INTs in the hwivec_def. */
410 unsigned int num_elem
;
413 /* The first element of the operands of this rtx.
414 The number of operands and their types are controlled
415 by the `code' field, according to rtl.def. */
418 HOST_WIDE_INT hwint
[1];
420 struct block_symbol block_sym
;
421 struct real_value rv
;
422 struct fixed_value fv
;
423 struct hwivec_def hwiv
;
424 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
427 /* A node for constructing singly-linked lists of rtx. */
429 class GTY(()) rtx_expr_list
: public rtx_def
431 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
434 /* Get next in list. */
435 rtx_expr_list
*next () const;
437 /* Get at the underlying rtx. */
438 rtx
element () const;
444 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
446 return rt
->code
== EXPR_LIST
;
449 class GTY(()) rtx_insn_list
: public rtx_def
451 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
453 This is an instance of:
455 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
457 i.e. a node for constructing singly-linked lists of rtx_insn *, where
458 the list is "external" to the insn (as opposed to the doubly-linked
459 list embedded within rtx_insn itself). */
462 /* Get next in list. */
463 rtx_insn_list
*next () const;
465 /* Get at the underlying instruction. */
466 rtx_insn
*insn () const;
473 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
475 return rt
->code
== INSN_LIST
;
478 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
479 typically (but not always) of rtx_insn *, used in the late passes. */
481 class GTY(()) rtx_sequence
: public rtx_def
483 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
486 /* Get number of elements in sequence. */
489 /* Get i-th element of the sequence. */
490 rtx
element (int index
) const;
492 /* Get i-th element of the sequence, with a checked cast to
494 rtx_insn
*insn (int index
) const;
500 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
502 return rt
->code
== SEQUENCE
;
508 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
510 return rt
->code
== SEQUENCE
;
513 class GTY(()) rtx_insn
: public rtx_def
516 /* No extra fields, but adds the invariant:
520 || JUMP_TABLE_DATA_P (X)
524 i.e. that we must be able to use the following:
528 i.e. we have an rtx that has an INSN_UID field and can be part of
529 a linked list of insns.
532 /* Returns true if this insn has been deleted. */
534 bool deleted () const { return volatil
; }
536 /* Mark this insn as deleted. */
538 void set_deleted () { volatil
= true; }
540 /* Mark this insn as not deleted. */
542 void set_undeleted () { volatil
= false; }
545 /* Subclasses of rtx_insn. */
547 class GTY(()) rtx_debug_insn
: public rtx_insn
549 /* No extra fields, but adds the invariant:
550 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
551 i.e. an annotation for tracking variable assignments.
553 This is an instance of:
554 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
558 class GTY(()) rtx_nonjump_insn
: public rtx_insn
560 /* No extra fields, but adds the invariant:
561 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
562 i.e an instruction that cannot jump.
564 This is an instance of:
565 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
569 class GTY(()) rtx_jump_insn
: public rtx_insn
572 /* No extra fields, but adds the invariant:
573 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
574 i.e. an instruction that can possibly jump.
576 This is an instance of:
577 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
580 /* Returns jump target of this instruction. The returned value is not
581 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
582 expression. Also, when the code label is marked "deleted", it is
583 replaced by a NOTE. In some cases the value is NULL_RTX. */
585 inline rtx
jump_label () const;
587 /* Returns jump target cast to rtx_code_label *. */
589 inline rtx_code_label
*jump_target () const;
591 /* Set jump target. */
593 inline void set_jump_target (rtx_code_label
*);
596 class GTY(()) rtx_call_insn
: public rtx_insn
598 /* No extra fields, but adds the invariant:
599 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
600 i.e. an instruction that can possibly call a subroutine
601 but which will not change which instruction comes next
602 in the current function.
604 This is an instance of:
605 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
609 class GTY(()) rtx_jump_table_data
: public rtx_insn
611 /* No extra fields, but adds the invariant:
612 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
613 i.e. a data for a jump table, considered an instruction for
616 This is an instance of:
617 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
622 /* This can be either:
624 (a) a table of absolute jumps, in which case PATTERN (this) is an
625 ADDR_VEC with arg 0 a vector of labels, or
627 (b) a table of relative jumps (e.g. for -fPIC), in which case
628 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
629 arg 1 the vector of labels.
631 This method gets the underlying vec. */
633 inline rtvec
get_labels () const;
636 class GTY(()) rtx_barrier
: public rtx_insn
638 /* No extra fields, but adds the invariant:
639 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
640 i.e. a marker that indicates that control will not flow through.
642 This is an instance of:
643 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
647 class GTY(()) rtx_code_label
: public rtx_insn
649 /* No extra fields, but adds the invariant:
650 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
651 i.e. a label in the assembler.
653 This is an instance of:
654 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
658 class GTY(()) rtx_note
: public rtx_insn
660 /* No extra fields, but adds the invariant:
661 NOTE_P(X) aka (GET_CODE (X) == NOTE)
662 i.e. a note about the corresponding source code.
664 This is an instance of:
665 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
669 /* The size in bytes of an rtx header (code, mode and flags). */
670 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
672 /* The size in bytes of an rtx with code CODE. */
673 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
675 #define NULL_RTX (rtx) 0
677 /* The "next" and "previous" RTX, relative to this one. */
679 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
680 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
682 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
684 #define RTX_PREV(X) ((INSN_P (X) \
686 || JUMP_TABLE_DATA_P (X) \
689 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
690 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
691 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
693 /* Define macros to access the `code' field of the rtx. */
695 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
696 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
698 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
699 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
701 /* RTL vector. These appear inside RTX's when there is a need
702 for a variable number of things. The principle use is inside
703 PARALLEL expressions. */
705 struct GTY(()) rtvec_def
{
706 int num_elem
; /* number of elements */
707 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
710 #define NULL_RTVEC (rtvec) 0
712 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
713 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
715 /* Predicate yielding nonzero iff X is an rtx for a register. */
716 #define REG_P(X) (GET_CODE (X) == REG)
718 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
719 #define MEM_P(X) (GET_CODE (X) == MEM)
721 #if TARGET_SUPPORTS_WIDE_INT
723 /* Match CONST_*s that can represent compile-time constant integers. */
724 #define CASE_CONST_SCALAR_INT \
728 /* Match CONST_*s for which pointer equality corresponds to value
730 #define CASE_CONST_UNIQUE \
732 case CONST_WIDE_INT: \
736 /* Match all CONST_* rtxes. */
737 #define CASE_CONST_ANY \
739 case CONST_WIDE_INT: \
746 /* Match CONST_*s that can represent compile-time constant integers. */
747 #define CASE_CONST_SCALAR_INT \
751 /* Match CONST_*s for which pointer equality corresponds to value
753 #define CASE_CONST_UNIQUE \
758 /* Match all CONST_* rtxes. */
759 #define CASE_CONST_ANY \
766 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
767 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
769 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
770 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
772 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
773 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
775 /* Predicate yielding true iff X is an rtx for a double-int
776 or floating point constant. */
777 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
779 /* Predicate yielding true iff X is an rtx for a double-int. */
780 #define CONST_DOUBLE_AS_INT_P(X) \
781 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
783 /* Predicate yielding true iff X is an rtx for a integer const. */
784 #if TARGET_SUPPORTS_WIDE_INT
785 #define CONST_SCALAR_INT_P(X) \
786 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
788 #define CONST_SCALAR_INT_P(X) \
789 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
792 /* Predicate yielding true iff X is an rtx for a double-int. */
793 #define CONST_DOUBLE_AS_FLOAT_P(X) \
794 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
796 /* Predicate yielding nonzero iff X is a label insn. */
797 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
799 /* Predicate yielding nonzero iff X is a jump insn. */
800 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
802 /* Predicate yielding nonzero iff X is a call insn. */
803 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
805 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
806 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
808 /* Predicate yielding nonzero iff X is a debug note/insn. */
809 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
811 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
812 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
814 /* Nonzero if DEBUG_INSN_P may possibly hold. */
815 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
817 /* Predicate yielding nonzero iff X is a real insn. */
819 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
821 /* Predicate yielding nonzero iff X is a note insn. */
822 #define NOTE_P(X) (GET_CODE (X) == NOTE)
824 /* Predicate yielding nonzero iff X is a barrier insn. */
825 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
827 /* Predicate yielding nonzero iff X is a data for a jump table. */
828 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
830 /* Predicate yielding nonzero iff RTX is a subreg. */
831 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
836 is_a_helper
<rtx_insn
*>::test (rtx rt
)
840 || JUMP_TABLE_DATA_P (rt
)
848 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
852 || JUMP_TABLE_DATA_P (rt
)
860 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
862 return DEBUG_INSN_P (rt
);
868 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
870 return NONJUMP_INSN_P (rt
);
876 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
884 is_a_helper
<rtx_jump_insn
*>::test (rtx_insn
*insn
)
886 return JUMP_P (insn
);
892 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
900 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
902 return CALL_P (insn
);
908 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
910 return JUMP_TABLE_DATA_P (rt
);
916 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
918 return JUMP_TABLE_DATA_P (insn
);
924 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
926 return BARRIER_P (rt
);
932 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
940 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
942 return LABEL_P (insn
);
948 is_a_helper
<rtx_note
*>::test (rtx rt
)
956 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
958 return NOTE_P (insn
);
961 /* Predicate yielding nonzero iff X is a return or simple_return. */
962 #define ANY_RETURN_P(X) \
963 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
965 /* 1 if X is a unary operator. */
968 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
970 /* 1 if X is a binary operator. */
972 #define BINARY_P(X) \
973 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
975 /* 1 if X is an arithmetic operator. */
977 #define ARITHMETIC_P(X) \
978 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
979 == RTX_ARITHMETIC_RESULT)
981 /* 1 if X is an arithmetic operator. */
983 #define COMMUTATIVE_ARITH_P(X) \
984 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
986 /* 1 if X is a commutative arithmetic operator or a comparison operator.
987 These two are sometimes selected together because it is possible to
988 swap the two operands. */
990 #define SWAPPABLE_OPERANDS_P(X) \
991 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
992 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
993 | (1 << RTX_COMPARE)))
995 /* 1 if X is a non-commutative operator. */
997 #define NON_COMMUTATIVE_P(X) \
998 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
999 == RTX_NON_COMMUTATIVE_RESULT)
1001 /* 1 if X is a commutative operator on integers. */
1003 #define COMMUTATIVE_P(X) \
1004 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1005 == RTX_COMMUTATIVE_RESULT)
1007 /* 1 if X is a relational operator. */
1009 #define COMPARISON_P(X) \
1010 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1012 /* 1 if X is a constant value that is an integer. */
1014 #define CONSTANT_P(X) \
1015 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1017 /* 1 if X can be used to represent an object. */
1018 #define OBJECT_P(X) \
1019 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1021 /* General accessor macros for accessing the fields of an rtx. */
1023 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1024 /* The bit with a star outside the statement expr and an & inside is
1025 so that N can be evaluated only once. */
1026 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1027 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1028 const enum rtx_code _code = GET_CODE (_rtx); \
1029 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1030 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1032 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1033 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1035 &_rtx->u.fld[_n]; }))
1037 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1038 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1039 const enum rtx_code _code = GET_CODE (_rtx); \
1040 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1041 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1043 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1044 && GET_RTX_FORMAT (_code)[_n] != C2) \
1045 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1047 &_rtx->u.fld[_n]; }))
1049 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1050 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1051 if (GET_CODE (_rtx) != (C)) \
1052 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1054 &_rtx->u.fld[_n]; }))
1056 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1057 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1058 const enum rtx_code _code = GET_CODE (_rtx); \
1059 if (_code != (C1) && _code != (C2)) \
1060 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1062 &_rtx->u.fld[_n]; }))
1064 #define RTVEC_ELT(RTVEC, I) __extension__ \
1065 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1066 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1067 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1069 &_rtvec->elem[_i]; }))
1071 #define XWINT(RTX, N) __extension__ \
1072 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1073 const enum rtx_code _code = GET_CODE (_rtx); \
1074 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1075 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1077 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1078 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1080 &_rtx->u.hwint[_n]; }))
1082 #define CWI_ELT(RTX, I) __extension__ \
1083 (*({ __typeof (RTX) const _cwi = (RTX); \
1084 int _max = CWI_GET_NUM_ELEM (_cwi); \
1085 const int _i = (I); \
1086 if (_i < 0 || _i >= _max) \
1087 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1089 &_cwi->u.hwiv.elem[_i]; }))
1091 #define XCWINT(RTX, N, C) __extension__ \
1092 (*({ __typeof (RTX) const _rtx = (RTX); \
1093 if (GET_CODE (_rtx) != (C)) \
1094 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1096 &_rtx->u.hwint[N]; }))
1098 #define XCMWINT(RTX, N, C, M) __extension__ \
1099 (*({ __typeof (RTX) const _rtx = (RTX); \
1100 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1101 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1102 __LINE__, __FUNCTION__); \
1103 &_rtx->u.hwint[N]; }))
1105 #define XCNMPRV(RTX, C, M) __extension__ \
1106 ({ __typeof (RTX) const _rtx = (RTX); \
1107 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1108 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1109 __LINE__, __FUNCTION__); \
1112 #define XCNMPFV(RTX, C, M) __extension__ \
1113 ({ __typeof (RTX) const _rtx = (RTX); \
1114 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1115 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1116 __LINE__, __FUNCTION__); \
1119 #define REG_CHECK(RTX) __extension__ \
1120 ({ __typeof (RTX) const _rtx = (RTX); \
1121 if (GET_CODE (_rtx) != REG) \
1122 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1126 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1127 ({ __typeof (RTX) const _symbol = (RTX); \
1128 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1129 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1130 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1132 &_symbol->u.block_sym; })
1134 #define HWIVEC_CHECK(RTX,C) __extension__ \
1135 ({ __typeof (RTX) const _symbol = (RTX); \
1136 RTL_CHECKC1 (_symbol, 0, C); \
1137 &_symbol->u.hwiv; })
1139 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1142 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1145 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1148 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1151 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1152 const char *, int, const char *)
1154 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1155 bool, const char *, int, const char *)
1157 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1159 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1162 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1166 #else /* not ENABLE_RTL_CHECKING */
1168 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1169 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1170 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1171 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1172 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1173 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1174 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1175 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1176 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1177 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1178 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1179 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1180 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1181 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1182 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1186 /* General accessor macros for accessing the flags of an rtx. */
1188 /* Access an individual rtx flag, with no checking of any kind. */
1189 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1191 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1192 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1193 ({ __typeof (RTX) const _rtx = (RTX); \
1194 if (GET_CODE (_rtx) != C1) \
1195 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1199 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1200 ({ __typeof (RTX) const _rtx = (RTX); \
1201 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1202 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1206 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1207 ({ __typeof (RTX) const _rtx = (RTX); \
1208 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1209 && GET_CODE (_rtx) != C3) \
1210 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1214 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1215 ({ __typeof (RTX) const _rtx = (RTX); \
1216 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1217 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1218 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1222 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1223 ({ __typeof (RTX) const _rtx = (RTX); \
1224 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1225 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1226 && GET_CODE (_rtx) != C5) \
1227 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1231 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1233 ({ __typeof (RTX) const _rtx = (RTX); \
1234 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1235 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1236 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1237 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1241 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1243 ({ __typeof (RTX) const _rtx = (RTX); \
1244 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1245 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1246 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1247 && GET_CODE (_rtx) != C7) \
1248 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1252 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1254 ({ __typeof (RTX) const _rtx = (RTX); \
1255 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1256 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1260 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1265 #else /* not ENABLE_RTL_FLAG_CHECKING */
1267 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1268 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1269 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1270 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1271 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1272 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1273 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1274 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1277 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1278 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1279 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1280 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1281 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1282 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1283 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1284 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1285 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1286 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1288 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1289 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1291 /* These are like XINT, etc. except that they expect a '0' field instead
1292 of the normal type code. */
1294 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1295 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1296 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1297 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1298 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1299 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1300 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1301 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1302 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1303 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1304 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1305 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1307 /* Access a '0' field with any type. */
1308 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1310 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1311 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1312 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1313 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1314 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1315 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1316 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1317 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1318 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1319 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1321 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1322 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1324 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1327 /* Methods of rtx_expr_list. */
1329 inline rtx_expr_list
*rtx_expr_list::next () const
1331 rtx tmp
= XEXP (this, 1);
1332 return safe_as_a
<rtx_expr_list
*> (tmp
);
1335 inline rtx
rtx_expr_list::element () const
1337 return XEXP (this, 0);
1340 /* Methods of rtx_insn_list. */
1342 inline rtx_insn_list
*rtx_insn_list::next () const
1344 rtx tmp
= XEXP (this, 1);
1345 return safe_as_a
<rtx_insn_list
*> (tmp
);
1348 inline rtx_insn
*rtx_insn_list::insn () const
1350 rtx tmp
= XEXP (this, 0);
1351 return safe_as_a
<rtx_insn
*> (tmp
);
1354 /* Methods of rtx_sequence. */
1356 inline int rtx_sequence::len () const
1358 return XVECLEN (this, 0);
1361 inline rtx
rtx_sequence::element (int index
) const
1363 return XVECEXP (this, 0, index
);
1366 inline rtx_insn
*rtx_sequence::insn (int index
) const
1368 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1371 /* ACCESS MACROS for particular fields of insns. */
1373 /* Holds a unique number for each insn.
1374 These are not necessarily sequentially increasing. */
1375 inline int INSN_UID (const_rtx insn
)
1377 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1378 (insn
))->u2
.insn_uid
;
1380 inline int& INSN_UID (rtx insn
)
1382 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1383 (insn
))->u2
.insn_uid
;
1386 /* Chain insns together in sequence. */
1388 /* For now these are split in two: an rvalue form:
1391 SET_NEXT_INSN/SET_PREV_INSN. */
1393 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1395 rtx prev
= XEXP (insn
, 0);
1396 return safe_as_a
<rtx_insn
*> (prev
);
1399 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1401 return XEXP (insn
, 0);
1404 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1406 rtx next
= XEXP (insn
, 1);
1407 return safe_as_a
<rtx_insn
*> (next
);
1410 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1412 return XEXP (insn
, 1);
1415 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1417 return XBBDEF (insn
, 2);
1420 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1422 return XBBDEF (insn
, 2);
1425 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1427 BLOCK_FOR_INSN (insn
) = bb
;
1430 /* The body of an insn. */
1431 inline rtx
PATTERN (const_rtx insn
)
1433 return XEXP (insn
, 3);
1436 inline rtx
& PATTERN (rtx insn
)
1438 return XEXP (insn
, 3);
1441 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1443 return XUINT (insn
, 4);
1446 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1448 return XUINT (insn
, 4);
1451 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1453 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1456 /* LOCATION of an RTX if relevant. */
1457 #define RTL_LOCATION(X) (INSN_P (X) ? \
1458 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1461 /* Code number of instruction, from when it was recognized.
1462 -1 means this instruction has not been recognized yet. */
1463 #define INSN_CODE(INSN) XINT (INSN, 5)
1465 inline rtvec
rtx_jump_table_data::get_labels () const
1467 rtx pat
= PATTERN (this);
1468 if (GET_CODE (pat
) == ADDR_VEC
)
1469 return XVEC (pat
, 0);
1471 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1474 #define RTX_FRAME_RELATED_P(RTX) \
1475 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1476 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1478 /* 1 if JUMP RTX is a crossing jump. */
1479 #define CROSSING_JUMP_P(RTX) \
1480 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1482 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1484 #define RTL_CONST_CALL_P(RTX) \
1485 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1487 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1489 #define RTL_PURE_CALL_P(RTX) \
1490 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1492 /* 1 if RTX is a call to a const or pure function. */
1493 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1494 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1496 /* 1 if RTX is a call to a looping const or pure function. Built from
1497 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1498 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1499 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1501 /* 1 if RTX is a call_insn for a sibling call. */
1502 #define SIBLING_CALL_P(RTX) \
1503 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1505 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1506 #define INSN_ANNULLED_BRANCH_P(RTX) \
1507 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1509 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1510 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1511 executed if the branch is taken. For annulled branches with this bit
1512 clear, the insn should be executed only if the branch is not taken. */
1513 #define INSN_FROM_TARGET_P(RTX) \
1514 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1515 CALL_INSN)->in_struct)
1517 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1518 See the comments for ADDR_DIFF_VEC in rtl.def. */
1519 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1521 /* In a VALUE, the value cselib has assigned to RTX.
1522 This is a "struct cselib_val", see cselib.h. */
1523 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1525 /* Holds a list of notes on what this insn does to various REGs.
1526 It is a chain of EXPR_LIST rtx's, where the second operand is the
1527 chain pointer and the first operand is the REG being described.
1528 The mode field of the EXPR_LIST contains not a real machine mode
1529 but a value from enum reg_note. */
1530 #define REG_NOTES(INSN) XEXP(INSN, 6)
1532 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1534 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1538 #define DEF_REG_NOTE(NAME) NAME,
1539 #include "reg-notes.def"
1544 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1545 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1546 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1547 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1549 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1551 extern const char * const reg_note_name
[];
1552 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1554 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1555 USE and CLOBBER expressions.
1556 USE expressions list the registers filled with arguments that
1557 are passed to the function.
1558 CLOBBER expressions document the registers explicitly clobbered
1560 Pseudo registers can not be mentioned in this list. */
1561 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1563 /* The label-number of a code-label. The assembler label
1564 is made from `L' and the label-number printed in decimal.
1565 Label numbers are unique in a compilation. */
1566 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1568 /* In a NOTE that is a line number, this is a string for the file name that the
1569 line is in. We use the same field to record block numbers temporarily in
1570 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1571 between ints and pointers if we use a different macro for the block number.)
1575 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1576 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1577 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1578 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1579 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1580 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1581 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1582 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1583 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1585 /* In a NOTE that is a line number, this is the line number.
1586 Other kinds of NOTEs are identified by negative numbers here. */
1587 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1589 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1590 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1591 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1593 /* Variable declaration and the location of a variable. */
1594 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1595 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1597 /* Initialization status of the variable in the location. Status
1598 can be unknown, uninitialized or initialized. See enumeration
1600 #define PAT_VAR_LOCATION_STATUS(PAT) \
1601 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1602 ->u2.var_location_status)
1604 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1605 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1606 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1607 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1608 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1609 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1610 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1612 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1613 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1615 /* Accessors for a tree-expanded var location debug insn. */
1616 #define INSN_VAR_LOCATION_DECL(INSN) \
1617 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1618 #define INSN_VAR_LOCATION_LOC(INSN) \
1619 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1620 #define INSN_VAR_LOCATION_STATUS(INSN) \
1621 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1623 /* Expand to the RTL that denotes an unknown variable location in a
1625 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1627 /* Determine whether X is such an unknown location. */
1628 #define VAR_LOC_UNKNOWN_P(X) \
1629 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1631 /* 1 if RTX is emitted after a call, but it should take effect before
1632 the call returns. */
1633 #define NOTE_DURING_CALL_P(RTX) \
1634 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1636 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1637 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1639 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1640 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1642 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1643 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1645 /* Codes that appear in the NOTE_KIND field for kinds of notes
1646 that are not line numbers. These codes are all negative.
1648 Notice that we do not try to use zero here for any of
1649 the special note codes because sometimes the source line
1650 actually can be zero! This happens (for example) when we
1651 are generating code for the per-translation-unit constructor
1652 and destructor routines for some C++ translation unit. */
1656 #define DEF_INSN_NOTE(NAME) NAME,
1657 #include "insn-notes.def"
1658 #undef DEF_INSN_NOTE
1663 /* Names for NOTE insn's other than line numbers. */
1665 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1666 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1667 (note_insn_name[(NOTE_CODE)])
1669 /* The name of a label, in case it corresponds to an explicit label
1670 in the input source code. */
1671 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1673 /* In jump.c, each label contains a count of the number
1674 of LABEL_REFs that point at it, so unused labels can be deleted. */
1675 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1677 /* Labels carry a two-bit field composed of the ->jump and ->call
1678 bits. This field indicates whether the label is an alternate
1679 entry point, and if so, what kind. */
1682 LABEL_NORMAL
= 0, /* ordinary label */
1683 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1684 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1685 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1688 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1690 /* Retrieve the kind of LABEL. */
1691 #define LABEL_KIND(LABEL) __extension__ \
1692 ({ __typeof (LABEL) const _label = (LABEL); \
1693 if (! LABEL_P (_label)) \
1694 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1696 (enum label_kind) ((_label->jump << 1) | _label->call); })
1698 /* Set the kind of LABEL. */
1699 #define SET_LABEL_KIND(LABEL, KIND) do { \
1700 __typeof (LABEL) const _label = (LABEL); \
1701 const unsigned int _kind = (KIND); \
1702 if (! LABEL_P (_label)) \
1703 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1705 _label->jump = ((_kind >> 1) & 1); \
1706 _label->call = (_kind & 1); \
1711 /* Retrieve the kind of LABEL. */
1712 #define LABEL_KIND(LABEL) \
1713 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1715 /* Set the kind of LABEL. */
1716 #define SET_LABEL_KIND(LABEL, KIND) do { \
1717 rtx const _label = (LABEL); \
1718 const unsigned int _kind = (KIND); \
1719 _label->jump = ((_kind >> 1) & 1); \
1720 _label->call = (_kind & 1); \
1723 #endif /* rtl flag checking */
1725 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1727 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1728 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1729 be decremented and possibly the label can be deleted. */
1730 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1732 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1734 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1737 /* Methods of rtx_jump_insn. */
1739 inline rtx
rtx_jump_insn::jump_label () const
1741 return JUMP_LABEL (this);
1744 inline rtx_code_label
*rtx_jump_insn::jump_target () const
1746 return safe_as_a
<rtx_code_label
*> (JUMP_LABEL (this));
1749 inline void rtx_jump_insn::set_jump_target (rtx_code_label
*target
)
1751 JUMP_LABEL (this) = target
;
1754 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1755 goes through all the LABEL_REFs that jump to that label. The chain
1756 eventually winds up at the CODE_LABEL: it is circular. */
1757 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1759 /* Get the label that a LABEL_REF references. */
1760 #define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF)
1763 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1764 be used on RHS. Use SET_REGNO to change the value. */
1765 #define REGNO(RTX) (rhs_regno(RTX))
1766 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1768 /* Return the number of consecutive registers in a REG. This is always
1769 1 for pseudo registers and is determined by HARD_REGNO_NREGS for
1771 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1773 /* ORIGINAL_REGNO holds the number the register originally had; for a
1774 pseudo register turned into a hard reg this will hold the old pseudo
1776 #define ORIGINAL_REGNO(RTX) \
1777 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1779 /* Force the REGNO macro to only be used on the lhs. */
1780 static inline unsigned int
1781 rhs_regno (const_rtx x
)
1783 return REG_CHECK (x
)->regno
;
1786 /* Return the final register in REG X plus one. */
1787 static inline unsigned int
1788 END_REGNO (const_rtx x
)
1790 return REGNO (x
) + REG_NREGS (x
);
1793 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1794 bypassing the df machinery. */
1796 set_regno_raw (rtx x
, unsigned int regno
, unsigned int nregs
)
1798 reg_info
*reg
= REG_CHECK (x
);
1803 /* 1 if RTX is a reg or parallel that is the current function's return
1805 #define REG_FUNCTION_VALUE_P(RTX) \
1806 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1808 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1809 #define REG_USERVAR_P(RTX) \
1810 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1812 /* 1 if RTX is a reg that holds a pointer value. */
1813 #define REG_POINTER(RTX) \
1814 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1816 /* 1 if RTX is a mem that holds a pointer value. */
1817 #define MEM_POINTER(RTX) \
1818 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1820 /* 1 if the given register REG corresponds to a hard register. */
1821 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1823 /* 1 if the given register number REG_NO corresponds to a hard register. */
1824 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1826 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1827 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1828 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1830 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1831 elements actually needed to represent the constant.
1832 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1833 significant HOST_WIDE_INT. */
1834 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1835 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1836 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1838 /* For a CONST_DOUBLE:
1839 #if TARGET_SUPPORTS_WIDE_INT == 0
1840 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1841 low-order word and ..._HIGH the high-order.
1843 For a float, there is a REAL_VALUE_TYPE structure, and
1844 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1845 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1846 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1847 #define CONST_DOUBLE_REAL_VALUE(r) \
1848 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1850 #define CONST_FIXED_VALUE(r) \
1851 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1852 #define CONST_FIXED_VALUE_HIGH(r) \
1853 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1854 #define CONST_FIXED_VALUE_LOW(r) \
1855 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1857 /* For a CONST_VECTOR, return element #n. */
1858 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1860 /* For a CONST_VECTOR, return the number of elements in a vector. */
1861 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1863 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1864 SUBREG_BYTE extracts the byte-number. */
1866 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1867 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1870 /* Return the right cost to give to an operation
1871 to make the cost of the corresponding register-to-register instruction
1872 N times that of a fast register-to-register instruction. */
1873 #define COSTS_N_INSNS(N) ((N) * 4)
1875 /* Maximum cost of an rtl expression. This value has the special meaning
1876 not to use an rtx with this cost under any circumstances. */
1877 #define MAX_COST INT_MAX
1879 /* Return true if CODE always has VOIDmode. */
1882 always_void_p (enum rtx_code code
)
1887 /* A structure to hold all available cost information about an rtl
1889 struct full_rtx_costs
1895 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1897 init_costs_to_max (struct full_rtx_costs
*c
)
1899 c
->speed
= MAX_COST
;
1903 /* Initialize a full_rtx_costs structure C to zero cost. */
1905 init_costs_to_zero (struct full_rtx_costs
*c
)
1911 /* Compare two full_rtx_costs structures A and B, returning true
1912 if A < B when optimizing for speed. */
1914 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1918 return (a
->speed
< b
->speed
1919 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1921 return (a
->size
< b
->size
1922 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1925 /* Increase both members of the full_rtx_costs structure C by the
1928 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1930 c
->speed
+= COSTS_N_INSNS (n
);
1931 c
->size
+= COSTS_N_INSNS (n
);
1934 /* Describes the shape of a subreg:
1936 inner_mode == the mode of the SUBREG_REG
1937 offset == the SUBREG_BYTE
1938 outer_mode == the mode of the SUBREG itself. */
1939 struct subreg_shape
{
1940 subreg_shape (machine_mode
, unsigned int, machine_mode
);
1941 bool operator == (const subreg_shape
&) const;
1942 bool operator != (const subreg_shape
&) const;
1943 unsigned int unique_id () const;
1945 machine_mode inner_mode
;
1946 unsigned int offset
;
1947 machine_mode outer_mode
;
1951 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
1952 unsigned int offset_in
,
1953 machine_mode outer_mode_in
)
1954 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
1958 subreg_shape::operator == (const subreg_shape
&other
) const
1960 return (inner_mode
== other
.inner_mode
1961 && offset
== other
.offset
1962 && outer_mode
== other
.outer_mode
);
1966 subreg_shape::operator != (const subreg_shape
&other
) const
1968 return !operator == (other
);
1971 /* Return an integer that uniquely identifies this shape. Structures
1972 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
1973 current mode is anywhere near being 65536 bytes in size, so the
1974 id comfortably fits in an int. */
1977 subreg_shape::unique_id () const
1979 STATIC_ASSERT (MAX_MACHINE_MODE
<= 256);
1980 return (int) inner_mode
+ ((int) outer_mode
<< 8) + (offset
<< 16);
1983 /* Return the shape of a SUBREG rtx. */
1985 static inline subreg_shape
1986 shape_of_subreg (const_rtx x
)
1988 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
1989 SUBREG_BYTE (x
), GET_MODE (x
));
1992 /* Information about an address. This structure is supposed to be able
1993 to represent all supported target addresses. Please extend it if it
1994 is not yet general enough. */
1995 struct address_info
{
1996 /* The mode of the value being addressed, or VOIDmode if this is
1997 a load-address operation with no known address mode. */
2000 /* The address space. */
2003 /* A pointer to the top-level address. */
2006 /* A pointer to the inner address, after all address mutations
2007 have been stripped from the top-level address. It can be one
2010 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2012 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2013 points to the step value, depending on whether the step is variable
2014 or constant respectively. SEGMENT is null.
2016 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2017 with null fields evaluating to 0. */
2020 /* Components that make up *INNER. Each one may be null or nonnull.
2021 When nonnull, their meanings are as follows:
2023 - *SEGMENT is the "segment" of memory to which the address refers.
2024 This value is entirely target-specific and is only called a "segment"
2025 because that's its most typical use. It contains exactly one UNSPEC,
2026 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2029 - *BASE is a variable expression representing a base address.
2030 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2032 - *INDEX is a variable expression representing an index value.
2033 It may be a scaled expression, such as a MULT. It has exactly
2034 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2036 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2037 unmutated RTX_CONST_OBJ. */
2048 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2049 of BASE_TERM, otherwise it is null. */
2052 /* ADDRESS if this structure describes an address operand, MEM if
2053 it describes a MEM address. */
2054 enum rtx_code addr_outer_code
;
2056 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2057 enum rtx_code base_outer_code
;
2059 /* True if this is an RTX_AUTOINC address. */
2063 /* This is used to bundle an rtx and a mode together so that the pair
2064 can be used with the wi:: routines. If we ever put modes into rtx
2065 integer constants, this should go away and then just pass an rtx in. */
2066 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
2071 struct int_traits
<rtx_mode_t
>
2073 static const enum precision_type precision_type
= VAR_PRECISION
;
2074 static const bool host_dependent_precision
= false;
2075 /* This ought to be true, except for the special case that BImode
2076 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2077 static const bool is_sign_extended
= false;
2078 static unsigned int get_precision (const rtx_mode_t
&);
2079 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
2080 const rtx_mode_t
&);
2085 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
2087 return GET_MODE_PRECISION (x
.second
);
2090 inline wi::storage_ref
2091 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
2092 unsigned int precision
,
2093 const rtx_mode_t
&x
)
2095 gcc_checking_assert (precision
== get_precision (x
));
2096 switch (GET_CODE (x
.first
))
2099 if (precision
< HOST_BITS_PER_WIDE_INT
)
2100 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2101 targets is 1 rather than -1. */
2102 gcc_checking_assert (INTVAL (x
.first
)
2103 == sext_hwi (INTVAL (x
.first
), precision
)
2104 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2106 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2108 case CONST_WIDE_INT
:
2109 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2110 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2112 #if TARGET_SUPPORTS_WIDE_INT == 0
2114 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2124 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2125 wide_int
min_value (machine_mode
, signop
);
2126 wide_int
max_value (machine_mode
, signop
);
2129 inline wi::hwi_with_prec
2130 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2132 return shwi (val
, GET_MODE_PRECISION (mode
));
2135 /* Produce the smallest number that is represented in MODE. The precision
2136 is taken from MODE and the sign from SGN. */
2138 wi::min_value (machine_mode mode
, signop sgn
)
2140 return min_value (GET_MODE_PRECISION (mode
), sgn
);
2143 /* Produce the largest number that is represented in MODE. The precision
2144 is taken from MODE and the sign from SGN. */
2146 wi::max_value (machine_mode mode
, signop sgn
)
2148 return max_value (GET_MODE_PRECISION (mode
), sgn
);
2151 extern void init_rtlanal (void);
2152 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
2153 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2154 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
2155 struct full_rtx_costs
*);
2156 extern unsigned int subreg_lsb (const_rtx
);
2157 extern unsigned int subreg_lsb_1 (machine_mode
, machine_mode
,
2159 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2160 unsigned int, machine_mode
);
2161 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2162 unsigned int, machine_mode
);
2163 extern unsigned int subreg_regno (const_rtx
);
2164 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2165 unsigned int, machine_mode
);
2166 extern unsigned int subreg_nregs (const_rtx
);
2167 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2168 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2169 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2170 extern bool constant_pool_constant_p (rtx
);
2171 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2172 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2173 extern void split_double (rtx
, rtx
*, rtx
*);
2174 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2175 extern void decompose_address (struct address_info
*, rtx
*,
2176 machine_mode
, addr_space_t
, enum rtx_code
);
2177 extern void decompose_lea_address (struct address_info
*, rtx
*);
2178 extern void decompose_mem_address (struct address_info
*, rtx
);
2179 extern void update_address (struct address_info
*);
2180 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2181 extern enum rtx_code
get_index_code (const struct address_info
*);
2183 #ifndef GENERATOR_FILE
2184 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2185 rather than size. */
2188 set_rtx_cost (rtx x
, bool speed_p
)
2190 return rtx_cost (x
, INSN
, 4, speed_p
);
2193 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2196 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2198 get_full_rtx_cost (x
, INSN
, 4, c
);
2201 /* Return the cost of moving X into a register, relative to the cost
2202 of a register move. SPEED_P is true if optimizing for speed rather
2206 set_src_cost (rtx x
, bool speed_p
)
2208 return rtx_cost (x
, SET
, 1, speed_p
);
2211 /* Like set_src_cost, but return both the speed and size costs in C. */
2214 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
2216 get_full_rtx_cost (x
, SET
, 1, c
);
2220 /* 1 if RTX is a subreg containing a reg that is already known to be
2221 sign- or zero-extended from the mode of the subreg to the mode of
2222 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2225 When used as a LHS, is means that this extension must be done
2226 when assigning to SUBREG_REG. */
2228 #define SUBREG_PROMOTED_VAR_P(RTX) \
2229 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2231 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2232 this gives the necessary extensions:
2233 0 - signed (SPR_SIGNED)
2234 1 - normal unsigned (SPR_UNSIGNED)
2235 2 - value is both sign and unsign extended for mode
2236 (SPR_SIGNED_AND_UNSIGNED).
2237 -1 - pointer unsigned, which most often can be handled like unsigned
2238 extension, except for generating instructions where we need to
2239 emit special code (ptr_extend insns) on some architectures
2242 const int SRP_POINTER
= -1;
2243 const int SRP_SIGNED
= 0;
2244 const int SRP_UNSIGNED
= 1;
2245 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2247 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2248 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2250 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2255 _rtx->volatil = 0; \
2256 _rtx->unchanging = 0; \
2259 _rtx->volatil = 0; \
2260 _rtx->unchanging = 1; \
2262 case SRP_UNSIGNED: \
2263 _rtx->volatil = 1; \
2264 _rtx->unchanging = 0; \
2266 case SRP_SIGNED_AND_UNSIGNED: \
2267 _rtx->volatil = 1; \
2268 _rtx->unchanging = 1; \
2273 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2274 including SRP_SIGNED_AND_UNSIGNED if promoted for
2275 both signed and unsigned. */
2276 #define SUBREG_PROMOTED_GET(RTX) \
2277 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2278 + (RTX)->unchanging - 1)
2280 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2281 #define SUBREG_PROMOTED_SIGN(RTX) \
2282 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2283 : (RTX)->unchanging - 1)
2285 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2287 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2288 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2290 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2291 for UNSIGNED type. */
2292 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2293 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2295 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2296 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2297 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2298 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2299 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2301 /* True if the subreg was generated by LRA for reload insns. Such
2302 subregs are valid only during LRA. */
2303 #define LRA_SUBREG_P(RTX) \
2304 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2306 /* True if call is instrumented by Pointer Bounds Checker. */
2307 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \
2308 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump)
2310 /* Access various components of an ASM_OPERANDS rtx. */
2312 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2313 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2314 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2315 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2316 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2317 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2318 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2319 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2320 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2321 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2322 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2323 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2324 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2325 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2326 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2327 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2328 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2329 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2331 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2332 #define MEM_READONLY_P(RTX) \
2333 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2335 /* 1 if RTX is a mem and we should keep the alias set for this mem
2336 unchanged when we access a component. Set to 1, or example, when we
2337 are already in a non-addressable component of an aggregate. */
2338 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2339 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2341 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2342 #define MEM_VOLATILE_P(RTX) \
2343 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2344 ASM_INPUT)->volatil)
2346 /* 1 if RTX is a mem that cannot trap. */
2347 #define MEM_NOTRAP_P(RTX) \
2348 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2350 /* The memory attribute block. We provide access macros for each value
2351 in the block and provide defaults if none specified. */
2352 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2354 /* The register attribute block. We provide access macros for each value
2355 in the block and provide defaults if none specified. */
2356 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2358 #ifndef GENERATOR_FILE
2359 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2360 set, and may alias anything. Otherwise, the MEM can only alias
2361 MEMs in a conflicting alias set. This value is set in a
2362 language-dependent manner in the front-end, and should not be
2363 altered in the back-end. These set numbers are tested with
2364 alias_sets_conflict_p. */
2365 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2367 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2368 refer to part of a DECL. It may also be a COMPONENT_REF. */
2369 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2371 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2372 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2374 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2375 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2377 /* For a MEM rtx, the address space. */
2378 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2380 /* For a MEM rtx, true if its MEM_SIZE is known. */
2381 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2383 /* For a MEM rtx, the size in bytes of the MEM. */
2384 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2386 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2387 mode as a default when STRICT_ALIGNMENT, but not if not. */
2388 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2390 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2393 /* For a REG rtx, the decl it is known to refer to, if it is known to
2394 refer to part of a DECL. */
2395 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2397 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2399 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2401 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2402 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2403 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2404 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2405 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2406 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2407 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2408 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2410 /* 1 if RTX is a label_ref for a nonlocal label. */
2411 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2412 REG_LABEL_TARGET note. */
2413 #define LABEL_REF_NONLOCAL_P(RTX) \
2414 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2416 /* 1 if RTX is a code_label that should always be considered to be needed. */
2417 #define LABEL_PRESERVE_P(RTX) \
2418 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2420 /* During sched, 1 if RTX is an insn that must be scheduled together
2421 with the preceding insn. */
2422 #define SCHED_GROUP_P(RTX) \
2423 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2424 JUMP_INSN, CALL_INSN)->in_struct)
2426 /* For a SET rtx, SET_DEST is the place that is set
2427 and SET_SRC is the value it is set to. */
2428 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2429 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2430 #define SET_IS_RETURN_P(RTX) \
2431 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2433 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2434 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2435 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2437 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2438 conditionally executing the code on, COND_EXEC_CODE is the code
2439 to execute if the condition is true. */
2440 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2441 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2443 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2445 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2446 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2448 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2449 tree constant pool. This information is private to varasm.c. */
2450 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2451 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2452 (RTX), SYMBOL_REF)->frame_related)
2454 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2455 #define SYMBOL_REF_FLAG(RTX) \
2456 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2458 /* 1 if RTX is a symbol_ref that has been the library function in
2459 emit_library_call. */
2460 #define SYMBOL_REF_USED(RTX) \
2461 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2463 /* 1 if RTX is a symbol_ref for a weak symbol. */
2464 #define SYMBOL_REF_WEAK(RTX) \
2465 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2467 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2468 SYMBOL_REF_CONSTANT. */
2469 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2471 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2473 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2474 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2476 /* The tree (decl or constant) associated with the symbol, or null. */
2477 #define SYMBOL_REF_DECL(RTX) \
2478 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2480 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2481 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2482 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2484 /* The rtx constant pool entry for a symbol, or null. */
2485 #define SYMBOL_REF_CONSTANT(RTX) \
2486 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2488 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2489 information derivable from the tree decl associated with this symbol.
2490 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2491 decl. In some cases this is a bug. But beyond that, it's nice to cache
2492 this information to avoid recomputing it. Finally, this allows space for
2493 the target to store more than one bit of information, as with
2495 #define SYMBOL_REF_FLAGS(RTX) \
2496 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2497 ->u2.symbol_ref_flags)
2499 /* These flags are common enough to be defined for all targets. They
2500 are computed by the default version of targetm.encode_section_info. */
2502 /* Set if this symbol is a function. */
2503 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2504 #define SYMBOL_REF_FUNCTION_P(RTX) \
2505 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2506 /* Set if targetm.binds_local_p is true. */
2507 #define SYMBOL_FLAG_LOCAL (1 << 1)
2508 #define SYMBOL_REF_LOCAL_P(RTX) \
2509 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2510 /* Set if targetm.in_small_data_p is true. */
2511 #define SYMBOL_FLAG_SMALL (1 << 2)
2512 #define SYMBOL_REF_SMALL_P(RTX) \
2513 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2514 /* The three-bit field at [5:3] is true for TLS variables; use
2515 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2516 #define SYMBOL_FLAG_TLS_SHIFT 3
2517 #define SYMBOL_REF_TLS_MODEL(RTX) \
2518 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2519 /* Set if this symbol is not defined in this translation unit. */
2520 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2521 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2522 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2523 /* Set if this symbol has a block_symbol structure associated with it. */
2524 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2525 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2526 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2527 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2528 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2529 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2530 #define SYMBOL_REF_ANCHOR_P(RTX) \
2531 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2533 /* Subsequent bits are available for the target to use. */
2534 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2535 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2537 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2538 structure to which the symbol belongs, or NULL if it has not been
2539 assigned a block. */
2540 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2542 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2543 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2544 RTX has not yet been assigned to a block, or it has not been given an
2545 offset within that block. */
2546 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2548 /* True if RTX is flagged to be a scheduling barrier. */
2549 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2550 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2552 /* Indicate whether the machine has any sort of auto increment addressing.
2553 If not, we can avoid checking for REG_INC notes. */
2555 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2556 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2557 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2558 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2559 #define AUTO_INC_DEC
2562 /* Define a macro to look for REG_INC notes,
2563 but save time on machines where they never exist. */
2566 #define FIND_REG_INC_NOTE(INSN, REG) \
2567 ((REG) != NULL_RTX && REG_P ((REG)) \
2568 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2569 : find_reg_note ((INSN), REG_INC, (REG)))
2571 #define FIND_REG_INC_NOTE(INSN, REG) 0
2574 #ifndef HAVE_PRE_INCREMENT
2575 #define HAVE_PRE_INCREMENT 0
2578 #ifndef HAVE_PRE_DECREMENT
2579 #define HAVE_PRE_DECREMENT 0
2582 #ifndef HAVE_POST_INCREMENT
2583 #define HAVE_POST_INCREMENT 0
2586 #ifndef HAVE_POST_DECREMENT
2587 #define HAVE_POST_DECREMENT 0
2590 #ifndef HAVE_POST_MODIFY_DISP
2591 #define HAVE_POST_MODIFY_DISP 0
2594 #ifndef HAVE_POST_MODIFY_REG
2595 #define HAVE_POST_MODIFY_REG 0
2598 #ifndef HAVE_PRE_MODIFY_DISP
2599 #define HAVE_PRE_MODIFY_DISP 0
2602 #ifndef HAVE_PRE_MODIFY_REG
2603 #define HAVE_PRE_MODIFY_REG 0
2607 /* Some architectures do not have complete pre/post increment/decrement
2608 instruction sets, or only move some modes efficiently. These macros
2609 allow us to tune autoincrement generation. */
2611 #ifndef USE_LOAD_POST_INCREMENT
2612 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2615 #ifndef USE_LOAD_POST_DECREMENT
2616 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2619 #ifndef USE_LOAD_PRE_INCREMENT
2620 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2623 #ifndef USE_LOAD_PRE_DECREMENT
2624 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2627 #ifndef USE_STORE_POST_INCREMENT
2628 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2631 #ifndef USE_STORE_POST_DECREMENT
2632 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2635 #ifndef USE_STORE_PRE_INCREMENT
2636 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2639 #ifndef USE_STORE_PRE_DECREMENT
2640 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2643 /* Nonzero when we are generating CONCATs. */
2644 extern int generating_concat_p
;
2646 /* Nonzero when we are expanding trees to RTL. */
2647 extern int currently_expanding_to_rtl
;
2649 /* Generally useful functions. */
2652 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2653 extern rtx
plus_constant (machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2656 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
2657 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2658 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2659 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2660 #define const_wide_int_alloc(NWORDS) \
2661 rtx_alloc_v (CONST_WIDE_INT, \
2662 (sizeof (struct hwivec_def) \
2663 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2665 extern rtvec rtvec_alloc (int);
2666 extern rtvec
shallow_copy_rtvec (rtvec
);
2667 extern bool shared_const_p (const_rtx
);
2668 extern rtx
copy_rtx (rtx
);
2669 extern enum rtx_code
classify_insn (rtx
);
2670 extern void dump_rtx_statistics (void);
2673 extern rtx
copy_rtx_if_shared (rtx
);
2676 extern unsigned int rtx_size (const_rtx
);
2677 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
2678 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2679 extern int rtx_equal_p (const_rtx
, const_rtx
);
2682 extern rtvec
gen_rtvec_v (int, rtx
*);
2683 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
2684 extern rtx
gen_reg_rtx (machine_mode
);
2685 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, int);
2686 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
2687 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2688 extern rtx_code_label
*gen_label_rtx (void);
2689 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
2692 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
2695 extern rtx
gen_highpart (machine_mode
, rtx
);
2696 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
2697 extern rtx
operand_subword (rtx
, unsigned int, int, machine_mode
);
2700 extern rtx
operand_subword_force (rtx
, unsigned int, machine_mode
);
2701 extern bool paradoxical_subreg_p (const_rtx
);
2702 extern int subreg_lowpart_p (const_rtx
);
2703 extern unsigned int subreg_lowpart_offset (machine_mode
,
2705 extern unsigned int subreg_highpart_offset (machine_mode
,
2707 extern int byte_lowpart_offset (machine_mode
, machine_mode
);
2708 extern rtx
make_safe_from (rtx
, rtx
);
2709 extern rtx
convert_memory_address_addr_space (machine_mode
, rtx
,
2711 #define convert_memory_address(to_mode,x) \
2712 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2713 extern const char *get_insn_name (int);
2714 extern rtx_insn
*get_last_insn_anywhere (void);
2715 extern rtx_insn
*get_first_nonnote_insn (void);
2716 extern rtx_insn
*get_last_nonnote_insn (void);
2717 extern void start_sequence (void);
2718 extern void push_to_sequence (rtx_insn
*);
2719 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
2720 extern void end_sequence (void);
2721 #if TARGET_SUPPORTS_WIDE_INT == 0
2722 extern double_int
rtx_to_double_int (const_rtx
);
2724 extern void cwi_output_hex (FILE *, const_rtx
);
2725 #ifndef GENERATOR_FILE
2726 extern rtx
immed_wide_int_const (const wide_int_ref
&, machine_mode
);
2728 #if TARGET_SUPPORTS_WIDE_INT == 0
2729 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
2735 extern rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
2738 extern rtx
force_const_mem (machine_mode
, rtx
);
2743 extern rtx
get_pool_constant (const_rtx
);
2744 extern rtx
get_pool_constant_mark (rtx
, bool *);
2745 extern machine_mode
get_pool_mode (const_rtx
);
2746 extern rtx
simplify_subtraction (rtx
);
2747 extern void decide_function_section (tree
);
2750 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
2751 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
2752 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, int);
2753 extern rtx_jump_insn
*emit_jump_insn_before (rtx
, rtx
);
2754 extern rtx_jump_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
2755 extern rtx_jump_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*, int);
2756 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
2757 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
2758 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, int);
2759 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx_insn
*);
2760 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
2761 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
2762 extern rtx_barrier
*emit_barrier_before (rtx
);
2763 extern rtx_code_label
*emit_label_before (rtx
, rtx_insn
*);
2764 extern rtx_note
*emit_note_before (enum insn_note
, rtx_insn
*);
2765 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
2766 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
2767 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
2768 extern rtx_jump_insn
*emit_jump_insn_after (rtx
, rtx
);
2769 extern rtx_jump_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
2770 extern rtx_jump_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
2771 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
2772 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
2773 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
2774 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
2775 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
2776 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
2777 extern rtx_barrier
*emit_barrier_after (rtx
);
2778 extern rtx_insn
*emit_label_after (rtx
, rtx_insn
*);
2779 extern rtx_note
*emit_note_after (enum insn_note
, rtx_insn
*);
2780 extern rtx_insn
*emit_insn (rtx
);
2781 extern rtx_insn
*emit_debug_insn (rtx
);
2782 extern rtx_insn
*emit_jump_insn (rtx
);
2783 extern rtx_insn
*emit_call_insn (rtx
);
2784 extern rtx_code_label
*emit_label (rtx
);
2785 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
2786 extern rtx_barrier
*emit_barrier (void);
2787 extern rtx_note
*emit_note (enum insn_note
);
2788 extern rtx_note
*emit_note_copy (rtx_note
*);
2789 extern rtx_insn
*gen_clobber (rtx
);
2790 extern rtx_insn
*emit_clobber (rtx
);
2791 extern rtx_insn
*gen_use (rtx
);
2792 extern rtx_insn
*emit_use (rtx
);
2793 extern rtx_insn
*make_insn_raw (rtx
);
2794 extern void add_function_usage_to (rtx
, rtx
);
2795 extern rtx_call_insn
*last_call_insn (void);
2796 extern rtx_insn
*previous_insn (rtx_insn
*);
2797 extern rtx_insn
*next_insn (rtx_insn
*);
2798 extern rtx_insn
*prev_nonnote_insn (rtx
);
2799 extern rtx_insn
*prev_nonnote_insn_bb (rtx
);
2800 extern rtx_insn
*next_nonnote_insn (rtx
);
2801 extern rtx_insn
*next_nonnote_insn_bb (rtx_insn
*);
2802 extern rtx_insn
*prev_nondebug_insn (rtx
);
2803 extern rtx_insn
*next_nondebug_insn (rtx
);
2804 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx
);
2805 extern rtx_insn
*next_nonnote_nondebug_insn (rtx
);
2806 extern rtx_insn
*prev_real_insn (rtx
);
2807 extern rtx_insn
*next_real_insn (rtx
);
2808 extern rtx_insn
*prev_active_insn (rtx
);
2809 extern rtx_insn
*next_active_insn (rtx
);
2810 extern int active_insn_p (const_rtx
);
2811 extern rtx_insn
*next_cc0_user (rtx
);
2812 extern rtx_insn
*prev_cc0_setter (rtx_insn
*);
2815 extern int insn_line (const rtx_insn
*);
2816 extern const char * insn_file (const rtx_insn
*);
2817 extern tree
insn_scope (const rtx_insn
*);
2818 extern expanded_location
insn_location (const rtx_insn
*);
2819 extern location_t prologue_location
, epilogue_location
;
2822 extern enum rtx_code
reverse_condition (enum rtx_code
);
2823 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
2824 extern enum rtx_code
swap_condition (enum rtx_code
);
2825 extern enum rtx_code
unsigned_condition (enum rtx_code
);
2826 extern enum rtx_code
signed_condition (enum rtx_code
);
2827 extern void mark_jump_label (rtx
, rtx_insn
*, int);
2830 extern rtx_insn
*delete_related_insns (rtx
);
2833 extern rtx
*find_constant_term_loc (rtx
*);
2836 extern rtx_insn
*try_split (rtx
, rtx_insn
*, int);
2837 extern int split_branch_probability
;
2839 /* In insn-recog.c (generated by genrecog). */
2840 extern rtx_insn
*split_insns (rtx
, rtx_insn
*);
2842 /* In simplify-rtx.c */
2843 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
2845 extern rtx
simplify_unary_operation (enum rtx_code
, machine_mode
, rtx
,
2847 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
2849 extern rtx
simplify_binary_operation (enum rtx_code
, machine_mode
, rtx
,
2851 extern rtx
simplify_ternary_operation (enum rtx_code
, machine_mode
,
2852 machine_mode
, rtx
, rtx
, rtx
);
2853 extern rtx
simplify_const_relational_operation (enum rtx_code
,
2854 machine_mode
, rtx
, rtx
);
2855 extern rtx
simplify_relational_operation (enum rtx_code
, machine_mode
,
2856 machine_mode
, rtx
, rtx
);
2857 extern rtx
simplify_gen_binary (enum rtx_code
, machine_mode
, rtx
, rtx
);
2858 extern rtx
simplify_gen_unary (enum rtx_code
, machine_mode
, rtx
,
2860 extern rtx
simplify_gen_ternary (enum rtx_code
, machine_mode
,
2861 machine_mode
, rtx
, rtx
, rtx
);
2862 extern rtx
simplify_gen_relational (enum rtx_code
, machine_mode
,
2863 machine_mode
, rtx
, rtx
);
2864 extern rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
,
2866 extern rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
,
2868 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
2869 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
2870 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
2871 extern rtx
simplify_rtx (const_rtx
);
2872 extern rtx
avoid_constant_pool_reference (rtx
);
2873 extern rtx
delegitimize_mem_from_attrs (rtx
);
2874 extern bool mode_signbit_p (machine_mode
, const_rtx
);
2875 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
2876 extern bool val_signbit_known_set_p (machine_mode
,
2877 unsigned HOST_WIDE_INT
);
2878 extern bool val_signbit_known_clear_p (machine_mode
,
2879 unsigned HOST_WIDE_INT
);
2882 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
2885 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
2889 extern rtx
set_for_reg_notes (rtx
);
2890 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
2891 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
2892 extern void set_insn_deleted (rtx
);
2894 /* Functions in rtlanal.c */
2896 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
2898 /* Handle the cheap and common cases inline for performance. */
2900 inline rtx
single_set (const rtx_insn
*insn
)
2905 if (GET_CODE (PATTERN (insn
)) == SET
)
2906 return PATTERN (insn
);
2908 /* Defer to the more expensive case. */
2909 return single_set_2 (insn
, PATTERN (insn
));
2912 extern machine_mode
get_address_mode (rtx mem
);
2913 extern int rtx_addr_can_trap_p (const_rtx
);
2914 extern bool nonzero_address_p (const_rtx
);
2915 extern int rtx_unstable_p (const_rtx
);
2916 extern bool rtx_varies_p (const_rtx
, bool);
2917 extern bool rtx_addr_varies_p (const_rtx
, bool);
2918 extern rtx
get_call_rtx_from (rtx
);
2919 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2920 extern rtx
get_related_value (const_rtx
);
2921 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2922 extern void split_const (rtx
, rtx
*, rtx
*);
2923 extern bool unsigned_reg_p (rtx
);
2924 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2925 extern int count_occurrences (const_rtx
, const_rtx
, int);
2926 extern int reg_referenced_p (const_rtx
, const_rtx
);
2927 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2928 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2929 extern int commutative_operand_precedence (rtx
);
2930 extern bool swap_commutative_operands_p (rtx
, rtx
);
2931 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2932 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
2933 extern int modified_in_p (const_rtx
, const_rtx
);
2934 extern int reg_set_p (const_rtx
, const_rtx
);
2935 extern int multiple_sets (const_rtx
);
2936 extern int set_noop_p (const_rtx
);
2937 extern int noop_move_p (const rtx_insn
*);
2938 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2939 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2940 extern const_rtx
set_of (const_rtx
, const_rtx
);
2941 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2942 extern void record_hard_reg_uses (rtx
*, void *);
2944 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
2945 extern void find_all_hard_reg_sets (const rtx_insn
*, HARD_REG_SET
*, bool);
2947 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2948 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2949 extern int dead_or_set_p (const_rtx
, const_rtx
);
2950 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2951 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2952 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2953 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2954 extern rtx
find_constant_src (const rtx_insn
*);
2955 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2956 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2957 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2958 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2959 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2960 extern void add_shallow_copy_of_reg_note (rtx_insn
*, rtx
);
2961 extern void remove_note (rtx
, const_rtx
);
2962 extern void remove_reg_equal_equiv_notes (rtx_insn
*);
2963 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2964 extern int side_effects_p (const_rtx
);
2965 extern int volatile_refs_p (const_rtx
);
2966 extern int volatile_insn_p (const_rtx
);
2967 extern int may_trap_p_1 (const_rtx
, unsigned);
2968 extern int may_trap_p (const_rtx
);
2969 extern int may_trap_or_fault_p (const_rtx
);
2970 extern bool can_throw_internal (const_rtx
);
2971 extern bool can_throw_external (const_rtx
);
2972 extern bool insn_could_throw_p (const_rtx
);
2973 extern bool insn_nothrow_p (const_rtx
);
2974 extern bool can_nonlocal_goto (const rtx_insn
*);
2975 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
2976 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
2977 extern int inequality_comparisons_p (const_rtx
);
2978 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2979 extern void replace_label (rtx
*, rtx
, rtx
, bool);
2980 extern void replace_label_in_insn (rtx_insn
*, rtx
, rtx
, bool);
2981 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
2982 extern bool tablejump_p (const rtx_insn
*, rtx
*, rtx_jump_table_data
**);
2983 extern int computed_jump_p (const rtx_insn
*);
2984 extern bool tls_referenced_p (const_rtx
);
2986 /* Overload for refers_to_regno_p for checking a single register. */
2988 refers_to_regno_p (unsigned int regnum
, const_rtx x
, rtx
* loc
= NULL
)
2990 return refers_to_regno_p (regnum
, regnum
+ 1, x
, loc
);
2993 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2994 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2995 NULL. The callback is passed the same opaque ARG passed to
2996 for_each_inc_dec. Return zero to continue looking for other
2997 autoinc operations or any other value to interrupt the traversal and
2998 return that value to the caller of for_each_inc_dec. */
2999 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
3000 rtx srcoff
, void *arg
);
3001 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
3003 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
3005 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
3006 rtx_equal_p_callback_function
);
3008 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
3010 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
3011 bool, hash_rtx_callback_function
);
3013 extern rtx
regno_use_in (unsigned int, rtx
);
3014 extern int auto_inc_p (const_rtx
);
3015 extern bool in_insn_list_p (const rtx_insn_list
*, const rtx_insn
*);
3016 extern void remove_node_from_expr_list (const_rtx
, rtx_expr_list
**);
3017 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
3018 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
3019 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
3020 extern bool keep_with_call_p (const rtx_insn
*);
3021 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
3022 extern int insn_rtx_cost (rtx
, bool);
3023 extern unsigned seq_cost (const rtx_insn
*, bool);
3025 /* Given an insn and condition, return a canonical description of
3026 the test being made. */
3027 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
3030 /* Given a JUMP_INSN, return a canonical description of the test
3032 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
3034 /* Information about a subreg of a hard register. */
3037 /* Offset of first hard register involved in the subreg. */
3039 /* Number of hard registers involved in the subreg. In the case of
3040 a paradoxical subreg, this is the number of registers that would
3041 be modified by writing to the subreg; some of them may be don't-care
3042 when reading from the subreg. */
3044 /* Whether this subreg can be represented as a hard reg with the new
3045 mode (by adding OFFSET to the original hard register). */
3046 bool representable_p
;
3049 extern void subreg_get_info (unsigned int, machine_mode
,
3050 unsigned int, machine_mode
,
3051 struct subreg_info
*);
3055 extern void free_EXPR_LIST_list (rtx_expr_list
**);
3056 extern void free_INSN_LIST_list (rtx_insn_list
**);
3057 extern void free_EXPR_LIST_node (rtx
);
3058 extern void free_INSN_LIST_node (rtx
);
3059 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
3060 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
3061 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
3062 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
3063 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
3064 extern rtx
remove_list_elem (rtx
, rtx
*);
3065 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
3066 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
3071 /* Resize reg info. */
3072 extern bool resize_reg_info (void);
3073 /* Free up register info memory. */
3074 extern void free_reg_info (void);
3075 extern void init_subregs_of_mode (void);
3076 extern void finish_subregs_of_mode (void);
3079 extern rtx
extract_asm_operands (rtx
);
3080 extern int asm_noperands (const_rtx
);
3081 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
3082 machine_mode
*, location_t
*);
3083 extern void get_referenced_operands (const char *, bool *, unsigned int);
3085 extern enum reg_class
reg_preferred_class (int);
3086 extern enum reg_class
reg_alternate_class (int);
3087 extern enum reg_class
reg_allocno_class (int);
3088 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
3091 extern void split_all_insns (void);
3092 extern unsigned int split_all_insns_noflow (void);
3094 #define MAX_SAVED_CONST_INT 64
3095 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
3097 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3098 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3099 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3100 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3101 extern GTY(()) rtx const_true_rtx
;
3103 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3105 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3106 same as VOIDmode. */
3108 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3110 /* Likewise, for the constants 1 and 2 and -1. */
3112 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3113 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3114 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3116 extern GTY(()) rtx pc_rtx
;
3117 extern GTY(()) rtx cc0_rtx
;
3118 extern GTY(()) rtx ret_rtx
;
3119 extern GTY(()) rtx simple_return_rtx
;
3120 extern GTY(()) rtx_insn
*invalid_insn_rtx
;
3122 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3123 is used to represent the frame pointer. This is because the
3124 hard frame pointer and the automatic variables are separated by an amount
3125 that cannot be determined until after register allocation. We can assume
3126 that in this case ELIMINABLE_REGS will be defined, one action of which
3127 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3128 #ifndef HARD_FRAME_POINTER_REGNUM
3129 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3132 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3133 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3134 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3137 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3138 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3139 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3142 /* Index labels for global_rtl. */
3143 enum global_rtl_index
3147 /* For register elimination to work properly these hard_frame_pointer_rtx,
3148 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3149 the same register. */
3150 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3151 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3153 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3154 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3156 GR_HARD_FRAME_POINTER
,
3158 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3159 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3160 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3165 GR_VIRTUAL_INCOMING_ARGS
,
3166 GR_VIRTUAL_STACK_ARGS
,
3167 GR_VIRTUAL_STACK_DYNAMIC
,
3168 GR_VIRTUAL_OUTGOING_ARGS
,
3170 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3175 /* Target-dependent globals. */
3176 struct GTY(()) target_rtl
{
3177 /* All references to the hard registers in global_rtl_index go through
3178 these unique rtl objects. On machines where the frame-pointer and
3179 arg-pointer are the same register, they use the same unique object.
3181 After register allocation, other rtl objects which used to be pseudo-regs
3182 may be clobbered to refer to the frame-pointer register.
3183 But references that were originally to the frame-pointer can be
3184 distinguished from the others because they contain frame_pointer_rtx.
3186 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3187 tricky: until register elimination has taken place hard_frame_pointer_rtx
3188 should be used if it is being set, and frame_pointer_rtx otherwise. After
3189 register elimination hard_frame_pointer_rtx should always be used.
3190 On machines where the two registers are same (most) then these are the
3192 rtx x_global_rtl
[GR_MAX
];
3194 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3195 rtx x_pic_offset_table_rtx
;
3197 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3198 This is used to implement __builtin_return_address for some machines;
3199 see for instance the MIPS port. */
3200 rtx x_return_address_pointer_rtx
;
3202 /* Commonly used RTL for hard registers. These objects are not
3203 necessarily unique, so we allocate them separately from global_rtl.
3204 They are initialized once per compilation unit, then copied into
3205 regno_reg_rtx at the beginning of each function. */
3206 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3208 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3209 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3211 /* Static hunks of RTL used by the aliasing code; these are treated
3212 as persistent to avoid unnecessary RTL allocations. */
3213 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3215 /* The default memory attributes for each mode. */
3216 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3218 /* Track if RTL has been initialized. */
3219 bool target_specific_initialized
;
3222 extern GTY(()) struct target_rtl default_target_rtl
;
3223 #if SWITCHABLE_TARGET
3224 extern struct target_rtl
*this_target_rtl
;
3226 #define this_target_rtl (&default_target_rtl)
3229 #define global_rtl \
3230 (this_target_rtl->x_global_rtl)
3231 #define pic_offset_table_rtx \
3232 (this_target_rtl->x_pic_offset_table_rtx)
3233 #define return_address_pointer_rtx \
3234 (this_target_rtl->x_return_address_pointer_rtx)
3235 #define top_of_stack \
3236 (this_target_rtl->x_top_of_stack)
3237 #define mode_mem_attrs \
3238 (this_target_rtl->x_mode_mem_attrs)
3240 /* All references to certain hard regs, except those created
3241 by allocating pseudo regs into them (when that's possible),
3242 go through these unique rtx objects. */
3243 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3244 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3245 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3246 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3248 #ifndef GENERATOR_FILE
3249 /* Return the attributes of a MEM rtx. */
3250 static inline struct mem_attrs
*
3251 get_mem_attrs (const_rtx x
)
3253 struct mem_attrs
*attrs
;
3255 attrs
= MEM_ATTRS (x
);
3257 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3262 /* Include the RTL generation functions. */
3264 #ifndef GENERATOR_FILE
3266 #undef gen_rtx_ASM_INPUT
3267 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3268 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3269 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3270 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3273 /* There are some RTL codes that require special attention; the
3274 generation functions included above do the raw handling. If you
3275 add to this list, modify special_rtx in gengenrtl.c as well. */
3277 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3278 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3280 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3281 basic_block bb
, rtx pattern
, int location
, int code
,
3283 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3284 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3285 extern void set_mode_and_regno (rtx
, machine_mode
, unsigned int);
3286 extern rtx
gen_raw_REG (machine_mode
, unsigned int);
3287 extern rtx
gen_rtx_REG (machine_mode
, unsigned int);
3288 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, int);
3289 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
3290 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
3291 enum var_init_status
);
3293 #ifdef GENERATOR_FILE
3294 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
3297 PUT_MODE (rtx x
, machine_mode mode
)
3300 set_mode_and_regno (x
, mode
, REGNO (x
));
3302 PUT_MODE_RAW (x
, mode
);
3306 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3308 /* Virtual registers are used during RTL generation to refer to locations into
3309 the stack frame when the actual location isn't known until RTL generation
3310 is complete. The routine instantiate_virtual_regs replaces these with
3311 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3314 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3316 /* This points to the first word of the incoming arguments passed on the stack,
3317 either by the caller or by the callee when pretending it was passed by the
3320 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3322 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3324 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3325 variable on the stack. Otherwise, it points to the first variable on
3328 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3330 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3332 /* This points to the location of dynamically-allocated memory on the stack
3333 immediately after the stack pointer has been adjusted by the amount
3336 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3338 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3340 /* This points to the location in the stack at which outgoing arguments should
3341 be written when the stack is pre-pushed (arguments pushed using push
3342 insns always use sp). */
3344 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3346 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3348 /* This points to the Canonical Frame Address of the function. This
3349 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3350 but is calculated relative to the arg pointer for simplicity; the
3351 frame pointer nor stack pointer are necessarily fixed relative to
3352 the CFA until after reload. */
3354 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3356 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3358 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3360 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3363 #define virtual_preferred_stack_boundary_rtx \
3364 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3366 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3367 ((FIRST_VIRTUAL_REGISTER) + 5)
3369 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3371 /* Nonzero if REGNUM is a pointer into the stack frame. */
3372 #define REGNO_PTR_FRAME_P(REGNUM) \
3373 ((REGNUM) == STACK_POINTER_REGNUM \
3374 || (REGNUM) == FRAME_POINTER_REGNUM \
3375 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3376 || (REGNUM) == ARG_POINTER_REGNUM \
3377 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3378 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3380 /* REGNUM never really appearing in the INSN stream. */
3381 #define INVALID_REGNUM (~(unsigned int) 0)
3383 /* REGNUM for which no debug information can be generated. */
3384 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3386 extern rtx
output_constant_def (tree
, int);
3387 extern rtx
lookup_constant_def (tree
);
3389 /* Nonzero after end of reload pass.
3390 Set to 1 or 0 by reload1.c. */
3392 extern int reload_completed
;
3394 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3395 extern int epilogue_completed
;
3397 /* Set to 1 while reload_as_needed is operating.
3398 Required by some machines to handle any generated moves differently. */
3400 extern int reload_in_progress
;
3402 /* Set to 1 while in lra. */
3403 extern int lra_in_progress
;
3405 /* This macro indicates whether you may create a new
3408 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3411 /* Nonzero after end of regstack pass.
3412 Set to 1 or 0 by reg-stack.c. */
3413 extern int regstack_completed
;
3416 /* If this is nonzero, we do not bother generating VOLATILE
3417 around volatile memory references, and we are willing to
3418 output indirect addresses. If cse is to follow, we reject
3419 indirect addresses so a useful potential cse is generated;
3420 if it is used only once, instruction combination will produce
3421 the same indirect address eventually. */
3422 extern int cse_not_expected
;
3424 /* Translates rtx code to tree code, for those codes needed by
3425 REAL_ARITHMETIC. The function returns an int because the caller may not
3426 know what `enum tree_code' means. */
3428 extern int rtx_to_tree_code (enum rtx_code
);
3431 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3432 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3433 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
3436 extern bool check_for_inc_dec (rtx_insn
*insn
);
3439 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3440 extern bool jump_to_label_p (const rtx_insn
*);
3441 extern int condjump_p (const rtx_insn
*);
3442 extern int any_condjump_p (const rtx_insn
*);
3443 extern int any_uncondjump_p (const rtx_insn
*);
3444 extern rtx
pc_set (const rtx_insn
*);
3445 extern rtx
condjump_label (const rtx_insn
*);
3446 extern int simplejump_p (const rtx_insn
*);
3447 extern int returnjump_p (const rtx_insn
*);
3448 extern int eh_returnjump_p (rtx_insn
*);
3449 extern int onlyjump_p (const rtx_insn
*);
3450 extern int only_sets_cc0_p (const_rtx
);
3451 extern int sets_cc0_p (const_rtx
);
3452 extern int invert_jump_1 (rtx_jump_insn
*, rtx
);
3453 extern int invert_jump (rtx_jump_insn
*, rtx
, int);
3454 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3455 extern int true_regnum (const_rtx
);
3456 extern unsigned int reg_or_subregno (const_rtx
);
3457 extern int redirect_jump_1 (rtx_insn
*, rtx
);
3458 extern void redirect_jump_2 (rtx_jump_insn
*, rtx
, rtx
, int, int);
3459 extern int redirect_jump (rtx_jump_insn
*, rtx
, int);
3460 extern void rebuild_jump_labels (rtx_insn
*);
3461 extern void rebuild_jump_labels_chain (rtx_insn
*);
3462 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
3463 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
3464 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3465 const_rtx
, const_rtx
);
3466 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3467 extern int condjump_in_parallel_p (const rtx_insn
*);
3469 /* In emit-rtl.c. */
3470 extern int max_reg_num (void);
3471 extern int max_label_num (void);
3472 extern int get_first_label_num (void);
3473 extern void maybe_set_first_label_num (rtx
);
3474 extern void delete_insns_since (rtx_insn
*);
3475 extern void mark_reg_pointer (rtx
, int);
3476 extern void mark_user_reg (rtx
);
3477 extern void reset_used_flags (rtx
);
3478 extern void set_used_flags (rtx
);
3479 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3480 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3481 extern int get_max_insn_count (void);
3482 extern int in_sequence_p (void);
3483 extern void init_emit (void);
3484 extern void init_emit_regs (void);
3485 extern void init_derived_machine_modes (void);
3486 extern void init_emit_once (void);
3487 extern void push_topmost_sequence (void);
3488 extern void pop_topmost_sequence (void);
3489 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3490 extern unsigned int unshare_all_rtl (void);
3491 extern void unshare_all_rtl_again (rtx_insn
*);
3492 extern void unshare_all_rtl_in_chain (rtx_insn
*);
3493 extern void verify_rtl_sharing (void);
3494 extern void add_insn (rtx_insn
*);
3495 extern void add_insn_before (rtx
, rtx
, basic_block
);
3496 extern void add_insn_after (rtx
, rtx
, basic_block
);
3497 extern void remove_insn (rtx
);
3498 extern rtx_insn
*emit (rtx
);
3499 extern void emit_insn_at_entry (rtx
);
3500 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
3501 extern rtx
gen_const_mem (machine_mode
, rtx
);
3502 extern rtx
gen_frame_mem (machine_mode
, rtx
);
3503 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
3504 extern bool validate_subreg (machine_mode
, machine_mode
,
3505 const_rtx
, unsigned int);
3508 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
3509 extern rtx
remove_death (unsigned int, rtx_insn
*);
3510 extern void dump_combine_stats (FILE *);
3511 extern void dump_combine_total_stats (FILE *);
3512 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3514 /* In sched-rgn.c. */
3515 extern void schedule_insns (void);
3517 /* In sched-ebb.c. */
3518 extern void schedule_ebbs (void);
3520 /* In sel-sched-dump.c. */
3521 extern void sel_sched_fix_param (const char *param
, const char *val
);
3523 /* In print-rtl.c */
3524 extern const char *print_rtx_head
;
3525 extern void debug (const rtx_def
&ref
);
3526 extern void debug (const rtx_def
*ptr
);
3527 extern void debug_rtx (const_rtx
);
3528 extern void debug_rtx_list (const rtx_insn
*, int);
3529 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3530 extern const rtx_insn
*debug_rtx_find (const rtx_insn
*, int);
3531 extern void print_mem_expr (FILE *, const_tree
);
3532 extern void print_rtl (FILE *, const_rtx
);
3533 extern void print_simple_rtl (FILE *, const_rtx
);
3534 extern int print_rtl_single (FILE *, const_rtx
);
3535 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3536 extern void print_inline_rtx (FILE *, const_rtx
, int);
3538 /* Functions in sched-vis.c. FIXME: Ideally these functions would
3539 not be in sched-vis.c but in rtl.c, because they are not only used
3540 by the scheduler anymore but for all "slim" RTL dumping. */
3541 extern void dump_value_slim (FILE *, const_rtx
, int);
3542 extern void dump_insn_slim (FILE *, const rtx_insn
*);
3543 extern void dump_rtl_slim (FILE *, const rtx_insn
*, const rtx_insn
*,
3545 extern void print_value (pretty_printer
*, const_rtx
, int);
3546 extern void print_pattern (pretty_printer
*, const_rtx
, int);
3547 extern void print_insn (pretty_printer
*, const_rtx
, int);
3548 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
3549 extern const char *str_pattern_slim (const_rtx
);
3552 extern void expand_null_return (void);
3553 extern void expand_naked_return (void);
3554 extern void emit_jump (rtx
);
3557 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3559 extern HOST_WIDE_INT
find_args_size_adjust (rtx_insn
*);
3560 extern int fixup_args_size_notes (rtx_insn
*, rtx_insn
*, int);
3563 extern void init_expmed (void);
3564 extern void expand_inc (rtx
, rtx
);
3565 extern void expand_dec (rtx
, rtx
);
3567 /* In lower-subreg.c */
3568 extern void init_lower_subreg (void);
3571 extern bool can_copy_p (machine_mode
);
3572 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
3573 extern rtx
fis_get_condition (rtx_insn
*);
3577 extern HARD_REG_SET eliminable_regset
;
3579 extern void mark_elimination (int, int);
3582 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3583 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3584 extern void globalize_reg (tree
, int);
3585 extern void init_reg_modes_target (void);
3586 extern void init_regs (void);
3587 extern void reinit_regs (void);
3588 extern void init_fake_stack_mems (void);
3589 extern void save_register_info (void);
3590 extern void init_reg_sets (void);
3591 extern void regclass (rtx
, int);
3592 extern void reg_scan (rtx_insn
*, unsigned int);
3593 extern void fix_register (const char *, int, int);
3595 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
3599 extern int function_invariant_p (const_rtx
);
3609 LCT_RETURNS_TWICE
= 5
3612 extern void emit_library_call (rtx
, enum libcall_type
, machine_mode
, int,
3614 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
3615 machine_mode
, int, ...);
3618 extern void init_varasm_once (void);
3620 extern rtx
make_debug_expr_from_rtl (const_rtx
);
3623 extern bool read_rtx (const char *, rtx
*);
3626 extern rtx
canon_rtx (rtx
);
3627 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
3628 extern rtx
get_addr (rtx
);
3629 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
3631 extern int read_dependence (const_rtx
, const_rtx
);
3632 extern int anti_dependence (const_rtx
, const_rtx
);
3633 extern int canon_anti_dependence (const_rtx
, bool,
3634 const_rtx
, machine_mode
, rtx
);
3635 extern int output_dependence (const_rtx
, const_rtx
);
3636 extern int may_alias_p (const_rtx
, const_rtx
);
3637 extern void init_alias_target (void);
3638 extern void init_alias_analysis (void);
3639 extern void end_alias_analysis (void);
3640 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
3641 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
3642 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
3643 extern bool may_be_sp_based_p (rtx
);
3644 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
3645 extern rtx
get_reg_known_value (unsigned int);
3646 extern bool get_reg_known_equiv_p (unsigned int);
3647 extern rtx
get_reg_base_value (unsigned int);
3650 extern int stack_regs_mentioned (const_rtx insn
);
3654 extern GTY(()) rtx stack_limit_rtx
;
3656 /* In var-tracking.c */
3657 extern unsigned int variable_tracking_main (void);
3659 /* In stor-layout.c. */
3660 extern void get_mode_bounds (machine_mode
, int, machine_mode
,
3664 extern rtx
canon_condition (rtx
);
3665 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
3668 extern unsigned int compute_alignments (void);
3669 extern void update_alignments (vec
<rtx
> &);
3670 extern int asm_str_count (const char *templ
);
3674 rtx (*gen_lowpart
) (machine_mode
, rtx
);
3675 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
3676 rtx (*reg_nonzero_bits
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3677 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
3678 rtx (*reg_num_sign_bit_copies
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3679 unsigned int, unsigned int *);
3680 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
3682 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3685 /* Each pass can provide its own. */
3686 extern struct rtl_hooks rtl_hooks
;
3688 /* ... but then it has to restore these. */
3689 extern const struct rtl_hooks general_rtl_hooks
;
3691 /* Keep this for the nonce. */
3692 #define gen_lowpart rtl_hooks.gen_lowpart
3694 extern void insn_locations_init (void);
3695 extern void insn_locations_finalize (void);
3696 extern void set_curr_insn_location (location_t
);
3697 extern location_t
curr_insn_location (void);
3700 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
3702 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
3705 #define fatal_insn(msgid, insn) \
3706 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3707 #define fatal_insn_not_found(insn) \
3708 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3711 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
3714 /* Information about the function that is propagated by the RTL backend.
3715 Available only for functions that has been already assembled. */
3717 struct GTY(()) cgraph_rtl_info
{
3718 unsigned int preferred_incoming_stack_boundary
;
3720 /* Call unsaved hard registers really used by the corresponding
3721 function (including ones used by functions called by the
3723 HARD_REG_SET function_used_regs
;
3724 /* Set if function_used_regs is valid. */
3725 unsigned function_used_regs_valid
: 1;
3730 #endif /* ! GCC_RTL_H */