1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
24 #include "statistics.h"
29 #include "fixed-value.h"
36 /* Value used by some passes to "recognize" noop moves as valid
38 #define NOOP_MOVE_INSN_CODE INT_MAX
40 /* Register Transfer Language EXPRESSIONS CODES */
42 #define RTX_CODE enum rtx_code
45 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
46 #include "rtl.def" /* rtl expressions are documented here */
49 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
51 Assumes default enum value assignment. */
53 /* The cast here, saves many elsewhere. */
54 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
56 /* Similar, but since generator files get more entries... */
58 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
61 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
64 /* We check bit 0-1 of some rtx class codes in the predicates below. */
66 /* Bit 0 = comparison if 0, arithmetic is 1
67 Bit 1 = 1 if commutative. */
73 /* Must follow the four preceding values. */
80 /* Bit 0 = 1 if constant. */
89 #define RTX_OBJ_MASK (~1)
90 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
91 #define RTX_COMPARE_MASK (~1)
92 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
93 #define RTX_ARITHMETIC_MASK (~1)
94 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
95 #define RTX_BINARY_MASK (~3)
96 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
97 #define RTX_COMMUTATIVE_MASK (~2)
98 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
99 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
101 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
102 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
104 extern const char * const rtx_name
[NUM_RTX_CODE
];
105 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
107 extern const char * const rtx_format
[NUM_RTX_CODE
];
108 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
110 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
111 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
113 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
114 and NEXT_INSN fields). */
115 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
117 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
118 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
120 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
121 relative to which the offsets are calculated, as explained in rtl.def. */
122 struct addr_diff_vec_flags
124 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
125 unsigned min_align
: 8;
127 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
128 unsigned min_after_vec
: 1; /* minimum address target label is
129 after the ADDR_DIFF_VEC. */
130 unsigned max_after_vec
: 1; /* maximum address target label is
131 after the ADDR_DIFF_VEC. */
132 unsigned min_after_base
: 1; /* minimum address target label is
134 unsigned max_after_base
: 1; /* maximum address target label is
136 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
137 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
142 /* Structure used to describe the attributes of a MEM. These are hashed
143 so MEMs that the same attributes share a data structure. This means
144 they cannot be modified in place. */
145 struct GTY(()) mem_attrs
147 /* The expression that the MEM accesses, or null if not known.
148 This expression might be larger than the memory reference itself.
149 (In other words, the MEM might access only part of the object.) */
152 /* The offset of the memory reference from the start of EXPR.
153 Only valid if OFFSET_KNOWN_P. */
154 HOST_WIDE_INT offset
;
156 /* The size of the memory reference in bytes. Only valid if
160 /* The alias set of the memory reference. */
161 alias_set_type alias
;
163 /* The alignment of the reference in bits. Always a multiple of
164 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
165 than the memory reference itself. */
168 /* The address space that the memory reference uses. */
169 unsigned char addrspace
;
171 /* True if OFFSET is known. */
174 /* True if SIZE is known. */
178 /* Structure used to describe the attributes of a REG in similar way as
179 mem_attrs does for MEM above. Note that the OFFSET field is calculated
180 in the same way as for mem_attrs, rather than in the same way as a
181 SUBREG_BYTE. For example, if a big-endian target stores a byte
182 object in the low part of a 4-byte register, the OFFSET field
183 will be -3 rather than 0. */
185 struct GTY(()) reg_attrs
{
186 tree decl
; /* decl corresponding to REG. */
187 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
190 /* Common union for an element of an rtx. */
195 unsigned int rt_uint
;
199 machine_mode rt_type
;
200 addr_diff_vec_flags rt_addr_diff_vec_flags
;
201 struct cselib_val
*rt_cselib
;
206 struct constant_descriptor_rtx
*rt_constant
;
207 struct dw_cfi_node
*rt_cfi
;
210 /* This structure remembers the position of a SYMBOL_REF within an
211 object_block structure. A SYMBOL_REF only provides this information
212 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
213 struct GTY(()) block_symbol
{
214 /* The usual SYMBOL_REF fields. */
215 rtunion
GTY ((skip
)) fld
[2];
217 /* The block that contains this object. */
218 struct object_block
*block
;
220 /* The offset of this object from the start of its block. It is negative
221 if the symbol has not yet been assigned an offset. */
222 HOST_WIDE_INT offset
;
225 /* Describes a group of objects that are to be placed together in such
226 a way that their relative positions are known. */
227 struct GTY((for_user
)) object_block
{
228 /* The section in which these objects should be placed. */
231 /* The alignment of the first object, measured in bits. */
232 unsigned int alignment
;
234 /* The total size of the objects, measured in bytes. */
237 /* The SYMBOL_REFs for each object. The vector is sorted in
238 order of increasing offset and the following conditions will
239 hold for each element X:
241 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
242 !SYMBOL_REF_ANCHOR_P (X)
243 SYMBOL_REF_BLOCK (X) == [address of this structure]
244 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
245 vec
<rtx
, va_gc
> *objects
;
247 /* All the anchor SYMBOL_REFs used to address these objects, sorted
248 in order of increasing offset, and then increasing TLS model.
249 The following conditions will hold for each element X in this vector:
251 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
252 SYMBOL_REF_ANCHOR_P (X)
253 SYMBOL_REF_BLOCK (X) == [address of this structure]
254 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
255 vec
<rtx
, va_gc
> *anchors
;
258 struct GTY((variable_size
)) hwivec_def
{
259 HOST_WIDE_INT elem
[1];
262 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
263 #define CWI_GET_NUM_ELEM(RTX) \
264 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
265 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
266 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
268 /* RTL expression ("rtx"). */
270 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
271 field for for gengtype to recognize that inheritance is occurring,
272 so that all subclasses are redirected to the traversal hook for the
274 However, all of the fields are in the base class, and special-casing
275 is at work. Hence we use desc and tag of 0, generating a switch
276 statement of the form:
279 case 0: // all the work happens here
281 in order to work with the existing special-casing in gengtype. */
283 struct GTY((desc("0"), tag("0"),
284 chain_next ("RTX_NEXT (&%h)"),
285 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
286 /* The kind of expression this is. */
287 ENUM_BITFIELD(rtx_code
) code
: 16;
289 /* The kind of value the expression has. */
290 ENUM_BITFIELD(machine_mode
) mode
: 8;
292 /* 1 in a MEM if we should keep the alias set for this mem unchanged
293 when we access a component.
294 1 in a JUMP_INSN if it is a crossing jump.
295 1 in a CALL_INSN if it is a sibling call.
296 1 in a SET that is for a return.
297 In a CODE_LABEL, part of the two-bit alternate entry field.
298 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
299 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
300 1 in a SUBREG generated by LRA for reload insns.
301 1 in a CALL for calls instrumented by Pointer Bounds Checker. */
302 unsigned int jump
: 1;
303 /* In a CODE_LABEL, part of the two-bit alternate entry field.
304 1 in a MEM if it cannot trap.
305 1 in a CALL_INSN logically equivalent to
306 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
307 unsigned int call
: 1;
308 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
309 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
310 1 in a SYMBOL_REF if it addresses something in the per-function
312 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
313 1 in a NOTE, or EXPR_LIST for a const call.
314 1 in a JUMP_INSN of an annulling branch.
315 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
316 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
317 1 in a clobber temporarily created for LRA. */
318 unsigned int unchanging
: 1;
319 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
320 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
321 if it has been deleted.
322 1 in a REG expression if corresponds to a variable declared by the user,
323 0 for an internally generated temporary.
324 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
325 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
327 In a SYMBOL_REF, this flag is used for machine-specific purposes.
328 In a PREFETCH, this flag indicates that it should be considered a scheduling
330 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
331 unsigned int volatil
: 1;
332 /* 1 in a REG if the register is used only in exit code a loop.
333 1 in a SUBREG expression if was generated from a variable with a
335 1 in a CODE_LABEL if the label is used for nonlocal gotos
336 and must not be deleted even if its count is zero.
337 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
338 together with the preceding insn. Valid only within sched.
339 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
340 from the target of a branch. Valid from reorg until end of compilation;
343 The name of the field is historical. It used to be used in MEMs
344 to record whether the MEM accessed part of a structure. */
345 unsigned int in_struct
: 1;
346 /* At the end of RTL generation, 1 if this rtx is used. This is used for
347 copying shared structure. See `unshare_all_rtl'.
348 In a REG, this is not needed for that purpose, and used instead
349 in `leaf_renumber_regs_insn'.
350 1 in a SYMBOL_REF, means that emit_library_call
351 has used it as the function.
352 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
353 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
354 unsigned int used
: 1;
355 /* 1 in an INSN or a SET if this rtx is related to the call frame,
356 either changing how we compute the frame address or saving and
357 restoring registers in the prologue and epilogue.
358 1 in a REG or MEM if it is a pointer.
359 1 in a SYMBOL_REF if it addresses something in the per-function
360 constant string pool.
361 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
362 unsigned frame_related
: 1;
363 /* 1 in a REG or PARALLEL that is the current function's return value.
364 1 in a SYMBOL_REF for a weak symbol.
365 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
366 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
367 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
368 unsigned return_val
: 1;
371 /* The final union field is aligned to 64 bits on LP64 hosts,
372 giving a 32-bit gap after the fields above. We optimize the
373 layout for that case and use the gap for extra code-specific
376 /* The ORIGINAL_REGNO of a REG. */
377 unsigned int original_regno
;
379 /* The INSN_UID of an RTX_INSN-class code. */
382 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
383 unsigned int symbol_ref_flags
;
385 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
386 enum var_init_status var_location_status
;
388 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
389 HOST_WIDE_INTs in the hwivec_def. */
390 unsigned int num_elem
;
393 /* The first element of the operands of this rtx.
394 The number of operands and their types are controlled
395 by the `code' field, according to rtl.def. */
398 HOST_WIDE_INT hwint
[1];
399 struct block_symbol block_sym
;
400 struct real_value rv
;
401 struct fixed_value fv
;
402 struct hwivec_def hwiv
;
403 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
406 /* A node for constructing singly-linked lists of rtx. */
408 class GTY(()) rtx_expr_list
: public rtx_def
410 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
413 /* Get next in list. */
414 rtx_expr_list
*next () const;
416 /* Get at the underlying rtx. */
417 rtx
element () const;
423 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
425 return rt
->code
== EXPR_LIST
;
428 class GTY(()) rtx_insn_list
: public rtx_def
430 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
432 This is an instance of:
434 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
436 i.e. a node for constructing singly-linked lists of rtx_insn *, where
437 the list is "external" to the insn (as opposed to the doubly-linked
438 list embedded within rtx_insn itself). */
441 /* Get next in list. */
442 rtx_insn_list
*next () const;
444 /* Get at the underlying instruction. */
445 rtx_insn
*insn () const;
452 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
454 return rt
->code
== INSN_LIST
;
457 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
458 typically (but not always) of rtx_insn *, used in the late passes. */
460 class GTY(()) rtx_sequence
: public rtx_def
462 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
465 /* Get number of elements in sequence. */
468 /* Get i-th element of the sequence. */
469 rtx
element (int index
) const;
471 /* Get i-th element of the sequence, with a checked cast to
473 rtx_insn
*insn (int index
) const;
479 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
481 return rt
->code
== SEQUENCE
;
487 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
489 return rt
->code
== SEQUENCE
;
492 class GTY(()) rtx_insn
: public rtx_def
495 /* No extra fields, but adds the invariant:
499 || JUMP_TABLE_DATA_P (X)
503 i.e. that we must be able to use the following:
507 i.e. we have an rtx that has an INSN_UID field and can be part of
508 a linked list of insns.
511 /* Returns true if this insn has been deleted. */
513 bool deleted () const { return volatil
; }
515 /* Mark this insn as deleted. */
517 void set_deleted () { volatil
= true; }
519 /* Mark this insn as not deleted. */
521 void set_undeleted () { volatil
= false; }
524 /* Subclasses of rtx_insn. */
526 class GTY(()) rtx_debug_insn
: public rtx_insn
528 /* No extra fields, but adds the invariant:
529 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
530 i.e. an annotation for tracking variable assignments.
532 This is an instance of:
533 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
537 class GTY(()) rtx_nonjump_insn
: public rtx_insn
539 /* No extra fields, but adds the invariant:
540 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
541 i.e an instruction that cannot jump.
543 This is an instance of:
544 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
548 class GTY(()) rtx_jump_insn
: public rtx_insn
550 /* No extra fields, but adds the invariant:
551 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
552 i.e. an instruction that can possibly jump.
554 This is an instance of:
555 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
559 class GTY(()) rtx_call_insn
: public rtx_insn
561 /* No extra fields, but adds the invariant:
562 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
563 i.e. an instruction that can possibly call a subroutine
564 but which will not change which instruction comes next
565 in the current function.
567 This is an instance of:
568 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
572 class GTY(()) rtx_jump_table_data
: public rtx_insn
574 /* No extra fields, but adds the invariant:
575 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
576 i.e. a data for a jump table, considered an instruction for
579 This is an instance of:
580 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
585 /* This can be either:
587 (a) a table of absolute jumps, in which case PATTERN (this) is an
588 ADDR_VEC with arg 0 a vector of labels, or
590 (b) a table of relative jumps (e.g. for -fPIC), in which case
591 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
592 arg 1 the vector of labels.
594 This method gets the underlying vec. */
596 inline rtvec
get_labels () const;
599 class GTY(()) rtx_barrier
: public rtx_insn
601 /* No extra fields, but adds the invariant:
602 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
603 i.e. a marker that indicates that control will not flow through.
605 This is an instance of:
606 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
610 class GTY(()) rtx_code_label
: public rtx_insn
612 /* No extra fields, but adds the invariant:
613 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
614 i.e. a label in the assembler.
616 This is an instance of:
617 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
621 class GTY(()) rtx_note
: public rtx_insn
623 /* No extra fields, but adds the invariant:
624 NOTE_P(X) aka (GET_CODE (X) == NOTE)
625 i.e. a note about the corresponding source code.
627 This is an instance of:
628 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
632 /* The size in bytes of an rtx header (code, mode and flags). */
633 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
635 /* The size in bytes of an rtx with code CODE. */
636 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
638 #define NULL_RTX (rtx) 0
640 /* The "next" and "previous" RTX, relative to this one. */
642 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
643 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
645 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
647 #define RTX_PREV(X) ((INSN_P (X) \
649 || JUMP_TABLE_DATA_P (X) \
652 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
653 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
654 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
656 /* Define macros to access the `code' field of the rtx. */
658 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
659 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
661 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
662 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
664 /* RTL vector. These appear inside RTX's when there is a need
665 for a variable number of things. The principle use is inside
666 PARALLEL expressions. */
668 struct GTY(()) rtvec_def
{
669 int num_elem
; /* number of elements */
670 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
673 #define NULL_RTVEC (rtvec) 0
675 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
676 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
678 /* Predicate yielding nonzero iff X is an rtx for a register. */
679 #define REG_P(X) (GET_CODE (X) == REG)
681 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
682 #define MEM_P(X) (GET_CODE (X) == MEM)
684 #if TARGET_SUPPORTS_WIDE_INT
686 /* Match CONST_*s that can represent compile-time constant integers. */
687 #define CASE_CONST_SCALAR_INT \
691 /* Match CONST_*s for which pointer equality corresponds to value
693 #define CASE_CONST_UNIQUE \
695 case CONST_WIDE_INT: \
699 /* Match all CONST_* rtxes. */
700 #define CASE_CONST_ANY \
702 case CONST_WIDE_INT: \
709 /* Match CONST_*s that can represent compile-time constant integers. */
710 #define CASE_CONST_SCALAR_INT \
714 /* Match CONST_*s for which pointer equality corresponds to value
716 #define CASE_CONST_UNIQUE \
721 /* Match all CONST_* rtxes. */
722 #define CASE_CONST_ANY \
729 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
730 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
732 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
733 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
735 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
736 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
738 /* Predicate yielding true iff X is an rtx for a double-int
739 or floating point constant. */
740 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
742 /* Predicate yielding true iff X is an rtx for a double-int. */
743 #define CONST_DOUBLE_AS_INT_P(X) \
744 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
746 /* Predicate yielding true iff X is an rtx for a integer const. */
747 #if TARGET_SUPPORTS_WIDE_INT
748 #define CONST_SCALAR_INT_P(X) \
749 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
751 #define CONST_SCALAR_INT_P(X) \
752 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
755 /* Predicate yielding true iff X is an rtx for a double-int. */
756 #define CONST_DOUBLE_AS_FLOAT_P(X) \
757 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
759 /* Predicate yielding nonzero iff X is a label insn. */
760 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
762 /* Predicate yielding nonzero iff X is a jump insn. */
763 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
765 /* Predicate yielding nonzero iff X is a call insn. */
766 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
768 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
769 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
771 /* Predicate yielding nonzero iff X is a debug note/insn. */
772 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
774 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
775 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
777 /* Nonzero if DEBUG_INSN_P may possibly hold. */
778 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
780 /* Predicate yielding nonzero iff X is a real insn. */
782 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
784 /* Predicate yielding nonzero iff X is a note insn. */
785 #define NOTE_P(X) (GET_CODE (X) == NOTE)
787 /* Predicate yielding nonzero iff X is a barrier insn. */
788 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
790 /* Predicate yielding nonzero iff X is a data for a jump table. */
791 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
793 /* Predicate yielding nonzero iff RTX is a subreg. */
794 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
799 is_a_helper
<rtx_insn
*>::test (rtx rt
)
803 || JUMP_TABLE_DATA_P (rt
)
811 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
815 || JUMP_TABLE_DATA_P (rt
)
823 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
825 return DEBUG_INSN_P (rt
);
831 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
833 return NONJUMP_INSN_P (rt
);
839 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
847 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
855 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
857 return CALL_P (insn
);
863 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
865 return JUMP_TABLE_DATA_P (rt
);
871 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
873 return JUMP_TABLE_DATA_P (insn
);
879 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
881 return BARRIER_P (rt
);
887 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
895 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
897 return LABEL_P (insn
);
903 is_a_helper
<rtx_note
*>::test (rtx rt
)
911 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
913 return NOTE_P (insn
);
916 /* Predicate yielding nonzero iff X is a return or simple_return. */
917 #define ANY_RETURN_P(X) \
918 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
920 /* 1 if X is a unary operator. */
923 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
925 /* 1 if X is a binary operator. */
927 #define BINARY_P(X) \
928 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
930 /* 1 if X is an arithmetic operator. */
932 #define ARITHMETIC_P(X) \
933 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
934 == RTX_ARITHMETIC_RESULT)
936 /* 1 if X is an arithmetic operator. */
938 #define COMMUTATIVE_ARITH_P(X) \
939 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
941 /* 1 if X is a commutative arithmetic operator or a comparison operator.
942 These two are sometimes selected together because it is possible to
943 swap the two operands. */
945 #define SWAPPABLE_OPERANDS_P(X) \
946 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
947 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
948 | (1 << RTX_COMPARE)))
950 /* 1 if X is a non-commutative operator. */
952 #define NON_COMMUTATIVE_P(X) \
953 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
954 == RTX_NON_COMMUTATIVE_RESULT)
956 /* 1 if X is a commutative operator on integers. */
958 #define COMMUTATIVE_P(X) \
959 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
960 == RTX_COMMUTATIVE_RESULT)
962 /* 1 if X is a relational operator. */
964 #define COMPARISON_P(X) \
965 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
967 /* 1 if X is a constant value that is an integer. */
969 #define CONSTANT_P(X) \
970 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
972 /* 1 if X can be used to represent an object. */
973 #define OBJECT_P(X) \
974 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
976 /* General accessor macros for accessing the fields of an rtx. */
978 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
979 /* The bit with a star outside the statement expr and an & inside is
980 so that N can be evaluated only once. */
981 #define RTL_CHECK1(RTX, N, C1) __extension__ \
982 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
983 const enum rtx_code _code = GET_CODE (_rtx); \
984 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
985 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
987 if (GET_RTX_FORMAT (_code)[_n] != C1) \
988 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
990 &_rtx->u.fld[_n]; }))
992 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
993 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
994 const enum rtx_code _code = GET_CODE (_rtx); \
995 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
996 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
998 if (GET_RTX_FORMAT (_code)[_n] != C1 \
999 && GET_RTX_FORMAT (_code)[_n] != C2) \
1000 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1002 &_rtx->u.fld[_n]; }))
1004 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1005 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1006 if (GET_CODE (_rtx) != (C)) \
1007 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1009 &_rtx->u.fld[_n]; }))
1011 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1012 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1013 const enum rtx_code _code = GET_CODE (_rtx); \
1014 if (_code != (C1) && _code != (C2)) \
1015 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1017 &_rtx->u.fld[_n]; }))
1019 #define RTVEC_ELT(RTVEC, I) __extension__ \
1020 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1021 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1022 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1024 &_rtvec->elem[_i]; }))
1026 #define XWINT(RTX, N) __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] != 'w') \
1033 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1035 &_rtx->u.hwint[_n]; }))
1037 #define CWI_ELT(RTX, I) __extension__ \
1038 (*({ __typeof (RTX) const _cwi = (RTX); \
1039 int _max = CWI_GET_NUM_ELEM (_cwi); \
1040 const int _i = (I); \
1041 if (_i < 0 || _i >= _max) \
1042 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1044 &_cwi->u.hwiv.elem[_i]; }))
1046 #define XCWINT(RTX, N, C) __extension__ \
1047 (*({ __typeof (RTX) const _rtx = (RTX); \
1048 if (GET_CODE (_rtx) != (C)) \
1049 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1051 &_rtx->u.hwint[N]; }))
1053 #define XCMWINT(RTX, N, C, M) __extension__ \
1054 (*({ __typeof (RTX) const _rtx = (RTX); \
1055 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1056 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1057 __LINE__, __FUNCTION__); \
1058 &_rtx->u.hwint[N]; }))
1060 #define XCNMPRV(RTX, C, M) __extension__ \
1061 ({ __typeof (RTX) const _rtx = (RTX); \
1062 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1063 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1064 __LINE__, __FUNCTION__); \
1067 #define XCNMPFV(RTX, C, M) __extension__ \
1068 ({ __typeof (RTX) const _rtx = (RTX); \
1069 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1070 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1071 __LINE__, __FUNCTION__); \
1074 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1075 ({ __typeof (RTX) const _symbol = (RTX); \
1076 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1077 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1078 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1080 &_symbol->u.block_sym; })
1082 #define HWIVEC_CHECK(RTX,C) __extension__ \
1083 ({ __typeof (RTX) const _symbol = (RTX); \
1084 RTL_CHECKC1 (_symbol, 0, C); \
1085 &_symbol->u.hwiv; })
1087 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1090 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1093 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1096 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1099 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1100 const char *, int, const char *)
1102 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1103 bool, const char *, int, const char *)
1105 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1107 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1110 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1114 #else /* not ENABLE_RTL_CHECKING */
1116 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1117 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1118 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1119 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1120 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1121 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1122 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1123 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1124 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1125 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1126 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1127 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1128 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1129 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1133 /* General accessor macros for accessing the flags of an rtx. */
1135 /* Access an individual rtx flag, with no checking of any kind. */
1136 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1138 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1139 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1140 ({ __typeof (RTX) const _rtx = (RTX); \
1141 if (GET_CODE (_rtx) != C1) \
1142 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1146 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1147 ({ __typeof (RTX) const _rtx = (RTX); \
1148 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1149 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1153 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1154 ({ __typeof (RTX) const _rtx = (RTX); \
1155 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1156 && GET_CODE (_rtx) != C3) \
1157 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1161 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1162 ({ __typeof (RTX) const _rtx = (RTX); \
1163 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1164 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1165 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1169 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1170 ({ __typeof (RTX) const _rtx = (RTX); \
1171 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1172 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1173 && GET_CODE (_rtx) != C5) \
1174 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1178 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1180 ({ __typeof (RTX) const _rtx = (RTX); \
1181 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1182 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1183 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1184 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1188 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1190 ({ __typeof (RTX) const _rtx = (RTX); \
1191 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1192 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1193 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1194 && GET_CODE (_rtx) != C7) \
1195 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1199 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1201 ({ __typeof (RTX) const _rtx = (RTX); \
1202 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1203 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1207 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1212 #else /* not ENABLE_RTL_FLAG_CHECKING */
1214 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1215 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1216 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1217 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1218 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1219 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1220 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1221 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1224 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1225 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1226 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1227 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1228 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1229 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1230 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1231 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1232 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1233 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1235 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1236 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1238 /* These are like XINT, etc. except that they expect a '0' field instead
1239 of the normal type code. */
1241 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1242 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1243 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1244 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1245 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1246 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1247 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1248 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1249 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1250 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1251 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1252 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg)
1253 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1255 /* Access a '0' field with any type. */
1256 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1258 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1259 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1260 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1261 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1262 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1263 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1264 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1265 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1266 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1267 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1269 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1270 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1272 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1275 /* Methods of rtx_expr_list. */
1277 inline rtx_expr_list
*rtx_expr_list::next () const
1279 rtx tmp
= XEXP (this, 1);
1280 return safe_as_a
<rtx_expr_list
*> (tmp
);
1283 inline rtx
rtx_expr_list::element () const
1285 return XEXP (this, 0);
1288 /* Methods of rtx_insn_list. */
1290 inline rtx_insn_list
*rtx_insn_list::next () const
1292 rtx tmp
= XEXP (this, 1);
1293 return safe_as_a
<rtx_insn_list
*> (tmp
);
1296 inline rtx_insn
*rtx_insn_list::insn () const
1298 rtx tmp
= XEXP (this, 0);
1299 return safe_as_a
<rtx_insn
*> (tmp
);
1302 /* Methods of rtx_sequence. */
1304 inline int rtx_sequence::len () const
1306 return XVECLEN (this, 0);
1309 inline rtx
rtx_sequence::element (int index
) const
1311 return XVECEXP (this, 0, index
);
1314 inline rtx_insn
*rtx_sequence::insn (int index
) const
1316 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1319 /* ACCESS MACROS for particular fields of insns. */
1321 /* Holds a unique number for each insn.
1322 These are not necessarily sequentially increasing. */
1323 inline int INSN_UID (const_rtx insn
)
1325 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1326 (insn
))->u2
.insn_uid
;
1328 inline int& INSN_UID (rtx insn
)
1330 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1331 (insn
))->u2
.insn_uid
;
1334 /* Chain insns together in sequence. */
1336 /* For now these are split in two: an rvalue form:
1339 SET_NEXT_INSN/SET_PREV_INSN. */
1341 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1343 rtx prev
= XEXP (insn
, 0);
1344 return safe_as_a
<rtx_insn
*> (prev
);
1347 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1349 return XEXP (insn
, 0);
1352 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1354 rtx next
= XEXP (insn
, 1);
1355 return safe_as_a
<rtx_insn
*> (next
);
1358 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1360 return XEXP (insn
, 1);
1363 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1365 return XBBDEF (insn
, 2);
1368 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1370 return XBBDEF (insn
, 2);
1373 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1375 BLOCK_FOR_INSN (insn
) = bb
;
1378 /* The body of an insn. */
1379 inline rtx
PATTERN (const_rtx insn
)
1381 return XEXP (insn
, 3);
1384 inline rtx
& PATTERN (rtx insn
)
1386 return XEXP (insn
, 3);
1389 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1391 return XUINT (insn
, 4);
1394 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1396 return XUINT (insn
, 4);
1399 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1401 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1404 /* LOCATION of an RTX if relevant. */
1405 #define RTL_LOCATION(X) (INSN_P (X) ? \
1406 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1409 /* Code number of instruction, from when it was recognized.
1410 -1 means this instruction has not been recognized yet. */
1411 #define INSN_CODE(INSN) XINT (INSN, 5)
1413 inline rtvec
rtx_jump_table_data::get_labels () const
1415 rtx pat
= PATTERN (this);
1416 if (GET_CODE (pat
) == ADDR_VEC
)
1417 return XVEC (pat
, 0);
1419 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1422 #define RTX_FRAME_RELATED_P(RTX) \
1423 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1424 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1426 /* 1 if JUMP RTX is a crossing jump. */
1427 #define CROSSING_JUMP_P(RTX) \
1428 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1430 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1432 #define RTL_CONST_CALL_P(RTX) \
1433 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1435 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1437 #define RTL_PURE_CALL_P(RTX) \
1438 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1440 /* 1 if RTX is a call to a const or pure function. */
1441 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1442 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1444 /* 1 if RTX is a call to a looping const or pure function. Built from
1445 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1446 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1447 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1449 /* 1 if RTX is a call_insn for a sibling call. */
1450 #define SIBLING_CALL_P(RTX) \
1451 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1453 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1454 #define INSN_ANNULLED_BRANCH_P(RTX) \
1455 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1457 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1458 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1459 executed if the branch is taken. For annulled branches with this bit
1460 clear, the insn should be executed only if the branch is not taken. */
1461 #define INSN_FROM_TARGET_P(RTX) \
1462 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1463 CALL_INSN)->in_struct)
1465 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1466 See the comments for ADDR_DIFF_VEC in rtl.def. */
1467 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1469 /* In a VALUE, the value cselib has assigned to RTX.
1470 This is a "struct cselib_val", see cselib.h. */
1471 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1473 /* Holds a list of notes on what this insn does to various REGs.
1474 It is a chain of EXPR_LIST rtx's, where the second operand is the
1475 chain pointer and the first operand is the REG being described.
1476 The mode field of the EXPR_LIST contains not a real machine mode
1477 but a value from enum reg_note. */
1478 #define REG_NOTES(INSN) XEXP(INSN, 6)
1480 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1482 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1486 #define DEF_REG_NOTE(NAME) NAME,
1487 #include "reg-notes.def"
1492 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1493 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1494 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1495 PUT_MODE (LINK, (machine_mode) (KIND))
1497 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1499 extern const char * const reg_note_name
[];
1500 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1502 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1503 USE and CLOBBER expressions.
1504 USE expressions list the registers filled with arguments that
1505 are passed to the function.
1506 CLOBBER expressions document the registers explicitly clobbered
1508 Pseudo registers can not be mentioned in this list. */
1509 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1511 /* The label-number of a code-label. The assembler label
1512 is made from `L' and the label-number printed in decimal.
1513 Label numbers are unique in a compilation. */
1514 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1516 /* In a NOTE that is a line number, this is a string for the file name that the
1517 line is in. We use the same field to record block numbers temporarily in
1518 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1519 between ints and pointers if we use a different macro for the block number.)
1523 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1524 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1525 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1526 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1527 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1528 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1529 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1530 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1531 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1533 /* In a NOTE that is a line number, this is the line number.
1534 Other kinds of NOTEs are identified by negative numbers here. */
1535 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1537 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1538 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1539 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1541 /* Variable declaration and the location of a variable. */
1542 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1543 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1545 /* Initialization status of the variable in the location. Status
1546 can be unknown, uninitialized or initialized. See enumeration
1548 #define PAT_VAR_LOCATION_STATUS(PAT) \
1549 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1550 ->u2.var_location_status)
1552 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1553 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1554 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1555 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1556 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1557 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1558 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1560 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1561 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1563 /* Accessors for a tree-expanded var location debug insn. */
1564 #define INSN_VAR_LOCATION_DECL(INSN) \
1565 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1566 #define INSN_VAR_LOCATION_LOC(INSN) \
1567 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1568 #define INSN_VAR_LOCATION_STATUS(INSN) \
1569 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1571 /* Expand to the RTL that denotes an unknown variable location in a
1573 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1575 /* Determine whether X is such an unknown location. */
1576 #define VAR_LOC_UNKNOWN_P(X) \
1577 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1579 /* 1 if RTX is emitted after a call, but it should take effect before
1580 the call returns. */
1581 #define NOTE_DURING_CALL_P(RTX) \
1582 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1584 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1585 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1587 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1588 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1590 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1591 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1593 /* Codes that appear in the NOTE_KIND field for kinds of notes
1594 that are not line numbers. These codes are all negative.
1596 Notice that we do not try to use zero here for any of
1597 the special note codes because sometimes the source line
1598 actually can be zero! This happens (for example) when we
1599 are generating code for the per-translation-unit constructor
1600 and destructor routines for some C++ translation unit. */
1604 #define DEF_INSN_NOTE(NAME) NAME,
1605 #include "insn-notes.def"
1606 #undef DEF_INSN_NOTE
1611 /* Names for NOTE insn's other than line numbers. */
1613 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1614 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1615 (note_insn_name[(NOTE_CODE)])
1617 /* The name of a label, in case it corresponds to an explicit label
1618 in the input source code. */
1619 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1621 /* In jump.c, each label contains a count of the number
1622 of LABEL_REFs that point at it, so unused labels can be deleted. */
1623 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1625 /* Labels carry a two-bit field composed of the ->jump and ->call
1626 bits. This field indicates whether the label is an alternate
1627 entry point, and if so, what kind. */
1630 LABEL_NORMAL
= 0, /* ordinary label */
1631 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1632 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1633 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1636 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1638 /* Retrieve the kind of LABEL. */
1639 #define LABEL_KIND(LABEL) __extension__ \
1640 ({ __typeof (LABEL) const _label = (LABEL); \
1641 if (! LABEL_P (_label)) \
1642 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1644 (enum label_kind) ((_label->jump << 1) | _label->call); })
1646 /* Set the kind of LABEL. */
1647 #define SET_LABEL_KIND(LABEL, KIND) do { \
1648 __typeof (LABEL) const _label = (LABEL); \
1649 const unsigned int _kind = (KIND); \
1650 if (! LABEL_P (_label)) \
1651 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1653 _label->jump = ((_kind >> 1) & 1); \
1654 _label->call = (_kind & 1); \
1659 /* Retrieve the kind of LABEL. */
1660 #define LABEL_KIND(LABEL) \
1661 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1663 /* Set the kind of LABEL. */
1664 #define SET_LABEL_KIND(LABEL, KIND) do { \
1665 rtx const _label = (LABEL); \
1666 const unsigned int _kind = (KIND); \
1667 _label->jump = ((_kind >> 1) & 1); \
1668 _label->call = (_kind & 1); \
1671 #endif /* rtl flag checking */
1673 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1675 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1676 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1677 be decremented and possibly the label can be deleted. */
1678 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1680 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1682 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1685 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1686 goes through all the LABEL_REFs that jump to that label. The chain
1687 eventually winds up at the CODE_LABEL: it is circular. */
1688 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1690 /* Get the label that a LABEL_REF references. */
1691 #define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF)
1694 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1695 be used on RHS. Use SET_REGNO to change the value. */
1696 #define REGNO(RTX) (rhs_regno(RTX))
1697 #define SET_REGNO(RTX,N) \
1698 (df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
1699 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
1701 /* ORIGINAL_REGNO holds the number the register originally had; for a
1702 pseudo register turned into a hard reg this will hold the old pseudo
1704 #define ORIGINAL_REGNO(RTX) \
1705 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1707 /* Force the REGNO macro to only be used on the lhs. */
1708 static inline unsigned int
1709 rhs_regno (const_rtx x
)
1711 return XCUINT (x
, 0, REG
);
1715 /* 1 if RTX is a reg or parallel that is the current function's return
1717 #define REG_FUNCTION_VALUE_P(RTX) \
1718 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1720 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1721 #define REG_USERVAR_P(RTX) \
1722 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1724 /* 1 if RTX is a reg that holds a pointer value. */
1725 #define REG_POINTER(RTX) \
1726 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1728 /* 1 if RTX is a mem that holds a pointer value. */
1729 #define MEM_POINTER(RTX) \
1730 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1732 /* 1 if the given register REG corresponds to a hard register. */
1733 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1735 /* 1 if the given register number REG_NO corresponds to a hard register. */
1736 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1738 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1739 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1740 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1742 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1743 elements actually needed to represent the constant.
1744 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1745 significant HOST_WIDE_INT. */
1746 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1747 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1748 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1750 /* For a CONST_DOUBLE:
1751 #if TARGET_SUPPORTS_WIDE_INT == 0
1752 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1753 low-order word and ..._HIGH the high-order.
1755 For a float, there is a REAL_VALUE_TYPE structure, and
1756 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1757 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1758 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1759 #define CONST_DOUBLE_REAL_VALUE(r) \
1760 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1762 #define CONST_FIXED_VALUE(r) \
1763 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1764 #define CONST_FIXED_VALUE_HIGH(r) \
1765 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1766 #define CONST_FIXED_VALUE_LOW(r) \
1767 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1769 /* For a CONST_VECTOR, return element #n. */
1770 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1772 /* For a CONST_VECTOR, return the number of elements in a vector. */
1773 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1775 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1776 SUBREG_BYTE extracts the byte-number. */
1778 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1779 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1782 /* Return the right cost to give to an operation
1783 to make the cost of the corresponding register-to-register instruction
1784 N times that of a fast register-to-register instruction. */
1785 #define COSTS_N_INSNS(N) ((N) * 4)
1787 /* Maximum cost of an rtl expression. This value has the special meaning
1788 not to use an rtx with this cost under any circumstances. */
1789 #define MAX_COST INT_MAX
1791 /* A structure to hold all available cost information about an rtl
1793 struct full_rtx_costs
1799 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1801 init_costs_to_max (struct full_rtx_costs
*c
)
1803 c
->speed
= MAX_COST
;
1807 /* Initialize a full_rtx_costs structure C to zero cost. */
1809 init_costs_to_zero (struct full_rtx_costs
*c
)
1815 /* Compare two full_rtx_costs structures A and B, returning true
1816 if A < B when optimizing for speed. */
1818 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1822 return (a
->speed
< b
->speed
1823 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1825 return (a
->size
< b
->size
1826 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1829 /* Increase both members of the full_rtx_costs structure C by the
1832 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1834 c
->speed
+= COSTS_N_INSNS (n
);
1835 c
->size
+= COSTS_N_INSNS (n
);
1838 /* Describes the shape of a subreg:
1840 inner_mode == the mode of the SUBREG_REG
1841 offset == the SUBREG_BYTE
1842 outer_mode == the mode of the SUBREG itself. */
1843 struct subreg_shape
{
1844 subreg_shape (machine_mode
, unsigned int, machine_mode
);
1845 bool operator == (const subreg_shape
&) const;
1846 bool operator != (const subreg_shape
&) const;
1847 unsigned int unique_id () const;
1849 machine_mode inner_mode
;
1850 unsigned int offset
;
1851 machine_mode outer_mode
;
1855 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
1856 unsigned int offset_in
,
1857 machine_mode outer_mode_in
)
1858 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
1862 subreg_shape::operator == (const subreg_shape
&other
) const
1864 return (inner_mode
== other
.inner_mode
1865 && offset
== other
.offset
1866 && outer_mode
== other
.outer_mode
);
1870 subreg_shape::operator != (const subreg_shape
&other
) const
1872 return !operator == (other
);
1875 /* Return an integer that uniquely identifies this shape. Structures
1876 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
1877 current mode is anywhere near being 65536 bytes in size, so the
1878 id comfortably fits in an int. */
1881 subreg_shape::unique_id () const
1883 STATIC_ASSERT (MAX_MACHINE_MODE
<= 256);
1884 return (int) inner_mode
+ ((int) outer_mode
<< 8) + (offset
<< 16);
1887 /* Return the shape of a SUBREG rtx. */
1889 static inline subreg_shape
1890 shape_of_subreg (const_rtx x
)
1892 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
1893 SUBREG_BYTE (x
), GET_MODE (x
));
1896 /* Information about an address. This structure is supposed to be able
1897 to represent all supported target addresses. Please extend it if it
1898 is not yet general enough. */
1899 struct address_info
{
1900 /* The mode of the value being addressed, or VOIDmode if this is
1901 a load-address operation with no known address mode. */
1904 /* The address space. */
1907 /* A pointer to the top-level address. */
1910 /* A pointer to the inner address, after all address mutations
1911 have been stripped from the top-level address. It can be one
1914 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
1916 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
1917 points to the step value, depending on whether the step is variable
1918 or constant respectively. SEGMENT is null.
1920 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
1921 with null fields evaluating to 0. */
1924 /* Components that make up *INNER. Each one may be null or nonnull.
1925 When nonnull, their meanings are as follows:
1927 - *SEGMENT is the "segment" of memory to which the address refers.
1928 This value is entirely target-specific and is only called a "segment"
1929 because that's its most typical use. It contains exactly one UNSPEC,
1930 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
1933 - *BASE is a variable expression representing a base address.
1934 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
1936 - *INDEX is a variable expression representing an index value.
1937 It may be a scaled expression, such as a MULT. It has exactly
1938 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
1940 - *DISP is a constant, possibly mutated. DISP_TERM points to the
1941 unmutated RTX_CONST_OBJ. */
1952 /* In a {PRE,POST}_MODIFY address, this points to a second copy
1953 of BASE_TERM, otherwise it is null. */
1956 /* ADDRESS if this structure describes an address operand, MEM if
1957 it describes a MEM address. */
1958 enum rtx_code addr_outer_code
;
1960 /* If BASE is nonnull, this is the code of the rtx that contains it. */
1961 enum rtx_code base_outer_code
;
1963 /* True if this is an RTX_AUTOINC address. */
1967 /* This is used to bundle an rtx and a mode together so that the pair
1968 can be used with the wi:: routines. If we ever put modes into rtx
1969 integer constants, this should go away and then just pass an rtx in. */
1970 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
1975 struct int_traits
<rtx_mode_t
>
1977 static const enum precision_type precision_type
= VAR_PRECISION
;
1978 static const bool host_dependent_precision
= false;
1979 /* This ought to be true, except for the special case that BImode
1980 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
1981 static const bool is_sign_extended
= false;
1982 static unsigned int get_precision (const rtx_mode_t
&);
1983 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
1984 const rtx_mode_t
&);
1989 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
1991 return GET_MODE_PRECISION (x
.second
);
1994 inline wi::storage_ref
1995 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
1996 unsigned int precision
,
1997 const rtx_mode_t
&x
)
1999 gcc_checking_assert (precision
== get_precision (x
));
2000 switch (GET_CODE (x
.first
))
2003 if (precision
< HOST_BITS_PER_WIDE_INT
)
2004 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2005 targets is 1 rather than -1. */
2006 gcc_checking_assert (INTVAL (x
.first
)
2007 == sext_hwi (INTVAL (x
.first
), precision
)
2008 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2010 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2012 case CONST_WIDE_INT
:
2013 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2014 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2016 #if TARGET_SUPPORTS_WIDE_INT == 0
2018 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2028 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2029 wide_int
min_value (machine_mode
, signop
);
2030 wide_int
max_value (machine_mode
, signop
);
2033 inline wi::hwi_with_prec
2034 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2036 return shwi (val
, GET_MODE_PRECISION (mode
));
2039 /* Produce the smallest number that is represented in MODE. The precision
2040 is taken from MODE and the sign from SGN. */
2042 wi::min_value (machine_mode mode
, signop sgn
)
2044 return min_value (GET_MODE_PRECISION (mode
), sgn
);
2047 /* Produce the largest number that is represented in MODE. The precision
2048 is taken from MODE and the sign from SGN. */
2050 wi::max_value (machine_mode mode
, signop sgn
)
2052 return max_value (GET_MODE_PRECISION (mode
), sgn
);
2055 extern void init_rtlanal (void);
2056 extern int rtx_cost (rtx
, enum rtx_code
, int, bool);
2057 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2058 extern void get_full_rtx_cost (rtx
, enum rtx_code
, int,
2059 struct full_rtx_costs
*);
2060 extern unsigned int subreg_lsb (const_rtx
);
2061 extern unsigned int subreg_lsb_1 (machine_mode
, machine_mode
,
2063 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2064 unsigned int, machine_mode
);
2065 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2066 unsigned int, machine_mode
);
2067 extern unsigned int subreg_regno (const_rtx
);
2068 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2069 unsigned int, machine_mode
);
2070 extern unsigned int subreg_nregs (const_rtx
);
2071 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2072 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2073 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2074 extern bool constant_pool_constant_p (rtx
);
2075 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2076 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2077 extern void split_double (rtx
, rtx
*, rtx
*);
2078 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2079 extern void decompose_address (struct address_info
*, rtx
*,
2080 machine_mode
, addr_space_t
, enum rtx_code
);
2081 extern void decompose_lea_address (struct address_info
*, rtx
*);
2082 extern void decompose_mem_address (struct address_info
*, rtx
);
2083 extern void update_address (struct address_info
*);
2084 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2085 extern enum rtx_code
get_index_code (const struct address_info
*);
2087 #ifndef GENERATOR_FILE
2088 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2089 rather than size. */
2092 set_rtx_cost (rtx x
, bool speed_p
)
2094 return rtx_cost (x
, INSN
, 4, speed_p
);
2097 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2100 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2102 get_full_rtx_cost (x
, INSN
, 4, c
);
2105 /* Return the cost of moving X into a register, relative to the cost
2106 of a register move. SPEED_P is true if optimizing for speed rather
2110 set_src_cost (rtx x
, bool speed_p
)
2112 return rtx_cost (x
, SET
, 1, speed_p
);
2115 /* Like set_src_cost, but return both the speed and size costs in C. */
2118 get_full_set_src_cost (rtx x
, struct full_rtx_costs
*c
)
2120 get_full_rtx_cost (x
, SET
, 1, c
);
2124 /* 1 if RTX is a subreg containing a reg that is already known to be
2125 sign- or zero-extended from the mode of the subreg to the mode of
2126 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2129 When used as a LHS, is means that this extension must be done
2130 when assigning to SUBREG_REG. */
2132 #define SUBREG_PROMOTED_VAR_P(RTX) \
2133 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2135 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2136 this gives the necessary extensions:
2137 0 - signed (SPR_SIGNED)
2138 1 - normal unsigned (SPR_UNSIGNED)
2139 2 - value is both sign and unsign extended for mode
2140 (SPR_SIGNED_AND_UNSIGNED).
2141 -1 - pointer unsigned, which most often can be handled like unsigned
2142 extension, except for generating instructions where we need to
2143 emit special code (ptr_extend insns) on some architectures
2146 const int SRP_POINTER
= -1;
2147 const int SRP_SIGNED
= 0;
2148 const int SRP_UNSIGNED
= 1;
2149 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2151 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2152 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2154 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2159 _rtx->volatil = 0; \
2160 _rtx->unchanging = 0; \
2163 _rtx->volatil = 0; \
2164 _rtx->unchanging = 1; \
2166 case SRP_UNSIGNED: \
2167 _rtx->volatil = 1; \
2168 _rtx->unchanging = 0; \
2170 case SRP_SIGNED_AND_UNSIGNED: \
2171 _rtx->volatil = 1; \
2172 _rtx->unchanging = 1; \
2177 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2178 including SRP_SIGNED_AND_UNSIGNED if promoted for
2179 both signed and unsigned. */
2180 #define SUBREG_PROMOTED_GET(RTX) \
2181 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2182 + (RTX)->unchanging - 1)
2184 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2185 #define SUBREG_PROMOTED_SIGN(RTX) \
2186 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2187 : (RTX)->unchanging - 1)
2189 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2191 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2192 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2194 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2195 for UNSIGNED type. */
2196 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2197 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2199 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2200 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2201 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2202 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2203 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2205 /* True if the subreg was generated by LRA for reload insns. Such
2206 subregs are valid only during LRA. */
2207 #define LRA_SUBREG_P(RTX) \
2208 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2210 /* True if call is instrumented by Pointer Bounds Checker. */
2211 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \
2212 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump)
2214 /* Access various components of an ASM_OPERANDS rtx. */
2216 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2217 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2218 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2219 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2220 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2221 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2222 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2223 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2224 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2225 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2226 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2227 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2228 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2229 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2230 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2231 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2232 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2233 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2235 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2236 #define MEM_READONLY_P(RTX) \
2237 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2239 /* 1 if RTX is a mem and we should keep the alias set for this mem
2240 unchanged when we access a component. Set to 1, or example, when we
2241 are already in a non-addressable component of an aggregate. */
2242 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2243 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2245 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2246 #define MEM_VOLATILE_P(RTX) \
2247 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2248 ASM_INPUT)->volatil)
2250 /* 1 if RTX is a mem that cannot trap. */
2251 #define MEM_NOTRAP_P(RTX) \
2252 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2254 /* The memory attribute block. We provide access macros for each value
2255 in the block and provide defaults if none specified. */
2256 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2258 /* The register attribute block. We provide access macros for each value
2259 in the block and provide defaults if none specified. */
2260 #define REG_ATTRS(RTX) X0REGATTR (RTX, 1)
2262 #ifndef GENERATOR_FILE
2263 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2264 set, and may alias anything. Otherwise, the MEM can only alias
2265 MEMs in a conflicting alias set. This value is set in a
2266 language-dependent manner in the front-end, and should not be
2267 altered in the back-end. These set numbers are tested with
2268 alias_sets_conflict_p. */
2269 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2271 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2272 refer to part of a DECL. It may also be a COMPONENT_REF. */
2273 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2275 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2276 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2278 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2279 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2281 /* For a MEM rtx, the address space. */
2282 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2284 /* For a MEM rtx, true if its MEM_SIZE is known. */
2285 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2287 /* For a MEM rtx, the size in bytes of the MEM. */
2288 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2290 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2291 mode as a default when STRICT_ALIGNMENT, but not if not. */
2292 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2294 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2297 /* For a REG rtx, the decl it is known to refer to, if it is known to
2298 refer to part of a DECL. */
2299 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2301 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2303 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2305 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2306 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2307 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2308 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2309 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2310 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2311 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2312 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2314 /* 1 if RTX is a label_ref for a nonlocal label. */
2315 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2316 REG_LABEL_TARGET note. */
2317 #define LABEL_REF_NONLOCAL_P(RTX) \
2318 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2320 /* 1 if RTX is a code_label that should always be considered to be needed. */
2321 #define LABEL_PRESERVE_P(RTX) \
2322 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2324 /* During sched, 1 if RTX is an insn that must be scheduled together
2325 with the preceding insn. */
2326 #define SCHED_GROUP_P(RTX) \
2327 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2328 JUMP_INSN, CALL_INSN)->in_struct)
2330 /* For a SET rtx, SET_DEST is the place that is set
2331 and SET_SRC is the value it is set to. */
2332 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2333 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2334 #define SET_IS_RETURN_P(RTX) \
2335 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2337 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2338 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2339 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2341 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2342 conditionally executing the code on, COND_EXEC_CODE is the code
2343 to execute if the condition is true. */
2344 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2345 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2347 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2349 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2350 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2352 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2353 tree constant pool. This information is private to varasm.c. */
2354 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2355 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2356 (RTX), SYMBOL_REF)->frame_related)
2358 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2359 #define SYMBOL_REF_FLAG(RTX) \
2360 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2362 /* 1 if RTX is a symbol_ref that has been the library function in
2363 emit_library_call. */
2364 #define SYMBOL_REF_USED(RTX) \
2365 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2367 /* 1 if RTX is a symbol_ref for a weak symbol. */
2368 #define SYMBOL_REF_WEAK(RTX) \
2369 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2371 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2372 SYMBOL_REF_CONSTANT. */
2373 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2375 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2377 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2378 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2380 /* The tree (decl or constant) associated with the symbol, or null. */
2381 #define SYMBOL_REF_DECL(RTX) \
2382 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2384 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2385 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2386 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2388 /* The rtx constant pool entry for a symbol, or null. */
2389 #define SYMBOL_REF_CONSTANT(RTX) \
2390 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2392 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2393 information derivable from the tree decl associated with this symbol.
2394 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2395 decl. In some cases this is a bug. But beyond that, it's nice to cache
2396 this information to avoid recomputing it. Finally, this allows space for
2397 the target to store more than one bit of information, as with
2399 #define SYMBOL_REF_FLAGS(RTX) \
2400 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2401 ->u2.symbol_ref_flags)
2403 /* These flags are common enough to be defined for all targets. They
2404 are computed by the default version of targetm.encode_section_info. */
2406 /* Set if this symbol is a function. */
2407 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2408 #define SYMBOL_REF_FUNCTION_P(RTX) \
2409 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2410 /* Set if targetm.binds_local_p is true. */
2411 #define SYMBOL_FLAG_LOCAL (1 << 1)
2412 #define SYMBOL_REF_LOCAL_P(RTX) \
2413 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2414 /* Set if targetm.in_small_data_p is true. */
2415 #define SYMBOL_FLAG_SMALL (1 << 2)
2416 #define SYMBOL_REF_SMALL_P(RTX) \
2417 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2418 /* The three-bit field at [5:3] is true for TLS variables; use
2419 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2420 #define SYMBOL_FLAG_TLS_SHIFT 3
2421 #define SYMBOL_REF_TLS_MODEL(RTX) \
2422 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2423 /* Set if this symbol is not defined in this translation unit. */
2424 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2425 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2426 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2427 /* Set if this symbol has a block_symbol structure associated with it. */
2428 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2429 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2430 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2431 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2432 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2433 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2434 #define SYMBOL_REF_ANCHOR_P(RTX) \
2435 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2437 /* Subsequent bits are available for the target to use. */
2438 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2439 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2441 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2442 structure to which the symbol belongs, or NULL if it has not been
2443 assigned a block. */
2444 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2446 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2447 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2448 RTX has not yet been assigned to a block, or it has not been given an
2449 offset within that block. */
2450 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2452 /* True if RTX is flagged to be a scheduling barrier. */
2453 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2454 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2456 /* Indicate whether the machine has any sort of auto increment addressing.
2457 If not, we can avoid checking for REG_INC notes. */
2459 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2460 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2461 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2462 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2463 #define AUTO_INC_DEC
2466 /* Define a macro to look for REG_INC notes,
2467 but save time on machines where they never exist. */
2470 #define FIND_REG_INC_NOTE(INSN, REG) \
2471 ((REG) != NULL_RTX && REG_P ((REG)) \
2472 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2473 : find_reg_note ((INSN), REG_INC, (REG)))
2475 #define FIND_REG_INC_NOTE(INSN, REG) 0
2478 #ifndef HAVE_PRE_INCREMENT
2479 #define HAVE_PRE_INCREMENT 0
2482 #ifndef HAVE_PRE_DECREMENT
2483 #define HAVE_PRE_DECREMENT 0
2486 #ifndef HAVE_POST_INCREMENT
2487 #define HAVE_POST_INCREMENT 0
2490 #ifndef HAVE_POST_DECREMENT
2491 #define HAVE_POST_DECREMENT 0
2494 #ifndef HAVE_POST_MODIFY_DISP
2495 #define HAVE_POST_MODIFY_DISP 0
2498 #ifndef HAVE_POST_MODIFY_REG
2499 #define HAVE_POST_MODIFY_REG 0
2502 #ifndef HAVE_PRE_MODIFY_DISP
2503 #define HAVE_PRE_MODIFY_DISP 0
2506 #ifndef HAVE_PRE_MODIFY_REG
2507 #define HAVE_PRE_MODIFY_REG 0
2511 /* Some architectures do not have complete pre/post increment/decrement
2512 instruction sets, or only move some modes efficiently. These macros
2513 allow us to tune autoincrement generation. */
2515 #ifndef USE_LOAD_POST_INCREMENT
2516 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2519 #ifndef USE_LOAD_POST_DECREMENT
2520 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2523 #ifndef USE_LOAD_PRE_INCREMENT
2524 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2527 #ifndef USE_LOAD_PRE_DECREMENT
2528 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2531 #ifndef USE_STORE_POST_INCREMENT
2532 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2535 #ifndef USE_STORE_POST_DECREMENT
2536 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2539 #ifndef USE_STORE_PRE_INCREMENT
2540 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2543 #ifndef USE_STORE_PRE_DECREMENT
2544 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2547 /* Nonzero when we are generating CONCATs. */
2548 extern int generating_concat_p
;
2550 /* Nonzero when we are expanding trees to RTL. */
2551 extern int currently_expanding_to_rtl
;
2553 /* Generally useful functions. */
2556 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2557 extern rtx
plus_constant (machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2560 extern rtx
rtx_alloc_stat (RTX_CODE MEM_STAT_DECL
);
2561 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2562 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2563 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2564 #define const_wide_int_alloc(NWORDS) \
2565 rtx_alloc_v (CONST_WIDE_INT, \
2566 (sizeof (struct hwivec_def) \
2567 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2569 extern rtvec rtvec_alloc (int);
2570 extern rtvec
shallow_copy_rtvec (rtvec
);
2571 extern bool shared_const_p (const_rtx
);
2572 extern rtx
copy_rtx (rtx
);
2573 extern void dump_rtx_statistics (void);
2576 extern rtx
copy_rtx_if_shared (rtx
);
2579 extern unsigned int rtx_size (const_rtx
);
2580 extern rtx
shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL
);
2581 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2582 extern int rtx_equal_p (const_rtx
, const_rtx
);
2585 extern rtvec
gen_rtvec_v (int, rtx
*);
2586 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
2587 extern rtx
gen_reg_rtx (machine_mode
);
2588 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, int);
2589 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
2590 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2591 extern rtx_code_label
*gen_label_rtx (void);
2592 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
2595 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
2598 extern rtx
gen_highpart (machine_mode
, rtx
);
2599 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
2600 extern rtx
operand_subword (rtx
, unsigned int, int, machine_mode
);
2603 extern rtx
operand_subword_force (rtx
, unsigned int, machine_mode
);
2604 extern bool paradoxical_subreg_p (const_rtx
);
2605 extern int subreg_lowpart_p (const_rtx
);
2606 extern unsigned int subreg_lowpart_offset (machine_mode
,
2608 extern unsigned int subreg_highpart_offset (machine_mode
,
2610 extern int byte_lowpart_offset (machine_mode
, machine_mode
);
2611 extern rtx
make_safe_from (rtx
, rtx
);
2612 extern rtx
convert_memory_address_addr_space (machine_mode
, rtx
,
2614 #define convert_memory_address(to_mode,x) \
2615 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2616 extern const char *get_insn_name (int);
2617 extern rtx_insn
*get_last_insn_anywhere (void);
2618 extern rtx_insn
*get_first_nonnote_insn (void);
2619 extern rtx_insn
*get_last_nonnote_insn (void);
2620 extern void start_sequence (void);
2621 extern void push_to_sequence (rtx_insn
*);
2622 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
2623 extern void end_sequence (void);
2624 #if TARGET_SUPPORTS_WIDE_INT == 0
2625 extern double_int
rtx_to_double_int (const_rtx
);
2627 extern void cwi_output_hex (FILE *, const_rtx
);
2628 #ifndef GENERATOR_FILE
2629 extern rtx
immed_wide_int_const (const wide_int_ref
&, machine_mode
);
2631 #if TARGET_SUPPORTS_WIDE_INT == 0
2632 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
2638 extern rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
2641 extern rtx
force_const_mem (machine_mode
, rtx
);
2646 extern rtx
get_pool_constant (const_rtx
);
2647 extern rtx
get_pool_constant_mark (rtx
, bool *);
2648 extern machine_mode
get_pool_mode (const_rtx
);
2649 extern rtx
simplify_subtraction (rtx
);
2650 extern void decide_function_section (tree
);
2653 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
2654 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
2655 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, int);
2656 extern rtx_insn
*emit_jump_insn_before (rtx
, rtx
);
2657 extern rtx_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
2658 extern rtx_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*, int);
2659 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
2660 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
2661 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, int);
2662 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx
);
2663 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
2664 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
2665 extern rtx_barrier
*emit_barrier_before (rtx
);
2666 extern rtx_insn
*emit_label_before (rtx
, rtx_insn
*);
2667 extern rtx_note
*emit_note_before (enum insn_note
, rtx
);
2668 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
2669 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
2670 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
2671 extern rtx_insn
*emit_jump_insn_after (rtx
, rtx
);
2672 extern rtx_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
2673 extern rtx_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
2674 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
2675 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
2676 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
2677 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
2678 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
2679 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
2680 extern rtx_barrier
*emit_barrier_after (rtx
);
2681 extern rtx_insn
*emit_label_after (rtx
, rtx_insn
*);
2682 extern rtx_note
*emit_note_after (enum insn_note
, rtx
);
2683 extern rtx_insn
*emit_insn (rtx
);
2684 extern rtx_insn
*emit_debug_insn (rtx
);
2685 extern rtx_insn
*emit_jump_insn (rtx
);
2686 extern rtx_insn
*emit_call_insn (rtx
);
2687 extern rtx_insn
*emit_label (rtx
);
2688 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
2689 extern rtx_barrier
*emit_barrier (void);
2690 extern rtx_note
*emit_note (enum insn_note
);
2691 extern rtx_note
*emit_note_copy (rtx_note
*);
2692 extern rtx_insn
*gen_clobber (rtx
);
2693 extern rtx_insn
*emit_clobber (rtx
);
2694 extern rtx_insn
*gen_use (rtx
);
2695 extern rtx_insn
*emit_use (rtx
);
2696 extern rtx_insn
*make_insn_raw (rtx
);
2697 extern void add_function_usage_to (rtx
, rtx
);
2698 extern rtx_call_insn
*last_call_insn (void);
2699 extern rtx_insn
*previous_insn (rtx_insn
*);
2700 extern rtx_insn
*next_insn (rtx_insn
*);
2701 extern rtx_insn
*prev_nonnote_insn (rtx
);
2702 extern rtx_insn
*prev_nonnote_insn_bb (rtx
);
2703 extern rtx_insn
*next_nonnote_insn (rtx
);
2704 extern rtx_insn
*next_nonnote_insn_bb (rtx_insn
*);
2705 extern rtx_insn
*prev_nondebug_insn (rtx
);
2706 extern rtx_insn
*next_nondebug_insn (rtx
);
2707 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx
);
2708 extern rtx_insn
*next_nonnote_nondebug_insn (rtx
);
2709 extern rtx_insn
*prev_real_insn (rtx
);
2710 extern rtx_insn
*next_real_insn (rtx
);
2711 extern rtx_insn
*prev_active_insn (rtx
);
2712 extern rtx_insn
*next_active_insn (rtx
);
2713 extern int active_insn_p (const_rtx
);
2714 extern rtx_insn
*next_cc0_user (rtx
);
2715 extern rtx_insn
*prev_cc0_setter (rtx
);
2718 extern int insn_line (const rtx_insn
*);
2719 extern const char * insn_file (const rtx_insn
*);
2720 extern tree
insn_scope (const rtx_insn
*);
2721 extern expanded_location
insn_location (const rtx_insn
*);
2722 extern location_t prologue_location
, epilogue_location
;
2725 extern enum rtx_code
reverse_condition (enum rtx_code
);
2726 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
2727 extern enum rtx_code
swap_condition (enum rtx_code
);
2728 extern enum rtx_code
unsigned_condition (enum rtx_code
);
2729 extern enum rtx_code
signed_condition (enum rtx_code
);
2730 extern void mark_jump_label (rtx
, rtx_insn
*, int);
2733 extern rtx_insn
*delete_related_insns (rtx
);
2736 extern rtx
*find_constant_term_loc (rtx
*);
2739 extern rtx_insn
*try_split (rtx
, rtx
, int);
2740 extern int split_branch_probability
;
2742 /* In unknown file */
2743 extern rtx
split_insns (rtx
, rtx
);
2745 /* In simplify-rtx.c */
2746 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
2748 extern rtx
simplify_unary_operation (enum rtx_code
, machine_mode
, rtx
,
2750 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
2752 extern rtx
simplify_binary_operation (enum rtx_code
, machine_mode
, rtx
,
2754 extern rtx
simplify_ternary_operation (enum rtx_code
, machine_mode
,
2755 machine_mode
, rtx
, rtx
, rtx
);
2756 extern rtx
simplify_const_relational_operation (enum rtx_code
,
2757 machine_mode
, rtx
, rtx
);
2758 extern rtx
simplify_relational_operation (enum rtx_code
, machine_mode
,
2759 machine_mode
, rtx
, rtx
);
2760 extern rtx
simplify_gen_binary (enum rtx_code
, machine_mode
, rtx
, rtx
);
2761 extern rtx
simplify_gen_unary (enum rtx_code
, machine_mode
, rtx
,
2763 extern rtx
simplify_gen_ternary (enum rtx_code
, machine_mode
,
2764 machine_mode
, rtx
, rtx
, rtx
);
2765 extern rtx
simplify_gen_relational (enum rtx_code
, machine_mode
,
2766 machine_mode
, rtx
, rtx
);
2767 extern rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
,
2769 extern rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
,
2771 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
2772 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
2773 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
2774 extern rtx
simplify_rtx (const_rtx
);
2775 extern rtx
avoid_constant_pool_reference (rtx
);
2776 extern rtx
delegitimize_mem_from_attrs (rtx
);
2777 extern bool mode_signbit_p (machine_mode
, const_rtx
);
2778 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
2779 extern bool val_signbit_known_set_p (machine_mode
,
2780 unsigned HOST_WIDE_INT
);
2781 extern bool val_signbit_known_clear_p (machine_mode
,
2782 unsigned HOST_WIDE_INT
);
2785 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
2788 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
2792 extern rtx
set_for_reg_notes (rtx
);
2793 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
2794 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
2795 extern void set_insn_deleted (rtx
);
2797 /* Functions in rtlanal.c */
2799 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
2801 /* Handle the cheap and common cases inline for performance. */
2803 inline rtx
single_set (const rtx_insn
*insn
)
2808 if (GET_CODE (PATTERN (insn
)) == SET
)
2809 return PATTERN (insn
);
2811 /* Defer to the more expensive case. */
2812 return single_set_2 (insn
, PATTERN (insn
));
2815 extern machine_mode
get_address_mode (rtx mem
);
2816 extern int rtx_addr_can_trap_p (const_rtx
);
2817 extern bool nonzero_address_p (const_rtx
);
2818 extern int rtx_unstable_p (const_rtx
);
2819 extern bool rtx_varies_p (const_rtx
, bool);
2820 extern bool rtx_addr_varies_p (const_rtx
, bool);
2821 extern rtx
get_call_rtx_from (rtx
);
2822 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
2823 extern rtx
get_related_value (const_rtx
);
2824 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
2825 extern void split_const (rtx
, rtx
*, rtx
*);
2826 extern bool unsigned_reg_p (rtx
);
2827 extern int reg_mentioned_p (const_rtx
, const_rtx
);
2828 extern int count_occurrences (const_rtx
, const_rtx
, int);
2829 extern int reg_referenced_p (const_rtx
, const_rtx
);
2830 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2831 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2832 extern int commutative_operand_precedence (rtx
);
2833 extern bool swap_commutative_operands_p (rtx
, rtx
);
2834 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
2835 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
2836 extern int modified_in_p (const_rtx
, const_rtx
);
2837 extern int reg_set_p (const_rtx
, const_rtx
);
2838 extern int multiple_sets (const_rtx
);
2839 extern int set_noop_p (const_rtx
);
2840 extern int noop_move_p (const_rtx
);
2841 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
2842 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
2843 extern const_rtx
set_of (const_rtx
, const_rtx
);
2844 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
2845 extern void record_hard_reg_uses (rtx
*, void *);
2847 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
2848 extern void find_all_hard_reg_sets (const_rtx
, HARD_REG_SET
*, bool);
2850 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
2851 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
2852 extern int dead_or_set_p (const_rtx
, const_rtx
);
2853 extern int dead_or_set_regno_p (const_rtx
, unsigned int);
2854 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
2855 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
2856 extern rtx
find_reg_equal_equiv_note (const_rtx
);
2857 extern rtx
find_constant_src (const rtx_insn
*);
2858 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
2859 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
2860 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
2861 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
2862 extern void add_int_reg_note (rtx
, enum reg_note
, int);
2863 extern void add_shallow_copy_of_reg_note (rtx
, rtx
);
2864 extern void remove_note (rtx
, const_rtx
);
2865 extern void remove_reg_equal_equiv_notes (rtx
);
2866 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
2867 extern int side_effects_p (const_rtx
);
2868 extern int volatile_refs_p (const_rtx
);
2869 extern int volatile_insn_p (const_rtx
);
2870 extern int may_trap_p_1 (const_rtx
, unsigned);
2871 extern int may_trap_p (const_rtx
);
2872 extern int may_trap_or_fault_p (const_rtx
);
2873 extern bool can_throw_internal (const_rtx
);
2874 extern bool can_throw_external (const_rtx
);
2875 extern bool insn_could_throw_p (const_rtx
);
2876 extern bool insn_nothrow_p (const_rtx
);
2877 extern bool can_nonlocal_goto (const_rtx
);
2878 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
2879 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
2880 extern int inequality_comparisons_p (const_rtx
);
2881 extern rtx
replace_rtx (rtx
, rtx
, rtx
);
2882 extern void replace_label (rtx
*, rtx
, rtx
, bool);
2883 extern void replace_label_in_insn (rtx_insn
*, rtx
, rtx
, bool);
2884 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
2885 extern bool tablejump_p (const rtx_insn
*, rtx
*, rtx_jump_table_data
**);
2886 extern int computed_jump_p (const_rtx
);
2887 extern bool tls_referenced_p (const_rtx
);
2889 typedef int (*rtx_function
) (rtx
*, void *);
2890 extern int for_each_rtx (rtx
*, rtx_function
, void *);
2891 extern int for_each_rtx_in_insn (rtx_insn
**, rtx_function
, void *);
2893 /* Callback for for_each_inc_dec, to process the autoinc operation OP
2894 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
2895 NULL. The callback is passed the same opaque ARG passed to
2896 for_each_inc_dec. Return zero to continue looking for other
2897 autoinc operations or any other value to interrupt the traversal and
2898 return that value to the caller of for_each_inc_dec. */
2899 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
2900 rtx srcoff
, void *arg
);
2901 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
2903 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
2905 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
2906 rtx_equal_p_callback_function
);
2908 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
2910 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
2911 bool, hash_rtx_callback_function
);
2913 extern rtx
regno_use_in (unsigned int, rtx
);
2914 extern int auto_inc_p (const_rtx
);
2915 extern int in_expr_list_p (const_rtx
, const_rtx
);
2916 extern void remove_node_from_expr_list (const_rtx
, rtx_expr_list
**);
2917 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
2918 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
2919 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
2920 extern bool keep_with_call_p (const rtx_insn
*);
2921 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
2922 extern int insn_rtx_cost (rtx
, bool);
2923 extern unsigned seq_cost (const rtx_insn
*, bool);
2925 /* Given an insn and condition, return a canonical description of
2926 the test being made. */
2927 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
2930 /* Given a JUMP_INSN, return a canonical description of the test
2932 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
2934 /* Information about a subreg of a hard register. */
2937 /* Offset of first hard register involved in the subreg. */
2939 /* Number of hard registers involved in the subreg. In the case of
2940 a paradoxical subreg, this is the number of registers that would
2941 be modified by writing to the subreg; some of them may be don't-care
2942 when reading from the subreg. */
2944 /* Whether this subreg can be represented as a hard reg with the new
2945 mode (by adding OFFSET to the original hard register). */
2946 bool representable_p
;
2949 extern void subreg_get_info (unsigned int, machine_mode
,
2950 unsigned int, machine_mode
,
2951 struct subreg_info
*);
2955 extern void free_EXPR_LIST_list (rtx_expr_list
**);
2956 extern void free_INSN_LIST_list (rtx_insn_list
**);
2957 extern void free_EXPR_LIST_node (rtx
);
2958 extern void free_INSN_LIST_node (rtx
);
2959 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
2960 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
2961 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
2962 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
2963 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
2964 extern rtx
remove_list_elem (rtx
, rtx
*);
2965 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
2966 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
2971 /* Resize reg info. */
2972 extern bool resize_reg_info (void);
2973 /* Free up register info memory. */
2974 extern void free_reg_info (void);
2975 extern void init_subregs_of_mode (void);
2976 extern void finish_subregs_of_mode (void);
2979 extern rtx
extract_asm_operands (rtx
);
2980 extern int asm_noperands (const_rtx
);
2981 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
2982 machine_mode
*, location_t
*);
2983 extern void get_referenced_operands (const char *, bool *, unsigned int);
2985 extern enum reg_class
reg_preferred_class (int);
2986 extern enum reg_class
reg_alternate_class (int);
2987 extern enum reg_class
reg_allocno_class (int);
2988 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
2991 extern void split_all_insns (void);
2992 extern unsigned int split_all_insns_noflow (void);
2994 #define MAX_SAVED_CONST_INT 64
2995 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
2997 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
2998 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
2999 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3000 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3001 extern GTY(()) rtx const_true_rtx
;
3003 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3005 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3006 same as VOIDmode. */
3008 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3010 /* Likewise, for the constants 1 and 2 and -1. */
3012 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3013 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3014 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3016 extern GTY(()) rtx pc_rtx
;
3017 extern GTY(()) rtx cc0_rtx
;
3018 extern GTY(()) rtx ret_rtx
;
3019 extern GTY(()) rtx simple_return_rtx
;
3021 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3022 is used to represent the frame pointer. This is because the
3023 hard frame pointer and the automatic variables are separated by an amount
3024 that cannot be determined until after register allocation. We can assume
3025 that in this case ELIMINABLE_REGS will be defined, one action of which
3026 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3027 #ifndef HARD_FRAME_POINTER_REGNUM
3028 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3031 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3032 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3033 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3036 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3037 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3038 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3041 /* Index labels for global_rtl. */
3042 enum global_rtl_index
3046 /* For register elimination to work properly these hard_frame_pointer_rtx,
3047 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3048 the same register. */
3049 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3050 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3052 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3053 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3055 GR_HARD_FRAME_POINTER
,
3057 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3058 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3059 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3064 GR_VIRTUAL_INCOMING_ARGS
,
3065 GR_VIRTUAL_STACK_ARGS
,
3066 GR_VIRTUAL_STACK_DYNAMIC
,
3067 GR_VIRTUAL_OUTGOING_ARGS
,
3069 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3074 /* Target-dependent globals. */
3075 struct GTY(()) target_rtl
{
3076 /* All references to the hard registers in global_rtl_index go through
3077 these unique rtl objects. On machines where the frame-pointer and
3078 arg-pointer are the same register, they use the same unique object.
3080 After register allocation, other rtl objects which used to be pseudo-regs
3081 may be clobbered to refer to the frame-pointer register.
3082 But references that were originally to the frame-pointer can be
3083 distinguished from the others because they contain frame_pointer_rtx.
3085 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3086 tricky: until register elimination has taken place hard_frame_pointer_rtx
3087 should be used if it is being set, and frame_pointer_rtx otherwise. After
3088 register elimination hard_frame_pointer_rtx should always be used.
3089 On machines where the two registers are same (most) then these are the
3091 rtx x_global_rtl
[GR_MAX
];
3093 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3094 rtx x_pic_offset_table_rtx
;
3096 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3097 This is used to implement __builtin_return_address for some machines;
3098 see for instance the MIPS port. */
3099 rtx x_return_address_pointer_rtx
;
3101 /* Commonly used RTL for hard registers. These objects are not
3102 necessarily unique, so we allocate them separately from global_rtl.
3103 They are initialized once per compilation unit, then copied into
3104 regno_reg_rtx at the beginning of each function. */
3105 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3107 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3108 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3110 /* Static hunks of RTL used by the aliasing code; these are treated
3111 as persistent to avoid unnecessary RTL allocations. */
3112 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3114 /* The default memory attributes for each mode. */
3115 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3117 /* Track if RTL has been initialized. */
3118 bool target_specific_initialized
;
3121 extern GTY(()) struct target_rtl default_target_rtl
;
3122 #if SWITCHABLE_TARGET
3123 extern struct target_rtl
*this_target_rtl
;
3125 #define this_target_rtl (&default_target_rtl)
3128 #define global_rtl \
3129 (this_target_rtl->x_global_rtl)
3130 #define pic_offset_table_rtx \
3131 (this_target_rtl->x_pic_offset_table_rtx)
3132 #define return_address_pointer_rtx \
3133 (this_target_rtl->x_return_address_pointer_rtx)
3134 #define top_of_stack \
3135 (this_target_rtl->x_top_of_stack)
3136 #define mode_mem_attrs \
3137 (this_target_rtl->x_mode_mem_attrs)
3139 /* All references to certain hard regs, except those created
3140 by allocating pseudo regs into them (when that's possible),
3141 go through these unique rtx objects. */
3142 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3143 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3144 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3145 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3147 #ifndef GENERATOR_FILE
3148 /* Return the attributes of a MEM rtx. */
3149 static inline struct mem_attrs
*
3150 get_mem_attrs (const_rtx x
)
3152 struct mem_attrs
*attrs
;
3154 attrs
= MEM_ATTRS (x
);
3156 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3161 /* Include the RTL generation functions. */
3163 #ifndef GENERATOR_FILE
3165 #undef gen_rtx_ASM_INPUT
3166 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3167 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3168 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3169 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3172 /* There are some RTL codes that require special attention; the
3173 generation functions included above do the raw handling. If you
3174 add to this list, modify special_rtx in gengenrtl.c as well. */
3176 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3177 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3179 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3180 basic_block bb
, rtx pattern
, int location
, int code
,
3182 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3183 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3184 extern rtx
gen_raw_REG (machine_mode
, int);
3185 extern rtx
gen_rtx_REG (machine_mode
, unsigned);
3186 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, int);
3187 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
3188 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
3189 enum var_init_status
);
3191 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3193 /* Virtual registers are used during RTL generation to refer to locations into
3194 the stack frame when the actual location isn't known until RTL generation
3195 is complete. The routine instantiate_virtual_regs replaces these with
3196 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3199 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3201 /* This points to the first word of the incoming arguments passed on the stack,
3202 either by the caller or by the callee when pretending it was passed by the
3205 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3207 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3209 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3210 variable on the stack. Otherwise, it points to the first variable on
3213 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3215 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3217 /* This points to the location of dynamically-allocated memory on the stack
3218 immediately after the stack pointer has been adjusted by the amount
3221 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3223 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3225 /* This points to the location in the stack at which outgoing arguments should
3226 be written when the stack is pre-pushed (arguments pushed using push
3227 insns always use sp). */
3229 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3231 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3233 /* This points to the Canonical Frame Address of the function. This
3234 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3235 but is calculated relative to the arg pointer for simplicity; the
3236 frame pointer nor stack pointer are necessarily fixed relative to
3237 the CFA until after reload. */
3239 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3241 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3243 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3245 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3248 #define virtual_preferred_stack_boundary_rtx \
3249 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3251 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3252 ((FIRST_VIRTUAL_REGISTER) + 5)
3254 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3256 /* Nonzero if REGNUM is a pointer into the stack frame. */
3257 #define REGNO_PTR_FRAME_P(REGNUM) \
3258 ((REGNUM) == STACK_POINTER_REGNUM \
3259 || (REGNUM) == FRAME_POINTER_REGNUM \
3260 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3261 || (REGNUM) == ARG_POINTER_REGNUM \
3262 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3263 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3265 /* REGNUM never really appearing in the INSN stream. */
3266 #define INVALID_REGNUM (~(unsigned int) 0)
3268 /* REGNUM for which no debug information can be generated. */
3269 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3271 extern rtx
output_constant_def (tree
, int);
3272 extern rtx
lookup_constant_def (tree
);
3274 /* Nonzero after end of reload pass.
3275 Set to 1 or 0 by reload1.c. */
3277 extern int reload_completed
;
3279 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3280 extern int epilogue_completed
;
3282 /* Set to 1 while reload_as_needed is operating.
3283 Required by some machines to handle any generated moves differently. */
3285 extern int reload_in_progress
;
3287 /* Set to 1 while in lra. */
3288 extern int lra_in_progress
;
3290 /* This macro indicates whether you may create a new
3293 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3296 /* Nonzero after end of regstack pass.
3297 Set to 1 or 0 by reg-stack.c. */
3298 extern int regstack_completed
;
3301 /* If this is nonzero, we do not bother generating VOLATILE
3302 around volatile memory references, and we are willing to
3303 output indirect addresses. If cse is to follow, we reject
3304 indirect addresses so a useful potential cse is generated;
3305 if it is used only once, instruction combination will produce
3306 the same indirect address eventually. */
3307 extern int cse_not_expected
;
3309 /* Translates rtx code to tree code, for those codes needed by
3310 REAL_ARITHMETIC. The function returns an int because the caller may not
3311 know what `enum tree_code' means. */
3313 extern int rtx_to_tree_code (enum rtx_code
);
3316 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3317 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3318 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
3321 extern bool check_for_inc_dec (rtx_insn
*insn
);
3324 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3325 extern bool jump_to_label_p (const rtx_insn
*);
3326 extern int condjump_p (const rtx_insn
*);
3327 extern int any_condjump_p (const rtx_insn
*);
3328 extern int any_uncondjump_p (const rtx_insn
*);
3329 extern rtx
pc_set (const rtx_insn
*);
3330 extern rtx
condjump_label (const rtx_insn
*);
3331 extern int simplejump_p (const rtx_insn
*);
3332 extern int returnjump_p (const rtx_insn
*);
3333 extern int eh_returnjump_p (rtx_insn
*);
3334 extern int onlyjump_p (const rtx_insn
*);
3335 extern int only_sets_cc0_p (const_rtx
);
3336 extern int sets_cc0_p (const_rtx
);
3337 extern int invert_jump_1 (rtx_insn
*, rtx
);
3338 extern int invert_jump (rtx_insn
*, rtx
, int);
3339 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3340 extern int true_regnum (const_rtx
);
3341 extern unsigned int reg_or_subregno (const_rtx
);
3342 extern int redirect_jump_1 (rtx
, rtx
);
3343 extern void redirect_jump_2 (rtx
, rtx
, rtx
, int, int);
3344 extern int redirect_jump (rtx
, rtx
, int);
3345 extern void rebuild_jump_labels (rtx_insn
*);
3346 extern void rebuild_jump_labels_chain (rtx_insn
*);
3347 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
3348 extern enum rtx_code
reversed_comparison_code (const_rtx
, const_rtx
);
3349 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3350 const_rtx
, const_rtx
);
3351 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3352 extern int condjump_in_parallel_p (const rtx_insn
*);
3354 /* In emit-rtl.c. */
3355 extern int max_reg_num (void);
3356 extern int max_label_num (void);
3357 extern int get_first_label_num (void);
3358 extern void maybe_set_first_label_num (rtx
);
3359 extern void delete_insns_since (rtx_insn
*);
3360 extern void mark_reg_pointer (rtx
, int);
3361 extern void mark_user_reg (rtx
);
3362 extern void reset_used_flags (rtx
);
3363 extern void set_used_flags (rtx
);
3364 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3365 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3366 extern int get_max_insn_count (void);
3367 extern int in_sequence_p (void);
3368 extern void init_emit (void);
3369 extern void init_emit_regs (void);
3370 extern void init_derived_machine_modes (void);
3371 extern void init_emit_once (void);
3372 extern void push_topmost_sequence (void);
3373 extern void pop_topmost_sequence (void);
3374 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3375 extern unsigned int unshare_all_rtl (void);
3376 extern void unshare_all_rtl_again (rtx_insn
*);
3377 extern void unshare_all_rtl_in_chain (rtx_insn
*);
3378 extern void verify_rtl_sharing (void);
3379 extern void add_insn (rtx_insn
*);
3380 extern void add_insn_before (rtx
, rtx
, basic_block
);
3381 extern void add_insn_after (rtx
, rtx
, basic_block
);
3382 extern void remove_insn (rtx
);
3383 extern rtx_insn
*emit (rtx
);
3384 extern void emit_insn_at_entry (rtx
);
3385 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
3386 extern rtx
gen_const_mem (machine_mode
, rtx
);
3387 extern rtx
gen_frame_mem (machine_mode
, rtx
);
3388 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
3389 extern bool validate_subreg (machine_mode
, machine_mode
,
3390 const_rtx
, unsigned int);
3393 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
3394 extern rtx
remove_death (unsigned int, rtx_insn
*);
3395 extern void dump_combine_stats (FILE *);
3396 extern void dump_combine_total_stats (FILE *);
3397 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3399 /* In sched-rgn.c. */
3400 extern void schedule_insns (void);
3402 /* In sched-ebb.c. */
3403 extern void schedule_ebbs (void);
3405 /* In sel-sched-dump.c. */
3406 extern void sel_sched_fix_param (const char *param
, const char *val
);
3408 /* In print-rtl.c */
3409 extern const char *print_rtx_head
;
3410 extern void debug (const rtx_def
&ref
);
3411 extern void debug (const rtx_def
*ptr
);
3412 extern void debug_rtx (const_rtx
);
3413 extern void debug_rtx_list (const rtx_insn
*, int);
3414 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3415 extern const_rtx
debug_rtx_find (const rtx_insn
*, int);
3416 extern void print_mem_expr (FILE *, const_tree
);
3417 extern void print_rtl (FILE *, const_rtx
);
3418 extern void print_simple_rtl (FILE *, const_rtx
);
3419 extern int print_rtl_single (FILE *, const_rtx
);
3420 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3421 extern void print_inline_rtx (FILE *, const_rtx
, int);
3423 /* Functions in sched-vis.c. FIXME: Ideally these functions would
3424 not be in sched-vis.c but in rtl.c, because they are not only used
3425 by the scheduler anymore but for all "slim" RTL dumping. */
3426 extern void dump_value_slim (FILE *, const_rtx
, int);
3427 extern void dump_insn_slim (FILE *, const_rtx
);
3428 extern void dump_rtl_slim (FILE *, const rtx_insn
*, const rtx_insn
*,
3430 extern void print_value (pretty_printer
*, const_rtx
, int);
3431 extern void print_pattern (pretty_printer
*, const_rtx
, int);
3432 extern void print_insn (pretty_printer
*, const_rtx
, int);
3433 extern void rtl_dump_bb_for_graph (pretty_printer
*, basic_block
);
3434 extern const char *str_pattern_slim (const_rtx
);
3437 extern void expand_null_return (void);
3438 extern void expand_naked_return (void);
3439 extern void emit_jump (rtx
);
3442 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3444 extern HOST_WIDE_INT
find_args_size_adjust (rtx_insn
*);
3445 extern int fixup_args_size_notes (rtx_insn
*, rtx_insn
*, int);
3448 extern void init_expmed (void);
3449 extern void expand_inc (rtx
, rtx
);
3450 extern void expand_dec (rtx
, rtx
);
3452 /* In lower-subreg.c */
3453 extern void init_lower_subreg (void);
3456 extern bool can_copy_p (machine_mode
);
3457 extern bool can_assign_to_reg_without_clobbers_p (rtx
);
3458 extern rtx
fis_get_condition (rtx_insn
*);
3462 extern HARD_REG_SET eliminable_regset
;
3464 extern void mark_elimination (int, int);
3467 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3468 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3469 extern void globalize_reg (tree
, int);
3470 extern void init_reg_modes_target (void);
3471 extern void init_regs (void);
3472 extern void reinit_regs (void);
3473 extern void init_fake_stack_mems (void);
3474 extern void save_register_info (void);
3475 extern void init_reg_sets (void);
3476 extern void regclass (rtx
, int);
3477 extern void reg_scan (rtx_insn
*, unsigned int);
3478 extern void fix_register (const char *, int, int);
3480 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
3484 extern int function_invariant_p (const_rtx
);
3494 LCT_RETURNS_TWICE
= 5
3497 extern void emit_library_call (rtx
, enum libcall_type
, machine_mode
, int,
3499 extern rtx
emit_library_call_value (rtx
, rtx
, enum libcall_type
,
3500 machine_mode
, int, ...);
3503 extern void init_varasm_once (void);
3505 extern rtx
make_debug_expr_from_rtl (const_rtx
);
3508 extern bool read_rtx (const char *, rtx
*);
3511 extern rtx
canon_rtx (rtx
);
3512 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
3513 extern rtx
get_addr (rtx
);
3514 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
3516 extern int read_dependence (const_rtx
, const_rtx
);
3517 extern int anti_dependence (const_rtx
, const_rtx
);
3518 extern int canon_anti_dependence (const_rtx
, bool,
3519 const_rtx
, machine_mode
, rtx
);
3520 extern int output_dependence (const_rtx
, const_rtx
);
3521 extern int may_alias_p (const_rtx
, const_rtx
);
3522 extern void init_alias_target (void);
3523 extern void init_alias_analysis (void);
3524 extern void end_alias_analysis (void);
3525 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
3526 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
3527 extern bool memory_must_be_modified_in_insn_p (const_rtx
, const_rtx
);
3528 extern bool may_be_sp_based_p (rtx
);
3529 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
3530 extern rtx
get_reg_known_value (unsigned int);
3531 extern bool get_reg_known_equiv_p (unsigned int);
3532 extern rtx
get_reg_base_value (unsigned int);
3535 extern int stack_regs_mentioned (const_rtx insn
);
3539 extern GTY(()) rtx stack_limit_rtx
;
3541 /* In var-tracking.c */
3542 extern unsigned int variable_tracking_main (void);
3544 /* In stor-layout.c. */
3545 extern void get_mode_bounds (machine_mode
, int, machine_mode
,
3549 extern rtx
canon_condition (rtx
);
3550 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
3553 extern unsigned int compute_alignments (void);
3554 extern void update_alignments (vec
<rtx
> &);
3555 extern int asm_str_count (const char *templ
);
3559 rtx (*gen_lowpart
) (machine_mode
, rtx
);
3560 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
3561 rtx (*reg_nonzero_bits
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3562 unsigned HOST_WIDE_INT
, unsigned HOST_WIDE_INT
*);
3563 rtx (*reg_num_sign_bit_copies
) (const_rtx
, machine_mode
, const_rtx
, machine_mode
,
3564 unsigned int, unsigned int *);
3565 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
3567 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3570 /* Each pass can provide its own. */
3571 extern struct rtl_hooks rtl_hooks
;
3573 /* ... but then it has to restore these. */
3574 extern const struct rtl_hooks general_rtl_hooks
;
3576 /* Keep this for the nonce. */
3577 #define gen_lowpart rtl_hooks.gen_lowpart
3579 extern void insn_locations_init (void);
3580 extern void insn_locations_finalize (void);
3581 extern void set_curr_insn_location (location_t
);
3582 extern location_t
curr_insn_location (void);
3585 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
3587 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
3590 #define fatal_insn(msgid, insn) \
3591 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3592 #define fatal_insn_not_found(insn) \
3593 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3596 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
3599 #endif /* ! GCC_RTL_H */