1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2020 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
23 /* This file is occasionally included by generator files which expect
24 machmode.h and other files to exist and would not normally have been
25 included by coretypes.h. */
28 #include "fixed-value.h"
29 #include "statistics.h"
31 #include "hash-table.h"
35 #endif /* GENERATOR_FILE */
37 #include "hard-reg-set.h"
39 class predefined_function_abi
;
41 /* Value used by some passes to "recognize" noop moves as valid
43 #define NOOP_MOVE_INSN_CODE INT_MAX
45 /* Register Transfer Language EXPRESSIONS CODES */
47 #define RTX_CODE enum rtx_code
50 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
51 #include "rtl.def" /* rtl expressions are documented here */
54 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
56 Assumes default enum value assignment. */
58 /* The cast here, saves many elsewhere. */
59 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
61 /* Similar, but since generator files get more entries... */
63 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
66 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
69 /* We check bit 0-1 of some rtx class codes in the predicates below. */
71 /* Bit 0 = comparison if 0, arithmetic is 1
72 Bit 1 = 1 if commutative. */
78 /* Must follow the four preceding values. */
85 /* Bit 0 = 1 if constant. */
94 #define RTX_OBJ_MASK (~1)
95 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
96 #define RTX_COMPARE_MASK (~1)
97 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
98 #define RTX_ARITHMETIC_MASK (~1)
99 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
100 #define RTX_BINARY_MASK (~3)
101 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
102 #define RTX_COMMUTATIVE_MASK (~2)
103 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
104 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
106 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
107 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
109 extern const char * const rtx_name
[NUM_RTX_CODE
];
110 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
112 extern const char * const rtx_format
[NUM_RTX_CODE
];
113 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
115 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
116 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
118 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
119 and NEXT_INSN fields). */
120 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
122 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
123 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
125 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
126 relative to which the offsets are calculated, as explained in rtl.def. */
127 struct addr_diff_vec_flags
129 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
130 unsigned min_align
: 8;
132 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
133 unsigned min_after_vec
: 1; /* minimum address target label is
134 after the ADDR_DIFF_VEC. */
135 unsigned max_after_vec
: 1; /* maximum address target label is
136 after the ADDR_DIFF_VEC. */
137 unsigned min_after_base
: 1; /* minimum address target label is
139 unsigned max_after_base
: 1; /* maximum address target label is
141 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
142 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
147 /* Structure used to describe the attributes of a MEM. These are hashed
148 so MEMs that the same attributes share a data structure. This means
149 they cannot be modified in place. */
150 class GTY(()) mem_attrs
155 /* The expression that the MEM accesses, or null if not known.
156 This expression might be larger than the memory reference itself.
157 (In other words, the MEM might access only part of the object.) */
160 /* The offset of the memory reference from the start of EXPR.
161 Only valid if OFFSET_KNOWN_P. */
164 /* The size of the memory reference in bytes. Only valid if
168 /* The alias set of the memory reference. */
169 alias_set_type alias
;
171 /* The alignment of the reference in bits. Always a multiple of
172 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
173 than the memory reference itself. */
176 /* The address space that the memory reference uses. */
177 unsigned char addrspace
;
179 /* True if OFFSET is known. */
182 /* True if SIZE is known. */
186 /* Structure used to describe the attributes of a REG in similar way as
187 mem_attrs does for MEM above. Note that the OFFSET field is calculated
188 in the same way as for mem_attrs, rather than in the same way as a
189 SUBREG_BYTE. For example, if a big-endian target stores a byte
190 object in the low part of a 4-byte register, the OFFSET field
191 will be -3 rather than 0. */
193 class GTY((for_user
)) reg_attrs
{
195 tree decl
; /* decl corresponding to REG. */
196 poly_int64 offset
; /* Offset from start of DECL. */
199 /* Common union for an element of an rtx. */
204 unsigned int rt_uint
;
205 poly_uint16_pod rt_subreg
;
209 machine_mode rt_type
;
210 addr_diff_vec_flags rt_addr_diff_vec_flags
;
211 struct cselib_val
*rt_cselib
;
215 class constant_descriptor_rtx
*rt_constant
;
216 struct dw_cfi_node
*rt_cfi
;
219 /* Describes the properties of a REG. */
220 struct GTY(()) reg_info
{
221 /* The value of REGNO. */
224 /* The value of REG_NREGS. */
225 unsigned int nregs
: 8;
226 unsigned int unused
: 24;
228 /* The value of REG_ATTRS. */
232 /* This structure remembers the position of a SYMBOL_REF within an
233 object_block structure. A SYMBOL_REF only provides this information
234 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
235 struct GTY(()) block_symbol
{
236 /* The usual SYMBOL_REF fields. */
237 rtunion
GTY ((skip
)) fld
[2];
239 /* The block that contains this object. */
240 struct object_block
*block
;
242 /* The offset of this object from the start of its block. It is negative
243 if the symbol has not yet been assigned an offset. */
244 HOST_WIDE_INT offset
;
247 /* Describes a group of objects that are to be placed together in such
248 a way that their relative positions are known. */
249 struct GTY((for_user
)) object_block
{
250 /* The section in which these objects should be placed. */
253 /* The alignment of the first object, measured in bits. */
254 unsigned int alignment
;
256 /* The total size of the objects, measured in bytes. */
259 /* The SYMBOL_REFs for each object. The vector is sorted in
260 order of increasing offset and the following conditions will
261 hold for each element X:
263 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
264 !SYMBOL_REF_ANCHOR_P (X)
265 SYMBOL_REF_BLOCK (X) == [address of this structure]
266 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
267 vec
<rtx
, va_gc
> *objects
;
269 /* All the anchor SYMBOL_REFs used to address these objects, sorted
270 in order of increasing offset, and then increasing TLS model.
271 The following conditions will hold for each element X in this vector:
273 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
274 SYMBOL_REF_ANCHOR_P (X)
275 SYMBOL_REF_BLOCK (X) == [address of this structure]
276 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
277 vec
<rtx
, va_gc
> *anchors
;
280 struct GTY((variable_size
)) hwivec_def
{
281 HOST_WIDE_INT elem
[1];
284 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
285 #define CWI_GET_NUM_ELEM(RTX) \
286 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
287 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
288 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
290 struct GTY((variable_size
)) const_poly_int_def
{
291 trailing_wide_ints
<NUM_POLY_INT_COEFFS
> coeffs
;
294 /* RTL expression ("rtx"). */
296 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
297 field for gengtype to recognize that inheritance is occurring,
298 so that all subclasses are redirected to the traversal hook for the
300 However, all of the fields are in the base class, and special-casing
301 is at work. Hence we use desc and tag of 0, generating a switch
302 statement of the form:
305 case 0: // all the work happens here
307 in order to work with the existing special-casing in gengtype. */
309 struct GTY((desc("0"), tag("0"),
310 chain_next ("RTX_NEXT (&%h)"),
311 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
312 /* The kind of expression this is. */
313 ENUM_BITFIELD(rtx_code
) code
: 16;
315 /* The kind of value the expression has. */
316 ENUM_BITFIELD(machine_mode
) mode
: 8;
318 /* 1 in a MEM if we should keep the alias set for this mem unchanged
319 when we access a component.
320 1 in a JUMP_INSN if it is a crossing jump.
321 1 in a CALL_INSN if it is a sibling call.
322 1 in a SET that is for a return.
323 In a CODE_LABEL, part of the two-bit alternate entry field.
324 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
325 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
326 1 in a SUBREG generated by LRA for reload insns.
327 1 in a REG if this is a static chain register.
328 Dumped as "/j" in RTL dumps. */
329 unsigned int jump
: 1;
330 /* In a CODE_LABEL, part of the two-bit alternate entry field.
331 1 in a MEM if it cannot trap.
332 1 in a CALL_INSN logically equivalent to
333 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P.
334 1 in a VALUE is SP_DERIVED_VALUE_P in cselib.c.
335 Dumped as "/c" in RTL dumps. */
336 unsigned int call
: 1;
337 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
338 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
339 1 in a SYMBOL_REF if it addresses something in the per-function
341 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
342 1 in a NOTE, or EXPR_LIST for a const call.
343 1 in a JUMP_INSN of an annulling branch.
344 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
345 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
346 1 in a clobber temporarily created for LRA.
347 Dumped as "/u" in RTL dumps. */
348 unsigned int unchanging
: 1;
349 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
350 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
351 if it has been deleted.
352 1 in a REG expression if corresponds to a variable declared by the user,
353 0 for an internally generated temporary.
354 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
355 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
357 In a SYMBOL_REF, this flag is used for machine-specific purposes.
358 In a PREFETCH, this flag indicates that it should be considered a
360 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c.
361 Dumped as "/v" in RTL dumps. */
362 unsigned int volatil
: 1;
363 /* 1 in a REG if the register is used only in exit code a loop.
364 1 in a SUBREG expression if was generated from a variable with a
366 1 in a CODE_LABEL if the label is used for nonlocal gotos
367 and must not be deleted even if its count is zero.
368 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
369 together with the preceding insn. Valid only within sched.
370 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
371 from the target of a branch. Valid from reorg until end of compilation;
374 The name of the field is historical. It used to be used in MEMs
375 to record whether the MEM accessed part of a structure.
376 Dumped as "/s" in RTL dumps. */
377 unsigned int in_struct
: 1;
378 /* At the end of RTL generation, 1 if this rtx is used. This is used for
379 copying shared structure. See `unshare_all_rtl'.
380 In a REG, this is not needed for that purpose, and used instead
381 in `leaf_renumber_regs_insn'.
382 1 in a SYMBOL_REF, means that emit_library_call
383 has used it as the function.
384 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
385 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
386 unsigned int used
: 1;
387 /* 1 in an INSN or a SET if this rtx is related to the call frame,
388 either changing how we compute the frame address or saving and
389 restoring registers in the prologue and epilogue.
390 1 in a REG or MEM if it is a pointer.
391 1 in a SYMBOL_REF if it addresses something in the per-function
392 constant string pool.
393 1 in a VALUE is VALUE_CHANGED in var-tracking.c.
394 Dumped as "/f" in RTL dumps. */
395 unsigned frame_related
: 1;
396 /* 1 in a REG or PARALLEL that is the current function's return value.
397 1 in a SYMBOL_REF for a weak symbol.
398 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
399 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
400 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c.
401 Dumped as "/i" in RTL dumps. */
402 unsigned return_val
: 1;
405 /* The final union field is aligned to 64 bits on LP64 hosts,
406 giving a 32-bit gap after the fields above. We optimize the
407 layout for that case and use the gap for extra code-specific
410 /* The ORIGINAL_REGNO of a REG. */
411 unsigned int original_regno
;
413 /* The INSN_UID of an RTX_INSN-class code. */
416 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
417 unsigned int symbol_ref_flags
;
419 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
420 enum var_init_status var_location_status
;
422 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
423 HOST_WIDE_INTs in the hwivec_def. */
424 unsigned int num_elem
;
426 /* Information about a CONST_VECTOR. */
429 /* The value of CONST_VECTOR_NPATTERNS. */
430 unsigned int npatterns
: 16;
432 /* The value of CONST_VECTOR_NELTS_PER_PATTERN. */
433 unsigned int nelts_per_pattern
: 8;
435 /* For future expansion. */
436 unsigned int unused
: 8;
440 /* The first element of the operands of this rtx.
441 The number of operands and their types are controlled
442 by the `code' field, according to rtl.def. */
445 HOST_WIDE_INT hwint
[1];
447 struct block_symbol block_sym
;
448 struct real_value rv
;
449 struct fixed_value fv
;
450 struct hwivec_def hwiv
;
451 struct const_poly_int_def cpi
;
452 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
455 /* A node for constructing singly-linked lists of rtx. */
457 struct GTY(()) rtx_expr_list
: public rtx_def
460 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
463 /* Get next in list. */
464 rtx_expr_list
*next () const;
466 /* Get at the underlying rtx. */
467 rtx
element () const;
473 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
475 return rt
->code
== EXPR_LIST
;
478 struct GTY(()) rtx_insn_list
: public rtx_def
481 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
483 This is an instance of:
485 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
487 i.e. a node for constructing singly-linked lists of rtx_insn *, where
488 the list is "external" to the insn (as opposed to the doubly-linked
489 list embedded within rtx_insn itself). */
492 /* Get next in list. */
493 rtx_insn_list
*next () const;
495 /* Get at the underlying instruction. */
496 rtx_insn
*insn () const;
503 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
505 return rt
->code
== INSN_LIST
;
508 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
509 typically (but not always) of rtx_insn *, used in the late passes. */
511 struct GTY(()) rtx_sequence
: public rtx_def
514 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
517 /* Get number of elements in sequence. */
520 /* Get i-th element of the sequence. */
521 rtx
element (int index
) const;
523 /* Get i-th element of the sequence, with a checked cast to
525 rtx_insn
*insn (int index
) const;
531 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
533 return rt
->code
== SEQUENCE
;
539 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
541 return rt
->code
== SEQUENCE
;
544 struct GTY(()) rtx_insn
: public rtx_def
547 /* No extra fields, but adds the invariant:
551 || JUMP_TABLE_DATA_P (X)
555 i.e. that we must be able to use the following:
559 i.e. we have an rtx that has an INSN_UID field and can be part of
560 a linked list of insns.
563 /* Returns true if this insn has been deleted. */
565 bool deleted () const { return volatil
; }
567 /* Mark this insn as deleted. */
569 void set_deleted () { volatil
= true; }
571 /* Mark this insn as not deleted. */
573 void set_undeleted () { volatil
= false; }
576 /* Subclasses of rtx_insn. */
578 struct GTY(()) rtx_debug_insn
: public rtx_insn
580 /* No extra fields, but adds the invariant:
581 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
582 i.e. an annotation for tracking variable assignments.
584 This is an instance of:
585 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
589 struct GTY(()) rtx_nonjump_insn
: public rtx_insn
591 /* No extra fields, but adds the invariant:
592 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
593 i.e an instruction that cannot jump.
595 This is an instance of:
596 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
600 struct GTY(()) rtx_jump_insn
: public rtx_insn
603 /* No extra fields, but adds the invariant:
604 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
605 i.e. an instruction that can possibly jump.
607 This is an instance of:
608 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
611 /* Returns jump target of this instruction. The returned value is not
612 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
613 expression. Also, when the code label is marked "deleted", it is
614 replaced by a NOTE. In some cases the value is NULL_RTX. */
616 inline rtx
jump_label () const;
618 /* Returns jump target cast to rtx_code_label *. */
620 inline rtx_code_label
*jump_target () const;
622 /* Set jump target. */
624 inline void set_jump_target (rtx_code_label
*);
627 struct GTY(()) rtx_call_insn
: public rtx_insn
629 /* No extra fields, but adds the invariant:
630 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
631 i.e. an instruction that can possibly call a subroutine
632 but which will not change which instruction comes next
633 in the current function.
635 This is an instance of:
636 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
640 struct GTY(()) rtx_jump_table_data
: public rtx_insn
642 /* No extra fields, but adds the invariant:
643 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
644 i.e. a data for a jump table, considered an instruction for
647 This is an instance of:
648 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
651 /* This can be either:
653 (a) a table of absolute jumps, in which case PATTERN (this) is an
654 ADDR_VEC with arg 0 a vector of labels, or
656 (b) a table of relative jumps (e.g. for -fPIC), in which case
657 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
658 arg 1 the vector of labels.
660 This method gets the underlying vec. */
662 inline rtvec
get_labels () const;
663 inline scalar_int_mode
get_data_mode () const;
666 struct GTY(()) rtx_barrier
: public rtx_insn
668 /* No extra fields, but adds the invariant:
669 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
670 i.e. a marker that indicates that control will not flow through.
672 This is an instance of:
673 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
677 struct GTY(()) rtx_code_label
: public rtx_insn
679 /* No extra fields, but adds the invariant:
680 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
681 i.e. a label in the assembler.
683 This is an instance of:
684 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
688 struct GTY(()) rtx_note
: public rtx_insn
690 /* No extra fields, but adds the invariant:
691 NOTE_P(X) aka (GET_CODE (X) == NOTE)
692 i.e. a note about the corresponding source code.
694 This is an instance of:
695 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
699 /* The size in bytes of an rtx header (code, mode and flags). */
700 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
702 /* The size in bytes of an rtx with code CODE. */
703 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
705 #define NULL_RTX (rtx) 0
707 /* The "next" and "previous" RTX, relative to this one. */
709 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
710 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
712 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
714 #define RTX_PREV(X) ((INSN_P (X) \
716 || JUMP_TABLE_DATA_P (X) \
719 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
720 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
721 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
723 /* Define macros to access the `code' field of the rtx. */
725 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
726 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
728 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
729 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
731 /* RTL vector. These appear inside RTX's when there is a need
732 for a variable number of things. The principle use is inside
733 PARALLEL expressions. */
735 struct GTY(()) rtvec_def
{
736 int num_elem
; /* number of elements */
737 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
740 #define NULL_RTVEC (rtvec) 0
742 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
743 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
745 /* Predicate yielding nonzero iff X is an rtx for a register. */
746 #define REG_P(X) (GET_CODE (X) == REG)
748 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
749 #define MEM_P(X) (GET_CODE (X) == MEM)
751 #if TARGET_SUPPORTS_WIDE_INT
753 /* Match CONST_*s that can represent compile-time constant integers. */
754 #define CASE_CONST_SCALAR_INT \
758 /* Match CONST_*s for which pointer equality corresponds to value
760 #define CASE_CONST_UNIQUE \
762 case CONST_WIDE_INT: \
763 case CONST_POLY_INT: \
767 /* Match all CONST_* rtxes. */
768 #define CASE_CONST_ANY \
770 case CONST_WIDE_INT: \
771 case CONST_POLY_INT: \
778 /* Match CONST_*s that can represent compile-time constant integers. */
779 #define CASE_CONST_SCALAR_INT \
783 /* Match CONST_*s for which pointer equality corresponds to value
785 #define CASE_CONST_UNIQUE \
790 /* Match all CONST_* rtxes. */
791 #define CASE_CONST_ANY \
798 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
799 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
801 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
802 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
804 /* Predicate yielding nonzero iff X is an rtx for a polynomial constant
806 #define CONST_POLY_INT_P(X) \
807 (NUM_POLY_INT_COEFFS > 1 && GET_CODE (X) == CONST_POLY_INT)
809 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
810 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
812 /* Predicate yielding true iff X is an rtx for a double-int
813 or floating point constant. */
814 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
816 /* Predicate yielding true iff X is an rtx for a double-int. */
817 #define CONST_DOUBLE_AS_INT_P(X) \
818 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
820 /* Predicate yielding true iff X is an rtx for a integer const. */
821 #if TARGET_SUPPORTS_WIDE_INT
822 #define CONST_SCALAR_INT_P(X) \
823 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
825 #define CONST_SCALAR_INT_P(X) \
826 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
829 /* Predicate yielding true iff X is an rtx for a double-int. */
830 #define CONST_DOUBLE_AS_FLOAT_P(X) \
831 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
833 /* Predicate yielding nonzero iff X is a label insn. */
834 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
836 /* Predicate yielding nonzero iff X is a jump insn. */
837 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
839 /* Predicate yielding nonzero iff X is a call insn. */
840 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
842 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
843 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
845 /* Predicate yielding nonzero iff X is a debug note/insn. */
846 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
848 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
849 #define NONDEBUG_INSN_P(X) (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))
851 /* Nonzero if DEBUG_MARKER_INSN_P may possibly hold. */
852 #define MAY_HAVE_DEBUG_MARKER_INSNS debug_nonbind_markers_p
853 /* Nonzero if DEBUG_BIND_INSN_P may possibly hold. */
854 #define MAY_HAVE_DEBUG_BIND_INSNS flag_var_tracking_assignments
855 /* Nonzero if DEBUG_INSN_P may possibly hold. */
856 #define MAY_HAVE_DEBUG_INSNS \
857 (MAY_HAVE_DEBUG_MARKER_INSNS || MAY_HAVE_DEBUG_BIND_INSNS)
859 /* Predicate yielding nonzero iff X is a real insn. */
860 #define INSN_P(X) (NONDEBUG_INSN_P (X) || DEBUG_INSN_P (X))
862 /* Predicate yielding nonzero iff X is a note insn. */
863 #define NOTE_P(X) (GET_CODE (X) == NOTE)
865 /* Predicate yielding nonzero iff X is a barrier insn. */
866 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
868 /* Predicate yielding nonzero iff X is a data for a jump table. */
869 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
871 /* Predicate yielding nonzero iff RTX is a subreg. */
872 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
874 /* Predicate yielding true iff RTX is a symbol ref. */
875 #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
880 is_a_helper
<rtx_insn
*>::test (rtx rt
)
884 || JUMP_TABLE_DATA_P (rt
)
892 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
896 || JUMP_TABLE_DATA_P (rt
)
904 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
906 return DEBUG_INSN_P (rt
);
912 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
914 return NONJUMP_INSN_P (rt
);
920 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
928 is_a_helper
<rtx_jump_insn
*>::test (rtx_insn
*insn
)
930 return JUMP_P (insn
);
936 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
944 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
946 return CALL_P (insn
);
952 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
954 return JUMP_TABLE_DATA_P (rt
);
960 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
962 return JUMP_TABLE_DATA_P (insn
);
968 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
970 return BARRIER_P (rt
);
976 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
984 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
986 return LABEL_P (insn
);
992 is_a_helper
<rtx_note
*>::test (rtx rt
)
1000 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
1002 return NOTE_P (insn
);
1005 /* Predicate yielding nonzero iff X is a return or simple_return. */
1006 #define ANY_RETURN_P(X) \
1007 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
1009 /* 1 if X is a unary operator. */
1011 #define UNARY_P(X) \
1012 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
1014 /* 1 if X is a binary operator. */
1016 #define BINARY_P(X) \
1017 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
1019 /* 1 if X is an arithmetic operator. */
1021 #define ARITHMETIC_P(X) \
1022 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
1023 == RTX_ARITHMETIC_RESULT)
1025 /* 1 if X is an arithmetic operator. */
1027 #define COMMUTATIVE_ARITH_P(X) \
1028 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
1030 /* 1 if X is a commutative arithmetic operator or a comparison operator.
1031 These two are sometimes selected together because it is possible to
1032 swap the two operands. */
1034 #define SWAPPABLE_OPERANDS_P(X) \
1035 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
1036 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
1037 | (1 << RTX_COMPARE)))
1039 /* 1 if X is a non-commutative operator. */
1041 #define NON_COMMUTATIVE_P(X) \
1042 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1043 == RTX_NON_COMMUTATIVE_RESULT)
1045 /* 1 if X is a commutative operator on integers. */
1047 #define COMMUTATIVE_P(X) \
1048 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1049 == RTX_COMMUTATIVE_RESULT)
1051 /* 1 if X is a relational operator. */
1053 #define COMPARISON_P(X) \
1054 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1056 /* 1 if X is a constant value that is an integer. */
1058 #define CONSTANT_P(X) \
1059 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1061 /* 1 if X is a LABEL_REF. */
1062 #define LABEL_REF_P(X) \
1063 (GET_CODE (X) == LABEL_REF)
1065 /* 1 if X can be used to represent an object. */
1066 #define OBJECT_P(X) \
1067 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1069 /* General accessor macros for accessing the fields of an rtx. */
1071 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1072 /* The bit with a star outside the statement expr and an & inside is
1073 so that N can be evaluated only once. */
1074 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1075 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1076 const enum rtx_code _code = GET_CODE (_rtx); \
1077 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1078 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1080 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1081 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1083 &_rtx->u.fld[_n]; }))
1085 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1086 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1087 const enum rtx_code _code = GET_CODE (_rtx); \
1088 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1089 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1091 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1092 && GET_RTX_FORMAT (_code)[_n] != C2) \
1093 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1095 &_rtx->u.fld[_n]; }))
1097 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1098 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1099 if (GET_CODE (_rtx) != (C)) \
1100 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1102 &_rtx->u.fld[_n]; }))
1104 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1105 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1106 const enum rtx_code _code = GET_CODE (_rtx); \
1107 if (_code != (C1) && _code != (C2)) \
1108 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1110 &_rtx->u.fld[_n]; }))
1112 #define RTL_CHECKC3(RTX, N, C1, C2, C3) __extension__ \
1113 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1114 const enum rtx_code _code = GET_CODE (_rtx); \
1115 if (_code != (C1) && _code != (C2) && _code != (C3)) \
1116 rtl_check_failed_code3 (_rtx, (C1), (C2), (C3), __FILE__, \
1117 __LINE__, __FUNCTION__); \
1118 &_rtx->u.fld[_n]; }))
1120 #define RTVEC_ELT(RTVEC, I) __extension__ \
1121 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1122 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1123 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1125 &_rtvec->elem[_i]; }))
1127 #define XWINT(RTX, N) __extension__ \
1128 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1129 const enum rtx_code _code = GET_CODE (_rtx); \
1130 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1131 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1133 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1134 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1136 &_rtx->u.hwint[_n]; }))
1138 #define CWI_ELT(RTX, I) __extension__ \
1139 (*({ __typeof (RTX) const _cwi = (RTX); \
1140 int _max = CWI_GET_NUM_ELEM (_cwi); \
1141 const int _i = (I); \
1142 if (_i < 0 || _i >= _max) \
1143 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1145 &_cwi->u.hwiv.elem[_i]; }))
1147 #define XCWINT(RTX, N, C) __extension__ \
1148 (*({ __typeof (RTX) const _rtx = (RTX); \
1149 if (GET_CODE (_rtx) != (C)) \
1150 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1152 &_rtx->u.hwint[N]; }))
1154 #define XCMWINT(RTX, N, C, M) __extension__ \
1155 (*({ __typeof (RTX) const _rtx = (RTX); \
1156 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1157 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1158 __LINE__, __FUNCTION__); \
1159 &_rtx->u.hwint[N]; }))
1161 #define XCNMPRV(RTX, C, M) __extension__ \
1162 ({ __typeof (RTX) const _rtx = (RTX); \
1163 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1164 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1165 __LINE__, __FUNCTION__); \
1168 #define XCNMPFV(RTX, C, M) __extension__ \
1169 ({ __typeof (RTX) const _rtx = (RTX); \
1170 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1171 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1172 __LINE__, __FUNCTION__); \
1175 #define REG_CHECK(RTX) __extension__ \
1176 ({ __typeof (RTX) const _rtx = (RTX); \
1177 if (GET_CODE (_rtx) != REG) \
1178 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1182 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1183 ({ __typeof (RTX) const _symbol = (RTX); \
1184 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1185 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1186 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1188 &_symbol->u.block_sym; })
1190 #define HWIVEC_CHECK(RTX,C) __extension__ \
1191 ({ __typeof (RTX) const _symbol = (RTX); \
1192 RTL_CHECKC1 (_symbol, 0, C); \
1193 &_symbol->u.hwiv; })
1195 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1197 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1198 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1200 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1201 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1203 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1204 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1206 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1207 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1208 const char *, int, const char *)
1209 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1210 extern void rtl_check_failed_code3 (const_rtx
, enum rtx_code
, enum rtx_code
,
1211 enum rtx_code
, const char *, int,
1213 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1214 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1215 bool, const char *, int, const char *)
1216 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1217 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1218 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1219 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1221 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1222 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1224 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1226 #else /* not ENABLE_RTL_CHECKING */
1228 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1229 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1230 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1231 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1232 #define RTL_CHECKC3(RTX, N, C1, C2, C3) ((RTX)->u.fld[N])
1233 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1234 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1235 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1236 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1237 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1238 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1239 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1240 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1241 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1242 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1243 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1247 /* General accessor macros for accessing the flags of an rtx. */
1249 /* Access an individual rtx flag, with no checking of any kind. */
1250 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1252 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1253 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1254 ({ __typeof (RTX) const _rtx = (RTX); \
1255 if (GET_CODE (_rtx) != C1) \
1256 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1260 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1261 ({ __typeof (RTX) const _rtx = (RTX); \
1262 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1263 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1267 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1268 ({ __typeof (RTX) const _rtx = (RTX); \
1269 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1270 && GET_CODE (_rtx) != C3) \
1271 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1275 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1276 ({ __typeof (RTX) const _rtx = (RTX); \
1277 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1278 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1279 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1283 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1284 ({ __typeof (RTX) const _rtx = (RTX); \
1285 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1286 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1287 && GET_CODE (_rtx) != C5) \
1288 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1292 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1294 ({ __typeof (RTX) const _rtx = (RTX); \
1295 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1296 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1297 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1298 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1302 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1304 ({ __typeof (RTX) const _rtx = (RTX); \
1305 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1306 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1307 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1308 && GET_CODE (_rtx) != C7) \
1309 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1313 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1315 ({ __typeof (RTX) const _rtx = (RTX); \
1316 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1317 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1321 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1323 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
1326 #else /* not ENABLE_RTL_FLAG_CHECKING */
1328 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1329 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1330 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1331 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1332 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1333 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1334 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1335 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1338 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1339 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1340 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1341 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1342 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1343 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1344 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1345 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1346 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1347 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1349 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1350 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1352 /* These are like XINT, etc. except that they expect a '0' field instead
1353 of the normal type code. */
1355 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1356 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1357 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1358 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1359 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1360 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1361 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1362 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1363 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1364 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1365 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1366 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1368 /* Access a '0' field with any type. */
1369 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1371 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1372 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1373 #define XCSUBREG(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_subreg)
1374 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1375 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1376 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1377 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1378 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1379 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1380 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1381 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1383 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1384 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1386 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1387 #define XC3EXP(RTX, N, C1, C2, C3) (RTL_CHECKC3 (RTX, N, C1, C2, C3).rt_rtx)
1390 /* Methods of rtx_expr_list. */
1392 inline rtx_expr_list
*rtx_expr_list::next () const
1394 rtx tmp
= XEXP (this, 1);
1395 return safe_as_a
<rtx_expr_list
*> (tmp
);
1398 inline rtx
rtx_expr_list::element () const
1400 return XEXP (this, 0);
1403 /* Methods of rtx_insn_list. */
1405 inline rtx_insn_list
*rtx_insn_list::next () const
1407 rtx tmp
= XEXP (this, 1);
1408 return safe_as_a
<rtx_insn_list
*> (tmp
);
1411 inline rtx_insn
*rtx_insn_list::insn () const
1413 rtx tmp
= XEXP (this, 0);
1414 return safe_as_a
<rtx_insn
*> (tmp
);
1417 /* Methods of rtx_sequence. */
1419 inline int rtx_sequence::len () const
1421 return XVECLEN (this, 0);
1424 inline rtx
rtx_sequence::element (int index
) const
1426 return XVECEXP (this, 0, index
);
1429 inline rtx_insn
*rtx_sequence::insn (int index
) const
1431 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1434 /* ACCESS MACROS for particular fields of insns. */
1436 /* Holds a unique number for each insn.
1437 These are not necessarily sequentially increasing. */
1438 inline int INSN_UID (const_rtx insn
)
1440 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1441 (insn
))->u2
.insn_uid
;
1443 inline int& INSN_UID (rtx insn
)
1445 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1446 (insn
))->u2
.insn_uid
;
1449 /* Chain insns together in sequence. */
1451 /* For now these are split in two: an rvalue form:
1454 SET_NEXT_INSN/SET_PREV_INSN. */
1456 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1458 rtx prev
= XEXP (insn
, 0);
1459 return safe_as_a
<rtx_insn
*> (prev
);
1462 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1464 return XEXP (insn
, 0);
1467 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1469 rtx next
= XEXP (insn
, 1);
1470 return safe_as_a
<rtx_insn
*> (next
);
1473 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1475 return XEXP (insn
, 1);
1478 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1480 return XBBDEF (insn
, 2);
1483 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1485 return XBBDEF (insn
, 2);
1488 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1490 BLOCK_FOR_INSN (insn
) = bb
;
1493 /* The body of an insn. */
1494 inline rtx
PATTERN (const_rtx insn
)
1496 return XEXP (insn
, 3);
1499 inline rtx
& PATTERN (rtx insn
)
1501 return XEXP (insn
, 3);
1504 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1506 return XUINT (insn
, 4);
1509 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1511 return XUINT (insn
, 4);
1514 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1516 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1519 /* LOCATION of an RTX if relevant. */
1520 #define RTL_LOCATION(X) (INSN_P (X) ? \
1521 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1524 /* Code number of instruction, from when it was recognized.
1525 -1 means this instruction has not been recognized yet. */
1526 #define INSN_CODE(INSN) XINT (INSN, 5)
1528 inline rtvec
rtx_jump_table_data::get_labels () const
1530 rtx pat
= PATTERN (this);
1531 if (GET_CODE (pat
) == ADDR_VEC
)
1532 return XVEC (pat
, 0);
1534 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1537 /* Return the mode of the data in the table, which is always a scalar
1540 inline scalar_int_mode
1541 rtx_jump_table_data::get_data_mode () const
1543 return as_a
<scalar_int_mode
> (GET_MODE (PATTERN (this)));
1546 /* If LABEL is followed by a jump table, return the table, otherwise
1549 inline rtx_jump_table_data
*
1550 jump_table_for_label (const rtx_code_label
*label
)
1552 return safe_dyn_cast
<rtx_jump_table_data
*> (NEXT_INSN (label
));
1555 #define RTX_FRAME_RELATED_P(RTX) \
1556 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1557 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1559 /* 1 if JUMP RTX is a crossing jump. */
1560 #define CROSSING_JUMP_P(RTX) \
1561 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1563 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1565 #define RTL_CONST_CALL_P(RTX) \
1566 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1568 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1570 #define RTL_PURE_CALL_P(RTX) \
1571 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1573 /* 1 if RTX is a call to a const or pure function. */
1574 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1575 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1577 /* 1 if RTX is a call to a looping const or pure function. Built from
1578 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1579 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1580 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1582 /* 1 if RTX is a call_insn for a sibling call. */
1583 #define SIBLING_CALL_P(RTX) \
1584 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1586 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1587 #define INSN_ANNULLED_BRANCH_P(RTX) \
1588 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1590 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1591 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1592 executed if the branch is taken. For annulled branches with this bit
1593 clear, the insn should be executed only if the branch is not taken. */
1594 #define INSN_FROM_TARGET_P(RTX) \
1595 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1596 CALL_INSN)->in_struct)
1598 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1599 See the comments for ADDR_DIFF_VEC in rtl.def. */
1600 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1602 /* In a VALUE, the value cselib has assigned to RTX.
1603 This is a "struct cselib_val", see cselib.h. */
1604 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1606 /* Holds a list of notes on what this insn does to various REGs.
1607 It is a chain of EXPR_LIST rtx's, where the second operand is the
1608 chain pointer and the first operand is the REG being described.
1609 The mode field of the EXPR_LIST contains not a real machine mode
1610 but a value from enum reg_note. */
1611 #define REG_NOTES(INSN) XEXP(INSN, 6)
1613 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1615 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1619 #define DEF_REG_NOTE(NAME) NAME,
1620 #include "reg-notes.def"
1625 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1626 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1627 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1628 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1630 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1632 extern const char * const reg_note_name
[];
1633 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1635 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1636 USE, CLOBBER and SET expressions.
1637 USE expressions list the registers filled with arguments that
1638 are passed to the function.
1639 CLOBBER expressions document the registers explicitly clobbered
1641 SET expressions say that the return value of the call (the SET_DEST)
1642 is equivalent to a value available before the call (the SET_SRC).
1643 This kind of SET is used when the return value is predictable in
1644 advance. It is purely an optimisation hint; unlike USEs and CLOBBERs,
1645 it does not affect register liveness.
1647 Pseudo registers cannot be mentioned in this list. */
1648 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1650 /* The label-number of a code-label. The assembler label
1651 is made from `L' and the label-number printed in decimal.
1652 Label numbers are unique in a compilation. */
1653 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1655 /* In a NOTE that is a line number, this is a string for the file name that the
1656 line is in. We use the same field to record block numbers temporarily in
1657 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1658 between ints and pointers if we use a different macro for the block number.)
1662 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1663 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1664 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1665 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1666 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1667 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1668 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1669 #define NOTE_MARKER_LOCATION(INSN) XCUINT (INSN, 3, NOTE)
1670 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1671 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1673 /* In a NOTE that is a line number, this is the line number.
1674 Other kinds of NOTEs are identified by negative numbers here. */
1675 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1677 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1678 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1679 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1681 /* Nonzero if INSN is a debug nonbind marker note,
1682 for which NOTE_MARKER_LOCATION can be used. */
1683 #define NOTE_MARKER_P(INSN) \
1685 (NOTE_KIND (INSN) == NOTE_INSN_BEGIN_STMT \
1686 || NOTE_KIND (INSN) == NOTE_INSN_INLINE_ENTRY))
1688 /* Variable declaration and the location of a variable. */
1689 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1690 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1692 /* Initialization status of the variable in the location. Status
1693 can be unknown, uninitialized or initialized. See enumeration
1695 #define PAT_VAR_LOCATION_STATUS(PAT) \
1696 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1697 ->u2.var_location_status)
1699 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1700 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1701 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1702 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1703 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1704 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1705 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1707 /* Evaluate to TRUE if INSN is a debug insn that denotes a variable
1708 location/value tracking annotation. */
1709 #define DEBUG_BIND_INSN_P(INSN) \
1710 (DEBUG_INSN_P (INSN) \
1711 && (GET_CODE (PATTERN (INSN)) \
1713 /* Evaluate to TRUE if INSN is a debug insn that denotes a program
1714 source location marker. */
1715 #define DEBUG_MARKER_INSN_P(INSN) \
1716 (DEBUG_INSN_P (INSN) \
1717 && (GET_CODE (PATTERN (INSN)) \
1719 /* Evaluate to the marker kind. */
1720 #define INSN_DEBUG_MARKER_KIND(INSN) \
1721 (GET_CODE (PATTERN (INSN)) == DEBUG_MARKER \
1722 ? (GET_MODE (PATTERN (INSN)) == VOIDmode \
1723 ? NOTE_INSN_BEGIN_STMT \
1724 : GET_MODE (PATTERN (INSN)) == BLKmode \
1725 ? NOTE_INSN_INLINE_ENTRY \
1726 : (enum insn_note)-1) \
1727 : (enum insn_note)-1)
1728 /* Create patterns for debug markers. These and the above abstract
1729 the representation, so that it's easier to get rid of the abuse of
1730 the mode to hold the marker kind. Other marker types are
1731 envisioned, so a single bit flag won't do; maybe separate RTL codes
1732 wouldn't be a problem. */
1733 #define GEN_RTX_DEBUG_MARKER_BEGIN_STMT_PAT() \
1734 gen_rtx_DEBUG_MARKER (VOIDmode)
1735 #define GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT() \
1736 gen_rtx_DEBUG_MARKER (BLKmode)
1738 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1739 #define INSN_VAR_LOCATION(INSN) \
1740 (RTL_FLAG_CHECK1 ("INSN_VAR_LOCATION", PATTERN (INSN), VAR_LOCATION))
1741 /* A pointer to the VAR_LOCATION rtx in a DEBUG_INSN. */
1742 #define INSN_VAR_LOCATION_PTR(INSN) \
1745 /* Accessors for a tree-expanded var location debug insn. */
1746 #define INSN_VAR_LOCATION_DECL(INSN) \
1747 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1748 #define INSN_VAR_LOCATION_LOC(INSN) \
1749 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1750 #define INSN_VAR_LOCATION_STATUS(INSN) \
1751 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1753 /* Expand to the RTL that denotes an unknown variable location in a
1755 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1757 /* Determine whether X is such an unknown location. */
1758 #define VAR_LOC_UNKNOWN_P(X) \
1759 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1761 /* 1 if RTX is emitted after a call, but it should take effect before
1762 the call returns. */
1763 #define NOTE_DURING_CALL_P(RTX) \
1764 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1766 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1767 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1769 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1770 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1772 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1773 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1775 /* Codes that appear in the NOTE_KIND field for kinds of notes
1776 that are not line numbers. These codes are all negative.
1778 Notice that we do not try to use zero here for any of
1779 the special note codes because sometimes the source line
1780 actually can be zero! This happens (for example) when we
1781 are generating code for the per-translation-unit constructor
1782 and destructor routines for some C++ translation unit. */
1786 #define DEF_INSN_NOTE(NAME) NAME,
1787 #include "insn-notes.def"
1788 #undef DEF_INSN_NOTE
1793 /* Names for NOTE insn's other than line numbers. */
1795 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1796 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1797 (note_insn_name[(NOTE_CODE)])
1799 /* The name of a label, in case it corresponds to an explicit label
1800 in the input source code. */
1801 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1803 /* In jump.c, each label contains a count of the number
1804 of LABEL_REFs that point at it, so unused labels can be deleted. */
1805 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1807 /* Labels carry a two-bit field composed of the ->jump and ->call
1808 bits. This field indicates whether the label is an alternate
1809 entry point, and if so, what kind. */
1812 LABEL_NORMAL
= 0, /* ordinary label */
1813 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1814 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1815 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1818 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1820 /* Retrieve the kind of LABEL. */
1821 #define LABEL_KIND(LABEL) __extension__ \
1822 ({ __typeof (LABEL) const _label = (LABEL); \
1823 if (! LABEL_P (_label)) \
1824 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1826 (enum label_kind) ((_label->jump << 1) | _label->call); })
1828 /* Set the kind of LABEL. */
1829 #define SET_LABEL_KIND(LABEL, KIND) do { \
1830 __typeof (LABEL) const _label = (LABEL); \
1831 const unsigned int _kind = (KIND); \
1832 if (! LABEL_P (_label)) \
1833 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1835 _label->jump = ((_kind >> 1) & 1); \
1836 _label->call = (_kind & 1); \
1841 /* Retrieve the kind of LABEL. */
1842 #define LABEL_KIND(LABEL) \
1843 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1845 /* Set the kind of LABEL. */
1846 #define SET_LABEL_KIND(LABEL, KIND) do { \
1847 rtx const _label = (LABEL); \
1848 const unsigned int _kind = (KIND); \
1849 _label->jump = ((_kind >> 1) & 1); \
1850 _label->call = (_kind & 1); \
1853 #endif /* rtl flag checking */
1855 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1857 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1858 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1859 be decremented and possibly the label can be deleted. */
1860 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1862 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1864 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1867 /* Methods of rtx_jump_insn. */
1869 inline rtx
rtx_jump_insn::jump_label () const
1871 return JUMP_LABEL (this);
1874 inline rtx_code_label
*rtx_jump_insn::jump_target () const
1876 return safe_as_a
<rtx_code_label
*> (JUMP_LABEL (this));
1879 inline void rtx_jump_insn::set_jump_target (rtx_code_label
*target
)
1881 JUMP_LABEL (this) = target
;
1884 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1885 goes through all the LABEL_REFs that jump to that label. The chain
1886 eventually winds up at the CODE_LABEL: it is circular. */
1887 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1889 /* Get the label that a LABEL_REF references. */
1890 static inline rtx_insn
*
1891 label_ref_label (const_rtx ref
)
1893 return as_a
<rtx_insn
*> (XCEXP (ref
, 0, LABEL_REF
));
1896 /* Set the label that LABEL_REF ref refers to. */
1899 set_label_ref_label (rtx ref
, rtx_insn
*label
)
1901 XCEXP (ref
, 0, LABEL_REF
) = label
;
1904 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1905 be used on RHS. Use SET_REGNO to change the value. */
1906 #define REGNO(RTX) (rhs_regno(RTX))
1907 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1909 /* Return the number of consecutive registers in a REG. This is always
1910 1 for pseudo registers and is determined by TARGET_HARD_REGNO_NREGS for
1912 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1914 /* ORIGINAL_REGNO holds the number the register originally had; for a
1915 pseudo register turned into a hard reg this will hold the old pseudo
1917 #define ORIGINAL_REGNO(RTX) \
1918 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1920 /* Force the REGNO macro to only be used on the lhs. */
1921 static inline unsigned int
1922 rhs_regno (const_rtx x
)
1924 return REG_CHECK (x
)->regno
;
1927 /* Return the final register in REG X plus one. */
1928 static inline unsigned int
1929 END_REGNO (const_rtx x
)
1931 return REGNO (x
) + REG_NREGS (x
);
1934 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1935 bypassing the df machinery. */
1937 set_regno_raw (rtx x
, unsigned int regno
, unsigned int nregs
)
1939 reg_info
*reg
= REG_CHECK (x
);
1944 /* 1 if RTX is a reg or parallel that is the current function's return
1946 #define REG_FUNCTION_VALUE_P(RTX) \
1947 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1949 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1950 #define REG_USERVAR_P(RTX) \
1951 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1953 /* 1 if RTX is a reg that holds a pointer value. */
1954 #define REG_POINTER(RTX) \
1955 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1957 /* 1 if RTX is a mem that holds a pointer value. */
1958 #define MEM_POINTER(RTX) \
1959 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1961 /* 1 if the given register REG corresponds to a hard register. */
1962 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1964 /* 1 if the given register number REG_NO corresponds to a hard register. */
1965 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1967 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1968 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1969 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1971 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1972 elements actually needed to represent the constant.
1973 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1974 significant HOST_WIDE_INT. */
1975 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1976 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1977 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1979 /* For a CONST_POLY_INT, CONST_POLY_INT_COEFFS gives access to the
1980 individual coefficients, in the form of a trailing_wide_ints structure. */
1981 #define CONST_POLY_INT_COEFFS(RTX) \
1982 (RTL_FLAG_CHECK1("CONST_POLY_INT_COEFFS", (RTX), \
1983 CONST_POLY_INT)->u.cpi.coeffs)
1985 /* For a CONST_DOUBLE:
1986 #if TARGET_SUPPORTS_WIDE_INT == 0
1987 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1988 low-order word and ..._HIGH the high-order.
1990 For a float, there is a REAL_VALUE_TYPE structure, and
1991 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1992 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1993 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1994 #define CONST_DOUBLE_REAL_VALUE(r) \
1995 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1997 #define CONST_FIXED_VALUE(r) \
1998 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1999 #define CONST_FIXED_VALUE_HIGH(r) \
2000 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
2001 #define CONST_FIXED_VALUE_LOW(r) \
2002 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
2004 /* For a CONST_VECTOR, return element #n. */
2005 #define CONST_VECTOR_ELT(RTX, N) const_vector_elt (RTX, N)
2007 /* See rtl.texi for a description of these macros. */
2008 #define CONST_VECTOR_NPATTERNS(RTX) \
2009 (RTL_FLAG_CHECK1 ("CONST_VECTOR_NPATTERNS", (RTX), CONST_VECTOR) \
2010 ->u2.const_vector.npatterns)
2012 #define CONST_VECTOR_NELTS_PER_PATTERN(RTX) \
2013 (RTL_FLAG_CHECK1 ("CONST_VECTOR_NELTS_PER_PATTERN", (RTX), CONST_VECTOR) \
2014 ->u2.const_vector.nelts_per_pattern)
2016 #define CONST_VECTOR_DUPLICATE_P(RTX) \
2017 (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 1)
2019 #define CONST_VECTOR_STEPPED_P(RTX) \
2020 (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 3)
2022 #define CONST_VECTOR_ENCODED_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
2024 /* Return the number of elements encoded directly in a CONST_VECTOR. */
2027 const_vector_encoded_nelts (const_rtx x
)
2029 return CONST_VECTOR_NPATTERNS (x
) * CONST_VECTOR_NELTS_PER_PATTERN (x
);
2032 /* For a CONST_VECTOR, return the number of elements in a vector. */
2033 #define CONST_VECTOR_NUNITS(RTX) GET_MODE_NUNITS (GET_MODE (RTX))
2035 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
2036 SUBREG_BYTE extracts the byte-number. */
2038 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
2039 #define SUBREG_BYTE(RTX) XCSUBREG (RTX, 1, SUBREG)
2042 /* Return the right cost to give to an operation
2043 to make the cost of the corresponding register-to-register instruction
2044 N times that of a fast register-to-register instruction. */
2045 #define COSTS_N_INSNS(N) ((N) * 4)
2047 /* Maximum cost of an rtl expression. This value has the special meaning
2048 not to use an rtx with this cost under any circumstances. */
2049 #define MAX_COST INT_MAX
2051 /* Return true if CODE always has VOIDmode. */
2054 always_void_p (enum rtx_code code
)
2059 /* A structure to hold all available cost information about an rtl
2061 struct full_rtx_costs
2067 /* Initialize a full_rtx_costs structure C to the maximum cost. */
2069 init_costs_to_max (struct full_rtx_costs
*c
)
2071 c
->speed
= MAX_COST
;
2075 /* Initialize a full_rtx_costs structure C to zero cost. */
2077 init_costs_to_zero (struct full_rtx_costs
*c
)
2083 /* Compare two full_rtx_costs structures A and B, returning true
2084 if A < B when optimizing for speed. */
2086 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
2090 return (a
->speed
< b
->speed
2091 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
2093 return (a
->size
< b
->size
2094 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
2097 /* Increase both members of the full_rtx_costs structure C by the
2100 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
2102 c
->speed
+= COSTS_N_INSNS (n
);
2103 c
->size
+= COSTS_N_INSNS (n
);
2106 /* Describes the shape of a subreg:
2108 inner_mode == the mode of the SUBREG_REG
2109 offset == the SUBREG_BYTE
2110 outer_mode == the mode of the SUBREG itself. */
2111 class subreg_shape
{
2113 subreg_shape (machine_mode
, poly_uint16
, machine_mode
);
2114 bool operator == (const subreg_shape
&) const;
2115 bool operator != (const subreg_shape
&) const;
2116 unsigned HOST_WIDE_INT
unique_id () const;
2118 machine_mode inner_mode
;
2120 machine_mode outer_mode
;
2124 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
2125 poly_uint16 offset_in
,
2126 machine_mode outer_mode_in
)
2127 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
2131 subreg_shape::operator == (const subreg_shape
&other
) const
2133 return (inner_mode
== other
.inner_mode
2134 && known_eq (offset
, other
.offset
)
2135 && outer_mode
== other
.outer_mode
);
2139 subreg_shape::operator != (const subreg_shape
&other
) const
2141 return !operator == (other
);
2144 /* Return an integer that uniquely identifies this shape. Structures
2145 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
2146 current mode is anywhere near being 65536 bytes in size, so the
2147 id comfortably fits in an int. */
2149 inline unsigned HOST_WIDE_INT
2150 subreg_shape::unique_id () const
2152 { STATIC_ASSERT (MAX_MACHINE_MODE
<= 256); }
2153 { STATIC_ASSERT (NUM_POLY_INT_COEFFS
<= 3); }
2154 { STATIC_ASSERT (sizeof (offset
.coeffs
[0]) <= 2); }
2155 int res
= (int) inner_mode
+ ((int) outer_mode
<< 8);
2156 for (int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2157 res
+= (HOST_WIDE_INT
) offset
.coeffs
[i
] << ((1 + i
) * 16);
2161 /* Return the shape of a SUBREG rtx. */
2163 static inline subreg_shape
2164 shape_of_subreg (const_rtx x
)
2166 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
2167 SUBREG_BYTE (x
), GET_MODE (x
));
2170 /* Information about an address. This structure is supposed to be able
2171 to represent all supported target addresses. Please extend it if it
2172 is not yet general enough. */
2173 struct address_info
{
2174 /* The mode of the value being addressed, or VOIDmode if this is
2175 a load-address operation with no known address mode. */
2178 /* The address space. */
2181 /* True if this is an RTX_AUTOINC address. */
2184 /* A pointer to the top-level address. */
2187 /* A pointer to the inner address, after all address mutations
2188 have been stripped from the top-level address. It can be one
2191 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2193 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2194 points to the step value, depending on whether the step is variable
2195 or constant respectively. SEGMENT is null.
2197 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2198 with null fields evaluating to 0. */
2201 /* Components that make up *INNER. Each one may be null or nonnull.
2202 When nonnull, their meanings are as follows:
2204 - *SEGMENT is the "segment" of memory to which the address refers.
2205 This value is entirely target-specific and is only called a "segment"
2206 because that's its most typical use. It contains exactly one UNSPEC,
2207 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2210 - *BASE is a variable expression representing a base address.
2211 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2213 - *INDEX is a variable expression representing an index value.
2214 It may be a scaled expression, such as a MULT. It has exactly
2215 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2217 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2218 unmutated RTX_CONST_OBJ. */
2229 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2230 of BASE_TERM, otherwise it is null. */
2233 /* ADDRESS if this structure describes an address operand, MEM if
2234 it describes a MEM address. */
2235 enum rtx_code addr_outer_code
;
2237 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2238 enum rtx_code base_outer_code
;
2241 /* This is used to bundle an rtx and a mode together so that the pair
2242 can be used with the wi:: routines. If we ever put modes into rtx
2243 integer constants, this should go away and then just pass an rtx in. */
2244 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
2249 struct int_traits
<rtx_mode_t
>
2251 static const enum precision_type precision_type
= VAR_PRECISION
;
2252 static const bool host_dependent_precision
= false;
2253 /* This ought to be true, except for the special case that BImode
2254 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2255 static const bool is_sign_extended
= false;
2256 static unsigned int get_precision (const rtx_mode_t
&);
2257 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
2258 const rtx_mode_t
&);
2263 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
2265 return GET_MODE_PRECISION (as_a
<scalar_mode
> (x
.second
));
2268 inline wi::storage_ref
2269 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
2270 unsigned int precision
,
2271 const rtx_mode_t
&x
)
2273 gcc_checking_assert (precision
== get_precision (x
));
2274 switch (GET_CODE (x
.first
))
2277 if (precision
< HOST_BITS_PER_WIDE_INT
)
2278 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2279 targets is 1 rather than -1. */
2280 gcc_checking_assert (INTVAL (x
.first
)
2281 == sext_hwi (INTVAL (x
.first
), precision
)
2282 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2284 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2286 case CONST_WIDE_INT
:
2287 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2288 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2290 #if TARGET_SUPPORTS_WIDE_INT == 0
2292 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2302 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2303 wide_int
min_value (machine_mode
, signop
);
2304 wide_int
max_value (machine_mode
, signop
);
2307 inline wi::hwi_with_prec
2308 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2310 return shwi (val
, GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)));
2313 /* Produce the smallest number that is represented in MODE. The precision
2314 is taken from MODE and the sign from SGN. */
2316 wi::min_value (machine_mode mode
, signop sgn
)
2318 return min_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2321 /* Produce the largest number that is represented in MODE. The precision
2322 is taken from MODE and the sign from SGN. */
2324 wi::max_value (machine_mode mode
, signop sgn
)
2326 return max_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2331 typedef poly_int
<NUM_POLY_INT_COEFFS
,
2332 generic_wide_int
<wide_int_ref_storage
<false, false> > >
2333 rtx_to_poly_wide_ref
;
2334 rtx_to_poly_wide_ref
to_poly_wide (const_rtx
, machine_mode
);
2337 /* Return the value of a CONST_POLY_INT in its native precision. */
2339 inline wi::rtx_to_poly_wide_ref
2340 const_poly_int_value (const_rtx x
)
2342 poly_int
<NUM_POLY_INT_COEFFS
, WIDE_INT_REF_FOR (wide_int
)> res
;
2343 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2344 res
.coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
];
2348 /* Return true if X is a scalar integer or a CONST_POLY_INT. The value
2349 can then be extracted using wi::to_poly_wide. */
2352 poly_int_rtx_p (const_rtx x
)
2354 return CONST_SCALAR_INT_P (x
) || CONST_POLY_INT_P (x
);
2357 /* Access X (which satisfies poly_int_rtx_p) as a poly_wide_int.
2358 MODE is the mode of X. */
2360 inline wi::rtx_to_poly_wide_ref
2361 wi::to_poly_wide (const_rtx x
, machine_mode mode
)
2363 if (CONST_POLY_INT_P (x
))
2364 return const_poly_int_value (x
);
2365 return rtx_mode_t (const_cast<rtx
> (x
), mode
);
2368 /* Return the value of X as a poly_int64. */
2371 rtx_to_poly_int64 (const_rtx x
)
2373 if (CONST_POLY_INT_P (x
))
2376 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2377 res
.coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
].to_shwi ();
2383 /* Return true if arbitrary value X is an integer constant that can
2384 be represented as a poly_int64. Store the value in *RES if so,
2385 otherwise leave it unmodified. */
2388 poly_int_rtx_p (const_rtx x
, poly_int64_pod
*res
)
2390 if (CONST_INT_P (x
))
2395 if (CONST_POLY_INT_P (x
))
2397 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2398 if (!wi::fits_shwi_p (CONST_POLY_INT_COEFFS (x
)[i
]))
2400 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2401 res
->coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
].to_shwi ();
2407 extern void init_rtlanal (void);
2408 extern int rtx_cost (rtx
, machine_mode
, enum rtx_code
, int, bool);
2409 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2410 extern void get_full_rtx_cost (rtx
, machine_mode
, enum rtx_code
, int,
2411 struct full_rtx_costs
*);
2412 extern bool native_encode_rtx (machine_mode
, rtx
, vec
<target_unit
> &,
2413 unsigned int, unsigned int);
2414 extern rtx
native_decode_rtx (machine_mode
, vec
<target_unit
>,
2416 extern rtx
native_decode_vector_rtx (machine_mode
, vec
<target_unit
>,
2417 unsigned int, unsigned int, unsigned int);
2418 extern poly_uint64
subreg_lsb (const_rtx
);
2419 extern poly_uint64
subreg_size_lsb (poly_uint64
, poly_uint64
, poly_uint64
);
2420 extern poly_uint64
subreg_size_offset_from_lsb (poly_uint64
, poly_uint64
,
2422 extern bool read_modify_subreg_p (const_rtx
);
2424 /* Given a subreg's OUTER_MODE, INNER_MODE, and SUBREG_BYTE, return the
2425 bit offset at which the subreg begins (counting from the least significant
2426 bit of the operand). */
2429 subreg_lsb_1 (machine_mode outer_mode
, machine_mode inner_mode
,
2430 poly_uint64 subreg_byte
)
2432 return subreg_size_lsb (GET_MODE_SIZE (outer_mode
),
2433 GET_MODE_SIZE (inner_mode
), subreg_byte
);
2436 /* Return the subreg byte offset for a subreg whose outer mode is
2437 OUTER_MODE, whose inner mode is INNER_MODE, and where there are
2438 LSB_SHIFT *bits* between the lsb of the outer value and the lsb of
2439 the inner value. This is the inverse of subreg_lsb_1 (which converts
2440 byte offsets to bit shifts). */
2443 subreg_offset_from_lsb (machine_mode outer_mode
,
2444 machine_mode inner_mode
,
2445 poly_uint64 lsb_shift
)
2447 return subreg_size_offset_from_lsb (GET_MODE_SIZE (outer_mode
),
2448 GET_MODE_SIZE (inner_mode
), lsb_shift
);
2451 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2452 poly_uint64
, machine_mode
);
2453 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2454 poly_uint64
, machine_mode
);
2455 extern unsigned int subreg_regno (const_rtx
);
2456 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2457 poly_uint64
, machine_mode
);
2458 extern unsigned int subreg_nregs (const_rtx
);
2459 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2460 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2461 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2462 extern bool constant_pool_constant_p (rtx
);
2463 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2464 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2465 extern void split_double (rtx
, rtx
*, rtx
*);
2466 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2467 extern void decompose_address (struct address_info
*, rtx
*,
2468 machine_mode
, addr_space_t
, enum rtx_code
);
2469 extern void decompose_lea_address (struct address_info
*, rtx
*);
2470 extern void decompose_mem_address (struct address_info
*, rtx
);
2471 extern void update_address (struct address_info
*);
2472 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2473 extern enum rtx_code
get_index_code (const struct address_info
*);
2475 /* 1 if RTX is a subreg containing a reg that is already known to be
2476 sign- or zero-extended from the mode of the subreg to the mode of
2477 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2480 When used as a LHS, is means that this extension must be done
2481 when assigning to SUBREG_REG. */
2483 #define SUBREG_PROMOTED_VAR_P(RTX) \
2484 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2486 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2487 this gives the necessary extensions:
2488 0 - signed (SPR_SIGNED)
2489 1 - normal unsigned (SPR_UNSIGNED)
2490 2 - value is both sign and unsign extended for mode
2491 (SPR_SIGNED_AND_UNSIGNED).
2492 -1 - pointer unsigned, which most often can be handled like unsigned
2493 extension, except for generating instructions where we need to
2494 emit special code (ptr_extend insns) on some architectures
2497 const int SRP_POINTER
= -1;
2498 const int SRP_SIGNED
= 0;
2499 const int SRP_UNSIGNED
= 1;
2500 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2502 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2503 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2505 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2510 _rtx->volatil = 0; \
2511 _rtx->unchanging = 0; \
2514 _rtx->volatil = 0; \
2515 _rtx->unchanging = 1; \
2517 case SRP_UNSIGNED: \
2518 _rtx->volatil = 1; \
2519 _rtx->unchanging = 0; \
2521 case SRP_SIGNED_AND_UNSIGNED: \
2522 _rtx->volatil = 1; \
2523 _rtx->unchanging = 1; \
2528 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2529 including SRP_SIGNED_AND_UNSIGNED if promoted for
2530 both signed and unsigned. */
2531 #define SUBREG_PROMOTED_GET(RTX) \
2532 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2533 + (RTX)->unchanging - 1)
2535 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2536 #define SUBREG_PROMOTED_SIGN(RTX) \
2537 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2538 : (RTX)->unchanging - 1)
2540 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2542 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2543 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2545 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2546 for UNSIGNED type. */
2547 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2548 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2550 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2551 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2552 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2553 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2554 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2556 /* True if the REG is the static chain register for some CALL_INSN. */
2557 #define STATIC_CHAIN_REG_P(RTX) \
2558 (RTL_FLAG_CHECK1 ("STATIC_CHAIN_REG_P", (RTX), REG)->jump)
2560 /* True if the subreg was generated by LRA for reload insns. Such
2561 subregs are valid only during LRA. */
2562 #define LRA_SUBREG_P(RTX) \
2563 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2565 /* Access various components of an ASM_OPERANDS rtx. */
2567 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2568 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2569 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2570 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2571 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2572 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2573 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2574 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2575 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2576 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2577 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2578 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2579 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2580 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2581 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2582 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2583 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2584 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2586 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2587 #define MEM_READONLY_P(RTX) \
2588 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2590 /* 1 if RTX is a mem and we should keep the alias set for this mem
2591 unchanged when we access a component. Set to 1, or example, when we
2592 are already in a non-addressable component of an aggregate. */
2593 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2594 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2596 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2597 #define MEM_VOLATILE_P(RTX) \
2598 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2599 ASM_INPUT)->volatil)
2601 /* 1 if RTX is a mem that cannot trap. */
2602 #define MEM_NOTRAP_P(RTX) \
2603 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2605 /* The memory attribute block. We provide access macros for each value
2606 in the block and provide defaults if none specified. */
2607 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2609 /* The register attribute block. We provide access macros for each value
2610 in the block and provide defaults if none specified. */
2611 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2613 #ifndef GENERATOR_FILE
2614 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2615 set, and may alias anything. Otherwise, the MEM can only alias
2616 MEMs in a conflicting alias set. This value is set in a
2617 language-dependent manner in the front-end, and should not be
2618 altered in the back-end. These set numbers are tested with
2619 alias_sets_conflict_p. */
2620 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2622 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2623 refer to part of a DECL. It may also be a COMPONENT_REF. */
2624 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2626 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2627 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2629 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2630 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2632 /* For a MEM rtx, the address space. */
2633 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2635 /* For a MEM rtx, true if its MEM_SIZE is known. */
2636 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2638 /* For a MEM rtx, the size in bytes of the MEM. */
2639 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2641 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2642 mode as a default when STRICT_ALIGNMENT, but not if not. */
2643 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2645 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2648 /* For a REG rtx, the decl it is known to refer to, if it is known to
2649 refer to part of a DECL. */
2650 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2652 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2654 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2656 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2657 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2658 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2659 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2660 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2661 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2662 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2663 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2665 /* 1 if RTX is a label_ref for a nonlocal label. */
2666 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2667 REG_LABEL_TARGET note. */
2668 #define LABEL_REF_NONLOCAL_P(RTX) \
2669 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2671 /* 1 if RTX is a code_label that should always be considered to be needed. */
2672 #define LABEL_PRESERVE_P(RTX) \
2673 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2675 /* During sched, 1 if RTX is an insn that must be scheduled together
2676 with the preceding insn. */
2677 #define SCHED_GROUP_P(RTX) \
2678 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2679 JUMP_INSN, CALL_INSN)->in_struct)
2681 /* For a SET rtx, SET_DEST is the place that is set
2682 and SET_SRC is the value it is set to. */
2683 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2684 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2685 #define SET_IS_RETURN_P(RTX) \
2686 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2688 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2689 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2690 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2692 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2693 conditionally executing the code on, COND_EXEC_CODE is the code
2694 to execute if the condition is true. */
2695 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2696 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2698 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2700 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2701 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2703 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2704 tree constant pool. This information is private to varasm.c. */
2705 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2706 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2707 (RTX), SYMBOL_REF)->frame_related)
2709 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2710 #define SYMBOL_REF_FLAG(RTX) \
2711 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2713 /* 1 if RTX is a symbol_ref that has been the library function in
2714 emit_library_call. */
2715 #define SYMBOL_REF_USED(RTX) \
2716 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2718 /* 1 if RTX is a symbol_ref for a weak symbol. */
2719 #define SYMBOL_REF_WEAK(RTX) \
2720 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2722 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2723 SYMBOL_REF_CONSTANT. */
2724 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2726 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2728 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2729 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2731 /* The tree (decl or constant) associated with the symbol, or null. */
2732 #define SYMBOL_REF_DECL(RTX) \
2733 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2735 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2736 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2737 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2739 /* The rtx constant pool entry for a symbol, or null. */
2740 #define SYMBOL_REF_CONSTANT(RTX) \
2741 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2743 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2744 information derivable from the tree decl associated with this symbol.
2745 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2746 decl. In some cases this is a bug. But beyond that, it's nice to cache
2747 this information to avoid recomputing it. Finally, this allows space for
2748 the target to store more than one bit of information, as with
2750 #define SYMBOL_REF_FLAGS(RTX) \
2751 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2752 ->u2.symbol_ref_flags)
2754 /* These flags are common enough to be defined for all targets. They
2755 are computed by the default version of targetm.encode_section_info. */
2757 /* Set if this symbol is a function. */
2758 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2759 #define SYMBOL_REF_FUNCTION_P(RTX) \
2760 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2761 /* Set if targetm.binds_local_p is true. */
2762 #define SYMBOL_FLAG_LOCAL (1 << 1)
2763 #define SYMBOL_REF_LOCAL_P(RTX) \
2764 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2765 /* Set if targetm.in_small_data_p is true. */
2766 #define SYMBOL_FLAG_SMALL (1 << 2)
2767 #define SYMBOL_REF_SMALL_P(RTX) \
2768 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2769 /* The three-bit field at [5:3] is true for TLS variables; use
2770 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2771 #define SYMBOL_FLAG_TLS_SHIFT 3
2772 #define SYMBOL_REF_TLS_MODEL(RTX) \
2773 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2774 /* Set if this symbol is not defined in this translation unit. */
2775 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2776 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2777 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2778 /* Set if this symbol has a block_symbol structure associated with it. */
2779 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2780 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2781 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2782 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2783 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2784 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2785 #define SYMBOL_REF_ANCHOR_P(RTX) \
2786 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2788 /* Subsequent bits are available for the target to use. */
2789 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2790 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2792 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2793 structure to which the symbol belongs, or NULL if it has not been
2794 assigned a block. */
2795 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2797 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2798 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2799 RTX has not yet been assigned to a block, or it has not been given an
2800 offset within that block. */
2801 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2803 /* True if RTX is flagged to be a scheduling barrier. */
2804 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2805 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2807 /* Indicate whether the machine has any sort of auto increment addressing.
2808 If not, we can avoid checking for REG_INC notes. */
2810 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2811 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2812 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2813 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2814 #define AUTO_INC_DEC 1
2816 #define AUTO_INC_DEC 0
2819 /* Define a macro to look for REG_INC notes,
2820 but save time on machines where they never exist. */
2823 #define FIND_REG_INC_NOTE(INSN, REG) \
2824 ((REG) != NULL_RTX && REG_P ((REG)) \
2825 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2826 : find_reg_note ((INSN), REG_INC, (REG)))
2828 #define FIND_REG_INC_NOTE(INSN, REG) 0
2831 #ifndef HAVE_PRE_INCREMENT
2832 #define HAVE_PRE_INCREMENT 0
2835 #ifndef HAVE_PRE_DECREMENT
2836 #define HAVE_PRE_DECREMENT 0
2839 #ifndef HAVE_POST_INCREMENT
2840 #define HAVE_POST_INCREMENT 0
2843 #ifndef HAVE_POST_DECREMENT
2844 #define HAVE_POST_DECREMENT 0
2847 #ifndef HAVE_POST_MODIFY_DISP
2848 #define HAVE_POST_MODIFY_DISP 0
2851 #ifndef HAVE_POST_MODIFY_REG
2852 #define HAVE_POST_MODIFY_REG 0
2855 #ifndef HAVE_PRE_MODIFY_DISP
2856 #define HAVE_PRE_MODIFY_DISP 0
2859 #ifndef HAVE_PRE_MODIFY_REG
2860 #define HAVE_PRE_MODIFY_REG 0
2864 /* Some architectures do not have complete pre/post increment/decrement
2865 instruction sets, or only move some modes efficiently. These macros
2866 allow us to tune autoincrement generation. */
2868 #ifndef USE_LOAD_POST_INCREMENT
2869 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2872 #ifndef USE_LOAD_POST_DECREMENT
2873 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2876 #ifndef USE_LOAD_PRE_INCREMENT
2877 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2880 #ifndef USE_LOAD_PRE_DECREMENT
2881 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2884 #ifndef USE_STORE_POST_INCREMENT
2885 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2888 #ifndef USE_STORE_POST_DECREMENT
2889 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2892 #ifndef USE_STORE_PRE_INCREMENT
2893 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2896 #ifndef USE_STORE_PRE_DECREMENT
2897 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2900 /* Nonzero when we are generating CONCATs. */
2901 extern int generating_concat_p
;
2903 /* Nonzero when we are expanding trees to RTL. */
2904 extern int currently_expanding_to_rtl
;
2906 /* Generally useful functions. */
2908 #ifndef GENERATOR_FILE
2909 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2910 rather than size. */
2913 set_rtx_cost (rtx x
, bool speed_p
)
2915 return rtx_cost (x
, VOIDmode
, INSN
, 4, speed_p
);
2918 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2921 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2923 get_full_rtx_cost (x
, VOIDmode
, INSN
, 4, c
);
2926 /* Return the cost of moving X into a register, relative to the cost
2927 of a register move. SPEED_P is true if optimizing for speed rather
2931 set_src_cost (rtx x
, machine_mode mode
, bool speed_p
)
2933 return rtx_cost (x
, mode
, SET
, 1, speed_p
);
2936 /* Like set_src_cost, but return both the speed and size costs in C. */
2939 get_full_set_src_cost (rtx x
, machine_mode mode
, struct full_rtx_costs
*c
)
2941 get_full_rtx_cost (x
, mode
, SET
, 1, c
);
2945 /* A convenience macro to validate the arguments of a zero_extract
2946 expression. It determines whether SIZE lies inclusively within
2947 [1, RANGE], POS lies inclusively within between [0, RANGE - 1]
2948 and the sum lies inclusively within [1, RANGE]. RANGE must be
2949 >= 1, but SIZE and POS may be negative. */
2950 #define EXTRACT_ARGS_IN_RANGE(SIZE, POS, RANGE) \
2951 (IN_RANGE ((POS), 0, (unsigned HOST_WIDE_INT) (RANGE) - 1) \
2952 && IN_RANGE ((SIZE), 1, (unsigned HOST_WIDE_INT) (RANGE) \
2953 - (unsigned HOST_WIDE_INT)(POS)))
2956 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2957 extern poly_int64
trunc_int_for_mode (poly_int64
, machine_mode
);
2958 extern rtx
plus_constant (machine_mode
, rtx
, poly_int64
, bool = false);
2959 extern HOST_WIDE_INT
get_stack_check_protect (void);
2962 extern rtx
rtx_alloc (RTX_CODE CXX_MEM_STAT_INFO
);
2964 rtx_init (rtx rt
, RTX_CODE code
)
2966 memset (rt
, 0, RTX_HDR_SIZE
);
2967 PUT_CODE (rt
, code
);
2970 #define rtx_alloca(code) \
2971 rtx_init ((rtx) alloca (RTX_CODE_SIZE ((code))), (code))
2972 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2973 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2974 #define const_wide_int_alloc(NWORDS) \
2975 rtx_alloc_v (CONST_WIDE_INT, \
2976 (sizeof (struct hwivec_def) \
2977 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2979 extern rtvec rtvec_alloc (int);
2980 extern rtvec
shallow_copy_rtvec (rtvec
);
2981 extern bool shared_const_p (const_rtx
);
2982 extern rtx
copy_rtx (rtx
);
2983 extern enum rtx_code
classify_insn (rtx
);
2984 extern void dump_rtx_statistics (void);
2987 extern rtx
copy_rtx_if_shared (rtx
);
2990 extern unsigned int rtx_size (const_rtx
);
2991 extern rtx
shallow_copy_rtx (const_rtx CXX_MEM_STAT_INFO
);
2992 extern int rtx_equal_p (const_rtx
, const_rtx
);
2993 extern bool rtvec_all_equal_p (const_rtvec
);
2995 /* Return true if X is a vector constant with a duplicated element value. */
2998 const_vec_duplicate_p (const_rtx x
)
3000 return (GET_CODE (x
) == CONST_VECTOR
3001 && CONST_VECTOR_NPATTERNS (x
) == 1
3002 && CONST_VECTOR_DUPLICATE_P (x
));
3005 /* Return true if X is a vector constant with a duplicated element value.
3006 Store the duplicated element in *ELT if so. */
3008 template <typename T
>
3010 const_vec_duplicate_p (T x
, T
*elt
)
3012 if (const_vec_duplicate_p (x
))
3014 *elt
= CONST_VECTOR_ENCODED_ELT (x
, 0);
3020 /* Return true if X is a vector with a duplicated element value, either
3021 constant or nonconstant. Store the duplicated element in *ELT if so. */
3023 template <typename T
>
3025 vec_duplicate_p (T x
, T
*elt
)
3027 if (GET_CODE (x
) == VEC_DUPLICATE
3028 && !VECTOR_MODE_P (GET_MODE (XEXP (x
, 0))))
3033 return const_vec_duplicate_p (x
, elt
);
3036 /* If X is a vector constant with a duplicated element value, return that
3037 element value, otherwise return X. */
3039 template <typename T
>
3041 unwrap_const_vec_duplicate (T x
)
3043 if (const_vec_duplicate_p (x
))
3044 x
= CONST_VECTOR_ELT (x
, 0);
3048 /* In emit-rtl.c. */
3049 extern wide_int
const_vector_int_elt (const_rtx
, unsigned int);
3050 extern rtx
const_vector_elt (const_rtx
, unsigned int);
3051 extern bool const_vec_series_p_1 (const_rtx
, rtx
*, rtx
*);
3053 /* Return true if X is an integer constant vector that contains a linear
3056 { B, B + S, B + 2 * S, B + 3 * S, ... }
3058 for a nonzero S. Store B and S in *BASE_OUT and *STEP_OUT on sucess. */
3061 const_vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
3063 if (GET_CODE (x
) == CONST_VECTOR
3064 && CONST_VECTOR_NPATTERNS (x
) == 1
3065 && !CONST_VECTOR_DUPLICATE_P (x
))
3066 return const_vec_series_p_1 (x
, base_out
, step_out
);
3070 /* Return true if X is a vector that contains a linear series of the
3073 { B, B + S, B + 2 * S, B + 3 * S, ... }
3075 where B and S are constant or nonconstant. Store B and S in
3076 *BASE_OUT and *STEP_OUT on sucess. */
3079 vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
3081 if (GET_CODE (x
) == VEC_SERIES
)
3083 *base_out
= XEXP (x
, 0);
3084 *step_out
= XEXP (x
, 1);
3087 return const_vec_series_p (x
, base_out
, step_out
);
3090 /* Return the unpromoted (outer) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3092 inline scalar_int_mode
3093 subreg_unpromoted_mode (rtx x
)
3095 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
3096 return as_a
<scalar_int_mode
> (GET_MODE (x
));
3099 /* Return the promoted (inner) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3101 inline scalar_int_mode
3102 subreg_promoted_mode (rtx x
)
3104 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
3105 return as_a
<scalar_int_mode
> (GET_MODE (SUBREG_REG (x
)));
3109 extern rtvec
gen_rtvec_v (int, rtx
*);
3110 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
3111 extern rtx
gen_reg_rtx (machine_mode
);
3112 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, poly_int64
);
3113 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
3114 extern rtx
gen_reg_rtx_and_attrs (rtx
);
3115 extern rtx_code_label
*gen_label_rtx (void);
3116 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
3119 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
3122 extern rtx
gen_highpart (machine_mode
, rtx
);
3123 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
3124 extern rtx
operand_subword (rtx
, poly_uint64
, int, machine_mode
);
3127 extern rtx
operand_subword_force (rtx
, poly_uint64
, machine_mode
);
3128 extern int subreg_lowpart_p (const_rtx
);
3129 extern poly_uint64
subreg_size_lowpart_offset (poly_uint64
, poly_uint64
);
3131 /* Return true if a subreg of mode OUTERMODE would only access part of
3132 an inner register with mode INNERMODE. The other bits of the inner
3133 register would then be "don't care" on read. The behavior for writes
3134 depends on REGMODE_NATURAL_SIZE; bits in the same REGMODE_NATURAL_SIZE-d
3135 chunk would be clobbered but other bits would be preserved. */
3138 partial_subreg_p (machine_mode outermode
, machine_mode innermode
)
3140 /* Modes involved in a subreg must be ordered. In particular, we must
3141 always know at compile time whether the subreg is paradoxical. */
3142 poly_int64 outer_prec
= GET_MODE_PRECISION (outermode
);
3143 poly_int64 inner_prec
= GET_MODE_PRECISION (innermode
);
3144 gcc_checking_assert (ordered_p (outer_prec
, inner_prec
));
3145 return maybe_lt (outer_prec
, inner_prec
);
3148 /* Likewise return true if X is a subreg that is smaller than the inner
3149 register. Use read_modify_subreg_p to test whether writing to such
3150 a subreg preserves any part of the inner register. */
3153 partial_subreg_p (const_rtx x
)
3155 if (GET_CODE (x
) != SUBREG
)
3157 return partial_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3160 /* Return true if a subreg with the given outer and inner modes is
3164 paradoxical_subreg_p (machine_mode outermode
, machine_mode innermode
)
3166 /* Modes involved in a subreg must be ordered. In particular, we must
3167 always know at compile time whether the subreg is paradoxical. */
3168 poly_int64 outer_prec
= GET_MODE_PRECISION (outermode
);
3169 poly_int64 inner_prec
= GET_MODE_PRECISION (innermode
);
3170 gcc_checking_assert (ordered_p (outer_prec
, inner_prec
));
3171 return maybe_gt (outer_prec
, inner_prec
);
3174 /* Return true if X is a paradoxical subreg, false otherwise. */
3177 paradoxical_subreg_p (const_rtx x
)
3179 if (GET_CODE (x
) != SUBREG
)
3181 return paradoxical_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3184 /* Return the SUBREG_BYTE for an OUTERMODE lowpart of an INNERMODE value. */
3187 subreg_lowpart_offset (machine_mode outermode
, machine_mode innermode
)
3189 return subreg_size_lowpart_offset (GET_MODE_SIZE (outermode
),
3190 GET_MODE_SIZE (innermode
));
3193 /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3194 return the smaller of the two modes if they are different sizes,
3195 otherwise return the outer mode. */
3198 narrower_subreg_mode (machine_mode outermode
, machine_mode innermode
)
3200 return paradoxical_subreg_p (outermode
, innermode
) ? innermode
: outermode
;
3203 /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3204 return the mode that is big enough to hold both the outer and inner
3205 values. Prefer the outer mode in the event of a tie. */
3208 wider_subreg_mode (machine_mode outermode
, machine_mode innermode
)
3210 return partial_subreg_p (outermode
, innermode
) ? innermode
: outermode
;
3213 /* Likewise for subreg X. */
3216 wider_subreg_mode (const_rtx x
)
3218 return wider_subreg_mode (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3221 extern poly_uint64
subreg_size_highpart_offset (poly_uint64
, poly_uint64
);
3223 /* Return the SUBREG_BYTE for an OUTERMODE highpart of an INNERMODE value. */
3226 subreg_highpart_offset (machine_mode outermode
, machine_mode innermode
)
3228 return subreg_size_highpart_offset (GET_MODE_SIZE (outermode
),
3229 GET_MODE_SIZE (innermode
));
3232 extern poly_int64
byte_lowpart_offset (machine_mode
, machine_mode
);
3233 extern poly_int64
subreg_memory_offset (machine_mode
, machine_mode
,
3235 extern poly_int64
subreg_memory_offset (const_rtx
);
3236 extern rtx
make_safe_from (rtx
, rtx
);
3237 extern rtx
convert_memory_address_addr_space_1 (scalar_int_mode
, rtx
,
3238 addr_space_t
, bool, bool);
3239 extern rtx
convert_memory_address_addr_space (scalar_int_mode
, rtx
,
3241 #define convert_memory_address(to_mode,x) \
3242 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
3243 extern const char *get_insn_name (int);
3244 extern rtx_insn
*get_last_insn_anywhere (void);
3245 extern rtx_insn
*get_first_nonnote_insn (void);
3246 extern rtx_insn
*get_last_nonnote_insn (void);
3247 extern void start_sequence (void);
3248 extern void push_to_sequence (rtx_insn
*);
3249 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
3250 extern void end_sequence (void);
3251 #if TARGET_SUPPORTS_WIDE_INT == 0
3252 extern double_int
rtx_to_double_int (const_rtx
);
3254 extern void cwi_output_hex (FILE *, const_rtx
);
3255 #if TARGET_SUPPORTS_WIDE_INT == 0
3256 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
3259 extern rtx
immed_wide_int_const (const poly_wide_int_ref
&, machine_mode
);
3262 extern rtx
force_const_mem (machine_mode
, rtx
);
3267 extern rtx
get_pool_constant (const_rtx
);
3268 extern rtx
get_pool_constant_mark (rtx
, bool *);
3269 extern fixed_size_mode
get_pool_mode (const_rtx
);
3270 extern rtx
simplify_subtraction (rtx
);
3271 extern void decide_function_section (tree
);
3274 extern rtx_insn
*emit_insn_before (rtx
, rtx_insn
*);
3275 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
3276 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3277 extern rtx_jump_insn
*emit_jump_insn_before (rtx
, rtx_insn
*);
3278 extern rtx_jump_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
3279 extern rtx_jump_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*,
3281 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
3282 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
3283 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3284 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx_insn
*);
3285 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx_insn
*);
3286 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3287 extern rtx_barrier
*emit_barrier_before (rtx_insn
*);
3288 extern rtx_code_label
*emit_label_before (rtx_code_label
*, rtx_insn
*);
3289 extern rtx_note
*emit_note_before (enum insn_note
, rtx_insn
*);
3290 extern rtx_insn
*emit_insn_after (rtx
, rtx_insn
*);
3291 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx_insn
*, basic_block
);
3292 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3293 extern rtx_jump_insn
*emit_jump_insn_after (rtx
, rtx_insn
*);
3294 extern rtx_jump_insn
*emit_jump_insn_after_noloc (rtx
, rtx_insn
*);
3295 extern rtx_jump_insn
*emit_jump_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3296 extern rtx_insn
*emit_call_insn_after (rtx
, rtx_insn
*);
3297 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx_insn
*);
3298 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3299 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx_insn
*);
3300 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx_insn
*);
3301 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3302 extern rtx_barrier
*emit_barrier_after (rtx_insn
*);
3303 extern rtx_insn
*emit_label_after (rtx_insn
*, rtx_insn
*);
3304 extern rtx_note
*emit_note_after (enum insn_note
, rtx_insn
*);
3305 extern rtx_insn
*emit_insn (rtx
);
3306 extern rtx_insn
*emit_debug_insn (rtx
);
3307 extern rtx_insn
*emit_jump_insn (rtx
);
3308 extern rtx_insn
*emit_call_insn (rtx
);
3309 extern rtx_code_label
*emit_label (rtx
);
3310 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
3311 extern rtx_barrier
*emit_barrier (void);
3312 extern rtx_note
*emit_note (enum insn_note
);
3313 extern rtx_note
*emit_note_copy (rtx_note
*);
3314 extern rtx_insn
*gen_clobber (rtx
);
3315 extern rtx_insn
*emit_clobber (rtx
);
3316 extern rtx_insn
*gen_use (rtx
);
3317 extern rtx_insn
*emit_use (rtx
);
3318 extern rtx_insn
*make_insn_raw (rtx
);
3319 extern void add_function_usage_to (rtx
, rtx
);
3320 extern rtx_call_insn
*last_call_insn (void);
3321 extern rtx_insn
*previous_insn (rtx_insn
*);
3322 extern rtx_insn
*next_insn (rtx_insn
*);
3323 extern rtx_insn
*prev_nonnote_insn (rtx_insn
*);
3324 extern rtx_insn
*next_nonnote_insn (rtx_insn
*);
3325 extern rtx_insn
*prev_nondebug_insn (rtx_insn
*);
3326 extern rtx_insn
*next_nondebug_insn (rtx_insn
*);
3327 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx_insn
*);
3328 extern rtx_insn
*prev_nonnote_nondebug_insn_bb (rtx_insn
*);
3329 extern rtx_insn
*next_nonnote_nondebug_insn (rtx_insn
*);
3330 extern rtx_insn
*next_nonnote_nondebug_insn_bb (rtx_insn
*);
3331 extern rtx_insn
*prev_real_insn (rtx_insn
*);
3332 extern rtx_insn
*next_real_insn (rtx_insn
*);
3333 extern rtx_insn
*prev_real_nondebug_insn (rtx_insn
*);
3334 extern rtx_insn
*next_real_nondebug_insn (rtx
);
3335 extern rtx_insn
*prev_active_insn (rtx_insn
*);
3336 extern rtx_insn
*next_active_insn (rtx_insn
*);
3337 extern int active_insn_p (const rtx_insn
*);
3338 extern rtx_insn
*next_cc0_user (rtx_insn
*);
3339 extern rtx_insn
*prev_cc0_setter (rtx_insn
*);
3342 extern int insn_line (const rtx_insn
*);
3343 extern const char * insn_file (const rtx_insn
*);
3344 extern tree
insn_scope (const rtx_insn
*);
3345 extern expanded_location
insn_location (const rtx_insn
*);
3346 extern location_t prologue_location
, epilogue_location
;
3349 extern enum rtx_code
reverse_condition (enum rtx_code
);
3350 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
3351 extern enum rtx_code
swap_condition (enum rtx_code
);
3352 extern enum rtx_code
unsigned_condition (enum rtx_code
);
3353 extern enum rtx_code
signed_condition (enum rtx_code
);
3354 extern void mark_jump_label (rtx
, rtx_insn
*, int);
3356 /* Return true if integer comparison operator CODE interprets its operands
3360 unsigned_condition_p (enum rtx_code code
)
3362 return unsigned_condition (code
) == code
;
3366 extern rtx_insn
*delete_related_insns (rtx
);
3369 extern rtx
*find_constant_term_loc (rtx
*);
3372 extern rtx_insn
*try_split (rtx
, rtx_insn
*, int);
3374 /* In insn-recog.c (generated by genrecog). */
3375 extern rtx_insn
*split_insns (rtx
, rtx_insn
*);
3377 /* In simplify-rtx.c */
3379 /* A class that records the context in which a simplification
3381 class simplify_context
3384 rtx
simplify_unary_operation (rtx_code
, machine_mode
, rtx
, machine_mode
);
3385 rtx
simplify_binary_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3386 rtx
simplify_ternary_operation (rtx_code
, machine_mode
, machine_mode
,
3388 rtx
simplify_relational_operation (rtx_code
, machine_mode
, machine_mode
,
3390 rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
, poly_uint64
);
3392 rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
3394 rtx
simplify_merge_mask (rtx
, rtx
, int);
3396 rtx
simplify_gen_unary (rtx_code
, machine_mode
, rtx
, machine_mode
);
3397 rtx
simplify_gen_binary (rtx_code
, machine_mode
, rtx
, rtx
);
3398 rtx
simplify_gen_ternary (rtx_code
, machine_mode
, machine_mode
,
3400 rtx
simplify_gen_relational (rtx_code
, machine_mode
, machine_mode
, rtx
, rtx
);
3401 rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
, poly_uint64
);
3403 /* Tracks the level of MEM nesting for the value being simplified:
3404 0 means the value is not in a MEM, >0 means it is. This is needed
3405 because the canonical representation of multiplication is different
3406 inside a MEM than outside. */
3407 unsigned int mem_depth
= 0;
3410 rtx
simplify_truncation (machine_mode
, rtx
, machine_mode
);
3411 rtx
simplify_byte_swapping_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3412 rtx
simplify_associative_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3413 rtx
simplify_distributive_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3414 rtx
simplify_logical_relational_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3415 rtx
simplify_binary_operation_series (rtx_code
, machine_mode
, rtx
, rtx
);
3416 rtx
simplify_distribute_over_subregs (rtx_code
, machine_mode
, rtx
, rtx
);
3417 rtx
simplify_shift_const_int (rtx_code
, machine_mode
, rtx
, unsigned int);
3418 rtx
simplify_plus_minus (rtx_code
, machine_mode
, rtx
, rtx
);
3419 rtx
simplify_cond_clz_ctz (rtx
, rtx_code
, rtx
, rtx
);
3421 rtx
simplify_unary_operation_1 (rtx_code
, machine_mode
, rtx
);
3422 rtx
simplify_binary_operation_1 (rtx_code
, machine_mode
, rtx
, rtx
, rtx
, rtx
);
3423 rtx
simplify_ternary_operation_1 (rtx_code
, machine_mode
, machine_mode
,
3425 rtx
simplify_relational_operation_1 (rtx_code
, machine_mode
, machine_mode
,
3430 simplify_unary_operation (rtx_code code
, machine_mode mode
, rtx op
,
3431 machine_mode op_mode
)
3433 return simplify_context ().simplify_unary_operation (code
, mode
, op
,
3438 simplify_binary_operation (rtx_code code
, machine_mode mode
, rtx op0
, rtx op1
)
3440 return simplify_context ().simplify_binary_operation (code
, mode
, op0
, op1
);
3444 simplify_ternary_operation (rtx_code code
, machine_mode mode
,
3445 machine_mode op0_mode
, rtx op0
, rtx op1
, rtx op2
)
3447 return simplify_context ().simplify_ternary_operation (code
, mode
, op0_mode
,
3452 simplify_relational_operation (rtx_code code
, machine_mode mode
,
3453 machine_mode op_mode
, rtx op0
, rtx op1
)
3455 return simplify_context ().simplify_relational_operation (code
, mode
,
3460 simplify_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
,
3463 return simplify_context ().simplify_subreg (outermode
, op
, innermode
, byte
);
3467 simplify_gen_unary (rtx_code code
, machine_mode mode
, rtx op
,
3468 machine_mode op_mode
)
3470 return simplify_context ().simplify_gen_unary (code
, mode
, op
, op_mode
);
3474 simplify_gen_binary (rtx_code code
, machine_mode mode
, rtx op0
, rtx op1
)
3476 return simplify_context ().simplify_gen_binary (code
, mode
, op0
, op1
);
3480 simplify_gen_ternary (rtx_code code
, machine_mode mode
, machine_mode op0_mode
,
3481 rtx op0
, rtx op1
, rtx op2
)
3483 return simplify_context ().simplify_gen_ternary (code
, mode
, op0_mode
,
3488 simplify_gen_relational (rtx_code code
, machine_mode mode
,
3489 machine_mode op_mode
, rtx op0
, rtx op1
)
3491 return simplify_context ().simplify_gen_relational (code
, mode
, op_mode
,
3496 simplify_gen_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
,
3499 return simplify_context ().simplify_gen_subreg (outermode
, op
,
3504 lowpart_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
)
3506 return simplify_context ().lowpart_subreg (outermode
, op
, innermode
);
3509 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
3511 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
3513 extern rtx
simplify_const_relational_operation (enum rtx_code
,
3514 machine_mode
, rtx
, rtx
);
3515 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
3516 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
3517 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
3518 extern rtx
simplify_rtx (const_rtx
);
3519 extern rtx
avoid_constant_pool_reference (rtx
);
3520 extern rtx
delegitimize_mem_from_attrs (rtx
);
3521 extern bool mode_signbit_p (machine_mode
, const_rtx
);
3522 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
3523 extern bool val_signbit_known_set_p (machine_mode
,
3524 unsigned HOST_WIDE_INT
);
3525 extern bool val_signbit_known_clear_p (machine_mode
,
3526 unsigned HOST_WIDE_INT
);
3529 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
3530 const predefined_function_abi
*);
3531 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
3534 extern rtx
set_for_reg_notes (rtx
);
3535 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
3536 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
3537 extern void set_insn_deleted (rtx_insn
*);
3539 /* Functions in rtlanal.c */
3541 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
3542 extern bool contains_symbol_ref_p (const_rtx
);
3543 extern bool contains_symbolic_reference_p (const_rtx
);
3544 extern bool contains_constant_pool_address_p (const_rtx
);
3545 extern void add_auto_inc_notes (rtx_insn
*, rtx
);
3547 /* Handle the cheap and common cases inline for performance. */
3549 inline rtx
single_set (const rtx_insn
*insn
)
3554 if (GET_CODE (PATTERN (insn
)) == SET
)
3555 return PATTERN (insn
);
3557 /* Defer to the more expensive case. */
3558 return single_set_2 (insn
, PATTERN (insn
));
3561 extern scalar_int_mode
get_address_mode (rtx mem
);
3562 extern int rtx_addr_can_trap_p (const_rtx
);
3563 extern bool nonzero_address_p (const_rtx
);
3564 extern int rtx_unstable_p (const_rtx
);
3565 extern bool rtx_varies_p (const_rtx
, bool);
3566 extern bool rtx_addr_varies_p (const_rtx
, bool);
3567 extern rtx
get_call_rtx_from (const rtx_insn
*);
3568 extern tree
get_call_fndecl (const rtx_insn
*);
3569 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
3570 extern rtx
get_related_value (const_rtx
);
3571 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
3572 extern void split_const (rtx
, rtx
*, rtx
*);
3573 extern rtx
strip_offset (rtx
, poly_int64_pod
*);
3574 extern poly_int64
get_args_size (const_rtx
);
3575 extern bool unsigned_reg_p (rtx
);
3576 extern int reg_mentioned_p (const_rtx
, const_rtx
);
3577 extern int count_occurrences (const_rtx
, const_rtx
, int);
3578 extern int reg_referenced_p (const_rtx
, const_rtx
);
3579 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3580 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3581 extern int commutative_operand_precedence (rtx
);
3582 extern bool swap_commutative_operands_p (rtx
, rtx
);
3583 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3584 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
3585 extern int modified_in_p (const_rtx
, const_rtx
);
3586 extern int reg_set_p (const_rtx
, const_rtx
);
3587 extern int multiple_sets (const_rtx
);
3588 extern int set_noop_p (const_rtx
);
3589 extern int noop_move_p (const rtx_insn
*);
3590 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
3591 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
3592 extern const_rtx
set_of (const_rtx
, const_rtx
);
3593 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
3594 extern void record_hard_reg_uses (rtx
*, void *);
3595 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
3596 extern void find_all_hard_reg_sets (const rtx_insn
*, HARD_REG_SET
*, bool);
3597 extern void note_pattern_stores (const_rtx
,
3598 void (*) (rtx
, const_rtx
, void *), void *);
3599 extern void note_stores (const rtx_insn
*,
3600 void (*) (rtx
, const_rtx
, void *), void *);
3601 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
3602 extern int dead_or_set_p (const rtx_insn
*, const_rtx
);
3603 extern int dead_or_set_regno_p (const rtx_insn
*, unsigned int);
3604 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
3605 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
3606 extern rtx
find_reg_equal_equiv_note (const_rtx
);
3607 extern rtx
find_constant_src (const rtx_insn
*);
3608 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
3609 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
3610 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
3611 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
3612 extern void add_int_reg_note (rtx_insn
*, enum reg_note
, int);
3613 extern void add_args_size_note (rtx_insn
*, poly_int64
);
3614 extern void add_shallow_copy_of_reg_note (rtx_insn
*, rtx
);
3615 extern rtx
duplicate_reg_note (rtx
);
3616 extern void remove_note (rtx_insn
*, const_rtx
);
3617 extern bool remove_reg_equal_equiv_notes (rtx_insn
*, bool = false);
3618 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3619 extern int side_effects_p (const_rtx
);
3620 extern int volatile_refs_p (const_rtx
);
3621 extern int volatile_insn_p (const_rtx
);
3622 extern int may_trap_p_1 (const_rtx
, unsigned);
3623 extern int may_trap_p (const_rtx
);
3624 extern int may_trap_or_fault_p (const_rtx
);
3625 extern bool can_throw_internal (const_rtx
);
3626 extern bool can_throw_external (const_rtx
);
3627 extern bool insn_could_throw_p (const_rtx
);
3628 extern bool insn_nothrow_p (const_rtx
);
3629 extern bool can_nonlocal_goto (const rtx_insn
*);
3630 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
3631 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
3632 extern rtx
replace_rtx (rtx
, rtx
, rtx
, bool = false);
3633 extern void replace_label (rtx
*, rtx
, rtx
, bool);
3634 extern void replace_label_in_insn (rtx_insn
*, rtx_insn
*, rtx_insn
*, bool);
3635 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
3636 extern bool tablejump_p (const rtx_insn
*, rtx_insn
**, rtx_jump_table_data
**);
3637 extern rtx
tablejump_casesi_pattern (const rtx_insn
*insn
);
3638 extern int computed_jump_p (const rtx_insn
*);
3639 extern bool tls_referenced_p (const_rtx
);
3640 extern bool contains_mem_rtx_p (rtx x
);
3641 extern bool register_asm_p (const_rtx
);
3643 /* Overload for refers_to_regno_p for checking a single register. */
3645 refers_to_regno_p (unsigned int regnum
, const_rtx x
, rtx
* loc
= NULL
)
3647 return refers_to_regno_p (regnum
, regnum
+ 1, x
, loc
);
3650 /* Callback for for_each_inc_dec, to process the autoinc operation OP
3651 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3652 NULL. The callback is passed the same opaque ARG passed to
3653 for_each_inc_dec. Return zero to continue looking for other
3654 autoinc operations or any other value to interrupt the traversal and
3655 return that value to the caller of for_each_inc_dec. */
3656 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
3657 rtx srcoff
, void *arg
);
3658 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
3660 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
3662 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
3663 rtx_equal_p_callback_function
);
3665 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
3667 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
3668 bool, hash_rtx_callback_function
);
3670 extern rtx
regno_use_in (unsigned int, rtx
);
3671 extern int auto_inc_p (const_rtx
);
3672 extern bool in_insn_list_p (const rtx_insn_list
*, const rtx_insn
*);
3673 extern void remove_node_from_expr_list (const_rtx
, rtx_expr_list
**);
3674 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
3675 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
3676 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
3677 extern bool keep_with_call_p (const rtx_insn
*);
3678 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
3679 extern int pattern_cost (rtx
, bool);
3680 extern int insn_cost (rtx_insn
*, bool);
3681 extern unsigned seq_cost (const rtx_insn
*, bool);
3683 /* Given an insn and condition, return a canonical description of
3684 the test being made. */
3685 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
3688 /* Given a JUMP_INSN, return a canonical description of the test
3690 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
3692 /* Information about a subreg of a hard register. */
3695 /* Offset of first hard register involved in the subreg. */
3697 /* Number of hard registers involved in the subreg. In the case of
3698 a paradoxical subreg, this is the number of registers that would
3699 be modified by writing to the subreg; some of them may be don't-care
3700 when reading from the subreg. */
3702 /* Whether this subreg can be represented as a hard reg with the new
3703 mode (by adding OFFSET to the original hard register). */
3704 bool representable_p
;
3707 extern void subreg_get_info (unsigned int, machine_mode
,
3708 poly_uint64
, machine_mode
,
3709 struct subreg_info
*);
3713 extern void free_EXPR_LIST_list (rtx_expr_list
**);
3714 extern void free_INSN_LIST_list (rtx_insn_list
**);
3715 extern void free_EXPR_LIST_node (rtx
);
3716 extern void free_INSN_LIST_node (rtx
);
3717 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
3718 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
3719 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
3720 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
3721 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
3722 extern rtx
remove_list_elem (rtx
, rtx
*);
3723 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
3724 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
3729 /* Resize reg info. */
3730 extern bool resize_reg_info (void);
3731 /* Free up register info memory. */
3732 extern void free_reg_info (void);
3733 extern void init_subregs_of_mode (void);
3734 extern void finish_subregs_of_mode (void);
3737 extern rtx
extract_asm_operands (rtx
);
3738 extern int asm_noperands (const_rtx
);
3739 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
3740 machine_mode
*, location_t
*);
3741 extern void get_referenced_operands (const char *, bool *, unsigned int);
3743 extern enum reg_class
reg_preferred_class (int);
3744 extern enum reg_class
reg_alternate_class (int);
3745 extern enum reg_class
reg_allocno_class (int);
3746 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
3749 extern void split_all_insns (void);
3750 extern unsigned int split_all_insns_noflow (void);
3752 #define MAX_SAVED_CONST_INT 64
3753 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
3755 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3756 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3757 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3758 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3759 extern GTY(()) rtx const_true_rtx
;
3761 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3763 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3764 same as VOIDmode. */
3766 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3768 /* Likewise, for the constants 1 and 2 and -1. */
3770 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3771 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3772 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3774 extern GTY(()) rtx pc_rtx
;
3775 extern GTY(()) rtx cc0_rtx
;
3776 extern GTY(()) rtx ret_rtx
;
3777 extern GTY(()) rtx simple_return_rtx
;
3778 extern GTY(()) rtx_insn
*invalid_insn_rtx
;
3780 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3781 is used to represent the frame pointer. This is because the
3782 hard frame pointer and the automatic variables are separated by an amount
3783 that cannot be determined until after register allocation. We can assume
3784 that in this case ELIMINABLE_REGS will be defined, one action of which
3785 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3786 #ifndef HARD_FRAME_POINTER_REGNUM
3787 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3790 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3791 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3792 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3795 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3796 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3797 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3800 /* Index labels for global_rtl. */
3801 enum global_rtl_index
3805 /* For register elimination to work properly these hard_frame_pointer_rtx,
3806 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3807 the same register. */
3808 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3809 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3811 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3812 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3814 GR_HARD_FRAME_POINTER
,
3816 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3817 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3818 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3823 GR_VIRTUAL_INCOMING_ARGS
,
3824 GR_VIRTUAL_STACK_ARGS
,
3825 GR_VIRTUAL_STACK_DYNAMIC
,
3826 GR_VIRTUAL_OUTGOING_ARGS
,
3828 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3833 /* Target-dependent globals. */
3834 struct GTY(()) target_rtl
{
3835 /* All references to the hard registers in global_rtl_index go through
3836 these unique rtl objects. On machines where the frame-pointer and
3837 arg-pointer are the same register, they use the same unique object.
3839 After register allocation, other rtl objects which used to be pseudo-regs
3840 may be clobbered to refer to the frame-pointer register.
3841 But references that were originally to the frame-pointer can be
3842 distinguished from the others because they contain frame_pointer_rtx.
3844 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3845 tricky: until register elimination has taken place hard_frame_pointer_rtx
3846 should be used if it is being set, and frame_pointer_rtx otherwise. After
3847 register elimination hard_frame_pointer_rtx should always be used.
3848 On machines where the two registers are same (most) then these are the
3850 rtx x_global_rtl
[GR_MAX
];
3852 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3853 rtx x_pic_offset_table_rtx
;
3855 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3856 This is used to implement __builtin_return_address for some machines;
3857 see for instance the MIPS port. */
3858 rtx x_return_address_pointer_rtx
;
3860 /* Commonly used RTL for hard registers. These objects are not
3861 necessarily unique, so we allocate them separately from global_rtl.
3862 They are initialized once per compilation unit, then copied into
3863 regno_reg_rtx at the beginning of each function. */
3864 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3866 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3867 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3869 /* Static hunks of RTL used by the aliasing code; these are treated
3870 as persistent to avoid unnecessary RTL allocations. */
3871 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3873 /* The default memory attributes for each mode. */
3874 class mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3876 /* Track if RTL has been initialized. */
3877 bool target_specific_initialized
;
3880 extern GTY(()) struct target_rtl default_target_rtl
;
3881 #if SWITCHABLE_TARGET
3882 extern struct target_rtl
*this_target_rtl
;
3884 #define this_target_rtl (&default_target_rtl)
3887 #define global_rtl \
3888 (this_target_rtl->x_global_rtl)
3889 #define pic_offset_table_rtx \
3890 (this_target_rtl->x_pic_offset_table_rtx)
3891 #define return_address_pointer_rtx \
3892 (this_target_rtl->x_return_address_pointer_rtx)
3893 #define top_of_stack \
3894 (this_target_rtl->x_top_of_stack)
3895 #define mode_mem_attrs \
3896 (this_target_rtl->x_mode_mem_attrs)
3898 /* All references to certain hard regs, except those created
3899 by allocating pseudo regs into them (when that's possible),
3900 go through these unique rtx objects. */
3901 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3902 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3903 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3904 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3906 #ifndef GENERATOR_FILE
3907 /* Return the attributes of a MEM rtx. */
3908 static inline const class mem_attrs
*
3909 get_mem_attrs (const_rtx x
)
3911 class mem_attrs
*attrs
;
3913 attrs
= MEM_ATTRS (x
);
3915 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3920 /* Include the RTL generation functions. */
3922 #ifndef GENERATOR_FILE
3924 #undef gen_rtx_ASM_INPUT
3925 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3926 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3927 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3928 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3931 /* There are some RTL codes that require special attention; the
3932 generation functions included above do the raw handling. If you
3933 add to this list, modify special_rtx in gengenrtl.c as well. */
3935 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3936 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3938 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3939 basic_block bb
, rtx pattern
, int location
, int code
,
3941 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3942 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3943 extern void set_mode_and_regno (rtx
, machine_mode
, unsigned int);
3944 extern rtx
init_raw_REG (rtx
, machine_mode
, unsigned int);
3945 extern rtx
gen_raw_REG (machine_mode
, unsigned int);
3946 #define alloca_raw_REG(mode, regno) \
3947 init_raw_REG (rtx_alloca (REG), (mode), (regno))
3948 extern rtx
gen_rtx_REG (machine_mode
, unsigned int);
3949 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, poly_uint64
);
3950 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
3951 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
3952 enum var_init_status
);
3954 #ifdef GENERATOR_FILE
3955 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
3958 PUT_MODE (rtx x
, machine_mode mode
)
3961 set_mode_and_regno (x
, mode
, REGNO (x
));
3963 PUT_MODE_RAW (x
, mode
);
3967 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3969 /* Virtual registers are used during RTL generation to refer to locations into
3970 the stack frame when the actual location isn't known until RTL generation
3971 is complete. The routine instantiate_virtual_regs replaces these with
3972 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3975 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3977 /* This points to the first word of the incoming arguments passed on the stack,
3978 either by the caller or by the callee when pretending it was passed by the
3981 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3983 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3985 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3986 variable on the stack. Otherwise, it points to the first variable on
3989 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3991 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3993 /* This points to the location of dynamically-allocated memory on the stack
3994 immediately after the stack pointer has been adjusted by the amount
3997 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3999 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
4001 /* This points to the location in the stack at which outgoing arguments should
4002 be written when the stack is pre-pushed (arguments pushed using push
4003 insns always use sp). */
4005 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
4007 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
4009 /* This points to the Canonical Frame Address of the function. This
4010 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
4011 but is calculated relative to the arg pointer for simplicity; the
4012 frame pointer nor stack pointer are necessarily fixed relative to
4013 the CFA until after reload. */
4015 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
4017 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
4019 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
4021 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
4024 #define virtual_preferred_stack_boundary_rtx \
4025 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
4027 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
4028 ((FIRST_VIRTUAL_REGISTER) + 5)
4030 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
4032 /* Nonzero if REGNUM is a pointer into the stack frame. */
4033 #define REGNO_PTR_FRAME_P(REGNUM) \
4034 ((REGNUM) == STACK_POINTER_REGNUM \
4035 || (REGNUM) == FRAME_POINTER_REGNUM \
4036 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
4037 || (REGNUM) == ARG_POINTER_REGNUM \
4038 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
4039 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
4041 /* REGNUM never really appearing in the INSN stream. */
4042 #define INVALID_REGNUM (~(unsigned int) 0)
4044 /* REGNUM for which no debug information can be generated. */
4045 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
4047 extern rtx
output_constant_def (tree
, int);
4048 extern rtx
lookup_constant_def (tree
);
4050 /* Nonzero after end of reload pass.
4051 Set to 1 or 0 by reload1.c. */
4053 extern int reload_completed
;
4055 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
4056 extern int epilogue_completed
;
4058 /* Set to 1 while reload_as_needed is operating.
4059 Required by some machines to handle any generated moves differently. */
4061 extern int reload_in_progress
;
4063 /* Set to 1 while in lra. */
4064 extern int lra_in_progress
;
4066 /* This macro indicates whether you may create a new
4069 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
4072 /* Nonzero after end of regstack pass.
4073 Set to 1 or 0 by reg-stack.c. */
4074 extern int regstack_completed
;
4077 /* If this is nonzero, we do not bother generating VOLATILE
4078 around volatile memory references, and we are willing to
4079 output indirect addresses. If cse is to follow, we reject
4080 indirect addresses so a useful potential cse is generated;
4081 if it is used only once, instruction combination will produce
4082 the same indirect address eventually. */
4083 extern int cse_not_expected
;
4085 /* Translates rtx code to tree code, for those codes needed by
4086 real_arithmetic. The function returns an int because the caller may not
4087 know what `enum tree_code' means. */
4089 extern int rtx_to_tree_code (enum rtx_code
);
4092 extern int delete_trivially_dead_insns (rtx_insn
*, int);
4093 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
4094 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
4097 extern bool check_for_inc_dec (rtx_insn
*insn
);
4100 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
4101 extern bool jump_to_label_p (const rtx_insn
*);
4102 extern int condjump_p (const rtx_insn
*);
4103 extern int any_condjump_p (const rtx_insn
*);
4104 extern int any_uncondjump_p (const rtx_insn
*);
4105 extern rtx
pc_set (const rtx_insn
*);
4106 extern rtx
condjump_label (const rtx_insn
*);
4107 extern int simplejump_p (const rtx_insn
*);
4108 extern int returnjump_p (const rtx_insn
*);
4109 extern int eh_returnjump_p (rtx_insn
*);
4110 extern int onlyjump_p (const rtx_insn
*);
4111 extern int only_sets_cc0_p (const_rtx
);
4112 extern int sets_cc0_p (const_rtx
);
4113 extern int invert_jump_1 (rtx_jump_insn
*, rtx
);
4114 extern int invert_jump (rtx_jump_insn
*, rtx
, int);
4115 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
4116 extern int true_regnum (const_rtx
);
4117 extern unsigned int reg_or_subregno (const_rtx
);
4118 extern int redirect_jump_1 (rtx_insn
*, rtx
);
4119 extern void redirect_jump_2 (rtx_jump_insn
*, rtx
, rtx
, int, int);
4120 extern int redirect_jump (rtx_jump_insn
*, rtx
, int);
4121 extern void rebuild_jump_labels (rtx_insn
*);
4122 extern void rebuild_jump_labels_chain (rtx_insn
*);
4123 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
4124 extern enum rtx_code
reversed_comparison_code (const_rtx
, const rtx_insn
*);
4125 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
4126 const_rtx
, const rtx_insn
*);
4127 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
4128 extern int condjump_in_parallel_p (const rtx_insn
*);
4130 /* In emit-rtl.c. */
4131 extern int max_reg_num (void);
4132 extern int max_label_num (void);
4133 extern int get_first_label_num (void);
4134 extern void maybe_set_first_label_num (rtx_code_label
*);
4135 extern void delete_insns_since (rtx_insn
*);
4136 extern void mark_reg_pointer (rtx
, int);
4137 extern void mark_user_reg (rtx
);
4138 extern void reset_used_flags (rtx
);
4139 extern void set_used_flags (rtx
);
4140 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
4141 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
4142 extern int get_max_insn_count (void);
4143 extern int in_sequence_p (void);
4144 extern void init_emit (void);
4145 extern void init_emit_regs (void);
4146 extern void init_derived_machine_modes (void);
4147 extern void init_emit_once (void);
4148 extern void push_topmost_sequence (void);
4149 extern void pop_topmost_sequence (void);
4150 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
4151 extern unsigned int unshare_all_rtl (void);
4152 extern void unshare_all_rtl_again (rtx_insn
*);
4153 extern void unshare_all_rtl_in_chain (rtx_insn
*);
4154 extern void verify_rtl_sharing (void);
4155 extern void add_insn (rtx_insn
*);
4156 extern void add_insn_before (rtx_insn
*, rtx_insn
*, basic_block
);
4157 extern void add_insn_after (rtx_insn
*, rtx_insn
*, basic_block
);
4158 extern void remove_insn (rtx_insn
*);
4159 extern rtx_insn
*emit (rtx
, bool = true);
4160 extern void emit_insn_at_entry (rtx
);
4161 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
4162 extern rtx
gen_const_mem (machine_mode
, rtx
);
4163 extern rtx
gen_frame_mem (machine_mode
, rtx
);
4164 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
4165 extern bool validate_subreg (machine_mode
, machine_mode
,
4166 const_rtx
, poly_uint64
);
4169 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
4170 extern rtx
remove_death (unsigned int, rtx_insn
*);
4171 extern void dump_combine_stats (FILE *);
4172 extern void dump_combine_total_stats (FILE *);
4173 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
4175 /* In sched-rgn.c. */
4176 extern void schedule_insns (void);
4178 /* In sched-ebb.c. */
4179 extern void schedule_ebbs (void);
4181 /* In sel-sched-dump.c. */
4182 extern void sel_sched_fix_param (const char *param
, const char *val
);
4184 /* In print-rtl.c */
4185 extern const char *print_rtx_head
;
4186 extern void debug (const rtx_def
&ref
);
4187 extern void debug (const rtx_def
*ptr
);
4188 extern void debug_rtx (const_rtx
);
4189 extern void debug_rtx_list (const rtx_insn
*, int);
4190 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
4191 extern const rtx_insn
*debug_rtx_find (const rtx_insn
*, int);
4192 extern void print_mem_expr (FILE *, const_tree
);
4193 extern void print_rtl (FILE *, const_rtx
);
4194 extern void print_simple_rtl (FILE *, const_rtx
);
4195 extern int print_rtl_single (FILE *, const_rtx
);
4196 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
4197 extern void print_inline_rtx (FILE *, const_rtx
, int);
4200 extern void expand_null_return (void);
4201 extern void expand_naked_return (void);
4202 extern void emit_jump (rtx
);
4204 /* Memory operation built-ins differ by return value. Mapping
4205 of the enum values is following:
4206 - RETURN_BEGIN - return destination, e.g. memcpy
4207 - RETURN_END - return destination + n, e.g. mempcpy
4208 - RETURN_END_MINUS_ONE - return a pointer to the terminating
4209 null byte of the string, e.g. strcpy
4216 RETURN_END_MINUS_ONE
4220 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
4221 unsigned int, memop_ret
);
4222 extern poly_int64
find_args_size_adjust (rtx_insn
*);
4223 extern poly_int64
fixup_args_size_notes (rtx_insn
*, rtx_insn
*, poly_int64
);
4226 extern void init_expmed (void);
4227 extern void expand_inc (rtx
, rtx
);
4228 extern void expand_dec (rtx
, rtx
);
4230 /* In lower-subreg.c */
4231 extern void init_lower_subreg (void);
4234 extern bool can_copy_p (machine_mode
);
4235 extern bool can_assign_to_reg_without_clobbers_p (rtx
, machine_mode
);
4236 extern rtx_insn
*prepare_copy_insn (rtx
, rtx
);
4239 extern rtx
fis_get_condition (rtx_insn
*);
4242 extern HARD_REG_SET eliminable_regset
;
4243 extern void mark_elimination (int, int);
4246 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
4247 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
4248 extern void globalize_reg (tree
, int);
4249 extern void init_reg_modes_target (void);
4250 extern void init_regs (void);
4251 extern void reinit_regs (void);
4252 extern void init_fake_stack_mems (void);
4253 extern void save_register_info (void);
4254 extern void init_reg_sets (void);
4255 extern void regclass (rtx
, int);
4256 extern void reg_scan (rtx_insn
*, unsigned int);
4257 extern void fix_register (const char *, int, int);
4258 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
4261 extern int function_invariant_p (const_rtx
);
4271 LCT_RETURNS_TWICE
= 5
4274 extern rtx
emit_library_call_value_1 (int, rtx
, rtx
, enum libcall_type
,
4275 machine_mode
, int, rtx_mode_t
*);
4277 /* Output a library call and discard the returned value. FUN is the
4278 address of the function, as a SYMBOL_REF rtx, and OUTMODE is the mode
4279 of the (discarded) return value. FN_TYPE is LCT_NORMAL for `normal'
4280 calls, LCT_CONST for `const' calls, LCT_PURE for `pure' calls, or
4281 another LCT_ value for other types of library calls.
4283 There are different overloads of this function for different numbers
4284 of arguments. In each case the argument value is followed by its mode. */
4287 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
)
4289 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 0, NULL
);
4293 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4294 rtx arg1
, machine_mode arg1_mode
)
4296 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
4297 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 1, args
);
4301 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4302 rtx arg1
, machine_mode arg1_mode
,
4303 rtx arg2
, machine_mode arg2_mode
)
4305 rtx_mode_t args
[] = {
4306 rtx_mode_t (arg1
, arg1_mode
),
4307 rtx_mode_t (arg2
, arg2_mode
)
4309 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 2, args
);
4313 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4314 rtx arg1
, machine_mode arg1_mode
,
4315 rtx arg2
, machine_mode arg2_mode
,
4316 rtx arg3
, machine_mode arg3_mode
)
4318 rtx_mode_t args
[] = {
4319 rtx_mode_t (arg1
, arg1_mode
),
4320 rtx_mode_t (arg2
, arg2_mode
),
4321 rtx_mode_t (arg3
, arg3_mode
)
4323 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 3, args
);
4327 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4328 rtx arg1
, machine_mode arg1_mode
,
4329 rtx arg2
, machine_mode arg2_mode
,
4330 rtx arg3
, machine_mode arg3_mode
,
4331 rtx arg4
, machine_mode arg4_mode
)
4333 rtx_mode_t args
[] = {
4334 rtx_mode_t (arg1
, arg1_mode
),
4335 rtx_mode_t (arg2
, arg2_mode
),
4336 rtx_mode_t (arg3
, arg3_mode
),
4337 rtx_mode_t (arg4
, arg4_mode
)
4339 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 4, args
);
4342 /* Like emit_library_call, but return the value produced by the call.
4343 Use VALUE to store the result if it is nonnull, otherwise pick a
4344 convenient location. */
4347 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4348 machine_mode outmode
)
4350 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 0, NULL
);
4354 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4355 machine_mode outmode
,
4356 rtx arg1
, machine_mode arg1_mode
)
4358 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
4359 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 1, args
);
4363 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4364 machine_mode outmode
,
4365 rtx arg1
, machine_mode arg1_mode
,
4366 rtx arg2
, machine_mode arg2_mode
)
4368 rtx_mode_t args
[] = {
4369 rtx_mode_t (arg1
, arg1_mode
),
4370 rtx_mode_t (arg2
, arg2_mode
)
4372 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 2, args
);
4376 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4377 machine_mode outmode
,
4378 rtx arg1
, machine_mode arg1_mode
,
4379 rtx arg2
, machine_mode arg2_mode
,
4380 rtx arg3
, machine_mode arg3_mode
)
4382 rtx_mode_t args
[] = {
4383 rtx_mode_t (arg1
, arg1_mode
),
4384 rtx_mode_t (arg2
, arg2_mode
),
4385 rtx_mode_t (arg3
, arg3_mode
)
4387 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 3, args
);
4391 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4392 machine_mode outmode
,
4393 rtx arg1
, machine_mode arg1_mode
,
4394 rtx arg2
, machine_mode arg2_mode
,
4395 rtx arg3
, machine_mode arg3_mode
,
4396 rtx arg4
, machine_mode arg4_mode
)
4398 rtx_mode_t args
[] = {
4399 rtx_mode_t (arg1
, arg1_mode
),
4400 rtx_mode_t (arg2
, arg2_mode
),
4401 rtx_mode_t (arg3
, arg3_mode
),
4402 rtx_mode_t (arg4
, arg4_mode
)
4404 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 4, args
);
4408 extern void init_varasm_once (void);
4410 extern rtx
make_debug_expr_from_rtl (const_rtx
);
4413 #ifdef GENERATOR_FILE
4414 extern bool read_rtx (const char *, vec
<rtx
> *);
4418 extern rtx
canon_rtx (rtx
);
4419 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
4420 extern rtx
get_addr (rtx
);
4421 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
4423 extern int read_dependence (const_rtx
, const_rtx
);
4424 extern int anti_dependence (const_rtx
, const_rtx
);
4425 extern int canon_anti_dependence (const_rtx
, bool,
4426 const_rtx
, machine_mode
, rtx
);
4427 extern int output_dependence (const_rtx
, const_rtx
);
4428 extern int canon_output_dependence (const_rtx
, bool,
4429 const_rtx
, machine_mode
, rtx
);
4430 extern int may_alias_p (const_rtx
, const_rtx
);
4431 extern void init_alias_target (void);
4432 extern void init_alias_analysis (void);
4433 extern void end_alias_analysis (void);
4434 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
4435 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
4436 extern bool may_be_sp_based_p (rtx
);
4437 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
4438 extern rtx
get_reg_known_value (unsigned int);
4439 extern bool get_reg_known_equiv_p (unsigned int);
4440 extern rtx
get_reg_base_value (unsigned int);
4441 extern rtx
extract_mem_from_operand (rtx
);
4444 extern int stack_regs_mentioned (const_rtx insn
);
4448 extern GTY(()) rtx stack_limit_rtx
;
4450 /* In var-tracking.c */
4451 extern unsigned int variable_tracking_main (void);
4452 extern void delete_vta_debug_insns (bool);
4454 /* In stor-layout.c. */
4455 extern void get_mode_bounds (scalar_int_mode
, int,
4456 scalar_int_mode
, rtx
*, rtx
*);
4459 extern rtx
canon_condition (rtx
);
4460 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
4463 extern unsigned int compute_alignments (void);
4464 extern void update_alignments (vec
<rtx
> &);
4465 extern int asm_str_count (const char *templ
);
4469 rtx (*gen_lowpart
) (machine_mode
, rtx
);
4470 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
4471 rtx (*reg_nonzero_bits
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4472 unsigned HOST_WIDE_INT
*);
4473 rtx (*reg_num_sign_bit_copies
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4475 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
4477 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
4480 /* Each pass can provide its own. */
4481 extern struct rtl_hooks rtl_hooks
;
4483 /* ... but then it has to restore these. */
4484 extern const struct rtl_hooks general_rtl_hooks
;
4486 /* Keep this for the nonce. */
4487 #define gen_lowpart rtl_hooks.gen_lowpart
4489 extern void insn_locations_init (void);
4490 extern void insn_locations_finalize (void);
4491 extern void set_curr_insn_location (location_t
);
4492 extern location_t
curr_insn_location (void);
4493 extern void set_insn_locations (rtx_insn
*, location_t
);
4496 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
4497 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4498 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
4499 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4501 #define fatal_insn(msgid, insn) \
4502 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
4503 #define fatal_insn_not_found(insn) \
4504 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
4507 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
4509 /* Information about the function that is propagated by the RTL backend.
4510 Available only for functions that has been already assembled. */
4512 struct GTY(()) cgraph_rtl_info
{
4513 unsigned int preferred_incoming_stack_boundary
;
4515 /* Which registers the function clobbers, either directly or by
4516 calling another function. */
4517 HARD_REG_SET function_used_regs
;
4520 /* If loads from memories of mode MODE always sign or zero extend,
4521 return SIGN_EXTEND or ZERO_EXTEND as appropriate. Return UNKNOWN
4525 load_extend_op (machine_mode mode
)
4527 scalar_int_mode int_mode
;
4528 if (is_a
<scalar_int_mode
> (mode
, &int_mode
)
4529 && GET_MODE_PRECISION (int_mode
) < BITS_PER_WORD
)
4530 return LOAD_EXTEND_OP (int_mode
);
4534 /* If X is a PLUS of a base and a constant offset, add the constant to *OFFSET
4535 and return the base. Return X otherwise. */
4538 strip_offset_and_add (rtx x
, poly_int64_pod
*offset
)
4540 if (GET_CODE (x
) == PLUS
)
4542 poly_int64 suboffset
;
4543 x
= strip_offset (x
, &suboffset
);
4544 *offset
= poly_uint64 (*offset
) + suboffset
;
4549 /* Return true if X is an operation that always operates on the full
4550 registers for WORD_REGISTER_OPERATIONS architectures. */
4553 word_register_operation_p (const_rtx x
)
4555 switch (GET_CODE (x
))
4570 extern void gt_ggc_mx (rtx
&);
4571 extern void gt_pch_nx (rtx
&);
4572 extern void gt_pch_nx (rtx
&, gt_pointer_operator
, void *);
4574 #endif /* ! GCC_RTL_H */