1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2023 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 #define RTX_CODE_BITSIZE 8
68 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
71 /* We check bit 0-1 of some rtx class codes in the predicates below. */
73 /* Bit 0 = comparison if 0, arithmetic is 1
74 Bit 1 = 1 if commutative. */
80 /* Must follow the four preceding values. */
87 /* Bit 0 = 1 if constant. */
96 #define RTX_OBJ_MASK (~1)
97 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
98 #define RTX_COMPARE_MASK (~1)
99 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
100 #define RTX_ARITHMETIC_MASK (~1)
101 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
102 #define RTX_BINARY_MASK (~3)
103 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
104 #define RTX_COMMUTATIVE_MASK (~2)
105 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
106 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
108 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
109 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
111 extern const char * const rtx_name
[NUM_RTX_CODE
];
112 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
114 extern const char * const rtx_format
[NUM_RTX_CODE
];
115 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
117 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
118 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
120 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
121 and NEXT_INSN fields). */
122 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
124 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
125 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
127 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
128 relative to which the offsets are calculated, as explained in rtl.def. */
129 struct addr_diff_vec_flags
131 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
132 unsigned min_align
: 8;
134 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
135 unsigned min_after_vec
: 1; /* minimum address target label is
136 after the ADDR_DIFF_VEC. */
137 unsigned max_after_vec
: 1; /* maximum address target label is
138 after the ADDR_DIFF_VEC. */
139 unsigned min_after_base
: 1; /* minimum address target label is
141 unsigned max_after_base
: 1; /* maximum address target label is
143 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
144 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
149 /* Structure used to describe the attributes of a MEM. These are hashed
150 so MEMs that the same attributes share a data structure. This means
151 they cannot be modified in place. */
152 class GTY(()) mem_attrs
157 /* The expression that the MEM accesses, or null if not known.
158 This expression might be larger than the memory reference itself.
159 (In other words, the MEM might access only part of the object.) */
162 /* The offset of the memory reference from the start of EXPR.
163 Only valid if OFFSET_KNOWN_P. */
166 /* The size of the memory reference in bytes. Only valid if
170 /* The alias set of the memory reference. */
171 alias_set_type alias
;
173 /* The alignment of the reference in bits. Always a multiple of
174 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
175 than the memory reference itself. */
178 /* The address space that the memory reference uses. */
179 unsigned char addrspace
;
181 /* True if OFFSET is known. */
184 /* True if SIZE is known. */
188 /* Structure used to describe the attributes of a REG in similar way as
189 mem_attrs does for MEM above. Note that the OFFSET field is calculated
190 in the same way as for mem_attrs, rather than in the same way as a
191 SUBREG_BYTE. For example, if a big-endian target stores a byte
192 object in the low part of a 4-byte register, the OFFSET field
193 will be -3 rather than 0. */
195 class GTY((for_user
)) reg_attrs
{
197 tree decl
; /* decl corresponding to REG. */
198 poly_int64 offset
; /* Offset from start of DECL. */
201 /* Common union for an element of an rtx. */
206 unsigned int rt_uint
;
207 poly_uint16_pod rt_subreg
;
211 machine_mode rt_type
;
212 addr_diff_vec_flags rt_addr_diff_vec_flags
;
213 struct cselib_val
*rt_cselib
;
217 class constant_descriptor_rtx
*rt_constant
;
218 struct dw_cfi_node
*rt_cfi
;
221 /* Describes the properties of a REG. */
222 struct GTY(()) reg_info
{
223 /* The value of REGNO. */
226 /* The value of REG_NREGS. */
227 unsigned int nregs
: 8;
228 unsigned int unused
: 24;
230 /* The value of REG_ATTRS. */
234 /* This structure remembers the position of a SYMBOL_REF within an
235 object_block structure. A SYMBOL_REF only provides this information
236 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
237 struct GTY(()) block_symbol
{
238 /* The usual SYMBOL_REF fields. */
239 rtunion
GTY ((skip
)) fld
[2];
241 /* The block that contains this object. */
242 struct object_block
*block
;
244 /* The offset of this object from the start of its block. It is negative
245 if the symbol has not yet been assigned an offset. */
246 HOST_WIDE_INT offset
;
249 /* Describes a group of objects that are to be placed together in such
250 a way that their relative positions are known. */
251 struct GTY((for_user
)) object_block
{
252 /* The section in which these objects should be placed. */
255 /* The alignment of the first object, measured in bits. */
256 unsigned int alignment
;
258 /* The total size of the objects, measured in bytes. */
261 /* The SYMBOL_REFs for each object. The vector is sorted in
262 order of increasing offset and the following conditions will
263 hold for each element X:
265 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
266 !SYMBOL_REF_ANCHOR_P (X)
267 SYMBOL_REF_BLOCK (X) == [address of this structure]
268 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
269 vec
<rtx
, va_gc
> *objects
;
271 /* All the anchor SYMBOL_REFs used to address these objects, sorted
272 in order of increasing offset, and then increasing TLS model.
273 The following conditions will hold for each element X in this vector:
275 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
276 SYMBOL_REF_ANCHOR_P (X)
277 SYMBOL_REF_BLOCK (X) == [address of this structure]
278 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
279 vec
<rtx
, va_gc
> *anchors
;
282 struct GTY((variable_size
)) hwivec_def
{
283 HOST_WIDE_INT elem
[1];
286 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
287 #define CWI_GET_NUM_ELEM(RTX) \
288 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
289 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
290 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
292 struct GTY((variable_size
)) const_poly_int_def
{
293 trailing_wide_ints
<NUM_POLY_INT_COEFFS
> coeffs
;
296 /* RTL expression ("rtx"). */
298 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
299 field for gengtype to recognize that inheritance is occurring,
300 so that all subclasses are redirected to the traversal hook for the
302 However, all of the fields are in the base class, and special-casing
303 is at work. Hence we use desc and tag of 0, generating a switch
304 statement of the form:
307 case 0: // all the work happens here
309 in order to work with the existing special-casing in gengtype. */
311 struct GTY((desc("0"), tag("0"),
312 chain_next ("RTX_NEXT (&%h)"),
313 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
314 /* The kind of value the expression has. */
315 ENUM_BITFIELD(machine_mode
) mode
: MACHINE_MODE_BITSIZE
;
317 /* The kind of expression this is. */
318 ENUM_BITFIELD(rtx_code
) code
: RTX_CODE_BITSIZE
;
320 /* 1 in a MEM if we should keep the alias set for this mem unchanged
321 when we access a component.
322 1 in a JUMP_INSN if it is a crossing jump.
323 1 in a CALL_INSN if it is a sibling call.
324 1 in a SET that is for a return.
325 In a CODE_LABEL, part of the two-bit alternate entry field.
326 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.cc.
327 1 in a VALUE is SP_BASED_VALUE_P in cselib.cc.
328 1 in a SUBREG generated by LRA for reload insns.
329 1 in a REG if this is a static chain register.
330 Dumped as "/j" in RTL dumps. */
331 unsigned int jump
: 1;
332 /* In a CODE_LABEL, part of the two-bit alternate entry field.
333 1 in a MEM if it cannot trap.
334 1 in a CALL_INSN logically equivalent to
335 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P.
336 1 in a VALUE is SP_DERIVED_VALUE_P in cselib.cc.
337 Dumped as "/c" in RTL dumps. */
338 unsigned int call
: 1;
339 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
340 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
341 1 in a SYMBOL_REF if it addresses something in the per-function
343 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
344 1 in a NOTE, or EXPR_LIST for a const call.
345 1 in a JUMP_INSN of an annulling branch.
346 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.cc.
347 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.cc.
348 1 in a clobber temporarily created for LRA.
349 Dumped as "/u" in RTL dumps. */
350 unsigned int unchanging
: 1;
351 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
352 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
353 if it has been deleted.
354 1 in a REG expression if corresponds to a variable declared by the user,
355 0 for an internally generated temporary.
356 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
357 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
359 In a SYMBOL_REF, this flag is used for machine-specific purposes.
360 In a PREFETCH, this flag indicates that it should be considered a
362 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.cc.
363 Dumped as "/v" in RTL dumps. */
364 unsigned int volatil
: 1;
365 /* 1 in a REG if the register is used only in exit code a loop.
366 1 in a SUBREG expression if was generated from a variable with a
368 1 in a CODE_LABEL if the label is used for nonlocal gotos
369 and must not be deleted even if its count is zero.
370 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
371 together with the preceding insn. Valid only within sched.
372 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
373 from the target of a branch. Valid from reorg until end of compilation;
376 The name of the field is historical. It used to be used in MEMs
377 to record whether the MEM accessed part of a structure.
378 Dumped as "/s" in RTL dumps. */
379 unsigned int in_struct
: 1;
380 /* At the end of RTL generation, 1 if this rtx is used. This is used for
381 copying shared structure. See `unshare_all_rtl'.
382 In a REG, this is not needed for that purpose, and used instead
383 in `leaf_renumber_regs_insn'.
384 1 in a SYMBOL_REF, means that emit_library_call
385 has used it as the function.
386 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.cc.
387 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.cc. */
388 unsigned int used
: 1;
389 /* 1 in an INSN or a SET if this rtx is related to the call frame,
390 either changing how we compute the frame address or saving and
391 restoring registers in the prologue and epilogue.
392 1 in a REG or MEM if it is a pointer.
393 1 in a SYMBOL_REF if it addresses something in the per-function
394 constant string pool.
395 1 in a VALUE is VALUE_CHANGED in var-tracking.cc.
396 Dumped as "/f" in RTL dumps. */
397 unsigned frame_related
: 1;
398 /* 1 in a REG or PARALLEL that is the current function's return value.
399 1 in a SYMBOL_REF for a weak symbol.
400 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
401 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.cc.
402 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.cc.
403 Dumped as "/i" in RTL dumps. */
404 unsigned return_val
: 1;
407 /* The final union field is aligned to 64 bits on LP64 hosts,
408 giving a 32-bit gap after the fields above. We optimize the
409 layout for that case and use the gap for extra code-specific
412 /* The ORIGINAL_REGNO of a REG. */
413 unsigned int original_regno
;
415 /* The INSN_UID of an RTX_INSN-class code. */
418 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
419 unsigned int symbol_ref_flags
;
421 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
422 enum var_init_status var_location_status
;
424 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
425 HOST_WIDE_INTs in the hwivec_def. */
426 unsigned int num_elem
;
428 /* Information about a CONST_VECTOR. */
431 /* The value of CONST_VECTOR_NPATTERNS. */
432 unsigned int npatterns
: 16;
434 /* The value of CONST_VECTOR_NELTS_PER_PATTERN. */
435 unsigned int nelts_per_pattern
: 8;
437 /* For future expansion. */
438 unsigned int unused
: 8;
442 /* The first element of the operands of this rtx.
443 The number of operands and their types are controlled
444 by the `code' field, according to rtl.def. */
447 HOST_WIDE_INT hwint
[1];
449 struct block_symbol block_sym
;
450 struct real_value rv
;
451 struct fixed_value fv
;
452 struct hwivec_def hwiv
;
453 struct const_poly_int_def cpi
;
454 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
457 /* A node for constructing singly-linked lists of rtx. */
459 struct GTY(()) rtx_expr_list
: public rtx_def
462 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
465 /* Get next in list. */
466 rtx_expr_list
*next () const;
468 /* Get at the underlying rtx. */
469 rtx
element () const;
475 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
477 return rt
->code
== EXPR_LIST
;
480 struct GTY(()) rtx_insn_list
: public rtx_def
483 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
485 This is an instance of:
487 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
489 i.e. a node for constructing singly-linked lists of rtx_insn *, where
490 the list is "external" to the insn (as opposed to the doubly-linked
491 list embedded within rtx_insn itself). */
494 /* Get next in list. */
495 rtx_insn_list
*next () const;
497 /* Get at the underlying instruction. */
498 rtx_insn
*insn () const;
505 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
507 return rt
->code
== INSN_LIST
;
510 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
511 typically (but not always) of rtx_insn *, used in the late passes. */
513 struct GTY(()) rtx_sequence
: public rtx_def
516 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
519 /* Get number of elements in sequence. */
522 /* Get i-th element of the sequence. */
523 rtx
element (int index
) const;
525 /* Get i-th element of the sequence, with a checked cast to
527 rtx_insn
*insn (int index
) const;
533 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
535 return rt
->code
== SEQUENCE
;
541 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
543 return rt
->code
== SEQUENCE
;
546 struct GTY(()) rtx_insn
: public rtx_def
549 /* No extra fields, but adds the invariant:
553 || JUMP_TABLE_DATA_P (X)
557 i.e. that we must be able to use the following:
561 i.e. we have an rtx that has an INSN_UID field and can be part of
562 a linked list of insns.
565 /* Returns true if this insn has been deleted. */
567 bool deleted () const { return volatil
; }
569 /* Mark this insn as deleted. */
571 void set_deleted () { volatil
= true; }
573 /* Mark this insn as not deleted. */
575 void set_undeleted () { volatil
= false; }
578 /* Subclasses of rtx_insn. */
580 struct GTY(()) rtx_debug_insn
: public rtx_insn
582 /* No extra fields, but adds the invariant:
583 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
584 i.e. an annotation for tracking variable assignments.
586 This is an instance of:
587 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
591 struct GTY(()) rtx_nonjump_insn
: public rtx_insn
593 /* No extra fields, but adds the invariant:
594 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
595 i.e an instruction that cannot jump.
597 This is an instance of:
598 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
602 struct GTY(()) rtx_jump_insn
: public rtx_insn
605 /* No extra fields, but adds the invariant:
606 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
607 i.e. an instruction that can possibly jump.
609 This is an instance of:
610 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
613 /* Returns jump target of this instruction. The returned value is not
614 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
615 expression. Also, when the code label is marked "deleted", it is
616 replaced by a NOTE. In some cases the value is NULL_RTX. */
618 inline rtx
jump_label () const;
620 /* Returns jump target cast to rtx_code_label *. */
622 inline rtx_code_label
*jump_target () const;
624 /* Set jump target. */
626 inline void set_jump_target (rtx_code_label
*);
629 struct GTY(()) rtx_call_insn
: public rtx_insn
631 /* No extra fields, but adds the invariant:
632 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
633 i.e. an instruction that can possibly call a subroutine
634 but which will not change which instruction comes next
635 in the current function.
637 This is an instance of:
638 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
642 struct GTY(()) rtx_jump_table_data
: public rtx_insn
644 /* No extra fields, but adds the invariant:
645 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
646 i.e. a data for a jump table, considered an instruction for
649 This is an instance of:
650 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
653 /* This can be either:
655 (a) a table of absolute jumps, in which case PATTERN (this) is an
656 ADDR_VEC with arg 0 a vector of labels, or
658 (b) a table of relative jumps (e.g. for -fPIC), in which case
659 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
660 arg 1 the vector of labels.
662 This method gets the underlying vec. */
664 inline rtvec
get_labels () const;
665 inline scalar_int_mode
get_data_mode () const;
668 struct GTY(()) rtx_barrier
: public rtx_insn
670 /* No extra fields, but adds the invariant:
671 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
672 i.e. a marker that indicates that control will not flow through.
674 This is an instance of:
675 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
679 struct GTY(()) rtx_code_label
: public rtx_insn
681 /* No extra fields, but adds the invariant:
682 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
683 i.e. a label in the assembler.
685 This is an instance of:
686 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
690 struct GTY(()) rtx_note
: public rtx_insn
692 /* No extra fields, but adds the invariant:
693 NOTE_P(X) aka (GET_CODE (X) == NOTE)
694 i.e. a note about the corresponding source code.
696 This is an instance of:
697 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
701 /* The size in bytes of an rtx header (code, mode and flags). */
702 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
704 /* The size in bytes of an rtx with code CODE. */
705 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
707 #define NULL_RTX (rtx) 0
709 /* The "next" and "previous" RTX, relative to this one. */
711 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
712 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
714 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
716 #define RTX_PREV(X) ((INSN_P (X) \
718 || JUMP_TABLE_DATA_P (X) \
721 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
722 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
723 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
725 /* Define macros to access the `code' field of the rtx. */
727 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
728 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
730 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
731 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
733 /* RTL vector. These appear inside RTX's when there is a need
734 for a variable number of things. The principle use is inside
735 PARALLEL expressions. */
737 struct GTY(()) rtvec_def
{
738 int num_elem
; /* number of elements */
739 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
742 #define NULL_RTVEC (rtvec) 0
744 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
745 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
747 /* Predicate yielding nonzero iff X is an rtx for a register. */
748 #define REG_P(X) (GET_CODE (X) == REG)
750 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
751 #define MEM_P(X) (GET_CODE (X) == MEM)
753 #if TARGET_SUPPORTS_WIDE_INT
755 /* Match CONST_*s that can represent compile-time constant integers. */
756 #define CASE_CONST_SCALAR_INT \
760 /* Match CONST_*s for which pointer equality corresponds to value
762 #define CASE_CONST_UNIQUE \
764 case CONST_WIDE_INT: \
765 case CONST_POLY_INT: \
769 /* Match all CONST_* rtxes. */
770 #define CASE_CONST_ANY \
772 case CONST_WIDE_INT: \
773 case CONST_POLY_INT: \
780 /* Match CONST_*s that can represent compile-time constant integers. */
781 #define CASE_CONST_SCALAR_INT \
785 /* Match CONST_*s for which pointer equality corresponds to value
787 #define CASE_CONST_UNIQUE \
792 /* Match all CONST_* rtxes. */
793 #define CASE_CONST_ANY \
800 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
801 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
803 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
804 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
806 /* Predicate yielding nonzero iff X is an rtx for a polynomial constant
808 #define CONST_POLY_INT_P(X) \
809 (NUM_POLY_INT_COEFFS > 1 && GET_CODE (X) == CONST_POLY_INT)
811 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
812 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
814 /* Predicate yielding true iff X is an rtx for a double-int
815 or floating point constant. */
816 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
818 /* Predicate yielding true iff X is an rtx for a double-int. */
819 #define CONST_DOUBLE_AS_INT_P(X) \
820 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
822 /* Predicate yielding true iff X is an rtx for a integer const. */
823 #if TARGET_SUPPORTS_WIDE_INT
824 #define CONST_SCALAR_INT_P(X) \
825 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
827 #define CONST_SCALAR_INT_P(X) \
828 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
831 /* Predicate yielding true iff X is an rtx for a double-int. */
832 #define CONST_DOUBLE_AS_FLOAT_P(X) \
833 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
835 /* Predicate yielding nonzero iff X is an rtx for a constant vector. */
836 #define CONST_VECTOR_P(X) (GET_CODE (X) == CONST_VECTOR)
838 /* Predicate yielding nonzero iff X is a label insn. */
839 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
841 /* Predicate yielding nonzero iff X is a jump insn. */
842 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
844 /* Predicate yielding nonzero iff X is a call insn. */
845 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
847 /* 1 if RTX is a call_insn for a fake call.
848 CALL_INSN use "used" flag to indicate it's a fake call. */
849 #define FAKE_CALL_P(RTX) \
850 (RTL_FLAG_CHECK1 ("FAKE_CALL_P", (RTX), CALL_INSN)->used)
852 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
853 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
855 /* Predicate yielding nonzero iff X is a debug note/insn. */
856 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
858 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
859 #define NONDEBUG_INSN_P(X) (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))
861 /* Nonzero if DEBUG_MARKER_INSN_P may possibly hold. */
862 #define MAY_HAVE_DEBUG_MARKER_INSNS debug_nonbind_markers_p
863 /* Nonzero if DEBUG_BIND_INSN_P may possibly hold. */
864 #define MAY_HAVE_DEBUG_BIND_INSNS flag_var_tracking_assignments
865 /* Nonzero if DEBUG_INSN_P may possibly hold. */
866 #define MAY_HAVE_DEBUG_INSNS \
867 (MAY_HAVE_DEBUG_MARKER_INSNS || MAY_HAVE_DEBUG_BIND_INSNS)
869 /* Predicate yielding nonzero iff X is a real insn. */
870 #define INSN_P(X) (NONDEBUG_INSN_P (X) || DEBUG_INSN_P (X))
872 /* Predicate yielding nonzero iff X is a note insn. */
873 #define NOTE_P(X) (GET_CODE (X) == NOTE)
875 /* Predicate yielding nonzero iff X is a barrier insn. */
876 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
878 /* Predicate yielding nonzero iff X is a data for a jump table. */
879 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
881 /* Predicate yielding nonzero iff RTX is a subreg. */
882 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
884 /* Predicate yielding true iff RTX is a symbol ref. */
885 #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
890 is_a_helper
<rtx_insn
*>::test (rtx rt
)
894 || JUMP_TABLE_DATA_P (rt
)
902 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
906 || JUMP_TABLE_DATA_P (rt
)
914 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
916 return DEBUG_INSN_P (rt
);
922 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
924 return NONJUMP_INSN_P (rt
);
930 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
938 is_a_helper
<rtx_jump_insn
*>::test (rtx_insn
*insn
)
940 return JUMP_P (insn
);
946 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
954 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
956 return CALL_P (insn
);
962 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
964 return JUMP_TABLE_DATA_P (rt
);
970 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
972 return JUMP_TABLE_DATA_P (insn
);
978 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
980 return BARRIER_P (rt
);
986 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
994 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
996 return LABEL_P (insn
);
1002 is_a_helper
<rtx_note
*>::test (rtx rt
)
1010 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
1012 return NOTE_P (insn
);
1015 /* Predicate yielding nonzero iff X is a return or simple_return. */
1016 #define ANY_RETURN_P(X) \
1017 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
1019 /* 1 if X is a unary operator. */
1021 #define UNARY_P(X) \
1022 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
1024 /* 1 if X is a binary operator. */
1026 #define BINARY_P(X) \
1027 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
1029 /* 1 if X is an arithmetic operator. */
1031 #define ARITHMETIC_P(X) \
1032 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
1033 == RTX_ARITHMETIC_RESULT)
1035 /* 1 if X is an arithmetic operator. */
1037 #define COMMUTATIVE_ARITH_P(X) \
1038 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
1040 /* 1 if X is a commutative arithmetic operator or a comparison operator.
1041 These two are sometimes selected together because it is possible to
1042 swap the two operands. */
1044 #define SWAPPABLE_OPERANDS_P(X) \
1045 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
1046 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
1047 | (1 << RTX_COMPARE)))
1049 /* 1 if X is a non-commutative operator. */
1051 #define NON_COMMUTATIVE_P(X) \
1052 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1053 == RTX_NON_COMMUTATIVE_RESULT)
1055 /* 1 if X is a commutative operator on integers. */
1057 #define COMMUTATIVE_P(X) \
1058 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1059 == RTX_COMMUTATIVE_RESULT)
1061 /* 1 if X is a relational operator. */
1063 #define COMPARISON_P(X) \
1064 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1066 /* 1 if X is a constant value that is an integer. */
1068 #define CONSTANT_P(X) \
1069 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1071 /* 1 if X is a LABEL_REF. */
1072 #define LABEL_REF_P(X) \
1073 (GET_CODE (X) == LABEL_REF)
1075 /* 1 if X can be used to represent an object. */
1076 #define OBJECT_P(X) \
1077 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1079 /* General accessor macros for accessing the fields of an rtx. */
1081 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1082 /* The bit with a star outside the statement expr and an & inside is
1083 so that N can be evaluated only once. */
1084 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1085 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1086 const enum rtx_code _code = GET_CODE (_rtx); \
1087 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1088 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1090 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1091 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1093 &_rtx->u.fld[_n]; }))
1095 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1096 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1097 const enum rtx_code _code = GET_CODE (_rtx); \
1098 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1099 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1101 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1102 && GET_RTX_FORMAT (_code)[_n] != C2) \
1103 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1105 &_rtx->u.fld[_n]; }))
1107 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1108 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1109 if (GET_CODE (_rtx) != (C)) \
1110 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1112 &_rtx->u.fld[_n]; }))
1114 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1115 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1116 const enum rtx_code _code = GET_CODE (_rtx); \
1117 if (_code != (C1) && _code != (C2)) \
1118 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1120 &_rtx->u.fld[_n]; }))
1122 #define RTL_CHECKC3(RTX, N, C1, C2, C3) __extension__ \
1123 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1124 const enum rtx_code _code = GET_CODE (_rtx); \
1125 if (_code != (C1) && _code != (C2) && _code != (C3)) \
1126 rtl_check_failed_code3 (_rtx, (C1), (C2), (C3), __FILE__, \
1127 __LINE__, __FUNCTION__); \
1128 &_rtx->u.fld[_n]; }))
1130 #define RTVEC_ELT(RTVEC, I) __extension__ \
1131 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1132 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1133 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1135 &_rtvec->elem[_i]; }))
1137 #define XWINT(RTX, N) __extension__ \
1138 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1139 const enum rtx_code _code = GET_CODE (_rtx); \
1140 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1141 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1143 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1144 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1146 &_rtx->u.hwint[_n]; }))
1148 #define CWI_ELT(RTX, I) __extension__ \
1149 (*({ __typeof (RTX) const _cwi = (RTX); \
1150 int _max = CWI_GET_NUM_ELEM (_cwi); \
1151 const int _i = (I); \
1152 if (_i < 0 || _i >= _max) \
1153 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1155 &_cwi->u.hwiv.elem[_i]; }))
1157 #define XCWINT(RTX, N, C) __extension__ \
1158 (*({ __typeof (RTX) const _rtx = (RTX); \
1159 if (GET_CODE (_rtx) != (C)) \
1160 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1162 &_rtx->u.hwint[N]; }))
1164 #define XCMWINT(RTX, N, C, M) __extension__ \
1165 (*({ __typeof (RTX) const _rtx = (RTX); \
1166 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1167 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1168 __LINE__, __FUNCTION__); \
1169 &_rtx->u.hwint[N]; }))
1171 #define XCNMPRV(RTX, C, M) __extension__ \
1172 ({ __typeof (RTX) const _rtx = (RTX); \
1173 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1174 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1175 __LINE__, __FUNCTION__); \
1178 #define XCNMPFV(RTX, C, M) __extension__ \
1179 ({ __typeof (RTX) const _rtx = (RTX); \
1180 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1181 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1182 __LINE__, __FUNCTION__); \
1185 #define REG_CHECK(RTX) __extension__ \
1186 ({ __typeof (RTX) const _rtx = (RTX); \
1187 if (GET_CODE (_rtx) != REG) \
1188 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1192 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1193 ({ __typeof (RTX) const _symbol = (RTX); \
1194 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1195 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1196 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1198 &_symbol->u.block_sym; })
1200 #define HWIVEC_CHECK(RTX,C) __extension__ \
1201 ({ __typeof (RTX) const _symbol = (RTX); \
1202 RTL_CHECKC1 (_symbol, 0, C); \
1203 &_symbol->u.hwiv; })
1205 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1207 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1208 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1210 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1211 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1213 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1214 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1216 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1217 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1218 const char *, int, const char *)
1219 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1220 extern void rtl_check_failed_code3 (const_rtx
, enum rtx_code
, enum rtx_code
,
1221 enum rtx_code
, const char *, int,
1223 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1224 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1225 bool, const char *, int, const char *)
1226 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1227 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1228 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1229 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1231 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1232 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1234 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1236 #else /* not ENABLE_RTL_CHECKING */
1238 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1239 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1240 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1241 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1242 #define RTL_CHECKC3(RTX, N, C1, C2, C3) ((RTX)->u.fld[N])
1243 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1244 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1245 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1246 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1247 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1248 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1249 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1250 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1251 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1252 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1253 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1257 /* General accessor macros for accessing the flags of an rtx. */
1259 /* Access an individual rtx flag, with no checking of any kind. */
1260 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1262 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1263 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1264 ({ __typeof (RTX) const _rtx = (RTX); \
1265 if (GET_CODE (_rtx) != C1) \
1266 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1270 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1271 ({ __typeof (RTX) const _rtx = (RTX); \
1272 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1273 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1277 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1278 ({ __typeof (RTX) const _rtx = (RTX); \
1279 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1280 && GET_CODE (_rtx) != C3) \
1281 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1285 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1286 ({ __typeof (RTX) const _rtx = (RTX); \
1287 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1288 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1289 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1293 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
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) \
1298 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1302 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
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 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1312 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1314 ({ __typeof (RTX) const _rtx = (RTX); \
1315 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1316 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1317 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1318 && GET_CODE (_rtx) != C7) \
1319 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1323 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1325 ({ __typeof (RTX) const _rtx = (RTX); \
1326 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1327 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1331 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1333 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
1336 #else /* not ENABLE_RTL_FLAG_CHECKING */
1338 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1339 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1340 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1341 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1342 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1343 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1344 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1345 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1348 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1349 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1350 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1351 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1352 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1353 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1354 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1355 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1356 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1357 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1359 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1360 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1362 /* These are like XINT, etc. except that they expect a '0' field instead
1363 of the normal type code. */
1365 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1366 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1367 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1368 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1369 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1370 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1371 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1372 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1373 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1374 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1375 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1376 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1378 /* Access a '0' field with any type. */
1379 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1381 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1382 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1383 #define XCSUBREG(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_subreg)
1384 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1385 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1386 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1387 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1388 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1389 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1390 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1391 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1393 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1394 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1396 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1397 #define XC3EXP(RTX, N, C1, C2, C3) (RTL_CHECKC3 (RTX, N, C1, C2, C3).rt_rtx)
1400 /* Methods of rtx_expr_list. */
1402 inline rtx_expr_list
*rtx_expr_list::next () const
1404 rtx tmp
= XEXP (this, 1);
1405 return safe_as_a
<rtx_expr_list
*> (tmp
);
1408 inline rtx
rtx_expr_list::element () const
1410 return XEXP (this, 0);
1413 /* Methods of rtx_insn_list. */
1415 inline rtx_insn_list
*rtx_insn_list::next () const
1417 rtx tmp
= XEXP (this, 1);
1418 return safe_as_a
<rtx_insn_list
*> (tmp
);
1421 inline rtx_insn
*rtx_insn_list::insn () const
1423 rtx tmp
= XEXP (this, 0);
1424 return safe_as_a
<rtx_insn
*> (tmp
);
1427 /* Methods of rtx_sequence. */
1429 inline int rtx_sequence::len () const
1431 return XVECLEN (this, 0);
1434 inline rtx
rtx_sequence::element (int index
) const
1436 return XVECEXP (this, 0, index
);
1439 inline rtx_insn
*rtx_sequence::insn (int index
) const
1441 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1444 /* ACCESS MACROS for particular fields of insns. */
1446 /* Holds a unique number for each insn.
1447 These are not necessarily sequentially increasing. */
1448 inline int INSN_UID (const_rtx insn
)
1450 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1451 (insn
))->u2
.insn_uid
;
1453 inline int& INSN_UID (rtx insn
)
1455 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1456 (insn
))->u2
.insn_uid
;
1459 /* Chain insns together in sequence. */
1461 /* For now these are split in two: an rvalue form:
1464 SET_NEXT_INSN/SET_PREV_INSN. */
1466 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1468 rtx prev
= XEXP (insn
, 0);
1469 return safe_as_a
<rtx_insn
*> (prev
);
1472 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1474 return XEXP (insn
, 0);
1477 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1479 rtx next
= XEXP (insn
, 1);
1480 return safe_as_a
<rtx_insn
*> (next
);
1483 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1485 return XEXP (insn
, 1);
1488 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1490 return XBBDEF (insn
, 2);
1493 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1495 return XBBDEF (insn
, 2);
1498 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1500 BLOCK_FOR_INSN (insn
) = bb
;
1503 /* The body of an insn. */
1504 inline rtx
PATTERN (const_rtx insn
)
1506 return XEXP (insn
, 3);
1509 inline rtx
& PATTERN (rtx insn
)
1511 return XEXP (insn
, 3);
1514 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1516 return XUINT (insn
, 4);
1519 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1521 return XUINT (insn
, 4);
1524 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1526 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1529 /* LOCATION of an RTX if relevant. */
1530 #define RTL_LOCATION(X) (INSN_P (X) ? \
1531 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1534 /* Code number of instruction, from when it was recognized.
1535 -1 means this instruction has not been recognized yet. */
1536 #define INSN_CODE(INSN) XINT (INSN, 5)
1538 inline rtvec
rtx_jump_table_data::get_labels () const
1540 rtx pat
= PATTERN (this);
1541 if (GET_CODE (pat
) == ADDR_VEC
)
1542 return XVEC (pat
, 0);
1544 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1547 /* Return the mode of the data in the table, which is always a scalar
1550 inline scalar_int_mode
1551 rtx_jump_table_data::get_data_mode () const
1553 return as_a
<scalar_int_mode
> (GET_MODE (PATTERN (this)));
1556 /* If LABEL is followed by a jump table, return the table, otherwise
1559 inline rtx_jump_table_data
*
1560 jump_table_for_label (const rtx_code_label
*label
)
1562 return safe_dyn_cast
<rtx_jump_table_data
*> (NEXT_INSN (label
));
1565 #define RTX_FRAME_RELATED_P(RTX) \
1566 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1567 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1569 /* 1 if JUMP RTX is a crossing jump. */
1570 #define CROSSING_JUMP_P(RTX) \
1571 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1573 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1575 #define RTL_CONST_CALL_P(RTX) \
1576 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1578 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1580 #define RTL_PURE_CALL_P(RTX) \
1581 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1583 /* 1 if RTX is a call to a const or pure function. */
1584 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1585 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1587 /* 1 if RTX is a call to a looping const or pure function. Built from
1588 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1589 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1590 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1592 /* 1 if RTX is a call_insn for a sibling call. */
1593 #define SIBLING_CALL_P(RTX) \
1594 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1596 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1597 #define INSN_ANNULLED_BRANCH_P(RTX) \
1598 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1600 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1601 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1602 executed if the branch is taken. For annulled branches with this bit
1603 clear, the insn should be executed only if the branch is not taken. */
1604 #define INSN_FROM_TARGET_P(RTX) \
1605 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1606 CALL_INSN)->in_struct)
1608 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1609 See the comments for ADDR_DIFF_VEC in rtl.def. */
1610 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1612 /* In a VALUE, the value cselib has assigned to RTX.
1613 This is a "struct cselib_val", see cselib.h. */
1614 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1616 /* Holds a list of notes on what this insn does to various REGs.
1617 It is a chain of EXPR_LIST rtx's, where the second operand is the
1618 chain pointer and the first operand is the REG being described.
1619 The mode field of the EXPR_LIST contains not a real machine mode
1620 but a value from enum reg_note. */
1621 #define REG_NOTES(INSN) XEXP(INSN, 6)
1623 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1625 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1629 #define DEF_REG_NOTE(NAME) NAME,
1630 #include "reg-notes.def"
1635 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1636 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1637 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1638 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1640 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1642 extern const char * const reg_note_name
[];
1643 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1645 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1646 USE, CLOBBER and SET expressions.
1647 USE expressions list the registers filled with arguments that
1648 are passed to the function.
1649 CLOBBER expressions document the registers explicitly clobbered
1651 SET expressions say that the return value of the call (the SET_DEST)
1652 is equivalent to a value available before the call (the SET_SRC).
1653 This kind of SET is used when the return value is predictable in
1654 advance. It is purely an optimisation hint; unlike USEs and CLOBBERs,
1655 it does not affect register liveness.
1657 Pseudo registers cannot be mentioned in this list. */
1658 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1660 /* The label-number of a code-label. The assembler label
1661 is made from `L' and the label-number printed in decimal.
1662 Label numbers are unique in a compilation. */
1663 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1665 /* In a NOTE that is a line number, this is a string for the file name that the
1666 line is in. We use the same field to record block numbers temporarily in
1667 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1668 between ints and pointers if we use a different macro for the block number.)
1672 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1673 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1674 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1675 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1676 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1677 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1678 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1679 #define NOTE_MARKER_LOCATION(INSN) XCUINT (INSN, 3, NOTE)
1680 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1681 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1683 /* In a NOTE that is a line number, this is the line number.
1684 Other kinds of NOTEs are identified by negative numbers here. */
1685 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1687 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1688 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1689 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1691 /* Nonzero if INSN is a debug nonbind marker note,
1692 for which NOTE_MARKER_LOCATION can be used. */
1693 #define NOTE_MARKER_P(INSN) \
1695 (NOTE_KIND (INSN) == NOTE_INSN_BEGIN_STMT \
1696 || NOTE_KIND (INSN) == NOTE_INSN_INLINE_ENTRY))
1698 /* Variable declaration and the location of a variable. */
1699 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1700 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1702 /* Initialization status of the variable in the location. Status
1703 can be unknown, uninitialized or initialized. See enumeration
1705 #define PAT_VAR_LOCATION_STATUS(PAT) \
1706 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1707 ->u2.var_location_status)
1709 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1710 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1711 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1712 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1713 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1714 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1715 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1717 /* Evaluate to TRUE if INSN is a debug insn that denotes a variable
1718 location/value tracking annotation. */
1719 #define DEBUG_BIND_INSN_P(INSN) \
1720 (DEBUG_INSN_P (INSN) \
1721 && (GET_CODE (PATTERN (INSN)) \
1723 /* Evaluate to TRUE if INSN is a debug insn that denotes a program
1724 source location marker. */
1725 #define DEBUG_MARKER_INSN_P(INSN) \
1726 (DEBUG_INSN_P (INSN) \
1727 && (GET_CODE (PATTERN (INSN)) \
1729 /* Evaluate to the marker kind. */
1730 #define INSN_DEBUG_MARKER_KIND(INSN) \
1731 (GET_CODE (PATTERN (INSN)) == DEBUG_MARKER \
1732 ? (GET_MODE (PATTERN (INSN)) == VOIDmode \
1733 ? NOTE_INSN_BEGIN_STMT \
1734 : GET_MODE (PATTERN (INSN)) == BLKmode \
1735 ? NOTE_INSN_INLINE_ENTRY \
1736 : (enum insn_note)-1) \
1737 : (enum insn_note)-1)
1738 /* Create patterns for debug markers. These and the above abstract
1739 the representation, so that it's easier to get rid of the abuse of
1740 the mode to hold the marker kind. Other marker types are
1741 envisioned, so a single bit flag won't do; maybe separate RTL codes
1742 wouldn't be a problem. */
1743 #define GEN_RTX_DEBUG_MARKER_BEGIN_STMT_PAT() \
1744 gen_rtx_DEBUG_MARKER (VOIDmode)
1745 #define GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT() \
1746 gen_rtx_DEBUG_MARKER (BLKmode)
1748 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1749 #define INSN_VAR_LOCATION(INSN) \
1750 (RTL_FLAG_CHECK1 ("INSN_VAR_LOCATION", PATTERN (INSN), VAR_LOCATION))
1751 /* A pointer to the VAR_LOCATION rtx in a DEBUG_INSN. */
1752 #define INSN_VAR_LOCATION_PTR(INSN) \
1755 /* Accessors for a tree-expanded var location debug insn. */
1756 #define INSN_VAR_LOCATION_DECL(INSN) \
1757 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1758 #define INSN_VAR_LOCATION_LOC(INSN) \
1759 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1760 #define INSN_VAR_LOCATION_STATUS(INSN) \
1761 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1763 /* Expand to the RTL that denotes an unknown variable location in a
1765 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1767 /* Determine whether X is such an unknown location. */
1768 #define VAR_LOC_UNKNOWN_P(X) \
1769 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1771 /* 1 if RTX is emitted after a call, but it should take effect before
1772 the call returns. */
1773 #define NOTE_DURING_CALL_P(RTX) \
1774 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1776 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1777 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1779 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1780 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1782 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1783 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1785 /* Codes that appear in the NOTE_KIND field for kinds of notes
1786 that are not line numbers. These codes are all negative.
1788 Notice that we do not try to use zero here for any of
1789 the special note codes because sometimes the source line
1790 actually can be zero! This happens (for example) when we
1791 are generating code for the per-translation-unit constructor
1792 and destructor routines for some C++ translation unit. */
1796 #define DEF_INSN_NOTE(NAME) NAME,
1797 #include "insn-notes.def"
1798 #undef DEF_INSN_NOTE
1803 /* Names for NOTE insn's other than line numbers. */
1805 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1806 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1807 (note_insn_name[(NOTE_CODE)])
1809 /* The name of a label, in case it corresponds to an explicit label
1810 in the input source code. */
1811 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1813 /* In jump.cc, each label contains a count of the number
1814 of LABEL_REFs that point at it, so unused labels can be deleted. */
1815 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1817 /* Labels carry a two-bit field composed of the ->jump and ->call
1818 bits. This field indicates whether the label is an alternate
1819 entry point, and if so, what kind. */
1822 LABEL_NORMAL
= 0, /* ordinary label */
1823 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1824 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1825 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1828 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1830 /* Retrieve the kind of LABEL. */
1831 #define LABEL_KIND(LABEL) __extension__ \
1832 ({ __typeof (LABEL) const _label = (LABEL); \
1833 if (! LABEL_P (_label)) \
1834 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1836 (enum label_kind) ((_label->jump << 1) | _label->call); })
1838 /* Set the kind of LABEL. */
1839 #define SET_LABEL_KIND(LABEL, KIND) do { \
1840 __typeof (LABEL) const _label = (LABEL); \
1841 const unsigned int _kind = (KIND); \
1842 if (! LABEL_P (_label)) \
1843 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1845 _label->jump = ((_kind >> 1) & 1); \
1846 _label->call = (_kind & 1); \
1851 /* Retrieve the kind of LABEL. */
1852 #define LABEL_KIND(LABEL) \
1853 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1855 /* Set the kind of LABEL. */
1856 #define SET_LABEL_KIND(LABEL, KIND) do { \
1857 rtx const _label = (LABEL); \
1858 const unsigned int _kind = (KIND); \
1859 _label->jump = ((_kind >> 1) & 1); \
1860 _label->call = (_kind & 1); \
1863 #endif /* rtl flag checking */
1865 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1867 /* In jump.cc, each JUMP_INSN can point to a label that it can jump to,
1868 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1869 be decremented and possibly the label can be deleted. */
1870 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1872 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1874 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1877 /* Methods of rtx_jump_insn. */
1879 inline rtx
rtx_jump_insn::jump_label () const
1881 return JUMP_LABEL (this);
1884 inline rtx_code_label
*rtx_jump_insn::jump_target () const
1886 return safe_as_a
<rtx_code_label
*> (JUMP_LABEL (this));
1889 inline void rtx_jump_insn::set_jump_target (rtx_code_label
*target
)
1891 JUMP_LABEL (this) = target
;
1894 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1895 goes through all the LABEL_REFs that jump to that label. The chain
1896 eventually winds up at the CODE_LABEL: it is circular. */
1897 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1899 /* Get the label that a LABEL_REF references. */
1901 label_ref_label (const_rtx ref
)
1903 return as_a
<rtx_insn
*> (XCEXP (ref
, 0, LABEL_REF
));
1906 /* Set the label that LABEL_REF ref refers to. */
1909 set_label_ref_label (rtx ref
, rtx_insn
*label
)
1911 XCEXP (ref
, 0, LABEL_REF
) = label
;
1914 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1915 be used on RHS. Use SET_REGNO to change the value. */
1916 #define REGNO(RTX) (rhs_regno(RTX))
1917 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1919 /* Return the number of consecutive registers in a REG. This is always
1920 1 for pseudo registers and is determined by TARGET_HARD_REGNO_NREGS for
1922 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1924 /* ORIGINAL_REGNO holds the number the register originally had; for a
1925 pseudo register turned into a hard reg this will hold the old pseudo
1927 #define ORIGINAL_REGNO(RTX) \
1928 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1930 /* Force the REGNO macro to only be used on the lhs. */
1932 rhs_regno (const_rtx x
)
1934 return REG_CHECK (x
)->regno
;
1937 /* Return the final register in REG X plus one. */
1939 END_REGNO (const_rtx x
)
1941 return REGNO (x
) + REG_NREGS (x
);
1944 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1945 bypassing the df machinery. */
1947 set_regno_raw (rtx x
, unsigned int regno
, unsigned int nregs
)
1949 reg_info
*reg
= REG_CHECK (x
);
1954 /* 1 if RTX is a reg or parallel that is the current function's return
1956 #define REG_FUNCTION_VALUE_P(RTX) \
1957 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1959 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1960 #define REG_USERVAR_P(RTX) \
1961 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1963 /* 1 if RTX is a reg that holds a pointer value. */
1964 #define REG_POINTER(RTX) \
1965 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1967 /* 1 if RTX is a mem that holds a pointer value. */
1968 #define MEM_POINTER(RTX) \
1969 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1971 /* 1 if the given register REG corresponds to a hard register. */
1972 #define HARD_REGISTER_P(REG) HARD_REGISTER_NUM_P (REGNO (REG))
1974 /* 1 if the given register number REG_NO corresponds to a hard register. */
1975 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1977 /* 1 if the given register REG corresponds to a virtual register. */
1978 #define VIRTUAL_REGISTER_P(REG) VIRTUAL_REGISTER_NUM_P (REGNO (REG))
1980 /* 1 if the given register number REG_NO corresponds to a virtual register. */
1981 #define VIRTUAL_REGISTER_NUM_P(REG_NO) \
1982 IN_RANGE (REG_NO, FIRST_VIRTUAL_REGISTER, LAST_VIRTUAL_REGISTER)
1984 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1985 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1986 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1988 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1989 elements actually needed to represent the constant.
1990 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1991 significant HOST_WIDE_INT. */
1992 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1993 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1994 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1996 /* For a CONST_POLY_INT, CONST_POLY_INT_COEFFS gives access to the
1997 individual coefficients, in the form of a trailing_wide_ints structure. */
1998 #define CONST_POLY_INT_COEFFS(RTX) \
1999 (RTL_FLAG_CHECK1("CONST_POLY_INT_COEFFS", (RTX), \
2000 CONST_POLY_INT)->u.cpi.coeffs)
2002 /* For a CONST_DOUBLE:
2003 #if TARGET_SUPPORTS_WIDE_INT == 0
2004 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
2005 low-order word and ..._HIGH the high-order.
2007 For a float, there is a REAL_VALUE_TYPE structure, and
2008 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
2009 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
2010 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
2011 #define CONST_DOUBLE_REAL_VALUE(r) \
2012 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
2014 #define CONST_FIXED_VALUE(r) \
2015 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
2016 #define CONST_FIXED_VALUE_HIGH(r) \
2017 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
2018 #define CONST_FIXED_VALUE_LOW(r) \
2019 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
2021 /* For a CONST_VECTOR, return element #n. */
2022 #define CONST_VECTOR_ELT(RTX, N) const_vector_elt (RTX, N)
2024 /* See rtl.texi for a description of these macros. */
2025 #define CONST_VECTOR_NPATTERNS(RTX) \
2026 (RTL_FLAG_CHECK1 ("CONST_VECTOR_NPATTERNS", (RTX), CONST_VECTOR) \
2027 ->u2.const_vector.npatterns)
2029 #define CONST_VECTOR_NELTS_PER_PATTERN(RTX) \
2030 (RTL_FLAG_CHECK1 ("CONST_VECTOR_NELTS_PER_PATTERN", (RTX), CONST_VECTOR) \
2031 ->u2.const_vector.nelts_per_pattern)
2033 #define CONST_VECTOR_DUPLICATE_P(RTX) \
2034 (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 1)
2036 #define CONST_VECTOR_STEPPED_P(RTX) \
2037 (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 3)
2039 #define CONST_VECTOR_ENCODED_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
2041 /* Return the number of elements encoded directly in a CONST_VECTOR. */
2044 const_vector_encoded_nelts (const_rtx x
)
2046 return CONST_VECTOR_NPATTERNS (x
) * CONST_VECTOR_NELTS_PER_PATTERN (x
);
2049 /* For a CONST_VECTOR, return the number of elements in a vector. */
2050 #define CONST_VECTOR_NUNITS(RTX) GET_MODE_NUNITS (GET_MODE (RTX))
2052 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
2053 SUBREG_BYTE extracts the byte-number. */
2055 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
2056 #define SUBREG_BYTE(RTX) XCSUBREG (RTX, 1, SUBREG)
2059 /* Return the right cost to give to an operation
2060 to make the cost of the corresponding register-to-register instruction
2061 N times that of a fast register-to-register instruction. */
2062 #define COSTS_N_INSNS(N) ((N) * 4)
2064 /* Maximum cost of an rtl expression. This value has the special meaning
2065 not to use an rtx with this cost under any circumstances. */
2066 #define MAX_COST INT_MAX
2068 /* Return true if CODE always has VOIDmode. */
2071 always_void_p (enum rtx_code code
)
2076 /* A structure to hold all available cost information about an rtl
2078 struct full_rtx_costs
2084 /* Initialize a full_rtx_costs structure C to the maximum cost. */
2086 init_costs_to_max (struct full_rtx_costs
*c
)
2088 c
->speed
= MAX_COST
;
2092 /* Initialize a full_rtx_costs structure C to zero cost. */
2094 init_costs_to_zero (struct full_rtx_costs
*c
)
2100 /* Compare two full_rtx_costs structures A and B, returning true
2101 if A < B when optimizing for speed. */
2103 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
2107 return (a
->speed
< b
->speed
2108 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
2110 return (a
->size
< b
->size
2111 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
2114 /* Increase both members of the full_rtx_costs structure C by the
2117 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
2119 c
->speed
+= COSTS_N_INSNS (n
);
2120 c
->size
+= COSTS_N_INSNS (n
);
2123 /* Describes the shape of a subreg:
2125 inner_mode == the mode of the SUBREG_REG
2126 offset == the SUBREG_BYTE
2127 outer_mode == the mode of the SUBREG itself. */
2128 class subreg_shape
{
2130 subreg_shape (machine_mode
, poly_uint16
, machine_mode
);
2131 bool operator == (const subreg_shape
&) const;
2132 bool operator != (const subreg_shape
&) const;
2133 unsigned HOST_WIDE_INT
unique_id () const;
2135 machine_mode inner_mode
;
2137 machine_mode outer_mode
;
2141 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
2142 poly_uint16 offset_in
,
2143 machine_mode outer_mode_in
)
2144 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
2148 subreg_shape::operator == (const subreg_shape
&other
) const
2150 return (inner_mode
== other
.inner_mode
2151 && known_eq (offset
, other
.offset
)
2152 && outer_mode
== other
.outer_mode
);
2156 subreg_shape::operator != (const subreg_shape
&other
) const
2158 return !operator == (other
);
2161 /* Return an integer that uniquely identifies this shape. Structures
2162 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
2163 current mode is anywhere near being 65536 bytes in size, so the
2164 id comfortably fits in an int. */
2166 inline unsigned HOST_WIDE_INT
2167 subreg_shape::unique_id () const
2169 { STATIC_ASSERT (MAX_MACHINE_MODE
<= (1 << MACHINE_MODE_BITSIZE
)); }
2170 { STATIC_ASSERT (NUM_POLY_INT_COEFFS
<= 3); }
2171 { STATIC_ASSERT (sizeof (offset
.coeffs
[0]) <= 2); }
2172 int res
= (int) inner_mode
+ ((int) outer_mode
<< 8);
2173 for (int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2174 res
+= (HOST_WIDE_INT
) offset
.coeffs
[i
] << ((1 + i
) * 16);
2178 /* Return the shape of a SUBREG rtx. */
2181 shape_of_subreg (const_rtx x
)
2183 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
2184 SUBREG_BYTE (x
), GET_MODE (x
));
2187 /* Information about an address. This structure is supposed to be able
2188 to represent all supported target addresses. Please extend it if it
2189 is not yet general enough. */
2190 struct address_info
{
2191 /* The mode of the value being addressed, or VOIDmode if this is
2192 a load-address operation with no known address mode. */
2195 /* The address space. */
2198 /* True if this is an RTX_AUTOINC address. */
2201 /* A pointer to the top-level address. */
2204 /* A pointer to the inner address, after all address mutations
2205 have been stripped from the top-level address. It can be one
2208 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2210 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2211 points to the step value, depending on whether the step is variable
2212 or constant respectively. SEGMENT is null.
2214 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2215 with null fields evaluating to 0. */
2218 /* Components that make up *INNER. Each one may be null or nonnull.
2219 When nonnull, their meanings are as follows:
2221 - *SEGMENT is the "segment" of memory to which the address refers.
2222 This value is entirely target-specific and is only called a "segment"
2223 because that's its most typical use. It contains exactly one UNSPEC,
2224 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2227 - *BASE is a variable expression representing a base address.
2228 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2230 - *INDEX is a variable expression representing an index value.
2231 It may be a scaled expression, such as a MULT. It has exactly
2232 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2234 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2235 unmutated RTX_CONST_OBJ. */
2246 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2247 of BASE_TERM, otherwise it is null. */
2250 /* ADDRESS if this structure describes an address operand, MEM if
2251 it describes a MEM address. */
2252 enum rtx_code addr_outer_code
;
2254 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2255 enum rtx_code base_outer_code
;
2258 /* This is used to bundle an rtx and a mode together so that the pair
2259 can be used with the wi:: routines. If we ever put modes into rtx
2260 integer constants, this should go away and then just pass an rtx in. */
2261 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
2266 struct int_traits
<rtx_mode_t
>
2268 static const enum precision_type precision_type
= VAR_PRECISION
;
2269 static const bool host_dependent_precision
= false;
2270 /* This ought to be true, except for the special case that BImode
2271 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2272 static const bool is_sign_extended
= false;
2273 static unsigned int get_precision (const rtx_mode_t
&);
2274 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
2275 const rtx_mode_t
&);
2280 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
2282 return GET_MODE_PRECISION (as_a
<scalar_mode
> (x
.second
));
2285 inline wi::storage_ref
2286 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
2287 unsigned int precision
,
2288 const rtx_mode_t
&x
)
2290 gcc_checking_assert (precision
== get_precision (x
));
2291 switch (GET_CODE (x
.first
))
2294 if (precision
< HOST_BITS_PER_WIDE_INT
)
2295 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2296 targets is 1 rather than -1. */
2297 gcc_checking_assert (INTVAL (x
.first
)
2298 == sext_hwi (INTVAL (x
.first
), precision
)
2299 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2301 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2303 case CONST_WIDE_INT
:
2304 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2305 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2307 #if TARGET_SUPPORTS_WIDE_INT == 0
2309 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2319 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2320 wide_int
min_value (machine_mode
, signop
);
2321 wide_int
max_value (machine_mode
, signop
);
2324 inline wi::hwi_with_prec
2325 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2327 return shwi (val
, GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)));
2330 /* Produce the smallest number that is represented in MODE. The precision
2331 is taken from MODE and the sign from SGN. */
2333 wi::min_value (machine_mode mode
, signop sgn
)
2335 return min_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2338 /* Produce the largest number that is represented in MODE. The precision
2339 is taken from MODE and the sign from SGN. */
2341 wi::max_value (machine_mode mode
, signop sgn
)
2343 return max_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2348 typedef poly_int
<NUM_POLY_INT_COEFFS
,
2349 generic_wide_int
<wide_int_ref_storage
<false, false> > >
2350 rtx_to_poly_wide_ref
;
2351 rtx_to_poly_wide_ref
to_poly_wide (const_rtx
, machine_mode
);
2354 /* Return the value of a CONST_POLY_INT in its native precision. */
2356 inline wi::rtx_to_poly_wide_ref
2357 const_poly_int_value (const_rtx x
)
2359 poly_int
<NUM_POLY_INT_COEFFS
, WIDE_INT_REF_FOR (wide_int
)> res
;
2360 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2361 res
.coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
];
2365 /* Return true if X is a scalar integer or a CONST_POLY_INT. The value
2366 can then be extracted using wi::to_poly_wide. */
2369 poly_int_rtx_p (const_rtx x
)
2371 return CONST_SCALAR_INT_P (x
) || CONST_POLY_INT_P (x
);
2374 /* Access X (which satisfies poly_int_rtx_p) as a poly_wide_int.
2375 MODE is the mode of X. */
2377 inline wi::rtx_to_poly_wide_ref
2378 wi::to_poly_wide (const_rtx x
, machine_mode mode
)
2380 if (CONST_POLY_INT_P (x
))
2381 return const_poly_int_value (x
);
2382 return rtx_mode_t (const_cast<rtx
> (x
), mode
);
2385 /* Return the value of X as a poly_int64. */
2388 rtx_to_poly_int64 (const_rtx x
)
2390 if (CONST_POLY_INT_P (x
))
2393 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2394 res
.coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
].to_shwi ();
2400 /* Return true if arbitrary value X is an integer constant that can
2401 be represented as a poly_int64. Store the value in *RES if so,
2402 otherwise leave it unmodified. */
2405 poly_int_rtx_p (const_rtx x
, poly_int64_pod
*res
)
2407 if (CONST_INT_P (x
))
2412 if (CONST_POLY_INT_P (x
))
2414 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2415 if (!wi::fits_shwi_p (CONST_POLY_INT_COEFFS (x
)[i
]))
2417 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2418 res
->coeffs
[i
] = CONST_POLY_INT_COEFFS (x
)[i
].to_shwi ();
2424 extern void init_rtlanal (void);
2425 extern int rtx_cost (rtx
, machine_mode
, enum rtx_code
, int, bool);
2426 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2427 extern void get_full_rtx_cost (rtx
, machine_mode
, enum rtx_code
, int,
2428 struct full_rtx_costs
*);
2429 extern bool native_encode_rtx (machine_mode
, rtx
, vec
<target_unit
> &,
2430 unsigned int, unsigned int);
2431 extern rtx
native_decode_rtx (machine_mode
, const vec
<target_unit
> &,
2433 extern rtx
native_decode_vector_rtx (machine_mode
, const vec
<target_unit
> &,
2434 unsigned int, unsigned int, unsigned int);
2435 extern poly_uint64
subreg_lsb (const_rtx
);
2436 extern poly_uint64
subreg_size_lsb (poly_uint64
, poly_uint64
, poly_uint64
);
2437 extern poly_uint64
subreg_size_offset_from_lsb (poly_uint64
, poly_uint64
,
2439 extern bool read_modify_subreg_p (const_rtx
);
2441 /* Given a subreg's OUTER_MODE, INNER_MODE, and SUBREG_BYTE, return the
2442 bit offset at which the subreg begins (counting from the least significant
2443 bit of the operand). */
2446 subreg_lsb_1 (machine_mode outer_mode
, machine_mode inner_mode
,
2447 poly_uint64 subreg_byte
)
2449 return subreg_size_lsb (GET_MODE_SIZE (outer_mode
),
2450 GET_MODE_SIZE (inner_mode
), subreg_byte
);
2453 /* Return the subreg byte offset for a subreg whose outer mode is
2454 OUTER_MODE, whose inner mode is INNER_MODE, and where there are
2455 LSB_SHIFT *bits* between the lsb of the outer value and the lsb of
2456 the inner value. This is the inverse of subreg_lsb_1 (which converts
2457 byte offsets to bit shifts). */
2460 subreg_offset_from_lsb (machine_mode outer_mode
,
2461 machine_mode inner_mode
,
2462 poly_uint64 lsb_shift
)
2464 return subreg_size_offset_from_lsb (GET_MODE_SIZE (outer_mode
),
2465 GET_MODE_SIZE (inner_mode
), lsb_shift
);
2468 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2469 poly_uint64
, machine_mode
);
2470 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2471 poly_uint64
, machine_mode
);
2472 extern unsigned int subreg_regno (const_rtx
);
2473 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2474 poly_uint64
, machine_mode
);
2475 extern int lowpart_subreg_regno (unsigned int, machine_mode
,
2477 extern unsigned int subreg_nregs (const_rtx
);
2478 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2479 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2480 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2481 extern bool constant_pool_constant_p (rtx
);
2482 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2483 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2484 extern void split_double (rtx
, rtx
*, rtx
*);
2485 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2486 extern void decompose_address (struct address_info
*, rtx
*,
2487 machine_mode
, addr_space_t
, enum rtx_code
);
2488 extern void decompose_lea_address (struct address_info
*, rtx
*);
2489 extern void decompose_mem_address (struct address_info
*, rtx
);
2490 extern void update_address (struct address_info
*);
2491 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2492 extern enum rtx_code
get_index_code (const struct address_info
*);
2494 /* 1 if RTX is a subreg containing a reg that is already known to be
2495 sign- or zero-extended from the mode of the subreg to the mode of
2496 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2499 When used as a LHS, is means that this extension must be done
2500 when assigning to SUBREG_REG. */
2502 #define SUBREG_PROMOTED_VAR_P(RTX) \
2503 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2505 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2506 this gives the necessary extensions:
2507 0 - signed (SPR_SIGNED)
2508 1 - normal unsigned (SPR_UNSIGNED)
2509 2 - value is both sign and unsign extended for mode
2510 (SPR_SIGNED_AND_UNSIGNED).
2511 -1 - pointer unsigned, which most often can be handled like unsigned
2512 extension, except for generating instructions where we need to
2513 emit special code (ptr_extend insns) on some architectures
2516 const int SRP_POINTER
= -1;
2517 const int SRP_SIGNED
= 0;
2518 const int SRP_UNSIGNED
= 1;
2519 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2521 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2522 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2524 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2529 _rtx->volatil = 0; \
2530 _rtx->unchanging = 0; \
2533 _rtx->volatil = 0; \
2534 _rtx->unchanging = 1; \
2536 case SRP_UNSIGNED: \
2537 _rtx->volatil = 1; \
2538 _rtx->unchanging = 0; \
2540 case SRP_SIGNED_AND_UNSIGNED: \
2541 _rtx->volatil = 1; \
2542 _rtx->unchanging = 1; \
2547 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2548 including SRP_SIGNED_AND_UNSIGNED if promoted for
2549 both signed and unsigned. */
2550 #define SUBREG_PROMOTED_GET(RTX) \
2551 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2552 + (RTX)->unchanging - 1)
2554 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2555 #define SUBREG_PROMOTED_SIGN(RTX) \
2556 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2557 : (RTX)->unchanging - 1)
2559 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2561 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2562 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2564 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2565 for UNSIGNED type. */
2566 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2567 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2569 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2570 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2571 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2572 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2573 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2575 /* True if the REG is the static chain register for some CALL_INSN. */
2576 #define STATIC_CHAIN_REG_P(RTX) \
2577 (RTL_FLAG_CHECK1 ("STATIC_CHAIN_REG_P", (RTX), REG)->jump)
2579 /* True if the subreg was generated by LRA for reload insns. Such
2580 subregs are valid only during LRA. */
2581 #define LRA_SUBREG_P(RTX) \
2582 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2584 /* Access various components of an ASM_OPERANDS rtx. */
2586 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2587 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2588 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2589 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2590 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2591 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2592 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2593 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2594 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2595 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2596 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2597 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2598 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2599 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2600 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2601 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2602 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2603 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2605 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2606 #define MEM_READONLY_P(RTX) \
2607 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2609 /* 1 if RTX is a mem and we should keep the alias set for this mem
2610 unchanged when we access a component. Set to 1, or example, when we
2611 are already in a non-addressable component of an aggregate. */
2612 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2613 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2615 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2616 #define MEM_VOLATILE_P(RTX) \
2617 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2618 ASM_INPUT)->volatil)
2620 /* 1 if RTX is a mem that cannot trap. */
2621 #define MEM_NOTRAP_P(RTX) \
2622 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2624 /* The memory attribute block. We provide access macros for each value
2625 in the block and provide defaults if none specified. */
2626 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2628 /* The register attribute block. We provide access macros for each value
2629 in the block and provide defaults if none specified. */
2630 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2632 #ifndef GENERATOR_FILE
2633 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2634 set, and may alias anything. Otherwise, the MEM can only alias
2635 MEMs in a conflicting alias set. This value is set in a
2636 language-dependent manner in the front-end, and should not be
2637 altered in the back-end. These set numbers are tested with
2638 alias_sets_conflict_p. */
2639 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2641 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2642 refer to part of a DECL. It may also be a COMPONENT_REF. */
2643 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2645 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2646 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2648 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2649 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2651 /* For a MEM rtx, the address space. */
2652 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2654 /* For a MEM rtx, true if its MEM_SIZE is known. */
2655 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2657 /* For a MEM rtx, the size in bytes of the MEM. */
2658 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2660 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2661 mode as a default when STRICT_ALIGNMENT, but not if not. */
2662 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2664 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2667 /* For a REG rtx, the decl it is known to refer to, if it is known to
2668 refer to part of a DECL. */
2669 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2671 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2673 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2675 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2676 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2677 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2678 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2679 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2680 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2681 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2682 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2684 /* 1 if RTX is a label_ref for a nonlocal label. */
2685 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2686 REG_LABEL_TARGET note. */
2687 #define LABEL_REF_NONLOCAL_P(RTX) \
2688 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2690 /* 1 if RTX is a code_label that should always be considered to be needed. */
2691 #define LABEL_PRESERVE_P(RTX) \
2692 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2694 /* During sched, 1 if RTX is an insn that must be scheduled together
2695 with the preceding insn. */
2696 #define SCHED_GROUP_P(RTX) \
2697 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2698 JUMP_INSN, CALL_INSN)->in_struct)
2700 /* For a SET rtx, SET_DEST is the place that is set
2701 and SET_SRC is the value it is set to. */
2702 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2703 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2704 #define SET_IS_RETURN_P(RTX) \
2705 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2707 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2708 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2709 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2711 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2712 conditionally executing the code on, COND_EXEC_CODE is the code
2713 to execute if the condition is true. */
2714 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2715 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2717 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2719 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2720 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2722 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2723 tree constant pool. This information is private to varasm.cc. */
2724 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2725 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2726 (RTX), SYMBOL_REF)->frame_related)
2728 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2729 #define SYMBOL_REF_FLAG(RTX) \
2730 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2732 /* 1 if RTX is a symbol_ref that has been the library function in
2733 emit_library_call. */
2734 #define SYMBOL_REF_USED(RTX) \
2735 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2737 /* 1 if RTX is a symbol_ref for a weak symbol. */
2738 #define SYMBOL_REF_WEAK(RTX) \
2739 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2741 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2742 SYMBOL_REF_CONSTANT. */
2743 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2745 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2747 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2748 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2750 /* The tree (decl or constant) associated with the symbol, or null. */
2751 #define SYMBOL_REF_DECL(RTX) \
2752 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2754 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2755 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2756 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2758 /* The rtx constant pool entry for a symbol, or null. */
2759 #define SYMBOL_REF_CONSTANT(RTX) \
2760 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2762 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2763 information derivable from the tree decl associated with this symbol.
2764 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2765 decl. In some cases this is a bug. But beyond that, it's nice to cache
2766 this information to avoid recomputing it. Finally, this allows space for
2767 the target to store more than one bit of information, as with
2769 #define SYMBOL_REF_FLAGS(RTX) \
2770 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2771 ->u2.symbol_ref_flags)
2773 /* These flags are common enough to be defined for all targets. They
2774 are computed by the default version of targetm.encode_section_info. */
2776 /* Set if this symbol is a function. */
2777 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2778 #define SYMBOL_REF_FUNCTION_P(RTX) \
2779 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2780 /* Set if targetm.binds_local_p is true. */
2781 #define SYMBOL_FLAG_LOCAL (1 << 1)
2782 #define SYMBOL_REF_LOCAL_P(RTX) \
2783 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2784 /* Set if targetm.in_small_data_p is true. */
2785 #define SYMBOL_FLAG_SMALL (1 << 2)
2786 #define SYMBOL_REF_SMALL_P(RTX) \
2787 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2788 /* The three-bit field at [5:3] is true for TLS variables; use
2789 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2790 #define SYMBOL_FLAG_TLS_SHIFT 3
2791 #define SYMBOL_REF_TLS_MODEL(RTX) \
2792 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2793 /* Set if this symbol is not defined in this translation unit. */
2794 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2795 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2796 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2797 /* Set if this symbol has a block_symbol structure associated with it. */
2798 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2799 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2800 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2801 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2802 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2803 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2804 #define SYMBOL_REF_ANCHOR_P(RTX) \
2805 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2807 /* Subsequent bits are available for the target to use. */
2808 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2809 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2811 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2812 structure to which the symbol belongs, or NULL if it has not been
2813 assigned a block. */
2814 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2816 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2817 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2818 RTX has not yet been assigned to a block, or it has not been given an
2819 offset within that block. */
2820 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2822 /* True if RTX is flagged to be a scheduling barrier. */
2823 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2824 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2826 /* Indicate whether the machine has any sort of auto increment addressing.
2827 If not, we can avoid checking for REG_INC notes. */
2829 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2830 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2831 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2832 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2833 #define AUTO_INC_DEC 1
2835 #define AUTO_INC_DEC 0
2838 /* Define a macro to look for REG_INC notes,
2839 but save time on machines where they never exist. */
2842 #define FIND_REG_INC_NOTE(INSN, REG) \
2843 ((REG) != NULL_RTX && REG_P ((REG)) \
2844 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2845 : find_reg_note ((INSN), REG_INC, (REG)))
2847 #define FIND_REG_INC_NOTE(INSN, REG) 0
2850 #ifndef HAVE_PRE_INCREMENT
2851 #define HAVE_PRE_INCREMENT 0
2854 #ifndef HAVE_PRE_DECREMENT
2855 #define HAVE_PRE_DECREMENT 0
2858 #ifndef HAVE_POST_INCREMENT
2859 #define HAVE_POST_INCREMENT 0
2862 #ifndef HAVE_POST_DECREMENT
2863 #define HAVE_POST_DECREMENT 0
2866 #ifndef HAVE_POST_MODIFY_DISP
2867 #define HAVE_POST_MODIFY_DISP 0
2870 #ifndef HAVE_POST_MODIFY_REG
2871 #define HAVE_POST_MODIFY_REG 0
2874 #ifndef HAVE_PRE_MODIFY_DISP
2875 #define HAVE_PRE_MODIFY_DISP 0
2878 #ifndef HAVE_PRE_MODIFY_REG
2879 #define HAVE_PRE_MODIFY_REG 0
2883 /* Some architectures do not have complete pre/post increment/decrement
2884 instruction sets, or only move some modes efficiently. These macros
2885 allow us to tune autoincrement generation. */
2887 #ifndef USE_LOAD_POST_INCREMENT
2888 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2891 #ifndef USE_LOAD_POST_DECREMENT
2892 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2895 #ifndef USE_LOAD_PRE_INCREMENT
2896 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2899 #ifndef USE_LOAD_PRE_DECREMENT
2900 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2903 #ifndef USE_STORE_POST_INCREMENT
2904 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2907 #ifndef USE_STORE_POST_DECREMENT
2908 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2911 #ifndef USE_STORE_PRE_INCREMENT
2912 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2915 #ifndef USE_STORE_PRE_DECREMENT
2916 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2919 /* Nonzero when we are generating CONCATs. */
2920 extern int generating_concat_p
;
2922 /* Nonzero when we are expanding trees to RTL. */
2923 extern int currently_expanding_to_rtl
;
2925 /* Generally useful functions. */
2927 #ifndef GENERATOR_FILE
2928 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2929 rather than size. */
2932 set_rtx_cost (rtx x
, bool speed_p
)
2934 return rtx_cost (x
, VOIDmode
, INSN
, 4, speed_p
);
2937 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2940 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2942 get_full_rtx_cost (x
, VOIDmode
, INSN
, 4, c
);
2945 /* Return the cost of moving X into a register, relative to the cost
2946 of a register move. SPEED_P is true if optimizing for speed rather
2950 set_src_cost (rtx x
, machine_mode mode
, bool speed_p
)
2952 return rtx_cost (x
, mode
, SET
, 1, speed_p
);
2955 /* Like set_src_cost, but return both the speed and size costs in C. */
2958 get_full_set_src_cost (rtx x
, machine_mode mode
, struct full_rtx_costs
*c
)
2960 get_full_rtx_cost (x
, mode
, SET
, 1, c
);
2964 /* A convenience macro to validate the arguments of a zero_extract
2965 expression. It determines whether SIZE lies inclusively within
2966 [1, RANGE], POS lies inclusively within between [0, RANGE - 1]
2967 and the sum lies inclusively within [1, RANGE]. RANGE must be
2968 >= 1, but SIZE and POS may be negative. */
2969 #define EXTRACT_ARGS_IN_RANGE(SIZE, POS, RANGE) \
2970 (IN_RANGE ((POS), 0, (unsigned HOST_WIDE_INT) (RANGE) - 1) \
2971 && IN_RANGE ((SIZE), 1, (unsigned HOST_WIDE_INT) (RANGE) \
2972 - (unsigned HOST_WIDE_INT)(POS)))
2975 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2976 extern poly_int64
trunc_int_for_mode (poly_int64
, machine_mode
);
2977 extern rtx
plus_constant (machine_mode
, rtx
, poly_int64
, bool = false);
2978 extern HOST_WIDE_INT
get_stack_check_protect (void);
2981 extern rtx
rtx_alloc (RTX_CODE CXX_MEM_STAT_INFO
);
2983 rtx_init (rtx rt
, RTX_CODE code
)
2985 memset (rt
, 0, RTX_HDR_SIZE
);
2986 PUT_CODE (rt
, code
);
2989 #define rtx_alloca(code) \
2990 rtx_init ((rtx) alloca (RTX_CODE_SIZE ((code))), (code))
2991 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2992 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2993 #define const_wide_int_alloc(NWORDS) \
2994 rtx_alloc_v (CONST_WIDE_INT, \
2995 (sizeof (struct hwivec_def) \
2996 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2998 extern rtvec rtvec_alloc (size_t);
2999 extern rtvec
shallow_copy_rtvec (rtvec
);
3000 extern bool shared_const_p (const_rtx
);
3001 extern rtx
copy_rtx (rtx
);
3002 extern enum rtx_code
classify_insn (rtx
);
3003 extern void dump_rtx_statistics (void);
3005 /* In emit-rtl.cc */
3006 extern rtx
copy_rtx_if_shared (rtx
);
3009 extern unsigned int rtx_size (const_rtx
);
3010 extern rtx
shallow_copy_rtx (const_rtx CXX_MEM_STAT_INFO
);
3011 extern int rtx_equal_p (const_rtx
, const_rtx
);
3012 extern bool rtvec_all_equal_p (const_rtvec
);
3013 extern bool rtvec_series_p (rtvec
, int);
3015 /* Return true if X is a vector constant with a duplicated element value. */
3018 const_vec_duplicate_p (const_rtx x
)
3020 return (GET_CODE (x
) == CONST_VECTOR
3021 && CONST_VECTOR_NPATTERNS (x
) == 1
3022 && CONST_VECTOR_DUPLICATE_P (x
));
3025 /* Return true if X is a vector constant with a duplicated element value.
3026 Store the duplicated element in *ELT if so. */
3028 template <typename T
>
3030 const_vec_duplicate_p (T x
, T
*elt
)
3032 if (const_vec_duplicate_p (x
))
3034 *elt
= CONST_VECTOR_ENCODED_ELT (x
, 0);
3040 /* Return true if X is a vector with a duplicated element value, either
3041 constant or nonconstant. Store the duplicated element in *ELT if so. */
3043 template <typename T
>
3045 vec_duplicate_p (T x
, T
*elt
)
3047 if (GET_CODE (x
) == VEC_DUPLICATE
3048 && !VECTOR_MODE_P (GET_MODE (XEXP (x
, 0))))
3053 return const_vec_duplicate_p (x
, elt
);
3056 /* If X is a vector constant with a duplicated element value, return that
3057 element value, otherwise return X. */
3059 template <typename T
>
3061 unwrap_const_vec_duplicate (T x
)
3063 if (const_vec_duplicate_p (x
))
3064 x
= CONST_VECTOR_ELT (x
, 0);
3068 /* In emit-rtl.cc. */
3069 extern wide_int
const_vector_int_elt (const_rtx
, unsigned int);
3070 extern rtx
const_vector_elt (const_rtx
, unsigned int);
3071 extern bool const_vec_series_p_1 (const_rtx
, rtx
*, rtx
*);
3073 /* Return true if X is an integer constant vector that contains a linear
3076 { B, B + S, B + 2 * S, B + 3 * S, ... }
3078 for a nonzero S. Store B and S in *BASE_OUT and *STEP_OUT on sucess. */
3081 const_vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
3083 if (GET_CODE (x
) == CONST_VECTOR
3084 && CONST_VECTOR_NPATTERNS (x
) == 1
3085 && !CONST_VECTOR_DUPLICATE_P (x
))
3086 return const_vec_series_p_1 (x
, base_out
, step_out
);
3090 /* Return true if X is a vector that contains a linear series of the
3093 { B, B + S, B + 2 * S, B + 3 * S, ... }
3095 where B and S are constant or nonconstant. Store B and S in
3096 *BASE_OUT and *STEP_OUT on sucess. */
3099 vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
3101 if (GET_CODE (x
) == VEC_SERIES
)
3103 *base_out
= XEXP (x
, 0);
3104 *step_out
= XEXP (x
, 1);
3107 return const_vec_series_p (x
, base_out
, step_out
);
3110 /* Return true if CONST_VECTORs X and Y, which are known to have the same mode,
3111 also have the same encoding. This means that they are equal whenever their
3112 operands are equal. */
3115 same_vector_encodings_p (const_rtx x
, const_rtx y
)
3117 /* Don't be fussy about the encoding of constant-length vectors,
3118 since XVECEXP (X, 0) and XVECEXP (Y, 0) list all the elements anyway. */
3119 if (poly_uint64 (CONST_VECTOR_NUNITS (x
)).is_constant ())
3122 return (CONST_VECTOR_NPATTERNS (x
) == CONST_VECTOR_NPATTERNS (y
)
3123 && (CONST_VECTOR_NELTS_PER_PATTERN (x
)
3124 == CONST_VECTOR_NELTS_PER_PATTERN (y
)));
3127 /* Return the unpromoted (outer) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3129 inline scalar_int_mode
3130 subreg_unpromoted_mode (rtx x
)
3132 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
3133 return as_a
<scalar_int_mode
> (GET_MODE (x
));
3136 /* Return the promoted (inner) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3138 inline scalar_int_mode
3139 subreg_promoted_mode (rtx x
)
3141 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
3142 return as_a
<scalar_int_mode
> (GET_MODE (SUBREG_REG (x
)));
3145 /* In emit-rtl.cc */
3146 extern rtvec
gen_rtvec_v (int, rtx
*);
3147 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
3148 extern rtx
gen_reg_rtx (machine_mode
);
3149 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, poly_int64
);
3150 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
3151 extern rtx
gen_reg_rtx_and_attrs (rtx
);
3152 extern rtx_code_label
*gen_label_rtx (void);
3153 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
3156 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
3158 /* In emit-rtl.cc */
3159 extern rtx
gen_highpart (machine_mode
, rtx
);
3160 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
3161 extern rtx
operand_subword (rtx
, poly_uint64
, int, machine_mode
);
3163 /* In emit-rtl.cc */
3164 extern rtx
operand_subword_force (rtx
, poly_uint64
, machine_mode
);
3165 extern int subreg_lowpart_p (const_rtx
);
3166 extern poly_uint64
subreg_size_lowpart_offset (poly_uint64
, poly_uint64
);
3168 /* Return true if a subreg of mode OUTERMODE would only access part of
3169 an inner register with mode INNERMODE. The other bits of the inner
3170 register would then be "don't care" on read. The behavior for writes
3171 depends on REGMODE_NATURAL_SIZE; bits in the same REGMODE_NATURAL_SIZE-d
3172 chunk would be clobbered but other bits would be preserved. */
3175 partial_subreg_p (machine_mode outermode
, machine_mode innermode
)
3177 /* Modes involved in a subreg must be ordered. In particular, we must
3178 always know at compile time whether the subreg is paradoxical. */
3179 poly_int64 outer_prec
= GET_MODE_PRECISION (outermode
);
3180 poly_int64 inner_prec
= GET_MODE_PRECISION (innermode
);
3181 gcc_checking_assert (ordered_p (outer_prec
, inner_prec
));
3182 return maybe_lt (outer_prec
, inner_prec
);
3185 /* Likewise return true if X is a subreg that is smaller than the inner
3186 register. Use read_modify_subreg_p to test whether writing to such
3187 a subreg preserves any part of the inner register. */
3190 partial_subreg_p (const_rtx x
)
3192 if (GET_CODE (x
) != SUBREG
)
3194 return partial_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3197 /* Return true if a subreg with the given outer and inner modes is
3201 paradoxical_subreg_p (machine_mode outermode
, machine_mode innermode
)
3203 /* Modes involved in a subreg must be ordered. In particular, we must
3204 always know at compile time whether the subreg is paradoxical. */
3205 poly_int64 outer_prec
= GET_MODE_PRECISION (outermode
);
3206 poly_int64 inner_prec
= GET_MODE_PRECISION (innermode
);
3207 gcc_checking_assert (ordered_p (outer_prec
, inner_prec
));
3208 return maybe_gt (outer_prec
, inner_prec
);
3211 /* Return true if X is a paradoxical subreg, false otherwise. */
3214 paradoxical_subreg_p (const_rtx x
)
3216 if (GET_CODE (x
) != SUBREG
)
3218 return paradoxical_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3221 /* Return the SUBREG_BYTE for an OUTERMODE lowpart of an INNERMODE value. */
3224 subreg_lowpart_offset (machine_mode outermode
, machine_mode innermode
)
3226 return subreg_size_lowpart_offset (GET_MODE_SIZE (outermode
),
3227 GET_MODE_SIZE (innermode
));
3230 /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3231 return the smaller of the two modes if they are different sizes,
3232 otherwise return the outer mode. */
3235 narrower_subreg_mode (machine_mode outermode
, machine_mode innermode
)
3237 return paradoxical_subreg_p (outermode
, innermode
) ? innermode
: outermode
;
3240 /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3241 return the mode that is big enough to hold both the outer and inner
3242 values. Prefer the outer mode in the event of a tie. */
3245 wider_subreg_mode (machine_mode outermode
, machine_mode innermode
)
3247 return partial_subreg_p (outermode
, innermode
) ? innermode
: outermode
;
3250 /* Likewise for subreg X. */
3253 wider_subreg_mode (const_rtx x
)
3255 return wider_subreg_mode (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
3258 extern poly_uint64
subreg_size_highpart_offset (poly_uint64
, poly_uint64
);
3260 /* Return the SUBREG_BYTE for an OUTERMODE highpart of an INNERMODE value. */
3263 subreg_highpart_offset (machine_mode outermode
, machine_mode innermode
)
3265 return subreg_size_highpart_offset (GET_MODE_SIZE (outermode
),
3266 GET_MODE_SIZE (innermode
));
3269 extern poly_int64
byte_lowpart_offset (machine_mode
, machine_mode
);
3270 extern poly_int64
subreg_memory_offset (machine_mode
, machine_mode
,
3272 extern poly_int64
subreg_memory_offset (const_rtx
);
3273 extern rtx
make_safe_from (rtx
, rtx
);
3274 extern rtx
convert_memory_address_addr_space_1 (scalar_int_mode
, rtx
,
3275 addr_space_t
, bool, bool);
3276 extern rtx
convert_memory_address_addr_space (scalar_int_mode
, rtx
,
3278 #define convert_memory_address(to_mode,x) \
3279 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
3280 extern const char *get_insn_name (int);
3281 extern rtx_insn
*get_last_insn_anywhere (void);
3282 extern rtx_insn
*get_first_nonnote_insn (void);
3283 extern rtx_insn
*get_last_nonnote_insn (void);
3284 extern void start_sequence (void);
3285 extern void push_to_sequence (rtx_insn
*);
3286 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
3287 extern void end_sequence (void);
3288 #if TARGET_SUPPORTS_WIDE_INT == 0
3289 extern double_int
rtx_to_double_int (const_rtx
);
3291 extern void cwi_output_hex (FILE *, const_rtx
);
3292 #if TARGET_SUPPORTS_WIDE_INT == 0
3293 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
3296 extern rtx
immed_wide_int_const (const poly_wide_int_ref
&, machine_mode
);
3299 extern rtx
force_const_mem (machine_mode
, rtx
);
3304 extern rtx
get_pool_constant (const_rtx
);
3305 extern rtx
get_pool_constant_mark (rtx
, bool *);
3306 extern fixed_size_mode
get_pool_mode (const_rtx
);
3307 extern rtx
simplify_subtraction (rtx
);
3308 extern void decide_function_section (tree
);
3310 /* In emit-rtl.cc */
3311 extern rtx_insn
*emit_insn_before (rtx
, rtx_insn
*);
3312 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
3313 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3314 extern rtx_jump_insn
*emit_jump_insn_before (rtx
, rtx_insn
*);
3315 extern rtx_jump_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
3316 extern rtx_jump_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*,
3318 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
3319 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
3320 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3321 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx_insn
*);
3322 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx_insn
*);
3323 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx_insn
*, location_t
);
3324 extern rtx_barrier
*emit_barrier_before (rtx_insn
*);
3325 extern rtx_code_label
*emit_label_before (rtx_code_label
*, rtx_insn
*);
3326 extern rtx_note
*emit_note_before (enum insn_note
, rtx_insn
*);
3327 extern rtx_insn
*emit_insn_after (rtx
, rtx_insn
*);
3328 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx_insn
*, basic_block
);
3329 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3330 extern rtx_jump_insn
*emit_jump_insn_after (rtx
, rtx_insn
*);
3331 extern rtx_jump_insn
*emit_jump_insn_after_noloc (rtx
, rtx_insn
*);
3332 extern rtx_jump_insn
*emit_jump_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3333 extern rtx_insn
*emit_call_insn_after (rtx
, rtx_insn
*);
3334 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx_insn
*);
3335 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3336 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx_insn
*);
3337 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx_insn
*);
3338 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx_insn
*, location_t
);
3339 extern rtx_barrier
*emit_barrier_after (rtx_insn
*);
3340 extern rtx_insn
*emit_label_after (rtx_insn
*, rtx_insn
*);
3341 extern rtx_note
*emit_note_after (enum insn_note
, rtx_insn
*);
3342 extern rtx_insn
*emit_insn (rtx
);
3343 extern rtx_insn
*emit_debug_insn (rtx
);
3344 extern rtx_insn
*emit_jump_insn (rtx
);
3345 extern rtx_insn
*emit_call_insn (rtx
);
3346 extern rtx_code_label
*emit_label (rtx
);
3347 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
3348 extern rtx_barrier
*emit_barrier (void);
3349 extern rtx_note
*emit_note (enum insn_note
);
3350 extern rtx_note
*emit_note_copy (rtx_note
*);
3351 extern rtx_insn
*gen_clobber (rtx
);
3352 extern rtx_insn
*emit_clobber (rtx
);
3353 extern rtx_insn
*gen_use (rtx
);
3354 extern rtx_insn
*emit_use (rtx
);
3355 extern rtx_insn
*make_insn_raw (rtx
);
3356 extern void add_function_usage_to (rtx
, rtx
);
3357 extern rtx_call_insn
*last_call_insn (void);
3358 extern rtx_insn
*previous_insn (rtx_insn
*);
3359 extern rtx_insn
*next_insn (rtx_insn
*);
3360 extern rtx_insn
*prev_nonnote_insn (rtx_insn
*);
3361 extern rtx_insn
*next_nonnote_insn (rtx_insn
*);
3362 extern rtx_insn
*prev_nondebug_insn (rtx_insn
*);
3363 extern rtx_insn
*next_nondebug_insn (rtx_insn
*);
3364 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx_insn
*);
3365 extern rtx_insn
*prev_nonnote_nondebug_insn_bb (rtx_insn
*);
3366 extern rtx_insn
*next_nonnote_nondebug_insn (rtx_insn
*);
3367 extern rtx_insn
*next_nonnote_nondebug_insn_bb (rtx_insn
*);
3368 extern rtx_insn
*prev_real_insn (rtx_insn
*);
3369 extern rtx_insn
*next_real_insn (rtx_insn
*);
3370 extern rtx_insn
*prev_real_nondebug_insn (rtx_insn
*);
3371 extern rtx_insn
*next_real_nondebug_insn (rtx
);
3372 extern rtx_insn
*prev_active_insn (rtx_insn
*);
3373 extern rtx_insn
*next_active_insn (rtx_insn
*);
3374 extern int active_insn_p (const rtx_insn
*);
3376 /* In emit-rtl.cc */
3377 extern int insn_line (const rtx_insn
*);
3378 extern const char * insn_file (const rtx_insn
*);
3379 extern tree
insn_scope (const rtx_insn
*);
3380 extern expanded_location
insn_location (const rtx_insn
*);
3381 extern int insn_discriminator (const rtx_insn
*);
3382 extern location_t prologue_location
, epilogue_location
;
3385 extern enum rtx_code
reverse_condition (enum rtx_code
);
3386 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
3387 extern enum rtx_code
swap_condition (enum rtx_code
);
3388 extern enum rtx_code
unsigned_condition (enum rtx_code
);
3389 extern enum rtx_code
signed_condition (enum rtx_code
);
3390 extern void mark_jump_label (rtx
, rtx_insn
*, int);
3392 /* Return true if integer comparison operator CODE interprets its operands
3396 unsigned_condition_p (enum rtx_code code
)
3398 return unsigned_condition (code
) == code
;
3402 extern rtx_insn
*delete_related_insns (rtx
);
3405 extern rtx
*find_constant_term_loc (rtx
*);
3407 /* In emit-rtl.cc */
3408 extern rtx_insn
*try_split (rtx
, rtx_insn
*, int);
3410 /* In insn-recog.cc (generated by genrecog). */
3411 extern rtx_insn
*split_insns (rtx
, rtx_insn
*);
3413 /* In simplify-rtx.cc */
3415 /* A class that records the context in which a simplification
3417 class simplify_context
3420 rtx
simplify_unary_operation (rtx_code
, machine_mode
, rtx
, machine_mode
);
3421 rtx
simplify_binary_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3422 rtx
simplify_ternary_operation (rtx_code
, machine_mode
, machine_mode
,
3424 rtx
simplify_relational_operation (rtx_code
, machine_mode
, machine_mode
,
3426 rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
, poly_uint64
);
3428 rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
3430 rtx
simplify_merge_mask (rtx
, rtx
, int);
3432 rtx
simplify_gen_unary (rtx_code
, machine_mode
, rtx
, machine_mode
);
3433 rtx
simplify_gen_binary (rtx_code
, machine_mode
, rtx
, rtx
);
3434 rtx
simplify_gen_ternary (rtx_code
, machine_mode
, machine_mode
,
3436 rtx
simplify_gen_relational (rtx_code
, machine_mode
, machine_mode
, rtx
, rtx
);
3437 rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
, poly_uint64
);
3438 rtx
simplify_gen_vec_select (rtx
, unsigned int);
3440 /* Tracks the level of MEM nesting for the value being simplified:
3441 0 means the value is not in a MEM, >0 means it is. This is needed
3442 because the canonical representation of multiplication is different
3443 inside a MEM than outside. */
3444 unsigned int mem_depth
= 0;
3446 /* Tracks number of simplify_associative_operation calls performed during
3447 outermost simplify* call. */
3448 unsigned int assoc_count
= 0;
3450 /* Limit for the above number, return NULL from
3451 simplify_associative_operation after we reach that assoc_count. */
3452 static const unsigned int max_assoc_count
= 64;
3455 rtx
simplify_truncation (machine_mode
, rtx
, machine_mode
);
3456 rtx
simplify_byte_swapping_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3457 rtx
simplify_associative_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3458 rtx
simplify_distributive_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3459 rtx
simplify_logical_relational_operation (rtx_code
, machine_mode
, rtx
, rtx
);
3460 rtx
simplify_binary_operation_series (rtx_code
, machine_mode
, rtx
, rtx
);
3461 rtx
simplify_distribute_over_subregs (rtx_code
, machine_mode
, rtx
, rtx
);
3462 rtx
simplify_shift_const_int (rtx_code
, machine_mode
, rtx
, unsigned int);
3463 rtx
simplify_plus_minus (rtx_code
, machine_mode
, rtx
, rtx
);
3464 rtx
simplify_cond_clz_ctz (rtx
, rtx_code
, rtx
, rtx
);
3466 rtx
simplify_unary_operation_1 (rtx_code
, machine_mode
, rtx
);
3467 rtx
simplify_binary_operation_1 (rtx_code
, machine_mode
, rtx
, rtx
, rtx
, rtx
);
3468 rtx
simplify_ternary_operation_1 (rtx_code
, machine_mode
, machine_mode
,
3470 rtx
simplify_relational_operation_1 (rtx_code
, machine_mode
, machine_mode
,
3475 simplify_unary_operation (rtx_code code
, machine_mode mode
, rtx op
,
3476 machine_mode op_mode
)
3478 return simplify_context ().simplify_unary_operation (code
, mode
, op
,
3483 simplify_binary_operation (rtx_code code
, machine_mode mode
, rtx op0
, rtx op1
)
3485 return simplify_context ().simplify_binary_operation (code
, mode
, op0
, op1
);
3489 simplify_ternary_operation (rtx_code code
, machine_mode mode
,
3490 machine_mode op0_mode
, rtx op0
, rtx op1
, rtx op2
)
3492 return simplify_context ().simplify_ternary_operation (code
, mode
, op0_mode
,
3497 simplify_relational_operation (rtx_code code
, machine_mode mode
,
3498 machine_mode op_mode
, rtx op0
, rtx op1
)
3500 return simplify_context ().simplify_relational_operation (code
, mode
,
3505 simplify_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
,
3508 return simplify_context ().simplify_subreg (outermode
, op
, innermode
, byte
);
3512 simplify_gen_unary (rtx_code code
, machine_mode mode
, rtx op
,
3513 machine_mode op_mode
)
3515 return simplify_context ().simplify_gen_unary (code
, mode
, op
, op_mode
);
3519 simplify_gen_binary (rtx_code code
, machine_mode mode
, rtx op0
, rtx op1
)
3521 return simplify_context ().simplify_gen_binary (code
, mode
, op0
, op1
);
3525 simplify_gen_ternary (rtx_code code
, machine_mode mode
, machine_mode op0_mode
,
3526 rtx op0
, rtx op1
, rtx op2
)
3528 return simplify_context ().simplify_gen_ternary (code
, mode
, op0_mode
,
3533 simplify_gen_relational (rtx_code code
, machine_mode mode
,
3534 machine_mode op_mode
, rtx op0
, rtx op1
)
3536 return simplify_context ().simplify_gen_relational (code
, mode
, op_mode
,
3541 simplify_gen_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
,
3544 return simplify_context ().simplify_gen_subreg (outermode
, op
,
3549 simplify_gen_vec_select (rtx op
, unsigned int index
)
3551 return simplify_context ().simplify_gen_vec_select (op
, index
);
3555 lowpart_subreg (machine_mode outermode
, rtx op
, machine_mode innermode
)
3557 return simplify_context ().lowpart_subreg (outermode
, op
, innermode
);
3560 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
3562 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
3564 extern rtx
simplify_const_relational_operation (enum rtx_code
,
3565 machine_mode
, rtx
, rtx
);
3566 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
3567 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
3568 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
3569 extern rtx
simplify_rtx (const_rtx
);
3570 extern rtx
avoid_constant_pool_reference (rtx
);
3571 extern rtx
delegitimize_mem_from_attrs (rtx
);
3572 extern bool mode_signbit_p (machine_mode
, const_rtx
);
3573 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
3574 extern bool val_signbit_known_set_p (machine_mode
,
3575 unsigned HOST_WIDE_INT
);
3576 extern bool val_signbit_known_clear_p (machine_mode
,
3577 unsigned HOST_WIDE_INT
);
3578 extern bool reverse_rotate_by_imm_p (machine_mode
, unsigned int, rtx
);
3581 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
3582 const predefined_function_abi
*);
3583 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
3585 /* In emit-rtl.cc */
3586 extern rtx
set_for_reg_notes (rtx
);
3587 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
3588 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
3589 extern void set_insn_deleted (rtx_insn
*);
3591 /* Functions in rtlanal.cc */
3593 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
3594 extern rtx
simple_regno_set (rtx
, unsigned int);
3595 extern bool contains_symbol_ref_p (const_rtx
);
3596 extern bool contains_symbolic_reference_p (const_rtx
);
3597 extern bool contains_constant_pool_address_p (const_rtx
);
3598 extern void add_auto_inc_notes (rtx_insn
*, rtx
);
3600 /* Handle the cheap and common cases inline for performance. */
3602 inline rtx
single_set (const rtx_insn
*insn
)
3607 if (GET_CODE (PATTERN (insn
)) == SET
)
3608 return PATTERN (insn
);
3610 /* Defer to the more expensive case. */
3611 return single_set_2 (insn
, PATTERN (insn
));
3614 extern scalar_int_mode
get_address_mode (rtx mem
);
3615 extern int rtx_addr_can_trap_p (const_rtx
);
3616 extern bool nonzero_address_p (const_rtx
);
3617 extern int rtx_unstable_p (const_rtx
);
3618 extern bool rtx_varies_p (const_rtx
, bool);
3619 extern bool rtx_addr_varies_p (const_rtx
, bool);
3620 extern rtx
get_call_rtx_from (const rtx_insn
*);
3621 extern tree
get_call_fndecl (const rtx_insn
*);
3622 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
3623 extern rtx
get_related_value (const_rtx
);
3624 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
3625 extern void split_const (rtx
, rtx
*, rtx
*);
3626 extern rtx
strip_offset (rtx
, poly_int64_pod
*);
3627 extern poly_int64
get_args_size (const_rtx
);
3628 extern bool unsigned_reg_p (rtx
);
3629 extern int reg_mentioned_p (const_rtx
, const_rtx
);
3630 extern int count_occurrences (const_rtx
, const_rtx
, int);
3631 extern int reg_referenced_p (const_rtx
, const_rtx
);
3632 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3633 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3634 extern int commutative_operand_precedence (rtx
);
3635 extern bool swap_commutative_operands_p (rtx
, rtx
);
3636 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3637 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
3638 extern int modified_in_p (const_rtx
, const_rtx
);
3639 extern int reg_set_p (const_rtx
, const_rtx
);
3640 extern int multiple_sets (const_rtx
);
3641 extern int set_noop_p (const_rtx
);
3642 extern int noop_move_p (const rtx_insn
*);
3643 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
3644 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
3645 extern const_rtx
set_of (const_rtx
, const_rtx
);
3646 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
3647 extern void record_hard_reg_uses (rtx
*, void *);
3648 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
3649 extern void find_all_hard_reg_sets (const rtx_insn
*, HARD_REG_SET
*, bool);
3650 extern void note_pattern_stores (const_rtx
,
3651 void (*) (rtx
, const_rtx
, void *), void *);
3652 extern void note_stores (const rtx_insn
*,
3653 void (*) (rtx
, const_rtx
, void *), void *);
3654 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
3655 extern int dead_or_set_p (const rtx_insn
*, const_rtx
);
3656 extern int dead_or_set_regno_p (const rtx_insn
*, unsigned int);
3657 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
3658 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
3659 extern rtx
find_reg_equal_equiv_note (const_rtx
);
3660 extern rtx
find_constant_src (const rtx_insn
*);
3661 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
3662 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
3663 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
3664 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
3665 extern void add_int_reg_note (rtx_insn
*, enum reg_note
, int);
3666 extern void add_args_size_note (rtx_insn
*, poly_int64
);
3667 extern void add_shallow_copy_of_reg_note (rtx_insn
*, rtx
);
3668 extern rtx
duplicate_reg_note (rtx
);
3669 extern void remove_note (rtx_insn
*, const_rtx
);
3670 extern bool remove_reg_equal_equiv_notes (rtx_insn
*, bool = false);
3671 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3672 extern int side_effects_p (const_rtx
);
3673 extern int volatile_refs_p (const_rtx
);
3674 extern int volatile_insn_p (const_rtx
);
3675 extern int may_trap_p_1 (const_rtx
, unsigned);
3676 extern int may_trap_p (const_rtx
);
3677 extern int may_trap_or_fault_p (const_rtx
);
3678 extern bool can_throw_internal (const_rtx
);
3679 extern bool can_throw_external (const_rtx
);
3680 extern bool insn_could_throw_p (const_rtx
);
3681 extern bool insn_nothrow_p (const_rtx
);
3682 extern bool can_nonlocal_goto (const rtx_insn
*);
3683 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
3684 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
3685 extern rtx
replace_rtx (rtx
, rtx
, rtx
, bool = false);
3686 extern void replace_label (rtx
*, rtx
, rtx
, bool);
3687 extern void replace_label_in_insn (rtx_insn
*, rtx_insn
*, rtx_insn
*, bool);
3688 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
3689 extern bool tablejump_p (const rtx_insn
*, rtx_insn
**, rtx_jump_table_data
**);
3690 extern rtx
tablejump_casesi_pattern (const rtx_insn
*insn
);
3691 extern int computed_jump_p (const rtx_insn
*);
3692 extern bool tls_referenced_p (const_rtx
);
3693 extern bool contains_mem_rtx_p (rtx x
);
3694 extern bool register_asm_p (const_rtx
);
3696 /* Overload for refers_to_regno_p for checking a single register. */
3698 refers_to_regno_p (unsigned int regnum
, const_rtx x
, rtx
* loc
= NULL
)
3700 return refers_to_regno_p (regnum
, regnum
+ 1, x
, loc
);
3703 /* Callback for for_each_inc_dec, to process the autoinc operation OP
3704 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3705 NULL. The callback is passed the same opaque ARG passed to
3706 for_each_inc_dec. Return zero to continue looking for other
3707 autoinc operations or any other value to interrupt the traversal and
3708 return that value to the caller of for_each_inc_dec. */
3709 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
3710 rtx srcoff
, void *arg
);
3711 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
3713 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
3715 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
3716 rtx_equal_p_callback_function
);
3718 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
3720 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
3721 bool, hash_rtx_callback_function
);
3723 extern rtx
regno_use_in (unsigned int, rtx
);
3724 extern int auto_inc_p (const_rtx
);
3725 extern bool in_insn_list_p (const rtx_insn_list
*, const rtx_insn
*);
3726 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
3727 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
3728 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
3729 extern bool keep_with_call_p (const rtx_insn
*);
3730 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
3731 extern int pattern_cost (rtx
, bool);
3732 extern int insn_cost (rtx_insn
*, bool);
3733 extern unsigned seq_cost (const rtx_insn
*, bool);
3735 /* Given an insn and condition, return a canonical description of
3736 the test being made. */
3737 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
3740 /* Given a JUMP_INSN, return a canonical description of the test
3742 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
3744 /* Information about a subreg of a hard register. */
3747 /* Offset of first hard register involved in the subreg. */
3749 /* Number of hard registers involved in the subreg. In the case of
3750 a paradoxical subreg, this is the number of registers that would
3751 be modified by writing to the subreg; some of them may be don't-care
3752 when reading from the subreg. */
3754 /* Whether this subreg can be represented as a hard reg with the new
3755 mode (by adding OFFSET to the original hard register). */
3756 bool representable_p
;
3759 extern void subreg_get_info (unsigned int, machine_mode
,
3760 poly_uint64
, machine_mode
,
3761 struct subreg_info
*);
3765 extern void free_EXPR_LIST_list (rtx_expr_list
**);
3766 extern void free_INSN_LIST_list (rtx_insn_list
**);
3767 extern void free_EXPR_LIST_node (rtx
);
3768 extern void free_INSN_LIST_node (rtx
);
3769 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
3770 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
3771 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
3772 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
3773 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
3774 extern rtx
remove_list_elem (rtx
, rtx
*);
3775 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
3776 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
3781 /* Resize reg info. */
3782 extern bool resize_reg_info (void);
3783 /* Free up register info memory. */
3784 extern void free_reg_info (void);
3785 extern void init_subregs_of_mode (void);
3786 extern void finish_subregs_of_mode (void);
3787 extern void reginfo_cc_finalize (void);
3790 extern rtx
extract_asm_operands (rtx
);
3791 extern int asm_noperands (const_rtx
);
3792 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
3793 machine_mode
*, location_t
*);
3794 extern void get_referenced_operands (const char *, bool *, unsigned int);
3796 extern enum reg_class
reg_preferred_class (int);
3797 extern enum reg_class
reg_alternate_class (int);
3798 extern enum reg_class
reg_allocno_class (int);
3799 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
3802 extern void split_all_insns (void);
3803 extern unsigned int split_all_insns_noflow (void);
3805 #define MAX_SAVED_CONST_INT 64
3806 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
3808 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3809 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3810 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3811 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3812 extern GTY(()) rtx const_true_rtx
;
3814 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3816 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3817 same as VOIDmode. */
3819 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3821 /* Likewise, for the constants 1 and 2 and -1. */
3823 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3824 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3825 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3827 extern GTY(()) rtx pc_rtx
;
3828 extern GTY(()) rtx ret_rtx
;
3829 extern GTY(()) rtx simple_return_rtx
;
3830 extern GTY(()) rtx_insn
*invalid_insn_rtx
;
3832 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3833 is used to represent the frame pointer. This is because the
3834 hard frame pointer and the automatic variables are separated by an amount
3835 that cannot be determined until after register allocation. We can assume
3836 that in this case ELIMINABLE_REGS will be defined, one action of which
3837 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3838 #ifndef HARD_FRAME_POINTER_REGNUM
3839 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3842 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3843 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3844 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3847 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3848 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3849 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3852 /* Index labels for global_rtl. */
3853 enum global_rtl_index
3857 /* For register elimination to work properly these hard_frame_pointer_rtx,
3858 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3859 the same register. */
3860 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3861 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3863 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3864 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3866 GR_HARD_FRAME_POINTER
,
3868 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3869 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3870 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3875 GR_VIRTUAL_INCOMING_ARGS
,
3876 GR_VIRTUAL_STACK_ARGS
,
3877 GR_VIRTUAL_STACK_DYNAMIC
,
3878 GR_VIRTUAL_OUTGOING_ARGS
,
3880 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3885 /* Target-dependent globals. */
3886 struct GTY(()) target_rtl
{
3887 /* All references to the hard registers in global_rtl_index go through
3888 these unique rtl objects. On machines where the frame-pointer and
3889 arg-pointer are the same register, they use the same unique object.
3891 After register allocation, other rtl objects which used to be pseudo-regs
3892 may be clobbered to refer to the frame-pointer register.
3893 But references that were originally to the frame-pointer can be
3894 distinguished from the others because they contain frame_pointer_rtx.
3896 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3897 tricky: until register elimination has taken place hard_frame_pointer_rtx
3898 should be used if it is being set, and frame_pointer_rtx otherwise. After
3899 register elimination hard_frame_pointer_rtx should always be used.
3900 On machines where the two registers are same (most) then these are the
3902 rtx x_global_rtl
[GR_MAX
];
3904 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3905 rtx x_pic_offset_table_rtx
;
3907 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3908 This is used to implement __builtin_return_address for some machines;
3909 see for instance the MIPS port. */
3910 rtx x_return_address_pointer_rtx
;
3912 /* Commonly used RTL for hard registers. These objects are not
3913 necessarily unique, so we allocate them separately from global_rtl.
3914 They are initialized once per compilation unit, then copied into
3915 regno_reg_rtx at the beginning of each function. */
3916 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3918 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3919 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3921 /* Static hunks of RTL used by the aliasing code; these are treated
3922 as persistent to avoid unnecessary RTL allocations. */
3923 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3925 /* The default memory attributes for each mode. */
3926 class mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3928 /* Track if RTL has been initialized. */
3929 bool target_specific_initialized
;
3932 extern GTY(()) struct target_rtl default_target_rtl
;
3933 #if SWITCHABLE_TARGET
3934 extern struct target_rtl
*this_target_rtl
;
3936 #define this_target_rtl (&default_target_rtl)
3939 #define global_rtl \
3940 (this_target_rtl->x_global_rtl)
3941 #define pic_offset_table_rtx \
3942 (this_target_rtl->x_pic_offset_table_rtx)
3943 #define return_address_pointer_rtx \
3944 (this_target_rtl->x_return_address_pointer_rtx)
3945 #define top_of_stack \
3946 (this_target_rtl->x_top_of_stack)
3947 #define mode_mem_attrs \
3948 (this_target_rtl->x_mode_mem_attrs)
3950 /* All references to certain hard regs, except those created
3951 by allocating pseudo regs into them (when that's possible),
3952 go through these unique rtx objects. */
3953 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3954 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3955 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3956 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3958 #ifndef GENERATOR_FILE
3959 /* Return the attributes of a MEM rtx. */
3960 inline const class mem_attrs
*
3961 get_mem_attrs (const_rtx x
)
3963 class mem_attrs
*attrs
;
3965 attrs
= MEM_ATTRS (x
);
3967 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3972 /* Include the RTL generation functions. */
3974 #ifndef GENERATOR_FILE
3976 #undef gen_rtx_ASM_INPUT
3977 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3978 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3979 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3980 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3983 /* There are some RTL codes that require special attention; the
3984 generation functions included above do the raw handling. If you
3985 add to this list, modify special_rtx in gengenrtl.cc as well. */
3987 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3988 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3990 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3991 basic_block bb
, rtx pattern
, int location
, int code
,
3993 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3994 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3995 extern void set_mode_and_regno (rtx
, machine_mode
, unsigned int);
3996 extern rtx
init_raw_REG (rtx
, machine_mode
, unsigned int);
3997 extern rtx
gen_raw_REG (machine_mode
, unsigned int);
3998 #define alloca_raw_REG(mode, regno) \
3999 init_raw_REG (rtx_alloca (REG), (mode), (regno))
4000 extern rtx
gen_rtx_REG (machine_mode
, unsigned int);
4001 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, poly_uint64
);
4002 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
4003 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
4004 enum var_init_status
);
4006 #ifdef GENERATOR_FILE
4007 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
4010 PUT_MODE (rtx x
, machine_mode mode
)
4013 set_mode_and_regno (x
, mode
, REGNO (x
));
4015 PUT_MODE_RAW (x
, mode
);
4019 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
4021 /* Virtual registers are used during RTL generation to refer to locations into
4022 the stack frame when the actual location isn't known until RTL generation
4023 is complete. The routine instantiate_virtual_regs replaces these with
4024 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
4027 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
4029 /* This points to the first word of the incoming arguments passed on the stack,
4030 either by the caller or by the callee when pretending it was passed by the
4033 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
4035 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
4037 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
4038 variable on the stack. Otherwise, it points to the first variable on
4041 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
4043 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
4045 /* This points to the location of dynamically-allocated memory on the stack
4046 immediately after the stack pointer has been adjusted by the amount
4049 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
4051 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
4053 /* This points to the location in the stack at which outgoing arguments should
4054 be written when the stack is pre-pushed (arguments pushed using push
4055 insns always use sp). */
4057 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
4059 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
4061 /* This points to the Canonical Frame Address of the function. This
4062 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
4063 but is calculated relative to the arg pointer for simplicity; the
4064 frame pointer nor stack pointer are necessarily fixed relative to
4065 the CFA until after reload. */
4067 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
4069 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
4071 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
4073 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
4076 #define virtual_preferred_stack_boundary_rtx \
4077 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
4079 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
4080 ((FIRST_VIRTUAL_REGISTER) + 5)
4082 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
4084 /* Nonzero if REGNUM is a pointer into the stack frame. */
4085 #define REGNO_PTR_FRAME_P(REGNUM) \
4086 ((REGNUM) == STACK_POINTER_REGNUM \
4087 || (REGNUM) == FRAME_POINTER_REGNUM \
4088 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
4089 || (REGNUM) == ARG_POINTER_REGNUM \
4090 || VIRTUAL_REGISTER_NUM_P (REGNUM))
4092 /* REGNUM never really appearing in the INSN stream. */
4093 #define INVALID_REGNUM (~(unsigned int) 0)
4095 /* REGNUM for which no debug information can be generated. */
4096 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
4098 extern rtx
output_constant_def (tree
, int);
4099 extern rtx
lookup_constant_def (tree
);
4101 /* Nonzero after end of reload pass.
4102 Set to 1 or 0 by reload1.cc. */
4104 extern int reload_completed
;
4106 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
4107 extern int epilogue_completed
;
4109 /* Set to 1 while reload_as_needed is operating.
4110 Required by some machines to handle any generated moves differently. */
4112 extern int reload_in_progress
;
4114 /* Set to 1 while in lra. */
4115 extern int lra_in_progress
;
4117 /* This macro indicates whether you may create a new
4120 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
4123 /* Nonzero after end of regstack pass.
4124 Set to 1 or 0 by reg-stack.cc. */
4125 extern int regstack_completed
;
4128 /* If this is nonzero, we do not bother generating VOLATILE
4129 around volatile memory references, and we are willing to
4130 output indirect addresses. If cse is to follow, we reject
4131 indirect addresses so a useful potential cse is generated;
4132 if it is used only once, instruction combination will produce
4133 the same indirect address eventually. */
4134 extern int cse_not_expected
;
4136 /* Translates rtx code to tree code, for those codes needed by
4137 real_arithmetic. The function returns an int because the caller may not
4138 know what `enum tree_code' means. */
4140 extern int rtx_to_tree_code (enum rtx_code
);
4143 extern int delete_trivially_dead_insns (rtx_insn
*, int);
4144 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
4145 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
4148 extern bool check_for_inc_dec (rtx_insn
*insn
);
4151 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
4152 extern bool jump_to_label_p (const rtx_insn
*);
4153 extern int condjump_p (const rtx_insn
*);
4154 extern int any_condjump_p (const rtx_insn
*);
4155 extern int any_uncondjump_p (const rtx_insn
*);
4156 extern rtx
pc_set (const rtx_insn
*);
4157 extern rtx
condjump_label (const rtx_insn
*);
4158 extern int simplejump_p (const rtx_insn
*);
4159 extern int returnjump_p (const rtx_insn
*);
4160 extern int eh_returnjump_p (rtx_insn
*);
4161 extern int onlyjump_p (const rtx_insn
*);
4162 extern int invert_jump_1 (rtx_jump_insn
*, rtx
);
4163 extern int invert_jump (rtx_jump_insn
*, rtx
, int);
4164 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
4165 extern int true_regnum (const_rtx
);
4166 extern unsigned int reg_or_subregno (const_rtx
);
4167 extern int redirect_jump_1 (rtx_insn
*, rtx
);
4168 extern void redirect_jump_2 (rtx_jump_insn
*, rtx
, rtx
, int, int);
4169 extern int redirect_jump (rtx_jump_insn
*, rtx
, int);
4170 extern void rebuild_jump_labels (rtx_insn
*);
4171 extern void rebuild_jump_labels_chain (rtx_insn
*);
4172 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
4173 extern enum rtx_code
reversed_comparison_code (const_rtx
, const rtx_insn
*);
4174 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
4175 const_rtx
, const rtx_insn
*);
4176 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
4177 extern int condjump_in_parallel_p (const rtx_insn
*);
4179 /* In emit-rtl.cc. */
4180 extern int max_reg_num (void);
4181 extern int max_label_num (void);
4182 extern int get_first_label_num (void);
4183 extern void maybe_set_first_label_num (rtx_code_label
*);
4184 extern void delete_insns_since (rtx_insn
*);
4185 extern void mark_reg_pointer (rtx
, int);
4186 extern void mark_user_reg (rtx
);
4187 extern void reset_used_flags (rtx
);
4188 extern void set_used_flags (rtx
);
4189 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
4190 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
4191 extern int get_max_insn_count (void);
4192 extern int in_sequence_p (void);
4193 extern void init_emit (void);
4194 extern void init_emit_regs (void);
4195 extern void init_derived_machine_modes (void);
4196 extern void init_emit_once (void);
4197 extern void push_topmost_sequence (void);
4198 extern void pop_topmost_sequence (void);
4199 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
4200 extern unsigned int unshare_all_rtl (void);
4201 extern void unshare_all_rtl_again (rtx_insn
*);
4202 extern void unshare_all_rtl_in_chain (rtx_insn
*);
4203 extern void verify_rtl_sharing (void);
4204 extern void add_insn (rtx_insn
*);
4205 extern void add_insn_before (rtx_insn
*, rtx_insn
*, basic_block
);
4206 extern void add_insn_after (rtx_insn
*, rtx_insn
*, basic_block
);
4207 extern void remove_insn (rtx_insn
*);
4208 extern rtx_insn
*emit (rtx
, bool = true);
4209 extern void emit_insn_at_entry (rtx
);
4210 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
4211 extern rtx
gen_const_mem (machine_mode
, rtx
);
4212 extern rtx
gen_frame_mem (machine_mode
, rtx
);
4213 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
4214 extern bool validate_subreg (machine_mode
, machine_mode
,
4215 const_rtx
, poly_uint64
);
4218 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
4219 extern rtx
remove_death (unsigned int, rtx_insn
*);
4220 extern void dump_combine_stats (FILE *);
4221 extern void dump_combine_total_stats (FILE *);
4222 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
4224 /* In sched-rgn.cc. */
4225 extern void schedule_insns (void);
4227 /* In sched-ebb.cc. */
4228 extern void schedule_ebbs (void);
4230 /* In sel-sched-dump.cc. */
4231 extern void sel_sched_fix_param (const char *param
, const char *val
);
4233 /* In print-rtl.cc */
4234 extern const char *print_rtx_head
;
4235 extern void debug (const rtx_def
&ref
);
4236 extern void debug (const rtx_def
*ptr
);
4237 extern void debug_rtx (const_rtx
);
4238 extern void debug_rtx_list (const rtx_insn
*, int);
4239 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
4240 extern const rtx_insn
*debug_rtx_find (const rtx_insn
*, int);
4241 extern void print_mem_expr (FILE *, const_tree
);
4242 extern void print_rtl (FILE *, const_rtx
);
4243 extern void print_simple_rtl (FILE *, const_rtx
);
4244 extern int print_rtl_single (FILE *, const_rtx
);
4245 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
4246 extern void print_inline_rtx (FILE *, const_rtx
, int);
4249 extern void expand_null_return (void);
4250 extern void expand_naked_return (void);
4251 extern void emit_jump (rtx
);
4253 /* Memory operation built-ins differ by return value. Mapping
4254 of the enum values is following:
4255 - RETURN_BEGIN - return destination, e.g. memcpy
4256 - RETURN_END - return destination + n, e.g. mempcpy
4257 - RETURN_END_MINUS_ONE - return a pointer to the terminating
4258 null byte of the string, e.g. strcpy
4265 RETURN_END_MINUS_ONE
4269 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
4270 unsigned int, memop_ret
);
4271 extern poly_int64
find_args_size_adjust (rtx_insn
*);
4272 extern poly_int64
fixup_args_size_notes (rtx_insn
*, rtx_insn
*, poly_int64
);
4275 extern void init_expmed (void);
4276 extern void expand_inc (rtx
, rtx
);
4277 extern void expand_dec (rtx
, rtx
);
4279 /* In lower-subreg.cc */
4280 extern void init_lower_subreg (void);
4283 extern bool can_copy_p (machine_mode
);
4284 extern bool can_assign_to_reg_without_clobbers_p (rtx
, machine_mode
);
4285 extern rtx_insn
*prepare_copy_insn (rtx
, rtx
);
4288 extern rtx
fis_get_condition (rtx_insn
*);
4291 extern HARD_REG_SET eliminable_regset
;
4292 extern void mark_elimination (int, int);
4295 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
4296 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
4297 extern void globalize_reg (tree
, int);
4298 extern void init_reg_modes_target (void);
4299 extern void init_regs (void);
4300 extern void reinit_regs (void);
4301 extern void init_fake_stack_mems (void);
4302 extern void save_register_info (void);
4303 extern void init_reg_sets (void);
4304 extern void regclass (rtx
, int);
4305 extern void reg_scan (rtx_insn
*, unsigned int);
4306 extern void fix_register (const char *, int, int);
4307 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
4310 extern int function_invariant_p (const_rtx
);
4320 LCT_RETURNS_TWICE
= 5
4323 extern rtx
emit_library_call_value_1 (int, rtx
, rtx
, enum libcall_type
,
4324 machine_mode
, int, rtx_mode_t
*);
4326 /* Output a library call and discard the returned value. FUN is the
4327 address of the function, as a SYMBOL_REF rtx, and OUTMODE is the mode
4328 of the (discarded) return value. FN_TYPE is LCT_NORMAL for `normal'
4329 calls, LCT_CONST for `const' calls, LCT_PURE for `pure' calls, or
4330 another LCT_ value for other types of library calls.
4332 There are different overloads of this function for different numbers
4333 of arguments. In each case the argument value is followed by its mode. */
4336 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
)
4338 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 0, NULL
);
4342 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4343 rtx arg1
, machine_mode arg1_mode
)
4345 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
4346 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 1, args
);
4350 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4351 rtx arg1
, machine_mode arg1_mode
,
4352 rtx arg2
, machine_mode arg2_mode
)
4354 rtx_mode_t args
[] = {
4355 rtx_mode_t (arg1
, arg1_mode
),
4356 rtx_mode_t (arg2
, arg2_mode
)
4358 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 2, args
);
4362 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4363 rtx arg1
, machine_mode arg1_mode
,
4364 rtx arg2
, machine_mode arg2_mode
,
4365 rtx arg3
, machine_mode arg3_mode
)
4367 rtx_mode_t args
[] = {
4368 rtx_mode_t (arg1
, arg1_mode
),
4369 rtx_mode_t (arg2
, arg2_mode
),
4370 rtx_mode_t (arg3
, arg3_mode
)
4372 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 3, args
);
4376 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
4377 rtx arg1
, machine_mode arg1_mode
,
4378 rtx arg2
, machine_mode arg2_mode
,
4379 rtx arg3
, machine_mode arg3_mode
,
4380 rtx arg4
, machine_mode arg4_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
),
4386 rtx_mode_t (arg4
, arg4_mode
)
4388 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 4, args
);
4391 /* Like emit_library_call, but return the value produced by the call.
4392 Use VALUE to store the result if it is nonnull, otherwise pick a
4393 convenient location. */
4396 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4397 machine_mode outmode
)
4399 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 0, NULL
);
4403 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4404 machine_mode outmode
,
4405 rtx arg1
, machine_mode arg1_mode
)
4407 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
4408 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 1, args
);
4412 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4413 machine_mode outmode
,
4414 rtx arg1
, machine_mode arg1_mode
,
4415 rtx arg2
, machine_mode arg2_mode
)
4417 rtx_mode_t args
[] = {
4418 rtx_mode_t (arg1
, arg1_mode
),
4419 rtx_mode_t (arg2
, arg2_mode
)
4421 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 2, args
);
4425 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4426 machine_mode outmode
,
4427 rtx arg1
, machine_mode arg1_mode
,
4428 rtx arg2
, machine_mode arg2_mode
,
4429 rtx arg3
, machine_mode arg3_mode
)
4431 rtx_mode_t args
[] = {
4432 rtx_mode_t (arg1
, arg1_mode
),
4433 rtx_mode_t (arg2
, arg2_mode
),
4434 rtx_mode_t (arg3
, arg3_mode
)
4436 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 3, args
);
4440 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
4441 machine_mode outmode
,
4442 rtx arg1
, machine_mode arg1_mode
,
4443 rtx arg2
, machine_mode arg2_mode
,
4444 rtx arg3
, machine_mode arg3_mode
,
4445 rtx arg4
, machine_mode arg4_mode
)
4447 rtx_mode_t args
[] = {
4448 rtx_mode_t (arg1
, arg1_mode
),
4449 rtx_mode_t (arg2
, arg2_mode
),
4450 rtx_mode_t (arg3
, arg3_mode
),
4451 rtx_mode_t (arg4
, arg4_mode
)
4453 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 4, args
);
4457 extern void init_varasm_once (void);
4459 extern rtx
make_debug_expr_from_rtl (const_rtx
);
4461 /* In read-rtl.cc */
4462 #ifdef GENERATOR_FILE
4463 extern bool read_rtx (const char *, vec
<rtx
> *);
4467 extern rtx
canon_rtx (rtx
);
4468 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
4469 extern rtx
get_addr (rtx
);
4470 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
4472 extern int read_dependence (const_rtx
, const_rtx
);
4473 extern int anti_dependence (const_rtx
, const_rtx
);
4474 extern int canon_anti_dependence (const_rtx
, bool,
4475 const_rtx
, machine_mode
, rtx
);
4476 extern int output_dependence (const_rtx
, const_rtx
);
4477 extern int canon_output_dependence (const_rtx
, bool,
4478 const_rtx
, machine_mode
, rtx
);
4479 extern int may_alias_p (const_rtx
, const_rtx
);
4480 extern void init_alias_target (void);
4481 extern void init_alias_analysis (void);
4482 extern void end_alias_analysis (void);
4483 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
4484 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
4485 extern bool may_be_sp_based_p (rtx
);
4486 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
4487 extern rtx
get_reg_known_value (unsigned int);
4488 extern bool get_reg_known_equiv_p (unsigned int);
4489 extern rtx
get_reg_base_value (unsigned int);
4490 extern rtx
extract_mem_from_operand (rtx
);
4493 extern int stack_regs_mentioned (const_rtx insn
);
4497 extern GTY(()) rtx stack_limit_rtx
;
4499 /* In var-tracking.cc */
4500 extern unsigned int variable_tracking_main (void);
4501 extern void delete_vta_debug_insns (bool);
4503 /* In stor-layout.cc. */
4504 extern void get_mode_bounds (scalar_int_mode
, int,
4505 scalar_int_mode
, rtx
*, rtx
*);
4508 extern rtx
canon_condition (rtx
);
4509 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
4512 extern unsigned int compute_alignments (void);
4513 extern void update_alignments (vec
<rtx
> &);
4514 extern int asm_str_count (const char *templ
);
4518 rtx (*gen_lowpart
) (machine_mode
, rtx
);
4519 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
4520 rtx (*reg_nonzero_bits
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4521 unsigned HOST_WIDE_INT
*);
4522 rtx (*reg_num_sign_bit_copies
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4524 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
4526 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
4529 /* Each pass can provide its own. */
4530 extern struct rtl_hooks rtl_hooks
;
4532 /* ... but then it has to restore these. */
4533 extern const struct rtl_hooks general_rtl_hooks
;
4535 /* Keep this for the nonce. */
4536 #define gen_lowpart rtl_hooks.gen_lowpart
4538 extern void insn_locations_init (void);
4539 extern void insn_locations_finalize (void);
4540 extern void set_curr_insn_location (location_t
);
4541 extern location_t
curr_insn_location (void);
4542 extern void set_insn_locations (rtx_insn
*, location_t
);
4545 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
4546 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4547 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
4548 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4550 #define fatal_insn(msgid, insn) \
4551 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
4552 #define fatal_insn_not_found(insn) \
4553 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
4556 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
4558 /* Information about the function that is propagated by the RTL backend.
4559 Available only for functions that has been already assembled. */
4561 struct GTY(()) cgraph_rtl_info
{
4562 unsigned int preferred_incoming_stack_boundary
;
4564 /* Which registers the function clobbers, either directly or by
4565 calling another function. */
4566 HARD_REG_SET function_used_regs
;
4569 /* If loads from memories of mode MODE always sign or zero extend,
4570 return SIGN_EXTEND or ZERO_EXTEND as appropriate. Return UNKNOWN
4574 load_extend_op (machine_mode mode
)
4576 scalar_int_mode int_mode
;
4577 if (is_a
<scalar_int_mode
> (mode
, &int_mode
)
4578 && GET_MODE_PRECISION (int_mode
) < BITS_PER_WORD
)
4579 return LOAD_EXTEND_OP (int_mode
);
4583 /* If X is a PLUS of a base and a constant offset, add the constant to *OFFSET
4584 and return the base. Return X otherwise. */
4587 strip_offset_and_add (rtx x
, poly_int64_pod
*offset
)
4589 if (GET_CODE (x
) == PLUS
)
4591 poly_int64 suboffset
;
4592 x
= strip_offset (x
, &suboffset
);
4593 *offset
= poly_uint64 (*offset
) + suboffset
;
4598 /* Return true if X is an operation that always operates on the full
4599 registers for WORD_REGISTER_OPERATIONS architectures. */
4602 word_register_operation_p (const_rtx x
)
4604 switch (GET_CODE (x
))
4618 /* Holds an rtx comparison to simplify passing many parameters pertaining to a
4619 single comparison. */
4621 struct rtx_comparison
{
4627 /* gtype-desc.cc. */
4628 extern void gt_ggc_mx (rtx
&);
4629 extern void gt_pch_nx (rtx
&);
4630 extern void gt_pch_nx (rtx
&, gt_pointer_operator
, void *);
4632 #endif /* ! GCC_RTL_H */