1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2017 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 /* Value used by some passes to "recognize" noop moves as valid
41 #define NOOP_MOVE_INSN_CODE INT_MAX
43 /* Register Transfer Language EXPRESSIONS CODES */
45 #define RTX_CODE enum rtx_code
48 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
49 #include "rtl.def" /* rtl expressions are documented here */
52 LAST_AND_UNUSED_RTX_CODE
}; /* A convenient way to get a value for
54 Assumes default enum value assignment. */
56 /* The cast here, saves many elsewhere. */
57 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
59 /* Similar, but since generator files get more entries... */
61 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
64 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
67 /* We check bit 0-1 of some rtx class codes in the predicates below. */
69 /* Bit 0 = comparison if 0, arithmetic is 1
70 Bit 1 = 1 if commutative. */
76 /* Must follow the four preceding values. */
83 /* Bit 0 = 1 if constant. */
92 #define RTX_OBJ_MASK (~1)
93 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
94 #define RTX_COMPARE_MASK (~1)
95 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
96 #define RTX_ARITHMETIC_MASK (~1)
97 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
98 #define RTX_BINARY_MASK (~3)
99 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
100 #define RTX_COMMUTATIVE_MASK (~2)
101 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
102 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
104 extern const unsigned char rtx_length
[NUM_RTX_CODE
];
105 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
107 extern const char * const rtx_name
[NUM_RTX_CODE
];
108 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
110 extern const char * const rtx_format
[NUM_RTX_CODE
];
111 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
113 extern const enum rtx_class rtx_class
[NUM_RTX_CODE
];
114 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
116 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
117 and NEXT_INSN fields). */
118 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
120 extern const unsigned char rtx_code_size
[NUM_RTX_CODE
];
121 extern const unsigned char rtx_next
[NUM_RTX_CODE
];
123 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
124 relative to which the offsets are calculated, as explained in rtl.def. */
125 struct addr_diff_vec_flags
127 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
128 unsigned min_align
: 8;
130 unsigned base_after_vec
: 1; /* BASE is after the ADDR_DIFF_VEC. */
131 unsigned min_after_vec
: 1; /* minimum address target label is
132 after the ADDR_DIFF_VEC. */
133 unsigned max_after_vec
: 1; /* maximum address target label is
134 after the ADDR_DIFF_VEC. */
135 unsigned min_after_base
: 1; /* minimum address target label is
137 unsigned max_after_base
: 1; /* maximum address target label is
139 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
140 unsigned offset_unsigned
: 1; /* offsets have to be treated as unsigned. */
145 /* Structure used to describe the attributes of a MEM. These are hashed
146 so MEMs that the same attributes share a data structure. This means
147 they cannot be modified in place. */
148 struct GTY(()) mem_attrs
150 /* The expression that the MEM accesses, or null if not known.
151 This expression might be larger than the memory reference itself.
152 (In other words, the MEM might access only part of the object.) */
155 /* The offset of the memory reference from the start of EXPR.
156 Only valid if OFFSET_KNOWN_P. */
157 HOST_WIDE_INT offset
;
159 /* The size of the memory reference in bytes. Only valid if
163 /* The alias set of the memory reference. */
164 alias_set_type alias
;
166 /* The alignment of the reference in bits. Always a multiple of
167 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
168 than the memory reference itself. */
171 /* The address space that the memory reference uses. */
172 unsigned char addrspace
;
174 /* True if OFFSET is known. */
177 /* True if SIZE is known. */
181 /* Structure used to describe the attributes of a REG in similar way as
182 mem_attrs does for MEM above. Note that the OFFSET field is calculated
183 in the same way as for mem_attrs, rather than in the same way as a
184 SUBREG_BYTE. For example, if a big-endian target stores a byte
185 object in the low part of a 4-byte register, the OFFSET field
186 will be -3 rather than 0. */
188 struct GTY((for_user
)) reg_attrs
{
189 tree decl
; /* decl corresponding to REG. */
190 HOST_WIDE_INT offset
; /* Offset from start of DECL. */
193 /* Common union for an element of an rtx. */
198 unsigned int rt_uint
;
202 machine_mode rt_type
;
203 addr_diff_vec_flags rt_addr_diff_vec_flags
;
204 struct cselib_val
*rt_cselib
;
208 struct constant_descriptor_rtx
*rt_constant
;
209 struct dw_cfi_node
*rt_cfi
;
212 /* Describes the properties of a REG. */
213 struct GTY(()) reg_info
{
214 /* The value of REGNO. */
217 /* The value of REG_NREGS. */
218 unsigned int nregs
: 8;
219 unsigned int unused
: 24;
221 /* The value of REG_ATTRS. */
225 /* This structure remembers the position of a SYMBOL_REF within an
226 object_block structure. A SYMBOL_REF only provides this information
227 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
228 struct GTY(()) block_symbol
{
229 /* The usual SYMBOL_REF fields. */
230 rtunion
GTY ((skip
)) fld
[2];
232 /* The block that contains this object. */
233 struct object_block
*block
;
235 /* The offset of this object from the start of its block. It is negative
236 if the symbol has not yet been assigned an offset. */
237 HOST_WIDE_INT offset
;
240 /* Describes a group of objects that are to be placed together in such
241 a way that their relative positions are known. */
242 struct GTY((for_user
)) object_block
{
243 /* The section in which these objects should be placed. */
246 /* The alignment of the first object, measured in bits. */
247 unsigned int alignment
;
249 /* The total size of the objects, measured in bytes. */
252 /* The SYMBOL_REFs for each object. The vector is sorted in
253 order of increasing offset and the following conditions will
254 hold for each element X:
256 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
257 !SYMBOL_REF_ANCHOR_P (X)
258 SYMBOL_REF_BLOCK (X) == [address of this structure]
259 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
260 vec
<rtx
, va_gc
> *objects
;
262 /* All the anchor SYMBOL_REFs used to address these objects, sorted
263 in order of increasing offset, and then increasing TLS model.
264 The following conditions will hold for each element X in this vector:
266 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
267 SYMBOL_REF_ANCHOR_P (X)
268 SYMBOL_REF_BLOCK (X) == [address of this structure]
269 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
270 vec
<rtx
, va_gc
> *anchors
;
273 struct GTY((variable_size
)) hwivec_def
{
274 HOST_WIDE_INT elem
[1];
277 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
278 #define CWI_GET_NUM_ELEM(RTX) \
279 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
280 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
281 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
283 /* RTL expression ("rtx"). */
285 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
286 field for gengtype to recognize that inheritance is occurring,
287 so that all subclasses are redirected to the traversal hook for the
289 However, all of the fields are in the base class, and special-casing
290 is at work. Hence we use desc and tag of 0, generating a switch
291 statement of the form:
294 case 0: // all the work happens here
296 in order to work with the existing special-casing in gengtype. */
298 struct GTY((desc("0"), tag("0"),
299 chain_next ("RTX_NEXT (&%h)"),
300 chain_prev ("RTX_PREV (&%h)"))) rtx_def
{
301 /* The kind of expression this is. */
302 ENUM_BITFIELD(rtx_code
) code
: 16;
304 /* The kind of value the expression has. */
305 ENUM_BITFIELD(machine_mode
) mode
: 8;
307 /* 1 in a MEM if we should keep the alias set for this mem unchanged
308 when we access a component.
309 1 in a JUMP_INSN if it is a crossing jump.
310 1 in a CALL_INSN if it is a sibling call.
311 1 in a SET that is for a return.
312 In a CODE_LABEL, part of the two-bit alternate entry field.
313 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
314 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
315 1 in a SUBREG generated by LRA for reload insns.
316 1 in a REG if this is a static chain register.
317 1 in a CALL for calls instrumented by Pointer Bounds Checker.
318 Dumped as "/j" in RTL dumps. */
319 unsigned int jump
: 1;
320 /* In a CODE_LABEL, part of the two-bit alternate entry field.
321 1 in a MEM if it cannot trap.
322 1 in a CALL_INSN logically equivalent to
323 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P.
324 Dumped as "/c" in RTL dumps. */
325 unsigned int call
: 1;
326 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
327 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
328 1 in a SYMBOL_REF if it addresses something in the per-function
330 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
331 1 in a NOTE, or EXPR_LIST for a const call.
332 1 in a JUMP_INSN of an annulling branch.
333 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
334 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
335 1 in a clobber temporarily created for LRA.
336 Dumped as "/u" in RTL dumps. */
337 unsigned int unchanging
: 1;
338 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
339 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
340 if it has been deleted.
341 1 in a REG expression if corresponds to a variable declared by the user,
342 0 for an internally generated temporary.
343 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
344 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
346 In a SYMBOL_REF, this flag is used for machine-specific purposes.
347 In a PREFETCH, this flag indicates that it should be considered a
349 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c.
350 Dumped as "/v" in RTL dumps. */
351 unsigned int volatil
: 1;
352 /* 1 in a REG if the register is used only in exit code a loop.
353 1 in a SUBREG expression if was generated from a variable with a
355 1 in a CODE_LABEL if the label is used for nonlocal gotos
356 and must not be deleted even if its count is zero.
357 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
358 together with the preceding insn. Valid only within sched.
359 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
360 from the target of a branch. Valid from reorg until end of compilation;
363 The name of the field is historical. It used to be used in MEMs
364 to record whether the MEM accessed part of a structure.
365 Dumped as "/s" in RTL dumps. */
366 unsigned int in_struct
: 1;
367 /* At the end of RTL generation, 1 if this rtx is used. This is used for
368 copying shared structure. See `unshare_all_rtl'.
369 In a REG, this is not needed for that purpose, and used instead
370 in `leaf_renumber_regs_insn'.
371 1 in a SYMBOL_REF, means that emit_library_call
372 has used it as the function.
373 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
374 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
375 unsigned int used
: 1;
376 /* 1 in an INSN or a SET if this rtx is related to the call frame,
377 either changing how we compute the frame address or saving and
378 restoring registers in the prologue and epilogue.
379 1 in a REG or MEM if it is a pointer.
380 1 in a SYMBOL_REF if it addresses something in the per-function
381 constant string pool.
382 1 in a VALUE is VALUE_CHANGED in var-tracking.c.
383 Dumped as "/f" in RTL dumps. */
384 unsigned frame_related
: 1;
385 /* 1 in a REG or PARALLEL that is the current function's return value.
386 1 in a SYMBOL_REF for a weak symbol.
387 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
388 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
389 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c.
390 Dumped as "/i" in RTL dumps. */
391 unsigned return_val
: 1;
394 /* The final union field is aligned to 64 bits on LP64 hosts,
395 giving a 32-bit gap after the fields above. We optimize the
396 layout for that case and use the gap for extra code-specific
399 /* The ORIGINAL_REGNO of a REG. */
400 unsigned int original_regno
;
402 /* The INSN_UID of an RTX_INSN-class code. */
405 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
406 unsigned int symbol_ref_flags
;
408 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
409 enum var_init_status var_location_status
;
411 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
412 HOST_WIDE_INTs in the hwivec_def. */
413 unsigned int num_elem
;
416 /* The first element of the operands of this rtx.
417 The number of operands and their types are controlled
418 by the `code' field, according to rtl.def. */
421 HOST_WIDE_INT hwint
[1];
423 struct block_symbol block_sym
;
424 struct real_value rv
;
425 struct fixed_value fv
;
426 struct hwivec_def hwiv
;
427 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u
;
430 /* A node for constructing singly-linked lists of rtx. */
432 class GTY(()) rtx_expr_list
: public rtx_def
434 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
437 /* Get next in list. */
438 rtx_expr_list
*next () const;
440 /* Get at the underlying rtx. */
441 rtx
element () const;
447 is_a_helper
<rtx_expr_list
*>::test (rtx rt
)
449 return rt
->code
== EXPR_LIST
;
452 class GTY(()) rtx_insn_list
: public rtx_def
454 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
456 This is an instance of:
458 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
460 i.e. a node for constructing singly-linked lists of rtx_insn *, where
461 the list is "external" to the insn (as opposed to the doubly-linked
462 list embedded within rtx_insn itself). */
465 /* Get next in list. */
466 rtx_insn_list
*next () const;
468 /* Get at the underlying instruction. */
469 rtx_insn
*insn () const;
476 is_a_helper
<rtx_insn_list
*>::test (rtx rt
)
478 return rt
->code
== INSN_LIST
;
481 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
482 typically (but not always) of rtx_insn *, used in the late passes. */
484 class GTY(()) rtx_sequence
: public rtx_def
486 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
489 /* Get number of elements in sequence. */
492 /* Get i-th element of the sequence. */
493 rtx
element (int index
) const;
495 /* Get i-th element of the sequence, with a checked cast to
497 rtx_insn
*insn (int index
) const;
503 is_a_helper
<rtx_sequence
*>::test (rtx rt
)
505 return rt
->code
== SEQUENCE
;
511 is_a_helper
<const rtx_sequence
*>::test (const_rtx rt
)
513 return rt
->code
== SEQUENCE
;
516 class GTY(()) rtx_insn
: public rtx_def
519 /* No extra fields, but adds the invariant:
523 || JUMP_TABLE_DATA_P (X)
527 i.e. that we must be able to use the following:
531 i.e. we have an rtx that has an INSN_UID field and can be part of
532 a linked list of insns.
535 /* Returns true if this insn has been deleted. */
537 bool deleted () const { return volatil
; }
539 /* Mark this insn as deleted. */
541 void set_deleted () { volatil
= true; }
543 /* Mark this insn as not deleted. */
545 void set_undeleted () { volatil
= false; }
548 /* Subclasses of rtx_insn. */
550 class GTY(()) rtx_debug_insn
: public rtx_insn
552 /* No extra fields, but adds the invariant:
553 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
554 i.e. an annotation for tracking variable assignments.
556 This is an instance of:
557 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
561 class GTY(()) rtx_nonjump_insn
: public rtx_insn
563 /* No extra fields, but adds the invariant:
564 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
565 i.e an instruction that cannot jump.
567 This is an instance of:
568 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
572 class GTY(()) rtx_jump_insn
: public rtx_insn
575 /* No extra fields, but adds the invariant:
576 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
577 i.e. an instruction that can possibly jump.
579 This is an instance of:
580 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
583 /* Returns jump target of this instruction. The returned value is not
584 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
585 expression. Also, when the code label is marked "deleted", it is
586 replaced by a NOTE. In some cases the value is NULL_RTX. */
588 inline rtx
jump_label () const;
590 /* Returns jump target cast to rtx_code_label *. */
592 inline rtx_code_label
*jump_target () const;
594 /* Set jump target. */
596 inline void set_jump_target (rtx_code_label
*);
599 class GTY(()) rtx_call_insn
: public rtx_insn
601 /* No extra fields, but adds the invariant:
602 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
603 i.e. an instruction that can possibly call a subroutine
604 but which will not change which instruction comes next
605 in the current function.
607 This is an instance of:
608 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
612 class GTY(()) rtx_jump_table_data
: public rtx_insn
614 /* No extra fields, but adds the invariant:
615 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
616 i.e. a data for a jump table, considered an instruction for
619 This is an instance of:
620 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
625 /* This can be either:
627 (a) a table of absolute jumps, in which case PATTERN (this) is an
628 ADDR_VEC with arg 0 a vector of labels, or
630 (b) a table of relative jumps (e.g. for -fPIC), in which case
631 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
632 arg 1 the vector of labels.
634 This method gets the underlying vec. */
636 inline rtvec
get_labels () const;
637 inline scalar_int_mode
get_data_mode () const;
640 class GTY(()) rtx_barrier
: public rtx_insn
642 /* No extra fields, but adds the invariant:
643 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
644 i.e. a marker that indicates that control will not flow through.
646 This is an instance of:
647 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
651 class GTY(()) rtx_code_label
: public rtx_insn
653 /* No extra fields, but adds the invariant:
654 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
655 i.e. a label in the assembler.
657 This is an instance of:
658 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
662 class GTY(()) rtx_note
: public rtx_insn
664 /* No extra fields, but adds the invariant:
665 NOTE_P(X) aka (GET_CODE (X) == NOTE)
666 i.e. a note about the corresponding source code.
668 This is an instance of:
669 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
673 /* The size in bytes of an rtx header (code, mode and flags). */
674 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
676 /* The size in bytes of an rtx with code CODE. */
677 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
679 #define NULL_RTX (rtx) 0
681 /* The "next" and "previous" RTX, relative to this one. */
683 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
684 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
686 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
688 #define RTX_PREV(X) ((INSN_P (X) \
690 || JUMP_TABLE_DATA_P (X) \
693 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
694 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
695 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
697 /* Define macros to access the `code' field of the rtx. */
699 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
700 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
702 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
703 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
705 /* RTL vector. These appear inside RTX's when there is a need
706 for a variable number of things. The principle use is inside
707 PARALLEL expressions. */
709 struct GTY(()) rtvec_def
{
710 int num_elem
; /* number of elements */
711 rtx
GTY ((length ("%h.num_elem"))) elem
[1];
714 #define NULL_RTVEC (rtvec) 0
716 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
717 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
719 /* Predicate yielding nonzero iff X is an rtx for a register. */
720 #define REG_P(X) (GET_CODE (X) == REG)
722 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
723 #define MEM_P(X) (GET_CODE (X) == MEM)
725 #if TARGET_SUPPORTS_WIDE_INT
727 /* Match CONST_*s that can represent compile-time constant integers. */
728 #define CASE_CONST_SCALAR_INT \
732 /* Match CONST_*s for which pointer equality corresponds to value
734 #define CASE_CONST_UNIQUE \
736 case CONST_WIDE_INT: \
740 /* Match all CONST_* rtxes. */
741 #define CASE_CONST_ANY \
743 case CONST_WIDE_INT: \
750 /* Match CONST_*s that can represent compile-time constant integers. */
751 #define CASE_CONST_SCALAR_INT \
755 /* Match CONST_*s for which pointer equality corresponds to value
757 #define CASE_CONST_UNIQUE \
762 /* Match all CONST_* rtxes. */
763 #define CASE_CONST_ANY \
770 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
771 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
773 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
774 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
776 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
777 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
779 /* Predicate yielding true iff X is an rtx for a double-int
780 or floating point constant. */
781 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
783 /* Predicate yielding true iff X is an rtx for a double-int. */
784 #define CONST_DOUBLE_AS_INT_P(X) \
785 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
787 /* Predicate yielding true iff X is an rtx for a integer const. */
788 #if TARGET_SUPPORTS_WIDE_INT
789 #define CONST_SCALAR_INT_P(X) \
790 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
792 #define CONST_SCALAR_INT_P(X) \
793 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
796 /* Predicate yielding true iff X is an rtx for a double-int. */
797 #define CONST_DOUBLE_AS_FLOAT_P(X) \
798 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
800 /* Predicate yielding nonzero iff X is a label insn. */
801 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
803 /* Predicate yielding nonzero iff X is a jump insn. */
804 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
806 /* Predicate yielding nonzero iff X is a call insn. */
807 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
809 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
810 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
812 /* Predicate yielding nonzero iff X is a debug note/insn. */
813 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
815 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
816 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
818 /* Nonzero if DEBUG_INSN_P may possibly hold. */
819 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
821 /* Predicate yielding nonzero iff X is a real insn. */
823 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
825 /* Predicate yielding nonzero iff X is a note insn. */
826 #define NOTE_P(X) (GET_CODE (X) == NOTE)
828 /* Predicate yielding nonzero iff X is a barrier insn. */
829 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
831 /* Predicate yielding nonzero iff X is a data for a jump table. */
832 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
834 /* Predicate yielding nonzero iff RTX is a subreg. */
835 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
837 /* Predicate yielding true iff RTX is a symbol ref. */
838 #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
843 is_a_helper
<rtx_insn
*>::test (rtx rt
)
847 || JUMP_TABLE_DATA_P (rt
)
855 is_a_helper
<const rtx_insn
*>::test (const_rtx rt
)
859 || JUMP_TABLE_DATA_P (rt
)
867 is_a_helper
<rtx_debug_insn
*>::test (rtx rt
)
869 return DEBUG_INSN_P (rt
);
875 is_a_helper
<rtx_nonjump_insn
*>::test (rtx rt
)
877 return NONJUMP_INSN_P (rt
);
883 is_a_helper
<rtx_jump_insn
*>::test (rtx rt
)
891 is_a_helper
<rtx_jump_insn
*>::test (rtx_insn
*insn
)
893 return JUMP_P (insn
);
899 is_a_helper
<rtx_call_insn
*>::test (rtx rt
)
907 is_a_helper
<rtx_call_insn
*>::test (rtx_insn
*insn
)
909 return CALL_P (insn
);
915 is_a_helper
<rtx_jump_table_data
*>::test (rtx rt
)
917 return JUMP_TABLE_DATA_P (rt
);
923 is_a_helper
<rtx_jump_table_data
*>::test (rtx_insn
*insn
)
925 return JUMP_TABLE_DATA_P (insn
);
931 is_a_helper
<rtx_barrier
*>::test (rtx rt
)
933 return BARRIER_P (rt
);
939 is_a_helper
<rtx_code_label
*>::test (rtx rt
)
947 is_a_helper
<rtx_code_label
*>::test (rtx_insn
*insn
)
949 return LABEL_P (insn
);
955 is_a_helper
<rtx_note
*>::test (rtx rt
)
963 is_a_helper
<rtx_note
*>::test (rtx_insn
*insn
)
965 return NOTE_P (insn
);
968 /* Predicate yielding nonzero iff X is a return or simple_return. */
969 #define ANY_RETURN_P(X) \
970 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
972 /* 1 if X is a unary operator. */
975 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
977 /* 1 if X is a binary operator. */
979 #define BINARY_P(X) \
980 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
982 /* 1 if X is an arithmetic operator. */
984 #define ARITHMETIC_P(X) \
985 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
986 == RTX_ARITHMETIC_RESULT)
988 /* 1 if X is an arithmetic operator. */
990 #define COMMUTATIVE_ARITH_P(X) \
991 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
993 /* 1 if X is a commutative arithmetic operator or a comparison operator.
994 These two are sometimes selected together because it is possible to
995 swap the two operands. */
997 #define SWAPPABLE_OPERANDS_P(X) \
998 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
999 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
1000 | (1 << RTX_COMPARE)))
1002 /* 1 if X is a non-commutative operator. */
1004 #define NON_COMMUTATIVE_P(X) \
1005 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1006 == RTX_NON_COMMUTATIVE_RESULT)
1008 /* 1 if X is a commutative operator on integers. */
1010 #define COMMUTATIVE_P(X) \
1011 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1012 == RTX_COMMUTATIVE_RESULT)
1014 /* 1 if X is a relational operator. */
1016 #define COMPARISON_P(X) \
1017 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1019 /* 1 if X is a constant value that is an integer. */
1021 #define CONSTANT_P(X) \
1022 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1024 /* 1 if X can be used to represent an object. */
1025 #define OBJECT_P(X) \
1026 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1028 /* General accessor macros for accessing the fields of an rtx. */
1030 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1031 /* The bit with a star outside the statement expr and an & inside is
1032 so that N can be evaluated only once. */
1033 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1034 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1035 const enum rtx_code _code = GET_CODE (_rtx); \
1036 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1037 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1039 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1040 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1042 &_rtx->u.fld[_n]; }))
1044 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1045 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1046 const enum rtx_code _code = GET_CODE (_rtx); \
1047 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1048 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1050 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1051 && GET_RTX_FORMAT (_code)[_n] != C2) \
1052 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1054 &_rtx->u.fld[_n]; }))
1056 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1057 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1058 if (GET_CODE (_rtx) != (C)) \
1059 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1061 &_rtx->u.fld[_n]; }))
1063 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1064 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1065 const enum rtx_code _code = GET_CODE (_rtx); \
1066 if (_code != (C1) && _code != (C2)) \
1067 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1069 &_rtx->u.fld[_n]; }))
1071 #define RTVEC_ELT(RTVEC, I) __extension__ \
1072 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1073 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1074 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1076 &_rtvec->elem[_i]; }))
1078 #define XWINT(RTX, N) __extension__ \
1079 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1080 const enum rtx_code _code = GET_CODE (_rtx); \
1081 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1082 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1084 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1085 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1087 &_rtx->u.hwint[_n]; }))
1089 #define CWI_ELT(RTX, I) __extension__ \
1090 (*({ __typeof (RTX) const _cwi = (RTX); \
1091 int _max = CWI_GET_NUM_ELEM (_cwi); \
1092 const int _i = (I); \
1093 if (_i < 0 || _i >= _max) \
1094 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1096 &_cwi->u.hwiv.elem[_i]; }))
1098 #define XCWINT(RTX, N, C) __extension__ \
1099 (*({ __typeof (RTX) const _rtx = (RTX); \
1100 if (GET_CODE (_rtx) != (C)) \
1101 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1103 &_rtx->u.hwint[N]; }))
1105 #define XCMWINT(RTX, N, C, M) __extension__ \
1106 (*({ __typeof (RTX) const _rtx = (RTX); \
1107 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1108 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1109 __LINE__, __FUNCTION__); \
1110 &_rtx->u.hwint[N]; }))
1112 #define XCNMPRV(RTX, C, M) __extension__ \
1113 ({ __typeof (RTX) const _rtx = (RTX); \
1114 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1115 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1116 __LINE__, __FUNCTION__); \
1119 #define XCNMPFV(RTX, C, M) __extension__ \
1120 ({ __typeof (RTX) const _rtx = (RTX); \
1121 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1122 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1123 __LINE__, __FUNCTION__); \
1126 #define REG_CHECK(RTX) __extension__ \
1127 ({ __typeof (RTX) const _rtx = (RTX); \
1128 if (GET_CODE (_rtx) != REG) \
1129 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1133 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1134 ({ __typeof (RTX) const _symbol = (RTX); \
1135 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1136 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1137 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1139 &_symbol->u.block_sym; })
1141 #define HWIVEC_CHECK(RTX,C) __extension__ \
1142 ({ __typeof (RTX) const _symbol = (RTX); \
1143 RTL_CHECKC1 (_symbol, 0, C); \
1144 &_symbol->u.hwiv; })
1146 extern void rtl_check_failed_bounds (const_rtx
, int, const char *, int,
1148 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1149 extern void rtl_check_failed_type1 (const_rtx
, int, int, const char *, int,
1151 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1152 extern void rtl_check_failed_type2 (const_rtx
, int, int, int, const char *,
1154 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1155 extern void rtl_check_failed_code1 (const_rtx
, enum rtx_code
, const char *,
1157 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1158 extern void rtl_check_failed_code2 (const_rtx
, enum rtx_code
, enum rtx_code
,
1159 const char *, int, const char *)
1160 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1161 extern void rtl_check_failed_code_mode (const_rtx
, enum rtx_code
, machine_mode
,
1162 bool, const char *, int, const char *)
1163 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1164 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1165 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1166 extern void cwi_check_failed_bounds (const_rtx
, int, const char *, int,
1168 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1169 extern void rtvec_check_failed_bounds (const_rtvec
, int, const char *, int,
1171 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
1173 #else /* not ENABLE_RTL_CHECKING */
1175 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1176 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1177 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1178 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1179 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1180 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1181 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1182 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1183 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1184 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1185 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1186 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1187 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1188 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1189 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1193 /* General accessor macros for accessing the flags of an rtx. */
1195 /* Access an individual rtx flag, with no checking of any kind. */
1196 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1198 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1199 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1200 ({ __typeof (RTX) const _rtx = (RTX); \
1201 if (GET_CODE (_rtx) != C1) \
1202 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1206 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1207 ({ __typeof (RTX) const _rtx = (RTX); \
1208 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1209 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1213 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1214 ({ __typeof (RTX) const _rtx = (RTX); \
1215 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1216 && GET_CODE (_rtx) != C3) \
1217 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1221 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1222 ({ __typeof (RTX) const _rtx = (RTX); \
1223 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1224 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1225 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1229 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1230 ({ __typeof (RTX) const _rtx = (RTX); \
1231 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1232 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1233 && GET_CODE (_rtx) != C5) \
1234 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1238 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1240 ({ __typeof (RTX) const _rtx = (RTX); \
1241 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1242 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1243 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1244 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1248 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1250 ({ __typeof (RTX) const _rtx = (RTX); \
1251 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1252 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1253 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1254 && GET_CODE (_rtx) != C7) \
1255 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1259 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1261 ({ __typeof (RTX) const _rtx = (RTX); \
1262 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1263 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1267 extern void rtl_check_failed_flag (const char *, const_rtx
, const char *,
1269 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
1272 #else /* not ENABLE_RTL_FLAG_CHECKING */
1274 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1275 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1276 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1277 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1278 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1279 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1280 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1281 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1284 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1285 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1286 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1287 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1288 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1289 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1290 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1291 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1292 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1293 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1295 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1296 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1298 /* These are like XINT, etc. except that they expect a '0' field instead
1299 of the normal type code. */
1301 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1302 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1303 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1304 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1305 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1306 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1307 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1308 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1309 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1310 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1311 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1312 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1314 /* Access a '0' field with any type. */
1315 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1317 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1318 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1319 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1320 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1321 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1322 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1323 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1324 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1325 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1326 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1328 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1329 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1331 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1334 /* Methods of rtx_expr_list. */
1336 inline rtx_expr_list
*rtx_expr_list::next () const
1338 rtx tmp
= XEXP (this, 1);
1339 return safe_as_a
<rtx_expr_list
*> (tmp
);
1342 inline rtx
rtx_expr_list::element () const
1344 return XEXP (this, 0);
1347 /* Methods of rtx_insn_list. */
1349 inline rtx_insn_list
*rtx_insn_list::next () const
1351 rtx tmp
= XEXP (this, 1);
1352 return safe_as_a
<rtx_insn_list
*> (tmp
);
1355 inline rtx_insn
*rtx_insn_list::insn () const
1357 rtx tmp
= XEXP (this, 0);
1358 return safe_as_a
<rtx_insn
*> (tmp
);
1361 /* Methods of rtx_sequence. */
1363 inline int rtx_sequence::len () const
1365 return XVECLEN (this, 0);
1368 inline rtx
rtx_sequence::element (int index
) const
1370 return XVECEXP (this, 0, index
);
1373 inline rtx_insn
*rtx_sequence::insn (int index
) const
1375 return as_a
<rtx_insn
*> (XVECEXP (this, 0, index
));
1378 /* ACCESS MACROS for particular fields of insns. */
1380 /* Holds a unique number for each insn.
1381 These are not necessarily sequentially increasing. */
1382 inline int INSN_UID (const_rtx insn
)
1384 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1385 (insn
))->u2
.insn_uid
;
1387 inline int& INSN_UID (rtx insn
)
1389 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1390 (insn
))->u2
.insn_uid
;
1393 /* Chain insns together in sequence. */
1395 /* For now these are split in two: an rvalue form:
1398 SET_NEXT_INSN/SET_PREV_INSN. */
1400 inline rtx_insn
*PREV_INSN (const rtx_insn
*insn
)
1402 rtx prev
= XEXP (insn
, 0);
1403 return safe_as_a
<rtx_insn
*> (prev
);
1406 inline rtx
& SET_PREV_INSN (rtx_insn
*insn
)
1408 return XEXP (insn
, 0);
1411 inline rtx_insn
*NEXT_INSN (const rtx_insn
*insn
)
1413 rtx next
= XEXP (insn
, 1);
1414 return safe_as_a
<rtx_insn
*> (next
);
1417 inline rtx
& SET_NEXT_INSN (rtx_insn
*insn
)
1419 return XEXP (insn
, 1);
1422 inline basic_block
BLOCK_FOR_INSN (const_rtx insn
)
1424 return XBBDEF (insn
, 2);
1427 inline basic_block
& BLOCK_FOR_INSN (rtx insn
)
1429 return XBBDEF (insn
, 2);
1432 inline void set_block_for_insn (rtx_insn
*insn
, basic_block bb
)
1434 BLOCK_FOR_INSN (insn
) = bb
;
1437 /* The body of an insn. */
1438 inline rtx
PATTERN (const_rtx insn
)
1440 return XEXP (insn
, 3);
1443 inline rtx
& PATTERN (rtx insn
)
1445 return XEXP (insn
, 3);
1448 inline unsigned int INSN_LOCATION (const rtx_insn
*insn
)
1450 return XUINT (insn
, 4);
1453 inline unsigned int& INSN_LOCATION (rtx_insn
*insn
)
1455 return XUINT (insn
, 4);
1458 inline bool INSN_HAS_LOCATION (const rtx_insn
*insn
)
1460 return LOCATION_LOCUS (INSN_LOCATION (insn
)) != UNKNOWN_LOCATION
;
1463 /* LOCATION of an RTX if relevant. */
1464 #define RTL_LOCATION(X) (INSN_P (X) ? \
1465 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1468 /* Code number of instruction, from when it was recognized.
1469 -1 means this instruction has not been recognized yet. */
1470 #define INSN_CODE(INSN) XINT (INSN, 5)
1472 inline rtvec
rtx_jump_table_data::get_labels () const
1474 rtx pat
= PATTERN (this);
1475 if (GET_CODE (pat
) == ADDR_VEC
)
1476 return XVEC (pat
, 0);
1478 return XVEC (pat
, 1); /* presumably an ADDR_DIFF_VEC */
1481 /* Return the mode of the data in the table, which is always a scalar
1484 inline scalar_int_mode
1485 rtx_jump_table_data::get_data_mode () const
1487 return as_a
<scalar_int_mode
> (GET_MODE (PATTERN (this)));
1490 /* If LABEL is followed by a jump table, return the table, otherwise
1493 inline rtx_jump_table_data
*
1494 jump_table_for_label (const rtx_code_label
*label
)
1496 return safe_dyn_cast
<rtx_jump_table_data
*> (NEXT_INSN (label
));
1499 #define RTX_FRAME_RELATED_P(RTX) \
1500 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1501 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1503 /* 1 if JUMP RTX is a crossing jump. */
1504 #define CROSSING_JUMP_P(RTX) \
1505 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1507 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1509 #define RTL_CONST_CALL_P(RTX) \
1510 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1512 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1514 #define RTL_PURE_CALL_P(RTX) \
1515 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1517 /* 1 if RTX is a call to a const or pure function. */
1518 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1519 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1521 /* 1 if RTX is a call to a looping const or pure function. Built from
1522 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1523 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1524 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1526 /* 1 if RTX is a call_insn for a sibling call. */
1527 #define SIBLING_CALL_P(RTX) \
1528 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1530 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1531 #define INSN_ANNULLED_BRANCH_P(RTX) \
1532 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1534 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1535 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1536 executed if the branch is taken. For annulled branches with this bit
1537 clear, the insn should be executed only if the branch is not taken. */
1538 #define INSN_FROM_TARGET_P(RTX) \
1539 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1540 CALL_INSN)->in_struct)
1542 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1543 See the comments for ADDR_DIFF_VEC in rtl.def. */
1544 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1546 /* In a VALUE, the value cselib has assigned to RTX.
1547 This is a "struct cselib_val", see cselib.h. */
1548 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1550 /* Holds a list of notes on what this insn does to various REGs.
1551 It is a chain of EXPR_LIST rtx's, where the second operand is the
1552 chain pointer and the first operand is the REG being described.
1553 The mode field of the EXPR_LIST contains not a real machine mode
1554 but a value from enum reg_note. */
1555 #define REG_NOTES(INSN) XEXP(INSN, 6)
1557 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1559 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1563 #define DEF_REG_NOTE(NAME) NAME,
1564 #include "reg-notes.def"
1569 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1570 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1571 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1572 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1574 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1576 extern const char * const reg_note_name
[];
1577 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1579 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1580 USE and CLOBBER expressions.
1581 USE expressions list the registers filled with arguments that
1582 are passed to the function.
1583 CLOBBER expressions document the registers explicitly clobbered
1585 Pseudo registers can not be mentioned in this list. */
1586 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1588 /* The label-number of a code-label. The assembler label
1589 is made from `L' and the label-number printed in decimal.
1590 Label numbers are unique in a compilation. */
1591 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1593 /* In a NOTE that is a line number, this is a string for the file name that the
1594 line is in. We use the same field to record block numbers temporarily in
1595 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1596 between ints and pointers if we use a different macro for the block number.)
1600 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1601 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1602 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1603 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1604 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1605 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1606 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1607 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1608 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1610 /* In a NOTE that is a line number, this is the line number.
1611 Other kinds of NOTEs are identified by negative numbers here. */
1612 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1614 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1615 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1616 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1618 /* Variable declaration and the location of a variable. */
1619 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1620 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1622 /* Initialization status of the variable in the location. Status
1623 can be unknown, uninitialized or initialized. See enumeration
1625 #define PAT_VAR_LOCATION_STATUS(PAT) \
1626 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1627 ->u2.var_location_status)
1629 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1630 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1631 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1632 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1633 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1634 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1635 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1637 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1638 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1640 /* Accessors for a tree-expanded var location debug insn. */
1641 #define INSN_VAR_LOCATION_DECL(INSN) \
1642 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1643 #define INSN_VAR_LOCATION_LOC(INSN) \
1644 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1645 #define INSN_VAR_LOCATION_STATUS(INSN) \
1646 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1648 /* Expand to the RTL that denotes an unknown variable location in a
1650 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1652 /* Determine whether X is such an unknown location. */
1653 #define VAR_LOC_UNKNOWN_P(X) \
1654 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1656 /* 1 if RTX is emitted after a call, but it should take effect before
1657 the call returns. */
1658 #define NOTE_DURING_CALL_P(RTX) \
1659 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1661 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1662 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1664 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1665 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1667 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1668 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1670 /* Codes that appear in the NOTE_KIND field for kinds of notes
1671 that are not line numbers. These codes are all negative.
1673 Notice that we do not try to use zero here for any of
1674 the special note codes because sometimes the source line
1675 actually can be zero! This happens (for example) when we
1676 are generating code for the per-translation-unit constructor
1677 and destructor routines for some C++ translation unit. */
1681 #define DEF_INSN_NOTE(NAME) NAME,
1682 #include "insn-notes.def"
1683 #undef DEF_INSN_NOTE
1688 /* Names for NOTE insn's other than line numbers. */
1690 extern const char * const note_insn_name
[NOTE_INSN_MAX
];
1691 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1692 (note_insn_name[(NOTE_CODE)])
1694 /* The name of a label, in case it corresponds to an explicit label
1695 in the input source code. */
1696 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1698 /* In jump.c, each label contains a count of the number
1699 of LABEL_REFs that point at it, so unused labels can be deleted. */
1700 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1702 /* Labels carry a two-bit field composed of the ->jump and ->call
1703 bits. This field indicates whether the label is an alternate
1704 entry point, and if so, what kind. */
1707 LABEL_NORMAL
= 0, /* ordinary label */
1708 LABEL_STATIC_ENTRY
, /* alternate entry point, not exported */
1709 LABEL_GLOBAL_ENTRY
, /* alternate entry point, exported */
1710 LABEL_WEAK_ENTRY
/* alternate entry point, exported as weak symbol */
1713 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1715 /* Retrieve the kind of LABEL. */
1716 #define LABEL_KIND(LABEL) __extension__ \
1717 ({ __typeof (LABEL) const _label = (LABEL); \
1718 if (! LABEL_P (_label)) \
1719 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1721 (enum label_kind) ((_label->jump << 1) | _label->call); })
1723 /* Set the kind of LABEL. */
1724 #define SET_LABEL_KIND(LABEL, KIND) do { \
1725 __typeof (LABEL) const _label = (LABEL); \
1726 const unsigned int _kind = (KIND); \
1727 if (! LABEL_P (_label)) \
1728 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1730 _label->jump = ((_kind >> 1) & 1); \
1731 _label->call = (_kind & 1); \
1736 /* Retrieve the kind of LABEL. */
1737 #define LABEL_KIND(LABEL) \
1738 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1740 /* Set the kind of LABEL. */
1741 #define SET_LABEL_KIND(LABEL, KIND) do { \
1742 rtx const _label = (LABEL); \
1743 const unsigned int _kind = (KIND); \
1744 _label->jump = ((_kind >> 1) & 1); \
1745 _label->call = (_kind & 1); \
1748 #endif /* rtl flag checking */
1750 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1752 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1753 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1754 be decremented and possibly the label can be deleted. */
1755 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1757 inline rtx_insn
*JUMP_LABEL_AS_INSN (const rtx_insn
*insn
)
1759 return safe_as_a
<rtx_insn
*> (JUMP_LABEL (insn
));
1762 /* Methods of rtx_jump_insn. */
1764 inline rtx
rtx_jump_insn::jump_label () const
1766 return JUMP_LABEL (this);
1769 inline rtx_code_label
*rtx_jump_insn::jump_target () const
1771 return safe_as_a
<rtx_code_label
*> (JUMP_LABEL (this));
1774 inline void rtx_jump_insn::set_jump_target (rtx_code_label
*target
)
1776 JUMP_LABEL (this) = target
;
1779 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1780 goes through all the LABEL_REFs that jump to that label. The chain
1781 eventually winds up at the CODE_LABEL: it is circular. */
1782 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1784 /* Get the label that a LABEL_REF references. */
1785 static inline rtx_insn
*
1786 label_ref_label (const_rtx ref
)
1788 return as_a
<rtx_insn
*> (XCEXP (ref
, 0, LABEL_REF
));
1791 /* Set the label that LABEL_REF ref refers to. */
1794 set_label_ref_label (rtx ref
, rtx_insn
*label
)
1796 XCEXP (ref
, 0, LABEL_REF
) = label
;
1799 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1800 be used on RHS. Use SET_REGNO to change the value. */
1801 #define REGNO(RTX) (rhs_regno(RTX))
1802 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1804 /* Return the number of consecutive registers in a REG. This is always
1805 1 for pseudo registers and is determined by TARGET_HARD_REGNO_NREGS for
1807 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1809 /* ORIGINAL_REGNO holds the number the register originally had; for a
1810 pseudo register turned into a hard reg this will hold the old pseudo
1812 #define ORIGINAL_REGNO(RTX) \
1813 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1815 /* Force the REGNO macro to only be used on the lhs. */
1816 static inline unsigned int
1817 rhs_regno (const_rtx x
)
1819 return REG_CHECK (x
)->regno
;
1822 /* Return the final register in REG X plus one. */
1823 static inline unsigned int
1824 END_REGNO (const_rtx x
)
1826 return REGNO (x
) + REG_NREGS (x
);
1829 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1830 bypassing the df machinery. */
1832 set_regno_raw (rtx x
, unsigned int regno
, unsigned int nregs
)
1834 reg_info
*reg
= REG_CHECK (x
);
1839 /* 1 if RTX is a reg or parallel that is the current function's return
1841 #define REG_FUNCTION_VALUE_P(RTX) \
1842 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1844 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1845 #define REG_USERVAR_P(RTX) \
1846 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1848 /* 1 if RTX is a reg that holds a pointer value. */
1849 #define REG_POINTER(RTX) \
1850 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1852 /* 1 if RTX is a mem that holds a pointer value. */
1853 #define MEM_POINTER(RTX) \
1854 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1856 /* 1 if the given register REG corresponds to a hard register. */
1857 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1859 /* 1 if the given register number REG_NO corresponds to a hard register. */
1860 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1862 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1863 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1864 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1866 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1867 elements actually needed to represent the constant.
1868 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1869 significant HOST_WIDE_INT. */
1870 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1871 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1872 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1874 /* For a CONST_DOUBLE:
1875 #if TARGET_SUPPORTS_WIDE_INT == 0
1876 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1877 low-order word and ..._HIGH the high-order.
1879 For a float, there is a REAL_VALUE_TYPE structure, and
1880 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1881 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1882 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1883 #define CONST_DOUBLE_REAL_VALUE(r) \
1884 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1886 #define CONST_FIXED_VALUE(r) \
1887 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1888 #define CONST_FIXED_VALUE_HIGH(r) \
1889 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1890 #define CONST_FIXED_VALUE_LOW(r) \
1891 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1893 /* For a CONST_VECTOR, return element #n. */
1894 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1896 /* For a CONST_VECTOR, return the number of elements in a vector. */
1897 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1899 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1900 SUBREG_BYTE extracts the byte-number. */
1902 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1903 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1906 /* Return the right cost to give to an operation
1907 to make the cost of the corresponding register-to-register instruction
1908 N times that of a fast register-to-register instruction. */
1909 #define COSTS_N_INSNS(N) ((N) * 4)
1911 /* Maximum cost of an rtl expression. This value has the special meaning
1912 not to use an rtx with this cost under any circumstances. */
1913 #define MAX_COST INT_MAX
1915 /* Return true if CODE always has VOIDmode. */
1918 always_void_p (enum rtx_code code
)
1923 /* A structure to hold all available cost information about an rtl
1925 struct full_rtx_costs
1931 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1933 init_costs_to_max (struct full_rtx_costs
*c
)
1935 c
->speed
= MAX_COST
;
1939 /* Initialize a full_rtx_costs structure C to zero cost. */
1941 init_costs_to_zero (struct full_rtx_costs
*c
)
1947 /* Compare two full_rtx_costs structures A and B, returning true
1948 if A < B when optimizing for speed. */
1950 costs_lt_p (struct full_rtx_costs
*a
, struct full_rtx_costs
*b
,
1954 return (a
->speed
< b
->speed
1955 || (a
->speed
== b
->speed
&& a
->size
< b
->size
));
1957 return (a
->size
< b
->size
1958 || (a
->size
== b
->size
&& a
->speed
< b
->speed
));
1961 /* Increase both members of the full_rtx_costs structure C by the
1964 costs_add_n_insns (struct full_rtx_costs
*c
, int n
)
1966 c
->speed
+= COSTS_N_INSNS (n
);
1967 c
->size
+= COSTS_N_INSNS (n
);
1970 /* Describes the shape of a subreg:
1972 inner_mode == the mode of the SUBREG_REG
1973 offset == the SUBREG_BYTE
1974 outer_mode == the mode of the SUBREG itself. */
1975 struct subreg_shape
{
1976 subreg_shape (machine_mode
, unsigned int, machine_mode
);
1977 bool operator == (const subreg_shape
&) const;
1978 bool operator != (const subreg_shape
&) const;
1979 unsigned int unique_id () const;
1981 machine_mode inner_mode
;
1982 unsigned int offset
;
1983 machine_mode outer_mode
;
1987 subreg_shape::subreg_shape (machine_mode inner_mode_in
,
1988 unsigned int offset_in
,
1989 machine_mode outer_mode_in
)
1990 : inner_mode (inner_mode_in
), offset (offset_in
), outer_mode (outer_mode_in
)
1994 subreg_shape::operator == (const subreg_shape
&other
) const
1996 return (inner_mode
== other
.inner_mode
1997 && offset
== other
.offset
1998 && outer_mode
== other
.outer_mode
);
2002 subreg_shape::operator != (const subreg_shape
&other
) const
2004 return !operator == (other
);
2007 /* Return an integer that uniquely identifies this shape. Structures
2008 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
2009 current mode is anywhere near being 65536 bytes in size, so the
2010 id comfortably fits in an int. */
2013 subreg_shape::unique_id () const
2015 STATIC_ASSERT (MAX_MACHINE_MODE
<= 256);
2016 return (int) inner_mode
+ ((int) outer_mode
<< 8) + (offset
<< 16);
2019 /* Return the shape of a SUBREG rtx. */
2021 static inline subreg_shape
2022 shape_of_subreg (const_rtx x
)
2024 return subreg_shape (GET_MODE (SUBREG_REG (x
)),
2025 SUBREG_BYTE (x
), GET_MODE (x
));
2028 /* Information about an address. This structure is supposed to be able
2029 to represent all supported target addresses. Please extend it if it
2030 is not yet general enough. */
2031 struct address_info
{
2032 /* The mode of the value being addressed, or VOIDmode if this is
2033 a load-address operation with no known address mode. */
2036 /* The address space. */
2039 /* True if this is an RTX_AUTOINC address. */
2042 /* A pointer to the top-level address. */
2045 /* A pointer to the inner address, after all address mutations
2046 have been stripped from the top-level address. It can be one
2049 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2051 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2052 points to the step value, depending on whether the step is variable
2053 or constant respectively. SEGMENT is null.
2055 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2056 with null fields evaluating to 0. */
2059 /* Components that make up *INNER. Each one may be null or nonnull.
2060 When nonnull, their meanings are as follows:
2062 - *SEGMENT is the "segment" of memory to which the address refers.
2063 This value is entirely target-specific and is only called a "segment"
2064 because that's its most typical use. It contains exactly one UNSPEC,
2065 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2068 - *BASE is a variable expression representing a base address.
2069 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2071 - *INDEX is a variable expression representing an index value.
2072 It may be a scaled expression, such as a MULT. It has exactly
2073 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2075 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2076 unmutated RTX_CONST_OBJ. */
2087 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2088 of BASE_TERM, otherwise it is null. */
2091 /* ADDRESS if this structure describes an address operand, MEM if
2092 it describes a MEM address. */
2093 enum rtx_code addr_outer_code
;
2095 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2096 enum rtx_code base_outer_code
;
2099 /* This is used to bundle an rtx and a mode together so that the pair
2100 can be used with the wi:: routines. If we ever put modes into rtx
2101 integer constants, this should go away and then just pass an rtx in. */
2102 typedef std::pair
<rtx
, machine_mode
> rtx_mode_t
;
2107 struct int_traits
<rtx_mode_t
>
2109 static const enum precision_type precision_type
= VAR_PRECISION
;
2110 static const bool host_dependent_precision
= false;
2111 /* This ought to be true, except for the special case that BImode
2112 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2113 static const bool is_sign_extended
= false;
2114 static unsigned int get_precision (const rtx_mode_t
&);
2115 static wi::storage_ref
decompose (HOST_WIDE_INT
*, unsigned int,
2116 const rtx_mode_t
&);
2121 wi::int_traits
<rtx_mode_t
>::get_precision (const rtx_mode_t
&x
)
2123 return GET_MODE_PRECISION (as_a
<scalar_mode
> (x
.second
));
2126 inline wi::storage_ref
2127 wi::int_traits
<rtx_mode_t
>::decompose (HOST_WIDE_INT
*,
2128 unsigned int precision
,
2129 const rtx_mode_t
&x
)
2131 gcc_checking_assert (precision
== get_precision (x
));
2132 switch (GET_CODE (x
.first
))
2135 if (precision
< HOST_BITS_PER_WIDE_INT
)
2136 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2137 targets is 1 rather than -1. */
2138 gcc_checking_assert (INTVAL (x
.first
)
2139 == sext_hwi (INTVAL (x
.first
), precision
)
2140 || (x
.second
== BImode
&& INTVAL (x
.first
) == 1));
2142 return wi::storage_ref (&INTVAL (x
.first
), 1, precision
);
2144 case CONST_WIDE_INT
:
2145 return wi::storage_ref (&CONST_WIDE_INT_ELT (x
.first
, 0),
2146 CONST_WIDE_INT_NUNITS (x
.first
), precision
);
2148 #if TARGET_SUPPORTS_WIDE_INT == 0
2150 return wi::storage_ref (&CONST_DOUBLE_LOW (x
.first
), 2, precision
);
2160 hwi_with_prec
shwi (HOST_WIDE_INT
, machine_mode mode
);
2161 wide_int
min_value (machine_mode
, signop
);
2162 wide_int
max_value (machine_mode
, signop
);
2165 inline wi::hwi_with_prec
2166 wi::shwi (HOST_WIDE_INT val
, machine_mode mode
)
2168 return shwi (val
, GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)));
2171 /* Produce the smallest number that is represented in MODE. The precision
2172 is taken from MODE and the sign from SGN. */
2174 wi::min_value (machine_mode mode
, signop sgn
)
2176 return min_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2179 /* Produce the largest number that is represented in MODE. The precision
2180 is taken from MODE and the sign from SGN. */
2182 wi::max_value (machine_mode mode
, signop sgn
)
2184 return max_value (GET_MODE_PRECISION (as_a
<scalar_mode
> (mode
)), sgn
);
2187 extern void init_rtlanal (void);
2188 extern int rtx_cost (rtx
, machine_mode
, enum rtx_code
, int, bool);
2189 extern int address_cost (rtx
, machine_mode
, addr_space_t
, bool);
2190 extern void get_full_rtx_cost (rtx
, machine_mode
, enum rtx_code
, int,
2191 struct full_rtx_costs
*);
2192 extern unsigned int subreg_lsb (const_rtx
);
2193 extern unsigned int subreg_lsb_1 (machine_mode
, machine_mode
,
2195 extern unsigned int subreg_size_offset_from_lsb (unsigned int, unsigned int,
2197 extern bool read_modify_subreg_p (const_rtx
);
2199 /* Return the subreg byte offset for a subreg whose outer mode is
2200 OUTER_MODE, whose inner mode is INNER_MODE, and where there are
2201 LSB_SHIFT *bits* between the lsb of the outer value and the lsb of
2202 the inner value. This is the inverse of subreg_lsb_1 (which converts
2203 byte offsets to bit shifts). */
2206 subreg_offset_from_lsb (machine_mode outer_mode
,
2207 machine_mode inner_mode
,
2208 unsigned int lsb_shift
)
2210 return subreg_size_offset_from_lsb (GET_MODE_SIZE (outer_mode
),
2211 GET_MODE_SIZE (inner_mode
), lsb_shift
);
2214 extern unsigned int subreg_regno_offset (unsigned int, machine_mode
,
2215 unsigned int, machine_mode
);
2216 extern bool subreg_offset_representable_p (unsigned int, machine_mode
,
2217 unsigned int, machine_mode
);
2218 extern unsigned int subreg_regno (const_rtx
);
2219 extern int simplify_subreg_regno (unsigned int, machine_mode
,
2220 unsigned int, machine_mode
);
2221 extern unsigned int subreg_nregs (const_rtx
);
2222 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx
);
2223 extern unsigned HOST_WIDE_INT
nonzero_bits (const_rtx
, machine_mode
);
2224 extern unsigned int num_sign_bit_copies (const_rtx
, machine_mode
);
2225 extern bool constant_pool_constant_p (rtx
);
2226 extern bool truncated_to_mode (machine_mode
, const_rtx
);
2227 extern int low_bitmask_len (machine_mode
, unsigned HOST_WIDE_INT
);
2228 extern void split_double (rtx
, rtx
*, rtx
*);
2229 extern rtx
*strip_address_mutations (rtx
*, enum rtx_code
* = 0);
2230 extern void decompose_address (struct address_info
*, rtx
*,
2231 machine_mode
, addr_space_t
, enum rtx_code
);
2232 extern void decompose_lea_address (struct address_info
*, rtx
*);
2233 extern void decompose_mem_address (struct address_info
*, rtx
);
2234 extern void update_address (struct address_info
*);
2235 extern HOST_WIDE_INT
get_index_scale (const struct address_info
*);
2236 extern enum rtx_code
get_index_code (const struct address_info
*);
2238 /* 1 if RTX is a subreg containing a reg that is already known to be
2239 sign- or zero-extended from the mode of the subreg to the mode of
2240 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2243 When used as a LHS, is means that this extension must be done
2244 when assigning to SUBREG_REG. */
2246 #define SUBREG_PROMOTED_VAR_P(RTX) \
2247 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2249 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2250 this gives the necessary extensions:
2251 0 - signed (SPR_SIGNED)
2252 1 - normal unsigned (SPR_UNSIGNED)
2253 2 - value is both sign and unsign extended for mode
2254 (SPR_SIGNED_AND_UNSIGNED).
2255 -1 - pointer unsigned, which most often can be handled like unsigned
2256 extension, except for generating instructions where we need to
2257 emit special code (ptr_extend insns) on some architectures
2260 const int SRP_POINTER
= -1;
2261 const int SRP_SIGNED
= 0;
2262 const int SRP_UNSIGNED
= 1;
2263 const int SRP_SIGNED_AND_UNSIGNED
= 2;
2265 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2266 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2268 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2273 _rtx->volatil = 0; \
2274 _rtx->unchanging = 0; \
2277 _rtx->volatil = 0; \
2278 _rtx->unchanging = 1; \
2280 case SRP_UNSIGNED: \
2281 _rtx->volatil = 1; \
2282 _rtx->unchanging = 0; \
2284 case SRP_SIGNED_AND_UNSIGNED: \
2285 _rtx->volatil = 1; \
2286 _rtx->unchanging = 1; \
2291 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2292 including SRP_SIGNED_AND_UNSIGNED if promoted for
2293 both signed and unsigned. */
2294 #define SUBREG_PROMOTED_GET(RTX) \
2295 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2296 + (RTX)->unchanging - 1)
2298 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2299 #define SUBREG_PROMOTED_SIGN(RTX) \
2300 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2301 : (RTX)->unchanging - 1)
2303 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2305 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2306 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2308 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2309 for UNSIGNED type. */
2310 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2311 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2313 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2314 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2315 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2316 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2317 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2319 /* True if the REG is the static chain register for some CALL_INSN. */
2320 #define STATIC_CHAIN_REG_P(RTX) \
2321 (RTL_FLAG_CHECK1 ("STATIC_CHAIN_REG_P", (RTX), REG)->jump)
2323 /* True if the subreg was generated by LRA for reload insns. Such
2324 subregs are valid only during LRA. */
2325 #define LRA_SUBREG_P(RTX) \
2326 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2328 /* True if call is instrumented by Pointer Bounds Checker. */
2329 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \
2330 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump)
2332 /* Access various components of an ASM_OPERANDS rtx. */
2334 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2335 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2336 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2337 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2338 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2339 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2340 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2341 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2342 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2343 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2344 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2345 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2346 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2347 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2348 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2349 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2350 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2351 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2353 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2354 #define MEM_READONLY_P(RTX) \
2355 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2357 /* 1 if RTX is a mem and we should keep the alias set for this mem
2358 unchanged when we access a component. Set to 1, or example, when we
2359 are already in a non-addressable component of an aggregate. */
2360 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2361 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2363 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2364 #define MEM_VOLATILE_P(RTX) \
2365 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2366 ASM_INPUT)->volatil)
2368 /* 1 if RTX is a mem that cannot trap. */
2369 #define MEM_NOTRAP_P(RTX) \
2370 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2372 /* The memory attribute block. We provide access macros for each value
2373 in the block and provide defaults if none specified. */
2374 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2376 /* The register attribute block. We provide access macros for each value
2377 in the block and provide defaults if none specified. */
2378 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2380 #ifndef GENERATOR_FILE
2381 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2382 set, and may alias anything. Otherwise, the MEM can only alias
2383 MEMs in a conflicting alias set. This value is set in a
2384 language-dependent manner in the front-end, and should not be
2385 altered in the back-end. These set numbers are tested with
2386 alias_sets_conflict_p. */
2387 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2389 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2390 refer to part of a DECL. It may also be a COMPONENT_REF. */
2391 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2393 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2394 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2396 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2397 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2399 /* For a MEM rtx, the address space. */
2400 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2402 /* For a MEM rtx, true if its MEM_SIZE is known. */
2403 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2405 /* For a MEM rtx, the size in bytes of the MEM. */
2406 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2408 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2409 mode as a default when STRICT_ALIGNMENT, but not if not. */
2410 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2412 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2415 /* For a REG rtx, the decl it is known to refer to, if it is known to
2416 refer to part of a DECL. */
2417 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2419 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2421 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2423 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2424 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2425 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2426 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2427 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2428 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2429 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2430 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2432 /* 1 if RTX is a label_ref for a nonlocal label. */
2433 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2434 REG_LABEL_TARGET note. */
2435 #define LABEL_REF_NONLOCAL_P(RTX) \
2436 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2438 /* 1 if RTX is a code_label that should always be considered to be needed. */
2439 #define LABEL_PRESERVE_P(RTX) \
2440 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2442 /* During sched, 1 if RTX is an insn that must be scheduled together
2443 with the preceding insn. */
2444 #define SCHED_GROUP_P(RTX) \
2445 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2446 JUMP_INSN, CALL_INSN)->in_struct)
2448 /* For a SET rtx, SET_DEST is the place that is set
2449 and SET_SRC is the value it is set to. */
2450 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2451 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2452 #define SET_IS_RETURN_P(RTX) \
2453 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2455 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2456 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2457 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2459 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2460 conditionally executing the code on, COND_EXEC_CODE is the code
2461 to execute if the condition is true. */
2462 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2463 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2465 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2467 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2468 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2470 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2471 tree constant pool. This information is private to varasm.c. */
2472 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2473 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2474 (RTX), SYMBOL_REF)->frame_related)
2476 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2477 #define SYMBOL_REF_FLAG(RTX) \
2478 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2480 /* 1 if RTX is a symbol_ref that has been the library function in
2481 emit_library_call. */
2482 #define SYMBOL_REF_USED(RTX) \
2483 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2485 /* 1 if RTX is a symbol_ref for a weak symbol. */
2486 #define SYMBOL_REF_WEAK(RTX) \
2487 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2489 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2490 SYMBOL_REF_CONSTANT. */
2491 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2493 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2495 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2496 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2498 /* The tree (decl or constant) associated with the symbol, or null. */
2499 #define SYMBOL_REF_DECL(RTX) \
2500 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2502 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2503 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2504 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2506 /* The rtx constant pool entry for a symbol, or null. */
2507 #define SYMBOL_REF_CONSTANT(RTX) \
2508 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2510 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2511 information derivable from the tree decl associated with this symbol.
2512 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2513 decl. In some cases this is a bug. But beyond that, it's nice to cache
2514 this information to avoid recomputing it. Finally, this allows space for
2515 the target to store more than one bit of information, as with
2517 #define SYMBOL_REF_FLAGS(RTX) \
2518 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2519 ->u2.symbol_ref_flags)
2521 /* These flags are common enough to be defined for all targets. They
2522 are computed by the default version of targetm.encode_section_info. */
2524 /* Set if this symbol is a function. */
2525 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2526 #define SYMBOL_REF_FUNCTION_P(RTX) \
2527 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2528 /* Set if targetm.binds_local_p is true. */
2529 #define SYMBOL_FLAG_LOCAL (1 << 1)
2530 #define SYMBOL_REF_LOCAL_P(RTX) \
2531 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2532 /* Set if targetm.in_small_data_p is true. */
2533 #define SYMBOL_FLAG_SMALL (1 << 2)
2534 #define SYMBOL_REF_SMALL_P(RTX) \
2535 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2536 /* The three-bit field at [5:3] is true for TLS variables; use
2537 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2538 #define SYMBOL_FLAG_TLS_SHIFT 3
2539 #define SYMBOL_REF_TLS_MODEL(RTX) \
2540 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2541 /* Set if this symbol is not defined in this translation unit. */
2542 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2543 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2544 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2545 /* Set if this symbol has a block_symbol structure associated with it. */
2546 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2547 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2548 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2549 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2550 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2551 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2552 #define SYMBOL_REF_ANCHOR_P(RTX) \
2553 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2555 /* Subsequent bits are available for the target to use. */
2556 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2557 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2559 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2560 structure to which the symbol belongs, or NULL if it has not been
2561 assigned a block. */
2562 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2564 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2565 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2566 RTX has not yet been assigned to a block, or it has not been given an
2567 offset within that block. */
2568 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2570 /* True if RTX is flagged to be a scheduling barrier. */
2571 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2572 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2574 /* Indicate whether the machine has any sort of auto increment addressing.
2575 If not, we can avoid checking for REG_INC notes. */
2577 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2578 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2579 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2580 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2581 #define AUTO_INC_DEC 1
2583 #define AUTO_INC_DEC 0
2586 /* Define a macro to look for REG_INC notes,
2587 but save time on machines where they never exist. */
2590 #define FIND_REG_INC_NOTE(INSN, REG) \
2591 ((REG) != NULL_RTX && REG_P ((REG)) \
2592 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2593 : find_reg_note ((INSN), REG_INC, (REG)))
2595 #define FIND_REG_INC_NOTE(INSN, REG) 0
2598 #ifndef HAVE_PRE_INCREMENT
2599 #define HAVE_PRE_INCREMENT 0
2602 #ifndef HAVE_PRE_DECREMENT
2603 #define HAVE_PRE_DECREMENT 0
2606 #ifndef HAVE_POST_INCREMENT
2607 #define HAVE_POST_INCREMENT 0
2610 #ifndef HAVE_POST_DECREMENT
2611 #define HAVE_POST_DECREMENT 0
2614 #ifndef HAVE_POST_MODIFY_DISP
2615 #define HAVE_POST_MODIFY_DISP 0
2618 #ifndef HAVE_POST_MODIFY_REG
2619 #define HAVE_POST_MODIFY_REG 0
2622 #ifndef HAVE_PRE_MODIFY_DISP
2623 #define HAVE_PRE_MODIFY_DISP 0
2626 #ifndef HAVE_PRE_MODIFY_REG
2627 #define HAVE_PRE_MODIFY_REG 0
2631 /* Some architectures do not have complete pre/post increment/decrement
2632 instruction sets, or only move some modes efficiently. These macros
2633 allow us to tune autoincrement generation. */
2635 #ifndef USE_LOAD_POST_INCREMENT
2636 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2639 #ifndef USE_LOAD_POST_DECREMENT
2640 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2643 #ifndef USE_LOAD_PRE_INCREMENT
2644 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2647 #ifndef USE_LOAD_PRE_DECREMENT
2648 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2651 #ifndef USE_STORE_POST_INCREMENT
2652 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2655 #ifndef USE_STORE_POST_DECREMENT
2656 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2659 #ifndef USE_STORE_PRE_INCREMENT
2660 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2663 #ifndef USE_STORE_PRE_DECREMENT
2664 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2667 /* Nonzero when we are generating CONCATs. */
2668 extern int generating_concat_p
;
2670 /* Nonzero when we are expanding trees to RTL. */
2671 extern int currently_expanding_to_rtl
;
2673 /* Generally useful functions. */
2675 #ifndef GENERATOR_FILE
2676 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2677 rather than size. */
2680 set_rtx_cost (rtx x
, bool speed_p
)
2682 return rtx_cost (x
, VOIDmode
, INSN
, 4, speed_p
);
2685 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2688 get_full_set_rtx_cost (rtx x
, struct full_rtx_costs
*c
)
2690 get_full_rtx_cost (x
, VOIDmode
, INSN
, 4, c
);
2693 /* Return the cost of moving X into a register, relative to the cost
2694 of a register move. SPEED_P is true if optimizing for speed rather
2698 set_src_cost (rtx x
, machine_mode mode
, bool speed_p
)
2700 return rtx_cost (x
, mode
, SET
, 1, speed_p
);
2703 /* Like set_src_cost, but return both the speed and size costs in C. */
2706 get_full_set_src_cost (rtx x
, machine_mode mode
, struct full_rtx_costs
*c
)
2708 get_full_rtx_cost (x
, mode
, SET
, 1, c
);
2712 /* A convenience macro to validate the arguments of a zero_extract
2713 expression. It determines whether SIZE lies inclusively within
2714 [1, RANGE], POS lies inclusively within between [0, RANGE - 1]
2715 and the sum lies inclusively within [1, RANGE]. RANGE must be
2716 >= 1, but SIZE and POS may be negative. */
2717 #define EXTRACT_ARGS_IN_RANGE(SIZE, POS, RANGE) \
2718 (IN_RANGE ((POS), 0, (unsigned HOST_WIDE_INT) (RANGE) - 1) \
2719 && IN_RANGE ((SIZE), 1, (unsigned HOST_WIDE_INT) (RANGE) \
2720 - (unsigned HOST_WIDE_INT)(POS)))
2723 extern HOST_WIDE_INT
trunc_int_for_mode (HOST_WIDE_INT
, machine_mode
);
2724 extern rtx
plus_constant (machine_mode
, rtx
, HOST_WIDE_INT
, bool = false);
2725 extern HOST_WIDE_INT
get_stack_check_protect (void);
2728 extern rtx
rtx_alloc (RTX_CODE CXX_MEM_STAT_INFO
);
2729 extern rtx
rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL
, int);
2730 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2731 #define const_wide_int_alloc(NWORDS) \
2732 rtx_alloc_v (CONST_WIDE_INT, \
2733 (sizeof (struct hwivec_def) \
2734 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2736 extern rtvec rtvec_alloc (int);
2737 extern rtvec
shallow_copy_rtvec (rtvec
);
2738 extern bool shared_const_p (const_rtx
);
2739 extern rtx
copy_rtx (rtx
);
2740 extern enum rtx_code
classify_insn (rtx
);
2741 extern void dump_rtx_statistics (void);
2744 extern rtx
copy_rtx_if_shared (rtx
);
2747 extern unsigned int rtx_size (const_rtx
);
2748 extern rtx
shallow_copy_rtx (const_rtx CXX_MEM_STAT_INFO
);
2749 extern int rtx_equal_p (const_rtx
, const_rtx
);
2750 extern bool rtvec_all_equal_p (const_rtvec
);
2752 /* Return true if X is some form of vector constant. */
2755 const_vec_p (const_rtx x
)
2757 return VECTOR_MODE_P (GET_MODE (x
)) && CONSTANT_P (x
);
2760 /* Return true if X is a vector constant with a duplicated element value. */
2763 const_vec_duplicate_p (const_rtx x
)
2765 return ((GET_CODE (x
) == CONST_VECTOR
&& rtvec_all_equal_p (XVEC (x
, 0)))
2766 || (GET_CODE (x
) == CONST
2767 && GET_CODE (XEXP (x
, 0)) == VEC_DUPLICATE
));
2770 /* Return true if X is a vector constant with a duplicated element value.
2771 Store the duplicated element in *ELT if so. */
2773 template <typename T
>
2775 const_vec_duplicate_p (T x
, T
*elt
)
2777 if (GET_CODE (x
) == CONST_VECTOR
&& rtvec_all_equal_p (XVEC (x
, 0)))
2779 *elt
= CONST_VECTOR_ELT (x
, 0);
2782 if (GET_CODE (x
) == CONST
&& GET_CODE (XEXP (x
, 0)) == VEC_DUPLICATE
)
2784 *elt
= XEXP (XEXP (x
, 0), 0);
2790 /* Return true if X is a vector with a duplicated element value, either
2791 constant or nonconstant. Store the duplicated element in *ELT if so. */
2793 template <typename T
>
2795 vec_duplicate_p (T x
, T
*elt
)
2797 if (GET_CODE (x
) == VEC_DUPLICATE
)
2802 return const_vec_duplicate_p (x
, elt
);
2805 /* If X is a vector constant with a duplicated element value, return that
2806 element value, otherwise return X. */
2808 template <typename T
>
2810 unwrap_const_vec_duplicate (T x
)
2812 if (GET_CODE (x
) == CONST_VECTOR
&& rtvec_all_equal_p (XVEC (x
, 0)))
2813 return CONST_VECTOR_ELT (x
, 0);
2814 if (GET_CODE (x
) == CONST
&& GET_CODE (XEXP (x
, 0)) == VEC_DUPLICATE
)
2815 return XEXP (XEXP (x
, 0), 0);
2819 /* In emit-rtl.c. */
2820 extern bool const_vec_series_p_1 (const_rtx
, rtx
*, rtx
*);
2822 /* Return true if X is a constant vector that contains a linear series
2825 { B, B + S, B + 2 * S, B + 3 * S, ... }
2827 for a nonzero S. Store B and S in *BASE_OUT and *STEP_OUT on sucess. */
2830 const_vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
2832 if (GET_CODE (x
) == CONST_VECTOR
2833 && GET_MODE_CLASS (GET_MODE (x
)) == MODE_VECTOR_INT
)
2834 return const_vec_series_p_1 (x
, base_out
, step_out
);
2835 if (GET_CODE (x
) == CONST
&& GET_CODE (XEXP (x
, 0)) == VEC_SERIES
)
2837 *base_out
= XEXP (XEXP (x
, 0), 0);
2838 *step_out
= XEXP (XEXP (x
, 0), 1);
2844 /* Return true if X is a vector that contains a linear series of the
2847 { B, B + S, B + 2 * S, B + 3 * S, ... }
2849 where B and S are constant or nonconstant. Store B and S in
2850 *BASE_OUT and *STEP_OUT on sucess. */
2853 vec_series_p (const_rtx x
, rtx
*base_out
, rtx
*step_out
)
2855 if (GET_CODE (x
) == VEC_SERIES
)
2857 *base_out
= XEXP (x
, 0);
2858 *step_out
= XEXP (x
, 1);
2861 return const_vec_series_p (x
, base_out
, step_out
);
2864 /* Return the unpromoted (outer) mode of SUBREG_PROMOTED_VAR_P subreg X. */
2866 inline scalar_int_mode
2867 subreg_unpromoted_mode (rtx x
)
2869 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
2870 return as_a
<scalar_int_mode
> (GET_MODE (x
));
2873 /* Return the promoted (inner) mode of SUBREG_PROMOTED_VAR_P subreg X. */
2875 inline scalar_int_mode
2876 subreg_promoted_mode (rtx x
)
2878 gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x
));
2879 return as_a
<scalar_int_mode
> (GET_MODE (SUBREG_REG (x
)));
2883 extern rtvec
gen_rtvec_v (int, rtx
*);
2884 extern rtvec
gen_rtvec_v (int, rtx_insn
**);
2885 extern rtx
gen_reg_rtx (machine_mode
);
2886 extern rtx
gen_rtx_REG_offset (rtx
, machine_mode
, unsigned int, int);
2887 extern rtx
gen_reg_rtx_offset (rtx
, machine_mode
, int);
2888 extern rtx
gen_reg_rtx_and_attrs (rtx
);
2889 extern rtx_code_label
*gen_label_rtx (void);
2890 extern rtx
gen_lowpart_common (machine_mode
, rtx
);
2893 extern rtx
gen_lowpart_if_possible (machine_mode
, rtx
);
2896 extern rtx
gen_highpart (machine_mode
, rtx
);
2897 extern rtx
gen_highpart_mode (machine_mode
, machine_mode
, rtx
);
2898 extern rtx
operand_subword (rtx
, unsigned int, int, machine_mode
);
2901 extern rtx
operand_subword_force (rtx
, unsigned int, machine_mode
);
2902 extern int subreg_lowpart_p (const_rtx
);
2903 extern unsigned int subreg_size_lowpart_offset (unsigned int, unsigned int);
2905 /* Return true if a subreg of mode OUTERMODE would only access part of
2906 an inner register with mode INNERMODE. The other bits of the inner
2907 register would then be "don't care" on read. The behavior for writes
2908 depends on REGMODE_NATURAL_SIZE; bits in the same REGMODE_NATURAL_SIZE-d
2909 chunk would be clobbered but other bits would be preserved. */
2912 partial_subreg_p (machine_mode outermode
, machine_mode innermode
)
2914 return GET_MODE_PRECISION (outermode
) < GET_MODE_PRECISION (innermode
);
2917 /* Likewise return true if X is a subreg that is smaller than the inner
2918 register. Use read_modify_subreg_p to test whether writing to such
2919 a subreg preserves any part of the inner register. */
2922 partial_subreg_p (const_rtx x
)
2924 if (GET_CODE (x
) != SUBREG
)
2926 return partial_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
2929 /* Return true if a subreg with the given outer and inner modes is
2933 paradoxical_subreg_p (machine_mode outermode
, machine_mode innermode
)
2935 return GET_MODE_PRECISION (outermode
) > GET_MODE_PRECISION (innermode
);
2938 /* Return true if X is a paradoxical subreg, false otherwise. */
2941 paradoxical_subreg_p (const_rtx x
)
2943 if (GET_CODE (x
) != SUBREG
)
2945 return paradoxical_subreg_p (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
2948 /* Return the SUBREG_BYTE for an OUTERMODE lowpart of an INNERMODE value. */
2951 subreg_lowpart_offset (machine_mode outermode
, machine_mode innermode
)
2953 return subreg_size_lowpart_offset (GET_MODE_SIZE (outermode
),
2954 GET_MODE_SIZE (innermode
));
2957 /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
2958 return the mode that is big enough to hold both the outer and inner
2959 values. Prefer the outer mode in the event of a tie. */
2962 wider_subreg_mode (machine_mode outermode
, machine_mode innermode
)
2964 return partial_subreg_p (outermode
, innermode
) ? innermode
: outermode
;
2967 /* Likewise for subreg X. */
2970 wider_subreg_mode (const_rtx x
)
2972 return wider_subreg_mode (GET_MODE (x
), GET_MODE (SUBREG_REG (x
)));
2975 extern unsigned int subreg_size_highpart_offset (unsigned int, unsigned int);
2977 /* Return the SUBREG_BYTE for an OUTERMODE highpart of an INNERMODE value. */
2980 subreg_highpart_offset (machine_mode outermode
, machine_mode innermode
)
2982 return subreg_size_highpart_offset (GET_MODE_SIZE (outermode
),
2983 GET_MODE_SIZE (innermode
));
2986 extern int byte_lowpart_offset (machine_mode
, machine_mode
);
2987 extern int subreg_memory_offset (machine_mode
, machine_mode
, unsigned int);
2988 extern int subreg_memory_offset (const_rtx
);
2989 extern rtx
make_safe_from (rtx
, rtx
);
2990 extern rtx
convert_memory_address_addr_space_1 (scalar_int_mode
, rtx
,
2991 addr_space_t
, bool, bool);
2992 extern rtx
convert_memory_address_addr_space (scalar_int_mode
, rtx
,
2994 #define convert_memory_address(to_mode,x) \
2995 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2996 extern const char *get_insn_name (int);
2997 extern rtx_insn
*get_last_insn_anywhere (void);
2998 extern rtx_insn
*get_first_nonnote_insn (void);
2999 extern rtx_insn
*get_last_nonnote_insn (void);
3000 extern void start_sequence (void);
3001 extern void push_to_sequence (rtx_insn
*);
3002 extern void push_to_sequence2 (rtx_insn
*, rtx_insn
*);
3003 extern void end_sequence (void);
3004 #if TARGET_SUPPORTS_WIDE_INT == 0
3005 extern double_int
rtx_to_double_int (const_rtx
);
3007 extern void cwi_output_hex (FILE *, const_rtx
);
3008 #ifndef GENERATOR_FILE
3009 extern rtx
immed_wide_int_const (const wide_int_ref
&, machine_mode
);
3011 #if TARGET_SUPPORTS_WIDE_INT == 0
3012 extern rtx
immed_double_const (HOST_WIDE_INT
, HOST_WIDE_INT
,
3017 extern rtx
force_const_mem (machine_mode
, rtx
);
3022 extern rtx
get_pool_constant (const_rtx
);
3023 extern rtx
get_pool_constant_mark (rtx
, bool *);
3024 extern fixed_size_mode
get_pool_mode (const_rtx
);
3025 extern rtx
simplify_subtraction (rtx
);
3026 extern void decide_function_section (tree
);
3029 extern rtx_insn
*emit_insn_before (rtx
, rtx
);
3030 extern rtx_insn
*emit_insn_before_noloc (rtx
, rtx_insn
*, basic_block
);
3031 extern rtx_insn
*emit_insn_before_setloc (rtx
, rtx_insn
*, int);
3032 extern rtx_jump_insn
*emit_jump_insn_before (rtx
, rtx
);
3033 extern rtx_jump_insn
*emit_jump_insn_before_noloc (rtx
, rtx_insn
*);
3034 extern rtx_jump_insn
*emit_jump_insn_before_setloc (rtx
, rtx_insn
*, int);
3035 extern rtx_insn
*emit_call_insn_before (rtx
, rtx_insn
*);
3036 extern rtx_insn
*emit_call_insn_before_noloc (rtx
, rtx_insn
*);
3037 extern rtx_insn
*emit_call_insn_before_setloc (rtx
, rtx_insn
*, int);
3038 extern rtx_insn
*emit_debug_insn_before (rtx
, rtx_insn
*);
3039 extern rtx_insn
*emit_debug_insn_before_noloc (rtx
, rtx
);
3040 extern rtx_insn
*emit_debug_insn_before_setloc (rtx
, rtx
, int);
3041 extern rtx_barrier
*emit_barrier_before (rtx
);
3042 extern rtx_code_label
*emit_label_before (rtx
, rtx_insn
*);
3043 extern rtx_note
*emit_note_before (enum insn_note
, rtx_insn
*);
3044 extern rtx_insn
*emit_insn_after (rtx
, rtx
);
3045 extern rtx_insn
*emit_insn_after_noloc (rtx
, rtx
, basic_block
);
3046 extern rtx_insn
*emit_insn_after_setloc (rtx
, rtx
, int);
3047 extern rtx_jump_insn
*emit_jump_insn_after (rtx
, rtx
);
3048 extern rtx_jump_insn
*emit_jump_insn_after_noloc (rtx
, rtx
);
3049 extern rtx_jump_insn
*emit_jump_insn_after_setloc (rtx
, rtx
, int);
3050 extern rtx_insn
*emit_call_insn_after (rtx
, rtx
);
3051 extern rtx_insn
*emit_call_insn_after_noloc (rtx
, rtx
);
3052 extern rtx_insn
*emit_call_insn_after_setloc (rtx
, rtx
, int);
3053 extern rtx_insn
*emit_debug_insn_after (rtx
, rtx
);
3054 extern rtx_insn
*emit_debug_insn_after_noloc (rtx
, rtx
);
3055 extern rtx_insn
*emit_debug_insn_after_setloc (rtx
, rtx
, int);
3056 extern rtx_barrier
*emit_barrier_after (rtx
);
3057 extern rtx_insn
*emit_label_after (rtx
, rtx_insn
*);
3058 extern rtx_note
*emit_note_after (enum insn_note
, rtx_insn
*);
3059 extern rtx_insn
*emit_insn (rtx
);
3060 extern rtx_insn
*emit_debug_insn (rtx
);
3061 extern rtx_insn
*emit_jump_insn (rtx
);
3062 extern rtx_insn
*emit_call_insn (rtx
);
3063 extern rtx_code_label
*emit_label (rtx
);
3064 extern rtx_jump_table_data
*emit_jump_table_data (rtx
);
3065 extern rtx_barrier
*emit_barrier (void);
3066 extern rtx_note
*emit_note (enum insn_note
);
3067 extern rtx_note
*emit_note_copy (rtx_note
*);
3068 extern rtx_insn
*gen_clobber (rtx
);
3069 extern rtx_insn
*emit_clobber (rtx
);
3070 extern rtx_insn
*gen_use (rtx
);
3071 extern rtx_insn
*emit_use (rtx
);
3072 extern rtx_insn
*make_insn_raw (rtx
);
3073 extern void add_function_usage_to (rtx
, rtx
);
3074 extern rtx_call_insn
*last_call_insn (void);
3075 extern rtx_insn
*previous_insn (rtx_insn
*);
3076 extern rtx_insn
*next_insn (rtx_insn
*);
3077 extern rtx_insn
*prev_nonnote_insn (rtx_insn
*);
3078 extern rtx_insn
*prev_nonnote_insn_bb (rtx_insn
*);
3079 extern rtx_insn
*next_nonnote_insn (rtx_insn
*);
3080 extern rtx_insn
*next_nonnote_insn_bb (rtx_insn
*);
3081 extern rtx_insn
*prev_nondebug_insn (rtx_insn
*);
3082 extern rtx_insn
*next_nondebug_insn (rtx_insn
*);
3083 extern rtx_insn
*prev_nonnote_nondebug_insn (rtx_insn
*);
3084 extern rtx_insn
*next_nonnote_nondebug_insn (rtx_insn
*);
3085 extern rtx_insn
*prev_real_insn (rtx_insn
*);
3086 extern rtx_insn
*next_real_insn (rtx
);
3087 extern rtx_insn
*prev_active_insn (rtx_insn
*);
3088 extern rtx_insn
*next_active_insn (rtx_insn
*);
3089 extern int active_insn_p (const rtx_insn
*);
3090 extern rtx_insn
*next_cc0_user (rtx_insn
*);
3091 extern rtx_insn
*prev_cc0_setter (rtx_insn
*);
3094 extern int insn_line (const rtx_insn
*);
3095 extern const char * insn_file (const rtx_insn
*);
3096 extern tree
insn_scope (const rtx_insn
*);
3097 extern expanded_location
insn_location (const rtx_insn
*);
3098 extern location_t prologue_location
, epilogue_location
;
3101 extern enum rtx_code
reverse_condition (enum rtx_code
);
3102 extern enum rtx_code
reverse_condition_maybe_unordered (enum rtx_code
);
3103 extern enum rtx_code
swap_condition (enum rtx_code
);
3104 extern enum rtx_code
unsigned_condition (enum rtx_code
);
3105 extern enum rtx_code
signed_condition (enum rtx_code
);
3106 extern void mark_jump_label (rtx
, rtx_insn
*, int);
3109 extern rtx_insn
*delete_related_insns (rtx
);
3112 extern rtx
*find_constant_term_loc (rtx
*);
3115 extern rtx_insn
*try_split (rtx
, rtx_insn
*, int);
3117 /* In insn-recog.c (generated by genrecog). */
3118 extern rtx_insn
*split_insns (rtx
, rtx_insn
*);
3120 /* In simplify-rtx.c */
3121 extern rtx
simplify_const_unary_operation (enum rtx_code
, machine_mode
,
3123 extern rtx
simplify_unary_operation (enum rtx_code
, machine_mode
, rtx
,
3125 extern rtx
simplify_const_binary_operation (enum rtx_code
, machine_mode
,
3127 extern rtx
simplify_binary_operation (enum rtx_code
, machine_mode
, rtx
,
3129 extern rtx
simplify_ternary_operation (enum rtx_code
, machine_mode
,
3130 machine_mode
, rtx
, rtx
, rtx
);
3131 extern rtx
simplify_const_relational_operation (enum rtx_code
,
3132 machine_mode
, rtx
, rtx
);
3133 extern rtx
simplify_relational_operation (enum rtx_code
, machine_mode
,
3134 machine_mode
, rtx
, rtx
);
3135 extern rtx
simplify_gen_binary (enum rtx_code
, machine_mode
, rtx
, rtx
);
3136 extern rtx
simplify_gen_unary (enum rtx_code
, machine_mode
, rtx
,
3138 extern rtx
simplify_gen_ternary (enum rtx_code
, machine_mode
,
3139 machine_mode
, rtx
, rtx
, rtx
);
3140 extern rtx
simplify_gen_relational (enum rtx_code
, machine_mode
,
3141 machine_mode
, rtx
, rtx
);
3142 extern rtx
simplify_subreg (machine_mode
, rtx
, machine_mode
,
3144 extern rtx
simplify_gen_subreg (machine_mode
, rtx
, machine_mode
,
3146 extern rtx
lowpart_subreg (machine_mode
, rtx
, machine_mode
);
3147 extern rtx
simplify_replace_fn_rtx (rtx
, const_rtx
,
3148 rtx (*fn
) (rtx
, const_rtx
, void *), void *);
3149 extern rtx
simplify_replace_rtx (rtx
, const_rtx
, rtx
);
3150 extern rtx
simplify_rtx (const_rtx
);
3151 extern rtx
avoid_constant_pool_reference (rtx
);
3152 extern rtx
delegitimize_mem_from_attrs (rtx
);
3153 extern bool mode_signbit_p (machine_mode
, const_rtx
);
3154 extern bool val_signbit_p (machine_mode
, unsigned HOST_WIDE_INT
);
3155 extern bool val_signbit_known_set_p (machine_mode
,
3156 unsigned HOST_WIDE_INT
);
3157 extern bool val_signbit_known_clear_p (machine_mode
,
3158 unsigned HOST_WIDE_INT
);
3161 extern machine_mode
choose_hard_reg_mode (unsigned int, unsigned int,
3163 extern const HARD_REG_SET
&simplifiable_subregs (const subreg_shape
&);
3166 extern rtx
set_for_reg_notes (rtx
);
3167 extern rtx
set_unique_reg_note (rtx
, enum reg_note
, rtx
);
3168 extern rtx
set_dst_reg_note (rtx
, enum reg_note
, rtx
, rtx
);
3169 extern void set_insn_deleted (rtx
);
3171 /* Functions in rtlanal.c */
3173 extern rtx
single_set_2 (const rtx_insn
*, const_rtx
);
3174 extern bool contains_symbol_ref_p (const_rtx
);
3175 extern bool contains_symbolic_reference_p (const_rtx
);
3177 /* Handle the cheap and common cases inline for performance. */
3179 inline rtx
single_set (const rtx_insn
*insn
)
3184 if (GET_CODE (PATTERN (insn
)) == SET
)
3185 return PATTERN (insn
);
3187 /* Defer to the more expensive case. */
3188 return single_set_2 (insn
, PATTERN (insn
));
3191 extern scalar_int_mode
get_address_mode (rtx mem
);
3192 extern int rtx_addr_can_trap_p (const_rtx
);
3193 extern bool nonzero_address_p (const_rtx
);
3194 extern int rtx_unstable_p (const_rtx
);
3195 extern bool rtx_varies_p (const_rtx
, bool);
3196 extern bool rtx_addr_varies_p (const_rtx
, bool);
3197 extern rtx
get_call_rtx_from (rtx
);
3198 extern HOST_WIDE_INT
get_integer_term (const_rtx
);
3199 extern rtx
get_related_value (const_rtx
);
3200 extern bool offset_within_block_p (const_rtx
, HOST_WIDE_INT
);
3201 extern void split_const (rtx
, rtx
*, rtx
*);
3202 extern bool unsigned_reg_p (rtx
);
3203 extern int reg_mentioned_p (const_rtx
, const_rtx
);
3204 extern int count_occurrences (const_rtx
, const_rtx
, int);
3205 extern int reg_referenced_p (const_rtx
, const_rtx
);
3206 extern int reg_used_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3207 extern int reg_set_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3208 extern int commutative_operand_precedence (rtx
);
3209 extern bool swap_commutative_operands_p (rtx
, rtx
);
3210 extern int modified_between_p (const_rtx
, const rtx_insn
*, const rtx_insn
*);
3211 extern int no_labels_between_p (const rtx_insn
*, const rtx_insn
*);
3212 extern int modified_in_p (const_rtx
, const_rtx
);
3213 extern int reg_set_p (const_rtx
, const_rtx
);
3214 extern int multiple_sets (const_rtx
);
3215 extern int set_noop_p (const_rtx
);
3216 extern int noop_move_p (const rtx_insn
*);
3217 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx
, rtx
*);
3218 extern int reg_overlap_mentioned_p (const_rtx
, const_rtx
);
3219 extern const_rtx
set_of (const_rtx
, const_rtx
);
3220 extern void record_hard_reg_sets (rtx
, const_rtx
, void *);
3221 extern void record_hard_reg_uses (rtx
*, void *);
3222 extern void find_all_hard_regs (const_rtx
, HARD_REG_SET
*);
3223 extern void find_all_hard_reg_sets (const rtx_insn
*, HARD_REG_SET
*, bool);
3224 extern void note_stores (const_rtx
, void (*) (rtx
, const_rtx
, void *), void *);
3225 extern void note_uses (rtx
*, void (*) (rtx
*, void *), void *);
3226 extern int dead_or_set_p (const rtx_insn
*, const_rtx
);
3227 extern int dead_or_set_regno_p (const rtx_insn
*, unsigned int);
3228 extern rtx
find_reg_note (const_rtx
, enum reg_note
, const_rtx
);
3229 extern rtx
find_regno_note (const_rtx
, enum reg_note
, unsigned int);
3230 extern rtx
find_reg_equal_equiv_note (const_rtx
);
3231 extern rtx
find_constant_src (const rtx_insn
*);
3232 extern int find_reg_fusage (const_rtx
, enum rtx_code
, const_rtx
);
3233 extern int find_regno_fusage (const_rtx
, enum rtx_code
, unsigned int);
3234 extern rtx
alloc_reg_note (enum reg_note
, rtx
, rtx
);
3235 extern void add_reg_note (rtx
, enum reg_note
, rtx
);
3236 extern void add_int_reg_note (rtx_insn
*, enum reg_note
, int);
3237 extern void add_shallow_copy_of_reg_note (rtx_insn
*, rtx
);
3238 extern rtx
duplicate_reg_note (rtx
);
3239 extern void remove_note (rtx_insn
*, const_rtx
);
3240 extern bool remove_reg_equal_equiv_notes (rtx_insn
*);
3241 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3242 extern int side_effects_p (const_rtx
);
3243 extern int volatile_refs_p (const_rtx
);
3244 extern int volatile_insn_p (const_rtx
);
3245 extern int may_trap_p_1 (const_rtx
, unsigned);
3246 extern int may_trap_p (const_rtx
);
3247 extern int may_trap_or_fault_p (const_rtx
);
3248 extern bool can_throw_internal (const_rtx
);
3249 extern bool can_throw_external (const_rtx
);
3250 extern bool insn_could_throw_p (const_rtx
);
3251 extern bool insn_nothrow_p (const_rtx
);
3252 extern bool can_nonlocal_goto (const rtx_insn
*);
3253 extern void copy_reg_eh_region_note_forward (rtx
, rtx_insn
*, rtx
);
3254 extern void copy_reg_eh_region_note_backward (rtx
, rtx_insn
*, rtx
);
3255 extern int inequality_comparisons_p (const_rtx
);
3256 extern rtx
replace_rtx (rtx
, rtx
, rtx
, bool = false);
3257 extern void replace_label (rtx
*, rtx
, rtx
, bool);
3258 extern void replace_label_in_insn (rtx_insn
*, rtx_insn
*, rtx_insn
*, bool);
3259 extern bool rtx_referenced_p (const_rtx
, const_rtx
);
3260 extern bool tablejump_p (const rtx_insn
*, rtx_insn
**, rtx_jump_table_data
**);
3261 extern int computed_jump_p (const rtx_insn
*);
3262 extern bool tls_referenced_p (const_rtx
);
3263 extern bool contains_mem_rtx_p (rtx x
);
3265 /* Overload for refers_to_regno_p for checking a single register. */
3267 refers_to_regno_p (unsigned int regnum
, const_rtx x
, rtx
* loc
= NULL
)
3269 return refers_to_regno_p (regnum
, regnum
+ 1, x
, loc
);
3272 /* Callback for for_each_inc_dec, to process the autoinc operation OP
3273 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3274 NULL. The callback is passed the same opaque ARG passed to
3275 for_each_inc_dec. Return zero to continue looking for other
3276 autoinc operations or any other value to interrupt the traversal and
3277 return that value to the caller of for_each_inc_dec. */
3278 typedef int (*for_each_inc_dec_fn
) (rtx mem
, rtx op
, rtx dest
, rtx src
,
3279 rtx srcoff
, void *arg
);
3280 extern int for_each_inc_dec (rtx
, for_each_inc_dec_fn
, void *arg
);
3282 typedef int (*rtx_equal_p_callback_function
) (const_rtx
*, const_rtx
*,
3284 extern int rtx_equal_p_cb (const_rtx
, const_rtx
,
3285 rtx_equal_p_callback_function
);
3287 typedef int (*hash_rtx_callback_function
) (const_rtx
, machine_mode
, rtx
*,
3289 extern unsigned hash_rtx_cb (const_rtx
, machine_mode
, int *, int *,
3290 bool, hash_rtx_callback_function
);
3292 extern rtx
regno_use_in (unsigned int, rtx
);
3293 extern int auto_inc_p (const_rtx
);
3294 extern bool in_insn_list_p (const rtx_insn_list
*, const rtx_insn
*);
3295 extern void remove_node_from_expr_list (const_rtx
, rtx_expr_list
**);
3296 extern void remove_node_from_insn_list (const rtx_insn
*, rtx_insn_list
**);
3297 extern int loc_mentioned_in_p (rtx
*, const_rtx
);
3298 extern rtx_insn
*find_first_parameter_load (rtx_insn
*, rtx_insn
*);
3299 extern bool keep_with_call_p (const rtx_insn
*);
3300 extern bool label_is_jump_target_p (const_rtx
, const rtx_insn
*);
3301 extern int pattern_cost (rtx
, bool);
3302 extern int insn_cost (rtx_insn
*, bool);
3303 extern unsigned seq_cost (const rtx_insn
*, bool);
3305 /* Given an insn and condition, return a canonical description of
3306 the test being made. */
3307 extern rtx
canonicalize_condition (rtx_insn
*, rtx
, int, rtx_insn
**, rtx
,
3310 /* Given a JUMP_INSN, return a canonical description of the test
3312 extern rtx
get_condition (rtx_insn
*, rtx_insn
**, int, int);
3314 /* Information about a subreg of a hard register. */
3317 /* Offset of first hard register involved in the subreg. */
3319 /* Number of hard registers involved in the subreg. In the case of
3320 a paradoxical subreg, this is the number of registers that would
3321 be modified by writing to the subreg; some of them may be don't-care
3322 when reading from the subreg. */
3324 /* Whether this subreg can be represented as a hard reg with the new
3325 mode (by adding OFFSET to the original hard register). */
3326 bool representable_p
;
3329 extern void subreg_get_info (unsigned int, machine_mode
,
3330 unsigned int, machine_mode
,
3331 struct subreg_info
*);
3335 extern void free_EXPR_LIST_list (rtx_expr_list
**);
3336 extern void free_INSN_LIST_list (rtx_insn_list
**);
3337 extern void free_EXPR_LIST_node (rtx
);
3338 extern void free_INSN_LIST_node (rtx
);
3339 extern rtx_insn_list
*alloc_INSN_LIST (rtx
, rtx
);
3340 extern rtx_insn_list
*copy_INSN_LIST (rtx_insn_list
*);
3341 extern rtx_insn_list
*concat_INSN_LIST (rtx_insn_list
*, rtx_insn_list
*);
3342 extern rtx_expr_list
*alloc_EXPR_LIST (int, rtx
, rtx
);
3343 extern void remove_free_INSN_LIST_elem (rtx_insn
*, rtx_insn_list
**);
3344 extern rtx
remove_list_elem (rtx
, rtx
*);
3345 extern rtx_insn
*remove_free_INSN_LIST_node (rtx_insn_list
**);
3346 extern rtx
remove_free_EXPR_LIST_node (rtx_expr_list
**);
3351 /* Resize reg info. */
3352 extern bool resize_reg_info (void);
3353 /* Free up register info memory. */
3354 extern void free_reg_info (void);
3355 extern void init_subregs_of_mode (void);
3356 extern void finish_subregs_of_mode (void);
3359 extern rtx
extract_asm_operands (rtx
);
3360 extern int asm_noperands (const_rtx
);
3361 extern const char *decode_asm_operands (rtx
, rtx
*, rtx
**, const char **,
3362 machine_mode
*, location_t
*);
3363 extern void get_referenced_operands (const char *, bool *, unsigned int);
3365 extern enum reg_class
reg_preferred_class (int);
3366 extern enum reg_class
reg_alternate_class (int);
3367 extern enum reg_class
reg_allocno_class (int);
3368 extern void setup_reg_classes (int, enum reg_class
, enum reg_class
,
3371 extern void split_all_insns (void);
3372 extern unsigned int split_all_insns_noflow (void);
3374 #define MAX_SAVED_CONST_INT 64
3375 extern GTY(()) rtx const_int_rtx
[MAX_SAVED_CONST_INT
* 2 + 1];
3377 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3378 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3379 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3380 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3381 extern GTY(()) rtx const_true_rtx
;
3383 extern GTY(()) rtx const_tiny_rtx
[4][(int) MAX_MACHINE_MODE
];
3385 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3386 same as VOIDmode. */
3388 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3390 /* Likewise, for the constants 1 and 2 and -1. */
3392 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3393 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3394 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3396 extern GTY(()) rtx pc_rtx
;
3397 extern GTY(()) rtx cc0_rtx
;
3398 extern GTY(()) rtx ret_rtx
;
3399 extern GTY(()) rtx simple_return_rtx
;
3400 extern GTY(()) rtx_insn
*invalid_insn_rtx
;
3402 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3403 is used to represent the frame pointer. This is because the
3404 hard frame pointer and the automatic variables are separated by an amount
3405 that cannot be determined until after register allocation. We can assume
3406 that in this case ELIMINABLE_REGS will be defined, one action of which
3407 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3408 #ifndef HARD_FRAME_POINTER_REGNUM
3409 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3412 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3413 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3414 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3417 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3418 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3419 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3422 /* Index labels for global_rtl. */
3423 enum global_rtl_index
3427 /* For register elimination to work properly these hard_frame_pointer_rtx,
3428 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3429 the same register. */
3430 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3431 GR_ARG_POINTER
= GR_FRAME_POINTER
,
3433 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3434 GR_HARD_FRAME_POINTER
= GR_FRAME_POINTER
,
3436 GR_HARD_FRAME_POINTER
,
3438 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3439 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3440 GR_ARG_POINTER
= GR_HARD_FRAME_POINTER
,
3445 GR_VIRTUAL_INCOMING_ARGS
,
3446 GR_VIRTUAL_STACK_ARGS
,
3447 GR_VIRTUAL_STACK_DYNAMIC
,
3448 GR_VIRTUAL_OUTGOING_ARGS
,
3450 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY
,
3455 /* Target-dependent globals. */
3456 struct GTY(()) target_rtl
{
3457 /* All references to the hard registers in global_rtl_index go through
3458 these unique rtl objects. On machines where the frame-pointer and
3459 arg-pointer are the same register, they use the same unique object.
3461 After register allocation, other rtl objects which used to be pseudo-regs
3462 may be clobbered to refer to the frame-pointer register.
3463 But references that were originally to the frame-pointer can be
3464 distinguished from the others because they contain frame_pointer_rtx.
3466 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3467 tricky: until register elimination has taken place hard_frame_pointer_rtx
3468 should be used if it is being set, and frame_pointer_rtx otherwise. After
3469 register elimination hard_frame_pointer_rtx should always be used.
3470 On machines where the two registers are same (most) then these are the
3472 rtx x_global_rtl
[GR_MAX
];
3474 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3475 rtx x_pic_offset_table_rtx
;
3477 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3478 This is used to implement __builtin_return_address for some machines;
3479 see for instance the MIPS port. */
3480 rtx x_return_address_pointer_rtx
;
3482 /* Commonly used RTL for hard registers. These objects are not
3483 necessarily unique, so we allocate them separately from global_rtl.
3484 They are initialized once per compilation unit, then copied into
3485 regno_reg_rtx at the beginning of each function. */
3486 rtx x_initial_regno_reg_rtx
[FIRST_PSEUDO_REGISTER
];
3488 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3489 rtx x_top_of_stack
[MAX_MACHINE_MODE
];
3491 /* Static hunks of RTL used by the aliasing code; these are treated
3492 as persistent to avoid unnecessary RTL allocations. */
3493 rtx x_static_reg_base_value
[FIRST_PSEUDO_REGISTER
];
3495 /* The default memory attributes for each mode. */
3496 struct mem_attrs
*x_mode_mem_attrs
[(int) MAX_MACHINE_MODE
];
3498 /* Track if RTL has been initialized. */
3499 bool target_specific_initialized
;
3502 extern GTY(()) struct target_rtl default_target_rtl
;
3503 #if SWITCHABLE_TARGET
3504 extern struct target_rtl
*this_target_rtl
;
3506 #define this_target_rtl (&default_target_rtl)
3509 #define global_rtl \
3510 (this_target_rtl->x_global_rtl)
3511 #define pic_offset_table_rtx \
3512 (this_target_rtl->x_pic_offset_table_rtx)
3513 #define return_address_pointer_rtx \
3514 (this_target_rtl->x_return_address_pointer_rtx)
3515 #define top_of_stack \
3516 (this_target_rtl->x_top_of_stack)
3517 #define mode_mem_attrs \
3518 (this_target_rtl->x_mode_mem_attrs)
3520 /* All references to certain hard regs, except those created
3521 by allocating pseudo regs into them (when that's possible),
3522 go through these unique rtx objects. */
3523 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3524 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3525 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3526 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3528 #ifndef GENERATOR_FILE
3529 /* Return the attributes of a MEM rtx. */
3530 static inline const struct mem_attrs
*
3531 get_mem_attrs (const_rtx x
)
3533 struct mem_attrs
*attrs
;
3535 attrs
= MEM_ATTRS (x
);
3537 attrs
= mode_mem_attrs
[(int) GET_MODE (x
)];
3542 /* Include the RTL generation functions. */
3544 #ifndef GENERATOR_FILE
3546 #undef gen_rtx_ASM_INPUT
3547 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3548 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3549 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3550 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3553 /* There are some RTL codes that require special attention; the
3554 generation functions included above do the raw handling. If you
3555 add to this list, modify special_rtx in gengenrtl.c as well. */
3557 extern rtx_expr_list
*gen_rtx_EXPR_LIST (machine_mode
, rtx
, rtx
);
3558 extern rtx_insn_list
*gen_rtx_INSN_LIST (machine_mode
, rtx
, rtx
);
3560 gen_rtx_INSN (machine_mode mode
, rtx_insn
*prev_insn
, rtx_insn
*next_insn
,
3561 basic_block bb
, rtx pattern
, int location
, int code
,
3563 extern rtx
gen_rtx_CONST_INT (machine_mode
, HOST_WIDE_INT
);
3564 extern rtx
gen_rtx_CONST_VECTOR (machine_mode
, rtvec
);
3565 extern void set_mode_and_regno (rtx
, machine_mode
, unsigned int);
3566 extern rtx
gen_raw_REG (machine_mode
, unsigned int);
3567 extern rtx
gen_rtx_REG (machine_mode
, unsigned int);
3568 extern rtx
gen_rtx_SUBREG (machine_mode
, rtx
, int);
3569 extern rtx
gen_rtx_MEM (machine_mode
, rtx
);
3570 extern rtx
gen_rtx_VAR_LOCATION (machine_mode
, tree
, rtx
,
3571 enum var_init_status
);
3573 #ifdef GENERATOR_FILE
3574 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
3577 PUT_MODE (rtx x
, machine_mode mode
)
3580 set_mode_and_regno (x
, mode
, REGNO (x
));
3582 PUT_MODE_RAW (x
, mode
);
3586 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3588 /* Virtual registers are used during RTL generation to refer to locations into
3589 the stack frame when the actual location isn't known until RTL generation
3590 is complete. The routine instantiate_virtual_regs replaces these with
3591 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3594 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3596 /* This points to the first word of the incoming arguments passed on the stack,
3597 either by the caller or by the callee when pretending it was passed by the
3600 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3602 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3604 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3605 variable on the stack. Otherwise, it points to the first variable on
3608 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3610 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3612 /* This points to the location of dynamically-allocated memory on the stack
3613 immediately after the stack pointer has been adjusted by the amount
3616 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3618 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3620 /* This points to the location in the stack at which outgoing arguments should
3621 be written when the stack is pre-pushed (arguments pushed using push
3622 insns always use sp). */
3624 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3626 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3628 /* This points to the Canonical Frame Address of the function. This
3629 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3630 but is calculated relative to the arg pointer for simplicity; the
3631 frame pointer nor stack pointer are necessarily fixed relative to
3632 the CFA until after reload. */
3634 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3636 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3638 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3640 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3643 #define virtual_preferred_stack_boundary_rtx \
3644 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3646 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3647 ((FIRST_VIRTUAL_REGISTER) + 5)
3649 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3651 /* Nonzero if REGNUM is a pointer into the stack frame. */
3652 #define REGNO_PTR_FRAME_P(REGNUM) \
3653 ((REGNUM) == STACK_POINTER_REGNUM \
3654 || (REGNUM) == FRAME_POINTER_REGNUM \
3655 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3656 || (REGNUM) == ARG_POINTER_REGNUM \
3657 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3658 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3660 /* REGNUM never really appearing in the INSN stream. */
3661 #define INVALID_REGNUM (~(unsigned int) 0)
3663 /* REGNUM for which no debug information can be generated. */
3664 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3666 extern rtx
output_constant_def (tree
, int);
3667 extern rtx
lookup_constant_def (tree
);
3669 /* Nonzero after end of reload pass.
3670 Set to 1 or 0 by reload1.c. */
3672 extern int reload_completed
;
3674 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3675 extern int epilogue_completed
;
3677 /* Set to 1 while reload_as_needed is operating.
3678 Required by some machines to handle any generated moves differently. */
3680 extern int reload_in_progress
;
3682 /* Set to 1 while in lra. */
3683 extern int lra_in_progress
;
3685 /* This macro indicates whether you may create a new
3688 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3691 /* Nonzero after end of regstack pass.
3692 Set to 1 or 0 by reg-stack.c. */
3693 extern int regstack_completed
;
3696 /* If this is nonzero, we do not bother generating VOLATILE
3697 around volatile memory references, and we are willing to
3698 output indirect addresses. If cse is to follow, we reject
3699 indirect addresses so a useful potential cse is generated;
3700 if it is used only once, instruction combination will produce
3701 the same indirect address eventually. */
3702 extern int cse_not_expected
;
3704 /* Translates rtx code to tree code, for those codes needed by
3705 real_arithmetic. The function returns an int because the caller may not
3706 know what `enum tree_code' means. */
3708 extern int rtx_to_tree_code (enum rtx_code
);
3711 extern int delete_trivially_dead_insns (rtx_insn
*, int);
3712 extern int exp_equiv_p (const_rtx
, const_rtx
, int, bool);
3713 extern unsigned hash_rtx (const_rtx x
, machine_mode
, int *, int *, bool);
3716 extern bool check_for_inc_dec (rtx_insn
*insn
);
3719 extern int comparison_dominates_p (enum rtx_code
, enum rtx_code
);
3720 extern bool jump_to_label_p (const rtx_insn
*);
3721 extern int condjump_p (const rtx_insn
*);
3722 extern int any_condjump_p (const rtx_insn
*);
3723 extern int any_uncondjump_p (const rtx_insn
*);
3724 extern rtx
pc_set (const rtx_insn
*);
3725 extern rtx
condjump_label (const rtx_insn
*);
3726 extern int simplejump_p (const rtx_insn
*);
3727 extern int returnjump_p (const rtx_insn
*);
3728 extern int eh_returnjump_p (rtx_insn
*);
3729 extern int onlyjump_p (const rtx_insn
*);
3730 extern int only_sets_cc0_p (const_rtx
);
3731 extern int sets_cc0_p (const_rtx
);
3732 extern int invert_jump_1 (rtx_jump_insn
*, rtx
);
3733 extern int invert_jump (rtx_jump_insn
*, rtx
, int);
3734 extern int rtx_renumbered_equal_p (const_rtx
, const_rtx
);
3735 extern int true_regnum (const_rtx
);
3736 extern unsigned int reg_or_subregno (const_rtx
);
3737 extern int redirect_jump_1 (rtx_insn
*, rtx
);
3738 extern void redirect_jump_2 (rtx_jump_insn
*, rtx
, rtx
, int, int);
3739 extern int redirect_jump (rtx_jump_insn
*, rtx
, int);
3740 extern void rebuild_jump_labels (rtx_insn
*);
3741 extern void rebuild_jump_labels_chain (rtx_insn
*);
3742 extern rtx
reversed_comparison (const_rtx
, machine_mode
);
3743 extern enum rtx_code
reversed_comparison_code (const_rtx
, const rtx_insn
*);
3744 extern enum rtx_code
reversed_comparison_code_parts (enum rtx_code
, const_rtx
,
3745 const_rtx
, const rtx_insn
*);
3746 extern void delete_for_peephole (rtx_insn
*, rtx_insn
*);
3747 extern int condjump_in_parallel_p (const rtx_insn
*);
3749 /* In emit-rtl.c. */
3750 extern int max_reg_num (void);
3751 extern int max_label_num (void);
3752 extern int get_first_label_num (void);
3753 extern void maybe_set_first_label_num (rtx_code_label
*);
3754 extern void delete_insns_since (rtx_insn
*);
3755 extern void mark_reg_pointer (rtx
, int);
3756 extern void mark_user_reg (rtx
);
3757 extern void reset_used_flags (rtx
);
3758 extern void set_used_flags (rtx
);
3759 extern void reorder_insns (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3760 extern void reorder_insns_nobb (rtx_insn
*, rtx_insn
*, rtx_insn
*);
3761 extern int get_max_insn_count (void);
3762 extern int in_sequence_p (void);
3763 extern void init_emit (void);
3764 extern void init_emit_regs (void);
3765 extern void init_derived_machine_modes (void);
3766 extern void init_emit_once (void);
3767 extern void push_topmost_sequence (void);
3768 extern void pop_topmost_sequence (void);
3769 extern void set_new_first_and_last_insn (rtx_insn
*, rtx_insn
*);
3770 extern unsigned int unshare_all_rtl (void);
3771 extern void unshare_all_rtl_again (rtx_insn
*);
3772 extern void unshare_all_rtl_in_chain (rtx_insn
*);
3773 extern void verify_rtl_sharing (void);
3774 extern void add_insn (rtx_insn
*);
3775 extern void add_insn_before (rtx
, rtx
, basic_block
);
3776 extern void add_insn_after (rtx
, rtx
, basic_block
);
3777 extern void remove_insn (rtx
);
3778 extern rtx_insn
*emit (rtx
, bool = true);
3779 extern void emit_insn_at_entry (rtx
);
3780 extern rtx
gen_lowpart_SUBREG (machine_mode
, rtx
);
3781 extern rtx
gen_const_mem (machine_mode
, rtx
);
3782 extern rtx
gen_frame_mem (machine_mode
, rtx
);
3783 extern rtx
gen_tmp_stack_mem (machine_mode
, rtx
);
3784 extern bool validate_subreg (machine_mode
, machine_mode
,
3785 const_rtx
, unsigned int);
3788 extern unsigned int extended_count (const_rtx
, machine_mode
, int);
3789 extern rtx
remove_death (unsigned int, rtx_insn
*);
3790 extern void dump_combine_stats (FILE *);
3791 extern void dump_combine_total_stats (FILE *);
3792 extern rtx
make_compound_operation (rtx
, enum rtx_code
);
3794 /* In sched-rgn.c. */
3795 extern void schedule_insns (void);
3797 /* In sched-ebb.c. */
3798 extern void schedule_ebbs (void);
3800 /* In sel-sched-dump.c. */
3801 extern void sel_sched_fix_param (const char *param
, const char *val
);
3803 /* In print-rtl.c */
3804 extern const char *print_rtx_head
;
3805 extern void debug (const rtx_def
&ref
);
3806 extern void debug (const rtx_def
*ptr
);
3807 extern void debug_rtx (const_rtx
);
3808 extern void debug_rtx_list (const rtx_insn
*, int);
3809 extern void debug_rtx_range (const rtx_insn
*, const rtx_insn
*);
3810 extern const rtx_insn
*debug_rtx_find (const rtx_insn
*, int);
3811 extern void print_mem_expr (FILE *, const_tree
);
3812 extern void print_rtl (FILE *, const_rtx
);
3813 extern void print_simple_rtl (FILE *, const_rtx
);
3814 extern int print_rtl_single (FILE *, const_rtx
);
3815 extern int print_rtl_single_with_indent (FILE *, const_rtx
, int);
3816 extern void print_inline_rtx (FILE *, const_rtx
, int);
3819 extern void expand_null_return (void);
3820 extern void expand_naked_return (void);
3821 extern void emit_jump (rtx
);
3824 extern rtx
move_by_pieces (rtx
, rtx
, unsigned HOST_WIDE_INT
,
3826 extern HOST_WIDE_INT
find_args_size_adjust (rtx_insn
*);
3827 extern int fixup_args_size_notes (rtx_insn
*, rtx_insn
*, int);
3830 extern void init_expmed (void);
3831 extern void expand_inc (rtx
, rtx
);
3832 extern void expand_dec (rtx
, rtx
);
3834 /* In lower-subreg.c */
3835 extern void init_lower_subreg (void);
3838 extern bool can_copy_p (machine_mode
);
3839 extern bool can_assign_to_reg_without_clobbers_p (rtx
, machine_mode
);
3840 extern rtx
fis_get_condition (rtx_insn
*);
3843 extern HARD_REG_SET eliminable_regset
;
3844 extern void mark_elimination (int, int);
3847 extern int reg_classes_intersect_p (reg_class_t
, reg_class_t
);
3848 extern int reg_class_subset_p (reg_class_t
, reg_class_t
);
3849 extern void globalize_reg (tree
, int);
3850 extern void init_reg_modes_target (void);
3851 extern void init_regs (void);
3852 extern void reinit_regs (void);
3853 extern void init_fake_stack_mems (void);
3854 extern void save_register_info (void);
3855 extern void init_reg_sets (void);
3856 extern void regclass (rtx
, int);
3857 extern void reg_scan (rtx_insn
*, unsigned int);
3858 extern void fix_register (const char *, int, int);
3859 extern const HARD_REG_SET
*valid_mode_changes_for_regno (unsigned int);
3862 extern int function_invariant_p (const_rtx
);
3872 LCT_RETURNS_TWICE
= 5
3875 extern rtx
emit_library_call_value_1 (int, rtx
, rtx
, enum libcall_type
,
3876 machine_mode
, int, rtx_mode_t
*);
3878 /* Output a library call and discard the returned value. FUN is the
3879 address of the function, as a SYMBOL_REF rtx, and OUTMODE is the mode
3880 of the (discarded) return value. FN_TYPE is LCT_NORMAL for `normal'
3881 calls, LCT_CONST for `const' calls, LCT_PURE for `pure' calls, or
3882 another LCT_ value for other types of library calls.
3884 There are different overloads of this function for different numbers
3885 of arguments. In each case the argument value is followed by its mode. */
3888 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
)
3890 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 0, NULL
);
3894 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
3895 rtx arg1
, machine_mode arg1_mode
)
3897 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
3898 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 1, args
);
3902 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
3903 rtx arg1
, machine_mode arg1_mode
,
3904 rtx arg2
, machine_mode arg2_mode
)
3906 rtx_mode_t args
[] = {
3907 rtx_mode_t (arg1
, arg1_mode
),
3908 rtx_mode_t (arg2
, arg2_mode
)
3910 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 2, args
);
3914 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
3915 rtx arg1
, machine_mode arg1_mode
,
3916 rtx arg2
, machine_mode arg2_mode
,
3917 rtx arg3
, machine_mode arg3_mode
)
3919 rtx_mode_t args
[] = {
3920 rtx_mode_t (arg1
, arg1_mode
),
3921 rtx_mode_t (arg2
, arg2_mode
),
3922 rtx_mode_t (arg3
, arg3_mode
)
3924 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 3, args
);
3928 emit_library_call (rtx fun
, libcall_type fn_type
, machine_mode outmode
,
3929 rtx arg1
, machine_mode arg1_mode
,
3930 rtx arg2
, machine_mode arg2_mode
,
3931 rtx arg3
, machine_mode arg3_mode
,
3932 rtx arg4
, machine_mode arg4_mode
)
3934 rtx_mode_t args
[] = {
3935 rtx_mode_t (arg1
, arg1_mode
),
3936 rtx_mode_t (arg2
, arg2_mode
),
3937 rtx_mode_t (arg3
, arg3_mode
),
3938 rtx_mode_t (arg4
, arg4_mode
)
3940 emit_library_call_value_1 (0, fun
, NULL_RTX
, fn_type
, outmode
, 4, args
);
3943 /* Like emit_library_call, but return the value produced by the call.
3944 Use VALUE to store the result if it is nonnull, otherwise pick a
3945 convenient location. */
3948 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
3949 machine_mode outmode
)
3951 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 0, NULL
);
3955 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
3956 machine_mode outmode
,
3957 rtx arg1
, machine_mode arg1_mode
)
3959 rtx_mode_t args
[] = { rtx_mode_t (arg1
, arg1_mode
) };
3960 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 1, args
);
3964 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
3965 machine_mode outmode
,
3966 rtx arg1
, machine_mode arg1_mode
,
3967 rtx arg2
, machine_mode arg2_mode
)
3969 rtx_mode_t args
[] = {
3970 rtx_mode_t (arg1
, arg1_mode
),
3971 rtx_mode_t (arg2
, arg2_mode
)
3973 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 2, args
);
3977 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
3978 machine_mode outmode
,
3979 rtx arg1
, machine_mode arg1_mode
,
3980 rtx arg2
, machine_mode arg2_mode
,
3981 rtx arg3
, machine_mode arg3_mode
)
3983 rtx_mode_t args
[] = {
3984 rtx_mode_t (arg1
, arg1_mode
),
3985 rtx_mode_t (arg2
, arg2_mode
),
3986 rtx_mode_t (arg3
, arg3_mode
)
3988 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 3, args
);
3992 emit_library_call_value (rtx fun
, rtx value
, libcall_type fn_type
,
3993 machine_mode outmode
,
3994 rtx arg1
, machine_mode arg1_mode
,
3995 rtx arg2
, machine_mode arg2_mode
,
3996 rtx arg3
, machine_mode arg3_mode
,
3997 rtx arg4
, machine_mode arg4_mode
)
3999 rtx_mode_t args
[] = {
4000 rtx_mode_t (arg1
, arg1_mode
),
4001 rtx_mode_t (arg2
, arg2_mode
),
4002 rtx_mode_t (arg3
, arg3_mode
),
4003 rtx_mode_t (arg4
, arg4_mode
)
4005 return emit_library_call_value_1 (1, fun
, value
, fn_type
, outmode
, 4, args
);
4009 extern void init_varasm_once (void);
4011 extern rtx
make_debug_expr_from_rtl (const_rtx
);
4014 #ifdef GENERATOR_FILE
4015 extern bool read_rtx (const char *, vec
<rtx
> *);
4019 extern rtx
canon_rtx (rtx
);
4020 extern int true_dependence (const_rtx
, machine_mode
, const_rtx
);
4021 extern rtx
get_addr (rtx
);
4022 extern int canon_true_dependence (const_rtx
, machine_mode
, rtx
,
4024 extern int read_dependence (const_rtx
, const_rtx
);
4025 extern int anti_dependence (const_rtx
, const_rtx
);
4026 extern int canon_anti_dependence (const_rtx
, bool,
4027 const_rtx
, machine_mode
, rtx
);
4028 extern int output_dependence (const_rtx
, const_rtx
);
4029 extern int canon_output_dependence (const_rtx
, bool,
4030 const_rtx
, machine_mode
, rtx
);
4031 extern int may_alias_p (const_rtx
, const_rtx
);
4032 extern void init_alias_target (void);
4033 extern void init_alias_analysis (void);
4034 extern void end_alias_analysis (void);
4035 extern void vt_equate_reg_base_value (const_rtx
, const_rtx
);
4036 extern bool memory_modified_in_insn_p (const_rtx
, const_rtx
);
4037 extern bool may_be_sp_based_p (rtx
);
4038 extern rtx
gen_hard_reg_clobber (machine_mode
, unsigned int);
4039 extern rtx
get_reg_known_value (unsigned int);
4040 extern bool get_reg_known_equiv_p (unsigned int);
4041 extern rtx
get_reg_base_value (unsigned int);
4044 extern int stack_regs_mentioned (const_rtx insn
);
4048 extern GTY(()) rtx stack_limit_rtx
;
4050 /* In var-tracking.c */
4051 extern unsigned int variable_tracking_main (void);
4053 /* In stor-layout.c. */
4054 extern void get_mode_bounds (scalar_int_mode
, int,
4055 scalar_int_mode
, rtx
*, rtx
*);
4058 extern rtx
canon_condition (rtx
);
4059 extern void simplify_using_condition (rtx
, rtx
*, bitmap
);
4062 extern unsigned int compute_alignments (void);
4063 extern void update_alignments (vec
<rtx
> &);
4064 extern int asm_str_count (const char *templ
);
4068 rtx (*gen_lowpart
) (machine_mode
, rtx
);
4069 rtx (*gen_lowpart_no_emit
) (machine_mode
, rtx
);
4070 rtx (*reg_nonzero_bits
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4071 unsigned HOST_WIDE_INT
*);
4072 rtx (*reg_num_sign_bit_copies
) (const_rtx
, scalar_int_mode
, scalar_int_mode
,
4074 bool (*reg_truncated_to_mode
) (machine_mode
, const_rtx
);
4076 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
4079 /* Each pass can provide its own. */
4080 extern struct rtl_hooks rtl_hooks
;
4082 /* ... but then it has to restore these. */
4083 extern const struct rtl_hooks general_rtl_hooks
;
4085 /* Keep this for the nonce. */
4086 #define gen_lowpart rtl_hooks.gen_lowpart
4088 extern void insn_locations_init (void);
4089 extern void insn_locations_finalize (void);
4090 extern void set_curr_insn_location (location_t
);
4091 extern location_t
curr_insn_location (void);
4094 extern void _fatal_insn_not_found (const_rtx
, const char *, int, const char *)
4095 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4096 extern void _fatal_insn (const char *, const_rtx
, const char *, int, const char *)
4097 ATTRIBUTE_NORETURN ATTRIBUTE_COLD
;
4099 #define fatal_insn(msgid, insn) \
4100 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
4101 #define fatal_insn_not_found(insn) \
4102 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
4105 extern tree
GTY(()) global_regs_decl
[FIRST_PSEUDO_REGISTER
];
4107 /* Information about the function that is propagated by the RTL backend.
4108 Available only for functions that has been already assembled. */
4110 struct GTY(()) cgraph_rtl_info
{
4111 unsigned int preferred_incoming_stack_boundary
;
4113 /* Call unsaved hard registers really used by the corresponding
4114 function (including ones used by functions called by the
4116 HARD_REG_SET function_used_regs
;
4117 /* Set if function_used_regs is valid. */
4118 unsigned function_used_regs_valid
: 1;
4121 /* If loads from memories of mode MODE always sign or zero extend,
4122 return SIGN_EXTEND or ZERO_EXTEND as appropriate. Return UNKNOWN
4126 load_extend_op (machine_mode mode
)
4128 scalar_int_mode int_mode
;
4129 if (is_a
<scalar_int_mode
> (mode
, &int_mode
)
4130 && GET_MODE_PRECISION (int_mode
) < BITS_PER_WORD
)
4131 return LOAD_EXTEND_OP (int_mode
);
4136 extern void gt_ggc_mx (rtx
&);
4137 extern void gt_pch_nx (rtx
&);
4138 extern void gt_pch_nx (rtx
&, gt_pointer_operator
, void *);
4140 #endif /* ! GCC_RTL_H */