1 /* Register Transfer Language (RTL) definitions for GCC
2 Copyright (C) 1987-2016 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
23 /* This file is occasionally included by generator files which expect
24 machmode.h and other files to exist and would not normally have been
25 included by coretypes.h. */
30 #include "double-int.h"
32 #include "fixed-value.h"
33 #include "statistics.h"
35 #include "hash-table.h"
39 #endif /* GENERATOR_FILE */
41 #include "hard-reg-set.h"
43 /* Value used by some passes to "recognize" noop moves as valid
45 #define NOOP_MOVE_INSN_CODE INT_MAX
47 /* Register Transfer Language EXPRESSIONS CODES */
49 #define RTX_CODE enum rtx_code
52 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
53 #include "rtl.def" /* rtl expressions are documented here */
56 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for
58 Assumes default enum value assignment. */
60 /* The cast here, saves many elsewhere. */
61 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
63 /* Similar, but since generator files get more entries... */
65 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
68 /* Register Transfer Language EXPRESSIONS CODE CLASSES */
71 /* We check bit 0-1 of some rtx class codes in the predicates below. */
73 /* Bit 0 = comparison if 0, arithmetic is 1
74 Bit 1 = 1 if commutative. */
80 /* Must follow the four preceding values. */
87 /* Bit 0 = 1 if constant. */
96 #define RTX_OBJ_MASK (~1)
97 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK)
98 #define RTX_COMPARE_MASK (~1)
99 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK)
100 #define RTX_ARITHMETIC_MASK (~1)
101 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK)
102 #define RTX_BINARY_MASK (~3)
103 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK)
104 #define RTX_COMMUTATIVE_MASK (~2)
105 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK)
106 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK)
108 extern const unsigned char rtx_length[NUM_RTX_CODE];
109 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
111 extern const char * const rtx_name[NUM_RTX_CODE];
112 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
114 extern const char * const rtx_format[NUM_RTX_CODE];
115 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
117 extern const enum rtx_class rtx_class[NUM_RTX_CODE];
118 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
120 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN
121 and NEXT_INSN fields). */
122 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE)
124 extern const unsigned char rtx_code_size[NUM_RTX_CODE];
125 extern const unsigned char rtx_next[NUM_RTX_CODE];
127 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
128 relative to which the offsets are calculated, as explained in rtl.def. */
129 struct addr_diff_vec_flags
131 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
132 unsigned min_align: 8;
134 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */
135 unsigned min_after_vec: 1; /* minimum address target label is
136 after the ADDR_DIFF_VEC. */
137 unsigned max_after_vec: 1; /* maximum address target label is
138 after the ADDR_DIFF_VEC. */
139 unsigned min_after_base: 1; /* minimum address target label is
141 unsigned max_after_base: 1; /* maximum address target label is
143 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
144 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
149 /* Structure used to describe the attributes of a MEM. These are hashed
150 so MEMs that the same attributes share a data structure. This means
151 they cannot be modified in place. */
152 struct GTY(()) mem_attrs
154 /* The expression that the MEM accesses, or null if not known.
155 This expression might be larger than the memory reference itself.
156 (In other words, the MEM might access only part of the object.) */
159 /* The offset of the memory reference from the start of EXPR.
160 Only valid if OFFSET_KNOWN_P. */
161 HOST_WIDE_INT offset;
163 /* The size of the memory reference in bytes. Only valid if
167 /* The alias set of the memory reference. */
168 alias_set_type alias;
170 /* The alignment of the reference in bits. Always a multiple of
171 BITS_PER_UNIT. Note that EXPR may have a stricter alignment
172 than the memory reference itself. */
175 /* The address space that the memory reference uses. */
176 unsigned char addrspace;
178 /* True if OFFSET is known. */
181 /* True if SIZE is known. */
185 /* Structure used to describe the attributes of a REG in similar way as
186 mem_attrs does for MEM above. Note that the OFFSET field is calculated
187 in the same way as for mem_attrs, rather than in the same way as a
188 SUBREG_BYTE. For example, if a big-endian target stores a byte
189 object in the low part of a 4-byte register, the OFFSET field
190 will be -3 rather than 0. */
192 struct GTY((for_user)) reg_attrs {
193 tree decl; /* decl corresponding to REG. */
194 HOST_WIDE_INT offset; /* Offset from start of DECL. */
197 /* Common union for an element of an rtx. */
202 unsigned int rt_uint;
206 machine_mode rt_type;
207 addr_diff_vec_flags rt_addr_diff_vec_flags;
208 struct cselib_val *rt_cselib;
212 struct constant_descriptor_rtx *rt_constant;
213 struct dw_cfi_node *rt_cfi;
216 /* Describes the properties of a REG. */
217 struct GTY(()) reg_info {
218 /* The value of REGNO. */
221 /* The value of REG_NREGS. */
222 unsigned int nregs : 8;
223 unsigned int unused : 24;
225 /* The value of REG_ATTRS. */
229 /* This structure remembers the position of a SYMBOL_REF within an
230 object_block structure. A SYMBOL_REF only provides this information
231 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
232 struct GTY(()) block_symbol {
233 /* The usual SYMBOL_REF fields. */
234 rtunion GTY ((skip)) fld[2];
236 /* The block that contains this object. */
237 struct object_block *block;
239 /* The offset of this object from the start of its block. It is negative
240 if the symbol has not yet been assigned an offset. */
241 HOST_WIDE_INT offset;
244 /* Describes a group of objects that are to be placed together in such
245 a way that their relative positions are known. */
246 struct GTY((for_user)) object_block {
247 /* The section in which these objects should be placed. */
250 /* The alignment of the first object, measured in bits. */
251 unsigned int alignment;
253 /* The total size of the objects, measured in bytes. */
256 /* The SYMBOL_REFs for each object. The vector is sorted in
257 order of increasing offset and the following conditions will
258 hold for each element X:
260 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
261 !SYMBOL_REF_ANCHOR_P (X)
262 SYMBOL_REF_BLOCK (X) == [address of this structure]
263 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
264 vec<rtx, va_gc> *objects;
266 /* All the anchor SYMBOL_REFs used to address these objects, sorted
267 in order of increasing offset, and then increasing TLS model.
268 The following conditions will hold for each element X in this vector:
270 SYMBOL_REF_HAS_BLOCK_INFO_P (X)
271 SYMBOL_REF_ANCHOR_P (X)
272 SYMBOL_REF_BLOCK (X) == [address of this structure]
273 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
274 vec<rtx, va_gc> *anchors;
277 struct GTY((variable_size)) hwivec_def {
278 HOST_WIDE_INT elem[1];
281 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
282 #define CWI_GET_NUM_ELEM(RTX) \
283 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
284 #define CWI_PUT_NUM_ELEM(RTX, NUM) \
285 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
287 /* RTL expression ("rtx"). */
289 /* The GTY "desc" and "tag" options below are a kludge: we need a desc
290 field for gengtype to recognize that inheritance is occurring,
291 so that all subclasses are redirected to the traversal hook for the
293 However, all of the fields are in the base class, and special-casing
294 is at work. Hence we use desc and tag of 0, generating a switch
295 statement of the form:
298 case 0: // all the work happens here
300 in order to work with the existing special-casing in gengtype. */
302 struct GTY((desc("0"), tag("0"),
303 chain_next ("RTX_NEXT (&%h)"),
304 chain_prev ("RTX_PREV (&%h)"))) rtx_def {
305 /* The kind of expression this is. */
306 ENUM_BITFIELD(rtx_code) code: 16;
308 /* The kind of value the expression has. */
309 ENUM_BITFIELD(machine_mode) mode : 8;
311 /* 1 in a MEM if we should keep the alias set for this mem unchanged
312 when we access a component.
313 1 in a JUMP_INSN if it is a crossing jump.
314 1 in a CALL_INSN if it is a sibling call.
315 1 in a SET that is for a return.
316 In a CODE_LABEL, part of the two-bit alternate entry field.
317 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c.
318 1 in a VALUE is SP_BASED_VALUE_P in cselib.c.
319 1 in a SUBREG generated by LRA for reload insns.
320 1 in a CALL for calls instrumented by Pointer Bounds Checker. */
321 unsigned int jump : 1;
322 /* In a CODE_LABEL, part of the two-bit alternate entry field.
323 1 in a MEM if it cannot trap.
324 1 in a CALL_INSN logically equivalent to
325 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
326 unsigned int call : 1;
327 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
328 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
329 1 in a SYMBOL_REF if it addresses something in the per-function
331 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
332 1 in a NOTE, or EXPR_LIST for a const call.
333 1 in a JUMP_INSN of an annulling branch.
334 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c.
335 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c.
336 1 in a clobber temporarily created for LRA. */
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 scheduling
349 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */
350 unsigned int volatil : 1;
351 /* 1 in a REG if the register is used only in exit code a loop.
352 1 in a SUBREG expression if was generated from a variable with a
354 1 in a CODE_LABEL if the label is used for nonlocal gotos
355 and must not be deleted even if its count is zero.
356 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
357 together with the preceding insn. Valid only within sched.
358 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
359 from the target of a branch. Valid from reorg until end of compilation;
362 The name of the field is historical. It used to be used in MEMs
363 to record whether the MEM accessed part of a structure. */
364 unsigned int in_struct : 1;
365 /* At the end of RTL generation, 1 if this rtx is used. This is used for
366 copying shared structure. See `unshare_all_rtl'.
367 In a REG, this is not needed for that purpose, and used instead
368 in `leaf_renumber_regs_insn'.
369 1 in a SYMBOL_REF, means that emit_library_call
370 has used it as the function.
371 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c.
372 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */
373 unsigned int used : 1;
374 /* 1 in an INSN or a SET if this rtx is related to the call frame,
375 either changing how we compute the frame address or saving and
376 restoring registers in the prologue and epilogue.
377 1 in a REG or MEM if it is a pointer.
378 1 in a SYMBOL_REF if it addresses something in the per-function
379 constant string pool.
380 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */
381 unsigned frame_related : 1;
382 /* 1 in a REG or PARALLEL that is the current function's return value.
383 1 in a SYMBOL_REF for a weak symbol.
384 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
385 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c.
386 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */
387 unsigned return_val : 1;
390 /* The final union field is aligned to 64 bits on LP64 hosts,
391 giving a 32-bit gap after the fields above. We optimize the
392 layout for that case and use the gap for extra code-specific
395 /* The ORIGINAL_REGNO of a REG. */
396 unsigned int original_regno;
398 /* The INSN_UID of an RTX_INSN-class code. */
401 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
402 unsigned int symbol_ref_flags;
404 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
405 enum var_init_status var_location_status;
407 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
408 HOST_WIDE_INTs in the hwivec_def. */
409 unsigned int num_elem;
412 /* The first element of the operands of this rtx.
413 The number of operands and their types are controlled
414 by the `code' field, according to rtl.def. */
417 HOST_WIDE_INT hwint[1];
419 struct block_symbol block_sym;
420 struct real_value rv;
421 struct fixed_value fv;
422 struct hwivec_def hwiv;
423 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
426 /* A node for constructing singly-linked lists of rtx. */
428 class GTY(()) rtx_expr_list : public rtx_def
430 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
433 /* Get next in list. */
434 rtx_expr_list *next () const;
436 /* Get at the underlying rtx. */
437 rtx element () const;
443 is_a_helper <rtx_expr_list *>::test (rtx rt)
445 return rt->code == EXPR_LIST;
448 class GTY(()) rtx_insn_list : public rtx_def
450 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
452 This is an instance of:
454 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
456 i.e. a node for constructing singly-linked lists of rtx_insn *, where
457 the list is "external" to the insn (as opposed to the doubly-linked
458 list embedded within rtx_insn itself). */
461 /* Get next in list. */
462 rtx_insn_list *next () const;
464 /* Get at the underlying instruction. */
465 rtx_insn *insn () const;
472 is_a_helper <rtx_insn_list *>::test (rtx rt)
474 return rt->code == INSN_LIST;
477 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
478 typically (but not always) of rtx_insn *, used in the late passes. */
480 class GTY(()) rtx_sequence : public rtx_def
482 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
485 /* Get number of elements in sequence. */
488 /* Get i-th element of the sequence. */
489 rtx element (int index) const;
491 /* Get i-th element of the sequence, with a checked cast to
493 rtx_insn *insn (int index) const;
499 is_a_helper <rtx_sequence *>::test (rtx rt)
501 return rt->code == SEQUENCE;
507 is_a_helper <const rtx_sequence *>::test (const_rtx rt)
509 return rt->code == SEQUENCE;
512 class GTY(()) rtx_insn : public rtx_def
515 /* No extra fields, but adds the invariant:
519 || JUMP_TABLE_DATA_P (X)
523 i.e. that we must be able to use the following:
527 i.e. we have an rtx that has an INSN_UID field and can be part of
528 a linked list of insns.
531 /* Returns true if this insn has been deleted. */
533 bool deleted () const { return volatil; }
535 /* Mark this insn as deleted. */
537 void set_deleted () { volatil = true; }
539 /* Mark this insn as not deleted. */
541 void set_undeleted () { volatil = false; }
544 /* Subclasses of rtx_insn. */
546 class GTY(()) rtx_debug_insn : public rtx_insn
548 /* No extra fields, but adds the invariant:
549 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
550 i.e. an annotation for tracking variable assignments.
552 This is an instance of:
553 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN)
557 class GTY(()) rtx_nonjump_insn : public rtx_insn
559 /* No extra fields, but adds the invariant:
560 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
561 i.e an instruction that cannot jump.
563 This is an instance of:
564 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN)
568 class GTY(()) rtx_jump_insn : public rtx_insn
571 /* No extra fields, but adds the invariant:
572 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
573 i.e. an instruction that can possibly jump.
575 This is an instance of:
576 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN)
579 /* Returns jump target of this instruction. The returned value is not
580 necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
581 expression. Also, when the code label is marked "deleted", it is
582 replaced by a NOTE. In some cases the value is NULL_RTX. */
584 inline rtx jump_label () const;
586 /* Returns jump target cast to rtx_code_label *. */
588 inline rtx_code_label *jump_target () const;
590 /* Set jump target. */
592 inline void set_jump_target (rtx_code_label *);
595 class GTY(()) rtx_call_insn : public rtx_insn
597 /* No extra fields, but adds the invariant:
598 CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
599 i.e. an instruction that can possibly call a subroutine
600 but which will not change which instruction comes next
601 in the current function.
603 This is an instance of:
604 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN)
608 class GTY(()) rtx_jump_table_data : public rtx_insn
610 /* No extra fields, but adds the invariant:
611 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
612 i.e. a data for a jump table, considered an instruction for
615 This is an instance of:
616 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
621 /* This can be either:
623 (a) a table of absolute jumps, in which case PATTERN (this) is an
624 ADDR_VEC with arg 0 a vector of labels, or
626 (b) a table of relative jumps (e.g. for -fPIC), in which case
627 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
628 arg 1 the vector of labels.
630 This method gets the underlying vec. */
632 inline rtvec get_labels () const;
635 class GTY(()) rtx_barrier : public rtx_insn
637 /* No extra fields, but adds the invariant:
638 BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
639 i.e. a marker that indicates that control will not flow through.
641 This is an instance of:
642 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
646 class GTY(()) rtx_code_label : public rtx_insn
648 /* No extra fields, but adds the invariant:
649 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
650 i.e. a label in the assembler.
652 This is an instance of:
653 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
657 class GTY(()) rtx_note : public rtx_insn
659 /* No extra fields, but adds the invariant:
660 NOTE_P(X) aka (GET_CODE (X) == NOTE)
661 i.e. a note about the corresponding source code.
663 This is an instance of:
664 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
668 /* The size in bytes of an rtx header (code, mode and flags). */
669 #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
671 /* The size in bytes of an rtx with code CODE. */
672 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
674 #define NULL_RTX (rtx) 0
676 /* The "next" and "previous" RTX, relative to this one. */
678 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
679 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
681 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
683 #define RTX_PREV(X) ((INSN_P (X) \
685 || JUMP_TABLE_DATA_P (X) \
688 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
689 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
690 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
692 /* Define macros to access the `code' field of the rtx. */
694 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
695 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
697 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
698 #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
700 /* RTL vector. These appear inside RTX's when there is a need
701 for a variable number of things. The principle use is inside
702 PARALLEL expressions. */
704 struct GTY(()) rtvec_def {
705 int num_elem; /* number of elements */
706 rtx GTY ((length ("%h.num_elem"))) elem[1];
709 #define NULL_RTVEC (rtvec) 0
711 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
712 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
714 /* Predicate yielding nonzero iff X is an rtx for a register. */
715 #define REG_P(X) (GET_CODE (X) == REG)
717 /* Predicate yielding nonzero iff X is an rtx for a memory location. */
718 #define MEM_P(X) (GET_CODE (X) == MEM)
720 #if TARGET_SUPPORTS_WIDE_INT
722 /* Match CONST_*s that can represent compile-time constant integers. */
723 #define CASE_CONST_SCALAR_INT \
727 /* Match CONST_*s for which pointer equality corresponds to value
729 #define CASE_CONST_UNIQUE \
731 case CONST_WIDE_INT: \
735 /* Match all CONST_* rtxes. */
736 #define CASE_CONST_ANY \
738 case CONST_WIDE_INT: \
745 /* Match CONST_*s that can represent compile-time constant integers. */
746 #define CASE_CONST_SCALAR_INT \
750 /* Match CONST_*s for which pointer equality corresponds to value
752 #define CASE_CONST_UNIQUE \
757 /* Match all CONST_* rtxes. */
758 #define CASE_CONST_ANY \
765 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
766 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
768 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
769 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
771 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
772 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
774 /* Predicate yielding true iff X is an rtx for a double-int
775 or floating point constant. */
776 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
778 /* Predicate yielding true iff X is an rtx for a double-int. */
779 #define CONST_DOUBLE_AS_INT_P(X) \
780 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
782 /* Predicate yielding true iff X is an rtx for a integer const. */
783 #if TARGET_SUPPORTS_WIDE_INT
784 #define CONST_SCALAR_INT_P(X) \
785 (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
787 #define CONST_SCALAR_INT_P(X) \
788 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
791 /* Predicate yielding true iff X is an rtx for a double-int. */
792 #define CONST_DOUBLE_AS_FLOAT_P(X) \
793 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
795 /* Predicate yielding nonzero iff X is a label insn. */
796 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
798 /* Predicate yielding nonzero iff X is a jump insn. */
799 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
801 /* Predicate yielding nonzero iff X is a call insn. */
802 #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
804 /* Predicate yielding nonzero iff X is an insn that cannot jump. */
805 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
807 /* Predicate yielding nonzero iff X is a debug note/insn. */
808 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
810 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
811 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X))
813 /* Nonzero if DEBUG_INSN_P may possibly hold. */
814 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments)
816 /* Predicate yielding nonzero iff X is a real insn. */
818 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))
820 /* Predicate yielding nonzero iff X is a note insn. */
821 #define NOTE_P(X) (GET_CODE (X) == NOTE)
823 /* Predicate yielding nonzero iff X is a barrier insn. */
824 #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
826 /* Predicate yielding nonzero iff X is a data for a jump table. */
827 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
829 /* Predicate yielding nonzero iff RTX is a subreg. */
830 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
832 /* Predicate yielding true iff RTX is a symbol ref. */
833 #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
838 is_a_helper <rtx_insn *>::test (rtx rt)
842 || JUMP_TABLE_DATA_P (rt)
850 is_a_helper <const rtx_insn *>::test (const_rtx rt)
854 || JUMP_TABLE_DATA_P (rt)
862 is_a_helper <rtx_debug_insn *>::test (rtx rt)
864 return DEBUG_INSN_P (rt);
870 is_a_helper <rtx_nonjump_insn *>::test (rtx rt)
872 return NONJUMP_INSN_P (rt);
878 is_a_helper <rtx_jump_insn *>::test (rtx rt)
886 is_a_helper <rtx_jump_insn *>::test (rtx_insn *insn)
888 return JUMP_P (insn);
894 is_a_helper <rtx_call_insn *>::test (rtx rt)
902 is_a_helper <rtx_call_insn *>::test (rtx_insn *insn)
904 return CALL_P (insn);
910 is_a_helper <rtx_jump_table_data *>::test (rtx rt)
912 return JUMP_TABLE_DATA_P (rt);
918 is_a_helper <rtx_jump_table_data *>::test (rtx_insn *insn)
920 return JUMP_TABLE_DATA_P (insn);
926 is_a_helper <rtx_barrier *>::test (rtx rt)
928 return BARRIER_P (rt);
934 is_a_helper <rtx_code_label *>::test (rtx rt)
942 is_a_helper <rtx_code_label *>::test (rtx_insn *insn)
944 return LABEL_P (insn);
950 is_a_helper <rtx_note *>::test (rtx rt)
958 is_a_helper <rtx_note *>::test (rtx_insn *insn)
960 return NOTE_P (insn);
963 /* Predicate yielding nonzero iff X is a return or simple_return. */
964 #define ANY_RETURN_P(X) \
965 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
967 /* 1 if X is a unary operator. */
970 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
972 /* 1 if X is a binary operator. */
974 #define BINARY_P(X) \
975 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
977 /* 1 if X is an arithmetic operator. */
979 #define ARITHMETIC_P(X) \
980 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
981 == RTX_ARITHMETIC_RESULT)
983 /* 1 if X is an arithmetic operator. */
985 #define COMMUTATIVE_ARITH_P(X) \
986 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
988 /* 1 if X is a commutative arithmetic operator or a comparison operator.
989 These two are sometimes selected together because it is possible to
990 swap the two operands. */
992 #define SWAPPABLE_OPERANDS_P(X) \
993 ((1 << GET_RTX_CLASS (GET_CODE (X))) \
994 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
995 | (1 << RTX_COMPARE)))
997 /* 1 if X is a non-commutative operator. */
999 #define NON_COMMUTATIVE_P(X) \
1000 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1001 == RTX_NON_COMMUTATIVE_RESULT)
1003 /* 1 if X is a commutative operator on integers. */
1005 #define COMMUTATIVE_P(X) \
1006 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1007 == RTX_COMMUTATIVE_RESULT)
1009 /* 1 if X is a relational operator. */
1011 #define COMPARISON_P(X) \
1012 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1014 /* 1 if X is a constant value that is an integer. */
1016 #define CONSTANT_P(X) \
1017 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1019 /* 1 if X can be used to represent an object. */
1020 #define OBJECT_P(X) \
1021 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1023 /* General accessor macros for accessing the fields of an rtx. */
1025 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1026 /* The bit with a star outside the statement expr and an & inside is
1027 so that N can be evaluated only once. */
1028 #define RTL_CHECK1(RTX, N, C1) __extension__ \
1029 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1030 const enum rtx_code _code = GET_CODE (_rtx); \
1031 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1032 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1034 if (GET_RTX_FORMAT (_code)[_n] != C1) \
1035 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1037 &_rtx->u.fld[_n]; }))
1039 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1040 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1041 const enum rtx_code _code = GET_CODE (_rtx); \
1042 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1043 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1045 if (GET_RTX_FORMAT (_code)[_n] != C1 \
1046 && GET_RTX_FORMAT (_code)[_n] != C2) \
1047 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1049 &_rtx->u.fld[_n]; }))
1051 #define RTL_CHECKC1(RTX, N, C) __extension__ \
1052 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1053 if (GET_CODE (_rtx) != (C)) \
1054 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1056 &_rtx->u.fld[_n]; }))
1058 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1059 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1060 const enum rtx_code _code = GET_CODE (_rtx); \
1061 if (_code != (C1) && _code != (C2)) \
1062 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1064 &_rtx->u.fld[_n]; }))
1066 #define RTVEC_ELT(RTVEC, I) __extension__ \
1067 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1068 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1069 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1071 &_rtvec->elem[_i]; }))
1073 #define XWINT(RTX, N) __extension__ \
1074 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1075 const enum rtx_code _code = GET_CODE (_rtx); \
1076 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1077 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1079 if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1080 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1082 &_rtx->u.hwint[_n]; }))
1084 #define CWI_ELT(RTX, I) __extension__ \
1085 (*({ __typeof (RTX) const _cwi = (RTX); \
1086 int _max = CWI_GET_NUM_ELEM (_cwi); \
1087 const int _i = (I); \
1088 if (_i < 0 || _i >= _max) \
1089 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1091 &_cwi->u.hwiv.elem[_i]; }))
1093 #define XCWINT(RTX, N, C) __extension__ \
1094 (*({ __typeof (RTX) const _rtx = (RTX); \
1095 if (GET_CODE (_rtx) != (C)) \
1096 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1098 &_rtx->u.hwint[N]; }))
1100 #define XCMWINT(RTX, N, C, M) __extension__ \
1101 (*({ __typeof (RTX) const _rtx = (RTX); \
1102 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1103 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1104 __LINE__, __FUNCTION__); \
1105 &_rtx->u.hwint[N]; }))
1107 #define XCNMPRV(RTX, C, M) __extension__ \
1108 ({ __typeof (RTX) const _rtx = (RTX); \
1109 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1110 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1111 __LINE__, __FUNCTION__); \
1114 #define XCNMPFV(RTX, C, M) __extension__ \
1115 ({ __typeof (RTX) const _rtx = (RTX); \
1116 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1117 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1118 __LINE__, __FUNCTION__); \
1121 #define REG_CHECK(RTX) __extension__ \
1122 ({ __typeof (RTX) const _rtx = (RTX); \
1123 if (GET_CODE (_rtx) != REG) \
1124 rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1128 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1129 ({ __typeof (RTX) const _symbol = (RTX); \
1130 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1131 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1132 rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1134 &_symbol->u.block_sym; })
1136 #define HWIVEC_CHECK(RTX,C) __extension__ \
1137 ({ __typeof (RTX) const _symbol = (RTX); \
1138 RTL_CHECKC1 (_symbol, 0, C); \
1139 &_symbol->u.hwiv; })
1141 extern void rtl_check_failed_bounds (const_rtx, int, const char *, int,
1144 extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int,
1147 extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *,
1150 extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *,
1153 extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code,
1154 const char *, int, const char *)
1156 extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, machine_mode,
1157 bool, const char *, int, const char *)
1159 extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1161 extern void cwi_check_failed_bounds (const_rtx, int, const char *, int,
1164 extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int,
1168 #else /* not ENABLE_RTL_CHECKING */
1170 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1171 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1172 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1173 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1174 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1175 #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1176 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1177 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1178 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1179 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1180 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1181 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1182 #define REG_CHECK(RTX) (&(RTX)->u.reg)
1183 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1184 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1188 /* General accessor macros for accessing the flags of an rtx. */
1190 /* Access an individual rtx flag, with no checking of any kind. */
1191 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1193 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1194 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1195 ({ __typeof (RTX) const _rtx = (RTX); \
1196 if (GET_CODE (_rtx) != C1) \
1197 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1201 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1202 ({ __typeof (RTX) const _rtx = (RTX); \
1203 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1204 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1208 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1209 ({ __typeof (RTX) const _rtx = (RTX); \
1210 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1211 && GET_CODE (_rtx) != C3) \
1212 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1216 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1217 ({ __typeof (RTX) const _rtx = (RTX); \
1218 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1219 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1220 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1224 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1225 ({ __typeof (RTX) const _rtx = (RTX); \
1226 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1227 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1228 && GET_CODE (_rtx) != C5) \
1229 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1233 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1235 ({ __typeof (RTX) const _rtx = (RTX); \
1236 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1237 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1238 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1239 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1243 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1245 ({ __typeof (RTX) const _rtx = (RTX); \
1246 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1247 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1248 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1249 && GET_CODE (_rtx) != C7) \
1250 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1254 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1256 ({ __typeof (RTX) const _rtx = (RTX); \
1257 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1258 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1262 extern void rtl_check_failed_flag (const char *, const_rtx, const char *,
1267 #else /* not ENABLE_RTL_FLAG_CHECKING */
1269 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1270 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1271 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1272 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1273 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1274 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1275 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1276 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1279 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1280 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1281 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1282 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1283 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1284 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1285 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1286 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1287 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1288 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1290 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1291 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1293 /* These are like XINT, etc. except that they expect a '0' field instead
1294 of the normal type code. */
1296 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1297 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1298 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1299 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1300 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1301 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1302 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1303 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1304 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1305 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1306 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1307 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1309 /* Access a '0' field with any type. */
1310 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1312 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1313 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1314 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1315 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1316 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1317 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1318 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1319 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1320 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1321 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1323 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1324 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1326 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1329 /* Methods of rtx_expr_list. */
1331 inline rtx_expr_list *rtx_expr_list::next () const
1333 rtx tmp = XEXP (this, 1);
1334 return safe_as_a <rtx_expr_list *> (tmp);
1337 inline rtx rtx_expr_list::element () const
1339 return XEXP (this, 0);
1342 /* Methods of rtx_insn_list. */
1344 inline rtx_insn_list *rtx_insn_list::next () const
1346 rtx tmp = XEXP (this, 1);
1347 return safe_as_a <rtx_insn_list *> (tmp);
1350 inline rtx_insn *rtx_insn_list::insn () const
1352 rtx tmp = XEXP (this, 0);
1353 return safe_as_a <rtx_insn *> (tmp);
1356 /* Methods of rtx_sequence. */
1358 inline int rtx_sequence::len () const
1360 return XVECLEN (this, 0);
1363 inline rtx rtx_sequence::element (int index) const
1365 return XVECEXP (this, 0, index);
1368 inline rtx_insn *rtx_sequence::insn (int index) const
1370 return as_a <rtx_insn *> (XVECEXP (this, 0, index));
1373 /* ACCESS MACROS for particular fields of insns. */
1375 /* Holds a unique number for each insn.
1376 These are not necessarily sequentially increasing. */
1377 inline int INSN_UID (const_rtx insn)
1379 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1380 (insn))->u2.insn_uid;
1382 inline int& INSN_UID (rtx insn)
1384 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1385 (insn))->u2.insn_uid;
1388 /* Chain insns together in sequence. */
1390 /* For now these are split in two: an rvalue form:
1393 SET_NEXT_INSN/SET_PREV_INSN. */
1395 inline rtx_insn *PREV_INSN (const rtx_insn *insn)
1397 rtx prev = XEXP (insn, 0);
1398 return safe_as_a <rtx_insn *> (prev);
1401 inline rtx& SET_PREV_INSN (rtx_insn *insn)
1403 return XEXP (insn, 0);
1406 inline rtx_insn *NEXT_INSN (const rtx_insn *insn)
1408 rtx next = XEXP (insn, 1);
1409 return safe_as_a <rtx_insn *> (next);
1412 inline rtx& SET_NEXT_INSN (rtx_insn *insn)
1414 return XEXP (insn, 1);
1417 inline basic_block BLOCK_FOR_INSN (const_rtx insn)
1419 return XBBDEF (insn, 2);
1422 inline basic_block& BLOCK_FOR_INSN (rtx insn)
1424 return XBBDEF (insn, 2);
1427 inline void set_block_for_insn (rtx_insn *insn, basic_block bb)
1429 BLOCK_FOR_INSN (insn) = bb;
1432 /* The body of an insn. */
1433 inline rtx PATTERN (const_rtx insn)
1435 return XEXP (insn, 3);
1438 inline rtx& PATTERN (rtx insn)
1440 return XEXP (insn, 3);
1443 inline unsigned int INSN_LOCATION (const rtx_insn *insn)
1445 return XUINT (insn, 4);
1448 inline unsigned int& INSN_LOCATION (rtx_insn *insn)
1450 return XUINT (insn, 4);
1453 inline bool INSN_HAS_LOCATION (const rtx_insn *insn)
1455 return LOCATION_LOCUS (INSN_LOCATION (insn)) != UNKNOWN_LOCATION;
1458 /* LOCATION of an RTX if relevant. */
1459 #define RTL_LOCATION(X) (INSN_P (X) ? \
1460 INSN_LOCATION (as_a <rtx_insn *> (X)) \
1463 /* Code number of instruction, from when it was recognized.
1464 -1 means this instruction has not been recognized yet. */
1465 #define INSN_CODE(INSN) XINT (INSN, 5)
1467 inline rtvec rtx_jump_table_data::get_labels () const
1469 rtx pat = PATTERN (this);
1470 if (GET_CODE (pat) == ADDR_VEC)
1471 return XVEC (pat, 0);
1473 return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */
1476 #define RTX_FRAME_RELATED_P(RTX) \
1477 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1478 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1480 /* 1 if JUMP RTX is a crossing jump. */
1481 #define CROSSING_JUMP_P(RTX) \
1482 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1484 /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1486 #define RTL_CONST_CALL_P(RTX) \
1487 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1489 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1491 #define RTL_PURE_CALL_P(RTX) \
1492 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1494 /* 1 if RTX is a call to a const or pure function. */
1495 #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1496 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1498 /* 1 if RTX is a call to a looping const or pure function. Built from
1499 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1500 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1501 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1503 /* 1 if RTX is a call_insn for a sibling call. */
1504 #define SIBLING_CALL_P(RTX) \
1505 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1507 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1508 #define INSN_ANNULLED_BRANCH_P(RTX) \
1509 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1511 /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1512 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1513 executed if the branch is taken. For annulled branches with this bit
1514 clear, the insn should be executed only if the branch is not taken. */
1515 #define INSN_FROM_TARGET_P(RTX) \
1516 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1517 CALL_INSN)->in_struct)
1519 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1520 See the comments for ADDR_DIFF_VEC in rtl.def. */
1521 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1523 /* In a VALUE, the value cselib has assigned to RTX.
1524 This is a "struct cselib_val", see cselib.h. */
1525 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1527 /* Holds a list of notes on what this insn does to various REGs.
1528 It is a chain of EXPR_LIST rtx's, where the second operand is the
1529 chain pointer and the first operand is the REG being described.
1530 The mode field of the EXPR_LIST contains not a real machine mode
1531 but a value from enum reg_note. */
1532 #define REG_NOTES(INSN) XEXP(INSN, 6)
1534 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1536 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1540 #define DEF_REG_NOTE(NAME) NAME,
1541 #include "reg-notes.def"
1546 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1547 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1548 #define PUT_REG_NOTE_KIND(LINK, KIND) \
1549 PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1551 /* Names for REG_NOTE's in EXPR_LIST insn's. */
1553 extern const char * const reg_note_name[];
1554 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1556 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1557 USE and CLOBBER expressions.
1558 USE expressions list the registers filled with arguments that
1559 are passed to the function.
1560 CLOBBER expressions document the registers explicitly clobbered
1562 Pseudo registers can not be mentioned in this list. */
1563 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1565 /* The label-number of a code-label. The assembler label
1566 is made from `L' and the label-number printed in decimal.
1567 Label numbers are unique in a compilation. */
1568 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1570 /* In a NOTE that is a line number, this is a string for the file name that the
1571 line is in. We use the same field to record block numbers temporarily in
1572 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1573 between ints and pointers if we use a different macro for the block number.)
1577 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1578 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1579 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1580 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1581 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1582 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1583 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1584 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1585 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1587 /* In a NOTE that is a line number, this is the line number.
1588 Other kinds of NOTEs are identified by negative numbers here. */
1589 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1591 /* Nonzero if INSN is a note marking the beginning of a basic block. */
1592 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1593 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1595 /* Variable declaration and the location of a variable. */
1596 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1597 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1599 /* Initialization status of the variable in the location. Status
1600 can be unknown, uninitialized or initialized. See enumeration
1602 #define PAT_VAR_LOCATION_STATUS(PAT) \
1603 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1604 ->u2.var_location_status)
1606 /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1607 #define NOTE_VAR_LOCATION_DECL(NOTE) \
1608 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1609 #define NOTE_VAR_LOCATION_LOC(NOTE) \
1610 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1611 #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1612 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1614 /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1615 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN)
1617 /* Accessors for a tree-expanded var location debug insn. */
1618 #define INSN_VAR_LOCATION_DECL(INSN) \
1619 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1620 #define INSN_VAR_LOCATION_LOC(INSN) \
1621 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1622 #define INSN_VAR_LOCATION_STATUS(INSN) \
1623 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1625 /* Expand to the RTL that denotes an unknown variable location in a
1627 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1629 /* Determine whether X is such an unknown location. */
1630 #define VAR_LOC_UNKNOWN_P(X) \
1631 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1633 /* 1 if RTX is emitted after a call, but it should take effect before
1634 the call returns. */
1635 #define NOTE_DURING_CALL_P(RTX) \
1636 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1638 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1639 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1641 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1642 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1644 /* PARM_DECL DEBUG_PARAMETER_REF references. */
1645 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1647 /* Codes that appear in the NOTE_KIND field for kinds of notes
1648 that are not line numbers. These codes are all negative.
1650 Notice that we do not try to use zero here for any of
1651 the special note codes because sometimes the source line
1652 actually can be zero! This happens (for example) when we
1653 are generating code for the per-translation-unit constructor
1654 and destructor routines for some C++ translation unit. */
1658 #define DEF_INSN_NOTE(NAME) NAME,
1659 #include "insn-notes.def"
1660 #undef DEF_INSN_NOTE
1665 /* Names for NOTE insn's other than line numbers. */
1667 extern const char * const note_insn_name[NOTE_INSN_MAX];
1668 #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1669 (note_insn_name[(NOTE_CODE)])
1671 /* The name of a label, in case it corresponds to an explicit label
1672 in the input source code. */
1673 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1675 /* In jump.c, each label contains a count of the number
1676 of LABEL_REFs that point at it, so unused labels can be deleted. */
1677 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1679 /* Labels carry a two-bit field composed of the ->jump and ->call
1680 bits. This field indicates whether the label is an alternate
1681 entry point, and if so, what kind. */
1684 LABEL_NORMAL = 0, /* ordinary label */
1685 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */
1686 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */
1687 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */
1690 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1692 /* Retrieve the kind of LABEL. */
1693 #define LABEL_KIND(LABEL) __extension__ \
1694 ({ __typeof (LABEL) const _label = (LABEL); \
1695 if (! LABEL_P (_label)) \
1696 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1698 (enum label_kind) ((_label->jump << 1) | _label->call); })
1700 /* Set the kind of LABEL. */
1701 #define SET_LABEL_KIND(LABEL, KIND) do { \
1702 __typeof (LABEL) const _label = (LABEL); \
1703 const unsigned int _kind = (KIND); \
1704 if (! LABEL_P (_label)) \
1705 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1707 _label->jump = ((_kind >> 1) & 1); \
1708 _label->call = (_kind & 1); \
1713 /* Retrieve the kind of LABEL. */
1714 #define LABEL_KIND(LABEL) \
1715 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1717 /* Set the kind of LABEL. */
1718 #define SET_LABEL_KIND(LABEL, KIND) do { \
1719 rtx const _label = (LABEL); \
1720 const unsigned int _kind = (KIND); \
1721 _label->jump = ((_kind >> 1) & 1); \
1722 _label->call = (_kind & 1); \
1725 #endif /* rtl flag checking */
1727 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1729 /* In jump.c, each JUMP_INSN can point to a label that it can jump to,
1730 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1731 be decremented and possibly the label can be deleted. */
1732 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1734 inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn)
1736 return safe_as_a <rtx_insn *> (JUMP_LABEL (insn));
1739 /* Methods of rtx_jump_insn. */
1741 inline rtx rtx_jump_insn::jump_label () const
1743 return JUMP_LABEL (this);
1746 inline rtx_code_label *rtx_jump_insn::jump_target () const
1748 return safe_as_a <rtx_code_label *> (JUMP_LABEL (this));
1751 inline void rtx_jump_insn::set_jump_target (rtx_code_label *target)
1753 JUMP_LABEL (this) = target;
1756 /* Once basic blocks are found, each CODE_LABEL starts a chain that
1757 goes through all the LABEL_REFs that jump to that label. The chain
1758 eventually winds up at the CODE_LABEL: it is circular. */
1759 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1761 /* Get the label that a LABEL_REF references. */
1762 #define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF)
1765 /* For a REG rtx, REGNO extracts the register number. REGNO can only
1766 be used on RHS. Use SET_REGNO to change the value. */
1767 #define REGNO(RTX) (rhs_regno(RTX))
1768 #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1770 /* Return the number of consecutive registers in a REG. This is always
1771 1 for pseudo registers and is determined by HARD_REGNO_NREGS for
1773 #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1775 /* ORIGINAL_REGNO holds the number the register originally had; for a
1776 pseudo register turned into a hard reg this will hold the old pseudo
1778 #define ORIGINAL_REGNO(RTX) \
1779 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1781 /* Force the REGNO macro to only be used on the lhs. */
1782 static inline unsigned int
1783 rhs_regno (const_rtx x)
1785 return REG_CHECK (x)->regno;
1788 /* Return the final register in REG X plus one. */
1789 static inline unsigned int
1790 END_REGNO (const_rtx x)
1792 return REGNO (x) + REG_NREGS (x);
1795 /* Change the REGNO and REG_NREGS of REG X to the specified values,
1796 bypassing the df machinery. */
1798 set_regno_raw (rtx x, unsigned int regno, unsigned int nregs)
1800 reg_info *reg = REG_CHECK (x);
1805 /* 1 if RTX is a reg or parallel that is the current function's return
1807 #define REG_FUNCTION_VALUE_P(RTX) \
1808 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1810 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1811 #define REG_USERVAR_P(RTX) \
1812 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1814 /* 1 if RTX is a reg that holds a pointer value. */
1815 #define REG_POINTER(RTX) \
1816 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1818 /* 1 if RTX is a mem that holds a pointer value. */
1819 #define MEM_POINTER(RTX) \
1820 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1822 /* 1 if the given register REG corresponds to a hard register. */
1823 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
1825 /* 1 if the given register number REG_NO corresponds to a hard register. */
1826 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1828 /* For a CONST_INT rtx, INTVAL extracts the integer. */
1829 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
1830 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
1832 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
1833 elements actually needed to represent the constant.
1834 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
1835 significant HOST_WIDE_INT. */
1836 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
1837 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
1838 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
1840 /* For a CONST_DOUBLE:
1841 #if TARGET_SUPPORTS_WIDE_INT == 0
1842 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
1843 low-order word and ..._HIGH the high-order.
1845 For a float, there is a REAL_VALUE_TYPE structure, and
1846 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
1847 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
1848 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
1849 #define CONST_DOUBLE_REAL_VALUE(r) \
1850 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
1852 #define CONST_FIXED_VALUE(r) \
1853 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
1854 #define CONST_FIXED_VALUE_HIGH(r) \
1855 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
1856 #define CONST_FIXED_VALUE_LOW(r) \
1857 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
1859 /* For a CONST_VECTOR, return element #n. */
1860 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
1862 /* For a CONST_VECTOR, return the number of elements in a vector. */
1863 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
1865 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
1866 SUBREG_BYTE extracts the byte-number. */
1868 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
1869 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
1872 /* Return the right cost to give to an operation
1873 to make the cost of the corresponding register-to-register instruction
1874 N times that of a fast register-to-register instruction. */
1875 #define COSTS_N_INSNS(N) ((N) * 4)
1877 /* Maximum cost of an rtl expression. This value has the special meaning
1878 not to use an rtx with this cost under any circumstances. */
1879 #define MAX_COST INT_MAX
1881 /* Return true if CODE always has VOIDmode. */
1884 always_void_p (enum rtx_code code)
1889 /* A structure to hold all available cost information about an rtl
1891 struct full_rtx_costs
1897 /* Initialize a full_rtx_costs structure C to the maximum cost. */
1899 init_costs_to_max (struct full_rtx_costs *c)
1901 c->speed = MAX_COST;
1905 /* Initialize a full_rtx_costs structure C to zero cost. */
1907 init_costs_to_zero (struct full_rtx_costs *c)
1913 /* Compare two full_rtx_costs structures A and B, returning true
1914 if A < B when optimizing for speed. */
1916 costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b,
1920 return (a->speed < b->speed
1921 || (a->speed == b->speed && a->size < b->size));
1923 return (a->size < b->size
1924 || (a->size == b->size && a->speed < b->speed));
1927 /* Increase both members of the full_rtx_costs structure C by the
1930 costs_add_n_insns (struct full_rtx_costs *c, int n)
1932 c->speed += COSTS_N_INSNS (n);
1933 c->size += COSTS_N_INSNS (n);
1936 /* Describes the shape of a subreg:
1938 inner_mode == the mode of the SUBREG_REG
1939 offset == the SUBREG_BYTE
1940 outer_mode == the mode of the SUBREG itself. */
1941 struct subreg_shape {
1942 subreg_shape (machine_mode, unsigned int, machine_mode);
1943 bool operator == (const subreg_shape &) const;
1944 bool operator != (const subreg_shape &) const;
1945 unsigned int unique_id () const;
1947 machine_mode inner_mode;
1948 unsigned int offset;
1949 machine_mode outer_mode;
1953 subreg_shape::subreg_shape (machine_mode inner_mode_in,
1954 unsigned int offset_in,
1955 machine_mode outer_mode_in)
1956 : inner_mode (inner_mode_in), offset (offset_in), outer_mode (outer_mode_in)
1960 subreg_shape::operator == (const subreg_shape &other) const
1962 return (inner_mode == other.inner_mode
1963 && offset == other.offset
1964 && outer_mode == other.outer_mode);
1968 subreg_shape::operator != (const subreg_shape &other) const
1970 return !operator == (other);
1973 /* Return an integer that uniquely identifies this shape. Structures
1974 like rtx_def assume that a mode can fit in an 8-bit bitfield and no
1975 current mode is anywhere near being 65536 bytes in size, so the
1976 id comfortably fits in an int. */
1979 subreg_shape::unique_id () const
1981 STATIC_ASSERT (MAX_MACHINE_MODE <= 256);
1982 return (int) inner_mode + ((int) outer_mode << 8) + (offset << 16);
1985 /* Return the shape of a SUBREG rtx. */
1987 static inline subreg_shape
1988 shape_of_subreg (const_rtx x)
1990 return subreg_shape (GET_MODE (SUBREG_REG (x)),
1991 SUBREG_BYTE (x), GET_MODE (x));
1994 /* Information about an address. This structure is supposed to be able
1995 to represent all supported target addresses. Please extend it if it
1996 is not yet general enough. */
1997 struct address_info {
1998 /* The mode of the value being addressed, or VOIDmode if this is
1999 a load-address operation with no known address mode. */
2002 /* The address space. */
2005 /* A pointer to the top-level address. */
2008 /* A pointer to the inner address, after all address mutations
2009 have been stripped from the top-level address. It can be one
2012 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2014 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2015 points to the step value, depending on whether the step is variable
2016 or constant respectively. SEGMENT is null.
2018 - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2019 with null fields evaluating to 0. */
2022 /* Components that make up *INNER. Each one may be null or nonnull.
2023 When nonnull, their meanings are as follows:
2025 - *SEGMENT is the "segment" of memory to which the address refers.
2026 This value is entirely target-specific and is only called a "segment"
2027 because that's its most typical use. It contains exactly one UNSPEC,
2028 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2031 - *BASE is a variable expression representing a base address.
2032 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM.
2034 - *INDEX is a variable expression representing an index value.
2035 It may be a scaled expression, such as a MULT. It has exactly
2036 one REG, SUBREG or MEM, pointed to by INDEX_TERM.
2038 - *DISP is a constant, possibly mutated. DISP_TERM points to the
2039 unmutated RTX_CONST_OBJ. */
2050 /* In a {PRE,POST}_MODIFY address, this points to a second copy
2051 of BASE_TERM, otherwise it is null. */
2054 /* ADDRESS if this structure describes an address operand, MEM if
2055 it describes a MEM address. */
2056 enum rtx_code addr_outer_code;
2058 /* If BASE is nonnull, this is the code of the rtx that contains it. */
2059 enum rtx_code base_outer_code;
2061 /* True if this is an RTX_AUTOINC address. */
2065 /* This is used to bundle an rtx and a mode together so that the pair
2066 can be used with the wi:: routines. If we ever put modes into rtx
2067 integer constants, this should go away and then just pass an rtx in. */
2068 typedef std::pair <rtx, machine_mode> rtx_mode_t;
2073 struct int_traits <rtx_mode_t>
2075 static const enum precision_type precision_type = VAR_PRECISION;
2076 static const bool host_dependent_precision = false;
2077 /* This ought to be true, except for the special case that BImode
2078 is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2079 static const bool is_sign_extended = false;
2080 static unsigned int get_precision (const rtx_mode_t &);
2081 static wi::storage_ref decompose (HOST_WIDE_INT *, unsigned int,
2082 const rtx_mode_t &);
2087 wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x)
2089 gcc_checking_assert (x.second != BLKmode && x.second != VOIDmode);
2090 return GET_MODE_PRECISION (x.second);
2093 inline wi::storage_ref
2094 wi::int_traits <rtx_mode_t>::decompose (HOST_WIDE_INT *,
2095 unsigned int precision,
2096 const rtx_mode_t &x)
2098 gcc_checking_assert (precision == get_precision (x));
2099 switch (GET_CODE (x.first))
2102 if (precision < HOST_BITS_PER_WIDE_INT)
2103 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2104 targets is 1 rather than -1. */
2105 gcc_checking_assert (INTVAL (x.first)
2106 == sext_hwi (INTVAL (x.first), precision)
2107 || (x.second == BImode && INTVAL (x.first) == 1));
2109 return wi::storage_ref (&INTVAL (x.first), 1, precision);
2111 case CONST_WIDE_INT:
2112 return wi::storage_ref (&CONST_WIDE_INT_ELT (x.first, 0),
2113 CONST_WIDE_INT_NUNITS (x.first), precision);
2115 #if TARGET_SUPPORTS_WIDE_INT == 0
2117 return wi::storage_ref (&CONST_DOUBLE_LOW (x.first), 2, precision);
2127 hwi_with_prec shwi (HOST_WIDE_INT, machine_mode mode);
2128 wide_int min_value (machine_mode, signop);
2129 wide_int max_value (machine_mode, signop);
2132 inline wi::hwi_with_prec
2133 wi::shwi (HOST_WIDE_INT val, machine_mode mode)
2135 return shwi (val, GET_MODE_PRECISION (mode));
2138 /* Produce the smallest number that is represented in MODE. The precision
2139 is taken from MODE and the sign from SGN. */
2141 wi::min_value (machine_mode mode, signop sgn)
2143 return min_value (GET_MODE_PRECISION (mode), sgn);
2146 /* Produce the largest number that is represented in MODE. The precision
2147 is taken from MODE and the sign from SGN. */
2149 wi::max_value (machine_mode mode, signop sgn)
2151 return max_value (GET_MODE_PRECISION (mode), sgn);
2154 extern void init_rtlanal (void);
2155 extern int rtx_cost (rtx, machine_mode, enum rtx_code, int, bool);
2156 extern int address_cost (rtx, machine_mode, addr_space_t, bool);
2157 extern void get_full_rtx_cost (rtx, machine_mode, enum rtx_code, int,
2158 struct full_rtx_costs *);
2159 extern unsigned int subreg_lsb (const_rtx);
2160 extern unsigned int subreg_lsb_1 (machine_mode, machine_mode,
2162 extern unsigned int subreg_regno_offset (unsigned int, machine_mode,
2163 unsigned int, machine_mode);
2164 extern bool subreg_offset_representable_p (unsigned int, machine_mode,
2165 unsigned int, machine_mode);
2166 extern unsigned int subreg_regno (const_rtx);
2167 extern int simplify_subreg_regno (unsigned int, machine_mode,
2168 unsigned int, machine_mode);
2169 extern unsigned int subreg_nregs (const_rtx);
2170 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx);
2171 extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, machine_mode);
2172 extern unsigned int num_sign_bit_copies (const_rtx, machine_mode);
2173 extern bool constant_pool_constant_p (rtx);
2174 extern bool truncated_to_mode (machine_mode, const_rtx);
2175 extern int low_bitmask_len (machine_mode, unsigned HOST_WIDE_INT);
2176 extern void split_double (rtx, rtx *, rtx *);
2177 extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0);
2178 extern void decompose_address (struct address_info *, rtx *,
2179 machine_mode, addr_space_t, enum rtx_code);
2180 extern void decompose_lea_address (struct address_info *, rtx *);
2181 extern void decompose_mem_address (struct address_info *, rtx);
2182 extern void update_address (struct address_info *);
2183 extern HOST_WIDE_INT get_index_scale (const struct address_info *);
2184 extern enum rtx_code get_index_code (const struct address_info *);
2186 /* 1 if RTX is a subreg containing a reg that is already known to be
2187 sign- or zero-extended from the mode of the subreg to the mode of
2188 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2191 When used as a LHS, is means that this extension must be done
2192 when assigning to SUBREG_REG. */
2194 #define SUBREG_PROMOTED_VAR_P(RTX) \
2195 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2197 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2198 this gives the necessary extensions:
2199 0 - signed (SPR_SIGNED)
2200 1 - normal unsigned (SPR_UNSIGNED)
2201 2 - value is both sign and unsign extended for mode
2202 (SPR_SIGNED_AND_UNSIGNED).
2203 -1 - pointer unsigned, which most often can be handled like unsigned
2204 extension, except for generating instructions where we need to
2205 emit special code (ptr_extend insns) on some architectures
2208 const int SRP_POINTER = -1;
2209 const int SRP_SIGNED = 0;
2210 const int SRP_UNSIGNED = 1;
2211 const int SRP_SIGNED_AND_UNSIGNED = 2;
2213 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2214 #define SUBREG_PROMOTED_SET(RTX, VAL) \
2216 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2221 _rtx->volatil = 0; \
2222 _rtx->unchanging = 0; \
2225 _rtx->volatil = 0; \
2226 _rtx->unchanging = 1; \
2228 case SRP_UNSIGNED: \
2229 _rtx->volatil = 1; \
2230 _rtx->unchanging = 0; \
2232 case SRP_SIGNED_AND_UNSIGNED: \
2233 _rtx->volatil = 1; \
2234 _rtx->unchanging = 1; \
2239 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2240 including SRP_SIGNED_AND_UNSIGNED if promoted for
2241 both signed and unsigned. */
2242 #define SUBREG_PROMOTED_GET(RTX) \
2243 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2244 + (RTX)->unchanging - 1)
2246 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2247 #define SUBREG_PROMOTED_SIGN(RTX) \
2248 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2249 : (RTX)->unchanging - 1)
2251 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2253 #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2254 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2256 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2257 for UNSIGNED type. */
2258 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2259 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2261 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2262 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2263 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2264 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2265 : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2267 /* True if the subreg was generated by LRA for reload insns. Such
2268 subregs are valid only during LRA. */
2269 #define LRA_SUBREG_P(RTX) \
2270 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2272 /* True if call is instrumented by Pointer Bounds Checker. */
2273 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \
2274 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump)
2276 /* Access various components of an ASM_OPERANDS rtx. */
2278 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2279 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2280 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2281 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2282 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2283 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2284 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2285 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2286 XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2287 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2288 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2289 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2290 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2291 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2292 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2293 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2294 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS)
2295 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT)
2297 /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2298 #define MEM_READONLY_P(RTX) \
2299 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2301 /* 1 if RTX is a mem and we should keep the alias set for this mem
2302 unchanged when we access a component. Set to 1, or example, when we
2303 are already in a non-addressable component of an aggregate. */
2304 #define MEM_KEEP_ALIAS_SET_P(RTX) \
2305 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2307 /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2308 #define MEM_VOLATILE_P(RTX) \
2309 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2310 ASM_INPUT)->volatil)
2312 /* 1 if RTX is a mem that cannot trap. */
2313 #define MEM_NOTRAP_P(RTX) \
2314 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2316 /* The memory attribute block. We provide access macros for each value
2317 in the block and provide defaults if none specified. */
2318 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2320 /* The register attribute block. We provide access macros for each value
2321 in the block and provide defaults if none specified. */
2322 #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2324 #ifndef GENERATOR_FILE
2325 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2326 set, and may alias anything. Otherwise, the MEM can only alias
2327 MEMs in a conflicting alias set. This value is set in a
2328 language-dependent manner in the front-end, and should not be
2329 altered in the back-end. These set numbers are tested with
2330 alias_sets_conflict_p. */
2331 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2333 /* For a MEM rtx, the decl it is known to refer to, if it is known to
2334 refer to part of a DECL. It may also be a COMPONENT_REF. */
2335 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2337 /* For a MEM rtx, true if its MEM_OFFSET is known. */
2338 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2340 /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2341 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2343 /* For a MEM rtx, the address space. */
2344 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2346 /* For a MEM rtx, true if its MEM_SIZE is known. */
2347 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2349 /* For a MEM rtx, the size in bytes of the MEM. */
2350 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2352 /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2353 mode as a default when STRICT_ALIGNMENT, but not if not. */
2354 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2356 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2359 /* For a REG rtx, the decl it is known to refer to, if it is known to
2360 refer to part of a DECL. */
2361 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2363 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2365 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2367 /* Copy the attributes that apply to memory locations from RHS to LHS. */
2368 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2369 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2370 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2371 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2372 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2373 MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2374 MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2376 /* 1 if RTX is a label_ref for a nonlocal label. */
2377 /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2378 REG_LABEL_TARGET note. */
2379 #define LABEL_REF_NONLOCAL_P(RTX) \
2380 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2382 /* 1 if RTX is a code_label that should always be considered to be needed. */
2383 #define LABEL_PRESERVE_P(RTX) \
2384 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2386 /* During sched, 1 if RTX is an insn that must be scheduled together
2387 with the preceding insn. */
2388 #define SCHED_GROUP_P(RTX) \
2389 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2390 JUMP_INSN, CALL_INSN)->in_struct)
2392 /* For a SET rtx, SET_DEST is the place that is set
2393 and SET_SRC is the value it is set to. */
2394 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2395 #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2396 #define SET_IS_RETURN_P(RTX) \
2397 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2399 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2400 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2401 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2403 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2404 conditionally executing the code on, COND_EXEC_CODE is the code
2405 to execute if the condition is true. */
2406 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2407 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2409 /* 1 if RTX is a symbol_ref that addresses this function's rtl
2411 #define CONSTANT_POOL_ADDRESS_P(RTX) \
2412 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2414 /* 1 if RTX is a symbol_ref that addresses a value in the file's
2415 tree constant pool. This information is private to varasm.c. */
2416 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2417 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2418 (RTX), SYMBOL_REF)->frame_related)
2420 /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2421 #define SYMBOL_REF_FLAG(RTX) \
2422 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2424 /* 1 if RTX is a symbol_ref that has been the library function in
2425 emit_library_call. */
2426 #define SYMBOL_REF_USED(RTX) \
2427 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2429 /* 1 if RTX is a symbol_ref for a weak symbol. */
2430 #define SYMBOL_REF_WEAK(RTX) \
2431 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2433 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2434 SYMBOL_REF_CONSTANT. */
2435 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2437 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2439 #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2440 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2442 /* The tree (decl or constant) associated with the symbol, or null. */
2443 #define SYMBOL_REF_DECL(RTX) \
2444 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2446 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2447 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2448 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2450 /* The rtx constant pool entry for a symbol, or null. */
2451 #define SYMBOL_REF_CONSTANT(RTX) \
2452 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2454 /* A set of flags on a symbol_ref that are, in some respects, redundant with
2455 information derivable from the tree decl associated with this symbol.
2456 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2457 decl. In some cases this is a bug. But beyond that, it's nice to cache
2458 this information to avoid recomputing it. Finally, this allows space for
2459 the target to store more than one bit of information, as with
2461 #define SYMBOL_REF_FLAGS(RTX) \
2462 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2463 ->u2.symbol_ref_flags)
2465 /* These flags are common enough to be defined for all targets. They
2466 are computed by the default version of targetm.encode_section_info. */
2468 /* Set if this symbol is a function. */
2469 #define SYMBOL_FLAG_FUNCTION (1 << 0)
2470 #define SYMBOL_REF_FUNCTION_P(RTX) \
2471 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2472 /* Set if targetm.binds_local_p is true. */
2473 #define SYMBOL_FLAG_LOCAL (1 << 1)
2474 #define SYMBOL_REF_LOCAL_P(RTX) \
2475 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2476 /* Set if targetm.in_small_data_p is true. */
2477 #define SYMBOL_FLAG_SMALL (1 << 2)
2478 #define SYMBOL_REF_SMALL_P(RTX) \
2479 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2480 /* The three-bit field at [5:3] is true for TLS variables; use
2481 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2482 #define SYMBOL_FLAG_TLS_SHIFT 3
2483 #define SYMBOL_REF_TLS_MODEL(RTX) \
2484 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2485 /* Set if this symbol is not defined in this translation unit. */
2486 #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2487 #define SYMBOL_REF_EXTERNAL_P(RTX) \
2488 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2489 /* Set if this symbol has a block_symbol structure associated with it. */
2490 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2491 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2492 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2493 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2494 SYMBOL_REF_HAS_BLOCK_INFO_P. */
2495 #define SYMBOL_FLAG_ANCHOR (1 << 8)
2496 #define SYMBOL_REF_ANCHOR_P(RTX) \
2497 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2499 /* Subsequent bits are available for the target to use. */
2500 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2501 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2503 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2504 structure to which the symbol belongs, or NULL if it has not been
2505 assigned a block. */
2506 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2508 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2509 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2510 RTX has not yet been assigned to a block, or it has not been given an
2511 offset within that block. */
2512 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2514 /* True if RTX is flagged to be a scheduling barrier. */
2515 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2516 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2518 /* Indicate whether the machine has any sort of auto increment addressing.
2519 If not, we can avoid checking for REG_INC notes. */
2521 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2522 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2523 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2524 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2525 #define AUTO_INC_DEC 1
2527 #define AUTO_INC_DEC 0
2530 /* Define a macro to look for REG_INC notes,
2531 but save time on machines where they never exist. */
2534 #define FIND_REG_INC_NOTE(INSN, REG) \
2535 ((REG) != NULL_RTX && REG_P ((REG)) \
2536 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2537 : find_reg_note ((INSN), REG_INC, (REG)))
2539 #define FIND_REG_INC_NOTE(INSN, REG) 0
2542 #ifndef HAVE_PRE_INCREMENT
2543 #define HAVE_PRE_INCREMENT 0
2546 #ifndef HAVE_PRE_DECREMENT
2547 #define HAVE_PRE_DECREMENT 0
2550 #ifndef HAVE_POST_INCREMENT
2551 #define HAVE_POST_INCREMENT 0
2554 #ifndef HAVE_POST_DECREMENT
2555 #define HAVE_POST_DECREMENT 0
2558 #ifndef HAVE_POST_MODIFY_DISP
2559 #define HAVE_POST_MODIFY_DISP 0
2562 #ifndef HAVE_POST_MODIFY_REG
2563 #define HAVE_POST_MODIFY_REG 0
2566 #ifndef HAVE_PRE_MODIFY_DISP
2567 #define HAVE_PRE_MODIFY_DISP 0
2570 #ifndef HAVE_PRE_MODIFY_REG
2571 #define HAVE_PRE_MODIFY_REG 0
2575 /* Some architectures do not have complete pre/post increment/decrement
2576 instruction sets, or only move some modes efficiently. These macros
2577 allow us to tune autoincrement generation. */
2579 #ifndef USE_LOAD_POST_INCREMENT
2580 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2583 #ifndef USE_LOAD_POST_DECREMENT
2584 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2587 #ifndef USE_LOAD_PRE_INCREMENT
2588 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2591 #ifndef USE_LOAD_PRE_DECREMENT
2592 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2595 #ifndef USE_STORE_POST_INCREMENT
2596 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2599 #ifndef USE_STORE_POST_DECREMENT
2600 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2603 #ifndef USE_STORE_PRE_INCREMENT
2604 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2607 #ifndef USE_STORE_PRE_DECREMENT
2608 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2611 /* Nonzero when we are generating CONCATs. */
2612 extern int generating_concat_p;
2614 /* Nonzero when we are expanding trees to RTL. */
2615 extern int currently_expanding_to_rtl;
2617 /* Generally useful functions. */
2619 #ifndef GENERATOR_FILE
2620 /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2621 rather than size. */
2624 set_rtx_cost (rtx x, bool speed_p)
2626 return rtx_cost (x, VOIDmode, INSN, 4, speed_p);
2629 /* Like set_rtx_cost, but return both the speed and size costs in C. */
2632 get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c)
2634 get_full_rtx_cost (x, VOIDmode, INSN, 4, c);
2637 /* Return the cost of moving X into a register, relative to the cost
2638 of a register move. SPEED_P is true if optimizing for speed rather
2642 set_src_cost (rtx x, machine_mode mode, bool speed_p)
2644 return rtx_cost (x, mode, SET, 1, speed_p);
2647 /* Like set_src_cost, but return both the speed and size costs in C. */
2650 get_full_set_src_cost (rtx x, machine_mode mode, struct full_rtx_costs *c)
2652 get_full_rtx_cost (x, mode, SET, 1, c);
2657 extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, machine_mode);
2658 extern rtx plus_constant (machine_mode, rtx, HOST_WIDE_INT, bool = false);
2661 extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL);
2662 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO)
2663 extern rtx rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL, int);
2664 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
2665 #define const_wide_int_alloc(NWORDS) \
2666 rtx_alloc_v (CONST_WIDE_INT, \
2667 (sizeof (struct hwivec_def) \
2668 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
2670 extern rtvec rtvec_alloc (int);
2671 extern rtvec shallow_copy_rtvec (rtvec);
2672 extern bool shared_const_p (const_rtx);
2673 extern rtx copy_rtx (rtx);
2674 extern enum rtx_code classify_insn (rtx);
2675 extern void dump_rtx_statistics (void);
2678 extern rtx copy_rtx_if_shared (rtx);
2681 extern unsigned int rtx_size (const_rtx);
2682 extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL);
2683 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
2684 extern int rtx_equal_p (const_rtx, const_rtx);
2685 extern bool rtvec_all_equal_p (const_rtvec);
2687 /* Return true if X is a vector constant with a duplicated element value. */
2690 const_vec_duplicate_p (const_rtx x)
2692 return GET_CODE (x) == CONST_VECTOR && rtvec_all_equal_p (XVEC (x, 0));
2695 /* Return true if X is a vector constant with a duplicated element value.
2696 Store the duplicated element in *ELT if so. */
2698 template <typename T>
2700 const_vec_duplicate_p (T x, T *elt)
2702 if (const_vec_duplicate_p (x))
2704 *elt = CONST_VECTOR_ELT (x, 0);
2710 /* If X is a vector constant with a duplicated element value, return that
2711 element value, otherwise return X. */
2713 template <typename T>
2715 unwrap_const_vec_duplicate (T x)
2717 if (const_vec_duplicate_p (x))
2718 x = CONST_VECTOR_ELT (x, 0);
2723 extern rtvec gen_rtvec_v (int, rtx *);
2724 extern rtvec gen_rtvec_v (int, rtx_insn **);
2725 extern rtx gen_reg_rtx (machine_mode);
2726 extern rtx gen_rtx_REG_offset (rtx, machine_mode, unsigned int, int);
2727 extern rtx gen_reg_rtx_offset (rtx, machine_mode, int);
2728 extern rtx gen_reg_rtx_and_attrs (rtx);
2729 extern rtx_code_label *gen_label_rtx (void);
2730 extern rtx gen_lowpart_common (machine_mode, rtx);
2733 extern rtx gen_lowpart_if_possible (machine_mode, rtx);
2736 extern rtx gen_highpart (machine_mode, rtx);
2737 extern rtx gen_highpart_mode (machine_mode, machine_mode, rtx);
2738 extern rtx operand_subword (rtx, unsigned int, int, machine_mode);
2741 extern rtx operand_subword_force (rtx, unsigned int, machine_mode);
2742 extern bool paradoxical_subreg_p (const_rtx);
2743 extern int subreg_lowpart_p (const_rtx);
2744 extern unsigned int subreg_lowpart_offset (machine_mode,
2746 extern unsigned int subreg_highpart_offset (machine_mode,
2748 extern int byte_lowpart_offset (machine_mode, machine_mode);
2749 extern rtx make_safe_from (rtx, rtx);
2750 extern rtx convert_memory_address_addr_space_1 (machine_mode, rtx,
2751 addr_space_t, bool, bool);
2752 extern rtx convert_memory_address_addr_space (machine_mode, rtx,
2754 #define convert_memory_address(to_mode,x) \
2755 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
2756 extern const char *get_insn_name (int);
2757 extern rtx_insn *get_last_insn_anywhere (void);
2758 extern rtx_insn *get_first_nonnote_insn (void);
2759 extern rtx_insn *get_last_nonnote_insn (void);
2760 extern void start_sequence (void);
2761 extern void push_to_sequence (rtx_insn *);
2762 extern void push_to_sequence2 (rtx_insn *, rtx_insn *);
2763 extern void end_sequence (void);
2764 #if TARGET_SUPPORTS_WIDE_INT == 0
2765 extern double_int rtx_to_double_int (const_rtx);
2767 extern void cwi_output_hex (FILE *, const_rtx);
2768 #ifndef GENERATOR_FILE
2769 extern rtx immed_wide_int_const (const wide_int_ref &, machine_mode);
2771 #if TARGET_SUPPORTS_WIDE_INT == 0
2772 extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
2777 extern rtx force_const_mem (machine_mode, rtx);
2782 extern rtx get_pool_constant (const_rtx);
2783 extern rtx get_pool_constant_mark (rtx, bool *);
2784 extern machine_mode get_pool_mode (const_rtx);
2785 extern rtx simplify_subtraction (rtx);
2786 extern void decide_function_section (tree);
2789 extern rtx_insn *emit_insn_before (rtx, rtx);
2790 extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block);
2791 extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, int);
2792 extern rtx_jump_insn *emit_jump_insn_before (rtx, rtx);
2793 extern rtx_jump_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *);
2794 extern rtx_jump_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *, int);
2795 extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *);
2796 extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *);
2797 extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, int);
2798 extern rtx_insn *emit_debug_insn_before (rtx, rtx_insn *);
2799 extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx);
2800 extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx, int);
2801 extern rtx_barrier *emit_barrier_before (rtx);
2802 extern rtx_code_label *emit_label_before (rtx, rtx_insn *);
2803 extern rtx_note *emit_note_before (enum insn_note, rtx_insn *);
2804 extern rtx_insn *emit_insn_after (rtx, rtx);
2805 extern rtx_insn *emit_insn_after_noloc (rtx, rtx, basic_block);
2806 extern rtx_insn *emit_insn_after_setloc (rtx, rtx, int);
2807 extern rtx_jump_insn *emit_jump_insn_after (rtx, rtx);
2808 extern rtx_jump_insn *emit_jump_insn_after_noloc (rtx, rtx);
2809 extern rtx_jump_insn *emit_jump_insn_after_setloc (rtx, rtx, int);
2810 extern rtx_insn *emit_call_insn_after (rtx, rtx);
2811 extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx);
2812 extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx, int);
2813 extern rtx_insn *emit_debug_insn_after (rtx, rtx);
2814 extern rtx_insn *emit_debug_insn_after_noloc (rtx, rtx);
2815 extern rtx_insn *emit_debug_insn_after_setloc (rtx, rtx, int);
2816 extern rtx_barrier *emit_barrier_after (rtx);
2817 extern rtx_insn *emit_label_after (rtx, rtx_insn *);
2818 extern rtx_note *emit_note_after (enum insn_note, rtx_insn *);
2819 extern rtx_insn *emit_insn (rtx);
2820 extern rtx_insn *emit_debug_insn (rtx);
2821 extern rtx_insn *emit_jump_insn (rtx);
2822 extern rtx_insn *emit_call_insn (rtx);
2823 extern rtx_code_label *emit_label (rtx);
2824 extern rtx_jump_table_data *emit_jump_table_data (rtx);
2825 extern rtx_barrier *emit_barrier (void);
2826 extern rtx_note *emit_note (enum insn_note);
2827 extern rtx_note *emit_note_copy (rtx_note *);
2828 extern rtx_insn *gen_clobber (rtx);
2829 extern rtx_insn *emit_clobber (rtx);
2830 extern rtx_insn *gen_use (rtx);
2831 extern rtx_insn *emit_use (rtx);
2832 extern rtx_insn *make_insn_raw (rtx);
2833 extern void add_function_usage_to (rtx, rtx);
2834 extern rtx_call_insn *last_call_insn (void);
2835 extern rtx_insn *previous_insn (rtx_insn *);
2836 extern rtx_insn *next_insn (rtx_insn *);
2837 extern rtx_insn *prev_nonnote_insn (rtx);
2838 extern rtx_insn *prev_nonnote_insn_bb (rtx);
2839 extern rtx_insn *next_nonnote_insn (rtx);
2840 extern rtx_insn *next_nonnote_insn_bb (rtx_insn *);
2841 extern rtx_insn *prev_nondebug_insn (rtx);
2842 extern rtx_insn *next_nondebug_insn (rtx);
2843 extern rtx_insn *prev_nonnote_nondebug_insn (rtx);
2844 extern rtx_insn *next_nonnote_nondebug_insn (rtx);
2845 extern rtx_insn *prev_real_insn (rtx);
2846 extern rtx_insn *next_real_insn (rtx);
2847 extern rtx_insn *prev_active_insn (rtx);
2848 extern rtx_insn *next_active_insn (rtx);
2849 extern int active_insn_p (const_rtx);
2850 extern rtx_insn *next_cc0_user (rtx);
2851 extern rtx_insn *prev_cc0_setter (rtx_insn *);
2854 extern int insn_line (const rtx_insn *);
2855 extern const char * insn_file (const rtx_insn *);
2856 extern tree insn_scope (const rtx_insn *);
2857 extern expanded_location insn_location (const rtx_insn *);
2858 extern location_t prologue_location, epilogue_location;
2861 extern enum rtx_code reverse_condition (enum rtx_code);
2862 extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code);
2863 extern enum rtx_code swap_condition (enum rtx_code);
2864 extern enum rtx_code unsigned_condition (enum rtx_code);
2865 extern enum rtx_code signed_condition (enum rtx_code);
2866 extern void mark_jump_label (rtx, rtx_insn *, int);
2869 extern rtx_insn *delete_related_insns (rtx);
2872 extern rtx *find_constant_term_loc (rtx *);
2875 extern rtx_insn *try_split (rtx, rtx_insn *, int);
2876 extern int split_branch_probability;
2878 /* In insn-recog.c (generated by genrecog). */
2879 extern rtx_insn *split_insns (rtx, rtx_insn *);
2881 /* In simplify-rtx.c */
2882 extern rtx simplify_const_unary_operation (enum rtx_code, machine_mode,
2884 extern rtx simplify_unary_operation (enum rtx_code, machine_mode, rtx,
2886 extern rtx simplify_const_binary_operation (enum rtx_code, machine_mode,
2888 extern rtx simplify_binary_operation (enum rtx_code, machine_mode, rtx,
2890 extern rtx simplify_ternary_operation (enum rtx_code, machine_mode,
2891 machine_mode, rtx, rtx, rtx);
2892 extern rtx simplify_const_relational_operation (enum rtx_code,
2893 machine_mode, rtx, rtx);
2894 extern rtx simplify_relational_operation (enum rtx_code, machine_mode,
2895 machine_mode, rtx, rtx);
2896 extern rtx simplify_gen_binary (enum rtx_code, machine_mode, rtx, rtx);
2897 extern rtx simplify_gen_unary (enum rtx_code, machine_mode, rtx,
2899 extern rtx simplify_gen_ternary (enum rtx_code, machine_mode,
2900 machine_mode, rtx, rtx, rtx);
2901 extern rtx simplify_gen_relational (enum rtx_code, machine_mode,
2902 machine_mode, rtx, rtx);
2903 extern rtx simplify_subreg (machine_mode, rtx, machine_mode,
2905 extern rtx simplify_gen_subreg (machine_mode, rtx, machine_mode,
2907 extern rtx lowpart_subreg (machine_mode, rtx, machine_mode);
2908 extern rtx simplify_replace_fn_rtx (rtx, const_rtx,
2909 rtx (*fn) (rtx, const_rtx, void *), void *);
2910 extern rtx simplify_replace_rtx (rtx, const_rtx, rtx);
2911 extern rtx simplify_rtx (const_rtx);
2912 extern rtx avoid_constant_pool_reference (rtx);
2913 extern rtx delegitimize_mem_from_attrs (rtx);
2914 extern bool mode_signbit_p (machine_mode, const_rtx);
2915 extern bool val_signbit_p (machine_mode, unsigned HOST_WIDE_INT);
2916 extern bool val_signbit_known_set_p (machine_mode,
2917 unsigned HOST_WIDE_INT);
2918 extern bool val_signbit_known_clear_p (machine_mode,
2919 unsigned HOST_WIDE_INT);
2922 extern machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
2924 extern const HARD_REG_SET &simplifiable_subregs (const subreg_shape &);
2927 extern rtx set_for_reg_notes (rtx);
2928 extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
2929 extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx);
2930 extern void set_insn_deleted (rtx);
2932 /* Functions in rtlanal.c */
2934 extern rtx single_set_2 (const rtx_insn *, const_rtx);
2935 extern bool contains_symbol_ref_p (const_rtx);
2936 extern bool contains_symbolic_reference_p (const_rtx);
2938 /* Handle the cheap and common cases inline for performance. */
2940 inline rtx single_set (const rtx_insn *insn)
2945 if (GET_CODE (PATTERN (insn)) == SET)
2946 return PATTERN (insn);
2948 /* Defer to the more expensive case. */
2949 return single_set_2 (insn, PATTERN (insn));
2952 extern machine_mode get_address_mode (rtx mem);
2953 extern int rtx_addr_can_trap_p (const_rtx);
2954 extern bool nonzero_address_p (const_rtx);
2955 extern int rtx_unstable_p (const_rtx);
2956 extern bool rtx_varies_p (const_rtx, bool);
2957 extern bool rtx_addr_varies_p (const_rtx, bool);
2958 extern rtx get_call_rtx_from (rtx);
2959 extern HOST_WIDE_INT get_integer_term (const_rtx);
2960 extern rtx get_related_value (const_rtx);
2961 extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT);
2962 extern void split_const (rtx, rtx *, rtx *);
2963 extern bool unsigned_reg_p (rtx);
2964 extern int reg_mentioned_p (const_rtx, const_rtx);
2965 extern int count_occurrences (const_rtx, const_rtx, int);
2966 extern int reg_referenced_p (const_rtx, const_rtx);
2967 extern int reg_used_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
2968 extern int reg_set_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
2969 extern int commutative_operand_precedence (rtx);
2970 extern bool swap_commutative_operands_p (rtx, rtx);
2971 extern int modified_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
2972 extern int no_labels_between_p (const rtx_insn *, const rtx_insn *);
2973 extern int modified_in_p (const_rtx, const_rtx);
2974 extern int reg_set_p (const_rtx, const_rtx);
2975 extern int multiple_sets (const_rtx);
2976 extern int set_noop_p (const_rtx);
2977 extern int noop_move_p (const rtx_insn *);
2978 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *);
2979 extern int reg_overlap_mentioned_p (const_rtx, const_rtx);
2980 extern const_rtx set_of (const_rtx, const_rtx);
2981 extern void record_hard_reg_sets (rtx, const_rtx, void *);
2982 extern void record_hard_reg_uses (rtx *, void *);
2983 extern void find_all_hard_regs (const_rtx, HARD_REG_SET *);
2984 extern void find_all_hard_reg_sets (const rtx_insn *, HARD_REG_SET *, bool);
2985 extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *);
2986 extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
2987 extern int dead_or_set_p (const_rtx, const_rtx);
2988 extern int dead_or_set_regno_p (const_rtx, unsigned int);
2989 extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx);
2990 extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int);
2991 extern rtx find_reg_equal_equiv_note (const_rtx);
2992 extern rtx find_constant_src (const rtx_insn *);
2993 extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx);
2994 extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int);
2995 extern rtx alloc_reg_note (enum reg_note, rtx, rtx);
2996 extern void add_reg_note (rtx, enum reg_note, rtx);
2997 extern void add_int_reg_note (rtx, enum reg_note, int);
2998 extern void add_shallow_copy_of_reg_note (rtx_insn *, rtx);
2999 extern void remove_note (rtx, const_rtx);
3000 extern bool remove_reg_equal_equiv_notes (rtx_insn *);
3001 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3002 extern int side_effects_p (const_rtx);
3003 extern int volatile_refs_p (const_rtx);
3004 extern int volatile_insn_p (const_rtx);
3005 extern int may_trap_p_1 (const_rtx, unsigned);
3006 extern int may_trap_p (const_rtx);
3007 extern int may_trap_or_fault_p (const_rtx);
3008 extern bool can_throw_internal (const_rtx);
3009 extern bool can_throw_external (const_rtx);
3010 extern bool insn_could_throw_p (const_rtx);
3011 extern bool insn_nothrow_p (const_rtx);
3012 extern bool can_nonlocal_goto (const rtx_insn *);
3013 extern void copy_reg_eh_region_note_forward (rtx, rtx_insn *, rtx);
3014 extern void copy_reg_eh_region_note_backward (rtx, rtx_insn *, rtx);
3015 extern int inequality_comparisons_p (const_rtx);
3016 extern rtx replace_rtx (rtx, rtx, rtx, bool = false);
3017 extern void replace_label (rtx *, rtx, rtx, bool);
3018 extern void replace_label_in_insn (rtx_insn *, rtx, rtx, bool);
3019 extern bool rtx_referenced_p (const_rtx, const_rtx);
3020 extern bool tablejump_p (const rtx_insn *, rtx *, rtx_jump_table_data **);
3021 extern int computed_jump_p (const rtx_insn *);
3022 extern bool tls_referenced_p (const_rtx);
3024 /* Overload for refers_to_regno_p for checking a single register. */
3026 refers_to_regno_p (unsigned int regnum, const_rtx x, rtx* loc = NULL)
3028 return refers_to_regno_p (regnum, regnum + 1, x, loc);
3031 /* Callback for for_each_inc_dec, to process the autoinc operation OP
3032 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3033 NULL. The callback is passed the same opaque ARG passed to
3034 for_each_inc_dec. Return zero to continue looking for other
3035 autoinc operations or any other value to interrupt the traversal and
3036 return that value to the caller of for_each_inc_dec. */
3037 typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src,
3038 rtx srcoff, void *arg);
3039 extern int for_each_inc_dec (rtx, for_each_inc_dec_fn, void *arg);
3041 typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *,
3043 extern int rtx_equal_p_cb (const_rtx, const_rtx,
3044 rtx_equal_p_callback_function);
3046 typedef int (*hash_rtx_callback_function) (const_rtx, machine_mode, rtx *,
3048 extern unsigned hash_rtx_cb (const_rtx, machine_mode, int *, int *,
3049 bool, hash_rtx_callback_function);
3051 extern rtx regno_use_in (unsigned int, rtx);
3052 extern int auto_inc_p (const_rtx);
3053 extern bool in_insn_list_p (const rtx_insn_list *, const rtx_insn *);
3054 extern void remove_node_from_expr_list (const_rtx, rtx_expr_list **);
3055 extern void remove_node_from_insn_list (const rtx_insn *, rtx_insn_list **);
3056 extern int loc_mentioned_in_p (rtx *, const_rtx);
3057 extern rtx_insn *find_first_parameter_load (rtx_insn *, rtx_insn *);
3058 extern bool keep_with_call_p (const rtx_insn *);
3059 extern bool label_is_jump_target_p (const_rtx, const rtx_insn *);
3060 extern int insn_rtx_cost (rtx, bool);
3061 extern unsigned seq_cost (const rtx_insn *, bool);
3063 /* Given an insn and condition, return a canonical description of
3064 the test being made. */
3065 extern rtx canonicalize_condition (rtx_insn *, rtx, int, rtx_insn **, rtx,
3068 /* Given a JUMP_INSN, return a canonical description of the test
3070 extern rtx get_condition (rtx_insn *, rtx_insn **, int, int);
3072 /* Information about a subreg of a hard register. */
3075 /* Offset of first hard register involved in the subreg. */
3077 /* Number of hard registers involved in the subreg. In the case of
3078 a paradoxical subreg, this is the number of registers that would
3079 be modified by writing to the subreg; some of them may be don't-care
3080 when reading from the subreg. */
3082 /* Whether this subreg can be represented as a hard reg with the new
3083 mode (by adding OFFSET to the original hard register). */
3084 bool representable_p;
3087 extern void subreg_get_info (unsigned int, machine_mode,
3088 unsigned int, machine_mode,
3089 struct subreg_info *);
3093 extern void free_EXPR_LIST_list (rtx_expr_list **);
3094 extern void free_INSN_LIST_list (rtx_insn_list **);
3095 extern void free_EXPR_LIST_node (rtx);
3096 extern void free_INSN_LIST_node (rtx);
3097 extern rtx_insn_list *alloc_INSN_LIST (rtx, rtx);
3098 extern rtx_insn_list *copy_INSN_LIST (rtx_insn_list *);
3099 extern rtx_insn_list *concat_INSN_LIST (rtx_insn_list *, rtx_insn_list *);
3100 extern rtx_expr_list *alloc_EXPR_LIST (int, rtx, rtx);
3101 extern void remove_free_INSN_LIST_elem (rtx_insn *, rtx_insn_list **);
3102 extern rtx remove_list_elem (rtx, rtx *);
3103 extern rtx_insn *remove_free_INSN_LIST_node (rtx_insn_list **);
3104 extern rtx remove_free_EXPR_LIST_node (rtx_expr_list **);
3109 /* Resize reg info. */
3110 extern bool resize_reg_info (void);
3111 /* Free up register info memory. */
3112 extern void free_reg_info (void);
3113 extern void init_subregs_of_mode (void);
3114 extern void finish_subregs_of_mode (void);
3117 extern rtx extract_asm_operands (rtx);
3118 extern int asm_noperands (const_rtx);
3119 extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
3120 machine_mode *, location_t *);
3121 extern void get_referenced_operands (const char *, bool *, unsigned int);
3123 extern enum reg_class reg_preferred_class (int);
3124 extern enum reg_class reg_alternate_class (int);
3125 extern enum reg_class reg_allocno_class (int);
3126 extern void setup_reg_classes (int, enum reg_class, enum reg_class,
3129 extern void split_all_insns (void);
3130 extern unsigned int split_all_insns_noflow (void);
3132 #define MAX_SAVED_CONST_INT 64
3133 extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
3135 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3136 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3137 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3138 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3139 extern GTY(()) rtx const_true_rtx;
3141 extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE];
3143 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3144 same as VOIDmode. */
3146 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3148 /* Likewise, for the constants 1 and 2 and -1. */
3150 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3151 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3152 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3154 extern GTY(()) rtx pc_rtx;
3155 extern GTY(()) rtx cc0_rtx;
3156 extern GTY(()) rtx ret_rtx;
3157 extern GTY(()) rtx simple_return_rtx;
3158 extern GTY(()) rtx_insn *invalid_insn_rtx;
3160 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3161 is used to represent the frame pointer. This is because the
3162 hard frame pointer and the automatic variables are separated by an amount
3163 that cannot be determined until after register allocation. We can assume
3164 that in this case ELIMINABLE_REGS will be defined, one action of which
3165 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3166 #ifndef HARD_FRAME_POINTER_REGNUM
3167 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3170 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3171 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3172 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3175 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3176 #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3177 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3180 /* Index labels for global_rtl. */
3181 enum global_rtl_index
3185 /* For register elimination to work properly these hard_frame_pointer_rtx,
3186 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3187 the same register. */
3188 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3189 GR_ARG_POINTER = GR_FRAME_POINTER,
3191 #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3192 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER,
3194 GR_HARD_FRAME_POINTER,
3196 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3197 #if HARD_FRAME_POINTER_IS_ARG_POINTER
3198 GR_ARG_POINTER = GR_HARD_FRAME_POINTER,
3203 GR_VIRTUAL_INCOMING_ARGS,
3204 GR_VIRTUAL_STACK_ARGS,
3205 GR_VIRTUAL_STACK_DYNAMIC,
3206 GR_VIRTUAL_OUTGOING_ARGS,
3208 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY,
3213 /* Target-dependent globals. */
3214 struct GTY(()) target_rtl {
3215 /* All references to the hard registers in global_rtl_index go through
3216 these unique rtl objects. On machines where the frame-pointer and
3217 arg-pointer are the same register, they use the same unique object.
3219 After register allocation, other rtl objects which used to be pseudo-regs
3220 may be clobbered to refer to the frame-pointer register.
3221 But references that were originally to the frame-pointer can be
3222 distinguished from the others because they contain frame_pointer_rtx.
3224 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3225 tricky: until register elimination has taken place hard_frame_pointer_rtx
3226 should be used if it is being set, and frame_pointer_rtx otherwise. After
3227 register elimination hard_frame_pointer_rtx should always be used.
3228 On machines where the two registers are same (most) then these are the
3230 rtx x_global_rtl[GR_MAX];
3232 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3233 rtx x_pic_offset_table_rtx;
3235 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3236 This is used to implement __builtin_return_address for some machines;
3237 see for instance the MIPS port. */
3238 rtx x_return_address_pointer_rtx;
3240 /* Commonly used RTL for hard registers. These objects are not
3241 necessarily unique, so we allocate them separately from global_rtl.
3242 They are initialized once per compilation unit, then copied into
3243 regno_reg_rtx at the beginning of each function. */
3244 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER];
3246 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3247 rtx x_top_of_stack[MAX_MACHINE_MODE];
3249 /* Static hunks of RTL used by the aliasing code; these are treated
3250 as persistent to avoid unnecessary RTL allocations. */
3251 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER];
3253 /* The default memory attributes for each mode. */
3254 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE];
3256 /* Track if RTL has been initialized. */
3257 bool target_specific_initialized;
3260 extern GTY(()) struct target_rtl default_target_rtl;
3261 #if SWITCHABLE_TARGET
3262 extern struct target_rtl *this_target_rtl;
3264 #define this_target_rtl (&default_target_rtl)
3267 #define global_rtl \
3268 (this_target_rtl->x_global_rtl)
3269 #define pic_offset_table_rtx \
3270 (this_target_rtl->x_pic_offset_table_rtx)
3271 #define return_address_pointer_rtx \
3272 (this_target_rtl->x_return_address_pointer_rtx)
3273 #define top_of_stack \
3274 (this_target_rtl->x_top_of_stack)
3275 #define mode_mem_attrs \
3276 (this_target_rtl->x_mode_mem_attrs)
3278 /* All references to certain hard regs, except those created
3279 by allocating pseudo regs into them (when that's possible),
3280 go through these unique rtx objects. */
3281 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
3282 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
3283 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
3284 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
3286 #ifndef GENERATOR_FILE
3287 /* Return the attributes of a MEM rtx. */
3288 static inline struct mem_attrs *
3289 get_mem_attrs (const_rtx x)
3291 struct mem_attrs *attrs;
3293 attrs = MEM_ATTRS (x);
3295 attrs = mode_mem_attrs[(int) GET_MODE (x)];
3300 /* Include the RTL generation functions. */
3302 #ifndef GENERATOR_FILE
3304 #undef gen_rtx_ASM_INPUT
3305 #define gen_rtx_ASM_INPUT(MODE, ARG0) \
3306 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0)
3307 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
3308 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC))
3311 /* There are some RTL codes that require special attention; the
3312 generation functions included above do the raw handling. If you
3313 add to this list, modify special_rtx in gengenrtl.c as well. */
3315 extern rtx_expr_list *gen_rtx_EXPR_LIST (machine_mode, rtx, rtx);
3316 extern rtx_insn_list *gen_rtx_INSN_LIST (machine_mode, rtx, rtx);
3318 gen_rtx_INSN (machine_mode mode, rtx_insn *prev_insn, rtx_insn *next_insn,
3319 basic_block bb, rtx pattern, int location, int code,
3321 extern rtx gen_rtx_CONST_INT (machine_mode, HOST_WIDE_INT);
3322 extern rtx gen_rtx_CONST_VECTOR (machine_mode, rtvec);
3323 extern void set_mode_and_regno (rtx, machine_mode, unsigned int);
3324 extern rtx gen_raw_REG (machine_mode, unsigned int);
3325 extern rtx gen_rtx_REG (machine_mode, unsigned int);
3326 extern rtx gen_rtx_SUBREG (machine_mode, rtx, int);
3327 extern rtx gen_rtx_MEM (machine_mode, rtx);
3328 extern rtx gen_rtx_VAR_LOCATION (machine_mode, tree, rtx,
3329 enum var_init_status);
3331 #ifdef GENERATOR_FILE
3332 #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
3335 PUT_MODE (rtx x, machine_mode mode)
3338 set_mode_and_regno (x, mode, REGNO (x));
3340 PUT_MODE_RAW (x, mode);
3344 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
3346 /* Virtual registers are used during RTL generation to refer to locations into
3347 the stack frame when the actual location isn't known until RTL generation
3348 is complete. The routine instantiate_virtual_regs replaces these with
3349 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
3352 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
3354 /* This points to the first word of the incoming arguments passed on the stack,
3355 either by the caller or by the callee when pretending it was passed by the
3358 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
3360 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
3362 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
3363 variable on the stack. Otherwise, it points to the first variable on
3366 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
3368 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
3370 /* This points to the location of dynamically-allocated memory on the stack
3371 immediately after the stack pointer has been adjusted by the amount
3374 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
3376 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
3378 /* This points to the location in the stack at which outgoing arguments should
3379 be written when the stack is pre-pushed (arguments pushed using push
3380 insns always use sp). */
3382 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
3384 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
3386 /* This points to the Canonical Frame Address of the function. This
3387 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
3388 but is calculated relative to the arg pointer for simplicity; the
3389 frame pointer nor stack pointer are necessarily fixed relative to
3390 the CFA until after reload. */
3392 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
3394 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
3396 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
3398 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
3401 #define virtual_preferred_stack_boundary_rtx \
3402 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
3404 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
3405 ((FIRST_VIRTUAL_REGISTER) + 5)
3407 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
3409 /* Nonzero if REGNUM is a pointer into the stack frame. */
3410 #define REGNO_PTR_FRAME_P(REGNUM) \
3411 ((REGNUM) == STACK_POINTER_REGNUM \
3412 || (REGNUM) == FRAME_POINTER_REGNUM \
3413 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
3414 || (REGNUM) == ARG_POINTER_REGNUM \
3415 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
3416 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER))
3418 /* REGNUM never really appearing in the INSN stream. */
3419 #define INVALID_REGNUM (~(unsigned int) 0)
3421 /* REGNUM for which no debug information can be generated. */
3422 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
3424 extern rtx output_constant_def (tree, int);
3425 extern rtx lookup_constant_def (tree);
3427 /* Nonzero after end of reload pass.
3428 Set to 1 or 0 by reload1.c. */
3430 extern int reload_completed;
3432 /* Nonzero after thread_prologue_and_epilogue_insns has run. */
3433 extern int epilogue_completed;
3435 /* Set to 1 while reload_as_needed is operating.
3436 Required by some machines to handle any generated moves differently. */
3438 extern int reload_in_progress;
3440 /* Set to 1 while in lra. */
3441 extern int lra_in_progress;
3443 /* This macro indicates whether you may create a new
3446 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
3449 /* Nonzero after end of regstack pass.
3450 Set to 1 or 0 by reg-stack.c. */
3451 extern int regstack_completed;
3454 /* If this is nonzero, we do not bother generating VOLATILE
3455 around volatile memory references, and we are willing to
3456 output indirect addresses. If cse is to follow, we reject
3457 indirect addresses so a useful potential cse is generated;
3458 if it is used only once, instruction combination will produce
3459 the same indirect address eventually. */
3460 extern int cse_not_expected;
3462 /* Translates rtx code to tree code, for those codes needed by
3463 real_arithmetic. The function returns an int because the caller may not
3464 know what `enum tree_code' means. */
3466 extern int rtx_to_tree_code (enum rtx_code);
3469 extern int delete_trivially_dead_insns (rtx_insn *, int);
3470 extern int exp_equiv_p (const_rtx, const_rtx, int, bool);
3471 extern unsigned hash_rtx (const_rtx x, machine_mode, int *, int *, bool);
3474 extern bool check_for_inc_dec (rtx_insn *insn);
3477 extern int comparison_dominates_p (enum rtx_code, enum rtx_code);
3478 extern bool jump_to_label_p (const rtx_insn *);
3479 extern int condjump_p (const rtx_insn *);
3480 extern int any_condjump_p (const rtx_insn *);
3481 extern int any_uncondjump_p (const rtx_insn *);
3482 extern rtx pc_set (const rtx_insn *);
3483 extern rtx condjump_label (const rtx_insn *);
3484 extern int simplejump_p (const rtx_insn *);
3485 extern int returnjump_p (const rtx_insn *);
3486 extern int eh_returnjump_p (rtx_insn *);
3487 extern int onlyjump_p (const rtx_insn *);
3488 extern int only_sets_cc0_p (const_rtx);
3489 extern int sets_cc0_p (const_rtx);
3490 extern int invert_jump_1 (rtx_jump_insn *, rtx);
3491 extern int invert_jump (rtx_jump_insn *, rtx, int);
3492 extern int rtx_renumbered_equal_p (const_rtx, const_rtx);
3493 extern int true_regnum (const_rtx);
3494 extern unsigned int reg_or_subregno (const_rtx);
3495 extern int redirect_jump_1 (rtx_insn *, rtx);
3496 extern void redirect_jump_2 (rtx_jump_insn *, rtx, rtx, int, int);
3497 extern int redirect_jump (rtx_jump_insn *, rtx, int);
3498 extern void rebuild_jump_labels (rtx_insn *);
3499 extern void rebuild_jump_labels_chain (rtx_insn *);
3500 extern rtx reversed_comparison (const_rtx, machine_mode);
3501 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx);
3502 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
3503 const_rtx, const_rtx);
3504 extern void delete_for_peephole (rtx_insn *, rtx_insn *);
3505 extern int condjump_in_parallel_p (const rtx_insn *);
3507 /* In emit-rtl.c. */
3508 extern int max_reg_num (void);
3509 extern int max_label_num (void);
3510 extern int get_first_label_num (void);
3511 extern void maybe_set_first_label_num (rtx);
3512 extern void delete_insns_since (rtx_insn *);
3513 extern void mark_reg_pointer (rtx, int);
3514 extern void mark_user_reg (rtx);
3515 extern void reset_used_flags (rtx);
3516 extern void set_used_flags (rtx);
3517 extern void reorder_insns (rtx_insn *, rtx_insn *, rtx_insn *);
3518 extern void reorder_insns_nobb (rtx_insn *, rtx_insn *, rtx_insn *);
3519 extern int get_max_insn_count (void);
3520 extern int in_sequence_p (void);
3521 extern void init_emit (void);
3522 extern void init_emit_regs (void);
3523 extern void init_derived_machine_modes (void);
3524 extern void init_emit_once (void);
3525 extern void push_topmost_sequence (void);
3526 extern void pop_topmost_sequence (void);
3527 extern void set_new_first_and_last_insn (rtx_insn *, rtx_insn *);
3528 extern unsigned int unshare_all_rtl (void);
3529 extern void unshare_all_rtl_again (rtx_insn *);
3530 extern void unshare_all_rtl_in_chain (rtx_insn *);
3531 extern void verify_rtl_sharing (void);
3532 extern void add_insn (rtx_insn *);
3533 extern void add_insn_before (rtx, rtx, basic_block);
3534 extern void add_insn_after (rtx, rtx, basic_block);
3535 extern void remove_insn (rtx);
3536 extern rtx_insn *emit (rtx, bool = true);
3537 extern void emit_insn_at_entry (rtx);
3538 extern rtx gen_lowpart_SUBREG (machine_mode, rtx);
3539 extern rtx gen_const_mem (machine_mode, rtx);
3540 extern rtx gen_frame_mem (machine_mode, rtx);
3541 extern rtx gen_tmp_stack_mem (machine_mode, rtx);
3542 extern bool validate_subreg (machine_mode, machine_mode,
3543 const_rtx, unsigned int);
3546 extern unsigned int extended_count (const_rtx, machine_mode, int);
3547 extern rtx remove_death (unsigned int, rtx_insn *);
3548 extern void dump_combine_stats (FILE *);
3549 extern void dump_combine_total_stats (FILE *);
3550 extern rtx make_compound_operation (rtx, enum rtx_code);
3552 /* In sched-rgn.c. */
3553 extern void schedule_insns (void);
3555 /* In sched-ebb.c. */
3556 extern void schedule_ebbs (void);
3558 /* In sel-sched-dump.c. */
3559 extern void sel_sched_fix_param (const char *param, const char *val);
3561 /* In print-rtl.c */
3562 extern const char *print_rtx_head;
3563 extern void debug (const rtx_def &ref);
3564 extern void debug (const rtx_def *ptr);
3565 extern void debug_rtx (const_rtx);
3566 extern void debug_rtx_list (const rtx_insn *, int);
3567 extern void debug_rtx_range (const rtx_insn *, const rtx_insn *);
3568 extern const rtx_insn *debug_rtx_find (const rtx_insn *, int);
3569 extern void print_mem_expr (FILE *, const_tree);
3570 extern void print_rtl (FILE *, const_rtx);
3571 extern void print_simple_rtl (FILE *, const_rtx);
3572 extern int print_rtl_single (FILE *, const_rtx);
3573 extern int print_rtl_single_with_indent (FILE *, const_rtx, int);
3574 extern void print_inline_rtx (FILE *, const_rtx, int);
3577 extern void expand_null_return (void);
3578 extern void expand_naked_return (void);
3579 extern void emit_jump (rtx);
3582 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
3584 extern HOST_WIDE_INT find_args_size_adjust (rtx_insn *);
3585 extern int fixup_args_size_notes (rtx_insn *, rtx_insn *, int);
3588 extern void init_expmed (void);
3589 extern void expand_inc (rtx, rtx);
3590 extern void expand_dec (rtx, rtx);
3592 /* In lower-subreg.c */
3593 extern void init_lower_subreg (void);
3596 extern bool can_copy_p (machine_mode);
3597 extern bool can_assign_to_reg_without_clobbers_p (rtx, machine_mode);
3598 extern rtx fis_get_condition (rtx_insn *);
3601 extern HARD_REG_SET eliminable_regset;
3602 extern void mark_elimination (int, int);
3605 extern int reg_classes_intersect_p (reg_class_t, reg_class_t);
3606 extern int reg_class_subset_p (reg_class_t, reg_class_t);
3607 extern void globalize_reg (tree, int);
3608 extern void init_reg_modes_target (void);
3609 extern void init_regs (void);
3610 extern void reinit_regs (void);
3611 extern void init_fake_stack_mems (void);
3612 extern void save_register_info (void);
3613 extern void init_reg_sets (void);
3614 extern void regclass (rtx, int);
3615 extern void reg_scan (rtx_insn *, unsigned int);
3616 extern void fix_register (const char *, int, int);
3617 extern const HARD_REG_SET *valid_mode_changes_for_regno (unsigned int);
3620 extern int function_invariant_p (const_rtx);
3630 LCT_RETURNS_TWICE = 5
3633 extern void emit_library_call (rtx, enum libcall_type, machine_mode, int,
3635 extern rtx emit_library_call_value (rtx, rtx, enum libcall_type,
3636 machine_mode, int, ...);
3639 extern void init_varasm_once (void);
3641 extern rtx make_debug_expr_from_rtl (const_rtx);
3644 extern bool read_rtx (const char *, vec<rtx> *);
3647 extern rtx canon_rtx (rtx);
3648 extern int true_dependence (const_rtx, machine_mode, const_rtx);
3649 extern rtx get_addr (rtx);
3650 extern int canon_true_dependence (const_rtx, machine_mode, rtx,
3652 extern int read_dependence (const_rtx, const_rtx);
3653 extern int anti_dependence (const_rtx, const_rtx);
3654 extern int canon_anti_dependence (const_rtx, bool,
3655 const_rtx, machine_mode, rtx);
3656 extern int output_dependence (const_rtx, const_rtx);
3657 extern int canon_output_dependence (const_rtx, bool,
3658 const_rtx, machine_mode, rtx);
3659 extern int may_alias_p (const_rtx, const_rtx);
3660 extern void init_alias_target (void);
3661 extern void init_alias_analysis (void);
3662 extern void end_alias_analysis (void);
3663 extern void vt_equate_reg_base_value (const_rtx, const_rtx);
3664 extern bool memory_modified_in_insn_p (const_rtx, const_rtx);
3665 extern bool may_be_sp_based_p (rtx);
3666 extern rtx gen_hard_reg_clobber (machine_mode, unsigned int);
3667 extern rtx get_reg_known_value (unsigned int);
3668 extern bool get_reg_known_equiv_p (unsigned int);
3669 extern rtx get_reg_base_value (unsigned int);
3672 extern int stack_regs_mentioned (const_rtx insn);
3676 extern GTY(()) rtx stack_limit_rtx;
3678 /* In var-tracking.c */
3679 extern unsigned int variable_tracking_main (void);
3681 /* In stor-layout.c. */
3682 extern void get_mode_bounds (machine_mode, int, machine_mode,
3686 extern rtx canon_condition (rtx);
3687 extern void simplify_using_condition (rtx, rtx *, bitmap);
3690 extern unsigned int compute_alignments (void);
3691 extern void update_alignments (vec<rtx> &);
3692 extern int asm_str_count (const char *templ);
3696 rtx (*gen_lowpart) (machine_mode, rtx);
3697 rtx (*gen_lowpart_no_emit) (machine_mode, rtx);
3698 rtx (*reg_nonzero_bits) (const_rtx, machine_mode, const_rtx, machine_mode,
3699 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *);
3700 rtx (*reg_num_sign_bit_copies) (const_rtx, machine_mode, const_rtx, machine_mode,
3701 unsigned int, unsigned int *);
3702 bool (*reg_truncated_to_mode) (machine_mode, const_rtx);
3704 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
3707 /* Each pass can provide its own. */
3708 extern struct rtl_hooks rtl_hooks;
3710 /* ... but then it has to restore these. */
3711 extern const struct rtl_hooks general_rtl_hooks;
3713 /* Keep this for the nonce. */
3714 #define gen_lowpart rtl_hooks.gen_lowpart
3716 extern void insn_locations_init (void);
3717 extern void insn_locations_finalize (void);
3718 extern void set_curr_insn_location (location_t);
3719 extern location_t curr_insn_location (void);
3722 extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *)
3724 extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *)
3727 #define fatal_insn(msgid, insn) \
3728 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
3729 #define fatal_insn_not_found(insn) \
3730 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
3733 extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER];
3735 /* Information about the function that is propagated by the RTL backend.
3736 Available only for functions that has been already assembled. */
3738 struct GTY(()) cgraph_rtl_info {
3739 unsigned int preferred_incoming_stack_boundary;
3741 /* Call unsaved hard registers really used by the corresponding
3742 function (including ones used by functions called by the
3744 HARD_REG_SET function_used_regs;
3745 /* Set if function_used_regs is valid. */
3746 unsigned function_used_regs_valid: 1;
3750 #endif /* ! GCC_RTL_H */