Line data Source code
1 : /* Register Transfer Language (RTL) definitions for GCC
2 : Copyright (C) 1987-2026 Free Software Foundation, Inc.
3 :
4 : This file is part of GCC.
5 :
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
9 : version.
10 :
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
14 : for more details.
15 :
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/>. */
19 :
20 : #ifndef GCC_RTL_H
21 : #define GCC_RTL_H
22 :
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. */
26 : #ifdef GENERATOR_FILE
27 : #include "real.h"
28 : #include "fixed-value.h"
29 : #include "statistics.h"
30 : #include "vec.h"
31 : #include "hash-table.h"
32 : #include "hash-set.h"
33 : #include "input.h"
34 : #include "is-a.h"
35 : #endif /* GENERATOR_FILE */
36 :
37 : #include "hard-reg-set.h"
38 :
39 : class predefined_function_abi;
40 :
41 : /* Value used by some passes to "recognize" noop moves as valid
42 : instructions. */
43 : #define NOOP_MOVE_INSN_CODE INT_MAX
44 :
45 : /* Register Transfer Language EXPRESSIONS CODES */
46 :
47 : #define RTX_CODE enum rtx_code
48 : enum rtx_code : unsigned {
49 :
50 : #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
51 : #include "rtl.def" /* rtl expressions are documented here */
52 : #undef DEF_RTL_EXPR
53 :
54 : LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for
55 : NUM_RTX_CODE.
56 : Assumes default enum value assignment. */
57 :
58 : /* The cast here, saves many elsewhere. */
59 : #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
60 :
61 : /* Similar, but since generator files get more entries... */
62 : #ifdef GENERATOR_FILE
63 : # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND)
64 : #endif
65 :
66 : #define RTX_CODE_BITSIZE 8
67 :
68 : /* Register Transfer Language EXPRESSIONS CODE CLASSES */
69 :
70 : enum rtx_class {
71 : /* We check bit 0-1 of some rtx class codes in the predicates below. */
72 :
73 : /* Bit 0 = comparison if 0, arithmetic is 1
74 : Bit 1 = 1 if commutative. */
75 : RTX_COMPARE, /* 0 */
76 : RTX_COMM_COMPARE,
77 : RTX_BIN_ARITH,
78 : RTX_COMM_ARITH,
79 :
80 : /* Must follow the four preceding values. */
81 : RTX_UNARY, /* 4 */
82 :
83 : RTX_EXTRA,
84 : RTX_MATCH,
85 : RTX_INSN,
86 :
87 : /* Bit 0 = 1 if constant. */
88 : RTX_OBJ, /* 8 */
89 : RTX_CONST_OBJ,
90 :
91 : RTX_TERNARY,
92 : RTX_BITFIELD_OPS,
93 : RTX_AUTOINC
94 : };
95 :
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)
107 :
108 : extern const unsigned char rtx_length[NUM_RTX_CODE];
109 : #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
110 :
111 : extern const char * const rtx_name[NUM_RTX_CODE];
112 : #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
113 :
114 : extern const char * const rtx_format[NUM_RTX_CODE];
115 : #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
116 :
117 : extern const enum rtx_class rtx_class[NUM_RTX_CODE];
118 : #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
119 :
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)
123 :
124 : extern const unsigned char rtx_code_size[NUM_RTX_CODE];
125 : extern const unsigned char rtx_next[NUM_RTX_CODE];
126 :
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
130 : {
131 : /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
132 : unsigned min_align: 8;
133 : /* Flags: */
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
140 : after BASE. */
141 : unsigned max_after_base: 1; /* maximum address target label is
142 : after BASE. */
143 : /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
144 : unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
145 : unsigned : 2;
146 : unsigned scale : 8;
147 : };
148 :
149 : /* Structure used to describe the attributes of a MEM. These are hashed
150 : so MEMs that the same attributes share a data structure. This means
151 : they cannot be modified in place. */
152 : class GTY(()) mem_attrs
153 : {
154 : public:
155 : mem_attrs ();
156 :
157 : /* The expression that the MEM accesses, or null if not known.
158 : This expression might be larger than the memory reference itself.
159 : (In other words, the MEM might access only part of the object.) */
160 : tree expr;
161 :
162 : /* The offset of the memory reference from the start of EXPR.
163 : Only valid if OFFSET_KNOWN_P. */
164 : poly_int64 offset;
165 :
166 : /* The size of the memory reference in bytes. Only valid if
167 : SIZE_KNOWN_P. */
168 : poly_int64 size;
169 :
170 : /* The alias set of the memory reference. */
171 : alias_set_type alias;
172 :
173 : /* The alignment of the reference in bits. Always a multiple of
174 : BITS_PER_UNIT. Note that EXPR may have a stricter alignment
175 : than the memory reference itself. */
176 : unsigned int align;
177 :
178 : /* The address space that the memory reference uses. */
179 : unsigned char addrspace;
180 :
181 : /* True if OFFSET is known. */
182 : bool offset_known_p;
183 :
184 : /* True if SIZE is known. */
185 : bool size_known_p;
186 : };
187 :
188 : /* Structure used to describe the attributes of a REG in similar way as
189 : mem_attrs does for MEM above. Note that the OFFSET field is calculated
190 : in the same way as for mem_attrs, rather than in the same way as a
191 : SUBREG_BYTE. For example, if a big-endian target stores a byte
192 : object in the low part of a 4-byte register, the OFFSET field
193 : will be -3 rather than 0. */
194 :
195 : class GTY((for_user)) reg_attrs {
196 : public:
197 : tree decl; /* decl corresponding to REG. */
198 : poly_int64 offset; /* Offset from start of DECL. */
199 : };
200 :
201 : /* Common union for an element of an rtx. */
202 :
203 : union rtunion
204 : {
205 : int rt_int;
206 : unsigned int rt_uint;
207 : location_t rt_loc;
208 : poly_uint16 rt_subreg;
209 : const char *rt_str;
210 : rtx rt_rtx;
211 : rtvec rt_rtvec;
212 : machine_mode rt_type;
213 : addr_diff_vec_flags rt_addr_diff_vec_flags;
214 : struct cselib_val *rt_cselib;
215 : tree rt_tree;
216 : basic_block rt_bb;
217 : mem_attrs *rt_mem;
218 : class constant_descriptor_rtx *rt_constant;
219 : struct dw_cfi_node *rt_cfi;
220 : };
221 :
222 : /* Describes the properties of a REG. */
223 : struct GTY(()) reg_info {
224 : /* The value of REGNO. */
225 : unsigned int regno;
226 :
227 : /* The value of REG_NREGS. */
228 : unsigned int nregs : 8;
229 : unsigned int unused : 24;
230 :
231 : /* The value of REG_ATTRS. */
232 : reg_attrs *attrs;
233 : };
234 :
235 : /* This structure remembers the position of a SYMBOL_REF within an
236 : object_block structure. A SYMBOL_REF only provides this information
237 : if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */
238 : struct GTY(()) block_symbol {
239 : /* The usual SYMBOL_REF fields. */
240 : rtunion GTY ((skip)) fld[2];
241 :
242 : /* The block that contains this object. */
243 : struct object_block *block;
244 :
245 : /* The offset of this object from the start of its block. It is negative
246 : if the symbol has not yet been assigned an offset. */
247 : HOST_WIDE_INT offset;
248 : };
249 :
250 : /* Describes a group of objects that are to be placed together in such
251 : a way that their relative positions are known. */
252 : struct GTY((for_user)) object_block {
253 : /* The section in which these objects should be placed. */
254 : section *sect;
255 :
256 : /* The alignment of the first object, measured in bits. */
257 : unsigned int alignment;
258 :
259 : /* The total size of the objects, measured in bytes. */
260 : HOST_WIDE_INT size;
261 :
262 : /* The SYMBOL_REFs for each object. The vector is sorted in
263 : order of increasing offset and the following conditions will
264 : hold for each element X:
265 :
266 : SYMBOL_REF_HAS_BLOCK_INFO_P (X)
267 : !SYMBOL_REF_ANCHOR_P (X)
268 : SYMBOL_REF_BLOCK (X) == [address of this structure]
269 : SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
270 : vec<rtx, va_gc> *objects;
271 :
272 : /* All the anchor SYMBOL_REFs used to address these objects, sorted
273 : in order of increasing offset, and then increasing TLS model.
274 : The following conditions will hold for each element X in this vector:
275 :
276 : SYMBOL_REF_HAS_BLOCK_INFO_P (X)
277 : SYMBOL_REF_ANCHOR_P (X)
278 : SYMBOL_REF_BLOCK (X) == [address of this structure]
279 : SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */
280 : vec<rtx, va_gc> *anchors;
281 : };
282 :
283 : struct GTY((variable_size)) hwivec_def {
284 : HOST_WIDE_INT elem[1];
285 : };
286 :
287 : /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */
288 : #define CWI_GET_NUM_ELEM(RTX) \
289 : ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem)
290 : #define CWI_PUT_NUM_ELEM(RTX, NUM) \
291 : (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM))
292 :
293 : struct GTY((variable_size)) const_poly_int_def {
294 : trailing_wide_ints<NUM_POLY_INT_COEFFS> coeffs;
295 : };
296 :
297 : /* RTL expression ("rtx"). */
298 :
299 : /* The GTY "desc" and "tag" options below are a kludge: we need a desc
300 : field for gengtype to recognize that inheritance is occurring,
301 : so that all subclasses are redirected to the traversal hook for the
302 : base class.
303 : However, all of the fields are in the base class, and special-casing
304 : is at work. Hence we use desc and tag of 0, generating a switch
305 : statement of the form:
306 : switch (0)
307 : {
308 : case 0: // all the work happens here
309 : }
310 : in order to work with the existing special-casing in gengtype. */
311 :
312 : struct GTY((desc("0"), tag("0"),
313 : chain_next ("RTX_NEXT (&%h)"),
314 : chain_prev ("RTX_PREV (&%h)"))) rtx_def {
315 : /* The kind of value the expression has. */
316 : ENUM_BITFIELD(machine_mode) mode : MACHINE_MODE_BITSIZE;
317 :
318 : /* The kind of expression this is. */
319 : ENUM_BITFIELD(rtx_code) code: RTX_CODE_BITSIZE;
320 :
321 : /* 1 in a MEM if we should keep the alias set for this mem unchanged
322 : when we access a component.
323 : 1 in a JUMP_INSN if it is a crossing jump.
324 : 1 in a CALL_INSN if it is a sibling call.
325 : 1 in a SET that is for a return.
326 : In a CODE_LABEL, part of the two-bit alternate entry field.
327 : 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.cc.
328 : 1 in a VALUE is SP_BASED_VALUE_P in cselib.cc.
329 : 1 in a SUBREG generated by LRA for reload insns.
330 : 1 in a REG if this is a static chain register.
331 : Dumped as "/j" in RTL dumps. */
332 : unsigned int jump : 1;
333 : /* In a CODE_LABEL, part of the two-bit alternate entry field.
334 : 1 in a MEM if it cannot trap.
335 : 1 in a CALL_INSN logically equivalent to
336 : ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P.
337 : 1 in a VALUE is SP_DERIVED_VALUE_P in cselib.cc.
338 : Dumped as "/c" in RTL dumps. */
339 : unsigned int call : 1;
340 : /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
341 : 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
342 : 1 in a SYMBOL_REF if it addresses something in the per-function
343 : constants pool.
344 : 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY.
345 : 1 in a NOTE, or EXPR_LIST for a const call.
346 : 1 in a JUMP_INSN of an annulling branch.
347 : 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.cc.
348 : 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.cc.
349 : 1 in a clobber temporarily created for LRA.
350 : Dumped as "/u" in RTL dumps. */
351 : unsigned int unchanging : 1;
352 : /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
353 : 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
354 : if it has been deleted.
355 : 1 in a REG expression if corresponds to a variable declared by the user,
356 : 0 for an internally generated temporary.
357 : 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P.
358 : 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a
359 : non-local label.
360 : In a SYMBOL_REF, this flag is used for machine-specific purposes.
361 : In a PREFETCH, this flag indicates that it should be considered a
362 : scheduling barrier.
363 : 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.cc.
364 : Dumped as "/v" in RTL dumps. */
365 : unsigned int volatil : 1;
366 : /* 1 in a REG if the register is used only in exit code a loop.
367 : 1 in a SUBREG expression if was generated from a variable with a
368 : promoted mode.
369 : 1 in a CODE_LABEL if the label is used for nonlocal gotos
370 : and must not be deleted even if its count is zero.
371 : 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
372 : together with the preceding insn. Valid only within sched.
373 : 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
374 : from the target of a branch. Valid from reorg until end of compilation;
375 : cleared before used.
376 :
377 : The name of the field is historical. It used to be used in MEMs
378 : to record whether the MEM accessed part of a structure.
379 : Dumped as "/s" in RTL dumps. */
380 : unsigned int in_struct : 1;
381 : /* At the end of RTL generation, 1 if this rtx is used. This is used for
382 : copying shared structure. See `unshare_all_rtl'.
383 : In a REG, this is not needed for that purpose, and used instead
384 : in `leaf_renumber_regs_insn'.
385 : 1 in a SYMBOL_REF, means that emit_library_call
386 : has used it as the function.
387 : 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.cc.
388 : 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.cc. */
389 : unsigned int used : 1;
390 : /* 1 in an INSN or a SET if this rtx is related to the call frame,
391 : either changing how we compute the frame address or saving and
392 : restoring registers in the prologue and epilogue.
393 : 1 in a REG or MEM if it is a pointer.
394 : 1 in a SYMBOL_REF if it addresses something in the per-function
395 : constant string pool.
396 : 1 in a VALUE is VALUE_CHANGED in var-tracking.cc.
397 : Dumped as "/f" in RTL dumps. */
398 : unsigned frame_related : 1;
399 : /* 1 in a REG or PARALLEL that is the current function's return value.
400 : 1 in a SYMBOL_REF for a weak symbol.
401 : 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P.
402 : 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.cc.
403 : 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.cc.
404 : Dumped as "/i" in RTL dumps. */
405 : unsigned return_val : 1;
406 :
407 : union {
408 : /* The final union field is aligned to 64 bits on LP64 hosts,
409 : giving a 32-bit gap after the fields above. We optimize the
410 : layout for that case and use the gap for extra code-specific
411 : information. */
412 :
413 : /* The ORIGINAL_REGNO of a REG. */
414 : unsigned int original_regno;
415 :
416 : /* The INSN_UID of an RTX_INSN-class code. */
417 : int insn_uid;
418 :
419 : /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */
420 : unsigned int symbol_ref_flags;
421 :
422 : /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */
423 : enum var_init_status var_location_status;
424 :
425 : /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of
426 : HOST_WIDE_INTs in the hwivec_def. */
427 : unsigned int num_elem;
428 :
429 : /* Information about a CONST_VECTOR. */
430 : struct
431 : {
432 : /* The value of CONST_VECTOR_NPATTERNS. */
433 : unsigned int npatterns : 16;
434 :
435 : /* The value of CONST_VECTOR_NELTS_PER_PATTERN. */
436 : unsigned int nelts_per_pattern : 8;
437 :
438 : /* For future expansion. */
439 : unsigned int unused : 8;
440 : } const_vector;
441 : } GTY ((skip)) u2;
442 :
443 : /* The first element of the operands of this rtx.
444 : The number of operands and their types are controlled
445 : by the `code' field, according to rtl.def. */
446 : union u {
447 : rtunion fld[1];
448 : HOST_WIDE_INT hwint[1];
449 : struct reg_info reg;
450 : struct block_symbol block_sym;
451 : struct real_value rv;
452 : struct fixed_value fv;
453 : struct hwivec_def hwiv;
454 : struct const_poly_int_def cpi;
455 : } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
456 : };
457 :
458 : /* A node for constructing singly-linked lists of rtx. */
459 :
460 : struct GTY(()) rtx_expr_list : public rtx_def
461 : {
462 : private:
463 : /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
464 :
465 : public:
466 : /* Get next in list. */
467 : rtx_expr_list *next () const;
468 :
469 : /* Get at the underlying rtx. */
470 : rtx element () const;
471 : };
472 :
473 : template <>
474 : template <>
475 : inline bool
476 915509700 : is_a_helper <rtx_expr_list *>::test (rtx rt)
477 : {
478 915509700 : return rt->code == EXPR_LIST;
479 : }
480 :
481 : struct GTY(()) rtx_insn_list : public rtx_def
482 : {
483 : private:
484 : /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
485 :
486 : This is an instance of:
487 :
488 : DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
489 :
490 : i.e. a node for constructing singly-linked lists of rtx_insn *, where
491 : the list is "external" to the insn (as opposed to the doubly-linked
492 : list embedded within rtx_insn itself). */
493 :
494 : public:
495 : /* Get next in list. */
496 : rtx_insn_list *next () const;
497 :
498 : /* Get at the underlying instruction. */
499 : rtx_insn *insn () const;
500 :
501 : };
502 :
503 : template <>
504 : template <>
505 : inline bool
506 2211169058 : is_a_helper <rtx_insn_list *>::test (rtx rt)
507 : {
508 2211169058 : return rt->code == INSN_LIST;
509 : }
510 :
511 : /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
512 : typically (but not always) of rtx_insn *, used in the late passes. */
513 :
514 : struct GTY(()) rtx_sequence : public rtx_def
515 : {
516 : private:
517 : /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
518 :
519 : public:
520 : /* Get number of elements in sequence. */
521 : int len () const;
522 :
523 : /* Get i-th element of the sequence. */
524 : rtx element (int index) const;
525 :
526 : /* Get i-th element of the sequence, with a checked cast to
527 : rtx_insn *. */
528 : rtx_insn *insn (int index) const;
529 : };
530 :
531 : template <>
532 : template <>
533 : inline bool
534 810259028 : is_a_helper <rtx_sequence *>::test (rtx rt)
535 : {
536 810259028 : return rt->code == SEQUENCE;
537 : }
538 :
539 : template <>
540 : template <>
541 : inline bool
542 0 : is_a_helper <const rtx_sequence *>::test (const_rtx rt)
543 : {
544 0 : return rt->code == SEQUENCE;
545 : }
546 :
547 : struct GTY(()) rtx_insn : public rtx_def
548 : {
549 : public:
550 : /* No extra fields, but adds the invariant:
551 :
552 : (INSN_P (X)
553 : || NOTE_P (X)
554 : || JUMP_TABLE_DATA_P (X)
555 : || BARRIER_P (X)
556 : || LABEL_P (X))
557 :
558 : i.e. that we must be able to use the following:
559 : INSN_UID ()
560 : NEXT_INSN ()
561 : PREV_INSN ()
562 : i.e. we have an rtx that has an INSN_UID field and can be part of
563 : a linked list of insns.
564 : */
565 :
566 : /* Returns true if this insn has been deleted. */
567 :
568 2192583020 : bool deleted () const { return volatil; }
569 :
570 : /* Mark this insn as deleted. */
571 :
572 125685498 : void set_deleted () { volatil = true; }
573 :
574 : /* Mark this insn as not deleted. */
575 :
576 8574 : void set_undeleted () { volatil = false; }
577 : };
578 :
579 : /* Subclasses of rtx_insn. */
580 :
581 : struct GTY(()) rtx_debug_insn : public rtx_insn
582 : {
583 : /* No extra fields, but adds the invariant:
584 : DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
585 : i.e. an annotation for tracking variable assignments.
586 :
587 : This is an instance of:
588 : DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeLie", RTX_INSN)
589 : from rtl.def. */
590 : };
591 :
592 : struct GTY(()) rtx_nonjump_insn : public rtx_insn
593 : {
594 : /* No extra fields, but adds the invariant:
595 : NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
596 : i.e an instruction that cannot jump.
597 :
598 : This is an instance of:
599 : DEF_RTL_EXPR(INSN, "insn", "uuBeLie", RTX_INSN)
600 : from rtl.def. */
601 : };
602 :
603 : struct GTY(()) rtx_jump_insn : public rtx_insn
604 : {
605 : public:
606 : /* No extra fields, but adds the invariant:
607 : JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
608 : i.e. an instruction that can possibly jump.
609 :
610 : This is an instance of:
611 : DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeLie0", RTX_INSN)
612 : from rtl.def. */
613 :
614 : /* Returns jump target of this instruction. The returned value is not
615 : necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
616 : expression. Also, when the code label is marked "deleted", it is
617 : replaced by a NOTE. In some cases the value is NULL_RTX. */
618 :
619 : inline rtx jump_label () const;
620 :
621 : /* Returns jump target cast to rtx_code_label *. */
622 :
623 : inline rtx_code_label *jump_target () const;
624 :
625 : /* Set jump target. */
626 :
627 : inline void set_jump_target (rtx_code_label *);
628 : };
629 :
630 : struct GTY(()) rtx_call_insn : public rtx_insn
631 : {
632 : /* No extra fields, but adds the invariant:
633 : CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
634 : i.e. an instruction that can possibly call a subroutine
635 : but which will not change which instruction comes next
636 : in the current function.
637 :
638 : This is an instance of:
639 : DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeLiee", RTX_INSN)
640 : from rtl.def. */
641 : };
642 :
643 : struct GTY(()) rtx_jump_table_data : public rtx_insn
644 : {
645 : /* No extra fields, but adds the invariant:
646 : JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
647 : i.e. a data for a jump table, considered an instruction for
648 : historical reasons.
649 :
650 : This is an instance of:
651 : DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
652 : from rtl.def. */
653 :
654 : /* This can be either:
655 :
656 : (a) a table of absolute jumps, in which case PATTERN (this) is an
657 : ADDR_VEC with arg 0 a vector of labels, or
658 :
659 : (b) a table of relative jumps (e.g. for -fPIC), in which case
660 : PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
661 : arg 1 the vector of labels.
662 :
663 : This method gets the underlying vec. */
664 :
665 : inline rtvec get_labels () const;
666 : inline scalar_int_mode get_data_mode () const;
667 : };
668 :
669 : struct GTY(()) rtx_barrier : public rtx_insn
670 : {
671 : /* No extra fields, but adds the invariant:
672 : BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
673 : i.e. a marker that indicates that control will not flow through.
674 :
675 : This is an instance of:
676 : DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
677 : from rtl.def. */
678 : };
679 :
680 : struct GTY(()) rtx_code_label : public rtx_insn
681 : {
682 : /* No extra fields, but adds the invariant:
683 : LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
684 : i.e. a label in the assembler.
685 :
686 : This is an instance of:
687 : DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
688 : from rtl.def. */
689 : };
690 :
691 : struct GTY(()) rtx_note : public rtx_insn
692 : {
693 : /* No extra fields, but adds the invariant:
694 : NOTE_P(X) aka (GET_CODE (X) == NOTE)
695 : i.e. a note about the corresponding source code.
696 :
697 : This is an instance of:
698 : DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
699 : from rtl.def. */
700 : };
701 :
702 : /* The size in bytes of an rtx header (code, mode and flags). */
703 : #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
704 :
705 : /* The size in bytes of an rtx with code CODE. */
706 : #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
707 :
708 : #define NULL_RTX (rtx) 0
709 :
710 : /* The "next" and "previous" RTX, relative to this one. */
711 :
712 : #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
713 : : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
714 :
715 : /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
716 : */
717 : #define RTX_PREV(X) ((INSN_P (X) \
718 : || NOTE_P (X) \
719 : || JUMP_TABLE_DATA_P (X) \
720 : || BARRIER_P (X) \
721 : || LABEL_P (X)) \
722 : && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
723 : && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
724 : ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
725 :
726 : /* Define macros to access the `code' field of the rtx. */
727 :
728 : #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
729 : #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
730 :
731 : #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
732 : #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
733 :
734 : /* RTL vector. These appear inside RTX's when there is a need
735 : for a variable number of things. The principle use is inside
736 : PARALLEL expressions. */
737 :
738 : struct GTY(()) rtvec_def {
739 : int num_elem; /* number of elements */
740 : rtx GTY ((length ("%h.num_elem"))) elem[1];
741 : };
742 :
743 : #define NULL_RTVEC (rtvec) 0
744 :
745 : #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
746 : #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
747 :
748 : /* Predicate yielding nonzero iff X is an rtx for a register. */
749 : #define REG_P(X) (GET_CODE (X) == REG)
750 :
751 : /* Predicate yielding nonzero iff X is an rtx for a memory location. */
752 : #define MEM_P(X) (GET_CODE (X) == MEM)
753 :
754 : #if TARGET_SUPPORTS_WIDE_INT
755 :
756 : /* Match CONST_*s that can represent compile-time constant integers. */
757 : #define CASE_CONST_SCALAR_INT \
758 : case CONST_INT: \
759 : case CONST_WIDE_INT
760 :
761 : /* Match CONST_*s for which pointer equality corresponds to value
762 : equality. */
763 : #define CASE_CONST_UNIQUE \
764 : case CONST_INT: \
765 : case CONST_WIDE_INT: \
766 : case CONST_POLY_INT: \
767 : case CONST_DOUBLE: \
768 : case CONST_FIXED
769 :
770 : /* Match all CONST_* rtxes. */
771 : #define CASE_CONST_ANY \
772 : case CONST_INT: \
773 : case CONST_WIDE_INT: \
774 : case CONST_POLY_INT: \
775 : case CONST_DOUBLE: \
776 : case CONST_FIXED: \
777 : case CONST_VECTOR
778 :
779 : #else
780 :
781 : /* Match CONST_*s that can represent compile-time constant integers. */
782 : #define CASE_CONST_SCALAR_INT \
783 : case CONST_INT: \
784 : case CONST_DOUBLE
785 :
786 : /* Match CONST_*s for which pointer equality corresponds to value
787 : equality. */
788 : #define CASE_CONST_UNIQUE \
789 : case CONST_INT: \
790 : case CONST_DOUBLE: \
791 : case CONST_FIXED
792 :
793 : /* Match all CONST_* rtxes. */
794 : #define CASE_CONST_ANY \
795 : case CONST_INT: \
796 : case CONST_DOUBLE: \
797 : case CONST_FIXED: \
798 : case CONST_VECTOR
799 : #endif
800 :
801 : /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
802 : #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
803 :
804 : /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
805 : #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
806 :
807 : /* Predicate yielding nonzero iff X is an rtx for a polynomial constant
808 : integer. */
809 : #define CONST_POLY_INT_P(X) \
810 : (NUM_POLY_INT_COEFFS > 1 && GET_CODE (X) == CONST_POLY_INT)
811 :
812 : /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
813 : #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
814 :
815 : /* Predicate yielding true iff X is an rtx for a double-int
816 : or floating point constant. */
817 : #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
818 :
819 : /* Predicate yielding true iff X is an rtx for a double-int. */
820 : #define CONST_DOUBLE_AS_INT_P(X) \
821 : (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
822 :
823 : /* Predicate yielding true iff X is an rtx for a integer const. */
824 : #if TARGET_SUPPORTS_WIDE_INT
825 : #define CONST_SCALAR_INT_P(X) \
826 : (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
827 : #else
828 : #define CONST_SCALAR_INT_P(X) \
829 : (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
830 : #endif
831 :
832 : /* Predicate yielding true iff X is an rtx for a double-int. */
833 : #define CONST_DOUBLE_AS_FLOAT_P(X) \
834 : (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
835 :
836 : /* Predicate yielding nonzero iff X is an rtx for a constant vector. */
837 : #define CONST_VECTOR_P(X) (GET_CODE (X) == CONST_VECTOR)
838 :
839 : /* Predicate yielding nonzero iff X is a label insn. */
840 : #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
841 :
842 : /* Predicate yielding nonzero iff X is a jump insn. */
843 : #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
844 :
845 : /* Predicate yielding nonzero iff X is a call insn. */
846 : #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
847 :
848 : /* 1 if RTX is a call_insn for a fake call.
849 : CALL_INSN use "used" flag to indicate it's a fake call. */
850 : #define FAKE_CALL_P(RTX) \
851 : (RTL_FLAG_CHECK1 ("FAKE_CALL_P", (RTX), CALL_INSN)->used)
852 :
853 : /* Predicate yielding nonzero iff X is an insn that cannot jump. */
854 : #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
855 :
856 : /* Predicate yielding nonzero iff X is a debug note/insn. */
857 : #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
858 :
859 : /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
860 : #define NONDEBUG_INSN_P(X) (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))
861 :
862 : /* Nonzero if DEBUG_MARKER_INSN_P may possibly hold. */
863 : #define MAY_HAVE_DEBUG_MARKER_INSNS debug_nonbind_markers_p
864 : /* Nonzero if DEBUG_BIND_INSN_P may possibly hold. */
865 : #define MAY_HAVE_DEBUG_BIND_INSNS flag_var_tracking_assignments
866 : /* Nonzero if DEBUG_INSN_P may possibly hold. */
867 : #define MAY_HAVE_DEBUG_INSNS \
868 : (MAY_HAVE_DEBUG_MARKER_INSNS || MAY_HAVE_DEBUG_BIND_INSNS)
869 :
870 : /* Predicate yielding nonzero iff X is a real insn. */
871 : #define INSN_P(X) (NONDEBUG_INSN_P (X) || DEBUG_INSN_P (X))
872 :
873 : /* Predicate yielding nonzero iff X is a note insn. */
874 : #define NOTE_P(X) (GET_CODE (X) == NOTE)
875 :
876 : /* Predicate yielding nonzero iff X is a barrier insn. */
877 : #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
878 :
879 : /* Predicate yielding nonzero iff X is a data for a jump table. */
880 : #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
881 :
882 : /* Predicate yielding nonzero iff RTX is a subreg. */
883 : #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
884 :
885 : /* Predicate yielding true iff RTX is a symbol ref. */
886 : #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
887 :
888 : template <>
889 : template <>
890 : inline bool
891 >17611*10^7 : is_a_helper <rtx_insn *>::test (rtx rt)
892 : {
893 >17611*10^7 : return (INSN_P (rt)
894 >17611*10^7 : || NOTE_P (rt)
895 22320147047 : || JUMP_TABLE_DATA_P (rt)
896 22317204826 : || BARRIER_P (rt)
897 >18996*10^7 : || LABEL_P (rt));
898 : }
899 :
900 : template <>
901 : template <>
902 : inline bool
903 103658974 : is_a_helper <const rtx_insn *>::test (const_rtx rt)
904 : {
905 103658974 : return (INSN_P (rt)
906 103658974 : || NOTE_P (rt)
907 289 : || JUMP_TABLE_DATA_P (rt)
908 289 : || BARRIER_P (rt)
909 103659255 : || LABEL_P (rt));
910 : }
911 :
912 : template <>
913 : template <>
914 : inline bool
915 49081293 : is_a_helper <rtx_debug_insn *>::test (rtx rt)
916 : {
917 49081293 : return DEBUG_INSN_P (rt);
918 : }
919 :
920 : template <>
921 : template <>
922 : inline bool
923 : is_a_helper <rtx_nonjump_insn *>::test (rtx rt)
924 : {
925 : return NONJUMP_INSN_P (rt);
926 : }
927 :
928 : template <>
929 : template <>
930 : inline bool
931 17884502 : is_a_helper <rtx_jump_insn *>::test (rtx rt)
932 : {
933 17884502 : return JUMP_P (rt);
934 : }
935 :
936 : template <>
937 : template <>
938 : inline bool
939 48855321 : is_a_helper <rtx_jump_insn *>::test (rtx_insn *insn)
940 : {
941 48855321 : return JUMP_P (insn);
942 : }
943 :
944 : template <>
945 : template <>
946 : inline bool
947 6268197 : is_a_helper <rtx_call_insn *>::test (rtx rt)
948 : {
949 6268197 : return CALL_P (rt);
950 : }
951 :
952 : template <>
953 : template <>
954 : inline bool
955 732193541 : is_a_helper <rtx_call_insn *>::test (rtx_insn *insn)
956 : {
957 732193541 : return CALL_P (insn);
958 : }
959 :
960 : template <>
961 : template <>
962 : inline bool
963 31516538 : is_a_helper <const rtx_call_insn *>::test (const rtx_insn *insn)
964 : {
965 31516538 : return CALL_P (insn);
966 : }
967 :
968 : template <>
969 : template <>
970 : inline bool
971 7133 : is_a_helper <rtx_jump_table_data *>::test (rtx rt)
972 : {
973 7133 : return JUMP_TABLE_DATA_P (rt);
974 : }
975 :
976 : template <>
977 : template <>
978 : inline bool
979 139479937 : is_a_helper <rtx_jump_table_data *>::test (rtx_insn *insn)
980 : {
981 139479937 : return JUMP_TABLE_DATA_P (insn);
982 : }
983 :
984 : template <>
985 : template <>
986 : inline bool
987 11023376 : is_a_helper <rtx_barrier *>::test (rtx rt)
988 : {
989 11023376 : return BARRIER_P (rt);
990 : }
991 :
992 : template <>
993 : template <>
994 : inline bool
995 23843990 : is_a_helper <rtx_code_label *>::test (rtx rt)
996 : {
997 23843990 : return LABEL_P (rt);
998 : }
999 :
1000 : template <>
1001 : template <>
1002 : inline bool
1003 396031489 : is_a_helper <rtx_code_label *>::test (rtx_insn *insn)
1004 : {
1005 396031489 : return LABEL_P (insn);
1006 : }
1007 :
1008 : template <>
1009 : template <>
1010 : inline bool
1011 161622084 : is_a_helper <rtx_note *>::test (rtx rt)
1012 : {
1013 161622084 : return NOTE_P (rt);
1014 : }
1015 :
1016 : template <>
1017 : template <>
1018 : inline bool
1019 73335165 : is_a_helper <rtx_note *>::test (rtx_insn *insn)
1020 : {
1021 73335165 : return NOTE_P (insn);
1022 : }
1023 :
1024 : /* Predicate yielding nonzero iff X is a return or simple_return. */
1025 : #define ANY_RETURN_P(X) \
1026 : (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
1027 :
1028 : /* 1 if X is a unary operator. */
1029 :
1030 : #define UNARY_P(X) \
1031 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
1032 :
1033 : /* 1 if X is a binary operator. */
1034 :
1035 : #define BINARY_P(X) \
1036 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
1037 :
1038 : /* 1 if X is an arithmetic operator. */
1039 :
1040 : #define ARITHMETIC_P(X) \
1041 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
1042 : == RTX_ARITHMETIC_RESULT)
1043 :
1044 : /* 1 if X is an arithmetic operator. */
1045 :
1046 : #define COMMUTATIVE_ARITH_P(X) \
1047 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
1048 :
1049 : /* 1 if X is a commutative arithmetic operator or a comparison operator.
1050 : These two are sometimes selected together because it is possible to
1051 : swap the two operands. */
1052 :
1053 : #define SWAPPABLE_OPERANDS_P(X) \
1054 : ((1 << GET_RTX_CLASS (GET_CODE (X))) \
1055 : & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
1056 : | (1 << RTX_COMPARE)))
1057 :
1058 : /* 1 if X is a non-commutative operator. */
1059 :
1060 : #define NON_COMMUTATIVE_P(X) \
1061 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1062 : == RTX_NON_COMMUTATIVE_RESULT)
1063 :
1064 : /* 1 if X is a commutative operator on integers. */
1065 :
1066 : #define COMMUTATIVE_P(X) \
1067 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1068 : == RTX_COMMUTATIVE_RESULT)
1069 :
1070 : /* 1 if X is a relational operator. */
1071 :
1072 : #define COMPARISON_P(X) \
1073 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1074 :
1075 : /* 1 if X is a constant value that is an integer. */
1076 :
1077 : #define CONSTANT_P(X) \
1078 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1079 :
1080 : /* 1 if X is a LABEL_REF. */
1081 : #define LABEL_REF_P(X) \
1082 : (GET_CODE (X) == LABEL_REF)
1083 :
1084 : /* 1 if X can be used to represent an object. */
1085 : #define OBJECT_P(X) \
1086 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1087 :
1088 : /* General accessor macros for accessing the fields of an rtx. */
1089 :
1090 : #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1091 : /* The bit with a star outside the statement expr and an & inside is
1092 : so that N can be evaluated only once. */
1093 : #define RTL_CHECK1(RTX, N, C1) __extension__ \
1094 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1095 : const enum rtx_code _code = GET_CODE (_rtx); \
1096 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1097 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1098 : __FUNCTION__); \
1099 : if (GET_RTX_FORMAT (_code)[_n] != C1) \
1100 : rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1101 : __FUNCTION__); \
1102 : &_rtx->u.fld[_n]; }))
1103 :
1104 : #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1105 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1106 : const enum rtx_code _code = GET_CODE (_rtx); \
1107 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1108 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1109 : __FUNCTION__); \
1110 : if (GET_RTX_FORMAT (_code)[_n] != C1 \
1111 : && GET_RTX_FORMAT (_code)[_n] != C2) \
1112 : rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1113 : __FUNCTION__); \
1114 : &_rtx->u.fld[_n]; }))
1115 :
1116 : #define RTL_CHECKC1(RTX, N, C) __extension__ \
1117 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1118 : if (GET_CODE (_rtx) != (C)) \
1119 : rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1120 : __FUNCTION__); \
1121 : &_rtx->u.fld[_n]; }))
1122 :
1123 : #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1124 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1125 : const enum rtx_code _code = GET_CODE (_rtx); \
1126 : if (_code != (C1) && _code != (C2)) \
1127 : rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1128 : __FUNCTION__); \
1129 : &_rtx->u.fld[_n]; }))
1130 :
1131 : #define RTL_CHECKC3(RTX, N, C1, C2, C3) __extension__ \
1132 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1133 : const enum rtx_code _code = GET_CODE (_rtx); \
1134 : if (_code != (C1) && _code != (C2) && _code != (C3)) \
1135 : rtl_check_failed_code3 (_rtx, (C1), (C2), (C3), __FILE__, \
1136 : __LINE__, __FUNCTION__); \
1137 : &_rtx->u.fld[_n]; }))
1138 :
1139 : #define RTVEC_ELT(RTVEC, I) __extension__ \
1140 : (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1141 : if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1142 : rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1143 : __FUNCTION__); \
1144 : &_rtvec->elem[_i]; }))
1145 :
1146 : #define XWINT(RTX, N) __extension__ \
1147 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1148 : const enum rtx_code _code = GET_CODE (_rtx); \
1149 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1150 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1151 : __FUNCTION__); \
1152 : if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1153 : rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1154 : __FUNCTION__); \
1155 : &_rtx->u.hwint[_n]; }))
1156 :
1157 : #define CWI_ELT(RTX, I) __extension__ \
1158 : (*({ __typeof (RTX) const _cwi = (RTX); \
1159 : int _max = CWI_GET_NUM_ELEM (_cwi); \
1160 : const int _i = (I); \
1161 : if (_i < 0 || _i >= _max) \
1162 : cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1163 : __FUNCTION__); \
1164 : &_cwi->u.hwiv.elem[_i]; }))
1165 :
1166 : #define XCWINT(RTX, N, C) __extension__ \
1167 : (*({ __typeof (RTX) const _rtx = (RTX); \
1168 : if (GET_CODE (_rtx) != (C)) \
1169 : rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1170 : __FUNCTION__); \
1171 : &_rtx->u.hwint[N]; }))
1172 :
1173 : #define XCMWINT(RTX, N, C, M) __extension__ \
1174 : (*({ __typeof (RTX) const _rtx = (RTX); \
1175 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1176 : rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1177 : __LINE__, __FUNCTION__); \
1178 : &_rtx->u.hwint[N]; }))
1179 :
1180 : #define XCNMPRV(RTX, C, M) __extension__ \
1181 : ({ __typeof (RTX) const _rtx = (RTX); \
1182 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1183 : rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1184 : __LINE__, __FUNCTION__); \
1185 : &_rtx->u.rv; })
1186 :
1187 : #define XCNMPFV(RTX, C, M) __extension__ \
1188 : ({ __typeof (RTX) const _rtx = (RTX); \
1189 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1190 : rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1191 : __LINE__, __FUNCTION__); \
1192 : &_rtx->u.fv; })
1193 :
1194 : #define REG_CHECK(RTX) __extension__ \
1195 : ({ __typeof (RTX) const _rtx = (RTX); \
1196 : if (GET_CODE (_rtx) != REG) \
1197 : rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1198 : __FUNCTION__); \
1199 : &_rtx->u.reg; })
1200 :
1201 : #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1202 : ({ __typeof (RTX) const _symbol = (RTX); \
1203 : const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1204 : if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1205 : rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1206 : __FUNCTION__); \
1207 : &_symbol->u.block_sym; })
1208 :
1209 : #define HWIVEC_CHECK(RTX,C) __extension__ \
1210 : ({ __typeof (RTX) const _symbol = (RTX); \
1211 : RTL_CHECKC1 (_symbol, 0, C); \
1212 : &_symbol->u.hwiv; })
1213 :
1214 : extern void rtl_check_failed_bounds (const_rtx, int, const char *, int,
1215 : const char *)
1216 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1217 : extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int,
1218 : const char *)
1219 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1220 : extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *,
1221 : int, const char *)
1222 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1223 : extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *,
1224 : int, const char *)
1225 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1226 : extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code,
1227 : const char *, int, const char *)
1228 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1229 : extern void rtl_check_failed_code3 (const_rtx, enum rtx_code, enum rtx_code,
1230 : enum rtx_code, const char *, int,
1231 : const char *)
1232 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1233 : extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, machine_mode,
1234 : bool, const char *, int, const char *)
1235 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1236 : extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1237 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1238 : extern void cwi_check_failed_bounds (const_rtx, int, const char *, int,
1239 : const char *)
1240 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1241 : extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int,
1242 : const char *)
1243 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1244 :
1245 : #else /* not ENABLE_RTL_CHECKING */
1246 :
1247 : #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1248 : #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1249 : #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1250 : #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1251 : #define RTL_CHECKC3(RTX, N, C1, C2, C3) ((RTX)->u.fld[N])
1252 : #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1253 : #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1254 : #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1255 : #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1256 : #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1257 : #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1258 : #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1259 : #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1260 : #define REG_CHECK(RTX) (&(RTX)->u.reg)
1261 : #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1262 : #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1263 :
1264 : #endif
1265 :
1266 : /* General accessor macros for accessing the flags of an rtx. */
1267 :
1268 : /* Access an individual rtx flag, with no checking of any kind. */
1269 : #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1270 :
1271 : #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1272 : #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1273 : ({ __typeof (RTX) const _rtx = (RTX); \
1274 : if (GET_CODE (_rtx) != C1) \
1275 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1276 : __FUNCTION__); \
1277 : _rtx; })
1278 :
1279 : #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1280 : ({ __typeof (RTX) const _rtx = (RTX); \
1281 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1282 : rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1283 : __FUNCTION__); \
1284 : _rtx; })
1285 :
1286 : #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1287 : ({ __typeof (RTX) const _rtx = (RTX); \
1288 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1289 : && GET_CODE (_rtx) != C3) \
1290 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1291 : __FUNCTION__); \
1292 : _rtx; })
1293 :
1294 : #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1295 : ({ __typeof (RTX) const _rtx = (RTX); \
1296 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1297 : && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1298 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1299 : __FUNCTION__); \
1300 : _rtx; })
1301 :
1302 : #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1303 : ({ __typeof (RTX) const _rtx = (RTX); \
1304 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1305 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1306 : && GET_CODE (_rtx) != C5) \
1307 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1308 : __FUNCTION__); \
1309 : _rtx; })
1310 :
1311 : #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1312 : __extension__ \
1313 : ({ __typeof (RTX) const _rtx = (RTX); \
1314 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1315 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1316 : && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1317 : rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1318 : __FUNCTION__); \
1319 : _rtx; })
1320 :
1321 : #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1322 : __extension__ \
1323 : ({ __typeof (RTX) const _rtx = (RTX); \
1324 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1325 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1326 : && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1327 : && GET_CODE (_rtx) != C7) \
1328 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1329 : __FUNCTION__); \
1330 : _rtx; })
1331 :
1332 : #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1333 : __extension__ \
1334 : ({ __typeof (RTX) const _rtx = (RTX); \
1335 : if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1336 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1337 : __FUNCTION__); \
1338 : _rtx; })
1339 :
1340 : extern void rtl_check_failed_flag (const char *, const_rtx, const char *,
1341 : int, const char *)
1342 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD
1343 : ;
1344 :
1345 : #else /* not ENABLE_RTL_FLAG_CHECKING */
1346 :
1347 : #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1348 : #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1349 : #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1350 : #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1351 : #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1352 : #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1353 : #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1354 : #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1355 : #endif
1356 :
1357 : #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1358 : #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1359 : #define XLOC(RTX, N) (RTL_CHECK1 (RTX, N, 'L').rt_loc)
1360 : #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1361 : #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1362 : #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1363 : #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1364 : #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1365 : #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1366 : #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1367 : #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1368 :
1369 : #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1370 : #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1371 :
1372 : /* These are like XINT, etc. except that they expect a '0' field instead
1373 : of the normal type code. */
1374 :
1375 : #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1376 : #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1377 : #define X0LOC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_loc)
1378 : #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1379 : #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1380 : #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1381 : #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1382 : #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1383 : #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1384 : #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1385 : #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1386 : #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1387 : #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1388 :
1389 : /* Access a '0' field with any type. */
1390 : #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1391 :
1392 : #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1393 : #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1394 : #define XCLOC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_loc)
1395 : #define XCSUBREG(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_subreg)
1396 : #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1397 : #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1398 : #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1399 : #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1400 : #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1401 : #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1402 : #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1403 : #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1404 :
1405 : #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1406 : #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1407 :
1408 : #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1409 : #define XC3EXP(RTX, N, C1, C2, C3) (RTL_CHECKC3 (RTX, N, C1, C2, C3).rt_rtx)
1410 :
1411 :
1412 : /* Methods of rtx_expr_list. */
1413 :
1414 136387944 : inline rtx_expr_list *rtx_expr_list::next () const
1415 : {
1416 136387944 : rtx tmp = XEXP (this, 1);
1417 136387944 : return safe_as_a <rtx_expr_list *> (tmp);
1418 : }
1419 :
1420 151370897 : inline rtx rtx_expr_list::element () const
1421 : {
1422 151370897 : return XEXP (this, 0);
1423 : }
1424 :
1425 : /* Methods of rtx_insn_list. */
1426 :
1427 1638197529 : inline rtx_insn_list *rtx_insn_list::next () const
1428 : {
1429 1638197529 : rtx tmp = XEXP (this, 1);
1430 1638197529 : return safe_as_a <rtx_insn_list *> (tmp);
1431 : }
1432 :
1433 1065192472 : inline rtx_insn *rtx_insn_list::insn () const
1434 : {
1435 1065192472 : rtx tmp = XEXP (this, 0);
1436 1065192472 : return safe_as_a <rtx_insn *> (tmp);
1437 : }
1438 :
1439 : /* Methods of rtx_sequence. */
1440 :
1441 0 : inline int rtx_sequence::len () const
1442 : {
1443 0 : return XVECLEN (this, 0);
1444 : }
1445 :
1446 0 : inline rtx rtx_sequence::element (int index) const
1447 : {
1448 0 : return XVECEXP (this, 0, index);
1449 : }
1450 :
1451 0 : inline rtx_insn *rtx_sequence::insn (int index) const
1452 : {
1453 0 : return as_a <rtx_insn *> (XVECEXP (this, 0, index));
1454 : }
1455 :
1456 : /* ACCESS MACROS for particular fields of insns. */
1457 :
1458 : /* Holds a unique number for each insn.
1459 : These are not necessarily sequentially increasing. */
1460 7466924059 : inline int INSN_UID (const_rtx insn)
1461 : {
1462 7466924059 : return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1463 7466924059 : (insn))->u2.insn_uid;
1464 : }
1465 57890403260 : inline int& INSN_UID (rtx insn)
1466 : {
1467 57890403260 : return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1468 57890403260 : (insn))->u2.insn_uid;
1469 : }
1470 :
1471 : /* Chain insns together in sequence. */
1472 :
1473 : /* For now these are split in two: an rvalue form:
1474 : PREV_INSN/NEXT_INSN
1475 : and an lvalue form:
1476 : SET_NEXT_INSN/SET_PREV_INSN. */
1477 :
1478 43918615340 : inline rtx_insn *PREV_INSN (const rtx_insn *insn)
1479 : {
1480 43918615340 : rtx prev = XEXP (insn, 0);
1481 43886688087 : return safe_as_a <rtx_insn *> (prev);
1482 : }
1483 :
1484 : inline rtx& SET_PREV_INSN (rtx_insn *insn)
1485 : {
1486 : return XEXP (insn, 0);
1487 : }
1488 :
1489 >13353*10^7 : inline rtx_insn *NEXT_INSN (const rtx_insn *insn)
1490 : {
1491 >13353*10^7 : rtx next = XEXP (insn, 1);
1492 >13286*10^7 : return safe_as_a <rtx_insn *> (next);
1493 : }
1494 :
1495 : inline rtx& SET_NEXT_INSN (rtx_insn *insn)
1496 : {
1497 : return XEXP (insn, 1);
1498 : }
1499 :
1500 900137 : inline basic_block BLOCK_FOR_INSN (const_rtx insn)
1501 : {
1502 900137 : return XBBDEF (insn, 2);
1503 : }
1504 :
1505 : inline basic_block& BLOCK_FOR_INSN (rtx insn)
1506 : {
1507 : return XBBDEF (insn, 2);
1508 : }
1509 :
1510 436646054 : inline void set_block_for_insn (rtx_insn *insn, basic_block bb)
1511 : {
1512 436645923 : BLOCK_FOR_INSN (insn) = bb;
1513 118665 : }
1514 :
1515 : /* The body of an insn. */
1516 28731015500 : inline rtx PATTERN (const_rtx insn)
1517 : {
1518 28173454733 : return XEXP (insn, 3);
1519 : }
1520 :
1521 2703468407 : inline rtx& PATTERN (rtx insn)
1522 : {
1523 2703468407 : return XEXP (insn, 3);
1524 : }
1525 :
1526 311073778 : inline location_t INSN_LOCATION (const rtx_insn *insn)
1527 : {
1528 218793873 : return XLOC (insn, 4);
1529 : }
1530 :
1531 : inline location_t& INSN_LOCATION (rtx_insn *insn)
1532 : {
1533 : return XLOC (insn, 4);
1534 : }
1535 :
1536 95001765 : inline bool INSN_HAS_LOCATION (const rtx_insn *insn)
1537 : {
1538 95001765 : return LOCATION_LOCUS (INSN_LOCATION (insn)) != UNKNOWN_LOCATION;
1539 : }
1540 :
1541 : /* LOCATION of an RTX if relevant. */
1542 : #define RTL_LOCATION(X) (INSN_P (X) ? \
1543 : INSN_LOCATION (as_a <rtx_insn *> (X)) \
1544 : : UNKNOWN_LOCATION)
1545 :
1546 : /* Code number of instruction, from when it was recognized.
1547 : -1 means this instruction has not been recognized yet. */
1548 : #define INSN_CODE(INSN) XINT (INSN, 5)
1549 :
1550 33335 : inline rtvec rtx_jump_table_data::get_labels () const
1551 : {
1552 33335 : rtx pat = PATTERN (this);
1553 33335 : if (GET_CODE (pat) == ADDR_VEC)
1554 27491 : return XVEC (pat, 0);
1555 : else
1556 5844 : return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */
1557 : }
1558 :
1559 : /* Return the mode of the data in the table, which is always a scalar
1560 : integer. */
1561 :
1562 : inline scalar_int_mode
1563 7126 : rtx_jump_table_data::get_data_mode () const
1564 : {
1565 7126 : return as_a <scalar_int_mode> (GET_MODE (PATTERN (this)));
1566 : }
1567 :
1568 : /* If LABEL is followed by a jump table, return the table, otherwise
1569 : return null. */
1570 :
1571 : inline rtx_jump_table_data *
1572 13624916 : jump_table_for_label (const rtx_code_label *label)
1573 : {
1574 13624916 : return safe_dyn_cast <rtx_jump_table_data *> (NEXT_INSN (label));
1575 : }
1576 :
1577 : #define RTX_FRAME_RELATED_P(RTX) \
1578 : (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1579 : CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1580 :
1581 : /* 1 if JUMP RTX is a crossing jump. */
1582 : #define CROSSING_JUMP_P(RTX) \
1583 : (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1584 :
1585 : /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1586 : TREE_READONLY. */
1587 : #define RTL_CONST_CALL_P(RTX) \
1588 : (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1589 :
1590 : /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1591 : DECL_PURE_P. */
1592 : #define RTL_PURE_CALL_P(RTX) \
1593 : (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1594 :
1595 : /* 1 if RTX is a call to a const or pure function. */
1596 : #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1597 : (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1598 :
1599 : /* 1 if RTX is a call to a looping const or pure function. Built from
1600 : ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1601 : #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1602 : (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1603 :
1604 : /* 1 if RTX is a call_insn for a sibling call. */
1605 : #define SIBLING_CALL_P(RTX) \
1606 : (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1607 :
1608 : /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1609 : #define INSN_ANNULLED_BRANCH_P(RTX) \
1610 : (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1611 :
1612 : /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1613 : If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1614 : executed if the branch is taken. For annulled branches with this bit
1615 : clear, the insn should be executed only if the branch is not taken. */
1616 : #define INSN_FROM_TARGET_P(RTX) \
1617 : (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1618 : CALL_INSN)->in_struct)
1619 :
1620 : /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1621 : See the comments for ADDR_DIFF_VEC in rtl.def. */
1622 : #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1623 :
1624 : /* In a VALUE, the value cselib has assigned to RTX.
1625 : This is a "struct cselib_val", see cselib.h. */
1626 : #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1627 :
1628 : /* Holds a list of notes on what this insn does to various REGs.
1629 : It is a chain of EXPR_LIST rtx's, where the second operand is the
1630 : chain pointer and the first operand is the REG being described.
1631 : The mode field of the EXPR_LIST contains not a real machine mode
1632 : but a value from enum reg_note. */
1633 : #define REG_NOTES(INSN) XEXP(INSN, 6)
1634 :
1635 : /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1636 : question. */
1637 : #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1638 :
1639 : enum reg_note
1640 : {
1641 : #define DEF_REG_NOTE(NAME) NAME,
1642 : #include "reg-notes.def"
1643 : #undef DEF_REG_NOTE
1644 : REG_NOTE_MAX
1645 : };
1646 :
1647 : /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1648 : #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1649 : #define PUT_REG_NOTE_KIND(LINK, KIND) \
1650 : PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1651 :
1652 : /* Names for REG_NOTE's in EXPR_LIST insn's. */
1653 :
1654 : extern const char * const reg_note_name[];
1655 : #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1656 :
1657 : /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1658 : USE, CLOBBER and SET expressions.
1659 : USE expressions list the registers filled with arguments that
1660 : are passed to the function.
1661 : CLOBBER expressions document the registers explicitly clobbered
1662 : by this CALL_INSN.
1663 : SET expressions say that the return value of the call (the SET_DEST)
1664 : is equivalent to a value available before the call (the SET_SRC).
1665 : This kind of SET is used when the return value is predictable in
1666 : advance. It is purely an optimisation hint; unlike USEs and CLOBBERs,
1667 : it does not affect register liveness.
1668 :
1669 : Pseudo registers cannot be mentioned in this list. */
1670 : #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1671 :
1672 : /* Specifies the callee's ABI as an index in the range [0, NUM_ABI_IDS - 1].
1673 : See function-abi.h for more details. */
1674 : #define CALL_INSN_ABI_ID(INSN) XCINT(INSN, 8, CALL_INSN)
1675 :
1676 : /* The label-number of a code-label. The assembler label
1677 : is made from `L' and the label-number printed in decimal.
1678 : Label numbers are unique in a compilation. */
1679 : #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1680 :
1681 : /* In a NOTE that is a line number, this is a string for the file name that the
1682 : line is in. We use the same field to record block numbers temporarily in
1683 : NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1684 : between ints and pointers if we use a different macro for the block number.)
1685 : */
1686 :
1687 : /* Opaque data. */
1688 : #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1689 : #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1690 : #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1691 : #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1692 : #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1693 : #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1694 : #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1695 : #define NOTE_MARKER_LOCATION(INSN) XCLOC (INSN, 3, NOTE)
1696 : #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1697 : #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1698 :
1699 : /* In a NOTE that is a line number, this is the line number.
1700 : Other kinds of NOTEs are identified by negative numbers here. */
1701 : #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1702 :
1703 : /* Nonzero if INSN is a note marking the beginning of a basic block. */
1704 : #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1705 : (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1706 :
1707 : /* Nonzero if INSN is a debug nonbind marker note,
1708 : for which NOTE_MARKER_LOCATION can be used. */
1709 : #define NOTE_MARKER_P(INSN) \
1710 : (NOTE_P (INSN) && \
1711 : (NOTE_KIND (INSN) == NOTE_INSN_BEGIN_STMT \
1712 : || NOTE_KIND (INSN) == NOTE_INSN_INLINE_ENTRY))
1713 :
1714 : /* Variable declaration and the location of a variable. */
1715 : #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1716 : #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1717 :
1718 : /* Initialization status of the variable in the location. Status
1719 : can be unknown, uninitialized or initialized. See enumeration
1720 : type below. */
1721 : #define PAT_VAR_LOCATION_STATUS(PAT) \
1722 : (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1723 : ->u2.var_location_status)
1724 :
1725 : /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1726 : #define NOTE_VAR_LOCATION_DECL(NOTE) \
1727 : PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1728 : #define NOTE_VAR_LOCATION_LOC(NOTE) \
1729 : PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1730 : #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1731 : PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1732 :
1733 : /* Evaluate to TRUE if INSN is a debug insn that denotes a variable
1734 : location/value tracking annotation. */
1735 : #define DEBUG_BIND_INSN_P(INSN) \
1736 : (DEBUG_INSN_P (INSN) \
1737 : && (GET_CODE (PATTERN (INSN)) \
1738 : == VAR_LOCATION))
1739 : /* Evaluate to TRUE if INSN is a debug insn that denotes a program
1740 : source location marker. */
1741 : #define DEBUG_MARKER_INSN_P(INSN) \
1742 : (DEBUG_INSN_P (INSN) \
1743 : && (GET_CODE (PATTERN (INSN)) \
1744 : != VAR_LOCATION))
1745 : /* Evaluate to the marker kind. */
1746 : #define INSN_DEBUG_MARKER_KIND(INSN) \
1747 : (GET_CODE (PATTERN (INSN)) == DEBUG_MARKER \
1748 : ? (GET_MODE (PATTERN (INSN)) == VOIDmode \
1749 : ? NOTE_INSN_BEGIN_STMT \
1750 : : GET_MODE (PATTERN (INSN)) == BLKmode \
1751 : ? NOTE_INSN_INLINE_ENTRY \
1752 : : (enum insn_note)-1) \
1753 : : (enum insn_note)-1)
1754 : /* Create patterns for debug markers. These and the above abstract
1755 : the representation, so that it's easier to get rid of the abuse of
1756 : the mode to hold the marker kind. Other marker types are
1757 : envisioned, so a single bit flag won't do; maybe separate RTL codes
1758 : wouldn't be a problem. */
1759 : #define GEN_RTX_DEBUG_MARKER_BEGIN_STMT_PAT() \
1760 : gen_rtx_DEBUG_MARKER (VOIDmode)
1761 : #define GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT() \
1762 : gen_rtx_DEBUG_MARKER (BLKmode)
1763 :
1764 : /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1765 : #define INSN_VAR_LOCATION(INSN) \
1766 : (RTL_FLAG_CHECK1 ("INSN_VAR_LOCATION", PATTERN (INSN), VAR_LOCATION))
1767 : /* A pointer to the VAR_LOCATION rtx in a DEBUG_INSN. */
1768 : #define INSN_VAR_LOCATION_PTR(INSN) \
1769 : (&PATTERN (INSN))
1770 :
1771 : /* Accessors for a tree-expanded var location debug insn. */
1772 : #define INSN_VAR_LOCATION_DECL(INSN) \
1773 : PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1774 : #define INSN_VAR_LOCATION_LOC(INSN) \
1775 : PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1776 : #define INSN_VAR_LOCATION_STATUS(INSN) \
1777 : PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1778 :
1779 : /* Expand to the RTL that denotes an unknown variable location in a
1780 : DEBUG_INSN. */
1781 : #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1782 :
1783 : /* Determine whether X is such an unknown location. */
1784 : #define VAR_LOC_UNKNOWN_P(X) \
1785 : (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1786 :
1787 : /* 1 if RTX is emitted after a call, but it should take effect before
1788 : the call returns. */
1789 : #define NOTE_DURING_CALL_P(RTX) \
1790 : (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1791 :
1792 : /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1793 : #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1794 :
1795 : /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1796 : #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1797 :
1798 : /* PARM_DECL DEBUG_PARAMETER_REF references. */
1799 : #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1800 :
1801 : /* Codes that appear in the NOTE_KIND field for kinds of notes
1802 : that are not line numbers. These codes are all negative.
1803 :
1804 : Notice that we do not try to use zero here for any of
1805 : the special note codes because sometimes the source line
1806 : actually can be zero! This happens (for example) when we
1807 : are generating code for the per-translation-unit constructor
1808 : and destructor routines for some C++ translation unit. */
1809 :
1810 : enum insn_note
1811 : {
1812 : #define DEF_INSN_NOTE(NAME) NAME,
1813 : #include "insn-notes.def"
1814 : #undef DEF_INSN_NOTE
1815 :
1816 : NOTE_INSN_MAX
1817 : };
1818 :
1819 : /* Names for NOTE insn's other than line numbers. */
1820 :
1821 : extern const char * const note_insn_name[NOTE_INSN_MAX];
1822 : #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1823 : (note_insn_name[(NOTE_CODE)])
1824 :
1825 : /* The name of a label, in case it corresponds to an explicit label
1826 : in the input source code. */
1827 : #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1828 :
1829 : /* In jump.cc, each label contains a count of the number
1830 : of LABEL_REFs that point at it, so unused labels can be deleted. */
1831 : #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1832 :
1833 : /* Labels carry a two-bit field composed of the ->jump and ->call
1834 : bits. This field indicates whether the label is an alternate
1835 : entry point, and if so, what kind. */
1836 : enum label_kind
1837 : {
1838 : LABEL_NORMAL = 0, /* ordinary label */
1839 : LABEL_STATIC_ENTRY, /* alternate entry point, not exported */
1840 : LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */
1841 : LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */
1842 : };
1843 :
1844 : #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1845 :
1846 : /* Retrieve the kind of LABEL. */
1847 : #define LABEL_KIND(LABEL) __extension__ \
1848 : ({ __typeof (LABEL) const _label = (LABEL); \
1849 : if (! LABEL_P (_label)) \
1850 : rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1851 : __FUNCTION__); \
1852 : (enum label_kind) ((_label->jump << 1) | _label->call); })
1853 :
1854 : /* Set the kind of LABEL. */
1855 : #define SET_LABEL_KIND(LABEL, KIND) do { \
1856 : __typeof (LABEL) const _label = (LABEL); \
1857 : const unsigned int _kind = (KIND); \
1858 : if (! LABEL_P (_label)) \
1859 : rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1860 : __FUNCTION__); \
1861 : _label->jump = ((_kind >> 1) & 1); \
1862 : _label->call = (_kind & 1); \
1863 : } while (0)
1864 :
1865 : #else
1866 :
1867 : /* Retrieve the kind of LABEL. */
1868 : #define LABEL_KIND(LABEL) \
1869 : ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1870 :
1871 : /* Set the kind of LABEL. */
1872 : #define SET_LABEL_KIND(LABEL, KIND) do { \
1873 : rtx const _label = (LABEL); \
1874 : const unsigned int _kind = (KIND); \
1875 : _label->jump = ((_kind >> 1) & 1); \
1876 : _label->call = (_kind & 1); \
1877 : } while (0)
1878 :
1879 : #endif /* rtl flag checking */
1880 :
1881 : #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1882 :
1883 : /* In jump.cc, each JUMP_INSN can point to a label that it can jump to,
1884 : so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1885 : be decremented and possibly the label can be deleted. */
1886 : #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1887 :
1888 8653891 : inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn)
1889 : {
1890 8653891 : return safe_as_a <rtx_insn *> (JUMP_LABEL (insn));
1891 : }
1892 :
1893 : /* Methods of rtx_jump_insn. */
1894 :
1895 7835157 : inline rtx rtx_jump_insn::jump_label () const
1896 : {
1897 7835157 : return JUMP_LABEL (this);
1898 : }
1899 :
1900 0 : inline rtx_code_label *rtx_jump_insn::jump_target () const
1901 : {
1902 0 : return safe_as_a <rtx_code_label *> (JUMP_LABEL (this));
1903 : }
1904 :
1905 61799 : inline void rtx_jump_insn::set_jump_target (rtx_code_label *target)
1906 : {
1907 61799 : JUMP_LABEL (this) = target;
1908 : }
1909 :
1910 : /* Once basic blocks are found, each CODE_LABEL starts a chain that
1911 : goes through all the LABEL_REFs that jump to that label. The chain
1912 : eventually winds up at the CODE_LABEL: it is circular. */
1913 : #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1914 :
1915 : /* Get the label that a LABEL_REF references. */
1916 : inline rtx_insn *
1917 89430510 : label_ref_label (const_rtx ref)
1918 : {
1919 89386262 : return as_a<rtx_insn *> (XCEXP (ref, 0, LABEL_REF));
1920 : }
1921 :
1922 : /* Set the label that LABEL_REF ref refers to. */
1923 :
1924 : inline void
1925 32973451 : set_label_ref_label (rtx ref, rtx_insn *label)
1926 : {
1927 32973451 : XCEXP (ref, 0, LABEL_REF) = label;
1928 234 : }
1929 :
1930 : /* For a REG rtx, REGNO extracts the register number. REGNO can only
1931 : be used on RHS. Use SET_REGNO to change the value. */
1932 : #define REGNO(RTX) (rhs_regno(RTX))
1933 : #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1934 :
1935 : /* Return the number of consecutive registers in a REG. This is always
1936 : 1 for pseudo registers and is determined by TARGET_HARD_REGNO_NREGS for
1937 : hard registers. */
1938 : #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1939 :
1940 : /* ORIGINAL_REGNO holds the number the register originally had; for a
1941 : pseudo register turned into a hard reg this will hold the old pseudo
1942 : register number. */
1943 : #define ORIGINAL_REGNO(RTX) \
1944 : (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1945 :
1946 : /* Force the REGNO macro to only be used on the lhs. */
1947 : inline unsigned int
1948 76997652170 : rhs_regno (const_rtx x)
1949 : {
1950 67624695532 : return REG_CHECK (x)->regno;
1951 : }
1952 :
1953 : /* Return the final register in REG X plus one. */
1954 : inline unsigned int
1955 13479931588 : END_REGNO (const_rtx x)
1956 : {
1957 13479043201 : return REGNO (x) + REG_NREGS (x);
1958 : }
1959 :
1960 : /* Change the REGNO and REG_NREGS of REG X to the specified values,
1961 : bypassing the df machinery. */
1962 : inline void
1963 1716278902 : set_regno_raw (rtx x, unsigned int regno, unsigned int nregs)
1964 : {
1965 1716278902 : reg_info *reg = REG_CHECK (x);
1966 1716278902 : reg->regno = regno;
1967 1716278902 : reg->nregs = nregs;
1968 : }
1969 :
1970 : /* 1 if RTX is a reg or parallel that is the current function's return
1971 : value. */
1972 : #define REG_FUNCTION_VALUE_P(RTX) \
1973 : (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1974 :
1975 : /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1976 : #define REG_USERVAR_P(RTX) \
1977 : (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1978 :
1979 : /* 1 if RTX is a reg that holds a pointer value. */
1980 : #define REG_POINTER(RTX) \
1981 : (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1982 :
1983 : /* 1 if RTX is a mem that holds a pointer value. */
1984 : #define MEM_POINTER(RTX) \
1985 : (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1986 :
1987 : /* 1 if the given register REG corresponds to a hard register. */
1988 : #define HARD_REGISTER_P(REG) HARD_REGISTER_NUM_P (REGNO (REG))
1989 :
1990 : /* 1 if the given register number REG_NO corresponds to a hard register. */
1991 : #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1992 :
1993 : /* 1 if the given register REG corresponds to a virtual register. */
1994 : #define VIRTUAL_REGISTER_P(REG) VIRTUAL_REGISTER_NUM_P (REGNO (REG))
1995 :
1996 : /* 1 if the given register number REG_NO corresponds to a virtual register. */
1997 : #define VIRTUAL_REGISTER_NUM_P(REG_NO) \
1998 : IN_RANGE (REG_NO, FIRST_VIRTUAL_REGISTER, LAST_VIRTUAL_REGISTER)
1999 :
2000 : /* For a CONST_INT rtx, INTVAL extracts the integer. */
2001 : #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
2002 : #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
2003 :
2004 : /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
2005 : elements actually needed to represent the constant.
2006 : CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
2007 : significant HOST_WIDE_INT. */
2008 : #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
2009 : #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
2010 : #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
2011 :
2012 : /* For a CONST_POLY_INT, CONST_POLY_INT_COEFFS gives access to the
2013 : individual coefficients, in the form of a trailing_wide_ints structure. */
2014 : #define CONST_POLY_INT_COEFFS(RTX) \
2015 : (RTL_FLAG_CHECK1("CONST_POLY_INT_COEFFS", (RTX), \
2016 : CONST_POLY_INT)->u.cpi.coeffs)
2017 :
2018 : /* For a CONST_DOUBLE:
2019 : #if TARGET_SUPPORTS_WIDE_INT == 0
2020 : For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
2021 : low-order word and ..._HIGH the high-order.
2022 : #endif
2023 : For a float, there is a REAL_VALUE_TYPE structure, and
2024 : CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
2025 : #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
2026 : #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
2027 : #define CONST_DOUBLE_REAL_VALUE(r) \
2028 : ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
2029 :
2030 : #define CONST_FIXED_VALUE(r) \
2031 : ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
2032 : #define CONST_FIXED_VALUE_HIGH(r) \
2033 : ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
2034 : #define CONST_FIXED_VALUE_LOW(r) \
2035 : ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
2036 :
2037 : /* For a CONST_VECTOR, return element #n. */
2038 : #define CONST_VECTOR_ELT(RTX, N) const_vector_elt (RTX, N)
2039 :
2040 : /* See rtl.texi for a description of these macros. */
2041 : #define CONST_VECTOR_NPATTERNS(RTX) \
2042 : (RTL_FLAG_CHECK1 ("CONST_VECTOR_NPATTERNS", (RTX), CONST_VECTOR) \
2043 : ->u2.const_vector.npatterns)
2044 :
2045 : #define CONST_VECTOR_NELTS_PER_PATTERN(RTX) \
2046 : (RTL_FLAG_CHECK1 ("CONST_VECTOR_NELTS_PER_PATTERN", (RTX), CONST_VECTOR) \
2047 : ->u2.const_vector.nelts_per_pattern)
2048 :
2049 : #define CONST_VECTOR_DUPLICATE_P(RTX) \
2050 : (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 1)
2051 :
2052 : #define CONST_VECTOR_STEPPED_P(RTX) \
2053 : (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 3)
2054 :
2055 : #define CONST_VECTOR_ENCODED_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
2056 :
2057 : /* Return the number of elements encoded directly in a CONST_VECTOR. */
2058 :
2059 : inline unsigned int
2060 8058745 : const_vector_encoded_nelts (const_rtx x)
2061 : {
2062 8058745 : return CONST_VECTOR_NPATTERNS (x) * CONST_VECTOR_NELTS_PER_PATTERN (x);
2063 : }
2064 :
2065 : /* For a CONST_VECTOR, return the number of elements in a vector. */
2066 : #define CONST_VECTOR_NUNITS(RTX) GET_MODE_NUNITS (GET_MODE (RTX))
2067 :
2068 : /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
2069 : SUBREG_BYTE extracts the byte-number. */
2070 :
2071 : #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
2072 : #define SUBREG_BYTE(RTX) XCSUBREG (RTX, 1, SUBREG)
2073 :
2074 : /* in rtlanal.cc */
2075 : /* Return the right cost to give to an operation
2076 : to make the cost of the corresponding register-to-register instruction
2077 : N times that of a fast register-to-register instruction. */
2078 : #define COSTS_N_INSNS(N) ((N) * 4)
2079 :
2080 : /* Maximum cost of an rtl expression. This value has the special meaning
2081 : not to use an rtx with this cost under any circumstances. */
2082 : #define MAX_COST INT_MAX
2083 :
2084 : /* Return true if CODE always has VOIDmode. */
2085 :
2086 : inline bool
2087 57204365 : always_void_p (enum rtx_code code)
2088 : {
2089 57204365 : switch (code)
2090 : {
2091 : case SET:
2092 : case PC:
2093 : case RETURN:
2094 : case SIMPLE_RETURN:
2095 : return true;
2096 :
2097 33637549 : default:
2098 33637549 : return false;
2099 : }
2100 : }
2101 :
2102 : /* A structure to hold all available cost information about an rtl
2103 : expression. */
2104 : struct full_rtx_costs
2105 : {
2106 : int speed;
2107 : int size;
2108 : };
2109 :
2110 : /* Initialize a full_rtx_costs structure C to the maximum cost. */
2111 : inline void
2112 1855335 : init_costs_to_max (struct full_rtx_costs *c)
2113 : {
2114 1855335 : c->speed = MAX_COST;
2115 1855335 : c->size = MAX_COST;
2116 : }
2117 :
2118 : /* Initialize a full_rtx_costs structure C to zero cost. */
2119 : inline void
2120 6 : init_costs_to_zero (struct full_rtx_costs *c)
2121 : {
2122 6 : c->speed = 0;
2123 6 : c->size = 0;
2124 : }
2125 :
2126 : /* Compare two full_rtx_costs structures A and B, returning true
2127 : if A < B when optimizing for speed. */
2128 : inline bool
2129 2093991 : costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b,
2130 : bool speed)
2131 : {
2132 2093991 : if (speed)
2133 1370421 : return (a->speed < b->speed
2134 1388144 : || (a->speed == b->speed && a->size < b->size));
2135 : else
2136 723570 : return (a->size < b->size
2137 728073 : || (a->size == b->size && a->speed < b->speed));
2138 : }
2139 :
2140 : /* Increase both members of the full_rtx_costs structure C by the
2141 : cost of N insns. */
2142 : inline void
2143 369 : costs_add_n_insns (struct full_rtx_costs *c, int n)
2144 : {
2145 369 : c->speed += COSTS_N_INSNS (n);
2146 369 : c->size += COSTS_N_INSNS (n);
2147 : }
2148 :
2149 : /* Describes the shape of a subreg:
2150 :
2151 : inner_mode == the mode of the SUBREG_REG
2152 : offset == the SUBREG_BYTE
2153 : outer_mode == the mode of the SUBREG itself. */
2154 : class subreg_shape {
2155 : public:
2156 : subreg_shape (machine_mode, poly_uint16, machine_mode);
2157 : bool operator == (const subreg_shape &) const;
2158 : bool operator != (const subreg_shape &) const;
2159 : unsigned HOST_WIDE_INT unique_id () const;
2160 :
2161 : machine_mode inner_mode;
2162 : poly_uint16 offset;
2163 : machine_mode outer_mode;
2164 : };
2165 :
2166 : inline
2167 3279160 : subreg_shape::subreg_shape (machine_mode inner_mode_in,
2168 : poly_uint16 offset_in,
2169 : machine_mode outer_mode_in)
2170 : : inner_mode (inner_mode_in), offset (offset_in), outer_mode (outer_mode_in)
2171 : {}
2172 :
2173 : inline bool
2174 10682196 : subreg_shape::operator == (const subreg_shape &other) const
2175 : {
2176 10682196 : return (inner_mode == other.inner_mode
2177 3958100 : && known_eq (offset, other.offset)
2178 14218552 : && outer_mode == other.outer_mode);
2179 : }
2180 :
2181 : inline bool
2182 : subreg_shape::operator != (const subreg_shape &other) const
2183 : {
2184 : return !operator == (other);
2185 : }
2186 :
2187 : /* Return an integer that uniquely identifies this shape. Structures
2188 : like rtx_def assume that a mode can fit in an 8-bit bitfield and no
2189 : current mode is anywhere near being 65536 bytes in size, so the
2190 : id comfortably fits in an int. */
2191 :
2192 : inline unsigned HOST_WIDE_INT
2193 11290089 : subreg_shape::unique_id () const
2194 : {
2195 11290089 : { STATIC_ASSERT (MAX_MACHINE_MODE <= (1 << MACHINE_MODE_BITSIZE)); }
2196 11290089 : { STATIC_ASSERT (NUM_POLY_INT_COEFFS <= 3); }
2197 11290089 : { STATIC_ASSERT (sizeof (offset.coeffs[0]) <= 2); }
2198 11290089 : int res = (int) inner_mode + ((int) outer_mode << 8);
2199 11290089 : for (int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2200 11290089 : res += (HOST_WIDE_INT) offset.coeffs[i] << ((1 + i) * 16);
2201 3279160 : return res;
2202 : }
2203 :
2204 : /* Return the shape of a SUBREG rtx. */
2205 :
2206 : inline subreg_shape
2207 3279160 : shape_of_subreg (const_rtx x)
2208 : {
2209 3279160 : return subreg_shape (GET_MODE (SUBREG_REG (x)),
2210 3279160 : SUBREG_BYTE (x), GET_MODE (x));
2211 : }
2212 :
2213 : /* Information about an address. This structure is supposed to be able
2214 : to represent all supported target addresses. Please extend it if it
2215 : is not yet general enough. */
2216 : struct address_info {
2217 : /* The mode of the value being addressed, or VOIDmode if this is
2218 : a load-address operation with no known address mode. */
2219 : machine_mode mode;
2220 :
2221 : /* The address space. */
2222 : addr_space_t as;
2223 :
2224 : /* True if this is an RTX_AUTOINC address. */
2225 : bool autoinc_p;
2226 :
2227 : /* A pointer to the top-level address. */
2228 : rtx *outer;
2229 :
2230 : /* A pointer to the inner address, after all address mutations
2231 : have been stripped from the top-level address. It can be one
2232 : of the following:
2233 :
2234 : - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2235 :
2236 : - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2237 : points to the step value, depending on whether the step is variable
2238 : or constant respectively. SEGMENT is null.
2239 :
2240 : - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2241 : with null fields evaluating to 0. */
2242 : rtx *inner;
2243 :
2244 : /* Components that make up *INNER. Each one may be null or nonnull.
2245 : When nonnull, their meanings are as follows:
2246 :
2247 : - *SEGMENT is the "segment" of memory to which the address refers.
2248 : This value is entirely target-specific and is only called a "segment"
2249 : because that's its most typical use. It contains exactly one UNSPEC,
2250 : pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2251 : reloading.
2252 :
2253 : - *BASE is a variable expression representing a base address.
2254 : It contains exactly one "term", pointed to by BASE_TERM.
2255 : This term can be one of the following:
2256 :
2257 : (1) a REG, or a SUBREG of a REG
2258 : (2) an eliminated REG (a PLUS of (1) and a constant)
2259 : (3) a MEM, or a SUBREG of a MEM
2260 : (4) a SCRATCH
2261 :
2262 : This term is the one that base_reg_class constrains.
2263 :
2264 : - *INDEX is a variable expression representing an index value.
2265 : It may be a scaled expression, such as a MULT. It has exactly
2266 : one "term", pointed to by INDEX_TERM. The possible terms are
2267 : the same as for BASE. This term is the one that index_reg_class
2268 : constrains.
2269 :
2270 : - *DISP is a constant, possibly mutated. DISP_TERM points to the
2271 : unmutated RTX_CONST_OBJ. */
2272 : rtx *segment;
2273 : rtx *base;
2274 : rtx *index;
2275 : rtx *disp;
2276 :
2277 : rtx *segment_term;
2278 : rtx *base_term;
2279 : rtx *index_term;
2280 : rtx *disp_term;
2281 :
2282 : /* In a {PRE,POST}_MODIFY address, this points to a second copy
2283 : of BASE_TERM, otherwise it is null. */
2284 : rtx *base_term2;
2285 :
2286 : /* ADDRESS if this structure describes an address operand, MEM if
2287 : it describes a MEM address. */
2288 : enum rtx_code addr_outer_code;
2289 :
2290 : /* If BASE is nonnull, this is the code of the rtx that contains it. */
2291 : enum rtx_code base_outer_code;
2292 : };
2293 :
2294 : /* This is used to bundle an rtx and a mode together so that the pair
2295 : can be used with the wi:: routines. If we ever put modes into rtx
2296 : integer constants, this should go away and then just pass an rtx in. */
2297 : typedef std::pair <rtx, machine_mode> rtx_mode_t;
2298 :
2299 : namespace wi
2300 : {
2301 : template <>
2302 : struct int_traits <rtx_mode_t>
2303 : {
2304 : static const enum precision_type precision_type = VAR_PRECISION;
2305 : static const bool host_dependent_precision = false;
2306 : /* This ought to be true, except for the special case that BImode
2307 : is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2308 : static const bool is_sign_extended = false;
2309 : static const bool needs_write_val_arg = false;
2310 : static unsigned int get_precision (const rtx_mode_t &);
2311 : static wi::storage_ref decompose (HOST_WIDE_INT *, unsigned int,
2312 : const rtx_mode_t &);
2313 : };
2314 : }
2315 :
2316 : inline unsigned int
2317 1376369018 : wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x)
2318 : {
2319 1376369018 : return GET_MODE_PRECISION (as_a <scalar_mode> (x.second));
2320 : }
2321 :
2322 : inline wi::storage_ref
2323 701167330 : wi::int_traits <rtx_mode_t>::decompose (HOST_WIDE_INT *,
2324 : unsigned int precision,
2325 : const rtx_mode_t &x)
2326 : {
2327 701167330 : gcc_checking_assert (precision == get_precision (x));
2328 701167330 : switch (GET_CODE (x.first))
2329 : {
2330 700490610 : case CONST_INT:
2331 700490610 : if (precision < HOST_BITS_PER_WIDE_INT)
2332 : /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2333 : targets is 1 rather than -1. */
2334 196227849 : gcc_checking_assert (INTVAL (x.first)
2335 : == sext_hwi (INTVAL (x.first), precision)
2336 : || (x.second == BImode && INTVAL (x.first) == 1));
2337 :
2338 700490610 : return wi::storage_ref (&INTVAL (x.first), 1, precision);
2339 :
2340 676720 : case CONST_WIDE_INT:
2341 676720 : return wi::storage_ref (&CONST_WIDE_INT_ELT (x.first, 0),
2342 676720 : CONST_WIDE_INT_NUNITS (x.first), precision);
2343 :
2344 : #if TARGET_SUPPORTS_WIDE_INT == 0
2345 : case CONST_DOUBLE:
2346 : return wi::storage_ref (&CONST_DOUBLE_LOW (x.first), 2, precision);
2347 : #endif
2348 :
2349 0 : default:
2350 0 : gcc_unreachable ();
2351 : }
2352 : }
2353 :
2354 : namespace wi
2355 : {
2356 : hwi_with_prec shwi (HOST_WIDE_INT, machine_mode mode);
2357 : wide_int min_value (machine_mode, signop);
2358 : wide_int max_value (machine_mode, signop);
2359 : }
2360 :
2361 : inline wi::hwi_with_prec
2362 270554 : wi::shwi (HOST_WIDE_INT val, machine_mode mode)
2363 : {
2364 270554 : return shwi (val, GET_MODE_PRECISION (as_a <scalar_mode> (mode)));
2365 : }
2366 :
2367 : /* Produce the smallest number that is represented in MODE. The precision
2368 : is taken from MODE and the sign from SGN. */
2369 : inline wide_int
2370 117861 : wi::min_value (machine_mode mode, signop sgn)
2371 : {
2372 117861 : return min_value (GET_MODE_PRECISION (as_a <scalar_mode> (mode)), sgn);
2373 : }
2374 :
2375 : /* Produce the largest number that is represented in MODE. The precision
2376 : is taken from MODE and the sign from SGN. */
2377 : inline wide_int
2378 67210 : wi::max_value (machine_mode mode, signop sgn)
2379 : {
2380 67210 : return max_value (GET_MODE_PRECISION (as_a <scalar_mode> (mode)), sgn);
2381 : }
2382 :
2383 : namespace wi
2384 : {
2385 : typedef poly_int<NUM_POLY_INT_COEFFS,
2386 : generic_wide_int <wide_int_ref_storage <false, false> > >
2387 : rtx_to_poly_wide_ref;
2388 : rtx_to_poly_wide_ref to_poly_wide (const_rtx, machine_mode);
2389 : }
2390 :
2391 : /* Return the value of a CONST_POLY_INT in its native precision. */
2392 :
2393 : inline wi::rtx_to_poly_wide_ref
2394 0 : const_poly_int_value (const_rtx x)
2395 : {
2396 0 : poly_int<NUM_POLY_INT_COEFFS, WIDE_INT_REF_FOR (wide_int)> res;
2397 0 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2398 0 : res.coeffs[i] = CONST_POLY_INT_COEFFS (x)[i];
2399 0 : return res;
2400 : }
2401 :
2402 : /* Return true if X is a scalar integer or a CONST_POLY_INT. The value
2403 : can then be extracted using wi::to_poly_wide. */
2404 :
2405 : inline bool
2406 100599982 : poly_int_rtx_p (const_rtx x)
2407 : {
2408 100599982 : return CONST_SCALAR_INT_P (x) || CONST_POLY_INT_P (x);
2409 : }
2410 :
2411 : /* Access X (which satisfies poly_int_rtx_p) as a poly_wide_int.
2412 : MODE is the mode of X. */
2413 :
2414 : inline wi::rtx_to_poly_wide_ref
2415 9846531 : wi::to_poly_wide (const_rtx x, machine_mode mode)
2416 : {
2417 9846531 : if (CONST_POLY_INT_P (x))
2418 : return const_poly_int_value (x);
2419 9846531 : return rtx_mode_t (const_cast<rtx> (x), mode);
2420 : }
2421 :
2422 : /* Return the value of X as a poly_int64. */
2423 :
2424 : inline poly_int64
2425 8762774 : rtx_to_poly_int64 (const_rtx x)
2426 : {
2427 8762774 : if (CONST_POLY_INT_P (x))
2428 : {
2429 : poly_int64 res;
2430 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2431 : res.coeffs[i] = CONST_POLY_INT_COEFFS (x)[i].to_shwi ();
2432 : return res;
2433 : }
2434 8762774 : return INTVAL (x);
2435 : }
2436 :
2437 : /* Return true if arbitrary value X is an integer constant that can
2438 : be represented as a poly_int64. Store the value in *RES if so,
2439 : otherwise leave it unmodified. */
2440 :
2441 : inline bool
2442 3550065165 : poly_int_rtx_p (const_rtx x, poly_int64 *res)
2443 : {
2444 2854080796 : if (CONST_INT_P (x))
2445 : {
2446 2572755834 : *res = INTVAL (x);
2447 2572755834 : return true;
2448 : }
2449 : if (CONST_POLY_INT_P (x))
2450 : {
2451 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2452 : if (!wi::fits_shwi_p (CONST_POLY_INT_COEFFS (x)[i]))
2453 : return false;
2454 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2455 : res->coeffs[i] = CONST_POLY_INT_COEFFS (x)[i].to_shwi ();
2456 : return true;
2457 : }
2458 : return false;
2459 : }
2460 :
2461 : extern void init_rtlanal (void);
2462 : extern int rtx_cost (rtx, machine_mode, enum rtx_code, int, bool);
2463 : extern int address_cost (rtx, machine_mode, addr_space_t, bool);
2464 : extern void get_full_rtx_cost (rtx, machine_mode, enum rtx_code, int,
2465 : struct full_rtx_costs *);
2466 : extern bool native_encode_rtx (machine_mode, rtx, vec<target_unit> &,
2467 : unsigned int, unsigned int);
2468 : extern wide_int native_decode_int (const vec<target_unit> &, unsigned int,
2469 : unsigned int, unsigned int);
2470 : extern rtx native_decode_rtx (machine_mode, const vec<target_unit> &,
2471 : unsigned int);
2472 : extern rtx native_decode_vector_rtx (machine_mode, const vec<target_unit> &,
2473 : unsigned int, unsigned int, unsigned int);
2474 : extern poly_uint64 subreg_lsb (const_rtx);
2475 : extern poly_uint64 subreg_size_lsb (poly_uint64, poly_uint64, poly_uint64);
2476 : extern poly_uint64 subreg_size_offset_from_lsb (poly_uint64, poly_uint64,
2477 : poly_uint64);
2478 : extern bool read_modify_subreg_p (const_rtx);
2479 :
2480 : /* Given a subreg's OUTER_MODE, INNER_MODE, and SUBREG_BYTE, return the
2481 : bit offset at which the subreg begins (counting from the least significant
2482 : bit of the operand). */
2483 :
2484 : inline poly_uint64
2485 3146043 : subreg_lsb_1 (machine_mode outer_mode, machine_mode inner_mode,
2486 : poly_uint64 subreg_byte)
2487 : {
2488 6292086 : return subreg_size_lsb (GET_MODE_SIZE (outer_mode),
2489 3146043 : GET_MODE_SIZE (inner_mode), subreg_byte);
2490 : }
2491 :
2492 : /* Return the subreg byte offset for a subreg whose outer mode is
2493 : OUTER_MODE, whose inner mode is INNER_MODE, and where there are
2494 : LSB_SHIFT *bits* between the lsb of the outer value and the lsb of
2495 : the inner value. This is the inverse of subreg_lsb_1 (which converts
2496 : byte offsets to bit shifts). */
2497 :
2498 : inline poly_uint64
2499 3117 : subreg_offset_from_lsb (machine_mode outer_mode,
2500 : machine_mode inner_mode,
2501 : poly_uint64 lsb_shift)
2502 : {
2503 6234 : return subreg_size_offset_from_lsb (GET_MODE_SIZE (outer_mode),
2504 3117 : GET_MODE_SIZE (inner_mode), lsb_shift);
2505 : }
2506 :
2507 : extern unsigned int subreg_regno_offset (unsigned int, machine_mode,
2508 : poly_uint64, machine_mode);
2509 : extern bool subreg_offset_representable_p (unsigned int, machine_mode,
2510 : poly_uint64, machine_mode);
2511 : extern unsigned int subreg_regno (const_rtx);
2512 : extern int simplify_subreg_regno (unsigned int, machine_mode,
2513 : poly_uint64, machine_mode,
2514 : bool allow_stack_regs = false);
2515 : extern int lowpart_subreg_regno (unsigned int, machine_mode,
2516 : machine_mode);
2517 : extern unsigned int subreg_nregs (const_rtx);
2518 : extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx);
2519 : extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, machine_mode);
2520 : extern unsigned int num_sign_bit_copies (const_rtx, machine_mode);
2521 : extern bool constant_pool_constant_p (rtx);
2522 : extern bool truncated_to_mode (machine_mode, const_rtx);
2523 : extern int low_bitmask_len (machine_mode, unsigned HOST_WIDE_INT);
2524 : extern void split_double (rtx, rtx *, rtx *);
2525 : extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0);
2526 : extern void decompose_address (struct address_info *, rtx *,
2527 : machine_mode, addr_space_t, enum rtx_code);
2528 : extern void decompose_lea_address (struct address_info *, rtx *);
2529 : extern void decompose_mem_address (struct address_info *, rtx);
2530 : extern void update_address (struct address_info *);
2531 : extern HOST_WIDE_INT get_index_scale (const struct address_info *);
2532 : extern enum rtx_code get_index_code (const struct address_info *);
2533 :
2534 : /* 1 if RTX is a subreg containing a reg that is already known to be
2535 : sign- or zero-extended from the mode of the subreg to the mode of
2536 : the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2537 : extension.
2538 :
2539 : When used as a LHS, is means that this extension must be done
2540 : when assigning to SUBREG_REG. */
2541 :
2542 : #define SUBREG_PROMOTED_VAR_P(RTX) \
2543 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2544 :
2545 : /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2546 : this gives the necessary extensions:
2547 : 0 - signed (SPR_SIGNED)
2548 : 1 - normal unsigned (SPR_UNSIGNED)
2549 : 2 - value is both sign and unsign extended for mode
2550 : (SPR_SIGNED_AND_UNSIGNED).
2551 : -1 - pointer unsigned, which most often can be handled like unsigned
2552 : extension, except for generating instructions where we need to
2553 : emit special code (ptr_extend insns) on some architectures
2554 : (SPR_POINTER). */
2555 :
2556 : const int SRP_POINTER = -1;
2557 : const int SRP_SIGNED = 0;
2558 : const int SRP_UNSIGNED = 1;
2559 : const int SRP_SIGNED_AND_UNSIGNED = 2;
2560 :
2561 : /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2562 : #define SUBREG_PROMOTED_SET(RTX, VAL) \
2563 : do { \
2564 : rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2565 : (RTX), SUBREG); \
2566 : switch (VAL) \
2567 : { \
2568 : case SRP_POINTER: \
2569 : _rtx->volatil = 0; \
2570 : _rtx->unchanging = 0; \
2571 : break; \
2572 : case SRP_SIGNED: \
2573 : _rtx->volatil = 0; \
2574 : _rtx->unchanging = 1; \
2575 : break; \
2576 : case SRP_UNSIGNED: \
2577 : _rtx->volatil = 1; \
2578 : _rtx->unchanging = 0; \
2579 : break; \
2580 : case SRP_SIGNED_AND_UNSIGNED: \
2581 : _rtx->volatil = 1; \
2582 : _rtx->unchanging = 1; \
2583 : break; \
2584 : } \
2585 : } while (0)
2586 :
2587 : /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2588 : including SRP_SIGNED_AND_UNSIGNED if promoted for
2589 : both signed and unsigned. */
2590 : #define SUBREG_PROMOTED_GET(RTX) \
2591 : (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2592 : + (RTX)->unchanging - 1)
2593 :
2594 : /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2595 : #define SUBREG_PROMOTED_SIGN(RTX) \
2596 : ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2597 : : (RTX)->unchanging - 1)
2598 :
2599 : /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2600 : for SIGNED type. */
2601 : #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2602 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2603 :
2604 : /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2605 : for UNSIGNED type. */
2606 : #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2607 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2608 :
2609 : /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2610 : #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2611 : ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2612 : : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2613 : : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2614 :
2615 : /* True if the REG is the static chain register for some CALL_INSN. */
2616 : #define STATIC_CHAIN_REG_P(RTX) \
2617 : (RTL_FLAG_CHECK1 ("STATIC_CHAIN_REG_P", (RTX), REG)->jump)
2618 :
2619 : /* True if the subreg was generated by LRA for reload insns. Such
2620 : subregs are valid only during LRA. */
2621 : #define LRA_SUBREG_P(RTX) \
2622 : (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2623 :
2624 : /* Access various components of an ASM_OPERANDS rtx. */
2625 :
2626 : #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2627 : #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2628 : #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2629 : #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2630 : #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2631 : #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2632 : #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2633 : #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2634 : XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2635 : #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2636 : XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2637 : #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2638 : GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2639 : #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2640 : #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2641 : #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2642 : #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCLOC (RTX, 6, ASM_OPERANDS)
2643 : #define ASM_INPUT_SOURCE_LOCATION(RTX) XCLOC (RTX, 1, ASM_INPUT)
2644 :
2645 : /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2646 : #define MEM_READONLY_P(RTX) \
2647 : (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2648 :
2649 : /* 1 if RTX is a mem and we should keep the alias set for this mem
2650 : unchanged when we access a component. Set to 1, or example, when we
2651 : are already in a non-addressable component of an aggregate. */
2652 : #define MEM_KEEP_ALIAS_SET_P(RTX) \
2653 : (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2654 :
2655 : /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2656 : #define MEM_VOLATILE_P(RTX) \
2657 : (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2658 : ASM_INPUT)->volatil)
2659 :
2660 : /* 1 if RTX is a mem that cannot trap. */
2661 : #define MEM_NOTRAP_P(RTX) \
2662 : (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2663 :
2664 : /* The memory attribute block. We provide access macros for each value
2665 : in the block and provide defaults if none specified. */
2666 : #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2667 :
2668 : /* The register attribute block. We provide access macros for each value
2669 : in the block and provide defaults if none specified. */
2670 : #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2671 :
2672 : #ifndef GENERATOR_FILE
2673 : /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2674 : set, and may alias anything. Otherwise, the MEM can only alias
2675 : MEMs in a conflicting alias set. This value is set in a
2676 : language-dependent manner in the front-end, and should not be
2677 : altered in the back-end. These set numbers are tested with
2678 : alias_sets_conflict_p. */
2679 : #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2680 :
2681 : /* For a MEM rtx, the decl it is known to refer to, if it is known to
2682 : refer to part of a DECL. It may also be a COMPONENT_REF. */
2683 : #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2684 :
2685 : /* For a MEM rtx, true if its MEM_OFFSET is known. */
2686 : #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2687 :
2688 : /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2689 : #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2690 :
2691 : /* For a MEM rtx, the address space. */
2692 : #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2693 :
2694 : /* For a MEM rtx, true if its MEM_SIZE is known. */
2695 : #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2696 :
2697 : /* For a MEM rtx, the size in bytes of the MEM. */
2698 : #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2699 :
2700 : /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2701 : mode as a default when STRICT_ALIGNMENT, but not if not. */
2702 : #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2703 : #else
2704 : #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2705 : #endif
2706 :
2707 : /* For a REG rtx, the decl it is known to refer to, if it is known to
2708 : refer to part of a DECL. */
2709 : #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2710 :
2711 : /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2712 : HOST_WIDE_INT. */
2713 : #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2714 :
2715 : /* Copy the attributes that apply to memory locations from RHS to LHS. */
2716 : #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2717 : (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2718 : MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2719 : MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2720 : MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2721 : MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2722 : MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2723 :
2724 : /* 1 if RTX is a label_ref for a nonlocal label. */
2725 : /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2726 : REG_LABEL_TARGET note. */
2727 : #define LABEL_REF_NONLOCAL_P(RTX) \
2728 : (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2729 :
2730 : /* 1 if RTX is a code_label that should always be considered to be needed. */
2731 : #define LABEL_PRESERVE_P(RTX) \
2732 : (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2733 :
2734 : /* During sched, 1 if RTX is an insn that must be scheduled together
2735 : with the preceding insn. */
2736 : #define SCHED_GROUP_P(RTX) \
2737 : (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2738 : JUMP_INSN, CALL_INSN)->in_struct)
2739 :
2740 : /* For a SET rtx, SET_DEST is the place that is set
2741 : and SET_SRC is the value it is set to. */
2742 : #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2743 : #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2744 : #define SET_IS_RETURN_P(RTX) \
2745 : (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2746 :
2747 : /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2748 : #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2749 : #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2750 :
2751 : /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2752 : conditionally executing the code on, COND_EXEC_CODE is the code
2753 : to execute if the condition is true. */
2754 : #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2755 : #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2756 :
2757 : /* 1 if RTX is a symbol_ref that addresses this function's rtl
2758 : constants pool. */
2759 : #define CONSTANT_POOL_ADDRESS_P(RTX) \
2760 : (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2761 :
2762 : /* 1 if RTX is a symbol_ref that addresses a value in the file's
2763 : tree constant pool. This information is private to varasm.cc. */
2764 : #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2765 : (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2766 : (RTX), SYMBOL_REF)->frame_related)
2767 :
2768 : /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2769 : #define SYMBOL_REF_FLAG(RTX) \
2770 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2771 :
2772 : /* 1 if RTX is a symbol_ref that has been the library function in
2773 : emit_library_call. */
2774 : #define SYMBOL_REF_USED(RTX) \
2775 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2776 :
2777 : /* 1 if RTX is a symbol_ref for a weak symbol. */
2778 : #define SYMBOL_REF_WEAK(RTX) \
2779 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2780 :
2781 : /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2782 : SYMBOL_REF_CONSTANT. */
2783 : #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2784 :
2785 : /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2786 : pool symbol. */
2787 : #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2788 : (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2789 :
2790 : /* The tree (decl or constant) associated with the symbol, or null. */
2791 : #define SYMBOL_REF_DECL(RTX) \
2792 : (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2793 :
2794 : /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2795 : #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2796 : (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2797 :
2798 : /* The rtx constant pool entry for a symbol, or null. */
2799 : #define SYMBOL_REF_CONSTANT(RTX) \
2800 : (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2801 :
2802 : /* A set of flags on a symbol_ref that are, in some respects, redundant with
2803 : information derivable from the tree decl associated with this symbol.
2804 : Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2805 : decl. In some cases this is a bug. But beyond that, it's nice to cache
2806 : this information to avoid recomputing it. Finally, this allows space for
2807 : the target to store more than one bit of information, as with
2808 : SYMBOL_REF_FLAG. */
2809 : #define SYMBOL_REF_FLAGS(RTX) \
2810 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2811 : ->u2.symbol_ref_flags)
2812 :
2813 : /* These flags are common enough to be defined for all targets. They
2814 : are computed by the default version of targetm.encode_section_info. */
2815 :
2816 : /* Set if this symbol is a function. */
2817 : #define SYMBOL_FLAG_FUNCTION (1 << 0)
2818 : #define SYMBOL_REF_FUNCTION_P(RTX) \
2819 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2820 : /* Set if targetm.binds_local_p is true. */
2821 : #define SYMBOL_FLAG_LOCAL (1 << 1)
2822 : #define SYMBOL_REF_LOCAL_P(RTX) \
2823 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2824 : /* Set if targetm.in_small_data_p is true. */
2825 : #define SYMBOL_FLAG_SMALL (1 << 2)
2826 : #define SYMBOL_REF_SMALL_P(RTX) \
2827 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2828 : /* The three-bit field at [5:3] is true for TLS variables; use
2829 : SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2830 : #define SYMBOL_FLAG_TLS_SHIFT 3
2831 : #define SYMBOL_REF_TLS_MODEL(RTX) \
2832 : ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2833 : /* Set if this symbol is not defined in this translation unit. */
2834 : #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2835 : #define SYMBOL_REF_EXTERNAL_P(RTX) \
2836 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2837 : /* Set if this symbol has a block_symbol structure associated with it. */
2838 : #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2839 : #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2840 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2841 : /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2842 : SYMBOL_REF_HAS_BLOCK_INFO_P. */
2843 : #define SYMBOL_FLAG_ANCHOR (1 << 8)
2844 : #define SYMBOL_REF_ANCHOR_P(RTX) \
2845 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2846 :
2847 : /* Subsequent bits are available for the target to use. */
2848 : #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2849 : #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2850 :
2851 : /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2852 : structure to which the symbol belongs, or NULL if it has not been
2853 : assigned a block. */
2854 : #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2855 :
2856 : /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2857 : the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2858 : RTX has not yet been assigned to a block, or it has not been given an
2859 : offset within that block. */
2860 : #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2861 :
2862 : /* True if RTX is flagged to be a scheduling barrier. */
2863 : #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2864 : (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2865 :
2866 : /* Indicate whether the machine has any sort of auto increment addressing.
2867 : If not, we can avoid checking for REG_INC notes. */
2868 :
2869 : #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2870 : || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2871 : || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2872 : || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2873 : #define AUTO_INC_DEC 1
2874 : #else
2875 : #define AUTO_INC_DEC 0
2876 : #endif
2877 :
2878 : /* Define a macro to look for REG_INC notes,
2879 : but save time on machines where they never exist. */
2880 :
2881 : #if AUTO_INC_DEC
2882 : #define FIND_REG_INC_NOTE(INSN, REG) \
2883 : ((REG) != NULL_RTX && REG_P ((REG)) \
2884 : ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2885 : : find_reg_note ((INSN), REG_INC, (REG)))
2886 : #else
2887 : #define FIND_REG_INC_NOTE(INSN, REG) 0
2888 : #endif
2889 :
2890 : #ifndef HAVE_PRE_INCREMENT
2891 : #define HAVE_PRE_INCREMENT 0
2892 : #endif
2893 :
2894 : #ifndef HAVE_PRE_DECREMENT
2895 : #define HAVE_PRE_DECREMENT 0
2896 : #endif
2897 :
2898 : #ifndef HAVE_POST_INCREMENT
2899 : #define HAVE_POST_INCREMENT 0
2900 : #endif
2901 :
2902 : #ifndef HAVE_POST_DECREMENT
2903 : #define HAVE_POST_DECREMENT 0
2904 : #endif
2905 :
2906 : #ifndef HAVE_POST_MODIFY_DISP
2907 : #define HAVE_POST_MODIFY_DISP 0
2908 : #endif
2909 :
2910 : #ifndef HAVE_POST_MODIFY_REG
2911 : #define HAVE_POST_MODIFY_REG 0
2912 : #endif
2913 :
2914 : #ifndef HAVE_PRE_MODIFY_DISP
2915 : #define HAVE_PRE_MODIFY_DISP 0
2916 : #endif
2917 :
2918 : #ifndef HAVE_PRE_MODIFY_REG
2919 : #define HAVE_PRE_MODIFY_REG 0
2920 : #endif
2921 :
2922 :
2923 : /* Some architectures do not have complete pre/post increment/decrement
2924 : instruction sets, or only move some modes efficiently. These macros
2925 : allow us to tune autoincrement generation. */
2926 :
2927 : #ifndef USE_LOAD_POST_INCREMENT
2928 : #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2929 : #endif
2930 :
2931 : #ifndef USE_LOAD_POST_DECREMENT
2932 : #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2933 : #endif
2934 :
2935 : #ifndef USE_LOAD_PRE_INCREMENT
2936 : #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2937 : #endif
2938 :
2939 : #ifndef USE_LOAD_PRE_DECREMENT
2940 : #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2941 : #endif
2942 :
2943 : #ifndef USE_STORE_POST_INCREMENT
2944 : #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2945 : #endif
2946 :
2947 : #ifndef USE_STORE_POST_DECREMENT
2948 : #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2949 : #endif
2950 :
2951 : #ifndef USE_STORE_PRE_INCREMENT
2952 : #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2953 : #endif
2954 :
2955 : #ifndef USE_STORE_PRE_DECREMENT
2956 : #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2957 : #endif
2958 :
2959 : /* Nonzero when we are generating CONCATs. */
2960 : extern int generating_concat_p;
2961 :
2962 : /* Nonzero when we are expanding trees to RTL. */
2963 : extern int currently_expanding_to_rtl;
2964 :
2965 : /* Generally useful functions. */
2966 :
2967 : #ifndef GENERATOR_FILE
2968 : /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2969 : rather than size. */
2970 :
2971 : inline int
2972 43841164 : set_rtx_cost (rtx x, bool speed_p)
2973 : {
2974 43399374 : return rtx_cost (x, VOIDmode, INSN, 4, speed_p);
2975 : }
2976 :
2977 : /* Like set_rtx_cost, but return both the speed and size costs in C. */
2978 :
2979 : inline void
2980 2220128 : get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c)
2981 : {
2982 2093991 : get_full_rtx_cost (x, VOIDmode, INSN, 4, c);
2983 : }
2984 :
2985 : /* Return the cost of moving X into a register, relative to the cost
2986 : of a register move. SPEED_P is true if optimizing for speed rather
2987 : than size. */
2988 :
2989 : inline int
2990 2852238759 : set_src_cost (rtx x, machine_mode mode, bool speed_p)
2991 : {
2992 2850962710 : return rtx_cost (x, mode, SET, 1, speed_p);
2993 : }
2994 :
2995 : /* Like set_src_cost, but return both the speed and size costs in C. */
2996 :
2997 : inline void
2998 369 : get_full_set_src_cost (rtx x, machine_mode mode, struct full_rtx_costs *c)
2999 : {
3000 369 : get_full_rtx_cost (x, mode, SET, 1, c);
3001 : }
3002 : #endif
3003 :
3004 : /* A convenience macro to validate the arguments of a zero_extract
3005 : expression. It determines whether SIZE lies inclusively within
3006 : [1, RANGE], POS lies inclusively within between [0, RANGE - 1]
3007 : and the sum lies inclusively within [1, RANGE]. RANGE must be
3008 : >= 1, but SIZE and POS may be negative. */
3009 : #define EXTRACT_ARGS_IN_RANGE(SIZE, POS, RANGE) \
3010 : (IN_RANGE ((POS), 0, (unsigned HOST_WIDE_INT) (RANGE) - 1) \
3011 : && IN_RANGE ((SIZE), 1, (unsigned HOST_WIDE_INT) (RANGE) \
3012 : - (unsigned HOST_WIDE_INT)(POS)))
3013 :
3014 : /* In explow.cc */
3015 : extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, machine_mode);
3016 : extern poly_int64 trunc_int_for_mode (poly_int64, machine_mode);
3017 : extern rtx plus_constant (machine_mode, rtx, poly_int64, bool = false);
3018 : extern HOST_WIDE_INT get_stack_check_protect (void);
3019 :
3020 : /* In rtl.cc */
3021 : extern rtx rtx_alloc (RTX_CODE CXX_MEM_STAT_INFO);
3022 : inline rtx
3023 2687432797 : rtx_init (rtx rt, RTX_CODE code)
3024 : {
3025 2687432797 : memset (rt, 0, RTX_HDR_SIZE);
3026 2687432797 : PUT_CODE (rt, code);
3027 2685423445 : return rt;
3028 : }
3029 : #define rtx_alloca(code) \
3030 : rtx_init ((rtx) alloca (RTX_CODE_SIZE ((code))), (code))
3031 : extern rtx rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL, int);
3032 : #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
3033 : #define const_wide_int_alloc(NWORDS) \
3034 : rtx_alloc_v (CONST_WIDE_INT, \
3035 : (sizeof (struct hwivec_def) \
3036 : + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
3037 :
3038 : extern rtvec rtvec_alloc (size_t);
3039 : extern rtvec shallow_copy_rtvec (rtvec);
3040 : extern bool shared_const_p (const_rtx);
3041 : extern rtx copy_rtx (rtx);
3042 : extern enum rtx_code classify_insn (rtx);
3043 : extern void dump_rtx_statistics (void);
3044 :
3045 : /* In emit-rtl.cc */
3046 :
3047 : /* Opcodes used in the bytecode generated by genemit.cc. */
3048 : enum class expand_opcode {
3049 : /* NULL_RTX. */
3050 : NO_RTX,
3051 :
3052 : /* A (match_operand N) or (match_dup N). Followed by the operand number. */
3053 : MATCH_OPERAND,
3054 :
3055 : /* A (match_operator N) or (match_op_dup N) that preserves the original mode.
3056 : Followed by the operand number. */
3057 : MATCH_OPERATOR,
3058 :
3059 : /* A (match_operator N) or (match_op_dup N) that overrides the original mode.
3060 : Followed by the new mode and by the operand number. */
3061 : MATCH_OPERATOR_WITH_MODE,
3062 :
3063 : /* A (match_parallel N) or (match_par_dup N). Followed by the operand
3064 : number. */
3065 : MATCH_PARALLEL,
3066 :
3067 : /* A (clobber (reg:M R)). Followed by M and R. */
3068 : CLOBBER_REG,
3069 :
3070 : /* FIRST_CODE + X represents a normal rtx with code X. */
3071 : FIRST_CODE
3072 : };
3073 :
3074 : extern rtx expand_rtx (const uint8_t *, rtx *);
3075 : extern rtx_insn *complete_seq (const uint8_t *, rtx *);
3076 : extern rtx copy_rtx_if_shared (rtx);
3077 :
3078 : /* In rtl.cc */
3079 : extern unsigned int rtx_size (const_rtx);
3080 : extern rtx shallow_copy_rtx (const_rtx CXX_MEM_STAT_INFO);
3081 :
3082 : typedef bool (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *,
3083 : rtx *, rtx *);
3084 : extern bool rtx_equal_p (const_rtx, const_rtx,
3085 : rtx_equal_p_callback_function = NULL);
3086 :
3087 : extern bool rtvec_all_equal_p (const_rtvec);
3088 : extern bool rtvec_series_p (rtvec, int);
3089 :
3090 : /* Return true if X is a vector constant with a duplicated element value. */
3091 :
3092 : inline bool
3093 301108843 : const_vec_duplicate_p (const_rtx x)
3094 : {
3095 301108843 : return (GET_CODE (x) == CONST_VECTOR
3096 748390 : && CONST_VECTOR_NPATTERNS (x) == 1
3097 722953 : && CONST_VECTOR_DUPLICATE_P (x));
3098 : }
3099 :
3100 : /* Return true if X is a vector constant with a duplicated element value.
3101 : Store the duplicated element in *ELT if so. */
3102 :
3103 : template <typename T>
3104 : inline bool
3105 299885050 : const_vec_duplicate_p (T x, T *elt)
3106 : {
3107 303677557 : if (const_vec_duplicate_p (x))
3108 : {
3109 680046 : *elt = CONST_VECTOR_ENCODED_ELT (x, 0);
3110 30042 : return true;
3111 : }
3112 : return false;
3113 : }
3114 :
3115 : /* Return true if X is a vector with a duplicated element value, either
3116 : constant or nonconstant. Store the duplicated element in *ELT if so. */
3117 :
3118 : template <typename T>
3119 : inline bool
3120 112817723 : vec_duplicate_p (T x, T *elt)
3121 : {
3122 112817723 : if (GET_CODE (x) == VEC_DUPLICATE
3123 197560 : && !VECTOR_MODE_P (GET_MODE (XEXP (x, 0))))
3124 : {
3125 197553 : *elt = XEXP (x, 0);
3126 197553 : return true;
3127 : }
3128 112817723 : return const_vec_duplicate_p (x, elt);
3129 : }
3130 :
3131 : /* If X is a vector constant with a duplicated element value, return that
3132 : element value, otherwise return X. */
3133 :
3134 : template <typename T>
3135 : inline T
3136 1223464 : unwrap_const_vec_duplicate (T x)
3137 : {
3138 1236715 : if (const_vec_duplicate_p (x))
3139 13251 : x = CONST_VECTOR_ELT (x, 0);
3140 1223464 : return x;
3141 : }
3142 :
3143 : /* In emit-rtl.cc. */
3144 : extern wide_int const_vector_int_elt (const_rtx, unsigned int);
3145 : extern rtx const_vector_elt (const_rtx, unsigned int);
3146 : extern bool const_vec_series_p_1 (const_rtx, rtx *, rtx *);
3147 :
3148 : /* Return true if X is an integer constant vector that contains a linear
3149 : series of the form:
3150 :
3151 : { B, B + S, B + 2 * S, B + 3 * S, ... }
3152 :
3153 : for a nonzero S. Store B and S in *BASE_OUT and *STEP_OUT on success. */
3154 :
3155 : inline bool
3156 3997065 : const_vec_series_p (const_rtx x, rtx *base_out, rtx *step_out)
3157 : {
3158 3997065 : if (GET_CODE (x) == CONST_VECTOR
3159 6462 : && CONST_VECTOR_NPATTERNS (x) == 1
3160 4002837 : && !CONST_VECTOR_DUPLICATE_P (x))
3161 5772 : return const_vec_series_p_1 (x, base_out, step_out);
3162 : return false;
3163 : }
3164 :
3165 : /* Return true if X is a vector that contains a linear series of the
3166 : form:
3167 :
3168 : { B, B + S, B + 2 * S, B + 3 * S, ... }
3169 :
3170 : where B and S are constant or nonconstant. Store B and S in
3171 : *BASE_OUT and *STEP_OUT on success. */
3172 :
3173 : inline bool
3174 3997527 : vec_series_p (const_rtx x, rtx *base_out, rtx *step_out)
3175 : {
3176 3997527 : if (GET_CODE (x) == VEC_SERIES)
3177 : {
3178 462 : *base_out = XEXP (x, 0);
3179 462 : *step_out = XEXP (x, 1);
3180 462 : return true;
3181 : }
3182 3997065 : return const_vec_series_p (x, base_out, step_out);
3183 : }
3184 :
3185 : /* Return true if CONST_VECTORs X and Y, which are known to have the same mode,
3186 : also have the same encoding. This means that they are equal whenever their
3187 : operands are equal. */
3188 :
3189 : inline bool
3190 : same_vector_encodings_p (const_rtx x, const_rtx y)
3191 : {
3192 : /* Don't be fussy about the encoding of constant-length vectors,
3193 : since XVECEXP (X, 0) and XVECEXP (Y, 0) list all the elements anyway. */
3194 : if (poly_uint64 (CONST_VECTOR_NUNITS (x)).is_constant ())
3195 : return true;
3196 :
3197 : return (CONST_VECTOR_NPATTERNS (x) == CONST_VECTOR_NPATTERNS (y)
3198 : && (CONST_VECTOR_NELTS_PER_PATTERN (x)
3199 : == CONST_VECTOR_NELTS_PER_PATTERN (y)));
3200 : }
3201 :
3202 : /* Return the unpromoted (outer) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3203 :
3204 : inline scalar_int_mode
3205 7 : subreg_unpromoted_mode (rtx x)
3206 : {
3207 7 : gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x));
3208 7 : return as_a <scalar_int_mode> (GET_MODE (x));
3209 : }
3210 :
3211 : /* Return the promoted (inner) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3212 :
3213 : inline scalar_int_mode
3214 14 : subreg_promoted_mode (rtx x)
3215 : {
3216 14 : gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x));
3217 14 : return as_a <scalar_int_mode> (GET_MODE (SUBREG_REG (x)));
3218 : }
3219 :
3220 : /* In emit-rtl.cc */
3221 : extern rtvec gen_rtvec_v (int, rtx *);
3222 : extern rtvec gen_rtvec_v (int, rtx_insn **);
3223 : extern rtx gen_reg_rtx (machine_mode);
3224 : extern rtx gen_rtx_REG_offset (rtx, machine_mode, unsigned int, poly_int64);
3225 : extern rtx gen_reg_rtx_offset (rtx, machine_mode, int);
3226 : extern rtx gen_reg_rtx_and_attrs (rtx);
3227 : extern rtx_code_label *gen_label_rtx (void);
3228 : extern rtx gen_lowpart_common (machine_mode, rtx);
3229 :
3230 : /* In cse.cc */
3231 : extern rtx gen_lowpart_if_possible (machine_mode, rtx);
3232 :
3233 : /* In emit-rtl.cc */
3234 : extern rtx gen_highpart (machine_mode, rtx);
3235 : extern rtx gen_highpart_mode (machine_mode, machine_mode, rtx);
3236 : extern rtx operand_subword (rtx, poly_uint64, int, machine_mode);
3237 :
3238 : /* In emit-rtl.cc */
3239 : extern rtx operand_subword_force (rtx, poly_uint64, machine_mode);
3240 : extern bool subreg_lowpart_p (const_rtx);
3241 : extern poly_uint64 subreg_size_lowpart_offset (poly_uint64, poly_uint64);
3242 :
3243 : /* Return true if a subreg of mode OUTERMODE would only access part of
3244 : an inner register with mode INNERMODE. The other bits of the inner
3245 : register would then be "don't care" on read. The behavior for writes
3246 : depends on REGMODE_NATURAL_SIZE; bits in the same REGMODE_NATURAL_SIZE-d
3247 : chunk would be clobbered but other bits would be preserved. */
3248 :
3249 : inline bool
3250 896361832 : partial_subreg_p (machine_mode outermode, machine_mode innermode)
3251 : {
3252 : /* Modes involved in a subreg must be ordered. In particular, we must
3253 : always know at compile time whether the subreg is paradoxical. */
3254 879187505 : poly_int64 outer_prec = GET_MODE_PRECISION (outermode);
3255 896361832 : poly_int64 inner_prec = GET_MODE_PRECISION (innermode);
3256 896361832 : gcc_checking_assert (ordered_p (outer_prec, inner_prec));
3257 896274267 : return maybe_lt (outer_prec, inner_prec);
3258 : }
3259 :
3260 : /* Likewise return true if X is a subreg that is smaller than the inner
3261 : register. Use read_modify_subreg_p to test whether writing to such
3262 : a subreg preserves any part of the inner register. */
3263 :
3264 : inline bool
3265 60311603 : partial_subreg_p (const_rtx x)
3266 : {
3267 59893066 : if (GET_CODE (x) != SUBREG)
3268 : return false;
3269 11079505 : return partial_subreg_p (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3270 : }
3271 :
3272 : /* Return true if a subreg with the given outer and inner modes is
3273 : paradoxical. */
3274 :
3275 : inline bool
3276 292779559 : paradoxical_subreg_p (machine_mode outermode, machine_mode innermode)
3277 : {
3278 : /* Modes involved in a subreg must be ordered. In particular, we must
3279 : always know at compile time whether the subreg is paradoxical. */
3280 250317322 : poly_int64 outer_prec = GET_MODE_PRECISION (outermode);
3281 292779548 : poly_int64 inner_prec = GET_MODE_PRECISION (innermode);
3282 292779559 : gcc_checking_assert (ordered_p (outer_prec, inner_prec));
3283 292214055 : return maybe_gt (outer_prec, inner_prec);
3284 : }
3285 :
3286 : /* Return true if X is a paradoxical subreg, false otherwise. */
3287 :
3288 : inline bool
3289 500232676 : paradoxical_subreg_p (const_rtx x)
3290 : {
3291 489362996 : if (GET_CODE (x) != SUBREG)
3292 : return false;
3293 60361364 : return paradoxical_subreg_p (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3294 : }
3295 :
3296 : /* Return the SUBREG_BYTE for an OUTERMODE lowpart of an INNERMODE value. */
3297 :
3298 : inline poly_uint64
3299 222044307 : subreg_lowpart_offset (machine_mode outermode, machine_mode innermode)
3300 : {
3301 444088614 : return subreg_size_lowpart_offset (GET_MODE_SIZE (outermode),
3302 222044307 : GET_MODE_SIZE (innermode));
3303 : }
3304 :
3305 : /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3306 : return the smaller of the two modes if they are different sizes,
3307 : otherwise return the outer mode. */
3308 :
3309 : inline machine_mode
3310 13310065 : narrower_subreg_mode (machine_mode outermode, machine_mode innermode)
3311 : {
3312 13310065 : return paradoxical_subreg_p (outermode, innermode) ? innermode : outermode;
3313 : }
3314 :
3315 : /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3316 : return the mode that is big enough to hold both the outer and inner
3317 : values. Prefer the outer mode in the event of a tie. */
3318 :
3319 : inline machine_mode
3320 113244875 : wider_subreg_mode (machine_mode outermode, machine_mode innermode)
3321 : {
3322 109128775 : return partial_subreg_p (outermode, innermode) ? innermode : outermode;
3323 : }
3324 :
3325 : /* Likewise for subreg X. */
3326 :
3327 : inline machine_mode
3328 9071839 : wider_subreg_mode (const_rtx x)
3329 : {
3330 13623227 : return wider_subreg_mode (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3331 : }
3332 :
3333 : extern poly_uint64 subreg_size_highpart_offset (poly_uint64, poly_uint64);
3334 :
3335 : /* Return the SUBREG_BYTE for an OUTERMODE highpart of an INNERMODE value. */
3336 :
3337 : inline poly_uint64
3338 43196 : subreg_highpart_offset (machine_mode outermode, machine_mode innermode)
3339 : {
3340 86392 : return subreg_size_highpart_offset (GET_MODE_SIZE (outermode),
3341 43196 : GET_MODE_SIZE (innermode));
3342 : }
3343 :
3344 : extern poly_int64 byte_lowpart_offset (machine_mode, machine_mode);
3345 : extern poly_int64 subreg_memory_offset (machine_mode, machine_mode,
3346 : poly_uint64);
3347 : extern poly_int64 subreg_memory_offset (const_rtx);
3348 : extern rtx make_safe_from (rtx, rtx);
3349 : extern rtx convert_memory_address_addr_space_1 (scalar_int_mode, rtx,
3350 : addr_space_t, bool, bool);
3351 : extern rtx convert_memory_address_addr_space (scalar_int_mode, rtx,
3352 : addr_space_t);
3353 : #define convert_memory_address(to_mode,x) \
3354 : convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
3355 : extern const char *get_insn_name (int);
3356 : extern rtx_insn *get_last_insn_anywhere (void);
3357 : extern rtx_insn *get_first_nonnote_insn (void);
3358 : extern rtx_insn *get_last_nonnote_insn (void);
3359 : extern void start_sequence (void);
3360 : extern void push_to_sequence (rtx_insn *);
3361 : extern void push_to_sequence2 (rtx_insn *, rtx_insn *);
3362 : extern rtx_insn *end_sequence (void);
3363 : #if TARGET_SUPPORTS_WIDE_INT == 0
3364 : extern double_int rtx_to_double_int (const_rtx);
3365 : #endif
3366 : extern void cwi_output_hex (FILE *, const_rtx);
3367 : #if TARGET_SUPPORTS_WIDE_INT == 0
3368 : extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
3369 : machine_mode);
3370 : #endif
3371 : extern rtx immed_wide_int_const (const poly_wide_int_ref &, machine_mode);
3372 :
3373 : /* In varasm.cc */
3374 : extern rtx force_const_mem (machine_mode, rtx);
3375 :
3376 : /* In varasm.cc */
3377 :
3378 : struct function;
3379 : extern rtx get_pool_constant (const_rtx);
3380 : extern rtx get_pool_constant_mark (rtx, bool *);
3381 : extern fixed_size_mode get_pool_mode (const_rtx);
3382 : extern rtx simplify_subtraction (rtx);
3383 : extern void decide_function_section (tree);
3384 :
3385 : /* In emit-rtl.cc */
3386 : extern rtx_insn *emit_insn_before (rtx, rtx_insn *);
3387 : extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block);
3388 : extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, location_t);
3389 : extern rtx_jump_insn *emit_jump_insn_before (rtx, rtx_insn *);
3390 : extern rtx_jump_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *);
3391 : extern rtx_jump_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *,
3392 : location_t);
3393 : extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *);
3394 : extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *);
3395 : extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, location_t);
3396 : extern rtx_insn *emit_debug_insn_before (rtx, rtx_insn *);
3397 : extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx_insn *);
3398 : extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx_insn *, location_t);
3399 : extern rtx_barrier *emit_barrier_before (rtx_insn *);
3400 : extern rtx_code_label *emit_label_before (rtx_code_label *, rtx_insn *);
3401 : extern rtx_note *emit_note_before (enum insn_note, rtx_insn *);
3402 : extern rtx_insn *emit_insn_after (rtx, rtx_insn *);
3403 : extern rtx_insn *emit_insn_after_noloc (rtx, rtx_insn *, basic_block);
3404 : extern rtx_insn *emit_insn_after_setloc (rtx, rtx_insn *, location_t);
3405 : extern rtx_jump_insn *emit_jump_insn_after (rtx, rtx_insn *);
3406 : extern rtx_jump_insn *emit_jump_insn_after_noloc (rtx, rtx_insn *);
3407 : extern rtx_jump_insn *emit_jump_insn_after_setloc (rtx, rtx_insn *, location_t);
3408 : extern rtx_insn *emit_call_insn_after (rtx, rtx_insn *);
3409 : extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx_insn *);
3410 : extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx_insn *, location_t);
3411 : extern rtx_insn *emit_debug_insn_after (rtx, rtx_insn *);
3412 : extern rtx_insn *emit_debug_insn_after_noloc (rtx, rtx_insn *);
3413 : extern rtx_insn *emit_debug_insn_after_setloc (rtx, rtx_insn *, location_t);
3414 : extern rtx_barrier *emit_barrier_after (rtx_insn *);
3415 : extern rtx_insn *emit_label_after (rtx_insn *, rtx_insn *);
3416 : extern rtx_note *emit_note_after (enum insn_note, rtx_insn *);
3417 : extern rtx_insn *emit_insn (rtx);
3418 : extern rtx_insn *emit_debug_insn (rtx);
3419 : extern rtx_insn *emit_jump_insn (rtx);
3420 : extern rtx_insn *emit_likely_jump_insn (rtx);
3421 : extern rtx_insn *emit_unlikely_jump_insn (rtx);
3422 : extern rtx_insn *emit_call_insn (rtx);
3423 : extern rtx_code_label *emit_label (rtx);
3424 : extern rtx_jump_table_data *emit_jump_table_data (rtx);
3425 : extern rtx_barrier *emit_barrier (void);
3426 : extern rtx_note *emit_note (enum insn_note);
3427 : extern rtx_note *emit_note_copy (rtx_note *);
3428 : extern rtx_insn *gen_clobber (rtx);
3429 : extern rtx_insn *emit_clobber (rtx);
3430 : extern rtx_insn *gen_use (rtx);
3431 : extern rtx_insn *emit_use (rtx);
3432 : extern rtx_insn *make_insn_raw (rtx);
3433 : extern void add_function_usage_to (rtx, rtx);
3434 : extern rtx_call_insn *last_call_insn (void);
3435 : extern rtx_insn *previous_insn (rtx_insn *);
3436 : extern rtx_insn *next_insn (rtx_insn *);
3437 : extern rtx_insn *prev_nonnote_insn (rtx_insn *);
3438 : extern rtx_insn *next_nonnote_insn (rtx_insn *);
3439 : extern rtx_insn *prev_nondebug_insn (rtx_insn *);
3440 : extern rtx_insn *next_nondebug_insn (rtx_insn *);
3441 : extern rtx_insn *prev_nonnote_nondebug_insn (rtx_insn *);
3442 : extern rtx_insn *prev_nonnote_nondebug_insn_bb (rtx_insn *);
3443 : extern rtx_insn *next_nonnote_nondebug_insn (rtx_insn *);
3444 : extern rtx_insn *next_nonnote_nondebug_insn_bb (rtx_insn *);
3445 : extern rtx_insn *prev_real_insn (rtx_insn *);
3446 : extern rtx_insn *next_real_insn (rtx_insn *);
3447 : extern rtx_insn *prev_real_nondebug_insn (rtx_insn *);
3448 : extern rtx_insn *next_real_nondebug_insn (rtx);
3449 : extern rtx_insn *prev_active_insn (rtx_insn *);
3450 : extern rtx_insn *next_active_insn (rtx_insn *);
3451 : extern bool active_insn_p (const rtx_insn *);
3452 :
3453 : /* In emit-rtl.cc */
3454 : extern int insn_line (const rtx_insn *);
3455 : extern const char * insn_file (const rtx_insn *);
3456 : extern tree insn_scope (const rtx_insn *);
3457 : extern expanded_location insn_location (const rtx_insn *);
3458 : extern int insn_discriminator (const rtx_insn *);
3459 : extern location_t prologue_location, epilogue_location;
3460 :
3461 : /* In jump.cc */
3462 : extern enum rtx_code reverse_condition (enum rtx_code);
3463 : extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code);
3464 : extern enum rtx_code swap_condition (enum rtx_code);
3465 : extern enum rtx_code unsigned_condition (enum rtx_code);
3466 : extern enum rtx_code signed_condition (enum rtx_code);
3467 : extern void mark_jump_label (rtx, rtx_insn *, int);
3468 :
3469 : /* Return true if integer comparison operator CODE interprets its operands
3470 : as unsigned. */
3471 :
3472 : inline bool
3473 4648271 : unsigned_condition_p (enum rtx_code code)
3474 : {
3475 4648271 : return unsigned_condition (code) == code;
3476 : }
3477 :
3478 : /* In jump.cc */
3479 : extern rtx_insn *delete_related_insns (rtx);
3480 :
3481 : /* In recog.cc */
3482 : extern rtx *find_constant_term_loc (rtx *);
3483 :
3484 : /* In emit-rtl.cc */
3485 : extern rtx_insn *try_split (rtx, rtx_insn *, int);
3486 :
3487 : /* In insn-recog.cc (generated by genrecog). */
3488 : extern rtx_insn *split_insns (rtx, rtx_insn *);
3489 :
3490 : /* In simplify-rtx.cc */
3491 :
3492 : /* A class that records the context in which a simplification
3493 : is being mode. */
3494 68425246 : class simplify_context
3495 : {
3496 : public:
3497 : rtx simplify_unary_operation (rtx_code, machine_mode, rtx, machine_mode);
3498 : rtx simplify_binary_operation (rtx_code, machine_mode, rtx, rtx);
3499 : rtx simplify_ternary_operation (rtx_code, machine_mode, machine_mode,
3500 : rtx, rtx, rtx);
3501 : rtx simplify_relational_operation (rtx_code, machine_mode, machine_mode,
3502 : rtx, rtx);
3503 : rtx simplify_ior_with_common_term (machine_mode, rtx, rtx);
3504 : rtx simplify_subreg (machine_mode, rtx, machine_mode, poly_uint64);
3505 :
3506 : rtx lowpart_subreg (machine_mode, rtx, machine_mode);
3507 :
3508 : rtx simplify_merge_mask (rtx, rtx, int);
3509 :
3510 : rtx simplify_gen_unary (rtx_code, machine_mode, rtx, machine_mode);
3511 : rtx simplify_gen_binary (rtx_code, machine_mode, rtx, rtx);
3512 : rtx simplify_gen_ternary (rtx_code, machine_mode, machine_mode,
3513 : rtx, rtx, rtx);
3514 : rtx simplify_gen_relational (rtx_code, machine_mode, machine_mode, rtx, rtx);
3515 : rtx simplify_gen_subreg (machine_mode, rtx, machine_mode, poly_uint64);
3516 : rtx simplify_gen_vec_select (rtx, unsigned int);
3517 :
3518 : /* Tracks the level of MEM nesting for the value being simplified:
3519 : 0 means the value is not in a MEM, >0 means it is. This is needed
3520 : because the canonical representation of multiplication is different
3521 : inside a MEM than outside. */
3522 : unsigned int mem_depth = 0;
3523 :
3524 : /* Tracks number of simplify_associative_operation calls performed during
3525 : outermost simplify* call. */
3526 : unsigned int assoc_count = 0;
3527 :
3528 : /* Limit for the above number, return NULL from
3529 : simplify_associative_operation after we reach that assoc_count. */
3530 : static const unsigned int max_assoc_count = 64;
3531 :
3532 : private:
3533 : rtx simplify_truncation (machine_mode, rtx, machine_mode);
3534 : rtx simplify_byte_swapping_operation (rtx_code, machine_mode, rtx, rtx);
3535 : rtx simplify_associative_operation (rtx_code, machine_mode, rtx, rtx);
3536 : rtx simplify_distributive_operation (rtx_code, machine_mode, rtx, rtx);
3537 : rtx simplify_logical_relational_operation (rtx_code, machine_mode, rtx, rtx,
3538 : bool = false);
3539 : rtx simplify_binary_operation_series (rtx_code, machine_mode, rtx, rtx);
3540 : rtx simplify_distribute_over_subregs (rtx_code, machine_mode, rtx, rtx);
3541 : rtx simplify_shift_const_int (rtx_code, machine_mode, rtx, unsigned int);
3542 : rtx simplify_plus_minus (rtx_code, machine_mode, rtx, rtx);
3543 : rtx simplify_cond_clz_ctz (rtx, rtx_code, rtx, rtx);
3544 :
3545 : rtx simplify_unary_operation_1 (rtx_code, machine_mode, rtx);
3546 : rtx simplify_binary_operation_1 (rtx_code, machine_mode, rtx, rtx, rtx, rtx);
3547 : rtx simplify_ternary_operation_1 (rtx_code, machine_mode, machine_mode,
3548 : rtx, rtx, rtx);
3549 : rtx simplify_relational_operation_1 (rtx_code, machine_mode, machine_mode,
3550 : rtx, rtx);
3551 : };
3552 :
3553 : inline rtx
3554 19132254 : simplify_unary_operation (rtx_code code, machine_mode mode, rtx op,
3555 : machine_mode op_mode)
3556 : {
3557 19131978 : return simplify_context ().simplify_unary_operation (code, mode, op,
3558 : op_mode);
3559 : }
3560 :
3561 : inline rtx
3562 202418815 : simplify_binary_operation (rtx_code code, machine_mode mode, rtx op0, rtx op1)
3563 : {
3564 202417371 : return simplify_context ().simplify_binary_operation (code, mode, op0, op1);
3565 : }
3566 :
3567 : inline rtx
3568 34449521 : simplify_ternary_operation (rtx_code code, machine_mode mode,
3569 : machine_mode op0_mode, rtx op0, rtx op1, rtx op2)
3570 : {
3571 34449521 : return simplify_context ().simplify_ternary_operation (code, mode, op0_mode,
3572 95817 : op0, op1, op2);
3573 : }
3574 :
3575 : inline rtx
3576 61489760 : simplify_relational_operation (rtx_code code, machine_mode mode,
3577 : machine_mode op_mode, rtx op0, rtx op1)
3578 : {
3579 61489760 : return simplify_context ().simplify_relational_operation (code, mode,
3580 202931 : op_mode, op0, op1);
3581 : }
3582 :
3583 : inline rtx
3584 21902829 : simplify_subreg (machine_mode outermode, rtx op, machine_mode innermode,
3585 : poly_uint64 byte)
3586 : {
3587 21902829 : return simplify_context ().simplify_subreg (outermode, op, innermode, byte);
3588 : }
3589 :
3590 : inline rtx
3591 807801 : simplify_gen_unary (rtx_code code, machine_mode mode, rtx op,
3592 : machine_mode op_mode)
3593 : {
3594 1656744 : return simplify_context ().simplify_gen_unary (code, mode, op, op_mode);
3595 : }
3596 :
3597 : inline rtx
3598 37102227 : simplify_gen_binary (rtx_code code, machine_mode mode, rtx op0, rtx op1)
3599 : {
3600 87402399 : return simplify_context ().simplify_gen_binary (code, mode, op0, op1);
3601 : }
3602 :
3603 : inline rtx
3604 2188617 : simplify_gen_ternary (rtx_code code, machine_mode mode, machine_mode op0_mode,
3605 : rtx op0, rtx op1, rtx op2)
3606 : {
3607 2188617 : return simplify_context ().simplify_gen_ternary (code, mode, op0_mode,
3608 : op0, op1, op2);
3609 : }
3610 :
3611 : inline rtx
3612 2976574 : simplify_gen_relational (rtx_code code, machine_mode mode,
3613 : machine_mode op_mode, rtx op0, rtx op1)
3614 : {
3615 5435661 : return simplify_context ().simplify_gen_relational (code, mode, op_mode,
3616 : op0, op1);
3617 : }
3618 :
3619 : inline rtx
3620 10597685 : simplify_gen_subreg (machine_mode outermode, rtx op, machine_mode innermode,
3621 : poly_uint64 byte)
3622 : {
3623 10286811 : return simplify_context ().simplify_gen_subreg (outermode, op,
3624 : innermode, byte);
3625 : }
3626 :
3627 : inline rtx
3628 643961 : simplify_gen_vec_select (rtx op, unsigned int index)
3629 : {
3630 643961 : return simplify_context ().simplify_gen_vec_select (op, index);
3631 : }
3632 :
3633 : inline rtx
3634 29375915 : lowpart_subreg (machine_mode outermode, rtx op, machine_mode innermode)
3635 : {
3636 30670744 : return simplify_context ().lowpart_subreg (outermode, op, innermode);
3637 : }
3638 :
3639 : extern rtx simplify_const_unary_operation (enum rtx_code, machine_mode,
3640 : rtx, machine_mode);
3641 : extern rtx simplify_const_binary_operation (enum rtx_code, machine_mode,
3642 : rtx, rtx);
3643 : extern rtx simplify_const_relational_operation (enum rtx_code,
3644 : machine_mode, rtx, rtx);
3645 : extern rtx simplify_replace_fn_rtx (rtx, const_rtx,
3646 : rtx (*fn) (rtx, const_rtx, void *), void *);
3647 : extern rtx simplify_replace_rtx (rtx, const_rtx, rtx);
3648 : extern rtx simplify_rtx (const_rtx);
3649 : extern rtx avoid_constant_pool_reference (rtx);
3650 : extern rtx delegitimize_mem_from_attrs (rtx);
3651 : extern bool mode_signbit_p (machine_mode, const_rtx);
3652 : extern bool val_signbit_p (machine_mode, unsigned HOST_WIDE_INT);
3653 : extern bool val_signbit_known_set_p (machine_mode,
3654 : unsigned HOST_WIDE_INT);
3655 : extern bool val_signbit_known_clear_p (machine_mode,
3656 : unsigned HOST_WIDE_INT);
3657 : extern bool reverse_rotate_by_imm_p (machine_mode, unsigned int, rtx);
3658 :
3659 : /* In reginfo.cc */
3660 : extern machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
3661 : const predefined_function_abi *);
3662 : extern const HARD_REG_SET &simplifiable_subregs (const subreg_shape &);
3663 :
3664 : /* In emit-rtl.cc */
3665 : extern rtx set_for_reg_notes (rtx);
3666 : extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
3667 : extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx);
3668 : extern void set_insn_deleted (rtx_insn *);
3669 :
3670 : /* Functions in rtlanal.cc */
3671 :
3672 : extern rtx single_set_2 (const rtx_insn *, const_rtx);
3673 : extern rtx simple_regno_set (rtx, unsigned int);
3674 : extern bool contains_symbol_ref_p (const_rtx);
3675 : extern bool contains_symbolic_reference_p (const_rtx);
3676 : extern bool contains_constant_pool_address_p (const_rtx);
3677 : extern void add_auto_inc_notes (rtx_insn *, rtx);
3678 : extern bool single_output_fused_pair_p (rtx_insn *);
3679 :
3680 : /* Handle the cheap and common cases inline for performance. */
3681 :
3682 6776555702 : inline rtx single_set (const rtx_insn *insn)
3683 : {
3684 6776555702 : if (!INSN_P (insn))
3685 : return NULL_RTX;
3686 :
3687 6609486054 : if (GET_CODE (PATTERN (insn)) == SET)
3688 : return PATTERN (insn);
3689 :
3690 : /* Defer to the more expensive case. */
3691 1948826208 : return single_set_2 (insn, PATTERN (insn));
3692 : }
3693 :
3694 : extern scalar_int_mode get_address_mode (rtx mem);
3695 : extern bool rtx_addr_can_trap_p (const_rtx);
3696 : extern bool nonzero_address_p (const_rtx);
3697 : extern bool rtx_unstable_p (const_rtx);
3698 : extern bool rtx_varies_p (const_rtx, bool);
3699 : extern bool rtx_addr_varies_p (const_rtx, bool);
3700 : extern tree get_call_fndecl (const rtx_insn *);
3701 : extern HOST_WIDE_INT get_integer_term (const_rtx);
3702 : extern rtx get_related_value (const_rtx);
3703 : extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT);
3704 : extern void split_const (rtx, rtx *, rtx *);
3705 : extern rtx strip_offset (rtx, poly_int64 *);
3706 : extern poly_int64 get_args_size (const_rtx);
3707 : extern bool unsigned_reg_p (rtx);
3708 : extern bool reg_mentioned_p (const_rtx, const_rtx);
3709 : extern int count_occurrences (const_rtx, const_rtx, int);
3710 : extern bool reg_referenced_p (const_rtx, const_rtx);
3711 : extern bool reg_used_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3712 : extern bool reg_set_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3713 : extern int commutative_operand_precedence (rtx);
3714 : extern bool swap_commutative_operands_p (rtx, rtx);
3715 : extern bool modified_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3716 : extern bool no_labels_between_p (const rtx_insn *, const rtx_insn *);
3717 : extern bool modified_in_p (const_rtx, const_rtx);
3718 : extern bool reg_set_p (const_rtx, const_rtx);
3719 : extern bool multiple_sets (const_rtx);
3720 : extern bool set_noop_p (const_rtx);
3721 : extern bool noop_move_p (const rtx_insn *);
3722 : extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *);
3723 : extern bool reg_overlap_mentioned_p (const_rtx, const_rtx);
3724 : extern const_rtx set_of (const_rtx, const_rtx);
3725 : extern void record_hard_reg_sets (rtx, const_rtx, void *);
3726 : extern void record_hard_reg_uses (rtx *, void *);
3727 : extern void find_all_hard_regs (const_rtx, HARD_REG_SET *);
3728 : extern void find_all_hard_reg_sets (const rtx_insn *, HARD_REG_SET *, bool);
3729 : extern void note_pattern_stores (const_rtx,
3730 : void (*) (rtx, const_rtx, void *), void *);
3731 : extern void note_stores (const rtx_insn *,
3732 : void (*) (rtx, const_rtx, void *), void *);
3733 : extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
3734 : extern bool dead_or_set_p (const rtx_insn *, const_rtx);
3735 : extern bool dead_or_set_regno_p (const rtx_insn *, unsigned int);
3736 : extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx);
3737 : extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int);
3738 : extern rtx find_reg_equal_equiv_note (const_rtx);
3739 : extern rtx find_constant_src (const rtx_insn *);
3740 : extern bool find_reg_fusage (const_rtx, enum rtx_code, const_rtx);
3741 : extern bool find_regno_fusage (const_rtx, enum rtx_code, unsigned int);
3742 : extern rtx alloc_reg_note (enum reg_note, rtx, rtx);
3743 : extern void add_reg_note (rtx, enum reg_note, rtx);
3744 : extern void add_int_reg_note (rtx_insn *, enum reg_note, int);
3745 : extern void add_args_size_note (rtx_insn *, poly_int64);
3746 : extern void add_shallow_copy_of_reg_note (rtx_insn *, rtx);
3747 : extern rtx duplicate_reg_note (rtx);
3748 : extern void remove_note (rtx_insn *, const_rtx);
3749 : extern bool remove_reg_equal_equiv_notes (rtx_insn *, bool = false);
3750 : extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3751 : extern bool side_effects_p (const_rtx);
3752 : extern bool volatile_refs_p (const_rtx);
3753 : extern bool volatile_insn_p (const_rtx);
3754 : extern bool may_trap_p_1 (const_rtx, unsigned);
3755 : extern bool may_trap_p (const_rtx);
3756 : extern bool may_trap_or_fault_p (const_rtx);
3757 : extern bool can_throw_internal (const_rtx);
3758 : extern bool can_throw_external (const_rtx);
3759 : extern bool insn_could_throw_p (const_rtx);
3760 : extern bool insn_nothrow_p (const_rtx);
3761 : extern bool can_nonlocal_goto (const rtx_insn *);
3762 : extern void copy_reg_eh_region_note_forward (rtx, rtx_insn *, rtx);
3763 : extern void copy_reg_eh_region_note_backward (rtx, rtx_insn *, rtx);
3764 : extern rtx replace_rtx (rtx, rtx, rtx, bool = false);
3765 : extern void replace_label (rtx *, rtx, rtx, bool);
3766 : extern void replace_label_in_insn (rtx_insn *, rtx_insn *, rtx_insn *, bool);
3767 : extern bool rtx_referenced_p (const_rtx, const_rtx);
3768 : extern bool tablejump_p (const rtx_insn *, rtx_insn **, rtx_jump_table_data **);
3769 : extern rtx tablejump_casesi_pattern (const rtx_insn *insn);
3770 : extern bool computed_jump_p (const rtx_insn *);
3771 : extern bool tls_referenced_p (const_rtx);
3772 : extern bool contains_mem_rtx_p (rtx x);
3773 : extern bool register_asm_p (const_rtx);
3774 :
3775 : /* Overload for refers_to_regno_p for checking a single register. */
3776 : inline bool
3777 139827775 : refers_to_regno_p (unsigned int regnum, const_rtx x, rtx* loc = NULL)
3778 : {
3779 139827775 : return refers_to_regno_p (regnum, regnum + 1, x, loc);
3780 : }
3781 :
3782 : /* Callback for for_each_inc_dec, to process the autoinc operation OP
3783 : within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3784 : NULL. The callback is passed the same opaque ARG passed to
3785 : for_each_inc_dec. Return zero to continue looking for other
3786 : autoinc operations or any other value to interrupt the traversal and
3787 : return that value to the caller of for_each_inc_dec. */
3788 : typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src,
3789 : rtx srcoff, void *arg);
3790 : extern int for_each_inc_dec (rtx, for_each_inc_dec_fn, void *arg);
3791 :
3792 : extern rtx regno_use_in (unsigned int, rtx);
3793 : extern bool auto_inc_p (const_rtx);
3794 : extern bool in_insn_list_p (const rtx_insn_list *, const rtx_insn *);
3795 : extern void remove_node_from_insn_list (const rtx_insn *, rtx_insn_list **);
3796 : extern bool loc_mentioned_in_p (rtx *, const_rtx);
3797 : extern rtx_insn *find_first_parameter_load (rtx_insn *, rtx_insn *);
3798 : extern bool keep_with_call_p (const rtx_insn *);
3799 : extern bool label_is_jump_target_p (const_rtx, const rtx_insn *);
3800 : extern int pattern_cost (rtx, bool);
3801 : extern int insn_cost (rtx_insn *, bool);
3802 : extern unsigned seq_cost (const rtx_insn *, bool);
3803 :
3804 : /* Given an insn and condition, return a canonical description of
3805 : the test being made. */
3806 : extern rtx canonicalize_condition (rtx_insn *, rtx, int, rtx_insn **, rtx,
3807 : int, int);
3808 :
3809 : /* Given a JUMP_INSN, return a canonical description of the test
3810 : being made. */
3811 : extern rtx get_condition (rtx_insn *, rtx_insn **, int, int);
3812 :
3813 : /* Information about a subreg of a hard register. */
3814 : struct subreg_info
3815 : {
3816 : /* Offset of first hard register involved in the subreg. */
3817 : int offset;
3818 : /* Number of hard registers involved in the subreg. In the case of
3819 : a paradoxical subreg, this is the number of registers that would
3820 : be modified by writing to the subreg; some of them may be don't-care
3821 : when reading from the subreg. */
3822 : int nregs;
3823 : /* Whether this subreg can be represented as a hard reg with the new
3824 : mode (by adding OFFSET to the original hard register). */
3825 : bool representable_p;
3826 : };
3827 :
3828 : extern void subreg_get_info (unsigned int, machine_mode,
3829 : poly_uint64, machine_mode,
3830 : struct subreg_info *);
3831 :
3832 : /* lists.cc */
3833 :
3834 : extern void free_EXPR_LIST_list (rtx_expr_list **);
3835 : extern void free_INSN_LIST_list (rtx_insn_list **);
3836 : extern void free_EXPR_LIST_node (rtx);
3837 : extern void free_INSN_LIST_node (rtx);
3838 : extern rtx_insn_list *alloc_INSN_LIST (rtx, rtx);
3839 : extern rtx_insn_list *copy_INSN_LIST (rtx_insn_list *);
3840 : extern rtx_insn_list *concat_INSN_LIST (rtx_insn_list *, rtx_insn_list *);
3841 : extern rtx_expr_list *alloc_EXPR_LIST (int, rtx, rtx);
3842 : extern void remove_free_INSN_LIST_elem (rtx_insn *, rtx_insn_list **);
3843 : extern rtx remove_list_elem (rtx, rtx *);
3844 : extern rtx_insn *remove_free_INSN_LIST_node (rtx_insn_list **);
3845 : extern rtx remove_free_EXPR_LIST_node (rtx_expr_list **);
3846 :
3847 :
3848 : /* reginfo.cc */
3849 :
3850 : /* Resize reg info. */
3851 : extern bool resize_reg_info (void);
3852 : /* Free up register info memory. */
3853 : extern void free_reg_info (void);
3854 : extern void init_subregs_of_mode (void);
3855 : extern void finish_subregs_of_mode (void);
3856 : extern void reginfo_cc_finalize (void);
3857 :
3858 : /* recog.cc */
3859 : extern rtx extract_asm_operands (rtx);
3860 : extern int asm_noperands (const_rtx);
3861 : extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
3862 : machine_mode *, location_t *);
3863 : extern void get_referenced_operands (const char *, bool *, unsigned int);
3864 :
3865 : extern enum reg_class reg_preferred_class (int);
3866 : extern enum reg_class reg_alternate_class (int);
3867 : extern enum reg_class reg_allocno_class (int);
3868 : extern void setup_reg_classes (int, enum reg_class, enum reg_class,
3869 : enum reg_class);
3870 :
3871 : extern void split_all_insns (void);
3872 : extern void split_all_insns_noflow (void);
3873 :
3874 : #define MAX_SAVED_CONST_INT 64
3875 : extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
3876 :
3877 : #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3878 : #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3879 : #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3880 : #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3881 : extern GTY(()) rtx const_true_rtx;
3882 :
3883 : extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE];
3884 :
3885 : /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3886 : same as VOIDmode. */
3887 :
3888 : #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3889 :
3890 : /* Likewise, for the constants 1 and 2 and -1. */
3891 :
3892 : #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3893 : #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3894 : #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3895 :
3896 : extern GTY(()) rtx pc_rtx;
3897 : extern GTY(()) rtx ret_rtx;
3898 : extern GTY(()) rtx simple_return_rtx;
3899 : extern GTY(()) rtx_insn *invalid_insn_rtx;
3900 :
3901 : /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3902 : is used to represent the frame pointer. This is because the
3903 : hard frame pointer and the automatic variables are separated by an amount
3904 : that cannot be determined until after register allocation. We can assume
3905 : that in this case ELIMINABLE_REGS will be defined, one action of which
3906 : will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3907 : #ifndef HARD_FRAME_POINTER_REGNUM
3908 : #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3909 : #endif
3910 :
3911 : #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3912 : #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3913 : (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3914 : #endif
3915 :
3916 : #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3917 : #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3918 : (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3919 : #endif
3920 :
3921 : /* Index labels for global_rtl. */
3922 : enum global_rtl_index
3923 : {
3924 : GR_STACK_POINTER,
3925 : GR_FRAME_POINTER,
3926 : /* For register elimination to work properly these hard_frame_pointer_rtx,
3927 : frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3928 : the same register. */
3929 : #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3930 : GR_ARG_POINTER = GR_FRAME_POINTER,
3931 : #endif
3932 : #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3933 : GR_HARD_FRAME_POINTER = GR_FRAME_POINTER,
3934 : #else
3935 : GR_HARD_FRAME_POINTER,
3936 : #endif
3937 : #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3938 : #if HARD_FRAME_POINTER_IS_ARG_POINTER
3939 : GR_ARG_POINTER = GR_HARD_FRAME_POINTER,
3940 : #else
3941 : GR_ARG_POINTER,
3942 : #endif
3943 : #endif
3944 : GR_VIRTUAL_INCOMING_ARGS,
3945 : GR_VIRTUAL_STACK_ARGS,
3946 : GR_VIRTUAL_STACK_DYNAMIC,
3947 : GR_VIRTUAL_OUTGOING_ARGS,
3948 : GR_VIRTUAL_CFA,
3949 : GR_VIRTUAL_PREFERRED_STACK_BOUNDARY,
3950 :
3951 : GR_MAX
3952 : };
3953 :
3954 : /* Target-dependent globals. */
3955 : struct GTY(()) target_rtl {
3956 : /* All references to the hard registers in global_rtl_index go through
3957 : these unique rtl objects. On machines where the frame-pointer and
3958 : arg-pointer are the same register, they use the same unique object.
3959 :
3960 : After register allocation, other rtl objects which used to be pseudo-regs
3961 : may be clobbered to refer to the frame-pointer register.
3962 : But references that were originally to the frame-pointer can be
3963 : distinguished from the others because they contain frame_pointer_rtx.
3964 :
3965 : When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3966 : tricky: until register elimination has taken place hard_frame_pointer_rtx
3967 : should be used if it is being set, and frame_pointer_rtx otherwise. After
3968 : register elimination hard_frame_pointer_rtx should always be used.
3969 : On machines where the two registers are same (most) then these are the
3970 : same. */
3971 : rtx x_global_rtl[GR_MAX];
3972 :
3973 : /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3974 : rtx x_pic_offset_table_rtx;
3975 :
3976 : /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3977 : This is used to implement __builtin_return_address for some machines;
3978 : see for instance the MIPS port. */
3979 : rtx x_return_address_pointer_rtx;
3980 :
3981 : /* Commonly used RTL for hard registers. These objects are not
3982 : necessarily unique, so we allocate them separately from global_rtl.
3983 : They are initialized once per compilation unit, then copied into
3984 : regno_reg_rtx at the beginning of each function. */
3985 : rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER];
3986 :
3987 : /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3988 : rtx x_top_of_stack[MAX_MACHINE_MODE];
3989 :
3990 : /* Static hunks of RTL used by the aliasing code; these are treated
3991 : as persistent to avoid unnecessary RTL allocations. */
3992 : rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER];
3993 :
3994 : /* The default memory attributes for each mode. */
3995 : class mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE];
3996 :
3997 : /* Track if RTL has been initialized. */
3998 : bool target_specific_initialized;
3999 : };
4000 :
4001 : extern GTY(()) struct target_rtl default_target_rtl;
4002 : #if SWITCHABLE_TARGET
4003 : extern struct target_rtl *this_target_rtl;
4004 : #else
4005 : #define this_target_rtl (&default_target_rtl)
4006 : #endif
4007 :
4008 : #define global_rtl \
4009 : (this_target_rtl->x_global_rtl)
4010 : #define pic_offset_table_rtx \
4011 : (this_target_rtl->x_pic_offset_table_rtx)
4012 : #define return_address_pointer_rtx \
4013 : (this_target_rtl->x_return_address_pointer_rtx)
4014 : #define top_of_stack \
4015 : (this_target_rtl->x_top_of_stack)
4016 : #define mode_mem_attrs \
4017 : (this_target_rtl->x_mode_mem_attrs)
4018 :
4019 : /* All references to certain hard regs, except those created
4020 : by allocating pseudo regs into them (when that's possible),
4021 : go through these unique rtx objects. */
4022 : #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
4023 : #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
4024 : #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
4025 : #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
4026 :
4027 : #ifndef GENERATOR_FILE
4028 : /* Return the attributes of a MEM rtx. */
4029 : inline const class mem_attrs *
4030 11400539580 : get_mem_attrs (const_rtx x)
4031 : {
4032 11400539580 : class mem_attrs *attrs;
4033 :
4034 3850988153 : attrs = MEM_ATTRS (x);
4035 9621260614 : if (!attrs)
4036 551945757 : attrs = mode_mem_attrs[(int) GET_MODE (x)];
4037 9588834513 : return attrs;
4038 : }
4039 : #endif
4040 :
4041 : /* Include the RTL generation functions. */
4042 :
4043 : #ifndef GENERATOR_FILE
4044 : #include "genrtl.h"
4045 : #undef gen_rtx_ASM_INPUT
4046 : #define gen_rtx_ASM_INPUT(MODE, ARG0) \
4047 : gen_rtx_fmt_sL (ASM_INPUT, (MODE), (ARG0), 0)
4048 : #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
4049 : gen_rtx_fmt_sL (ASM_INPUT, (MODE), (ARG0), (LOC))
4050 : #endif
4051 :
4052 : /* There are some RTL codes that require special attention; the
4053 : generation functions included above do the raw handling. If you
4054 : add to this list, modify special_rtx in gengenrtl.cc as well. */
4055 :
4056 : extern rtx_expr_list *gen_rtx_EXPR_LIST (machine_mode, rtx, rtx);
4057 : extern rtx_insn_list *gen_rtx_INSN_LIST (machine_mode, rtx, rtx);
4058 : extern rtx_insn *
4059 : gen_rtx_INSN (machine_mode mode, rtx_insn *prev_insn, rtx_insn *next_insn,
4060 : basic_block bb, rtx pattern, location_t location, int code,
4061 : rtx reg_notes);
4062 : extern rtx gen_rtx_CONST_INT (machine_mode, HOST_WIDE_INT);
4063 : extern rtx gen_rtx_CONST_VECTOR (machine_mode, rtvec);
4064 : extern void set_mode_and_regno (rtx, machine_mode, unsigned int);
4065 : extern rtx init_raw_REG (rtx, machine_mode, unsigned int);
4066 : extern rtx gen_raw_REG (machine_mode, unsigned int);
4067 : #define alloca_raw_REG(mode, regno) \
4068 : init_raw_REG (rtx_alloca (REG), (mode), (regno))
4069 : extern rtx gen_rtx_REG (machine_mode, unsigned int);
4070 : extern rtx gen_rtx_SUBREG (machine_mode, rtx, poly_uint64);
4071 : extern rtx gen_rtx_MEM (machine_mode, rtx);
4072 : extern rtx gen_rtx_VAR_LOCATION (machine_mode, tree, rtx,
4073 : enum var_init_status);
4074 :
4075 : #ifdef GENERATOR_FILE
4076 : #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
4077 : #else
4078 : inline void
4079 1372890224 : PUT_MODE (rtx x, machine_mode mode)
4080 : {
4081 1372890224 : if (REG_P (x))
4082 345288281 : set_mode_and_regno (x, mode, REGNO (x));
4083 : else
4084 1027601943 : PUT_MODE_RAW (x, mode);
4085 1372890224 : }
4086 : #endif
4087 :
4088 : #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
4089 :
4090 : /* Virtual registers are used during RTL generation to refer to locations into
4091 : the stack frame when the actual location isn't known until RTL generation
4092 : is complete. The routine instantiate_virtual_regs replaces these with
4093 : the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
4094 : a constant. */
4095 :
4096 : #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
4097 :
4098 : /* This points to the first word of the incoming arguments passed on the stack,
4099 : either by the caller or by the callee when pretending it was passed by the
4100 : caller. */
4101 :
4102 : #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
4103 :
4104 : #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
4105 :
4106 : /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
4107 : variable on the stack. Otherwise, it points to the first variable on
4108 : the stack. */
4109 :
4110 : #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
4111 :
4112 : #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
4113 :
4114 : /* This points to the location of dynamically-allocated memory on the stack
4115 : immediately after the stack pointer has been adjusted by the amount
4116 : desired. */
4117 :
4118 : #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
4119 :
4120 : #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
4121 :
4122 : /* This points to the location in the stack at which outgoing arguments should
4123 : be written when the stack is pre-pushed (arguments pushed using push
4124 : insns always use sp). */
4125 :
4126 : #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
4127 :
4128 : #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
4129 :
4130 : /* This points to the Canonical Frame Address of the function. This
4131 : should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
4132 : but is calculated relative to the arg pointer for simplicity; the
4133 : frame pointer nor stack pointer are necessarily fixed relative to
4134 : the CFA until after reload. */
4135 :
4136 : #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
4137 :
4138 : #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
4139 :
4140 : #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
4141 :
4142 : /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
4143 : when finalized. */
4144 :
4145 : #define virtual_preferred_stack_boundary_rtx \
4146 : (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
4147 :
4148 : #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
4149 : ((FIRST_VIRTUAL_REGISTER) + 5)
4150 :
4151 : #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
4152 :
4153 : /* Nonzero if REGNUM is a pointer into the stack frame. */
4154 : #define REGNO_PTR_FRAME_P(REGNUM) \
4155 : ((REGNUM) == STACK_POINTER_REGNUM \
4156 : || (REGNUM) == FRAME_POINTER_REGNUM \
4157 : || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
4158 : || (REGNUM) == ARG_POINTER_REGNUM \
4159 : || VIRTUAL_REGISTER_NUM_P (REGNUM))
4160 :
4161 : /* REGNUM never really appearing in the INSN stream. */
4162 : #define INVALID_REGNUM (~(unsigned int) 0)
4163 :
4164 : /* REGNUM for which no debug information can be generated. */
4165 : #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
4166 :
4167 : extern rtx output_constant_def (tree, int);
4168 : extern rtx lookup_constant_def (tree);
4169 :
4170 : /* Nonzero after end of reload pass.
4171 : Set to 1 or 0 by reload1.cc. */
4172 :
4173 : extern int reload_completed;
4174 :
4175 : /* Nonzero after thread_prologue_and_epilogue_insns has run. */
4176 : extern int epilogue_completed;
4177 :
4178 : /* Set to true once the first split pass after register allocation has
4179 : been run. Ports can treat that split pass as a "lowering" pass,
4180 : with some instructions only being valid before the lowering
4181 : and others only being valid after the lowering.
4182 :
4183 : One use of this variable is to cope with address calculations during
4184 : register allocation. The register allocator needs to be able to perform
4185 : address arithmetic (such as addition) at arbitrary points in the program,
4186 : regardless of whether the condition-code flags are live at that point.
4187 : If a target cannot add without clobbering the condition-code flags,
4188 : it must either (1) hide the condition-code flags entirely from RTL
4189 : or (2) ensure that the condition-code flags are never live before
4190 : or during register allocation.
4191 :
4192 : (2) requires a boundary between "the condition-code flags are never live"
4193 : and "the condition-code flags might be live". reload_completed can be
4194 : used for this purpose, provided that all clobbers of the CC register
4195 : are explicit before and during register allocation.
4196 :
4197 : However, if the condition-code flags are never live before or during
4198 : register allocation, there is no real need for patterns to have an explicit
4199 : clobber of the flags at that point. Not having a clobber would allow more
4200 : recog attempts to succeed, both before and during register allocation.
4201 :
4202 : post_ra_split_completed is an alternative boundary to reload_completed.
4203 : It allows sets and uses of the condition-code flags, such as individual
4204 : comparison and jump instructions, to be introduced in the first split pass
4205 : after register allocation, while also allowing new implicit clobbers of
4206 : the condition-code flags to be introduced at any time before that point.
4207 :
4208 : Ports that use post_ra_split_completed for this purpose would have an
4209 : "unlowered" form with the following properties:
4210 :
4211 : (a) The condition-code flags are never live between instructions.
4212 : (That is, they are never defined by one instruction and used
4213 : by another instruction.)
4214 :
4215 : (b) As a consequence, new clobbers of the condition-code flags
4216 : can be introduced at any time.
4217 :
4218 : (c) RTL instruction patterns (such as addition) can omit clobbers of the
4219 : condition-code flags even if the flags are in fact clobbered.
4220 :
4221 : In contrast, the "lowered" form would have these properties:
4222 :
4223 : (d) The condition-code flags can be live between instructions.
4224 : That is, RTL instruction patterns can set the condition-code flags
4225 : or use the condition-code flags.
4226 :
4227 : (e) All clobbers of the condition-code flags must be explicit in the RTL
4228 : instruction patterns.
4229 :
4230 : Instructions covered by (c) would require !post_ra_split_completed
4231 : and would need to be split into instructions that satisfy (d) or (e).
4232 : Instructions covered by (d) would require post_ra_split_completed,
4233 : so that they are not accidentally matched before lowering has taken
4234 : place. */
4235 : extern bool post_ra_split_completed;
4236 :
4237 : /* Set to 1 while reload_as_needed is operating.
4238 : Required by some machines to handle any generated moves differently. */
4239 :
4240 : extern int reload_in_progress;
4241 :
4242 : /* Set to true while in IRA. */
4243 : extern bool ira_in_progress;
4244 :
4245 : /* Set to true while in LRA. */
4246 : extern bool lra_in_progress;
4247 :
4248 : /* This macro indicates whether you may create a new
4249 : pseudo-register. */
4250 :
4251 : #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
4252 :
4253 : #ifdef STACK_REGS
4254 : /* Nonzero after end of regstack pass.
4255 : Set to 1 or 0 by reg-stack.cc. */
4256 : extern int regstack_completed;
4257 : #endif
4258 :
4259 : /* If this is nonzero, we do not bother generating VOLATILE
4260 : around volatile memory references, and we are willing to
4261 : output indirect addresses. If cse is to follow, we reject
4262 : indirect addresses so a useful potential cse is generated;
4263 : if it is used only once, instruction combination will produce
4264 : the same indirect address eventually. */
4265 : extern int cse_not_expected;
4266 :
4267 : /* Translates rtx code to tree code, for those codes needed by
4268 : real_arithmetic. The function returns an int because the caller may not
4269 : know what `enum tree_code' means. */
4270 :
4271 : extern int rtx_to_tree_code (enum rtx_code);
4272 :
4273 : /* In cse.cc */
4274 : extern int delete_trivially_dead_insns (rtx_insn *, int);
4275 : extern bool exp_equiv_p (const_rtx, const_rtx, int, bool);
4276 :
4277 : typedef bool (*hash_rtx_callback_function) (const_rtx, machine_mode, rtx *,
4278 : machine_mode *);
4279 : extern unsigned hash_rtx (const_rtx, machine_mode, int *, int *,
4280 : bool, hash_rtx_callback_function = NULL);
4281 :
4282 : /* In dse.cc */
4283 : extern bool check_for_inc_dec (rtx_insn *insn);
4284 :
4285 : /* In jump.cc */
4286 : extern bool comparison_dominates_p (enum rtx_code, enum rtx_code);
4287 : extern bool jump_to_label_p (const rtx_insn *);
4288 : extern bool condjump_p (const rtx_insn *);
4289 : extern bool any_condjump_p (const rtx_insn *);
4290 : extern bool any_uncondjump_p (const rtx_insn *);
4291 : extern rtx pc_set (const rtx_insn *);
4292 : extern rtx condjump_label (const rtx_insn *);
4293 : extern bool simplejump_p (const rtx_insn *);
4294 : extern bool returnjump_p (const rtx_insn *);
4295 : extern bool eh_returnjump_p (rtx_insn *);
4296 : extern bool onlyjump_p (const rtx_insn *);
4297 : extern bool invert_jump_1 (rtx_jump_insn *, rtx);
4298 : extern bool invert_jump (rtx_jump_insn *, rtx, int);
4299 : extern bool rtx_renumbered_equal_p (const_rtx, const_rtx);
4300 : extern int true_regnum (const_rtx);
4301 : extern unsigned int reg_or_subregno (const_rtx);
4302 : extern bool redirect_jump_1 (rtx_insn *, rtx);
4303 : extern void redirect_jump_2 (rtx_jump_insn *, rtx, rtx, int, int);
4304 : extern bool redirect_jump (rtx_jump_insn *, rtx, int);
4305 : extern void rebuild_jump_labels (rtx_insn *);
4306 : extern void rebuild_jump_labels_chain (rtx_insn *);
4307 : extern rtx reversed_comparison (const_rtx, machine_mode);
4308 : extern enum rtx_code reversed_comparison_code (const_rtx, const rtx_insn *);
4309 : extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
4310 : const_rtx, const rtx_insn *);
4311 : extern void delete_for_peephole (rtx_insn *, rtx_insn *);
4312 : extern bool condjump_in_parallel_p (const rtx_insn *);
4313 :
4314 : /* In emit-rtl.cc. */
4315 : extern int max_reg_num (void);
4316 : extern int max_label_num (void);
4317 : extern int get_first_label_num (void);
4318 : extern void maybe_set_first_label_num (rtx_code_label *);
4319 : extern void delete_insns_since (rtx_insn *);
4320 : extern void mark_reg_pointer (rtx, int);
4321 : extern void mark_user_reg (rtx);
4322 : extern void reset_used_flags (rtx);
4323 : extern void set_used_flags (rtx);
4324 : extern void reorder_insns (rtx_insn *, rtx_insn *, rtx_insn *);
4325 : extern void reorder_insns_nobb (rtx_insn *, rtx_insn *, rtx_insn *);
4326 : extern int get_max_insn_count (void);
4327 : extern bool in_sequence_p (void);
4328 : extern void init_emit (void);
4329 : extern void init_emit_regs (void);
4330 : extern void init_derived_machine_modes (void);
4331 : extern void init_emit_once (void);
4332 : extern void push_topmost_sequence (void);
4333 : extern void pop_topmost_sequence (void);
4334 : extern void set_new_first_and_last_insn (rtx_insn *, rtx_insn *);
4335 : extern void unshare_all_rtl (void);
4336 : extern void unshare_all_rtl_again (rtx_insn *);
4337 : extern void unshare_all_rtl_in_chain (rtx_insn *);
4338 : extern void verify_rtl_sharing (void);
4339 : extern void add_insn (rtx_insn *);
4340 : extern void add_insn_before (rtx_insn *, rtx_insn *, basic_block);
4341 : extern void add_insn_after (rtx_insn *, rtx_insn *, basic_block);
4342 : extern void remove_insn (rtx_insn *);
4343 : extern rtx_insn *emit (rtx, bool = true);
4344 : extern void emit_insn_at_entry (rtx);
4345 : extern rtx gen_lowpart_SUBREG (machine_mode, rtx);
4346 : extern rtx gen_const_mem (machine_mode, rtx);
4347 : extern rtx gen_frame_mem (machine_mode, rtx);
4348 : extern rtx gen_tmp_stack_mem (machine_mode, rtx);
4349 : extern bool validate_subreg (machine_mode, machine_mode,
4350 : const_rtx, poly_uint64);
4351 :
4352 : /* In combine.cc */
4353 : extern unsigned int extended_count (const_rtx, machine_mode, bool);
4354 : extern rtx remove_death (unsigned int, rtx_insn *);
4355 : extern rtx make_compound_operation (rtx, enum rtx_code);
4356 :
4357 : /* In sched-rgn.cc. */
4358 : extern void schedule_insns (void);
4359 :
4360 : /* In sched-ebb.cc. */
4361 : extern void schedule_ebbs (void);
4362 :
4363 : /* In sel-sched-dump.cc. */
4364 : extern void sel_sched_fix_param (const char *param, const char *val);
4365 :
4366 : /* In print-rtl.cc */
4367 : extern const char *print_rtx_head;
4368 : extern void debug (const rtx_def &ref);
4369 : extern void debug (const rtx_def *ptr);
4370 : extern void debug_rtx (const_rtx);
4371 : extern void debug_rtx_list (const rtx_insn *, int);
4372 : extern void debug_rtx_range (const rtx_insn *, const rtx_insn *);
4373 : extern const rtx_insn *debug_rtx_find (const rtx_insn *, int);
4374 : extern void print_mem_expr (FILE *, const_tree);
4375 : extern void print_rtl (FILE *, const_rtx);
4376 : extern void print_simple_rtl (FILE *, const_rtx);
4377 : extern void print_rtl_single (FILE *, const_rtx);
4378 : extern void print_rtl_single_with_indent (FILE *, const_rtx, int);
4379 : extern void print_inline_rtx (FILE *, const_rtx, int);
4380 :
4381 : /* In stmt.cc */
4382 : extern void expand_null_return (void);
4383 : extern void expand_naked_return (void);
4384 : extern void emit_jump (rtx);
4385 :
4386 : /* Memory operation built-ins differ by return value. Mapping
4387 : of the enum values is following:
4388 : - RETURN_BEGIN - return destination, e.g. memcpy
4389 : - RETURN_END - return destination + n, e.g. mempcpy
4390 : - RETURN_END_MINUS_ONE - return a pointer to the terminating
4391 : null byte of the string, e.g. strcpy
4392 : */
4393 :
4394 : enum memop_ret
4395 : {
4396 : RETURN_BEGIN,
4397 : RETURN_END,
4398 : RETURN_END_MINUS_ONE
4399 : };
4400 :
4401 : /* In expr.cc */
4402 : extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
4403 : unsigned int, memop_ret);
4404 : extern poly_int64 find_args_size_adjust (rtx_insn *);
4405 : extern poly_int64 fixup_args_size_notes (rtx_insn *, rtx_insn *, poly_int64);
4406 :
4407 : /* In expmed.cc */
4408 : extern void init_expmed (void);
4409 : extern void expand_inc (rtx, rtx);
4410 : extern void expand_dec (rtx, rtx);
4411 :
4412 : /* In lower-subreg.cc */
4413 : extern void init_lower_subreg (void);
4414 :
4415 : /* In gcse.cc */
4416 : extern bool can_copy_p (machine_mode);
4417 : extern bool can_assign_to_reg_without_clobbers_p (rtx, machine_mode);
4418 : extern rtx_insn *prepare_copy_insn (rtx, rtx);
4419 :
4420 : /* In cprop.cc */
4421 : extern rtx fis_get_condition (rtx_insn *);
4422 :
4423 : /* In ira.cc */
4424 : extern HARD_REG_SET eliminable_regset;
4425 : extern void mark_elimination (int, int);
4426 :
4427 : /* In reginfo.cc */
4428 : extern bool reg_classes_intersect_p (reg_class_t, reg_class_t);
4429 : extern bool reg_class_subset_p (reg_class_t, reg_class_t);
4430 : extern void globalize_reg (tree, int);
4431 : extern void init_reg_modes_target (void);
4432 : extern void init_regs (void);
4433 : extern void reinit_regs (void);
4434 : extern void init_fake_stack_mems (void);
4435 : extern void save_register_info (void);
4436 : extern void init_reg_sets (void);
4437 : extern void regclass (rtx, int);
4438 : extern void reg_scan (rtx_insn *, unsigned int);
4439 : extern void fix_register (const char *, int, int);
4440 : extern const HARD_REG_SET *valid_mode_changes_for_regno (unsigned int);
4441 :
4442 : /* In reload1.cc */
4443 : extern bool function_invariant_p (const_rtx);
4444 :
4445 : /* In calls.cc */
4446 : enum libcall_type
4447 : {
4448 : LCT_NORMAL = 0,
4449 : LCT_CONST = 1,
4450 : LCT_PURE = 2,
4451 : LCT_NORETURN = 3,
4452 : LCT_THROW = 4,
4453 : LCT_RETURNS_TWICE = 5
4454 : };
4455 :
4456 : extern rtx emit_library_call_value_1 (int, rtx, rtx, enum libcall_type,
4457 : machine_mode, int, rtx_mode_t *);
4458 :
4459 : /* Output a library call and discard the returned value. FUN is the
4460 : address of the function, as a SYMBOL_REF rtx, and OUTMODE is the mode
4461 : of the (discarded) return value. FN_TYPE is LCT_NORMAL for `normal'
4462 : calls, LCT_CONST for `const' calls, LCT_PURE for `pure' calls, or
4463 : another LCT_ value for other types of library calls.
4464 :
4465 : There are different overloads of this function for different numbers
4466 : of arguments. In each case the argument value is followed by its mode. */
4467 :
4468 : inline void
4469 0 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode)
4470 : {
4471 0 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 0, NULL);
4472 0 : }
4473 :
4474 : inline void
4475 0 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4476 : rtx arg1, machine_mode arg1_mode)
4477 : {
4478 0 : rtx_mode_t args[] = { rtx_mode_t (arg1, arg1_mode) };
4479 0 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 1, args);
4480 0 : }
4481 :
4482 : inline void
4483 178 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4484 : rtx arg1, machine_mode arg1_mode,
4485 : rtx arg2, machine_mode arg2_mode)
4486 : {
4487 178 : rtx_mode_t args[] = {
4488 : rtx_mode_t (arg1, arg1_mode),
4489 : rtx_mode_t (arg2, arg2_mode)
4490 178 : };
4491 178 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 2, args);
4492 178 : }
4493 :
4494 : inline void
4495 441 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4496 : rtx arg1, machine_mode arg1_mode,
4497 : rtx arg2, machine_mode arg2_mode,
4498 : rtx arg3, machine_mode arg3_mode)
4499 : {
4500 441 : rtx_mode_t args[] = {
4501 : rtx_mode_t (arg1, arg1_mode),
4502 : rtx_mode_t (arg2, arg2_mode),
4503 : rtx_mode_t (arg3, arg3_mode)
4504 441 : };
4505 441 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 3, args);
4506 441 : }
4507 :
4508 : inline void
4509 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4510 : rtx arg1, machine_mode arg1_mode,
4511 : rtx arg2, machine_mode arg2_mode,
4512 : rtx arg3, machine_mode arg3_mode,
4513 : rtx arg4, machine_mode arg4_mode)
4514 : {
4515 : rtx_mode_t args[] = {
4516 : rtx_mode_t (arg1, arg1_mode),
4517 : rtx_mode_t (arg2, arg2_mode),
4518 : rtx_mode_t (arg3, arg3_mode),
4519 : rtx_mode_t (arg4, arg4_mode)
4520 : };
4521 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 4, args);
4522 : }
4523 :
4524 : /* Like emit_library_call, but return the value produced by the call.
4525 : Use VALUE to store the result if it is nonnull, otherwise pick a
4526 : convenient location. */
4527 :
4528 : inline rtx
4529 16 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4530 : machine_mode outmode)
4531 : {
4532 16 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 0, NULL);
4533 : }
4534 :
4535 : inline rtx
4536 38979 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4537 : machine_mode outmode,
4538 : rtx arg1, machine_mode arg1_mode)
4539 : {
4540 38979 : rtx_mode_t args[] = { rtx_mode_t (arg1, arg1_mode) };
4541 38979 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 1, args);
4542 : }
4543 :
4544 : inline rtx
4545 75367 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4546 : machine_mode outmode,
4547 : rtx arg1, machine_mode arg1_mode,
4548 : rtx arg2, machine_mode arg2_mode)
4549 : {
4550 75367 : rtx_mode_t args[] = {
4551 : rtx_mode_t (arg1, arg1_mode),
4552 : rtx_mode_t (arg2, arg2_mode)
4553 75367 : };
4554 75367 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 2, args);
4555 : }
4556 :
4557 : inline rtx
4558 897 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4559 : machine_mode outmode,
4560 : rtx arg1, machine_mode arg1_mode,
4561 : rtx arg2, machine_mode arg2_mode,
4562 : rtx arg3, machine_mode arg3_mode)
4563 : {
4564 897 : rtx_mode_t args[] = {
4565 : rtx_mode_t (arg1, arg1_mode),
4566 : rtx_mode_t (arg2, arg2_mode),
4567 : rtx_mode_t (arg3, arg3_mode)
4568 897 : };
4569 897 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 3, args);
4570 : }
4571 :
4572 : inline rtx
4573 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4574 : machine_mode outmode,
4575 : rtx arg1, machine_mode arg1_mode,
4576 : rtx arg2, machine_mode arg2_mode,
4577 : rtx arg3, machine_mode arg3_mode,
4578 : rtx arg4, machine_mode arg4_mode)
4579 : {
4580 : rtx_mode_t args[] = {
4581 : rtx_mode_t (arg1, arg1_mode),
4582 : rtx_mode_t (arg2, arg2_mode),
4583 : rtx_mode_t (arg3, arg3_mode),
4584 : rtx_mode_t (arg4, arg4_mode)
4585 : };
4586 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 4, args);
4587 : }
4588 :
4589 : /* In varasm.cc */
4590 : extern void init_varasm_once (void);
4591 :
4592 : extern rtx make_debug_expr_from_rtl (const_rtx);
4593 :
4594 : /* In read-rtl.cc */
4595 : #ifdef GENERATOR_FILE
4596 : extern bool read_rtx (const char *, vec<rtx> *);
4597 : #endif
4598 :
4599 : /* In alias.cc */
4600 : extern rtx canon_rtx (rtx);
4601 : extern rtx get_addr (rtx);
4602 : extern bool read_dependence (const_rtx, const_rtx);
4603 : extern bool true_dependence (const_rtx, machine_mode, const_rtx);
4604 : extern bool canon_true_dependence (const_rtx, machine_mode, rtx,
4605 : const_rtx, rtx);
4606 : extern bool anti_dependence (const_rtx, const_rtx);
4607 : extern bool canon_anti_dependence (const_rtx, bool,
4608 : const_rtx, machine_mode, rtx);
4609 : extern bool output_dependence (const_rtx, const_rtx);
4610 : extern bool canon_output_dependence (const_rtx, bool,
4611 : const_rtx, machine_mode, rtx);
4612 : extern bool may_alias_p (const_rtx, const_rtx);
4613 : extern void init_alias_target (void);
4614 : extern void init_alias_analysis (void);
4615 : extern void end_alias_analysis (void);
4616 : extern void vt_equate_reg_base_value (const_rtx, const_rtx);
4617 : extern bool memory_modified_in_insn_p (const_rtx, const_rtx);
4618 : extern bool may_be_sp_based_p (rtx);
4619 : extern rtx gen_hard_reg_clobber (machine_mode, unsigned int);
4620 : extern rtx get_reg_known_value (unsigned int);
4621 : extern bool get_reg_known_equiv_p (unsigned int);
4622 : extern rtx get_reg_base_value (unsigned int);
4623 : extern rtx extract_mem_from_operand (rtx);
4624 :
4625 : #ifdef STACK_REGS
4626 : extern bool stack_regs_mentioned (const_rtx insn);
4627 : #endif
4628 :
4629 : /* In toplev.cc */
4630 : extern GTY(()) rtx stack_limit_rtx;
4631 :
4632 : /* In var-tracking.cc */
4633 : extern unsigned int variable_tracking_main (void);
4634 : extern void delete_vta_debug_insns (bool);
4635 :
4636 : /* In stor-layout.cc. */
4637 : extern void get_mode_bounds (scalar_int_mode, int,
4638 : scalar_int_mode, rtx *, rtx *);
4639 :
4640 : /* In loop-iv.cc */
4641 : extern rtx canon_condition (rtx);
4642 : extern void simplify_using_condition (rtx, rtx *, bitmap);
4643 :
4644 : /* In final.cc */
4645 : extern void compute_alignments (void);
4646 : extern void update_alignments (vec<rtx> &);
4647 : extern int asm_str_count (const char *templ);
4648 : extern rtx get_call_rtx_from (const rtx_insn *);
4649 :
4650 : struct rtl_hooks
4651 : {
4652 : rtx (*gen_lowpart) (machine_mode, rtx);
4653 : rtx (*gen_lowpart_no_emit) (machine_mode, rtx);
4654 : rtx (*reg_nonzero_bits) (const_rtx, scalar_int_mode, scalar_int_mode,
4655 : unsigned HOST_WIDE_INT *);
4656 : rtx (*reg_num_sign_bit_copies) (const_rtx, scalar_int_mode, scalar_int_mode,
4657 : unsigned int *);
4658 : bool (*reg_truncated_to_mode) (machine_mode, const_rtx);
4659 :
4660 : /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
4661 : };
4662 :
4663 : /* Each pass can provide its own. */
4664 : extern struct rtl_hooks rtl_hooks;
4665 :
4666 : /* ... but then it has to restore these. */
4667 : extern const struct rtl_hooks general_rtl_hooks;
4668 :
4669 : /* Keep this for the nonce. */
4670 : #define gen_lowpart rtl_hooks.gen_lowpart
4671 :
4672 : extern void insn_locations_init (void);
4673 : extern void insn_locations_finalize (void);
4674 : extern void set_curr_insn_location (location_t);
4675 : extern location_t curr_insn_location (void);
4676 : extern void set_insn_locations (rtx_insn *, location_t);
4677 :
4678 : /* rtl-error.cc */
4679 : extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *)
4680 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
4681 : extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *)
4682 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
4683 :
4684 : #define fatal_insn(msgid, insn) \
4685 : _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
4686 : #define fatal_insn_not_found(insn) \
4687 : _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
4688 :
4689 : /* reginfo.cc */
4690 : extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER];
4691 :
4692 : /* Information about the function that is propagated by the RTL backend.
4693 : Available only for functions that has been already assembled. */
4694 :
4695 : struct GTY(()) cgraph_rtl_info {
4696 : unsigned int preferred_incoming_stack_boundary;
4697 :
4698 : /* Which registers the function clobbers, either directly or by
4699 : calling another function. */
4700 : HARD_REG_SET function_used_regs;
4701 : };
4702 :
4703 : /* If loads from memories of mode MODE always sign or zero extend,
4704 : return SIGN_EXTEND or ZERO_EXTEND as appropriate. Return UNKNOWN
4705 : otherwise. */
4706 :
4707 : inline rtx_code
4708 36644 : load_extend_op (machine_mode mode)
4709 : {
4710 36644 : scalar_int_mode int_mode;
4711 36644 : if (is_a <scalar_int_mode> (mode, &int_mode)
4712 : && GET_MODE_PRECISION (int_mode) < BITS_PER_WORD)
4713 : return LOAD_EXTEND_OP (int_mode);
4714 : return UNKNOWN;
4715 : }
4716 :
4717 : /* If X is a PLUS of a base and a constant offset, add the constant to *OFFSET
4718 : and return the base. Return X otherwise. */
4719 :
4720 : inline rtx
4721 109022766 : strip_offset_and_add (rtx x, poly_int64 *offset)
4722 : {
4723 109022766 : if (GET_CODE (x) == PLUS)
4724 : {
4725 57571815 : poly_int64 suboffset;
4726 57571815 : x = strip_offset (x, &suboffset);
4727 115143630 : *offset = poly_uint64 (*offset) + suboffset;
4728 : }
4729 109022766 : return x;
4730 : }
4731 :
4732 : /* Return true if X is an operation that always operates on the full
4733 : registers for WORD_REGISTER_OPERATIONS architectures. */
4734 :
4735 : inline bool
4736 : word_register_operation_p (const_rtx x)
4737 : {
4738 : switch (GET_CODE (x))
4739 : {
4740 : case CONST_INT:
4741 : case ROTATE:
4742 : case ROTATERT:
4743 : case SIGN_EXTRACT:
4744 : case ZERO_EXTRACT:
4745 : return false;
4746 :
4747 : default:
4748 : return true;
4749 : }
4750 : }
4751 :
4752 : /* Holds an rtx comparison to simplify passing many parameters pertaining to a
4753 : single comparison. */
4754 :
4755 : struct rtx_comparison {
4756 : rtx_code code;
4757 : rtx op0, op1;
4758 : machine_mode mode;
4759 : };
4760 :
4761 : /* gtype-desc.cc. */
4762 : extern void gt_ggc_mx (rtx &);
4763 : extern void gt_pch_nx (rtx &);
4764 : extern void gt_pch_nx (rtx &, gt_pointer_operator, void *);
4765 :
4766 : #endif /* ! GCC_RTL_H */
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