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 : /* The unique identifier of a VALUE rtx. */
430 : int value_uid;
431 :
432 : /* Information about a CONST_VECTOR. */
433 : struct
434 : {
435 : /* The value of CONST_VECTOR_NPATTERNS. */
436 : unsigned int npatterns : 16;
437 :
438 : /* The value of CONST_VECTOR_NELTS_PER_PATTERN. */
439 : unsigned int nelts_per_pattern : 8;
440 :
441 : /* For future expansion. */
442 : unsigned int unused : 8;
443 : } const_vector;
444 : } GTY ((skip)) u2;
445 :
446 : /* The first element of the operands of this rtx.
447 : The number of operands and their types are controlled
448 : by the `code' field, according to rtl.def. */
449 : union u {
450 : rtunion fld[1];
451 : HOST_WIDE_INT hwint[1];
452 : struct reg_info reg;
453 : struct block_symbol block_sym;
454 : struct real_value rv;
455 : struct fixed_value fv;
456 : struct hwivec_def hwiv;
457 : struct const_poly_int_def cpi;
458 : } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
459 : };
460 :
461 : /* A node for constructing singly-linked lists of rtx. */
462 :
463 : struct GTY(()) rtx_expr_list : public rtx_def
464 : {
465 : private:
466 : /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */
467 :
468 : public:
469 : /* Get next in list. */
470 : rtx_expr_list *next () const;
471 :
472 : /* Get at the underlying rtx. */
473 : rtx element () const;
474 : };
475 :
476 : template <>
477 : template <>
478 : inline bool
479 935759283 : is_a_helper <rtx_expr_list *>::test (rtx rt)
480 : {
481 935759283 : return rt->code == EXPR_LIST;
482 : }
483 :
484 : struct GTY(()) rtx_insn_list : public rtx_def
485 : {
486 : private:
487 : /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST).
488 :
489 : This is an instance of:
490 :
491 : DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA)
492 :
493 : i.e. a node for constructing singly-linked lists of rtx_insn *, where
494 : the list is "external" to the insn (as opposed to the doubly-linked
495 : list embedded within rtx_insn itself). */
496 :
497 : public:
498 : /* Get next in list. */
499 : rtx_insn_list *next () const;
500 :
501 : /* Get at the underlying instruction. */
502 : rtx_insn *insn () const;
503 :
504 : };
505 :
506 : template <>
507 : template <>
508 : inline bool
509 2271493124 : is_a_helper <rtx_insn_list *>::test (rtx rt)
510 : {
511 2271493124 : return rt->code == INSN_LIST;
512 : }
513 :
514 : /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx,
515 : typically (but not always) of rtx_insn *, used in the late passes. */
516 :
517 : struct GTY(()) rtx_sequence : public rtx_def
518 : {
519 : private:
520 : /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */
521 :
522 : public:
523 : /* Get number of elements in sequence. */
524 : int len () const;
525 :
526 : /* Get i-th element of the sequence. */
527 : rtx element (int index) const;
528 :
529 : /* Get i-th element of the sequence, with a checked cast to
530 : rtx_insn *. */
531 : rtx_insn *insn (int index) const;
532 : };
533 :
534 : template <>
535 : template <>
536 : inline bool
537 827528386 : is_a_helper <rtx_sequence *>::test (rtx rt)
538 : {
539 827528386 : return rt->code == SEQUENCE;
540 : }
541 :
542 : template <>
543 : template <>
544 : inline bool
545 0 : is_a_helper <const rtx_sequence *>::test (const_rtx rt)
546 : {
547 0 : return rt->code == SEQUENCE;
548 : }
549 :
550 : struct GTY(()) rtx_insn : public rtx_def
551 : {
552 : public:
553 : /* No extra fields, but adds the invariant:
554 :
555 : (INSN_P (X)
556 : || NOTE_P (X)
557 : || JUMP_TABLE_DATA_P (X)
558 : || BARRIER_P (X)
559 : || LABEL_P (X))
560 :
561 : i.e. that we must be able to use the following:
562 : INSN_UID ()
563 : NEXT_INSN ()
564 : PREV_INSN ()
565 : i.e. we have an rtx that has an INSN_UID field and can be part of
566 : a linked list of insns.
567 : */
568 :
569 : /* Returns true if this insn has been deleted. */
570 :
571 2307778188 : bool deleted () const { return volatil; }
572 :
573 : /* Mark this insn as deleted. */
574 :
575 131950417 : void set_deleted () { volatil = true; }
576 :
577 : /* Mark this insn as not deleted. */
578 :
579 8901 : void set_undeleted () { volatil = false; }
580 : };
581 :
582 : /* Subclasses of rtx_insn. */
583 :
584 : struct GTY(()) rtx_debug_insn : public rtx_insn
585 : {
586 : /* No extra fields, but adds the invariant:
587 : DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN)
588 : i.e. an annotation for tracking variable assignments.
589 :
590 : This is an instance of:
591 : DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeLie", RTX_INSN)
592 : from rtl.def. */
593 : };
594 :
595 : struct GTY(()) rtx_nonjump_insn : public rtx_insn
596 : {
597 : /* No extra fields, but adds the invariant:
598 : NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN)
599 : i.e an instruction that cannot jump.
600 :
601 : This is an instance of:
602 : DEF_RTL_EXPR(INSN, "insn", "uuBeLie", RTX_INSN)
603 : from rtl.def. */
604 : };
605 :
606 : struct GTY(()) rtx_jump_insn : public rtx_insn
607 : {
608 : public:
609 : /* No extra fields, but adds the invariant:
610 : JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN)
611 : i.e. an instruction that can possibly jump.
612 :
613 : This is an instance of:
614 : DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeLie0", RTX_INSN)
615 : from rtl.def. */
616 :
617 : /* Returns jump target of this instruction. The returned value is not
618 : necessarily a code label: it may also be a RETURN or SIMPLE_RETURN
619 : expression. Also, when the code label is marked "deleted", it is
620 : replaced by a NOTE. In some cases the value is NULL_RTX. */
621 :
622 : inline rtx jump_label () const;
623 :
624 : /* Returns jump target cast to rtx_code_label *. */
625 :
626 : inline rtx_code_label *jump_target () const;
627 :
628 : /* Set jump target. */
629 :
630 : inline void set_jump_target (rtx_code_label *);
631 : };
632 :
633 : struct GTY(()) rtx_call_insn : public rtx_insn
634 : {
635 : /* No extra fields, but adds the invariant:
636 : CALL_P (X) aka (GET_CODE (X) == CALL_INSN)
637 : i.e. an instruction that can possibly call a subroutine
638 : but which will not change which instruction comes next
639 : in the current function.
640 :
641 : This is an instance of:
642 : DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeLiee", RTX_INSN)
643 : from rtl.def. */
644 : };
645 :
646 : struct GTY(()) rtx_jump_table_data : public rtx_insn
647 : {
648 : /* No extra fields, but adds the invariant:
649 : JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA)
650 : i.e. a data for a jump table, considered an instruction for
651 : historical reasons.
652 :
653 : This is an instance of:
654 : DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN)
655 : from rtl.def. */
656 :
657 : /* This can be either:
658 :
659 : (a) a table of absolute jumps, in which case PATTERN (this) is an
660 : ADDR_VEC with arg 0 a vector of labels, or
661 :
662 : (b) a table of relative jumps (e.g. for -fPIC), in which case
663 : PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and
664 : arg 1 the vector of labels.
665 :
666 : This method gets the underlying vec. */
667 :
668 : inline rtvec get_labels () const;
669 : inline scalar_int_mode get_data_mode () const;
670 : };
671 :
672 : struct GTY(()) rtx_barrier : public rtx_insn
673 : {
674 : /* No extra fields, but adds the invariant:
675 : BARRIER_P (X) aka (GET_CODE (X) == BARRIER)
676 : i.e. a marker that indicates that control will not flow through.
677 :
678 : This is an instance of:
679 : DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA)
680 : from rtl.def. */
681 : };
682 :
683 : struct GTY(()) rtx_code_label : public rtx_insn
684 : {
685 : /* No extra fields, but adds the invariant:
686 : LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL)
687 : i.e. a label in the assembler.
688 :
689 : This is an instance of:
690 : DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA)
691 : from rtl.def. */
692 : };
693 :
694 : struct GTY(()) rtx_note : public rtx_insn
695 : {
696 : /* No extra fields, but adds the invariant:
697 : NOTE_P(X) aka (GET_CODE (X) == NOTE)
698 : i.e. a note about the corresponding source code.
699 :
700 : This is an instance of:
701 : DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA)
702 : from rtl.def. */
703 : };
704 :
705 : /* The size in bytes of an rtx header (code, mode and flags). */
706 : #define RTX_HDR_SIZE offsetof (struct rtx_def, u)
707 :
708 : /* The size in bytes of an rtx with code CODE. */
709 : #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE]
710 :
711 : #define NULL_RTX (rtx) 0
712 :
713 : /* The "next" and "previous" RTX, relative to this one. */
714 :
715 : #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
716 : : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
717 :
718 : /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
719 : */
720 : #define RTX_PREV(X) ((INSN_P (X) \
721 : || NOTE_P (X) \
722 : || JUMP_TABLE_DATA_P (X) \
723 : || BARRIER_P (X) \
724 : || LABEL_P (X)) \
725 : && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \
726 : && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \
727 : ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL)
728 :
729 : /* Define macros to access the `code' field of the rtx. */
730 :
731 : #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
732 : #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
733 :
734 : #define GET_MODE(RTX) ((machine_mode) (RTX)->mode)
735 : #define PUT_MODE_RAW(RTX, MODE) ((RTX)->mode = (MODE))
736 :
737 : /* RTL vector. These appear inside RTX's when there is a need
738 : for a variable number of things. The principle use is inside
739 : PARALLEL expressions. */
740 :
741 : struct GTY(()) rtvec_def {
742 : int num_elem; /* number of elements */
743 : rtx GTY ((length ("%h.num_elem"))) elem[1];
744 : };
745 :
746 : #define NULL_RTVEC (rtvec) 0
747 :
748 : #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
749 : #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
750 :
751 : /* Predicate yielding nonzero iff X is an rtx for a register. */
752 : #define REG_P(X) (GET_CODE (X) == REG)
753 :
754 : /* Predicate yielding nonzero iff X is an rtx for a memory location. */
755 : #define MEM_P(X) (GET_CODE (X) == MEM)
756 :
757 : #if TARGET_SUPPORTS_WIDE_INT
758 :
759 : /* Match CONST_*s that can represent compile-time constant integers. */
760 : #define CASE_CONST_SCALAR_INT \
761 : case CONST_INT: \
762 : case CONST_WIDE_INT
763 :
764 : /* Match CONST_*s for which pointer equality corresponds to value
765 : equality. */
766 : #define CASE_CONST_UNIQUE \
767 : case CONST_INT: \
768 : case CONST_WIDE_INT: \
769 : case CONST_POLY_INT: \
770 : case CONST_DOUBLE: \
771 : case CONST_FIXED
772 :
773 : /* Match all CONST_* rtxes. */
774 : #define CASE_CONST_ANY \
775 : case CONST_INT: \
776 : case CONST_WIDE_INT: \
777 : case CONST_POLY_INT: \
778 : case CONST_DOUBLE: \
779 : case CONST_FIXED: \
780 : case CONST_VECTOR
781 :
782 : #else
783 :
784 : /* Match CONST_*s that can represent compile-time constant integers. */
785 : #define CASE_CONST_SCALAR_INT \
786 : case CONST_INT: \
787 : case CONST_DOUBLE
788 :
789 : /* Match CONST_*s for which pointer equality corresponds to value
790 : equality. */
791 : #define CASE_CONST_UNIQUE \
792 : case CONST_INT: \
793 : case CONST_DOUBLE: \
794 : case CONST_FIXED
795 :
796 : /* Match all CONST_* rtxes. */
797 : #define CASE_CONST_ANY \
798 : case CONST_INT: \
799 : case CONST_DOUBLE: \
800 : case CONST_FIXED: \
801 : case CONST_VECTOR
802 : #endif
803 :
804 : /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
805 : #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT)
806 :
807 : /* Predicate yielding nonzero iff X is an rtx for a constant integer. */
808 : #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT)
809 :
810 : /* Predicate yielding nonzero iff X is an rtx for a polynomial constant
811 : integer. */
812 : #define CONST_POLY_INT_P(X) \
813 : (NUM_POLY_INT_COEFFS > 1 && GET_CODE (X) == CONST_POLY_INT)
814 :
815 : /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */
816 : #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED)
817 :
818 : /* Predicate yielding true iff X is an rtx for a double-int
819 : or floating point constant. */
820 : #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE)
821 :
822 : /* Predicate yielding true iff X is an rtx for a double-int. */
823 : #define CONST_DOUBLE_AS_INT_P(X) \
824 : (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode)
825 :
826 : /* Predicate yielding true iff X is an rtx for a integer const. */
827 : #if TARGET_SUPPORTS_WIDE_INT
828 : #define CONST_SCALAR_INT_P(X) \
829 : (CONST_INT_P (X) || CONST_WIDE_INT_P (X))
830 : #else
831 : #define CONST_SCALAR_INT_P(X) \
832 : (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X))
833 : #endif
834 :
835 : /* Predicate yielding true iff X is an rtx for a double-int. */
836 : #define CONST_DOUBLE_AS_FLOAT_P(X) \
837 : (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode)
838 :
839 : /* Predicate yielding nonzero iff X is an rtx for a constant vector. */
840 : #define CONST_VECTOR_P(X) (GET_CODE (X) == CONST_VECTOR)
841 :
842 : /* Predicate yielding nonzero iff X is a label insn. */
843 : #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
844 :
845 : /* Predicate yielding nonzero iff X is a jump insn. */
846 : #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
847 :
848 : /* Predicate yielding nonzero iff X is a call insn. */
849 : #define CALL_P(X) (GET_CODE (X) == CALL_INSN)
850 :
851 : /* 1 if RTX is a call_insn for a fake call.
852 : CALL_INSN use "used" flag to indicate it's a fake call. */
853 : #define FAKE_CALL_P(RTX) \
854 : (RTL_FLAG_CHECK1 ("FAKE_CALL_P", (RTX), CALL_INSN)->used)
855 :
856 : /* Predicate yielding nonzero iff X is an insn that cannot jump. */
857 : #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN)
858 :
859 : /* Predicate yielding nonzero iff X is a debug note/insn. */
860 : #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN)
861 :
862 : /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */
863 : #define NONDEBUG_INSN_P(X) (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X))
864 :
865 : /* Nonzero if DEBUG_MARKER_INSN_P may possibly hold. */
866 : #define MAY_HAVE_DEBUG_MARKER_INSNS debug_nonbind_markers_p
867 : /* Nonzero if DEBUG_BIND_INSN_P may possibly hold. */
868 : #define MAY_HAVE_DEBUG_BIND_INSNS flag_var_tracking_assignments
869 : /* Nonzero if DEBUG_INSN_P may possibly hold. */
870 : #define MAY_HAVE_DEBUG_INSNS \
871 : (MAY_HAVE_DEBUG_MARKER_INSNS || MAY_HAVE_DEBUG_BIND_INSNS)
872 :
873 : /* Predicate yielding nonzero iff X is a real insn. */
874 : #define INSN_P(X) (NONDEBUG_INSN_P (X) || DEBUG_INSN_P (X))
875 :
876 : /* Predicate yielding nonzero iff X is a note insn. */
877 : #define NOTE_P(X) (GET_CODE (X) == NOTE)
878 :
879 : /* Predicate yielding nonzero iff X is a barrier insn. */
880 : #define BARRIER_P(X) (GET_CODE (X) == BARRIER)
881 :
882 : /* Predicate yielding nonzero iff X is a data for a jump table. */
883 : #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA)
884 :
885 : /* Predicate yielding nonzero iff RTX is a subreg. */
886 : #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG)
887 :
888 : /* Predicate yielding true iff RTX is a symbol ref. */
889 : #define SYMBOL_REF_P(RTX) (GET_CODE (RTX) == SYMBOL_REF)
890 :
891 : template <>
892 : template <>
893 : inline bool
894 >18332*10^7 : is_a_helper <rtx_insn *>::test (rtx rt)
895 : {
896 >18332*10^7 : return (INSN_P (rt)
897 >18332*10^7 : || NOTE_P (rt)
898 22907777130 : || JUMP_TABLE_DATA_P (rt)
899 22905075752 : || BARRIER_P (rt)
900 >19762*10^7 : || LABEL_P (rt));
901 : }
902 :
903 : template <>
904 : template <>
905 : inline bool
906 110223309 : is_a_helper <const rtx_insn *>::test (const_rtx rt)
907 : {
908 110223309 : return (INSN_P (rt)
909 110223309 : || NOTE_P (rt)
910 286 : || JUMP_TABLE_DATA_P (rt)
911 286 : || BARRIER_P (rt)
912 110223587 : || LABEL_P (rt));
913 : }
914 :
915 : template <>
916 : template <>
917 : inline bool
918 53572362 : is_a_helper <rtx_debug_insn *>::test (rtx rt)
919 : {
920 53572362 : return DEBUG_INSN_P (rt);
921 : }
922 :
923 : template <>
924 : template <>
925 : inline bool
926 : is_a_helper <rtx_nonjump_insn *>::test (rtx rt)
927 : {
928 : return NONJUMP_INSN_P (rt);
929 : }
930 :
931 : template <>
932 : template <>
933 : inline bool
934 18329077 : is_a_helper <rtx_jump_insn *>::test (rtx rt)
935 : {
936 18329077 : return JUMP_P (rt);
937 : }
938 :
939 : template <>
940 : template <>
941 : inline bool
942 50196579 : is_a_helper <rtx_jump_insn *>::test (rtx_insn *insn)
943 : {
944 50196579 : return JUMP_P (insn);
945 : }
946 :
947 : template <>
948 : template <>
949 : inline bool
950 6416437 : is_a_helper <rtx_call_insn *>::test (rtx rt)
951 : {
952 6416437 : return CALL_P (rt);
953 : }
954 :
955 : template <>
956 : template <>
957 : inline bool
958 880368196 : is_a_helper <rtx_call_insn *>::test (rtx_insn *insn)
959 : {
960 880368196 : return CALL_P (insn);
961 : }
962 :
963 : template <>
964 : template <>
965 : inline bool
966 32807635 : is_a_helper <const rtx_call_insn *>::test (const rtx_insn *insn)
967 : {
968 32807635 : return CALL_P (insn);
969 : }
970 :
971 : template <>
972 : template <>
973 : inline bool
974 6594 : is_a_helper <rtx_jump_table_data *>::test (rtx rt)
975 : {
976 6594 : return JUMP_TABLE_DATA_P (rt);
977 : }
978 :
979 : template <>
980 : template <>
981 : inline bool
982 146053714 : is_a_helper <rtx_jump_table_data *>::test (rtx_insn *insn)
983 : {
984 146053714 : return JUMP_TABLE_DATA_P (insn);
985 : }
986 :
987 : template <>
988 : template <>
989 : inline bool
990 11341397 : is_a_helper <rtx_barrier *>::test (rtx rt)
991 : {
992 11341397 : return BARRIER_P (rt);
993 : }
994 :
995 : template <>
996 : template <>
997 : inline bool
998 24368256 : is_a_helper <rtx_code_label *>::test (rtx rt)
999 : {
1000 24368256 : return LABEL_P (rt);
1001 : }
1002 :
1003 : template <>
1004 : template <>
1005 : inline bool
1006 413995636 : is_a_helper <rtx_code_label *>::test (rtx_insn *insn)
1007 : {
1008 413995636 : return LABEL_P (insn);
1009 : }
1010 :
1011 : template <>
1012 : template <>
1013 : inline bool
1014 172745738 : is_a_helper <rtx_note *>::test (rtx rt)
1015 : {
1016 172745738 : return NOTE_P (rt);
1017 : }
1018 :
1019 : template <>
1020 : template <>
1021 : inline bool
1022 86362619 : is_a_helper <rtx_note *>::test (rtx_insn *insn)
1023 : {
1024 86362619 : return NOTE_P (insn);
1025 : }
1026 :
1027 : /* Predicate yielding nonzero iff X is a return or simple_return. */
1028 : #define ANY_RETURN_P(X) \
1029 : (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN)
1030 :
1031 : /* 1 if X is a unary operator. */
1032 :
1033 : #define UNARY_P(X) \
1034 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY)
1035 :
1036 : /* 1 if X is a binary operator. */
1037 :
1038 : #define BINARY_P(X) \
1039 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT)
1040 :
1041 : /* 1 if X is an arithmetic operator. */
1042 :
1043 : #define ARITHMETIC_P(X) \
1044 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \
1045 : == RTX_ARITHMETIC_RESULT)
1046 :
1047 : /* 1 if X is an arithmetic operator. */
1048 :
1049 : #define COMMUTATIVE_ARITH_P(X) \
1050 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH)
1051 :
1052 : /* 1 if X is a commutative arithmetic operator or a comparison operator.
1053 : These two are sometimes selected together because it is possible to
1054 : swap the two operands. */
1055 :
1056 : #define SWAPPABLE_OPERANDS_P(X) \
1057 : ((1 << GET_RTX_CLASS (GET_CODE (X))) \
1058 : & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \
1059 : | (1 << RTX_COMPARE)))
1060 :
1061 : /* 1 if X is a non-commutative operator. */
1062 :
1063 : #define NON_COMMUTATIVE_P(X) \
1064 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1065 : == RTX_NON_COMMUTATIVE_RESULT)
1066 :
1067 : /* 1 if X is a commutative operator on integers. */
1068 :
1069 : #define COMMUTATIVE_P(X) \
1070 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \
1071 : == RTX_COMMUTATIVE_RESULT)
1072 :
1073 : /* 1 if X is a relational operator. */
1074 :
1075 : #define COMPARISON_P(X) \
1076 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT)
1077 :
1078 : /* 1 if X is a constant value that is an integer. */
1079 :
1080 : #define CONSTANT_P(X) \
1081 : (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ)
1082 :
1083 : /* 1 if X is a LABEL_REF. */
1084 : #define LABEL_REF_P(X) \
1085 : (GET_CODE (X) == LABEL_REF)
1086 :
1087 : /* 1 if X can be used to represent an object. */
1088 : #define OBJECT_P(X) \
1089 : ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT)
1090 :
1091 : /* General accessor macros for accessing the fields of an rtx. */
1092 :
1093 : #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
1094 : /* The bit with a star outside the statement expr and an & inside is
1095 : so that N can be evaluated only once. */
1096 : #define RTL_CHECK1(RTX, N, C1) __extension__ \
1097 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1098 : const enum rtx_code _code = GET_CODE (_rtx); \
1099 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1100 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1101 : __FUNCTION__); \
1102 : if (GET_RTX_FORMAT (_code)[_n] != C1) \
1103 : rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
1104 : __FUNCTION__); \
1105 : &_rtx->u.fld[_n]; }))
1106 :
1107 : #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
1108 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1109 : const enum rtx_code _code = GET_CODE (_rtx); \
1110 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1111 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1112 : __FUNCTION__); \
1113 : if (GET_RTX_FORMAT (_code)[_n] != C1 \
1114 : && GET_RTX_FORMAT (_code)[_n] != C2) \
1115 : rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
1116 : __FUNCTION__); \
1117 : &_rtx->u.fld[_n]; }))
1118 :
1119 : #define RTL_CHECKC1(RTX, N, C) __extension__ \
1120 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1121 : if (GET_CODE (_rtx) != (C)) \
1122 : rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1123 : __FUNCTION__); \
1124 : &_rtx->u.fld[_n]; }))
1125 :
1126 : #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
1127 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1128 : const enum rtx_code _code = GET_CODE (_rtx); \
1129 : if (_code != (C1) && _code != (C2)) \
1130 : rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
1131 : __FUNCTION__); \
1132 : &_rtx->u.fld[_n]; }))
1133 :
1134 : #define RTL_CHECKC3(RTX, N, C1, C2, C3) __extension__ \
1135 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1136 : const enum rtx_code _code = GET_CODE (_rtx); \
1137 : if (_code != (C1) && _code != (C2) && _code != (C3)) \
1138 : rtl_check_failed_code3 (_rtx, (C1), (C2), (C3), __FILE__, \
1139 : __LINE__, __FUNCTION__); \
1140 : &_rtx->u.fld[_n]; }))
1141 :
1142 : #define RTVEC_ELT(RTVEC, I) __extension__ \
1143 : (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \
1144 : if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
1145 : rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
1146 : __FUNCTION__); \
1147 : &_rtvec->elem[_i]; }))
1148 :
1149 : #define XWINT(RTX, N) __extension__ \
1150 : (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \
1151 : const enum rtx_code _code = GET_CODE (_rtx); \
1152 : if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
1153 : rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
1154 : __FUNCTION__); \
1155 : if (GET_RTX_FORMAT (_code)[_n] != 'w') \
1156 : rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
1157 : __FUNCTION__); \
1158 : &_rtx->u.hwint[_n]; }))
1159 :
1160 : #define CWI_ELT(RTX, I) __extension__ \
1161 : (*({ __typeof (RTX) const _cwi = (RTX); \
1162 : int _max = CWI_GET_NUM_ELEM (_cwi); \
1163 : const int _i = (I); \
1164 : if (_i < 0 || _i >= _max) \
1165 : cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \
1166 : __FUNCTION__); \
1167 : &_cwi->u.hwiv.elem[_i]; }))
1168 :
1169 : #define XCWINT(RTX, N, C) __extension__ \
1170 : (*({ __typeof (RTX) const _rtx = (RTX); \
1171 : if (GET_CODE (_rtx) != (C)) \
1172 : rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
1173 : __FUNCTION__); \
1174 : &_rtx->u.hwint[N]; }))
1175 :
1176 : #define XCMWINT(RTX, N, C, M) __extension__ \
1177 : (*({ __typeof (RTX) const _rtx = (RTX); \
1178 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \
1179 : rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \
1180 : __LINE__, __FUNCTION__); \
1181 : &_rtx->u.hwint[N]; }))
1182 :
1183 : #define XCNMPRV(RTX, C, M) __extension__ \
1184 : ({ __typeof (RTX) const _rtx = (RTX); \
1185 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1186 : rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1187 : __LINE__, __FUNCTION__); \
1188 : &_rtx->u.rv; })
1189 :
1190 : #define XCNMPFV(RTX, C, M) __extension__ \
1191 : ({ __typeof (RTX) const _rtx = (RTX); \
1192 : if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \
1193 : rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \
1194 : __LINE__, __FUNCTION__); \
1195 : &_rtx->u.fv; })
1196 :
1197 : #define REG_CHECK(RTX) __extension__ \
1198 : ({ __typeof (RTX) const _rtx = (RTX); \
1199 : if (GET_CODE (_rtx) != REG) \
1200 : rtl_check_failed_code1 (_rtx, REG, __FILE__, __LINE__, \
1201 : __FUNCTION__); \
1202 : &_rtx->u.reg; })
1203 :
1204 : #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \
1205 : ({ __typeof (RTX) const _symbol = (RTX); \
1206 : const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \
1207 : if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \
1208 : rtl_check_failed_block_symbol (__FILE__, __LINE__, \
1209 : __FUNCTION__); \
1210 : &_symbol->u.block_sym; })
1211 :
1212 : #define HWIVEC_CHECK(RTX,C) __extension__ \
1213 : ({ __typeof (RTX) const _symbol = (RTX); \
1214 : RTL_CHECKC1 (_symbol, 0, C); \
1215 : &_symbol->u.hwiv; })
1216 :
1217 : extern void rtl_check_failed_bounds (const_rtx, int, const char *, int,
1218 : const char *)
1219 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1220 : extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int,
1221 : const char *)
1222 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1223 : extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *,
1224 : int, const char *)
1225 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1226 : extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *,
1227 : int, const char *)
1228 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1229 : extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code,
1230 : const char *, int, const char *)
1231 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1232 : extern void rtl_check_failed_code3 (const_rtx, enum rtx_code, enum rtx_code,
1233 : enum rtx_code, const char *, int,
1234 : const char *)
1235 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1236 : extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, machine_mode,
1237 : bool, const char *, int, const char *)
1238 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1239 : extern void rtl_check_failed_block_symbol (const char *, int, const char *)
1240 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1241 : extern void cwi_check_failed_bounds (const_rtx, int, const char *, int,
1242 : const char *)
1243 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1244 : extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int,
1245 : const char *)
1246 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
1247 :
1248 : #else /* not ENABLE_RTL_CHECKING */
1249 :
1250 : #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
1251 : #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1252 : #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
1253 : #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
1254 : #define RTL_CHECKC3(RTX, N, C1, C2, C3) ((RTX)->u.fld[N])
1255 : #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
1256 : #define XWINT(RTX, N) ((RTX)->u.hwint[N])
1257 : #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I])
1258 : #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
1259 : #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1260 : #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N])
1261 : #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv)
1262 : #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv)
1263 : #define REG_CHECK(RTX) (&(RTX)->u.reg)
1264 : #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym)
1265 : #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv)
1266 :
1267 : #endif
1268 :
1269 : /* General accessor macros for accessing the flags of an rtx. */
1270 :
1271 : /* Access an individual rtx flag, with no checking of any kind. */
1272 : #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
1273 :
1274 : #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
1275 : #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
1276 : ({ __typeof (RTX) const _rtx = (RTX); \
1277 : if (GET_CODE (_rtx) != C1) \
1278 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1279 : __FUNCTION__); \
1280 : _rtx; })
1281 :
1282 : #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
1283 : ({ __typeof (RTX) const _rtx = (RTX); \
1284 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \
1285 : rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1286 : __FUNCTION__); \
1287 : _rtx; })
1288 :
1289 : #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
1290 : ({ __typeof (RTX) const _rtx = (RTX); \
1291 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1292 : && GET_CODE (_rtx) != C3) \
1293 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1294 : __FUNCTION__); \
1295 : _rtx; })
1296 :
1297 : #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
1298 : ({ __typeof (RTX) const _rtx = (RTX); \
1299 : if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \
1300 : && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \
1301 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1302 : __FUNCTION__); \
1303 : _rtx; })
1304 :
1305 : #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
1306 : ({ __typeof (RTX) const _rtx = (RTX); \
1307 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1308 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1309 : && GET_CODE (_rtx) != C5) \
1310 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1311 : __FUNCTION__); \
1312 : _rtx; })
1313 :
1314 : #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
1315 : __extension__ \
1316 : ({ __typeof (RTX) const _rtx = (RTX); \
1317 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1318 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1319 : && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \
1320 : rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
1321 : __FUNCTION__); \
1322 : _rtx; })
1323 :
1324 : #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
1325 : __extension__ \
1326 : ({ __typeof (RTX) const _rtx = (RTX); \
1327 : if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \
1328 : && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \
1329 : && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \
1330 : && GET_CODE (_rtx) != C7) \
1331 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1332 : __FUNCTION__); \
1333 : _rtx; })
1334 :
1335 : #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \
1336 : __extension__ \
1337 : ({ __typeof (RTX) const _rtx = (RTX); \
1338 : if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \
1339 : rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
1340 : __FUNCTION__); \
1341 : _rtx; })
1342 :
1343 : extern void rtl_check_failed_flag (const char *, const_rtx, const char *,
1344 : int, const char *)
1345 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD
1346 : ;
1347 :
1348 : #else /* not ENABLE_RTL_FLAG_CHECKING */
1349 :
1350 : #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
1351 : #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
1352 : #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
1353 : #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
1354 : #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
1355 : #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
1356 : #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
1357 : #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX)
1358 : #endif
1359 :
1360 : #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int)
1361 : #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint)
1362 : #define XLOC(RTX, N) (RTL_CHECK1 (RTX, N, 'L').rt_loc)
1363 : #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str)
1364 : #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
1365 : #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec)
1366 : #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type)
1367 : #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree)
1368 : #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb)
1369 : #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str)
1370 : #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi)
1371 :
1372 : #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
1373 : #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
1374 :
1375 : /* These are like XINT, etc. except that they expect a '0' field instead
1376 : of the normal type code. */
1377 :
1378 : #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int)
1379 : #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint)
1380 : #define X0LOC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_loc)
1381 : #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str)
1382 : #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx)
1383 : #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec)
1384 : #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type)
1385 : #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree)
1386 : #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb)
1387 : #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
1388 : #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
1389 : #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem)
1390 : #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant)
1391 :
1392 : /* Access a '0' field with any type. */
1393 : #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
1394 :
1395 : #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int)
1396 : #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint)
1397 : #define XCLOC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_loc)
1398 : #define XCSUBREG(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_subreg)
1399 : #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str)
1400 : #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx)
1401 : #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec)
1402 : #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type)
1403 : #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree)
1404 : #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb)
1405 : #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi)
1406 : #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
1407 :
1408 : #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
1409 : #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
1410 :
1411 : #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx)
1412 : #define XC3EXP(RTX, N, C1, C2, C3) (RTL_CHECKC3 (RTX, N, C1, C2, C3).rt_rtx)
1413 :
1414 :
1415 : /* Methods of rtx_expr_list. */
1416 :
1417 137768951 : inline rtx_expr_list *rtx_expr_list::next () const
1418 : {
1419 137768951 : rtx tmp = XEXP (this, 1);
1420 137768951 : return safe_as_a <rtx_expr_list *> (tmp);
1421 : }
1422 :
1423 152828794 : inline rtx rtx_expr_list::element () const
1424 : {
1425 152828794 : return XEXP (this, 0);
1426 : }
1427 :
1428 : /* Methods of rtx_insn_list. */
1429 :
1430 1680446994 : inline rtx_insn_list *rtx_insn_list::next () const
1431 : {
1432 1680446994 : rtx tmp = XEXP (this, 1);
1433 1680446994 : return safe_as_a <rtx_insn_list *> (tmp);
1434 : }
1435 :
1436 1089517850 : inline rtx_insn *rtx_insn_list::insn () const
1437 : {
1438 1089517850 : rtx tmp = XEXP (this, 0);
1439 1089517850 : return safe_as_a <rtx_insn *> (tmp);
1440 : }
1441 :
1442 : /* Methods of rtx_sequence. */
1443 :
1444 0 : inline int rtx_sequence::len () const
1445 : {
1446 0 : return XVECLEN (this, 0);
1447 : }
1448 :
1449 0 : inline rtx rtx_sequence::element (int index) const
1450 : {
1451 0 : return XVECEXP (this, 0, index);
1452 : }
1453 :
1454 0 : inline rtx_insn *rtx_sequence::insn (int index) const
1455 : {
1456 0 : return as_a <rtx_insn *> (XVECEXP (this, 0, index));
1457 : }
1458 :
1459 : /* ACCESS MACROS for particular fields of insns. */
1460 :
1461 : /* Holds a unique number for each insn.
1462 : These are not necessarily sequentially increasing. */
1463 7658129235 : inline int INSN_UID (const_rtx insn)
1464 : {
1465 7658129235 : return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1466 7658129235 : (insn))->u2.insn_uid;
1467 : }
1468 59592667032 : inline int& INSN_UID (rtx insn)
1469 : {
1470 59592667032 : return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID",
1471 59592667032 : (insn))->u2.insn_uid;
1472 : }
1473 :
1474 : /* Chain insns together in sequence. */
1475 :
1476 : /* For now these are split in two: an rvalue form:
1477 : PREV_INSN/NEXT_INSN
1478 : and an lvalue form:
1479 : SET_NEXT_INSN/SET_PREV_INSN. */
1480 :
1481 45738120001 : inline rtx_insn *PREV_INSN (const rtx_insn *insn)
1482 : {
1483 45738120001 : rtx prev = XEXP (insn, 0);
1484 45705452452 : return safe_as_a <rtx_insn *> (prev);
1485 : }
1486 :
1487 : inline rtx& SET_PREV_INSN (rtx_insn *insn)
1488 : {
1489 : return XEXP (insn, 0);
1490 : }
1491 :
1492 >13862*10^7 : inline rtx_insn *NEXT_INSN (const rtx_insn *insn)
1493 : {
1494 >13892*10^7 : rtx next = XEXP (insn, 1);
1495 >13822*10^7 : return safe_as_a <rtx_insn *> (next);
1496 : }
1497 :
1498 : inline rtx& SET_NEXT_INSN (rtx_insn *insn)
1499 : {
1500 : return XEXP (insn, 1);
1501 : }
1502 :
1503 945574 : inline basic_block BLOCK_FOR_INSN (const_rtx insn)
1504 : {
1505 945574 : return XBBDEF (insn, 2);
1506 : }
1507 :
1508 : inline basic_block& BLOCK_FOR_INSN (rtx insn)
1509 : {
1510 : return XBBDEF (insn, 2);
1511 : }
1512 :
1513 452101332 : inline void set_block_for_insn (rtx_insn *insn, basic_block bb)
1514 : {
1515 452101201 : BLOCK_FOR_INSN (insn) = bb;
1516 120311 : }
1517 :
1518 : /* The body of an insn. */
1519 29859112297 : inline rtx PATTERN (const_rtx insn)
1520 : {
1521 29321167298 : return XEXP (insn, 3);
1522 : }
1523 :
1524 2831266171 : inline rtx& PATTERN (rtx insn)
1525 : {
1526 2831266171 : return XEXP (insn, 3);
1527 : }
1528 :
1529 317086955 : inline location_t INSN_LOCATION (const rtx_insn *insn)
1530 : {
1531 223202288 : return XLOC (insn, 4);
1532 : }
1533 :
1534 : inline location_t& INSN_LOCATION (rtx_insn *insn)
1535 : {
1536 : return XLOC (insn, 4);
1537 : }
1538 :
1539 96636845 : inline bool INSN_HAS_LOCATION (const rtx_insn *insn)
1540 : {
1541 96636845 : return LOCATION_LOCUS (INSN_LOCATION (insn)) != UNKNOWN_LOCATION;
1542 : }
1543 :
1544 : /* LOCATION of an RTX if relevant. */
1545 : #define RTL_LOCATION(X) (INSN_P (X) ? \
1546 : INSN_LOCATION (as_a <rtx_insn *> (X)) \
1547 : : UNKNOWN_LOCATION)
1548 :
1549 : /* Code number of instruction, from when it was recognized.
1550 : -1 means this instruction has not been recognized yet. */
1551 : #define INSN_CODE(INSN) XINT (INSN, 5)
1552 :
1553 34421 : inline rtvec rtx_jump_table_data::get_labels () const
1554 : {
1555 34421 : rtx pat = PATTERN (this);
1556 34421 : if (GET_CODE (pat) == ADDR_VEC)
1557 28556 : return XVEC (pat, 0);
1558 : else
1559 5865 : return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */
1560 : }
1561 :
1562 : /* Return the mode of the data in the table, which is always a scalar
1563 : integer. */
1564 :
1565 : inline scalar_int_mode
1566 6467 : rtx_jump_table_data::get_data_mode () const
1567 : {
1568 6467 : return as_a <scalar_int_mode> (GET_MODE (PATTERN (this)));
1569 : }
1570 :
1571 : /* If LABEL is followed by a jump table, return the table, otherwise
1572 : return null. */
1573 :
1574 : inline rtx_jump_table_data *
1575 13932644 : jump_table_for_label (const rtx_code_label *label)
1576 : {
1577 13932644 : return safe_dyn_cast <rtx_jump_table_data *> (NEXT_INSN (label));
1578 : }
1579 :
1580 : #define RTX_FRAME_RELATED_P(RTX) \
1581 : (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \
1582 : CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related)
1583 :
1584 : /* 1 if JUMP RTX is a crossing jump. */
1585 : #define CROSSING_JUMP_P(RTX) \
1586 : (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump)
1587 :
1588 : /* 1 if RTX is a call to a const function. Built from ECF_CONST and
1589 : TREE_READONLY. */
1590 : #define RTL_CONST_CALL_P(RTX) \
1591 : (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging)
1592 :
1593 : /* 1 if RTX is a call to a pure function. Built from ECF_PURE and
1594 : DECL_PURE_P. */
1595 : #define RTL_PURE_CALL_P(RTX) \
1596 : (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val)
1597 :
1598 : /* 1 if RTX is a call to a const or pure function. */
1599 : #define RTL_CONST_OR_PURE_CALL_P(RTX) \
1600 : (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX))
1601 :
1602 : /* 1 if RTX is a call to a looping const or pure function. Built from
1603 : ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */
1604 : #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \
1605 : (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call)
1606 :
1607 : /* 1 if RTX is a call_insn for a sibling call. */
1608 : #define SIBLING_CALL_P(RTX) \
1609 : (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
1610 :
1611 : /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
1612 : #define INSN_ANNULLED_BRANCH_P(RTX) \
1613 : (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging)
1614 :
1615 : /* 1 if RTX is an insn in a delay slot and is from the target of the branch.
1616 : If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
1617 : executed if the branch is taken. For annulled branches with this bit
1618 : clear, the insn should be executed only if the branch is not taken. */
1619 : #define INSN_FROM_TARGET_P(RTX) \
1620 : (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \
1621 : CALL_INSN)->in_struct)
1622 :
1623 : /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening.
1624 : See the comments for ADDR_DIFF_VEC in rtl.def. */
1625 : #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4)
1626 :
1627 : /* In a VALUE, the value cselib has assigned to RTX.
1628 : This is a "struct cselib_val", see cselib.h. */
1629 : #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0)
1630 :
1631 : /* A VALUE's unique identifier. */
1632 : #define CSELIB_VAL_UID(RTX) \
1633 : RTL_FLAG_CHECK1 ("CSELIB_VAL_UID", (RTX), VALUE)->u2.value_uid
1634 :
1635 : /* Holds a list of notes on what this insn does to various REGs.
1636 : It is a chain of EXPR_LIST rtx's, where the second operand is the
1637 : chain pointer and the first operand is the REG being described.
1638 : The mode field of the EXPR_LIST contains not a real machine mode
1639 : but a value from enum reg_note. */
1640 : #define REG_NOTES(INSN) XEXP(INSN, 6)
1641 :
1642 : /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in
1643 : question. */
1644 : #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx)
1645 :
1646 : enum reg_note
1647 : {
1648 : #define DEF_REG_NOTE(NAME) NAME,
1649 : #include "reg-notes.def"
1650 : #undef DEF_REG_NOTE
1651 : REG_NOTE_MAX
1652 : };
1653 :
1654 : /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
1655 : #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
1656 : #define PUT_REG_NOTE_KIND(LINK, KIND) \
1657 : PUT_MODE_RAW (LINK, (machine_mode) (KIND))
1658 :
1659 : /* Names for REG_NOTE's in EXPR_LIST insn's. */
1660 :
1661 : extern const char * const reg_note_name[];
1662 : #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
1663 :
1664 : /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
1665 : USE, CLOBBER and SET expressions.
1666 : USE expressions list the registers filled with arguments that
1667 : are passed to the function.
1668 : CLOBBER expressions document the registers explicitly clobbered
1669 : by this CALL_INSN.
1670 : SET expressions say that the return value of the call (the SET_DEST)
1671 : is equivalent to a value available before the call (the SET_SRC).
1672 : This kind of SET is used when the return value is predictable in
1673 : advance. It is purely an optimisation hint; unlike USEs and CLOBBERs,
1674 : it does not affect register liveness.
1675 :
1676 : Pseudo registers cannot be mentioned in this list. */
1677 : #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7)
1678 :
1679 : /* Specifies the callee's ABI as an index in the range [0, NUM_ABI_IDS - 1].
1680 : See function-abi.h for more details. */
1681 : #define CALL_INSN_ABI_ID(INSN) XCINT(INSN, 8, CALL_INSN)
1682 :
1683 : /* The label-number of a code-label. The assembler label
1684 : is made from `L' and the label-number printed in decimal.
1685 : Label numbers are unique in a compilation. */
1686 : #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5)
1687 :
1688 : /* In a NOTE that is a line number, this is a string for the file name that the
1689 : line is in. We use the same field to record block numbers temporarily in
1690 : NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
1691 : between ints and pointers if we use a different macro for the block number.)
1692 : */
1693 :
1694 : /* Opaque data. */
1695 : #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE)
1696 : #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE)
1697 : #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN);
1698 : #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE)
1699 : #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE)
1700 : #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE)
1701 : #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE)
1702 : #define NOTE_MARKER_LOCATION(INSN) XCLOC (INSN, 3, NOTE)
1703 : #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE)
1704 : #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE)
1705 :
1706 : /* In a NOTE that is a line number, this is the line number.
1707 : Other kinds of NOTEs are identified by negative numbers here. */
1708 : #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE)
1709 :
1710 : /* Nonzero if INSN is a note marking the beginning of a basic block. */
1711 : #define NOTE_INSN_BASIC_BLOCK_P(INSN) \
1712 : (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK)
1713 :
1714 : /* Nonzero if INSN is a debug nonbind marker note,
1715 : for which NOTE_MARKER_LOCATION can be used. */
1716 : #define NOTE_MARKER_P(INSN) \
1717 : (NOTE_P (INSN) && \
1718 : (NOTE_KIND (INSN) == NOTE_INSN_BEGIN_STMT \
1719 : || NOTE_KIND (INSN) == NOTE_INSN_INLINE_ENTRY))
1720 :
1721 : /* Variable declaration and the location of a variable. */
1722 : #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION))
1723 : #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION))
1724 :
1725 : /* Initialization status of the variable in the location. Status
1726 : can be unknown, uninitialized or initialized. See enumeration
1727 : type below. */
1728 : #define PAT_VAR_LOCATION_STATUS(PAT) \
1729 : (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \
1730 : ->u2.var_location_status)
1731 :
1732 : /* Accessors for a NOTE_INSN_VAR_LOCATION. */
1733 : #define NOTE_VAR_LOCATION_DECL(NOTE) \
1734 : PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE))
1735 : #define NOTE_VAR_LOCATION_LOC(NOTE) \
1736 : PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE))
1737 : #define NOTE_VAR_LOCATION_STATUS(NOTE) \
1738 : PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE))
1739 :
1740 : /* Evaluate to TRUE if INSN is a debug insn that denotes a variable
1741 : location/value tracking annotation. */
1742 : #define DEBUG_BIND_INSN_P(INSN) \
1743 : (DEBUG_INSN_P (INSN) \
1744 : && (GET_CODE (PATTERN (INSN)) \
1745 : == VAR_LOCATION))
1746 : /* Evaluate to TRUE if INSN is a debug insn that denotes a program
1747 : source location marker. */
1748 : #define DEBUG_MARKER_INSN_P(INSN) \
1749 : (DEBUG_INSN_P (INSN) \
1750 : && (GET_CODE (PATTERN (INSN)) \
1751 : != VAR_LOCATION))
1752 : /* Evaluate to the marker kind. */
1753 : #define INSN_DEBUG_MARKER_KIND(INSN) \
1754 : (GET_CODE (PATTERN (INSN)) == DEBUG_MARKER \
1755 : ? (GET_MODE (PATTERN (INSN)) == VOIDmode \
1756 : ? NOTE_INSN_BEGIN_STMT \
1757 : : GET_MODE (PATTERN (INSN)) == BLKmode \
1758 : ? NOTE_INSN_INLINE_ENTRY \
1759 : : (enum insn_note)-1) \
1760 : : (enum insn_note)-1)
1761 : /* Create patterns for debug markers. These and the above abstract
1762 : the representation, so that it's easier to get rid of the abuse of
1763 : the mode to hold the marker kind. Other marker types are
1764 : envisioned, so a single bit flag won't do; maybe separate RTL codes
1765 : wouldn't be a problem. */
1766 : #define GEN_RTX_DEBUG_MARKER_BEGIN_STMT_PAT() \
1767 : gen_rtx_DEBUG_MARKER (VOIDmode)
1768 : #define GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT() \
1769 : gen_rtx_DEBUG_MARKER (BLKmode)
1770 :
1771 : /* The VAR_LOCATION rtx in a DEBUG_INSN. */
1772 : #define INSN_VAR_LOCATION(INSN) \
1773 : (RTL_FLAG_CHECK1 ("INSN_VAR_LOCATION", PATTERN (INSN), VAR_LOCATION))
1774 : /* A pointer to the VAR_LOCATION rtx in a DEBUG_INSN. */
1775 : #define INSN_VAR_LOCATION_PTR(INSN) \
1776 : (&PATTERN (INSN))
1777 :
1778 : /* Accessors for a tree-expanded var location debug insn. */
1779 : #define INSN_VAR_LOCATION_DECL(INSN) \
1780 : PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN))
1781 : #define INSN_VAR_LOCATION_LOC(INSN) \
1782 : PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN))
1783 : #define INSN_VAR_LOCATION_STATUS(INSN) \
1784 : PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN))
1785 :
1786 : /* Expand to the RTL that denotes an unknown variable location in a
1787 : DEBUG_INSN. */
1788 : #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx))
1789 :
1790 : /* Determine whether X is such an unknown location. */
1791 : #define VAR_LOC_UNKNOWN_P(X) \
1792 : (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx)
1793 :
1794 : /* 1 if RTX is emitted after a call, but it should take effect before
1795 : the call returns. */
1796 : #define NOTE_DURING_CALL_P(RTX) \
1797 : (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call)
1798 :
1799 : /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */
1800 : #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR)
1801 :
1802 : /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */
1803 : #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR)
1804 :
1805 : /* PARM_DECL DEBUG_PARAMETER_REF references. */
1806 : #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF)
1807 :
1808 : /* Codes that appear in the NOTE_KIND field for kinds of notes
1809 : that are not line numbers. These codes are all negative.
1810 :
1811 : Notice that we do not try to use zero here for any of
1812 : the special note codes because sometimes the source line
1813 : actually can be zero! This happens (for example) when we
1814 : are generating code for the per-translation-unit constructor
1815 : and destructor routines for some C++ translation unit. */
1816 :
1817 : enum insn_note
1818 : {
1819 : #define DEF_INSN_NOTE(NAME) NAME,
1820 : #include "insn-notes.def"
1821 : #undef DEF_INSN_NOTE
1822 :
1823 : NOTE_INSN_MAX
1824 : };
1825 :
1826 : /* Names for NOTE insn's other than line numbers. */
1827 :
1828 : extern const char * const note_insn_name[NOTE_INSN_MAX];
1829 : #define GET_NOTE_INSN_NAME(NOTE_CODE) \
1830 : (note_insn_name[(NOTE_CODE)])
1831 :
1832 : /* The name of a label, in case it corresponds to an explicit label
1833 : in the input source code. */
1834 : #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL)
1835 :
1836 : /* In jump.cc, each label contains a count of the number
1837 : of LABEL_REFs that point at it, so unused labels can be deleted. */
1838 : #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
1839 :
1840 : /* Labels carry a two-bit field composed of the ->jump and ->call
1841 : bits. This field indicates whether the label is an alternate
1842 : entry point, and if so, what kind. */
1843 : enum label_kind
1844 : {
1845 : LABEL_NORMAL = 0, /* ordinary label */
1846 : LABEL_STATIC_ENTRY, /* alternate entry point, not exported */
1847 : LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */
1848 : LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */
1849 : };
1850 :
1851 : #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
1852 :
1853 : /* Retrieve the kind of LABEL. */
1854 : #define LABEL_KIND(LABEL) __extension__ \
1855 : ({ __typeof (LABEL) const _label = (LABEL); \
1856 : if (! LABEL_P (_label)) \
1857 : rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
1858 : __FUNCTION__); \
1859 : (enum label_kind) ((_label->jump << 1) | _label->call); })
1860 :
1861 : /* Set the kind of LABEL. */
1862 : #define SET_LABEL_KIND(LABEL, KIND) do { \
1863 : __typeof (LABEL) const _label = (LABEL); \
1864 : const unsigned int _kind = (KIND); \
1865 : if (! LABEL_P (_label)) \
1866 : rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
1867 : __FUNCTION__); \
1868 : _label->jump = ((_kind >> 1) & 1); \
1869 : _label->call = (_kind & 1); \
1870 : } while (0)
1871 :
1872 : #else
1873 :
1874 : /* Retrieve the kind of LABEL. */
1875 : #define LABEL_KIND(LABEL) \
1876 : ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
1877 :
1878 : /* Set the kind of LABEL. */
1879 : #define SET_LABEL_KIND(LABEL, KIND) do { \
1880 : rtx const _label = (LABEL); \
1881 : const unsigned int _kind = (KIND); \
1882 : _label->jump = ((_kind >> 1) & 1); \
1883 : _label->call = (_kind & 1); \
1884 : } while (0)
1885 :
1886 : #endif /* rtl flag checking */
1887 :
1888 : #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
1889 :
1890 : /* In jump.cc, each JUMP_INSN can point to a label that it can jump to,
1891 : so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
1892 : be decremented and possibly the label can be deleted. */
1893 : #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN)
1894 :
1895 8850013 : inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn)
1896 : {
1897 8850013 : return safe_as_a <rtx_insn *> (JUMP_LABEL (insn));
1898 : }
1899 :
1900 : /* Methods of rtx_jump_insn. */
1901 :
1902 8071694 : inline rtx rtx_jump_insn::jump_label () const
1903 : {
1904 8071694 : return JUMP_LABEL (this);
1905 : }
1906 :
1907 0 : inline rtx_code_label *rtx_jump_insn::jump_target () const
1908 : {
1909 0 : return safe_as_a <rtx_code_label *> (JUMP_LABEL (this));
1910 : }
1911 :
1912 60900 : inline void rtx_jump_insn::set_jump_target (rtx_code_label *target)
1913 : {
1914 60900 : JUMP_LABEL (this) = target;
1915 : }
1916 :
1917 : /* Once basic blocks are found, each CODE_LABEL starts a chain that
1918 : goes through all the LABEL_REFs that jump to that label. The chain
1919 : eventually winds up at the CODE_LABEL: it is circular. */
1920 : #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL)
1921 :
1922 : /* Get the label that a LABEL_REF references. */
1923 : inline rtx_insn *
1924 91917751 : label_ref_label (const_rtx ref)
1925 : {
1926 91873563 : return as_a<rtx_insn *> (XCEXP (ref, 0, LABEL_REF));
1927 : }
1928 :
1929 : /* Set the label that LABEL_REF ref refers to. */
1930 :
1931 : inline void
1932 33876961 : set_label_ref_label (rtx ref, rtx_insn *label)
1933 : {
1934 33876961 : XCEXP (ref, 0, LABEL_REF) = label;
1935 234 : }
1936 :
1937 : /* For a REG rtx, REGNO extracts the register number. REGNO can only
1938 : be used on RHS. Use SET_REGNO to change the value. */
1939 : #define REGNO(RTX) (rhs_regno(RTX))
1940 : #define SET_REGNO(RTX, N) (df_ref_change_reg_with_loc (RTX, N))
1941 :
1942 : /* Return the number of consecutive registers in a REG. This is always
1943 : 1 for pseudo registers and is determined by TARGET_HARD_REGNO_NREGS for
1944 : hard registers. */
1945 : #define REG_NREGS(RTX) (REG_CHECK (RTX)->nregs)
1946 :
1947 : /* ORIGINAL_REGNO holds the number the register originally had; for a
1948 : pseudo register turned into a hard reg this will hold the old pseudo
1949 : register number. */
1950 : #define ORIGINAL_REGNO(RTX) \
1951 : (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno)
1952 :
1953 : /* Force the REGNO macro to only be used on the lhs. */
1954 : inline unsigned int
1955 79066487461 : rhs_regno (const_rtx x)
1956 : {
1957 69441854330 : return REG_CHECK (x)->regno;
1958 : }
1959 :
1960 : /* Return the final register in REG X plus one. */
1961 : inline unsigned int
1962 14057091075 : END_REGNO (const_rtx x)
1963 : {
1964 14056174182 : return REGNO (x) + REG_NREGS (x);
1965 : }
1966 :
1967 : /* Change the REGNO and REG_NREGS of REG X to the specified values,
1968 : bypassing the df machinery. */
1969 : inline void
1970 1708432725 : set_regno_raw (rtx x, unsigned int regno, unsigned int nregs)
1971 : {
1972 1708432725 : reg_info *reg = REG_CHECK (x);
1973 1708432725 : reg->regno = regno;
1974 1708432725 : reg->nregs = nregs;
1975 : }
1976 :
1977 : /* 1 if RTX is a reg or parallel that is the current function's return
1978 : value. */
1979 : #define REG_FUNCTION_VALUE_P(RTX) \
1980 : (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val)
1981 :
1982 : /* 1 if RTX is a reg that corresponds to a variable declared by the user. */
1983 : #define REG_USERVAR_P(RTX) \
1984 : (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil)
1985 :
1986 : /* 1 if RTX is a reg that holds a pointer value. */
1987 : #define REG_POINTER(RTX) \
1988 : (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related)
1989 :
1990 : /* 1 if RTX is a mem that holds a pointer value. */
1991 : #define MEM_POINTER(RTX) \
1992 : (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related)
1993 :
1994 : /* 1 if the given register REG corresponds to a hard register. */
1995 : #define HARD_REGISTER_P(REG) HARD_REGISTER_NUM_P (REGNO (REG))
1996 :
1997 : /* 1 if the given register number REG_NO corresponds to a hard register. */
1998 : #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
1999 :
2000 : /* 1 if the given register REG corresponds to a virtual register. */
2001 : #define VIRTUAL_REGISTER_P(REG) VIRTUAL_REGISTER_NUM_P (REGNO (REG))
2002 :
2003 : /* 1 if the given register number REG_NO corresponds to a virtual register. */
2004 : #define VIRTUAL_REGISTER_NUM_P(REG_NO) \
2005 : IN_RANGE (REG_NO, FIRST_VIRTUAL_REGISTER, LAST_VIRTUAL_REGISTER)
2006 :
2007 : /* For a CONST_INT rtx, INTVAL extracts the integer. */
2008 : #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT)
2009 : #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX))
2010 :
2011 : /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of
2012 : elements actually needed to represent the constant.
2013 : CONST_WIDE_INT_ELT gets one of the elements. 0 is the least
2014 : significant HOST_WIDE_INT. */
2015 : #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT)
2016 : #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX)
2017 : #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N)
2018 :
2019 : /* For a CONST_POLY_INT, CONST_POLY_INT_COEFFS gives access to the
2020 : individual coefficients, in the form of a trailing_wide_ints structure. */
2021 : #define CONST_POLY_INT_COEFFS(RTX) \
2022 : (RTL_FLAG_CHECK1("CONST_POLY_INT_COEFFS", (RTX), \
2023 : CONST_POLY_INT)->u.cpi.coeffs)
2024 :
2025 : /* For a CONST_DOUBLE:
2026 : #if TARGET_SUPPORTS_WIDE_INT == 0
2027 : For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the
2028 : low-order word and ..._HIGH the high-order.
2029 : #endif
2030 : For a float, there is a REAL_VALUE_TYPE structure, and
2031 : CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
2032 : #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode)
2033 : #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode)
2034 : #define CONST_DOUBLE_REAL_VALUE(r) \
2035 : ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode))
2036 :
2037 : #define CONST_FIXED_VALUE(r) \
2038 : ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode))
2039 : #define CONST_FIXED_VALUE_HIGH(r) \
2040 : ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high))
2041 : #define CONST_FIXED_VALUE_LOW(r) \
2042 : ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low))
2043 :
2044 : /* For a CONST_VECTOR, return element #n. */
2045 : #define CONST_VECTOR_ELT(RTX, N) const_vector_elt (RTX, N)
2046 :
2047 : /* See rtl.texi for a description of these macros. */
2048 : #define CONST_VECTOR_NPATTERNS(RTX) \
2049 : (RTL_FLAG_CHECK1 ("CONST_VECTOR_NPATTERNS", (RTX), CONST_VECTOR) \
2050 : ->u2.const_vector.npatterns)
2051 :
2052 : #define CONST_VECTOR_NELTS_PER_PATTERN(RTX) \
2053 : (RTL_FLAG_CHECK1 ("CONST_VECTOR_NELTS_PER_PATTERN", (RTX), CONST_VECTOR) \
2054 : ->u2.const_vector.nelts_per_pattern)
2055 :
2056 : #define CONST_VECTOR_DUPLICATE_P(RTX) \
2057 : (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 1)
2058 :
2059 : #define CONST_VECTOR_STEPPED_P(RTX) \
2060 : (CONST_VECTOR_NELTS_PER_PATTERN (RTX) == 3)
2061 :
2062 : #define CONST_VECTOR_ENCODED_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
2063 :
2064 : /* Return the number of elements encoded directly in a CONST_VECTOR. */
2065 :
2066 : inline unsigned int
2067 8329465 : const_vector_encoded_nelts (const_rtx x)
2068 : {
2069 8329465 : return CONST_VECTOR_NPATTERNS (x) * CONST_VECTOR_NELTS_PER_PATTERN (x);
2070 : }
2071 :
2072 : /* For a CONST_VECTOR, return the number of elements in a vector. */
2073 : #define CONST_VECTOR_NUNITS(RTX) GET_MODE_NUNITS (GET_MODE (RTX))
2074 :
2075 : /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
2076 : SUBREG_BYTE extracts the byte-number. */
2077 :
2078 : #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
2079 : #define SUBREG_BYTE(RTX) XCSUBREG (RTX, 1, SUBREG)
2080 :
2081 : /* in rtlanal.cc */
2082 : /* Return the right cost to give to an operation
2083 : to make the cost of the corresponding register-to-register instruction
2084 : N times that of a fast register-to-register instruction. */
2085 : #define COSTS_N_INSNS(N) ((N) * 4)
2086 :
2087 : /* Maximum cost of an rtl expression. This value has the special meaning
2088 : not to use an rtx with this cost under any circumstances. */
2089 : #define MAX_COST INT_MAX
2090 :
2091 : /* Return true if CODE always has VOIDmode. */
2092 :
2093 : inline bool
2094 58336853 : always_void_p (enum rtx_code code)
2095 : {
2096 58336853 : switch (code)
2097 : {
2098 : case SET:
2099 : case PC:
2100 : case RETURN:
2101 : case SIMPLE_RETURN:
2102 : return true;
2103 :
2104 34320164 : default:
2105 34320164 : return false;
2106 : }
2107 : }
2108 :
2109 : /* A structure to hold all available cost information about an rtl
2110 : expression. */
2111 : struct full_rtx_costs
2112 : {
2113 : int speed;
2114 : int size;
2115 : };
2116 :
2117 : /* Initialize a full_rtx_costs structure C to the maximum cost. */
2118 : inline void
2119 1922949 : init_costs_to_max (struct full_rtx_costs *c)
2120 : {
2121 1922949 : c->speed = MAX_COST;
2122 1922949 : c->size = MAX_COST;
2123 : }
2124 :
2125 : /* Initialize a full_rtx_costs structure C to zero cost. */
2126 : inline void
2127 6 : init_costs_to_zero (struct full_rtx_costs *c)
2128 : {
2129 6 : c->speed = 0;
2130 6 : c->size = 0;
2131 : }
2132 :
2133 : /* Compare two full_rtx_costs structures A and B, returning true
2134 : if A < B when optimizing for speed. */
2135 : inline bool
2136 2161865 : costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b,
2137 : bool speed)
2138 : {
2139 2161865 : if (speed)
2140 1421079 : return (a->speed < b->speed
2141 1439366 : || (a->speed == b->speed && a->size < b->size));
2142 : else
2143 740786 : return (a->size < b->size
2144 745413 : || (a->size == b->size && a->speed < b->speed));
2145 : }
2146 :
2147 : /* Increase both members of the full_rtx_costs structure C by the
2148 : cost of N insns. */
2149 : inline void
2150 368 : costs_add_n_insns (struct full_rtx_costs *c, int n)
2151 : {
2152 368 : c->speed += COSTS_N_INSNS (n);
2153 368 : c->size += COSTS_N_INSNS (n);
2154 : }
2155 :
2156 : /* Describes the shape of a subreg:
2157 :
2158 : inner_mode == the mode of the SUBREG_REG
2159 : offset == the SUBREG_BYTE
2160 : outer_mode == the mode of the SUBREG itself. */
2161 : class subreg_shape {
2162 : public:
2163 : subreg_shape (machine_mode, poly_uint16, machine_mode);
2164 : bool operator == (const subreg_shape &) const;
2165 : bool operator != (const subreg_shape &) const;
2166 : unsigned HOST_WIDE_INT unique_id () const;
2167 :
2168 : machine_mode inner_mode;
2169 : poly_uint16 offset;
2170 : machine_mode outer_mode;
2171 : };
2172 :
2173 : inline
2174 3415805 : subreg_shape::subreg_shape (machine_mode inner_mode_in,
2175 : poly_uint16 offset_in,
2176 : machine_mode outer_mode_in)
2177 : : inner_mode (inner_mode_in), offset (offset_in), outer_mode (outer_mode_in)
2178 : {}
2179 :
2180 : inline bool
2181 11023221 : subreg_shape::operator == (const subreg_shape &other) const
2182 : {
2183 11023221 : return (inner_mode == other.inner_mode
2184 4111025 : && known_eq (offset, other.offset)
2185 14704790 : && outer_mode == other.outer_mode);
2186 : }
2187 :
2188 : inline bool
2189 : subreg_shape::operator != (const subreg_shape &other) const
2190 : {
2191 : return !operator == (other);
2192 : }
2193 :
2194 : /* Return an integer that uniquely identifies this shape. Structures
2195 : like rtx_def assume that a mode can fit in an 8-bit bitfield and no
2196 : current mode is anywhere near being 65536 bytes in size, so the
2197 : id comfortably fits in an int. */
2198 :
2199 : inline unsigned HOST_WIDE_INT
2200 11645964 : subreg_shape::unique_id () const
2201 : {
2202 11645964 : { STATIC_ASSERT (MAX_MACHINE_MODE <= (1 << MACHINE_MODE_BITSIZE)); }
2203 11645964 : { STATIC_ASSERT (NUM_POLY_INT_COEFFS <= 3); }
2204 11645964 : { STATIC_ASSERT (sizeof (offset.coeffs[0]) <= 2); }
2205 11645964 : int res = (int) inner_mode + ((int) outer_mode << 8);
2206 11645964 : for (int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2207 11645964 : res += (HOST_WIDE_INT) offset.coeffs[i] << ((1 + i) * 16);
2208 3415805 : return res;
2209 : }
2210 :
2211 : /* Return the shape of a SUBREG rtx. */
2212 :
2213 : inline subreg_shape
2214 3415805 : shape_of_subreg (const_rtx x)
2215 : {
2216 3415805 : return subreg_shape (GET_MODE (SUBREG_REG (x)),
2217 3415805 : SUBREG_BYTE (x), GET_MODE (x));
2218 : }
2219 :
2220 : /* Information about an address. This structure is supposed to be able
2221 : to represent all supported target addresses. Please extend it if it
2222 : is not yet general enough. */
2223 : struct address_info {
2224 : /* The mode of the value being addressed, or VOIDmode if this is
2225 : a load-address operation with no known address mode. */
2226 : machine_mode mode;
2227 :
2228 : /* The address space. */
2229 : addr_space_t as;
2230 :
2231 : /* True if this is an RTX_AUTOINC address. */
2232 : bool autoinc_p;
2233 :
2234 : /* A pointer to the top-level address. */
2235 : rtx *outer;
2236 :
2237 : /* A pointer to the inner address, after all address mutations
2238 : have been stripped from the top-level address. It can be one
2239 : of the following:
2240 :
2241 : - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null.
2242 :
2243 : - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP
2244 : points to the step value, depending on whether the step is variable
2245 : or constant respectively. SEGMENT is null.
2246 :
2247 : - A plain sum of the form SEGMENT + BASE + INDEX + DISP,
2248 : with null fields evaluating to 0. */
2249 : rtx *inner;
2250 :
2251 : /* Components that make up *INNER. Each one may be null or nonnull.
2252 : When nonnull, their meanings are as follows:
2253 :
2254 : - *SEGMENT is the "segment" of memory to which the address refers.
2255 : This value is entirely target-specific and is only called a "segment"
2256 : because that's its most typical use. It contains exactly one UNSPEC,
2257 : pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need
2258 : reloading.
2259 :
2260 : - *BASE is a variable expression representing a base address.
2261 : It contains exactly one "term", pointed to by BASE_TERM.
2262 : This term can be one of the following:
2263 :
2264 : (1) a REG, or a SUBREG of a REG
2265 : (2) an eliminated REG (a PLUS of (1) and a constant)
2266 : (3) a MEM, or a SUBREG of a MEM
2267 : (4) a SCRATCH
2268 :
2269 : This term is the one that base_reg_class constrains.
2270 :
2271 : - *INDEX is a variable expression representing an index value.
2272 : It may be a scaled expression, such as a MULT. It has exactly
2273 : one "term", pointed to by INDEX_TERM. The possible terms are
2274 : the same as for BASE. This term is the one that index_reg_class
2275 : constrains.
2276 :
2277 : - *DISP is a constant, possibly mutated. DISP_TERM points to the
2278 : unmutated RTX_CONST_OBJ. */
2279 : rtx *segment;
2280 : rtx *base;
2281 : rtx *index;
2282 : rtx *disp;
2283 :
2284 : rtx *segment_term;
2285 : rtx *base_term;
2286 : rtx *index_term;
2287 : rtx *disp_term;
2288 :
2289 : /* In a {PRE,POST}_MODIFY address, this points to a second copy
2290 : of BASE_TERM, otherwise it is null. */
2291 : rtx *base_term2;
2292 :
2293 : /* ADDRESS if this structure describes an address operand, MEM if
2294 : it describes a MEM address. */
2295 : enum rtx_code addr_outer_code;
2296 :
2297 : /* If BASE is nonnull, this is the code of the rtx that contains it. */
2298 : enum rtx_code base_outer_code;
2299 : };
2300 :
2301 : /* This is used to bundle an rtx and a mode together so that the pair
2302 : can be used with the wi:: routines. If we ever put modes into rtx
2303 : integer constants, this should go away and then just pass an rtx in. */
2304 : typedef std::pair <rtx, machine_mode> rtx_mode_t;
2305 :
2306 : namespace wi
2307 : {
2308 : template <>
2309 : struct int_traits <rtx_mode_t>
2310 : {
2311 : static const enum precision_type precision_type = VAR_PRECISION;
2312 : static const bool host_dependent_precision = false;
2313 : /* This ought to be true, except for the special case that BImode
2314 : is canonicalized to STORE_FLAG_VALUE, which might be 1. */
2315 : static const bool is_sign_extended = false;
2316 : static const bool needs_write_val_arg = false;
2317 : static unsigned int get_precision (const rtx_mode_t &);
2318 : static wi::storage_ref decompose (HOST_WIDE_INT *, unsigned int,
2319 : const rtx_mode_t &);
2320 : };
2321 : }
2322 :
2323 : inline unsigned int
2324 1236107379 : wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x)
2325 : {
2326 1236107379 : return GET_MODE_PRECISION (as_a <scalar_mode> (x.second));
2327 : }
2328 :
2329 : inline wi::storage_ref
2330 631319860 : wi::int_traits <rtx_mode_t>::decompose (HOST_WIDE_INT *,
2331 : unsigned int precision,
2332 : const rtx_mode_t &x)
2333 : {
2334 631319860 : gcc_checking_assert (precision == get_precision (x));
2335 631319860 : switch (GET_CODE (x.first))
2336 : {
2337 630636159 : case CONST_INT:
2338 630636159 : if (precision < HOST_BITS_PER_WIDE_INT)
2339 : /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many
2340 : targets is 1 rather than -1. */
2341 201123667 : gcc_checking_assert (INTVAL (x.first)
2342 : == sext_hwi (INTVAL (x.first), precision)
2343 : || (x.second == BImode && INTVAL (x.first) == 1));
2344 :
2345 630636159 : return wi::storage_ref (&INTVAL (x.first), 1, precision);
2346 :
2347 683701 : case CONST_WIDE_INT:
2348 683701 : return wi::storage_ref (&CONST_WIDE_INT_ELT (x.first, 0),
2349 683701 : CONST_WIDE_INT_NUNITS (x.first), precision);
2350 :
2351 : #if TARGET_SUPPORTS_WIDE_INT == 0
2352 : case CONST_DOUBLE:
2353 : return wi::storage_ref (&CONST_DOUBLE_LOW (x.first), 2, precision);
2354 : #endif
2355 :
2356 0 : default:
2357 0 : gcc_unreachable ();
2358 : }
2359 : }
2360 :
2361 : namespace wi
2362 : {
2363 : hwi_with_prec shwi (HOST_WIDE_INT, machine_mode mode);
2364 : wide_int min_value (machine_mode, signop);
2365 : wide_int max_value (machine_mode, signop);
2366 : }
2367 :
2368 : inline wi::hwi_with_prec
2369 279406 : wi::shwi (HOST_WIDE_INT val, machine_mode mode)
2370 : {
2371 279406 : return shwi (val, GET_MODE_PRECISION (as_a <scalar_mode> (mode)));
2372 : }
2373 :
2374 : /* Produce the smallest number that is represented in MODE. The precision
2375 : is taken from MODE and the sign from SGN. */
2376 : inline wide_int
2377 113202 : wi::min_value (machine_mode mode, signop sgn)
2378 : {
2379 113202 : return min_value (GET_MODE_PRECISION (as_a <scalar_mode> (mode)), sgn);
2380 : }
2381 :
2382 : /* Produce the largest number that is represented in MODE. The precision
2383 : is taken from MODE and the sign from SGN. */
2384 : inline wide_int
2385 67224 : wi::max_value (machine_mode mode, signop sgn)
2386 : {
2387 67224 : return max_value (GET_MODE_PRECISION (as_a <scalar_mode> (mode)), sgn);
2388 : }
2389 :
2390 : namespace wi
2391 : {
2392 : typedef poly_int<NUM_POLY_INT_COEFFS,
2393 : generic_wide_int <wide_int_ref_storage <false, false> > >
2394 : rtx_to_poly_wide_ref;
2395 : rtx_to_poly_wide_ref to_poly_wide (const_rtx, machine_mode);
2396 : }
2397 :
2398 : /* Return the value of a CONST_POLY_INT in its native precision. */
2399 :
2400 : inline wi::rtx_to_poly_wide_ref
2401 0 : const_poly_int_value (const_rtx x)
2402 : {
2403 0 : poly_int<NUM_POLY_INT_COEFFS, WIDE_INT_REF_FOR (wide_int)> res;
2404 0 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2405 0 : res.coeffs[i] = CONST_POLY_INT_COEFFS (x)[i];
2406 0 : return res;
2407 : }
2408 :
2409 : /* Return true if X is a scalar integer or a CONST_POLY_INT. The value
2410 : can then be extracted using wi::to_poly_wide. */
2411 :
2412 : inline bool
2413 103816272 : poly_int_rtx_p (const_rtx x)
2414 : {
2415 103816272 : return CONST_SCALAR_INT_P (x) || CONST_POLY_INT_P (x);
2416 : }
2417 :
2418 : /* Access X (which satisfies poly_int_rtx_p) as a poly_wide_int.
2419 : MODE is the mode of X. */
2420 :
2421 : inline wi::rtx_to_poly_wide_ref
2422 10155060 : wi::to_poly_wide (const_rtx x, machine_mode mode)
2423 : {
2424 10155060 : if (CONST_POLY_INT_P (x))
2425 : return const_poly_int_value (x);
2426 10155060 : return rtx_mode_t (const_cast<rtx> (x), mode);
2427 : }
2428 :
2429 : /* Return the value of X as a poly_int64. */
2430 :
2431 : inline poly_int64
2432 8838444 : rtx_to_poly_int64 (const_rtx x)
2433 : {
2434 8838444 : if (CONST_POLY_INT_P (x))
2435 : {
2436 : poly_int64 res;
2437 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2438 : res.coeffs[i] = CONST_POLY_INT_COEFFS (x)[i].to_shwi ();
2439 : return res;
2440 : }
2441 8838444 : return INTVAL (x);
2442 : }
2443 :
2444 : /* Return true if arbitrary value X is an integer constant that can
2445 : be represented as a poly_int64. Store the value in *RES if so,
2446 : otherwise leave it unmodified. */
2447 :
2448 : inline bool
2449 3576962429 : poly_int_rtx_p (const_rtx x, poly_int64 *res)
2450 : {
2451 2877649877 : if (CONST_INT_P (x))
2452 : {
2453 2593752993 : *res = INTVAL (x);
2454 2593752993 : return true;
2455 : }
2456 : if (CONST_POLY_INT_P (x))
2457 : {
2458 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2459 : if (!wi::fits_shwi_p (CONST_POLY_INT_COEFFS (x)[i]))
2460 : return false;
2461 : for (unsigned int i = 0; i < NUM_POLY_INT_COEFFS; ++i)
2462 : res->coeffs[i] = CONST_POLY_INT_COEFFS (x)[i].to_shwi ();
2463 : return true;
2464 : }
2465 : return false;
2466 : }
2467 :
2468 : extern void init_rtlanal (void);
2469 : extern int rtx_cost (rtx, machine_mode, enum rtx_code, int, bool);
2470 : extern int address_cost (rtx, machine_mode, addr_space_t, bool);
2471 : extern void get_full_rtx_cost (rtx, machine_mode, enum rtx_code, int,
2472 : struct full_rtx_costs *);
2473 : extern bool native_encode_rtx (machine_mode, rtx, vec<target_unit> &,
2474 : unsigned int, unsigned int);
2475 : extern wide_int native_decode_int (const vec<target_unit> &, unsigned int,
2476 : unsigned int, unsigned int);
2477 : extern rtx native_decode_rtx (machine_mode, const vec<target_unit> &,
2478 : unsigned int);
2479 : extern rtx native_decode_vector_rtx (machine_mode, const vec<target_unit> &,
2480 : unsigned int, unsigned int, unsigned int);
2481 : extern poly_uint64 subreg_lsb (const_rtx);
2482 : extern poly_uint64 subreg_size_lsb (poly_uint64, poly_uint64, poly_uint64);
2483 : extern poly_uint64 subreg_size_offset_from_lsb (poly_uint64, poly_uint64,
2484 : poly_uint64);
2485 : extern bool read_modify_subreg_p (const_rtx);
2486 :
2487 : /* Given a subreg's OUTER_MODE, INNER_MODE, and SUBREG_BYTE, return the
2488 : bit offset at which the subreg begins (counting from the least significant
2489 : bit of the operand). */
2490 :
2491 : inline poly_uint64
2492 3231791 : subreg_lsb_1 (machine_mode outer_mode, machine_mode inner_mode,
2493 : poly_uint64 subreg_byte)
2494 : {
2495 6463582 : return subreg_size_lsb (GET_MODE_SIZE (outer_mode),
2496 3231791 : GET_MODE_SIZE (inner_mode), subreg_byte);
2497 : }
2498 :
2499 : /* Return the subreg byte offset for a subreg whose outer mode is
2500 : OUTER_MODE, whose inner mode is INNER_MODE, and where there are
2501 : LSB_SHIFT *bits* between the lsb of the outer value and the lsb of
2502 : the inner value. This is the inverse of subreg_lsb_1 (which converts
2503 : byte offsets to bit shifts). */
2504 :
2505 : inline poly_uint64
2506 3233 : subreg_offset_from_lsb (machine_mode outer_mode,
2507 : machine_mode inner_mode,
2508 : poly_uint64 lsb_shift)
2509 : {
2510 6466 : return subreg_size_offset_from_lsb (GET_MODE_SIZE (outer_mode),
2511 3233 : GET_MODE_SIZE (inner_mode), lsb_shift);
2512 : }
2513 :
2514 : extern unsigned int subreg_regno_offset (unsigned int, machine_mode,
2515 : poly_uint64, machine_mode);
2516 : extern bool subreg_offset_representable_p (unsigned int, machine_mode,
2517 : poly_uint64, machine_mode);
2518 : extern unsigned int subreg_regno (const_rtx);
2519 : extern int simplify_subreg_regno (unsigned int, machine_mode,
2520 : poly_uint64, machine_mode,
2521 : bool allow_stack_regs = false);
2522 : extern int lowpart_subreg_regno (unsigned int, machine_mode,
2523 : machine_mode);
2524 : extern unsigned int subreg_nregs (const_rtx);
2525 : extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx);
2526 : extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, machine_mode);
2527 : extern unsigned int num_sign_bit_copies (const_rtx, machine_mode);
2528 : extern bool constant_pool_constant_p (rtx);
2529 : extern bool truncated_to_mode (machine_mode, const_rtx);
2530 : extern int low_bitmask_len (machine_mode, unsigned HOST_WIDE_INT);
2531 : extern void split_double (rtx, rtx *, rtx *);
2532 : extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0);
2533 : extern void decompose_address (struct address_info *, rtx *,
2534 : machine_mode, addr_space_t, enum rtx_code);
2535 : extern void decompose_lea_address (struct address_info *, rtx *);
2536 : extern void decompose_mem_address (struct address_info *, rtx);
2537 : extern void update_address (struct address_info *);
2538 : extern HOST_WIDE_INT get_index_scale (const struct address_info *);
2539 : extern enum rtx_code get_index_code (const struct address_info *);
2540 :
2541 : /* 1 if RTX is a subreg containing a reg that is already known to be
2542 : sign- or zero-extended from the mode of the subreg to the mode of
2543 : the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
2544 : extension.
2545 :
2546 : When used as a LHS, is means that this extension must be done
2547 : when assigning to SUBREG_REG. */
2548 :
2549 : #define SUBREG_PROMOTED_VAR_P(RTX) \
2550 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
2551 :
2552 : /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case
2553 : this gives the necessary extensions:
2554 : 0 - signed (SPR_SIGNED)
2555 : 1 - normal unsigned (SPR_UNSIGNED)
2556 : 2 - value is both sign and unsign extended for mode
2557 : (SPR_SIGNED_AND_UNSIGNED).
2558 : -1 - pointer unsigned, which most often can be handled like unsigned
2559 : extension, except for generating instructions where we need to
2560 : emit special code (ptr_extend insns) on some architectures
2561 : (SPR_POINTER). */
2562 :
2563 : const int SRP_POINTER = -1;
2564 : const int SRP_SIGNED = 0;
2565 : const int SRP_UNSIGNED = 1;
2566 : const int SRP_SIGNED_AND_UNSIGNED = 2;
2567 :
2568 : /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */
2569 : #define SUBREG_PROMOTED_SET(RTX, VAL) \
2570 : do { \
2571 : rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \
2572 : (RTX), SUBREG); \
2573 : switch (VAL) \
2574 : { \
2575 : case SRP_POINTER: \
2576 : _rtx->volatil = 0; \
2577 : _rtx->unchanging = 0; \
2578 : break; \
2579 : case SRP_SIGNED: \
2580 : _rtx->volatil = 0; \
2581 : _rtx->unchanging = 1; \
2582 : break; \
2583 : case SRP_UNSIGNED: \
2584 : _rtx->volatil = 1; \
2585 : _rtx->unchanging = 0; \
2586 : break; \
2587 : case SRP_SIGNED_AND_UNSIGNED: \
2588 : _rtx->volatil = 1; \
2589 : _rtx->unchanging = 1; \
2590 : break; \
2591 : } \
2592 : } while (0)
2593 :
2594 : /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(),
2595 : including SRP_SIGNED_AND_UNSIGNED if promoted for
2596 : both signed and unsigned. */
2597 : #define SUBREG_PROMOTED_GET(RTX) \
2598 : (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\
2599 : + (RTX)->unchanging - 1)
2600 :
2601 : /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */
2602 : #define SUBREG_PROMOTED_SIGN(RTX) \
2603 : ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\
2604 : : (RTX)->unchanging - 1)
2605 :
2606 : /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2607 : for SIGNED type. */
2608 : #define SUBREG_PROMOTED_SIGNED_P(RTX) \
2609 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging)
2610 :
2611 : /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted
2612 : for UNSIGNED type. */
2613 : #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
2614 : (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil)
2615 :
2616 : /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */
2617 : #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \
2618 : ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \
2619 : : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \
2620 : : SUBREG_PROMOTED_UNSIGNED_P (RTX))
2621 :
2622 : /* True if the REG is the static chain register for some CALL_INSN. */
2623 : #define STATIC_CHAIN_REG_P(RTX) \
2624 : (RTL_FLAG_CHECK1 ("STATIC_CHAIN_REG_P", (RTX), REG)->jump)
2625 :
2626 : /* True if the subreg was generated by LRA for reload insns. Such
2627 : subregs are valid only during LRA. */
2628 : #define LRA_SUBREG_P(RTX) \
2629 : (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump)
2630 :
2631 : /* Access various components of an ASM_OPERANDS rtx. */
2632 :
2633 : #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
2634 : #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
2635 : #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
2636 : #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
2637 : #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
2638 : #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
2639 : #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
2640 : #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
2641 : XCVECEXP (RTX, 4, N, ASM_OPERANDS)
2642 : #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
2643 : XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
2644 : #define ASM_OPERANDS_INPUT_MODE(RTX, N) \
2645 : GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
2646 : #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS)
2647 : #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS)
2648 : #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS)
2649 : #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCLOC (RTX, 6, ASM_OPERANDS)
2650 : #define ASM_INPUT_SOURCE_LOCATION(RTX) XCLOC (RTX, 1, ASM_INPUT)
2651 :
2652 : /* 1 if RTX is a mem that is statically allocated in read-only memory. */
2653 : #define MEM_READONLY_P(RTX) \
2654 : (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging)
2655 :
2656 : /* 1 if RTX is a mem and we should keep the alias set for this mem
2657 : unchanged when we access a component. Set to 1, or example, when we
2658 : are already in a non-addressable component of an aggregate. */
2659 : #define MEM_KEEP_ALIAS_SET_P(RTX) \
2660 : (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
2661 :
2662 : /* 1 if RTX is a mem or asm_operand for a volatile reference. */
2663 : #define MEM_VOLATILE_P(RTX) \
2664 : (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
2665 : ASM_INPUT)->volatil)
2666 :
2667 : /* 1 if RTX is a mem that cannot trap. */
2668 : #define MEM_NOTRAP_P(RTX) \
2669 : (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call)
2670 :
2671 : /* The memory attribute block. We provide access macros for each value
2672 : in the block and provide defaults if none specified. */
2673 : #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
2674 :
2675 : /* The register attribute block. We provide access macros for each value
2676 : in the block and provide defaults if none specified. */
2677 : #define REG_ATTRS(RTX) (REG_CHECK (RTX)->attrs)
2678 :
2679 : #ifndef GENERATOR_FILE
2680 : /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
2681 : set, and may alias anything. Otherwise, the MEM can only alias
2682 : MEMs in a conflicting alias set. This value is set in a
2683 : language-dependent manner in the front-end, and should not be
2684 : altered in the back-end. These set numbers are tested with
2685 : alias_sets_conflict_p. */
2686 : #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias)
2687 :
2688 : /* For a MEM rtx, the decl it is known to refer to, if it is known to
2689 : refer to part of a DECL. It may also be a COMPONENT_REF. */
2690 : #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr)
2691 :
2692 : /* For a MEM rtx, true if its MEM_OFFSET is known. */
2693 : #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p)
2694 :
2695 : /* For a MEM rtx, the offset from the start of MEM_EXPR. */
2696 : #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset)
2697 :
2698 : /* For a MEM rtx, the address space. */
2699 : #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace)
2700 :
2701 : /* For a MEM rtx, true if its MEM_SIZE is known. */
2702 : #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p)
2703 :
2704 : /* For a MEM rtx, the size in bytes of the MEM. */
2705 : #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size)
2706 :
2707 : /* For a MEM rtx, the alignment in bits. We can use the alignment of the
2708 : mode as a default when STRICT_ALIGNMENT, but not if not. */
2709 : #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align)
2710 : #else
2711 : #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC
2712 : #endif
2713 :
2714 : /* For a REG rtx, the decl it is known to refer to, if it is known to
2715 : refer to part of a DECL. */
2716 : #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
2717 :
2718 : /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an
2719 : HOST_WIDE_INT. */
2720 : #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
2721 :
2722 : /* Copy the attributes that apply to memory locations from RHS to LHS. */
2723 : #define MEM_COPY_ATTRIBUTES(LHS, RHS) \
2724 : (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
2725 : MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
2726 : MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \
2727 : MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
2728 : MEM_POINTER (LHS) = MEM_POINTER (RHS), \
2729 : MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
2730 :
2731 : /* 1 if RTX is a label_ref for a nonlocal label. */
2732 : /* Likewise in an expr_list for a REG_LABEL_OPERAND or
2733 : REG_LABEL_TARGET note. */
2734 : #define LABEL_REF_NONLOCAL_P(RTX) \
2735 : (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil)
2736 :
2737 : /* 1 if RTX is a code_label that should always be considered to be needed. */
2738 : #define LABEL_PRESERVE_P(RTX) \
2739 : (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
2740 :
2741 : /* During sched, 1 if RTX is an insn that must be scheduled together
2742 : with the preceding insn. */
2743 : #define SCHED_GROUP_P(RTX) \
2744 : (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \
2745 : JUMP_INSN, CALL_INSN)->in_struct)
2746 :
2747 : /* For a SET rtx, SET_DEST is the place that is set
2748 : and SET_SRC is the value it is set to. */
2749 : #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER)
2750 : #define SET_SRC(RTX) XCEXP (RTX, 1, SET)
2751 : #define SET_IS_RETURN_P(RTX) \
2752 : (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump)
2753 :
2754 : /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
2755 : #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
2756 : #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
2757 :
2758 : /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
2759 : conditionally executing the code on, COND_EXEC_CODE is the code
2760 : to execute if the condition is true. */
2761 : #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
2762 : #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
2763 :
2764 : /* 1 if RTX is a symbol_ref that addresses this function's rtl
2765 : constants pool. */
2766 : #define CONSTANT_POOL_ADDRESS_P(RTX) \
2767 : (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
2768 :
2769 : /* 1 if RTX is a symbol_ref that addresses a value in the file's
2770 : tree constant pool. This information is private to varasm.cc. */
2771 : #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
2772 : (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \
2773 : (RTX), SYMBOL_REF)->frame_related)
2774 :
2775 : /* Used if RTX is a symbol_ref, for machine-specific purposes. */
2776 : #define SYMBOL_REF_FLAG(RTX) \
2777 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
2778 :
2779 : /* 1 if RTX is a symbol_ref that has been the library function in
2780 : emit_library_call. */
2781 : #define SYMBOL_REF_USED(RTX) \
2782 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
2783 :
2784 : /* 1 if RTX is a symbol_ref for a weak symbol. */
2785 : #define SYMBOL_REF_WEAK(RTX) \
2786 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val)
2787 :
2788 : /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or
2789 : SYMBOL_REF_CONSTANT. */
2790 : #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1)
2791 :
2792 : /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant
2793 : pool symbol. */
2794 : #define SET_SYMBOL_REF_DECL(RTX, DECL) \
2795 : (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL))
2796 :
2797 : /* The tree (decl or constant) associated with the symbol, or null. */
2798 : #define SYMBOL_REF_DECL(RTX) \
2799 : (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1))
2800 :
2801 : /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */
2802 : #define SET_SYMBOL_REF_CONSTANT(RTX, C) \
2803 : (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C))
2804 :
2805 : /* The rtx constant pool entry for a symbol, or null. */
2806 : #define SYMBOL_REF_CONSTANT(RTX) \
2807 : (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL)
2808 :
2809 : /* A set of flags on a symbol_ref that are, in some respects, redundant with
2810 : information derivable from the tree decl associated with this symbol.
2811 : Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
2812 : decl. In some cases this is a bug. But beyond that, it's nice to cache
2813 : this information to avoid recomputing it. Finally, this allows space for
2814 : the target to store more than one bit of information, as with
2815 : SYMBOL_REF_FLAG. */
2816 : #define SYMBOL_REF_FLAGS(RTX) \
2817 : (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \
2818 : ->u2.symbol_ref_flags)
2819 :
2820 : /* These flags are common enough to be defined for all targets. They
2821 : are computed by the default version of targetm.encode_section_info. */
2822 :
2823 : /* Set if this symbol is a function. */
2824 : #define SYMBOL_FLAG_FUNCTION (1 << 0)
2825 : #define SYMBOL_REF_FUNCTION_P(RTX) \
2826 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
2827 : /* Set if targetm.binds_local_p is true. */
2828 : #define SYMBOL_FLAG_LOCAL (1 << 1)
2829 : #define SYMBOL_REF_LOCAL_P(RTX) \
2830 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
2831 : /* Set if targetm.in_small_data_p is true. */
2832 : #define SYMBOL_FLAG_SMALL (1 << 2)
2833 : #define SYMBOL_REF_SMALL_P(RTX) \
2834 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
2835 : /* The three-bit field at [5:3] is true for TLS variables; use
2836 : SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
2837 : #define SYMBOL_FLAG_TLS_SHIFT 3
2838 : #define SYMBOL_REF_TLS_MODEL(RTX) \
2839 : ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
2840 : /* Set if this symbol is not defined in this translation unit. */
2841 : #define SYMBOL_FLAG_EXTERNAL (1 << 6)
2842 : #define SYMBOL_REF_EXTERNAL_P(RTX) \
2843 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
2844 : /* Set if this symbol has a block_symbol structure associated with it. */
2845 : #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7)
2846 : #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \
2847 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0)
2848 : /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies
2849 : SYMBOL_REF_HAS_BLOCK_INFO_P. */
2850 : #define SYMBOL_FLAG_ANCHOR (1 << 8)
2851 : #define SYMBOL_REF_ANCHOR_P(RTX) \
2852 : ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0)
2853 :
2854 : /* Subsequent bits are available for the target to use. */
2855 : #define SYMBOL_FLAG_MACH_DEP_SHIFT 9
2856 : #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
2857 :
2858 : /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block
2859 : structure to which the symbol belongs, or NULL if it has not been
2860 : assigned a block. */
2861 : #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block)
2862 :
2863 : /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from
2864 : the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if
2865 : RTX has not yet been assigned to a block, or it has not been given an
2866 : offset within that block. */
2867 : #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset)
2868 :
2869 : /* True if RTX is flagged to be a scheduling barrier. */
2870 : #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \
2871 : (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil)
2872 :
2873 : /* Indicate whether the machine has any sort of auto increment addressing.
2874 : If not, we can avoid checking for REG_INC notes. */
2875 :
2876 : #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
2877 : || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \
2878 : || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \
2879 : || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG))
2880 : #define AUTO_INC_DEC 1
2881 : #else
2882 : #define AUTO_INC_DEC 0
2883 : #endif
2884 :
2885 : /* Define a macro to look for REG_INC notes,
2886 : but save time on machines where they never exist. */
2887 :
2888 : #if AUTO_INC_DEC
2889 : #define FIND_REG_INC_NOTE(INSN, REG) \
2890 : ((REG) != NULL_RTX && REG_P ((REG)) \
2891 : ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
2892 : : find_reg_note ((INSN), REG_INC, (REG)))
2893 : #else
2894 : #define FIND_REG_INC_NOTE(INSN, REG) 0
2895 : #endif
2896 :
2897 : #ifndef HAVE_PRE_INCREMENT
2898 : #define HAVE_PRE_INCREMENT 0
2899 : #endif
2900 :
2901 : #ifndef HAVE_PRE_DECREMENT
2902 : #define HAVE_PRE_DECREMENT 0
2903 : #endif
2904 :
2905 : #ifndef HAVE_POST_INCREMENT
2906 : #define HAVE_POST_INCREMENT 0
2907 : #endif
2908 :
2909 : #ifndef HAVE_POST_DECREMENT
2910 : #define HAVE_POST_DECREMENT 0
2911 : #endif
2912 :
2913 : #ifndef HAVE_POST_MODIFY_DISP
2914 : #define HAVE_POST_MODIFY_DISP 0
2915 : #endif
2916 :
2917 : #ifndef HAVE_POST_MODIFY_REG
2918 : #define HAVE_POST_MODIFY_REG 0
2919 : #endif
2920 :
2921 : #ifndef HAVE_PRE_MODIFY_DISP
2922 : #define HAVE_PRE_MODIFY_DISP 0
2923 : #endif
2924 :
2925 : #ifndef HAVE_PRE_MODIFY_REG
2926 : #define HAVE_PRE_MODIFY_REG 0
2927 : #endif
2928 :
2929 :
2930 : /* Some architectures do not have complete pre/post increment/decrement
2931 : instruction sets, or only move some modes efficiently. These macros
2932 : allow us to tune autoincrement generation. */
2933 :
2934 : #ifndef USE_LOAD_POST_INCREMENT
2935 : #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2936 : #endif
2937 :
2938 : #ifndef USE_LOAD_POST_DECREMENT
2939 : #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2940 : #endif
2941 :
2942 : #ifndef USE_LOAD_PRE_INCREMENT
2943 : #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2944 : #endif
2945 :
2946 : #ifndef USE_LOAD_PRE_DECREMENT
2947 : #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2948 : #endif
2949 :
2950 : #ifndef USE_STORE_POST_INCREMENT
2951 : #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
2952 : #endif
2953 :
2954 : #ifndef USE_STORE_POST_DECREMENT
2955 : #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
2956 : #endif
2957 :
2958 : #ifndef USE_STORE_PRE_INCREMENT
2959 : #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
2960 : #endif
2961 :
2962 : #ifndef USE_STORE_PRE_DECREMENT
2963 : #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
2964 : #endif
2965 :
2966 : /* Nonzero when we are generating CONCATs. */
2967 : extern int generating_concat_p;
2968 :
2969 : /* Nonzero when we are expanding trees to RTL. */
2970 : extern int currently_expanding_to_rtl;
2971 :
2972 : /* Generally useful functions. */
2973 :
2974 : #ifndef GENERATOR_FILE
2975 : /* Return the cost of SET X. SPEED_P is true if optimizing for speed
2976 : rather than size. */
2977 :
2978 : inline int
2979 43662246 : set_rtx_cost (rtx x, bool speed_p)
2980 : {
2981 43224668 : return rtx_cost (x, VOIDmode, INSN, 4, speed_p);
2982 : }
2983 :
2984 : /* Like set_rtx_cost, but return both the speed and size costs in C. */
2985 :
2986 : inline void
2987 2288334 : get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c)
2988 : {
2989 2161865 : get_full_rtx_cost (x, VOIDmode, INSN, 4, c);
2990 : }
2991 :
2992 : /* Return the cost of moving X into a register, relative to the cost
2993 : of a register move. SPEED_P is true if optimizing for speed rather
2994 : than size. */
2995 :
2996 : inline int
2997 2829096325 : set_src_cost (rtx x, machine_mode mode, bool speed_p)
2998 : {
2999 2827816310 : return rtx_cost (x, mode, SET, 1, speed_p);
3000 : }
3001 :
3002 : /* Like set_src_cost, but return both the speed and size costs in C. */
3003 :
3004 : inline void
3005 368 : get_full_set_src_cost (rtx x, machine_mode mode, struct full_rtx_costs *c)
3006 : {
3007 368 : get_full_rtx_cost (x, mode, SET, 1, c);
3008 : }
3009 : #endif
3010 :
3011 : /* A convenience macro to validate the arguments of a zero_extract
3012 : expression. It determines whether SIZE lies inclusively within
3013 : [1, RANGE], POS lies inclusively within between [0, RANGE - 1]
3014 : and the sum lies inclusively within [1, RANGE]. RANGE must be
3015 : >= 1, but SIZE and POS may be negative. */
3016 : #define EXTRACT_ARGS_IN_RANGE(SIZE, POS, RANGE) \
3017 : (IN_RANGE ((POS), 0, (unsigned HOST_WIDE_INT) (RANGE) - 1) \
3018 : && IN_RANGE ((SIZE), 1, (unsigned HOST_WIDE_INT) (RANGE) \
3019 : - (unsigned HOST_WIDE_INT)(POS)))
3020 :
3021 : /* In explow.cc */
3022 : extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, machine_mode);
3023 : extern poly_int64 trunc_int_for_mode (poly_int64, machine_mode);
3024 : extern rtx plus_constant (machine_mode, rtx, poly_int64, bool = false);
3025 : extern HOST_WIDE_INT get_stack_check_protect (void);
3026 :
3027 : /* In rtl.cc */
3028 : extern rtx rtx_alloc (RTX_CODE CXX_MEM_STAT_INFO);
3029 : inline rtx
3030 2750063772 : rtx_init (rtx rt, RTX_CODE code)
3031 : {
3032 2750063772 : memset (rt, 0, RTX_HDR_SIZE);
3033 2750063772 : PUT_CODE (rt, code);
3034 2747933522 : return rt;
3035 : }
3036 : #define rtx_alloca(code) \
3037 : rtx_init ((rtx) alloca (RTX_CODE_SIZE ((code))), (code))
3038 : extern rtx rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL, int);
3039 : #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ)
3040 : #define const_wide_int_alloc(NWORDS) \
3041 : rtx_alloc_v (CONST_WIDE_INT, \
3042 : (sizeof (struct hwivec_def) \
3043 : + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \
3044 :
3045 : extern rtvec rtvec_alloc (size_t);
3046 : extern rtvec shallow_copy_rtvec (rtvec);
3047 : extern bool shared_const_p (const_rtx);
3048 : extern rtx copy_rtx (rtx);
3049 : extern enum rtx_code classify_insn (rtx);
3050 : extern void dump_rtx_statistics (void);
3051 :
3052 : /* In emit-rtl.cc */
3053 :
3054 : /* Opcodes used in the bytecode generated by genemit.cc. */
3055 : enum class expand_opcode {
3056 : /* NULL_RTX. */
3057 : NO_RTX,
3058 :
3059 : /* A (match_operand N) or (match_dup N). Followed by the operand number. */
3060 : MATCH_OPERAND,
3061 :
3062 : /* A (match_operator N) or (match_op_dup N) that preserves the original mode.
3063 : Followed by the operand number. */
3064 : MATCH_OPERATOR,
3065 :
3066 : /* A (match_operator N) or (match_op_dup N) that overrides the original mode.
3067 : Followed by the new mode and by the operand number. */
3068 : MATCH_OPERATOR_WITH_MODE,
3069 :
3070 : /* A (match_parallel N) or (match_par_dup N). Followed by the operand
3071 : number. */
3072 : MATCH_PARALLEL,
3073 :
3074 : /* A (clobber (reg:M R)). Followed by M and R. */
3075 : CLOBBER_REG,
3076 :
3077 : /* FIRST_CODE + X represents a normal rtx with code X. */
3078 : FIRST_CODE
3079 : };
3080 :
3081 : extern rtx expand_rtx (const uint8_t *, rtx *);
3082 : extern rtx_insn *complete_seq (const uint8_t *, rtx *);
3083 : extern rtx copy_rtx_if_shared (rtx);
3084 :
3085 : /* In rtl.cc */
3086 : extern unsigned int rtx_size (const_rtx);
3087 : extern rtx shallow_copy_rtx (const_rtx CXX_MEM_STAT_INFO);
3088 :
3089 : typedef bool (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *,
3090 : rtx *, rtx *);
3091 : extern bool rtx_equal_p (const_rtx, const_rtx,
3092 : rtx_equal_p_callback_function = NULL);
3093 :
3094 : extern bool rtvec_all_equal_p (const_rtvec);
3095 : extern bool rtvec_series_p (rtvec, int);
3096 :
3097 : /* Return true if X is a vector constant with a duplicated element value. */
3098 :
3099 : inline bool
3100 309332445 : const_vec_duplicate_p (const_rtx x)
3101 : {
3102 309332445 : return (GET_CODE (x) == CONST_VECTOR
3103 780313 : && CONST_VECTOR_NPATTERNS (x) == 1
3104 754550 : && CONST_VECTOR_DUPLICATE_P (x));
3105 : }
3106 :
3107 : /* Return true if X is a vector constant with a duplicated element value.
3108 : Store the duplicated element in *ELT if so. */
3109 :
3110 : template <typename T>
3111 : inline bool
3112 308068567 : const_vec_duplicate_p (T x, T *elt)
3113 : {
3114 312051660 : if (const_vec_duplicate_p (x))
3115 : {
3116 711295 : *elt = CONST_VECTOR_ENCODED_ELT (x, 0);
3117 32009 : return true;
3118 : }
3119 : return false;
3120 : }
3121 :
3122 : /* Return true if X is a vector with a duplicated element value, either
3123 : constant or nonconstant. Store the duplicated element in *ELT if so. */
3124 :
3125 : template <typename T>
3126 : inline bool
3127 115582950 : vec_duplicate_p (T x, T *elt)
3128 : {
3129 115582950 : if (GET_CODE (x) == VEC_DUPLICATE
3130 200810 : && !VECTOR_MODE_P (GET_MODE (XEXP (x, 0))))
3131 : {
3132 200803 : *elt = XEXP (x, 0);
3133 200803 : return true;
3134 : }
3135 115582950 : return const_vec_duplicate_p (x, elt);
3136 : }
3137 :
3138 : /* If X is a vector constant with a duplicated element value, return that
3139 : element value, otherwise return X. */
3140 :
3141 : template <typename T>
3142 : inline T
3143 1263540 : unwrap_const_vec_duplicate (T x)
3144 : {
3145 1276796 : if (const_vec_duplicate_p (x))
3146 13256 : x = CONST_VECTOR_ELT (x, 0);
3147 1263540 : return x;
3148 : }
3149 :
3150 : /* In emit-rtl.cc. */
3151 : extern wide_int const_vector_int_elt (const_rtx, unsigned int);
3152 : extern rtx const_vector_elt (const_rtx, unsigned int);
3153 : extern bool const_vec_series_p_1 (const_rtx, rtx *, rtx *);
3154 :
3155 : /* Return true if X is an integer constant vector that contains a linear
3156 : series of the form:
3157 :
3158 : { B, B + S, B + 2 * S, B + 3 * S, ... }
3159 :
3160 : for a nonzero S. Store B and S in *BASE_OUT and *STEP_OUT on success. */
3161 :
3162 : inline bool
3163 4103659 : const_vec_series_p (const_rtx x, rtx *base_out, rtx *step_out)
3164 : {
3165 4103659 : if (GET_CODE (x) == CONST_VECTOR
3166 6466 : && CONST_VECTOR_NPATTERNS (x) == 1
3167 4109436 : && !CONST_VECTOR_DUPLICATE_P (x))
3168 5777 : return const_vec_series_p_1 (x, base_out, step_out);
3169 : return false;
3170 : }
3171 :
3172 : /* Return true if X is a vector that contains a linear series of the
3173 : form:
3174 :
3175 : { B, B + S, B + 2 * S, B + 3 * S, ... }
3176 :
3177 : where B and S are constant or nonconstant. Store B and S in
3178 : *BASE_OUT and *STEP_OUT on success. */
3179 :
3180 : inline bool
3181 4104123 : vec_series_p (const_rtx x, rtx *base_out, rtx *step_out)
3182 : {
3183 4104123 : if (GET_CODE (x) == VEC_SERIES)
3184 : {
3185 464 : *base_out = XEXP (x, 0);
3186 464 : *step_out = XEXP (x, 1);
3187 464 : return true;
3188 : }
3189 4103659 : return const_vec_series_p (x, base_out, step_out);
3190 : }
3191 :
3192 : /* Return true if CONST_VECTORs X and Y, which are known to have the same mode,
3193 : also have the same encoding. This means that they are equal whenever their
3194 : operands are equal. */
3195 :
3196 : inline bool
3197 : same_vector_encodings_p (const_rtx x, const_rtx y)
3198 : {
3199 : /* Don't be fussy about the encoding of constant-length vectors,
3200 : since XVECEXP (X, 0) and XVECEXP (Y, 0) list all the elements anyway. */
3201 : if (poly_uint64 (CONST_VECTOR_NUNITS (x)).is_constant ())
3202 : return true;
3203 :
3204 : return (CONST_VECTOR_NPATTERNS (x) == CONST_VECTOR_NPATTERNS (y)
3205 : && (CONST_VECTOR_NELTS_PER_PATTERN (x)
3206 : == CONST_VECTOR_NELTS_PER_PATTERN (y)));
3207 : }
3208 :
3209 : /* Return the unpromoted (outer) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3210 :
3211 : inline scalar_int_mode
3212 7 : subreg_unpromoted_mode (rtx x)
3213 : {
3214 7 : gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x));
3215 7 : return as_a <scalar_int_mode> (GET_MODE (x));
3216 : }
3217 :
3218 : /* Return the promoted (inner) mode of SUBREG_PROMOTED_VAR_P subreg X. */
3219 :
3220 : inline scalar_int_mode
3221 14 : subreg_promoted_mode (rtx x)
3222 : {
3223 14 : gcc_checking_assert (SUBREG_PROMOTED_VAR_P (x));
3224 14 : return as_a <scalar_int_mode> (GET_MODE (SUBREG_REG (x)));
3225 : }
3226 :
3227 : /* In emit-rtl.cc */
3228 : extern rtvec gen_rtvec_v (int, rtx *);
3229 : extern rtvec gen_rtvec_v (int, rtx_insn **);
3230 : extern rtx gen_reg_rtx (machine_mode);
3231 : extern rtx gen_rtx_REG_offset (rtx, machine_mode, unsigned int, poly_int64);
3232 : extern rtx gen_reg_rtx_offset (rtx, machine_mode, int);
3233 : extern rtx gen_reg_rtx_and_attrs (rtx);
3234 : extern rtx_code_label *gen_label_rtx (void);
3235 : extern rtx gen_lowpart_common (machine_mode, rtx);
3236 :
3237 : /* In cse.cc */
3238 : extern rtx gen_lowpart_if_possible (machine_mode, rtx);
3239 :
3240 : /* In emit-rtl.cc */
3241 : extern rtx gen_highpart (machine_mode, rtx);
3242 : extern rtx gen_highpart_mode (machine_mode, machine_mode, rtx);
3243 : extern rtx operand_subword (rtx, poly_uint64, int, machine_mode);
3244 :
3245 : /* In emit-rtl.cc */
3246 : extern rtx operand_subword_force (rtx, poly_uint64, machine_mode);
3247 : extern bool subreg_lowpart_p (const_rtx);
3248 : extern poly_uint64 subreg_size_lowpart_offset (poly_uint64, poly_uint64);
3249 :
3250 : /* Return true if a subreg of mode OUTERMODE would only access part of
3251 : an inner register with mode INNERMODE. The other bits of the inner
3252 : register would then be "don't care" on read. The behavior for writes
3253 : depends on REGMODE_NATURAL_SIZE; bits in the same REGMODE_NATURAL_SIZE-d
3254 : chunk would be clobbered but other bits would be preserved. */
3255 :
3256 : inline bool
3257 955479314 : partial_subreg_p (machine_mode outermode, machine_mode innermode)
3258 : {
3259 : /* Modes involved in a subreg must be ordered. In particular, we must
3260 : always know at compile time whether the subreg is paradoxical. */
3261 937646897 : poly_int64 outer_prec = GET_MODE_PRECISION (outermode);
3262 955479314 : poly_int64 inner_prec = GET_MODE_PRECISION (innermode);
3263 955479314 : gcc_checking_assert (ordered_p (outer_prec, inner_prec));
3264 955389337 : return maybe_lt (outer_prec, inner_prec);
3265 : }
3266 :
3267 : /* Likewise return true if X is a subreg that is smaller than the inner
3268 : register. Use read_modify_subreg_p to test whether writing to such
3269 : a subreg preserves any part of the inner register. */
3270 :
3271 : inline bool
3272 61913847 : partial_subreg_p (const_rtx x)
3273 : {
3274 61491762 : if (GET_CODE (x) != SUBREG)
3275 : return false;
3276 11699878 : return partial_subreg_p (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3277 : }
3278 :
3279 : /* Return true if a subreg with the given outer and inner modes is
3280 : paradoxical. */
3281 :
3282 : inline bool
3283 300943540 : paradoxical_subreg_p (machine_mode outermode, machine_mode innermode)
3284 : {
3285 : /* Modes involved in a subreg must be ordered. In particular, we must
3286 : always know at compile time whether the subreg is paradoxical. */
3287 257045739 : poly_int64 outer_prec = GET_MODE_PRECISION (outermode);
3288 300943529 : poly_int64 inner_prec = GET_MODE_PRECISION (innermode);
3289 300943540 : gcc_checking_assert (ordered_p (outer_prec, inner_prec));
3290 300295332 : return maybe_gt (outer_prec, inner_prec);
3291 : }
3292 :
3293 : /* Return true if X is a paradoxical subreg, false otherwise. */
3294 :
3295 : inline bool
3296 514128541 : paradoxical_subreg_p (const_rtx x)
3297 : {
3298 503196793 : if (GET_CODE (x) != SUBREG)
3299 : return false;
3300 63155239 : return paradoxical_subreg_p (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3301 : }
3302 :
3303 : /* Return the SUBREG_BYTE for an OUTERMODE lowpart of an INNERMODE value. */
3304 :
3305 : inline poly_uint64
3306 230052409 : subreg_lowpart_offset (machine_mode outermode, machine_mode innermode)
3307 : {
3308 460104818 : return subreg_size_lowpart_offset (GET_MODE_SIZE (outermode),
3309 230052409 : GET_MODE_SIZE (innermode));
3310 : }
3311 :
3312 : /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3313 : return the smaller of the two modes if they are different sizes,
3314 : otherwise return the outer mode. */
3315 :
3316 : inline machine_mode
3317 13621476 : narrower_subreg_mode (machine_mode outermode, machine_mode innermode)
3318 : {
3319 13621476 : return paradoxical_subreg_p (outermode, innermode) ? innermode : outermode;
3320 : }
3321 :
3322 : /* Given that a subreg has outer mode OUTERMODE and inner mode INNERMODE,
3323 : return the mode that is big enough to hold both the outer and inner
3324 : values. Prefer the outer mode in the event of a tie. */
3325 :
3326 : inline machine_mode
3327 149034581 : wider_subreg_mode (machine_mode outermode, machine_mode innermode)
3328 : {
3329 144768070 : return partial_subreg_p (outermode, innermode) ? innermode : outermode;
3330 : }
3331 :
3332 : /* Likewise for subreg X. */
3333 :
3334 : inline machine_mode
3335 9400773 : wider_subreg_mode (const_rtx x)
3336 : {
3337 14075538 : return wider_subreg_mode (GET_MODE (x), GET_MODE (SUBREG_REG (x)));
3338 : }
3339 :
3340 : extern poly_uint64 subreg_size_highpart_offset (poly_uint64, poly_uint64);
3341 :
3342 : /* Return the SUBREG_BYTE for an OUTERMODE highpart of an INNERMODE value. */
3343 :
3344 : inline poly_uint64
3345 43594 : subreg_highpart_offset (machine_mode outermode, machine_mode innermode)
3346 : {
3347 87188 : return subreg_size_highpart_offset (GET_MODE_SIZE (outermode),
3348 43594 : GET_MODE_SIZE (innermode));
3349 : }
3350 :
3351 : extern poly_int64 byte_lowpart_offset (machine_mode, machine_mode);
3352 : extern poly_int64 subreg_memory_offset (machine_mode, machine_mode,
3353 : poly_uint64);
3354 : extern poly_int64 subreg_memory_offset (const_rtx);
3355 : extern rtx make_safe_from (rtx, rtx);
3356 : extern rtx convert_memory_address_addr_space_1 (scalar_int_mode, rtx,
3357 : addr_space_t, bool, bool);
3358 : extern rtx convert_memory_address_addr_space (scalar_int_mode, rtx,
3359 : addr_space_t);
3360 : #define convert_memory_address(to_mode,x) \
3361 : convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC)
3362 : extern const char *get_insn_name (int);
3363 : extern rtx_insn *get_last_insn_anywhere (void);
3364 : extern rtx_insn *get_first_nonnote_insn (void);
3365 : extern rtx_insn *get_last_nonnote_insn (void);
3366 : extern void start_sequence (void);
3367 : extern void push_to_sequence (rtx_insn *);
3368 : extern void push_to_sequence2 (rtx_insn *, rtx_insn *);
3369 : extern rtx_insn *end_sequence (void);
3370 : #if TARGET_SUPPORTS_WIDE_INT == 0
3371 : extern double_int rtx_to_double_int (const_rtx);
3372 : #endif
3373 : extern void cwi_output_hex (FILE *, const_rtx);
3374 : #if TARGET_SUPPORTS_WIDE_INT == 0
3375 : extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
3376 : machine_mode);
3377 : #endif
3378 : extern rtx immed_wide_int_const (const poly_wide_int_ref &, machine_mode);
3379 :
3380 : /* In varasm.cc */
3381 : extern rtx force_const_mem (machine_mode, rtx);
3382 :
3383 : /* In varasm.cc */
3384 :
3385 : struct function;
3386 : extern rtx get_pool_constant (const_rtx);
3387 : extern rtx get_pool_constant_mark (rtx, bool *);
3388 : extern fixed_size_mode get_pool_mode (const_rtx);
3389 : extern rtx simplify_subtraction (rtx);
3390 : extern void decide_function_section (tree);
3391 :
3392 : /* In emit-rtl.cc */
3393 : extern rtx_insn *emit_insn_before (rtx, rtx_insn *);
3394 : extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block);
3395 : extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, location_t);
3396 : extern rtx_jump_insn *emit_jump_insn_before (rtx, rtx_insn *);
3397 : extern rtx_jump_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *);
3398 : extern rtx_jump_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *,
3399 : location_t);
3400 : extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *);
3401 : extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *);
3402 : extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, location_t);
3403 : extern rtx_insn *emit_debug_insn_before (rtx, rtx_insn *);
3404 : extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx_insn *);
3405 : extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx_insn *, location_t);
3406 : extern rtx_barrier *emit_barrier_before (rtx_insn *);
3407 : extern rtx_code_label *emit_label_before (rtx_code_label *, rtx_insn *);
3408 : extern rtx_note *emit_note_before (enum insn_note, rtx_insn *);
3409 : extern rtx_insn *emit_insn_after (rtx, rtx_insn *);
3410 : extern rtx_insn *emit_insn_after_noloc (rtx, rtx_insn *, basic_block);
3411 : extern rtx_insn *emit_insn_after_setloc (rtx, rtx_insn *, location_t);
3412 : extern rtx_jump_insn *emit_jump_insn_after (rtx, rtx_insn *);
3413 : extern rtx_jump_insn *emit_jump_insn_after_noloc (rtx, rtx_insn *);
3414 : extern rtx_jump_insn *emit_jump_insn_after_setloc (rtx, rtx_insn *, location_t);
3415 : extern rtx_insn *emit_call_insn_after (rtx, rtx_insn *);
3416 : extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx_insn *);
3417 : extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx_insn *, location_t);
3418 : extern rtx_insn *emit_debug_insn_after (rtx, rtx_insn *);
3419 : extern rtx_insn *emit_debug_insn_after_noloc (rtx, rtx_insn *);
3420 : extern rtx_insn *emit_debug_insn_after_setloc (rtx, rtx_insn *, location_t);
3421 : extern rtx_barrier *emit_barrier_after (rtx_insn *);
3422 : extern rtx_insn *emit_label_after (rtx_insn *, rtx_insn *);
3423 : extern rtx_note *emit_note_after (enum insn_note, rtx_insn *);
3424 : extern rtx_insn *emit_insn (rtx);
3425 : extern rtx_insn *emit_debug_insn (rtx);
3426 : extern rtx_insn *emit_jump_insn (rtx);
3427 : extern rtx_insn *emit_likely_jump_insn (rtx);
3428 : extern rtx_insn *emit_unlikely_jump_insn (rtx);
3429 : extern rtx_insn *emit_call_insn (rtx);
3430 : extern rtx_code_label *emit_label (rtx);
3431 : extern rtx_jump_table_data *emit_jump_table_data (rtx);
3432 : extern rtx_barrier *emit_barrier (void);
3433 : extern rtx_note *emit_note (enum insn_note);
3434 : extern rtx_note *emit_note_copy (rtx_note *);
3435 : extern rtx_insn *gen_clobber (rtx);
3436 : extern rtx_insn *emit_clobber (rtx);
3437 : extern rtx_insn *gen_use (rtx);
3438 : extern rtx_insn *emit_use (rtx);
3439 : extern rtx_insn *make_insn_raw (rtx);
3440 : extern void add_function_usage_to (rtx, rtx);
3441 : extern rtx_call_insn *last_call_insn (void);
3442 : extern rtx_insn *previous_insn (rtx_insn *);
3443 : extern rtx_insn *next_insn (rtx_insn *);
3444 : extern rtx_insn *prev_nonnote_insn (rtx_insn *);
3445 : extern rtx_insn *next_nonnote_insn (rtx_insn *);
3446 : extern rtx_insn *prev_nondebug_insn (rtx_insn *);
3447 : extern rtx_insn *next_nondebug_insn (rtx_insn *);
3448 : extern rtx_insn *prev_nonnote_nondebug_insn (rtx_insn *);
3449 : extern rtx_insn *prev_nonnote_nondebug_insn_bb (rtx_insn *);
3450 : extern rtx_insn *next_nonnote_nondebug_insn (rtx_insn *);
3451 : extern rtx_insn *next_nonnote_nondebug_insn_bb (rtx_insn *);
3452 : extern rtx_insn *prev_real_insn (rtx_insn *);
3453 : extern rtx_insn *next_real_insn (rtx_insn *);
3454 : extern rtx_insn *prev_real_nondebug_insn (rtx_insn *);
3455 : extern rtx_insn *next_real_nondebug_insn (rtx);
3456 : extern rtx_insn *prev_active_insn (rtx_insn *);
3457 : extern rtx_insn *next_active_insn (rtx_insn *);
3458 : extern bool active_insn_p (const rtx_insn *);
3459 :
3460 : /* In emit-rtl.cc */
3461 : extern int insn_line (const rtx_insn *);
3462 : extern const char * insn_file (const rtx_insn *);
3463 : extern tree insn_scope (const rtx_insn *);
3464 : extern expanded_location insn_location (const rtx_insn *);
3465 : extern int insn_discriminator (const rtx_insn *);
3466 : extern location_t prologue_location, epilogue_location;
3467 :
3468 : /* In jump.cc */
3469 : extern enum rtx_code reverse_condition (enum rtx_code);
3470 : extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code);
3471 : extern enum rtx_code swap_condition (enum rtx_code);
3472 : extern enum rtx_code unsigned_condition (enum rtx_code);
3473 : extern enum rtx_code signed_condition (enum rtx_code);
3474 : extern void mark_jump_label (rtx, rtx_insn *, int);
3475 :
3476 : /* Return true if integer comparison operator CODE interprets its operands
3477 : as unsigned. */
3478 :
3479 : inline bool
3480 4757771 : unsigned_condition_p (enum rtx_code code)
3481 : {
3482 4757771 : return unsigned_condition (code) == code;
3483 : }
3484 :
3485 : /* In jump.cc */
3486 : extern rtx_insn *delete_related_insns (rtx);
3487 :
3488 : /* In recog.cc */
3489 : extern rtx *find_constant_term_loc (rtx *);
3490 :
3491 : /* In emit-rtl.cc */
3492 : extern rtx_insn *try_split (rtx, rtx_insn *, int);
3493 :
3494 : /* In insn-recog.cc (generated by genrecog). */
3495 : extern rtx_insn *split_insns (rtx, rtx_insn *);
3496 :
3497 : /* In simplify-rtx.cc */
3498 :
3499 : /* A class that records the context in which a simplification
3500 : is being mode. */
3501 70254141 : class simplify_context
3502 : {
3503 : public:
3504 : rtx simplify_unary_operation (rtx_code, machine_mode, rtx, machine_mode);
3505 : rtx simplify_binary_operation (rtx_code, machine_mode, rtx, rtx);
3506 : rtx simplify_ternary_operation (rtx_code, machine_mode, machine_mode,
3507 : rtx, rtx, rtx);
3508 : rtx simplify_relational_operation (rtx_code, machine_mode, machine_mode,
3509 : rtx, rtx);
3510 : rtx simplify_ior_with_common_term (machine_mode, rtx, rtx);
3511 : rtx simplify_subreg (machine_mode, rtx, machine_mode, poly_uint64);
3512 :
3513 : rtx lowpart_subreg (machine_mode, rtx, machine_mode);
3514 :
3515 : rtx simplify_merge_mask (rtx, rtx, int);
3516 :
3517 : rtx simplify_gen_unary (rtx_code, machine_mode, rtx, machine_mode);
3518 : rtx simplify_gen_binary (rtx_code, machine_mode, rtx, rtx);
3519 : rtx simplify_gen_ternary (rtx_code, machine_mode, machine_mode,
3520 : rtx, rtx, rtx);
3521 : rtx simplify_gen_relational (rtx_code, machine_mode, machine_mode, rtx, rtx);
3522 : rtx simplify_gen_subreg (machine_mode, rtx, machine_mode, poly_uint64);
3523 : rtx simplify_gen_vec_select (rtx, unsigned int);
3524 :
3525 : /* Tracks the level of MEM nesting for the value being simplified:
3526 : 0 means the value is not in a MEM, >0 means it is. This is needed
3527 : because the canonical representation of multiplication is different
3528 : inside a MEM than outside. */
3529 : unsigned int mem_depth = 0;
3530 :
3531 : /* Tracks number of simplify_associative_operation calls performed during
3532 : outermost simplify* call. */
3533 : unsigned int assoc_count = 0;
3534 :
3535 : /* Limit for the above number, return NULL from
3536 : simplify_associative_operation after we reach that assoc_count. */
3537 : static const unsigned int max_assoc_count = 64;
3538 :
3539 : private:
3540 : rtx simplify_truncation (machine_mode, rtx, machine_mode);
3541 : rtx simplify_byte_swapping_operation (rtx_code, machine_mode, rtx, rtx);
3542 : rtx simplify_associative_operation (rtx_code, machine_mode, rtx, rtx);
3543 : rtx simplify_distributive_operation (rtx_code, machine_mode, rtx, rtx);
3544 : rtx simplify_logical_relational_operation (rtx_code, machine_mode, rtx, rtx,
3545 : bool = false);
3546 : rtx simplify_binary_operation_series (rtx_code, machine_mode, rtx, rtx);
3547 : rtx simplify_distribute_over_subregs (rtx_code, machine_mode, rtx, rtx);
3548 : rtx simplify_shift_const_int (rtx_code, machine_mode, rtx, unsigned int);
3549 : rtx simplify_plus_minus (rtx_code, machine_mode, rtx, rtx);
3550 : rtx simplify_cond_clz_ctz (rtx, rtx_code, rtx, rtx);
3551 :
3552 : rtx simplify_unary_operation_1 (rtx_code, machine_mode, rtx);
3553 : rtx simplify_binary_operation_1 (rtx_code, machine_mode, rtx, rtx, rtx, rtx);
3554 : rtx simplify_ternary_operation_1 (rtx_code, machine_mode, machine_mode,
3555 : rtx, rtx, rtx);
3556 : rtx simplify_relational_operation_1 (rtx_code, machine_mode, machine_mode,
3557 : rtx, rtx);
3558 : };
3559 :
3560 : inline rtx
3561 19335950 : simplify_unary_operation (rtx_code code, machine_mode mode, rtx op,
3562 : machine_mode op_mode)
3563 : {
3564 19335674 : return simplify_context ().simplify_unary_operation (code, mode, op,
3565 : op_mode);
3566 : }
3567 :
3568 : inline rtx
3569 207698521 : simplify_binary_operation (rtx_code code, machine_mode mode, rtx op0, rtx op1)
3570 : {
3571 207697077 : return simplify_context ().simplify_binary_operation (code, mode, op0, op1);
3572 : }
3573 :
3574 : inline rtx
3575 35501948 : simplify_ternary_operation (rtx_code code, machine_mode mode,
3576 : machine_mode op0_mode, rtx op0, rtx op1, rtx op2)
3577 : {
3578 35501948 : return simplify_context ().simplify_ternary_operation (code, mode, op0_mode,
3579 106017 : op0, op1, op2);
3580 : }
3581 :
3582 : inline rtx
3583 63446764 : simplify_relational_operation (rtx_code code, machine_mode mode,
3584 : machine_mode op_mode, rtx op0, rtx op1)
3585 : {
3586 63446764 : return simplify_context ().simplify_relational_operation (code, mode,
3587 225725 : op_mode, op0, op1);
3588 : }
3589 :
3590 : inline rtx
3591 23244560 : simplify_subreg (machine_mode outermode, rtx op, machine_mode innermode,
3592 : poly_uint64 byte)
3593 : {
3594 23244560 : return simplify_context ().simplify_subreg (outermode, op, innermode, byte);
3595 : }
3596 :
3597 : inline rtx
3598 847929 : simplify_gen_unary (rtx_code code, machine_mode mode, rtx op,
3599 : machine_mode op_mode)
3600 : {
3601 1710226 : return simplify_context ().simplify_gen_unary (code, mode, op, op_mode);
3602 : }
3603 :
3604 : inline rtx
3605 37933884 : simplify_gen_binary (rtx_code code, machine_mode mode, rtx op0, rtx op1)
3606 : {
3607 89307952 : return simplify_context ().simplify_gen_binary (code, mode, op0, op1);
3608 : }
3609 :
3610 : inline rtx
3611 2195071 : simplify_gen_ternary (rtx_code code, machine_mode mode, machine_mode op0_mode,
3612 : rtx op0, rtx op1, rtx op2)
3613 : {
3614 2195071 : return simplify_context ().simplify_gen_ternary (code, mode, op0_mode,
3615 : op0, op1, op2);
3616 : }
3617 :
3618 : inline rtx
3619 2981012 : simplify_gen_relational (rtx_code code, machine_mode mode,
3620 : machine_mode op_mode, rtx op0, rtx op1)
3621 : {
3622 5422031 : return simplify_context ().simplify_gen_relational (code, mode, op_mode,
3623 : op0, op1);
3624 : }
3625 :
3626 : inline rtx
3627 10853592 : simplify_gen_subreg (machine_mode outermode, rtx op, machine_mode innermode,
3628 : poly_uint64 byte)
3629 : {
3630 10540126 : return simplify_context ().simplify_gen_subreg (outermode, op,
3631 : innermode, byte);
3632 : }
3633 :
3634 : inline rtx
3635 675835 : simplify_gen_vec_select (rtx op, unsigned int index)
3636 : {
3637 675835 : return simplify_context ().simplify_gen_vec_select (op, index);
3638 : }
3639 :
3640 : inline rtx
3641 30329272 : lowpart_subreg (machine_mode outermode, rtx op, machine_mode innermode)
3642 : {
3643 31605302 : return simplify_context ().lowpart_subreg (outermode, op, innermode);
3644 : }
3645 :
3646 : extern rtx simplify_const_unary_operation (enum rtx_code, machine_mode,
3647 : rtx, machine_mode);
3648 : extern rtx simplify_const_binary_operation (enum rtx_code, machine_mode,
3649 : rtx, rtx);
3650 : extern rtx simplify_const_relational_operation (enum rtx_code,
3651 : machine_mode, rtx, rtx);
3652 : extern rtx simplify_replace_fn_rtx (rtx, const_rtx,
3653 : rtx (*fn) (rtx, const_rtx, void *), void *);
3654 : extern rtx simplify_replace_rtx (rtx, const_rtx, rtx);
3655 : extern rtx simplify_rtx (const_rtx);
3656 : extern rtx avoid_constant_pool_reference (rtx);
3657 : extern rtx delegitimize_mem_from_attrs (rtx);
3658 : extern bool mode_signbit_p (machine_mode, const_rtx);
3659 : extern bool val_signbit_p (machine_mode, unsigned HOST_WIDE_INT);
3660 : extern bool val_signbit_known_set_p (machine_mode,
3661 : unsigned HOST_WIDE_INT);
3662 : extern bool val_signbit_known_clear_p (machine_mode,
3663 : unsigned HOST_WIDE_INT);
3664 : extern bool reverse_rotate_by_imm_p (machine_mode, unsigned int, rtx);
3665 :
3666 : /* In reginfo.cc */
3667 : extern machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
3668 : const predefined_function_abi *);
3669 : extern const HARD_REG_SET &simplifiable_subregs (const subreg_shape &);
3670 :
3671 : /* In emit-rtl.cc */
3672 : extern rtx set_for_reg_notes (rtx);
3673 : extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
3674 : extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx);
3675 : extern void set_insn_deleted (rtx_insn *);
3676 :
3677 : /* Functions in rtlanal.cc */
3678 :
3679 : extern rtx single_set_2 (const rtx_insn *, const_rtx);
3680 : extern rtx simple_regno_set (rtx, unsigned int);
3681 : extern bool contains_symbol_ref_p (const_rtx);
3682 : extern bool contains_symbolic_reference_p (const_rtx);
3683 : extern bool contains_constant_pool_address_p (const_rtx);
3684 : extern void add_auto_inc_notes (rtx_insn *, rtx);
3685 : extern bool single_output_fused_pair_p (rtx_insn *);
3686 :
3687 : /* Handle the cheap and common cases inline for performance. */
3688 :
3689 6963211758 : inline rtx single_set (const rtx_insn *insn)
3690 : {
3691 6963211758 : if (!INSN_P (insn))
3692 : return NULL_RTX;
3693 :
3694 6840288838 : if (GET_CODE (PATTERN (insn)) == SET)
3695 : return PATTERN (insn);
3696 :
3697 : /* Defer to the more expensive case. */
3698 1976805593 : return single_set_2 (insn, PATTERN (insn));
3699 : }
3700 :
3701 : extern scalar_int_mode get_address_mode (rtx mem);
3702 : extern bool rtx_addr_can_trap_p (const_rtx);
3703 : extern bool nonzero_address_p (const_rtx);
3704 : extern bool rtx_unstable_p (const_rtx);
3705 : extern bool rtx_varies_p (const_rtx, bool);
3706 : extern bool rtx_addr_varies_p (const_rtx, bool);
3707 : extern tree get_call_fndecl (const rtx_insn *);
3708 : extern HOST_WIDE_INT get_integer_term (const_rtx);
3709 : extern rtx get_related_value (const_rtx);
3710 : extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT);
3711 : extern void split_const (rtx, rtx *, rtx *);
3712 : extern rtx strip_offset (rtx, poly_int64 *);
3713 : extern poly_int64 get_args_size (const_rtx);
3714 : extern bool unsigned_reg_p (rtx);
3715 : extern bool reg_mentioned_p (const_rtx, const_rtx);
3716 : extern int count_occurrences (const_rtx, const_rtx, int);
3717 : extern bool reg_referenced_p (const_rtx, const_rtx);
3718 : extern bool reg_used_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3719 : extern bool reg_set_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3720 : extern int commutative_operand_precedence (rtx);
3721 : extern bool swap_commutative_operands_p (rtx, rtx);
3722 : extern bool modified_between_p (const_rtx, const rtx_insn *, const rtx_insn *);
3723 : extern bool no_labels_between_p (const rtx_insn *, const rtx_insn *);
3724 : extern bool modified_in_p (const_rtx, const_rtx);
3725 : extern bool reg_set_p (const_rtx, const_rtx);
3726 : extern bool multiple_sets (const_rtx);
3727 : extern bool set_noop_p (const_rtx);
3728 : extern bool noop_move_p (const rtx_insn *);
3729 : extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *);
3730 : extern bool reg_overlap_mentioned_p (const_rtx, const_rtx);
3731 : extern const_rtx set_of (const_rtx, const_rtx);
3732 : extern void record_hard_reg_sets (rtx, const_rtx, void *);
3733 : extern void record_hard_reg_uses (rtx *, void *);
3734 : extern void find_all_hard_regs (const_rtx, HARD_REG_SET *);
3735 : extern void find_all_hard_reg_sets (const rtx_insn *, HARD_REG_SET *, bool);
3736 : extern void note_pattern_stores (const_rtx,
3737 : void (*) (rtx, const_rtx, void *), void *);
3738 : extern void note_stores (const rtx_insn *,
3739 : void (*) (rtx, const_rtx, void *), void *);
3740 : extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
3741 : extern bool dead_or_set_p (const rtx_insn *, const_rtx);
3742 : extern bool dead_or_set_regno_p (const rtx_insn *, unsigned int);
3743 : extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx);
3744 : extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int);
3745 : extern rtx find_reg_equal_equiv_note (const_rtx);
3746 : extern rtx find_constant_src (const rtx_insn *);
3747 : extern bool find_reg_fusage (const_rtx, enum rtx_code, const_rtx);
3748 : extern bool find_regno_fusage (const_rtx, enum rtx_code, unsigned int);
3749 : extern rtx alloc_reg_note (enum reg_note, rtx, rtx);
3750 : extern void add_reg_note (rtx, enum reg_note, rtx);
3751 : extern void add_int_reg_note (rtx_insn *, enum reg_note, int);
3752 : extern void add_args_size_note (rtx_insn *, poly_int64);
3753 : extern void add_shallow_copy_of_reg_note (rtx_insn *, rtx);
3754 : extern rtx duplicate_reg_note (rtx);
3755 : extern void remove_note (rtx_insn *, const_rtx);
3756 : extern bool remove_reg_equal_equiv_notes (rtx_insn *, bool = false);
3757 : extern void remove_reg_equal_equiv_notes_for_regno (unsigned int);
3758 : extern bool side_effects_p (const_rtx);
3759 : extern bool volatile_refs_p (const_rtx);
3760 : extern bool volatile_insn_p (const_rtx);
3761 : extern bool may_trap_p_1 (const_rtx, unsigned);
3762 : extern bool may_trap_p (const_rtx);
3763 : extern bool may_trap_or_fault_p (const_rtx);
3764 : extern bool can_throw_internal (const_rtx);
3765 : extern bool can_throw_external (const_rtx);
3766 : extern bool insn_could_throw_p (const_rtx);
3767 : extern bool insn_nothrow_p (const_rtx);
3768 : extern bool can_nonlocal_goto (const rtx_insn *);
3769 : extern void copy_reg_eh_region_note_forward (rtx, rtx_insn *, rtx);
3770 : extern void copy_reg_eh_region_note_backward (rtx, rtx_insn *, rtx);
3771 : extern rtx replace_rtx (rtx, rtx, rtx, bool = false);
3772 : extern void replace_label (rtx *, rtx, rtx, bool);
3773 : extern void replace_label_in_insn (rtx_insn *, rtx_insn *, rtx_insn *, bool);
3774 : extern bool rtx_referenced_p (const_rtx, const_rtx);
3775 : extern bool tablejump_p (const rtx_insn *, rtx_insn **, rtx_jump_table_data **);
3776 : extern rtx tablejump_casesi_pattern (const rtx_insn *insn);
3777 : extern bool computed_jump_p (const rtx_insn *);
3778 : extern bool tls_referenced_p (const_rtx);
3779 : extern bool contains_mem_rtx_p (rtx x);
3780 : extern bool register_asm_p (const_rtx);
3781 :
3782 : /* Overload for refers_to_regno_p for checking a single register. */
3783 : inline bool
3784 143281155 : refers_to_regno_p (unsigned int regnum, const_rtx x, rtx* loc = NULL)
3785 : {
3786 143281155 : return refers_to_regno_p (regnum, regnum + 1, x, loc);
3787 : }
3788 :
3789 : /* Callback for for_each_inc_dec, to process the autoinc operation OP
3790 : within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is
3791 : NULL. The callback is passed the same opaque ARG passed to
3792 : for_each_inc_dec. Return zero to continue looking for other
3793 : autoinc operations or any other value to interrupt the traversal and
3794 : return that value to the caller of for_each_inc_dec. */
3795 : typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src,
3796 : rtx srcoff, void *arg);
3797 : extern int for_each_inc_dec (rtx, for_each_inc_dec_fn, void *arg);
3798 :
3799 : extern rtx regno_use_in (unsigned int, rtx);
3800 : extern bool auto_inc_p (const_rtx);
3801 : extern bool in_insn_list_p (const rtx_insn_list *, const rtx_insn *);
3802 : extern void remove_node_from_insn_list (const rtx_insn *, rtx_insn_list **);
3803 : extern bool loc_mentioned_in_p (rtx *, const_rtx);
3804 : extern rtx_insn *find_first_parameter_load (rtx_insn *, rtx_insn *);
3805 : extern bool keep_with_call_p (const rtx_insn *);
3806 : extern bool label_is_jump_target_p (const_rtx, const rtx_insn *);
3807 : extern int pattern_cost (rtx, bool);
3808 : extern int insn_cost (rtx_insn *, bool);
3809 : extern unsigned seq_cost (const rtx_insn *, bool);
3810 :
3811 : /* Given an insn and condition, return a canonical description of
3812 : the test being made. */
3813 : extern rtx canonicalize_condition (rtx_insn *, rtx, int, rtx_insn **, rtx,
3814 : int, int);
3815 :
3816 : /* Given a JUMP_INSN, return a canonical description of the test
3817 : being made. */
3818 : extern rtx get_condition (rtx_insn *, rtx_insn **, int, int);
3819 :
3820 : /* Information about a subreg of a hard register. */
3821 : struct subreg_info
3822 : {
3823 : /* Offset of first hard register involved in the subreg. */
3824 : int offset;
3825 : /* Number of hard registers involved in the subreg. In the case of
3826 : a paradoxical subreg, this is the number of registers that would
3827 : be modified by writing to the subreg; some of them may be don't-care
3828 : when reading from the subreg. */
3829 : int nregs;
3830 : /* Whether this subreg can be represented as a hard reg with the new
3831 : mode (by adding OFFSET to the original hard register). */
3832 : bool representable_p;
3833 : };
3834 :
3835 : extern void subreg_get_info (unsigned int, machine_mode,
3836 : poly_uint64, machine_mode,
3837 : struct subreg_info *);
3838 :
3839 : /* lists.cc */
3840 :
3841 : extern void free_EXPR_LIST_list (rtx_expr_list **);
3842 : extern void free_INSN_LIST_list (rtx_insn_list **);
3843 : extern void free_EXPR_LIST_node (rtx);
3844 : extern void free_INSN_LIST_node (rtx);
3845 : extern rtx_insn_list *alloc_INSN_LIST (rtx, rtx);
3846 : extern rtx_insn_list *copy_INSN_LIST (rtx_insn_list *);
3847 : extern rtx_insn_list *concat_INSN_LIST (rtx_insn_list *, rtx_insn_list *);
3848 : extern rtx_expr_list *alloc_EXPR_LIST (int, rtx, rtx);
3849 : extern void remove_free_INSN_LIST_elem (rtx_insn *, rtx_insn_list **);
3850 : extern rtx remove_list_elem (rtx, rtx *);
3851 : extern rtx_insn *remove_free_INSN_LIST_node (rtx_insn_list **);
3852 : extern rtx remove_free_EXPR_LIST_node (rtx_expr_list **);
3853 :
3854 :
3855 : /* reginfo.cc */
3856 :
3857 : /* Resize reg info. */
3858 : extern bool resize_reg_info (void);
3859 : /* Free up register info memory. */
3860 : extern void free_reg_info (void);
3861 : extern void init_subregs_of_mode (void);
3862 : extern void finish_subregs_of_mode (void);
3863 : extern void reginfo_cc_finalize (void);
3864 :
3865 : /* recog.cc */
3866 : extern rtx extract_asm_operands (rtx);
3867 : extern int asm_noperands (const_rtx);
3868 : extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
3869 : machine_mode *, location_t *);
3870 : extern void get_referenced_operands (const char *, bool *, unsigned int);
3871 :
3872 : extern enum reg_class reg_preferred_class (int);
3873 : extern enum reg_class reg_alternate_class (int);
3874 : extern enum reg_class reg_allocno_class (int);
3875 : extern void setup_reg_classes (int, enum reg_class, enum reg_class,
3876 : enum reg_class);
3877 :
3878 : extern void split_all_insns (void);
3879 : extern void split_all_insns_noflow (void);
3880 :
3881 : #define MAX_SAVED_CONST_INT 64
3882 : extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
3883 :
3884 : #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
3885 : #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
3886 : #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
3887 : #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
3888 : extern GTY(()) rtx const_true_rtx;
3889 :
3890 : extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE];
3891 :
3892 : /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
3893 : same as VOIDmode. */
3894 :
3895 : #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
3896 :
3897 : /* Likewise, for the constants 1 and 2 and -1. */
3898 :
3899 : #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
3900 : #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
3901 : #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)])
3902 :
3903 : extern GTY(()) rtx pc_rtx;
3904 : extern GTY(()) rtx ret_rtx;
3905 : extern GTY(()) rtx simple_return_rtx;
3906 : extern GTY(()) rtx_insn *invalid_insn_rtx;
3907 :
3908 : /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
3909 : is used to represent the frame pointer. This is because the
3910 : hard frame pointer and the automatic variables are separated by an amount
3911 : that cannot be determined until after register allocation. We can assume
3912 : that in this case ELIMINABLE_REGS will be defined, one action of which
3913 : will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
3914 : #ifndef HARD_FRAME_POINTER_REGNUM
3915 : #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
3916 : #endif
3917 :
3918 : #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER
3919 : #define HARD_FRAME_POINTER_IS_FRAME_POINTER \
3920 : (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM)
3921 : #endif
3922 :
3923 : #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER
3924 : #define HARD_FRAME_POINTER_IS_ARG_POINTER \
3925 : (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM)
3926 : #endif
3927 :
3928 : /* Index labels for global_rtl. */
3929 : enum global_rtl_index
3930 : {
3931 : GR_STACK_POINTER,
3932 : GR_FRAME_POINTER,
3933 : /* For register elimination to work properly these hard_frame_pointer_rtx,
3934 : frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
3935 : the same register. */
3936 : #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
3937 : GR_ARG_POINTER = GR_FRAME_POINTER,
3938 : #endif
3939 : #if HARD_FRAME_POINTER_IS_FRAME_POINTER
3940 : GR_HARD_FRAME_POINTER = GR_FRAME_POINTER,
3941 : #else
3942 : GR_HARD_FRAME_POINTER,
3943 : #endif
3944 : #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
3945 : #if HARD_FRAME_POINTER_IS_ARG_POINTER
3946 : GR_ARG_POINTER = GR_HARD_FRAME_POINTER,
3947 : #else
3948 : GR_ARG_POINTER,
3949 : #endif
3950 : #endif
3951 : GR_VIRTUAL_INCOMING_ARGS,
3952 : GR_VIRTUAL_STACK_ARGS,
3953 : GR_VIRTUAL_STACK_DYNAMIC,
3954 : GR_VIRTUAL_OUTGOING_ARGS,
3955 : GR_VIRTUAL_CFA,
3956 : GR_VIRTUAL_PREFERRED_STACK_BOUNDARY,
3957 :
3958 : GR_MAX
3959 : };
3960 :
3961 : /* Target-dependent globals. */
3962 : struct GTY(()) target_rtl {
3963 : /* All references to the hard registers in global_rtl_index go through
3964 : these unique rtl objects. On machines where the frame-pointer and
3965 : arg-pointer are the same register, they use the same unique object.
3966 :
3967 : After register allocation, other rtl objects which used to be pseudo-regs
3968 : may be clobbered to refer to the frame-pointer register.
3969 : But references that were originally to the frame-pointer can be
3970 : distinguished from the others because they contain frame_pointer_rtx.
3971 :
3972 : When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little
3973 : tricky: until register elimination has taken place hard_frame_pointer_rtx
3974 : should be used if it is being set, and frame_pointer_rtx otherwise. After
3975 : register elimination hard_frame_pointer_rtx should always be used.
3976 : On machines where the two registers are same (most) then these are the
3977 : same. */
3978 : rtx x_global_rtl[GR_MAX];
3979 :
3980 : /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */
3981 : rtx x_pic_offset_table_rtx;
3982 :
3983 : /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM).
3984 : This is used to implement __builtin_return_address for some machines;
3985 : see for instance the MIPS port. */
3986 : rtx x_return_address_pointer_rtx;
3987 :
3988 : /* Commonly used RTL for hard registers. These objects are not
3989 : necessarily unique, so we allocate them separately from global_rtl.
3990 : They are initialized once per compilation unit, then copied into
3991 : regno_reg_rtx at the beginning of each function. */
3992 : rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER];
3993 :
3994 : /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */
3995 : rtx x_top_of_stack[MAX_MACHINE_MODE];
3996 :
3997 : /* Static hunks of RTL used by the aliasing code; these are treated
3998 : as persistent to avoid unnecessary RTL allocations. */
3999 : rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER];
4000 :
4001 : /* The default memory attributes for each mode. */
4002 : class mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE];
4003 :
4004 : /* Track if RTL has been initialized. */
4005 : bool target_specific_initialized;
4006 : };
4007 :
4008 : extern GTY(()) struct target_rtl default_target_rtl;
4009 : #if SWITCHABLE_TARGET
4010 : extern struct target_rtl *this_target_rtl;
4011 : #else
4012 : #define this_target_rtl (&default_target_rtl)
4013 : #endif
4014 :
4015 : #define global_rtl \
4016 : (this_target_rtl->x_global_rtl)
4017 : #define pic_offset_table_rtx \
4018 : (this_target_rtl->x_pic_offset_table_rtx)
4019 : #define return_address_pointer_rtx \
4020 : (this_target_rtl->x_return_address_pointer_rtx)
4021 : #define top_of_stack \
4022 : (this_target_rtl->x_top_of_stack)
4023 : #define mode_mem_attrs \
4024 : (this_target_rtl->x_mode_mem_attrs)
4025 : #define static_reg_base_value \
4026 : (this_target_rtl->x_static_reg_base_value)
4027 :
4028 : /* All references to certain hard regs, except those created
4029 : by allocating pseudo regs into them (when that's possible),
4030 : go through these unique rtx objects. */
4031 : #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
4032 : #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
4033 : #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
4034 : #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
4035 :
4036 : #ifndef GENERATOR_FILE
4037 : /* Return the attributes of a MEM rtx. */
4038 : inline const class mem_attrs *
4039 11459711633 : get_mem_attrs (const_rtx x)
4040 : {
4041 11459711633 : class mem_attrs *attrs;
4042 :
4043 3812476066 : attrs = MEM_ATTRS (x);
4044 9658102519 : if (!attrs)
4045 521755874 : attrs = mode_mem_attrs[(int) GET_MODE (x)];
4046 9622978842 : return attrs;
4047 : }
4048 : #endif
4049 :
4050 : /* Include the RTL generation functions. */
4051 :
4052 : #ifndef GENERATOR_FILE
4053 : #include "genrtl.h"
4054 : #undef gen_rtx_ASM_INPUT
4055 : #define gen_rtx_ASM_INPUT(MODE, ARG0) \
4056 : gen_rtx_fmt_sL (ASM_INPUT, (MODE), (ARG0), 0)
4057 : #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \
4058 : gen_rtx_fmt_sL (ASM_INPUT, (MODE), (ARG0), (LOC))
4059 : #endif
4060 :
4061 : /* There are some RTL codes that require special attention; the
4062 : generation functions included above do the raw handling. If you
4063 : add to this list, modify special_rtx in gengenrtl.cc as well. */
4064 :
4065 : extern rtx_expr_list *gen_rtx_EXPR_LIST (machine_mode, rtx, rtx);
4066 : extern rtx_insn_list *gen_rtx_INSN_LIST (machine_mode, rtx, rtx);
4067 : extern rtx_insn *
4068 : gen_rtx_INSN (machine_mode mode, rtx_insn *prev_insn, rtx_insn *next_insn,
4069 : basic_block bb, rtx pattern, location_t location, int code,
4070 : rtx reg_notes);
4071 : extern rtx gen_rtx_CONST_INT (machine_mode, HOST_WIDE_INT);
4072 : extern rtx gen_rtx_CONST_VECTOR (machine_mode, rtvec);
4073 : extern void set_mode_and_regno (rtx, machine_mode, unsigned int);
4074 : extern rtx init_raw_REG (rtx, machine_mode, unsigned int);
4075 : extern rtx gen_raw_REG (machine_mode, unsigned int);
4076 : #define alloca_raw_REG(mode, regno) \
4077 : init_raw_REG (rtx_alloca (REG), (mode), (regno))
4078 : extern rtx gen_rtx_REG (machine_mode, unsigned int);
4079 : extern rtx gen_rtx_SUBREG (machine_mode, rtx, poly_uint64);
4080 : extern rtx gen_rtx_MEM (machine_mode, rtx);
4081 : extern rtx gen_rtx_VAR_LOCATION (machine_mode, tree, rtx,
4082 : enum var_init_status);
4083 :
4084 : #ifdef GENERATOR_FILE
4085 : #define PUT_MODE(RTX, MODE) PUT_MODE_RAW (RTX, MODE)
4086 : #else
4087 : inline void
4088 1377536330 : PUT_MODE (rtx x, machine_mode mode)
4089 : {
4090 1377536330 : if (REG_P (x))
4091 342527878 : set_mode_and_regno (x, mode, REGNO (x));
4092 : else
4093 1035008452 : PUT_MODE_RAW (x, mode);
4094 1377536330 : }
4095 : #endif
4096 :
4097 : #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N))
4098 :
4099 : /* Virtual registers are used during RTL generation to refer to locations into
4100 : the stack frame when the actual location isn't known until RTL generation
4101 : is complete. The routine instantiate_virtual_regs replaces these with
4102 : the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
4103 : a constant. */
4104 :
4105 : #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
4106 :
4107 : /* This points to the first word of the incoming arguments passed on the stack,
4108 : either by the caller or by the callee when pretending it was passed by the
4109 : caller. */
4110 :
4111 : #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
4112 :
4113 : #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
4114 :
4115 : /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
4116 : variable on the stack. Otherwise, it points to the first variable on
4117 : the stack. */
4118 :
4119 : #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
4120 :
4121 : #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
4122 :
4123 : /* This points to the location of dynamically-allocated memory on the stack
4124 : immediately after the stack pointer has been adjusted by the amount
4125 : desired. */
4126 :
4127 : #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
4128 :
4129 : #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
4130 :
4131 : /* This points to the location in the stack at which outgoing arguments should
4132 : be written when the stack is pre-pushed (arguments pushed using push
4133 : insns always use sp). */
4134 :
4135 : #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
4136 :
4137 : #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
4138 :
4139 : /* This points to the Canonical Frame Address of the function. This
4140 : should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
4141 : but is calculated relative to the arg pointer for simplicity; the
4142 : frame pointer nor stack pointer are necessarily fixed relative to
4143 : the CFA until after reload. */
4144 :
4145 : #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
4146 :
4147 : #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
4148 :
4149 : #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
4150 :
4151 : /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT
4152 : when finalized. */
4153 :
4154 : #define virtual_preferred_stack_boundary_rtx \
4155 : (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY])
4156 :
4157 : #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \
4158 : ((FIRST_VIRTUAL_REGISTER) + 5)
4159 :
4160 : #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5)
4161 :
4162 : /* Nonzero if REGNUM is a pointer into the stack frame. */
4163 : #define REGNO_PTR_FRAME_P(REGNUM) \
4164 : ((REGNUM) == STACK_POINTER_REGNUM \
4165 : || (REGNUM) == FRAME_POINTER_REGNUM \
4166 : || (REGNUM) == HARD_FRAME_POINTER_REGNUM \
4167 : || (REGNUM) == ARG_POINTER_REGNUM \
4168 : || VIRTUAL_REGISTER_NUM_P (REGNUM))
4169 :
4170 : /* REGNUM never really appearing in the INSN stream. */
4171 : #define INVALID_REGNUM (~(unsigned int) 0)
4172 :
4173 : /* REGNUM for which no debug information can be generated. */
4174 : #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1)
4175 :
4176 : extern rtx output_constant_def (tree, int);
4177 : extern rtx lookup_constant_def (tree);
4178 :
4179 : /* Nonzero after end of reload pass.
4180 : Set to 1 or 0 by reload1.cc. */
4181 :
4182 : extern int reload_completed;
4183 :
4184 : /* Nonzero after thread_prologue_and_epilogue_insns has run. */
4185 : extern int epilogue_completed;
4186 :
4187 : /* Set to true once the first split pass after register allocation has
4188 : been run. Ports can treat that split pass as a "lowering" pass,
4189 : with some instructions only being valid before the lowering
4190 : and others only being valid after the lowering.
4191 :
4192 : One use of this variable is to cope with address calculations during
4193 : register allocation. The register allocator needs to be able to perform
4194 : address arithmetic (such as addition) at arbitrary points in the program,
4195 : regardless of whether the condition-code flags are live at that point.
4196 : If a target cannot add without clobbering the condition-code flags,
4197 : it must either (1) hide the condition-code flags entirely from RTL
4198 : or (2) ensure that the condition-code flags are never live before
4199 : or during register allocation.
4200 :
4201 : (2) requires a boundary between "the condition-code flags are never live"
4202 : and "the condition-code flags might be live". reload_completed can be
4203 : used for this purpose, provided that all clobbers of the CC register
4204 : are explicit before and during register allocation.
4205 :
4206 : However, if the condition-code flags are never live before or during
4207 : register allocation, there is no real need for patterns to have an explicit
4208 : clobber of the flags at that point. Not having a clobber would allow more
4209 : recog attempts to succeed, both before and during register allocation.
4210 :
4211 : post_ra_split_completed is an alternative boundary to reload_completed.
4212 : It allows sets and uses of the condition-code flags, such as individual
4213 : comparison and jump instructions, to be introduced in the first split pass
4214 : after register allocation, while also allowing new implicit clobbers of
4215 : the condition-code flags to be introduced at any time before that point.
4216 :
4217 : Ports that use post_ra_split_completed for this purpose would have an
4218 : "unlowered" form with the following properties:
4219 :
4220 : (a) The condition-code flags are never live between instructions.
4221 : (That is, they are never defined by one instruction and used
4222 : by another instruction.)
4223 :
4224 : (b) As a consequence, new clobbers of the condition-code flags
4225 : can be introduced at any time.
4226 :
4227 : (c) RTL instruction patterns (such as addition) can omit clobbers of the
4228 : condition-code flags even if the flags are in fact clobbered.
4229 :
4230 : In contrast, the "lowered" form would have these properties:
4231 :
4232 : (d) The condition-code flags can be live between instructions.
4233 : That is, RTL instruction patterns can set the condition-code flags
4234 : or use the condition-code flags.
4235 :
4236 : (e) All clobbers of the condition-code flags must be explicit in the RTL
4237 : instruction patterns.
4238 :
4239 : Instructions covered by (c) would require !post_ra_split_completed
4240 : and would need to be split into instructions that satisfy (d) or (e).
4241 : Instructions covered by (d) would require post_ra_split_completed,
4242 : so that they are not accidentally matched before lowering has taken
4243 : place. */
4244 : extern bool post_ra_split_completed;
4245 :
4246 : /* Set to 1 while reload_as_needed is operating.
4247 : Required by some machines to handle any generated moves differently. */
4248 :
4249 : extern int reload_in_progress;
4250 :
4251 : /* Set to true while in IRA. */
4252 : extern bool ira_in_progress;
4253 :
4254 : /* Set to true while in LRA. */
4255 : extern bool lra_in_progress;
4256 :
4257 : /* This macro indicates whether you may create a new
4258 : pseudo-register. */
4259 :
4260 : #define can_create_pseudo_p() (!reload_in_progress && !reload_completed)
4261 :
4262 : #ifdef STACK_REGS
4263 : /* Nonzero after end of regstack pass.
4264 : Set to 1 or 0 by reg-stack.cc. */
4265 : extern int regstack_completed;
4266 : #endif
4267 :
4268 : /* If this is nonzero, we do not bother generating VOLATILE
4269 : around volatile memory references, and we are willing to
4270 : output indirect addresses. If cse is to follow, we reject
4271 : indirect addresses so a useful potential cse is generated;
4272 : if it is used only once, instruction combination will produce
4273 : the same indirect address eventually. */
4274 : extern int cse_not_expected;
4275 :
4276 : /* Translates rtx code to tree code, for those codes needed by
4277 : real_arithmetic. The function returns an int because the caller may not
4278 : know what `enum tree_code' means. */
4279 :
4280 : extern int rtx_to_tree_code (enum rtx_code);
4281 :
4282 : /* In cse.cc */
4283 : extern int delete_trivially_dead_insns (rtx_insn *, int);
4284 : extern bool exp_equiv_p (const_rtx, const_rtx, int, bool);
4285 :
4286 : typedef bool (*hash_rtx_callback_function) (const_rtx, machine_mode, rtx *,
4287 : machine_mode *);
4288 : extern unsigned hash_rtx (const_rtx, machine_mode, int *, int *,
4289 : bool, hash_rtx_callback_function = NULL);
4290 :
4291 : /* In dse.cc */
4292 : extern bool check_for_inc_dec (rtx_insn *insn);
4293 :
4294 : /* In jump.cc */
4295 : extern bool comparison_dominates_p (enum rtx_code, enum rtx_code);
4296 : extern bool jump_to_label_p (const rtx_insn *);
4297 : extern bool condjump_p (const rtx_insn *);
4298 : extern bool any_condjump_p (const rtx_insn *);
4299 : extern bool any_uncondjump_p (const rtx_insn *);
4300 : extern rtx pc_set (const rtx_insn *);
4301 : extern rtx condjump_label (const rtx_insn *);
4302 : extern bool simplejump_p (const rtx_insn *);
4303 : extern bool returnjump_p (const rtx_insn *);
4304 : extern bool eh_returnjump_p (rtx_insn *);
4305 : extern bool onlyjump_p (const rtx_insn *);
4306 : extern bool invert_jump_1 (rtx_jump_insn *, rtx);
4307 : extern bool invert_jump (rtx_jump_insn *, rtx, int);
4308 : extern bool rtx_renumbered_equal_p (const_rtx, const_rtx);
4309 : extern int true_regnum (const_rtx);
4310 : extern unsigned int reg_or_subregno (const_rtx);
4311 : extern bool redirect_jump_1 (rtx_insn *, rtx);
4312 : extern void redirect_jump_2 (rtx_jump_insn *, rtx, rtx, int, int);
4313 : extern bool redirect_jump (rtx_jump_insn *, rtx, int);
4314 : extern void rebuild_jump_labels (rtx_insn *);
4315 : extern void rebuild_jump_labels_chain (rtx_insn *);
4316 : extern rtx reversed_comparison (const_rtx, machine_mode);
4317 : extern enum rtx_code reversed_comparison_code (const_rtx, const rtx_insn *);
4318 : extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx,
4319 : const_rtx, const rtx_insn *);
4320 : extern void delete_for_peephole (rtx_insn *, rtx_insn *);
4321 : extern bool condjump_in_parallel_p (const rtx_insn *);
4322 :
4323 : /* In emit-rtl.cc. */
4324 : extern int max_reg_num (void);
4325 : extern int max_label_num (void);
4326 : extern int get_first_label_num (void);
4327 : extern void maybe_set_first_label_num (rtx_code_label *);
4328 : extern void delete_insns_since (rtx_insn *);
4329 : extern void mark_reg_pointer (rtx, int);
4330 : extern void mark_user_reg (rtx);
4331 : extern void reset_used_flags (rtx);
4332 : extern void set_used_flags (rtx);
4333 : extern void reorder_insns (rtx_insn *, rtx_insn *, rtx_insn *);
4334 : extern void reorder_insns_nobb (rtx_insn *, rtx_insn *, rtx_insn *);
4335 : extern int get_max_insn_count (void);
4336 : extern bool in_sequence_p (void);
4337 : extern void init_emit (void);
4338 : extern void init_emit_regs (void);
4339 : extern void init_derived_machine_modes (void);
4340 : extern void init_emit_once (void);
4341 : extern void push_topmost_sequence (void);
4342 : extern void pop_topmost_sequence (void);
4343 : extern void set_new_first_and_last_insn (rtx_insn *, rtx_insn *);
4344 : extern void unshare_all_rtl (void);
4345 : extern void unshare_all_rtl_again (rtx_insn *);
4346 : extern void unshare_all_rtl_in_chain (rtx_insn *);
4347 : extern void verify_rtl_sharing (void);
4348 : extern void add_insn (rtx_insn *);
4349 : extern void add_insn_before (rtx_insn *, rtx_insn *, basic_block);
4350 : extern void add_insn_after (rtx_insn *, rtx_insn *, basic_block);
4351 : extern void remove_insn (rtx_insn *);
4352 : extern rtx_insn *emit (rtx, bool = true);
4353 : extern void emit_insn_at_entry (rtx);
4354 : extern rtx gen_lowpart_SUBREG (machine_mode, rtx);
4355 : extern rtx gen_const_mem (machine_mode, rtx);
4356 : extern rtx gen_frame_mem (machine_mode, rtx);
4357 : extern rtx gen_tmp_stack_mem (machine_mode, rtx);
4358 : extern bool validate_subreg (machine_mode, machine_mode,
4359 : const_rtx, poly_uint64);
4360 :
4361 : /* In combine.cc */
4362 : extern unsigned int extended_count (const_rtx, machine_mode, bool);
4363 : extern rtx remove_death (unsigned int, rtx_insn *);
4364 : extern rtx make_compound_operation (rtx, enum rtx_code);
4365 :
4366 : /* In sched-rgn.cc. */
4367 : extern void schedule_insns (void);
4368 :
4369 : /* In sched-ebb.cc. */
4370 : extern void schedule_ebbs (void);
4371 :
4372 : /* In sel-sched-dump.cc. */
4373 : extern void sel_sched_fix_param (const char *param, const char *val);
4374 :
4375 : /* In print-rtl.cc */
4376 : extern const char *print_rtx_head;
4377 : extern void debug (const rtx_def &ref);
4378 : extern void debug (const rtx_def *ptr);
4379 : extern void debug_rtx (const_rtx);
4380 : extern void debug_rtx_list (const rtx_insn *, int);
4381 : extern void debug_rtx_range (const rtx_insn *, const rtx_insn *);
4382 : extern const rtx_insn *debug_rtx_find (const rtx_insn *, int);
4383 : extern void print_mem_expr (FILE *, const_tree);
4384 : extern void print_rtl (FILE *, const_rtx);
4385 : extern void print_simple_rtl (FILE *, const_rtx);
4386 : extern void print_rtl_single (FILE *, const_rtx);
4387 : extern void print_rtl_single_with_indent (FILE *, const_rtx, int);
4388 : extern void print_inline_rtx (FILE *, const_rtx, int);
4389 :
4390 : /* In stmt.cc */
4391 : extern void expand_null_return (void);
4392 : extern void expand_naked_return (void);
4393 : extern void emit_jump (rtx);
4394 :
4395 : /* Memory operation built-ins differ by return value. Mapping
4396 : of the enum values is following:
4397 : - RETURN_BEGIN - return destination, e.g. memcpy
4398 : - RETURN_END - return destination + n, e.g. mempcpy
4399 : - RETURN_END_MINUS_ONE - return a pointer to the terminating
4400 : null byte of the string, e.g. strcpy
4401 : */
4402 :
4403 : enum memop_ret
4404 : {
4405 : RETURN_BEGIN,
4406 : RETURN_END,
4407 : RETURN_END_MINUS_ONE
4408 : };
4409 :
4410 : /* In expr.cc */
4411 : extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
4412 : unsigned int, memop_ret);
4413 : extern poly_int64 find_args_size_adjust (rtx_insn *);
4414 : extern poly_int64 fixup_args_size_notes (rtx_insn *, rtx_insn *, poly_int64);
4415 :
4416 : /* In expmed.cc */
4417 : extern void init_expmed (void);
4418 : extern void expand_inc (rtx, rtx);
4419 : extern void expand_dec (rtx, rtx);
4420 :
4421 : /* In lower-subreg.cc */
4422 : extern void init_lower_subreg (void);
4423 :
4424 : /* In gcse.cc */
4425 : extern bool can_copy_p (machine_mode);
4426 : extern bool can_assign_to_reg_without_clobbers_p (rtx, machine_mode);
4427 : extern rtx_insn *prepare_copy_insn (rtx, rtx);
4428 :
4429 : /* In cprop.cc */
4430 : extern rtx fis_get_condition (rtx_insn *);
4431 :
4432 : /* In ira.cc */
4433 : extern HARD_REG_SET eliminable_regset;
4434 : extern void mark_elimination (int, int);
4435 :
4436 : /* In reginfo.cc */
4437 : extern bool reg_classes_intersect_p (reg_class_t, reg_class_t);
4438 : extern bool reg_class_subset_p (reg_class_t, reg_class_t);
4439 : extern void globalize_reg (tree, int);
4440 : extern void init_reg_modes_target (void);
4441 : extern void init_regs (void);
4442 : extern void reinit_regs (void);
4443 : extern void init_fake_stack_mems (void);
4444 : extern void save_register_info (void);
4445 : extern void init_reg_sets (void);
4446 : extern void regclass (rtx, int);
4447 : extern void reg_scan (rtx_insn *, unsigned int);
4448 : extern void fix_register (const char *, int, int);
4449 : extern const HARD_REG_SET *valid_mode_changes_for_regno (unsigned int);
4450 :
4451 : /* In reload1.cc */
4452 : extern bool function_invariant_p (const_rtx);
4453 :
4454 : /* In calls.cc */
4455 : enum libcall_type
4456 : {
4457 : LCT_NORMAL = 0,
4458 : LCT_CONST = 1,
4459 : LCT_PURE = 2,
4460 : LCT_NORETURN = 3,
4461 : LCT_THROW = 4,
4462 : LCT_RETURNS_TWICE = 5
4463 : };
4464 :
4465 : extern rtx emit_library_call_value_1 (int, rtx, rtx, enum libcall_type,
4466 : machine_mode, int, rtx_mode_t *);
4467 :
4468 : /* Output a library call and discard the returned value. FUN is the
4469 : address of the function, as a SYMBOL_REF rtx, and OUTMODE is the mode
4470 : of the (discarded) return value. FN_TYPE is LCT_NORMAL for `normal'
4471 : calls, LCT_CONST for `const' calls, LCT_PURE for `pure' calls, or
4472 : another LCT_ value for other types of library calls.
4473 :
4474 : There are different overloads of this function for different numbers
4475 : of arguments. In each case the argument value is followed by its mode. */
4476 :
4477 : inline void
4478 0 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode)
4479 : {
4480 0 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 0, NULL);
4481 0 : }
4482 :
4483 : inline void
4484 0 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4485 : rtx arg1, machine_mode arg1_mode)
4486 : {
4487 0 : rtx_mode_t args[] = { rtx_mode_t (arg1, arg1_mode) };
4488 0 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 1, args);
4489 0 : }
4490 :
4491 : inline void
4492 178 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4493 : rtx arg1, machine_mode arg1_mode,
4494 : rtx arg2, machine_mode arg2_mode)
4495 : {
4496 178 : rtx_mode_t args[] = {
4497 : rtx_mode_t (arg1, arg1_mode),
4498 : rtx_mode_t (arg2, arg2_mode)
4499 178 : };
4500 178 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 2, args);
4501 178 : }
4502 :
4503 : inline void
4504 439 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4505 : rtx arg1, machine_mode arg1_mode,
4506 : rtx arg2, machine_mode arg2_mode,
4507 : rtx arg3, machine_mode arg3_mode)
4508 : {
4509 439 : rtx_mode_t args[] = {
4510 : rtx_mode_t (arg1, arg1_mode),
4511 : rtx_mode_t (arg2, arg2_mode),
4512 : rtx_mode_t (arg3, arg3_mode)
4513 439 : };
4514 439 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 3, args);
4515 439 : }
4516 :
4517 : inline void
4518 : emit_library_call (rtx fun, libcall_type fn_type, machine_mode outmode,
4519 : rtx arg1, machine_mode arg1_mode,
4520 : rtx arg2, machine_mode arg2_mode,
4521 : rtx arg3, machine_mode arg3_mode,
4522 : rtx arg4, machine_mode arg4_mode)
4523 : {
4524 : rtx_mode_t args[] = {
4525 : rtx_mode_t (arg1, arg1_mode),
4526 : rtx_mode_t (arg2, arg2_mode),
4527 : rtx_mode_t (arg3, arg3_mode),
4528 : rtx_mode_t (arg4, arg4_mode)
4529 : };
4530 : emit_library_call_value_1 (0, fun, NULL_RTX, fn_type, outmode, 4, args);
4531 : }
4532 :
4533 : /* Like emit_library_call, but return the value produced by the call.
4534 : Use VALUE to store the result if it is nonnull, otherwise pick a
4535 : convenient location. */
4536 :
4537 : inline rtx
4538 16 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4539 : machine_mode outmode)
4540 : {
4541 16 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 0, NULL);
4542 : }
4543 :
4544 : inline rtx
4545 41890 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4546 : machine_mode outmode,
4547 : rtx arg1, machine_mode arg1_mode)
4548 : {
4549 41890 : rtx_mode_t args[] = { rtx_mode_t (arg1, arg1_mode) };
4550 41890 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 1, args);
4551 : }
4552 :
4553 : inline rtx
4554 76307 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4555 : machine_mode outmode,
4556 : rtx arg1, machine_mode arg1_mode,
4557 : rtx arg2, machine_mode arg2_mode)
4558 : {
4559 76307 : rtx_mode_t args[] = {
4560 : rtx_mode_t (arg1, arg1_mode),
4561 : rtx_mode_t (arg2, arg2_mode)
4562 76307 : };
4563 76307 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 2, args);
4564 : }
4565 :
4566 : inline rtx
4567 896 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4568 : machine_mode outmode,
4569 : rtx arg1, machine_mode arg1_mode,
4570 : rtx arg2, machine_mode arg2_mode,
4571 : rtx arg3, machine_mode arg3_mode)
4572 : {
4573 896 : rtx_mode_t args[] = {
4574 : rtx_mode_t (arg1, arg1_mode),
4575 : rtx_mode_t (arg2, arg2_mode),
4576 : rtx_mode_t (arg3, arg3_mode)
4577 896 : };
4578 896 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 3, args);
4579 : }
4580 :
4581 : inline rtx
4582 : emit_library_call_value (rtx fun, rtx value, libcall_type fn_type,
4583 : machine_mode outmode,
4584 : rtx arg1, machine_mode arg1_mode,
4585 : rtx arg2, machine_mode arg2_mode,
4586 : rtx arg3, machine_mode arg3_mode,
4587 : rtx arg4, machine_mode arg4_mode)
4588 : {
4589 : rtx_mode_t args[] = {
4590 : rtx_mode_t (arg1, arg1_mode),
4591 : rtx_mode_t (arg2, arg2_mode),
4592 : rtx_mode_t (arg3, arg3_mode),
4593 : rtx_mode_t (arg4, arg4_mode)
4594 : };
4595 : return emit_library_call_value_1 (1, fun, value, fn_type, outmode, 4, args);
4596 : }
4597 :
4598 : /* In varasm.cc */
4599 : extern void init_varasm_once (void);
4600 :
4601 : extern rtx make_debug_expr_from_rtl (const_rtx);
4602 :
4603 : /* In read-rtl.cc */
4604 : #ifdef GENERATOR_FILE
4605 : extern bool read_rtx (const char *, vec<rtx> *);
4606 : #endif
4607 :
4608 : /* In alias.cc */
4609 : extern rtx canon_rtx (rtx);
4610 : extern rtx get_addr (rtx);
4611 : extern bool read_dependence (const_rtx, const_rtx);
4612 : extern bool true_dependence (const_rtx, machine_mode, const_rtx);
4613 : extern bool canon_true_dependence (const_rtx, machine_mode, rtx,
4614 : const_rtx, rtx);
4615 : extern bool anti_dependence (const_rtx, const_rtx);
4616 : extern bool canon_anti_dependence (const_rtx, bool,
4617 : const_rtx, machine_mode, rtx);
4618 : extern bool output_dependence (const_rtx, const_rtx);
4619 : extern bool canon_output_dependence (const_rtx, bool,
4620 : const_rtx, machine_mode, rtx);
4621 : extern bool may_alias_p (const_rtx, const_rtx);
4622 : extern void init_alias_target (void);
4623 : extern void init_alias_analysis (void);
4624 : extern void end_alias_analysis (void);
4625 : extern void vt_equate_reg_base_value (const_rtx, const_rtx);
4626 : extern bool memory_modified_in_insn_p (const_rtx, const_rtx);
4627 : extern bool may_be_sp_based_p (rtx);
4628 : extern rtx gen_hard_reg_clobber (machine_mode, unsigned int);
4629 : extern rtx get_reg_known_value (unsigned int);
4630 : extern bool get_reg_known_equiv_p (unsigned int);
4631 : extern rtx get_reg_base_value (unsigned int);
4632 : extern rtx extract_mem_from_operand (rtx);
4633 :
4634 : #ifdef STACK_REGS
4635 : extern bool stack_regs_mentioned (const_rtx insn);
4636 : #endif
4637 :
4638 : /* In toplev.cc */
4639 : extern GTY(()) rtx stack_limit_rtx;
4640 :
4641 : /* In var-tracking.cc */
4642 : extern unsigned int variable_tracking_main (void);
4643 : extern void delete_vta_debug_insns (bool);
4644 :
4645 : /* In stor-layout.cc. */
4646 : extern void get_mode_bounds (scalar_int_mode, int,
4647 : scalar_int_mode, rtx *, rtx *);
4648 :
4649 : /* In loop-iv.cc */
4650 : extern rtx canon_condition (rtx);
4651 : extern void simplify_using_condition (rtx, rtx *, bitmap);
4652 :
4653 : /* In final.cc */
4654 : extern void compute_alignments (void);
4655 : extern void update_alignments (vec<rtx> &);
4656 : extern int asm_str_count (const char *templ);
4657 : extern rtx get_call_rtx_from (const rtx_insn *);
4658 :
4659 : struct rtl_hooks
4660 : {
4661 : rtx (*gen_lowpart) (machine_mode, rtx);
4662 : rtx (*gen_lowpart_no_emit) (machine_mode, rtx);
4663 : rtx (*reg_nonzero_bits) (const_rtx, scalar_int_mode, scalar_int_mode,
4664 : unsigned HOST_WIDE_INT *);
4665 : rtx (*reg_num_sign_bit_copies) (const_rtx, scalar_int_mode, scalar_int_mode,
4666 : unsigned int *);
4667 : bool (*reg_truncated_to_mode) (machine_mode, const_rtx);
4668 :
4669 : /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */
4670 : };
4671 :
4672 : /* Each pass can provide its own. */
4673 : extern struct rtl_hooks rtl_hooks;
4674 :
4675 : /* ... but then it has to restore these. */
4676 : extern const struct rtl_hooks general_rtl_hooks;
4677 :
4678 : /* Keep this for the nonce. */
4679 : #define gen_lowpart rtl_hooks.gen_lowpart
4680 :
4681 : extern void insn_locations_init (void);
4682 : extern void insn_locations_finalize (void);
4683 : extern void set_curr_insn_location (location_t);
4684 : extern location_t curr_insn_location (void);
4685 : extern void set_insn_locations (rtx_insn *, location_t);
4686 :
4687 : /* rtl-error.cc */
4688 : extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *)
4689 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
4690 : extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *)
4691 : ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
4692 :
4693 : #define fatal_insn(msgid, insn) \
4694 : _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__)
4695 : #define fatal_insn_not_found(insn) \
4696 : _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__)
4697 :
4698 : /* reginfo.cc */
4699 : extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER];
4700 :
4701 : /* Information about the function that is propagated by the RTL backend.
4702 : Available only for functions that has been already assembled. */
4703 :
4704 : struct GTY(()) cgraph_rtl_info {
4705 : unsigned int preferred_incoming_stack_boundary;
4706 :
4707 : /* Which registers the function clobbers, either directly or by
4708 : calling another function. */
4709 : HARD_REG_SET function_used_regs;
4710 : };
4711 :
4712 : /* If loads from memories of mode MODE always sign or zero extend,
4713 : return SIGN_EXTEND or ZERO_EXTEND as appropriate. Return UNKNOWN
4714 : otherwise. */
4715 :
4716 : inline rtx_code
4717 35972 : load_extend_op (machine_mode mode)
4718 : {
4719 35972 : scalar_int_mode int_mode;
4720 35972 : if (is_a <scalar_int_mode> (mode, &int_mode)
4721 : && GET_MODE_PRECISION (int_mode) < BITS_PER_WORD)
4722 : return LOAD_EXTEND_OP (int_mode);
4723 : return UNKNOWN;
4724 : }
4725 :
4726 : /* If X is a PLUS of a base and a constant offset, add the constant to *OFFSET
4727 : and return the base. Return X otherwise. */
4728 :
4729 : inline rtx
4730 111419249 : strip_offset_and_add (rtx x, poly_int64 *offset)
4731 : {
4732 111419249 : if (GET_CODE (x) == PLUS)
4733 : {
4734 59280216 : poly_int64 suboffset;
4735 59280216 : x = strip_offset (x, &suboffset);
4736 118560432 : *offset = poly_uint64 (*offset) + suboffset;
4737 : }
4738 111419249 : return x;
4739 : }
4740 :
4741 : /* Return true if X is an operation that always operates on the full
4742 : registers for WORD_REGISTER_OPERATIONS architectures. */
4743 :
4744 : inline bool
4745 : word_register_operation_p (const_rtx x)
4746 : {
4747 : switch (GET_CODE (x))
4748 : {
4749 : case CONST_INT:
4750 : case ROTATE:
4751 : case ROTATERT:
4752 : case SIGN_EXTRACT:
4753 : case ZERO_EXTRACT:
4754 : return false;
4755 :
4756 : default:
4757 : return true;
4758 : }
4759 : }
4760 :
4761 : /* Holds an rtx comparison to simplify passing many parameters pertaining to a
4762 : single comparison. */
4763 :
4764 : struct rtx_comparison {
4765 : rtx_code code;
4766 : rtx op0, op1;
4767 : machine_mode mode;
4768 : };
4769 :
4770 : /* gtype-desc.cc. */
4771 : extern void gt_ggc_mx (rtx &);
4772 : extern void gt_pch_nx (rtx &);
4773 : extern void gt_pch_nx (rtx &, gt_pointer_operator, void *);
4774 :
4775 : #endif /* ! GCC_RTL_H */
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