1/* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987-2013 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along 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#include "statistics.h" 24#include "machmode.h" 25#include "input.h" 26#include "real.h" 27#include "vec.h" 28#include "fixed-value.h" 29#include "alias.h" 30#include "hashtab.h" 31#include "flags.h" 32 33/* Value used by some passes to "recognize" noop moves as valid 34 instructions. */ 35#define NOOP_MOVE_INSN_CODE INT_MAX 36 37/* Register Transfer Language EXPRESSIONS CODES */ 38 39#define RTX_CODE enum rtx_code 40enum rtx_code { 41 42#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , 43#include "rtl.def" /* rtl expressions are documented here */ 44#undef DEF_RTL_EXPR 45 46 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for 47 NUM_RTX_CODE. 48 Assumes default enum value assignment. */ 49 50/* The cast here, saves many elsewhere. */ 51#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 52 53/* Similar, but since generator files get more entries... */ 54#ifdef GENERATOR_FILE 55# define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND) 56#endif 57 58/* Register Transfer Language EXPRESSIONS CODE CLASSES */ 59 60enum rtx_class { 61 /* We check bit 0-1 of some rtx class codes in the predicates below. */ 62 63 /* Bit 0 = comparison if 0, arithmetic is 1 64 Bit 1 = 1 if commutative. */ 65 RTX_COMPARE, /* 0 */ 66 RTX_COMM_COMPARE, 67 RTX_BIN_ARITH, 68 RTX_COMM_ARITH, 69 70 /* Must follow the four preceding values. */ 71 RTX_UNARY, /* 4 */ 72 73 RTX_EXTRA, 74 RTX_MATCH, 75 RTX_INSN, 76 77 /* Bit 0 = 1 if constant. */ 78 RTX_OBJ, /* 8 */ 79 RTX_CONST_OBJ, 80 81 RTX_TERNARY, 82 RTX_BITFIELD_OPS, 83 RTX_AUTOINC 84}; 85 86#define RTX_OBJ_MASK (~1) 87#define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) 88#define RTX_COMPARE_MASK (~1) 89#define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) 90#define RTX_ARITHMETIC_MASK (~1) 91#define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) 92#define RTX_BINARY_MASK (~3) 93#define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) 94#define RTX_COMMUTATIVE_MASK (~2) 95#define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) 96#define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) 97 98extern const unsigned char rtx_length[NUM_RTX_CODE]; 99#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 100 101extern const char * const rtx_name[NUM_RTX_CODE]; 102#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 103 104extern const char * const rtx_format[NUM_RTX_CODE]; 105#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 106 107extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 108#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 109 110extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 111extern const unsigned char rtx_next[NUM_RTX_CODE]; 112 113/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 114 relative to which the offsets are calculated, as explained in rtl.def. */ 115typedef struct 116{ 117 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 118 unsigned min_align: 8; 119 /* Flags: */ 120 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 121 unsigned min_after_vec: 1; /* minimum address target label is 122 after the ADDR_DIFF_VEC. */ 123 unsigned max_after_vec: 1; /* maximum address target label is 124 after the ADDR_DIFF_VEC. */ 125 unsigned min_after_base: 1; /* minimum address target label is 126 after BASE. */ 127 unsigned max_after_base: 1; /* maximum address target label is 128 after BASE. */ 129 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 130 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 131 unsigned : 2; 132 unsigned scale : 8; 133} addr_diff_vec_flags; 134 135/* Structure used to describe the attributes of a MEM. These are hashed 136 so MEMs that the same attributes share a data structure. This means 137 they cannot be modified in place. */ 138typedef struct GTY(()) mem_attrs 139{ 140 /* The expression that the MEM accesses, or null if not known. 141 This expression might be larger than the memory reference itself. 142 (In other words, the MEM might access only part of the object.) */ 143 tree expr; 144 145 /* The offset of the memory reference from the start of EXPR. 146 Only valid if OFFSET_KNOWN_P. */ 147 HOST_WIDE_INT offset; 148 149 /* The size of the memory reference in bytes. Only valid if 150 SIZE_KNOWN_P. */ 151 HOST_WIDE_INT size; 152 153 /* The alias set of the memory reference. */ 154 alias_set_type alias; 155 156 /* The alignment of the reference in bits. Always a multiple of 157 BITS_PER_UNIT. Note that EXPR may have a stricter alignment 158 than the memory reference itself. */ 159 unsigned int align; 160 161 /* The address space that the memory reference uses. */ 162 unsigned char addrspace; 163 164 /* True if OFFSET is known. */ 165 bool offset_known_p; 166 167 /* True if SIZE is known. */ 168 bool size_known_p; 169} mem_attrs; 170 171/* Structure used to describe the attributes of a REG in similar way as 172 mem_attrs does for MEM above. Note that the OFFSET field is calculated 173 in the same way as for mem_attrs, rather than in the same way as a 174 SUBREG_BYTE. For example, if a big-endian target stores a byte 175 object in the low part of a 4-byte register, the OFFSET field 176 will be -3 rather than 0. */ 177 178typedef struct GTY(()) reg_attrs { 179 tree decl; /* decl corresponding to REG. */ 180 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 181} reg_attrs; 182 183/* Common union for an element of an rtx. */ 184 185union rtunion_def 186{ 187 int rt_int; 188 unsigned int rt_uint; 189 const char *rt_str; 190 rtx rt_rtx; 191 rtvec rt_rtvec; 192 enum machine_mode rt_type; 193 addr_diff_vec_flags rt_addr_diff_vec_flags; 194 struct cselib_val_struct *rt_cselib; 195 tree rt_tree; 196 basic_block rt_bb; 197 mem_attrs *rt_mem; 198 reg_attrs *rt_reg; 199 struct constant_descriptor_rtx *rt_constant; 200 struct dw_cfi_struct *rt_cfi; 201}; 202typedef union rtunion_def rtunion; 203 204/* This structure remembers the position of a SYMBOL_REF within an 205 object_block structure. A SYMBOL_REF only provides this information 206 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 207struct GTY(()) block_symbol { 208 /* The usual SYMBOL_REF fields. */ 209 rtunion GTY ((skip)) fld[3]; 210 211 /* The block that contains this object. */ 212 struct object_block *block; 213 214 /* The offset of this object from the start of its block. It is negative 215 if the symbol has not yet been assigned an offset. */ 216 HOST_WIDE_INT offset; 217}; 218 219/* Describes a group of objects that are to be placed together in such 220 a way that their relative positions are known. */ 221struct GTY(()) object_block { 222 /* The section in which these objects should be placed. */ 223 section *sect; 224 225 /* The alignment of the first object, measured in bits. */ 226 unsigned int alignment; 227 228 /* The total size of the objects, measured in bytes. */ 229 HOST_WIDE_INT size; 230 231 /* The SYMBOL_REFs for each object. The vector is sorted in 232 order of increasing offset and the following conditions will 233 hold for each element X: 234 235 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 236 !SYMBOL_REF_ANCHOR_P (X) 237 SYMBOL_REF_BLOCK (X) == [address of this structure] 238 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 239 vec<rtx, va_gc> *objects; 240 241 /* All the anchor SYMBOL_REFs used to address these objects, sorted 242 in order of increasing offset, and then increasing TLS model. 243 The following conditions will hold for each element X in this vector: 244 245 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 246 SYMBOL_REF_ANCHOR_P (X) 247 SYMBOL_REF_BLOCK (X) == [address of this structure] 248 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 249 vec<rtx, va_gc> *anchors; 250}; 251 252/* RTL expression ("rtx"). */ 253 254struct GTY((chain_next ("RTX_NEXT (&%h)"), 255 chain_prev ("RTX_PREV (&%h)"), variable_size)) rtx_def { 256 /* The kind of expression this is. */ 257 ENUM_BITFIELD(rtx_code) code: 16; 258 259 /* The kind of value the expression has. */ 260 ENUM_BITFIELD(machine_mode) mode : 8; 261 262 /* 1 in a MEM if we should keep the alias set for this mem unchanged 263 when we access a component. 264 1 in a CALL_INSN if it is a sibling call. 265 1 in a SET that is for a return. 266 In a CODE_LABEL, part of the two-bit alternate entry field. 267 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c. 268 1 in a VALUE is SP_BASED_VALUE_P in cselib.c. */ 269 unsigned int jump : 1; 270 /* In a CODE_LABEL, part of the two-bit alternate entry field. 271 1 in a MEM if it cannot trap. 272 1 in a CALL_INSN logically equivalent to 273 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 274 unsigned int call : 1; 275 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 276 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 277 1 in a SYMBOL_REF if it addresses something in the per-function 278 constants pool. 279 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY. 280 1 in a NOTE, or EXPR_LIST for a const call. 281 1 in a JUMP_INSN of an annulling branch. 282 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c. 283 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c. 284 1 in a clobber temporarily created for LRA. */ 285 unsigned int unchanging : 1; 286 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 287 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 288 if it has been deleted. 289 1 in a REG expression if corresponds to a variable declared by the user, 290 0 for an internally generated temporary. 291 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 292 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a 293 non-local label. 294 In a SYMBOL_REF, this flag is used for machine-specific purposes. 295 In a PREFETCH, this flag indicates that it should be considered a scheduling 296 barrier. 297 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */ 298 unsigned int volatil : 1; 299 /* 1 in a REG if the register is used only in exit code a loop. 300 1 in a SUBREG expression if was generated from a variable with a 301 promoted mode. 302 1 in a CODE_LABEL if the label is used for nonlocal gotos 303 and must not be deleted even if its count is zero. 304 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 305 together with the preceding insn. Valid only within sched. 306 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 307 from the target of a branch. Valid from reorg until end of compilation; 308 cleared before used. 309 310 The name of the field is historical. It used to be used in MEMs 311 to record whether the MEM accessed part of a structure. */ 312 unsigned int in_struct : 1; 313 /* At the end of RTL generation, 1 if this rtx is used. This is used for 314 copying shared structure. See `unshare_all_rtl'. 315 In a REG, this is not needed for that purpose, and used instead 316 in `leaf_renumber_regs_insn'. 317 1 in a SYMBOL_REF, means that emit_library_call 318 has used it as the function. 319 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c. 320 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */ 321 unsigned int used : 1; 322 /* 1 in an INSN or a SET if this rtx is related to the call frame, 323 either changing how we compute the frame address or saving and 324 restoring registers in the prologue and epilogue. 325 1 in a REG or MEM if it is a pointer. 326 1 in a SYMBOL_REF if it addresses something in the per-function 327 constant string pool. 328 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */ 329 unsigned frame_related : 1; 330 /* 1 in a REG or PARALLEL that is the current function's return value. 331 1 in a SYMBOL_REF for a weak symbol. 332 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. 333 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c. 334 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */ 335 unsigned return_val : 1; 336 337 /* The first element of the operands of this rtx. 338 The number of operands and their types are controlled 339 by the `code' field, according to rtl.def. */ 340 union u { 341 rtunion fld[1]; 342 HOST_WIDE_INT hwint[1]; 343 struct block_symbol block_sym; 344 struct real_value rv; 345 struct fixed_value fv; 346 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 347}; 348 349/* The size in bytes of an rtx header (code, mode and flags). */ 350#define RTX_HDR_SIZE offsetof (struct rtx_def, u) 351 352/* The size in bytes of an rtx with code CODE. */ 353#define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 354 355#define NULL_RTX (rtx) 0 356 357/* The "next" and "previous" RTX, relative to this one. */ 358 359#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 360 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 361 362/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 363 */ 364#define RTX_PREV(X) ((INSN_P (X) \ 365 || NOTE_P (X) \ 366 || BARRIER_P (X) \ 367 || LABEL_P (X)) \ 368 && PREV_INSN (X) != NULL \ 369 && NEXT_INSN (PREV_INSN (X)) == X \ 370 ? PREV_INSN (X) : NULL) 371 372/* Define macros to access the `code' field of the rtx. */ 373 374#define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 375#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 376 377#define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) 378#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 379 380/* RTL vector. These appear inside RTX's when there is a need 381 for a variable number of things. The principle use is inside 382 PARALLEL expressions. */ 383 384struct GTY((variable_size)) rtvec_def { 385 int num_elem; /* number of elements */ 386 rtx GTY ((length ("%h.num_elem"))) elem[1]; 387}; 388 389#define NULL_RTVEC (rtvec) 0 390 391#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 392#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 393 394/* Predicate yielding nonzero iff X is an rtx for a register. */ 395#define REG_P(X) (GET_CODE (X) == REG) 396 397/* Predicate yielding nonzero iff X is an rtx for a memory location. */ 398#define MEM_P(X) (GET_CODE (X) == MEM) 399 400/* Match CONST_*s that can represent compile-time constant integers. */ 401#define CASE_CONST_SCALAR_INT \ 402 case CONST_INT: \ 403 case CONST_DOUBLE 404 405/* Match CONST_*s for which pointer equality corresponds to value equality. */ 406#define CASE_CONST_UNIQUE \ 407 case CONST_INT: \ 408 case CONST_DOUBLE: \ 409 case CONST_FIXED 410 411/* Match all CONST_* rtxes. */ 412#define CASE_CONST_ANY \ 413 case CONST_INT: \ 414 case CONST_DOUBLE: \ 415 case CONST_FIXED: \ 416 case CONST_VECTOR 417 418/* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 419#define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 420 421/* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */ 422#define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED) 423 424/* Predicate yielding true iff X is an rtx for a double-int 425 or floating point constant. */ 426#define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE) 427 428/* Predicate yielding true iff X is an rtx for a double-int. */ 429#define CONST_DOUBLE_AS_INT_P(X) \ 430 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode) 431 432/* Predicate yielding true iff X is an rtx for a integer const. */ 433#define CONST_SCALAR_INT_P(X) \ 434 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X)) 435 436/* Predicate yielding true iff X is an rtx for a double-int. */ 437#define CONST_DOUBLE_AS_FLOAT_P(X) \ 438 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode) 439 440/* Predicate yielding nonzero iff X is a label insn. */ 441#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 442 443/* Predicate yielding nonzero iff X is a jump insn. */ 444#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 445 446/* Predicate yielding nonzero iff X is a call insn. */ 447#define CALL_P(X) (GET_CODE (X) == CALL_INSN) 448 449/* Predicate yielding nonzero iff X is an insn that cannot jump. */ 450#define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 451 452/* Predicate yielding nonzero iff X is a debug note/insn. */ 453#define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN) 454 455/* Predicate yielding nonzero iff X is an insn that is not a debug insn. */ 456#define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) 457 458/* Nonzero if DEBUG_INSN_P may possibly hold. */ 459#define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments) 460 461/* Predicate yielding nonzero iff X is a real insn. */ 462#define INSN_P(X) \ 463 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 464 465/* Predicate yielding nonzero iff X is a note insn. */ 466#define NOTE_P(X) (GET_CODE (X) == NOTE) 467 468/* Predicate yielding nonzero iff X is a barrier insn. */ 469#define BARRIER_P(X) (GET_CODE (X) == BARRIER) 470 471/* Predicate yielding nonzero iff X is a data for a jump table. */ 472#define JUMP_TABLE_DATA_P(INSN) \ 473 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ 474 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) 475 476/* Predicate yielding nonzero iff X is a return or simple_return. */ 477#define ANY_RETURN_P(X) \ 478 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN) 479 480/* 1 if X is a unary operator. */ 481 482#define UNARY_P(X) \ 483 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 484 485/* 1 if X is a binary operator. */ 486 487#define BINARY_P(X) \ 488 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 489 490/* 1 if X is an arithmetic operator. */ 491 492#define ARITHMETIC_P(X) \ 493 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 494 == RTX_ARITHMETIC_RESULT) 495 496/* 1 if X is an arithmetic operator. */ 497 498#define COMMUTATIVE_ARITH_P(X) \ 499 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 500 501/* 1 if X is a commutative arithmetic operator or a comparison operator. 502 These two are sometimes selected together because it is possible to 503 swap the two operands. */ 504 505#define SWAPPABLE_OPERANDS_P(X) \ 506 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 507 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 508 | (1 << RTX_COMPARE))) 509 510/* 1 if X is a non-commutative operator. */ 511 512#define NON_COMMUTATIVE_P(X) \ 513 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 514 == RTX_NON_COMMUTATIVE_RESULT) 515 516/* 1 if X is a commutative operator on integers. */ 517 518#define COMMUTATIVE_P(X) \ 519 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 520 == RTX_COMMUTATIVE_RESULT) 521 522/* 1 if X is a relational operator. */ 523 524#define COMPARISON_P(X) \ 525 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 526 527/* 1 if X is a constant value that is an integer. */ 528 529#define CONSTANT_P(X) \ 530 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 531 532/* 1 if X can be used to represent an object. */ 533#define OBJECT_P(X) \ 534 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 535 536/* General accessor macros for accessing the fields of an rtx. */ 537 538#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 539/* The bit with a star outside the statement expr and an & inside is 540 so that N can be evaluated only once. */ 541#define RTL_CHECK1(RTX, N, C1) __extension__ \ 542(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 543 const enum rtx_code _code = GET_CODE (_rtx); \ 544 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 545 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 546 __FUNCTION__); \ 547 if (GET_RTX_FORMAT(_code)[_n] != C1) \ 548 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 549 __FUNCTION__); \ 550 &_rtx->u.fld[_n]; })) 551 552#define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 553(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 554 const enum rtx_code _code = GET_CODE (_rtx); \ 555 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 556 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 557 __FUNCTION__); \ 558 if (GET_RTX_FORMAT(_code)[_n] != C1 \ 559 && GET_RTX_FORMAT(_code)[_n] != C2) \ 560 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 561 __FUNCTION__); \ 562 &_rtx->u.fld[_n]; })) 563 564#define RTL_CHECKC1(RTX, N, C) __extension__ \ 565(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 566 if (GET_CODE (_rtx) != (C)) \ 567 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 568 __FUNCTION__); \ 569 &_rtx->u.fld[_n]; })) 570 571#define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 572(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 573 const enum rtx_code _code = GET_CODE (_rtx); \ 574 if (_code != (C1) && _code != (C2)) \ 575 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 576 __FUNCTION__); \ 577 &_rtx->u.fld[_n]; })) 578 579#define RTVEC_ELT(RTVEC, I) __extension__ \ 580(*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \ 581 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 582 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 583 __FUNCTION__); \ 584 &_rtvec->elem[_i]; })) 585 586#define XWINT(RTX, N) __extension__ \ 587(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 588 const enum rtx_code _code = GET_CODE (_rtx); \ 589 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 590 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 591 __FUNCTION__); \ 592 if (GET_RTX_FORMAT(_code)[_n] != 'w') \ 593 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 594 __FUNCTION__); \ 595 &_rtx->u.hwint[_n]; })) 596 597#define XCWINT(RTX, N, C) __extension__ \ 598(*({ __typeof (RTX) const _rtx = (RTX); \ 599 if (GET_CODE (_rtx) != (C)) \ 600 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 601 __FUNCTION__); \ 602 &_rtx->u.hwint[N]; })) 603 604#define XCMWINT(RTX, N, C, M) __extension__ \ 605(*({ __typeof (RTX) const _rtx = (RTX); \ 606 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 607 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 608 __LINE__, __FUNCTION__); \ 609 &_rtx->u.hwint[N]; })) 610 611#define XCNMPRV(RTX, C, M) __extension__ \ 612({ __typeof (RTX) const _rtx = (RTX); \ 613 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 614 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 615 __LINE__, __FUNCTION__); \ 616 &_rtx->u.rv; }) 617 618#define XCNMPFV(RTX, C, M) __extension__ \ 619({ __typeof (RTX) const _rtx = (RTX); \ 620 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 621 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 622 __LINE__, __FUNCTION__); \ 623 &_rtx->u.fv; }) 624 625#define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 626({ __typeof (RTX) const _symbol = (RTX); \ 627 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \ 628 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 629 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 630 __FUNCTION__); \ 631 &_symbol->u.block_sym; }) 632 633extern void rtl_check_failed_bounds (const_rtx, int, const char *, int, 634 const char *) 635 ATTRIBUTE_NORETURN; 636extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int, 637 const char *) 638 ATTRIBUTE_NORETURN; 639extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *, 640 int, const char *) 641 ATTRIBUTE_NORETURN; 642extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *, 643 int, const char *) 644 ATTRIBUTE_NORETURN; 645extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code, 646 const char *, int, const char *) 647 ATTRIBUTE_NORETURN; 648extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, enum machine_mode, 649 bool, const char *, int, const char *) 650 ATTRIBUTE_NORETURN; 651extern void rtl_check_failed_block_symbol (const char *, int, const char *) 652 ATTRIBUTE_NORETURN; 653extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int, 654 const char *) 655 ATTRIBUTE_NORETURN; 656 657#else /* not ENABLE_RTL_CHECKING */ 658 659#define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 660#define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 661#define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) 662#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 663#define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) 664#define XWINT(RTX, N) ((RTX)->u.hwint[N]) 665#define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 666#define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 667#define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 668#define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 669#define XCNMPFV(RTX, C, M) (&(RTX)->u.fv) 670#define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 671 672#endif 673 674/* General accessor macros for accessing the flags of an rtx. */ 675 676/* Access an individual rtx flag, with no checking of any kind. */ 677#define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 678 679#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 680#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 681({ __typeof (RTX) const _rtx = (RTX); \ 682 if (GET_CODE(_rtx) != C1) \ 683 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 684 __FUNCTION__); \ 685 _rtx; }) 686 687#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 688({ __typeof (RTX) const _rtx = (RTX); \ 689 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ 690 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 691 __FUNCTION__); \ 692 _rtx; }) 693 694#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 695({ __typeof (RTX) const _rtx = (RTX); \ 696 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 697 && GET_CODE(_rtx) != C3) \ 698 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 699 __FUNCTION__); \ 700 _rtx; }) 701 702#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 703({ __typeof (RTX) const _rtx = (RTX); \ 704 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 705 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ 706 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 707 __FUNCTION__); \ 708 _rtx; }) 709 710#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 711({ __typeof (RTX) const _rtx = (RTX); \ 712 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 713 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 714 && GET_CODE(_rtx) != C5) \ 715 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 716 __FUNCTION__); \ 717 _rtx; }) 718 719#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 720 __extension__ \ 721({ __typeof (RTX) const _rtx = (RTX); \ 722 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 723 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 724 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ 725 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 726 __FUNCTION__); \ 727 _rtx; }) 728 729#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 730 __extension__ \ 731({ __typeof (RTX) const _rtx = (RTX); \ 732 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 733 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 734 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 735 && GET_CODE(_rtx) != C7) \ 736 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 737 __FUNCTION__); \ 738 _rtx; }) 739 740#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ 741 __extension__ \ 742({ __typeof (RTX) const _rtx = (RTX); \ 743 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 744 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 745 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 746 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ 747 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 748 __FUNCTION__); \ 749 _rtx; }) 750 751extern void rtl_check_failed_flag (const char *, const_rtx, const char *, 752 int, const char *) 753 ATTRIBUTE_NORETURN 754 ; 755 756#else /* not ENABLE_RTL_FLAG_CHECKING */ 757 758#define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 759#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 760#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 761#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 762#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 763#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 764#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 765#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) 766#endif 767 768#define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 769#define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint) 770#define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 771#define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 772#define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 773#define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 774#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 775#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 776#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 777#define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi) 778 779#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 780#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 781 782/* These are like XINT, etc. except that they expect a '0' field instead 783 of the normal type code. */ 784 785#define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 786#define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 787#define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 788#define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 789#define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 790#define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 791#define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 792#define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 793#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 794#define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 795#define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 796#define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 797#define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 798 799/* Access a '0' field with any type. */ 800#define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 801 802#define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 803#define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 804#define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 805#define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 806#define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 807#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 808#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 809#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 810#define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi) 811#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 812 813#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 814#define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 815 816#define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 817 818/* ACCESS MACROS for particular fields of insns. */ 819 820/* Holds a unique number for each insn. 821 These are not necessarily sequentially increasing. */ 822#define INSN_UID(INSN) XINT (INSN, 0) 823 824/* Chain insns together in sequence. */ 825#define PREV_INSN(INSN) XEXP (INSN, 1) 826#define NEXT_INSN(INSN) XEXP (INSN, 2) 827 828#define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) 829 830/* The body of an insn. */ 831#define PATTERN(INSN) XEXP (INSN, 4) 832 833#define INSN_LOCATION(INSN) XUINT (INSN, 5) 834 835#define INSN_HAS_LOCATION(INSN) ((LOCATION_LOCUS (INSN_LOCATION (INSN)))\ 836 != UNKNOWN_LOCATION) 837 838/* LOCATION of an RTX if relevant. */ 839#define RTL_LOCATION(X) (INSN_P (X) ? \ 840 INSN_LOCATION (X) : UNKNOWN_LOCATION) 841 842/* Code number of instruction, from when it was recognized. 843 -1 means this instruction has not been recognized yet. */ 844#define INSN_CODE(INSN) XINT (INSN, 6) 845 846#define RTX_FRAME_RELATED_P(RTX) \ 847 (RTL_FLAG_CHECK6("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \ 848 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related) 849 850/* 1 if RTX is an insn that has been deleted. */ 851#define INSN_DELETED_P(RTX) \ 852 (RTL_FLAG_CHECK7("INSN_DELETED_P", (RTX), DEBUG_INSN, INSN, \ 853 CALL_INSN, JUMP_INSN, \ 854 CODE_LABEL, BARRIER, NOTE)->volatil) 855 856/* 1 if RTX is a call to a const function. Built from ECF_CONST and 857 TREE_READONLY. */ 858#define RTL_CONST_CALL_P(RTX) \ 859 (RTL_FLAG_CHECK1("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging) 860 861/* 1 if RTX is a call to a pure function. Built from ECF_PURE and 862 DECL_PURE_P. */ 863#define RTL_PURE_CALL_P(RTX) \ 864 (RTL_FLAG_CHECK1("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val) 865 866/* 1 if RTX is a call to a const or pure function. */ 867#define RTL_CONST_OR_PURE_CALL_P(RTX) \ 868 (RTL_CONST_CALL_P(RTX) || RTL_PURE_CALL_P(RTX)) 869 870/* 1 if RTX is a call to a looping const or pure function. Built from 871 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 872#define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \ 873 (RTL_FLAG_CHECK1("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call) 874 875/* 1 if RTX is a call_insn for a sibling call. */ 876#define SIBLING_CALL_P(RTX) \ 877 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 878 879/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 880#define INSN_ANNULLED_BRANCH_P(RTX) \ 881 (RTL_FLAG_CHECK1("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging) 882 883/* 1 if RTX is an insn in a delay slot and is from the target of the branch. 884 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 885 executed if the branch is taken. For annulled branches with this bit 886 clear, the insn should be executed only if the branch is not taken. */ 887#define INSN_FROM_TARGET_P(RTX) \ 888 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) 889 890/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 891 See the comments for ADDR_DIFF_VEC in rtl.def. */ 892#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) 893 894/* In a VALUE, the value cselib has assigned to RTX. 895 This is a "struct cselib_val_struct", see cselib.h. */ 896#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) 897 898/* Holds a list of notes on what this insn does to various REGs. 899 It is a chain of EXPR_LIST rtx's, where the second operand is the 900 chain pointer and the first operand is the REG being described. 901 The mode field of the EXPR_LIST contains not a real machine mode 902 but a value from enum reg_note. */ 903#define REG_NOTES(INSN) XEXP(INSN, 7) 904 905/* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in 906 question. */ 907#define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx) 908 909enum reg_note 910{ 911#define DEF_REG_NOTE(NAME) NAME, 912#include "reg-notes.def" 913#undef DEF_REG_NOTE 914 REG_NOTE_MAX 915}; 916 917/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 918#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 919#define PUT_REG_NOTE_KIND(LINK, KIND) \ 920 PUT_MODE (LINK, (enum machine_mode) (KIND)) 921 922/* Names for REG_NOTE's in EXPR_LIST insn's. */ 923 924extern const char * const reg_note_name[]; 925#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 926 927/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 928 USE and CLOBBER expressions. 929 USE expressions list the registers filled with arguments that 930 are passed to the function. 931 CLOBBER expressions document the registers explicitly clobbered 932 by this CALL_INSN. 933 Pseudo registers can not be mentioned in this list. */ 934#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8) 935 936/* The label-number of a code-label. The assembler label 937 is made from `L' and the label-number printed in decimal. 938 Label numbers are unique in a compilation. */ 939#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) 940 941/* In a NOTE that is a line number, this is a string for the file name that the 942 line is in. We use the same field to record block numbers temporarily in 943 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 944 between ints and pointers if we use a different macro for the block number.) 945 */ 946 947/* Opaque data. */ 948#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) 949#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE) 950#define SET_INSN_DELETED(INSN) set_insn_deleted (INSN); 951#define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) 952#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) 953#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) 954#define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) 955#define NOTE_CFI(INSN) XCCFI (INSN, 4, NOTE) 956#define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 4, NOTE) 957 958/* In a NOTE that is a line number, this is the line number. 959 Other kinds of NOTEs are identified by negative numbers here. */ 960#define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE) 961 962/* Nonzero if INSN is a note marking the beginning of a basic block. */ 963#define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 964 (GET_CODE (INSN) == NOTE \ 965 && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK) 966 967/* Variable declaration and the location of a variable. */ 968#define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION)) 969#define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION)) 970 971/* Initialization status of the variable in the location. Status 972 can be unknown, uninitialized or initialized. See enumeration 973 type below. */ 974#define PAT_VAR_LOCATION_STATUS(PAT) \ 975 ((enum var_init_status) (XCINT ((PAT), 2, VAR_LOCATION))) 976 977/* Accessors for a NOTE_INSN_VAR_LOCATION. */ 978#define NOTE_VAR_LOCATION_DECL(NOTE) \ 979 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE)) 980#define NOTE_VAR_LOCATION_LOC(NOTE) \ 981 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE)) 982#define NOTE_VAR_LOCATION_STATUS(NOTE) \ 983 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE)) 984 985/* The VAR_LOCATION rtx in a DEBUG_INSN. */ 986#define INSN_VAR_LOCATION(INSN) PATTERN (INSN) 987 988/* Accessors for a tree-expanded var location debug insn. */ 989#define INSN_VAR_LOCATION_DECL(INSN) \ 990 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN)) 991#define INSN_VAR_LOCATION_LOC(INSN) \ 992 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN)) 993#define INSN_VAR_LOCATION_STATUS(INSN) \ 994 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN)) 995 996/* Expand to the RTL that denotes an unknown variable location in a 997 DEBUG_INSN. */ 998#define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx)) 999 1000/* Determine whether X is such an unknown location. */ 1001#define VAR_LOC_UNKNOWN_P(X) \ 1002 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx) 1003 1004/* 1 if RTX is emitted after a call, but it should take effect before 1005 the call returns. */ 1006#define NOTE_DURING_CALL_P(RTX) \ 1007 (RTL_FLAG_CHECK1("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call) 1008 1009/* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */ 1010#define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR) 1011 1012/* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */ 1013#define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR) 1014 1015/* PARM_DECL DEBUG_PARAMETER_REF references. */ 1016#define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF) 1017 1018/* Codes that appear in the NOTE_KIND field for kinds of notes 1019 that are not line numbers. These codes are all negative. 1020 1021 Notice that we do not try to use zero here for any of 1022 the special note codes because sometimes the source line 1023 actually can be zero! This happens (for example) when we 1024 are generating code for the per-translation-unit constructor 1025 and destructor routines for some C++ translation unit. */ 1026 1027enum insn_note 1028{ 1029#define DEF_INSN_NOTE(NAME) NAME, 1030#include "insn-notes.def" 1031#undef DEF_INSN_NOTE 1032 1033 NOTE_INSN_MAX 1034}; 1035 1036/* Names for NOTE insn's other than line numbers. */ 1037 1038extern const char * const note_insn_name[NOTE_INSN_MAX]; 1039#define GET_NOTE_INSN_NAME(NOTE_CODE) \ 1040 (note_insn_name[(NOTE_CODE)]) 1041 1042/* The name of a label, in case it corresponds to an explicit label 1043 in the input source code. */ 1044#define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) 1045 1046/* In jump.c, each label contains a count of the number 1047 of LABEL_REFs that point at it, so unused labels can be deleted. */ 1048#define LABEL_NUSES(RTX) XCINT (RTX, 5, CODE_LABEL) 1049 1050/* Labels carry a two-bit field composed of the ->jump and ->call 1051 bits. This field indicates whether the label is an alternate 1052 entry point, and if so, what kind. */ 1053enum label_kind 1054{ 1055 LABEL_NORMAL = 0, /* ordinary label */ 1056 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 1057 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 1058 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 1059}; 1060 1061#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 1062 1063/* Retrieve the kind of LABEL. */ 1064#define LABEL_KIND(LABEL) __extension__ \ 1065({ __typeof (LABEL) const _label = (LABEL); \ 1066 if (GET_CODE (_label) != CODE_LABEL) \ 1067 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 1068 __FUNCTION__); \ 1069 (enum label_kind) ((_label->jump << 1) | _label->call); }) 1070 1071/* Set the kind of LABEL. */ 1072#define SET_LABEL_KIND(LABEL, KIND) do { \ 1073 __typeof (LABEL) const _label = (LABEL); \ 1074 const unsigned int _kind = (KIND); \ 1075 if (GET_CODE (_label) != CODE_LABEL) \ 1076 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 1077 __FUNCTION__); \ 1078 _label->jump = ((_kind >> 1) & 1); \ 1079 _label->call = (_kind & 1); \ 1080} while (0) 1081 1082#else 1083 1084/* Retrieve the kind of LABEL. */ 1085#define LABEL_KIND(LABEL) \ 1086 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 1087 1088/* Set the kind of LABEL. */ 1089#define SET_LABEL_KIND(LABEL, KIND) do { \ 1090 rtx const _label = (LABEL); \ 1091 const unsigned int _kind = (KIND); \ 1092 _label->jump = ((_kind >> 1) & 1); \ 1093 _label->call = (_kind & 1); \ 1094} while (0) 1095 1096#endif /* rtl flag checking */ 1097 1098#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 1099 1100/* In jump.c, each JUMP_INSN can point to a label that it can jump to, 1101 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 1102 be decremented and possibly the label can be deleted. */ 1103#define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN) 1104 1105/* Once basic blocks are found, each CODE_LABEL starts a chain that 1106 goes through all the LABEL_REFs that jump to that label. The chain 1107 eventually winds up at the CODE_LABEL: it is circular. */ 1108#define LABEL_REFS(LABEL) XCEXP (LABEL, 4, CODE_LABEL) 1109 1110/* For a REG rtx, REGNO extracts the register number. REGNO can only 1111 be used on RHS. Use SET_REGNO to change the value. */ 1112#define REGNO(RTX) (rhs_regno(RTX)) 1113#define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N) 1114#define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N) 1115 1116/* ORIGINAL_REGNO holds the number the register originally had; for a 1117 pseudo register turned into a hard reg this will hold the old pseudo 1118 register number. */ 1119#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) 1120 1121/* Force the REGNO macro to only be used on the lhs. */ 1122static inline unsigned int 1123rhs_regno (const_rtx x) 1124{ 1125 return XCUINT (x, 0, REG); 1126} 1127 1128 1129/* 1 if RTX is a reg or parallel that is the current function's return 1130 value. */ 1131#define REG_FUNCTION_VALUE_P(RTX) \ 1132 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 1133 1134/* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 1135#define REG_USERVAR_P(RTX) \ 1136 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) 1137 1138/* 1 if RTX is a reg that holds a pointer value. */ 1139#define REG_POINTER(RTX) \ 1140 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) 1141 1142/* 1 if RTX is a mem that holds a pointer value. */ 1143#define MEM_POINTER(RTX) \ 1144 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) 1145 1146/* 1 if the given register REG corresponds to a hard register. */ 1147#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1148 1149/* 1 if the given register number REG_NO corresponds to a hard register. */ 1150#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1151 1152/* For a CONST_INT rtx, INTVAL extracts the integer. */ 1153#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) 1154#define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1155 1156/* For a CONST_DOUBLE: 1157 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1158 low-order word and ..._HIGH the high-order. 1159 For a float, there is a REAL_VALUE_TYPE structure, and 1160 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1161#define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1162#define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1163#define CONST_DOUBLE_REAL_VALUE(r) \ 1164 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1165 1166#define CONST_FIXED_VALUE(r) \ 1167 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode)) 1168#define CONST_FIXED_VALUE_HIGH(r) \ 1169 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high)) 1170#define CONST_FIXED_VALUE_LOW(r) \ 1171 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low)) 1172 1173/* For a CONST_VECTOR, return element #n. */ 1174#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1175 1176/* For a CONST_VECTOR, return the number of elements in a vector. */ 1177#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1178 1179/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1180 SUBREG_BYTE extracts the byte-number. */ 1181 1182#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1183#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1184 1185/* in rtlanal.c */ 1186/* Return the right cost to give to an operation 1187 to make the cost of the corresponding register-to-register instruction 1188 N times that of a fast register-to-register instruction. */ 1189#define COSTS_N_INSNS(N) ((N) * 4) 1190 1191/* Maximum cost of an rtl expression. This value has the special meaning 1192 not to use an rtx with this cost under any circumstances. */ 1193#define MAX_COST INT_MAX 1194 1195/* A structure to hold all available cost information about an rtl 1196 expression. */ 1197struct full_rtx_costs 1198{ 1199 int speed; 1200 int size; 1201}; 1202 1203/* Initialize a full_rtx_costs structure C to the maximum cost. */ 1204static inline void 1205init_costs_to_max (struct full_rtx_costs *c) 1206{ 1207 c->speed = MAX_COST; 1208 c->size = MAX_COST; 1209} 1210 1211/* Initialize a full_rtx_costs structure C to zero cost. */ 1212static inline void 1213init_costs_to_zero (struct full_rtx_costs *c) 1214{ 1215 c->speed = 0; 1216 c->size = 0; 1217} 1218 1219/* Compare two full_rtx_costs structures A and B, returning true 1220 if A < B when optimizing for speed. */ 1221static inline bool 1222costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b, 1223 bool speed) 1224{ 1225 if (speed) 1226 return (a->speed < b->speed 1227 || (a->speed == b->speed && a->size < b->size)); 1228 else 1229 return (a->size < b->size 1230 || (a->size == b->size && a->speed < b->speed)); 1231} 1232 1233/* Increase both members of the full_rtx_costs structure C by the 1234 cost of N insns. */ 1235static inline void 1236costs_add_n_insns (struct full_rtx_costs *c, int n) 1237{ 1238 c->speed += COSTS_N_INSNS (n); 1239 c->size += COSTS_N_INSNS (n); 1240} 1241 1242/* Information about an address. This structure is supposed to be able 1243 to represent all supported target addresses. Please extend it if it 1244 is not yet general enough. */ 1245struct address_info { 1246 /* The mode of the value being addressed, or VOIDmode if this is 1247 a load-address operation with no known address mode. */ 1248 enum machine_mode mode; 1249 1250 /* The address space. */ 1251 addr_space_t as; 1252 1253 /* A pointer to the top-level address. */ 1254 rtx *outer; 1255 1256 /* A pointer to the inner address, after all address mutations 1257 have been stripped from the top-level address. It can be one 1258 of the following: 1259 1260 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null. 1261 1262 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP 1263 points to the step value, depending on whether the step is variable 1264 or constant respectively. SEGMENT is null. 1265 1266 - A plain sum of the form SEGMENT + BASE + INDEX + DISP, 1267 with null fields evaluating to 0. */ 1268 rtx *inner; 1269 1270 /* Components that make up *INNER. Each one may be null or nonnull. 1271 When nonnull, their meanings are as follows: 1272 1273 - *SEGMENT is the "segment" of memory to which the address refers. 1274 This value is entirely target-specific and is only called a "segment" 1275 because that's its most typical use. It contains exactly one UNSPEC, 1276 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need 1277 reloading. 1278 1279 - *BASE is a variable expression representing a base address. 1280 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM. 1281 1282 - *INDEX is a variable expression representing an index value. 1283 It may be a scaled expression, such as a MULT. It has exactly 1284 one REG, SUBREG or MEM, pointed to by INDEX_TERM. 1285 1286 - *DISP is a constant, possibly mutated. DISP_TERM points to the 1287 unmutated RTX_CONST_OBJ. */ 1288 rtx *segment; 1289 rtx *base; 1290 rtx *index; 1291 rtx *disp; 1292 1293 rtx *segment_term; 1294 rtx *base_term; 1295 rtx *index_term; 1296 rtx *disp_term; 1297 1298 /* In a {PRE,POST}_MODIFY address, this points to a second copy 1299 of BASE_TERM, otherwise it is null. */ 1300 rtx *base_term2; 1301 1302 /* ADDRESS if this structure describes an address operand, MEM if 1303 it describes a MEM address. */ 1304 enum rtx_code addr_outer_code; 1305 1306 /* If BASE is nonnull, this is the code of the rtx that contains it. */ 1307 enum rtx_code base_outer_code; 1308 1309 /* True if this is an RTX_AUTOINC address. */ 1310 bool autoinc_p; 1311}; 1312 1313extern void init_rtlanal (void); 1314extern int rtx_cost (rtx, enum rtx_code, int, bool); 1315extern int address_cost (rtx, enum machine_mode, addr_space_t, bool); 1316extern void get_full_rtx_cost (rtx, enum rtx_code, int, 1317 struct full_rtx_costs *); 1318extern unsigned int subreg_lsb (const_rtx); 1319extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, 1320 unsigned int); 1321extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, 1322 unsigned int, enum machine_mode); 1323extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, 1324 unsigned int, enum machine_mode); 1325extern unsigned int subreg_regno (const_rtx); 1326extern int simplify_subreg_regno (unsigned int, enum machine_mode, 1327 unsigned int, enum machine_mode); 1328extern unsigned int subreg_nregs (const_rtx); 1329extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx); 1330extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, enum machine_mode); 1331extern unsigned int num_sign_bit_copies (const_rtx, enum machine_mode); 1332extern bool constant_pool_constant_p (rtx); 1333extern bool truncated_to_mode (enum machine_mode, const_rtx); 1334extern int low_bitmask_len (enum machine_mode, unsigned HOST_WIDE_INT); 1335extern void split_double (rtx, rtx *, rtx *); 1336extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0); 1337extern void decompose_address (struct address_info *, rtx *, 1338 enum machine_mode, addr_space_t, enum rtx_code); 1339extern void decompose_lea_address (struct address_info *, rtx *); 1340extern void decompose_mem_address (struct address_info *, rtx); 1341extern void update_address (struct address_info *); 1342extern HOST_WIDE_INT get_index_scale (const struct address_info *); 1343extern enum rtx_code get_index_code (const struct address_info *); 1344 1345#ifndef GENERATOR_FILE 1346/* Return the cost of SET X. SPEED_P is true if optimizing for speed 1347 rather than size. */ 1348 1349static inline int 1350set_rtx_cost (rtx x, bool speed_p) 1351{ 1352 return rtx_cost (x, INSN, 4, speed_p); 1353} 1354 1355/* Like set_rtx_cost, but return both the speed and size costs in C. */ 1356 1357static inline void 1358get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c) 1359{ 1360 get_full_rtx_cost (x, INSN, 4, c); 1361} 1362 1363/* Return the cost of moving X into a register, relative to the cost 1364 of a register move. SPEED_P is true if optimizing for speed rather 1365 than size. */ 1366 1367static inline int 1368set_src_cost (rtx x, bool speed_p) 1369{ 1370 return rtx_cost (x, SET, 1, speed_p); 1371} 1372 1373/* Like set_src_cost, but return both the speed and size costs in C. */ 1374 1375static inline void 1376get_full_set_src_cost (rtx x, struct full_rtx_costs *c) 1377{ 1378 get_full_rtx_cost (x, SET, 1, c); 1379} 1380#endif 1381 1382/* 1 if RTX is a subreg containing a reg that is already known to be 1383 sign- or zero-extended from the mode of the subreg to the mode of 1384 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 1385 extension. 1386 1387 When used as a LHS, is means that this extension must be done 1388 when assigning to SUBREG_REG. */ 1389 1390#define SUBREG_PROMOTED_VAR_P(RTX) \ 1391 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 1392 1393#define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ 1394do { \ 1395 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ 1396 if ((VAL) < 0) \ 1397 _rtx->volatil = 1; \ 1398 else { \ 1399 _rtx->volatil = 0; \ 1400 _rtx->unchanging = (VAL); \ 1401 } \ 1402} while (0) 1403 1404/* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case 1405 this gives the necessary extensions: 1406 0 - signed 1407 1 - normal unsigned 1408 -1 - pointer unsigned, which most often can be handled like unsigned 1409 extension, except for generating instructions where we need to 1410 emit special code (ptr_extend insns) on some architectures. */ 1411 1412#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 1413 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ 1414 ? -1 : (int) (RTX)->unchanging) 1415 1416/* Access various components of an ASM_OPERANDS rtx. */ 1417 1418#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 1419#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 1420#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 1421#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 1422#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 1423#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 1424#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 1425#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 1426 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 1427#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 1428 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 1429#define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 1430 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 1431#define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS) 1432#define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS) 1433#define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS) 1434#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS) 1435#define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT) 1436 1437/* 1 if RTX is a mem that is statically allocated in read-only memory. */ 1438#define MEM_READONLY_P(RTX) \ 1439 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging) 1440 1441/* 1 if RTX is a mem and we should keep the alias set for this mem 1442 unchanged when we access a component. Set to 1, or example, when we 1443 are already in a non-addressable component of an aggregate. */ 1444#define MEM_KEEP_ALIAS_SET_P(RTX) \ 1445 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 1446 1447/* 1 if RTX is a mem or asm_operand for a volatile reference. */ 1448#define MEM_VOLATILE_P(RTX) \ 1449 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 1450 ASM_INPUT)->volatil) 1451 1452/* 1 if RTX is a mem that cannot trap. */ 1453#define MEM_NOTRAP_P(RTX) \ 1454 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) 1455 1456/* The memory attribute block. We provide access macros for each value 1457 in the block and provide defaults if none specified. */ 1458#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 1459 1460/* The register attribute block. We provide access macros for each value 1461 in the block and provide defaults if none specified. */ 1462#define REG_ATTRS(RTX) X0REGATTR (RTX, 2) 1463 1464#ifndef GENERATOR_FILE 1465/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 1466 set, and may alias anything. Otherwise, the MEM can only alias 1467 MEMs in a conflicting alias set. This value is set in a 1468 language-dependent manner in the front-end, and should not be 1469 altered in the back-end. These set numbers are tested with 1470 alias_sets_conflict_p. */ 1471#define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias) 1472 1473/* For a MEM rtx, the decl it is known to refer to, if it is known to 1474 refer to part of a DECL. It may also be a COMPONENT_REF. */ 1475#define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr) 1476 1477/* For a MEM rtx, true if its MEM_OFFSET is known. */ 1478#define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p) 1479 1480/* For a MEM rtx, the offset from the start of MEM_EXPR. */ 1481#define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset) 1482 1483/* For a MEM rtx, the address space. */ 1484#define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace) 1485 1486/* For a MEM rtx, true if its MEM_SIZE is known. */ 1487#define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p) 1488 1489/* For a MEM rtx, the size in bytes of the MEM. */ 1490#define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size) 1491 1492/* For a MEM rtx, the alignment in bits. We can use the alignment of the 1493 mode as a default when STRICT_ALIGNMENT, but not if not. */ 1494#define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align) 1495#else 1496#define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC 1497#endif 1498 1499/* For a REG rtx, the decl it is known to refer to, if it is known to 1500 refer to part of a DECL. */ 1501#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 1502 1503/* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 1504 HOST_WIDE_INT. */ 1505#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 1506 1507/* Copy the attributes that apply to memory locations from RHS to LHS. */ 1508#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 1509 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 1510 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 1511 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 1512 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 1513 MEM_POINTER (LHS) = MEM_POINTER (RHS), \ 1514 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 1515 1516/* 1 if RTX is a label_ref for a nonlocal label. */ 1517/* Likewise in an expr_list for a REG_LABEL_OPERAND or 1518 REG_LABEL_TARGET note. */ 1519#define LABEL_REF_NONLOCAL_P(RTX) \ 1520 (RTL_FLAG_CHECK1("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil) 1521 1522/* 1 if RTX is a code_label that should always be considered to be needed. */ 1523#define LABEL_PRESERVE_P(RTX) \ 1524 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 1525 1526/* During sched, 1 if RTX is an insn that must be scheduled together 1527 with the preceding insn. */ 1528#define SCHED_GROUP_P(RTX) \ 1529 (RTL_FLAG_CHECK4("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \ 1530 JUMP_INSN, CALL_INSN \ 1531 )->in_struct) 1532 1533/* For a SET rtx, SET_DEST is the place that is set 1534 and SET_SRC is the value it is set to. */ 1535#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) 1536#define SET_SRC(RTX) XCEXP(RTX, 1, SET) 1537#define SET_IS_RETURN_P(RTX) \ 1538 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) 1539 1540/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 1541#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 1542#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 1543 1544/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 1545 conditionally executing the code on, COND_EXEC_CODE is the code 1546 to execute if the condition is true. */ 1547#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 1548#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 1549 1550/* 1 if RTX is a symbol_ref that addresses this function's rtl 1551 constants pool. */ 1552#define CONSTANT_POOL_ADDRESS_P(RTX) \ 1553 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 1554 1555/* 1 if RTX is a symbol_ref that addresses a value in the file's 1556 tree constant pool. This information is private to varasm.c. */ 1557#define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 1558 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ 1559 (RTX), SYMBOL_REF)->frame_related) 1560 1561/* Used if RTX is a symbol_ref, for machine-specific purposes. */ 1562#define SYMBOL_REF_FLAG(RTX) \ 1563 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 1564 1565/* 1 if RTX is a symbol_ref that has been the library function in 1566 emit_library_call. */ 1567#define SYMBOL_REF_USED(RTX) \ 1568 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 1569 1570/* 1 if RTX is a symbol_ref for a weak symbol. */ 1571#define SYMBOL_REF_WEAK(RTX) \ 1572 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 1573 1574/* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 1575 SYMBOL_REF_CONSTANT. */ 1576#define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2) 1577 1578/* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 1579 pool symbol. */ 1580#define SET_SYMBOL_REF_DECL(RTX, DECL) \ 1581 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL)) 1582 1583/* The tree (decl or constant) associated with the symbol, or null. */ 1584#define SYMBOL_REF_DECL(RTX) \ 1585 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2)) 1586 1587/* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 1588#define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 1589 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C)) 1590 1591/* The rtx constant pool entry for a symbol, or null. */ 1592#define SYMBOL_REF_CONSTANT(RTX) \ 1593 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL) 1594 1595/* A set of flags on a symbol_ref that are, in some respects, redundant with 1596 information derivable from the tree decl associated with this symbol. 1597 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 1598 decl. In some cases this is a bug. But beyond that, it's nice to cache 1599 this information to avoid recomputing it. Finally, this allows space for 1600 the target to store more than one bit of information, as with 1601 SYMBOL_REF_FLAG. */ 1602#define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) 1603 1604/* These flags are common enough to be defined for all targets. They 1605 are computed by the default version of targetm.encode_section_info. */ 1606 1607/* Set if this symbol is a function. */ 1608#define SYMBOL_FLAG_FUNCTION (1 << 0) 1609#define SYMBOL_REF_FUNCTION_P(RTX) \ 1610 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 1611/* Set if targetm.binds_local_p is true. */ 1612#define SYMBOL_FLAG_LOCAL (1 << 1) 1613#define SYMBOL_REF_LOCAL_P(RTX) \ 1614 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 1615/* Set if targetm.in_small_data_p is true. */ 1616#define SYMBOL_FLAG_SMALL (1 << 2) 1617#define SYMBOL_REF_SMALL_P(RTX) \ 1618 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 1619/* The three-bit field at [5:3] is true for TLS variables; use 1620 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 1621#define SYMBOL_FLAG_TLS_SHIFT 3 1622#define SYMBOL_REF_TLS_MODEL(RTX) \ 1623 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 1624/* Set if this symbol is not defined in this translation unit. */ 1625#define SYMBOL_FLAG_EXTERNAL (1 << 6) 1626#define SYMBOL_REF_EXTERNAL_P(RTX) \ 1627 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 1628/* Set if this symbol has a block_symbol structure associated with it. */ 1629#define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 1630#define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 1631 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 1632/* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 1633 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 1634#define SYMBOL_FLAG_ANCHOR (1 << 8) 1635#define SYMBOL_REF_ANCHOR_P(RTX) \ 1636 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 1637 1638/* Subsequent bits are available for the target to use. */ 1639#define SYMBOL_FLAG_MACH_DEP_SHIFT 9 1640#define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 1641 1642/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 1643 structure to which the symbol belongs, or NULL if it has not been 1644 assigned a block. */ 1645#define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 1646 1647/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 1648 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 1649 RTX has not yet been assigned to a block, or it has not been given an 1650 offset within that block. */ 1651#define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 1652 1653/* True if RTX is flagged to be a scheduling barrier. */ 1654#define PREFETCH_SCHEDULE_BARRIER_P(RTX) \ 1655 (RTL_FLAG_CHECK1("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil) 1656 1657/* Indicate whether the machine has any sort of auto increment addressing. 1658 If not, we can avoid checking for REG_INC notes. */ 1659 1660#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \ 1661 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \ 1662 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \ 1663 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG)) 1664#define AUTO_INC_DEC 1665#endif 1666 1667/* Define a macro to look for REG_INC notes, 1668 but save time on machines where they never exist. */ 1669 1670#ifdef AUTO_INC_DEC 1671#define FIND_REG_INC_NOTE(INSN, REG) \ 1672 ((REG) != NULL_RTX && REG_P ((REG)) \ 1673 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 1674 : find_reg_note ((INSN), REG_INC, (REG))) 1675#else 1676#define FIND_REG_INC_NOTE(INSN, REG) 0 1677#endif 1678 1679#ifndef HAVE_PRE_INCREMENT 1680#define HAVE_PRE_INCREMENT 0 1681#endif 1682 1683#ifndef HAVE_PRE_DECREMENT 1684#define HAVE_PRE_DECREMENT 0 1685#endif 1686 1687#ifndef HAVE_POST_INCREMENT 1688#define HAVE_POST_INCREMENT 0 1689#endif 1690 1691#ifndef HAVE_POST_DECREMENT 1692#define HAVE_POST_DECREMENT 0 1693#endif 1694 1695#ifndef HAVE_POST_MODIFY_DISP 1696#define HAVE_POST_MODIFY_DISP 0 1697#endif 1698 1699#ifndef HAVE_POST_MODIFY_REG 1700#define HAVE_POST_MODIFY_REG 0 1701#endif 1702 1703#ifndef HAVE_PRE_MODIFY_DISP 1704#define HAVE_PRE_MODIFY_DISP 0 1705#endif 1706 1707#ifndef HAVE_PRE_MODIFY_REG 1708#define HAVE_PRE_MODIFY_REG 0 1709#endif 1710 1711 1712/* Some architectures do not have complete pre/post increment/decrement 1713 instruction sets, or only move some modes efficiently. These macros 1714 allow us to tune autoincrement generation. */ 1715 1716#ifndef USE_LOAD_POST_INCREMENT 1717#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1718#endif 1719 1720#ifndef USE_LOAD_POST_DECREMENT 1721#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1722#endif 1723 1724#ifndef USE_LOAD_PRE_INCREMENT 1725#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1726#endif 1727 1728#ifndef USE_LOAD_PRE_DECREMENT 1729#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1730#endif 1731 1732#ifndef USE_STORE_POST_INCREMENT 1733#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1734#endif 1735 1736#ifndef USE_STORE_POST_DECREMENT 1737#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1738#endif 1739 1740#ifndef USE_STORE_PRE_INCREMENT 1741#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1742#endif 1743 1744#ifndef USE_STORE_PRE_DECREMENT 1745#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1746#endif 1747 1748/* Nonzero when we are generating CONCATs. */ 1749extern int generating_concat_p; 1750 1751/* Nonzero when we are expanding trees to RTL. */ 1752extern int currently_expanding_to_rtl; 1753 1754/* Generally useful functions. */ 1755 1756/* In explow.c */ 1757extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); 1758extern rtx plus_constant (enum machine_mode, rtx, HOST_WIDE_INT); 1759 1760/* In rtl.c */ 1761extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 1762#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 1763 1764extern rtvec rtvec_alloc (int); 1765extern rtvec shallow_copy_rtvec (rtvec); 1766extern bool shared_const_p (const_rtx); 1767extern rtx copy_rtx (rtx); 1768extern void dump_rtx_statistics (void); 1769 1770/* In emit-rtl.c */ 1771extern rtx copy_rtx_if_shared (rtx); 1772 1773/* In rtl.c */ 1774extern unsigned int rtx_size (const_rtx); 1775extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL); 1776#define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 1777extern int rtx_equal_p (const_rtx, const_rtx); 1778extern hashval_t iterative_hash_rtx (const_rtx, hashval_t); 1779 1780/* In emit-rtl.c */ 1781extern rtvec gen_rtvec_v (int, rtx *); 1782extern rtx gen_reg_rtx (enum machine_mode); 1783extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); 1784extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int); 1785extern rtx gen_reg_rtx_and_attrs (rtx); 1786extern rtx gen_label_rtx (void); 1787extern rtx gen_lowpart_common (enum machine_mode, rtx); 1788 1789/* In cse.c */ 1790extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); 1791 1792/* In emit-rtl.c */ 1793extern rtx gen_highpart (enum machine_mode, rtx); 1794extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); 1795extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); 1796 1797/* In emit-rtl.c */ 1798extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); 1799extern bool paradoxical_subreg_p (const_rtx); 1800extern int subreg_lowpart_p (const_rtx); 1801extern unsigned int subreg_lowpart_offset (enum machine_mode, 1802 enum machine_mode); 1803extern unsigned int subreg_highpart_offset (enum machine_mode, 1804 enum machine_mode); 1805extern int byte_lowpart_offset (enum machine_mode, enum machine_mode); 1806extern rtx make_safe_from (rtx, rtx); 1807extern rtx convert_memory_address_addr_space (enum machine_mode, rtx, 1808 addr_space_t); 1809#define convert_memory_address(to_mode,x) \ 1810 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC) 1811extern const char *get_insn_name (int); 1812extern rtx get_last_insn_anywhere (void); 1813extern rtx get_first_nonnote_insn (void); 1814extern rtx get_last_nonnote_insn (void); 1815extern void start_sequence (void); 1816extern void push_to_sequence (rtx); 1817extern void push_to_sequence2 (rtx, rtx); 1818extern void end_sequence (void); 1819extern double_int rtx_to_double_int (const_rtx); 1820extern rtx immed_double_int_const (double_int, enum machine_mode); 1821extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 1822 enum machine_mode); 1823 1824/* In loop-iv.c */ 1825 1826extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode); 1827 1828/* In varasm.c */ 1829extern rtx force_const_mem (enum machine_mode, rtx); 1830 1831/* In varasm.c */ 1832 1833struct function; 1834extern rtx get_pool_constant (rtx); 1835extern rtx get_pool_constant_mark (rtx, bool *); 1836extern enum machine_mode get_pool_mode (const_rtx); 1837extern rtx simplify_subtraction (rtx); 1838extern void decide_function_section (tree); 1839 1840/* In function.c */ 1841extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); 1842#define ASLK_REDUCE_ALIGN 1 1843#define ASLK_RECORD_PAD 2 1844extern rtx assign_stack_local_1 (enum machine_mode, HOST_WIDE_INT, int, int); 1845extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT); 1846extern rtx assign_stack_temp_for_type (enum machine_mode, HOST_WIDE_INT, tree); 1847extern rtx assign_temp (tree, int, int); 1848 1849/* In emit-rtl.c */ 1850extern rtx emit_insn_before (rtx, rtx); 1851extern rtx emit_insn_before_noloc (rtx, rtx, basic_block); 1852extern rtx emit_insn_before_setloc (rtx, rtx, int); 1853extern rtx emit_jump_insn_before (rtx, rtx); 1854extern rtx emit_jump_insn_before_noloc (rtx, rtx); 1855extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); 1856extern rtx emit_call_insn_before (rtx, rtx); 1857extern rtx emit_call_insn_before_noloc (rtx, rtx); 1858extern rtx emit_call_insn_before_setloc (rtx, rtx, int); 1859extern rtx emit_debug_insn_before (rtx, rtx); 1860extern rtx emit_debug_insn_before_noloc (rtx, rtx); 1861extern rtx emit_debug_insn_before_setloc (rtx, rtx, int); 1862extern rtx emit_barrier_before (rtx); 1863extern rtx emit_label_before (rtx, rtx); 1864extern rtx emit_note_before (enum insn_note, rtx); 1865extern rtx emit_insn_after (rtx, rtx); 1866extern rtx emit_insn_after_noloc (rtx, rtx, basic_block); 1867extern rtx emit_insn_after_setloc (rtx, rtx, int); 1868extern rtx emit_jump_insn_after (rtx, rtx); 1869extern rtx emit_jump_insn_after_noloc (rtx, rtx); 1870extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); 1871extern rtx emit_call_insn_after (rtx, rtx); 1872extern rtx emit_call_insn_after_noloc (rtx, rtx); 1873extern rtx emit_call_insn_after_setloc (rtx, rtx, int); 1874extern rtx emit_debug_insn_after (rtx, rtx); 1875extern rtx emit_debug_insn_after_noloc (rtx, rtx); 1876extern rtx emit_debug_insn_after_setloc (rtx, rtx, int); 1877extern rtx emit_barrier_after (rtx); 1878extern rtx emit_label_after (rtx, rtx); 1879extern rtx emit_note_after (enum insn_note, rtx); 1880extern rtx emit_insn (rtx); 1881extern rtx emit_debug_insn (rtx); 1882extern rtx emit_jump_insn (rtx); 1883extern rtx emit_call_insn (rtx); 1884extern rtx emit_label (rtx); 1885extern rtx emit_barrier (void); 1886extern rtx emit_note (enum insn_note); 1887extern rtx emit_note_copy (rtx); 1888extern rtx gen_clobber (rtx); 1889extern rtx emit_clobber (rtx); 1890extern rtx gen_use (rtx); 1891extern rtx emit_use (rtx); 1892extern rtx make_insn_raw (rtx); 1893extern void add_function_usage_to (rtx, rtx); 1894extern rtx last_call_insn (void); 1895extern rtx previous_insn (rtx); 1896extern rtx next_insn (rtx); 1897extern rtx prev_nonnote_insn (rtx); 1898extern rtx prev_nonnote_insn_bb (rtx); 1899extern rtx next_nonnote_insn (rtx); 1900extern rtx next_nonnote_insn_bb (rtx); 1901extern rtx prev_nondebug_insn (rtx); 1902extern rtx next_nondebug_insn (rtx); 1903extern rtx prev_nonnote_nondebug_insn (rtx); 1904extern rtx next_nonnote_nondebug_insn (rtx); 1905extern rtx prev_real_insn (rtx); 1906extern rtx next_real_insn (rtx); 1907extern rtx prev_active_insn (rtx); 1908extern rtx next_active_insn (rtx); 1909extern int active_insn_p (const_rtx); 1910extern rtx next_label (rtx); 1911extern rtx skip_consecutive_labels (rtx); 1912extern rtx next_cc0_user (rtx); 1913extern rtx prev_cc0_setter (rtx); 1914 1915/* In emit-rtl.c */ 1916extern int insn_line (const_rtx); 1917extern const char * insn_file (const_rtx); 1918extern tree insn_scope (const_rtx); 1919extern location_t prologue_location, epilogue_location; 1920 1921/* In jump.c */ 1922extern enum rtx_code reverse_condition (enum rtx_code); 1923extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 1924extern enum rtx_code swap_condition (enum rtx_code); 1925extern enum rtx_code unsigned_condition (enum rtx_code); 1926extern enum rtx_code signed_condition (enum rtx_code); 1927extern void mark_jump_label (rtx, rtx, int); 1928extern unsigned int cleanup_barriers (void); 1929 1930/* In jump.c */ 1931extern rtx delete_related_insns (rtx); 1932 1933/* In recog.c */ 1934extern rtx *find_constant_term_loc (rtx *); 1935 1936/* In emit-rtl.c */ 1937extern rtx try_split (rtx, rtx, int); 1938extern int split_branch_probability; 1939 1940/* In unknown file */ 1941extern rtx split_insns (rtx, rtx); 1942 1943/* In simplify-rtx.c */ 1944extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode, 1945 rtx, enum machine_mode); 1946extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, 1947 enum machine_mode); 1948extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode, 1949 rtx, rtx); 1950extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, 1951 rtx); 1952extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, 1953 enum machine_mode, rtx, rtx, rtx); 1954extern rtx simplify_const_relational_operation (enum rtx_code, 1955 enum machine_mode, rtx, rtx); 1956extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, 1957 enum machine_mode, rtx, rtx); 1958extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); 1959extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, 1960 enum machine_mode); 1961extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, 1962 enum machine_mode, rtx, rtx, rtx); 1963extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, 1964 enum machine_mode, rtx, rtx); 1965extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, 1966 unsigned int); 1967extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, 1968 unsigned int); 1969extern rtx simplify_replace_fn_rtx (rtx, const_rtx, 1970 rtx (*fn) (rtx, const_rtx, void *), void *); 1971extern rtx simplify_replace_rtx (rtx, const_rtx, rtx); 1972extern rtx simplify_rtx (const_rtx); 1973extern rtx avoid_constant_pool_reference (rtx); 1974extern rtx delegitimize_mem_from_attrs (rtx); 1975extern bool mode_signbit_p (enum machine_mode, const_rtx); 1976extern bool val_signbit_p (enum machine_mode, unsigned HOST_WIDE_INT); 1977extern bool val_signbit_known_set_p (enum machine_mode, 1978 unsigned HOST_WIDE_INT); 1979extern bool val_signbit_known_clear_p (enum machine_mode, 1980 unsigned HOST_WIDE_INT); 1981 1982/* In reginfo.c */ 1983extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 1984 bool); 1985 1986/* In emit-rtl.c */ 1987extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 1988extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx); 1989extern void set_insn_deleted (rtx); 1990 1991/* Functions in rtlanal.c */ 1992 1993/* Single set is implemented as macro for performance reasons. */ 1994#define single_set(I) (INSN_P (I) \ 1995 ? (GET_CODE (PATTERN (I)) == SET \ 1996 ? PATTERN (I) : single_set_1 (I)) \ 1997 : NULL_RTX) 1998#define single_set_1(I) single_set_2 (I, PATTERN (I)) 1999 2000/* Structure used for passing data to REPLACE_LABEL. */ 2001typedef struct replace_label_data 2002{ 2003 rtx r1; 2004 rtx r2; 2005 bool update_label_nuses; 2006} replace_label_data; 2007 2008extern enum machine_mode get_address_mode (rtx mem); 2009extern int rtx_addr_can_trap_p (const_rtx); 2010extern bool nonzero_address_p (const_rtx); 2011extern int rtx_unstable_p (const_rtx); 2012extern bool rtx_varies_p (const_rtx, bool); 2013extern bool rtx_addr_varies_p (const_rtx, bool); 2014extern rtx get_call_rtx_from (rtx); 2015extern HOST_WIDE_INT get_integer_term (const_rtx); 2016extern rtx get_related_value (const_rtx); 2017extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT); 2018extern void split_const (rtx, rtx *, rtx *); 2019extern bool unsigned_reg_p (rtx); 2020extern int reg_mentioned_p (const_rtx, const_rtx); 2021extern int count_occurrences (const_rtx, const_rtx, int); 2022extern int reg_referenced_p (const_rtx, const_rtx); 2023extern int reg_used_between_p (const_rtx, const_rtx, const_rtx); 2024extern int reg_set_between_p (const_rtx, const_rtx, const_rtx); 2025extern int commutative_operand_precedence (rtx); 2026extern bool swap_commutative_operands_p (rtx, rtx); 2027extern int modified_between_p (const_rtx, const_rtx, const_rtx); 2028extern int no_labels_between_p (const_rtx, const_rtx); 2029extern int modified_in_p (const_rtx, const_rtx); 2030extern int reg_set_p (const_rtx, const_rtx); 2031extern rtx single_set_2 (const_rtx, const_rtx); 2032extern int multiple_sets (const_rtx); 2033extern int set_noop_p (const_rtx); 2034extern int noop_move_p (const_rtx); 2035extern rtx find_last_value (rtx, rtx *, rtx, int); 2036extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *); 2037extern int reg_overlap_mentioned_p (const_rtx, const_rtx); 2038extern const_rtx set_of (const_rtx, const_rtx); 2039extern void record_hard_reg_sets (rtx, const_rtx, void *); 2040extern void record_hard_reg_uses (rtx *, void *); 2041#ifdef HARD_CONST 2042extern void find_all_hard_reg_sets (const_rtx, HARD_REG_SET *); 2043#endif 2044extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *); 2045extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 2046extern int dead_or_set_p (const_rtx, const_rtx); 2047extern int dead_or_set_regno_p (const_rtx, unsigned int); 2048extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx); 2049extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int); 2050extern rtx find_reg_equal_equiv_note (const_rtx); 2051extern rtx find_constant_src (const_rtx); 2052extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx); 2053extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int); 2054extern rtx alloc_reg_note (enum reg_note, rtx, rtx); 2055extern void add_reg_note (rtx, enum reg_note, rtx); 2056extern void remove_note (rtx, const_rtx); 2057extern void remove_reg_equal_equiv_notes (rtx); 2058extern void remove_reg_equal_equiv_notes_for_regno (unsigned int); 2059extern int side_effects_p (const_rtx); 2060extern int volatile_refs_p (const_rtx); 2061extern int volatile_insn_p (const_rtx); 2062extern int may_trap_p_1 (const_rtx, unsigned); 2063extern int may_trap_p (const_rtx); 2064extern int may_trap_or_fault_p (const_rtx); 2065extern bool can_throw_internal (const_rtx); 2066extern bool can_throw_external (const_rtx); 2067extern bool insn_could_throw_p (const_rtx); 2068extern bool insn_nothrow_p (const_rtx); 2069extern bool can_nonlocal_goto (const_rtx); 2070extern void copy_reg_eh_region_note_forward (rtx, rtx, rtx); 2071extern void copy_reg_eh_region_note_backward(rtx, rtx, rtx); 2072extern int inequality_comparisons_p (const_rtx); 2073extern rtx replace_rtx (rtx, rtx, rtx); 2074extern int replace_label (rtx *, void *); 2075extern int rtx_referenced_p (rtx, rtx); 2076extern bool tablejump_p (const_rtx, rtx *, rtx *); 2077extern int computed_jump_p (const_rtx); 2078 2079typedef int (*rtx_function) (rtx *, void *); 2080extern int for_each_rtx (rtx *, rtx_function, void *); 2081 2082/* Callback for for_each_inc_dec, to process the autoinc operation OP 2083 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is 2084 NULL. The callback is passed the same opaque ARG passed to 2085 for_each_inc_dec. Return zero to continue looking for other 2086 autoinc operations, -1 to skip OP's operands, and any other value 2087 to interrupt the traversal and return that value to the caller of 2088 for_each_inc_dec. */ 2089typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src, 2090 rtx srcoff, void *arg); 2091extern int for_each_inc_dec (rtx *, for_each_inc_dec_fn, void *arg); 2092 2093typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *, 2094 rtx *, rtx *); 2095extern int rtx_equal_p_cb (const_rtx, const_rtx, 2096 rtx_equal_p_callback_function); 2097 2098typedef int (*hash_rtx_callback_function) (const_rtx, enum machine_mode, rtx *, 2099 enum machine_mode *); 2100extern unsigned hash_rtx_cb (const_rtx, enum machine_mode, int *, int *, 2101 bool, hash_rtx_callback_function); 2102 2103extern rtx regno_use_in (unsigned int, rtx); 2104extern int auto_inc_p (const_rtx); 2105extern int in_expr_list_p (const_rtx, const_rtx); 2106extern void remove_node_from_expr_list (const_rtx, rtx *); 2107extern int loc_mentioned_in_p (rtx *, const_rtx); 2108extern rtx find_first_parameter_load (rtx, rtx); 2109extern bool keep_with_call_p (const_rtx); 2110extern bool label_is_jump_target_p (const_rtx, const_rtx); 2111extern int insn_rtx_cost (rtx, bool); 2112 2113/* Given an insn and condition, return a canonical description of 2114 the test being made. */ 2115extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int); 2116 2117/* Given a JUMP_INSN, return a canonical description of the test 2118 being made. */ 2119extern rtx get_condition (rtx, rtx *, int, int); 2120 2121/* Information about a subreg of a hard register. */ 2122struct subreg_info 2123{ 2124 /* Offset of first hard register involved in the subreg. */ 2125 int offset; 2126 /* Number of hard registers involved in the subreg. */ 2127 int nregs; 2128 /* Whether this subreg can be represented as a hard reg with the new 2129 mode. */ 2130 bool representable_p; 2131}; 2132 2133extern void subreg_get_info (unsigned int, enum machine_mode, 2134 unsigned int, enum machine_mode, 2135 struct subreg_info *); 2136 2137/* lists.c */ 2138 2139extern void free_EXPR_LIST_list (rtx *); 2140extern void free_INSN_LIST_list (rtx *); 2141extern void free_EXPR_LIST_node (rtx); 2142extern void free_INSN_LIST_node (rtx); 2143extern rtx alloc_INSN_LIST (rtx, rtx); 2144extern rtx copy_INSN_LIST (rtx); 2145extern rtx concat_INSN_LIST (rtx, rtx); 2146extern rtx alloc_EXPR_LIST (int, rtx, rtx); 2147extern void remove_free_INSN_LIST_elem (rtx, rtx *); 2148extern rtx remove_list_elem (rtx, rtx *); 2149extern rtx remove_free_INSN_LIST_node (rtx *); 2150extern rtx remove_free_EXPR_LIST_node (rtx *); 2151 2152 2153/* reginfo.c */ 2154 2155/* Resize reg info. */ 2156extern bool resize_reg_info (void); 2157/* Free up register info memory. */ 2158extern void free_reg_info (void); 2159extern void init_subregs_of_mode (void); 2160extern void finish_subregs_of_mode (void); 2161 2162/* recog.c */ 2163extern rtx extract_asm_operands (rtx); 2164extern int asm_noperands (const_rtx); 2165extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 2166 enum machine_mode *, location_t *); 2167 2168extern enum reg_class reg_preferred_class (int); 2169extern enum reg_class reg_alternate_class (int); 2170extern enum reg_class reg_allocno_class (int); 2171extern void setup_reg_classes (int, enum reg_class, enum reg_class, 2172 enum reg_class); 2173 2174extern void split_all_insns (void); 2175extern unsigned int split_all_insns_noflow (void); 2176 2177#define MAX_SAVED_CONST_INT 64 2178extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 2179 2180#define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 2181#define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 2182#define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 2183#define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 2184extern GTY(()) rtx const_true_rtx; 2185 2186extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE]; 2187 2188/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 2189 same as VOIDmode. */ 2190 2191#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 2192 2193/* Likewise, for the constants 1 and 2 and -1. */ 2194 2195#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 2196#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 2197#define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)]) 2198 2199extern GTY(()) rtx pc_rtx; 2200extern GTY(()) rtx cc0_rtx; 2201extern GTY(()) rtx ret_rtx; 2202extern GTY(()) rtx simple_return_rtx; 2203 2204/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 2205 is used to represent the frame pointer. This is because the 2206 hard frame pointer and the automatic variables are separated by an amount 2207 that cannot be determined until after register allocation. We can assume 2208 that in this case ELIMINABLE_REGS will be defined, one action of which 2209 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 2210#ifndef HARD_FRAME_POINTER_REGNUM 2211#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 2212#endif 2213 2214#ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER 2215#define HARD_FRAME_POINTER_IS_FRAME_POINTER \ 2216 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM) 2217#endif 2218 2219#ifndef HARD_FRAME_POINTER_IS_ARG_POINTER 2220#define HARD_FRAME_POINTER_IS_ARG_POINTER \ 2221 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM) 2222#endif 2223 2224/* Index labels for global_rtl. */ 2225enum global_rtl_index 2226{ 2227 GR_STACK_POINTER, 2228 GR_FRAME_POINTER, 2229/* For register elimination to work properly these hard_frame_pointer_rtx, 2230 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 2231 the same register. */ 2232#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 2233 GR_ARG_POINTER = GR_FRAME_POINTER, 2234#endif 2235#if HARD_FRAME_POINTER_IS_FRAME_POINTER 2236 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 2237#else 2238 GR_HARD_FRAME_POINTER, 2239#endif 2240#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 2241#if HARD_FRAME_POINTER_IS_ARG_POINTER 2242 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 2243#else 2244 GR_ARG_POINTER, 2245#endif 2246#endif 2247 GR_VIRTUAL_INCOMING_ARGS, 2248 GR_VIRTUAL_STACK_ARGS, 2249 GR_VIRTUAL_STACK_DYNAMIC, 2250 GR_VIRTUAL_OUTGOING_ARGS, 2251 GR_VIRTUAL_CFA, 2252 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY, 2253 2254 GR_MAX 2255}; 2256 2257/* Target-dependent globals. */ 2258struct GTY(()) target_rtl { 2259 /* All references to the hard registers in global_rtl_index go through 2260 these unique rtl objects. On machines where the frame-pointer and 2261 arg-pointer are the same register, they use the same unique object. 2262 2263 After register allocation, other rtl objects which used to be pseudo-regs 2264 may be clobbered to refer to the frame-pointer register. 2265 But references that were originally to the frame-pointer can be 2266 distinguished from the others because they contain frame_pointer_rtx. 2267 2268 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little 2269 tricky: until register elimination has taken place hard_frame_pointer_rtx 2270 should be used if it is being set, and frame_pointer_rtx otherwise. After 2271 register elimination hard_frame_pointer_rtx should always be used. 2272 On machines where the two registers are same (most) then these are the 2273 same. */ 2274 rtx x_global_rtl[GR_MAX]; 2275 2276 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */ 2277 rtx x_pic_offset_table_rtx; 2278 2279 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM). 2280 This is used to implement __builtin_return_address for some machines; 2281 see for instance the MIPS port. */ 2282 rtx x_return_address_pointer_rtx; 2283 2284 /* Commonly used RTL for hard registers. These objects are not 2285 necessarily unique, so we allocate them separately from global_rtl. 2286 They are initialized once per compilation unit, then copied into 2287 regno_reg_rtx at the beginning of each function. */ 2288 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER]; 2289 2290 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */ 2291 rtx x_top_of_stack[MAX_MACHINE_MODE]; 2292 2293 /* Static hunks of RTL used by the aliasing code; these are treated 2294 as persistent to avoid unnecessary RTL allocations. */ 2295 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER]; 2296 2297 /* The default memory attributes for each mode. */ 2298 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE]; 2299}; 2300 2301extern GTY(()) struct target_rtl default_target_rtl; 2302#if SWITCHABLE_TARGET 2303extern struct target_rtl *this_target_rtl; 2304#else 2305#define this_target_rtl (&default_target_rtl) 2306#endif 2307 2308#define global_rtl \ 2309 (this_target_rtl->x_global_rtl) 2310#define pic_offset_table_rtx \ 2311 (this_target_rtl->x_pic_offset_table_rtx) 2312#define return_address_pointer_rtx \ 2313 (this_target_rtl->x_return_address_pointer_rtx) 2314#define top_of_stack \ 2315 (this_target_rtl->x_top_of_stack) 2316#define mode_mem_attrs \ 2317 (this_target_rtl->x_mode_mem_attrs) 2318 2319/* All references to certain hard regs, except those created 2320 by allocating pseudo regs into them (when that's possible), 2321 go through these unique rtx objects. */ 2322#define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 2323#define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 2324#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 2325#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 2326 2327#ifndef GENERATOR_FILE 2328/* Return the attributes of a MEM rtx. */ 2329static inline struct mem_attrs * 2330get_mem_attrs (const_rtx x) 2331{ 2332 struct mem_attrs *attrs; 2333 2334 attrs = MEM_ATTRS (x); 2335 if (!attrs) 2336 attrs = mode_mem_attrs[(int) GET_MODE (x)]; 2337 return attrs; 2338} 2339#endif 2340 2341/* Include the RTL generation functions. */ 2342 2343#ifndef GENERATOR_FILE 2344#include "genrtl.h" 2345#undef gen_rtx_ASM_INPUT 2346#define gen_rtx_ASM_INPUT(MODE, ARG0) \ 2347 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0) 2348#define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \ 2349 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC)) 2350#endif 2351 2352/* There are some RTL codes that require special attention; the 2353 generation functions included above do the raw handling. If you 2354 add to this list, modify special_rtx in gengenrtl.c as well. */ 2355 2356extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); 2357extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); 2358extern rtx gen_raw_REG (enum machine_mode, int); 2359extern rtx gen_rtx_REG (enum machine_mode, unsigned); 2360extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); 2361extern rtx gen_rtx_MEM (enum machine_mode, rtx); 2362 2363#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 2364 2365/* Virtual registers are used during RTL generation to refer to locations into 2366 the stack frame when the actual location isn't known until RTL generation 2367 is complete. The routine instantiate_virtual_regs replaces these with 2368 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 2369 a constant. */ 2370 2371#define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 2372 2373/* This points to the first word of the incoming arguments passed on the stack, 2374 either by the caller or by the callee when pretending it was passed by the 2375 caller. */ 2376 2377#define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 2378 2379#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 2380 2381/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 2382 variable on the stack. Otherwise, it points to the first variable on 2383 the stack. */ 2384 2385#define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 2386 2387#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 2388 2389/* This points to the location of dynamically-allocated memory on the stack 2390 immediately after the stack pointer has been adjusted by the amount 2391 desired. */ 2392 2393#define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 2394 2395#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 2396 2397/* This points to the location in the stack at which outgoing arguments should 2398 be written when the stack is pre-pushed (arguments pushed using push 2399 insns always use sp). */ 2400 2401#define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 2402 2403#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 2404 2405/* This points to the Canonical Frame Address of the function. This 2406 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 2407 but is calculated relative to the arg pointer for simplicity; the 2408 frame pointer nor stack pointer are necessarily fixed relative to 2409 the CFA until after reload. */ 2410 2411#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 2412 2413#define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 2414 2415#define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 2416 2417/* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT 2418 when finalized. */ 2419 2420#define virtual_preferred_stack_boundary_rtx \ 2421 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY]) 2422 2423#define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \ 2424 ((FIRST_VIRTUAL_REGISTER) + 5) 2425 2426#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5) 2427 2428/* Nonzero if REGNUM is a pointer into the stack frame. */ 2429#define REGNO_PTR_FRAME_P(REGNUM) \ 2430 ((REGNUM) == STACK_POINTER_REGNUM \ 2431 || (REGNUM) == FRAME_POINTER_REGNUM \ 2432 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 2433 || (REGNUM) == ARG_POINTER_REGNUM \ 2434 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 2435 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER)) 2436 2437/* REGNUM never really appearing in the INSN stream. */ 2438#define INVALID_REGNUM (~(unsigned int) 0) 2439 2440/* REGNUM for which no debug information can be generated. */ 2441#define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1) 2442 2443extern rtx output_constant_def (tree, int); 2444extern rtx lookup_constant_def (tree); 2445 2446/* Nonzero after end of reload pass. 2447 Set to 1 or 0 by reload1.c. */ 2448 2449extern int reload_completed; 2450 2451/* Nonzero after thread_prologue_and_epilogue_insns has run. */ 2452extern int epilogue_completed; 2453 2454/* Set to 1 while reload_as_needed is operating. 2455 Required by some machines to handle any generated moves differently. */ 2456 2457extern int reload_in_progress; 2458 2459/* Set to 1 while in lra. */ 2460extern int lra_in_progress; 2461 2462/* This macro indicates whether you may create a new 2463 pseudo-register. */ 2464 2465#define can_create_pseudo_p() (!reload_in_progress && !reload_completed) 2466 2467#ifdef STACK_REGS 2468/* Nonzero after end of regstack pass. 2469 Set to 1 or 0 by reg-stack.c. */ 2470extern int regstack_completed; 2471#endif 2472 2473/* If this is nonzero, we do not bother generating VOLATILE 2474 around volatile memory references, and we are willing to 2475 output indirect addresses. If cse is to follow, we reject 2476 indirect addresses so a useful potential cse is generated; 2477 if it is used only once, instruction combination will produce 2478 the same indirect address eventually. */ 2479extern int cse_not_expected; 2480 2481/* Translates rtx code to tree code, for those codes needed by 2482 REAL_ARITHMETIC. The function returns an int because the caller may not 2483 know what `enum tree_code' means. */ 2484 2485extern int rtx_to_tree_code (enum rtx_code); 2486 2487/* In cse.c */ 2488extern int delete_trivially_dead_insns (rtx, int); 2489extern int exp_equiv_p (const_rtx, const_rtx, int, bool); 2490extern unsigned hash_rtx (const_rtx x, enum machine_mode, int *, int *, bool); 2491 2492/* In dse.c */ 2493extern bool check_for_inc_dec (rtx insn); 2494 2495/* In jump.c */ 2496extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 2497extern bool jump_to_label_p (rtx); 2498extern int condjump_p (const_rtx); 2499extern int any_condjump_p (const_rtx); 2500extern int any_uncondjump_p (const_rtx); 2501extern rtx pc_set (const_rtx); 2502extern rtx condjump_label (const_rtx); 2503extern int simplejump_p (const_rtx); 2504extern int returnjump_p (rtx); 2505extern int eh_returnjump_p (rtx); 2506extern int onlyjump_p (const_rtx); 2507extern int only_sets_cc0_p (const_rtx); 2508extern int sets_cc0_p (const_rtx); 2509extern int invert_jump_1 (rtx, rtx); 2510extern int invert_jump (rtx, rtx, int); 2511extern int rtx_renumbered_equal_p (const_rtx, const_rtx); 2512extern int true_regnum (const_rtx); 2513extern unsigned int reg_or_subregno (const_rtx); 2514extern int redirect_jump_1 (rtx, rtx); 2515extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 2516extern int redirect_jump (rtx, rtx, int); 2517extern void rebuild_jump_labels (rtx); 2518extern void rebuild_jump_labels_chain (rtx); 2519extern rtx reversed_comparison (const_rtx, enum machine_mode); 2520extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx); 2521extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx, 2522 const_rtx, const_rtx); 2523extern void delete_for_peephole (rtx, rtx); 2524extern int condjump_in_parallel_p (const_rtx); 2525 2526/* In emit-rtl.c. */ 2527extern int max_reg_num (void); 2528extern int max_label_num (void); 2529extern int get_first_label_num (void); 2530extern void maybe_set_first_label_num (rtx); 2531extern void delete_insns_since (rtx); 2532extern void mark_reg_pointer (rtx, int); 2533extern void mark_user_reg (rtx); 2534extern void reset_used_flags (rtx); 2535extern void set_used_flags (rtx); 2536extern void reorder_insns (rtx, rtx, rtx); 2537extern void reorder_insns_nobb (rtx, rtx, rtx); 2538extern int get_max_insn_count (void); 2539extern int in_sequence_p (void); 2540extern void init_emit (void); 2541extern void init_emit_regs (void); 2542extern void init_emit_once (void); 2543extern void push_topmost_sequence (void); 2544extern void pop_topmost_sequence (void); 2545extern void set_new_first_and_last_insn (rtx, rtx); 2546extern unsigned int unshare_all_rtl (void); 2547extern void unshare_all_rtl_again (rtx); 2548extern void unshare_all_rtl_in_chain (rtx); 2549extern void verify_rtl_sharing (void); 2550extern void link_cc0_insns (rtx); 2551extern void add_insn (rtx); 2552extern void add_insn_before (rtx, rtx, basic_block); 2553extern void add_insn_after (rtx, rtx, basic_block); 2554extern void remove_insn (rtx); 2555extern rtx emit (rtx); 2556extern void delete_insn (rtx); 2557extern rtx entry_of_function (void); 2558extern void emit_insn_at_entry (rtx); 2559extern void delete_insn_chain (rtx, rtx, bool); 2560extern rtx unlink_insn_chain (rtx, rtx); 2561extern void delete_insn_and_edges (rtx); 2562extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); 2563extern rtx gen_const_mem (enum machine_mode, rtx); 2564extern rtx gen_frame_mem (enum machine_mode, rtx); 2565extern rtx gen_tmp_stack_mem (enum machine_mode, rtx); 2566extern bool validate_subreg (enum machine_mode, enum machine_mode, 2567 const_rtx, unsigned int); 2568 2569/* In combine.c */ 2570extern unsigned int extended_count (const_rtx, enum machine_mode, int); 2571extern rtx remove_death (unsigned int, rtx); 2572extern void dump_combine_stats (FILE *); 2573extern void dump_combine_total_stats (FILE *); 2574extern rtx make_compound_operation (rtx, enum rtx_code); 2575 2576/* In cfgcleanup.c */ 2577extern void delete_dead_jumptables (void); 2578 2579/* In sched-rgn.c. */ 2580extern void schedule_insns (void); 2581 2582/* In sched-ebb.c. */ 2583extern void schedule_ebbs (void); 2584 2585/* In sel-sched-dump.c. */ 2586extern void sel_sched_fix_param (const char *param, const char *val); 2587 2588/* In print-rtl.c */ 2589extern const char *print_rtx_head; 2590extern void debug_rtx (const_rtx); 2591extern void debug_rtx_list (const_rtx, int); 2592extern void debug_rtx_range (const_rtx, const_rtx); 2593extern const_rtx debug_rtx_find (const_rtx, int); 2594extern void print_mem_expr (FILE *, const_tree); 2595extern void print_rtl (FILE *, const_rtx); 2596extern void print_simple_rtl (FILE *, const_rtx); 2597extern int print_rtl_single (FILE *, const_rtx); 2598extern int print_rtl_single_with_indent (FILE *, const_rtx, int); 2599extern void print_inline_rtx (FILE *, const_rtx, int); 2600 2601/* Functions in sched-vis.c. FIXME: Ideally these functions would 2602 not be in sched-vis.c but in rtl.c, because they are not only used 2603 by the scheduler anymore but for all "slim" RTL dumping. */ 2604extern void dump_value_slim (FILE *, const_rtx, int); 2605extern void dump_insn_slim (FILE *, const_rtx); 2606extern void dump_rtl_slim (FILE *, const_rtx, const_rtx, int, int); 2607extern void print_value (pretty_printer *, const_rtx, int); 2608extern void print_pattern (pretty_printer *, const_rtx, int); 2609extern void print_insn (pretty_printer *, const_rtx, int); 2610extern void rtl_dump_bb_for_graph (pretty_printer *, basic_block); 2611extern const char *str_pattern_slim (const_rtx); 2612 2613/* In function.c */ 2614extern void reposition_prologue_and_epilogue_notes (void); 2615extern int prologue_epilogue_contains (const_rtx); 2616extern int sibcall_epilogue_contains (const_rtx); 2617extern void update_temp_slot_address (rtx, rtx); 2618extern void maybe_copy_prologue_epilogue_insn (rtx, rtx); 2619extern void set_return_jump_label (rtx); 2620 2621/* In stmt.c */ 2622extern void expand_null_return (void); 2623extern void expand_naked_return (void); 2624extern void emit_jump (rtx); 2625 2626/* In expr.c */ 2627extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 2628 unsigned int, int); 2629extern HOST_WIDE_INT find_args_size_adjust (rtx); 2630extern int fixup_args_size_notes (rtx, rtx, int); 2631 2632/* In cfgrtl.c */ 2633extern void print_rtl_with_bb (FILE *, const_rtx, int); 2634extern rtx duplicate_insn_chain (rtx, rtx); 2635 2636/* In expmed.c */ 2637extern void init_expmed (void); 2638extern void expand_inc (rtx, rtx); 2639extern void expand_dec (rtx, rtx); 2640 2641/* In lower-subreg.c */ 2642extern void init_lower_subreg (void); 2643 2644/* In gcse.c */ 2645extern bool can_copy_p (enum machine_mode); 2646extern bool can_assign_to_reg_without_clobbers_p (rtx); 2647extern rtx fis_get_condition (rtx); 2648 2649/* In ira.c */ 2650#ifdef HARD_CONST 2651extern HARD_REG_SET eliminable_regset; 2652#endif 2653extern void mark_elimination (int, int); 2654 2655/* In reginfo.c */ 2656extern int reg_classes_intersect_p (reg_class_t, reg_class_t); 2657extern int reg_class_subset_p (reg_class_t, reg_class_t); 2658extern void globalize_reg (tree, int); 2659extern void init_reg_modes_target (void); 2660extern void init_regs (void); 2661extern void reinit_regs (void); 2662extern void init_fake_stack_mems (void); 2663extern void save_register_info (void); 2664extern void init_reg_sets (void); 2665extern void regclass (rtx, int); 2666extern void reg_scan (rtx, unsigned int); 2667extern void fix_register (const char *, int, int); 2668extern bool invalid_mode_change_p (unsigned int, enum reg_class); 2669 2670/* In reorg.c */ 2671extern void dbr_schedule (rtx); 2672 2673/* In reload1.c */ 2674extern int function_invariant_p (const_rtx); 2675 2676/* In calls.c */ 2677enum libcall_type 2678{ 2679 LCT_NORMAL = 0, 2680 LCT_CONST = 1, 2681 LCT_PURE = 2, 2682 LCT_NORETURN = 3, 2683 LCT_THROW = 4, 2684 LCT_RETURNS_TWICE = 5 2685}; 2686 2687extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, 2688 ...); 2689extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 2690 enum machine_mode, int, ...); 2691 2692/* In varasm.c */ 2693extern void init_varasm_once (void); 2694 2695extern rtx make_debug_expr_from_rtl (const_rtx); 2696 2697/* In read-rtl.c */ 2698extern bool read_rtx (const char *, rtx *); 2699 2700/* In alias.c */ 2701extern rtx canon_rtx (rtx); 2702extern int true_dependence (const_rtx, enum machine_mode, const_rtx); 2703extern rtx get_addr (rtx); 2704extern int canon_true_dependence (const_rtx, enum machine_mode, rtx, 2705 const_rtx, rtx); 2706extern int read_dependence (const_rtx, const_rtx); 2707extern int anti_dependence (const_rtx, const_rtx); 2708extern int canon_anti_dependence (const_rtx, bool, 2709 const_rtx, enum machine_mode, rtx); 2710extern int output_dependence (const_rtx, const_rtx); 2711extern int may_alias_p (const_rtx, const_rtx); 2712extern void init_alias_target (void); 2713extern void init_alias_analysis (void); 2714extern void end_alias_analysis (void); 2715extern void vt_equate_reg_base_value (const_rtx, const_rtx); 2716extern bool memory_modified_in_insn_p (const_rtx, const_rtx); 2717extern bool memory_must_be_modified_in_insn_p (const_rtx, const_rtx); 2718extern bool may_be_sp_based_p (rtx); 2719extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); 2720extern rtx get_reg_known_value (unsigned int); 2721extern bool get_reg_known_equiv_p (unsigned int); 2722extern rtx get_reg_base_value (unsigned int); 2723 2724#ifdef STACK_REGS 2725extern int stack_regs_mentioned (const_rtx insn); 2726#endif 2727 2728/* In toplev.c */ 2729extern GTY(()) rtx stack_limit_rtx; 2730 2731/* In predict.c */ 2732extern void invert_br_probabilities (rtx); 2733extern bool expensive_function_p (int); 2734 2735/* In var-tracking.c */ 2736extern unsigned int variable_tracking_main (void); 2737 2738/* In stor-layout.c. */ 2739extern void get_mode_bounds (enum machine_mode, int, enum machine_mode, 2740 rtx *, rtx *); 2741 2742/* In loop-unswitch.c */ 2743extern rtx reversed_condition (rtx); 2744extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); 2745 2746/* In loop-iv.c */ 2747extern rtx canon_condition (rtx); 2748extern void simplify_using_condition (rtx, rtx *, bitmap); 2749 2750/* In final.c */ 2751extern unsigned int compute_alignments (void); 2752extern int asm_str_count (const char *templ); 2753 2754struct rtl_hooks 2755{ 2756 rtx (*gen_lowpart) (enum machine_mode, rtx); 2757 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx); 2758 rtx (*reg_nonzero_bits) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2759 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 2760 rtx (*reg_num_sign_bit_copies) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2761 unsigned int, unsigned int *); 2762 bool (*reg_truncated_to_mode) (enum machine_mode, const_rtx); 2763 2764 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 2765}; 2766 2767/* Each pass can provide its own. */ 2768extern struct rtl_hooks rtl_hooks; 2769 2770/* ... but then it has to restore these. */ 2771extern const struct rtl_hooks general_rtl_hooks; 2772 2773/* Keep this for the nonce. */ 2774#define gen_lowpart rtl_hooks.gen_lowpart 2775 2776extern void insn_locations_init (void); 2777extern void insn_locations_finalize (void); 2778extern void set_curr_insn_location (location_t); 2779extern location_t curr_insn_location (void); 2780extern bool optimize_insn_for_size_p (void); 2781extern bool optimize_insn_for_speed_p (void); 2782 2783/* rtl-error.c */ 2784extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *) 2785 ATTRIBUTE_NORETURN; 2786extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *) 2787 ATTRIBUTE_NORETURN; 2788 2789#define fatal_insn(msgid, insn) \ 2790 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__) 2791#define fatal_insn_not_found(insn) \ 2792 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__) 2793 2794/* reginfo.c */ 2795extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER]; 2796 2797 2798#endif /* ! GCC_RTL_H */ 2799