1 /* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987-2013 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_RTL_H 21 #define GCC_RTL_H 22 23 #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 40 enum 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 60 enum 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 98 extern const unsigned char rtx_length[NUM_RTX_CODE]; 99 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 100 101 extern const char * const rtx_name[NUM_RTX_CODE]; 102 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 103 104 extern const char * const rtx_format[NUM_RTX_CODE]; 105 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 106 107 extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 108 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 109 110 extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 111 extern const unsigned char rtx_next[NUM_RTX_CODE]; 112 113 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 115 relative to which the offsets are calculated, as explained in rtl.def. */ 116 typedef struct 117 { 118 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 119 unsigned min_align: 8; 120 /* Flags: */ 121 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 122 unsigned min_after_vec: 1; /* minimum address target label is 123 after the ADDR_DIFF_VEC. */ 124 unsigned max_after_vec: 1; /* maximum address target label is 125 after the ADDR_DIFF_VEC. */ 126 unsigned min_after_base: 1; /* minimum address target label is 127 after BASE. */ 128 unsigned max_after_base: 1; /* maximum address target label is 129 after BASE. */ 130 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 131 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 132 unsigned : 2; 133 unsigned scale : 8; 134 } addr_diff_vec_flags; 135 136 /* Structure used to describe the attributes of a MEM. These are hashed 137 so MEMs that the same attributes share a data structure. This means 138 they cannot be modified in place. */ 139 typedef struct GTY(()) mem_attrs 140 { 141 /* The expression that the MEM accesses, or null if not known. 142 This expression might be larger than the memory reference itself. 143 (In other words, the MEM might access only part of the object.) */ 144 tree expr; 145 146 /* The offset of the memory reference from the start of EXPR. 147 Only valid if OFFSET_KNOWN_P. */ 148 HOST_WIDE_INT offset; 149 150 /* The size of the memory reference in bytes. Only valid if 151 SIZE_KNOWN_P. */ 152 HOST_WIDE_INT size; 153 154 /* The alias set of the memory reference. */ 155 alias_set_type alias; 156 157 /* The alignment of the reference in bits. Always a multiple of 158 BITS_PER_UNIT. Note that EXPR may have a stricter alignment 159 than the memory reference itself. */ 160 unsigned int align; 161 162 /* The address space that the memory reference uses. */ 163 unsigned char addrspace; 164 165 /* True if OFFSET is known. */ 166 bool offset_known_p; 167 168 /* True if SIZE is known. */ 169 bool size_known_p; 170 } mem_attrs; 171 172 /* Structure used to describe the attributes of a REG in similar way as 173 mem_attrs does for MEM above. Note that the OFFSET field is calculated 174 in the same way as for mem_attrs, rather than in the same way as a 175 SUBREG_BYTE. For example, if a big-endian target stores a byte 176 object in the low part of a 4-byte register, the OFFSET field 177 will be -3 rather than 0. */ 178 179 typedef struct GTY(()) reg_attrs { 180 tree decl; /* decl corresponding to REG. */ 181 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 182 } reg_attrs; 183 184 /* Common union for an element of an rtx. */ 185 186 union rtunion_def 187 { 188 int rt_int; 189 unsigned int rt_uint; 190 const char *rt_str; 191 rtx rt_rtx; 192 rtvec rt_rtvec; 193 enum machine_mode rt_type; 194 addr_diff_vec_flags rt_addr_diff_vec_flags; 195 struct cselib_val_struct *rt_cselib; 196 tree rt_tree; 197 basic_block rt_bb; 198 mem_attrs *rt_mem; 199 reg_attrs *rt_reg; 200 struct constant_descriptor_rtx *rt_constant; 201 struct dw_cfi_struct *rt_cfi; 202 }; 203 typedef union rtunion_def rtunion; 204 205 /* This structure remembers the position of a SYMBOL_REF within an 206 object_block structure. A SYMBOL_REF only provides this information 207 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 208 struct GTY(()) block_symbol { 209 /* The usual SYMBOL_REF fields. */ 210 rtunion GTY ((skip)) fld[3]; 211 212 /* The block that contains this object. */ 213 struct object_block *block; 214 215 /* The offset of this object from the start of its block. It is negative 216 if the symbol has not yet been assigned an offset. */ 217 HOST_WIDE_INT offset; 218 }; 219 220 /* Describes a group of objects that are to be placed together in such 221 a way that their relative positions are known. */ 222 struct GTY(()) object_block { 223 /* The section in which these objects should be placed. */ 224 section *sect; 225 226 /* The alignment of the first object, measured in bits. */ 227 unsigned int alignment; 228 229 /* The total size of the objects, measured in bytes. */ 230 HOST_WIDE_INT size; 231 232 /* The SYMBOL_REFs for each object. The vector is sorted in 233 order of increasing offset and the following conditions will 234 hold for each element X: 235 236 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 237 !SYMBOL_REF_ANCHOR_P (X) 238 SYMBOL_REF_BLOCK (X) == [address of this structure] 239 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 240 vec<rtx, va_gc> *objects; 241 242 /* All the anchor SYMBOL_REFs used to address these objects, sorted 243 in order of increasing offset, and then increasing TLS model. 244 The following conditions will hold for each element X in this vector: 245 246 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 247 SYMBOL_REF_ANCHOR_P (X) 248 SYMBOL_REF_BLOCK (X) == [address of this structure] 249 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 250 vec<rtx, va_gc> *anchors; 251 }; 252 253 /* RTL expression ("rtx"). */ 254 255 struct GTY((chain_next ("RTX_NEXT (&%h)"), 256 chain_prev ("RTX_PREV (&%h)"), variable_size)) rtx_def { 257 /* The kind of expression this is. */ 258 ENUM_BITFIELD(rtx_code) code: 16; 259 260 /* The kind of value the expression has. */ 261 ENUM_BITFIELD(machine_mode) mode : 8; 262 263 /* 1 in a MEM if we should keep the alias set for this mem unchanged 264 when we access a component. 265 1 in a CALL_INSN if it is a sibling call. 266 1 in a SET that is for a return. 267 In a CODE_LABEL, part of the two-bit alternate entry field. 268 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c. 269 1 in a VALUE is SP_BASED_VALUE_P in cselib.c. */ 270 unsigned int jump : 1; 271 /* In a CODE_LABEL, part of the two-bit alternate entry field. 272 1 in a MEM if it cannot trap. 273 1 in a CALL_INSN logically equivalent to 274 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 275 unsigned int call : 1; 276 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 277 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 278 1 in a SYMBOL_REF if it addresses something in the per-function 279 constants pool. 280 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY. 281 1 in a NOTE, or EXPR_LIST for a const call. 282 1 in a JUMP_INSN of an annulling branch. 283 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c. 284 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c. 285 1 in a clobber temporarily created for LRA. */ 286 unsigned int unchanging : 1; 287 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 288 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 289 if it has been deleted. 290 1 in a REG expression if corresponds to a variable declared by the user, 291 0 for an internally generated temporary. 292 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 293 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a 294 non-local label. 295 In a SYMBOL_REF, this flag is used for machine-specific purposes. 296 In a PREFETCH, this flag indicates that it should be considered a scheduling 297 barrier. 298 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */ 299 unsigned int volatil : 1; 300 /* 1 in a REG if the register is used only in exit code a loop. 301 1 in a SUBREG expression if was generated from a variable with a 302 promoted mode. 303 1 in a CODE_LABEL if the label is used for nonlocal gotos 304 and must not be deleted even if its count is zero. 305 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 306 together with the preceding insn. Valid only within sched. 307 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 308 from the target of a branch. Valid from reorg until end of compilation; 309 cleared before used. 310 311 The name of the field is historical. It used to be used in MEMs 312 to record whether the MEM accessed part of a structure. */ 313 unsigned int in_struct : 1; 314 /* At the end of RTL generation, 1 if this rtx is used. This is used for 315 copying shared structure. See `unshare_all_rtl'. 316 In a REG, this is not needed for that purpose, and used instead 317 in `leaf_renumber_regs_insn'. 318 1 in a SYMBOL_REF, means that emit_library_call 319 has used it as the function. 320 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c. 321 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */ 322 unsigned int used : 1; 323 /* 1 in an INSN or a SET if this rtx is related to the call frame, 324 either changing how we compute the frame address or saving and 325 restoring registers in the prologue and epilogue. 326 1 in a REG or MEM if it is a pointer. 327 1 in a SYMBOL_REF if it addresses something in the per-function 328 constant string pool. 329 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */ 330 unsigned frame_related : 1; 331 /* 1 in a REG or PARALLEL that is the current function's return value. 332 1 in a SYMBOL_REF for a weak symbol. 333 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. 334 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c. 335 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */ 336 unsigned return_val : 1; 337 338 /* The first element of the operands of this rtx. 339 The number of operands and their types are controlled 340 by the `code' field, according to rtl.def. */ 341 union u { 342 rtunion fld[1]; 343 HOST_WIDE_INT hwint[1]; 344 struct block_symbol block_sym; 345 struct real_value rv; 346 struct fixed_value fv; 347 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 348 }; 349 350 /* The size in bytes of an rtx header (code, mode and flags). */ 351 #define RTX_HDR_SIZE offsetof (struct rtx_def, u) 352 353 /* The size in bytes of an rtx with code CODE. */ 354 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 355 356 #define NULL_RTX (rtx) 0 357 358 /* The "next" and "previous" RTX, relative to this one. */ 359 360 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 361 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 362 363 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 364 */ 365 #define RTX_PREV(X) ((INSN_P (X) \ 366 || NOTE_P (X) \ 367 || BARRIER_P (X) \ 368 || LABEL_P (X)) \ 369 && PREV_INSN (X) != NULL \ 370 && NEXT_INSN (PREV_INSN (X)) == X \ 371 ? PREV_INSN (X) : NULL) 372 373 /* Define macros to access the `code' field of the rtx. */ 374 375 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 376 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 377 378 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) 379 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 380 381 /* RTL vector. These appear inside RTX's when there is a need 382 for a variable number of things. The principle use is inside 383 PARALLEL expressions. */ 384 385 struct GTY((variable_size)) rtvec_def { 386 int num_elem; /* number of elements */ 387 rtx GTY ((length ("%h.num_elem"))) elem[1]; 388 }; 389 390 #define NULL_RTVEC (rtvec) 0 391 392 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 393 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 394 395 /* Predicate yielding nonzero iff X is an rtx for a register. */ 396 #define REG_P(X) (GET_CODE (X) == REG) 397 398 /* Predicate yielding nonzero iff X is an rtx for a memory location. */ 399 #define MEM_P(X) (GET_CODE (X) == MEM) 400 401 /* Match CONST_*s that can represent compile-time constant integers. */ 402 #define CASE_CONST_SCALAR_INT \ 403 case CONST_INT: \ 404 case CONST_DOUBLE 405 406 /* Match CONST_*s for which pointer equality corresponds to value equality. */ 407 #define CASE_CONST_UNIQUE \ 408 case CONST_INT: \ 409 case CONST_DOUBLE: \ 410 case CONST_FIXED 411 412 /* Match all CONST_* rtxes. */ 413 #define CASE_CONST_ANY \ 414 case CONST_INT: \ 415 case CONST_DOUBLE: \ 416 case CONST_FIXED: \ 417 case CONST_VECTOR 418 419 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 420 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 421 422 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */ 423 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED) 424 425 /* Predicate yielding true iff X is an rtx for a double-int 426 or floating point constant. */ 427 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE) 428 429 /* Predicate yielding true iff X is an rtx for a double-int. */ 430 #define CONST_DOUBLE_AS_INT_P(X) \ 431 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode) 432 433 /* Predicate yielding true iff X is an rtx for a integer const. */ 434 #define CONST_SCALAR_INT_P(X) \ 435 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X)) 436 437 /* Predicate yielding true iff X is an rtx for a double-int. */ 438 #define CONST_DOUBLE_AS_FLOAT_P(X) \ 439 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode) 440 441 /* Predicate yielding nonzero iff X is a label insn. */ 442 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 443 444 /* Predicate yielding nonzero iff X is a jump insn. */ 445 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 446 447 /* Predicate yielding nonzero iff X is a call insn. */ 448 #define CALL_P(X) (GET_CODE (X) == CALL_INSN) 449 450 /* Predicate yielding nonzero iff X is an insn that cannot jump. */ 451 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 452 453 /* Predicate yielding nonzero iff X is a debug note/insn. */ 454 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN) 455 456 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */ 457 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) 458 459 /* Nonzero if DEBUG_INSN_P may possibly hold. */ 460 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments) 461 462 /* Predicate yielding nonzero iff X is a real insn. */ 463 #define INSN_P(X) \ 464 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 465 466 /* Predicate yielding nonzero iff X is a note insn. */ 467 #define NOTE_P(X) (GET_CODE (X) == NOTE) 468 469 /* Predicate yielding nonzero iff X is a barrier insn. */ 470 #define BARRIER_P(X) (GET_CODE (X) == BARRIER) 471 472 /* Predicate yielding nonzero iff X is a data for a jump table. */ 473 #define JUMP_TABLE_DATA_P(INSN) \ 474 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ 475 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) 476 477 /* Predicate yielding nonzero iff X is a return or simple_return. */ 478 #define ANY_RETURN_P(X) \ 479 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN) 480 481 /* 1 if X is a unary operator. */ 482 483 #define UNARY_P(X) \ 484 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 485 486 /* 1 if X is a binary operator. */ 487 488 #define BINARY_P(X) \ 489 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 490 491 /* 1 if X is an arithmetic operator. */ 492 493 #define ARITHMETIC_P(X) \ 494 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 495 == RTX_ARITHMETIC_RESULT) 496 497 /* 1 if X is an arithmetic operator. */ 498 499 #define COMMUTATIVE_ARITH_P(X) \ 500 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 501 502 /* 1 if X is a commutative arithmetic operator or a comparison operator. 503 These two are sometimes selected together because it is possible to 504 swap the two operands. */ 505 506 #define SWAPPABLE_OPERANDS_P(X) \ 507 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 508 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 509 | (1 << RTX_COMPARE))) 510 511 /* 1 if X is a non-commutative operator. */ 512 513 #define NON_COMMUTATIVE_P(X) \ 514 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 515 == RTX_NON_COMMUTATIVE_RESULT) 516 517 /* 1 if X is a commutative operator on integers. */ 518 519 #define COMMUTATIVE_P(X) \ 520 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 521 == RTX_COMMUTATIVE_RESULT) 522 523 /* 1 if X is a relational operator. */ 524 525 #define COMPARISON_P(X) \ 526 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 527 528 /* 1 if X is a constant value that is an integer. */ 529 530 #define CONSTANT_P(X) \ 531 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 532 533 /* 1 if X can be used to represent an object. */ 534 #define OBJECT_P(X) \ 535 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 536 537 /* General accessor macros for accessing the fields of an rtx. */ 538 539 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 540 /* The bit with a star outside the statement expr and an & inside is 541 so that N can be evaluated only once. */ 542 #define RTL_CHECK1(RTX, N, C1) __extension__ \ 543 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 544 const enum rtx_code _code = GET_CODE (_rtx); \ 545 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 546 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 547 __FUNCTION__); \ 548 if (GET_RTX_FORMAT(_code)[_n] != C1) \ 549 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 550 __FUNCTION__); \ 551 &_rtx->u.fld[_n]; })) 552 553 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 554 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 555 const enum rtx_code _code = GET_CODE (_rtx); \ 556 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 557 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 558 __FUNCTION__); \ 559 if (GET_RTX_FORMAT(_code)[_n] != C1 \ 560 && GET_RTX_FORMAT(_code)[_n] != C2) \ 561 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 562 __FUNCTION__); \ 563 &_rtx->u.fld[_n]; })) 564 565 #define RTL_CHECKC1(RTX, N, C) __extension__ \ 566 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 567 if (GET_CODE (_rtx) != (C)) \ 568 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 569 __FUNCTION__); \ 570 &_rtx->u.fld[_n]; })) 571 572 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 573 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 574 const enum rtx_code _code = GET_CODE (_rtx); \ 575 if (_code != (C1) && _code != (C2)) \ 576 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 577 __FUNCTION__); \ 578 &_rtx->u.fld[_n]; })) 579 580 #define RTVEC_ELT(RTVEC, I) __extension__ \ 581 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \ 582 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 583 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 584 __FUNCTION__); \ 585 &_rtvec->elem[_i]; })) 586 587 #define XWINT(RTX, N) __extension__ \ 588 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 589 const enum rtx_code _code = GET_CODE (_rtx); \ 590 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 591 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 592 __FUNCTION__); \ 593 if (GET_RTX_FORMAT(_code)[_n] != 'w') \ 594 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 595 __FUNCTION__); \ 596 &_rtx->u.hwint[_n]; })) 597 598 #define XCWINT(RTX, N, C) __extension__ \ 599 (*({ __typeof (RTX) const _rtx = (RTX); \ 600 if (GET_CODE (_rtx) != (C)) \ 601 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 602 __FUNCTION__); \ 603 &_rtx->u.hwint[N]; })) 604 605 #define XCMWINT(RTX, N, C, M) __extension__ \ 606 (*({ __typeof (RTX) const _rtx = (RTX); \ 607 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 608 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 609 __LINE__, __FUNCTION__); \ 610 &_rtx->u.hwint[N]; })) 611 612 #define XCNMPRV(RTX, C, M) __extension__ \ 613 ({ __typeof (RTX) const _rtx = (RTX); \ 614 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 615 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 616 __LINE__, __FUNCTION__); \ 617 &_rtx->u.rv; }) 618 619 #define XCNMPFV(RTX, C, M) __extension__ \ 620 ({ __typeof (RTX) const _rtx = (RTX); \ 621 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 622 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 623 __LINE__, __FUNCTION__); \ 624 &_rtx->u.fv; }) 625 626 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 627 ({ __typeof (RTX) const _symbol = (RTX); \ 628 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \ 629 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 630 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 631 __FUNCTION__); \ 632 &_symbol->u.block_sym; }) 633 634 extern void rtl_check_failed_bounds (const_rtx, int, const char *, int, 635 const char *) 636 ATTRIBUTE_NORETURN; 637 extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int, 638 const char *) 639 ATTRIBUTE_NORETURN; 640 extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *, 641 int, const char *) 642 ATTRIBUTE_NORETURN; 643 extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *, 644 int, const char *) 645 ATTRIBUTE_NORETURN; 646 extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code, 647 const char *, int, const char *) 648 ATTRIBUTE_NORETURN; 649 extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, enum machine_mode, 650 bool, const char *, int, const char *) 651 ATTRIBUTE_NORETURN; 652 extern void rtl_check_failed_block_symbol (const char *, int, const char *) 653 ATTRIBUTE_NORETURN; 654 extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int, 655 const char *) 656 ATTRIBUTE_NORETURN; 657 658 #else /* not ENABLE_RTL_CHECKING */ 659 660 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 661 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 662 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) 663 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 664 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) 665 #define XWINT(RTX, N) ((RTX)->u.hwint[N]) 666 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 667 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 668 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 669 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 670 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv) 671 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 672 673 #endif 674 675 /* General accessor macros for accessing the flags of an rtx. */ 676 677 /* Access an individual rtx flag, with no checking of any kind. */ 678 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 679 680 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 681 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 682 ({ __typeof (RTX) const _rtx = (RTX); \ 683 if (GET_CODE(_rtx) != C1) \ 684 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 685 __FUNCTION__); \ 686 _rtx; }) 687 688 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 689 ({ __typeof (RTX) const _rtx = (RTX); \ 690 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ 691 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 692 __FUNCTION__); \ 693 _rtx; }) 694 695 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 696 ({ __typeof (RTX) const _rtx = (RTX); \ 697 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 698 && GET_CODE(_rtx) != C3) \ 699 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 700 __FUNCTION__); \ 701 _rtx; }) 702 703 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 704 ({ __typeof (RTX) const _rtx = (RTX); \ 705 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 706 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ 707 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 708 __FUNCTION__); \ 709 _rtx; }) 710 711 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 712 ({ __typeof (RTX) const _rtx = (RTX); \ 713 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 714 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 715 && GET_CODE(_rtx) != C5) \ 716 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 717 __FUNCTION__); \ 718 _rtx; }) 719 720 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 721 __extension__ \ 722 ({ __typeof (RTX) const _rtx = (RTX); \ 723 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 724 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 725 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ 726 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 727 __FUNCTION__); \ 728 _rtx; }) 729 730 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 731 __extension__ \ 732 ({ __typeof (RTX) const _rtx = (RTX); \ 733 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 734 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 735 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 736 && GET_CODE(_rtx) != C7) \ 737 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 738 __FUNCTION__); \ 739 _rtx; }) 740 741 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ 742 __extension__ \ 743 ({ __typeof (RTX) const _rtx = (RTX); \ 744 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 745 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 746 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 747 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ 748 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 749 __FUNCTION__); \ 750 _rtx; }) 751 752 extern void rtl_check_failed_flag (const char *, const_rtx, const char *, 753 int, const char *) 754 ATTRIBUTE_NORETURN 755 ; 756 757 #else /* not ENABLE_RTL_FLAG_CHECKING */ 758 759 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 760 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 761 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 762 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 763 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 764 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 765 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 766 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) 767 #endif 768 769 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 770 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint) 771 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 772 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 773 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 774 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 775 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 776 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 777 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 778 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi) 779 780 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 781 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 782 783 /* These are like XINT, etc. except that they expect a '0' field instead 784 of the normal type code. */ 785 786 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 787 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 788 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 789 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 790 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 791 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 792 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 793 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 794 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 795 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 796 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 797 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 798 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 799 800 /* Access a '0' field with any type. */ 801 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 802 803 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 804 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 805 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 806 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 807 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 808 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 809 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 810 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 811 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi) 812 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 813 814 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 815 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 816 817 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 818 819 /* ACCESS MACROS for particular fields of insns. */ 821 822 /* Holds a unique number for each insn. 823 These are not necessarily sequentially increasing. */ 824 #define INSN_UID(INSN) XINT (INSN, 0) 825 826 /* Chain insns together in sequence. */ 827 #define PREV_INSN(INSN) XEXP (INSN, 1) 828 #define NEXT_INSN(INSN) XEXP (INSN, 2) 829 830 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) 831 832 /* The body of an insn. */ 833 #define PATTERN(INSN) XEXP (INSN, 4) 834 835 #define INSN_LOCATION(INSN) XUINT (INSN, 5) 836 837 #define INSN_HAS_LOCATION(INSN) ((LOCATION_LOCUS (INSN_LOCATION (INSN)))\ 838 != UNKNOWN_LOCATION) 839 840 /* LOCATION of an RTX if relevant. */ 841 #define RTL_LOCATION(X) (INSN_P (X) ? \ 842 INSN_LOCATION (X) : UNKNOWN_LOCATION) 843 844 /* Code number of instruction, from when it was recognized. 845 -1 means this instruction has not been recognized yet. */ 846 #define INSN_CODE(INSN) XINT (INSN, 6) 847 848 #define RTX_FRAME_RELATED_P(RTX) \ 849 (RTL_FLAG_CHECK6("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \ 850 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related) 851 852 /* 1 if RTX is an insn that has been deleted. */ 853 #define INSN_DELETED_P(RTX) \ 854 (RTL_FLAG_CHECK7("INSN_DELETED_P", (RTX), DEBUG_INSN, INSN, \ 855 CALL_INSN, JUMP_INSN, \ 856 CODE_LABEL, BARRIER, NOTE)->volatil) 857 858 /* 1 if RTX is a call to a const function. Built from ECF_CONST and 859 TREE_READONLY. */ 860 #define RTL_CONST_CALL_P(RTX) \ 861 (RTL_FLAG_CHECK1("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging) 862 863 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and 864 DECL_PURE_P. */ 865 #define RTL_PURE_CALL_P(RTX) \ 866 (RTL_FLAG_CHECK1("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val) 867 868 /* 1 if RTX is a call to a const or pure function. */ 869 #define RTL_CONST_OR_PURE_CALL_P(RTX) \ 870 (RTL_CONST_CALL_P(RTX) || RTL_PURE_CALL_P(RTX)) 871 872 /* 1 if RTX is a call to a looping const or pure function. Built from 873 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 874 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \ 875 (RTL_FLAG_CHECK1("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call) 876 877 /* 1 if RTX is a call_insn for a sibling call. */ 878 #define SIBLING_CALL_P(RTX) \ 879 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 880 881 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 882 #define INSN_ANNULLED_BRANCH_P(RTX) \ 883 (RTL_FLAG_CHECK1("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging) 884 885 /* 1 if RTX is an insn in a delay slot and is from the target of the branch. 886 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 887 executed if the branch is taken. For annulled branches with this bit 888 clear, the insn should be executed only if the branch is not taken. */ 889 #define INSN_FROM_TARGET_P(RTX) \ 890 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) 891 892 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 893 See the comments for ADDR_DIFF_VEC in rtl.def. */ 894 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) 895 896 /* In a VALUE, the value cselib has assigned to RTX. 897 This is a "struct cselib_val_struct", see cselib.h. */ 898 #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) 899 900 /* Holds a list of notes on what this insn does to various REGs. 901 It is a chain of EXPR_LIST rtx's, where the second operand is the 902 chain pointer and the first operand is the REG being described. 903 The mode field of the EXPR_LIST contains not a real machine mode 904 but a value from enum reg_note. */ 905 #define REG_NOTES(INSN) XEXP(INSN, 7) 906 907 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in 908 question. */ 909 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx) 910 911 enum reg_note 912 { 913 #define DEF_REG_NOTE(NAME) NAME, 914 #include "reg-notes.def" 915 #undef DEF_REG_NOTE 916 REG_NOTE_MAX 917 }; 918 919 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 920 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 921 #define PUT_REG_NOTE_KIND(LINK, KIND) \ 922 PUT_MODE (LINK, (enum machine_mode) (KIND)) 923 924 /* Names for REG_NOTE's in EXPR_LIST insn's. */ 925 926 extern const char * const reg_note_name[]; 927 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 928 929 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 930 USE and CLOBBER expressions. 931 USE expressions list the registers filled with arguments that 932 are passed to the function. 933 CLOBBER expressions document the registers explicitly clobbered 934 by this CALL_INSN. 935 Pseudo registers can not be mentioned in this list. */ 936 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8) 937 938 /* The label-number of a code-label. The assembler label 939 is made from `L' and the label-number printed in decimal. 940 Label numbers are unique in a compilation. */ 941 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) 942 943 /* In a NOTE that is a line number, this is a string for the file name that the 944 line is in. We use the same field to record block numbers temporarily in 945 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 946 between ints and pointers if we use a different macro for the block number.) 947 */ 948 949 /* Opaque data. */ 950 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) 951 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE) 952 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN); 953 #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) 954 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) 955 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) 956 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) 957 #define NOTE_CFI(INSN) XCCFI (INSN, 4, NOTE) 958 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 4, NOTE) 959 960 /* In a NOTE that is a line number, this is the line number. 961 Other kinds of NOTEs are identified by negative numbers here. */ 962 #define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE) 963 964 /* Nonzero if INSN is a note marking the beginning of a basic block. */ 965 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 966 (GET_CODE (INSN) == NOTE \ 967 && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK) 968 969 /* Variable declaration and the location of a variable. */ 970 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION)) 971 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION)) 972 973 /* Initialization status of the variable in the location. Status 974 can be unknown, uninitialized or initialized. See enumeration 975 type below. */ 976 #define PAT_VAR_LOCATION_STATUS(PAT) \ 977 ((enum var_init_status) (XCINT ((PAT), 2, VAR_LOCATION))) 978 979 /* Accessors for a NOTE_INSN_VAR_LOCATION. */ 980 #define NOTE_VAR_LOCATION_DECL(NOTE) \ 981 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE)) 982 #define NOTE_VAR_LOCATION_LOC(NOTE) \ 983 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE)) 984 #define NOTE_VAR_LOCATION_STATUS(NOTE) \ 985 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE)) 986 987 /* The VAR_LOCATION rtx in a DEBUG_INSN. */ 988 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN) 989 990 /* Accessors for a tree-expanded var location debug insn. */ 991 #define INSN_VAR_LOCATION_DECL(INSN) \ 992 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN)) 993 #define INSN_VAR_LOCATION_LOC(INSN) \ 994 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN)) 995 #define INSN_VAR_LOCATION_STATUS(INSN) \ 996 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN)) 997 998 /* Expand to the RTL that denotes an unknown variable location in a 999 DEBUG_INSN. */ 1000 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx)) 1001 1002 /* Determine whether X is such an unknown location. */ 1003 #define VAR_LOC_UNKNOWN_P(X) \ 1004 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx) 1005 1006 /* 1 if RTX is emitted after a call, but it should take effect before 1007 the call returns. */ 1008 #define NOTE_DURING_CALL_P(RTX) \ 1009 (RTL_FLAG_CHECK1("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call) 1010 1011 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */ 1012 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR) 1013 1014 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */ 1015 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR) 1016 1017 /* PARM_DECL DEBUG_PARAMETER_REF references. */ 1018 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF) 1019 1020 /* Codes that appear in the NOTE_KIND field for kinds of notes 1021 that are not line numbers. These codes are all negative. 1022 1023 Notice that we do not try to use zero here for any of 1024 the special note codes because sometimes the source line 1025 actually can be zero! This happens (for example) when we 1026 are generating code for the per-translation-unit constructor 1027 and destructor routines for some C++ translation unit. */ 1028 1029 enum insn_note 1030 { 1031 #define DEF_INSN_NOTE(NAME) NAME, 1032 #include "insn-notes.def" 1033 #undef DEF_INSN_NOTE 1034 1035 NOTE_INSN_MAX 1036 }; 1037 1038 /* Names for NOTE insn's other than line numbers. */ 1039 1040 extern const char * const note_insn_name[NOTE_INSN_MAX]; 1041 #define GET_NOTE_INSN_NAME(NOTE_CODE) \ 1042 (note_insn_name[(NOTE_CODE)]) 1043 1044 /* The name of a label, in case it corresponds to an explicit label 1045 in the input source code. */ 1046 #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) 1047 1048 /* In jump.c, each label contains a count of the number 1049 of LABEL_REFs that point at it, so unused labels can be deleted. */ 1050 #define LABEL_NUSES(RTX) XCINT (RTX, 5, CODE_LABEL) 1051 1052 /* Labels carry a two-bit field composed of the ->jump and ->call 1053 bits. This field indicates whether the label is an alternate 1054 entry point, and if so, what kind. */ 1055 enum label_kind 1056 { 1057 LABEL_NORMAL = 0, /* ordinary label */ 1058 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 1059 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 1060 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 1061 }; 1062 1063 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 1064 1065 /* Retrieve the kind of LABEL. */ 1066 #define LABEL_KIND(LABEL) __extension__ \ 1067 ({ __typeof (LABEL) const _label = (LABEL); \ 1068 if (GET_CODE (_label) != CODE_LABEL) \ 1069 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 1070 __FUNCTION__); \ 1071 (enum label_kind) ((_label->jump << 1) | _label->call); }) 1072 1073 /* Set the kind of LABEL. */ 1074 #define SET_LABEL_KIND(LABEL, KIND) do { \ 1075 __typeof (LABEL) const _label = (LABEL); \ 1076 const unsigned int _kind = (KIND); \ 1077 if (GET_CODE (_label) != CODE_LABEL) \ 1078 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 1079 __FUNCTION__); \ 1080 _label->jump = ((_kind >> 1) & 1); \ 1081 _label->call = (_kind & 1); \ 1082 } while (0) 1083 1084 #else 1085 1086 /* Retrieve the kind of LABEL. */ 1087 #define LABEL_KIND(LABEL) \ 1088 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 1089 1090 /* Set the kind of LABEL. */ 1091 #define SET_LABEL_KIND(LABEL, KIND) do { \ 1092 rtx const _label = (LABEL); \ 1093 const unsigned int _kind = (KIND); \ 1094 _label->jump = ((_kind >> 1) & 1); \ 1095 _label->call = (_kind & 1); \ 1096 } while (0) 1097 1098 #endif /* rtl flag checking */ 1099 1100 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 1101 1102 /* In jump.c, each JUMP_INSN can point to a label that it can jump to, 1103 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 1104 be decremented and possibly the label can be deleted. */ 1105 #define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN) 1106 1107 /* Once basic blocks are found, each CODE_LABEL starts a chain that 1108 goes through all the LABEL_REFs that jump to that label. The chain 1109 eventually winds up at the CODE_LABEL: it is circular. */ 1110 #define LABEL_REFS(LABEL) XCEXP (LABEL, 4, CODE_LABEL) 1111 1112 /* For a REG rtx, REGNO extracts the register number. REGNO can only 1114 be used on RHS. Use SET_REGNO to change the value. */ 1115 #define REGNO(RTX) (rhs_regno(RTX)) 1116 #define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N) 1117 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N) 1118 1119 /* ORIGINAL_REGNO holds the number the register originally had; for a 1120 pseudo register turned into a hard reg this will hold the old pseudo 1121 register number. */ 1122 #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) 1123 1124 /* Force the REGNO macro to only be used on the lhs. */ 1125 static inline unsigned int 1126 rhs_regno (const_rtx x) 1127 { 1128 return XCUINT (x, 0, REG); 1129 } 1130 1131 1132 /* 1 if RTX is a reg or parallel that is the current function's return 1133 value. */ 1134 #define REG_FUNCTION_VALUE_P(RTX) \ 1135 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 1136 1137 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 1138 #define REG_USERVAR_P(RTX) \ 1139 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) 1140 1141 /* 1 if RTX is a reg that holds a pointer value. */ 1142 #define REG_POINTER(RTX) \ 1143 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) 1144 1145 /* 1 if RTX is a mem that holds a pointer value. */ 1146 #define MEM_POINTER(RTX) \ 1147 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) 1148 1149 /* 1 if the given register REG corresponds to a hard register. */ 1150 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1151 1152 /* 1 if the given register number REG_NO corresponds to a hard register. */ 1153 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1154 1155 /* For a CONST_INT rtx, INTVAL extracts the integer. */ 1156 #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) 1157 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1158 1159 /* For a CONST_DOUBLE: 1160 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1161 low-order word and ..._HIGH the high-order. 1162 For a float, there is a REAL_VALUE_TYPE structure, and 1163 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1164 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1165 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1166 #define CONST_DOUBLE_REAL_VALUE(r) \ 1167 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1168 1169 #define CONST_FIXED_VALUE(r) \ 1170 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode)) 1171 #define CONST_FIXED_VALUE_HIGH(r) \ 1172 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high)) 1173 #define CONST_FIXED_VALUE_LOW(r) \ 1174 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low)) 1175 1176 /* For a CONST_VECTOR, return element #n. */ 1177 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1178 1179 /* For a CONST_VECTOR, return the number of elements in a vector. */ 1180 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1181 1182 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1183 SUBREG_BYTE extracts the byte-number. */ 1184 1185 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1186 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1187 1188 /* in rtlanal.c */ 1189 /* Return the right cost to give to an operation 1190 to make the cost of the corresponding register-to-register instruction 1191 N times that of a fast register-to-register instruction. */ 1192 #define COSTS_N_INSNS(N) ((N) * 4) 1193 1194 /* Maximum cost of an rtl expression. This value has the special meaning 1195 not to use an rtx with this cost under any circumstances. */ 1196 #define MAX_COST INT_MAX 1197 1198 /* A structure to hold all available cost information about an rtl 1199 expression. */ 1200 struct full_rtx_costs 1201 { 1202 int speed; 1203 int size; 1204 }; 1205 1206 /* Initialize a full_rtx_costs structure C to the maximum cost. */ 1207 static inline void 1208 init_costs_to_max (struct full_rtx_costs *c) 1209 { 1210 c->speed = MAX_COST; 1211 c->size = MAX_COST; 1212 } 1213 1214 /* Initialize a full_rtx_costs structure C to zero cost. */ 1215 static inline void 1216 init_costs_to_zero (struct full_rtx_costs *c) 1217 { 1218 c->speed = 0; 1219 c->size = 0; 1220 } 1221 1222 /* Compare two full_rtx_costs structures A and B, returning true 1223 if A < B when optimizing for speed. */ 1224 static inline bool 1225 costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b, 1226 bool speed) 1227 { 1228 if (speed) 1229 return (a->speed < b->speed 1230 || (a->speed == b->speed && a->size < b->size)); 1231 else 1232 return (a->size < b->size 1233 || (a->size == b->size && a->speed < b->speed)); 1234 } 1235 1236 /* Increase both members of the full_rtx_costs structure C by the 1237 cost of N insns. */ 1238 static inline void 1239 costs_add_n_insns (struct full_rtx_costs *c, int n) 1240 { 1241 c->speed += COSTS_N_INSNS (n); 1242 c->size += COSTS_N_INSNS (n); 1243 } 1244 1245 /* Information about an address. This structure is supposed to be able 1246 to represent all supported target addresses. Please extend it if it 1247 is not yet general enough. */ 1248 struct address_info { 1249 /* The mode of the value being addressed, or VOIDmode if this is 1250 a load-address operation with no known address mode. */ 1251 enum machine_mode mode; 1252 1253 /* The address space. */ 1254 addr_space_t as; 1255 1256 /* A pointer to the top-level address. */ 1257 rtx *outer; 1258 1259 /* A pointer to the inner address, after all address mutations 1260 have been stripped from the top-level address. It can be one 1261 of the following: 1262 1263 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null. 1264 1265 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP 1266 points to the step value, depending on whether the step is variable 1267 or constant respectively. SEGMENT is null. 1268 1269 - A plain sum of the form SEGMENT + BASE + INDEX + DISP, 1270 with null fields evaluating to 0. */ 1271 rtx *inner; 1272 1273 /* Components that make up *INNER. Each one may be null or nonnull. 1274 When nonnull, their meanings are as follows: 1275 1276 - *SEGMENT is the "segment" of memory to which the address refers. 1277 This value is entirely target-specific and is only called a "segment" 1278 because that's its most typical use. It contains exactly one UNSPEC, 1279 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need 1280 reloading. 1281 1282 - *BASE is a variable expression representing a base address. 1283 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM. 1284 1285 - *INDEX is a variable expression representing an index value. 1286 It may be a scaled expression, such as a MULT. It has exactly 1287 one REG, SUBREG or MEM, pointed to by INDEX_TERM. 1288 1289 - *DISP is a constant, possibly mutated. DISP_TERM points to the 1290 unmutated RTX_CONST_OBJ. */ 1291 rtx *segment; 1292 rtx *base; 1293 rtx *index; 1294 rtx *disp; 1295 1296 rtx *segment_term; 1297 rtx *base_term; 1298 rtx *index_term; 1299 rtx *disp_term; 1300 1301 /* In a {PRE,POST}_MODIFY address, this points to a second copy 1302 of BASE_TERM, otherwise it is null. */ 1303 rtx *base_term2; 1304 1305 /* ADDRESS if this structure describes an address operand, MEM if 1306 it describes a MEM address. */ 1307 enum rtx_code addr_outer_code; 1308 1309 /* If BASE is nonnull, this is the code of the rtx that contains it. */ 1310 enum rtx_code base_outer_code; 1311 1312 /* True if this is an RTX_AUTOINC address. */ 1313 bool autoinc_p; 1314 }; 1315 1316 extern void init_rtlanal (void); 1317 extern int rtx_cost (rtx, enum rtx_code, int, bool); 1318 extern int address_cost (rtx, enum machine_mode, addr_space_t, bool); 1319 extern void get_full_rtx_cost (rtx, enum rtx_code, int, 1320 struct full_rtx_costs *); 1321 extern unsigned int subreg_lsb (const_rtx); 1322 extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, 1323 unsigned int); 1324 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, 1325 unsigned int, enum machine_mode); 1326 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, 1327 unsigned int, enum machine_mode); 1328 extern unsigned int subreg_regno (const_rtx); 1329 extern int simplify_subreg_regno (unsigned int, enum machine_mode, 1330 unsigned int, enum machine_mode); 1331 extern unsigned int subreg_nregs (const_rtx); 1332 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx); 1333 extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, enum machine_mode); 1334 extern unsigned int num_sign_bit_copies (const_rtx, enum machine_mode); 1335 extern bool constant_pool_constant_p (rtx); 1336 extern bool truncated_to_mode (enum machine_mode, const_rtx); 1337 extern int low_bitmask_len (enum machine_mode, unsigned HOST_WIDE_INT); 1338 extern void split_double (rtx, rtx *, rtx *); 1339 extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0); 1340 extern void decompose_address (struct address_info *, rtx *, 1341 enum machine_mode, addr_space_t, enum rtx_code); 1342 extern void decompose_lea_address (struct address_info *, rtx *); 1343 extern void decompose_mem_address (struct address_info *, rtx); 1344 extern void update_address (struct address_info *); 1345 extern HOST_WIDE_INT get_index_scale (const struct address_info *); 1346 extern enum rtx_code get_index_code (const struct address_info *); 1347 1348 #ifndef GENERATOR_FILE 1349 /* Return the cost of SET X. SPEED_P is true if optimizing for speed 1350 rather than size. */ 1351 1352 static inline int 1353 set_rtx_cost (rtx x, bool speed_p) 1354 { 1355 return rtx_cost (x, INSN, 4, speed_p); 1356 } 1357 1358 /* Like set_rtx_cost, but return both the speed and size costs in C. */ 1359 1360 static inline void 1361 get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c) 1362 { 1363 get_full_rtx_cost (x, INSN, 4, c); 1364 } 1365 1366 /* Return the cost of moving X into a register, relative to the cost 1367 of a register move. SPEED_P is true if optimizing for speed rather 1368 than size. */ 1369 1370 static inline int 1371 set_src_cost (rtx x, bool speed_p) 1372 { 1373 return rtx_cost (x, SET, 1, speed_p); 1374 } 1375 1376 /* Like set_src_cost, but return both the speed and size costs in C. */ 1377 1378 static inline void 1379 get_full_set_src_cost (rtx x, struct full_rtx_costs *c) 1380 { 1381 get_full_rtx_cost (x, SET, 1, c); 1382 } 1383 #endif 1384 1385 /* 1 if RTX is a subreg containing a reg that is already known to be 1386 sign- or zero-extended from the mode of the subreg to the mode of 1387 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 1388 extension. 1389 1390 When used as a LHS, is means that this extension must be done 1391 when assigning to SUBREG_REG. */ 1392 1393 #define SUBREG_PROMOTED_VAR_P(RTX) \ 1394 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 1395 1396 #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ 1397 do { \ 1398 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ 1399 if ((VAL) < 0) \ 1400 _rtx->volatil = 1; \ 1401 else { \ 1402 _rtx->volatil = 0; \ 1403 _rtx->unchanging = (VAL); \ 1404 } \ 1405 } while (0) 1406 1407 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case 1408 this gives the necessary extensions: 1409 0 - signed 1410 1 - normal unsigned 1411 -1 - pointer unsigned, which most often can be handled like unsigned 1412 extension, except for generating instructions where we need to 1413 emit special code (ptr_extend insns) on some architectures. */ 1414 1415 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 1416 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ 1417 ? -1 : (int) (RTX)->unchanging) 1418 1419 /* Access various components of an ASM_OPERANDS rtx. */ 1420 1421 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 1422 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 1423 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 1424 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 1425 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 1426 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 1427 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 1428 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 1429 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 1430 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 1431 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 1432 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 1433 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 1434 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS) 1435 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS) 1436 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS) 1437 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS) 1438 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT) 1439 1440 /* 1 if RTX is a mem that is statically allocated in read-only memory. */ 1441 #define MEM_READONLY_P(RTX) \ 1442 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging) 1443 1444 /* 1 if RTX is a mem and we should keep the alias set for this mem 1445 unchanged when we access a component. Set to 1, or example, when we 1446 are already in a non-addressable component of an aggregate. */ 1447 #define MEM_KEEP_ALIAS_SET_P(RTX) \ 1448 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 1449 1450 /* 1 if RTX is a mem or asm_operand for a volatile reference. */ 1451 #define MEM_VOLATILE_P(RTX) \ 1452 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 1453 ASM_INPUT)->volatil) 1454 1455 /* 1 if RTX is a mem that cannot trap. */ 1456 #define MEM_NOTRAP_P(RTX) \ 1457 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) 1458 1459 /* The memory attribute block. We provide access macros for each value 1460 in the block and provide defaults if none specified. */ 1461 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 1462 1463 /* The register attribute block. We provide access macros for each value 1464 in the block and provide defaults if none specified. */ 1465 #define REG_ATTRS(RTX) X0REGATTR (RTX, 2) 1466 1467 #ifndef GENERATOR_FILE 1468 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 1469 set, and may alias anything. Otherwise, the MEM can only alias 1470 MEMs in a conflicting alias set. This value is set in a 1471 language-dependent manner in the front-end, and should not be 1472 altered in the back-end. These set numbers are tested with 1473 alias_sets_conflict_p. */ 1474 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias) 1475 1476 /* For a MEM rtx, the decl it is known to refer to, if it is known to 1477 refer to part of a DECL. It may also be a COMPONENT_REF. */ 1478 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr) 1479 1480 /* For a MEM rtx, true if its MEM_OFFSET is known. */ 1481 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p) 1482 1483 /* For a MEM rtx, the offset from the start of MEM_EXPR. */ 1484 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset) 1485 1486 /* For a MEM rtx, the address space. */ 1487 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace) 1488 1489 /* For a MEM rtx, true if its MEM_SIZE is known. */ 1490 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p) 1491 1492 /* For a MEM rtx, the size in bytes of the MEM. */ 1493 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size) 1494 1495 /* For a MEM rtx, the alignment in bits. We can use the alignment of the 1496 mode as a default when STRICT_ALIGNMENT, but not if not. */ 1497 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align) 1498 #else 1499 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC 1500 #endif 1501 1502 /* For a REG rtx, the decl it is known to refer to, if it is known to 1503 refer to part of a DECL. */ 1504 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 1505 1506 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 1507 HOST_WIDE_INT. */ 1508 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 1509 1510 /* Copy the attributes that apply to memory locations from RHS to LHS. */ 1511 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 1512 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 1513 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 1514 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 1515 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 1516 MEM_POINTER (LHS) = MEM_POINTER (RHS), \ 1517 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 1518 1519 /* 1 if RTX is a label_ref for a nonlocal label. */ 1520 /* Likewise in an expr_list for a REG_LABEL_OPERAND or 1521 REG_LABEL_TARGET note. */ 1522 #define LABEL_REF_NONLOCAL_P(RTX) \ 1523 (RTL_FLAG_CHECK1("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil) 1524 1525 /* 1 if RTX is a code_label that should always be considered to be needed. */ 1526 #define LABEL_PRESERVE_P(RTX) \ 1527 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 1528 1529 /* During sched, 1 if RTX is an insn that must be scheduled together 1530 with the preceding insn. */ 1531 #define SCHED_GROUP_P(RTX) \ 1532 (RTL_FLAG_CHECK4("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \ 1533 JUMP_INSN, CALL_INSN \ 1534 )->in_struct) 1535 1536 /* For a SET rtx, SET_DEST is the place that is set 1537 and SET_SRC is the value it is set to. */ 1538 #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) 1539 #define SET_SRC(RTX) XCEXP(RTX, 1, SET) 1540 #define SET_IS_RETURN_P(RTX) \ 1541 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) 1542 1543 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 1544 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 1545 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 1546 1547 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 1548 conditionally executing the code on, COND_EXEC_CODE is the code 1549 to execute if the condition is true. */ 1550 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 1551 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 1552 1553 /* 1 if RTX is a symbol_ref that addresses this function's rtl 1554 constants pool. */ 1555 #define CONSTANT_POOL_ADDRESS_P(RTX) \ 1556 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 1557 1558 /* 1 if RTX is a symbol_ref that addresses a value in the file's 1559 tree constant pool. This information is private to varasm.c. */ 1560 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 1561 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ 1562 (RTX), SYMBOL_REF)->frame_related) 1563 1564 /* Used if RTX is a symbol_ref, for machine-specific purposes. */ 1565 #define SYMBOL_REF_FLAG(RTX) \ 1566 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 1567 1568 /* 1 if RTX is a symbol_ref that has been the library function in 1569 emit_library_call. */ 1570 #define SYMBOL_REF_USED(RTX) \ 1571 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 1572 1573 /* 1 if RTX is a symbol_ref for a weak symbol. */ 1574 #define SYMBOL_REF_WEAK(RTX) \ 1575 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 1576 1577 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 1578 SYMBOL_REF_CONSTANT. */ 1579 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2) 1580 1581 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 1582 pool symbol. */ 1583 #define SET_SYMBOL_REF_DECL(RTX, DECL) \ 1584 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL)) 1585 1586 /* The tree (decl or constant) associated with the symbol, or null. */ 1587 #define SYMBOL_REF_DECL(RTX) \ 1588 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2)) 1589 1590 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 1591 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 1592 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C)) 1593 1594 /* The rtx constant pool entry for a symbol, or null. */ 1595 #define SYMBOL_REF_CONSTANT(RTX) \ 1596 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL) 1597 1598 /* A set of flags on a symbol_ref that are, in some respects, redundant with 1599 information derivable from the tree decl associated with this symbol. 1600 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 1601 decl. In some cases this is a bug. But beyond that, it's nice to cache 1602 this information to avoid recomputing it. Finally, this allows space for 1603 the target to store more than one bit of information, as with 1604 SYMBOL_REF_FLAG. */ 1605 #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) 1606 1607 /* These flags are common enough to be defined for all targets. They 1608 are computed by the default version of targetm.encode_section_info. */ 1609 1610 /* Set if this symbol is a function. */ 1611 #define SYMBOL_FLAG_FUNCTION (1 << 0) 1612 #define SYMBOL_REF_FUNCTION_P(RTX) \ 1613 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 1614 /* Set if targetm.binds_local_p is true. */ 1615 #define SYMBOL_FLAG_LOCAL (1 << 1) 1616 #define SYMBOL_REF_LOCAL_P(RTX) \ 1617 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 1618 /* Set if targetm.in_small_data_p is true. */ 1619 #define SYMBOL_FLAG_SMALL (1 << 2) 1620 #define SYMBOL_REF_SMALL_P(RTX) \ 1621 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 1622 /* The three-bit field at [5:3] is true for TLS variables; use 1623 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 1624 #define SYMBOL_FLAG_TLS_SHIFT 3 1625 #define SYMBOL_REF_TLS_MODEL(RTX) \ 1626 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 1627 /* Set if this symbol is not defined in this translation unit. */ 1628 #define SYMBOL_FLAG_EXTERNAL (1 << 6) 1629 #define SYMBOL_REF_EXTERNAL_P(RTX) \ 1630 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 1631 /* Set if this symbol has a block_symbol structure associated with it. */ 1632 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 1633 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 1634 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 1635 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 1636 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 1637 #define SYMBOL_FLAG_ANCHOR (1 << 8) 1638 #define SYMBOL_REF_ANCHOR_P(RTX) \ 1639 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 1640 1641 /* Subsequent bits are available for the target to use. */ 1642 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9 1643 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 1644 1645 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 1646 structure to which the symbol belongs, or NULL if it has not been 1647 assigned a block. */ 1648 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 1649 1650 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 1651 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 1652 RTX has not yet been assigned to a block, or it has not been given an 1653 offset within that block. */ 1654 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 1655 1656 /* True if RTX is flagged to be a scheduling barrier. */ 1657 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \ 1658 (RTL_FLAG_CHECK1("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil) 1659 1660 /* Indicate whether the machine has any sort of auto increment addressing. 1661 If not, we can avoid checking for REG_INC notes. */ 1662 1663 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \ 1664 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \ 1665 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \ 1666 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG)) 1667 #define AUTO_INC_DEC 1668 #endif 1669 1670 /* Define a macro to look for REG_INC notes, 1671 but save time on machines where they never exist. */ 1672 1673 #ifdef AUTO_INC_DEC 1674 #define FIND_REG_INC_NOTE(INSN, REG) \ 1675 ((REG) != NULL_RTX && REG_P ((REG)) \ 1676 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 1677 : find_reg_note ((INSN), REG_INC, (REG))) 1678 #else 1679 #define FIND_REG_INC_NOTE(INSN, REG) 0 1680 #endif 1681 1682 #ifndef HAVE_PRE_INCREMENT 1683 #define HAVE_PRE_INCREMENT 0 1684 #endif 1685 1686 #ifndef HAVE_PRE_DECREMENT 1687 #define HAVE_PRE_DECREMENT 0 1688 #endif 1689 1690 #ifndef HAVE_POST_INCREMENT 1691 #define HAVE_POST_INCREMENT 0 1692 #endif 1693 1694 #ifndef HAVE_POST_DECREMENT 1695 #define HAVE_POST_DECREMENT 0 1696 #endif 1697 1698 #ifndef HAVE_POST_MODIFY_DISP 1699 #define HAVE_POST_MODIFY_DISP 0 1700 #endif 1701 1702 #ifndef HAVE_POST_MODIFY_REG 1703 #define HAVE_POST_MODIFY_REG 0 1704 #endif 1705 1706 #ifndef HAVE_PRE_MODIFY_DISP 1707 #define HAVE_PRE_MODIFY_DISP 0 1708 #endif 1709 1710 #ifndef HAVE_PRE_MODIFY_REG 1711 #define HAVE_PRE_MODIFY_REG 0 1712 #endif 1713 1714 1715 /* Some architectures do not have complete pre/post increment/decrement 1716 instruction sets, or only move some modes efficiently. These macros 1717 allow us to tune autoincrement generation. */ 1718 1719 #ifndef USE_LOAD_POST_INCREMENT 1720 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1721 #endif 1722 1723 #ifndef USE_LOAD_POST_DECREMENT 1724 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1725 #endif 1726 1727 #ifndef USE_LOAD_PRE_INCREMENT 1728 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1729 #endif 1730 1731 #ifndef USE_LOAD_PRE_DECREMENT 1732 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1733 #endif 1734 1735 #ifndef USE_STORE_POST_INCREMENT 1736 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1737 #endif 1738 1739 #ifndef USE_STORE_POST_DECREMENT 1740 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1741 #endif 1742 1743 #ifndef USE_STORE_PRE_INCREMENT 1744 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1745 #endif 1746 1747 #ifndef USE_STORE_PRE_DECREMENT 1748 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1749 #endif 1750 1751 /* Nonzero when we are generating CONCATs. */ 1753 extern int generating_concat_p; 1754 1755 /* Nonzero when we are expanding trees to RTL. */ 1756 extern int currently_expanding_to_rtl; 1757 1758 /* Generally useful functions. */ 1759 1760 /* In explow.c */ 1761 extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); 1762 extern rtx plus_constant (enum machine_mode, rtx, HOST_WIDE_INT); 1763 1764 /* In rtl.c */ 1765 extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 1766 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 1767 1768 extern rtvec rtvec_alloc (int); 1769 extern rtvec shallow_copy_rtvec (rtvec); 1770 extern bool shared_const_p (const_rtx); 1771 extern rtx copy_rtx (rtx); 1772 extern void dump_rtx_statistics (void); 1773 1774 /* In emit-rtl.c */ 1775 extern rtx copy_rtx_if_shared (rtx); 1776 1777 /* In rtl.c */ 1778 extern unsigned int rtx_size (const_rtx); 1779 extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL); 1780 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 1781 extern int rtx_equal_p (const_rtx, const_rtx); 1782 extern hashval_t iterative_hash_rtx (const_rtx, hashval_t); 1783 1784 /* In emit-rtl.c */ 1785 extern rtvec gen_rtvec_v (int, rtx *); 1786 extern rtx gen_reg_rtx (enum machine_mode); 1787 extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); 1788 extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int); 1789 extern rtx gen_reg_rtx_and_attrs (rtx); 1790 extern rtx gen_label_rtx (void); 1791 extern rtx gen_lowpart_common (enum machine_mode, rtx); 1792 1793 /* In cse.c */ 1794 extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); 1795 1796 /* In emit-rtl.c */ 1797 extern rtx gen_highpart (enum machine_mode, rtx); 1798 extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); 1799 extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); 1800 1801 /* In emit-rtl.c */ 1802 extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); 1803 extern bool paradoxical_subreg_p (const_rtx); 1804 extern int subreg_lowpart_p (const_rtx); 1805 extern unsigned int subreg_lowpart_offset (enum machine_mode, 1806 enum machine_mode); 1807 extern unsigned int subreg_highpart_offset (enum machine_mode, 1808 enum machine_mode); 1809 extern int byte_lowpart_offset (enum machine_mode, enum machine_mode); 1810 extern rtx make_safe_from (rtx, rtx); 1811 extern rtx convert_memory_address_addr_space (enum machine_mode, rtx, 1812 addr_space_t); 1813 #define convert_memory_address(to_mode,x) \ 1814 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC) 1815 extern const char *get_insn_name (int); 1816 extern rtx get_last_insn_anywhere (void); 1817 extern rtx get_first_nonnote_insn (void); 1818 extern rtx get_last_nonnote_insn (void); 1819 extern void start_sequence (void); 1820 extern void push_to_sequence (rtx); 1821 extern void push_to_sequence2 (rtx, rtx); 1822 extern void end_sequence (void); 1823 extern double_int rtx_to_double_int (const_rtx); 1824 extern rtx immed_double_int_const (double_int, enum machine_mode); 1825 extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 1826 enum machine_mode); 1827 1828 /* In loop-iv.c */ 1829 1830 extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode); 1831 1832 /* In varasm.c */ 1833 extern rtx force_const_mem (enum machine_mode, rtx); 1834 1835 /* In varasm.c */ 1836 1837 struct function; 1838 extern rtx get_pool_constant (rtx); 1839 extern rtx get_pool_constant_mark (rtx, bool *); 1840 extern enum machine_mode get_pool_mode (const_rtx); 1841 extern rtx simplify_subtraction (rtx); 1842 extern void decide_function_section (tree); 1843 1844 /* In function.c */ 1845 extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); 1846 #define ASLK_REDUCE_ALIGN 1 1847 #define ASLK_RECORD_PAD 2 1848 extern rtx assign_stack_local_1 (enum machine_mode, HOST_WIDE_INT, int, int); 1849 extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT); 1850 extern rtx assign_stack_temp_for_type (enum machine_mode, HOST_WIDE_INT, tree); 1851 extern rtx assign_temp (tree, int, int); 1852 1853 /* In emit-rtl.c */ 1854 extern rtx emit_insn_before (rtx, rtx); 1855 extern rtx emit_insn_before_noloc (rtx, rtx, basic_block); 1856 extern rtx emit_insn_before_setloc (rtx, rtx, int); 1857 extern rtx emit_jump_insn_before (rtx, rtx); 1858 extern rtx emit_jump_insn_before_noloc (rtx, rtx); 1859 extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); 1860 extern rtx emit_call_insn_before (rtx, rtx); 1861 extern rtx emit_call_insn_before_noloc (rtx, rtx); 1862 extern rtx emit_call_insn_before_setloc (rtx, rtx, int); 1863 extern rtx emit_debug_insn_before (rtx, rtx); 1864 extern rtx emit_debug_insn_before_noloc (rtx, rtx); 1865 extern rtx emit_debug_insn_before_setloc (rtx, rtx, int); 1866 extern rtx emit_barrier_before (rtx); 1867 extern rtx emit_label_before (rtx, rtx); 1868 extern rtx emit_note_before (enum insn_note, rtx); 1869 extern rtx emit_insn_after (rtx, rtx); 1870 extern rtx emit_insn_after_noloc (rtx, rtx, basic_block); 1871 extern rtx emit_insn_after_setloc (rtx, rtx, int); 1872 extern rtx emit_jump_insn_after (rtx, rtx); 1873 extern rtx emit_jump_insn_after_noloc (rtx, rtx); 1874 extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); 1875 extern rtx emit_call_insn_after (rtx, rtx); 1876 extern rtx emit_call_insn_after_noloc (rtx, rtx); 1877 extern rtx emit_call_insn_after_setloc (rtx, rtx, int); 1878 extern rtx emit_debug_insn_after (rtx, rtx); 1879 extern rtx emit_debug_insn_after_noloc (rtx, rtx); 1880 extern rtx emit_debug_insn_after_setloc (rtx, rtx, int); 1881 extern rtx emit_barrier_after (rtx); 1882 extern rtx emit_label_after (rtx, rtx); 1883 extern rtx emit_note_after (enum insn_note, rtx); 1884 extern rtx emit_insn (rtx); 1885 extern rtx emit_debug_insn (rtx); 1886 extern rtx emit_jump_insn (rtx); 1887 extern rtx emit_call_insn (rtx); 1888 extern rtx emit_label (rtx); 1889 extern rtx emit_barrier (void); 1890 extern rtx emit_note (enum insn_note); 1891 extern rtx emit_note_copy (rtx); 1892 extern rtx gen_clobber (rtx); 1893 extern rtx emit_clobber (rtx); 1894 extern rtx gen_use (rtx); 1895 extern rtx emit_use (rtx); 1896 extern rtx make_insn_raw (rtx); 1897 extern void add_function_usage_to (rtx, rtx); 1898 extern rtx last_call_insn (void); 1899 extern rtx previous_insn (rtx); 1900 extern rtx next_insn (rtx); 1901 extern rtx prev_nonnote_insn (rtx); 1902 extern rtx prev_nonnote_insn_bb (rtx); 1903 extern rtx next_nonnote_insn (rtx); 1904 extern rtx next_nonnote_insn_bb (rtx); 1905 extern rtx prev_nondebug_insn (rtx); 1906 extern rtx next_nondebug_insn (rtx); 1907 extern rtx prev_nonnote_nondebug_insn (rtx); 1908 extern rtx next_nonnote_nondebug_insn (rtx); 1909 extern rtx prev_real_insn (rtx); 1910 extern rtx next_real_insn (rtx); 1911 extern rtx prev_active_insn (rtx); 1912 extern rtx next_active_insn (rtx); 1913 extern int active_insn_p (const_rtx); 1914 extern rtx next_label (rtx); 1915 extern rtx skip_consecutive_labels (rtx); 1916 extern rtx next_cc0_user (rtx); 1917 extern rtx prev_cc0_setter (rtx); 1918 1919 /* In emit-rtl.c */ 1920 extern int insn_line (const_rtx); 1921 extern const char * insn_file (const_rtx); 1922 extern tree insn_scope (const_rtx); 1923 extern location_t prologue_location, epilogue_location; 1924 1925 /* In jump.c */ 1926 extern enum rtx_code reverse_condition (enum rtx_code); 1927 extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 1928 extern enum rtx_code swap_condition (enum rtx_code); 1929 extern enum rtx_code unsigned_condition (enum rtx_code); 1930 extern enum rtx_code signed_condition (enum rtx_code); 1931 extern void mark_jump_label (rtx, rtx, int); 1932 extern unsigned int cleanup_barriers (void); 1933 1934 /* In jump.c */ 1935 extern rtx delete_related_insns (rtx); 1936 1937 /* In recog.c */ 1938 extern rtx *find_constant_term_loc (rtx *); 1939 1940 /* In emit-rtl.c */ 1941 extern rtx try_split (rtx, rtx, int); 1942 extern int split_branch_probability; 1943 1944 /* In unknown file */ 1945 extern rtx split_insns (rtx, rtx); 1946 1947 /* In simplify-rtx.c */ 1948 extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode, 1949 rtx, enum machine_mode); 1950 extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, 1951 enum machine_mode); 1952 extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode, 1953 rtx, rtx); 1954 extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, 1955 rtx); 1956 extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, 1957 enum machine_mode, rtx, rtx, rtx); 1958 extern rtx simplify_const_relational_operation (enum rtx_code, 1959 enum machine_mode, rtx, rtx); 1960 extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, 1961 enum machine_mode, rtx, rtx); 1962 extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); 1963 extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, 1964 enum machine_mode); 1965 extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, 1966 enum machine_mode, rtx, rtx, rtx); 1967 extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, 1968 enum machine_mode, rtx, rtx); 1969 extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, 1970 unsigned int); 1971 extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, 1972 unsigned int); 1973 extern rtx simplify_replace_fn_rtx (rtx, const_rtx, 1974 rtx (*fn) (rtx, const_rtx, void *), void *); 1975 extern rtx simplify_replace_rtx (rtx, const_rtx, rtx); 1976 extern rtx simplify_rtx (const_rtx); 1977 extern rtx avoid_constant_pool_reference (rtx); 1978 extern rtx delegitimize_mem_from_attrs (rtx); 1979 extern bool mode_signbit_p (enum machine_mode, const_rtx); 1980 extern bool val_signbit_p (enum machine_mode, unsigned HOST_WIDE_INT); 1981 extern bool val_signbit_known_set_p (enum machine_mode, 1982 unsigned HOST_WIDE_INT); 1983 extern bool val_signbit_known_clear_p (enum machine_mode, 1984 unsigned HOST_WIDE_INT); 1985 1986 /* In reginfo.c */ 1987 extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 1988 bool); 1989 1990 /* In emit-rtl.c */ 1991 extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 1992 extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx); 1993 extern void set_insn_deleted (rtx); 1994 1995 /* Functions in rtlanal.c */ 1996 1997 /* Single set is implemented as macro for performance reasons. */ 1998 #define single_set(I) (INSN_P (I) \ 1999 ? (GET_CODE (PATTERN (I)) == SET \ 2000 ? PATTERN (I) : single_set_1 (I)) \ 2001 : NULL_RTX) 2002 #define single_set_1(I) single_set_2 (I, PATTERN (I)) 2003 2004 /* Structure used for passing data to REPLACE_LABEL. */ 2005 typedef struct replace_label_data 2006 { 2007 rtx r1; 2008 rtx r2; 2009 bool update_label_nuses; 2010 } replace_label_data; 2011 2012 extern enum machine_mode get_address_mode (rtx mem); 2013 extern int rtx_addr_can_trap_p (const_rtx); 2014 extern bool nonzero_address_p (const_rtx); 2015 extern int rtx_unstable_p (const_rtx); 2016 extern bool rtx_varies_p (const_rtx, bool); 2017 extern bool rtx_addr_varies_p (const_rtx, bool); 2018 extern rtx get_call_rtx_from (rtx); 2019 extern HOST_WIDE_INT get_integer_term (const_rtx); 2020 extern rtx get_related_value (const_rtx); 2021 extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT); 2022 extern void split_const (rtx, rtx *, rtx *); 2023 extern bool unsigned_reg_p (rtx); 2024 extern int reg_mentioned_p (const_rtx, const_rtx); 2025 extern int count_occurrences (const_rtx, const_rtx, int); 2026 extern int reg_referenced_p (const_rtx, const_rtx); 2027 extern int reg_used_between_p (const_rtx, const_rtx, const_rtx); 2028 extern int reg_set_between_p (const_rtx, const_rtx, const_rtx); 2029 extern int commutative_operand_precedence (rtx); 2030 extern bool swap_commutative_operands_p (rtx, rtx); 2031 extern int modified_between_p (const_rtx, const_rtx, const_rtx); 2032 extern int no_labels_between_p (const_rtx, const_rtx); 2033 extern int modified_in_p (const_rtx, const_rtx); 2034 extern int reg_set_p (const_rtx, const_rtx); 2035 extern rtx single_set_2 (const_rtx, const_rtx); 2036 extern int multiple_sets (const_rtx); 2037 extern int set_noop_p (const_rtx); 2038 extern int noop_move_p (const_rtx); 2039 extern rtx find_last_value (rtx, rtx *, rtx, int); 2040 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *); 2041 extern int reg_overlap_mentioned_p (const_rtx, const_rtx); 2042 extern const_rtx set_of (const_rtx, const_rtx); 2043 extern void record_hard_reg_sets (rtx, const_rtx, void *); 2044 extern void record_hard_reg_uses (rtx *, void *); 2045 #ifdef HARD_CONST 2046 extern void find_all_hard_reg_sets (const_rtx, HARD_REG_SET *); 2047 #endif 2048 extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *); 2049 extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 2050 extern int dead_or_set_p (const_rtx, const_rtx); 2051 extern int dead_or_set_regno_p (const_rtx, unsigned int); 2052 extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx); 2053 extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int); 2054 extern rtx find_reg_equal_equiv_note (const_rtx); 2055 extern rtx find_constant_src (const_rtx); 2056 extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx); 2057 extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int); 2058 extern rtx alloc_reg_note (enum reg_note, rtx, rtx); 2059 extern void add_reg_note (rtx, enum reg_note, rtx); 2060 extern void remove_note (rtx, const_rtx); 2061 extern void remove_reg_equal_equiv_notes (rtx); 2062 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int); 2063 extern int side_effects_p (const_rtx); 2064 extern int volatile_refs_p (const_rtx); 2065 extern int volatile_insn_p (const_rtx); 2066 extern int may_trap_p_1 (const_rtx, unsigned); 2067 extern int may_trap_p (const_rtx); 2068 extern int may_trap_or_fault_p (const_rtx); 2069 extern bool can_throw_internal (const_rtx); 2070 extern bool can_throw_external (const_rtx); 2071 extern bool insn_could_throw_p (const_rtx); 2072 extern bool insn_nothrow_p (const_rtx); 2073 extern bool can_nonlocal_goto (const_rtx); 2074 extern void copy_reg_eh_region_note_forward (rtx, rtx, rtx); 2075 extern void copy_reg_eh_region_note_backward(rtx, rtx, rtx); 2076 extern int inequality_comparisons_p (const_rtx); 2077 extern rtx replace_rtx (rtx, rtx, rtx); 2078 extern int replace_label (rtx *, void *); 2079 extern int rtx_referenced_p (rtx, rtx); 2080 extern bool tablejump_p (const_rtx, rtx *, rtx *); 2081 extern int computed_jump_p (const_rtx); 2082 2083 typedef int (*rtx_function) (rtx *, void *); 2084 extern int for_each_rtx (rtx *, rtx_function, void *); 2085 2086 /* Callback for for_each_inc_dec, to process the autoinc operation OP 2087 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is 2088 NULL. The callback is passed the same opaque ARG passed to 2089 for_each_inc_dec. Return zero to continue looking for other 2090 autoinc operations, -1 to skip OP's operands, and any other value 2091 to interrupt the traversal and return that value to the caller of 2092 for_each_inc_dec. */ 2093 typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src, 2094 rtx srcoff, void *arg); 2095 extern int for_each_inc_dec (rtx *, for_each_inc_dec_fn, void *arg); 2096 2097 typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *, 2098 rtx *, rtx *); 2099 extern int rtx_equal_p_cb (const_rtx, const_rtx, 2100 rtx_equal_p_callback_function); 2101 2102 typedef int (*hash_rtx_callback_function) (const_rtx, enum machine_mode, rtx *, 2103 enum machine_mode *); 2104 extern unsigned hash_rtx_cb (const_rtx, enum machine_mode, int *, int *, 2105 bool, hash_rtx_callback_function); 2106 2107 extern rtx regno_use_in (unsigned int, rtx); 2108 extern int auto_inc_p (const_rtx); 2109 extern int in_expr_list_p (const_rtx, const_rtx); 2110 extern void remove_node_from_expr_list (const_rtx, rtx *); 2111 extern int loc_mentioned_in_p (rtx *, const_rtx); 2112 extern rtx find_first_parameter_load (rtx, rtx); 2113 extern bool keep_with_call_p (const_rtx); 2114 extern bool label_is_jump_target_p (const_rtx, const_rtx); 2115 extern int insn_rtx_cost (rtx, bool); 2116 2117 /* Given an insn and condition, return a canonical description of 2118 the test being made. */ 2119 extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int); 2120 2121 /* Given a JUMP_INSN, return a canonical description of the test 2122 being made. */ 2123 extern rtx get_condition (rtx, rtx *, int, int); 2124 2125 /* Information about a subreg of a hard register. */ 2126 struct subreg_info 2127 { 2128 /* Offset of first hard register involved in the subreg. */ 2129 int offset; 2130 /* Number of hard registers involved in the subreg. */ 2131 int nregs; 2132 /* Whether this subreg can be represented as a hard reg with the new 2133 mode. */ 2134 bool representable_p; 2135 }; 2136 2137 extern void subreg_get_info (unsigned int, enum machine_mode, 2138 unsigned int, enum machine_mode, 2139 struct subreg_info *); 2140 2141 /* lists.c */ 2142 2143 extern void free_EXPR_LIST_list (rtx *); 2144 extern void free_INSN_LIST_list (rtx *); 2145 extern void free_EXPR_LIST_node (rtx); 2146 extern void free_INSN_LIST_node (rtx); 2147 extern rtx alloc_INSN_LIST (rtx, rtx); 2148 extern rtx copy_INSN_LIST (rtx); 2149 extern rtx concat_INSN_LIST (rtx, rtx); 2150 extern rtx alloc_EXPR_LIST (int, rtx, rtx); 2151 extern void remove_free_INSN_LIST_elem (rtx, rtx *); 2152 extern rtx remove_list_elem (rtx, rtx *); 2153 extern rtx remove_free_INSN_LIST_node (rtx *); 2154 extern rtx remove_free_EXPR_LIST_node (rtx *); 2155 2156 2157 /* reginfo.c */ 2158 2159 /* Resize reg info. */ 2160 extern bool resize_reg_info (void); 2161 /* Free up register info memory. */ 2162 extern void free_reg_info (void); 2163 extern void init_subregs_of_mode (void); 2164 extern void finish_subregs_of_mode (void); 2165 2166 /* recog.c */ 2167 extern rtx extract_asm_operands (rtx); 2168 extern int asm_noperands (const_rtx); 2169 extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 2170 enum machine_mode *, location_t *); 2171 2172 extern enum reg_class reg_preferred_class (int); 2173 extern enum reg_class reg_alternate_class (int); 2174 extern enum reg_class reg_allocno_class (int); 2175 extern void setup_reg_classes (int, enum reg_class, enum reg_class, 2176 enum reg_class); 2177 2178 extern void split_all_insns (void); 2179 extern unsigned int split_all_insns_noflow (void); 2180 2181 #define MAX_SAVED_CONST_INT 64 2182 extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 2183 2184 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 2185 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 2186 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 2187 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 2188 extern GTY(()) rtx const_true_rtx; 2189 2190 extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE]; 2191 2192 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 2193 same as VOIDmode. */ 2194 2195 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 2196 2197 /* Likewise, for the constants 1 and 2 and -1. */ 2198 2199 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 2200 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 2201 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)]) 2202 2203 extern GTY(()) rtx pc_rtx; 2204 extern GTY(()) rtx cc0_rtx; 2205 extern GTY(()) rtx ret_rtx; 2206 extern GTY(()) rtx simple_return_rtx; 2207 2208 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 2209 is used to represent the frame pointer. This is because the 2210 hard frame pointer and the automatic variables are separated by an amount 2211 that cannot be determined until after register allocation. We can assume 2212 that in this case ELIMINABLE_REGS will be defined, one action of which 2213 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 2214 #ifndef HARD_FRAME_POINTER_REGNUM 2215 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 2216 #endif 2217 2218 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER 2219 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \ 2220 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM) 2221 #endif 2222 2223 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER 2224 #define HARD_FRAME_POINTER_IS_ARG_POINTER \ 2225 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM) 2226 #endif 2227 2228 /* Index labels for global_rtl. */ 2229 enum global_rtl_index 2230 { 2231 GR_STACK_POINTER, 2232 GR_FRAME_POINTER, 2233 /* For register elimination to work properly these hard_frame_pointer_rtx, 2234 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 2235 the same register. */ 2236 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 2237 GR_ARG_POINTER = GR_FRAME_POINTER, 2238 #endif 2239 #if HARD_FRAME_POINTER_IS_FRAME_POINTER 2240 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 2241 #else 2242 GR_HARD_FRAME_POINTER, 2243 #endif 2244 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 2245 #if HARD_FRAME_POINTER_IS_ARG_POINTER 2246 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 2247 #else 2248 GR_ARG_POINTER, 2249 #endif 2250 #endif 2251 GR_VIRTUAL_INCOMING_ARGS, 2252 GR_VIRTUAL_STACK_ARGS, 2253 GR_VIRTUAL_STACK_DYNAMIC, 2254 GR_VIRTUAL_OUTGOING_ARGS, 2255 GR_VIRTUAL_CFA, 2256 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY, 2257 2258 GR_MAX 2259 }; 2260 2261 /* Target-dependent globals. */ 2262 struct GTY(()) target_rtl { 2263 /* All references to the hard registers in global_rtl_index go through 2264 these unique rtl objects. On machines where the frame-pointer and 2265 arg-pointer are the same register, they use the same unique object. 2266 2267 After register allocation, other rtl objects which used to be pseudo-regs 2268 may be clobbered to refer to the frame-pointer register. 2269 But references that were originally to the frame-pointer can be 2270 distinguished from the others because they contain frame_pointer_rtx. 2271 2272 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little 2273 tricky: until register elimination has taken place hard_frame_pointer_rtx 2274 should be used if it is being set, and frame_pointer_rtx otherwise. After 2275 register elimination hard_frame_pointer_rtx should always be used. 2276 On machines where the two registers are same (most) then these are the 2277 same. */ 2278 rtx x_global_rtl[GR_MAX]; 2279 2280 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */ 2281 rtx x_pic_offset_table_rtx; 2282 2283 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM). 2284 This is used to implement __builtin_return_address for some machines; 2285 see for instance the MIPS port. */ 2286 rtx x_return_address_pointer_rtx; 2287 2288 /* Commonly used RTL for hard registers. These objects are not 2289 necessarily unique, so we allocate them separately from global_rtl. 2290 They are initialized once per compilation unit, then copied into 2291 regno_reg_rtx at the beginning of each function. */ 2292 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER]; 2293 2294 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */ 2295 rtx x_top_of_stack[MAX_MACHINE_MODE]; 2296 2297 /* Static hunks of RTL used by the aliasing code; these are treated 2298 as persistent to avoid unnecessary RTL allocations. */ 2299 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER]; 2300 2301 /* The default memory attributes for each mode. */ 2302 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE]; 2303 }; 2304 2305 extern GTY(()) struct target_rtl default_target_rtl; 2306 #if SWITCHABLE_TARGET 2307 extern struct target_rtl *this_target_rtl; 2308 #else 2309 #define this_target_rtl (&default_target_rtl) 2310 #endif 2311 2312 #define global_rtl \ 2313 (this_target_rtl->x_global_rtl) 2314 #define pic_offset_table_rtx \ 2315 (this_target_rtl->x_pic_offset_table_rtx) 2316 #define return_address_pointer_rtx \ 2317 (this_target_rtl->x_return_address_pointer_rtx) 2318 #define top_of_stack \ 2319 (this_target_rtl->x_top_of_stack) 2320 #define mode_mem_attrs \ 2321 (this_target_rtl->x_mode_mem_attrs) 2322 2323 /* All references to certain hard regs, except those created 2324 by allocating pseudo regs into them (when that's possible), 2325 go through these unique rtx objects. */ 2326 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 2327 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 2328 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 2329 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 2330 2331 #ifndef GENERATOR_FILE 2332 /* Return the attributes of a MEM rtx. */ 2333 static inline struct mem_attrs * 2334 get_mem_attrs (const_rtx x) 2335 { 2336 struct mem_attrs *attrs; 2337 2338 attrs = MEM_ATTRS (x); 2339 if (!attrs) 2340 attrs = mode_mem_attrs[(int) GET_MODE (x)]; 2341 return attrs; 2342 } 2343 #endif 2344 2345 /* Include the RTL generation functions. */ 2346 2347 #ifndef GENERATOR_FILE 2348 #include "genrtl.h" 2349 #undef gen_rtx_ASM_INPUT 2350 #define gen_rtx_ASM_INPUT(MODE, ARG0) \ 2351 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0) 2352 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \ 2353 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC)) 2354 #endif 2355 2356 /* There are some RTL codes that require special attention; the 2357 generation functions included above do the raw handling. If you 2358 add to this list, modify special_rtx in gengenrtl.c as well. */ 2359 2360 extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); 2361 extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); 2362 extern rtx gen_raw_REG (enum machine_mode, int); 2363 extern rtx gen_rtx_REG (enum machine_mode, unsigned); 2364 extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); 2365 extern rtx gen_rtx_MEM (enum machine_mode, rtx); 2366 2367 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 2368 2369 /* Virtual registers are used during RTL generation to refer to locations into 2370 the stack frame when the actual location isn't known until RTL generation 2371 is complete. The routine instantiate_virtual_regs replaces these with 2372 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 2373 a constant. */ 2374 2375 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 2376 2377 /* This points to the first word of the incoming arguments passed on the stack, 2378 either by the caller or by the callee when pretending it was passed by the 2379 caller. */ 2380 2381 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 2382 2383 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 2384 2385 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 2386 variable on the stack. Otherwise, it points to the first variable on 2387 the stack. */ 2388 2389 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 2390 2391 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 2392 2393 /* This points to the location of dynamically-allocated memory on the stack 2394 immediately after the stack pointer has been adjusted by the amount 2395 desired. */ 2396 2397 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 2398 2399 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 2400 2401 /* This points to the location in the stack at which outgoing arguments should 2402 be written when the stack is pre-pushed (arguments pushed using push 2403 insns always use sp). */ 2404 2405 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 2406 2407 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 2408 2409 /* This points to the Canonical Frame Address of the function. This 2410 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 2411 but is calculated relative to the arg pointer for simplicity; the 2412 frame pointer nor stack pointer are necessarily fixed relative to 2413 the CFA until after reload. */ 2414 2415 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 2416 2417 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 2418 2419 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 2420 2421 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT 2422 when finalized. */ 2423 2424 #define virtual_preferred_stack_boundary_rtx \ 2425 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY]) 2426 2427 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \ 2428 ((FIRST_VIRTUAL_REGISTER) + 5) 2429 2430 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5) 2431 2432 /* Nonzero if REGNUM is a pointer into the stack frame. */ 2433 #define REGNO_PTR_FRAME_P(REGNUM) \ 2434 ((REGNUM) == STACK_POINTER_REGNUM \ 2435 || (REGNUM) == FRAME_POINTER_REGNUM \ 2436 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 2437 || (REGNUM) == ARG_POINTER_REGNUM \ 2438 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 2439 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER)) 2440 2441 /* REGNUM never really appearing in the INSN stream. */ 2442 #define INVALID_REGNUM (~(unsigned int) 0) 2443 2444 /* REGNUM for which no debug information can be generated. */ 2445 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1) 2446 2447 extern rtx output_constant_def (tree, int); 2448 extern rtx lookup_constant_def (tree); 2449 2450 /* Nonzero after end of reload pass. 2451 Set to 1 or 0 by reload1.c. */ 2452 2453 extern int reload_completed; 2454 2455 /* Nonzero after thread_prologue_and_epilogue_insns has run. */ 2456 extern int epilogue_completed; 2457 2458 /* Set to 1 while reload_as_needed is operating. 2459 Required by some machines to handle any generated moves differently. */ 2460 2461 extern int reload_in_progress; 2462 2463 /* Set to 1 while in lra. */ 2464 extern int lra_in_progress; 2465 2466 /* This macro indicates whether you may create a new 2467 pseudo-register. */ 2468 2469 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed) 2470 2471 #ifdef STACK_REGS 2472 /* Nonzero after end of regstack pass. 2473 Set to 1 or 0 by reg-stack.c. */ 2474 extern int regstack_completed; 2475 #endif 2476 2477 /* If this is nonzero, we do not bother generating VOLATILE 2478 around volatile memory references, and we are willing to 2479 output indirect addresses. If cse is to follow, we reject 2480 indirect addresses so a useful potential cse is generated; 2481 if it is used only once, instruction combination will produce 2482 the same indirect address eventually. */ 2483 extern int cse_not_expected; 2484 2485 /* Translates rtx code to tree code, for those codes needed by 2486 REAL_ARITHMETIC. The function returns an int because the caller may not 2487 know what `enum tree_code' means. */ 2488 2489 extern int rtx_to_tree_code (enum rtx_code); 2490 2491 /* In cse.c */ 2492 extern int delete_trivially_dead_insns (rtx, int); 2493 extern int exp_equiv_p (const_rtx, const_rtx, int, bool); 2494 extern unsigned hash_rtx (const_rtx x, enum machine_mode, int *, int *, bool); 2495 2496 /* In dse.c */ 2497 extern bool check_for_inc_dec (rtx insn); 2498 2499 /* In jump.c */ 2500 extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 2501 extern bool jump_to_label_p (rtx); 2502 extern int condjump_p (const_rtx); 2503 extern int any_condjump_p (const_rtx); 2504 extern int any_uncondjump_p (const_rtx); 2505 extern rtx pc_set (const_rtx); 2506 extern rtx condjump_label (const_rtx); 2507 extern int simplejump_p (const_rtx); 2508 extern int returnjump_p (rtx); 2509 extern int eh_returnjump_p (rtx); 2510 extern int onlyjump_p (const_rtx); 2511 extern int only_sets_cc0_p (const_rtx); 2512 extern int sets_cc0_p (const_rtx); 2513 extern int invert_jump_1 (rtx, rtx); 2514 extern int invert_jump (rtx, rtx, int); 2515 extern int rtx_renumbered_equal_p (const_rtx, const_rtx); 2516 extern int true_regnum (const_rtx); 2517 extern unsigned int reg_or_subregno (const_rtx); 2518 extern int redirect_jump_1 (rtx, rtx); 2519 extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 2520 extern int redirect_jump (rtx, rtx, int); 2521 extern void rebuild_jump_labels (rtx); 2522 extern void rebuild_jump_labels_chain (rtx); 2523 extern rtx reversed_comparison (const_rtx, enum machine_mode); 2524 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx); 2525 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx, 2526 const_rtx, const_rtx); 2527 extern void delete_for_peephole (rtx, rtx); 2528 extern int condjump_in_parallel_p (const_rtx); 2529 2530 /* In emit-rtl.c. */ 2531 extern int max_reg_num (void); 2532 extern int max_label_num (void); 2533 extern int get_first_label_num (void); 2534 extern void maybe_set_first_label_num (rtx); 2535 extern void delete_insns_since (rtx); 2536 extern void mark_reg_pointer (rtx, int); 2537 extern void mark_user_reg (rtx); 2538 extern void reset_used_flags (rtx); 2539 extern void set_used_flags (rtx); 2540 extern void reorder_insns (rtx, rtx, rtx); 2541 extern void reorder_insns_nobb (rtx, rtx, rtx); 2542 extern int get_max_insn_count (void); 2543 extern int in_sequence_p (void); 2544 extern void init_emit (void); 2545 extern void init_emit_regs (void); 2546 extern void init_emit_once (void); 2547 extern void push_topmost_sequence (void); 2548 extern void pop_topmost_sequence (void); 2549 extern void set_new_first_and_last_insn (rtx, rtx); 2550 extern unsigned int unshare_all_rtl (void); 2551 extern void unshare_all_rtl_again (rtx); 2552 extern void unshare_all_rtl_in_chain (rtx); 2553 extern void verify_rtl_sharing (void); 2554 extern void link_cc0_insns (rtx); 2555 extern void add_insn (rtx); 2556 extern void add_insn_before (rtx, rtx, basic_block); 2557 extern void add_insn_after (rtx, rtx, basic_block); 2558 extern void remove_insn (rtx); 2559 extern rtx emit (rtx); 2560 extern void delete_insn (rtx); 2561 extern rtx entry_of_function (void); 2562 extern void emit_insn_at_entry (rtx); 2563 extern void delete_insn_chain (rtx, rtx, bool); 2564 extern rtx unlink_insn_chain (rtx, rtx); 2565 extern void delete_insn_and_edges (rtx); 2566 extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); 2567 extern rtx gen_const_mem (enum machine_mode, rtx); 2568 extern rtx gen_frame_mem (enum machine_mode, rtx); 2569 extern rtx gen_tmp_stack_mem (enum machine_mode, rtx); 2570 extern bool validate_subreg (enum machine_mode, enum machine_mode, 2571 const_rtx, unsigned int); 2572 2573 /* In combine.c */ 2574 extern unsigned int extended_count (const_rtx, enum machine_mode, int); 2575 extern rtx remove_death (unsigned int, rtx); 2576 extern void dump_combine_stats (FILE *); 2577 extern void dump_combine_total_stats (FILE *); 2578 extern rtx make_compound_operation (rtx, enum rtx_code); 2579 2580 /* In cfgcleanup.c */ 2581 extern void delete_dead_jumptables (void); 2582 2583 /* In sched-rgn.c. */ 2584 extern void schedule_insns (void); 2585 2586 /* In sched-ebb.c. */ 2587 extern void schedule_ebbs (void); 2588 2589 /* In sel-sched-dump.c. */ 2590 extern void sel_sched_fix_param (const char *param, const char *val); 2591 2592 /* In print-rtl.c */ 2593 extern const char *print_rtx_head; 2594 extern void debug_rtx (const_rtx); 2595 extern void debug_rtx_list (const_rtx, int); 2596 extern void debug_rtx_range (const_rtx, const_rtx); 2597 extern const_rtx debug_rtx_find (const_rtx, int); 2598 extern void print_mem_expr (FILE *, const_tree); 2599 extern void print_rtl (FILE *, const_rtx); 2600 extern void print_simple_rtl (FILE *, const_rtx); 2601 extern int print_rtl_single (FILE *, const_rtx); 2602 extern int print_rtl_single_with_indent (FILE *, const_rtx, int); 2603 extern void print_inline_rtx (FILE *, const_rtx, int); 2604 2605 /* Functions in sched-vis.c. FIXME: Ideally these functions would 2606 not be in sched-vis.c but in rtl.c, because they are not only used 2607 by the scheduler anymore but for all "slim" RTL dumping. */ 2608 extern void dump_value_slim (FILE *, const_rtx, int); 2609 extern void dump_insn_slim (FILE *, const_rtx); 2610 extern void dump_rtl_slim (FILE *, const_rtx, const_rtx, int, int); 2611 extern void print_value (pretty_printer *, const_rtx, int); 2612 extern void print_pattern (pretty_printer *, const_rtx, int); 2613 extern void print_insn (pretty_printer *, const_rtx, int); 2614 extern void rtl_dump_bb_for_graph (pretty_printer *, basic_block); 2615 extern const char *str_pattern_slim (const_rtx); 2616 2617 /* In function.c */ 2618 extern void reposition_prologue_and_epilogue_notes (void); 2619 extern int prologue_epilogue_contains (const_rtx); 2620 extern int sibcall_epilogue_contains (const_rtx); 2621 extern void update_temp_slot_address (rtx, rtx); 2622 extern void maybe_copy_prologue_epilogue_insn (rtx, rtx); 2623 extern void set_return_jump_label (rtx); 2624 2625 /* In stmt.c */ 2626 extern void expand_null_return (void); 2627 extern void expand_naked_return (void); 2628 extern void emit_jump (rtx); 2629 2630 /* In expr.c */ 2631 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 2632 unsigned int, int); 2633 extern HOST_WIDE_INT find_args_size_adjust (rtx); 2634 extern int fixup_args_size_notes (rtx, rtx, int); 2635 2636 /* In cfgrtl.c */ 2637 extern void print_rtl_with_bb (FILE *, const_rtx, int); 2638 extern rtx duplicate_insn_chain (rtx, rtx); 2639 2640 /* In expmed.c */ 2641 extern void init_expmed (void); 2642 extern void expand_inc (rtx, rtx); 2643 extern void expand_dec (rtx, rtx); 2644 2645 /* In lower-subreg.c */ 2646 extern void init_lower_subreg (void); 2647 2648 /* In gcse.c */ 2649 extern bool can_copy_p (enum machine_mode); 2650 extern bool can_assign_to_reg_without_clobbers_p (rtx); 2651 extern rtx fis_get_condition (rtx); 2652 2653 /* In ira.c */ 2654 #ifdef HARD_CONST 2655 extern HARD_REG_SET eliminable_regset; 2656 #endif 2657 extern void mark_elimination (int, int); 2658 2659 /* In reginfo.c */ 2660 extern int reg_classes_intersect_p (reg_class_t, reg_class_t); 2661 extern int reg_class_subset_p (reg_class_t, reg_class_t); 2662 extern void globalize_reg (tree, int); 2663 extern void init_reg_modes_target (void); 2664 extern void init_regs (void); 2665 extern void reinit_regs (void); 2666 extern void init_fake_stack_mems (void); 2667 extern void save_register_info (void); 2668 extern void init_reg_sets (void); 2669 extern void regclass (rtx, int); 2670 extern void reg_scan (rtx, unsigned int); 2671 extern void fix_register (const char *, int, int); 2672 extern bool invalid_mode_change_p (unsigned int, enum reg_class); 2673 2674 /* In reorg.c */ 2675 extern void dbr_schedule (rtx); 2676 2677 /* In reload1.c */ 2678 extern int function_invariant_p (const_rtx); 2679 2680 /* In calls.c */ 2681 enum libcall_type 2682 { 2683 LCT_NORMAL = 0, 2684 LCT_CONST = 1, 2685 LCT_PURE = 2, 2686 LCT_NORETURN = 3, 2687 LCT_THROW = 4, 2688 LCT_RETURNS_TWICE = 5 2689 }; 2690 2691 extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, 2692 ...); 2693 extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 2694 enum machine_mode, int, ...); 2695 2696 /* In varasm.c */ 2697 extern void init_varasm_once (void); 2698 2699 extern rtx make_debug_expr_from_rtl (const_rtx); 2700 2701 /* In read-rtl.c */ 2702 extern bool read_rtx (const char *, rtx *); 2703 2704 /* In alias.c */ 2705 extern rtx canon_rtx (rtx); 2706 extern int true_dependence (const_rtx, enum machine_mode, const_rtx); 2707 extern rtx get_addr (rtx); 2708 extern int canon_true_dependence (const_rtx, enum machine_mode, rtx, 2709 const_rtx, rtx); 2710 extern int read_dependence (const_rtx, const_rtx); 2711 extern int anti_dependence (const_rtx, const_rtx); 2712 extern int canon_anti_dependence (const_rtx, bool, 2713 const_rtx, enum machine_mode, rtx); 2714 extern int output_dependence (const_rtx, const_rtx); 2715 extern int may_alias_p (const_rtx, const_rtx); 2716 extern void init_alias_target (void); 2717 extern void init_alias_analysis (void); 2718 extern void end_alias_analysis (void); 2719 extern void vt_equate_reg_base_value (const_rtx, const_rtx); 2720 extern bool memory_modified_in_insn_p (const_rtx, const_rtx); 2721 extern bool memory_must_be_modified_in_insn_p (const_rtx, const_rtx); 2722 extern bool may_be_sp_based_p (rtx); 2723 extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); 2724 extern rtx get_reg_known_value (unsigned int); 2725 extern bool get_reg_known_equiv_p (unsigned int); 2726 extern rtx get_reg_base_value (unsigned int); 2727 2728 #ifdef STACK_REGS 2729 extern int stack_regs_mentioned (const_rtx insn); 2730 #endif 2731 2732 /* In toplev.c */ 2733 extern GTY(()) rtx stack_limit_rtx; 2734 2735 /* In predict.c */ 2736 extern void invert_br_probabilities (rtx); 2737 extern bool expensive_function_p (int); 2738 2739 /* In var-tracking.c */ 2740 extern unsigned int variable_tracking_main (void); 2741 2742 /* In stor-layout.c. */ 2743 extern void get_mode_bounds (enum machine_mode, int, enum machine_mode, 2744 rtx *, rtx *); 2745 2746 /* In loop-unswitch.c */ 2747 extern rtx reversed_condition (rtx); 2748 extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); 2749 2750 /* In loop-iv.c */ 2751 extern rtx canon_condition (rtx); 2752 extern void simplify_using_condition (rtx, rtx *, bitmap); 2753 2754 /* In final.c */ 2755 extern unsigned int compute_alignments (void); 2756 extern int asm_str_count (const char *templ); 2757 2758 struct rtl_hooks 2760 { 2761 rtx (*gen_lowpart) (enum machine_mode, rtx); 2762 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx); 2763 rtx (*reg_nonzero_bits) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2764 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 2765 rtx (*reg_num_sign_bit_copies) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2766 unsigned int, unsigned int *); 2767 bool (*reg_truncated_to_mode) (enum machine_mode, const_rtx); 2768 2769 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 2770 }; 2771 2772 /* Each pass can provide its own. */ 2773 extern struct rtl_hooks rtl_hooks; 2774 2775 /* ... but then it has to restore these. */ 2776 extern const struct rtl_hooks general_rtl_hooks; 2777 2778 /* Keep this for the nonce. */ 2779 #define gen_lowpart rtl_hooks.gen_lowpart 2780 2781 extern void insn_locations_init (void); 2782 extern void insn_locations_finalize (void); 2783 extern void set_curr_insn_location (location_t); 2784 extern location_t curr_insn_location (void); 2785 extern bool optimize_insn_for_size_p (void); 2786 extern bool optimize_insn_for_speed_p (void); 2787 2788 /* rtl-error.c */ 2789 extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *) 2790 ATTRIBUTE_NORETURN; 2791 extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *) 2792 ATTRIBUTE_NORETURN; 2793 2794 #define fatal_insn(msgid, insn) \ 2795 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__) 2796 #define fatal_insn_not_found(insn) \ 2797 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__) 2798 2799 /* reginfo.c */ 2800 extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER]; 2801 2802 2803 #endif /* ! GCC_RTL_H */ 2804
