1 /* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 4 Free Software Foundation, Inc. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 3, or (at your option) any later 11 version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #ifndef GCC_RTL_H 23 #define GCC_RTL_H 24 25 #include "statistics.h" 26 #include "machmode.h" 27 #include "input.h" 28 #include "real.h" 29 #include "vec.h" 30 #include "fixed-value.h" 31 #include "alias.h" 32 33 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 34 #undef FLOAT /* Likewise. */ 35 #undef ABS /* Likewise. */ 36 #undef PC /* Likewise. */ 37 38 /* Value used by some passes to "recognize" noop moves as valid 39 instructions. */ 40 #define NOOP_MOVE_INSN_CODE INT_MAX 41 42 /* Register Transfer Language EXPRESSIONS CODES */ 43 44 #define RTX_CODE enum rtx_code 45 enum rtx_code { 46 47 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , 48 #include "rtl.def" /* rtl expressions are documented here */ 49 #undef DEF_RTL_EXPR 50 51 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for 52 NUM_RTX_CODE. 53 Assumes default enum value assignment. */ 54 55 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 56 /* The cast here, saves many elsewhere. */ 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. If any element is nonzero, it means 139 the value of the corresponding attribute is unknown. */ 140 /* ALIGN and SIZE are the alignment and size of the MEM itself, 141 while EXPR can describe a larger underlying object, which might have a 142 stricter alignment; OFFSET is the offset of the MEM within that object. */ 143 typedef struct mem_attrs GTY(()) 144 { 145 tree expr; /* expr corresponding to MEM. */ 146 rtx offset; /* Offset from start of DECL, as CONST_INT. */ 147 rtx size; /* Size in bytes, as a CONST_INT. */ 148 alias_set_type alias; /* Memory alias set. */ 149 unsigned int align; /* Alignment of MEM in bits. */ 150 } mem_attrs; 151 152 /* Structure used to describe the attributes of a REG in similar way as 153 mem_attrs does for MEM above. Note that the OFFSET field is calculated 154 in the same way as for mem_attrs, rather than in the same way as a 155 SUBREG_BYTE. For example, if a big-endian target stores a byte 156 object in the low part of a 4-byte register, the OFFSET field 157 will be -3 rather than 0. */ 158 159 typedef struct reg_attrs GTY(()) 160 { 161 tree decl; /* decl corresponding to REG. */ 162 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 163 } reg_attrs; 164 165 /* Common union for an element of an rtx. */ 166 167 union rtunion_def 168 { 169 int rt_int; 170 unsigned int rt_uint; 171 const char *rt_str; 172 rtx rt_rtx; 173 rtvec rt_rtvec; 174 enum machine_mode rt_type; 175 addr_diff_vec_flags rt_addr_diff_vec_flags; 176 struct cselib_val_struct *rt_cselib; 177 struct bitmap_head_def *rt_bit; 178 tree rt_tree; 179 struct basic_block_def *rt_bb; 180 mem_attrs *rt_mem; 181 reg_attrs *rt_reg; 182 struct constant_descriptor_rtx *rt_constant; 183 }; 184 typedef union rtunion_def rtunion; 185 186 /* This structure remembers the position of a SYMBOL_REF within an 187 object_block structure. A SYMBOL_REF only provides this information 188 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 189 struct block_symbol GTY(()) { 190 /* The usual SYMBOL_REF fields. */ 191 rtunion GTY ((skip)) fld[3]; 192 193 /* The block that contains this object. */ 194 struct object_block *block; 195 196 /* The offset of this object from the start of its block. It is negative 197 if the symbol has not yet been assigned an offset. */ 198 HOST_WIDE_INT offset; 199 }; 200 201 DEF_VEC_P(rtx); 202 DEF_VEC_ALLOC_P(rtx,heap); 203 DEF_VEC_ALLOC_P(rtx,gc); 204 205 /* Describes a group of objects that are to be placed together in such 206 a way that their relative positions are known. */ 207 struct object_block GTY(()) 208 { 209 /* The section in which these objects should be placed. */ 210 section *sect; 211 212 /* The alignment of the first object, measured in bits. */ 213 unsigned int alignment; 214 215 /* The total size of the objects, measured in bytes. */ 216 HOST_WIDE_INT size; 217 218 /* The SYMBOL_REFs for each object. The vector is sorted in 219 order of increasing offset and the following conditions will 220 hold for each element X: 221 222 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 223 !SYMBOL_REF_ANCHOR_P (X) 224 SYMBOL_REF_BLOCK (X) == [address of this structure] 225 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 226 VEC(rtx,gc) *objects; 227 228 /* All the anchor SYMBOL_REFs used to address these objects, sorted 229 in order of increasing offset, and then increasing TLS model. 230 The following conditions will hold for each element X in this vector: 231 232 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 233 SYMBOL_REF_ANCHOR_P (X) 234 SYMBOL_REF_BLOCK (X) == [address of this structure] 235 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 236 VEC(rtx,gc) *anchors; 237 }; 238 239 /* RTL expression ("rtx"). */ 240 241 struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"), 242 chain_prev ("RTX_PREV (&%h)"))) 243 { 244 /* The kind of expression this is. */ 245 ENUM_BITFIELD(rtx_code) code: 16; 246 247 /* The kind of value the expression has. */ 248 ENUM_BITFIELD(machine_mode) mode : 8; 249 250 /* 1 in a MEM if we should keep the alias set for this mem unchanged 251 when we access a component. 252 1 in a CALL_INSN if it is a sibling call. 253 1 in a SET that is for a return. 254 In a CODE_LABEL, part of the two-bit alternate entry field. */ 255 unsigned int jump : 1; 256 /* In a CODE_LABEL, part of the two-bit alternate entry field. 257 1 in a MEM if it cannot trap. 258 1 in a CALL_INSN logically equivalent to 259 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 260 unsigned int call : 1; 261 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 262 1 in a SUBREG if it references an unsigned object whose mode has been 263 from a promoted to a wider mode. 264 1 in a SYMBOL_REF if it addresses something in the per-function 265 constants pool. 266 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY. 267 1 in a NOTE, or EXPR_LIST for a const call. 268 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */ 269 unsigned int unchanging : 1; 270 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 271 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 272 if it has been deleted. 273 1 in a REG expression if corresponds to a variable declared by the user, 274 0 for an internally generated temporary. 275 1 in a SUBREG with a negative value. 276 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a 277 non-local label. 278 In a SYMBOL_REF, this flag is used for machine-specific purposes. */ 279 unsigned int volatil : 1; 280 /* 1 in a MEM referring to a field of an aggregate. 281 0 if the MEM was a variable or the result of a * operator in C; 282 1 if it was the result of a . or -> operator (on a struct) in C. 283 1 in a REG if the register is used only in exit code a loop. 284 1 in a SUBREG expression if was generated from a variable with a 285 promoted mode. 286 1 in a CODE_LABEL if the label is used for nonlocal gotos 287 and must not be deleted even if its count is zero. 288 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 289 together with the preceding insn. Valid only within sched. 290 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 291 from the target of a branch. Valid from reorg until end of compilation; 292 cleared before used. */ 293 unsigned int in_struct : 1; 294 /* At the end of RTL generation, 1 if this rtx is used. This is used for 295 copying shared structure. See `unshare_all_rtl'. 296 In a REG, this is not needed for that purpose, and used instead 297 in `leaf_renumber_regs_insn'. 298 1 in a SYMBOL_REF, means that emit_library_call 299 has used it as the function. */ 300 unsigned int used : 1; 301 /* 1 in an INSN or a SET if this rtx is related to the call frame, 302 either changing how we compute the frame address or saving and 303 restoring registers in the prologue and epilogue. 304 1 in a REG or MEM if it is a pointer. 305 1 in a SYMBOL_REF if it addresses something in the per-function 306 constant string pool. */ 307 unsigned frame_related : 1; 308 /* 1 in a REG or PARALLEL that is the current function's return value. 309 1 in a MEM if it refers to a scalar. 310 1 in a SYMBOL_REF for a weak symbol. 311 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. */ 312 unsigned return_val : 1; 313 314 /* The first element of the operands of this rtx. 315 The number of operands and their types are controlled 316 by the `code' field, according to rtl.def. */ 317 union u { 318 rtunion fld[1]; 319 HOST_WIDE_INT hwint[1]; 320 struct block_symbol block_sym; 321 struct real_value rv; 322 struct fixed_value fv; 323 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 324 }; 325 326 /* The size in bytes of an rtx header (code, mode and flags). */ 327 #define RTX_HDR_SIZE offsetof (struct rtx_def, u) 328 329 /* The size in bytes of an rtx with code CODE. */ 330 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 331 332 #define NULL_RTX (rtx) 0 333 334 /* The "next" and "previous" RTX, relative to this one. */ 335 336 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 337 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 338 339 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 340 */ 341 #define RTX_PREV(X) ((INSN_P (X) \ 342 || NOTE_P (X) \ 343 || BARRIER_P (X) \ 344 || LABEL_P (X)) \ 345 && PREV_INSN (X) != NULL \ 346 && NEXT_INSN (PREV_INSN (X)) == X \ 347 ? PREV_INSN (X) : NULL) 348 349 /* Define macros to access the `code' field of the rtx. */ 350 351 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 352 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 353 354 #define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) 355 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 356 357 /* RTL vector. These appear inside RTX's when there is a need 358 for a variable number of things. The principle use is inside 359 PARALLEL expressions. */ 360 361 struct rtvec_def GTY(()) { 362 int num_elem; /* number of elements */ 363 rtx GTY ((length ("%h.num_elem"))) elem[1]; 364 }; 365 366 #define NULL_RTVEC (rtvec) 0 367 368 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 369 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 370 371 /* Predicate yielding nonzero iff X is an rtx for a register. */ 372 #define REG_P(X) (GET_CODE (X) == REG) 373 374 /* Predicate yielding nonzero iff X is an rtx for a memory location. */ 375 #define MEM_P(X) (GET_CODE (X) == MEM) 376 377 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 378 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 379 380 /* Predicate yielding nonzero iff X is a label insn. */ 381 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 382 383 /* Predicate yielding nonzero iff X is a jump insn. */ 384 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 385 386 /* Predicate yielding nonzero iff X is a call insn. */ 387 #define CALL_P(X) (GET_CODE (X) == CALL_INSN) 388 389 /* Predicate yielding nonzero iff X is an insn that cannot jump. */ 390 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 391 392 /* Predicate yielding nonzero iff X is a debug note/insn. */ 393 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN) 394 395 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */ 396 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) 397 398 /* Predicate yielding nonzero iff X is a real insn. */ 399 #define INSN_P(X) \ 400 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 401 402 /* Predicate yielding nonzero iff X is a note insn. */ 403 #define NOTE_P(X) (GET_CODE (X) == NOTE) 404 405 /* Predicate yielding nonzero iff X is a barrier insn. */ 406 #define BARRIER_P(X) (GET_CODE (X) == BARRIER) 407 408 /* Predicate yielding nonzero iff X is a data for a jump table. */ 409 #define JUMP_TABLE_DATA_P(INSN) \ 410 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ 411 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) 412 413 /* 1 if X is a unary operator. */ 414 415 #define UNARY_P(X) \ 416 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 417 418 /* 1 if X is a binary operator. */ 419 420 #define BINARY_P(X) \ 421 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 422 423 /* 1 if X is an arithmetic operator. */ 424 425 #define ARITHMETIC_P(X) \ 426 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 427 == RTX_ARITHMETIC_RESULT) 428 429 /* 1 if X is an arithmetic operator. */ 430 431 #define COMMUTATIVE_ARITH_P(X) \ 432 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 433 434 /* 1 if X is a commutative arithmetic operator or a comparison operator. 435 These two are sometimes selected together because it is possible to 436 swap the two operands. */ 437 438 #define SWAPPABLE_OPERANDS_P(X) \ 439 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 440 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 441 | (1 << RTX_COMPARE))) 442 443 /* 1 if X is a non-commutative operator. */ 444 445 #define NON_COMMUTATIVE_P(X) \ 446 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 447 == RTX_NON_COMMUTATIVE_RESULT) 448 449 /* 1 if X is a commutative operator on integers. */ 450 451 #define COMMUTATIVE_P(X) \ 452 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 453 == RTX_COMMUTATIVE_RESULT) 454 455 /* 1 if X is a relational operator. */ 456 457 #define COMPARISON_P(X) \ 458 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 459 460 /* 1 if X is a constant value that is an integer. */ 461 462 #define CONSTANT_P(X) \ 463 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 464 465 /* 1 if X can be used to represent an object. */ 466 #define OBJECT_P(X) \ 467 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 468 469 /* General accessor macros for accessing the fields of an rtx. */ 470 471 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 472 /* The bit with a star outside the statement expr and an & inside is 473 so that N can be evaluated only once. */ 474 #define RTL_CHECK1(RTX, N, C1) __extension__ \ 475 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 476 const enum rtx_code _code = GET_CODE (_rtx); \ 477 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 478 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 479 __FUNCTION__); \ 480 if (GET_RTX_FORMAT(_code)[_n] != C1) \ 481 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 482 __FUNCTION__); \ 483 &_rtx->u.fld[_n]; })) 484 485 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 486 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 487 const enum rtx_code _code = GET_CODE (_rtx); \ 488 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 489 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 490 __FUNCTION__); \ 491 if (GET_RTX_FORMAT(_code)[_n] != C1 \ 492 && GET_RTX_FORMAT(_code)[_n] != C2) \ 493 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 494 __FUNCTION__); \ 495 &_rtx->u.fld[_n]; })) 496 497 #define RTL_CHECKC1(RTX, N, C) __extension__ \ 498 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 499 if (GET_CODE (_rtx) != (C)) \ 500 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 501 __FUNCTION__); \ 502 &_rtx->u.fld[_n]; })) 503 504 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 505 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 506 const enum rtx_code _code = GET_CODE (_rtx); \ 507 if (_code != (C1) && _code != (C2)) \ 508 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 509 __FUNCTION__); \ 510 &_rtx->u.fld[_n]; })) 511 512 #define RTVEC_ELT(RTVEC, I) __extension__ \ 513 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \ 514 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 515 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 516 __FUNCTION__); \ 517 &_rtvec->elem[_i]; })) 518 519 #define XWINT(RTX, N) __extension__ \ 520 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 521 const enum rtx_code _code = GET_CODE (_rtx); \ 522 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 523 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 524 __FUNCTION__); \ 525 if (GET_RTX_FORMAT(_code)[_n] != 'w') \ 526 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 527 __FUNCTION__); \ 528 &_rtx->u.hwint[_n]; })) 529 530 #define XCWINT(RTX, N, C) __extension__ \ 531 (*({ __typeof (RTX) const _rtx = (RTX); \ 532 if (GET_CODE (_rtx) != (C)) \ 533 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 534 __FUNCTION__); \ 535 &_rtx->u.hwint[N]; })) 536 537 #define XCMWINT(RTX, N, C, M) __extension__ \ 538 (*({ __typeof (RTX) const _rtx = (RTX); \ 539 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 540 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 541 __LINE__, __FUNCTION__); \ 542 &_rtx->u.hwint[N]; })) 543 544 #define XCNMPRV(RTX, C, M) __extension__ \ 545 ({ __typeof (RTX) const _rtx = (RTX); \ 546 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 547 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 548 __LINE__, __FUNCTION__); \ 549 &_rtx->u.rv; }) 550 551 #define XCNMPFV(RTX, C, M) __extension__ \ 552 ({ __typeof (RTX) const _rtx = (RTX); \ 553 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 554 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 555 __LINE__, __FUNCTION__); \ 556 &_rtx->u.fv; }) 557 558 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 559 ({ __typeof (RTX) const _symbol = (RTX); \ 560 const unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \ 561 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 562 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 563 __FUNCTION__); \ 564 &_symbol->u.block_sym; }) 565 566 extern void rtl_check_failed_bounds (const_rtx, int, const char *, int, 567 const char *) 568 ATTRIBUTE_NORETURN; 569 extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int, 570 const char *) 571 ATTRIBUTE_NORETURN; 572 extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *, 573 int, const char *) 574 ATTRIBUTE_NORETURN; 575 extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *, 576 int, const char *) 577 ATTRIBUTE_NORETURN; 578 extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code, 579 const char *, int, const char *) 580 ATTRIBUTE_NORETURN; 581 extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, enum machine_mode, 582 bool, const char *, int, const char *) 583 ATTRIBUTE_NORETURN; 584 extern void rtl_check_failed_block_symbol (const char *, int, const char *) 585 ATTRIBUTE_NORETURN; 586 extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int, 587 const char *) 588 ATTRIBUTE_NORETURN; 589 590 #else /* not ENABLE_RTL_CHECKING */ 591 592 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 593 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 594 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) 595 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 596 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) 597 #define XWINT(RTX, N) ((RTX)->u.hwint[N]) 598 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 599 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 600 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 601 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 602 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv) 603 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 604 605 #endif 606 607 /* General accessor macros for accessing the flags of an rtx. */ 608 609 /* Access an individual rtx flag, with no checking of any kind. */ 610 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 611 612 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 613 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 614 ({ __typeof (RTX) const _rtx = (RTX); \ 615 if (GET_CODE(_rtx) != C1) \ 616 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 617 __FUNCTION__); \ 618 _rtx; }) 619 620 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 621 ({ __typeof (RTX) const _rtx = (RTX); \ 622 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ 623 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 624 __FUNCTION__); \ 625 _rtx; }) 626 627 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 628 ({ __typeof (RTX) const _rtx = (RTX); \ 629 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 630 && GET_CODE(_rtx) != C3) \ 631 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 632 __FUNCTION__); \ 633 _rtx; }) 634 635 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 636 ({ __typeof (RTX) const _rtx = (RTX); \ 637 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 638 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ 639 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 640 __FUNCTION__); \ 641 _rtx; }) 642 643 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 644 ({ __typeof (RTX) const _rtx = (RTX); \ 645 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 646 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 647 && GET_CODE(_rtx) != C5) \ 648 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 649 __FUNCTION__); \ 650 _rtx; }) 651 652 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 653 __extension__ \ 654 ({ __typeof (RTX) const _rtx = (RTX); \ 655 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 656 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 657 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ 658 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 659 __FUNCTION__); \ 660 _rtx; }) 661 662 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 663 __extension__ \ 664 ({ __typeof (RTX) const _rtx = (RTX); \ 665 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 666 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 667 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 668 && GET_CODE(_rtx) != C7) \ 669 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 670 __FUNCTION__); \ 671 _rtx; }) 672 673 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ 674 __extension__ \ 675 ({ __typeof (RTX) const _rtx = (RTX); \ 676 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 677 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 678 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 679 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ 680 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 681 __FUNCTION__); \ 682 _rtx; }) 683 684 extern void rtl_check_failed_flag (const char *, const_rtx, const char *, 685 int, const char *) 686 ATTRIBUTE_NORETURN 687 ; 688 689 #else /* not ENABLE_RTL_FLAG_CHECKING */ 690 691 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 692 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 693 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 694 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 695 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 696 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 697 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 698 #define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) 699 #endif 700 701 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 702 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 703 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 704 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 705 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 706 #define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rt_bit) 707 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 708 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 709 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 710 711 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 712 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 713 714 /* These are like XINT, etc. except that they expect a '0' field instead 715 of the normal type code. */ 716 717 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 718 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 719 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 720 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 721 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 722 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 723 #define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bit) 724 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 725 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 726 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 727 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 728 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 729 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 730 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 731 732 /* Access a '0' field with any type. */ 733 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 734 735 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 736 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 737 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 738 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 739 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 740 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 741 #define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit) 742 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 743 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 744 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 745 746 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 747 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 748 749 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 750 751 /* ACCESS MACROS for particular fields of insns. */ 753 754 /* Holds a unique number for each insn. 755 These are not necessarily sequentially increasing. */ 756 #define INSN_UID(INSN) XINT (INSN, 0) 757 758 /* Chain insns together in sequence. */ 759 #define PREV_INSN(INSN) XEXP (INSN, 1) 760 #define NEXT_INSN(INSN) XEXP (INSN, 2) 761 762 #define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) 763 #define INSN_LOCATOR(INSN) XINT (INSN, 4) 764 /* The body of an insn. */ 765 #define PATTERN(INSN) XEXP (INSN, 5) 766 767 /* Code number of instruction, from when it was recognized. 768 -1 means this instruction has not been recognized yet. */ 769 #define INSN_CODE(INSN) XINT (INSN, 6) 770 771 #define RTX_FRAME_RELATED_P(RTX) \ 772 (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \ 773 JUMP_INSN, BARRIER, SET)->frame_related) 774 775 /* 1 if RTX is an insn that has been deleted. */ 776 #define INSN_DELETED_P(RTX) \ 777 (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \ 778 CODE_LABEL, BARRIER, NOTE)->volatil) 779 780 /* 1 if RTX is a call to a const function. Built from ECF_CONST and 781 TREE_READONLY. */ 782 #define RTL_CONST_CALL_P(RTX) \ 783 (RTL_FLAG_CHECK1("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging) 784 785 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and 786 DECL_PURE_P. */ 787 #define RTL_PURE_CALL_P(RTX) \ 788 (RTL_FLAG_CHECK1("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val) 789 790 /* 1 if RTX is a call to a const or pure function. */ 791 #define RTL_CONST_OR_PURE_CALL_P(RTX) \ 792 (RTL_CONST_CALL_P(RTX) || RTL_PURE_CALL_P(RTX)) 793 794 /* 1 if RTX is a call to a looping const or pure function. Built from 795 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 796 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \ 797 (RTL_FLAG_CHECK1("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call) 798 799 /* 1 if RTX is a call_insn for a sibling call. */ 800 #define SIBLING_CALL_P(RTX) \ 801 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 802 803 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 804 #define INSN_ANNULLED_BRANCH_P(RTX) \ 805 (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging) 806 807 /* 1 if RTX is an insn in a delay slot and is from the target of the branch. 808 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 809 executed if the branch is taken. For annulled branches with this bit 810 clear, the insn should be executed only if the branch is not taken. */ 811 #define INSN_FROM_TARGET_P(RTX) \ 812 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) 813 814 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 815 See the comments for ADDR_DIFF_VEC in rtl.def. */ 816 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) 817 818 /* In a VALUE, the value cselib has assigned to RTX. 819 This is a "struct cselib_val_struct", see cselib.h. */ 820 #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) 821 822 /* Holds a list of notes on what this insn does to various REGs. 823 It is a chain of EXPR_LIST rtx's, where the second operand is the 824 chain pointer and the first operand is the REG being described. 825 The mode field of the EXPR_LIST contains not a real machine mode 826 but a value from enum reg_note. */ 827 #define REG_NOTES(INSN) XEXP(INSN, 7) 828 829 enum reg_note 830 { 831 #define DEF_REG_NOTE(NAME) NAME, 832 #include "reg-notes.def" 833 #undef DEF_REG_NOTE 834 REG_NOTE_MAX 835 }; 836 837 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 838 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 839 #define PUT_REG_NOTE_KIND(LINK, KIND) \ 840 PUT_MODE (LINK, (enum machine_mode) (KIND)) 841 842 /* Names for REG_NOTE's in EXPR_LIST insn's. */ 843 844 extern const char * const reg_note_name[]; 845 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 846 847 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 848 USE and CLOBBER expressions. 849 USE expressions list the registers filled with arguments that 850 are passed to the function. 851 CLOBBER expressions document the registers explicitly clobbered 852 by this CALL_INSN. 853 Pseudo registers can not be mentioned in this list. */ 854 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 8) 855 856 /* The label-number of a code-label. The assembler label 857 is made from `L' and the label-number printed in decimal. 858 Label numbers are unique in a compilation. */ 859 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) 860 861 /* In a NOTE that is a line number, this is a string for the file name that the 862 line is in. We use the same field to record block numbers temporarily in 863 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 864 between ints and pointers if we use a different macro for the block number.) 865 */ 866 867 /* Opaque data. */ 868 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) 869 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE) 870 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN); 871 #define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) 872 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) 873 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) 874 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) 875 876 /* In a NOTE that is a line number, this is the line number. 877 Other kinds of NOTEs are identified by negative numbers here. */ 878 #define NOTE_KIND(INSN) XCINT (INSN, 5, NOTE) 879 880 /* Nonzero if INSN is a note marking the beginning of a basic block. */ 881 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 882 (GET_CODE (INSN) == NOTE \ 883 && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK) 884 885 /* Variable declaration and the location of a variable. */ 886 #define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \ 887 0, VAR_LOCATION)) 888 #define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \ 889 1, VAR_LOCATION)) 890 891 /* Initialization status of the variable in the location. Status 892 can be unknown, uninitialized or initialized. See enumeration 893 type below. */ 894 #define NOTE_VAR_LOCATION_STATUS(INSN) (XCINT (XCEXP (INSN, 4, NOTE), \ 895 2, VAR_LOCATION)) 896 897 /* Possible initialization status of a variable. When requested 898 by the user, this information is tracked and recorded in the DWARF 899 debug information, along with the variable's location. */ 900 enum var_init_status 901 { 902 VAR_INIT_STATUS_UNKNOWN, 903 VAR_INIT_STATUS_UNINITIALIZED, 904 VAR_INIT_STATUS_INITIALIZED 905 }; 906 907 /* Codes that appear in the NOTE_KIND field for kinds of notes 908 that are not line numbers. These codes are all negative. 909 910 Notice that we do not try to use zero here for any of 911 the special note codes because sometimes the source line 912 actually can be zero! This happens (for example) when we 913 are generating code for the per-translation-unit constructor 914 and destructor routines for some C++ translation unit. */ 915 916 enum insn_note 917 { 918 #define DEF_INSN_NOTE(NAME) NAME, 919 #include "insn-notes.def" 920 #undef DEF_INSN_NOTE 921 922 NOTE_INSN_MAX 923 }; 924 925 /* Names for NOTE insn's other than line numbers. */ 926 927 extern const char * const note_insn_name[NOTE_INSN_MAX]; 928 #define GET_NOTE_INSN_NAME(NOTE_CODE) \ 929 (note_insn_name[(NOTE_CODE)]) 930 931 /* The name of a label, in case it corresponds to an explicit label 932 in the input source code. */ 933 #define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) 934 935 /* In jump.c, each label contains a count of the number 936 of LABEL_REFs that point at it, so unused labels can be deleted. */ 937 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) 938 939 /* Labels carry a two-bit field composed of the ->jump and ->call 940 bits. This field indicates whether the label is an alternate 941 entry point, and if so, what kind. */ 942 enum label_kind 943 { 944 LABEL_NORMAL = 0, /* ordinary label */ 945 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 946 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 947 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 948 }; 949 950 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 951 952 /* Retrieve the kind of LABEL. */ 953 #define LABEL_KIND(LABEL) __extension__ \ 954 ({ __typeof (LABEL) const _label = (LABEL); \ 955 if (GET_CODE (_label) != CODE_LABEL) \ 956 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 957 __FUNCTION__); \ 958 (enum label_kind) ((_label->jump << 1) | _label->call); }) 959 960 /* Set the kind of LABEL. */ 961 #define SET_LABEL_KIND(LABEL, KIND) do { \ 962 __typeof (LABEL) const _label = (LABEL); \ 963 const unsigned int _kind = (KIND); \ 964 if (GET_CODE (_label) != CODE_LABEL) \ 965 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 966 __FUNCTION__); \ 967 _label->jump = ((_kind >> 1) & 1); \ 968 _label->call = (_kind & 1); \ 969 } while (0) 970 971 #else 972 973 /* Retrieve the kind of LABEL. */ 974 #define LABEL_KIND(LABEL) \ 975 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 976 977 /* Set the kind of LABEL. */ 978 #define SET_LABEL_KIND(LABEL, KIND) do { \ 979 rtx const _label = (LABEL); \ 980 const unsigned int _kind = (KIND); \ 981 _label->jump = ((_kind >> 1) & 1); \ 982 _label->call = (_kind & 1); \ 983 } while (0) 984 985 #endif /* rtl flag checking */ 986 987 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 988 989 /* In jump.c, each JUMP_INSN can point to a label that it can jump to, 990 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 991 be decremented and possibly the label can be deleted. */ 992 #define JUMP_LABEL(INSN) XCEXP (INSN, 8, JUMP_INSN) 993 994 /* Once basic blocks are found, each CODE_LABEL starts a chain that 995 goes through all the LABEL_REFs that jump to that label. The chain 996 eventually winds up at the CODE_LABEL: it is circular. */ 997 #define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL) 998 999 /* For a REG rtx, REGNO extracts the register number. REGNO can only 1001 be used on RHS. Use SET_REGNO to change the value. */ 1002 #define REGNO(RTX) (rhs_regno(RTX)) 1003 #define SET_REGNO(RTX,N) (df_ref_change_reg_with_loc (REGNO(RTX), N, RTX), XCUINT (RTX, 0, REG) = N) 1004 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N) 1005 1006 /* ORIGINAL_REGNO holds the number the register originally had; for a 1007 pseudo register turned into a hard reg this will hold the old pseudo 1008 register number. */ 1009 #define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) 1010 1011 /* Force the REGNO macro to only be used on the lhs. */ 1012 static inline unsigned int 1013 rhs_regno (const_rtx x) 1014 { 1015 return XCUINT (x, 0, REG); 1016 } 1017 1018 1019 1020 /* 1 if RTX is a reg or parallel that is the current function's return 1021 value. */ 1022 #define REG_FUNCTION_VALUE_P(RTX) \ 1023 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 1024 1025 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 1026 #define REG_USERVAR_P(RTX) \ 1027 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) 1028 1029 /* 1 if RTX is a reg that holds a pointer value. */ 1030 #define REG_POINTER(RTX) \ 1031 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) 1032 1033 /* 1 if RTX is a mem that holds a pointer value. */ 1034 #define MEM_POINTER(RTX) \ 1035 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) 1036 1037 /* 1 if the given register REG corresponds to a hard register. */ 1038 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1039 1040 /* 1 if the given register number REG_NO corresponds to a hard register. */ 1041 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1042 1043 /* For a CONST_INT rtx, INTVAL extracts the integer. */ 1044 #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) 1045 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1046 1047 /* For a CONST_DOUBLE: 1048 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1049 low-order word and ..._HIGH the high-order. 1050 For a float, there is a REAL_VALUE_TYPE structure, and 1051 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1052 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1053 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1054 #define CONST_DOUBLE_REAL_VALUE(r) \ 1055 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1056 1057 #define CONST_FIXED_VALUE(r) \ 1058 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode)) 1059 #define CONST_FIXED_VALUE_HIGH(r) \ 1060 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.high)) 1061 #define CONST_FIXED_VALUE_LOW(r) \ 1062 ((HOST_WIDE_INT) (CONST_FIXED_VALUE(r)->data.low)) 1063 1064 /* For a CONST_VECTOR, return element #n. */ 1065 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1066 1067 /* For a CONST_VECTOR, return the number of elements in a vector. */ 1068 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1069 1070 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1071 SUBREG_BYTE extracts the byte-number. */ 1072 1073 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1074 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1075 1076 /* in rtlanal.c */ 1077 /* Return the right cost to give to an operation 1078 to make the cost of the corresponding register-to-register instruction 1079 N times that of a fast register-to-register instruction. */ 1080 #define COSTS_N_INSNS(N) ((N) * 4) 1081 1082 /* Maximum cost of an rtl expression. This value has the special meaning 1083 not to use an rtx with this cost under any circumstances. */ 1084 #define MAX_COST INT_MAX 1085 1086 extern void init_rtlanal (void); 1087 extern int rtx_cost (rtx, enum rtx_code, bool); 1088 extern int address_cost (rtx, enum machine_mode, bool); 1089 extern unsigned int subreg_lsb (const_rtx); 1090 extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, 1091 unsigned int); 1092 extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, 1093 unsigned int, enum machine_mode); 1094 extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, 1095 unsigned int, enum machine_mode); 1096 extern unsigned int subreg_regno (const_rtx); 1097 extern int simplify_subreg_regno (unsigned int, enum machine_mode, 1098 unsigned int, enum machine_mode); 1099 extern unsigned int subreg_nregs (const_rtx); 1100 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx); 1101 extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, enum machine_mode); 1102 extern unsigned int num_sign_bit_copies (const_rtx, enum machine_mode); 1103 extern bool constant_pool_constant_p (rtx); 1104 extern bool truncated_to_mode (enum machine_mode, const_rtx); 1105 1106 1107 /* 1 if RTX is a subreg containing a reg that is already known to be 1108 sign- or zero-extended from the mode of the subreg to the mode of 1109 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 1110 extension. 1111 1112 When used as a LHS, is means that this extension must be done 1113 when assigning to SUBREG_REG. */ 1114 1115 #define SUBREG_PROMOTED_VAR_P(RTX) \ 1116 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 1117 1118 #define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ 1119 do { \ 1120 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ 1121 if ((VAL) < 0) \ 1122 _rtx->volatil = 1; \ 1123 else { \ 1124 _rtx->volatil = 0; \ 1125 _rtx->unchanging = (VAL); \ 1126 } \ 1127 } while (0) 1128 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 1129 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ 1130 ? -1 : (RTX)->unchanging) 1131 1132 /* Access various components of an ASM_OPERANDS rtx. */ 1133 1134 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 1135 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 1136 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 1137 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 1138 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 1139 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 1140 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 1141 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 1142 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 1143 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 1144 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 1145 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 1146 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 1147 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS) 1148 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT) 1149 1150 /* 1 if RTX is a mem that is statically allocated in read-only memory. */ 1151 #define MEM_READONLY_P(RTX) \ 1152 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging) 1153 1154 /* 1 if RTX is a mem and we should keep the alias set for this mem 1155 unchanged when we access a component. Set to 1, or example, when we 1156 are already in a non-addressable component of an aggregate. */ 1157 #define MEM_KEEP_ALIAS_SET_P(RTX) \ 1158 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 1159 1160 /* 1 if RTX is a mem or asm_operand for a volatile reference. */ 1161 #define MEM_VOLATILE_P(RTX) \ 1162 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 1163 ASM_INPUT)->volatil) 1164 1165 /* 1 if RTX is a mem that refers to an aggregate, either to the 1166 aggregate itself or to a field of the aggregate. If zero, RTX may 1167 or may not be such a reference. */ 1168 #define MEM_IN_STRUCT_P(RTX) \ 1169 (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct) 1170 1171 /* 1 if RTX is a MEM that refers to a scalar. If zero, RTX may or may 1172 not refer to a scalar. */ 1173 #define MEM_SCALAR_P(RTX) \ 1174 (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val) 1175 1176 /* 1 if RTX is a mem that cannot trap. */ 1177 #define MEM_NOTRAP_P(RTX) \ 1178 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) 1179 1180 /* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in 1181 RTX. Otherwise, vice versa. Use this macro only when you are 1182 *sure* that you know that the MEM is in a structure, or is a 1183 scalar. VAL is evaluated only once. */ 1184 #define MEM_SET_IN_STRUCT_P(RTX, VAL) \ 1185 do { \ 1186 if (VAL) \ 1187 { \ 1188 MEM_IN_STRUCT_P (RTX) = 1; \ 1189 MEM_SCALAR_P (RTX) = 0; \ 1190 } \ 1191 else \ 1192 { \ 1193 MEM_IN_STRUCT_P (RTX) = 0; \ 1194 MEM_SCALAR_P (RTX) = 1; \ 1195 } \ 1196 } while (0) 1197 1198 /* The memory attribute block. We provide access macros for each value 1199 in the block and provide defaults if none specified. */ 1200 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 1201 1202 /* The register attribute block. We provide access macros for each value 1203 in the block and provide defaults if none specified. */ 1204 #define REG_ATTRS(RTX) X0REGATTR (RTX, 2) 1205 1206 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 1207 set, and may alias anything. Otherwise, the MEM can only alias 1208 MEMs in a conflicting alias set. This value is set in a 1209 language-dependent manner in the front-end, and should not be 1210 altered in the back-end. These set numbers are tested with 1211 alias_sets_conflict_p. */ 1212 #define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias) 1213 1214 /* For a MEM rtx, the decl it is known to refer to, if it is known to 1215 refer to part of a DECL. It may also be a COMPONENT_REF. */ 1216 #define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr) 1217 1218 /* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a 1219 RTX that is always a CONST_INT. */ 1220 #define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset) 1221 1222 /* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that 1223 is always a CONST_INT. */ 1224 #define MEM_SIZE(RTX) \ 1225 (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ 1226 : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ 1227 : 0) 1228 1229 /* For a MEM rtx, the alignment in bits. We can use the alignment of the 1230 mode as a default when STRICT_ALIGNMENT, but not if not. */ 1231 #define MEM_ALIGN(RTX) \ 1232 (MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \ 1233 : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \ 1234 ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT)) 1235 1236 /* For a REG rtx, the decl it is known to refer to, if it is known to 1237 refer to part of a DECL. */ 1238 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 1239 1240 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 1241 HOST_WIDE_INT. */ 1242 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 1243 1244 /* Copy the attributes that apply to memory locations from RHS to LHS. */ 1245 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 1246 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 1247 MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ 1248 MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ 1249 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 1250 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 1251 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 1252 MEM_POINTER (LHS) = MEM_POINTER (RHS), \ 1253 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 1254 1255 /* 1 if RTX is a label_ref for a nonlocal label. */ 1256 /* Likewise in an expr_list for a REG_LABEL_OPERAND or 1257 REG_LABEL_TARGET note. */ 1258 #define LABEL_REF_NONLOCAL_P(RTX) \ 1259 (RTL_FLAG_CHECK1("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil) 1260 1261 /* 1 if RTX is a code_label that should always be considered to be needed. */ 1262 #define LABEL_PRESERVE_P(RTX) \ 1263 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 1264 1265 /* During sched, 1 if RTX is an insn that must be scheduled together 1266 with the preceding insn. */ 1267 #define SCHED_GROUP_P(RTX) \ 1268 (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \ 1269 )->in_struct) 1270 1271 /* For a SET rtx, SET_DEST is the place that is set 1272 and SET_SRC is the value it is set to. */ 1273 #define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) 1274 #define SET_SRC(RTX) XCEXP(RTX, 1, SET) 1275 #define SET_IS_RETURN_P(RTX) \ 1276 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) 1277 1278 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 1279 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 1280 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 1281 1282 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 1283 conditionally executing the code on, COND_EXEC_CODE is the code 1284 to execute if the condition is true. */ 1285 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 1286 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 1287 1288 /* 1 if RTX is a symbol_ref that addresses this function's rtl 1289 constants pool. */ 1290 #define CONSTANT_POOL_ADDRESS_P(RTX) \ 1291 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 1292 1293 /* 1 if RTX is a symbol_ref that addresses a value in the file's 1294 tree constant pool. This information is private to varasm.c. */ 1295 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 1296 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ 1297 (RTX), SYMBOL_REF)->frame_related) 1298 1299 /* Used if RTX is a symbol_ref, for machine-specific purposes. */ 1300 #define SYMBOL_REF_FLAG(RTX) \ 1301 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 1302 1303 /* 1 if RTX is a symbol_ref that has been the library function in 1304 emit_library_call. */ 1305 #define SYMBOL_REF_USED(RTX) \ 1306 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 1307 1308 /* 1 if RTX is a symbol_ref for a weak symbol. */ 1309 #define SYMBOL_REF_WEAK(RTX) \ 1310 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 1311 1312 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 1313 SYMBOL_REF_CONSTANT. */ 1314 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2) 1315 1316 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 1317 pool symbol. */ 1318 #define SET_SYMBOL_REF_DECL(RTX, DECL) \ 1319 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL)) 1320 1321 /* The tree (decl or constant) associated with the symbol, or null. */ 1322 #define SYMBOL_REF_DECL(RTX) \ 1323 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2)) 1324 1325 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 1326 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 1327 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C)) 1328 1329 /* The rtx constant pool entry for a symbol, or null. */ 1330 #define SYMBOL_REF_CONSTANT(RTX) \ 1331 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL) 1332 1333 /* A set of flags on a symbol_ref that are, in some respects, redundant with 1334 information derivable from the tree decl associated with this symbol. 1335 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 1336 decl. In some cases this is a bug. But beyond that, it's nice to cache 1337 this information to avoid recomputing it. Finally, this allows space for 1338 the target to store more than one bit of information, as with 1339 SYMBOL_REF_FLAG. */ 1340 #define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) 1341 1342 /* These flags are common enough to be defined for all targets. They 1343 are computed by the default version of targetm.encode_section_info. */ 1344 1345 /* Set if this symbol is a function. */ 1346 #define SYMBOL_FLAG_FUNCTION (1 << 0) 1347 #define SYMBOL_REF_FUNCTION_P(RTX) \ 1348 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 1349 /* Set if targetm.binds_local_p is true. */ 1350 #define SYMBOL_FLAG_LOCAL (1 << 1) 1351 #define SYMBOL_REF_LOCAL_P(RTX) \ 1352 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 1353 /* Set if targetm.in_small_data_p is true. */ 1354 #define SYMBOL_FLAG_SMALL (1 << 2) 1355 #define SYMBOL_REF_SMALL_P(RTX) \ 1356 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 1357 /* The three-bit field at [5:3] is true for TLS variables; use 1358 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 1359 #define SYMBOL_FLAG_TLS_SHIFT 3 1360 #define SYMBOL_REF_TLS_MODEL(RTX) \ 1361 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 1362 /* Set if this symbol is not defined in this translation unit. */ 1363 #define SYMBOL_FLAG_EXTERNAL (1 << 6) 1364 #define SYMBOL_REF_EXTERNAL_P(RTX) \ 1365 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 1366 /* Set if this symbol has a block_symbol structure associated with it. */ 1367 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 1368 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 1369 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 1370 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 1371 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 1372 #define SYMBOL_FLAG_ANCHOR (1 << 8) 1373 #define SYMBOL_REF_ANCHOR_P(RTX) \ 1374 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 1375 1376 /* Subsequent bits are available for the target to use. */ 1377 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9 1378 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 1379 1380 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 1381 structure to which the symbol belongs, or NULL if it has not been 1382 assigned a block. */ 1383 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 1384 1385 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 1386 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 1387 RTX has not yet been assigned to a block, or it has not been given an 1388 offset within that block. */ 1389 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 1390 1391 /* Indicate whether the machine has any sort of auto increment addressing. 1392 If not, we can avoid checking for REG_INC notes. */ 1393 1394 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \ 1395 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \ 1396 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_DISP) \ 1397 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG)) 1398 #define AUTO_INC_DEC 1399 #endif 1400 1401 /* Define a macro to look for REG_INC notes, 1402 but save time on machines where they never exist. */ 1403 1404 #ifdef AUTO_INC_DEC 1405 #define FIND_REG_INC_NOTE(INSN, REG) \ 1406 ((REG) != NULL_RTX && REG_P ((REG)) \ 1407 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 1408 : find_reg_note ((INSN), REG_INC, (REG))) 1409 #else 1410 #define FIND_REG_INC_NOTE(INSN, REG) 0 1411 #endif 1412 1413 #ifndef HAVE_PRE_INCREMENT 1414 #define HAVE_PRE_INCREMENT 0 1415 #endif 1416 1417 #ifndef HAVE_PRE_DECREMENT 1418 #define HAVE_PRE_DECREMENT 0 1419 #endif 1420 1421 #ifndef HAVE_POST_INCREMENT 1422 #define HAVE_POST_INCREMENT 0 1423 #endif 1424 1425 #ifndef HAVE_POST_DECREMENT 1426 #define HAVE_POST_DECREMENT 0 1427 #endif 1428 1429 #ifndef HAVE_POST_MODIFY_DISP 1430 #define HAVE_POST_MODIFY_DISP 0 1431 #endif 1432 1433 #ifndef HAVE_POST_MODIFY_REG 1434 #define HAVE_POST_MODIFY_REG 0 1435 #endif 1436 1437 #ifndef HAVE_PRE_MODIFY_DISP 1438 #define HAVE_PRE_MODIFY_DISP 0 1439 #endif 1440 1441 #ifndef HAVE_PRE_MODIFY_REG 1442 #define HAVE_PRE_MODIFY_REG 0 1443 #endif 1444 1445 1446 /* Some architectures do not have complete pre/post increment/decrement 1447 instruction sets, or only move some modes efficiently. These macros 1448 allow us to tune autoincrement generation. */ 1449 1450 #ifndef USE_LOAD_POST_INCREMENT 1451 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1452 #endif 1453 1454 #ifndef USE_LOAD_POST_DECREMENT 1455 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1456 #endif 1457 1458 #ifndef USE_LOAD_PRE_INCREMENT 1459 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1460 #endif 1461 1462 #ifndef USE_LOAD_PRE_DECREMENT 1463 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1464 #endif 1465 1466 #ifndef USE_STORE_POST_INCREMENT 1467 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1468 #endif 1469 1470 #ifndef USE_STORE_POST_DECREMENT 1471 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1472 #endif 1473 1474 #ifndef USE_STORE_PRE_INCREMENT 1475 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1476 #endif 1477 1478 #ifndef USE_STORE_PRE_DECREMENT 1479 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1480 #endif 1481 1482 /* Nonzero when we are generating CONCATs. */ 1484 extern int generating_concat_p; 1485 1486 /* Nonzero when we are expanding trees to RTL. */ 1487 extern int currently_expanding_to_rtl; 1488 1489 /* Generally useful functions. */ 1490 1491 /* In expmed.c */ 1492 extern int ceil_log2 (unsigned HOST_WIDE_INT); 1493 1494 /* In explow.c */ 1495 extern void set_stack_check_libfunc (rtx); 1496 extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); 1497 extern rtx plus_constant (rtx, HOST_WIDE_INT); 1498 1499 /* In emit-rtl.c */ 1500 extern rtx gen_blockage (void); 1501 extern rtvec gen_rtvec (int, ...); 1502 extern rtx copy_insn_1 (rtx); 1503 extern rtx copy_insn (rtx); 1504 extern rtx gen_int_mode (HOST_WIDE_INT, enum machine_mode); 1505 extern rtx emit_copy_of_insn_after (rtx, rtx); 1506 extern void set_reg_attrs_from_value (rtx, rtx); 1507 extern void set_mem_attrs_from_reg (rtx, rtx); 1508 extern void set_reg_attrs_for_parm (rtx, rtx); 1509 extern void adjust_reg_mode (rtx, enum machine_mode); 1510 extern int mem_expr_equal_p (const_tree, const_tree); 1511 1512 /* In rtl.c */ 1513 extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 1514 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 1515 1516 extern rtvec rtvec_alloc (int); 1517 extern bool shared_const_p (const_rtx); 1518 extern rtx copy_rtx (rtx); 1519 extern void dump_rtx_statistics (void); 1520 1521 /* In emit-rtl.c */ 1522 extern rtx copy_rtx_if_shared (rtx); 1523 1524 /* In rtl.c */ 1525 extern unsigned int rtx_size (const_rtx); 1526 extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL); 1527 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 1528 extern int rtx_equal_p (const_rtx, const_rtx); 1529 1530 /* In emit-rtl.c */ 1531 extern rtvec gen_rtvec_v (int, rtx *); 1532 extern rtx gen_reg_rtx (enum machine_mode); 1533 extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); 1534 extern rtx gen_reg_rtx_offset (rtx, enum machine_mode, int); 1535 extern rtx gen_reg_rtx_and_attrs (rtx); 1536 extern rtx gen_label_rtx (void); 1537 extern rtx gen_lowpart_common (enum machine_mode, rtx); 1538 1539 /* In cse.c */ 1540 extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); 1541 1542 /* In emit-rtl.c */ 1543 extern rtx gen_highpart (enum machine_mode, rtx); 1544 extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); 1545 extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); 1546 1547 /* In emit-rtl.c */ 1548 extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); 1549 extern int subreg_lowpart_p (const_rtx); 1550 extern unsigned int subreg_lowpart_offset (enum machine_mode, 1551 enum machine_mode); 1552 extern unsigned int subreg_highpart_offset (enum machine_mode, 1553 enum machine_mode); 1554 extern int byte_lowpart_offset (enum machine_mode, enum machine_mode); 1555 extern rtx make_safe_from (rtx, rtx); 1556 extern rtx convert_memory_address (enum machine_mode, rtx); 1557 extern rtx get_insns (void); 1558 extern const char *get_insn_name (int); 1559 extern rtx get_last_insn (void); 1560 extern rtx get_last_insn_anywhere (void); 1561 extern rtx get_first_nonnote_insn (void); 1562 extern rtx get_last_nonnote_insn (void); 1563 extern void start_sequence (void); 1564 extern void push_to_sequence (rtx); 1565 extern void push_to_sequence2 (rtx, rtx); 1566 extern void end_sequence (void); 1567 extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 1568 enum machine_mode); 1569 1570 /* In loop-iv.c */ 1571 1572 extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode); 1573 1574 /* In varasm.c */ 1575 extern rtx force_const_mem (enum machine_mode, rtx); 1576 1577 /* In varasm.c */ 1578 1579 struct function; 1580 extern rtx get_pool_constant (rtx); 1581 extern rtx get_pool_constant_mark (rtx, bool *); 1582 extern enum machine_mode get_pool_mode (const_rtx); 1583 extern rtx simplify_subtraction (rtx); 1584 1585 /* In function.c */ 1586 extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); 1587 extern rtx assign_stack_local_1 (enum machine_mode, HOST_WIDE_INT, int, bool); 1588 extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int); 1589 extern rtx assign_stack_temp_for_type (enum machine_mode, 1590 HOST_WIDE_INT, int, tree); 1591 extern rtx assign_temp (tree, int, int, int); 1592 1593 /* In emit-rtl.c */ 1594 extern rtx emit_insn_before (rtx, rtx); 1595 extern rtx emit_insn_before_noloc (rtx, rtx, struct basic_block_def *); 1596 extern rtx emit_insn_before_setloc (rtx, rtx, int); 1597 extern rtx emit_jump_insn_before (rtx, rtx); 1598 extern rtx emit_jump_insn_before_noloc (rtx, rtx); 1599 extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); 1600 extern rtx emit_call_insn_before (rtx, rtx); 1601 extern rtx emit_call_insn_before_noloc (rtx, rtx); 1602 extern rtx emit_call_insn_before_setloc (rtx, rtx, int); 1603 extern rtx emit_barrier_before (rtx); 1604 extern rtx emit_label_before (rtx, rtx); 1605 extern rtx emit_note_before (enum insn_note, rtx); 1606 extern rtx emit_insn_after (rtx, rtx); 1607 extern rtx emit_insn_after_noloc (rtx, rtx, struct basic_block_def *); 1608 extern rtx emit_insn_after_setloc (rtx, rtx, int); 1609 extern rtx emit_jump_insn_after (rtx, rtx); 1610 extern rtx emit_jump_insn_after_noloc (rtx, rtx); 1611 extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); 1612 extern rtx emit_call_insn_after (rtx, rtx); 1613 extern rtx emit_call_insn_after_noloc (rtx, rtx); 1614 extern rtx emit_call_insn_after_setloc (rtx, rtx, int); 1615 extern rtx emit_barrier_after (rtx); 1616 extern rtx emit_label_after (rtx, rtx); 1617 extern rtx emit_note_after (enum insn_note, rtx); 1618 extern rtx emit_insn (rtx); 1619 extern rtx emit_jump_insn (rtx); 1620 extern rtx emit_call_insn (rtx); 1621 extern rtx emit_label (rtx); 1622 extern rtx emit_barrier (void); 1623 extern rtx emit_note (enum insn_note); 1624 extern rtx emit_note_copy (rtx); 1625 extern rtx gen_clobber (rtx); 1626 extern rtx emit_clobber (rtx); 1627 extern rtx gen_use (rtx); 1628 extern rtx emit_use (rtx); 1629 extern rtx make_insn_raw (rtx); 1630 extern rtx make_jump_insn_raw (rtx); 1631 extern void add_function_usage_to (rtx, rtx); 1632 extern rtx last_call_insn (void); 1633 extern rtx previous_insn (rtx); 1634 extern rtx next_insn (rtx); 1635 extern rtx prev_nonnote_insn (rtx); 1636 extern rtx next_nonnote_insn (rtx); 1637 extern rtx prev_real_insn (rtx); 1638 extern rtx next_real_insn (rtx); 1639 extern rtx prev_active_insn (rtx); 1640 extern rtx next_active_insn (rtx); 1641 extern int active_insn_p (const_rtx); 1642 extern rtx prev_label (rtx); 1643 extern rtx next_label (rtx); 1644 extern rtx skip_consecutive_labels (rtx); 1645 extern rtx next_cc0_user (rtx); 1646 extern rtx prev_cc0_setter (rtx); 1647 1648 /* In cfglayout.c */ 1649 extern int insn_line (const_rtx); 1650 extern const char * insn_file (const_rtx); 1651 extern int insn_discriminator (const_rtx); 1652 extern location_t locator_location (int); 1653 extern int locator_line (int); 1654 extern const char * locator_file (int); 1655 extern bool locator_eq (int, int); 1656 extern int prologue_locator, epilogue_locator; 1657 1658 /* In jump.c */ 1659 extern enum rtx_code reverse_condition (enum rtx_code); 1660 extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 1661 extern enum rtx_code swap_condition (enum rtx_code); 1662 extern enum rtx_code unsigned_condition (enum rtx_code); 1663 extern enum rtx_code signed_condition (enum rtx_code); 1664 extern void mark_jump_label (rtx, rtx, int); 1665 extern unsigned int cleanup_barriers (void); 1666 1667 /* In jump.c */ 1668 extern rtx delete_related_insns (rtx); 1669 1670 /* In recog.c */ 1671 extern rtx *find_constant_term_loc (rtx *); 1672 1673 /* In emit-rtl.c */ 1674 extern rtx try_split (rtx, rtx, int); 1675 extern int split_branch_probability; 1676 1677 /* In unknown file */ 1678 extern rtx split_insns (rtx, rtx); 1679 1680 /* In simplify-rtx.c */ 1681 extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode, 1682 rtx, enum machine_mode); 1683 extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, 1684 enum machine_mode); 1685 extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode, 1686 rtx, rtx); 1687 extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, 1688 rtx); 1689 extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, 1690 enum machine_mode, rtx, rtx, rtx); 1691 extern rtx simplify_const_relational_operation (enum rtx_code, 1692 enum machine_mode, rtx, rtx); 1693 extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, 1694 enum machine_mode, rtx, rtx); 1695 extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); 1696 extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, 1697 enum machine_mode); 1698 extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, 1699 enum machine_mode, rtx, rtx, rtx); 1700 extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, 1701 enum machine_mode, rtx, rtx); 1702 extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, 1703 unsigned int); 1704 extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, 1705 unsigned int); 1706 extern rtx simplify_replace_rtx (rtx, const_rtx, rtx); 1707 extern rtx simplify_rtx (const_rtx); 1708 extern rtx avoid_constant_pool_reference (rtx); 1709 extern bool mode_signbit_p (enum machine_mode, const_rtx); 1710 1711 /* In reginfo.c */ 1712 extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 1713 bool); 1714 1715 /* In emit-rtl.c */ 1716 extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 1717 extern void set_insn_deleted (rtx); 1718 1719 /* Functions in rtlanal.c */ 1720 1721 /* Single set is implemented as macro for performance reasons. */ 1722 #define single_set(I) (INSN_P (I) \ 1723 ? (GET_CODE (PATTERN (I)) == SET \ 1724 ? PATTERN (I) : single_set_1 (I)) \ 1725 : NULL_RTX) 1726 #define single_set_1(I) single_set_2 (I, PATTERN (I)) 1727 1728 /* Structure used for passing data to REPLACE_LABEL. */ 1729 typedef struct replace_label_data 1730 { 1731 rtx r1; 1732 rtx r2; 1733 bool update_label_nuses; 1734 } replace_label_data; 1735 1736 extern int rtx_addr_can_trap_p (const_rtx); 1737 extern bool nonzero_address_p (const_rtx); 1738 extern int rtx_unstable_p (const_rtx); 1739 extern bool rtx_varies_p (const_rtx, bool); 1740 extern bool rtx_addr_varies_p (const_rtx, bool); 1741 extern HOST_WIDE_INT get_integer_term (const_rtx); 1742 extern rtx get_related_value (const_rtx); 1743 extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT); 1744 extern void split_const (rtx, rtx *, rtx *); 1745 extern int reg_mentioned_p (const_rtx, const_rtx); 1746 extern int count_occurrences (const_rtx, const_rtx, int); 1747 extern int reg_referenced_p (const_rtx, const_rtx); 1748 extern int reg_used_between_p (const_rtx, const_rtx, const_rtx); 1749 extern int reg_set_between_p (const_rtx, const_rtx, const_rtx); 1750 extern int commutative_operand_precedence (rtx); 1751 extern bool swap_commutative_operands_p (rtx, rtx); 1752 extern int modified_between_p (const_rtx, const_rtx, const_rtx); 1753 extern int no_labels_between_p (const_rtx, const_rtx); 1754 extern int modified_in_p (const_rtx, const_rtx); 1755 extern int reg_set_p (const_rtx, const_rtx); 1756 extern rtx single_set_2 (const_rtx, const_rtx); 1757 extern int multiple_sets (const_rtx); 1758 extern int set_noop_p (const_rtx); 1759 extern int noop_move_p (const_rtx); 1760 extern rtx find_last_value (rtx, rtx *, rtx, int); 1761 extern int refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *); 1762 extern int reg_overlap_mentioned_p (const_rtx, const_rtx); 1763 extern const_rtx set_of (const_rtx, const_rtx); 1764 extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *); 1765 extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 1766 extern int dead_or_set_p (const_rtx, const_rtx); 1767 extern int dead_or_set_regno_p (const_rtx, unsigned int); 1768 extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx); 1769 extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int); 1770 extern rtx find_reg_equal_equiv_note (const_rtx); 1771 extern rtx find_constant_src (const_rtx); 1772 extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx); 1773 extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int); 1774 extern rtx alloc_reg_note (enum reg_note, rtx, rtx); 1775 extern void add_reg_note (rtx, enum reg_note, rtx); 1776 extern void remove_note (rtx, const_rtx); 1777 extern void remove_reg_equal_equiv_notes (rtx); 1778 extern int side_effects_p (const_rtx); 1779 extern int volatile_refs_p (const_rtx); 1780 extern int volatile_insn_p (const_rtx); 1781 extern int may_trap_p_1 (const_rtx, unsigned); 1782 extern int may_trap_p (const_rtx); 1783 extern int may_trap_or_fault_p (const_rtx); 1784 extern int inequality_comparisons_p (const_rtx); 1785 extern rtx replace_rtx (rtx, rtx, rtx); 1786 extern int replace_label (rtx *, void *); 1787 extern int rtx_referenced_p (rtx, rtx); 1788 extern bool tablejump_p (const_rtx, rtx *, rtx *); 1789 extern int computed_jump_p (const_rtx); 1790 1791 typedef int (*rtx_function) (rtx *, void *); 1792 extern int for_each_rtx (rtx *, rtx_function, void *); 1793 1794 typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *, 1795 rtx *, rtx *); 1796 extern int rtx_equal_p_cb (const_rtx, const_rtx, 1797 rtx_equal_p_callback_function); 1798 1799 typedef int (*hash_rtx_callback_function) (const_rtx, enum machine_mode, rtx *, 1800 enum machine_mode *); 1801 extern unsigned hash_rtx_cb (const_rtx, enum machine_mode, int *, int *, 1802 bool, hash_rtx_callback_function); 1803 1804 extern rtx regno_use_in (unsigned int, rtx); 1805 extern int auto_inc_p (const_rtx); 1806 extern int in_expr_list_p (const_rtx, const_rtx); 1807 extern void remove_node_from_expr_list (const_rtx, rtx *); 1808 extern int loc_mentioned_in_p (rtx *, const_rtx); 1809 extern rtx find_first_parameter_load (rtx, rtx); 1810 extern bool keep_with_call_p (const_rtx); 1811 extern bool label_is_jump_target_p (const_rtx, const_rtx); 1812 extern int insn_rtx_cost (rtx, bool); 1813 1814 /* Given an insn and condition, return a canonical description of 1815 the test being made. */ 1816 extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int); 1817 1818 /* Given a JUMP_INSN, return a canonical description of the test 1819 being made. */ 1820 extern rtx get_condition (rtx, rtx *, int, int); 1821 1822 /* lists.c */ 1823 1824 extern void free_EXPR_LIST_list (rtx *); 1825 extern void free_INSN_LIST_list (rtx *); 1826 extern void free_EXPR_LIST_node (rtx); 1827 extern void free_INSN_LIST_node (rtx); 1828 extern rtx alloc_INSN_LIST (rtx, rtx); 1829 extern rtx alloc_EXPR_LIST (int, rtx, rtx); 1830 extern void remove_free_INSN_LIST_elem (rtx, rtx *); 1831 extern rtx remove_list_elem (rtx, rtx *); 1832 extern rtx remove_free_INSN_LIST_node (rtx *); 1833 extern rtx remove_free_EXPR_LIST_node (rtx *); 1834 1835 1836 /* reginfo.c */ 1837 1838 /* Initialize may_move_cost and friends for mode M. */ 1839 extern void init_move_cost (enum machine_mode); 1840 /* Allocate register info memory. */ 1841 extern void allocate_reg_info (void); 1842 /* Resize reg info. */ 1843 extern void resize_reg_info (void); 1844 /* Free up register info memory. */ 1845 extern void free_reg_info (void); 1846 1847 /* recog.c */ 1848 extern int asm_noperands (const_rtx); 1849 extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 1850 enum machine_mode *, location_t *); 1851 1852 extern enum reg_class reg_preferred_class (int); 1853 extern enum reg_class reg_alternate_class (int); 1854 extern void setup_reg_classes (int, enum reg_class, enum reg_class); 1855 1856 extern void split_all_insns (void); 1857 extern unsigned int split_all_insns_noflow (void); 1858 1859 #define MAX_SAVED_CONST_INT 64 1860 extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 1861 1862 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 1863 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 1864 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 1865 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 1866 extern GTY(()) rtx const_true_rtx; 1867 1868 extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; 1869 1870 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 1871 same as VOIDmode. */ 1872 1873 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 1874 1875 /* Likewise, for the constants 1 and 2. */ 1876 1877 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 1878 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 1879 1880 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 1881 is used to represent the frame pointer. This is because the 1882 hard frame pointer and the automatic variables are separated by an amount 1883 that cannot be determined until after register allocation. We can assume 1884 that in this case ELIMINABLE_REGS will be defined, one action of which 1885 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 1886 #ifndef HARD_FRAME_POINTER_REGNUM 1887 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 1888 #endif 1889 1890 /* Index labels for global_rtl. */ 1891 enum global_rtl_index 1892 { 1893 GR_PC, 1894 GR_CC0, 1895 GR_STACK_POINTER, 1896 GR_FRAME_POINTER, 1897 /* For register elimination to work properly these hard_frame_pointer_rtx, 1898 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 1899 the same register. */ 1900 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1901 GR_ARG_POINTER = GR_FRAME_POINTER, 1902 #endif 1903 #if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM 1904 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 1905 #else 1906 GR_HARD_FRAME_POINTER, 1907 #endif 1908 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 1909 #if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1910 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 1911 #else 1912 GR_ARG_POINTER, 1913 #endif 1914 #endif 1915 GR_VIRTUAL_INCOMING_ARGS, 1916 GR_VIRTUAL_STACK_ARGS, 1917 GR_VIRTUAL_STACK_DYNAMIC, 1918 GR_VIRTUAL_OUTGOING_ARGS, 1919 GR_VIRTUAL_CFA, 1920 1921 GR_MAX 1922 }; 1923 1924 /* Pointers to standard pieces of rtx are stored here. */ 1925 extern GTY(()) rtx global_rtl[GR_MAX]; 1926 1927 /* Standard pieces of rtx, to be substituted directly into things. */ 1928 #define pc_rtx (global_rtl[GR_PC]) 1929 #define cc0_rtx (global_rtl[GR_CC0]) 1930 1931 /* All references to certain hard regs, except those created 1932 by allocating pseudo regs into them (when that's possible), 1933 go through these unique rtx objects. */ 1934 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 1935 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 1936 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 1937 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 1938 1939 extern GTY(()) rtx pic_offset_table_rtx; 1940 extern GTY(()) rtx static_chain_rtx; 1941 extern GTY(()) rtx static_chain_incoming_rtx; 1942 extern GTY(()) rtx return_address_pointer_rtx; 1943 1944 /* Include the RTL generation functions. */ 1945 1946 #ifndef GENERATOR_FILE 1947 #include "genrtl.h" 1948 #undef gen_rtx_ASM_INPUT 1949 #define gen_rtx_ASM_INPUT(MODE, ARG0) \ 1950 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0) 1951 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \ 1952 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC)) 1953 #endif 1954 1955 /* There are some RTL codes that require special attention; the 1956 generation functions included above do the raw handling. If you 1957 add to this list, modify special_rtx in gengenrtl.c as well. */ 1958 1959 extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); 1960 extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); 1961 extern rtx gen_raw_REG (enum machine_mode, int); 1962 extern rtx gen_rtx_REG (enum machine_mode, unsigned); 1963 extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); 1964 extern rtx gen_rtx_MEM (enum machine_mode, rtx); 1965 1966 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 1967 1968 /* Virtual registers are used during RTL generation to refer to locations into 1969 the stack frame when the actual location isn't known until RTL generation 1970 is complete. The routine instantiate_virtual_regs replaces these with 1971 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 1972 a constant. */ 1973 1974 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 1975 1976 /* This points to the first word of the incoming arguments passed on the stack, 1977 either by the caller or by the callee when pretending it was passed by the 1978 caller. */ 1979 1980 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 1981 1982 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 1983 1984 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 1985 variable on the stack. Otherwise, it points to the first variable on 1986 the stack. */ 1987 1988 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 1989 1990 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 1991 1992 /* This points to the location of dynamically-allocated memory on the stack 1993 immediately after the stack pointer has been adjusted by the amount 1994 desired. */ 1995 1996 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 1997 1998 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 1999 2000 /* This points to the location in the stack at which outgoing arguments should 2001 be written when the stack is pre-pushed (arguments pushed using push 2002 insns always use sp). */ 2003 2004 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 2005 2006 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 2007 2008 /* This points to the Canonical Frame Address of the function. This 2009 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 2010 but is calculated relative to the arg pointer for simplicity; the 2011 frame pointer nor stack pointer are necessarily fixed relative to 2012 the CFA until after reload. */ 2013 2014 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 2015 2016 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 2017 2018 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 2019 2020 /* Nonzero if REGNUM is a pointer into the stack frame. */ 2021 #define REGNO_PTR_FRAME_P(REGNUM) \ 2022 ((REGNUM) == STACK_POINTER_REGNUM \ 2023 || (REGNUM) == FRAME_POINTER_REGNUM \ 2024 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 2025 || (REGNUM) == ARG_POINTER_REGNUM \ 2026 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 2027 && (REGNUM) <= LAST_VIRTUAL_REGISTER)) 2028 2029 /* REGNUM never really appearing in the INSN stream. */ 2030 #define INVALID_REGNUM (~(unsigned int) 0) 2031 2032 extern rtx output_constant_def (tree, int); 2033 extern rtx lookup_constant_def (tree); 2034 2035 /* Nonzero after end of reload pass. 2036 Set to 1 or 0 by reload1.c. */ 2037 2038 extern int reload_completed; 2039 2040 /* Nonzero after thread_prologue_and_epilogue_insns has run. */ 2041 extern int epilogue_completed; 2042 2043 /* Set to 1 while reload_as_needed is operating. 2044 Required by some machines to handle any generated moves differently. */ 2045 2046 extern int reload_in_progress; 2047 2048 /* This macro indicates whether you may create a new 2049 pseudo-register. */ 2050 2051 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed) 2052 2053 #ifdef STACK_REGS 2054 /* Nonzero after end of regstack pass. 2055 Set to 1 or 0 by reg-stack.c. */ 2056 extern int regstack_completed; 2057 #endif 2058 2059 /* If this is nonzero, we do not bother generating VOLATILE 2060 around volatile memory references, and we are willing to 2061 output indirect addresses. If cse is to follow, we reject 2062 indirect addresses so a useful potential cse is generated; 2063 if it is used only once, instruction combination will produce 2064 the same indirect address eventually. */ 2065 extern int cse_not_expected; 2066 2067 /* Translates rtx code to tree code, for those codes needed by 2068 REAL_ARITHMETIC. The function returns an int because the caller may not 2069 know what `enum tree_code' means. */ 2070 2071 extern int rtx_to_tree_code (enum rtx_code); 2072 2073 /* In cse.c */ 2074 extern int delete_trivially_dead_insns (rtx, int); 2075 extern int cse_main (rtx, int); 2076 extern int exp_equiv_p (const_rtx, const_rtx, int, bool); 2077 extern unsigned hash_rtx (const_rtx x, enum machine_mode, int *, int *, bool); 2078 2079 /* In jump.c */ 2080 extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 2081 extern int condjump_p (const_rtx); 2082 extern int any_condjump_p (const_rtx); 2083 extern int any_uncondjump_p (const_rtx); 2084 extern rtx pc_set (const_rtx); 2085 extern rtx condjump_label (const_rtx); 2086 extern int simplejump_p (const_rtx); 2087 extern int returnjump_p (rtx); 2088 extern int eh_returnjump_p (rtx); 2089 extern int onlyjump_p (const_rtx); 2090 extern int only_sets_cc0_p (const_rtx); 2091 extern int sets_cc0_p (const_rtx); 2092 extern int invert_jump_1 (rtx, rtx); 2093 extern int invert_jump (rtx, rtx, int); 2094 extern int rtx_renumbered_equal_p (const_rtx, const_rtx); 2095 extern int true_regnum (const_rtx); 2096 extern unsigned int reg_or_subregno (const_rtx); 2097 extern int redirect_jump_1 (rtx, rtx); 2098 extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 2099 extern int redirect_jump (rtx, rtx, int); 2100 extern void rebuild_jump_labels (rtx); 2101 extern rtx reversed_comparison (const_rtx, enum machine_mode); 2102 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx); 2103 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx, 2104 const_rtx, const_rtx); 2105 extern void delete_for_peephole (rtx, rtx); 2106 extern int condjump_in_parallel_p (const_rtx); 2107 2108 /* In emit-rtl.c. */ 2109 extern int max_reg_num (void); 2110 extern int max_label_num (void); 2111 extern int get_first_label_num (void); 2112 extern void maybe_set_first_label_num (rtx); 2113 extern void delete_insns_since (rtx); 2114 extern void mark_reg_pointer (rtx, int); 2115 extern void mark_user_reg (rtx); 2116 extern void reset_used_flags (rtx); 2117 extern void set_used_flags (rtx); 2118 extern void reorder_insns (rtx, rtx, rtx); 2119 extern void reorder_insns_nobb (rtx, rtx, rtx); 2120 extern int get_max_uid (void); 2121 extern int in_sequence_p (void); 2122 extern void force_next_line_note (void); 2123 extern void init_emit (void); 2124 extern void init_emit_regs (void); 2125 extern void init_emit_once (int); 2126 extern void push_topmost_sequence (void); 2127 extern void pop_topmost_sequence (void); 2128 extern void set_new_first_and_last_insn (rtx, rtx); 2129 extern unsigned int unshare_all_rtl (void); 2130 extern void unshare_all_rtl_again (rtx); 2131 extern void unshare_all_rtl_in_chain (rtx); 2132 extern void verify_rtl_sharing (void); 2133 extern void set_first_insn (rtx); 2134 extern void set_last_insn (rtx); 2135 extern void link_cc0_insns (rtx); 2136 extern void add_insn (rtx); 2137 extern void add_insn_before (rtx, rtx, struct basic_block_def *); 2138 extern void add_insn_after (rtx, rtx, struct basic_block_def *); 2139 extern void remove_insn (rtx); 2140 extern rtx emit (rtx); 2141 extern rtx delete_insn (rtx); 2142 extern rtx entry_of_function (void); 2143 extern void emit_insn_at_entry (rtx); 2144 extern void delete_insn_chain (rtx, rtx, bool); 2145 extern rtx unlink_insn_chain (rtx, rtx); 2146 extern rtx delete_insn_and_edges (rtx); 2147 extern void delete_insn_chain_and_edges (rtx, rtx); 2148 extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); 2149 extern rtx gen_const_mem (enum machine_mode, rtx); 2150 extern rtx gen_frame_mem (enum machine_mode, rtx); 2151 extern rtx gen_tmp_stack_mem (enum machine_mode, rtx); 2152 extern bool validate_subreg (enum machine_mode, enum machine_mode, 2153 const_rtx, unsigned int); 2154 2155 /* In combine.c */ 2156 extern unsigned int extended_count (const_rtx, enum machine_mode, int); 2157 extern rtx remove_death (unsigned int, rtx); 2158 extern void dump_combine_stats (FILE *); 2159 extern void dump_combine_total_stats (FILE *); 2160 2161 /* In cfgcleanup.c */ 2162 extern void delete_dead_jumptables (void); 2163 2164 /* In sched-vis.c. */ 2165 extern void debug_bb_n_slim (int); 2166 extern void debug_bb_slim (struct basic_block_def *); 2167 extern void print_rtl_slim (FILE *, rtx, rtx, int, int); 2168 extern void print_rtl_slim_with_bb (FILE *, rtx, int); 2169 extern void dump_insn_slim (FILE *f, rtx x); 2170 extern void debug_insn_slim (rtx x); 2171 2172 /* In sched-rgn.c. */ 2173 extern void schedule_insns (void); 2174 2175 /* In sched-ebb.c. */ 2176 extern void schedule_ebbs (void); 2177 2178 /* In haifa-sched.c. */ 2179 extern void fix_sched_param (const char *, const char *); 2180 2181 /* In sel-sched-dump.c. */ 2182 extern void sel_sched_fix_param (const char *param, const char *val); 2183 2184 /* In print-rtl.c */ 2185 extern const char *print_rtx_head; 2186 extern void debug_rtx (const_rtx); 2187 extern void debug_rtx_list (const_rtx, int); 2188 extern void debug_rtx_range (const_rtx, const_rtx); 2189 extern const_rtx debug_rtx_find (const_rtx, int); 2190 extern void print_mem_expr (FILE *, const_tree); 2191 extern void print_rtl (FILE *, const_rtx); 2192 extern void print_simple_rtl (FILE *, const_rtx); 2193 extern int print_rtl_single (FILE *, const_rtx); 2194 extern void print_inline_rtx (FILE *, const_rtx, int); 2195 2196 /* In function.c */ 2197 extern void reposition_prologue_and_epilogue_notes (void); 2198 extern int prologue_epilogue_contains (const_rtx); 2199 extern int sibcall_epilogue_contains (const_rtx); 2200 extern void mark_temp_addr_taken (rtx); 2201 extern void update_temp_slot_address (rtx, rtx); 2202 extern void maybe_copy_epilogue_insn (rtx, rtx); 2203 2204 /* In stmt.c */ 2205 extern void expand_null_return (void); 2206 extern void expand_naked_return (void); 2207 extern void emit_jump (rtx); 2208 2209 /* In expr.c */ 2210 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 2211 unsigned int, int); 2212 2213 /* In cfgrtl.c */ 2214 extern void print_rtl_with_bb (FILE *, const_rtx); 2215 2216 /* In cfg.c. */ 2217 extern void dump_reg_info (FILE *); 2218 extern void dump_flow_info (FILE *, int); 2219 2220 /* In expmed.c */ 2221 extern void init_expmed (void); 2222 extern void expand_inc (rtx, rtx); 2223 extern void expand_dec (rtx, rtx); 2224 2225 /* In gcse.c */ 2226 extern bool can_copy_p (enum machine_mode); 2227 extern rtx fis_get_condition (rtx); 2228 2229 /* In ira.c */ 2230 #ifdef HARD_CONST 2231 extern HARD_REG_SET eliminable_regset; 2232 #endif 2233 extern void mark_elimination (int, int); 2234 2235 /* In reginfo.c */ 2236 extern int reg_classes_intersect_p (enum reg_class, enum reg_class); 2237 extern int reg_class_subset_p (enum reg_class, enum reg_class); 2238 extern void globalize_reg (int); 2239 extern void init_reg_modes_target (void); 2240 extern void init_regs (void); 2241 extern void reinit_regs (void); 2242 extern void init_fake_stack_mems (void); 2243 extern void save_register_info (void); 2244 extern void init_reg_sets (void); 2245 extern void regclass (rtx, int); 2246 extern void reg_scan (rtx, unsigned int); 2247 extern void fix_register (const char *, int, int); 2248 #ifdef HARD_CONST 2249 extern void cannot_change_mode_set_regs (HARD_REG_SET *, 2250 enum machine_mode, unsigned int); 2251 #endif 2252 extern bool invalid_mode_change_p (unsigned int, enum reg_class, 2253 enum machine_mode); 2254 2255 /* In reorg.c */ 2256 extern void dbr_schedule (rtx); 2257 2258 /* In reload1.c */ 2259 extern int function_invariant_p (const_rtx); 2260 2261 /* In calls.c */ 2262 enum libcall_type 2263 { 2264 LCT_NORMAL = 0, 2265 LCT_CONST = 1, 2266 LCT_PURE = 2, 2267 LCT_NORETURN = 3, 2268 LCT_THROW = 4, 2269 LCT_RETURNS_TWICE = 5 2270 }; 2271 2272 extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, 2273 ...); 2274 extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 2275 enum machine_mode, int, ...); 2276 2277 /* In varasm.c */ 2278 extern void init_varasm_once (void); 2279 extern enum tls_model decl_default_tls_model (const_tree); 2280 2281 /* In rtl.c */ 2282 extern void traverse_md_constants (int (*) (void **, void *), void *); 2283 struct md_constant { char *name, *value; }; 2284 2285 /* In read-rtl.c */ 2286 extern int read_skip_spaces (FILE *); 2287 extern bool read_rtx (FILE *, rtx *, int *); 2288 extern void copy_rtx_ptr_loc (const void *, const void *); 2289 extern void print_rtx_ptr_loc (const void *); 2290 extern const char *join_c_conditions (const char *, const char *); 2291 extern void print_c_condition (const char *); 2292 extern const char *read_rtx_filename; 2293 extern int read_rtx_lineno; 2294 2295 /* In alias.c */ 2296 extern rtx canon_rtx (rtx); 2297 extern int true_dependence (const_rtx, enum machine_mode, const_rtx, bool (*)(const_rtx, bool)); 2298 extern rtx get_addr (rtx); 2299 extern int canon_true_dependence (const_rtx, enum machine_mode, rtx, const_rtx, 2300 rtx, bool (*)(const_rtx, bool)); 2301 extern int read_dependence (const_rtx, const_rtx); 2302 extern int anti_dependence (const_rtx, const_rtx); 2303 extern int output_dependence (const_rtx, const_rtx); 2304 extern void init_alias_target (void); 2305 extern void init_alias_analysis (void); 2306 extern void end_alias_analysis (void); 2307 extern bool memory_modified_in_insn_p (const_rtx, const_rtx); 2308 extern rtx find_base_term (rtx); 2309 extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); 2310 extern rtx get_reg_known_value (unsigned int); 2311 extern bool get_reg_known_equiv_p (unsigned int); 2312 2313 #ifdef STACK_REGS 2314 extern int stack_regs_mentioned (const_rtx insn); 2315 #endif 2316 2317 /* In toplev.c */ 2318 extern GTY(()) rtx stack_limit_rtx; 2319 2320 /* In predict.c */ 2321 extern void invert_br_probabilities (rtx); 2322 extern bool expensive_function_p (int); 2323 /* In cfgexpand.c */ 2324 extern void add_reg_br_prob_note (rtx last, int probability); 2325 2326 /* In var-tracking.c */ 2327 extern unsigned int variable_tracking_main (void); 2328 2329 /* In stor-layout.c. */ 2330 extern void get_mode_bounds (enum machine_mode, int, enum machine_mode, 2331 rtx *, rtx *); 2332 2333 /* In loop-unswitch.c */ 2334 extern rtx reversed_condition (rtx); 2335 extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); 2336 2337 /* In loop-iv.c */ 2338 extern rtx canon_condition (rtx); 2339 extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *); 2340 2341 /* In final.c */ 2342 extern unsigned int compute_alignments (void); 2343 2344 struct rtl_hooks 2346 { 2347 rtx (*gen_lowpart) (enum machine_mode, rtx); 2348 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx); 2349 rtx (*reg_nonzero_bits) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2350 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 2351 rtx (*reg_num_sign_bit_copies) (const_rtx, enum machine_mode, const_rtx, enum machine_mode, 2352 unsigned int, unsigned int *); 2353 bool (*reg_truncated_to_mode) (enum machine_mode, const_rtx); 2354 2355 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 2356 }; 2357 2358 /* Each pass can provide its own. */ 2359 extern struct rtl_hooks rtl_hooks; 2360 2361 /* ... but then it has to restore these. */ 2362 extern const struct rtl_hooks general_rtl_hooks; 2363 2364 /* Keep this for the nonce. */ 2365 #define gen_lowpart rtl_hooks.gen_lowpart 2366 2367 extern void insn_locators_alloc (void); 2368 extern void insn_locators_free (void); 2369 extern void insn_locators_finalize (void); 2370 extern void set_curr_insn_source_location (location_t); 2371 extern void set_curr_insn_block (tree); 2372 extern int curr_insn_locator (void); 2373 extern bool optimize_insn_for_size_p (void); 2374 extern bool optimize_insn_for_speed_p (void); 2375 2376 #endif /* ! GCC_RTL_H */ 2377
