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 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to the Free 19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2002110-1301, USA. */ 21 22#ifndef GCC_RTL_H 23#define GCC_RTL_H 24 25#include <sys/param.h> 26#ifndef __PAST_END 27# define __PAST_END(array, offset) (((typeof(*(array)) *)(array))[offset]) 28#endif 29 30#include "statistics.h" 31#include "machmode.h" 32#include "input.h" 33#include "real.h" 34#include "vec.h" 35 36#undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 37#undef FLOAT /* Likewise. */ 38#undef ABS /* Likewise. */ 39#undef PC /* Likewise. */ 40 41/* Value used by some passes to "recognize" noop moves as valid 42 instructions. */ 43#define NOOP_MOVE_INSN_CODE INT_MAX 44 45/* Register Transfer Language EXPRESSIONS CODES */ 46 47#define RTX_CODE enum rtx_code 48enum rtx_code { 49 50#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , 51#include "rtl.def" /* rtl expressions are documented here */ 52#undef DEF_RTL_EXPR 53 54 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for 55 NUM_RTX_CODE. 56 Assumes default enum value assignment. */ 57 58#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 59 /* The cast here, saves many elsewhere. */ 60 61/* Register Transfer Language EXPRESSIONS CODE CLASSES */ 62 63enum rtx_class { 64 /* We check bit 0-1 of some rtx class codes in the predicates below. */ 65 66 /* Bit 0 = comparison if 0, arithmetic is 1 67 Bit 1 = 1 if commutative. */ 68 RTX_COMPARE, /* 0 */ 69 RTX_COMM_COMPARE, 70 RTX_BIN_ARITH, 71 RTX_COMM_ARITH, 72 73 /* Must follow the four preceding values. */ 74 RTX_UNARY, /* 4 */ 75 76 RTX_EXTRA, 77 RTX_MATCH, 78 RTX_INSN, 79 80 /* Bit 0 = 1 if constant. */ 81 RTX_OBJ, /* 8 */ 82 RTX_CONST_OBJ, 83 84 RTX_TERNARY, 85 RTX_BITFIELD_OPS, 86 RTX_AUTOINC 87}; 88 89#define RTX_OBJ_MASK (~1) 90#define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) 91#define RTX_COMPARE_MASK (~1) 92#define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) 93#define RTX_ARITHMETIC_MASK (~1) 94#define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) 95#define RTX_BINARY_MASK (~3) 96#define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) 97#define RTX_COMMUTATIVE_MASK (~2) 98#define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) 99#define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) 100 101extern const unsigned char rtx_length[NUM_RTX_CODE]; 102#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 103 104extern const char * const rtx_name[NUM_RTX_CODE]; 105#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 106 107extern const char * const rtx_format[NUM_RTX_CODE]; 108#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 109 110extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 111#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 112 113extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 114extern const unsigned char rtx_next[NUM_RTX_CODE]; 115 116/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 117 relative to which the offsets are calculated, as explained in rtl.def. */ 118typedef struct 119{ 120 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 121 unsigned min_align: 8; 122 /* Flags: */ 123 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 124 unsigned min_after_vec: 1; /* minimum address target label is 125 after the ADDR_DIFF_VEC. */ 126 unsigned max_after_vec: 1; /* maximum address target label is 127 after the ADDR_DIFF_VEC. */ 128 unsigned min_after_base: 1; /* minimum address target label is 129 after BASE. */ 130 unsigned max_after_base: 1; /* maximum address target label is 131 after BASE. */ 132 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 133 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 134 unsigned : 2; 135 unsigned scale : 8; 136} addr_diff_vec_flags; 137 138/* Structure used to describe the attributes of a MEM. These are hashed 139 so MEMs that the same attributes share a data structure. This means 140 they cannot be modified in place. If any element is nonzero, it means 141 the value of the corresponding attribute is unknown. */ 142/* ALIGN and SIZE are the alignment and size of the MEM itself, 143 while EXPR can describe a larger underlying object, which might have a 144 stricter alignment; OFFSET is the offset of the MEM within that object. */ 145typedef struct mem_attrs GTY(()) 146{ 147 HOST_WIDE_INT alias; /* Memory alias set. */ 148 tree expr; /* expr corresponding to MEM. */ 149 rtx offset; /* Offset from start of DECL, as CONST_INT. */ 150 rtx size; /* Size in bytes, as a CONST_INT. */ 151 unsigned int align; /* Alignment of MEM in bits. */ 152} mem_attrs; 153 154/* Structure used to describe the attributes of a REG in similar way as 155 mem_attrs does for MEM above. */ 156 157typedef struct reg_attrs GTY(()) 158{ 159 tree decl; /* decl corresponding to REG. */ 160 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 161} reg_attrs; 162 163/* Common union for an element of an rtx. */ 164 165union rtunion_def 166{ 167 int rt_int; 168 unsigned int rt_uint; 169 const char *rt_str; 170 rtx rt_rtx; 171 rtvec rt_rtvec; 172 enum machine_mode rt_type; 173 addr_diff_vec_flags rt_addr_diff_vec_flags; 174 struct cselib_val_struct *rt_cselib; 175 struct bitmap_head_def *rt_bit; 176 tree rt_tree; 177 struct basic_block_def *rt_bb; 178 mem_attrs *rt_mem; 179 reg_attrs *rt_reg; 180 struct constant_descriptor_rtx *rt_constant; 181}; 182typedef union rtunion_def rtunion; 183 184/* This structure remembers the position of a SYMBOL_REF within an 185 object_block structure. A SYMBOL_REF only provides this information 186 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 187struct block_symbol GTY(()) { 188 /* The usual SYMBOL_REF fields. */ 189 rtunion GTY ((skip)) fld[3]; 190 191 /* The block that contains this object. */ 192 struct object_block *block; 193 194 /* The offset of this object from the start of its block. It is negative 195 if the symbol has not yet been assigned an offset. */ 196 HOST_WIDE_INT offset; 197}; 198 199DEF_VEC_P(rtx); 200DEF_VEC_ALLOC_P(rtx,heap); 201DEF_VEC_ALLOC_P(rtx,gc); 202 203/* Describes a group of objects that are to be placed together in such 204 a way that their relative positions are known. */ 205struct object_block GTY(()) 206{ 207 /* The section in which these objects should be placed. */ 208 section *sect; 209 210 /* The alignment of the first object, measured in bits. */ 211 unsigned int alignment; 212 213 /* The total size of the objects, measured in bytes. */ 214 HOST_WIDE_INT size; 215 216 /* The SYMBOL_REFs for each object. The vector is sorted in 217 order of increasing offset and the following conditions will 218 hold for each element X: 219 220 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 221 !SYMBOL_REF_ANCHOR_P (X) 222 SYMBOL_REF_BLOCK (X) == [address of this structure] 223 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 224 VEC(rtx,gc) *objects; 225 226 /* All the anchor SYMBOL_REFs used to address these objects, sorted 227 in order of increasing offset, and then increasing TLS model. 228 The following conditions will hold for each element X in this vector: 229 230 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 231 SYMBOL_REF_ANCHOR_P (X) 232 SYMBOL_REF_BLOCK (X) == [address of this structure] 233 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 234 VEC(rtx,gc) *anchors; 235}; 236 237/* RTL expression ("rtx"). */ 238 239struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"), 240 chain_prev ("RTX_PREV (&%h)"))) 241{ 242 /* The kind of expression this is. */ 243 ENUM_BITFIELD(rtx_code) code: 16; 244 245 /* The kind of value the expression has. */ 246 ENUM_BITFIELD(machine_mode) mode : 8; 247 248 /* 1 in a MEM if we should keep the alias set for this mem unchanged 249 when we access a component. 250 1 in a CALL_INSN if it is a sibling call. 251 1 in a SET that is for a return. 252 In a CODE_LABEL, part of the two-bit alternate entry field. */ 253 unsigned int jump : 1; 254 /* In a CODE_LABEL, part of the two-bit alternate entry field. 255 1 in a MEM if it cannot trap. */ 256 unsigned int call : 1; 257 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 258 1 in a SUBREG if it references an unsigned object whose mode has been 259 from a promoted to a wider mode. 260 1 in a SYMBOL_REF if it addresses something in the per-function 261 constants pool. 262 1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call. 263 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */ 264 unsigned int unchanging : 1; 265 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 266 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 267 if it has been deleted. 268 1 in a REG expression if corresponds to a variable declared by the user, 269 0 for an internally generated temporary. 270 1 in a SUBREG with a negative value. 271 1 in a LABEL_REF or in a REG_LABEL note for a non-local label. 272 In a SYMBOL_REF, this flag is used for machine-specific purposes. */ 273 unsigned int volatil : 1; 274 /* 1 in a MEM referring to a field of an aggregate. 275 0 if the MEM was a variable or the result of a * operator in C; 276 1 if it was the result of a . or -> operator (on a struct) in C. 277 1 in a REG if the register is used only in exit code a loop. 278 1 in a SUBREG expression if was generated from a variable with a 279 promoted mode. 280 1 in a CODE_LABEL if the label is used for nonlocal gotos 281 and must not be deleted even if its count is zero. 282 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 283 together with the preceding insn. Valid only within sched. 284 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 285 from the target of a branch. Valid from reorg until end of compilation; 286 cleared before used. */ 287 unsigned int in_struct : 1; 288 /* At the end of RTL generation, 1 if this rtx is used. This is used for 289 copying shared structure. See `unshare_all_rtl'. 290 In a REG, this is not needed for that purpose, and used instead 291 in `leaf_renumber_regs_insn'. 292 1 in a SYMBOL_REF, means that emit_library_call 293 has used it as the function. */ 294 unsigned int used : 1; 295 /* 1 in an INSN or a SET if this rtx is related to the call frame, 296 either changing how we compute the frame address or saving and 297 restoring registers in the prologue and epilogue. 298 1 in a REG or MEM if it is a pointer. 299 1 in a SYMBOL_REF if it addresses something in the per-function 300 constant string pool. */ 301 unsigned frame_related : 1; 302 /* 1 in a REG or PARALLEL that is the current function's return value. 303 1 in a MEM if it refers to a scalar. 304 1 in a SYMBOL_REF for a weak symbol. */ 305 unsigned return_val : 1; 306 307 /* The first element of the operands of this rtx. 308 The number of operands and their types are controlled 309 by the `code' field, according to rtl.def. */ 310 union u { 311 rtunion fld[1]; 312 HOST_WIDE_INT hwint[1]; 313 struct block_symbol block_sym; 314 struct real_value rv; 315 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 316}; 317 318/* The size in bytes of an rtx header (code, mode and flags). */ 319#define RTX_HDR_SIZE offsetof (struct rtx_def, u) 320 321/* The size in bytes of an rtx with code CODE. */ 322#define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 323 324#define NULL_RTX (rtx) 0 325 326/* The "next" and "previous" RTX, relative to this one. */ 327 328#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 329 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 330 331/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 332 */ 333#define RTX_PREV(X) ((INSN_P (X) \ 334 || NOTE_P (X) \ 335 || BARRIER_P (X) \ 336 || LABEL_P (X)) \ 337 && PREV_INSN (X) != NULL \ 338 && NEXT_INSN (PREV_INSN (X)) == X \ 339 ? PREV_INSN (X) : NULL) 340 341/* Define macros to access the `code' field of the rtx. */ 342 343#define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 344#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 345 346#define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) 347#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 348 349/* RTL vector. These appear inside RTX's when there is a need 350 for a variable number of things. The principle use is inside 351 PARALLEL expressions. */ 352 353struct rtvec_def GTY(()) { 354 int num_elem; /* number of elements */ 355 rtx GTY ((length ("%h.num_elem"))) elem[1]; 356}; 357 358#define NULL_RTVEC (rtvec) 0 359 360#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 361#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 362 363/* Predicate yielding nonzero iff X is an rtx for a register. */ 364#define REG_P(X) (GET_CODE (X) == REG) 365 366/* Predicate yielding nonzero iff X is an rtx for a memory location. */ 367#define MEM_P(X) (GET_CODE (X) == MEM) 368 369/* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 370#define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 371 372/* Predicate yielding nonzero iff X is a label insn. */ 373#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 374 375/* Predicate yielding nonzero iff X is a jump insn. */ 376#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 377 378/* Predicate yielding nonzero iff X is a call insn. */ 379#define CALL_P(X) (GET_CODE (X) == CALL_INSN) 380 381/* Predicate yielding nonzero iff X is an insn that cannot jump. */ 382#define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 383 384/* Predicate yielding nonzero iff X is a real insn. */ 385#define INSN_P(X) \ 386 (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 387 388/* Predicate yielding nonzero iff X is a note insn. */ 389#define NOTE_P(X) (GET_CODE (X) == NOTE) 390 391/* Predicate yielding nonzero iff X is a barrier insn. */ 392#define BARRIER_P(X) (GET_CODE (X) == BARRIER) 393 394/* Predicate yielding nonzero iff X is a data for a jump table. */ 395#define JUMP_TABLE_DATA_P(INSN) \ 396 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ 397 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) 398 399/* 1 if X is a unary operator. */ 400 401#define UNARY_P(X) \ 402 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 403 404/* 1 if X is a binary operator. */ 405 406#define BINARY_P(X) \ 407 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 408 409/* 1 if X is an arithmetic operator. */ 410 411#define ARITHMETIC_P(X) \ 412 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 413 == RTX_ARITHMETIC_RESULT) 414 415/* 1 if X is an arithmetic operator. */ 416 417#define COMMUTATIVE_ARITH_P(X) \ 418 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 419 420/* 1 if X is a commutative arithmetic operator or a comparison operator. 421 These two are sometimes selected together because it is possible to 422 swap the two operands. */ 423 424#define SWAPPABLE_OPERANDS_P(X) \ 425 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 426 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 427 | (1 << RTX_COMPARE))) 428 429/* 1 if X is a non-commutative operator. */ 430 431#define NON_COMMUTATIVE_P(X) \ 432 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 433 == RTX_NON_COMMUTATIVE_RESULT) 434 435/* 1 if X is a commutative operator on integers. */ 436 437#define COMMUTATIVE_P(X) \ 438 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 439 == RTX_COMMUTATIVE_RESULT) 440 441/* 1 if X is a relational operator. */ 442 443#define COMPARISON_P(X) \ 444 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 445 446/* 1 if X is a constant value that is an integer. */ 447 448#define CONSTANT_P(X) \ 449 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 450 451/* 1 if X can be used to represent an object. */ 452#define OBJECT_P(X) \ 453 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 454 455/* General accessor macros for accessing the fields of an rtx. */ 456 457#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 458/* The bit with a star outside the statement expr and an & inside is 459 so that N can be evaluated only once. */ 460#define RTL_CHECK1(RTX, N, C1) __extension__ \ 461(*({ rtx const _rtx = (RTX); const int _n = (N); \ 462 const enum rtx_code _code = GET_CODE (_rtx); \ 463 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 464 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 465 __FUNCTION__); \ 466 if (GET_RTX_FORMAT(_code)[_n] != C1) \ 467 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 468 __FUNCTION__); \ 469 &_rtx->u.fld[_n]; })) 470 471#define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 472(*({ rtx const _rtx = (RTX); const int _n = (N); \ 473 const enum rtx_code _code = GET_CODE (_rtx); \ 474 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 475 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 476 __FUNCTION__); \ 477 if (GET_RTX_FORMAT(_code)[_n] != C1 \ 478 && GET_RTX_FORMAT(_code)[_n] != C2) \ 479 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 480 __FUNCTION__); \ 481 &_rtx->u.fld[_n]; })) 482 483#define RTL_CHECKC1(RTX, N, C) __extension__ \ 484(*({ rtx const _rtx = (RTX); const int _n = (N); \ 485 if (GET_CODE (_rtx) != (C)) \ 486 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 487 __FUNCTION__); \ 488 &_rtx->u.fld[_n]; })) 489 490#define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 491(*({ rtx const _rtx = (RTX); const int _n = (N); \ 492 const enum rtx_code _code = GET_CODE (_rtx); \ 493 if (_code != (C1) && _code != (C2)) \ 494 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 495 __FUNCTION__); \ 496 &_rtx->u.fld[_n]; })) 497 498#define RTVEC_ELT(RTVEC, I) __extension__ \ 499(*({ rtvec const _rtvec = (RTVEC); const int _i = (I); \ 500 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 501 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 502 __FUNCTION__); \ 503 &_rtvec->elem[_i]; })) 504 505#define XWINT(RTX, N) __extension__ \ 506(*({ rtx const _rtx = (RTX); const int _n = (N); \ 507 const enum rtx_code _code = GET_CODE (_rtx); \ 508 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 509 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 510 __FUNCTION__); \ 511 if (GET_RTX_FORMAT(_code)[_n] != 'w') \ 512 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 513 __FUNCTION__); \ 514 &_rtx->u.hwint[_n]; })) 515 516#define XCWINT(RTX, N, C) __extension__ \ 517(*({ rtx const _rtx = (RTX); \ 518 if (GET_CODE (_rtx) != (C)) \ 519 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 520 __FUNCTION__); \ 521 &_rtx->u.hwint[N]; })) 522 523#define XCMWINT(RTX, N, C, M) __extension__ \ 524(*({ rtx const _rtx = (RTX); \ 525 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 526 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 527 __LINE__, __FUNCTION__); \ 528 &_rtx->u.hwint[N]; })) 529 530#define XCNMPRV(RTX, C, M) __extension__ \ 531({ rtx const _rtx = (RTX); \ 532 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 533 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 534 __LINE__, __FUNCTION__); \ 535 &_rtx->u.rv; }) 536 537#define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 538({ rtx const _symbol = (RTX); \ 539 unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \ 540 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 541 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 542 __FUNCTION__); \ 543 &_symbol->u.block_sym; }) 544 545extern void rtl_check_failed_bounds (rtx, int, const char *, int, 546 const char *) 547 ATTRIBUTE_NORETURN; 548extern void rtl_check_failed_type1 (rtx, int, int, const char *, int, 549 const char *) 550 ATTRIBUTE_NORETURN; 551extern void rtl_check_failed_type2 (rtx, int, int, int, const char *, 552 int, const char *) 553 ATTRIBUTE_NORETURN; 554extern void rtl_check_failed_code1 (rtx, enum rtx_code, const char *, 555 int, const char *) 556 ATTRIBUTE_NORETURN; 557extern void rtl_check_failed_code2 (rtx, enum rtx_code, enum rtx_code, 558 const char *, int, const char *) 559 ATTRIBUTE_NORETURN; 560extern void rtl_check_failed_code_mode (rtx, enum rtx_code, enum machine_mode, 561 bool, const char *, int, const char *) 562 ATTRIBUTE_NORETURN; 563extern void rtl_check_failed_block_symbol (const char *, int, const char *) 564 ATTRIBUTE_NORETURN; 565extern void rtvec_check_failed_bounds (rtvec, int, const char *, int, 566 const char *) 567 ATTRIBUTE_NORETURN; 568 569#else /* not ENABLE_RTL_CHECKING */ 570 571#define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 572#define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 573#define RTL_CHECKC1(RTX, N, C) __PAST_END((RTX)->u.fld, N) 574#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 575#define RTVEC_ELT(RTVEC, I) __PAST_END((RTVEC)->elem, I) 576#define XWINT(RTX, N) ((RTX)->u.hwint[N]) 577#define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 578#define XCMWINT(RTX, N, C, M) __PAST_END((RTX)->u.hwint, N) 579#define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 580#define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 581#define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 582 583#endif 584 585/* General accessor macros for accessing the flags of an rtx. */ 586 587/* Access an individual rtx flag, with no checking of any kind. */ 588#define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 589 590#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 591#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 592({ rtx const _rtx = (RTX); \ 593 if (GET_CODE(_rtx) != C1) \ 594 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 595 __FUNCTION__); \ 596 _rtx; }) 597 598#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 599({ rtx const _rtx = (RTX); \ 600 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ 601 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 602 __FUNCTION__); \ 603 _rtx; }) 604 605#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 606({ rtx const _rtx = (RTX); \ 607 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 608 && GET_CODE(_rtx) != C3) \ 609 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 610 __FUNCTION__); \ 611 _rtx; }) 612 613#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 614({ rtx const _rtx = (RTX); \ 615 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 616 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ 617 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 618 __FUNCTION__); \ 619 _rtx; }) 620 621#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 622({ rtx const _rtx = (RTX); \ 623 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 624 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 625 && GET_CODE(_rtx) != C5) \ 626 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 627 __FUNCTION__); \ 628 _rtx; }) 629 630#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 631 __extension__ \ 632({ rtx const _rtx = (RTX); \ 633 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 634 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 635 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ 636 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 637 __FUNCTION__); \ 638 _rtx; }) 639 640#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 641 __extension__ \ 642({ rtx const _rtx = (RTX); \ 643 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 644 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 645 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 646 && GET_CODE(_rtx) != C7) \ 647 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 648 __FUNCTION__); \ 649 _rtx; }) 650 651#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ 652 __extension__ \ 653({ rtx const _rtx = (RTX); \ 654 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 655 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 656 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 657 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ 658 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 659 __FUNCTION__); \ 660 _rtx; }) 661 662extern void rtl_check_failed_flag (const char *, rtx, const char *, 663 int, const char *) 664 ATTRIBUTE_NORETURN 665 ; 666 667#else /* not ENABLE_RTL_FLAG_CHECKING */ 668 669#define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 670#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 671#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 672#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 673#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 674#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 675#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 676#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) 677#endif 678 679#define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 680#define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 681#define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 682#define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 683#define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 684#define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rt_bit) 685#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 686#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 687#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 688 689#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 690#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 691 692/* These are like XINT, etc. except that they expect a '0' field instead 693 of the normal type code. */ 694 695#define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 696#define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 697#define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 698#define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 699#define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 700#define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 701#define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bit) 702#define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 703#define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 704#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 705#define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 706#define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 707#define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 708#define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 709 710/* Access a '0' field with any type. */ 711#define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 712 713#define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 714#define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 715#define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 716#define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 717#define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 718#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 719#define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit) 720#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 721#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 722#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 723 724#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 725#define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 726 727#define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 728 729/* ACCESS MACROS for particular fields of insns. */ 730 731/* Holds a unique number for each insn. 732 These are not necessarily sequentially increasing. */ 733#define INSN_UID(INSN) XINT (INSN, 0) 734 735/* Chain insns together in sequence. */ 736#define PREV_INSN(INSN) XEXP (INSN, 1) 737#define NEXT_INSN(INSN) XEXP (INSN, 2) 738 739#define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) 740#define INSN_LOCATOR(INSN) XINT (INSN, 4) 741/* The body of an insn. */ 742#define PATTERN(INSN) XEXP (INSN, 5) 743 744/* Code number of instruction, from when it was recognized. 745 -1 means this instruction has not been recognized yet. */ 746#define INSN_CODE(INSN) XINT (INSN, 6) 747 748/* Set up in flow.c; empty before then. 749 Holds a chain of INSN_LIST rtx's whose first operands point at 750 previous insns with direct data-flow connections to this one. 751 That means that those insns set variables whose next use is in this insn. 752 They are always in the same basic block as this insn. */ 753#define LOG_LINKS(INSN) XEXP(INSN, 7) 754 755#define RTX_FRAME_RELATED_P(RTX) \ 756 (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \ 757 JUMP_INSN, BARRIER, SET)->frame_related) 758 759/* 1 if RTX is an insn that has been deleted. */ 760#define INSN_DELETED_P(RTX) \ 761 (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \ 762 CODE_LABEL, BARRIER, NOTE)->volatil) 763 764/* 1 if RTX is a call to a const or pure function. */ 765#define CONST_OR_PURE_CALL_P(RTX) \ 766 (RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE, \ 767 EXPR_LIST)->unchanging) 768 769/* 1 if RTX is a call_insn for a sibling call. */ 770#define SIBLING_CALL_P(RTX) \ 771 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 772 773/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 774#define INSN_ANNULLED_BRANCH_P(RTX) \ 775 (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging) 776 777/* 1 if RTX is an insn in a delay slot and is from the target of the branch. 778 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 779 executed if the branch is taken. For annulled branches with this bit 780 clear, the insn should be executed only if the branch is not taken. */ 781#define INSN_FROM_TARGET_P(RTX) \ 782 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) 783 784/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 785 See the comments for ADDR_DIFF_VEC in rtl.def. */ 786#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) 787 788/* In a VALUE, the value cselib has assigned to RTX. 789 This is a "struct cselib_val_struct", see cselib.h. */ 790#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) 791 792/* Holds a list of notes on what this insn does to various REGs. 793 It is a chain of EXPR_LIST rtx's, where the second operand is the 794 chain pointer and the first operand is the REG being described. 795 The mode field of the EXPR_LIST contains not a real machine mode 796 but a value from enum reg_note. */ 797#define REG_NOTES(INSN) XEXP(INSN, 8) 798 799enum reg_note 800{ 801#define DEF_REG_NOTE(NAME) NAME, 802#include "reg-notes.def" 803#undef DEF_REG_NOTE 804 REG_NOTE_MAX 805}; 806 807/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 808#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 809#define PUT_REG_NOTE_KIND(LINK, KIND) \ 810 PUT_MODE (LINK, (enum machine_mode) (KIND)) 811 812/* Names for REG_NOTE's in EXPR_LIST insn's. */ 813 814extern const char * const reg_note_name[]; 815#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 816 817/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 818 USE and CLOBBER expressions. 819 USE expressions list the registers filled with arguments that 820 are passed to the function. 821 CLOBBER expressions document the registers explicitly clobbered 822 by this CALL_INSN. 823 Pseudo registers can not be mentioned in this list. */ 824#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 9) 825 826/* The label-number of a code-label. The assembler label 827 is made from `L' and the label-number printed in decimal. 828 Label numbers are unique in a compilation. */ 829#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) 830 831/* In a NOTE that is a line number, this is a string for the file name that the 832 line is in. We use the same field to record block numbers temporarily in 833 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 834 between ints and pointers if we use a different macro for the block number.) 835 */ 836 837/* Opaque data. */ 838#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) 839#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE) 840#ifdef USE_MAPPED_LOCATION 841#define NOTE_SOURCE_LOCATION(INSN) XCUINT (INSN, 5, NOTE) 842#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \ 843 (XLOC) = expand_location (NOTE_SOURCE_LOCATION (INSN)) 844#define SET_INSN_DELETED(INSN) \ 845 (PUT_CODE (INSN, NOTE), NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED) 846#else 847#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \ 848 ((XLOC).file = NOTE_SOURCE_FILE (INSN), \ 849 (XLOC).line = NOTE_LINE_NUMBER (INSN)) 850#define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 4, NOTE) 851#define SET_INSN_DELETED(INSN) \ 852 (PUT_CODE (INSN, NOTE), NOTE_SOURCE_FILE (INSN) = 0, \ 853 NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED) 854#endif 855#define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) 856#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) 857#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) 858#define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 4, NOTE) 859#define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) 860 861/* In a NOTE that is a line number, this is the line number. 862 Other kinds of NOTEs are identified by negative numbers here. */ 863#define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE) 864 865/* Nonzero if INSN is a note marking the beginning of a basic block. */ 866#define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 867 (GET_CODE (INSN) == NOTE \ 868 && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK) 869 870/* Variable declaration and the location of a variable. */ 871#define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \ 872 0, VAR_LOCATION)) 873#define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \ 874 1, VAR_LOCATION)) 875 876/* Codes that appear in the NOTE_LINE_NUMBER field for kinds of notes 877 that are not line numbers. These codes are all negative. 878 879 Notice that we do not try to use zero here for any of 880 the special note codes because sometimes the source line 881 actually can be zero! This happens (for example) when we 882 are generating code for the per-translation-unit constructor 883 and destructor routines for some C++ translation unit. */ 884 885enum insn_note 886{ 887 /* Keep all of these numbers negative. Adjust as needed. */ 888 NOTE_INSN_BIAS = -100, 889 890#define DEF_INSN_NOTE(NAME) NAME, 891#include "insn-notes.def" 892#undef DEF_INSN_NOTE 893 894 NOTE_INSN_MAX 895}; 896 897/* Names for NOTE insn's other than line numbers. */ 898 899extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; 900#define GET_NOTE_INSN_NAME(NOTE_CODE) \ 901 (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS]) 902 903/* The name of a label, in case it corresponds to an explicit label 904 in the input source code. */ 905#define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) 906 907/* In jump.c, each label contains a count of the number 908 of LABEL_REFs that point at it, so unused labels can be deleted. */ 909#define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) 910 911/* APPLE LOCAL begin for-fsf-4_4 3274130 5295549 */ \ 912/* The alignment of the label, as the log-base-2 of the alignment in bytes. */ 913#define LABEL_ALIGN_LOG(RTX) (XCUINT (RTX, 8, CODE_LABEL) & 0xFF) 914/* The maximum number of bytes to skip to achieve that alignment. */ 915#define LABEL_MAX_SKIP(RTX) (XCUINT (RTX, 8, CODE_LABEL) >> 8) 916#define SET_LABEL_ALIGN(RTX, ALIGN, MAX_SKIP) \ 917 (XCUINT (RTX, 8, CODE_LABEL) = (ALIGN) | ((MAX_SKIP) << 8)) 918 919/* APPLE LOCAL end for-fsf-4_4 3274130 5295549 */ \ 920/* Labels carry a two-bit field composed of the ->jump and ->call 921 bits. This field indicates whether the label is an alternate 922 entry point, and if so, what kind. */ 923enum label_kind 924{ 925 LABEL_NORMAL = 0, /* ordinary label */ 926 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 927 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 928 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 929}; 930 931#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 932 933/* Retrieve the kind of LABEL. */ 934#define LABEL_KIND(LABEL) __extension__ \ 935({ rtx const _label = (LABEL); \ 936 if (GET_CODE (_label) != CODE_LABEL) \ 937 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 938 __FUNCTION__); \ 939 (enum label_kind) ((_label->jump << 1) | _label->call); }) 940 941/* Set the kind of LABEL. */ 942#define SET_LABEL_KIND(LABEL, KIND) do { \ 943 rtx _label = (LABEL); \ 944 unsigned int _kind = (KIND); \ 945 if (GET_CODE (_label) != CODE_LABEL) \ 946 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 947 __FUNCTION__); \ 948 _label->jump = ((_kind >> 1) & 1); \ 949 _label->call = (_kind & 1); \ 950} while (0) 951 952#else 953 954/* Retrieve the kind of LABEL. */ 955#define LABEL_KIND(LABEL) \ 956 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 957 958/* Set the kind of LABEL. */ 959#define SET_LABEL_KIND(LABEL, KIND) do { \ 960 rtx _label = (LABEL); \ 961 unsigned int _kind = (KIND); \ 962 _label->jump = ((_kind >> 1) & 1); \ 963 _label->call = (_kind & 1); \ 964} while (0) 965 966#endif /* rtl flag checking */ 967 968#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 969 970/* In jump.c, each JUMP_INSN can point to a label that it can jump to, 971 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 972 be decremented and possibly the label can be deleted. */ 973#define JUMP_LABEL(INSN) XCEXP (INSN, 9, JUMP_INSN) 974 975/* Once basic blocks are found in flow.c, 976 each CODE_LABEL starts a chain that goes through 977 all the LABEL_REFs that jump to that label. 978 The chain eventually winds up at the CODE_LABEL: it is circular. */ 979#define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL) 980 981/* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds 982 the number the register originally had; for a pseudo register turned into 983 a hard reg this will hold the old pseudo register number. */ 984 985#define REGNO(RTX) XCUINT (RTX, 0, REG) 986#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) 987 988/* 1 if RTX is a reg or parallel that is the current function's return 989 value. */ 990#define REG_FUNCTION_VALUE_P(RTX) \ 991 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 992 993/* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 994#define REG_USERVAR_P(RTX) \ 995 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) 996 997/* 1 if RTX is a reg that holds a pointer value. */ 998#define REG_POINTER(RTX) \ 999 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) 1000 1001/* 1 if RTX is a mem that holds a pointer value. */ 1002#define MEM_POINTER(RTX) \ 1003 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) 1004 1005/* 1 if the given register REG corresponds to a hard register. */ 1006#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1007 1008/* 1 if the given register number REG_NO corresponds to a hard register. */ 1009#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1010 1011/* For a CONST_INT rtx, INTVAL extracts the integer. */ 1012#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) 1013#define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1014 1015/* For a CONST_DOUBLE: 1016 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1017 low-order word and ..._HIGH the high-order. 1018 For a float, there is a REAL_VALUE_TYPE structure, and 1019 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1020#define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1021#define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1022#define CONST_DOUBLE_REAL_VALUE(r) \ 1023 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1024 1025/* For a CONST_VECTOR, return element #n. */ 1026#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1027 1028/* For a CONST_VECTOR, return the number of elements in a vector. */ 1029#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1030 1031/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1032 SUBREG_BYTE extracts the byte-number. */ 1033 1034#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1035#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1036 1037/* in rtlanal.c */ 1038/* Return the right cost to give to an operation 1039 to make the cost of the corresponding register-to-register instruction 1040 N times that of a fast register-to-register instruction. */ 1041#define COSTS_N_INSNS(N) ((N) * 4) 1042 1043/* Maximum cost of an rtl expression. This value has the special meaning 1044 not to use an rtx with this cost under any circumstances. */ 1045#define MAX_COST INT_MAX 1046 1047extern void init_rtlanal (void); 1048extern int rtx_cost (rtx, enum rtx_code); 1049extern int address_cost (rtx, enum machine_mode); 1050extern unsigned int subreg_lsb (rtx); 1051extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, 1052 unsigned int); 1053extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, 1054 unsigned int, enum machine_mode); 1055extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, 1056 unsigned int, enum machine_mode); 1057extern unsigned int subreg_regno (rtx); 1058extern unsigned HOST_WIDE_INT nonzero_bits (rtx, enum machine_mode); 1059extern unsigned int num_sign_bit_copies (rtx, enum machine_mode); 1060extern bool constant_pool_constant_p (rtx); 1061extern bool truncated_to_mode (enum machine_mode, rtx); 1062 1063 1064/* 1 if RTX is a subreg containing a reg that is already known to be 1065 sign- or zero-extended from the mode of the subreg to the mode of 1066 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 1067 extension. 1068 1069 When used as a LHS, is means that this extension must be done 1070 when assigning to SUBREG_REG. */ 1071 1072#define SUBREG_PROMOTED_VAR_P(RTX) \ 1073 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 1074 1075#define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ 1076do { \ 1077 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ 1078 if ((VAL) < 0) \ 1079 _rtx->volatil = 1; \ 1080 else { \ 1081 _rtx->volatil = 0; \ 1082 _rtx->unchanging = (VAL); \ 1083 } \ 1084} while (0) 1085#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 1086 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ 1087 ? -1 : (RTX)->unchanging) 1088 1089/* Access various components of an ASM_OPERANDS rtx. */ 1090 1091#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 1092#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 1093#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 1094#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 1095#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 1096#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 1097#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 1098#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 1099 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 1100#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 1101 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 1102#define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 1103 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 1104#ifdef USE_MAPPED_LOCATION 1105#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS) 1106#else 1107#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS) 1108#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS) 1109#endif 1110 1111/* 1 if RTX is a mem that is statically allocated in read-only memory. */ 1112#define MEM_READONLY_P(RTX) \ 1113 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging) 1114 1115/* 1 if RTX is a mem and we should keep the alias set for this mem 1116 unchanged when we access a component. Set to 1, or example, when we 1117 are already in a non-addressable component of an aggregate. */ 1118#define MEM_KEEP_ALIAS_SET_P(RTX) \ 1119 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 1120 1121/* 1 if RTX is a mem or asm_operand for a volatile reference. */ 1122#define MEM_VOLATILE_P(RTX) \ 1123 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 1124 ASM_INPUT)->volatil) 1125 1126/* 1 if RTX is a mem that refers to an aggregate, either to the 1127 aggregate itself or to a field of the aggregate. If zero, RTX may 1128 or may not be such a reference. */ 1129#define MEM_IN_STRUCT_P(RTX) \ 1130 (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct) 1131 1132/* 1 if RTX is a MEM that refers to a scalar. If zero, RTX may or may 1133 not refer to a scalar. */ 1134#define MEM_SCALAR_P(RTX) \ 1135 (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val) 1136 1137/* 1 if RTX is a mem that cannot trap. */ 1138#define MEM_NOTRAP_P(RTX) \ 1139 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) 1140 1141/* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in 1142 RTX. Otherwise, vice versa. Use this macro only when you are 1143 *sure* that you know that the MEM is in a structure, or is a 1144 scalar. VAL is evaluated only once. */ 1145#define MEM_SET_IN_STRUCT_P(RTX, VAL) \ 1146do { \ 1147 if (VAL) \ 1148 { \ 1149 MEM_IN_STRUCT_P (RTX) = 1; \ 1150 MEM_SCALAR_P (RTX) = 0; \ 1151 } \ 1152 else \ 1153 { \ 1154 MEM_IN_STRUCT_P (RTX) = 0; \ 1155 MEM_SCALAR_P (RTX) = 1; \ 1156 } \ 1157} while (0) 1158 1159/* The memory attribute block. We provide access macros for each value 1160 in the block and provide defaults if none specified. */ 1161#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 1162 1163/* The register attribute block. We provide access macros for each value 1164 in the block and provide defaults if none specified. */ 1165#define REG_ATTRS(RTX) X0REGATTR (RTX, 2) 1166 1167/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 1168 set, and may alias anything. Otherwise, the MEM can only alias 1169 MEMs in a conflicting alias set. This value is set in a 1170 language-dependent manner in the front-end, and should not be 1171 altered in the back-end. These set numbers are tested with 1172 alias_sets_conflict_p. */ 1173#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias) 1174 1175/* For a MEM rtx, the decl it is known to refer to, if it is known to 1176 refer to part of a DECL. It may also be a COMPONENT_REF. */ 1177#define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr) 1178 1179/* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a 1180 RTX that is always a CONST_INT. */ 1181#define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset) 1182 1183/* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that 1184 is always a CONST_INT. */ 1185#define MEM_SIZE(RTX) \ 1186(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ 1187 : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ 1188 : 0) 1189 1190/* For a MEM rtx, the alignment in bits. We can use the alignment of the 1191 mode as a default when STRICT_ALIGNMENT, but not if not. */ 1192#define MEM_ALIGN(RTX) \ 1193(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \ 1194 : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \ 1195 ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT)) 1196 1197/* For a REG rtx, the decl it is known to refer to, if it is known to 1198 refer to part of a DECL. */ 1199#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 1200 1201/* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 1202 HOST_WIDE_INT. */ 1203#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 1204 1205/* Copy the attributes that apply to memory locations from RHS to LHS. */ 1206#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 1207 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 1208 MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ 1209 MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ 1210 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 1211 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 1212 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 1213 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 1214 1215/* 1 if RTX is a label_ref for a nonlocal label. */ 1216/* Likewise in an expr_list for a reg_label note. */ 1217#define LABEL_REF_NONLOCAL_P(RTX) \ 1218 (RTL_FLAG_CHECK2("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF, \ 1219 REG_LABEL)->volatil) 1220 1221/* 1 if RTX is a code_label that should always be considered to be needed. */ 1222#define LABEL_PRESERVE_P(RTX) \ 1223 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 1224 1225/* During sched, 1 if RTX is an insn that must be scheduled together 1226 with the preceding insn. */ 1227#define SCHED_GROUP_P(RTX) \ 1228 (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \ 1229 )->in_struct) 1230 1231/* For a SET rtx, SET_DEST is the place that is set 1232 and SET_SRC is the value it is set to. */ 1233#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) 1234#define SET_SRC(RTX) XCEXP(RTX, 1, SET) 1235#define SET_IS_RETURN_P(RTX) \ 1236 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) 1237 1238/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 1239#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 1240#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 1241 1242/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 1243 conditionally executing the code on, COND_EXEC_CODE is the code 1244 to execute if the condition is true. */ 1245#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 1246#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 1247 1248/* 1 if RTX is a symbol_ref that addresses this function's rtl 1249 constants pool. */ 1250#define CONSTANT_POOL_ADDRESS_P(RTX) \ 1251 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 1252 1253/* 1 if RTX is a symbol_ref that addresses a value in the file's 1254 tree constant pool. This information is private to varasm.c. */ 1255#define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 1256 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ 1257 (RTX), SYMBOL_REF)->frame_related) 1258 1259/* Used if RTX is a symbol_ref, for machine-specific purposes. */ 1260#define SYMBOL_REF_FLAG(RTX) \ 1261 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 1262 1263/* 1 if RTX is a symbol_ref that has been the library function in 1264 emit_library_call. */ 1265#define SYMBOL_REF_USED(RTX) \ 1266 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 1267 1268/* 1 if RTX is a symbol_ref for a weak symbol. */ 1269#define SYMBOL_REF_WEAK(RTX) \ 1270 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 1271 1272/* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 1273 SYMBOL_REF_CONSTANT. */ 1274#define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2) 1275 1276/* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 1277 pool symbol. */ 1278#define SET_SYMBOL_REF_DECL(RTX, DECL) \ 1279 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL)) 1280 1281/* The tree (decl or constant) associated with the symbol, or null. */ 1282#define SYMBOL_REF_DECL(RTX) \ 1283 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2)) 1284 1285/* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 1286#define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 1287 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C)) 1288 1289/* The rtx constant pool entry for a symbol, or null. */ 1290#define SYMBOL_REF_CONSTANT(RTX) \ 1291 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL) 1292 1293/* A set of flags on a symbol_ref that are, in some respects, redundant with 1294 information derivable from the tree decl associated with this symbol. 1295 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 1296 decl. In some cases this is a bug. But beyond that, it's nice to cache 1297 this information to avoid recomputing it. Finally, this allows space for 1298 the target to store more than one bit of information, as with 1299 SYMBOL_REF_FLAG. */ 1300#define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) 1301 1302/* These flags are common enough to be defined for all targets. They 1303 are computed by the default version of targetm.encode_section_info. */ 1304 1305/* Set if this symbol is a function. */ 1306#define SYMBOL_FLAG_FUNCTION (1 << 0) 1307#define SYMBOL_REF_FUNCTION_P(RTX) \ 1308 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 1309/* Set if targetm.binds_local_p is true. */ 1310#define SYMBOL_FLAG_LOCAL (1 << 1) 1311#define SYMBOL_REF_LOCAL_P(RTX) \ 1312 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 1313/* Set if targetm.in_small_data_p is true. */ 1314#define SYMBOL_FLAG_SMALL (1 << 2) 1315#define SYMBOL_REF_SMALL_P(RTX) \ 1316 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 1317/* The three-bit field at [5:3] is true for TLS variables; use 1318 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 1319#define SYMBOL_FLAG_TLS_SHIFT 3 1320#define SYMBOL_REF_TLS_MODEL(RTX) \ 1321 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 1322/* Set if this symbol is not defined in this translation unit. */ 1323#define SYMBOL_FLAG_EXTERNAL (1 << 6) 1324#define SYMBOL_REF_EXTERNAL_P(RTX) \ 1325 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 1326/* Set if this symbol has a block_symbol structure associated with it. */ 1327#define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 1328#define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 1329 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 1330/* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 1331 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 1332#define SYMBOL_FLAG_ANCHOR (1 << 8) 1333#define SYMBOL_REF_ANCHOR_P(RTX) \ 1334 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 1335 1336/* Subsequent bits are available for the target to use. */ 1337#define SYMBOL_FLAG_MACH_DEP_SHIFT 9 1338#define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 1339 1340/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 1341 structure to which the symbol belongs, or NULL if it has not been 1342 assigned a block. */ 1343#define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 1344 1345/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 1346 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 1347 RTX has not yet been assigned to a block, or it has not been given an 1348 offset within that block. */ 1349#define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 1350 1351/* Define a macro to look for REG_INC notes, 1352 but save time on machines where they never exist. */ 1353 1354#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) 1355#define FIND_REG_INC_NOTE(INSN, REG) \ 1356 ((REG) != NULL_RTX && REG_P ((REG)) \ 1357 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 1358 : find_reg_note ((INSN), REG_INC, (REG))) 1359#else 1360#define FIND_REG_INC_NOTE(INSN, REG) 0 1361#endif 1362 1363/* Indicate whether the machine has any sort of auto increment addressing. 1364 If not, we can avoid checking for REG_INC notes. */ 1365 1366#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) 1367#define AUTO_INC_DEC 1368#endif 1369 1370#ifndef HAVE_PRE_INCREMENT 1371#define HAVE_PRE_INCREMENT 0 1372#endif 1373 1374#ifndef HAVE_PRE_DECREMENT 1375#define HAVE_PRE_DECREMENT 0 1376#endif 1377 1378#ifndef HAVE_POST_INCREMENT 1379#define HAVE_POST_INCREMENT 0 1380#endif 1381 1382#ifndef HAVE_POST_DECREMENT 1383#define HAVE_POST_DECREMENT 0 1384#endif 1385 1386#ifndef HAVE_POST_MODIFY_DISP 1387#define HAVE_POST_MODIFY_DISP 0 1388#endif 1389 1390#ifndef HAVE_POST_MODIFY_REG 1391#define HAVE_POST_MODIFY_REG 0 1392#endif 1393 1394#ifndef HAVE_PRE_MODIFY_DISP 1395#define HAVE_PRE_MODIFY_DISP 0 1396#endif 1397 1398#ifndef HAVE_PRE_MODIFY_REG 1399#define HAVE_PRE_MODIFY_REG 0 1400#endif 1401 1402 1403/* Some architectures do not have complete pre/post increment/decrement 1404 instruction sets, or only move some modes efficiently. These macros 1405 allow us to tune autoincrement generation. */ 1406 1407#ifndef USE_LOAD_POST_INCREMENT 1408#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1409#endif 1410 1411#ifndef USE_LOAD_POST_DECREMENT 1412#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1413#endif 1414 1415#ifndef USE_LOAD_PRE_INCREMENT 1416#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1417#endif 1418 1419#ifndef USE_LOAD_PRE_DECREMENT 1420#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1421#endif 1422 1423#ifndef USE_STORE_POST_INCREMENT 1424#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1425#endif 1426 1427#ifndef USE_STORE_POST_DECREMENT 1428#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1429#endif 1430 1431#ifndef USE_STORE_PRE_INCREMENT 1432#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1433#endif 1434 1435#ifndef USE_STORE_PRE_DECREMENT 1436#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1437#endif 1438 1439/* Nonzero when we are generating CONCATs. */ 1440extern int generating_concat_p; 1441 1442/* Nonzero when we are expanding trees to RTL. */ 1443extern int currently_expanding_to_rtl; 1444 1445/* Generally useful functions. */ 1446 1447/* In expmed.c */ 1448extern int ceil_log2 (unsigned HOST_WIDE_INT); 1449 1450/* In builtins.c */ 1451extern rtx expand_builtin_expect_jump (tree, rtx, rtx); 1452 1453/* In explow.c */ 1454extern void set_stack_check_libfunc (rtx); 1455extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); 1456extern rtx plus_constant (rtx, HOST_WIDE_INT); 1457 1458/* In emit-rtl.c */ 1459extern rtvec gen_rtvec (int, ...); 1460extern rtx copy_insn_1 (rtx); 1461extern rtx copy_insn (rtx); 1462extern rtx gen_int_mode (HOST_WIDE_INT, enum machine_mode); 1463extern rtx emit_copy_of_insn_after (rtx, rtx); 1464extern void set_reg_attrs_from_mem (rtx, rtx); 1465extern void set_mem_attrs_from_reg (rtx, rtx); 1466extern void set_reg_attrs_for_parm (rtx, rtx); 1467extern int mem_expr_equal_p (tree, tree); 1468 1469/* In rtl.c */ 1470extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 1471#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 1472 1473extern rtvec rtvec_alloc (int); 1474extern rtx copy_rtx (rtx); 1475extern void dump_rtx_statistics (void); 1476 1477/* In emit-rtl.c */ 1478extern rtx copy_rtx_if_shared (rtx); 1479 1480/* In rtl.c */ 1481extern unsigned int rtx_size (rtx); 1482extern rtx shallow_copy_rtx_stat (rtx MEM_STAT_DECL); 1483#define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 1484extern int rtx_equal_p (rtx, rtx); 1485 1486/* In emit-rtl.c */ 1487extern rtvec gen_rtvec_v (int, rtx *); 1488extern rtx gen_reg_rtx (enum machine_mode); 1489extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); 1490extern rtx gen_label_rtx (void); 1491extern rtx gen_lowpart_common (enum machine_mode, rtx); 1492 1493/* In cse.c */ 1494extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); 1495 1496/* In emit-rtl.c */ 1497extern rtx gen_highpart (enum machine_mode, rtx); 1498extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); 1499extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); 1500 1501/* In emit-rtl.c */ 1502extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); 1503extern int subreg_lowpart_p (rtx); 1504extern unsigned int subreg_lowpart_offset (enum machine_mode, 1505 enum machine_mode); 1506extern unsigned int subreg_highpart_offset (enum machine_mode, 1507 enum machine_mode); 1508extern rtx make_safe_from (rtx, rtx); 1509extern rtx convert_memory_address (enum machine_mode, rtx); 1510extern rtx get_insns (void); 1511extern const char *get_insn_name (int); 1512extern rtx get_last_insn (void); 1513extern rtx get_last_insn_anywhere (void); 1514extern rtx get_first_nonnote_insn (void); 1515extern rtx get_last_nonnote_insn (void); 1516extern void start_sequence (void); 1517extern void push_to_sequence (rtx); 1518extern void end_sequence (void); 1519extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 1520 enum machine_mode); 1521 1522/* In loop-iv.c */ 1523 1524extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode); 1525 1526/* In varasm.c */ 1527extern rtx force_const_mem (enum machine_mode, rtx); 1528 1529/* In varasm.c */ 1530 1531struct function; 1532extern rtx get_pool_constant (rtx); 1533extern rtx get_pool_constant_mark (rtx, bool *); 1534extern enum machine_mode get_pool_mode (rtx); 1535extern rtx simplify_subtraction (rtx); 1536 1537/* In function.c */ 1538extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); 1539extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int); 1540extern rtx assign_stack_temp_for_type (enum machine_mode, 1541 HOST_WIDE_INT, int, tree); 1542extern rtx assign_temp (tree, int, int, int); 1543 1544/* In emit-rtl.c */ 1545extern rtx emit_insn_before (rtx, rtx); 1546extern rtx emit_insn_before_noloc (rtx, rtx); 1547extern rtx emit_insn_before_setloc (rtx, rtx, int); 1548extern rtx emit_jump_insn_before (rtx, rtx); 1549extern rtx emit_jump_insn_before_noloc (rtx, rtx); 1550extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); 1551extern rtx emit_call_insn_before (rtx, rtx); 1552extern rtx emit_call_insn_before_noloc (rtx, rtx); 1553extern rtx emit_call_insn_before_setloc (rtx, rtx, int); 1554extern rtx emit_barrier_before (rtx); 1555extern rtx emit_label_before (rtx, rtx); 1556extern rtx emit_note_before (int, rtx); 1557extern rtx emit_insn_after (rtx, rtx); 1558extern rtx emit_insn_after_noloc (rtx, rtx); 1559extern rtx emit_insn_after_setloc (rtx, rtx, int); 1560extern rtx emit_jump_insn_after (rtx, rtx); 1561extern rtx emit_jump_insn_after_noloc (rtx, rtx); 1562extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); 1563extern rtx emit_call_insn_after (rtx, rtx); 1564extern rtx emit_call_insn_after_noloc (rtx, rtx); 1565extern rtx emit_call_insn_after_setloc (rtx, rtx, int); 1566extern rtx emit_barrier_after (rtx); 1567extern rtx emit_label_after (rtx, rtx); 1568extern rtx emit_note_after (int, rtx); 1569extern rtx emit_note_copy_after (rtx, rtx); 1570extern rtx emit_insn (rtx); 1571extern rtx emit_jump_insn (rtx); 1572extern rtx emit_call_insn (rtx); 1573extern rtx emit_label (rtx); 1574extern rtx emit_barrier (void); 1575extern rtx emit_note (int); 1576extern rtx emit_note_copy (rtx); 1577extern rtx emit_line_note (location_t); 1578extern rtx make_insn_raw (rtx); 1579extern rtx make_jump_insn_raw (rtx); 1580extern void add_function_usage_to (rtx, rtx); 1581extern rtx last_call_insn (void); 1582extern rtx previous_insn (rtx); 1583extern rtx next_insn (rtx); 1584extern rtx prev_nonnote_insn (rtx); 1585extern rtx next_nonnote_insn (rtx); 1586extern rtx prev_real_insn (rtx); 1587extern rtx next_real_insn (rtx); 1588extern rtx prev_active_insn (rtx); 1589extern rtx next_active_insn (rtx); 1590extern int active_insn_p (rtx); 1591extern rtx prev_label (rtx); 1592extern rtx next_label (rtx); 1593extern rtx skip_consecutive_labels (rtx); 1594extern rtx next_cc0_user (rtx); 1595extern rtx prev_cc0_setter (rtx); 1596 1597/* In cfglayout.c */ 1598extern int insn_line (rtx); 1599extern const char * insn_file (rtx); 1600extern int locator_line (int); 1601extern const char * locator_file (int); 1602extern int prologue_locator, epilogue_locator; 1603 1604/* In jump.c */ 1605extern enum rtx_code reverse_condition (enum rtx_code); 1606extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 1607extern enum rtx_code swap_condition (enum rtx_code); 1608extern enum rtx_code unsigned_condition (enum rtx_code); 1609extern enum rtx_code signed_condition (enum rtx_code); 1610extern void mark_jump_label (rtx, rtx, int); 1611extern unsigned int cleanup_barriers (void); 1612 1613/* In jump.c */ 1614extern bool squeeze_notes (rtx *, rtx *); 1615extern rtx delete_related_insns (rtx); 1616extern void delete_jump (rtx); 1617extern rtx get_label_before (rtx); 1618extern rtx get_label_after (rtx); 1619extern rtx follow_jumps (rtx); 1620 1621/* In recog.c */ 1622extern rtx *find_constant_term_loc (rtx *); 1623 1624/* In emit-rtl.c */ 1625extern rtx try_split (rtx, rtx, int); 1626extern int split_branch_probability; 1627 1628/* In unknown file */ 1629extern rtx split_insns (rtx, rtx); 1630 1631/* In simplify-rtx.c */ 1632extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode, 1633 rtx, enum machine_mode); 1634extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, 1635 enum machine_mode); 1636extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode, 1637 rtx, rtx); 1638extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, 1639 rtx); 1640extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, 1641 enum machine_mode, rtx, rtx, rtx); 1642extern rtx simplify_const_relational_operation (enum rtx_code, 1643 enum machine_mode, rtx, rtx); 1644extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, 1645 enum machine_mode, rtx, rtx); 1646extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); 1647extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, 1648 enum machine_mode); 1649extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, 1650 enum machine_mode, rtx, rtx, rtx); 1651extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, 1652 enum machine_mode, rtx, rtx); 1653extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, 1654 unsigned int); 1655extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, 1656 unsigned int); 1657extern rtx simplify_replace_rtx (rtx, rtx, rtx); 1658extern rtx simplify_rtx (rtx); 1659extern rtx avoid_constant_pool_reference (rtx); 1660extern bool constant_pool_reference_p (rtx x); 1661extern bool mode_signbit_p (enum machine_mode, rtx); 1662 1663/* In regclass.c */ 1664extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 1665 bool); 1666 1667/* In emit-rtl.c */ 1668extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 1669 1670/* Functions in rtlanal.c */ 1671 1672/* Single set is implemented as macro for performance reasons. */ 1673#define single_set(I) (INSN_P (I) \ 1674 ? (GET_CODE (PATTERN (I)) == SET \ 1675 ? PATTERN (I) : single_set_1 (I)) \ 1676 : NULL_RTX) 1677#define single_set_1(I) single_set_2 (I, PATTERN (I)) 1678 1679/* Structure used for passing data to REPLACE_LABEL. */ 1680typedef struct replace_label_data 1681{ 1682 rtx r1; 1683 rtx r2; 1684 bool update_label_nuses; 1685} replace_label_data; 1686 1687extern int rtx_addr_can_trap_p (rtx); 1688extern bool nonzero_address_p (rtx); 1689extern int rtx_unstable_p (rtx); 1690extern int rtx_varies_p (rtx, int); 1691extern int rtx_addr_varies_p (rtx, int); 1692extern HOST_WIDE_INT get_integer_term (rtx); 1693extern rtx get_related_value (rtx); 1694extern int reg_mentioned_p (rtx, rtx); 1695extern int count_occurrences (rtx, rtx, int); 1696extern int reg_referenced_p (rtx, rtx); 1697extern int reg_used_between_p (rtx, rtx, rtx); 1698extern int reg_set_between_p (rtx, rtx, rtx); 1699extern int commutative_operand_precedence (rtx); 1700extern int swap_commutative_operands_p (rtx, rtx); 1701extern int modified_between_p (rtx, rtx, rtx); 1702extern int no_labels_between_p (rtx, rtx); 1703extern int modified_in_p (rtx, rtx); 1704extern int reg_set_p (rtx, rtx); 1705extern rtx single_set_2 (rtx, rtx); 1706extern int multiple_sets (rtx); 1707extern int set_noop_p (rtx); 1708extern int noop_move_p (rtx); 1709extern rtx find_last_value (rtx, rtx *, rtx, int); 1710extern int refers_to_regno_p (unsigned int, unsigned int, rtx, rtx *); 1711extern int reg_overlap_mentioned_p (rtx, rtx); 1712extern rtx set_of (rtx, rtx); 1713extern void note_stores (rtx, void (*) (rtx, rtx, void *), void *); 1714extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 1715extern int dead_or_set_p (rtx, rtx); 1716extern int dead_or_set_regno_p (rtx, unsigned int); 1717extern rtx find_reg_note (rtx, enum reg_note, rtx); 1718extern rtx find_regno_note (rtx, enum reg_note, unsigned int); 1719extern rtx find_reg_equal_equiv_note (rtx); 1720extern int find_reg_fusage (rtx, enum rtx_code, rtx); 1721extern int find_regno_fusage (rtx, enum rtx_code, unsigned int); 1722extern int pure_call_p (rtx); 1723extern void remove_note (rtx, rtx); 1724extern int side_effects_p (rtx); 1725extern int volatile_refs_p (rtx); 1726extern int volatile_insn_p (rtx); 1727extern int may_trap_p (rtx); 1728extern int may_trap_after_code_motion_p (rtx); 1729extern int may_trap_or_fault_p (rtx); 1730extern int inequality_comparisons_p (rtx); 1731extern rtx replace_rtx (rtx, rtx, rtx); 1732extern int replace_label (rtx *, void *); 1733extern int rtx_referenced_p (rtx, rtx); 1734extern bool tablejump_p (rtx, rtx *, rtx *); 1735extern int computed_jump_p (rtx); 1736typedef int (*rtx_function) (rtx *, void *); 1737extern int for_each_rtx (rtx *, rtx_function, void *); 1738extern rtx regno_use_in (unsigned int, rtx); 1739extern int auto_inc_p (rtx); 1740extern int in_expr_list_p (rtx, rtx); 1741extern void remove_node_from_expr_list (rtx, rtx *); 1742extern int loc_mentioned_in_p (rtx *, rtx); 1743extern rtx find_first_parameter_load (rtx, rtx); 1744extern bool keep_with_call_p (rtx); 1745extern bool label_is_jump_target_p (rtx, rtx); 1746extern int insn_rtx_cost (rtx); 1747 1748/* Given an insn and condition, return a canonical description of 1749 the test being made. */ 1750extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int); 1751 1752/* Given a JUMP_INSN, return a canonical description of the test 1753 being made. */ 1754extern rtx get_condition (rtx, rtx *, int, int); 1755 1756 1757/* flow.c */ 1758 1759extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT); 1760 1761/* lists.c */ 1762 1763void free_EXPR_LIST_list (rtx *); 1764void free_INSN_LIST_list (rtx *); 1765void free_EXPR_LIST_node (rtx); 1766void free_INSN_LIST_node (rtx); 1767rtx alloc_INSN_LIST (rtx, rtx); 1768rtx alloc_EXPR_LIST (int, rtx, rtx); 1769void free_DEPS_LIST_list (rtx *); 1770rtx alloc_DEPS_LIST (rtx, rtx, int); 1771void remove_free_DEPS_LIST_elem (rtx, rtx *); 1772void remove_free_INSN_LIST_elem (rtx, rtx *); 1773rtx remove_list_elem (rtx, rtx *); 1774rtx copy_DEPS_LIST_list (rtx); 1775 1776/* regclass.c */ 1777 1778/* Maximum number of parallel sets and clobbers in any insn in this fn. 1779 Always at least 3, since the combiner could put that many together 1780 and we want this to remain correct for all the remaining passes. */ 1781 1782extern int max_parallel; 1783 1784/* Free up register info memory. */ 1785extern void free_reg_info (void); 1786 1787/* recog.c */ 1788extern int asm_noperands (rtx); 1789extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 1790 enum machine_mode *); 1791 1792extern enum reg_class reg_preferred_class (int); 1793extern enum reg_class reg_alternate_class (int); 1794 1795extern void split_all_insns (int); 1796extern unsigned int split_all_insns_noflow (void); 1797 1798#define MAX_SAVED_CONST_INT 64 1799extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 1800 1801#define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 1802#define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 1803#define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 1804#define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 1805extern GTY(()) rtx const_true_rtx; 1806 1807extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; 1808 1809/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 1810 same as VOIDmode. */ 1811 1812#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 1813 1814/* Likewise, for the constants 1 and 2. */ 1815 1816#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 1817#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 1818 1819/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 1820 is used to represent the frame pointer. This is because the 1821 hard frame pointer and the automatic variables are separated by an amount 1822 that cannot be determined until after register allocation. We can assume 1823 that in this case ELIMINABLE_REGS will be defined, one action of which 1824 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 1825#ifndef HARD_FRAME_POINTER_REGNUM 1826#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 1827#endif 1828 1829/* Index labels for global_rtl. */ 1830enum global_rtl_index 1831{ 1832 GR_PC, 1833 GR_CC0, 1834 GR_STACK_POINTER, 1835 GR_FRAME_POINTER, 1836/* For register elimination to work properly these hard_frame_pointer_rtx, 1837 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 1838 the same register. */ 1839#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1840 GR_ARG_POINTER = GR_FRAME_POINTER, 1841#endif 1842#if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM 1843 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 1844#else 1845 GR_HARD_FRAME_POINTER, 1846#endif 1847#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 1848#if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1849 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 1850#else 1851 GR_ARG_POINTER, 1852#endif 1853#endif 1854 GR_VIRTUAL_INCOMING_ARGS, 1855 GR_VIRTUAL_STACK_ARGS, 1856 GR_VIRTUAL_STACK_DYNAMIC, 1857 GR_VIRTUAL_OUTGOING_ARGS, 1858 GR_VIRTUAL_CFA, 1859 1860 GR_MAX 1861}; 1862 1863/* Pointers to standard pieces of rtx are stored here. */ 1864extern GTY(()) rtx global_rtl[GR_MAX]; 1865 1866/* Standard pieces of rtx, to be substituted directly into things. */ 1867#define pc_rtx (global_rtl[GR_PC]) 1868#define cc0_rtx (global_rtl[GR_CC0]) 1869 1870/* All references to certain hard regs, except those created 1871 by allocating pseudo regs into them (when that's possible), 1872 go through these unique rtx objects. */ 1873#define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 1874#define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 1875#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 1876#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 1877 1878extern GTY(()) rtx pic_offset_table_rtx; 1879extern GTY(()) rtx static_chain_rtx; 1880extern GTY(()) rtx static_chain_incoming_rtx; 1881extern GTY(()) rtx return_address_pointer_rtx; 1882 1883/* Include the RTL generation functions. */ 1884 1885#ifndef GENERATOR_FILE 1886#include "genrtl.h" 1887#ifndef USE_MAPPED_LOCATION 1888#undef gen_rtx_ASM_OPERANDS 1889#define gen_rtx_ASM_OPERANDS(MODE, ARG0, ARG1, ARG2, ARG3, ARG4, LOC) \ 1890 gen_rtx_fmt_ssiEEsi (ASM_OPERANDS, (MODE), (ARG0), (ARG1), (ARG2), (ARG3), (ARG4), (LOC).file, (LOC).line) 1891#endif 1892#endif 1893 1894/* There are some RTL codes that require special attention; the 1895 generation functions included above do the raw handling. If you 1896 add to this list, modify special_rtx in gengenrtl.c as well. */ 1897 1898extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); 1899extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); 1900extern rtx gen_raw_REG (enum machine_mode, int); 1901extern rtx gen_rtx_REG (enum machine_mode, unsigned); 1902extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); 1903extern rtx gen_rtx_MEM (enum machine_mode, rtx); 1904 1905#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 1906 1907/* Virtual registers are used during RTL generation to refer to locations into 1908 the stack frame when the actual location isn't known until RTL generation 1909 is complete. The routine instantiate_virtual_regs replaces these with 1910 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 1911 a constant. */ 1912 1913#define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 1914 1915/* This points to the first word of the incoming arguments passed on the stack, 1916 either by the caller or by the callee when pretending it was passed by the 1917 caller. */ 1918 1919#define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 1920 1921#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 1922 1923/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 1924 variable on the stack. Otherwise, it points to the first variable on 1925 the stack. */ 1926 1927#define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 1928 1929#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 1930 1931/* This points to the location of dynamically-allocated memory on the stack 1932 immediately after the stack pointer has been adjusted by the amount 1933 desired. */ 1934 1935#define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 1936 1937#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 1938 1939/* This points to the location in the stack at which outgoing arguments should 1940 be written when the stack is pre-pushed (arguments pushed using push 1941 insns always use sp). */ 1942 1943#define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 1944 1945#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 1946 1947/* This points to the Canonical Frame Address of the function. This 1948 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 1949 but is calculated relative to the arg pointer for simplicity; the 1950 frame pointer nor stack pointer are necessarily fixed relative to 1951 the CFA until after reload. */ 1952 1953#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 1954 1955#define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 1956 1957#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 1958 1959/* Nonzero if REGNUM is a pointer into the stack frame. */ 1960#define REGNO_PTR_FRAME_P(REGNUM) \ 1961 ((REGNUM) == STACK_POINTER_REGNUM \ 1962 || (REGNUM) == FRAME_POINTER_REGNUM \ 1963 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 1964 || (REGNUM) == ARG_POINTER_REGNUM \ 1965 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 1966 && (REGNUM) <= LAST_VIRTUAL_REGISTER)) 1967 1968/* REGNUM never really appearing in the INSN stream. */ 1969#define INVALID_REGNUM (~(unsigned int) 0) 1970 1971extern rtx output_constant_def (tree, int); 1972extern rtx lookup_constant_def (tree); 1973 1974/* Nonzero after the second flow pass has completed. 1975 Set to 1 or 0 by toplev.c */ 1976extern int flow2_completed; 1977 1978/* Nonzero after end of reload pass. 1979 Set to 1 or 0 by reload1.c. */ 1980 1981extern int reload_completed; 1982 1983/* Nonzero after thread_prologue_and_epilogue_insns has run. */ 1984extern int epilogue_completed; 1985 1986/* Set to 1 while reload_as_needed is operating. 1987 Required by some machines to handle any generated moves differently. */ 1988 1989extern int reload_in_progress; 1990 1991#ifdef STACK_REGS 1992/* Nonzero after end of regstack pass. 1993 Set to 1 or 0 by reg-stack.c. */ 1994extern int regstack_completed; 1995#endif 1996 1997/* If this is nonzero, we do not bother generating VOLATILE 1998 around volatile memory references, and we are willing to 1999 output indirect addresses. If cse is to follow, we reject 2000 indirect addresses so a useful potential cse is generated; 2001 if it is used only once, instruction combination will produce 2002 the same indirect address eventually. */ 2003extern int cse_not_expected; 2004 2005/* Set to nonzero before life analysis to indicate that it is unsafe to 2006 generate any new pseudo registers. */ 2007extern int no_new_pseudos; 2008 2009/* Translates rtx code to tree code, for those codes needed by 2010 REAL_ARITHMETIC. The function returns an int because the caller may not 2011 know what `enum tree_code' means. */ 2012 2013extern int rtx_to_tree_code (enum rtx_code); 2014 2015/* In cse.c */ 2016extern int delete_trivially_dead_insns (rtx, int); 2017extern int cse_main (rtx, int); 2018extern int exp_equiv_p (rtx, rtx, int, bool); 2019extern unsigned hash_rtx (rtx x, enum machine_mode, int *, int *, bool); 2020 2021/* In jump.c */ 2022extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 2023extern int condjump_p (rtx); 2024extern int any_condjump_p (rtx); 2025extern int any_uncondjump_p (rtx); 2026extern rtx pc_set (rtx); 2027extern rtx condjump_label (rtx); 2028extern int simplejump_p (rtx); 2029extern int returnjump_p (rtx); 2030extern int onlyjump_p (rtx); 2031extern int only_sets_cc0_p (rtx); 2032extern int sets_cc0_p (rtx); 2033extern int invert_jump_1 (rtx, rtx); 2034extern int invert_jump (rtx, rtx, int); 2035extern int rtx_renumbered_equal_p (rtx, rtx); 2036extern int true_regnum (rtx); 2037extern unsigned int reg_or_subregno (rtx); 2038extern int redirect_jump_1 (rtx, rtx); 2039extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 2040extern int redirect_jump (rtx, rtx, int); 2041extern void rebuild_jump_labels (rtx); 2042extern rtx reversed_comparison (rtx, enum machine_mode); 2043extern enum rtx_code reversed_comparison_code (rtx, rtx); 2044extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, 2045 rtx, rtx, rtx); 2046extern void delete_for_peephole (rtx, rtx); 2047extern int condjump_in_parallel_p (rtx); 2048extern unsigned int purge_line_number_notes (void); 2049 2050/* In emit-rtl.c. */ 2051extern int max_reg_num (void); 2052extern int max_label_num (void); 2053extern int get_first_label_num (void); 2054extern void maybe_set_first_label_num (rtx); 2055extern void delete_insns_since (rtx); 2056extern void mark_reg_pointer (rtx, int); 2057extern void mark_user_reg (rtx); 2058extern void reset_used_flags (rtx); 2059extern void set_used_flags (rtx); 2060extern void reorder_insns (rtx, rtx, rtx); 2061extern void reorder_insns_nobb (rtx, rtx, rtx); 2062extern int get_max_uid (void); 2063extern int in_sequence_p (void); 2064extern void force_next_line_note (void); 2065extern void init_emit (void); 2066extern void init_emit_once (int); 2067extern void push_topmost_sequence (void); 2068extern void pop_topmost_sequence (void); 2069extern void set_new_first_and_last_insn (rtx, rtx); 2070extern unsigned int unshare_all_rtl (void); 2071extern void unshare_all_rtl_again (rtx); 2072extern void unshare_all_rtl_in_chain (rtx); 2073extern void verify_rtl_sharing (void); 2074extern void set_first_insn (rtx); 2075extern void set_last_insn (rtx); 2076extern void link_cc0_insns (rtx); 2077extern void add_insn (rtx); 2078extern void add_insn_before (rtx, rtx); 2079extern void add_insn_after (rtx, rtx); 2080extern void remove_insn (rtx); 2081extern void emit_insn_after_with_line_notes (rtx, rtx, rtx); 2082extern rtx emit (rtx); 2083extern void renumber_insns (void); 2084extern rtx delete_insn (rtx); 2085extern rtx entry_of_function (void); 2086extern void emit_insn_at_entry (rtx); 2087extern void delete_insn_chain (rtx, rtx); 2088extern rtx unlink_insn_chain (rtx, rtx); 2089extern rtx delete_insn_and_edges (rtx); 2090extern void delete_insn_chain_and_edges (rtx, rtx); 2091extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); 2092extern rtx gen_const_mem (enum machine_mode, rtx); 2093extern rtx gen_frame_mem (enum machine_mode, rtx); 2094extern rtx gen_tmp_stack_mem (enum machine_mode, rtx); 2095extern bool validate_subreg (enum machine_mode, enum machine_mode, 2096 rtx, unsigned int); 2097 2098/* In combine.c */ 2099extern unsigned int extended_count (rtx, enum machine_mode, int); 2100extern rtx remove_death (unsigned int, rtx); 2101extern void dump_combine_stats (FILE *); 2102extern void dump_combine_total_stats (FILE *); 2103 2104/* In sched-vis.c. */ 2105extern void print_rtl_slim_with_bb (FILE *, rtx, int); 2106extern void dump_insn_slim (FILE *f, rtx x); 2107extern void debug_insn_slim (rtx x); 2108 2109/* In sched-rgn.c. */ 2110extern void schedule_insns (void); 2111 2112/* In sched-ebb.c. */ 2113extern void schedule_ebbs (void); 2114 2115/* In haifa-sched.c. */ 2116extern void fix_sched_param (const char *, const char *); 2117 2118/* In print-rtl.c */ 2119extern const char *print_rtx_head; 2120extern void debug_rtx (rtx); 2121extern void debug_rtx_list (rtx, int); 2122extern void debug_rtx_range (rtx, rtx); 2123extern rtx debug_rtx_find (rtx, int); 2124extern void print_mem_expr (FILE *, tree); 2125extern void print_rtl (FILE *, rtx); 2126extern void print_simple_rtl (FILE *, rtx); 2127extern int print_rtl_single (FILE *, rtx); 2128extern void print_inline_rtx (FILE *, rtx, int); 2129 2130/* In bt-load.c */ 2131extern void branch_target_load_optimize (bool); 2132 2133/* In function.c */ 2134extern void reposition_prologue_and_epilogue_notes (rtx); 2135extern void thread_prologue_and_epilogue_insns (rtx); 2136extern int prologue_epilogue_contains (rtx); 2137extern int sibcall_epilogue_contains (rtx); 2138extern void mark_temp_addr_taken (rtx); 2139extern void update_temp_slot_address (rtx, rtx); 2140 2141/* In stmt.c */ 2142extern void expand_null_return (void); 2143extern void expand_naked_return (void); 2144extern void emit_jump (rtx); 2145 2146/* In expr.c */ 2147extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 2148 unsigned int, int); 2149 2150/* In flow.c */ 2151extern void delete_dead_jumptables (void); 2152extern void print_rtl_with_bb (FILE *, rtx); 2153extern void dump_flow_info (FILE *, int); 2154 2155/* In expmed.c */ 2156extern void init_expmed (void); 2157extern void expand_inc (rtx, rtx); 2158extern void expand_dec (rtx, rtx); 2159 2160/* In gcse.c */ 2161extern bool can_copy_p (enum machine_mode); 2162extern rtx fis_get_condition (rtx); 2163 2164/* In global.c */ 2165extern void mark_elimination (int, int); 2166extern void dump_global_regs (FILE *); 2167#ifdef HARD_CONST 2168/* Yes, this ifdef is silly, but HARD_REG_SET is not always defined. */ 2169extern void retry_global_alloc (int, HARD_REG_SET); 2170#endif 2171extern void build_insn_chain (rtx); 2172 2173/* In regclass.c */ 2174extern int reg_classes_intersect_p (enum reg_class, enum reg_class); 2175extern int reg_class_subset_p (enum reg_class, enum reg_class); 2176extern void globalize_reg (int); 2177extern void init_reg_modes_once (void); 2178extern void init_regs (void); 2179extern void init_fake_stack_mems (void); 2180extern void init_reg_sets (void); 2181extern void regclass_init (void); 2182extern void regclass (rtx, int); 2183extern void reg_scan (rtx, unsigned int); 2184extern void fix_register (const char *, int, int); 2185extern void init_subregs_of_mode (void); 2186extern void record_subregs_of_mode (rtx); 2187#ifdef HARD_CONST 2188extern void cannot_change_mode_set_regs (HARD_REG_SET *, 2189 enum machine_mode, unsigned int); 2190#endif 2191extern bool invalid_mode_change_p (unsigned int, enum reg_class, 2192 enum machine_mode); 2193 2194/* In reorg.c */ 2195extern void dbr_schedule (rtx); 2196 2197/* In local-alloc.c */ 2198extern void dump_local_alloc (FILE *); 2199 2200/* In reload1.c */ 2201extern int function_invariant_p (rtx); 2202 2203/* In calls.c */ 2204enum libcall_type 2205{ 2206 LCT_NORMAL = 0, 2207 LCT_CONST = 1, 2208 LCT_PURE = 2, 2209 LCT_CONST_MAKE_BLOCK = 3, 2210 LCT_PURE_MAKE_BLOCK = 4, 2211 LCT_NORETURN = 5, 2212 LCT_THROW = 6, 2213 LCT_RETURNS_TWICE = 7 2214}; 2215 2216extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, 2217 ...); 2218extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 2219 enum machine_mode, int, ...); 2220 2221/* In varasm.c */ 2222extern void init_varasm_once (void); 2223extern enum tls_model decl_default_tls_model (tree); 2224 2225/* In rtl.c */ 2226extern void traverse_md_constants (int (*) (void **, void *), void *); 2227struct md_constant { char *name, *value; }; 2228 2229/* In read-rtl.c */ 2230extern int read_skip_spaces (FILE *); 2231extern bool read_rtx (FILE *, rtx *, int *); 2232extern void copy_rtx_ptr_loc (const void *, const void *); 2233extern void print_rtx_ptr_loc (const void *); 2234extern const char *join_c_conditions (const char *, const char *); 2235extern void print_c_condition (const char *); 2236extern const char *read_rtx_filename; 2237extern int read_rtx_lineno; 2238 2239/* In alias.c */ 2240extern void clear_reg_alias_info (rtx); 2241extern rtx canon_rtx (rtx); 2242extern int true_dependence (rtx, enum machine_mode, rtx, int (*)(rtx, int)); 2243extern rtx get_addr (rtx); 2244extern int canon_true_dependence (rtx, enum machine_mode, rtx, rtx, 2245 int (*)(rtx, int)); 2246extern int read_dependence (rtx, rtx); 2247extern int anti_dependence (rtx, rtx); 2248extern int output_dependence (rtx, rtx); 2249extern void init_alias_once (void); 2250extern void init_alias_analysis (void); 2251extern void end_alias_analysis (void); 2252extern bool memory_modified_in_insn_p (rtx, rtx); 2253extern rtx find_base_term (rtx); 2254extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); 2255extern rtx get_reg_known_value (unsigned int); 2256extern bool get_reg_known_equiv_p (unsigned int); 2257 2258#ifdef STACK_REGS 2259extern int stack_regs_mentioned (rtx insn); 2260#endif 2261 2262/* In toplev.c */ 2263extern GTY(()) rtx stack_limit_rtx; 2264 2265/* In predict.c */ 2266extern void invert_br_probabilities (rtx); 2267extern bool expensive_function_p (int); 2268/* In tracer.c */ 2269extern void tracer (unsigned int); 2270 2271/* In var-tracking.c */ 2272extern unsigned int variable_tracking_main (void); 2273 2274/* In stor-layout.c. */ 2275extern void get_mode_bounds (enum machine_mode, int, enum machine_mode, 2276 rtx *, rtx *); 2277 2278/* In loop-unswitch.c */ 2279extern rtx reversed_condition (rtx); 2280extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); 2281 2282/* In loop-iv.c */ 2283extern rtx canon_condition (rtx); 2284extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *); 2285 2286struct rtl_hooks 2287{ 2288 rtx (*gen_lowpart) (enum machine_mode, rtx); 2289 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx); 2290 rtx (*reg_nonzero_bits) (rtx, enum machine_mode, rtx, enum machine_mode, 2291 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 2292 rtx (*reg_num_sign_bit_copies) (rtx, enum machine_mode, rtx, enum machine_mode, 2293 unsigned int, unsigned int *); 2294 bool (*reg_truncated_to_mode) (enum machine_mode, rtx); 2295 2296 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 2297}; 2298 2299/* Each pass can provide its own. */ 2300extern struct rtl_hooks rtl_hooks; 2301 2302/* ... but then it has to restore these. */ 2303extern const struct rtl_hooks general_rtl_hooks; 2304 2305/* Keep this for the nonce. */ 2306#define gen_lowpart rtl_hooks.gen_lowpart 2307 2308#endif /* ! GCC_RTL_H */ 2309