1/* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987-2015 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING3. If not see 18<http://www.gnu.org/licenses/>. */ 19 20#ifndef GCC_RTL_H 21#define GCC_RTL_H 22 23#include "statistics.h" 24#include "machmode.h" 25#include "input.h" 26#include "real.h" 27#include "vec.h" 28#include "fixed-value.h" 29#include "alias.h" 30#include "hashtab.h" 31#include "wide-int.h" 32#include "flags.h" 33#include "is-a.h" 34 35/* Value used by some passes to "recognize" noop moves as valid 36 instructions. */ 37#define NOOP_MOVE_INSN_CODE INT_MAX 38 39/* Register Transfer Language EXPRESSIONS CODES */ 40 41#define RTX_CODE enum rtx_code 42enum rtx_code { 43 44#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , 45#include "rtl.def" /* rtl expressions are documented here */ 46#undef DEF_RTL_EXPR 47 48 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for 49 NUM_RTX_CODE. 50 Assumes default enum value assignment. */ 51 52/* The cast here, saves many elsewhere. */ 53#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 54 55/* Similar, but since generator files get more entries... */ 56#ifdef GENERATOR_FILE 57# define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND) 58#endif 59 60/* Register Transfer Language EXPRESSIONS CODE CLASSES */ 61 62enum rtx_class { 63 /* We check bit 0-1 of some rtx class codes in the predicates below. */ 64 65 /* Bit 0 = comparison if 0, arithmetic is 1 66 Bit 1 = 1 if commutative. */ 67 RTX_COMPARE, /* 0 */ 68 RTX_COMM_COMPARE, 69 RTX_BIN_ARITH, 70 RTX_COMM_ARITH, 71 72 /* Must follow the four preceding values. */ 73 RTX_UNARY, /* 4 */ 74 75 RTX_EXTRA, 76 RTX_MATCH, 77 RTX_INSN, 78 79 /* Bit 0 = 1 if constant. */ 80 RTX_OBJ, /* 8 */ 81 RTX_CONST_OBJ, 82 83 RTX_TERNARY, 84 RTX_BITFIELD_OPS, 85 RTX_AUTOINC 86}; 87 88#define RTX_OBJ_MASK (~1) 89#define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) 90#define RTX_COMPARE_MASK (~1) 91#define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) 92#define RTX_ARITHMETIC_MASK (~1) 93#define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) 94#define RTX_BINARY_MASK (~3) 95#define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) 96#define RTX_COMMUTATIVE_MASK (~2) 97#define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) 98#define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) 99 100extern const unsigned char rtx_length[NUM_RTX_CODE]; 101#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 102 103extern const char * const rtx_name[NUM_RTX_CODE]; 104#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 105 106extern const char * const rtx_format[NUM_RTX_CODE]; 107#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 108 109extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 110#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 111 112/* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN 113 and NEXT_INSN fields). */ 114#define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE) 115 116extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 117extern const unsigned char rtx_next[NUM_RTX_CODE]; 118 119/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 120 relative to which the offsets are calculated, as explained in rtl.def. */ 121struct addr_diff_vec_flags 122{ 123 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 124 unsigned min_align: 8; 125 /* Flags: */ 126 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 127 unsigned min_after_vec: 1; /* minimum address target label is 128 after the ADDR_DIFF_VEC. */ 129 unsigned max_after_vec: 1; /* maximum address target label is 130 after the ADDR_DIFF_VEC. */ 131 unsigned min_after_base: 1; /* minimum address target label is 132 after BASE. */ 133 unsigned max_after_base: 1; /* maximum address target label is 134 after BASE. */ 135 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 136 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 137 unsigned : 2; 138 unsigned scale : 8; 139}; 140 141/* Structure used to describe the attributes of a MEM. These are hashed 142 so MEMs that the same attributes share a data structure. This means 143 they cannot be modified in place. */ 144struct GTY(()) mem_attrs 145{ 146 /* The expression that the MEM accesses, or null if not known. 147 This expression might be larger than the memory reference itself. 148 (In other words, the MEM might access only part of the object.) */ 149 tree expr; 150 151 /* The offset of the memory reference from the start of EXPR. 152 Only valid if OFFSET_KNOWN_P. */ 153 HOST_WIDE_INT offset; 154 155 /* The size of the memory reference in bytes. Only valid if 156 SIZE_KNOWN_P. */ 157 HOST_WIDE_INT size; 158 159 /* The alias set of the memory reference. */ 160 alias_set_type alias; 161 162 /* The alignment of the reference in bits. Always a multiple of 163 BITS_PER_UNIT. Note that EXPR may have a stricter alignment 164 than the memory reference itself. */ 165 unsigned int align; 166 167 /* The address space that the memory reference uses. */ 168 unsigned char addrspace; 169 170 /* True if OFFSET is known. */ 171 bool offset_known_p; 172 173 /* True if SIZE is known. */ 174 bool size_known_p; 175}; 176 177/* Structure used to describe the attributes of a REG in similar way as 178 mem_attrs does for MEM above. Note that the OFFSET field is calculated 179 in the same way as for mem_attrs, rather than in the same way as a 180 SUBREG_BYTE. For example, if a big-endian target stores a byte 181 object in the low part of a 4-byte register, the OFFSET field 182 will be -3 rather than 0. */ 183 184struct GTY((for_user)) reg_attrs { 185 tree decl; /* decl corresponding to REG. */ 186 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 187}; 188 189/* Common union for an element of an rtx. */ 190 191union rtunion 192{ 193 int rt_int; 194 unsigned int rt_uint; 195 const char *rt_str; 196 rtx rt_rtx; 197 rtvec rt_rtvec; 198 machine_mode rt_type; 199 addr_diff_vec_flags rt_addr_diff_vec_flags; 200 struct cselib_val *rt_cselib; 201 tree rt_tree; 202 basic_block rt_bb; 203 mem_attrs *rt_mem; 204 reg_attrs *rt_reg; 205 struct constant_descriptor_rtx *rt_constant; 206 struct dw_cfi_node *rt_cfi; 207}; 208 209/* This structure remembers the position of a SYMBOL_REF within an 210 object_block structure. A SYMBOL_REF only provides this information 211 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 212struct GTY(()) block_symbol { 213 /* The usual SYMBOL_REF fields. */ 214 rtunion GTY ((skip)) fld[2]; 215 216 /* The block that contains this object. */ 217 struct object_block *block; 218 219 /* The offset of this object from the start of its block. It is negative 220 if the symbol has not yet been assigned an offset. */ 221 HOST_WIDE_INT offset; 222}; 223 224/* Describes a group of objects that are to be placed together in such 225 a way that their relative positions are known. */ 226struct GTY((for_user)) object_block { 227 /* The section in which these objects should be placed. */ 228 section *sect; 229 230 /* The alignment of the first object, measured in bits. */ 231 unsigned int alignment; 232 233 /* The total size of the objects, measured in bytes. */ 234 HOST_WIDE_INT size; 235 236 /* The SYMBOL_REFs for each object. The vector is sorted in 237 order of increasing offset and the following conditions will 238 hold for each element X: 239 240 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 241 !SYMBOL_REF_ANCHOR_P (X) 242 SYMBOL_REF_BLOCK (X) == [address of this structure] 243 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 244 vec<rtx, va_gc> *objects; 245 246 /* All the anchor SYMBOL_REFs used to address these objects, sorted 247 in order of increasing offset, and then increasing TLS model. 248 The following conditions will hold for each element X in this vector: 249 250 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 251 SYMBOL_REF_ANCHOR_P (X) 252 SYMBOL_REF_BLOCK (X) == [address of this structure] 253 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 254 vec<rtx, va_gc> *anchors; 255}; 256 257struct GTY((variable_size)) hwivec_def { 258 HOST_WIDE_INT elem[1]; 259}; 260 261/* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */ 262#define CWI_GET_NUM_ELEM(RTX) \ 263 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem) 264#define CWI_PUT_NUM_ELEM(RTX, NUM) \ 265 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM)) 266 267/* RTL expression ("rtx"). */ 268 269/* The GTY "desc" and "tag" options below are a kludge: we need a desc 270 field for for gengtype to recognize that inheritance is occurring, 271 so that all subclasses are redirected to the traversal hook for the 272 base class. 273 However, all of the fields are in the base class, and special-casing 274 is at work. Hence we use desc and tag of 0, generating a switch 275 statement of the form: 276 switch (0) 277 { 278 case 0: // all the work happens here 279 } 280 in order to work with the existing special-casing in gengtype. */ 281 282struct GTY((desc("0"), tag("0"), 283 chain_next ("RTX_NEXT (&%h)"), 284 chain_prev ("RTX_PREV (&%h)"))) rtx_def { 285 /* The kind of expression this is. */ 286 ENUM_BITFIELD(rtx_code) code: 16; 287 288 /* The kind of value the expression has. */ 289 ENUM_BITFIELD(machine_mode) mode : 8; 290 291 /* 1 in a MEM if we should keep the alias set for this mem unchanged 292 when we access a component. 293 1 in a JUMP_INSN if it is a crossing jump. 294 1 in a CALL_INSN if it is a sibling call. 295 1 in a SET that is for a return. 296 In a CODE_LABEL, part of the two-bit alternate entry field. 297 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c. 298 1 in a VALUE is SP_BASED_VALUE_P in cselib.c. 299 1 in a SUBREG generated by LRA for reload insns. 300 1 in a CALL for calls instrumented by Pointer Bounds Checker. */ 301 unsigned int jump : 1; 302 /* In a CODE_LABEL, part of the two-bit alternate entry field. 303 1 in a MEM if it cannot trap. 304 1 in a CALL_INSN logically equivalent to 305 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 306 unsigned int call : 1; 307 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 308 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 309 1 in a SYMBOL_REF if it addresses something in the per-function 310 constants pool. 311 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY. 312 1 in a NOTE, or EXPR_LIST for a const call. 313 1 in a JUMP_INSN of an annulling branch. 314 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c. 315 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c. 316 1 in a clobber temporarily created for LRA. */ 317 unsigned int unchanging : 1; 318 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 319 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 320 if it has been deleted. 321 1 in a REG expression if corresponds to a variable declared by the user, 322 0 for an internally generated temporary. 323 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 324 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a 325 non-local label. 326 In a SYMBOL_REF, this flag is used for machine-specific purposes. 327 In a PREFETCH, this flag indicates that it should be considered a scheduling 328 barrier. 329 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */ 330 unsigned int volatil : 1; 331 /* 1 in a REG if the register is used only in exit code a loop. 332 1 in a SUBREG expression if was generated from a variable with a 333 promoted mode. 334 1 in a CODE_LABEL if the label is used for nonlocal gotos 335 and must not be deleted even if its count is zero. 336 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 337 together with the preceding insn. Valid only within sched. 338 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 339 from the target of a branch. Valid from reorg until end of compilation; 340 cleared before used. 341 342 The name of the field is historical. It used to be used in MEMs 343 to record whether the MEM accessed part of a structure. */ 344 unsigned int in_struct : 1; 345 /* At the end of RTL generation, 1 if this rtx is used. This is used for 346 copying shared structure. See `unshare_all_rtl'. 347 In a REG, this is not needed for that purpose, and used instead 348 in `leaf_renumber_regs_insn'. 349 1 in a SYMBOL_REF, means that emit_library_call 350 has used it as the function. 351 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c. 352 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */ 353 unsigned int used : 1; 354 /* 1 in an INSN or a SET if this rtx is related to the call frame, 355 either changing how we compute the frame address or saving and 356 restoring registers in the prologue and epilogue. 357 1 in a REG or MEM if it is a pointer. 358 1 in a SYMBOL_REF if it addresses something in the per-function 359 constant string pool. 360 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */ 361 unsigned frame_related : 1; 362 /* 1 in a REG or PARALLEL that is the current function's return value. 363 1 in a SYMBOL_REF for a weak symbol. 364 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. 365 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c. 366 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */ 367 unsigned return_val : 1; 368 369 union { 370 /* The final union field is aligned to 64 bits on LP64 hosts, 371 giving a 32-bit gap after the fields above. We optimize the 372 layout for that case and use the gap for extra code-specific 373 information. */ 374 375 /* The ORIGINAL_REGNO of a REG. */ 376 unsigned int original_regno; 377 378 /* The INSN_UID of an RTX_INSN-class code. */ 379 int insn_uid; 380 381 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */ 382 unsigned int symbol_ref_flags; 383 384 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */ 385 enum var_init_status var_location_status; 386 387 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of 388 HOST_WIDE_INTs in the hwivec_def. */ 389 unsigned int num_elem; 390 } GTY ((skip)) u2; 391 392 /* The first element of the operands of this rtx. 393 The number of operands and their types are controlled 394 by the `code' field, according to rtl.def. */ 395 union u { 396 rtunion fld[1]; 397 HOST_WIDE_INT hwint[1]; 398 struct block_symbol block_sym; 399 struct real_value rv; 400 struct fixed_value fv; 401 struct hwivec_def hwiv; 402 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 403}; 404 405/* A node for constructing singly-linked lists of rtx. */ 406 407class GTY(()) rtx_expr_list : public rtx_def 408{ 409 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */ 410 411public: 412 /* Get next in list. */ 413 rtx_expr_list *next () const; 414 415 /* Get at the underlying rtx. */ 416 rtx element () const; 417}; 418 419template <> 420template <> 421inline bool 422is_a_helper <rtx_expr_list *>::test (rtx rt) 423{ 424 return rt->code == EXPR_LIST; 425} 426 427class GTY(()) rtx_insn_list : public rtx_def 428{ 429 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST). 430 431 This is an instance of: 432 433 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA) 434 435 i.e. a node for constructing singly-linked lists of rtx_insn *, where 436 the list is "external" to the insn (as opposed to the doubly-linked 437 list embedded within rtx_insn itself). */ 438 439public: 440 /* Get next in list. */ 441 rtx_insn_list *next () const; 442 443 /* Get at the underlying instruction. */ 444 rtx_insn *insn () const; 445 446}; 447 448template <> 449template <> 450inline bool 451is_a_helper <rtx_insn_list *>::test (rtx rt) 452{ 453 return rt->code == INSN_LIST; 454} 455 456/* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx, 457 typically (but not always) of rtx_insn *, used in the late passes. */ 458 459class GTY(()) rtx_sequence : public rtx_def 460{ 461 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */ 462 463public: 464 /* Get number of elements in sequence. */ 465 int len () const; 466 467 /* Get i-th element of the sequence. */ 468 rtx element (int index) const; 469 470 /* Get i-th element of the sequence, with a checked cast to 471 rtx_insn *. */ 472 rtx_insn *insn (int index) const; 473}; 474 475template <> 476template <> 477inline bool 478is_a_helper <rtx_sequence *>::test (rtx rt) 479{ 480 return rt->code == SEQUENCE; 481} 482 483template <> 484template <> 485inline bool 486is_a_helper <const rtx_sequence *>::test (const_rtx rt) 487{ 488 return rt->code == SEQUENCE; 489} 490 491class GTY(()) rtx_insn : public rtx_def 492{ 493public: 494 /* No extra fields, but adds the invariant: 495 496 (INSN_P (X) 497 || NOTE_P (X) 498 || JUMP_TABLE_DATA_P (X) 499 || BARRIER_P (X) 500 || LABEL_P (X)) 501 502 i.e. that we must be able to use the following: 503 INSN_UID () 504 NEXT_INSN () 505 PREV_INSN () 506 i.e. we have an rtx that has an INSN_UID field and can be part of 507 a linked list of insns. 508 */ 509 510 /* Returns true if this insn has been deleted. */ 511 512 bool deleted () const { return volatil; } 513 514 /* Mark this insn as deleted. */ 515 516 void set_deleted () { volatil = true; } 517 518 /* Mark this insn as not deleted. */ 519 520 void set_undeleted () { volatil = false; } 521}; 522 523/* Subclasses of rtx_insn. */ 524 525class GTY(()) rtx_debug_insn : public rtx_insn 526{ 527 /* No extra fields, but adds the invariant: 528 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN) 529 i.e. an annotation for tracking variable assignments. 530 531 This is an instance of: 532 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN) 533 from rtl.def. */ 534}; 535 536class GTY(()) rtx_nonjump_insn : public rtx_insn 537{ 538 /* No extra fields, but adds the invariant: 539 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN) 540 i.e an instruction that cannot jump. 541 542 This is an instance of: 543 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN) 544 from rtl.def. */ 545}; 546 547class GTY(()) rtx_jump_insn : public rtx_insn 548{ 549 /* No extra fields, but adds the invariant: 550 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN) 551 i.e. an instruction that can possibly jump. 552 553 This is an instance of: 554 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN) 555 from rtl.def. */ 556}; 557 558class GTY(()) rtx_call_insn : public rtx_insn 559{ 560 /* No extra fields, but adds the invariant: 561 CALL_P (X) aka (GET_CODE (X) == CALL_INSN) 562 i.e. an instruction that can possibly call a subroutine 563 but which will not change which instruction comes next 564 in the current function. 565 566 This is an instance of: 567 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN) 568 from rtl.def. */ 569}; 570 571class GTY(()) rtx_jump_table_data : public rtx_insn 572{ 573 /* No extra fields, but adds the invariant: 574 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA) 575 i.e. a data for a jump table, considered an instruction for 576 historical reasons. 577 578 This is an instance of: 579 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN) 580 from rtl.def. */ 581 582public: 583 584 /* This can be either: 585 586 (a) a table of absolute jumps, in which case PATTERN (this) is an 587 ADDR_VEC with arg 0 a vector of labels, or 588 589 (b) a table of relative jumps (e.g. for -fPIC), in which case 590 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and 591 arg 1 the vector of labels. 592 593 This method gets the underlying vec. */ 594 595 inline rtvec get_labels () const; 596}; 597 598class GTY(()) rtx_barrier : public rtx_insn 599{ 600 /* No extra fields, but adds the invariant: 601 BARRIER_P (X) aka (GET_CODE (X) == BARRIER) 602 i.e. a marker that indicates that control will not flow through. 603 604 This is an instance of: 605 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA) 606 from rtl.def. */ 607}; 608 609class GTY(()) rtx_code_label : public rtx_insn 610{ 611 /* No extra fields, but adds the invariant: 612 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL) 613 i.e. a label in the assembler. 614 615 This is an instance of: 616 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA) 617 from rtl.def. */ 618}; 619 620class GTY(()) rtx_note : public rtx_insn 621{ 622 /* No extra fields, but adds the invariant: 623 NOTE_P(X) aka (GET_CODE (X) == NOTE) 624 i.e. a note about the corresponding source code. 625 626 This is an instance of: 627 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA) 628 from rtl.def. */ 629}; 630 631/* The size in bytes of an rtx header (code, mode and flags). */ 632#define RTX_HDR_SIZE offsetof (struct rtx_def, u) 633 634/* The size in bytes of an rtx with code CODE. */ 635#define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 636 637#define NULL_RTX (rtx) 0 638 639/* The "next" and "previous" RTX, relative to this one. */ 640 641#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 642 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 643 644/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 645 */ 646#define RTX_PREV(X) ((INSN_P (X) \ 647 || NOTE_P (X) \ 648 || JUMP_TABLE_DATA_P (X) \ 649 || BARRIER_P (X) \ 650 || LABEL_P (X)) \ 651 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \ 652 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \ 653 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL) 654 655/* Define macros to access the `code' field of the rtx. */ 656 657#define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 658#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 659 660#define GET_MODE(RTX) ((machine_mode) (RTX)->mode) 661#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 662 663/* RTL vector. These appear inside RTX's when there is a need 664 for a variable number of things. The principle use is inside 665 PARALLEL expressions. */ 666 667struct GTY(()) rtvec_def { 668 int num_elem; /* number of elements */ 669 rtx GTY ((length ("%h.num_elem"))) elem[1]; 670}; 671 672#define NULL_RTVEC (rtvec) 0 673 674#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 675#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 676 677/* Predicate yielding nonzero iff X is an rtx for a register. */ 678#define REG_P(X) (GET_CODE (X) == REG) 679 680/* Predicate yielding nonzero iff X is an rtx for a memory location. */ 681#define MEM_P(X) (GET_CODE (X) == MEM) 682 683#if TARGET_SUPPORTS_WIDE_INT 684 685/* Match CONST_*s that can represent compile-time constant integers. */ 686#define CASE_CONST_SCALAR_INT \ 687 case CONST_INT: \ 688 case CONST_WIDE_INT 689 690/* Match CONST_*s for which pointer equality corresponds to value 691 equality. */ 692#define CASE_CONST_UNIQUE \ 693 case CONST_INT: \ 694 case CONST_WIDE_INT: \ 695 case CONST_DOUBLE: \ 696 case CONST_FIXED 697 698/* Match all CONST_* rtxes. */ 699#define CASE_CONST_ANY \ 700 case CONST_INT: \ 701 case CONST_WIDE_INT: \ 702 case CONST_DOUBLE: \ 703 case CONST_FIXED: \ 704 case CONST_VECTOR 705 706#else 707 708/* Match CONST_*s that can represent compile-time constant integers. */ 709#define CASE_CONST_SCALAR_INT \ 710 case CONST_INT: \ 711 case CONST_DOUBLE 712 713/* Match CONST_*s for which pointer equality corresponds to value 714 equality. */ 715#define CASE_CONST_UNIQUE \ 716 case CONST_INT: \ 717 case CONST_DOUBLE: \ 718 case CONST_FIXED 719 720/* Match all CONST_* rtxes. */ 721#define CASE_CONST_ANY \ 722 case CONST_INT: \ 723 case CONST_DOUBLE: \ 724 case CONST_FIXED: \ 725 case CONST_VECTOR 726#endif 727 728/* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 729#define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 730 731/* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 732#define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT) 733 734/* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */ 735#define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED) 736 737/* Predicate yielding true iff X is an rtx for a double-int 738 or floating point constant. */ 739#define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE) 740 741/* Predicate yielding true iff X is an rtx for a double-int. */ 742#define CONST_DOUBLE_AS_INT_P(X) \ 743 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode) 744 745/* Predicate yielding true iff X is an rtx for a integer const. */ 746#if TARGET_SUPPORTS_WIDE_INT 747#define CONST_SCALAR_INT_P(X) \ 748 (CONST_INT_P (X) || CONST_WIDE_INT_P (X)) 749#else 750#define CONST_SCALAR_INT_P(X) \ 751 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X)) 752#endif 753 754/* Predicate yielding true iff X is an rtx for a double-int. */ 755#define CONST_DOUBLE_AS_FLOAT_P(X) \ 756 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode) 757 758/* Predicate yielding nonzero iff X is a label insn. */ 759#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 760 761/* Predicate yielding nonzero iff X is a jump insn. */ 762#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 763 764/* Predicate yielding nonzero iff X is a call insn. */ 765#define CALL_P(X) (GET_CODE (X) == CALL_INSN) 766 767/* Predicate yielding nonzero iff X is an insn that cannot jump. */ 768#define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 769 770/* Predicate yielding nonzero iff X is a debug note/insn. */ 771#define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN) 772 773/* Predicate yielding nonzero iff X is an insn that is not a debug insn. */ 774#define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) 775 776/* Nonzero if DEBUG_INSN_P may possibly hold. */ 777#define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments) 778 779/* Predicate yielding nonzero iff X is a real insn. */ 780#define INSN_P(X) \ 781 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 782 783/* Predicate yielding nonzero iff X is a note insn. */ 784#define NOTE_P(X) (GET_CODE (X) == NOTE) 785 786/* Predicate yielding nonzero iff X is a barrier insn. */ 787#define BARRIER_P(X) (GET_CODE (X) == BARRIER) 788 789/* Predicate yielding nonzero iff X is a data for a jump table. */ 790#define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA) 791 792/* Predicate yielding nonzero iff RTX is a subreg. */ 793#define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG) 794 795template <> 796template <> 797inline bool 798is_a_helper <rtx_insn *>::test (rtx rt) 799{ 800 return (INSN_P (rt) 801 || NOTE_P (rt) 802 || JUMP_TABLE_DATA_P (rt) 803 || BARRIER_P (rt) 804 || LABEL_P (rt)); 805} 806 807template <> 808template <> 809inline bool 810is_a_helper <const rtx_insn *>::test (const_rtx rt) 811{ 812 return (INSN_P (rt) 813 || NOTE_P (rt) 814 || JUMP_TABLE_DATA_P (rt) 815 || BARRIER_P (rt) 816 || LABEL_P (rt)); 817} 818 819template <> 820template <> 821inline bool 822is_a_helper <rtx_debug_insn *>::test (rtx rt) 823{ 824 return DEBUG_INSN_P (rt); 825} 826 827template <> 828template <> 829inline bool 830is_a_helper <rtx_nonjump_insn *>::test (rtx rt) 831{ 832 return NONJUMP_INSN_P (rt); 833} 834 835template <> 836template <> 837inline bool 838is_a_helper <rtx_jump_insn *>::test (rtx rt) 839{ 840 return JUMP_P (rt); 841} 842 843template <> 844template <> 845inline bool 846is_a_helper <rtx_call_insn *>::test (rtx rt) 847{ 848 return CALL_P (rt); 849} 850 851template <> 852template <> 853inline bool 854is_a_helper <rtx_call_insn *>::test (rtx_insn *insn) 855{ 856 return CALL_P (insn); 857} 858 859template <> 860template <> 861inline bool 862is_a_helper <rtx_jump_table_data *>::test (rtx rt) 863{ 864 return JUMP_TABLE_DATA_P (rt); 865} 866 867template <> 868template <> 869inline bool 870is_a_helper <rtx_jump_table_data *>::test (rtx_insn *insn) 871{ 872 return JUMP_TABLE_DATA_P (insn); 873} 874 875template <> 876template <> 877inline bool 878is_a_helper <rtx_barrier *>::test (rtx rt) 879{ 880 return BARRIER_P (rt); 881} 882 883template <> 884template <> 885inline bool 886is_a_helper <rtx_code_label *>::test (rtx rt) 887{ 888 return LABEL_P (rt); 889} 890 891template <> 892template <> 893inline bool 894is_a_helper <rtx_code_label *>::test (rtx_insn *insn) 895{ 896 return LABEL_P (insn); 897} 898 899template <> 900template <> 901inline bool 902is_a_helper <rtx_note *>::test (rtx rt) 903{ 904 return NOTE_P (rt); 905} 906 907template <> 908template <> 909inline bool 910is_a_helper <rtx_note *>::test (rtx_insn *insn) 911{ 912 return NOTE_P (insn); 913} 914 915/* Predicate yielding nonzero iff X is a return or simple_return. */ 916#define ANY_RETURN_P(X) \ 917 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN) 918 919/* 1 if X is a unary operator. */ 920 921#define UNARY_P(X) \ 922 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 923 924/* 1 if X is a binary operator. */ 925 926#define BINARY_P(X) \ 927 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 928 929/* 1 if X is an arithmetic operator. */ 930 931#define ARITHMETIC_P(X) \ 932 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 933 == RTX_ARITHMETIC_RESULT) 934 935/* 1 if X is an arithmetic operator. */ 936 937#define COMMUTATIVE_ARITH_P(X) \ 938 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 939 940/* 1 if X is a commutative arithmetic operator or a comparison operator. 941 These two are sometimes selected together because it is possible to 942 swap the two operands. */ 943 944#define SWAPPABLE_OPERANDS_P(X) \ 945 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 946 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 947 | (1 << RTX_COMPARE))) 948 949/* 1 if X is a non-commutative operator. */ 950 951#define NON_COMMUTATIVE_P(X) \ 952 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 953 == RTX_NON_COMMUTATIVE_RESULT) 954 955/* 1 if X is a commutative operator on integers. */ 956 957#define COMMUTATIVE_P(X) \ 958 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 959 == RTX_COMMUTATIVE_RESULT) 960 961/* 1 if X is a relational operator. */ 962 963#define COMPARISON_P(X) \ 964 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 965 966/* 1 if X is a constant value that is an integer. */ 967 968#define CONSTANT_P(X) \ 969 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 970 971/* 1 if X can be used to represent an object. */ 972#define OBJECT_P(X) \ 973 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 974 975/* General accessor macros for accessing the fields of an rtx. */ 976 977#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 978/* The bit with a star outside the statement expr and an & inside is 979 so that N can be evaluated only once. */ 980#define RTL_CHECK1(RTX, N, C1) __extension__ \ 981(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 982 const enum rtx_code _code = GET_CODE (_rtx); \ 983 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 984 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 985 __FUNCTION__); \ 986 if (GET_RTX_FORMAT (_code)[_n] != C1) \ 987 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 988 __FUNCTION__); \ 989 &_rtx->u.fld[_n]; })) 990 991#define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 992(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 993 const enum rtx_code _code = GET_CODE (_rtx); \ 994 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 995 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 996 __FUNCTION__); \ 997 if (GET_RTX_FORMAT (_code)[_n] != C1 \ 998 && GET_RTX_FORMAT (_code)[_n] != C2) \ 999 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 1000 __FUNCTION__); \ 1001 &_rtx->u.fld[_n]; })) 1002 1003#define RTL_CHECKC1(RTX, N, C) __extension__ \ 1004(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1005 if (GET_CODE (_rtx) != (C)) \ 1006 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 1007 __FUNCTION__); \ 1008 &_rtx->u.fld[_n]; })) 1009 1010#define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 1011(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1012 const enum rtx_code _code = GET_CODE (_rtx); \ 1013 if (_code != (C1) && _code != (C2)) \ 1014 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 1015 __FUNCTION__); \ 1016 &_rtx->u.fld[_n]; })) 1017 1018#define RTVEC_ELT(RTVEC, I) __extension__ \ 1019(*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \ 1020 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 1021 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 1022 __FUNCTION__); \ 1023 &_rtvec->elem[_i]; })) 1024 1025#define XWINT(RTX, N) __extension__ \ 1026(*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1027 const enum rtx_code _code = GET_CODE (_rtx); \ 1028 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 1029 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 1030 __FUNCTION__); \ 1031 if (GET_RTX_FORMAT (_code)[_n] != 'w') \ 1032 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 1033 __FUNCTION__); \ 1034 &_rtx->u.hwint[_n]; })) 1035 1036#define CWI_ELT(RTX, I) __extension__ \ 1037(*({ __typeof (RTX) const _cwi = (RTX); \ 1038 int _max = CWI_GET_NUM_ELEM (_cwi); \ 1039 const int _i = (I); \ 1040 if (_i < 0 || _i >= _max) \ 1041 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \ 1042 __FUNCTION__); \ 1043 &_cwi->u.hwiv.elem[_i]; })) 1044 1045#define XCWINT(RTX, N, C) __extension__ \ 1046(*({ __typeof (RTX) const _rtx = (RTX); \ 1047 if (GET_CODE (_rtx) != (C)) \ 1048 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 1049 __FUNCTION__); \ 1050 &_rtx->u.hwint[N]; })) 1051 1052#define XCMWINT(RTX, N, C, M) __extension__ \ 1053(*({ __typeof (RTX) const _rtx = (RTX); \ 1054 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 1055 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 1056 __LINE__, __FUNCTION__); \ 1057 &_rtx->u.hwint[N]; })) 1058 1059#define XCNMPRV(RTX, C, M) __extension__ \ 1060({ __typeof (RTX) const _rtx = (RTX); \ 1061 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 1062 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 1063 __LINE__, __FUNCTION__); \ 1064 &_rtx->u.rv; }) 1065 1066#define XCNMPFV(RTX, C, M) __extension__ \ 1067({ __typeof (RTX) const _rtx = (RTX); \ 1068 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 1069 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 1070 __LINE__, __FUNCTION__); \ 1071 &_rtx->u.fv; }) 1072 1073#define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 1074({ __typeof (RTX) const _symbol = (RTX); \ 1075 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \ 1076 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 1077 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 1078 __FUNCTION__); \ 1079 &_symbol->u.block_sym; }) 1080 1081#define HWIVEC_CHECK(RTX,C) __extension__ \ 1082({ __typeof (RTX) const _symbol = (RTX); \ 1083 RTL_CHECKC1 (_symbol, 0, C); \ 1084 &_symbol->u.hwiv; }) 1085 1086extern void rtl_check_failed_bounds (const_rtx, int, const char *, int, 1087 const char *) 1088 ATTRIBUTE_NORETURN; 1089extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int, 1090 const char *) 1091 ATTRIBUTE_NORETURN; 1092extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *, 1093 int, const char *) 1094 ATTRIBUTE_NORETURN; 1095extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *, 1096 int, const char *) 1097 ATTRIBUTE_NORETURN; 1098extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code, 1099 const char *, int, const char *) 1100 ATTRIBUTE_NORETURN; 1101extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, machine_mode, 1102 bool, const char *, int, const char *) 1103 ATTRIBUTE_NORETURN; 1104extern void rtl_check_failed_block_symbol (const char *, int, const char *) 1105 ATTRIBUTE_NORETURN; 1106extern void cwi_check_failed_bounds (const_rtx, int, const char *, int, 1107 const char *) 1108 ATTRIBUTE_NORETURN; 1109extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int, 1110 const char *) 1111 ATTRIBUTE_NORETURN; 1112 1113#else /* not ENABLE_RTL_CHECKING */ 1114 1115#define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 1116#define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 1117#define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) 1118#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 1119#define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) 1120#define XWINT(RTX, N) ((RTX)->u.hwint[N]) 1121#define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I]) 1122#define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 1123#define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 1124#define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 1125#define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 1126#define XCNMPFV(RTX, C, M) (&(RTX)->u.fv) 1127#define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 1128#define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv) 1129 1130#endif 1131 1132/* General accessor macros for accessing the flags of an rtx. */ 1133 1134/* Access an individual rtx flag, with no checking of any kind. */ 1135#define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 1136 1137#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 1138#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 1139({ __typeof (RTX) const _rtx = (RTX); \ 1140 if (GET_CODE (_rtx) != C1) \ 1141 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1142 __FUNCTION__); \ 1143 _rtx; }) 1144 1145#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 1146({ __typeof (RTX) const _rtx = (RTX); \ 1147 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \ 1148 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 1149 __FUNCTION__); \ 1150 _rtx; }) 1151 1152#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 1153({ __typeof (RTX) const _rtx = (RTX); \ 1154 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \ 1155 && GET_CODE (_rtx) != C3) \ 1156 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1157 __FUNCTION__); \ 1158 _rtx; }) 1159 1160#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 1161({ __typeof (RTX) const _rtx = (RTX); \ 1162 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \ 1163 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \ 1164 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1165 __FUNCTION__); \ 1166 _rtx; }) 1167 1168#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 1169({ __typeof (RTX) const _rtx = (RTX); \ 1170 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1171 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1172 && GET_CODE (_rtx) != C5) \ 1173 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1174 __FUNCTION__); \ 1175 _rtx; }) 1176 1177#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 1178 __extension__ \ 1179({ __typeof (RTX) const _rtx = (RTX); \ 1180 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1181 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1182 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \ 1183 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 1184 __FUNCTION__); \ 1185 _rtx; }) 1186 1187#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 1188 __extension__ \ 1189({ __typeof (RTX) const _rtx = (RTX); \ 1190 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1191 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1192 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \ 1193 && GET_CODE (_rtx) != C7) \ 1194 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1195 __FUNCTION__); \ 1196 _rtx; }) 1197 1198#define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \ 1199 __extension__ \ 1200({ __typeof (RTX) const _rtx = (RTX); \ 1201 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \ 1202 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1203 __FUNCTION__); \ 1204 _rtx; }) 1205 1206extern void rtl_check_failed_flag (const char *, const_rtx, const char *, 1207 int, const char *) 1208 ATTRIBUTE_NORETURN 1209 ; 1210 1211#else /* not ENABLE_RTL_FLAG_CHECKING */ 1212 1213#define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 1214#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 1215#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 1216#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 1217#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 1218#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 1219#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 1220#define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX) 1221#endif 1222 1223#define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 1224#define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint) 1225#define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 1226#define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 1227#define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 1228#define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 1229#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 1230#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 1231#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 1232#define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi) 1233 1234#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 1235#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 1236 1237/* These are like XINT, etc. except that they expect a '0' field instead 1238 of the normal type code. */ 1239 1240#define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 1241#define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 1242#define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 1243#define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 1244#define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 1245#define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 1246#define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 1247#define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 1248#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 1249#define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 1250#define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 1251#define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 1252#define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 1253 1254/* Access a '0' field with any type. */ 1255#define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 1256 1257#define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 1258#define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 1259#define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 1260#define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 1261#define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 1262#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 1263#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 1264#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 1265#define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi) 1266#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 1267 1268#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 1269#define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 1270 1271#define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 1272 1273 1274/* Methods of rtx_expr_list. */ 1275 1276inline rtx_expr_list *rtx_expr_list::next () const 1277{ 1278 rtx tmp = XEXP (this, 1); 1279 return safe_as_a <rtx_expr_list *> (tmp); 1280} 1281 1282inline rtx rtx_expr_list::element () const 1283{ 1284 return XEXP (this, 0); 1285} 1286 1287/* Methods of rtx_insn_list. */ 1288 1289inline rtx_insn_list *rtx_insn_list::next () const 1290{ 1291 rtx tmp = XEXP (this, 1); 1292 return safe_as_a <rtx_insn_list *> (tmp); 1293} 1294 1295inline rtx_insn *rtx_insn_list::insn () const 1296{ 1297 rtx tmp = XEXP (this, 0); 1298 return safe_as_a <rtx_insn *> (tmp); 1299} 1300 1301/* Methods of rtx_sequence. */ 1302 1303inline int rtx_sequence::len () const 1304{ 1305 return XVECLEN (this, 0); 1306} 1307 1308inline rtx rtx_sequence::element (int index) const 1309{ 1310 return XVECEXP (this, 0, index); 1311} 1312 1313inline rtx_insn *rtx_sequence::insn (int index) const 1314{ 1315 return as_a <rtx_insn *> (XVECEXP (this, 0, index)); 1316} 1317 1318/* ACCESS MACROS for particular fields of insns. */ 1319 1320/* Holds a unique number for each insn. 1321 These are not necessarily sequentially increasing. */ 1322inline int INSN_UID (const_rtx insn) 1323{ 1324 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID", 1325 (insn))->u2.insn_uid; 1326} 1327inline int& INSN_UID (rtx insn) 1328{ 1329 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID", 1330 (insn))->u2.insn_uid; 1331} 1332 1333/* Chain insns together in sequence. */ 1334 1335/* For now these are split in two: an rvalue form: 1336 PREV_INSN/NEXT_INSN 1337 and an lvalue form: 1338 SET_NEXT_INSN/SET_PREV_INSN. */ 1339 1340inline rtx_insn *PREV_INSN (const rtx_insn *insn) 1341{ 1342 rtx prev = XEXP (insn, 0); 1343 return safe_as_a <rtx_insn *> (prev); 1344} 1345 1346inline rtx& SET_PREV_INSN (rtx_insn *insn) 1347{ 1348 return XEXP (insn, 0); 1349} 1350 1351inline rtx_insn *NEXT_INSN (const rtx_insn *insn) 1352{ 1353 rtx next = XEXP (insn, 1); 1354 return safe_as_a <rtx_insn *> (next); 1355} 1356 1357inline rtx& SET_NEXT_INSN (rtx_insn *insn) 1358{ 1359 return XEXP (insn, 1); 1360} 1361 1362inline basic_block BLOCK_FOR_INSN (const_rtx insn) 1363{ 1364 return XBBDEF (insn, 2); 1365} 1366 1367inline basic_block& BLOCK_FOR_INSN (rtx insn) 1368{ 1369 return XBBDEF (insn, 2); 1370} 1371 1372inline void set_block_for_insn (rtx_insn *insn, basic_block bb) 1373{ 1374 BLOCK_FOR_INSN (insn) = bb; 1375} 1376 1377/* The body of an insn. */ 1378inline rtx PATTERN (const_rtx insn) 1379{ 1380 return XEXP (insn, 3); 1381} 1382 1383inline rtx& PATTERN (rtx insn) 1384{ 1385 return XEXP (insn, 3); 1386} 1387 1388inline unsigned int INSN_LOCATION (const rtx_insn *insn) 1389{ 1390 return XUINT (insn, 4); 1391} 1392 1393inline unsigned int& INSN_LOCATION (rtx_insn *insn) 1394{ 1395 return XUINT (insn, 4); 1396} 1397 1398inline bool INSN_HAS_LOCATION (const rtx_insn *insn) 1399{ 1400 return LOCATION_LOCUS (INSN_LOCATION (insn)) != UNKNOWN_LOCATION; 1401} 1402 1403/* LOCATION of an RTX if relevant. */ 1404#define RTL_LOCATION(X) (INSN_P (X) ? \ 1405 INSN_LOCATION (as_a <rtx_insn *> (X)) \ 1406 : UNKNOWN_LOCATION) 1407 1408/* Code number of instruction, from when it was recognized. 1409 -1 means this instruction has not been recognized yet. */ 1410#define INSN_CODE(INSN) XINT (INSN, 5) 1411 1412inline rtvec rtx_jump_table_data::get_labels () const 1413{ 1414 rtx pat = PATTERN (this); 1415 if (GET_CODE (pat) == ADDR_VEC) 1416 return XVEC (pat, 0); 1417 else 1418 return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */ 1419} 1420 1421#define RTX_FRAME_RELATED_P(RTX) \ 1422 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \ 1423 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related) 1424 1425/* 1 if JUMP RTX is a crossing jump. */ 1426#define CROSSING_JUMP_P(RTX) \ 1427 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump) 1428 1429/* 1 if RTX is a call to a const function. Built from ECF_CONST and 1430 TREE_READONLY. */ 1431#define RTL_CONST_CALL_P(RTX) \ 1432 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging) 1433 1434/* 1 if RTX is a call to a pure function. Built from ECF_PURE and 1435 DECL_PURE_P. */ 1436#define RTL_PURE_CALL_P(RTX) \ 1437 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val) 1438 1439/* 1 if RTX is a call to a const or pure function. */ 1440#define RTL_CONST_OR_PURE_CALL_P(RTX) \ 1441 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX)) 1442 1443/* 1 if RTX is a call to a looping const or pure function. Built from 1444 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 1445#define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \ 1446 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call) 1447 1448/* 1 if RTX is a call_insn for a sibling call. */ 1449#define SIBLING_CALL_P(RTX) \ 1450 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 1451 1452/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 1453#define INSN_ANNULLED_BRANCH_P(RTX) \ 1454 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging) 1455 1456/* 1 if RTX is an insn in a delay slot and is from the target of the branch. 1457 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 1458 executed if the branch is taken. For annulled branches with this bit 1459 clear, the insn should be executed only if the branch is not taken. */ 1460#define INSN_FROM_TARGET_P(RTX) \ 1461 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \ 1462 CALL_INSN)->in_struct) 1463 1464/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 1465 See the comments for ADDR_DIFF_VEC in rtl.def. */ 1466#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4) 1467 1468/* In a VALUE, the value cselib has assigned to RTX. 1469 This is a "struct cselib_val", see cselib.h. */ 1470#define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0) 1471 1472/* Holds a list of notes on what this insn does to various REGs. 1473 It is a chain of EXPR_LIST rtx's, where the second operand is the 1474 chain pointer and the first operand is the REG being described. 1475 The mode field of the EXPR_LIST contains not a real machine mode 1476 but a value from enum reg_note. */ 1477#define REG_NOTES(INSN) XEXP(INSN, 6) 1478 1479/* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in 1480 question. */ 1481#define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx) 1482 1483enum reg_note 1484{ 1485#define DEF_REG_NOTE(NAME) NAME, 1486#include "reg-notes.def" 1487#undef DEF_REG_NOTE 1488 REG_NOTE_MAX 1489}; 1490 1491/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 1492#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 1493#define PUT_REG_NOTE_KIND(LINK, KIND) \ 1494 PUT_MODE (LINK, (machine_mode) (KIND)) 1495 1496/* Names for REG_NOTE's in EXPR_LIST insn's. */ 1497 1498extern const char * const reg_note_name[]; 1499#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 1500 1501/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 1502 USE and CLOBBER expressions. 1503 USE expressions list the registers filled with arguments that 1504 are passed to the function. 1505 CLOBBER expressions document the registers explicitly clobbered 1506 by this CALL_INSN. 1507 Pseudo registers can not be mentioned in this list. */ 1508#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7) 1509 1510/* The label-number of a code-label. The assembler label 1511 is made from `L' and the label-number printed in decimal. 1512 Label numbers are unique in a compilation. */ 1513#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5) 1514 1515/* In a NOTE that is a line number, this is a string for the file name that the 1516 line is in. We use the same field to record block numbers temporarily in 1517 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 1518 between ints and pointers if we use a different macro for the block number.) 1519 */ 1520 1521/* Opaque data. */ 1522#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE) 1523#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE) 1524#define SET_INSN_DELETED(INSN) set_insn_deleted (INSN); 1525#define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE) 1526#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE) 1527#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE) 1528#define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE) 1529#define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE) 1530#define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE) 1531 1532/* In a NOTE that is a line number, this is the line number. 1533 Other kinds of NOTEs are identified by negative numbers here. */ 1534#define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE) 1535 1536/* Nonzero if INSN is a note marking the beginning of a basic block. */ 1537#define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 1538 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK) 1539 1540/* Variable declaration and the location of a variable. */ 1541#define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION)) 1542#define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION)) 1543 1544/* Initialization status of the variable in the location. Status 1545 can be unknown, uninitialized or initialized. See enumeration 1546 type below. */ 1547#define PAT_VAR_LOCATION_STATUS(PAT) \ 1548 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \ 1549 ->u2.var_location_status) 1550 1551/* Accessors for a NOTE_INSN_VAR_LOCATION. */ 1552#define NOTE_VAR_LOCATION_DECL(NOTE) \ 1553 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE)) 1554#define NOTE_VAR_LOCATION_LOC(NOTE) \ 1555 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE)) 1556#define NOTE_VAR_LOCATION_STATUS(NOTE) \ 1557 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE)) 1558 1559/* The VAR_LOCATION rtx in a DEBUG_INSN. */ 1560#define INSN_VAR_LOCATION(INSN) PATTERN (INSN) 1561 1562/* Accessors for a tree-expanded var location debug insn. */ 1563#define INSN_VAR_LOCATION_DECL(INSN) \ 1564 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN)) 1565#define INSN_VAR_LOCATION_LOC(INSN) \ 1566 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN)) 1567#define INSN_VAR_LOCATION_STATUS(INSN) \ 1568 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN)) 1569 1570/* Expand to the RTL that denotes an unknown variable location in a 1571 DEBUG_INSN. */ 1572#define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx)) 1573 1574/* Determine whether X is such an unknown location. */ 1575#define VAR_LOC_UNKNOWN_P(X) \ 1576 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx) 1577 1578/* 1 if RTX is emitted after a call, but it should take effect before 1579 the call returns. */ 1580#define NOTE_DURING_CALL_P(RTX) \ 1581 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call) 1582 1583/* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */ 1584#define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR) 1585 1586/* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */ 1587#define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR) 1588 1589/* PARM_DECL DEBUG_PARAMETER_REF references. */ 1590#define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF) 1591 1592/* Codes that appear in the NOTE_KIND field for kinds of notes 1593 that are not line numbers. These codes are all negative. 1594 1595 Notice that we do not try to use zero here for any of 1596 the special note codes because sometimes the source line 1597 actually can be zero! This happens (for example) when we 1598 are generating code for the per-translation-unit constructor 1599 and destructor routines for some C++ translation unit. */ 1600 1601enum insn_note 1602{ 1603#define DEF_INSN_NOTE(NAME) NAME, 1604#include "insn-notes.def" 1605#undef DEF_INSN_NOTE 1606 1607 NOTE_INSN_MAX 1608}; 1609 1610/* Names for NOTE insn's other than line numbers. */ 1611 1612extern const char * const note_insn_name[NOTE_INSN_MAX]; 1613#define GET_NOTE_INSN_NAME(NOTE_CODE) \ 1614 (note_insn_name[(NOTE_CODE)]) 1615 1616/* The name of a label, in case it corresponds to an explicit label 1617 in the input source code. */ 1618#define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL) 1619 1620/* In jump.c, each label contains a count of the number 1621 of LABEL_REFs that point at it, so unused labels can be deleted. */ 1622#define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) 1623 1624/* Labels carry a two-bit field composed of the ->jump and ->call 1625 bits. This field indicates whether the label is an alternate 1626 entry point, and if so, what kind. */ 1627enum label_kind 1628{ 1629 LABEL_NORMAL = 0, /* ordinary label */ 1630 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 1631 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 1632 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 1633}; 1634 1635#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 1636 1637/* Retrieve the kind of LABEL. */ 1638#define LABEL_KIND(LABEL) __extension__ \ 1639({ __typeof (LABEL) const _label = (LABEL); \ 1640 if (! LABEL_P (_label)) \ 1641 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 1642 __FUNCTION__); \ 1643 (enum label_kind) ((_label->jump << 1) | _label->call); }) 1644 1645/* Set the kind of LABEL. */ 1646#define SET_LABEL_KIND(LABEL, KIND) do { \ 1647 __typeof (LABEL) const _label = (LABEL); \ 1648 const unsigned int _kind = (KIND); \ 1649 if (! LABEL_P (_label)) \ 1650 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 1651 __FUNCTION__); \ 1652 _label->jump = ((_kind >> 1) & 1); \ 1653 _label->call = (_kind & 1); \ 1654} while (0) 1655 1656#else 1657 1658/* Retrieve the kind of LABEL. */ 1659#define LABEL_KIND(LABEL) \ 1660 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 1661 1662/* Set the kind of LABEL. */ 1663#define SET_LABEL_KIND(LABEL, KIND) do { \ 1664 rtx const _label = (LABEL); \ 1665 const unsigned int _kind = (KIND); \ 1666 _label->jump = ((_kind >> 1) & 1); \ 1667 _label->call = (_kind & 1); \ 1668} while (0) 1669 1670#endif /* rtl flag checking */ 1671 1672#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 1673 1674/* In jump.c, each JUMP_INSN can point to a label that it can jump to, 1675 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 1676 be decremented and possibly the label can be deleted. */ 1677#define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN) 1678 1679inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn) 1680{ 1681 return safe_as_a <rtx_insn *> (JUMP_LABEL (insn)); 1682} 1683 1684/* Once basic blocks are found, each CODE_LABEL starts a chain that 1685 goes through all the LABEL_REFs that jump to that label. The chain 1686 eventually winds up at the CODE_LABEL: it is circular. */ 1687#define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL) 1688 1689/* Get the label that a LABEL_REF references. */ 1690#define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF) 1691 1692 1693/* For a REG rtx, REGNO extracts the register number. REGNO can only 1694 be used on RHS. Use SET_REGNO to change the value. */ 1695#define REGNO(RTX) (rhs_regno(RTX)) 1696#define SET_REGNO(RTX,N) \ 1697 (df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N) 1698#define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N) 1699 1700/* ORIGINAL_REGNO holds the number the register originally had; for a 1701 pseudo register turned into a hard reg this will hold the old pseudo 1702 register number. */ 1703#define ORIGINAL_REGNO(RTX) \ 1704 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno) 1705 1706/* Force the REGNO macro to only be used on the lhs. */ 1707static inline unsigned int 1708rhs_regno (const_rtx x) 1709{ 1710 return XCUINT (x, 0, REG); 1711} 1712 1713 1714/* 1 if RTX is a reg or parallel that is the current function's return 1715 value. */ 1716#define REG_FUNCTION_VALUE_P(RTX) \ 1717 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 1718 1719/* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 1720#define REG_USERVAR_P(RTX) \ 1721 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil) 1722 1723/* 1 if RTX is a reg that holds a pointer value. */ 1724#define REG_POINTER(RTX) \ 1725 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related) 1726 1727/* 1 if RTX is a mem that holds a pointer value. */ 1728#define MEM_POINTER(RTX) \ 1729 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related) 1730 1731/* 1 if the given register REG corresponds to a hard register. */ 1732#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1733 1734/* 1 if the given register number REG_NO corresponds to a hard register. */ 1735#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1736 1737/* For a CONST_INT rtx, INTVAL extracts the integer. */ 1738#define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT) 1739#define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1740 1741/* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of 1742 elements actually needed to represent the constant. 1743 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least 1744 significant HOST_WIDE_INT. */ 1745#define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT) 1746#define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX) 1747#define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N) 1748 1749/* For a CONST_DOUBLE: 1750#if TARGET_SUPPORTS_WIDE_INT == 0 1751 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1752 low-order word and ..._HIGH the high-order. 1753#endif 1754 For a float, there is a REAL_VALUE_TYPE structure, and 1755 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1756#define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1757#define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1758#define CONST_DOUBLE_REAL_VALUE(r) \ 1759 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1760 1761#define CONST_FIXED_VALUE(r) \ 1762 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode)) 1763#define CONST_FIXED_VALUE_HIGH(r) \ 1764 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high)) 1765#define CONST_FIXED_VALUE_LOW(r) \ 1766 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low)) 1767 1768/* For a CONST_VECTOR, return element #n. */ 1769#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1770 1771/* For a CONST_VECTOR, return the number of elements in a vector. */ 1772#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1773 1774/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1775 SUBREG_BYTE extracts the byte-number. */ 1776 1777#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1778#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1779 1780/* in rtlanal.c */ 1781/* Return the right cost to give to an operation 1782 to make the cost of the corresponding register-to-register instruction 1783 N times that of a fast register-to-register instruction. */ 1784#define COSTS_N_INSNS(N) ((N) * 4) 1785 1786/* Maximum cost of an rtl expression. This value has the special meaning 1787 not to use an rtx with this cost under any circumstances. */ 1788#define MAX_COST INT_MAX 1789 1790/* A structure to hold all available cost information about an rtl 1791 expression. */ 1792struct full_rtx_costs 1793{ 1794 int speed; 1795 int size; 1796}; 1797 1798/* Initialize a full_rtx_costs structure C to the maximum cost. */ 1799static inline void 1800init_costs_to_max (struct full_rtx_costs *c) 1801{ 1802 c->speed = MAX_COST; 1803 c->size = MAX_COST; 1804} 1805 1806/* Initialize a full_rtx_costs structure C to zero cost. */ 1807static inline void 1808init_costs_to_zero (struct full_rtx_costs *c) 1809{ 1810 c->speed = 0; 1811 c->size = 0; 1812} 1813 1814/* Compare two full_rtx_costs structures A and B, returning true 1815 if A < B when optimizing for speed. */ 1816static inline bool 1817costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b, 1818 bool speed) 1819{ 1820 if (speed) 1821 return (a->speed < b->speed 1822 || (a->speed == b->speed && a->size < b->size)); 1823 else 1824 return (a->size < b->size 1825 || (a->size == b->size && a->speed < b->speed)); 1826} 1827 1828/* Increase both members of the full_rtx_costs structure C by the 1829 cost of N insns. */ 1830static inline void 1831costs_add_n_insns (struct full_rtx_costs *c, int n) 1832{ 1833 c->speed += COSTS_N_INSNS (n); 1834 c->size += COSTS_N_INSNS (n); 1835} 1836 1837/* Describes the shape of a subreg: 1838 1839 inner_mode == the mode of the SUBREG_REG 1840 offset == the SUBREG_BYTE 1841 outer_mode == the mode of the SUBREG itself. */ 1842struct subreg_shape { 1843 subreg_shape (machine_mode, unsigned int, machine_mode); 1844 bool operator == (const subreg_shape &) const; 1845 bool operator != (const subreg_shape &) const; 1846 unsigned int unique_id () const; 1847 1848 machine_mode inner_mode; 1849 unsigned int offset; 1850 machine_mode outer_mode; 1851}; 1852 1853inline 1854subreg_shape::subreg_shape (machine_mode inner_mode_in, 1855 unsigned int offset_in, 1856 machine_mode outer_mode_in) 1857 : inner_mode (inner_mode_in), offset (offset_in), outer_mode (outer_mode_in) 1858{} 1859 1860inline bool 1861subreg_shape::operator == (const subreg_shape &other) const 1862{ 1863 return (inner_mode == other.inner_mode 1864 && offset == other.offset 1865 && outer_mode == other.outer_mode); 1866} 1867 1868inline bool 1869subreg_shape::operator != (const subreg_shape &other) const 1870{ 1871 return !operator == (other); 1872} 1873 1874/* Return an integer that uniquely identifies this shape. Structures 1875 like rtx_def assume that a mode can fit in an 8-bit bitfield and no 1876 current mode is anywhere near being 65536 bytes in size, so the 1877 id comfortably fits in an int. */ 1878 1879inline unsigned int 1880subreg_shape::unique_id () const 1881{ 1882 STATIC_ASSERT (MAX_MACHINE_MODE <= 256); 1883 return (int) inner_mode + ((int) outer_mode << 8) + (offset << 16); 1884} 1885 1886/* Return the shape of a SUBREG rtx. */ 1887 1888static inline subreg_shape 1889shape_of_subreg (const_rtx x) 1890{ 1891 return subreg_shape (GET_MODE (SUBREG_REG (x)), 1892 SUBREG_BYTE (x), GET_MODE (x)); 1893} 1894 1895/* Information about an address. This structure is supposed to be able 1896 to represent all supported target addresses. Please extend it if it 1897 is not yet general enough. */ 1898struct address_info { 1899 /* The mode of the value being addressed, or VOIDmode if this is 1900 a load-address operation with no known address mode. */ 1901 machine_mode mode; 1902 1903 /* The address space. */ 1904 addr_space_t as; 1905 1906 /* A pointer to the top-level address. */ 1907 rtx *outer; 1908 1909 /* A pointer to the inner address, after all address mutations 1910 have been stripped from the top-level address. It can be one 1911 of the following: 1912 1913 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null. 1914 1915 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP 1916 points to the step value, depending on whether the step is variable 1917 or constant respectively. SEGMENT is null. 1918 1919 - A plain sum of the form SEGMENT + BASE + INDEX + DISP, 1920 with null fields evaluating to 0. */ 1921 rtx *inner; 1922 1923 /* Components that make up *INNER. Each one may be null or nonnull. 1924 When nonnull, their meanings are as follows: 1925 1926 - *SEGMENT is the "segment" of memory to which the address refers. 1927 This value is entirely target-specific and is only called a "segment" 1928 because that's its most typical use. It contains exactly one UNSPEC, 1929 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need 1930 reloading. 1931 1932 - *BASE is a variable expression representing a base address. 1933 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM. 1934 1935 - *INDEX is a variable expression representing an index value. 1936 It may be a scaled expression, such as a MULT. It has exactly 1937 one REG, SUBREG or MEM, pointed to by INDEX_TERM. 1938 1939 - *DISP is a constant, possibly mutated. DISP_TERM points to the 1940 unmutated RTX_CONST_OBJ. */ 1941 rtx *segment; 1942 rtx *base; 1943 rtx *index; 1944 rtx *disp; 1945 1946 rtx *segment_term; 1947 rtx *base_term; 1948 rtx *index_term; 1949 rtx *disp_term; 1950 1951 /* In a {PRE,POST}_MODIFY address, this points to a second copy 1952 of BASE_TERM, otherwise it is null. */ 1953 rtx *base_term2; 1954 1955 /* ADDRESS if this structure describes an address operand, MEM if 1956 it describes a MEM address. */ 1957 enum rtx_code addr_outer_code; 1958 1959 /* If BASE is nonnull, this is the code of the rtx that contains it. */ 1960 enum rtx_code base_outer_code; 1961 1962 /* True if this is an RTX_AUTOINC address. */ 1963 bool autoinc_p; 1964}; 1965 1966/* This is used to bundle an rtx and a mode together so that the pair 1967 can be used with the wi:: routines. If we ever put modes into rtx 1968 integer constants, this should go away and then just pass an rtx in. */ 1969typedef std::pair <rtx, machine_mode> rtx_mode_t; 1970 1971namespace wi 1972{ 1973 template <> 1974 struct int_traits <rtx_mode_t> 1975 { 1976 static const enum precision_type precision_type = VAR_PRECISION; 1977 static const bool host_dependent_precision = false; 1978 /* This ought to be true, except for the special case that BImode 1979 is canonicalized to STORE_FLAG_VALUE, which might be 1. */ 1980 static const bool is_sign_extended = false; 1981 static unsigned int get_precision (const rtx_mode_t &); 1982 static wi::storage_ref decompose (HOST_WIDE_INT *, unsigned int, 1983 const rtx_mode_t &); 1984 }; 1985} 1986 1987inline unsigned int 1988wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x) 1989{ 1990 gcc_checking_assert (x.second != BLKmode && x.second != VOIDmode); 1991 return GET_MODE_PRECISION (x.second); 1992} 1993 1994inline wi::storage_ref 1995wi::int_traits <rtx_mode_t>::decompose (HOST_WIDE_INT *, 1996 unsigned int precision, 1997 const rtx_mode_t &x) 1998{ 1999 gcc_checking_assert (precision == get_precision (x)); 2000 switch (GET_CODE (x.first)) 2001 { 2002 case CONST_INT: 2003 if (precision < HOST_BITS_PER_WIDE_INT) 2004 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many 2005 targets is 1 rather than -1. */ 2006 gcc_checking_assert (INTVAL (x.first) 2007 == sext_hwi (INTVAL (x.first), precision) 2008 || (x.second == BImode && INTVAL (x.first) == 1)); 2009 2010 return wi::storage_ref (&INTVAL (x.first), 1, precision); 2011 2012 case CONST_WIDE_INT: 2013 return wi::storage_ref (&CONST_WIDE_INT_ELT (x.first, 0), 2014 CONST_WIDE_INT_NUNITS (x.first), precision); 2015 2016#if TARGET_SUPPORTS_WIDE_INT == 0 2017 case CONST_DOUBLE: 2018 return wi::storage_ref (&CONST_DOUBLE_LOW (x.first), 2, precision); 2019#endif 2020 2021 default: 2022 gcc_unreachable (); 2023 } 2024} 2025 2026namespace wi 2027{ 2028 hwi_with_prec shwi (HOST_WIDE_INT, machine_mode mode); 2029 wide_int min_value (machine_mode, signop); 2030 wide_int max_value (machine_mode, signop); 2031} 2032 2033inline wi::hwi_with_prec 2034wi::shwi (HOST_WIDE_INT val, machine_mode mode) 2035{ 2036 return shwi (val, GET_MODE_PRECISION (mode)); 2037} 2038 2039/* Produce the smallest number that is represented in MODE. The precision 2040 is taken from MODE and the sign from SGN. */ 2041inline wide_int 2042wi::min_value (machine_mode mode, signop sgn) 2043{ 2044 return min_value (GET_MODE_PRECISION (mode), sgn); 2045} 2046 2047/* Produce the largest number that is represented in MODE. The precision 2048 is taken from MODE and the sign from SGN. */ 2049inline wide_int 2050wi::max_value (machine_mode mode, signop sgn) 2051{ 2052 return max_value (GET_MODE_PRECISION (mode), sgn); 2053} 2054 2055extern void init_rtlanal (void); 2056extern int rtx_cost (rtx, enum rtx_code, int, bool); 2057extern int address_cost (rtx, machine_mode, addr_space_t, bool); 2058extern void get_full_rtx_cost (rtx, enum rtx_code, int, 2059 struct full_rtx_costs *); 2060extern unsigned int subreg_lsb (const_rtx); 2061extern unsigned int subreg_lsb_1 (machine_mode, machine_mode, 2062 unsigned int); 2063extern unsigned int subreg_regno_offset (unsigned int, machine_mode, 2064 unsigned int, machine_mode); 2065extern bool subreg_offset_representable_p (unsigned int, machine_mode, 2066 unsigned int, machine_mode); 2067extern unsigned int subreg_regno (const_rtx); 2068extern int simplify_subreg_regno (unsigned int, machine_mode, 2069 unsigned int, machine_mode); 2070extern unsigned int subreg_nregs (const_rtx); 2071extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx); 2072extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, machine_mode); 2073extern unsigned int num_sign_bit_copies (const_rtx, machine_mode); 2074extern bool constant_pool_constant_p (rtx); 2075extern bool truncated_to_mode (machine_mode, const_rtx); 2076extern int low_bitmask_len (machine_mode, unsigned HOST_WIDE_INT); 2077extern void split_double (rtx, rtx *, rtx *); 2078extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0); 2079extern void decompose_address (struct address_info *, rtx *, 2080 machine_mode, addr_space_t, enum rtx_code); 2081extern void decompose_lea_address (struct address_info *, rtx *); 2082extern void decompose_mem_address (struct address_info *, rtx); 2083extern void update_address (struct address_info *); 2084extern HOST_WIDE_INT get_index_scale (const struct address_info *); 2085extern enum rtx_code get_index_code (const struct address_info *); 2086 2087#ifndef GENERATOR_FILE 2088/* Return the cost of SET X. SPEED_P is true if optimizing for speed 2089 rather than size. */ 2090 2091static inline int 2092set_rtx_cost (rtx x, bool speed_p) 2093{ 2094 return rtx_cost (x, INSN, 4, speed_p); 2095} 2096 2097/* Like set_rtx_cost, but return both the speed and size costs in C. */ 2098 2099static inline void 2100get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c) 2101{ 2102 get_full_rtx_cost (x, INSN, 4, c); 2103} 2104 2105/* Return the cost of moving X into a register, relative to the cost 2106 of a register move. SPEED_P is true if optimizing for speed rather 2107 than size. */ 2108 2109static inline int 2110set_src_cost (rtx x, bool speed_p) 2111{ 2112 return rtx_cost (x, SET, 1, speed_p); 2113} 2114 2115/* Like set_src_cost, but return both the speed and size costs in C. */ 2116 2117static inline void 2118get_full_set_src_cost (rtx x, struct full_rtx_costs *c) 2119{ 2120 get_full_rtx_cost (x, SET, 1, c); 2121} 2122#endif 2123 2124/* 1 if RTX is a subreg containing a reg that is already known to be 2125 sign- or zero-extended from the mode of the subreg to the mode of 2126 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 2127 extension. 2128 2129 When used as a LHS, is means that this extension must be done 2130 when assigning to SUBREG_REG. */ 2131 2132#define SUBREG_PROMOTED_VAR_P(RTX) \ 2133 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 2134 2135/* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case 2136 this gives the necessary extensions: 2137 0 - signed (SPR_SIGNED) 2138 1 - normal unsigned (SPR_UNSIGNED) 2139 2 - value is both sign and unsign extended for mode 2140 (SPR_SIGNED_AND_UNSIGNED). 2141 -1 - pointer unsigned, which most often can be handled like unsigned 2142 extension, except for generating instructions where we need to 2143 emit special code (ptr_extend insns) on some architectures 2144 (SPR_POINTER). */ 2145 2146const int SRP_POINTER = -1; 2147const int SRP_SIGNED = 0; 2148const int SRP_UNSIGNED = 1; 2149const int SRP_SIGNED_AND_UNSIGNED = 2; 2150 2151/* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */ 2152#define SUBREG_PROMOTED_SET(RTX, VAL) \ 2153do { \ 2154 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \ 2155 (RTX), SUBREG); \ 2156 switch (VAL) \ 2157 { \ 2158 case SRP_POINTER: \ 2159 _rtx->volatil = 0; \ 2160 _rtx->unchanging = 0; \ 2161 break; \ 2162 case SRP_SIGNED: \ 2163 _rtx->volatil = 0; \ 2164 _rtx->unchanging = 1; \ 2165 break; \ 2166 case SRP_UNSIGNED: \ 2167 _rtx->volatil = 1; \ 2168 _rtx->unchanging = 0; \ 2169 break; \ 2170 case SRP_SIGNED_AND_UNSIGNED: \ 2171 _rtx->volatil = 1; \ 2172 _rtx->unchanging = 1; \ 2173 break; \ 2174 } \ 2175} while (0) 2176 2177/* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(), 2178 including SRP_SIGNED_AND_UNSIGNED if promoted for 2179 both signed and unsigned. */ 2180#define SUBREG_PROMOTED_GET(RTX) \ 2181 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\ 2182 + (RTX)->unchanging - 1) 2183 2184/* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */ 2185#define SUBREG_PROMOTED_SIGN(RTX) \ 2186 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\ 2187 : (RTX)->unchanging - 1) 2188 2189/* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted 2190 for SIGNED type. */ 2191#define SUBREG_PROMOTED_SIGNED_P(RTX) \ 2192 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging) 2193 2194/* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted 2195 for UNSIGNED type. */ 2196#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 2197 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) 2198 2199/* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */ 2200#define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \ 2201((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \ 2202 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \ 2203 : SUBREG_PROMOTED_UNSIGNED_P (RTX)) 2204 2205/* True if the subreg was generated by LRA for reload insns. Such 2206 subregs are valid only during LRA. */ 2207#define LRA_SUBREG_P(RTX) \ 2208 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump) 2209 2210/* True if call is instrumented by Pointer Bounds Checker. */ 2211#define CALL_EXPR_WITH_BOUNDS_P(RTX) \ 2212 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump) 2213 2214/* Access various components of an ASM_OPERANDS rtx. */ 2215 2216#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 2217#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 2218#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 2219#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 2220#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 2221#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 2222#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 2223#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 2224 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 2225#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 2226 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 2227#define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 2228 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 2229#define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS) 2230#define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS) 2231#define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS) 2232#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS) 2233#define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT) 2234 2235/* 1 if RTX is a mem that is statically allocated in read-only memory. */ 2236#define MEM_READONLY_P(RTX) \ 2237 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging) 2238 2239/* 1 if RTX is a mem and we should keep the alias set for this mem 2240 unchanged when we access a component. Set to 1, or example, when we 2241 are already in a non-addressable component of an aggregate. */ 2242#define MEM_KEEP_ALIAS_SET_P(RTX) \ 2243 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 2244 2245/* 1 if RTX is a mem or asm_operand for a volatile reference. */ 2246#define MEM_VOLATILE_P(RTX) \ 2247 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 2248 ASM_INPUT)->volatil) 2249 2250/* 1 if RTX is a mem that cannot trap. */ 2251#define MEM_NOTRAP_P(RTX) \ 2252 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call) 2253 2254/* The memory attribute block. We provide access macros for each value 2255 in the block and provide defaults if none specified. */ 2256#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 2257 2258/* The register attribute block. We provide access macros for each value 2259 in the block and provide defaults if none specified. */ 2260#define REG_ATTRS(RTX) X0REGATTR (RTX, 1) 2261 2262#ifndef GENERATOR_FILE 2263/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 2264 set, and may alias anything. Otherwise, the MEM can only alias 2265 MEMs in a conflicting alias set. This value is set in a 2266 language-dependent manner in the front-end, and should not be 2267 altered in the back-end. These set numbers are tested with 2268 alias_sets_conflict_p. */ 2269#define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias) 2270 2271/* For a MEM rtx, the decl it is known to refer to, if it is known to 2272 refer to part of a DECL. It may also be a COMPONENT_REF. */ 2273#define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr) 2274 2275/* For a MEM rtx, true if its MEM_OFFSET is known. */ 2276#define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p) 2277 2278/* For a MEM rtx, the offset from the start of MEM_EXPR. */ 2279#define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset) 2280 2281/* For a MEM rtx, the address space. */ 2282#define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace) 2283 2284/* For a MEM rtx, true if its MEM_SIZE is known. */ 2285#define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p) 2286 2287/* For a MEM rtx, the size in bytes of the MEM. */ 2288#define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size) 2289 2290/* For a MEM rtx, the alignment in bits. We can use the alignment of the 2291 mode as a default when STRICT_ALIGNMENT, but not if not. */ 2292#define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align) 2293#else 2294#define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC 2295#endif 2296 2297/* For a REG rtx, the decl it is known to refer to, if it is known to 2298 refer to part of a DECL. */ 2299#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 2300 2301/* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 2302 HOST_WIDE_INT. */ 2303#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 2304 2305/* Copy the attributes that apply to memory locations from RHS to LHS. */ 2306#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 2307 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 2308 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 2309 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 2310 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 2311 MEM_POINTER (LHS) = MEM_POINTER (RHS), \ 2312 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 2313 2314/* 1 if RTX is a label_ref for a nonlocal label. */ 2315/* Likewise in an expr_list for a REG_LABEL_OPERAND or 2316 REG_LABEL_TARGET note. */ 2317#define LABEL_REF_NONLOCAL_P(RTX) \ 2318 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil) 2319 2320/* 1 if RTX is a code_label that should always be considered to be needed. */ 2321#define LABEL_PRESERVE_P(RTX) \ 2322 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 2323 2324/* During sched, 1 if RTX is an insn that must be scheduled together 2325 with the preceding insn. */ 2326#define SCHED_GROUP_P(RTX) \ 2327 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \ 2328 JUMP_INSN, CALL_INSN)->in_struct) 2329 2330/* For a SET rtx, SET_DEST is the place that is set 2331 and SET_SRC is the value it is set to. */ 2332#define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER) 2333#define SET_SRC(RTX) XCEXP (RTX, 1, SET) 2334#define SET_IS_RETURN_P(RTX) \ 2335 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump) 2336 2337/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 2338#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 2339#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 2340 2341/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 2342 conditionally executing the code on, COND_EXEC_CODE is the code 2343 to execute if the condition is true. */ 2344#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 2345#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 2346 2347/* 1 if RTX is a symbol_ref that addresses this function's rtl 2348 constants pool. */ 2349#define CONSTANT_POOL_ADDRESS_P(RTX) \ 2350 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 2351 2352/* 1 if RTX is a symbol_ref that addresses a value in the file's 2353 tree constant pool. This information is private to varasm.c. */ 2354#define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 2355 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \ 2356 (RTX), SYMBOL_REF)->frame_related) 2357 2358/* Used if RTX is a symbol_ref, for machine-specific purposes. */ 2359#define SYMBOL_REF_FLAG(RTX) \ 2360 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 2361 2362/* 1 if RTX is a symbol_ref that has been the library function in 2363 emit_library_call. */ 2364#define SYMBOL_REF_USED(RTX) \ 2365 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 2366 2367/* 1 if RTX is a symbol_ref for a weak symbol. */ 2368#define SYMBOL_REF_WEAK(RTX) \ 2369 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 2370 2371/* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 2372 SYMBOL_REF_CONSTANT. */ 2373#define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1) 2374 2375/* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 2376 pool symbol. */ 2377#define SET_SYMBOL_REF_DECL(RTX, DECL) \ 2378 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL)) 2379 2380/* The tree (decl or constant) associated with the symbol, or null. */ 2381#define SYMBOL_REF_DECL(RTX) \ 2382 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1)) 2383 2384/* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 2385#define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 2386 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C)) 2387 2388/* The rtx constant pool entry for a symbol, or null. */ 2389#define SYMBOL_REF_CONSTANT(RTX) \ 2390 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL) 2391 2392/* A set of flags on a symbol_ref that are, in some respects, redundant with 2393 information derivable from the tree decl associated with this symbol. 2394 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 2395 decl. In some cases this is a bug. But beyond that, it's nice to cache 2396 this information to avoid recomputing it. Finally, this allows space for 2397 the target to store more than one bit of information, as with 2398 SYMBOL_REF_FLAG. */ 2399#define SYMBOL_REF_FLAGS(RTX) \ 2400 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \ 2401 ->u2.symbol_ref_flags) 2402 2403/* These flags are common enough to be defined for all targets. They 2404 are computed by the default version of targetm.encode_section_info. */ 2405 2406/* Set if this symbol is a function. */ 2407#define SYMBOL_FLAG_FUNCTION (1 << 0) 2408#define SYMBOL_REF_FUNCTION_P(RTX) \ 2409 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 2410/* Set if targetm.binds_local_p is true. */ 2411#define SYMBOL_FLAG_LOCAL (1 << 1) 2412#define SYMBOL_REF_LOCAL_P(RTX) \ 2413 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 2414/* Set if targetm.in_small_data_p is true. */ 2415#define SYMBOL_FLAG_SMALL (1 << 2) 2416#define SYMBOL_REF_SMALL_P(RTX) \ 2417 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 2418/* The three-bit field at [5:3] is true for TLS variables; use 2419 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 2420#define SYMBOL_FLAG_TLS_SHIFT 3 2421#define SYMBOL_REF_TLS_MODEL(RTX) \ 2422 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 2423/* Set if this symbol is not defined in this translation unit. */ 2424#define SYMBOL_FLAG_EXTERNAL (1 << 6) 2425#define SYMBOL_REF_EXTERNAL_P(RTX) \ 2426 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 2427/* Set if this symbol has a block_symbol structure associated with it. */ 2428#define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 2429#define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 2430 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 2431/* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 2432 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 2433#define SYMBOL_FLAG_ANCHOR (1 << 8) 2434#define SYMBOL_REF_ANCHOR_P(RTX) \ 2435 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 2436 2437/* Subsequent bits are available for the target to use. */ 2438#define SYMBOL_FLAG_MACH_DEP_SHIFT 9 2439#define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 2440 2441/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 2442 structure to which the symbol belongs, or NULL if it has not been 2443 assigned a block. */ 2444#define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 2445 2446/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 2447 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 2448 RTX has not yet been assigned to a block, or it has not been given an 2449 offset within that block. */ 2450#define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 2451 2452/* True if RTX is flagged to be a scheduling barrier. */ 2453#define PREFETCH_SCHEDULE_BARRIER_P(RTX) \ 2454 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil) 2455 2456/* Indicate whether the machine has any sort of auto increment addressing. 2457 If not, we can avoid checking for REG_INC notes. */ 2458 2459#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \ 2460 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \ 2461 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \ 2462 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG)) 2463#define AUTO_INC_DEC 2464#endif 2465 2466/* Define a macro to look for REG_INC notes, 2467 but save time on machines where they never exist. */ 2468 2469#ifdef AUTO_INC_DEC 2470#define FIND_REG_INC_NOTE(INSN, REG) \ 2471 ((REG) != NULL_RTX && REG_P ((REG)) \ 2472 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 2473 : find_reg_note ((INSN), REG_INC, (REG))) 2474#else 2475#define FIND_REG_INC_NOTE(INSN, REG) 0 2476#endif 2477 2478#ifndef HAVE_PRE_INCREMENT 2479#define HAVE_PRE_INCREMENT 0 2480#endif 2481 2482#ifndef HAVE_PRE_DECREMENT 2483#define HAVE_PRE_DECREMENT 0 2484#endif 2485 2486#ifndef HAVE_POST_INCREMENT 2487#define HAVE_POST_INCREMENT 0 2488#endif 2489 2490#ifndef HAVE_POST_DECREMENT 2491#define HAVE_POST_DECREMENT 0 2492#endif 2493 2494#ifndef HAVE_POST_MODIFY_DISP 2495#define HAVE_POST_MODIFY_DISP 0 2496#endif 2497 2498#ifndef HAVE_POST_MODIFY_REG 2499#define HAVE_POST_MODIFY_REG 0 2500#endif 2501 2502#ifndef HAVE_PRE_MODIFY_DISP 2503#define HAVE_PRE_MODIFY_DISP 0 2504#endif 2505 2506#ifndef HAVE_PRE_MODIFY_REG 2507#define HAVE_PRE_MODIFY_REG 0 2508#endif 2509 2510 2511/* Some architectures do not have complete pre/post increment/decrement 2512 instruction sets, or only move some modes efficiently. These macros 2513 allow us to tune autoincrement generation. */ 2514 2515#ifndef USE_LOAD_POST_INCREMENT 2516#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 2517#endif 2518 2519#ifndef USE_LOAD_POST_DECREMENT 2520#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 2521#endif 2522 2523#ifndef USE_LOAD_PRE_INCREMENT 2524#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 2525#endif 2526 2527#ifndef USE_LOAD_PRE_DECREMENT 2528#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 2529#endif 2530 2531#ifndef USE_STORE_POST_INCREMENT 2532#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 2533#endif 2534 2535#ifndef USE_STORE_POST_DECREMENT 2536#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 2537#endif 2538 2539#ifndef USE_STORE_PRE_INCREMENT 2540#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 2541#endif 2542 2543#ifndef USE_STORE_PRE_DECREMENT 2544#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 2545#endif 2546 2547/* Nonzero when we are generating CONCATs. */ 2548extern int generating_concat_p; 2549 2550/* Nonzero when we are expanding trees to RTL. */ 2551extern int currently_expanding_to_rtl; 2552 2553/* Generally useful functions. */ 2554 2555/* In explow.c */ 2556extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, machine_mode); 2557extern rtx plus_constant (machine_mode, rtx, HOST_WIDE_INT, bool = false); 2558 2559/* In rtl.c */ 2560extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 2561#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 2562extern rtx rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL, int); 2563#define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ) 2564#define const_wide_int_alloc(NWORDS) \ 2565 rtx_alloc_v (CONST_WIDE_INT, \ 2566 (sizeof (struct hwivec_def) \ 2567 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \ 2568 2569extern rtvec rtvec_alloc (int); 2570extern rtvec shallow_copy_rtvec (rtvec); 2571extern bool shared_const_p (const_rtx); 2572extern rtx copy_rtx (rtx); 2573extern void dump_rtx_statistics (void); 2574 2575/* In emit-rtl.c */ 2576extern rtx copy_rtx_if_shared (rtx); 2577 2578/* In rtl.c */ 2579extern unsigned int rtx_size (const_rtx); 2580extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL); 2581#define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 2582extern int rtx_equal_p (const_rtx, const_rtx); 2583 2584/* In emit-rtl.c */ 2585extern rtvec gen_rtvec_v (int, rtx *); 2586extern rtvec gen_rtvec_v (int, rtx_insn **); 2587extern rtx gen_reg_rtx (machine_mode); 2588extern rtx gen_rtx_REG_offset (rtx, machine_mode, unsigned int, int); 2589extern rtx gen_reg_rtx_offset (rtx, machine_mode, int); 2590extern rtx gen_reg_rtx_and_attrs (rtx); 2591extern rtx_code_label *gen_label_rtx (void); 2592extern rtx gen_lowpart_common (machine_mode, rtx); 2593 2594/* In cse.c */ 2595extern rtx gen_lowpart_if_possible (machine_mode, rtx); 2596 2597/* In emit-rtl.c */ 2598extern rtx gen_highpart (machine_mode, rtx); 2599extern rtx gen_highpart_mode (machine_mode, machine_mode, rtx); 2600extern rtx operand_subword (rtx, unsigned int, int, machine_mode); 2601 2602/* In emit-rtl.c */ 2603extern rtx operand_subword_force (rtx, unsigned int, machine_mode); 2604extern bool paradoxical_subreg_p (const_rtx); 2605extern int subreg_lowpart_p (const_rtx); 2606extern unsigned int subreg_lowpart_offset (machine_mode, 2607 machine_mode); 2608extern unsigned int subreg_highpart_offset (machine_mode, 2609 machine_mode); 2610extern int byte_lowpart_offset (machine_mode, machine_mode); 2611extern rtx make_safe_from (rtx, rtx); 2612extern rtx convert_memory_address_addr_space (machine_mode, rtx, 2613 addr_space_t); 2614#define convert_memory_address(to_mode,x) \ 2615 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC) 2616extern const char *get_insn_name (int); 2617extern rtx_insn *get_last_insn_anywhere (void); 2618extern rtx_insn *get_first_nonnote_insn (void); 2619extern rtx_insn *get_last_nonnote_insn (void); 2620extern void start_sequence (void); 2621extern void push_to_sequence (rtx_insn *); 2622extern void push_to_sequence2 (rtx_insn *, rtx_insn *); 2623extern void end_sequence (void); 2624#if TARGET_SUPPORTS_WIDE_INT == 0 2625extern double_int rtx_to_double_int (const_rtx); 2626#endif 2627extern void cwi_output_hex (FILE *, const_rtx); 2628#ifndef GENERATOR_FILE 2629extern rtx immed_wide_int_const (const wide_int_ref &, machine_mode); 2630#endif 2631#if TARGET_SUPPORTS_WIDE_INT == 0 2632extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 2633 machine_mode); 2634#endif 2635 2636/* In loop-iv.c */ 2637 2638extern rtx lowpart_subreg (machine_mode, rtx, machine_mode); 2639 2640/* In varasm.c */ 2641extern rtx force_const_mem (machine_mode, rtx); 2642 2643/* In varasm.c */ 2644 2645struct function; 2646extern rtx get_pool_constant (const_rtx); 2647extern rtx get_pool_constant_mark (rtx, bool *); 2648extern machine_mode get_pool_mode (const_rtx); 2649extern rtx simplify_subtraction (rtx); 2650extern void decide_function_section (tree); 2651 2652/* In emit-rtl.c */ 2653extern rtx_insn *emit_insn_before (rtx, rtx); 2654extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block); 2655extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, int); 2656extern rtx_insn *emit_jump_insn_before (rtx, rtx); 2657extern rtx_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *); 2658extern rtx_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *, int); 2659extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *); 2660extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *); 2661extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, int); 2662extern rtx_insn *emit_debug_insn_before (rtx, rtx); 2663extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx); 2664extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx, int); 2665extern rtx_barrier *emit_barrier_before (rtx); 2666extern rtx_insn *emit_label_before (rtx, rtx_insn *); 2667extern rtx_note *emit_note_before (enum insn_note, rtx); 2668extern rtx_insn *emit_insn_after (rtx, rtx); 2669extern rtx_insn *emit_insn_after_noloc (rtx, rtx, basic_block); 2670extern rtx_insn *emit_insn_after_setloc (rtx, rtx, int); 2671extern rtx_insn *emit_jump_insn_after (rtx, rtx); 2672extern rtx_insn *emit_jump_insn_after_noloc (rtx, rtx); 2673extern rtx_insn *emit_jump_insn_after_setloc (rtx, rtx, int); 2674extern rtx_insn *emit_call_insn_after (rtx, rtx); 2675extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx); 2676extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx, int); 2677extern rtx_insn *emit_debug_insn_after (rtx, rtx); 2678extern rtx_insn *emit_debug_insn_after_noloc (rtx, rtx); 2679extern rtx_insn *emit_debug_insn_after_setloc (rtx, rtx, int); 2680extern rtx_barrier *emit_barrier_after (rtx); 2681extern rtx_insn *emit_label_after (rtx, rtx_insn *); 2682extern rtx_note *emit_note_after (enum insn_note, rtx); 2683extern rtx_insn *emit_insn (rtx); 2684extern rtx_insn *emit_debug_insn (rtx); 2685extern rtx_insn *emit_jump_insn (rtx); 2686extern rtx_insn *emit_call_insn (rtx); 2687extern rtx_insn *emit_label (rtx); 2688extern rtx_jump_table_data *emit_jump_table_data (rtx); 2689extern rtx_barrier *emit_barrier (void); 2690extern rtx_note *emit_note (enum insn_note); 2691extern rtx_note *emit_note_copy (rtx_note *); 2692extern rtx_insn *gen_clobber (rtx); 2693extern rtx_insn *emit_clobber (rtx); 2694extern rtx_insn *gen_use (rtx); 2695extern rtx_insn *emit_use (rtx); 2696extern rtx_insn *make_insn_raw (rtx); 2697extern void add_function_usage_to (rtx, rtx); 2698extern rtx_call_insn *last_call_insn (void); 2699extern rtx_insn *previous_insn (rtx_insn *); 2700extern rtx_insn *next_insn (rtx_insn *); 2701extern rtx_insn *prev_nonnote_insn (rtx); 2702extern rtx_insn *prev_nonnote_insn_bb (rtx); 2703extern rtx_insn *next_nonnote_insn (rtx); 2704extern rtx_insn *next_nonnote_insn_bb (rtx_insn *); 2705extern rtx_insn *prev_nondebug_insn (rtx); 2706extern rtx_insn *next_nondebug_insn (rtx); 2707extern rtx_insn *prev_nonnote_nondebug_insn (rtx); 2708extern rtx_insn *next_nonnote_nondebug_insn (rtx); 2709extern rtx_insn *prev_real_insn (rtx); 2710extern rtx_insn *next_real_insn (rtx); 2711extern rtx_insn *prev_active_insn (rtx); 2712extern rtx_insn *next_active_insn (rtx); 2713extern int active_insn_p (const_rtx); 2714extern rtx_insn *next_cc0_user (rtx); 2715extern rtx_insn *prev_cc0_setter (rtx); 2716 2717/* In emit-rtl.c */ 2718extern int insn_line (const rtx_insn *); 2719extern const char * insn_file (const rtx_insn *); 2720extern tree insn_scope (const rtx_insn *); 2721extern expanded_location insn_location (const rtx_insn *); 2722extern location_t prologue_location, epilogue_location; 2723 2724/* In jump.c */ 2725extern enum rtx_code reverse_condition (enum rtx_code); 2726extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 2727extern enum rtx_code swap_condition (enum rtx_code); 2728extern enum rtx_code unsigned_condition (enum rtx_code); 2729extern enum rtx_code signed_condition (enum rtx_code); 2730extern void mark_jump_label (rtx, rtx_insn *, int); 2731 2732/* In jump.c */ 2733extern rtx_insn *delete_related_insns (rtx); 2734 2735/* In recog.c */ 2736extern rtx *find_constant_term_loc (rtx *); 2737 2738/* In emit-rtl.c */ 2739extern rtx_insn *try_split (rtx, rtx, int); 2740extern int split_branch_probability; 2741 2742/* In unknown file */ 2743extern rtx split_insns (rtx, rtx); 2744 2745/* In simplify-rtx.c */ 2746extern rtx simplify_const_unary_operation (enum rtx_code, machine_mode, 2747 rtx, machine_mode); 2748extern rtx simplify_unary_operation (enum rtx_code, machine_mode, rtx, 2749 machine_mode); 2750extern rtx simplify_const_binary_operation (enum rtx_code, machine_mode, 2751 rtx, rtx); 2752extern rtx simplify_binary_operation (enum rtx_code, machine_mode, rtx, 2753 rtx); 2754extern rtx simplify_ternary_operation (enum rtx_code, machine_mode, 2755 machine_mode, rtx, rtx, rtx); 2756extern rtx simplify_const_relational_operation (enum rtx_code, 2757 machine_mode, rtx, rtx); 2758extern rtx simplify_relational_operation (enum rtx_code, machine_mode, 2759 machine_mode, rtx, rtx); 2760extern rtx simplify_gen_binary (enum rtx_code, machine_mode, rtx, rtx); 2761extern rtx simplify_gen_unary (enum rtx_code, machine_mode, rtx, 2762 machine_mode); 2763extern rtx simplify_gen_ternary (enum rtx_code, machine_mode, 2764 machine_mode, rtx, rtx, rtx); 2765extern rtx simplify_gen_relational (enum rtx_code, machine_mode, 2766 machine_mode, rtx, rtx); 2767extern rtx simplify_subreg (machine_mode, rtx, machine_mode, 2768 unsigned int); 2769extern rtx simplify_gen_subreg (machine_mode, rtx, machine_mode, 2770 unsigned int); 2771extern rtx simplify_replace_fn_rtx (rtx, const_rtx, 2772 rtx (*fn) (rtx, const_rtx, void *), void *); 2773extern rtx simplify_replace_rtx (rtx, const_rtx, rtx); 2774extern rtx simplify_rtx (const_rtx); 2775extern rtx avoid_constant_pool_reference (rtx); 2776extern rtx delegitimize_mem_from_attrs (rtx); 2777extern bool mode_signbit_p (machine_mode, const_rtx); 2778extern bool val_signbit_p (machine_mode, unsigned HOST_WIDE_INT); 2779extern bool val_signbit_known_set_p (machine_mode, 2780 unsigned HOST_WIDE_INT); 2781extern bool val_signbit_known_clear_p (machine_mode, 2782 unsigned HOST_WIDE_INT); 2783 2784/* In reginfo.c */ 2785extern machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 2786 bool); 2787#ifdef HARD_CONST 2788extern const HARD_REG_SET &simplifiable_subregs (const subreg_shape &); 2789#endif 2790 2791/* In emit-rtl.c */ 2792extern rtx set_for_reg_notes (rtx); 2793extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 2794extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx); 2795extern void set_insn_deleted (rtx); 2796 2797/* Functions in rtlanal.c */ 2798 2799extern rtx single_set_2 (const rtx_insn *, const_rtx); 2800 2801/* Handle the cheap and common cases inline for performance. */ 2802 2803inline rtx single_set (const rtx_insn *insn) 2804{ 2805 if (!INSN_P (insn)) 2806 return NULL_RTX; 2807 2808 if (GET_CODE (PATTERN (insn)) == SET) 2809 return PATTERN (insn); 2810 2811 /* Defer to the more expensive case. */ 2812 return single_set_2 (insn, PATTERN (insn)); 2813} 2814 2815extern machine_mode get_address_mode (rtx mem); 2816extern int rtx_addr_can_trap_p (const_rtx); 2817extern bool nonzero_address_p (const_rtx); 2818extern int rtx_unstable_p (const_rtx); 2819extern bool rtx_varies_p (const_rtx, bool); 2820extern bool rtx_addr_varies_p (const_rtx, bool); 2821extern rtx get_call_rtx_from (rtx); 2822extern HOST_WIDE_INT get_integer_term (const_rtx); 2823extern rtx get_related_value (const_rtx); 2824extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT); 2825extern void split_const (rtx, rtx *, rtx *); 2826extern bool unsigned_reg_p (rtx); 2827extern int reg_mentioned_p (const_rtx, const_rtx); 2828extern int count_occurrences (const_rtx, const_rtx, int); 2829extern int reg_referenced_p (const_rtx, const_rtx); 2830extern int reg_used_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2831extern int reg_set_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2832extern int commutative_operand_precedence (rtx); 2833extern bool swap_commutative_operands_p (rtx, rtx); 2834extern int modified_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2835extern int no_labels_between_p (const rtx_insn *, const rtx_insn *); 2836extern int modified_in_p (const_rtx, const_rtx); 2837extern int reg_set_p (const_rtx, const_rtx); 2838extern int multiple_sets (const_rtx); 2839extern int set_noop_p (const_rtx); 2840extern int noop_move_p (const_rtx); 2841extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *); 2842extern int reg_overlap_mentioned_p (const_rtx, const_rtx); 2843extern const_rtx set_of (const_rtx, const_rtx); 2844extern void record_hard_reg_sets (rtx, const_rtx, void *); 2845extern void record_hard_reg_uses (rtx *, void *); 2846#ifdef HARD_CONST 2847extern void find_all_hard_regs (const_rtx, HARD_REG_SET *); 2848extern void find_all_hard_reg_sets (const_rtx, HARD_REG_SET *, bool); 2849#endif 2850extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *); 2851extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 2852extern int dead_or_set_p (const_rtx, const_rtx); 2853extern int dead_or_set_regno_p (const_rtx, unsigned int); 2854extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx); 2855extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int); 2856extern rtx find_reg_equal_equiv_note (const_rtx); 2857extern rtx find_constant_src (const rtx_insn *); 2858extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx); 2859extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int); 2860extern rtx alloc_reg_note (enum reg_note, rtx, rtx); 2861extern void add_reg_note (rtx, enum reg_note, rtx); 2862extern void add_int_reg_note (rtx, enum reg_note, int); 2863extern void add_shallow_copy_of_reg_note (rtx, rtx); 2864extern void remove_note (rtx, const_rtx); 2865extern void remove_reg_equal_equiv_notes (rtx); 2866extern void remove_reg_equal_equiv_notes_for_regno (unsigned int); 2867extern int side_effects_p (const_rtx); 2868extern int volatile_refs_p (const_rtx); 2869extern int volatile_insn_p (const_rtx); 2870extern int may_trap_p_1 (const_rtx, unsigned); 2871extern int may_trap_p (const_rtx); 2872extern int may_trap_or_fault_p (const_rtx); 2873extern bool can_throw_internal (const_rtx); 2874extern bool can_throw_external (const_rtx); 2875extern bool insn_could_throw_p (const_rtx); 2876extern bool insn_nothrow_p (const_rtx); 2877extern bool can_nonlocal_goto (const_rtx); 2878extern void copy_reg_eh_region_note_forward (rtx, rtx_insn *, rtx); 2879extern void copy_reg_eh_region_note_backward (rtx, rtx_insn *, rtx); 2880extern int inequality_comparisons_p (const_rtx); 2881extern rtx replace_rtx (rtx, rtx, rtx); 2882extern void replace_label (rtx *, rtx, rtx, bool); 2883extern void replace_label_in_insn (rtx_insn *, rtx, rtx, bool); 2884extern bool rtx_referenced_p (const_rtx, const_rtx); 2885extern bool tablejump_p (const rtx_insn *, rtx *, rtx_jump_table_data **); 2886extern int computed_jump_p (const_rtx); 2887extern bool tls_referenced_p (const_rtx); 2888 2889/* Overload for refers_to_regno_p for checking a single register. */ 2890inline bool 2891refers_to_regno_p (unsigned int regnum, const_rtx x, rtx* loc = NULL) 2892{ 2893 return refers_to_regno_p (regnum, regnum + 1, x, loc); 2894} 2895 2896/* Callback for for_each_inc_dec, to process the autoinc operation OP 2897 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is 2898 NULL. The callback is passed the same opaque ARG passed to 2899 for_each_inc_dec. Return zero to continue looking for other 2900 autoinc operations or any other value to interrupt the traversal and 2901 return that value to the caller of for_each_inc_dec. */ 2902typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src, 2903 rtx srcoff, void *arg); 2904extern int for_each_inc_dec (rtx, for_each_inc_dec_fn, void *arg); 2905 2906typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *, 2907 rtx *, rtx *); 2908extern int rtx_equal_p_cb (const_rtx, const_rtx, 2909 rtx_equal_p_callback_function); 2910 2911typedef int (*hash_rtx_callback_function) (const_rtx, machine_mode, rtx *, 2912 machine_mode *); 2913extern unsigned hash_rtx_cb (const_rtx, machine_mode, int *, int *, 2914 bool, hash_rtx_callback_function); 2915 2916extern rtx regno_use_in (unsigned int, rtx); 2917extern int auto_inc_p (const_rtx); 2918extern int in_expr_list_p (const_rtx, const_rtx); 2919extern void remove_node_from_expr_list (const_rtx, rtx_expr_list **); 2920extern void remove_node_from_insn_list (const rtx_insn *, rtx_insn_list **); 2921extern int loc_mentioned_in_p (rtx *, const_rtx); 2922extern rtx_insn *find_first_parameter_load (rtx_insn *, rtx_insn *); 2923extern bool keep_with_call_p (const rtx_insn *); 2924extern bool label_is_jump_target_p (const_rtx, const rtx_insn *); 2925extern int insn_rtx_cost (rtx, bool); 2926extern unsigned seq_cost (const rtx_insn *, bool); 2927 2928/* Given an insn and condition, return a canonical description of 2929 the test being made. */ 2930extern rtx canonicalize_condition (rtx_insn *, rtx, int, rtx_insn **, rtx, 2931 int, int); 2932 2933/* Given a JUMP_INSN, return a canonical description of the test 2934 being made. */ 2935extern rtx get_condition (rtx_insn *, rtx_insn **, int, int); 2936 2937/* Information about a subreg of a hard register. */ 2938struct subreg_info 2939{ 2940 /* Offset of first hard register involved in the subreg. */ 2941 int offset; 2942 /* Number of hard registers involved in the subreg. In the case of 2943 a paradoxical subreg, this is the number of registers that would 2944 be modified by writing to the subreg; some of them may be don't-care 2945 when reading from the subreg. */ 2946 int nregs; 2947 /* Whether this subreg can be represented as a hard reg with the new 2948 mode (by adding OFFSET to the original hard register). */ 2949 bool representable_p; 2950}; 2951 2952extern void subreg_get_info (unsigned int, machine_mode, 2953 unsigned int, machine_mode, 2954 struct subreg_info *); 2955 2956/* lists.c */ 2957 2958extern void free_EXPR_LIST_list (rtx_expr_list **); 2959extern void free_INSN_LIST_list (rtx_insn_list **); 2960extern void free_EXPR_LIST_node (rtx); 2961extern void free_INSN_LIST_node (rtx); 2962extern rtx_insn_list *alloc_INSN_LIST (rtx, rtx); 2963extern rtx_insn_list *copy_INSN_LIST (rtx_insn_list *); 2964extern rtx_insn_list *concat_INSN_LIST (rtx_insn_list *, rtx_insn_list *); 2965extern rtx_expr_list *alloc_EXPR_LIST (int, rtx, rtx); 2966extern void remove_free_INSN_LIST_elem (rtx_insn *, rtx_insn_list **); 2967extern rtx remove_list_elem (rtx, rtx *); 2968extern rtx_insn *remove_free_INSN_LIST_node (rtx_insn_list **); 2969extern rtx remove_free_EXPR_LIST_node (rtx_expr_list **); 2970 2971 2972/* reginfo.c */ 2973 2974/* Resize reg info. */ 2975extern bool resize_reg_info (void); 2976/* Free up register info memory. */ 2977extern void free_reg_info (void); 2978extern void init_subregs_of_mode (void); 2979extern void finish_subregs_of_mode (void); 2980 2981/* recog.c */ 2982extern rtx extract_asm_operands (rtx); 2983extern int asm_noperands (const_rtx); 2984extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 2985 machine_mode *, location_t *); 2986extern void get_referenced_operands (const char *, bool *, unsigned int); 2987 2988extern enum reg_class reg_preferred_class (int); 2989extern enum reg_class reg_alternate_class (int); 2990extern enum reg_class reg_allocno_class (int); 2991extern void setup_reg_classes (int, enum reg_class, enum reg_class, 2992 enum reg_class); 2993 2994extern void split_all_insns (void); 2995extern unsigned int split_all_insns_noflow (void); 2996 2997#define MAX_SAVED_CONST_INT 64 2998extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 2999 3000#define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 3001#define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 3002#define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 3003#define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 3004extern GTY(()) rtx const_true_rtx; 3005 3006extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE]; 3007 3008/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 3009 same as VOIDmode. */ 3010 3011#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 3012 3013/* Likewise, for the constants 1 and 2 and -1. */ 3014 3015#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 3016#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 3017#define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)]) 3018 3019extern GTY(()) rtx pc_rtx; 3020extern GTY(()) rtx cc0_rtx; 3021extern GTY(()) rtx ret_rtx; 3022extern GTY(()) rtx simple_return_rtx; 3023 3024/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 3025 is used to represent the frame pointer. This is because the 3026 hard frame pointer and the automatic variables are separated by an amount 3027 that cannot be determined until after register allocation. We can assume 3028 that in this case ELIMINABLE_REGS will be defined, one action of which 3029 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 3030#ifndef HARD_FRAME_POINTER_REGNUM 3031#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 3032#endif 3033 3034#ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER 3035#define HARD_FRAME_POINTER_IS_FRAME_POINTER \ 3036 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM) 3037#endif 3038 3039#ifndef HARD_FRAME_POINTER_IS_ARG_POINTER 3040#define HARD_FRAME_POINTER_IS_ARG_POINTER \ 3041 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM) 3042#endif 3043 3044/* Index labels for global_rtl. */ 3045enum global_rtl_index 3046{ 3047 GR_STACK_POINTER, 3048 GR_FRAME_POINTER, 3049/* For register elimination to work properly these hard_frame_pointer_rtx, 3050 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 3051 the same register. */ 3052#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 3053 GR_ARG_POINTER = GR_FRAME_POINTER, 3054#endif 3055#if HARD_FRAME_POINTER_IS_FRAME_POINTER 3056 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 3057#else 3058 GR_HARD_FRAME_POINTER, 3059#endif 3060#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 3061#if HARD_FRAME_POINTER_IS_ARG_POINTER 3062 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 3063#else 3064 GR_ARG_POINTER, 3065#endif 3066#endif 3067 GR_VIRTUAL_INCOMING_ARGS, 3068 GR_VIRTUAL_STACK_ARGS, 3069 GR_VIRTUAL_STACK_DYNAMIC, 3070 GR_VIRTUAL_OUTGOING_ARGS, 3071 GR_VIRTUAL_CFA, 3072 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY, 3073 3074 GR_MAX 3075}; 3076 3077/* Target-dependent globals. */ 3078struct GTY(()) target_rtl { 3079 /* All references to the hard registers in global_rtl_index go through 3080 these unique rtl objects. On machines where the frame-pointer and 3081 arg-pointer are the same register, they use the same unique object. 3082 3083 After register allocation, other rtl objects which used to be pseudo-regs 3084 may be clobbered to refer to the frame-pointer register. 3085 But references that were originally to the frame-pointer can be 3086 distinguished from the others because they contain frame_pointer_rtx. 3087 3088 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little 3089 tricky: until register elimination has taken place hard_frame_pointer_rtx 3090 should be used if it is being set, and frame_pointer_rtx otherwise. After 3091 register elimination hard_frame_pointer_rtx should always be used. 3092 On machines where the two registers are same (most) then these are the 3093 same. */ 3094 rtx x_global_rtl[GR_MAX]; 3095 3096 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */ 3097 rtx x_pic_offset_table_rtx; 3098 3099 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM). 3100 This is used to implement __builtin_return_address for some machines; 3101 see for instance the MIPS port. */ 3102 rtx x_return_address_pointer_rtx; 3103 3104 /* Commonly used RTL for hard registers. These objects are not 3105 necessarily unique, so we allocate them separately from global_rtl. 3106 They are initialized once per compilation unit, then copied into 3107 regno_reg_rtx at the beginning of each function. */ 3108 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER]; 3109 3110 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */ 3111 rtx x_top_of_stack[MAX_MACHINE_MODE]; 3112 3113 /* Static hunks of RTL used by the aliasing code; these are treated 3114 as persistent to avoid unnecessary RTL allocations. */ 3115 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER]; 3116 3117 /* The default memory attributes for each mode. */ 3118 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE]; 3119 3120 /* Track if RTL has been initialized. */ 3121 bool target_specific_initialized; 3122}; 3123 3124extern GTY(()) struct target_rtl default_target_rtl; 3125#if SWITCHABLE_TARGET 3126extern struct target_rtl *this_target_rtl; 3127#else 3128#define this_target_rtl (&default_target_rtl) 3129#endif 3130 3131#define global_rtl \ 3132 (this_target_rtl->x_global_rtl) 3133#define pic_offset_table_rtx \ 3134 (this_target_rtl->x_pic_offset_table_rtx) 3135#define return_address_pointer_rtx \ 3136 (this_target_rtl->x_return_address_pointer_rtx) 3137#define top_of_stack \ 3138 (this_target_rtl->x_top_of_stack) 3139#define mode_mem_attrs \ 3140 (this_target_rtl->x_mode_mem_attrs) 3141 3142/* All references to certain hard regs, except those created 3143 by allocating pseudo regs into them (when that's possible), 3144 go through these unique rtx objects. */ 3145#define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 3146#define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 3147#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 3148#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 3149 3150#ifndef GENERATOR_FILE 3151/* Return the attributes of a MEM rtx. */ 3152static inline struct mem_attrs * 3153get_mem_attrs (const_rtx x) 3154{ 3155 struct mem_attrs *attrs; 3156 3157 attrs = MEM_ATTRS (x); 3158 if (!attrs) 3159 attrs = mode_mem_attrs[(int) GET_MODE (x)]; 3160 return attrs; 3161} 3162#endif 3163 3164/* Include the RTL generation functions. */ 3165 3166#ifndef GENERATOR_FILE 3167#include "genrtl.h" 3168#undef gen_rtx_ASM_INPUT 3169#define gen_rtx_ASM_INPUT(MODE, ARG0) \ 3170 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0) 3171#define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \ 3172 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC)) 3173#endif 3174 3175/* There are some RTL codes that require special attention; the 3176 generation functions included above do the raw handling. If you 3177 add to this list, modify special_rtx in gengenrtl.c as well. */ 3178 3179extern rtx_expr_list *gen_rtx_EXPR_LIST (machine_mode, rtx, rtx); 3180extern rtx_insn_list *gen_rtx_INSN_LIST (machine_mode, rtx, rtx); 3181extern rtx_insn * 3182gen_rtx_INSN (machine_mode mode, rtx_insn *prev_insn, rtx_insn *next_insn, 3183 basic_block bb, rtx pattern, int location, int code, 3184 rtx reg_notes); 3185extern rtx gen_rtx_CONST_INT (machine_mode, HOST_WIDE_INT); 3186extern rtx gen_rtx_CONST_VECTOR (machine_mode, rtvec); 3187extern rtx gen_raw_REG (machine_mode, int); 3188extern rtx gen_rtx_REG (machine_mode, unsigned); 3189extern rtx gen_rtx_SUBREG (machine_mode, rtx, int); 3190extern rtx gen_rtx_MEM (machine_mode, rtx); 3191extern rtx gen_rtx_VAR_LOCATION (machine_mode, tree, rtx, 3192 enum var_init_status); 3193 3194#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 3195 3196/* Virtual registers are used during RTL generation to refer to locations into 3197 the stack frame when the actual location isn't known until RTL generation 3198 is complete. The routine instantiate_virtual_regs replaces these with 3199 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 3200 a constant. */ 3201 3202#define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 3203 3204/* This points to the first word of the incoming arguments passed on the stack, 3205 either by the caller or by the callee when pretending it was passed by the 3206 caller. */ 3207 3208#define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 3209 3210#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 3211 3212/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 3213 variable on the stack. Otherwise, it points to the first variable on 3214 the stack. */ 3215 3216#define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 3217 3218#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 3219 3220/* This points to the location of dynamically-allocated memory on the stack 3221 immediately after the stack pointer has been adjusted by the amount 3222 desired. */ 3223 3224#define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 3225 3226#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 3227 3228/* This points to the location in the stack at which outgoing arguments should 3229 be written when the stack is pre-pushed (arguments pushed using push 3230 insns always use sp). */ 3231 3232#define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 3233 3234#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 3235 3236/* This points to the Canonical Frame Address of the function. This 3237 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 3238 but is calculated relative to the arg pointer for simplicity; the 3239 frame pointer nor stack pointer are necessarily fixed relative to 3240 the CFA until after reload. */ 3241 3242#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 3243 3244#define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 3245 3246#define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 3247 3248/* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT 3249 when finalized. */ 3250 3251#define virtual_preferred_stack_boundary_rtx \ 3252 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY]) 3253 3254#define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \ 3255 ((FIRST_VIRTUAL_REGISTER) + 5) 3256 3257#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5) 3258 3259/* Nonzero if REGNUM is a pointer into the stack frame. */ 3260#define REGNO_PTR_FRAME_P(REGNUM) \ 3261 ((REGNUM) == STACK_POINTER_REGNUM \ 3262 || (REGNUM) == FRAME_POINTER_REGNUM \ 3263 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 3264 || (REGNUM) == ARG_POINTER_REGNUM \ 3265 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 3266 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER)) 3267 3268/* REGNUM never really appearing in the INSN stream. */ 3269#define INVALID_REGNUM (~(unsigned int) 0) 3270 3271/* REGNUM for which no debug information can be generated. */ 3272#define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1) 3273 3274extern rtx output_constant_def (tree, int); 3275extern rtx lookup_constant_def (tree); 3276 3277/* Nonzero after end of reload pass. 3278 Set to 1 or 0 by reload1.c. */ 3279 3280extern int reload_completed; 3281 3282/* Nonzero after thread_prologue_and_epilogue_insns has run. */ 3283extern int epilogue_completed; 3284 3285/* Set to 1 while reload_as_needed is operating. 3286 Required by some machines to handle any generated moves differently. */ 3287 3288extern int reload_in_progress; 3289 3290/* Set to 1 while in lra. */ 3291extern int lra_in_progress; 3292 3293/* This macro indicates whether you may create a new 3294 pseudo-register. */ 3295 3296#define can_create_pseudo_p() (!reload_in_progress && !reload_completed) 3297 3298#ifdef STACK_REGS 3299/* Nonzero after end of regstack pass. 3300 Set to 1 or 0 by reg-stack.c. */ 3301extern int regstack_completed; 3302#endif 3303 3304/* If this is nonzero, we do not bother generating VOLATILE 3305 around volatile memory references, and we are willing to 3306 output indirect addresses. If cse is to follow, we reject 3307 indirect addresses so a useful potential cse is generated; 3308 if it is used only once, instruction combination will produce 3309 the same indirect address eventually. */ 3310extern int cse_not_expected; 3311 3312/* Translates rtx code to tree code, for those codes needed by 3313 REAL_ARITHMETIC. The function returns an int because the caller may not 3314 know what `enum tree_code' means. */ 3315 3316extern int rtx_to_tree_code (enum rtx_code); 3317 3318/* In cse.c */ 3319extern int delete_trivially_dead_insns (rtx_insn *, int); 3320extern int exp_equiv_p (const_rtx, const_rtx, int, bool); 3321extern unsigned hash_rtx (const_rtx x, machine_mode, int *, int *, bool); 3322 3323/* In dse.c */ 3324extern bool check_for_inc_dec (rtx_insn *insn); 3325 3326/* In jump.c */ 3327extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 3328extern bool jump_to_label_p (const rtx_insn *); 3329extern int condjump_p (const rtx_insn *); 3330extern int any_condjump_p (const rtx_insn *); 3331extern int any_uncondjump_p (const rtx_insn *); 3332extern rtx pc_set (const rtx_insn *); 3333extern rtx condjump_label (const rtx_insn *); 3334extern int simplejump_p (const rtx_insn *); 3335extern int returnjump_p (const rtx_insn *); 3336extern int eh_returnjump_p (rtx_insn *); 3337extern int onlyjump_p (const rtx_insn *); 3338extern int only_sets_cc0_p (const_rtx); 3339extern int sets_cc0_p (const_rtx); 3340extern int invert_jump_1 (rtx_insn *, rtx); 3341extern int invert_jump (rtx_insn *, rtx, int); 3342extern int rtx_renumbered_equal_p (const_rtx, const_rtx); 3343extern int true_regnum (const_rtx); 3344extern unsigned int reg_or_subregno (const_rtx); 3345extern int redirect_jump_1 (rtx, rtx); 3346extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 3347extern int redirect_jump (rtx, rtx, int); 3348extern void rebuild_jump_labels (rtx_insn *); 3349extern void rebuild_jump_labels_chain (rtx_insn *); 3350extern rtx reversed_comparison (const_rtx, machine_mode); 3351extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx); 3352extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx, 3353 const_rtx, const_rtx); 3354extern void delete_for_peephole (rtx_insn *, rtx_insn *); 3355extern int condjump_in_parallel_p (const rtx_insn *); 3356 3357/* In emit-rtl.c. */ 3358extern int max_reg_num (void); 3359extern int max_label_num (void); 3360extern int get_first_label_num (void); 3361extern void maybe_set_first_label_num (rtx); 3362extern void delete_insns_since (rtx_insn *); 3363extern void mark_reg_pointer (rtx, int); 3364extern void mark_user_reg (rtx); 3365extern void reset_used_flags (rtx); 3366extern void set_used_flags (rtx); 3367extern void reorder_insns (rtx_insn *, rtx_insn *, rtx_insn *); 3368extern void reorder_insns_nobb (rtx_insn *, rtx_insn *, rtx_insn *); 3369extern int get_max_insn_count (void); 3370extern int in_sequence_p (void); 3371extern void init_emit (void); 3372extern void init_emit_regs (void); 3373extern void init_derived_machine_modes (void); 3374extern void init_emit_once (void); 3375extern void push_topmost_sequence (void); 3376extern void pop_topmost_sequence (void); 3377extern void set_new_first_and_last_insn (rtx_insn *, rtx_insn *); 3378extern unsigned int unshare_all_rtl (void); 3379extern void unshare_all_rtl_again (rtx_insn *); 3380extern void unshare_all_rtl_in_chain (rtx_insn *); 3381extern void verify_rtl_sharing (void); 3382extern void add_insn (rtx_insn *); 3383extern void add_insn_before (rtx, rtx, basic_block); 3384extern void add_insn_after (rtx, rtx, basic_block); 3385extern void remove_insn (rtx); 3386extern rtx_insn *emit (rtx); 3387extern void emit_insn_at_entry (rtx); 3388extern rtx gen_lowpart_SUBREG (machine_mode, rtx); 3389extern rtx gen_const_mem (machine_mode, rtx); 3390extern rtx gen_frame_mem (machine_mode, rtx); 3391extern rtx gen_tmp_stack_mem (machine_mode, rtx); 3392extern bool validate_subreg (machine_mode, machine_mode, 3393 const_rtx, unsigned int); 3394 3395/* In combine.c */ 3396extern unsigned int extended_count (const_rtx, machine_mode, int); 3397extern rtx remove_death (unsigned int, rtx_insn *); 3398extern void dump_combine_stats (FILE *); 3399extern void dump_combine_total_stats (FILE *); 3400extern rtx make_compound_operation (rtx, enum rtx_code); 3401 3402/* In sched-rgn.c. */ 3403extern void schedule_insns (void); 3404 3405/* In sched-ebb.c. */ 3406extern void schedule_ebbs (void); 3407 3408/* In sel-sched-dump.c. */ 3409extern void sel_sched_fix_param (const char *param, const char *val); 3410 3411/* In print-rtl.c */ 3412extern const char *print_rtx_head; 3413extern void debug (const rtx_def &ref); 3414extern void debug (const rtx_def *ptr); 3415extern void debug_rtx (const_rtx); 3416extern void debug_rtx_list (const rtx_insn *, int); 3417extern void debug_rtx_range (const rtx_insn *, const rtx_insn *); 3418extern const_rtx debug_rtx_find (const rtx_insn *, int); 3419extern void print_mem_expr (FILE *, const_tree); 3420extern void print_rtl (FILE *, const_rtx); 3421extern void print_simple_rtl (FILE *, const_rtx); 3422extern int print_rtl_single (FILE *, const_rtx); 3423extern int print_rtl_single_with_indent (FILE *, const_rtx, int); 3424extern void print_inline_rtx (FILE *, const_rtx, int); 3425 3426/* Functions in sched-vis.c. FIXME: Ideally these functions would 3427 not be in sched-vis.c but in rtl.c, because they are not only used 3428 by the scheduler anymore but for all "slim" RTL dumping. */ 3429extern void dump_value_slim (FILE *, const_rtx, int); 3430extern void dump_insn_slim (FILE *, const_rtx); 3431extern void dump_rtl_slim (FILE *, const rtx_insn *, const rtx_insn *, 3432 int, int); 3433extern void print_value (pretty_printer *, const_rtx, int); 3434extern void print_pattern (pretty_printer *, const_rtx, int); 3435extern void print_insn (pretty_printer *, const_rtx, int); 3436extern void rtl_dump_bb_for_graph (pretty_printer *, basic_block); 3437extern const char *str_pattern_slim (const_rtx); 3438 3439/* In stmt.c */ 3440extern void expand_null_return (void); 3441extern void expand_naked_return (void); 3442extern void emit_jump (rtx); 3443 3444/* In expr.c */ 3445extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 3446 unsigned int, int); 3447extern HOST_WIDE_INT find_args_size_adjust (rtx_insn *); 3448extern int fixup_args_size_notes (rtx_insn *, rtx_insn *, int); 3449 3450/* In expmed.c */ 3451extern void init_expmed (void); 3452extern void expand_inc (rtx, rtx); 3453extern void expand_dec (rtx, rtx); 3454 3455/* In lower-subreg.c */ 3456extern void init_lower_subreg (void); 3457 3458/* In gcse.c */ 3459extern bool can_copy_p (machine_mode); 3460extern bool can_assign_to_reg_without_clobbers_p (rtx); 3461extern rtx fis_get_condition (rtx_insn *); 3462 3463/* In ira.c */ 3464#ifdef HARD_CONST 3465extern HARD_REG_SET eliminable_regset; 3466#endif 3467extern void mark_elimination (int, int); 3468 3469/* In reginfo.c */ 3470extern int reg_classes_intersect_p (reg_class_t, reg_class_t); 3471extern int reg_class_subset_p (reg_class_t, reg_class_t); 3472extern void globalize_reg (tree, int); 3473extern void init_reg_modes_target (void); 3474extern void init_regs (void); 3475extern void reinit_regs (void); 3476extern void init_fake_stack_mems (void); 3477extern void save_register_info (void); 3478extern void init_reg_sets (void); 3479extern void regclass (rtx, int); 3480extern void reg_scan (rtx_insn *, unsigned int); 3481extern void fix_register (const char *, int, int); 3482#ifdef HARD_CONST 3483extern const HARD_REG_SET *valid_mode_changes_for_regno (unsigned int); 3484#endif 3485 3486/* In reload1.c */ 3487extern int function_invariant_p (const_rtx); 3488 3489/* In calls.c */ 3490enum libcall_type 3491{ 3492 LCT_NORMAL = 0, 3493 LCT_CONST = 1, 3494 LCT_PURE = 2, 3495 LCT_NORETURN = 3, 3496 LCT_THROW = 4, 3497 LCT_RETURNS_TWICE = 5 3498}; 3499 3500extern void emit_library_call (rtx, enum libcall_type, machine_mode, int, 3501 ...); 3502extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 3503 machine_mode, int, ...); 3504 3505/* In varasm.c */ 3506extern void init_varasm_once (void); 3507 3508extern rtx make_debug_expr_from_rtl (const_rtx); 3509 3510/* In read-rtl.c */ 3511extern bool read_rtx (const char *, rtx *); 3512 3513/* In alias.c */ 3514extern rtx canon_rtx (rtx); 3515extern int true_dependence (const_rtx, machine_mode, const_rtx); 3516extern rtx get_addr (rtx); 3517extern int canon_true_dependence (const_rtx, machine_mode, rtx, 3518 const_rtx, rtx); 3519extern int read_dependence (const_rtx, const_rtx); 3520extern int anti_dependence (const_rtx, const_rtx); 3521extern int canon_anti_dependence (const_rtx, bool, 3522 const_rtx, machine_mode, rtx); 3523extern int output_dependence (const_rtx, const_rtx); 3524extern int canon_output_dependence (const_rtx, bool, 3525 const_rtx, machine_mode, rtx); 3526extern int may_alias_p (const_rtx, const_rtx); 3527extern void init_alias_target (void); 3528extern void init_alias_analysis (void); 3529extern void end_alias_analysis (void); 3530extern void vt_equate_reg_base_value (const_rtx, const_rtx); 3531extern bool memory_modified_in_insn_p (const_rtx, const_rtx); 3532extern bool memory_must_be_modified_in_insn_p (const_rtx, const_rtx); 3533extern bool may_be_sp_based_p (rtx); 3534extern rtx gen_hard_reg_clobber (machine_mode, unsigned int); 3535extern rtx get_reg_known_value (unsigned int); 3536extern bool get_reg_known_equiv_p (unsigned int); 3537extern rtx get_reg_base_value (unsigned int); 3538 3539#ifdef STACK_REGS 3540extern int stack_regs_mentioned (const_rtx insn); 3541#endif 3542 3543/* In toplev.c */ 3544extern GTY(()) rtx stack_limit_rtx; 3545 3546/* In var-tracking.c */ 3547extern unsigned int variable_tracking_main (void); 3548 3549/* In stor-layout.c. */ 3550extern void get_mode_bounds (machine_mode, int, machine_mode, 3551 rtx *, rtx *); 3552 3553/* In loop-iv.c */ 3554extern rtx canon_condition (rtx); 3555extern void simplify_using_condition (rtx, rtx *, bitmap); 3556 3557/* In final.c */ 3558extern unsigned int compute_alignments (void); 3559extern void update_alignments (vec<rtx> &); 3560extern int asm_str_count (const char *templ); 3561 3562struct rtl_hooks 3563{ 3564 rtx (*gen_lowpart) (machine_mode, rtx); 3565 rtx (*gen_lowpart_no_emit) (machine_mode, rtx); 3566 rtx (*reg_nonzero_bits) (const_rtx, machine_mode, const_rtx, machine_mode, 3567 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 3568 rtx (*reg_num_sign_bit_copies) (const_rtx, machine_mode, const_rtx, machine_mode, 3569 unsigned int, unsigned int *); 3570 bool (*reg_truncated_to_mode) (machine_mode, const_rtx); 3571 3572 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 3573}; 3574 3575/* Each pass can provide its own. */ 3576extern struct rtl_hooks rtl_hooks; 3577 3578/* ... but then it has to restore these. */ 3579extern const struct rtl_hooks general_rtl_hooks; 3580 3581/* Keep this for the nonce. */ 3582#define gen_lowpart rtl_hooks.gen_lowpart 3583 3584extern void insn_locations_init (void); 3585extern void insn_locations_finalize (void); 3586extern void set_curr_insn_location (location_t); 3587extern location_t curr_insn_location (void); 3588 3589/* rtl-error.c */ 3590extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *) 3591 ATTRIBUTE_NORETURN; 3592extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *) 3593 ATTRIBUTE_NORETURN; 3594 3595#define fatal_insn(msgid, insn) \ 3596 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__) 3597#define fatal_insn_not_found(insn) \ 3598 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__) 3599 3600/* reginfo.c */ 3601extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER]; 3602 3603 3604#endif /* ! GCC_RTL_H */ 3605