gcc/config/aarch64/aarch64-protos.h

   1 /* Machine description for AArch64 architecture.
   2    Copyright (C) 2009-2019 Free Software Foundation, Inc.
   3    Contributed by ARM Ltd.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #ifndef GCC_AARCH64_PROTOS_H
  23 #define GCC_AARCH64_PROTOS_H
  24
  25 #include "input.h"
  26
  27 /* SYMBOL_SMALL_ABSOLUTE: Generate symbol accesses through
  28    high and lo relocs that calculate the base address using a PC
  29    relative reloc.
  30    So to get the address of foo, we generate
  31    adrp x0, foo
  32    add  x0, x0, :lo12:foo
  33
  34    To load or store something to foo, we could use the corresponding
  35    load store variants that generate an
  36    ldr x0, [x0,:lo12:foo]
  37    or
  38    str x1, [x0, :lo12:foo]
  39
  40    This corresponds to the small code model of the compiler.
  41
  42    SYMBOL_SMALL_GOT_4G: Similar to the one above but this
  43    gives us the GOT entry of the symbol being referred to :
  44    Thus calculating the GOT entry for foo is done using the
  45    following sequence of instructions.  The ADRP instruction
  46    gets us to the page containing the GOT entry of the symbol
  47    and the got_lo12 gets us the actual offset in it, together
  48    the base and offset, we can address 4G size GOT table.
  49
  50    adrp  x0, :got:foo
  51    ldr   x0, [x0, :gotoff_lo12:foo]
  52
  53    This corresponds to the small PIC model of the compiler.
  54
  55    SYMBOL_SMALL_GOT_28K: Similar to SYMBOL_SMALL_GOT_4G, but used for symbol
  56    restricted within 28K GOT table size.
  57
  58    ldr reg, [gp, #:gotpage_lo15:sym]
  59
  60    This corresponds to -fpic model for small memory model of the compiler.
  61
  62    SYMBOL_SMALL_TLSGD
  63    SYMBOL_SMALL_TLSDESC
  64    SYMBOL_SMALL_TLSIE
  65    SYMBOL_TINY_TLSIE
  66    SYMBOL_TLSLE12
  67    SYMBOL_TLSLE24
  68    SYMBOL_TLSLE32
  69    SYMBOL_TLSLE48
  70    Each of these represents a thread-local symbol, and corresponds to the
  71    thread local storage relocation operator for the symbol being referred to.
  72
  73    SYMBOL_TINY_ABSOLUTE
  74
  75    Generate symbol accesses as a PC relative address using a single
  76    instruction.  To compute the address of symbol foo, we generate:
  77
  78    ADR x0, foo
  79
  80    SYMBOL_TINY_GOT
  81
  82    Generate symbol accesses via the GOT using a single PC relative
  83    instruction.  To compute the address of symbol foo, we generate:
  84
  85    ldr t0, :got:foo
  86
  87    The value of foo can subsequently read using:
  88
  89    ldrb    t0, [t0]
  90
  91    SYMBOL_FORCE_TO_MEM : Global variables are addressed using
  92    constant pool.  All variable addresses are spilled into constant
  93    pools.  The constant pools themselves are addressed using PC
  94    relative accesses.  This only works for the large code model.
  95  */
  96 enum aarch64_symbol_type
  97 {
  98   SYMBOL_SMALL_ABSOLUTE,
  99   SYMBOL_SMALL_GOT_28K,
 100   SYMBOL_SMALL_GOT_4G,
 101   SYMBOL_SMALL_TLSGD,
 102   SYMBOL_SMALL_TLSDESC,
 103   SYMBOL_SMALL_TLSIE,
 104   SYMBOL_TINY_ABSOLUTE,
 105   SYMBOL_TINY_GOT,
 106   SYMBOL_TINY_TLSIE,
 107   SYMBOL_TLSLE12,
 108   SYMBOL_TLSLE24,
 109   SYMBOL_TLSLE32,
 110   SYMBOL_TLSLE48,
 111   SYMBOL_FORCE_TO_MEM
 112 };
 113
 114 /* Classifies the type of an address query.
 115
 116    ADDR_QUERY_M
 117       Query what is valid for an "m" constraint and a memory_operand
 118       (the rules are the same for both).
 119
 120    ADDR_QUERY_LDP_STP
 121       Query what is valid for a load/store pair.
 122
 123    ADDR_QUERY_LDP_STP_N
 124       Query what is valid for a load/store pair, but narrow the incoming mode
 125       for address checking.  This is used for the store_pair_lanes patterns.
 126
 127    ADDR_QUERY_ANY
 128       Query what is valid for at least one memory constraint, which may
 129       allow things that "m" doesn't.  For example, the SVE LDR and STR
 130       addressing modes allow a wider range of immediate offsets than "m"
 131       does.  */
 132 enum aarch64_addr_query_type {
 133   ADDR_QUERY_M,
 134   ADDR_QUERY_LDP_STP,
 135   ADDR_QUERY_LDP_STP_N,
 136   ADDR_QUERY_ANY
 137 };
 138
 139 /* A set of tuning parameters contains references to size and time
 140    cost models and vectors for address cost calculations, register
 141    move costs and memory move costs.  */
 142
 143 /* Scaled addressing modes can vary cost depending on the mode of the
 144    value to be loaded/stored.  QImode values cannot use scaled
 145    addressing modes.  */
 146
 147 struct scale_addr_mode_cost
 148 {
 149   const int hi;
 150   const int si;
 151   const int di;
 152   const int ti;
 153 };
 154
 155 /* Additional cost for addresses.  */
 156 struct cpu_addrcost_table
 157 {
 158   const struct scale_addr_mode_cost addr_scale_costs;
 159   const int pre_modify;
 160   const int post_modify;
 161   const int register_offset;
 162   const int register_sextend;
 163   const int register_zextend;
 164   const int imm_offset;
 165 };
 166
 167 /* Additional costs for register copies.  Cost is for one register.  */
 168 struct cpu_regmove_cost
 169 {
 170   const int GP2GP;
 171   const int GP2FP;
 172   const int FP2GP;
 173   const int FP2FP;
 174 };
 175
 176 /* Cost for vector insn classes.  */
 177 struct cpu_vector_cost
 178 {
 179   const int scalar_int_stmt_cost;        /* Cost of any int scalar operation,
 180                                             excluding load and store.  */
 181   const int scalar_fp_stmt_cost;         /* Cost of any fp scalar operation,
 182                                             excluding load and store.  */
 183   const int scalar_load_cost;            /* Cost of scalar load.  */
 184   const int scalar_store_cost;           /* Cost of scalar store.  */
 185   const int vec_int_stmt_cost;           /* Cost of any int vector operation,
 186                                             excluding load, store, permute,
 187                                             vector-to-scalar and
 188                                             scalar-to-vector operation.  */
 189   const int vec_fp_stmt_cost;            /* Cost of any fp vector operation,
 190                                             excluding load, store, permute,
 191                                             vector-to-scalar and
 192                                             scalar-to-vector operation.  */
 193   const int vec_permute_cost;            /* Cost of permute operation.  */
 194   const int vec_to_scalar_cost;          /* Cost of vec-to-scalar operation.  */
 195   const int scalar_to_vec_cost;          /* Cost of scalar-to-vector
 196                                             operation.  */
 197   const int vec_align_load_cost;         /* Cost of aligned vector load.  */
 198   const int vec_unalign_load_cost;       /* Cost of unaligned vector load.  */
 199   const int vec_unalign_store_cost;      /* Cost of unaligned vector store.  */
 200   const int vec_store_cost;              /* Cost of vector store.  */
 201   const int cond_taken_branch_cost;      /* Cost of taken branch.  */
 202   const int cond_not_taken_branch_cost;  /* Cost of not taken branch.  */
 203 };
 204
 205 /* Branch costs.  */
 206 struct cpu_branch_cost
 207 {
 208   const int predictable;    /* Predictable branch or optimizing for size.  */
 209   const int unpredictable;  /* Unpredictable branch or optimizing for speed.  */
 210 };
 211
 212 /* Control approximate alternatives to certain FP operators.  */
 213 #define AARCH64_APPROX_MODE(MODE) \
 214   ((MIN_MODE_FLOAT <= (MODE) && (MODE) <= MAX_MODE_FLOAT) \
 215    ? (1 << ((MODE) - MIN_MODE_FLOAT)) \
 216    : (MIN_MODE_VECTOR_FLOAT <= (MODE) && (MODE) <= MAX_MODE_VECTOR_FLOAT) \
 217      ? (1 << ((MODE) - MIN_MODE_VECTOR_FLOAT \
 218               + MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1)) \
 219      : (0))
 220 #define AARCH64_APPROX_NONE (0)
 221 #define AARCH64_APPROX_ALL (-1)
 222
 223 /* Allowed modes for approximations.  */
 224 struct cpu_approx_modes
 225 {
 226   const unsigned int division;          /* Division.  */
 227   const unsigned int sqrt;              /* Square root.  */
 228   const unsigned int recip_sqrt;        /* Reciprocal square root.  */
 229 };
 230
 231 /* Cache prefetch settings for prefetch-loop-arrays.  */
 232 struct cpu_prefetch_tune
 233 {
 234   const int num_slots;
 235   const int l1_cache_size;
 236   const int l1_cache_line_size;
 237   const int l2_cache_size;
 238   /* Whether software prefetch hints should be issued for non-constant
 239      strides.  */
 240   const bool prefetch_dynamic_strides;
 241   /* The minimum constant stride beyond which we should use prefetch
 242      hints for.  */
 243   const int minimum_stride;
 244   const int default_opt_level;
 245 };
 246
 247 struct tune_params
 248 {
 249   const struct cpu_cost_table *insn_extra_cost;
 250   const struct cpu_addrcost_table *addr_cost;
 251   const struct cpu_regmove_cost *regmove_cost;
 252   const struct cpu_vector_cost *vec_costs;
 253   const struct cpu_branch_cost *branch_costs;
 254   const struct cpu_approx_modes *approx_modes;
 255   /* Width of the SVE registers or SVE_NOT_IMPLEMENTED if not applicable.
 256      Only used for tuning decisions, does not disable VLA
 257      vectorization.  */
 258   enum aarch64_sve_vector_bits_enum sve_width;
 259   int memmov_cost;
 260   int issue_rate;
 261   unsigned int fusible_ops;
 262   const char *function_align;
 263   const char *jump_align;
 264   const char *loop_align;
 265   int int_reassoc_width;
 266   int fp_reassoc_width;
 267   int vec_reassoc_width;
 268   int min_div_recip_mul_sf;
 269   int min_div_recip_mul_df;
 270   /* Value for aarch64_case_values_threshold; or 0 for the default.  */
 271   unsigned int max_case_values;
 272 /* An enum specifying how to take into account CPU autoprefetch capabilities
 273    during instruction scheduling:
 274    - AUTOPREFETCHER_OFF: Do not take autoprefetch capabilities into account.
 275    - AUTOPREFETCHER_WEAK: Attempt to sort sequences of loads/store in order of
 276    offsets but allow the pipeline hazard recognizer to alter that order to
 277    maximize multi-issue opportunities.
 278    - AUTOPREFETCHER_STRONG: Attempt to sort sequences of loads/store in order of
 279    offsets and prefer this even if it restricts multi-issue opportunities.  */
 280
 281   enum aarch64_autoprefetch_model
 282   {
 283     AUTOPREFETCHER_OFF,
 284     AUTOPREFETCHER_WEAK,
 285     AUTOPREFETCHER_STRONG
 286   } autoprefetcher_model;
 287
 288   unsigned int extra_tuning_flags;
 289
 290   /* Place prefetch struct pointer at the end to enable type checking
 291      errors when tune_params misses elements (e.g., from erroneous merges).  */
 292   const struct cpu_prefetch_tune *prefetch;
 293 };
 294
 295 /* Classifies an address.
 296
 297    ADDRESS_REG_IMM
 298        A simple base register plus immediate offset.
 299
 300    ADDRESS_REG_WB
 301        A base register indexed by immediate offset with writeback.
 302
 303    ADDRESS_REG_REG
 304        A base register indexed by (optionally scaled) register.
 305
 306    ADDRESS_REG_UXTW
 307        A base register indexed by (optionally scaled) zero-extended register.
 308
 309    ADDRESS_REG_SXTW
 310        A base register indexed by (optionally scaled) sign-extended register.
 311
 312    ADDRESS_LO_SUM
 313        A LO_SUM rtx with a base register and "LO12" symbol relocation.
 314
 315    ADDRESS_SYMBOLIC:
 316        A constant symbolic address, in pc-relative literal pool.  */
 317
 318 enum aarch64_address_type {
 319   ADDRESS_REG_IMM,
 320   ADDRESS_REG_WB,
 321   ADDRESS_REG_REG,
 322   ADDRESS_REG_UXTW,
 323   ADDRESS_REG_SXTW,
 324   ADDRESS_LO_SUM,
 325   ADDRESS_SYMBOLIC
 326 };
 327
 328 /* Address information.  */
 329 struct aarch64_address_info {
 330   enum aarch64_address_type type;
 331   rtx base;
 332   rtx offset;
 333   poly_int64 const_offset;
 334   int shift;
 335   enum aarch64_symbol_type symbol_type;
 336 };
 337
 338 #define AARCH64_FUSION_PAIR(x, name) \
 339   AARCH64_FUSE_##name##_index,
 340 /* Supported fusion operations.  */
 341 enum aarch64_fusion_pairs_index
 342 {
 343 #include "aarch64-fusion-pairs.def"
 344   AARCH64_FUSE_index_END
 345 };
 346
 347 #define AARCH64_FUSION_PAIR(x, name) \
 348   AARCH64_FUSE_##name = (1u << AARCH64_FUSE_##name##_index),
 349 /* Supported fusion operations.  */
 350 enum aarch64_fusion_pairs
 351 {
 352   AARCH64_FUSE_NOTHING = 0,
 353 #include "aarch64-fusion-pairs.def"
 354   AARCH64_FUSE_ALL = (1u << AARCH64_FUSE_index_END) - 1
 355 };
 356
 357 #define AARCH64_EXTRA_TUNING_OPTION(x, name) \
 358   AARCH64_EXTRA_TUNE_##name##_index,
 359 /* Supported tuning flags indexes.  */
 360 enum aarch64_extra_tuning_flags_index
 361 {
 362 #include "aarch64-tuning-flags.def"
 363   AARCH64_EXTRA_TUNE_index_END
 364 };
 365
 366
 367 #define AARCH64_EXTRA_TUNING_OPTION(x, name) \
 368   AARCH64_EXTRA_TUNE_##name = (1u << AARCH64_EXTRA_TUNE_##name##_index),
 369 /* Supported tuning flags.  */
 370 enum aarch64_extra_tuning_flags
 371 {
 372   AARCH64_EXTRA_TUNE_NONE = 0,
 373 #include "aarch64-tuning-flags.def"
 374   AARCH64_EXTRA_TUNE_ALL = (1u << AARCH64_EXTRA_TUNE_index_END) - 1
 375 };
 376
 377 /* Enum describing the various ways that the
 378    aarch64_parse_{arch,tune,cpu,extension} functions can fail.
 379    This way their callers can choose what kind of error to give.  */
 380
 381 enum aarch64_parse_opt_result
 382 {
 383   AARCH64_PARSE_OK,                     /* Parsing was successful.  */
 384   AARCH64_PARSE_MISSING_ARG,            /* Missing argument.  */
 385   AARCH64_PARSE_INVALID_FEATURE,        /* Invalid feature modifier.  */
 386   AARCH64_PARSE_INVALID_ARG             /* Invalid arch, tune, cpu arg.  */
 387 };
 388
 389 /* Enum to distinguish which type of check is to be done in
 390    aarch64_simd_valid_immediate.  This is used as a bitmask where
 391    AARCH64_CHECK_MOV has both bits set.  Thus AARCH64_CHECK_MOV will
 392    perform all checks.  Adding new types would require changes accordingly.  */
 393 enum simd_immediate_check {
 394   AARCH64_CHECK_ORR  = 1 << 0,
 395   AARCH64_CHECK_BIC  = 1 << 1,
 396   AARCH64_CHECK_MOV  = AARCH64_CHECK_ORR | AARCH64_CHECK_BIC
 397 };
 398
 399 /* The key type that -msign-return-address should use.  */
 400 enum aarch64_key_type {
 401   AARCH64_KEY_A,
 402   AARCH64_KEY_B
 403 };
 404
 405 extern enum aarch64_key_type aarch64_ra_sign_key;
 406
 407 extern struct tune_params aarch64_tune_params;
 408
 409 /* The available SVE predicate patterns, known in the ACLE as "svpattern".  */
 410 #define AARCH64_FOR_SVPATTERN(T) \
 411   T (POW2, pow2, 0) \
 412   T (VL1, vl1, 1) \
 413   T (VL2, vl2, 2) \
 414   T (VL3, vl3, 3) \
 415   T (VL4, vl4, 4) \
 416   T (VL5, vl5, 5) \
 417   T (VL6, vl6, 6) \
 418   T (VL7, vl7, 7) \
 419   T (VL8, vl8, 8) \
 420   T (VL16, vl16, 9) \
 421   T (VL32, vl32, 10) \
 422   T (VL64, vl64, 11) \
 423   T (VL128, vl128, 12) \
 424   T (VL256, vl256, 13) \
 425   T (MUL4, mul4, 29) \
 426   T (MUL3, mul3, 30) \
 427   T (ALL, all, 31)
 428
 429 #define AARCH64_SVENUM(UPPER, LOWER, VALUE) AARCH64_SV_##UPPER = VALUE,
 430 enum aarch64_svpattern {
 431   AARCH64_FOR_SVPATTERN (AARCH64_SVENUM)
 432   AARCH64_NUM_SVPATTERNS
 433 };
 434 #undef AARCH64_SVENUM
 435
 436 /* It's convenient to divide the built-in function codes into groups,
 437    rather than having everything in a single enum.  This type enumerates
 438    those groups.  */
 439 enum aarch64_builtin_class
 440 {
 441   AARCH64_BUILTIN_GENERAL
 442 };
 443
 444 /* Built-in function codes are structured so that the low
 445    AARCH64_BUILTIN_SHIFT bits contain the aarch64_builtin_class
 446    and the upper bits contain a group-specific subcode.  */
 447 const unsigned int AARCH64_BUILTIN_SHIFT = 1;
 448
 449 /* Mask that selects the aarch64_builtin_class part of a function code.  */
 450 const unsigned int AARCH64_BUILTIN_CLASS = (1 << AARCH64_BUILTIN_SHIFT) - 1;
 451
 452 void aarch64_post_cfi_startproc (void);
 453 poly_int64 aarch64_initial_elimination_offset (unsigned, unsigned);
 454 int aarch64_get_condition_code (rtx);
 455 bool aarch64_address_valid_for_prefetch_p (rtx, bool);
 456 bool aarch64_bitmask_imm (HOST_WIDE_INT val, machine_mode);
 457 unsigned HOST_WIDE_INT aarch64_and_split_imm1 (HOST_WIDE_INT val_in);
 458 unsigned HOST_WIDE_INT aarch64_and_split_imm2 (HOST_WIDE_INT val_in);
 459 bool aarch64_and_bitmask_imm (unsigned HOST_WIDE_INT val_in, machine_mode mode);
 460 int aarch64_branch_cost (bool, bool);
 461 enum aarch64_symbol_type aarch64_classify_symbolic_expression (rtx);
 462 opt_machine_mode aarch64_vq_mode (scalar_mode);
 463 opt_machine_mode aarch64_full_sve_mode (scalar_mode);
 464 bool aarch64_can_const_movi_rtx_p (rtx x, machine_mode mode);
 465 bool aarch64_const_vec_all_same_int_p (rtx, HOST_WIDE_INT);
 466 bool aarch64_const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT,
 467                                             HOST_WIDE_INT);
 468 bool aarch64_constant_address_p (rtx);
 469 bool aarch64_emit_approx_div (rtx, rtx, rtx);
 470 bool aarch64_emit_approx_sqrt (rtx, rtx, bool);
 471 void aarch64_expand_call (rtx, rtx, rtx, bool);
 472 bool aarch64_expand_cpymem (rtx *);
 473 bool aarch64_float_const_zero_rtx_p (rtx);
 474 bool aarch64_float_const_rtx_p (rtx);
 475 bool aarch64_function_arg_regno_p (unsigned);
 476 bool aarch64_fusion_enabled_p (enum aarch64_fusion_pairs);
 477 bool aarch64_gen_cpymemqi (rtx *);
 478 bool aarch64_is_extend_from_extract (scalar_int_mode, rtx, rtx);
 479 bool aarch64_is_long_call_p (rtx);
 480 bool aarch64_is_noplt_call_p (rtx);
 481 bool aarch64_label_mentioned_p (rtx);
 482 void aarch64_declare_function_name (FILE *, const char*, tree);
 483 void aarch64_asm_output_alias (FILE *, const tree, const tree);
 484 void aarch64_asm_output_external (FILE *, tree, const char*);
 485 bool aarch64_legitimate_pic_operand_p (rtx);
 486 bool aarch64_mask_and_shift_for_ubfiz_p (scalar_int_mode, rtx, rtx);
 487 bool aarch64_masks_and_shift_for_bfi_p (scalar_int_mode, unsigned HOST_WIDE_INT,
 488                                         unsigned HOST_WIDE_INT,
 489                                         unsigned HOST_WIDE_INT);
 490 bool aarch64_zero_extend_const_eq (machine_mode, rtx, machine_mode, rtx);
 491 bool aarch64_move_imm (HOST_WIDE_INT, machine_mode);
 492 opt_machine_mode aarch64_sve_pred_mode (unsigned int);
 493 bool aarch64_sve_mode_p (machine_mode);
 494 bool aarch64_sve_cnt_immediate_p (rtx);
 495 bool aarch64_sve_scalar_inc_dec_immediate_p (rtx);
 496 bool aarch64_sve_addvl_addpl_immediate_p (rtx);
 497 bool aarch64_sve_vector_inc_dec_immediate_p (rtx);
 498 int aarch64_add_offset_temporaries (rtx);
 499 void aarch64_split_add_offset (scalar_int_mode, rtx, rtx, rtx, rtx, rtx);
 500 bool aarch64_mov_operand_p (rtx, machine_mode);
 501 rtx aarch64_reverse_mask (machine_mode, unsigned int);
 502 bool aarch64_offset_7bit_signed_scaled_p (machine_mode, poly_int64);
 503 bool aarch64_offset_9bit_signed_unscaled_p (machine_mode, poly_int64);
 504 char *aarch64_output_sve_cnt_immediate (const char *, const char *, rtx);
 505 char *aarch64_output_sve_scalar_inc_dec (rtx);
 506 char *aarch64_output_sve_addvl_addpl (rtx);
 507 char *aarch64_output_sve_vector_inc_dec (const char *, rtx);
 508 char *aarch64_output_scalar_simd_mov_immediate (rtx, scalar_int_mode);
 509 char *aarch64_output_simd_mov_immediate (rtx, unsigned,
 510                         enum simd_immediate_check w = AARCH64_CHECK_MOV);
 511 char *aarch64_output_sve_mov_immediate (rtx);
 512 bool aarch64_pad_reg_upward (machine_mode, const_tree, bool);
 513 bool aarch64_regno_ok_for_base_p (int, bool);
 514 bool aarch64_regno_ok_for_index_p (int, bool);
 515 bool aarch64_reinterpret_float_as_int (rtx value, unsigned HOST_WIDE_INT *fail);
 516 bool aarch64_simd_check_vect_par_cnst_half (rtx op, machine_mode mode,
 517                                             bool high);
 518 bool aarch64_simd_scalar_immediate_valid_for_move (rtx, scalar_int_mode);
 519 bool aarch64_simd_shift_imm_p (rtx, machine_mode, bool);
 520 bool aarch64_simd_valid_immediate (rtx, struct simd_immediate_info *,
 521                         enum simd_immediate_check w = AARCH64_CHECK_MOV);
 522 rtx aarch64_check_zero_based_sve_index_immediate (rtx);
 523 bool aarch64_sve_index_immediate_p (rtx);
 524 bool aarch64_sve_arith_immediate_p (rtx, bool);
 525 bool aarch64_sve_bitmask_immediate_p (rtx);
 526 bool aarch64_sve_dup_immediate_p (rtx);
 527 bool aarch64_sve_cmp_immediate_p (rtx, bool);
 528 bool aarch64_sve_float_arith_immediate_p (rtx, bool);
 529 bool aarch64_sve_float_mul_immediate_p (rtx);
 530 bool aarch64_split_dimode_const_store (rtx, rtx);
 531 bool aarch64_symbolic_address_p (rtx);
 532 bool aarch64_uimm12_shift (HOST_WIDE_INT);
 533 bool aarch64_use_return_insn_p (void);
 534 const char *aarch64_output_casesi (rtx *);
 535
 536 unsigned int aarch64_tlsdesc_abi_id ();
 537 enum aarch64_symbol_type aarch64_classify_symbol (rtx, HOST_WIDE_INT);
 538 enum aarch64_symbol_type aarch64_classify_tls_symbol (rtx);
 539 enum reg_class aarch64_regno_regclass (unsigned);
 540 int aarch64_asm_preferred_eh_data_format (int, int);
 541 int aarch64_fpconst_pow_of_2 (rtx);
 542 int aarch64_fpconst_pow2_recip (rtx);
 543 machine_mode aarch64_hard_regno_caller_save_mode (unsigned, unsigned,
 544                                                        machine_mode);
 545 int aarch64_uxt_size (int, HOST_WIDE_INT);
 546 int aarch64_vec_fpconst_pow_of_2 (rtx);
 547 rtx aarch64_eh_return_handler_rtx (void);
 548 rtx aarch64_mask_from_zextract_ops (rtx, rtx);
 549 const char *aarch64_output_move_struct (rtx *operands);
 550 rtx aarch64_return_addr (int, rtx);
 551 rtx aarch64_simd_gen_const_vector_dup (machine_mode, HOST_WIDE_INT);
 552 bool aarch64_simd_mem_operand_p (rtx);
 553 bool aarch64_sve_ld1r_operand_p (rtx);
 554 bool aarch64_sve_ld1rq_operand_p (rtx);
 555 bool aarch64_sve_ldr_operand_p (rtx);
 556 bool aarch64_sve_struct_memory_operand_p (rtx);
 557 rtx aarch64_simd_vect_par_cnst_half (machine_mode, int, bool);
 558 rtx aarch64_gen_stepped_int_parallel (unsigned int, int, int);
 559 bool aarch64_stepped_int_parallel_p (rtx, int);
 560 rtx aarch64_tls_get_addr (void);
 561 unsigned aarch64_dbx_register_number (unsigned);
 562 unsigned aarch64_trampoline_size (void);
 563 void aarch64_asm_output_labelref (FILE *, const char *);
 564 void aarch64_cpu_cpp_builtins (cpp_reader *);
 565 const char * aarch64_gen_far_branch (rtx *, int, const char *, const char *);
 566 const char * aarch64_output_probe_stack_range (rtx, rtx);
 567 const char * aarch64_output_probe_sve_stack_clash (rtx, rtx, rtx, rtx);
 568 void aarch64_err_no_fpadvsimd (machine_mode);
 569 void aarch64_expand_epilogue (bool);
 570 rtx aarch64_ptrue_all (unsigned int);
 571 void aarch64_expand_mov_immediate (rtx, rtx);
 572 rtx aarch64_ptrue_reg (machine_mode);
 573 rtx aarch64_pfalse_reg (machine_mode);
 574 bool aarch64_sve_pred_dominates_p (rtx *, rtx);
 575 bool aarch64_sve_same_pred_for_ptest_p (rtx *, rtx *);
 576 void aarch64_emit_sve_pred_move (rtx, rtx, rtx);
 577 void aarch64_expand_sve_mem_move (rtx, rtx, machine_mode);
 578 bool aarch64_maybe_expand_sve_subreg_move (rtx, rtx);
 579 void aarch64_split_sve_subreg_move (rtx, rtx, rtx);
 580 void aarch64_expand_prologue (void);
 581 void aarch64_expand_vector_init (rtx, rtx);
 582 void aarch64_sve_expand_vector_init (rtx, rtx);
 583 void aarch64_init_cumulative_args (CUMULATIVE_ARGS *, const_tree, rtx,
 584                                    const_tree, unsigned);
 585 void aarch64_init_expanders (void);
 586 void aarch64_init_simd_builtins (void);
 587 void aarch64_emit_call_insn (rtx);
 588 void aarch64_register_pragmas (void);
 589 void aarch64_relayout_simd_types (void);
 590 void aarch64_reset_previous_fndecl (void);
 591 bool aarch64_return_address_signing_enabled (void);
 592 bool aarch64_bti_enabled (void);
 593 void aarch64_save_restore_target_globals (tree);
 594 void aarch64_addti_scratch_regs (rtx, rtx, rtx *,
 595                                  rtx *, rtx *,
 596                                  rtx *, rtx *,
 597                                  rtx *);
 598 void aarch64_subvti_scratch_regs (rtx, rtx, rtx *,
 599                                   rtx *, rtx *,
 600                                   rtx *, rtx *, rtx *);
 601 void aarch64_expand_subvti (rtx, rtx, rtx,
 602                             rtx, rtx, rtx, rtx, bool);
 603
 604
 605 /* Initialize builtins for SIMD intrinsics.  */
 606 void init_aarch64_simd_builtins (void);
 607
 608 void aarch64_simd_emit_reg_reg_move (rtx *, machine_mode, unsigned int);
 609
 610 /* Expand builtins for SIMD intrinsics.  */
 611 rtx aarch64_simd_expand_builtin (int, tree, rtx);
 612
 613 void aarch64_simd_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT, const_tree);
 614 rtx aarch64_endian_lane_rtx (machine_mode, unsigned int);
 615
 616 void aarch64_split_128bit_move (rtx, rtx);
 617
 618 bool aarch64_split_128bit_move_p (rtx, rtx);
 619
 620 bool aarch64_mov128_immediate (rtx);
 621
 622 void aarch64_split_simd_combine (rtx, rtx, rtx);
 623
 624 void aarch64_split_simd_move (rtx, rtx);
 625
 626 /* Check for a legitimate floating point constant for FMOV.  */
 627 bool aarch64_float_const_representable_p (rtx);
 628
 629 extern int aarch64_epilogue_uses (int);
 630
 631 #if defined (RTX_CODE)
 632 void aarch64_gen_unlikely_cbranch (enum rtx_code, machine_mode cc_mode,
 633                                    rtx label_ref);
 634 bool aarch64_legitimate_address_p (machine_mode, rtx, bool,
 635                                    aarch64_addr_query_type = ADDR_QUERY_M);
 636 machine_mode aarch64_select_cc_mode (RTX_CODE, rtx, rtx);
 637 rtx aarch64_gen_compare_reg (RTX_CODE, rtx, rtx);
 638 rtx aarch64_load_tp (rtx);
 639
 640 void aarch64_expand_compare_and_swap (rtx op[]);
 641 void aarch64_split_compare_and_swap (rtx op[]);
 642
 643 void aarch64_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx);
 644
 645 bool aarch64_gen_adjusted_ldpstp (rtx *, bool, scalar_mode, RTX_CODE);
 646
 647 void aarch64_expand_sve_vec_cmp_int (rtx, rtx_code, rtx, rtx);
 648 bool aarch64_expand_sve_vec_cmp_float (rtx, rtx_code, rtx, rtx, bool);
 649 void aarch64_expand_sve_vcond (machine_mode, machine_mode, rtx *);
 650
 651 bool aarch64_prepare_sve_int_fma (rtx *, rtx_code);
 652 bool aarch64_prepare_sve_cond_int_fma (rtx *, rtx_code);
 653 #endif /* RTX_CODE */
 654
 655 bool aarch64_process_target_attr (tree);
 656 void aarch64_override_options_internal (struct gcc_options *);
 657
 658 const char *aarch64_general_mangle_builtin_type (const_tree);
 659 void aarch64_general_init_builtins (void);
 660 tree aarch64_general_fold_builtin (unsigned int, tree, unsigned int, tree *);
 661 gimple *aarch64_general_gimple_fold_builtin (unsigned int, gcall *);
 662 rtx aarch64_general_expand_builtin (unsigned int, tree, rtx);
 663 tree aarch64_general_builtin_decl (unsigned, bool);
 664 tree aarch64_general_builtin_rsqrt (unsigned int);
 665 tree aarch64_builtin_vectorized_function (unsigned int, tree, tree);
 666
 667 extern void aarch64_split_combinev16qi (rtx operands[3]);
 668 extern void aarch64_expand_vec_perm (rtx, rtx, rtx, rtx, unsigned int);
 669 extern void aarch64_expand_sve_vec_perm (rtx, rtx, rtx, rtx);
 670 extern bool aarch64_madd_needs_nop (rtx_insn *);
 671 extern void aarch64_final_prescan_insn (rtx_insn *);
 672 void aarch64_atomic_assign_expand_fenv (tree *, tree *, tree *);
 673 int aarch64_ccmp_mode_to_code (machine_mode mode);
 674
 675 bool extract_base_offset_in_addr (rtx mem, rtx *base, rtx *offset);
 676 bool aarch64_operands_ok_for_ldpstp (rtx *, bool, machine_mode);
 677 bool aarch64_operands_adjust_ok_for_ldpstp (rtx *, bool, scalar_mode);
 678 void aarch64_swap_ldrstr_operands (rtx *, bool);
 679
 680 extern void aarch64_asm_output_pool_epilogue (FILE *, const char *,
 681                                               tree, HOST_WIDE_INT);
 682
 683
 684 extern bool aarch64_classify_address (struct aarch64_address_info *, rtx,
 685                                       machine_mode, bool,
 686                                       aarch64_addr_query_type = ADDR_QUERY_M);
 687
 688 /* Defined in common/config/aarch64-common.c.  */
 689 bool aarch64_handle_option (struct gcc_options *, struct gcc_options *,
 690                              const struct cl_decoded_option *, location_t);
 691 const char *aarch64_rewrite_selected_cpu (const char *name);
 692 enum aarch64_parse_opt_result aarch64_parse_extension (const char *,
 693                                                        uint64_t *,
 694                                                        std::string *);
 695 void aarch64_get_all_extension_candidates (auto_vec<const char *> *candidates);
 696 std::string aarch64_get_extension_string_for_isa_flags (uint64_t, uint64_t);
 697
 698 /* Defined in aarch64-d.c  */
 699 extern void aarch64_d_target_versions (void);
 700
 701 rtl_opt_pass *make_pass_fma_steering (gcc::context *);
 702 rtl_opt_pass *make_pass_track_speculation (gcc::context *);
 703 rtl_opt_pass *make_pass_tag_collision_avoidance (gcc::context *);
 704 rtl_opt_pass *make_pass_insert_bti (gcc::context *ctxt);
 705
 706 poly_uint64 aarch64_regmode_natural_size (machine_mode);
 707
 708 bool aarch64_high_bits_all_ones_p (HOST_WIDE_INT);
 709
 710 struct atomic_ool_names
 711 {
 712     const char *str[5][4];
 713 };
 714
 715 rtx aarch64_atomic_ool_func(machine_mode mode, rtx model_rtx,
 716                             const atomic_ool_names *names);
 717 extern const atomic_ool_names aarch64_ool_swp_names;
 718 extern const atomic_ool_names aarch64_ool_ldadd_names;
 719 extern const atomic_ool_names aarch64_ool_ldset_names;
 720 extern const atomic_ool_names aarch64_ool_ldclr_names;
 721 extern const atomic_ool_names aarch64_ool_ldeor_names;
 722
 723 #endif /* GCC_AARCH64_PROTOS_H */