gcc/config/arm/arm-protos.h

   1 /* Prototypes for exported functions defined in arm.c and pe.c
   2    Copyright (C) 1999-2017 Free Software Foundation, Inc.
   3    Contributed by Richard Earnshaw (rearnsha@arm.com)
   4    Minor hacks by Nick Clifton (nickc@cygnus.com)
   5
   6    This file is part of GCC.
   7
   8    GCC is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3, or (at your option)
  11    any later version.
  12
  13    GCC is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GCC; see the file COPYING3.  If not see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef GCC_ARM_PROTOS_H
  23 #define GCC_ARM_PROTOS_H
  24
  25 #include "arm-flags.h"
  26 #include "arm-isa.h"
  27 #include "sbitmap.h"
  28
  29 extern enum unwind_info_type arm_except_unwind_info (struct gcc_options *);
  30 extern int use_return_insn (int, rtx);
  31 extern bool use_simple_return_p (void);
  32 extern enum reg_class arm_regno_class (int);
  33 extern void arm_load_pic_register (unsigned long);
  34 extern int arm_volatile_func (void);
  35 extern void arm_expand_prologue (void);
  36 extern void arm_expand_epilogue (bool);
  37 extern void arm_declare_function_name (FILE *, const char *, tree);
  38 extern void arm_asm_declare_function_name (FILE *, const char *, tree);
  39 extern void thumb2_expand_return (bool);
  40 extern const char *arm_strip_name_encoding (const char *);
  41 extern void arm_asm_output_labelref (FILE *, const char *);
  42 extern void thumb2_asm_output_opcode (FILE *);
  43 extern unsigned long arm_current_func_type (void);
  44 extern HOST_WIDE_INT arm_compute_initial_elimination_offset (unsigned int,
  45                                                              unsigned int);
  46 extern HOST_WIDE_INT thumb_compute_initial_elimination_offset (unsigned int,
  47                                                                unsigned int);
  48 extern unsigned int arm_dbx_register_number (unsigned int);
  49 extern void arm_output_fn_unwind (FILE *, bool);
  50
  51 extern rtx arm_expand_builtin (tree exp, rtx target, rtx subtarget
  52                                ATTRIBUTE_UNUSED, enum machine_mode mode
  53                                ATTRIBUTE_UNUSED, int ignore ATTRIBUTE_UNUSED);
  54 extern tree arm_builtin_decl (unsigned code, bool initialize_p
  55                               ATTRIBUTE_UNUSED);
  56 extern void arm_init_builtins (void);
  57 extern void arm_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update);
  58 extern rtx arm_simd_vect_par_cnst_half (machine_mode mode, bool high);
  59 extern bool arm_simd_check_vect_par_cnst_half_p (rtx op, machine_mode mode,
  60                                                  bool high);
  61 #ifdef RTX_CODE
  62 extern void arm_gen_unlikely_cbranch (enum rtx_code, machine_mode cc_mode,
  63                                       rtx label_ref);
  64 extern bool arm_vector_mode_supported_p (machine_mode);
  65 extern bool arm_small_register_classes_for_mode_p (machine_mode);
  66 extern int arm_hard_regno_mode_ok (unsigned int, machine_mode);
  67 extern bool arm_modes_tieable_p (machine_mode, machine_mode);
  68 extern int const_ok_for_arm (HOST_WIDE_INT);
  69 extern int const_ok_for_op (HOST_WIDE_INT, enum rtx_code);
  70 extern int const_ok_for_dimode_op (HOST_WIDE_INT, enum rtx_code);
  71 extern int arm_split_constant (RTX_CODE, machine_mode, rtx,
  72                                HOST_WIDE_INT, rtx, rtx, int);
  73 extern int legitimate_pic_operand_p (rtx);
  74 extern rtx legitimize_pic_address (rtx, machine_mode, rtx);
  75 extern rtx legitimize_tls_address (rtx, rtx);
  76 extern bool arm_legitimate_address_p (machine_mode, rtx, bool);
  77 extern int arm_legitimate_address_outer_p (machine_mode, rtx, RTX_CODE, int);
  78 extern int thumb_legitimate_offset_p (machine_mode, HOST_WIDE_INT);
  79 extern int thumb1_legitimate_address_p (machine_mode, rtx, int);
  80 extern bool ldm_stm_operation_p (rtx, bool, machine_mode mode,
  81                                  bool, bool);
  82 extern int arm_const_double_rtx (rtx);
  83 extern int vfp3_const_double_rtx (rtx);
  84 extern int neon_immediate_valid_for_move (rtx, machine_mode, rtx *, int *);
  85 extern int neon_immediate_valid_for_logic (rtx, machine_mode, int, rtx *,
  86                                            int *);
  87 extern int neon_immediate_valid_for_shift (rtx, machine_mode, rtx *,
  88                                            int *, bool);
  89 extern char *neon_output_logic_immediate (const char *, rtx *,
  90                                           machine_mode, int, int);
  91 extern char *neon_output_shift_immediate (const char *, char, rtx *,
  92                                           machine_mode, int, bool);
  93 extern void neon_pairwise_reduce (rtx, rtx, machine_mode,
  94                                   rtx (*) (rtx, rtx, rtx));
  95 extern rtx neon_make_constant (rtx);
  96 extern tree arm_builtin_vectorized_function (unsigned int, tree, tree);
  97 extern void neon_expand_vector_init (rtx, rtx);
  98 extern void neon_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT, const_tree);
  99 extern void arm_const_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
 100 extern HOST_WIDE_INT neon_element_bits (machine_mode);
 101 extern void neon_emit_pair_result_insn (machine_mode,
 102                                         rtx (*) (rtx, rtx, rtx, rtx),
 103                                         rtx, rtx, rtx);
 104 extern void neon_disambiguate_copy (rtx *, rtx *, rtx *, unsigned int);
 105 extern void neon_split_vcombine (rtx op[3]);
 106 extern enum reg_class coproc_secondary_reload_class (machine_mode, rtx,
 107                                                      bool);
 108 extern bool arm_tls_referenced_p (rtx);
 109
 110 extern int arm_coproc_mem_operand (rtx, bool);
 111 extern int neon_vector_mem_operand (rtx, int, bool);
 112 extern int neon_struct_mem_operand (rtx);
 113
 114 extern int tls_mentioned_p (rtx);
 115 extern int symbol_mentioned_p (rtx);
 116 extern int label_mentioned_p (rtx);
 117 extern RTX_CODE minmax_code (rtx);
 118 extern bool arm_sat_operator_match (rtx, rtx, int *, bool *);
 119 extern int adjacent_mem_locations (rtx, rtx);
 120 extern bool gen_ldm_seq (rtx *, int, bool);
 121 extern bool gen_stm_seq (rtx *, int);
 122 extern bool gen_const_stm_seq (rtx *, int);
 123 extern rtx arm_gen_load_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 124 extern rtx arm_gen_store_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 125 extern bool offset_ok_for_ldrd_strd (HOST_WIDE_INT);
 126 extern bool operands_ok_ldrd_strd (rtx, rtx, rtx, HOST_WIDE_INT, bool, bool);
 127 extern bool gen_operands_ldrd_strd (rtx *, bool, bool, bool);
 128 extern int arm_gen_movmemqi (rtx *);
 129 extern bool gen_movmem_ldrd_strd (rtx *);
 130 extern machine_mode arm_select_cc_mode (RTX_CODE, rtx, rtx);
 131 extern machine_mode arm_select_dominance_cc_mode (rtx, rtx,
 132                                                        HOST_WIDE_INT);
 133 extern rtx arm_gen_compare_reg (RTX_CODE, rtx, rtx, rtx);
 134 extern rtx arm_gen_return_addr_mask (void);
 135 extern void arm_reload_in_hi (rtx *);
 136 extern void arm_reload_out_hi (rtx *);
 137 extern int arm_max_const_double_inline_cost (void);
 138 extern int arm_const_double_inline_cost (rtx);
 139 extern bool arm_const_double_by_parts (rtx);
 140 extern bool arm_const_double_by_immediates (rtx);
 141 extern void arm_emit_call_insn (rtx, rtx, bool);
 142 bool detect_cmse_nonsecure_call (tree);
 143 extern const char *output_call (rtx *);
 144 void arm_emit_movpair (rtx, rtx);
 145 extern const char *output_mov_long_double_arm_from_arm (rtx *);
 146 extern const char *output_move_double (rtx *, bool, int *count);
 147 extern const char *output_move_quad (rtx *);
 148 extern int arm_count_output_move_double_insns (rtx *);
 149 extern const char *output_move_vfp (rtx *operands);
 150 extern const char *output_move_neon (rtx *operands);
 151 extern int arm_attr_length_move_neon (rtx_insn *);
 152 extern int arm_address_offset_is_imm (rtx_insn *);
 153 extern const char *output_add_immediate (rtx *);
 154 extern const char *arithmetic_instr (rtx, int);
 155 extern void output_ascii_pseudo_op (FILE *, const unsigned char *, int);
 156 extern const char *output_return_instruction (rtx, bool, bool, bool);
 157 extern const char *output_probe_stack_range (rtx, rtx);
 158 extern void arm_poke_function_name (FILE *, const char *);
 159 extern void arm_final_prescan_insn (rtx_insn *);
 160 extern int arm_debugger_arg_offset (int, rtx);
 161 extern bool arm_is_long_call_p (tree);
 162 extern int    arm_emit_vector_const (FILE *, rtx);
 163 extern void arm_emit_fp16_const (rtx c);
 164 extern const char * arm_output_load_gr (rtx *);
 165 extern const char *vfp_output_vstmd (rtx *);
 166 extern void arm_output_multireg_pop (rtx *, bool, rtx, bool, bool);
 167 extern void arm_set_return_address (rtx, rtx);
 168 extern int arm_eliminable_register (rtx);
 169 extern const char *arm_output_shift(rtx *, int);
 170 extern const char *arm_output_iwmmxt_shift_immediate (const char *, rtx *, bool);
 171 extern const char *arm_output_iwmmxt_tinsr (rtx *);
 172 extern unsigned int arm_sync_loop_insns (rtx , rtx *);
 173 extern int arm_attr_length_push_multi(rtx, rtx);
 174 extern int arm_attr_length_pop_multi(rtx *, bool, bool);
 175 extern void arm_expand_compare_and_swap (rtx op[]);
 176 extern void arm_split_compare_and_swap (rtx op[]);
 177 extern void arm_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx);
 178 extern rtx arm_load_tp (rtx);
 179 extern bool arm_coproc_builtin_available (enum unspecv);
 180 extern bool arm_coproc_ldc_stc_legitimate_address (rtx);
 181
 182 #if defined TREE_CODE
 183 extern void arm_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree);
 184 extern bool arm_pad_arg_upward (machine_mode, const_tree);
 185 extern bool arm_pad_reg_upward (machine_mode, tree, int);
 186 #endif
 187 extern int arm_apply_result_size (void);
 188
 189 #endif /* RTX_CODE */
 190
 191 /* Thumb functions.  */
 192 extern void arm_init_expanders (void);
 193 extern const char *thumb1_unexpanded_epilogue (void);
 194 extern void thumb1_expand_prologue (void);
 195 extern void thumb1_expand_epilogue (void);
 196 extern const char *thumb1_output_interwork (void);
 197 extern int thumb_shiftable_const (unsigned HOST_WIDE_INT);
 198 #ifdef RTX_CODE
 199 extern enum arm_cond_code maybe_get_arm_condition_code (rtx);
 200 extern void thumb1_final_prescan_insn (rtx_insn *);
 201 extern void thumb2_final_prescan_insn (rtx_insn *);
 202 extern const char *thumb_load_double_from_address (rtx *);
 203 extern const char *thumb_output_move_mem_multiple (int, rtx *);
 204 extern const char *thumb_call_via_reg (rtx);
 205 extern void thumb_expand_movmemqi (rtx *);
 206 extern rtx arm_return_addr (int, rtx);
 207 extern void thumb_reload_out_hi (rtx *);
 208 extern void thumb_set_return_address (rtx, rtx);
 209 extern const char *thumb1_output_casesi (rtx *);
 210 extern const char *thumb2_output_casesi (rtx *);
 211 #endif
 212
 213 /* Defined in pe.c.  */
 214 extern int arm_dllexport_name_p (const char *);
 215 extern int arm_dllimport_name_p (const char *);
 216
 217 #ifdef TREE_CODE
 218 extern void arm_pe_unique_section (tree, int);
 219 extern void arm_pe_encode_section_info (tree, rtx, int);
 220 extern int arm_dllexport_p (tree);
 221 extern int arm_dllimport_p (tree);
 222 extern void arm_mark_dllexport (tree);
 223 extern void arm_mark_dllimport (tree);
 224 extern bool arm_change_mode_p (tree);
 225 #endif
 226
 227 extern tree arm_valid_target_attribute_tree (tree, struct gcc_options *,
 228                                              struct gcc_options *);
 229 extern void arm_configure_build_target (struct arm_build_target *,
 230                                         struct cl_target_option *,
 231                                         struct gcc_options *, bool);
 232 extern void arm_pr_long_calls (struct cpp_reader *);
 233 extern void arm_pr_no_long_calls (struct cpp_reader *);
 234 extern void arm_pr_long_calls_off (struct cpp_reader *);
 235
 236 extern const char *arm_mangle_type (const_tree);
 237 extern const char *arm_mangle_builtin_type (const_tree);
 238
 239 extern void arm_order_regs_for_local_alloc (void);
 240
 241 extern int arm_max_conditional_execute ();
 242
 243 /* Vectorizer cost model implementation.  */
 244 struct cpu_vec_costs {
 245   const int scalar_stmt_cost;   /* Cost of any scalar operation, excluding
 246                                    load and store.  */
 247   const int scalar_load_cost;   /* Cost of scalar load.  */
 248   const int scalar_store_cost;  /* Cost of scalar store.  */
 249   const int vec_stmt_cost;      /* Cost of any vector operation, excluding
 250                                    load, store, vector-to-scalar and
 251                                    scalar-to-vector operation.  */
 252   const int vec_to_scalar_cost;    /* Cost of vect-to-scalar operation.  */
 253   const int scalar_to_vec_cost;    /* Cost of scalar-to-vector operation.  */
 254   const int vec_align_load_cost;   /* Cost of aligned vector load.  */
 255   const int vec_unalign_load_cost; /* Cost of unaligned vector load.  */
 256   const int vec_unalign_store_cost; /* Cost of unaligned vector load.  */
 257   const int vec_store_cost;        /* Cost of vector store.  */
 258   const int cond_taken_branch_cost;    /* Cost of taken branch for vectorizer
 259                                           cost model.  */
 260   const int cond_not_taken_branch_cost;/* Cost of not taken branch for
 261                                           vectorizer cost model.  */
 262 };
 263
 264 #ifdef RTX_CODE
 265 /* This needs to be here because we need RTX_CODE and similar.  */
 266
 267 struct cpu_cost_table;
 268
 269 /* Dump function ARM_PRINT_TUNE_INFO should be updated whenever this
 270    structure is modified.  */
 271
 272 struct tune_params
 273 {
 274   const struct cpu_cost_table *insn_extra_cost;
 275   bool (*sched_adjust_cost) (rtx_insn *, int, rtx_insn *, int *);
 276   int (*branch_cost) (bool, bool);
 277   /* Vectorizer costs.  */
 278   const struct cpu_vec_costs* vec_costs;
 279   int constant_limit;
 280   /* Maximum number of instructions to conditionalise.  */
 281   int max_insns_skipped;
 282   /* Maximum number of instructions to inline calls to memset.  */
 283   int max_insns_inline_memset;
 284   /* Issue rate of the processor.  */
 285   unsigned int issue_rate;
 286   /* Explicit prefetch data.  */
 287   struct
 288     {
 289       int num_slots;
 290       int l1_cache_size;
 291       int l1_cache_line_size;
 292     } prefetch;
 293   enum {PREF_CONST_POOL_FALSE, PREF_CONST_POOL_TRUE}
 294     prefer_constant_pool: 1;
 295   /* Prefer STRD/LDRD instructions over PUSH/POP/LDM/STM.  */
 296   enum {PREF_LDRD_FALSE, PREF_LDRD_TRUE} prefer_ldrd_strd: 1;
 297   /* The preference for non short cirtcuit operation when optimizing for
 298      performance. The first element covers Thumb state and the second one
 299      is for ARM state.  */
 300   enum log_op_non_short_circuit {LOG_OP_NON_SHORT_CIRCUIT_FALSE,
 301                                  LOG_OP_NON_SHORT_CIRCUIT_TRUE};
 302   log_op_non_short_circuit logical_op_non_short_circuit_thumb: 1;
 303   log_op_non_short_circuit logical_op_non_short_circuit_arm: 1;
 304   /* Prefer 32-bit encoding instead of flag-setting 16-bit encoding.  */
 305   enum {DISPARAGE_FLAGS_NEITHER, DISPARAGE_FLAGS_PARTIAL, DISPARAGE_FLAGS_ALL}
 306     disparage_flag_setting_t16_encodings: 2;
 307   enum {PREF_NEON_64_FALSE, PREF_NEON_64_TRUE} prefer_neon_for_64bits: 1;
 308   /* Prefer to inline string operations like memset by using Neon.  */
 309   enum {PREF_NEON_STRINGOPS_FALSE, PREF_NEON_STRINGOPS_TRUE}
 310     string_ops_prefer_neon: 1;
 311   /* Bitfield encoding the fusible pairs of instructions.  Use FUSE_OPS
 312      in an initializer if multiple fusion operations are supported on a
 313      target.  */
 314   enum fuse_ops
 315   {
 316     FUSE_NOTHING   = 0,
 317     FUSE_MOVW_MOVT = 1 << 0,
 318     FUSE_AES_AESMC = 1 << 1
 319   } fusible_ops: 2;
 320   /* Depth of scheduling queue to check for L2 autoprefetcher.  */
 321   enum {SCHED_AUTOPREF_OFF, SCHED_AUTOPREF_RANK, SCHED_AUTOPREF_FULL}
 322     sched_autopref: 2;
 323 };
 324
 325 /* Smash multiple fusion operations into a type that can be used for an
 326    initializer.  */
 327 #define FUSE_OPS(x) ((tune_params::fuse_ops) (x))
 328
 329 extern const struct tune_params *current_tune;
 330 extern int vfp3_const_double_for_fract_bits (rtx);
 331 /* return power of two from operand, otherwise 0.  */
 332 extern int vfp3_const_double_for_bits (rtx);
 333
 334 extern void arm_emit_coreregs_64bit_shift (enum rtx_code, rtx, rtx, rtx, rtx,
 335                                            rtx);
 336 extern bool arm_fusion_enabled_p (tune_params::fuse_ops);
 337 extern bool arm_valid_symbolic_address_p (rtx);
 338 extern bool arm_validize_comparison (rtx *, rtx *, rtx *);
 339 #endif /* RTX_CODE */
 340
 341 extern bool arm_gen_setmem (rtx *);
 342 extern void arm_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel);
 343 extern bool arm_expand_vec_perm_const (rtx target, rtx op0, rtx op1, rtx sel);
 344
 345 extern bool arm_autoinc_modes_ok_p (machine_mode, enum arm_auto_incmodes);
 346
 347 extern void arm_emit_eabi_attribute (const char *, int, int);
 348
 349 extern void arm_reset_previous_fndecl (void);
 350 extern void save_restore_target_globals (tree);
 351
 352 /* Defined in gcc/common/config/arm-common.c.  */
 353 extern const char *arm_rewrite_selected_cpu (const char *name);
 354
 355 /* Defined in gcc/common/config/arm-c.c.  */
 356 extern void arm_lang_object_attributes_init (void);
 357 extern void arm_register_target_pragmas (void);
 358 extern void arm_cpu_cpp_builtins (struct cpp_reader *);
 359
 360 extern bool arm_is_constant_pool_ref (rtx);
 361
 362 /* The bits in this mask specify which instruction scheduling options should
 363    be used.  */
 364 extern unsigned int tune_flags;
 365
 366 /* Nonzero if this chip supports the ARM Architecture 3M extensions.  */
 367 extern int arm_arch3m;
 368
 369 /* Nonzero if this chip supports the ARM Architecture 4 extensions.  */
 370 extern int arm_arch4;
 371
 372 /* Nonzero if this chip supports the ARM Architecture 4t extensions.  */
 373 extern int arm_arch4t;
 374
 375 /* Nonzero if this chip supports the ARM Architecture 5 extensions.  */
 376 extern int arm_arch5;
 377
 378 /* Nonzero if this chip supports the ARM Architecture 5E extensions.  */
 379 extern int arm_arch5e;
 380
 381 /* Nonzero if this chip supports the ARM Architecture 6 extensions.  */
 382 extern int arm_arch6;
 383
 384 /* Nonzero if this chip supports the ARM 6K extensions.  */
 385 extern int arm_arch6k;
 386
 387 /* Nonzero if this chip supports the ARM 6KZ extensions.  */
 388 extern int arm_arch6kz;
 389
 390 /* Nonzero if instructions present in ARMv6-M can be used.  */
 391 extern int arm_arch6m;
 392
 393 /* Nonzero if this chip supports the ARM 7 extensions.  */
 394 extern int arm_arch7;
 395
 396 /* Nonzero if this chip supports the ARM 7ve extensions.  */
 397 extern int arm_arch7ve;
 398
 399 /* Nonzero if instructions not present in the 'M' profile can be used.  */
 400 extern int arm_arch_notm;
 401
 402 /* Nonzero if instructions present in ARMv7E-M can be used.  */
 403 extern int arm_arch7em;
 404
 405 /* Nonzero if instructions present in ARMv8 can be used.  */
 406 extern int arm_arch8;
 407
 408 /* Nonzero if this chip can benefit from load scheduling.  */
 409 extern int arm_ld_sched;
 410
 411 /* Nonzero if this chip is a StrongARM.  */
 412 extern int arm_tune_strongarm;
 413
 414 /* Nonzero if this chip supports Intel Wireless MMX technology.  */
 415 extern int arm_arch_iwmmxt;
 416
 417 /* Nonzero if this chip supports Intel Wireless MMX2 technology.  */
 418 extern int arm_arch_iwmmxt2;
 419
 420 /* Nonzero if this chip is an XScale.  */
 421 extern int arm_arch_xscale;
 422
 423 /* Nonzero if tuning for XScale  */
 424 extern int arm_tune_xscale;
 425
 426 /* Nonzero if we want to tune for stores that access the write-buffer.
 427    This typically means an ARM6 or ARM7 with MMU or MPU.  */
 428 extern int arm_tune_wbuf;
 429
 430 /* Nonzero if tuning for Cortex-A9.  */
 431 extern int arm_tune_cortex_a9;
 432
 433 /* Nonzero if we should define __THUMB_INTERWORK__ in the
 434    preprocessor.
 435    XXX This is a bit of a hack, it's intended to help work around
 436    problems in GLD which doesn't understand that armv5t code is
 437    interworking clean.  */
 438 extern int arm_cpp_interwork;
 439
 440 /* Nonzero if chip supports Thumb 1.  */
 441 extern int arm_arch_thumb1;
 442
 443 /* Nonzero if chip supports Thumb 2.  */
 444 extern int arm_arch_thumb2;
 445
 446 /* Nonzero if chip supports integer division instruction.  */
 447 extern int arm_arch_arm_hwdiv;
 448 extern int arm_arch_thumb_hwdiv;
 449
 450 /* Nonzero if chip disallows volatile memory access in IT block.  */
 451 extern int arm_arch_no_volatile_ce;
 452
 453 /* Nonzero if we should use Neon to handle 64-bits operations rather
 454    than core registers.  */
 455 extern int prefer_neon_for_64bits;
 456
 457 /* Structure defining the current overall architectural target and tuning.  */
 458 struct arm_build_target
 459 {
 460   /* Name of the target CPU, if known, or NULL if the target CPU was not
 461      specified by the user (and inferred from the -march option).  */
 462   const char *core_name;
 463   /* Name of the target ARCH.  NULL if there is a selected CPU.  */
 464   const char *arch_name;
 465   /* Preprocessor substring (never NULL).  */
 466   const char *arch_pp_name;
 467   /* CPU identifier for the core we're compiling for (architecturally).  */
 468   enum processor_type arch_core;
 469   /* The base architecture value.  */
 470   enum base_architecture base_arch;
 471   /* Bitmap encapsulating the isa_bits for the target environment.  */
 472   sbitmap isa;
 473   /* Flags used for tuning.  Long term, these move into tune_params.  */
 474   unsigned int tune_flags;
 475   /* Tables with more detailed tuning information.  */
 476   const struct tune_params *tune;
 477   /* CPU identifier for the tuning target.  */
 478   enum processor_type tune_core;
 479 };
 480
 481 extern struct arm_build_target arm_active_target;
 482
 483
 484 #endif /* ! GCC_ARM_PROTOS_H */