gcc/targhooks.h

   1 /* Default target hook functions.
   2    Copyright (C) 2003-2017 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GCC_TARGHOOKS_H
  21 #define GCC_TARGHOOKS_H
  22
  23 extern bool default_legitimate_address_p (machine_mode, rtx, bool);
  24
  25 extern void default_external_libcall (rtx);
  26 extern rtx default_legitimize_address (rtx, rtx, machine_mode);
  27 extern bool default_legitimize_address_displacement (rtx *, rtx *,
  28                                                      machine_mode);
  29 extern bool default_const_not_ok_for_debug_p (rtx);
  30
  31 extern int default_unspec_may_trap_p (const_rtx, unsigned);
  32 extern machine_mode default_promote_function_mode (const_tree, machine_mode,
  33                                                         int *, const_tree, int);
  34 extern machine_mode default_promote_function_mode_always_promote
  35                         (const_tree, machine_mode, int *, const_tree, int);
  36
  37 extern machine_mode default_cc_modes_compatible (machine_mode,
  38                                                       machine_mode);
  39
  40 extern bool default_return_in_memory (const_tree, const_tree);
  41
  42 extern rtx default_expand_builtin_saveregs (void);
  43 extern void default_setup_incoming_varargs (cumulative_args_t, machine_mode, tree, int *, int);
  44 extern rtx default_builtin_setjmp_frame_value (void);
  45 extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
  46
  47 extern scalar_int_mode default_eh_return_filter_mode (void);
  48 extern scalar_int_mode default_libgcc_cmp_return_mode (void);
  49 extern scalar_int_mode default_libgcc_shift_count_mode (void);
  50 extern scalar_int_mode default_unwind_word_mode (void);
  51 extern unsigned HOST_WIDE_INT default_shift_truncation_mask
  52   (machine_mode);
  53 extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
  54 extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode);
  55
  56 extern tree default_stack_protect_guard (void);
  57 extern tree default_external_stack_protect_fail (void);
  58 extern tree default_hidden_stack_protect_fail (void);
  59
  60 extern machine_mode default_mode_for_suffix (char);
  61
  62 extern tree default_cxx_guard_type (void);
  63 extern tree default_cxx_get_cookie_size (tree);
  64
  65 extern bool hook_pass_by_reference_must_pass_in_stack
  66   (cumulative_args_t, machine_mode mode, const_tree, bool);
  67 extern bool hook_callee_copies_named
  68   (cumulative_args_t ca, machine_mode, const_tree, bool);
  69
  70 extern void default_print_operand (FILE *, rtx, int);
  71 extern void default_print_operand_address (FILE *, machine_mode, rtx);
  72 extern bool default_print_operand_punct_valid_p (unsigned char);
  73 extern tree default_mangle_assembler_name (const char *);
  74
  75 extern bool default_scalar_mode_supported_p (scalar_mode);
  76 extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
  77 extern opt_scalar_float_mode default_floatn_mode (int, bool);
  78 extern bool targhook_words_big_endian (void);
  79 extern bool targhook_float_words_big_endian (void);
  80 extern bool default_float_exceptions_rounding_supported_p (void);
  81 extern bool default_decimal_float_supported_p (void);
  82 extern bool default_fixed_point_supported_p (void);
  83
  84 extern bool default_has_ifunc_p (void);
  85
  86 extern const char * default_invalid_within_doloop (const rtx_insn *);
  87
  88 extern tree default_builtin_vectorized_function (unsigned int, tree, tree);
  89 extern tree default_builtin_md_vectorized_function (tree, tree, tree);
  90
  91 extern tree default_builtin_vectorized_conversion (unsigned int, tree, tree);
  92
  93 extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
  94
  95 extern tree default_builtin_reciprocal (tree);
  96
  97 extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode);
  98 extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT);
  99 extern HOST_WIDE_INT constant_alignment_word_strings (const_tree,
 100                                                       HOST_WIDE_INT);
 101 extern HOST_WIDE_INT default_vector_alignment (const_tree);
 102
 103 extern HOST_WIDE_INT default_preferred_vector_alignment (const_tree);
 104 extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
 105 extern bool
 106 default_builtin_support_vector_misalignment (machine_mode mode,
 107                                              const_tree,
 108                                              int, bool);
 109 extern machine_mode default_preferred_simd_mode (scalar_mode mode);
 110 extern unsigned int default_autovectorize_vector_sizes (void);
 111 extern opt_machine_mode default_get_mask_mode (unsigned, unsigned);
 112 extern void *default_init_cost (struct loop *);
 113 extern unsigned default_add_stmt_cost (void *, int, enum vect_cost_for_stmt,
 114                                        struct _stmt_vec_info *, int,
 115                                        enum vect_cost_model_location);
 116 extern void default_finish_cost (void *, unsigned *, unsigned *, unsigned *);
 117 extern void default_destroy_cost_data (void *);
 118
 119 /* OpenACC hooks.  */
 120 extern bool default_goacc_validate_dims (tree, int [], int);
 121 extern int default_goacc_dim_limit (int);
 122 extern bool default_goacc_fork_join (gcall *, const int [], bool);
 123 extern void default_goacc_reduction (gcall *);
 124
 125 /* These are here, and not in hooks.[ch], because not all users of
 126    hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS.  */
 127
 128 extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
 129 extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
 130
 131 extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
 132   (cumulative_args_t, machine_mode, const_tree, bool);
 133 extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
 134   (cumulative_args_t, machine_mode, const_tree, bool);
 135 extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
 136   (cumulative_args_t, machine_mode, tree, bool);
 137 extern const char *hook_invalid_arg_for_unprototyped_fn
 138   (const_tree, const_tree, const_tree);
 139 extern void default_function_arg_advance
 140   (cumulative_args_t, machine_mode, const_tree, bool);
 141 extern HOST_WIDE_INT default_function_arg_offset (machine_mode, const_tree);
 142 extern pad_direction default_function_arg_padding (machine_mode, const_tree);
 143 extern rtx default_function_arg
 144   (cumulative_args_t, machine_mode, const_tree, bool);
 145 extern rtx default_function_incoming_arg
 146   (cumulative_args_t, machine_mode, const_tree, bool);
 147 extern unsigned int default_function_arg_boundary (machine_mode,
 148                                                    const_tree);
 149 extern unsigned int default_function_arg_round_boundary (machine_mode,
 150                                                          const_tree);
 151 extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
 152 extern rtx default_function_value (const_tree, const_tree, bool);
 153 extern rtx default_libcall_value (machine_mode, const_rtx);
 154 extern bool default_function_value_regno_p (const unsigned int);
 155 extern rtx default_internal_arg_pointer (void);
 156 extern rtx default_static_chain (const_tree, bool);
 157 extern void default_trampoline_init (rtx, tree, rtx);
 158 extern int default_return_pops_args (tree, tree, int);
 159 extern reg_class_t default_branch_target_register_class (void);
 160 extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t,
 161                                                             reg_class_t);
 162 extern bool default_lra_p (void);
 163 extern int default_register_priority (int);
 164 extern bool default_register_usage_leveling_p (void);
 165 extern bool default_different_addr_displacement_p (void);
 166 extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
 167                                              machine_mode,
 168                                              secondary_reload_info *);
 169 extern machine_mode default_secondary_memory_needed_mode (machine_mode);
 170 extern void default_target_option_override (void);
 171 extern void hook_void_bitmap (bitmap);
 172 extern int default_reloc_rw_mask (void);
 173 extern tree default_mangle_decl_assembler_name (tree, tree);
 174 extern tree default_emutls_var_fields (tree, tree *);
 175 extern tree default_emutls_var_init (tree, tree, tree);
 176 extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode);
 177 extern bool default_hard_regno_scratch_ok (unsigned int);
 178 extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
 179 extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
 180 extern bool default_target_option_pragma_parse (tree, tree);
 181 extern bool default_target_can_inline_p (tree, tree);
 182 extern bool default_valid_pointer_mode (scalar_int_mode);
 183 extern bool default_ref_may_alias_errno (struct ao_ref *);
 184 extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t);
 185 extern scalar_int_mode default_addr_space_address_mode (addr_space_t);
 186 extern bool default_addr_space_valid_pointer_mode (scalar_int_mode,
 187                                                    addr_space_t);
 188 extern bool default_addr_space_legitimate_address_p (machine_mode, rtx,
 189                                                      bool, addr_space_t);
 190 extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
 191                                                   addr_space_t);
 192 extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
 193 extern bool default_addr_space_zero_address_valid (addr_space_t);
 194 extern int default_addr_space_debug (addr_space_t);
 195 extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
 196 extern rtx default_addr_space_convert (rtx, tree, tree);
 197 extern unsigned int default_case_values_threshold (void);
 198 extern bool default_have_conditional_execution (void);
 199
 200 extern bool default_libc_has_function (enum function_class);
 201 extern bool no_c99_libc_has_function (enum function_class);
 202 extern bool gnu_libc_has_function (enum function_class);
 203
 204 extern tree default_builtin_tm_load_store (tree);
 205
 206 extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
 207 extern int default_register_move_cost (machine_mode, reg_class_t,
 208                                        reg_class_t);
 209 extern bool default_slow_unaligned_access (machine_mode, unsigned int);
 210
 211 extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
 212                                                     unsigned int,
 213                                                     enum by_pieces_operation,
 214                                                     bool);
 215 extern int default_compare_by_pieces_branch_ratio (machine_mode);
 216
 217 extern void default_print_patchable_function_entry (FILE *,
 218                                                     unsigned HOST_WIDE_INT,
 219                                                     bool);
 220 extern bool default_profile_before_prologue (void);
 221 extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
 222 extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
 223 extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
 224 extern bool default_class_likely_spilled_p (reg_class_t);
 225 extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
 226
 227 extern enum unwind_info_type default_debug_unwind_info (void);
 228
 229 extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
 230
 231 extern int default_label_align_after_barrier_max_skip (rtx_insn *);
 232 extern int default_loop_align_max_skip (rtx_insn *);
 233 extern int default_label_align_max_skip (rtx_insn *);
 234 extern int default_jump_align_max_skip (rtx_insn *);
 235 extern section * default_function_section(tree decl, enum node_frequency freq,
 236                                           bool startup, bool exit);
 237 extern machine_mode default_dwarf_frame_reg_mode (int);
 238 extern machine_mode default_get_reg_raw_mode (int);
 239 extern bool default_keep_leaf_when_profiled ();
 240
 241 extern void *default_get_pch_validity (size_t *);
 242 extern const char *default_pch_valid_p (const void *, size_t);
 243
 244 extern void default_asm_output_ident_directive (const char*);
 245
 246 extern scalar_int_mode default_cstore_mode (enum insn_code);
 247 extern bool default_member_type_forces_blk (const_tree, machine_mode);
 248 extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
 249 extern tree build_va_arg_indirect_ref (tree);
 250 extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
 251 extern bool can_use_doloop_if_innermost (const widest_int &,
 252                                          const widest_int &,
 253                                          unsigned int, bool);
 254
 255 extern rtx default_load_bounds_for_arg (rtx, rtx, rtx);
 256 extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx);
 257 extern rtx default_load_returned_bounds (rtx);
 258 extern void default_store_returned_bounds (rtx,rtx);
 259 extern tree default_chkp_bound_type (void);
 260 extern machine_mode default_chkp_bound_mode (void);
 261 extern tree default_builtin_chkp_function (unsigned int);
 262 extern rtx default_chkp_function_value_bounds (const_tree, const_tree, bool);
 263 extern tree default_chkp_make_bounds_constant (HOST_WIDE_INT lb, HOST_WIDE_INT ub);
 264 extern int default_chkp_initialize_bounds (tree var, tree lb, tree ub,
 265                                            tree *stmts);
 266 extern void default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED,
 267                                                   machine_mode mode ATTRIBUTE_UNUSED,
 268                                                   tree type ATTRIBUTE_UNUSED,
 269                                                   int *pretend_arg_size ATTRIBUTE_UNUSED,
 270                                                   int second_time ATTRIBUTE_UNUSED);
 271 extern bool default_optab_supported_p (int, machine_mode, machine_mode,
 272                                        optimization_type);
 273 extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
 274 extern bool default_noce_conversion_profitable_p (rtx_insn *,
 275                                                   struct noce_if_info *);
 276 extern unsigned int default_min_arithmetic_precision (void);
 277
 278 extern enum flt_eval_method
 279 default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED);
 280 extern bool default_stack_clash_protection_final_dynamic_probe (rtx);
 281
 282 #endif /* GCC_TARGHOOKS_H */