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