1 /* Default target hook functions. 2 Copyright (C) 2003-2020 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 poly_int64, 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 int default_bitfield_may_trap_p (const_rtx, unsigned); 33 extern machine_mode default_promote_function_mode (const_tree, machine_mode, 34 int *, const_tree, int); 35 extern machine_mode default_promote_function_mode_always_promote 36 (const_tree, machine_mode, int *, const_tree, int); 37 38 extern machine_mode default_cc_modes_compatible (machine_mode, 39 machine_mode); 40 41 extern bool default_return_in_memory (const_tree, const_tree); 42 43 extern rtx default_expand_builtin_saveregs (void); 44 extern void default_setup_incoming_varargs (cumulative_args_t, 45 const function_arg_info &, 46 int *, int); 47 extern rtx default_builtin_setjmp_frame_value (void); 48 extern bool default_pretend_outgoing_varargs_named (cumulative_args_t); 49 50 extern scalar_int_mode default_eh_return_filter_mode (void); 51 extern scalar_int_mode default_libgcc_cmp_return_mode (void); 52 extern scalar_int_mode default_libgcc_shift_count_mode (void); 53 extern scalar_int_mode default_unwind_word_mode (void); 54 extern unsigned HOST_WIDE_INT default_shift_truncation_mask 55 (machine_mode); 56 extern unsigned int default_min_divisions_for_recip_mul (machine_mode); 57 extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode); 58 59 extern tree default_stack_protect_guard (void); 60 extern tree default_external_stack_protect_fail (void); 61 extern tree default_hidden_stack_protect_fail (void); 62 63 extern machine_mode default_mode_for_suffix (char); 64 65 extern tree default_cxx_guard_type (void); 66 extern tree default_cxx_get_cookie_size (tree); 67 68 extern bool hook_pass_by_reference_must_pass_in_stack 69 (cumulative_args_t, const function_arg_info &); 70 extern bool hook_callee_copies_named 71 (cumulative_args_t ca, const function_arg_info &); 72 73 extern void default_print_operand (FILE *, rtx, int); 74 extern void default_print_operand_address (FILE *, machine_mode, rtx); 75 extern bool default_print_operand_punct_valid_p (unsigned char); 76 extern tree default_mangle_assembler_name (const char *); 77 78 extern machine_mode default_translate_mode_attribute (machine_mode); 79 extern bool default_scalar_mode_supported_p (scalar_mode); 80 extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode); 81 extern opt_scalar_float_mode default_floatn_mode (int, bool); 82 extern bool default_floatn_builtin_p (int); 83 extern bool targhook_words_big_endian (void); 84 extern bool targhook_float_words_big_endian (void); 85 extern bool default_float_exceptions_rounding_supported_p (void); 86 extern bool default_decimal_float_supported_p (void); 87 extern bool default_fixed_point_supported_p (void); 88 89 extern bool default_has_ifunc_p (void); 90 91 extern bool default_predict_doloop_p (class loop *); 92 extern const char * default_invalid_within_doloop (const rtx_insn *); 93 94 extern tree default_builtin_vectorized_function (unsigned int, tree, tree); 95 extern tree default_builtin_md_vectorized_function (tree, tree, tree); 96 97 extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int); 98 99 extern tree default_builtin_reciprocal (tree); 100 101 extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode); 102 extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT); 103 extern HOST_WIDE_INT constant_alignment_word_strings (const_tree, 104 HOST_WIDE_INT); 105 extern HOST_WIDE_INT default_vector_alignment (const_tree); 106 107 extern poly_uint64 default_preferred_vector_alignment (const_tree); 108 extern bool default_builtin_vector_alignment_reachable (const_tree, bool); 109 extern bool 110 default_builtin_support_vector_misalignment (machine_mode mode, 111 const_tree, 112 int, bool); 113 extern machine_mode default_preferred_simd_mode (scalar_mode mode); 114 extern machine_mode default_split_reduction (machine_mode); 115 extern unsigned int default_autovectorize_vector_modes (vector_modes *, bool); 116 extern opt_machine_mode default_vectorize_related_mode (machine_mode, 117 scalar_mode, 118 poly_uint64); 119 extern opt_machine_mode default_get_mask_mode (machine_mode); 120 extern bool default_empty_mask_is_expensive (unsigned); 121 extern void *default_init_cost (class loop *); 122 extern unsigned default_add_stmt_cost (void *, int, enum vect_cost_for_stmt, 123 class _stmt_vec_info *, int, 124 enum vect_cost_model_location); 125 extern void default_finish_cost (void *, unsigned *, unsigned *, unsigned *); 126 extern void default_destroy_cost_data (void *); 127 128 /* OpenACC hooks. */ 129 extern bool default_goacc_validate_dims (tree, int [], int, unsigned); 130 extern int default_goacc_dim_limit (int); 131 extern bool default_goacc_fork_join (gcall *, const int [], bool); 132 extern void default_goacc_reduction (gcall *); 133 134 /* These are here, and not in hooks.[ch], because not all users of 135 hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */ 136 137 extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t); 138 extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t); 139 140 extern bool hook_bool_CUMULATIVE_ARGS_arg_info_false 141 (cumulative_args_t, const function_arg_info &); 142 extern bool hook_bool_CUMULATIVE_ARGS_arg_info_true 143 (cumulative_args_t, const function_arg_info &); 144 extern int hook_int_CUMULATIVE_ARGS_arg_info_0 145 (cumulative_args_t, const function_arg_info &); 146 extern void hook_void_CUMULATIVE_ARGS_tree 147 (cumulative_args_t, tree); 148 extern const char *hook_invalid_arg_for_unprototyped_fn 149 (const_tree, const_tree, const_tree); 150 extern void default_function_arg_advance 151 (cumulative_args_t, const function_arg_info &); 152 extern HOST_WIDE_INT default_function_arg_offset (machine_mode, const_tree); 153 extern pad_direction default_function_arg_padding (machine_mode, const_tree); 154 extern rtx default_function_arg (cumulative_args_t, const function_arg_info &); 155 extern rtx default_function_incoming_arg (cumulative_args_t, 156 const function_arg_info &); 157 extern unsigned int default_function_arg_boundary (machine_mode, 158 const_tree); 159 extern unsigned int default_function_arg_round_boundary (machine_mode, 160 const_tree); 161 extern bool hook_bool_const_rtx_commutative_p (const_rtx, int); 162 extern rtx default_function_value (const_tree, const_tree, bool); 163 extern rtx default_libcall_value (machine_mode, const_rtx); 164 extern bool default_function_value_regno_p (const unsigned int); 165 extern rtx default_internal_arg_pointer (void); 166 extern rtx default_static_chain (const_tree, bool); 167 extern void default_trampoline_init (rtx, tree, rtx); 168 extern poly_int64 default_return_pops_args (tree, tree, poly_int64); 169 extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t, 170 reg_class_t); 171 extern bool default_lra_p (void); 172 extern int default_register_priority (int); 173 extern bool default_register_usage_leveling_p (void); 174 extern bool default_different_addr_displacement_p (void); 175 extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t, 176 machine_mode, 177 secondary_reload_info *); 178 extern machine_mode default_secondary_memory_needed_mode (machine_mode); 179 extern void default_target_option_override (void); 180 extern void hook_void_bitmap (bitmap); 181 extern int default_reloc_rw_mask (void); 182 extern bool default_generate_pic_addr_diff_vec (void); 183 extern tree default_mangle_decl_assembler_name (tree, tree); 184 extern tree default_emutls_var_fields (tree, tree *); 185 extern tree default_emutls_var_init (tree, tree, tree); 186 extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode); 187 extern bool default_hard_regno_scratch_ok (unsigned int); 188 extern bool default_mode_dependent_address_p (const_rtx, addr_space_t); 189 extern bool default_target_option_valid_attribute_p (tree, tree, tree, int); 190 extern bool default_target_option_pragma_parse (tree, tree); 191 extern bool default_target_can_inline_p (tree, tree); 192 extern bool default_valid_pointer_mode (scalar_int_mode); 193 extern bool default_ref_may_alias_errno (class ao_ref *); 194 extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t); 195 extern scalar_int_mode default_addr_space_address_mode (addr_space_t); 196 extern bool default_addr_space_valid_pointer_mode (scalar_int_mode, 197 addr_space_t); 198 extern bool default_addr_space_legitimate_address_p (machine_mode, rtx, 199 bool, addr_space_t); 200 extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode, 201 addr_space_t); 202 extern bool default_addr_space_subset_p (addr_space_t, addr_space_t); 203 extern bool default_addr_space_zero_address_valid (addr_space_t); 204 extern int default_addr_space_debug (addr_space_t); 205 extern void default_addr_space_diagnose_usage (addr_space_t, location_t); 206 extern rtx default_addr_space_convert (rtx, tree, tree); 207 extern unsigned int default_case_values_threshold (void); 208 extern bool default_have_conditional_execution (void); 209 210 extern bool default_libc_has_function (enum function_class); 211 extern bool default_libc_has_fast_function (int fcode); 212 extern bool no_c99_libc_has_function (enum function_class); 213 extern bool gnu_libc_has_function (enum function_class); 214 215 extern tree default_builtin_tm_load_store (tree); 216 217 extern int default_memory_move_cost (machine_mode, reg_class_t, bool); 218 extern int default_register_move_cost (machine_mode, reg_class_t, 219 reg_class_t); 220 extern bool default_slow_unaligned_access (machine_mode, unsigned int); 221 extern HOST_WIDE_INT default_estimated_poly_value (poly_int64); 222 223 extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT, 224 unsigned int, 225 enum by_pieces_operation, 226 bool); 227 extern int default_compare_by_pieces_branch_ratio (machine_mode); 228 229 extern void default_print_patchable_function_entry (FILE *, 230 unsigned HOST_WIDE_INT, 231 bool); 232 extern bool default_profile_before_prologue (void); 233 extern reg_class_t default_preferred_reload_class (rtx, reg_class_t); 234 extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t); 235 extern reg_class_t default_preferred_rename_class (reg_class_t rclass); 236 extern bool default_class_likely_spilled_p (reg_class_t); 237 extern unsigned char default_class_max_nregs (reg_class_t, machine_mode); 238 239 extern enum unwind_info_type default_debug_unwind_info (void); 240 241 extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool); 242 243 extern section * default_function_section(tree decl, enum node_frequency freq, 244 bool startup, bool exit); 245 extern unsigned int default_dwarf_poly_indeterminate_value (unsigned int, 246 unsigned int *, 247 int *); 248 extern machine_mode default_dwarf_frame_reg_mode (int); 249 extern fixed_size_mode default_get_reg_raw_mode (int); 250 extern bool default_keep_leaf_when_profiled (); 251 252 extern void *default_get_pch_validity (size_t *); 253 extern const char *default_pch_valid_p (const void *, size_t); 254 255 extern void default_asm_output_ident_directive (const char*); 256 257 extern scalar_int_mode default_cstore_mode (enum insn_code); 258 extern bool default_member_type_forces_blk (const_tree, machine_mode); 259 extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *); 260 extern tree build_va_arg_indirect_ref (tree); 261 extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *); 262 extern bool can_use_doloop_if_innermost (const widest_int &, 263 const widest_int &, 264 unsigned int, bool); 265 266 extern rtx default_load_bounds_for_arg (rtx, rtx, rtx); 267 extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx); 268 extern rtx default_load_returned_bounds (rtx); 269 extern void default_store_returned_bounds (rtx,rtx); 270 extern bool default_optab_supported_p (int, machine_mode, machine_mode, 271 optimization_type); 272 extern unsigned int default_max_noce_ifcvt_seq_cost (edge); 273 extern bool default_noce_conversion_profitable_p (rtx_insn *, 274 struct noce_if_info *); 275 extern unsigned int default_min_arithmetic_precision (void); 276 277 extern enum flt_eval_method 278 default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED); 279 extern HOST_WIDE_INT default_stack_clash_protection_alloca_probe_range (void); 280 extern void default_select_early_remat_modes (sbitmap); 281 extern tree default_preferred_else_value (unsigned, tree, unsigned, tree *); 282 283 extern bool default_have_speculation_safe_value (bool); 284 extern bool speculation_safe_value_not_needed (bool); 285 extern rtx default_speculation_safe_value (machine_mode, rtx, rtx, rtx); 286 287 #endif /* GCC_TARGHOOKS_H */ 288