1 /* Default target hook functions.
2 Copyright (C) 2003-2023 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 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,
44 const function_arg_info &,
45 int *, int);
46 extern rtx default_builtin_setjmp_frame_value (void);
47 extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
48
49 extern scalar_int_mode default_eh_return_filter_mode (void);
50 extern scalar_int_mode default_libgcc_cmp_return_mode (void);
51 extern scalar_int_mode default_libgcc_shift_count_mode (void);
52 extern scalar_int_mode default_unwind_word_mode (void);
53 extern unsigned HOST_WIDE_INT default_shift_truncation_mask
54 (machine_mode);
55 extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
56 extern bool default_preferred_div_as_shifts_over_mult
57 (const_tree);
58 extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode);
59
60 extern tree default_stack_protect_guard (void);
61 extern tree default_external_stack_protect_fail (void);
62 extern tree default_hidden_stack_protect_fail (void);
63
64 extern machine_mode default_mode_for_suffix (char);
65
66 extern tree default_cxx_guard_type (void);
67 extern tree default_cxx_get_cookie_size (tree);
68
69 extern bool hook_pass_by_reference_must_pass_in_stack
70 (cumulative_args_t, const function_arg_info &);
71 extern bool hook_callee_copies_named
72 (cumulative_args_t ca, const function_arg_info &);
73
74 extern void default_print_operand (FILE *, rtx, int);
75 extern void default_print_operand_address (FILE *, machine_mode, rtx);
76 extern bool default_print_operand_punct_valid_p (unsigned char);
77 extern tree default_mangle_assembler_name (const char *);
78
79 extern machine_mode default_translate_mode_attribute (machine_mode);
80 extern bool default_scalar_mode_supported_p (scalar_mode);
81 extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
82 extern opt_scalar_float_mode default_floatn_mode (int, bool);
83 extern bool default_floatn_builtin_p (int);
84 extern bool targhook_words_big_endian (void);
85 extern bool targhook_float_words_big_endian (void);
86 extern bool default_float_exceptions_rounding_supported_p (void);
87 extern bool default_decimal_float_supported_p (void);
88 extern bool default_fixed_point_supported_p (void);
89
90 extern bool default_has_ifunc_p (void);
91
92 extern bool default_predict_doloop_p (class loop *);
93 extern machine_mode default_preferred_doloop_mode (machine_mode);
94 extern const char * default_invalid_within_doloop (const rtx_insn *);
95
96 extern tree default_builtin_vectorized_function (unsigned int, tree, tree);
97 extern tree default_builtin_md_vectorized_function (tree, tree, tree);
98
99 extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
100
101 extern tree default_builtin_reciprocal (tree);
102
103 extern void default_emit_support_tinfos (emit_support_tinfos_callback);
104
105 extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode);
106 extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT);
107 extern HOST_WIDE_INT constant_alignment_word_strings (const_tree,
108 HOST_WIDE_INT);
109 extern HOST_WIDE_INT default_vector_alignment (const_tree);
110
111 extern poly_uint64 default_preferred_vector_alignment (const_tree);
112 extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
113 extern bool
114 default_builtin_support_vector_misalignment (machine_mode mode,
115 const_tree,
116 int, bool);
117 extern machine_mode default_preferred_simd_mode (scalar_mode mode);
118 extern machine_mode default_split_reduction (machine_mode);
119 extern unsigned int default_autovectorize_vector_modes (vector_modes *, bool);
120 extern opt_machine_mode default_vectorize_related_mode (machine_mode,
121 scalar_mode,
122 poly_uint64);
123 extern opt_machine_mode default_get_mask_mode (machine_mode);
124 extern bool default_empty_mask_is_expensive (unsigned);
125 extern vector_costs *default_vectorize_create_costs (vec_info *, bool);
126
127 /* OpenACC hooks. */
128 extern bool default_goacc_validate_dims (tree, int [], int, unsigned);
129 extern int default_goacc_dim_limit (int);
130 extern bool default_goacc_fork_join (gcall *, const int [], bool);
131 extern void default_goacc_reduction (gcall *);
132
133 /* These are here, and not in hooks.[ch], because not all users of
134 hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */
135
136 extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
137 extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
138
139 extern bool hook_bool_CUMULATIVE_ARGS_arg_info_false
140 (cumulative_args_t, const function_arg_info &);
141 extern bool hook_bool_CUMULATIVE_ARGS_arg_info_true
142 (cumulative_args_t, const function_arg_info &);
143 extern int hook_int_CUMULATIVE_ARGS_arg_info_0
144 (cumulative_args_t, const function_arg_info &);
145 extern void hook_void_CUMULATIVE_ARGS_tree
146 (cumulative_args_t, tree);
147 extern const char *hook_invalid_arg_for_unprototyped_fn
148 (const_tree, const_tree, const_tree);
149 extern void default_function_arg_advance
150 (cumulative_args_t, const function_arg_info &);
151 extern bool default_push_argument (unsigned int);
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 HARD_REG_SET default_zero_call_used_regs (HARD_REG_SET);
164 extern rtx default_libcall_value (machine_mode, const_rtx);
165 extern bool default_function_value_regno_p (const unsigned int);
166 extern rtx default_internal_arg_pointer (void);
167 extern rtx default_static_chain (const_tree, bool);
168 extern void default_trampoline_init (rtx, tree, rtx);
169 extern void default_emit_call_builtin___clear_cache (rtx, rtx);
170 extern poly_int64 default_return_pops_args (tree, tree, poly_int64);
171 extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t,
172 reg_class_t);
173 extern bool default_lra_p (void);
174 extern int default_register_priority (int);
175 extern bool default_register_usage_leveling_p (void);
176 extern bool default_different_addr_displacement_p (void);
177 extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
178 machine_mode,
179 secondary_reload_info *);
180 extern machine_mode default_secondary_memory_needed_mode (machine_mode);
181 extern void default_target_option_override (void);
182 extern void hook_void_bitmap (bitmap);
183 extern int default_reloc_rw_mask (void);
184 extern bool default_generate_pic_addr_diff_vec (void);
185 extern void default_asm_out_constructor (rtx, int);
186 extern void default_asm_out_destructor (rtx, int);
187 extern tree default_mangle_decl_assembler_name (tree, tree);
188 extern tree default_emutls_var_fields (tree, tree *);
189 extern tree default_emutls_var_init (tree, tree, tree);
190 extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode);
191 extern bool default_hard_regno_scratch_ok (unsigned int);
192 extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
193 extern bool default_new_address_profitable_p (rtx, rtx_insn *, rtx);
194 extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
195 extern bool default_target_option_pragma_parse (tree, tree);
196 extern bool default_target_can_inline_p (tree, tree);
197 extern bool default_update_ipa_fn_target_info (unsigned int &, const gimple *);
198 extern bool default_need_ipa_fn_target_info (const_tree, unsigned int &);
199 extern bool default_valid_pointer_mode (scalar_int_mode);
200 extern bool default_ref_may_alias_errno (class ao_ref *);
201 extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t);
202 extern scalar_int_mode default_addr_space_address_mode (addr_space_t);
203 extern bool default_addr_space_valid_pointer_mode (scalar_int_mode,
204 addr_space_t);
205 extern bool default_addr_space_legitimate_address_p (machine_mode, rtx,
206 bool, addr_space_t);
207 extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
208 addr_space_t);
209 extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
210 extern bool default_addr_space_zero_address_valid (addr_space_t);
211 extern int default_addr_space_debug (addr_space_t);
212 extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
213 extern rtx default_addr_space_convert (rtx, tree, tree);
214 extern unsigned int default_case_values_threshold (void);
215 extern bool default_have_conditional_execution (void);
216
217 extern bool default_libc_has_function (enum function_class, tree);
218 extern bool default_libc_has_fast_function (int fcode);
219 extern bool no_c99_libc_has_function (enum function_class, tree);
220 extern bool gnu_libc_has_function (enum function_class, tree);
221 extern bool bsd_libc_has_function (enum function_class, tree);
222
223 extern tree default_builtin_tm_load_store (tree);
224
225 extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
226 extern int default_register_move_cost (machine_mode, reg_class_t,
227 reg_class_t);
228 extern bool default_slow_unaligned_access (machine_mode, unsigned int);
229 extern HOST_WIDE_INT default_estimated_poly_value (poly_int64,
230 poly_value_estimate_kind);
231
232 extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
233 unsigned int,
234 enum by_pieces_operation,
235 bool);
236 extern int default_compare_by_pieces_branch_ratio (machine_mode);
237
238 extern void default_print_patchable_function_entry (FILE *,
239 unsigned HOST_WIDE_INT,
240 bool);
241 extern bool default_profile_before_prologue (void);
242 extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
243 extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
244 extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
245 extern bool default_class_likely_spilled_p (reg_class_t);
246 extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
247
248 extern enum unwind_info_type default_debug_unwind_info (void);
249
250 extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
251
252 extern section * default_function_section(tree decl, enum node_frequency freq,
253 bool startup, bool exit);
254 extern unsigned int default_dwarf_poly_indeterminate_value (unsigned int,
255 unsigned int *,
256 int *);
257 extern machine_mode default_dwarf_frame_reg_mode (int);
258 extern fixed_size_mode default_get_reg_raw_mode (int);
259 extern bool default_keep_leaf_when_profiled ();
260
261 extern void *default_get_pch_validity (size_t *);
262 extern const char *default_pch_valid_p (const void *, size_t);
263
264 extern void default_asm_output_ident_directive (const char*);
265
266 extern scalar_int_mode default_cstore_mode (enum insn_code);
267 extern bool default_member_type_forces_blk (const_tree, machine_mode);
268 extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
269 extern tree build_va_arg_indirect_ref (tree);
270 extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
271 extern bool can_use_doloop_if_innermost (const widest_int &,
272 const widest_int &,
273 unsigned int, bool);
274
275 extern bool default_optab_supported_p (int, machine_mode, machine_mode,
276 optimization_type);
277 extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
278 extern bool default_noce_conversion_profitable_p (rtx_insn *,
279 struct noce_if_info *);
280 extern unsigned int default_min_arithmetic_precision (void);
281
282 extern enum flt_eval_method
283 default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED);
284 extern HOST_WIDE_INT default_stack_clash_protection_alloca_probe_range (void);
285 extern void default_select_early_remat_modes (sbitmap);
286 extern tree default_preferred_else_value (unsigned, tree, unsigned, tree *);
287
288 extern bool default_have_speculation_safe_value (bool);
289 extern bool speculation_safe_value_not_needed (bool);
290 extern rtx default_speculation_safe_value (machine_mode, rtx, rtx, rtx);
291
292 extern bool default_memtag_can_tag_addresses ();
293 extern uint8_t default_memtag_tag_size ();
294 extern uint8_t default_memtag_granule_size ();
295 extern rtx default_memtag_insert_random_tag (rtx, rtx);
296 extern rtx default_memtag_add_tag (rtx, poly_int64, uint8_t);
297 extern rtx default_memtag_set_tag (rtx, rtx, rtx);
298 extern rtx default_memtag_extract_tag (rtx, rtx);
299 extern rtx default_memtag_untagged_pointer (rtx, rtx);
300
301 extern HOST_WIDE_INT default_gcov_type_size (void);
302
303 #endif /* GCC_TARGHOOKS_H */