1/* Default target hook functions.
2 Copyright (C) 2003-2023 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along 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
23extern bool default_legitimate_address_p (machine_mode, rtx, bool, code_helper);
24
25extern void default_external_libcall (rtx);
26extern rtx default_legitimize_address (rtx, rtx, machine_mode);
27extern bool default_legitimize_address_displacement (rtx *, rtx *,
28 poly_int64, machine_mode);
29extern bool default_const_not_ok_for_debug_p (rtx);
30
31extern int default_unspec_may_trap_p (const_rtx, unsigned);
32extern machine_mode default_promote_function_mode (const_tree, machine_mode,
33 int *, const_tree, int);
34extern machine_mode default_promote_function_mode_always_promote
35 (const_tree, machine_mode, int *, const_tree, int);
36
37extern machine_mode default_cc_modes_compatible (machine_mode,
38 machine_mode);
39
40extern bool default_return_in_memory (const_tree, const_tree);
41
42extern rtx default_expand_builtin_saveregs (void);
43extern void default_setup_incoming_varargs (cumulative_args_t,
44 const function_arg_info &,
45 int *, int);
46extern rtx default_builtin_setjmp_frame_value (void);
47extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
48
49extern scalar_int_mode default_eh_return_filter_mode (void);
50extern scalar_int_mode default_libgcc_cmp_return_mode (void);
51extern scalar_int_mode default_libgcc_shift_count_mode (void);
52extern scalar_int_mode default_unwind_word_mode (void);
53extern unsigned HOST_WIDE_INT default_shift_truncation_mask
54 (machine_mode);
55extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
56extern bool default_preferred_div_as_shifts_over_mult
57 (const_tree);
58extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode);
59
60extern tree default_stack_protect_guard (void);
61extern tree default_external_stack_protect_fail (void);
62extern tree default_hidden_stack_protect_fail (void);
63
64extern machine_mode default_mode_for_suffix (char);
65
66extern tree default_cxx_guard_type (void);
67extern tree default_cxx_get_cookie_size (tree);
68
69extern bool hook_pass_by_reference_must_pass_in_stack
70 (cumulative_args_t, const function_arg_info &);
71extern bool hook_callee_copies_named
72 (cumulative_args_t ca, const function_arg_info &);
73
74extern void default_print_operand (FILE *, rtx, int);
75extern void default_print_operand_address (FILE *, machine_mode, rtx);
76extern bool default_print_operand_punct_valid_p (unsigned char);
77extern tree default_mangle_assembler_name (const char *);
78
79extern machine_mode default_translate_mode_attribute (machine_mode);
80extern bool default_scalar_mode_supported_p (scalar_mode);
81extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
82extern opt_scalar_float_mode default_floatn_mode (int, bool);
83extern bool default_floatn_builtin_p (int);
84extern bool targhook_words_big_endian (void);
85extern bool targhook_float_words_big_endian (void);
86extern bool default_float_exceptions_rounding_supported_p (void);
87extern bool default_decimal_float_supported_p (void);
88extern bool default_fixed_point_supported_p (void);
89
90extern bool default_has_ifunc_p (void);
91
92extern bool default_predict_doloop_p (class loop *);
93extern machine_mode default_preferred_doloop_mode (machine_mode);
94extern const char * default_invalid_within_doloop (const rtx_insn *);
95
96extern tree default_builtin_vectorized_function (unsigned int, tree, tree);
97extern tree default_builtin_md_vectorized_function (tree, tree, tree);
98
99extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
100
101extern tree default_builtin_reciprocal (tree);
102
103extern void default_emit_support_tinfos (emit_support_tinfos_callback);
104
105extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode);
106extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT);
107extern HOST_WIDE_INT constant_alignment_word_strings (const_tree,
108 HOST_WIDE_INT);
109extern HOST_WIDE_INT default_vector_alignment (const_tree);
110
111extern poly_uint64 default_preferred_vector_alignment (const_tree);
112extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
113extern bool
114default_builtin_support_vector_misalignment (machine_mode mode,
115 const_tree,
116 int, bool);
117extern machine_mode default_preferred_simd_mode (scalar_mode mode);
118extern machine_mode default_split_reduction (machine_mode);
119extern unsigned int default_autovectorize_vector_modes (vector_modes *, bool);
120extern opt_machine_mode default_vectorize_related_mode (machine_mode,
121 scalar_mode,
122 poly_uint64);
123extern opt_machine_mode default_get_mask_mode (machine_mode);
124extern bool default_empty_mask_is_expensive (unsigned);
125extern vector_costs *default_vectorize_create_costs (vec_info *, bool);
126
127/* OpenACC hooks. */
128extern bool default_goacc_validate_dims (tree, int [], int, unsigned);
129extern int default_goacc_dim_limit (int);
130extern bool default_goacc_fork_join (gcall *, const int [], bool);
131extern 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
136extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
137extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
138
139extern bool hook_bool_CUMULATIVE_ARGS_arg_info_false
140 (cumulative_args_t, const function_arg_info &);
141extern bool hook_bool_CUMULATIVE_ARGS_arg_info_true
142 (cumulative_args_t, const function_arg_info &);
143extern int hook_int_CUMULATIVE_ARGS_arg_info_0
144 (cumulative_args_t, const function_arg_info &);
145extern void hook_void_CUMULATIVE_ARGS_tree
146 (cumulative_args_t, tree);
147extern const char *hook_invalid_arg_for_unprototyped_fn
148 (const_tree, const_tree, const_tree);
149extern void default_function_arg_advance
150 (cumulative_args_t, const function_arg_info &);
151extern bool default_push_argument (unsigned int);
152extern HOST_WIDE_INT default_function_arg_offset (machine_mode, const_tree);
153extern pad_direction default_function_arg_padding (machine_mode, const_tree);
154extern rtx default_function_arg (cumulative_args_t, const function_arg_info &);
155extern rtx default_function_incoming_arg (cumulative_args_t,
156 const function_arg_info &);
157extern unsigned int default_function_arg_boundary (machine_mode,
158 const_tree);
159extern unsigned int default_function_arg_round_boundary (machine_mode,
160 const_tree);
161extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
162extern rtx default_function_value (const_tree, const_tree, bool);
163extern HARD_REG_SET default_zero_call_used_regs (HARD_REG_SET);
164extern rtx default_libcall_value (machine_mode, const_rtx);
165extern bool default_function_value_regno_p (const unsigned int);
166extern rtx default_internal_arg_pointer (void);
167extern rtx default_static_chain (const_tree, bool);
168extern void default_trampoline_init (rtx, tree, rtx);
169extern void default_emit_call_builtin___clear_cache (rtx, rtx);
170extern poly_int64 default_return_pops_args (tree, tree, poly_int64);
171extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t,
172 reg_class_t);
173extern bool default_lra_p (void);
174extern int default_register_priority (int);
175extern bool default_register_usage_leveling_p (void);
176extern bool default_different_addr_displacement_p (void);
177extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
178 machine_mode,
179 secondary_reload_info *);
180extern machine_mode default_secondary_memory_needed_mode (machine_mode);
181extern void default_target_option_override (void);
182extern void hook_void_bitmap (bitmap);
183extern int default_reloc_rw_mask (void);
184extern bool default_generate_pic_addr_diff_vec (void);
185extern void default_asm_out_constructor (rtx, int);
186extern void default_asm_out_destructor (rtx, int);
187extern tree default_mangle_decl_assembler_name (tree, tree);
188extern tree default_emutls_var_fields (tree, tree *);
189extern tree default_emutls_var_init (tree, tree, tree);
190extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode);
191extern bool default_hard_regno_scratch_ok (unsigned int);
192extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
193extern bool default_new_address_profitable_p (rtx, rtx_insn *, rtx);
194extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
195extern bool default_target_option_pragma_parse (tree, tree);
196extern bool default_target_can_inline_p (tree, tree);
197extern bool default_update_ipa_fn_target_info (unsigned int &, const gimple *);
198extern bool default_need_ipa_fn_target_info (const_tree, unsigned int &);
199extern bool default_valid_pointer_mode (scalar_int_mode);
200extern bool default_ref_may_alias_errno (class ao_ref *);
201extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t);
202extern scalar_int_mode default_addr_space_address_mode (addr_space_t);
203extern bool default_addr_space_valid_pointer_mode (scalar_int_mode,
204 addr_space_t);
205extern bool default_addr_space_legitimate_address_p (machine_mode, rtx, bool,
206 addr_space_t, code_helper);
207extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
208 addr_space_t);
209extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
210extern bool default_addr_space_zero_address_valid (addr_space_t);
211extern int default_addr_space_debug (addr_space_t);
212extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
213extern rtx default_addr_space_convert (rtx, tree, tree);
214extern unsigned int default_case_values_threshold (void);
215extern bool default_have_conditional_execution (void);
216
217extern bool default_libc_has_function (enum function_class, tree);
218extern bool default_libc_has_fast_function (int fcode);
219extern bool no_c99_libc_has_function (enum function_class, tree);
220extern bool gnu_libc_has_function (enum function_class, tree);
221extern bool bsd_libc_has_function (enum function_class, tree);
222extern unsigned default_libm_function_max_error (unsigned, machine_mode, bool);
223extern unsigned glibc_linux_libm_function_max_error (unsigned, machine_mode,
224 bool);
225
226extern tree default_builtin_tm_load_store (tree);
227
228extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
229extern int default_register_move_cost (machine_mode, reg_class_t,
230 reg_class_t);
231extern bool default_slow_unaligned_access (machine_mode, unsigned int);
232extern HOST_WIDE_INT default_estimated_poly_value (poly_int64,
233 poly_value_estimate_kind);
234
235extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
236 unsigned int,
237 enum by_pieces_operation,
238 bool);
239extern int default_compare_by_pieces_branch_ratio (machine_mode);
240
241extern void default_print_patchable_function_entry (FILE *,
242 unsigned HOST_WIDE_INT,
243 bool);
244extern bool default_profile_before_prologue (void);
245extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
246extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
247extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
248extern bool default_class_likely_spilled_p (reg_class_t);
249extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
250
251extern enum unwind_info_type default_debug_unwind_info (void);
252
253extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
254
255extern section * default_function_section(tree decl, enum node_frequency freq,
256 bool startup, bool exit);
257extern unsigned int default_dwarf_poly_indeterminate_value (unsigned int,
258 unsigned int *,
259 int *);
260extern machine_mode default_dwarf_frame_reg_mode (int);
261extern fixed_size_mode default_get_reg_raw_mode (int);
262extern bool default_keep_leaf_when_profiled ();
263
264extern void *default_get_pch_validity (size_t *);
265extern const char *default_pch_valid_p (const void *, size_t);
266
267extern void default_asm_output_ident_directive (const char*);
268
269extern scalar_int_mode default_cstore_mode (enum insn_code);
270extern bool default_member_type_forces_blk (const_tree, machine_mode);
271extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
272extern tree build_va_arg_indirect_ref (tree);
273extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
274extern bool can_use_doloop_if_innermost (const widest_int &,
275 const widest_int &,
276 unsigned int, bool);
277
278extern bool default_optab_supported_p (int, machine_mode, machine_mode,
279 optimization_type);
280extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
281extern bool default_noce_conversion_profitable_p (rtx_insn *,
282 struct noce_if_info *);
283extern unsigned int default_min_arithmetic_precision (void);
284
285extern enum flt_eval_method
286default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED);
287extern bool default_bitint_type_info (int, struct bitint_info *);
288extern HOST_WIDE_INT default_stack_clash_protection_alloca_probe_range (void);
289extern void default_select_early_remat_modes (sbitmap);
290extern tree default_preferred_else_value (unsigned, tree, unsigned, tree *);
291
292extern bool default_have_speculation_safe_value (bool);
293extern bool speculation_safe_value_not_needed (bool);
294extern rtx default_speculation_safe_value (machine_mode, rtx, rtx, rtx);
295
296extern bool default_memtag_can_tag_addresses ();
297extern uint8_t default_memtag_tag_size ();
298extern uint8_t default_memtag_granule_size ();
299extern rtx default_memtag_insert_random_tag (rtx, rtx);
300extern rtx default_memtag_add_tag (rtx, poly_int64, uint8_t);
301extern rtx default_memtag_set_tag (rtx, rtx, rtx);
302extern rtx default_memtag_extract_tag (rtx, rtx);
303extern rtx default_memtag_untagged_pointer (rtx, rtx);
304
305extern HOST_WIDE_INT default_gcov_type_size (void);
306
307#endif /* GCC_TARGHOOKS_H */
308

source code of gcc/targhooks.h