1/* Default target hook functions.
2 Copyright (C) 2003-2017 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);
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 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, machine_mode, tree, int *, int);
44extern rtx default_builtin_setjmp_frame_value (void);
45extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
46
47extern scalar_int_mode default_eh_return_filter_mode (void);
48extern scalar_int_mode default_libgcc_cmp_return_mode (void);
49extern scalar_int_mode default_libgcc_shift_count_mode (void);
50extern scalar_int_mode default_unwind_word_mode (void);
51extern unsigned HOST_WIDE_INT default_shift_truncation_mask
52 (machine_mode);
53extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
54extern int default_mode_rep_extended (scalar_int_mode, scalar_int_mode);
55
56extern tree default_stack_protect_guard (void);
57extern tree default_external_stack_protect_fail (void);
58extern tree default_hidden_stack_protect_fail (void);
59
60extern machine_mode default_mode_for_suffix (char);
61
62extern tree default_cxx_guard_type (void);
63extern tree default_cxx_get_cookie_size (tree);
64
65extern bool hook_pass_by_reference_must_pass_in_stack
66 (cumulative_args_t, machine_mode mode, const_tree, bool);
67extern bool hook_callee_copies_named
68 (cumulative_args_t ca, machine_mode, const_tree, bool);
69
70extern void default_print_operand (FILE *, rtx, int);
71extern void default_print_operand_address (FILE *, machine_mode, rtx);
72extern bool default_print_operand_punct_valid_p (unsigned char);
73extern tree default_mangle_assembler_name (const char *);
74
75extern bool default_scalar_mode_supported_p (scalar_mode);
76extern bool default_libgcc_floating_mode_supported_p (scalar_float_mode);
77extern opt_scalar_float_mode default_floatn_mode (int, bool);
78extern bool default_floatn_builtin_p (int);
79extern bool targhook_words_big_endian (void);
80extern bool targhook_float_words_big_endian (void);
81extern bool default_float_exceptions_rounding_supported_p (void);
82extern bool default_decimal_float_supported_p (void);
83extern bool default_fixed_point_supported_p (void);
84
85extern bool default_has_ifunc_p (void);
86
87extern const char * default_invalid_within_doloop (const rtx_insn *);
88
89extern tree default_builtin_vectorized_function (unsigned int, tree, tree);
90extern tree default_builtin_md_vectorized_function (tree, tree, tree);
91
92extern tree default_builtin_vectorized_conversion (unsigned int, tree, tree);
93
94extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
95
96extern tree default_builtin_reciprocal (tree);
97
98extern HOST_WIDE_INT default_static_rtx_alignment (machine_mode);
99extern HOST_WIDE_INT default_constant_alignment (const_tree, HOST_WIDE_INT);
100extern HOST_WIDE_INT constant_alignment_word_strings (const_tree,
101 HOST_WIDE_INT);
102extern HOST_WIDE_INT default_vector_alignment (const_tree);
103
104extern HOST_WIDE_INT default_preferred_vector_alignment (const_tree);
105extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
106extern bool
107default_builtin_support_vector_misalignment (machine_mode mode,
108 const_tree,
109 int, bool);
110extern machine_mode default_preferred_simd_mode (scalar_mode mode);
111extern unsigned int default_autovectorize_vector_sizes (void);
112extern opt_machine_mode default_get_mask_mode (unsigned, unsigned);
113extern void *default_init_cost (struct loop *);
114extern unsigned default_add_stmt_cost (void *, int, enum vect_cost_for_stmt,
115 struct _stmt_vec_info *, int,
116 enum vect_cost_model_location);
117extern void default_finish_cost (void *, unsigned *, unsigned *, unsigned *);
118extern void default_destroy_cost_data (void *);
119
120/* OpenACC hooks. */
121extern bool default_goacc_validate_dims (tree, int [], int);
122extern int default_goacc_dim_limit (int);
123extern bool default_goacc_fork_join (gcall *, const int [], bool);
124extern void default_goacc_reduction (gcall *);
125
126/* These are here, and not in hooks.[ch], because not all users of
127 hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */
128
129extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
130extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
131
132extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
133 (cumulative_args_t, machine_mode, const_tree, bool);
134extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
135 (cumulative_args_t, machine_mode, const_tree, bool);
136extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
137 (cumulative_args_t, machine_mode, tree, bool);
138extern void hook_void_CUMULATIVE_ARGS_tree
139 (cumulative_args_t, tree);
140extern const char *hook_invalid_arg_for_unprototyped_fn
141 (const_tree, const_tree, const_tree);
142extern void default_function_arg_advance
143 (cumulative_args_t, machine_mode, const_tree, bool);
144extern HOST_WIDE_INT default_function_arg_offset (machine_mode, const_tree);
145extern pad_direction default_function_arg_padding (machine_mode, const_tree);
146extern rtx default_function_arg
147 (cumulative_args_t, machine_mode, const_tree, bool);
148extern rtx default_function_incoming_arg
149 (cumulative_args_t, machine_mode, const_tree, bool);
150extern unsigned int default_function_arg_boundary (machine_mode,
151 const_tree);
152extern unsigned int default_function_arg_round_boundary (machine_mode,
153 const_tree);
154extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
155extern rtx default_function_value (const_tree, const_tree, bool);
156extern rtx default_libcall_value (machine_mode, const_rtx);
157extern bool default_function_value_regno_p (const unsigned int);
158extern rtx default_internal_arg_pointer (void);
159extern rtx default_static_chain (const_tree, bool);
160extern void default_trampoline_init (rtx, tree, rtx);
161extern int default_return_pops_args (tree, tree, int);
162extern reg_class_t default_branch_target_register_class (void);
163extern reg_class_t default_ira_change_pseudo_allocno_class (int, reg_class_t,
164 reg_class_t);
165extern bool default_lra_p (void);
166extern int default_register_priority (int);
167extern bool default_register_usage_leveling_p (void);
168extern bool default_different_addr_displacement_p (void);
169extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
170 machine_mode,
171 secondary_reload_info *);
172extern machine_mode default_secondary_memory_needed_mode (machine_mode);
173extern void default_target_option_override (void);
174extern void hook_void_bitmap (bitmap);
175extern int default_reloc_rw_mask (void);
176extern tree default_mangle_decl_assembler_name (tree, tree);
177extern tree default_emutls_var_fields (tree, tree *);
178extern tree default_emutls_var_init (tree, tree, tree);
179extern unsigned int default_hard_regno_nregs (unsigned int, machine_mode);
180extern bool default_hard_regno_scratch_ok (unsigned int);
181extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
182extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
183extern bool default_target_option_pragma_parse (tree, tree);
184extern bool default_target_can_inline_p (tree, tree);
185extern bool default_valid_pointer_mode (scalar_int_mode);
186extern bool default_ref_may_alias_errno (struct ao_ref *);
187extern scalar_int_mode default_addr_space_pointer_mode (addr_space_t);
188extern scalar_int_mode default_addr_space_address_mode (addr_space_t);
189extern bool default_addr_space_valid_pointer_mode (scalar_int_mode,
190 addr_space_t);
191extern bool default_addr_space_legitimate_address_p (machine_mode, rtx,
192 bool, addr_space_t);
193extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
194 addr_space_t);
195extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
196extern bool default_addr_space_zero_address_valid (addr_space_t);
197extern int default_addr_space_debug (addr_space_t);
198extern void default_addr_space_diagnose_usage (addr_space_t, location_t);
199extern rtx default_addr_space_convert (rtx, tree, tree);
200extern unsigned int default_case_values_threshold (void);
201extern bool default_have_conditional_execution (void);
202
203extern bool default_libc_has_function (enum function_class);
204extern bool no_c99_libc_has_function (enum function_class);
205extern bool gnu_libc_has_function (enum function_class);
206
207extern tree default_builtin_tm_load_store (tree);
208
209extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
210extern int default_register_move_cost (machine_mode, reg_class_t,
211 reg_class_t);
212extern bool default_slow_unaligned_access (machine_mode, unsigned int);
213
214extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
215 unsigned int,
216 enum by_pieces_operation,
217 bool);
218extern int default_compare_by_pieces_branch_ratio (machine_mode);
219
220extern void default_print_patchable_function_entry (FILE *,
221 unsigned HOST_WIDE_INT,
222 bool);
223extern bool default_profile_before_prologue (void);
224extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
225extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
226extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
227extern bool default_class_likely_spilled_p (reg_class_t);
228extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
229
230extern enum unwind_info_type default_debug_unwind_info (void);
231
232extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
233
234extern int default_label_align_after_barrier_max_skip (rtx_insn *);
235extern int default_loop_align_max_skip (rtx_insn *);
236extern int default_label_align_max_skip (rtx_insn *);
237extern int default_jump_align_max_skip (rtx_insn *);
238extern section * default_function_section(tree decl, enum node_frequency freq,
239 bool startup, bool exit);
240extern machine_mode default_dwarf_frame_reg_mode (int);
241extern fixed_size_mode default_get_reg_raw_mode (int);
242extern bool default_keep_leaf_when_profiled ();
243
244extern void *default_get_pch_validity (size_t *);
245extern const char *default_pch_valid_p (const void *, size_t);
246
247extern void default_asm_output_ident_directive (const char*);
248
249extern scalar_int_mode default_cstore_mode (enum insn_code);
250extern bool default_member_type_forces_blk (const_tree, machine_mode);
251extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
252extern tree build_va_arg_indirect_ref (tree);
253extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
254extern bool can_use_doloop_if_innermost (const widest_int &,
255 const widest_int &,
256 unsigned int, bool);
257
258extern rtx default_load_bounds_for_arg (rtx, rtx, rtx);
259extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx);
260extern rtx default_load_returned_bounds (rtx);
261extern void default_store_returned_bounds (rtx,rtx);
262extern tree default_chkp_bound_type (void);
263extern machine_mode default_chkp_bound_mode (void);
264extern tree default_builtin_chkp_function (unsigned int);
265extern rtx default_chkp_function_value_bounds (const_tree, const_tree, bool);
266extern tree default_chkp_make_bounds_constant (HOST_WIDE_INT lb, HOST_WIDE_INT ub);
267extern int default_chkp_initialize_bounds (tree var, tree lb, tree ub,
268 tree *stmts);
269extern void default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED,
270 machine_mode mode ATTRIBUTE_UNUSED,
271 tree type ATTRIBUTE_UNUSED,
272 int *pretend_arg_size ATTRIBUTE_UNUSED,
273 int second_time ATTRIBUTE_UNUSED);
274extern bool default_optab_supported_p (int, machine_mode, machine_mode,
275 optimization_type);
276extern unsigned int default_max_noce_ifcvt_seq_cost (edge);
277extern bool default_noce_conversion_profitable_p (rtx_insn *,
278 struct noce_if_info *);
279extern unsigned int default_min_arithmetic_precision (void);
280
281extern enum flt_eval_method
282default_excess_precision (enum excess_precision_type ATTRIBUTE_UNUSED);
283extern bool default_stack_clash_protection_final_dynamic_probe (rtx);
284
285#endif /* GCC_TARGHOOKS_H */
286