1/* Default target hook functions.
2   Copyright (C) 2003-2015 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);
29
30extern int default_unspec_may_trap_p (const_rtx, unsigned);
31extern machine_mode default_promote_function_mode (const_tree, machine_mode,
32							int *, const_tree, int);
33extern machine_mode default_promote_function_mode_always_promote
34			(const_tree, machine_mode, int *, const_tree, int);
35
36extern machine_mode default_cc_modes_compatible (machine_mode,
37						      machine_mode);
38
39extern bool default_return_in_memory (const_tree, const_tree);
40
41extern rtx default_expand_builtin_saveregs (void);
42extern void default_setup_incoming_varargs (cumulative_args_t, machine_mode, tree, int *, int);
43extern rtx default_builtin_setjmp_frame_value (void);
44extern bool default_pretend_outgoing_varargs_named (cumulative_args_t);
45
46extern machine_mode default_eh_return_filter_mode (void);
47extern machine_mode default_libgcc_cmp_return_mode (void);
48extern machine_mode default_libgcc_shift_count_mode (void);
49extern machine_mode default_unwind_word_mode (void);
50extern unsigned HOST_WIDE_INT default_shift_truncation_mask
51  (machine_mode);
52extern unsigned int default_min_divisions_for_recip_mul (machine_mode);
53extern int default_mode_rep_extended (machine_mode, machine_mode);
54
55extern tree default_stack_protect_guard (void);
56extern tree default_external_stack_protect_fail (void);
57extern tree default_hidden_stack_protect_fail (void);
58
59extern machine_mode default_mode_for_suffix (char);
60
61extern tree default_cxx_guard_type (void);
62extern tree default_cxx_get_cookie_size (tree);
63
64extern bool hook_pass_by_reference_must_pass_in_stack
65  (cumulative_args_t, machine_mode mode, const_tree, bool);
66extern bool hook_callee_copies_named
67  (cumulative_args_t ca, machine_mode, const_tree, bool);
68
69extern void default_print_operand (FILE *, rtx, int);
70extern void default_print_operand_address (FILE *, rtx);
71extern bool default_print_operand_punct_valid_p (unsigned char);
72extern tree default_mangle_assembler_name (const char *);
73
74extern bool default_scalar_mode_supported_p (machine_mode);
75extern bool default_libgcc_floating_mode_supported_p (machine_mode);
76extern bool targhook_words_big_endian (void);
77extern bool targhook_float_words_big_endian (void);
78extern bool default_float_exceptions_rounding_supported_p (void);
79extern bool default_decimal_float_supported_p (void);
80extern bool default_fixed_point_supported_p (void);
81
82extern bool default_has_ifunc_p (void);
83
84extern const char * default_invalid_within_doloop (const rtx_insn *);
85
86extern tree default_builtin_vectorized_function (tree, tree, tree);
87
88extern tree default_builtin_vectorized_conversion (unsigned int, tree, tree);
89
90extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
91
92extern tree default_builtin_reciprocal (unsigned int, bool, bool);
93
94extern HOST_WIDE_INT default_vector_alignment (const_tree);
95
96extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
97extern bool
98default_builtin_support_vector_misalignment (machine_mode mode,
99					     const_tree,
100					     int, bool);
101extern machine_mode default_preferred_simd_mode (machine_mode mode);
102extern unsigned int default_autovectorize_vector_sizes (void);
103extern void *default_init_cost (struct loop *);
104extern unsigned default_add_stmt_cost (void *, int, enum vect_cost_for_stmt,
105				       struct _stmt_vec_info *, int,
106				       enum vect_cost_model_location);
107extern void default_finish_cost (void *, unsigned *, unsigned *, unsigned *);
108extern void default_destroy_cost_data (void *);
109
110/* These are here, and not in hooks.[ch], because not all users of
111   hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS.  */
112
113extern bool hook_bool_CUMULATIVE_ARGS_false (cumulative_args_t);
114extern bool hook_bool_CUMULATIVE_ARGS_true (cumulative_args_t);
115
116extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
117  (cumulative_args_t, machine_mode, const_tree, bool);
118extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
119  (cumulative_args_t, machine_mode, const_tree, bool);
120extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
121  (cumulative_args_t, machine_mode, tree, bool);
122extern const char *hook_invalid_arg_for_unprototyped_fn
123  (const_tree, const_tree, const_tree);
124extern void default_function_arg_advance
125  (cumulative_args_t, machine_mode, const_tree, bool);
126extern rtx default_function_arg
127  (cumulative_args_t, machine_mode, const_tree, bool);
128extern rtx default_function_incoming_arg
129  (cumulative_args_t, machine_mode, const_tree, bool);
130extern unsigned int default_function_arg_boundary (machine_mode,
131						   const_tree);
132extern unsigned int default_function_arg_round_boundary (machine_mode,
133							 const_tree);
134extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
135extern rtx default_function_value (const_tree, const_tree, bool);
136extern rtx default_libcall_value (machine_mode, const_rtx);
137extern bool default_function_value_regno_p (const unsigned int);
138extern rtx default_internal_arg_pointer (void);
139extern rtx default_static_chain (const_tree, bool);
140extern void default_trampoline_init (rtx, tree, rtx);
141extern int default_return_pops_args (tree, tree, int);
142extern reg_class_t default_branch_target_register_class (void);
143extern bool default_lra_p (void);
144extern int default_register_priority (int);
145extern bool default_register_usage_leveling_p (void);
146extern bool default_different_addr_displacement_p (void);
147extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
148					     machine_mode,
149					     secondary_reload_info *);
150extern void default_target_option_override (void);
151extern void hook_void_bitmap (bitmap);
152extern int default_reloc_rw_mask (void);
153extern tree default_mangle_decl_assembler_name (tree, tree);
154extern tree default_emutls_var_fields (tree, tree *);
155extern tree default_emutls_var_init (tree, tree, tree);
156extern bool default_hard_regno_scratch_ok (unsigned int);
157extern bool default_mode_dependent_address_p (const_rtx, addr_space_t);
158extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
159extern bool default_target_option_pragma_parse (tree, tree);
160extern bool default_target_can_inline_p (tree, tree);
161extern bool default_valid_pointer_mode (machine_mode);
162extern bool default_ref_may_alias_errno (struct ao_ref *);
163extern machine_mode default_addr_space_pointer_mode (addr_space_t);
164extern machine_mode default_addr_space_address_mode (addr_space_t);
165extern bool default_addr_space_valid_pointer_mode (machine_mode,
166						   addr_space_t);
167extern bool default_addr_space_legitimate_address_p (machine_mode, rtx,
168						     bool, addr_space_t);
169extern rtx default_addr_space_legitimize_address (rtx, rtx, machine_mode,
170						  addr_space_t);
171extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
172extern rtx default_addr_space_convert (rtx, tree, tree);
173extern unsigned int default_case_values_threshold (void);
174extern bool default_have_conditional_execution (void);
175
176extern bool default_libc_has_function (enum function_class);
177extern bool no_c99_libc_has_function (enum function_class);
178extern bool gnu_libc_has_function (enum function_class);
179
180extern tree default_builtin_tm_load_store (tree);
181
182extern int default_memory_move_cost (machine_mode, reg_class_t, bool);
183extern int default_register_move_cost (machine_mode, reg_class_t,
184				       reg_class_t);
185
186extern bool default_use_by_pieces_infrastructure_p (unsigned HOST_WIDE_INT,
187						    unsigned int,
188						    enum by_pieces_operation,
189						    bool);
190
191extern bool default_profile_before_prologue (void);
192extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
193extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
194extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
195extern bool default_class_likely_spilled_p (reg_class_t);
196extern unsigned char default_class_max_nregs (reg_class_t, machine_mode);
197
198extern enum unwind_info_type default_debug_unwind_info (void);
199
200extern void default_canonicalize_comparison (int *, rtx *, rtx *, bool);
201
202extern int default_label_align_after_barrier_max_skip (rtx_insn *);
203extern int default_loop_align_max_skip (rtx_insn *);
204extern int default_label_align_max_skip (rtx_insn *);
205extern int default_jump_align_max_skip (rtx_insn *);
206extern section * default_function_section(tree decl, enum node_frequency freq,
207					  bool startup, bool exit);
208extern machine_mode default_dwarf_frame_reg_mode (int);
209extern machine_mode default_get_reg_raw_mode (int);
210extern bool default_keep_leaf_when_profiled ();
211
212extern void *default_get_pch_validity (size_t *);
213extern const char *default_pch_valid_p (const void *, size_t);
214
215extern void default_asm_output_ident_directive (const char*);
216
217extern machine_mode default_cstore_mode (enum insn_code);
218extern bool default_member_type_forces_blk (const_tree, machine_mode);
219extern void default_atomic_assign_expand_fenv (tree *, tree *, tree *);
220extern tree build_va_arg_indirect_ref (tree);
221extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
222extern bool can_use_doloop_if_innermost (const widest_int &,
223					 const widest_int &,
224					 unsigned int, bool);
225
226extern rtx default_load_bounds_for_arg (rtx, rtx, rtx);
227extern void default_store_bounds_for_arg (rtx, rtx, rtx, rtx);
228extern rtx default_load_returned_bounds (rtx);
229extern void default_store_returned_bounds (rtx,rtx);
230extern tree default_chkp_bound_type (void);
231extern enum machine_mode default_chkp_bound_mode (void);
232extern tree default_builtin_chkp_function (unsigned int);
233extern rtx default_chkp_function_value_bounds (const_tree, const_tree, bool);
234extern tree default_chkp_make_bounds_constant (HOST_WIDE_INT lb, HOST_WIDE_INT ub);
235extern int default_chkp_initialize_bounds (tree var, tree lb, tree ub,
236					   tree *stmts);
237extern void default_setup_incoming_vararg_bounds (cumulative_args_t ca ATTRIBUTE_UNUSED,
238						  enum machine_mode mode ATTRIBUTE_UNUSED,
239						  tree type ATTRIBUTE_UNUSED,
240						  int *pretend_arg_size ATTRIBUTE_UNUSED,
241						  int second_time ATTRIBUTE_UNUSED);
242#endif /* GCC_TARGHOOKS_H */
243