gcc/targhooks.h

   1 /* Default target hook functions.
   2    Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 extern bool default_legitimate_address_p (enum machine_mode, rtx, bool);
  22
  23 extern void default_external_libcall (rtx);
  24 extern rtx default_legitimize_address (rtx, rtx, enum machine_mode);
  25
  26 extern int default_unspec_may_trap_p (const_rtx, unsigned);
  27 extern enum machine_mode default_promote_function_mode (const_tree, enum machine_mode,
  28                                                         int *, const_tree, int);
  29 extern enum machine_mode default_promote_function_mode_always_promote
  30                         (const_tree, enum machine_mode, int *, const_tree, int);
  31
  32 extern enum machine_mode default_cc_modes_compatible (enum machine_mode,
  33                                                       enum machine_mode);
  34
  35 extern bool default_return_in_memory (const_tree, const_tree);
  36
  37 extern rtx default_expand_builtin_saveregs (void);
  38 extern void default_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode, tree, int *, int);
  39 extern rtx default_builtin_setjmp_frame_value (void);
  40 extern bool default_pretend_outgoing_varargs_named (CUMULATIVE_ARGS *);
  41
  42 extern enum machine_mode default_eh_return_filter_mode (void);
  43 extern enum machine_mode default_libgcc_cmp_return_mode (void);
  44 extern enum machine_mode default_libgcc_shift_count_mode (void);
  45 extern enum machine_mode default_unwind_word_mode (void);
  46 extern unsigned HOST_WIDE_INT default_shift_truncation_mask
  47   (enum machine_mode);
  48 extern unsigned int default_min_divisions_for_recip_mul (enum machine_mode);
  49 extern int default_mode_rep_extended (enum machine_mode, enum machine_mode);
  50
  51 extern tree default_stack_protect_guard (void);
  52 extern tree default_external_stack_protect_fail (void);
  53 extern tree default_hidden_stack_protect_fail (void);
  54
  55 extern enum machine_mode default_mode_for_suffix (char);
  56
  57 extern tree default_cxx_guard_type (void);
  58 extern tree default_cxx_get_cookie_size (tree);
  59
  60 extern bool hook_pass_by_reference_must_pass_in_stack
  61   (CUMULATIVE_ARGS *, enum machine_mode mode, const_tree, bool);
  62 extern bool hook_callee_copies_named
  63   (CUMULATIVE_ARGS *ca, enum machine_mode, const_tree, bool);
  64
  65 extern void default_print_operand (FILE *, rtx, int);
  66 extern void default_print_operand_address (FILE *, rtx);
  67 extern bool default_print_operand_punct_valid_p (unsigned char);
  68 extern bool default_asm_output_addr_const_extra (FILE *, rtx);
  69
  70 extern bool default_scalar_mode_supported_p (enum machine_mode);
  71 extern bool targhook_words_big_endian (void);
  72 extern bool targhook_float_words_big_endian (void);
  73 extern bool default_decimal_float_supported_p (void);
  74 extern bool default_fixed_point_supported_p (void);
  75
  76 extern const char * default_invalid_within_doloop (const_rtx);
  77
  78 extern tree default_builtin_vectorized_function (tree, tree, tree);
  79
  80 extern tree default_builtin_vectorized_conversion (unsigned int, tree, tree);
  81
  82 extern int default_builtin_vectorization_cost (enum vect_cost_for_stmt, tree, int);
  83
  84 extern tree default_builtin_reciprocal (unsigned int, bool, bool);
  85
  86 extern bool default_builtin_vector_alignment_reachable (const_tree, bool);
  87 extern bool
  88 default_builtin_support_vector_misalignment (enum machine_mode mode,
  89                                              const_tree,
  90                                              int, bool);
  91 extern enum machine_mode default_preferred_simd_mode (enum machine_mode mode);
  92 extern unsigned int default_autovectorize_vector_sizes (void);
  93
  94 /* These are here, and not in hooks.[ch], because not all users of
  95    hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS.  */
  96
  97 extern bool hook_bool_CUMULATIVE_ARGS_false (CUMULATIVE_ARGS *);
  98 extern bool hook_bool_CUMULATIVE_ARGS_true (CUMULATIVE_ARGS *);
  99
 100 extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
 101   (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
 102 extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
 103   (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
 104 extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
 105   (CUMULATIVE_ARGS *, enum machine_mode, tree, bool);
 106 extern const char *hook_invalid_arg_for_unprototyped_fn
 107   (const_tree, const_tree, const_tree);
 108 extern void default_function_arg_advance
 109   (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
 110 extern rtx default_function_arg
 111   (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
 112 extern rtx default_function_incoming_arg
 113   (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
 114 extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
 115 extern rtx default_function_value (const_tree, const_tree, bool);
 116 extern rtx default_libcall_value (enum machine_mode, const_rtx);
 117 extern bool default_function_value_regno_p (const unsigned int);
 118 extern rtx default_internal_arg_pointer (void);
 119 extern rtx default_static_chain (const_tree, bool);
 120 extern void default_trampoline_init (rtx, tree, rtx);
 121 extern int default_return_pops_args (tree, tree, int);
 122 extern reg_class_t default_branch_target_register_class (void);
 123 #ifdef IRA_COVER_CLASSES
 124 extern const reg_class_t *default_ira_cover_classes (void);
 125 #endif
 126 extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
 127                                              enum machine_mode,
 128                                              secondary_reload_info *);
 129 extern void default_target_option_override (void);
 130 extern void hook_void_bitmap (bitmap);
 131 extern bool default_handle_c_option (size_t, const char *, int);
 132 extern int default_reloc_rw_mask (void);
 133 extern tree default_mangle_decl_assembler_name (tree, tree);
 134 extern tree default_emutls_var_fields (tree, tree *);
 135 extern tree default_emutls_var_init (tree, tree, tree);
 136 extern bool default_hard_regno_scratch_ok (unsigned int);
 137 extern bool default_mode_dependent_address_p (const_rtx addr);
 138 extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
 139 extern bool default_target_option_pragma_parse (tree, tree);
 140 extern bool default_target_can_inline_p (tree, tree);
 141 extern bool default_valid_pointer_mode (enum machine_mode);
 142 extern enum machine_mode default_addr_space_pointer_mode (addr_space_t);
 143 extern enum machine_mode default_addr_space_address_mode (addr_space_t);
 144 extern bool default_addr_space_valid_pointer_mode (enum machine_mode,
 145                                                    addr_space_t);
 146 extern bool default_addr_space_legitimate_address_p (enum machine_mode, rtx,
 147                                                      bool, addr_space_t);
 148 extern rtx default_addr_space_legitimize_address (rtx, rtx, enum machine_mode,
 149                                                   addr_space_t);
 150 extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
 151 extern rtx default_addr_space_convert (rtx, tree, tree);
 152 extern unsigned int default_case_values_threshold (void);
 153 extern bool default_have_conditional_execution (void);
 154 extern int default_memory_move_cost (enum machine_mode, reg_class_t, bool);
 155 extern int default_register_move_cost (enum machine_mode, reg_class_t,
 156                                        reg_class_t);
 157
 158 extern bool default_profile_before_prologue (void);
 159 extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
 160 extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
 161 extern bool default_class_likely_spilled_p (reg_class_t);
 162
 163 extern enum unwind_info_type default_debug_unwind_info (void);
 164 extern enum unwind_info_type default_except_unwind_info (void);
 165 extern enum unwind_info_type dwarf2_except_unwind_info (void);
 166 extern enum unwind_info_type sjlj_except_unwind_info (void);
 167
 168 extern int default_label_align_after_barrier_max_skip (rtx);
 169 extern int default_loop_align_max_skip (rtx);
 170 extern int default_label_align_max_skip (rtx);
 171 extern int default_jump_align_max_skip (rtx);
 172
 173 extern enum machine_mode default_get_reg_raw_mode(int);
 174
 175 extern const struct default_options empty_optimization_table[];