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1 /* Definitions of target machine for GCC for IA-32.
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2 Copyright (C) 1988, 1992, 1994, 1995, 1996, 1996, 1997, 1998, 1999,
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3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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4 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 /* Functions in i386.c */
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23 extern void override_options (bool);
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24 extern void optimization_options (int, int);
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25
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26 extern int ix86_can_use_return_insn_p (void);
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27 extern int ix86_frame_pointer_required (void);
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28 extern void ix86_setup_frame_addresses (void);
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29
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30 extern void ix86_file_end (void);
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31 extern int ix86_can_eliminate (int, int);
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32 extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int);
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33 extern void ix86_expand_prologue (void);
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34 extern void ix86_expand_epilogue (int);
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35
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36 extern void ix86_output_addr_vec_elt (FILE *, int);
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37 extern void ix86_output_addr_diff_elt (FILE *, int, int);
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38
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39 #ifdef RTX_CODE
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40 extern int standard_80387_constant_p (rtx);
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41 extern const char *standard_80387_constant_opcode (rtx);
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42 extern rtx standard_80387_constant_rtx (int);
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43 extern int standard_sse_constant_p (rtx);
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44 extern const char *standard_sse_constant_opcode (rtx, rtx);
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45 extern int symbolic_reference_mentioned_p (rtx);
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46 extern bool extended_reg_mentioned_p (rtx);
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47 extern bool x86_extended_QIreg_mentioned_p (rtx);
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48 extern bool x86_extended_reg_mentioned_p (rtx);
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49 extern enum machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx);
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50
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51 extern int ix86_expand_movmem (rtx, rtx, rtx, rtx, rtx, rtx);
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52 extern int ix86_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx);
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53 extern int ix86_expand_strlen (rtx, rtx, rtx, rtx);
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54
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55 extern bool legitimate_constant_p (rtx);
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56 extern bool constant_address_p (rtx);
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57 extern bool legitimate_pic_operand_p (rtx);
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58 extern int legitimate_pic_address_disp_p (rtx);
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59 extern int legitimate_address_p (enum machine_mode, rtx, int);
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60 extern rtx legitimize_address (rtx, rtx, enum machine_mode);
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61
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62 extern void print_reg (rtx, int, FILE*);
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63 extern void print_operand (FILE*, rtx, int);
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64 extern void print_operand_address (FILE*, rtx);
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65 extern bool output_addr_const_extra (FILE*, rtx);
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66
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67 extern void split_di (rtx[], int, rtx[], rtx[]);
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68 extern void split_ti (rtx[], int, rtx[], rtx[]);
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69
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70 extern const char *output_set_got (rtx, rtx);
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71 extern const char *output_387_binary_op (rtx, rtx*);
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72 extern const char *output_387_reg_move (rtx, rtx*);
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73 extern const char *output_fix_trunc (rtx, rtx*, int);
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74 extern const char *output_fp_compare (rtx, rtx*, int, int);
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75
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76 extern void ix86_expand_clear (rtx);
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77 extern void ix86_expand_move (enum machine_mode, rtx[]);
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78 extern void ix86_expand_vector_move (enum machine_mode, rtx[]);
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79 extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]);
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80 extern void ix86_expand_push (enum machine_mode, rtx);
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81 extern rtx ix86_fixup_binary_operands (enum rtx_code,
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82 enum machine_mode, rtx[]);
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83 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code,
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84 enum machine_mode, rtx[]);
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85 extern void ix86_expand_binary_operator (enum rtx_code,
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86 enum machine_mode, rtx[]);
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87 extern int ix86_binary_operator_ok (enum rtx_code, enum machine_mode, rtx[]);
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88 extern void ix86_expand_unary_operator (enum rtx_code, enum machine_mode,
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89 rtx[]);
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90 extern rtx ix86_build_const_vector (enum machine_mode, bool, rtx);
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91 extern void ix86_split_convert_uns_si_sse (rtx[]);
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92 extern void ix86_expand_convert_uns_didf_sse (rtx, rtx);
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93 extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx);
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94 extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx);
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95 extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx);
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96 extern void ix86_expand_convert_sign_didf_sse (rtx, rtx);
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97 extern rtx ix86_build_signbit_mask (enum machine_mode, bool, bool);
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98 extern void ix86_expand_fp_absneg_operator (enum rtx_code, enum machine_mode,
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99 rtx[]);
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100 extern void ix86_expand_copysign (rtx []);
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101 extern void ix86_split_copysign_const (rtx []);
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102 extern void ix86_split_copysign_var (rtx []);
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103 extern int ix86_unary_operator_ok (enum rtx_code, enum machine_mode, rtx[]);
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104 extern int ix86_match_ccmode (rtx, enum machine_mode);
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105 extern rtx ix86_expand_compare (enum rtx_code, rtx *, rtx *);
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106 extern int ix86_use_fcomi_compare (enum rtx_code);
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107 extern void ix86_expand_branch (enum rtx_code, rtx);
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108 extern int ix86_expand_setcc (enum rtx_code, rtx);
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109 extern int ix86_expand_int_movcc (rtx[]);
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110 extern int ix86_expand_fp_movcc (rtx[]);
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111 extern bool ix86_expand_fp_vcond (rtx[]);
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112 extern bool ix86_expand_int_vcond (rtx[]);
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113 extern void ix86_expand_sse_unpack (rtx[], bool, bool);
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114 extern void ix86_expand_sse4_unpack (rtx[], bool, bool);
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115 extern void ix86_expand_sse5_unpack (rtx[], bool, bool);
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116 extern void ix86_expand_sse5_pack (rtx[]);
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117 extern int ix86_expand_int_addcc (rtx[]);
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118 extern void ix86_expand_call (rtx, rtx, rtx, rtx, rtx, int);
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119 extern void x86_initialize_trampoline (rtx, rtx, rtx);
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120 extern rtx ix86_zero_extend_to_Pmode (rtx);
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121 extern void ix86_split_long_move (rtx[]);
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122 extern void ix86_split_ashl (rtx *, rtx, enum machine_mode);
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123 extern void ix86_split_ashr (rtx *, rtx, enum machine_mode);
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124 extern void ix86_split_lshr (rtx *, rtx, enum machine_mode);
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125 extern rtx ix86_find_base_term (rtx);
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126 extern int ix86_check_movabs (rtx, int);
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127
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128 extern rtx assign_386_stack_local (enum machine_mode, enum ix86_stack_slot);
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129 extern int ix86_attr_length_immediate_default (rtx, int);
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130 extern int ix86_attr_length_address_default (rtx);
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131 extern int ix86_attr_length_vex_default (rtx, int, int);
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132
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133 extern enum machine_mode ix86_fp_compare_mode (enum rtx_code);
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134
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135 extern rtx ix86_libcall_value (enum machine_mode);
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136 extern bool ix86_function_value_regno_p (int);
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137 extern bool ix86_function_arg_regno_p (int);
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138 extern int ix86_function_arg_boundary (enum machine_mode, tree);
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139 extern bool ix86_sol10_return_in_memory (const_tree,const_tree);
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140 extern rtx ix86_force_to_memory (enum machine_mode, rtx);
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141 extern void ix86_free_from_memory (enum machine_mode);
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142 extern int ix86_cfun_abi (void);
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143 extern int ix86_function_abi (const_tree);
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144 extern int ix86_function_type_abi (const_tree);
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145 extern void ix86_call_abi_override (const_tree);
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146 extern tree ix86_fn_abi_va_list (tree);
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147 extern tree ix86_canonical_va_list_type (tree);
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148 extern int ix86_enum_va_list (int, const char **, tree *);
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149 extern int ix86_reg_parm_stack_space (const_tree);
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150
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151 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx,
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152 rtx, rtx, rtx, rtx);
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153 extern bool ix86_hard_regno_mode_ok (int, enum machine_mode);
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154 extern bool ix86_modes_tieable_p (enum machine_mode, enum machine_mode);
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155 extern int ix86_register_move_cost (enum machine_mode, enum reg_class,
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156 enum reg_class);
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157 extern int ix86_secondary_memory_needed (enum reg_class, enum reg_class,
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158 enum machine_mode, int);
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159 extern bool ix86_cannot_change_mode_class (enum machine_mode,
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160 enum machine_mode, enum reg_class);
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161 extern enum reg_class ix86_preferred_reload_class (rtx, enum reg_class);
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162 extern enum reg_class ix86_preferred_output_reload_class (rtx, enum reg_class);
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163 extern int ix86_memory_move_cost (enum machine_mode, enum reg_class, int);
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164 extern int ix86_mode_needed (int, rtx);
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165 extern void emit_i387_cw_initialization (int);
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166 extern bool ix86_fp_jump_nontrivial_p (enum rtx_code);
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167 extern void x86_order_regs_for_local_alloc (void);
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168 extern void x86_function_profiler (FILE *, int);
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169 extern void x86_emit_floatuns (rtx [2]);
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170 extern void ix86_emit_fp_unordered_jump (rtx);
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171
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172 extern void ix86_emit_i387_log1p (rtx, rtx);
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173 extern void ix86_emit_swdivsf (rtx, rtx, rtx, enum machine_mode);
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174 extern void ix86_emit_swsqrtsf (rtx, rtx, enum machine_mode, bool);
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175
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176 extern enum rtx_code ix86_reverse_condition (enum rtx_code, enum machine_mode);
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177
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178 extern void ix86_expand_lround (rtx, rtx);
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179 extern void ix86_expand_lfloorceil (rtx, rtx, bool);
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180 extern void ix86_expand_rint (rtx, rtx);
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181 extern void ix86_expand_floorceil (rtx, rtx, bool);
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182 extern void ix86_expand_floorceildf_32 (rtx, rtx, bool);
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183 extern void ix86_expand_round (rtx, rtx);
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184 extern void ix86_expand_rounddf_32 (rtx, rtx);
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185 extern void ix86_expand_trunc (rtx, rtx);
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186 extern void ix86_expand_truncdf_32 (rtx, rtx);
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187
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188 #ifdef TREE_CODE
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189 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree);
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190 extern rtx function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int);
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191 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
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192 tree, int);
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193 #endif
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194
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195 #endif
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196
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197 #ifdef TREE_CODE
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198 extern int ix86_return_pops_args (tree, tree, int);
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199
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200 extern int ix86_data_alignment (tree, int);
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201 extern unsigned int ix86_local_alignment (tree, enum machine_mode,
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202 unsigned int);
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203 extern int ix86_constant_alignment (tree, int);
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204 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *);
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205 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *);
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206 extern int x86_field_alignment (tree, int);
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207 extern tree ix86_valid_target_attribute_tree (tree);
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208 #endif
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209
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210 extern rtx ix86_tls_get_addr (void);
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211 extern rtx ix86_tls_module_base (void);
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212
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213 extern void ix86_expand_vector_init (bool, rtx, rtx);
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214 extern void ix86_expand_vector_set (bool, rtx, rtx, int);
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215 extern void ix86_expand_vector_extract (bool, rtx, rtx, int);
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216 extern void ix86_expand_reduc_v4sf (rtx (*)(rtx, rtx, rtx), rtx, rtx);
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217
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218 extern bool ix86_sse5_valid_op_p (rtx [], rtx, int, bool, int, bool);
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219 extern void ix86_expand_sse5_multiple_memory (rtx [], int, enum machine_mode);
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220
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221 /* In i386-c.c */
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222 extern void ix86_target_macros (void);
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223 extern void ix86_register_pragmas (void);
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224
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225 /* In winnt.c */
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226 extern void i386_pe_unique_section (tree, int);
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227 extern void i386_pe_declare_function_type (FILE *, const char *, int);
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228 extern void i386_pe_record_external_function (tree, const char *);
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229 extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int);
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230 extern void i386_pe_encode_section_info (tree, rtx, int);
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231 extern bool i386_pe_binds_local_p (const_tree);
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232 extern const char *i386_pe_strip_name_encoding_full (const char *);
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233 extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
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234 extern unsigned int i386_pe_section_type_flags (tree, const char *, int);
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235 extern void i386_pe_asm_named_section (const char *, unsigned int, tree);
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236 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
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237 const char *,
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238 HOST_WIDE_INT,
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239 HOST_WIDE_INT);
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240 extern void i386_pe_file_end (void);
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241 extern tree i386_pe_mangle_decl_assembler_name (tree, tree);
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242
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243 /* In winnt-cxx.c and winnt-stubs.c */
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244 extern void i386_pe_adjust_class_at_definition (tree);
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245 extern bool i386_pe_type_dllimport_p (tree);
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246 extern bool i386_pe_type_dllexport_p (tree);
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247
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248 extern rtx maybe_get_pool_constant (rtx);
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249
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250 extern char internal_label_prefix[16];
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251 extern int internal_label_prefix_len;
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252
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253 enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS };
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254 struct ix86_address
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255 {
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256 rtx base, index, disp;
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257 HOST_WIDE_INT scale;
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258 enum ix86_address_seg seg;
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259 };
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260
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261 extern int ix86_decompose_address (rtx, struct ix86_address *);
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262 extern int memory_address_length (rtx addr);
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263 extern void x86_output_aligned_bss (FILE *, tree, const char *,
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264 unsigned HOST_WIDE_INT, int);
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265 extern void x86_elf_aligned_common (FILE *, const char *,
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266 unsigned HOST_WIDE_INT, int);
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267
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268 #ifdef RTX_CODE
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269 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *,
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270 enum rtx_code *, enum rtx_code *);
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271 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code);
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272 extern rtx construct_plt_address (rtx);
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273 #endif
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274 extern int asm_preferred_eh_data_format (int, int);
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275
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276 #ifdef HAVE_ATTR_cpu
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277 extern enum attr_cpu ix86_schedule;
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278 #endif
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