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1 /* Target-dependent globals.
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2 Copyright (C) 2010-2020 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #include "config.h"
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21 #include "system.h"
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22 #include "coretypes.h"
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23 #include "backend.h"
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24 #include "rtl.h"
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25 #include "tree.h"
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26 #include "expmed.h"
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27 #include "optabs-query.h"
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28 #include "insn-config.h"
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29 #include "regs.h"
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30 #include "memmodel.h"
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31 #include "ira.h"
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32 #include "ira-int.h"
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33 #include "toplev.h"
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34 #include "target-globals.h"
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35 #include "flags.h"
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36 #include "reload.h"
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37 #include "libfuncs.h"
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38 #include "cfgloop.h"
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39 #include "builtins.h"
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40 #include "gcse.h"
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41 #include "bb-reorder.h"
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42 #include "lower-subreg.h"
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43 #include "function-abi.h"
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44
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45 #if SWITCHABLE_TARGET
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46 class target_globals default_target_globals = {
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47 &default_target_flag_state,
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48 &default_target_regs,
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49 &default_target_rtl,
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50 &default_target_recog,
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51 &default_target_hard_regs,
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52 &default_target_function_abi_info,
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53 &default_target_reload,
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54 &default_target_expmed,
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55 &default_target_optabs,
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56 &default_target_libfuncs,
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57 &default_target_cfgloop,
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58 &default_target_ira,
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59 &default_target_ira_int,
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60 &default_target_builtins,
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61 &default_target_gcse,
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62 &default_target_bb_reorder,
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63 &default_target_lower_subreg
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64 };
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65
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66 class target_globals *
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67 save_target_globals (void)
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68 {
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69 class target_globals *g = ggc_cleared_alloc <target_globals> ();
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70 g->flag_state = XCNEW (class target_flag_state);
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71 g->regs = XCNEW (struct target_regs);
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72 g->rtl = ggc_cleared_alloc<target_rtl> ();
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73 g->recog = XCNEW (struct target_recog);
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74 g->hard_regs = XCNEW (struct target_hard_regs);
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75 g->function_abi_info = XCNEW (struct target_function_abi_info);
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76 g->reload = XCNEW (struct target_reload);
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77 g->expmed = XCNEW (struct target_expmed);
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78 g->optabs = XCNEW (struct target_optabs);
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79 g->libfuncs = ggc_cleared_alloc<target_libfuncs> ();
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80 g->cfgloop = XCNEW (struct target_cfgloop);
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81 g->ira = XCNEW (struct target_ira);
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82 g->ira_int = XCNEW (class target_ira_int);
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83 g->builtins = XCNEW (struct target_builtins);
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84 g->gcse = XCNEW (struct target_gcse);
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85 g->bb_reorder = XCNEW (struct target_bb_reorder);
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86 g->lower_subreg = XCNEW (struct target_lower_subreg);
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87 restore_target_globals (g);
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88 init_reg_sets ();
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89 target_reinit ();
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90 return g;
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91 }
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92
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93 /* Like save_target_globals() above, but set *this_target_optabs
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94 correctly when a previous function has changed
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95 *this_target_optabs. */
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96
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97 class target_globals *
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98 save_target_globals_default_opts ()
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99 {
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100 class target_globals *globals;
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101
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102 if (optimization_current_node != optimization_default_node)
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103 {
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104 tree opts = optimization_current_node;
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105 /* Temporarily switch to the default optimization node, so that
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106 *this_target_optabs is set to the default, not reflecting
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107 whatever a previous function used for the optimize
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108 attribute. */
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109 optimization_current_node = optimization_default_node;
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110 cl_optimization_restore
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111 (&global_options,
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112 TREE_OPTIMIZATION (optimization_default_node));
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113 globals = save_target_globals ();
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114 optimization_current_node = opts;
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115 cl_optimization_restore (&global_options,
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116 TREE_OPTIMIZATION (opts));
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117 return globals;
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118 }
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119 return save_target_globals ();
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120 }
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121
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122 target_globals::~target_globals ()
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123 {
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124 /* default_target_globals points to static data so shouldn't be freed. */
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125 if (this != &default_target_globals)
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126 {
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127 ira_int->~target_ira_int ();
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128 hard_regs->finalize ();
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129 XDELETE (flag_state);
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130 XDELETE (regs);
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131 XDELETE (recog);
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132 XDELETE (hard_regs);
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133 XDELETE (function_abi_info);
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134 XDELETE (reload);
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135 XDELETE (expmed);
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136 XDELETE (optabs);
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137 XDELETE (cfgloop);
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138 XDELETE (ira);
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139 XDELETE (ira_int);
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140 XDELETE (builtins);
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141 XDELETE (gcse);
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142 XDELETE (bb_reorder);
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143 XDELETE (lower_subreg);
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144 }
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145 }
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146
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147 #endif
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