gcc/target-globals.c

   1 /* Target-dependent globals.
   2    Copyright (C) 2010-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "insn-config.h"
  25 #include "alias.h"
  26 #include "symtab.h"
  27 #include "tree.h"
  28 #include "toplev.h"
  29 #include "target-globals.h"
  30 #include "flags.h"
  31 #include "regs.h"
  32 #include "rtl.h"
  33 #include "hard-reg-set.h"
  34 #include "reload.h"
  35 #include "expmed.h"
  36 #include "function.h"
  37 #include "dojump.h"
  38 #include "explow.h"
  39 #include "calls.h"
  40 #include "emit-rtl.h"
  41 #include "varasm.h"
  42 #include "stmt.h"
  43 #include "expr.h"
  44 #include "insn-codes.h"
  45 #include "optabs.h"
  46 #include "libfuncs.h"
  47 #include "cfgloop.h"
  48 #include "ira-int.h"
  49 #include "builtins.h"
  50 #include "gcse.h"
  51 #include "bb-reorder.h"
  52 #include "lower-subreg.h"
  53 #include "recog.h"
  54
  55 #if SWITCHABLE_TARGET
  56 struct target_globals default_target_globals = {
  57   &default_target_flag_state,
  58   &default_target_regs,
  59   &default_target_rtl,
  60   &default_target_recog,
  61   &default_target_hard_regs,
  62   &default_target_reload,
  63   &default_target_expmed,
  64   &default_target_optabs,
  65   &default_target_libfuncs,
  66   &default_target_cfgloop,
  67   &default_target_ira,
  68   &default_target_ira_int,
  69   &default_target_builtins,
  70   &default_target_gcse,
  71   &default_target_bb_reorder,
  72   &default_target_lower_subreg
  73 };
  74
  75 struct target_globals *
  76 save_target_globals (void)
  77 {
  78   struct target_globals *g = ggc_cleared_alloc <target_globals> ();
  79   g->flag_state = XCNEW (struct target_flag_state);
  80   g->regs = XCNEW (struct target_regs);
  81   g->rtl = ggc_cleared_alloc<target_rtl> ();
  82   g->recog = XCNEW (struct target_recog);
  83   g->hard_regs = XCNEW (struct target_hard_regs);
  84   g->reload = XCNEW (struct target_reload);
  85   g->expmed = XCNEW (struct target_expmed);
  86   g->optabs = XCNEW (struct target_optabs);
  87   g->libfuncs = ggc_cleared_alloc<target_libfuncs> ();
  88   g->cfgloop = XCNEW (struct target_cfgloop);
  89   g->ira = XCNEW (struct target_ira);
  90   g->ira_int = XCNEW (struct target_ira_int);
  91   g->builtins = XCNEW (struct target_builtins);
  92   g->gcse = XCNEW (struct target_gcse);
  93   g->bb_reorder = XCNEW (struct target_bb_reorder);
  94   g->lower_subreg = XCNEW (struct target_lower_subreg);
  95   restore_target_globals (g);
  96   init_reg_sets ();
  97   target_reinit ();
  98   return g;
  99 }
 100
 101 /* Like save_target_globals() above, but set *this_target_optabs
 102    correctly when a previous function has changed
 103    *this_target_optabs.  */
 104
 105 struct target_globals *
 106 save_target_globals_default_opts ()
 107 {
 108   struct target_globals *globals;
 109
 110   if (optimization_current_node != optimization_default_node)
 111     {
 112       tree opts = optimization_current_node;
 113       /* Temporarily switch to the default optimization node, so that
 114          *this_target_optabs is set to the default, not reflecting
 115          whatever a previous function used for the optimize
 116          attribute.  */
 117       optimization_current_node = optimization_default_node;
 118       cl_optimization_restore
 119         (&global_options,
 120          TREE_OPTIMIZATION (optimization_default_node));
 121       globals = save_target_globals ();
 122       optimization_current_node = opts;
 123       cl_optimization_restore (&global_options,
 124                                TREE_OPTIMIZATION (opts));
 125       return globals;
 126     }
 127   return save_target_globals ();
 128 }
 129
 130 target_globals::~target_globals ()
 131 {
 132   /* default_target_globals points to static data so shouldn't be freed.  */
 133   if (this != &default_target_globals)
 134     {
 135       ira_int->~target_ira_int ();
 136       hard_regs->finalize ();
 137       XDELETE (flag_state);
 138       XDELETE (regs);
 139       XDELETE (recog);
 140       XDELETE (hard_regs);
 141       XDELETE (reload);
 142       XDELETE (expmed);
 143       XDELETE (optabs);
 144       XDELETE (cfgloop);
 145       XDELETE (ira);
 146       XDELETE (ira_int);
 147       XDELETE (builtins);
 148       XDELETE (gcse);
 149       XDELETE (bb_reorder);
 150       XDELETE (lower_subreg);
 151     }
 152 }
 153
 154 #endif