gcc/target-globals.c

   1 /* Target-dependent globals.
   2    Copyright (C) 2010-2017 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 "backend.h"
  24 #include "rtl.h"
  25 #include "tree.h"
  26 #include "expmed.h"
  27 #include "optabs-query.h"
  28 #include "insn-config.h"
  29 #include "regs.h"
  30 #include "memmodel.h"
  31 #include "ira.h"
  32 #include "ira-int.h"
  33 #include "toplev.h"
  34 #include "target-globals.h"
  35 #include "flags.h"
  36 #include "reload.h"
  37 #include "libfuncs.h"
  38 #include "cfgloop.h"
  39 #include "builtins.h"
  40 #include "gcse.h"
  41 #include "bb-reorder.h"
  42 #include "lower-subreg.h"
  43
  44 #if SWITCHABLE_TARGET
  45 struct target_globals default_target_globals = {
  46   &default_target_flag_state,
  47   &default_target_regs,
  48   &default_target_rtl,
  49   &default_target_recog,
  50   &default_target_hard_regs,
  51   &default_target_reload,
  52   &default_target_expmed,
  53   &default_target_optabs,
  54   &default_target_libfuncs,
  55   &default_target_cfgloop,
  56   &default_target_ira,
  57   &default_target_ira_int,
  58   &default_target_builtins,
  59   &default_target_gcse,
  60   &default_target_bb_reorder,
  61   &default_target_lower_subreg
  62 };
  63
  64 struct target_globals *
  65 save_target_globals (void)
  66 {
  67   struct target_globals *g = ggc_cleared_alloc <target_globals> ();
  68   g->flag_state = XCNEW (struct target_flag_state);
  69   g->regs = XCNEW (struct target_regs);
  70   g->rtl = ggc_cleared_alloc<target_rtl> ();
  71   g->recog = XCNEW (struct target_recog);
  72   g->hard_regs = XCNEW (struct target_hard_regs);
  73   g->reload = XCNEW (struct target_reload);
  74   g->expmed = XCNEW (struct target_expmed);
  75   g->optabs = XCNEW (struct target_optabs);
  76   g->libfuncs = ggc_cleared_alloc<target_libfuncs> ();
  77   g->cfgloop = XCNEW (struct target_cfgloop);
  78   g->ira = XCNEW (struct target_ira);
  79   g->ira_int = XCNEW (struct target_ira_int);
  80   g->builtins = XCNEW (struct target_builtins);
  81   g->gcse = XCNEW (struct target_gcse);
  82   g->bb_reorder = XCNEW (struct target_bb_reorder);
  83   g->lower_subreg = XCNEW (struct target_lower_subreg);
  84   restore_target_globals (g);
  85   init_reg_sets ();
  86   target_reinit ();
  87   return g;
  88 }
  89
  90 /* Like save_target_globals() above, but set *this_target_optabs
  91    correctly when a previous function has changed
  92    *this_target_optabs.  */
  93
  94 struct target_globals *
  95 save_target_globals_default_opts ()
  96 {
  97   struct target_globals *globals;
  98
  99   if (optimization_current_node != optimization_default_node)
 100     {
 101       tree opts = optimization_current_node;
 102       /* Temporarily switch to the default optimization node, so that
 103          *this_target_optabs is set to the default, not reflecting
 104          whatever a previous function used for the optimize
 105          attribute.  */
 106       optimization_current_node = optimization_default_node;
 107       cl_optimization_restore
 108         (&global_options,
 109          TREE_OPTIMIZATION (optimization_default_node));
 110       globals = save_target_globals ();
 111       optimization_current_node = opts;
 112       cl_optimization_restore (&global_options,
 113                                TREE_OPTIMIZATION (opts));
 114       return globals;
 115     }
 116   return save_target_globals ();
 117 }
 118
 119 target_globals::~target_globals ()
 120 {
 121   /* default_target_globals points to static data so shouldn't be freed.  */
 122   if (this != &default_target_globals)
 123     {
 124       ira_int->~target_ira_int ();
 125       hard_regs->finalize ();
 126       XDELETE (flag_state);
 127       XDELETE (regs);
 128       XDELETE (recog);
 129       XDELETE (hard_regs);
 130       XDELETE (reload);
 131       XDELETE (expmed);
 132       XDELETE (optabs);
 133       XDELETE (cfgloop);
 134       XDELETE (ira);
 135       XDELETE (ira_int);
 136       XDELETE (builtins);
 137       XDELETE (gcse);
 138       XDELETE (bb_reorder);
 139       XDELETE (lower_subreg);
 140     }
 141 }
 142
 143 #endif