aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/target-globals.c
blob: 7cf95aeeddfe98037ba8631e2d0b3142980b7755 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/* Target-dependent globals.
   Copyright (C) 2010-2014 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "insn-config.h"
#include "machmode.h"
#include "tree.h"
#include "ggc.h"
#include "toplev.h"
#include "target-globals.h"
#include "flags.h"
#include "regs.h"
#include "rtl.h"
#include "hard-reg-set.h"
#include "reload.h"
#include "expmed.h"
#include "expr.h"
#include "optabs.h"
#include "libfuncs.h"
#include "cfgloop.h"
#include "ira-int.h"
#include "lra-int.h"
#include "builtins.h"
#include "gcse.h"
#include "bb-reorder.h"
#include "lower-subreg.h"

#if SWITCHABLE_TARGET
struct target_globals default_target_globals = {
  &default_target_flag_state,
  &default_target_regs,
  &default_target_rtl,
  &default_target_hard_regs,
  &default_target_reload,
  &default_target_expmed,
  &default_target_optabs,
  &default_target_libfuncs,
  &default_target_cfgloop,
  &default_target_ira,
  &default_target_ira_int,
  &default_target_lra_int,
  &default_target_builtins,
  &default_target_gcse,
  &default_target_bb_reorder,
  &default_target_lower_subreg
};

struct target_globals *
save_target_globals (void)
{
  struct target_globals *g;
  struct target_globals_extra {
    struct target_globals g;
    struct target_flag_state flag_state;
    struct target_optabs optabs;
    struct target_cfgloop cfgloop;
    struct target_builtins builtins;
    struct target_gcse gcse;
    struct target_bb_reorder bb_reorder;
    struct target_lower_subreg lower_subreg;
  } *p;
  p = (struct target_globals_extra *)
      ggc_internal_cleared_alloc (sizeof (struct target_globals_extra));
  g = (struct target_globals *) p;
  g->flag_state = &p->flag_state;
  g->regs = ggc_internal_cleared_alloc (sizeof (struct target_regs));
  g->rtl = ggc_alloc_cleared_target_rtl ();
  g->hard_regs
    = ggc_internal_cleared_alloc (sizeof (struct target_hard_regs));
  g->reload = ggc_internal_cleared_alloc (sizeof (struct target_reload));
  g->expmed =  ggc_internal_cleared_alloc (sizeof (struct target_expmed));
  g->optabs = &p->optabs;
  g->libfuncs = ggc_alloc_cleared_target_libfuncs ();
  g->cfgloop = &p->cfgloop;
  g->ira = ggc_internal_cleared_alloc (sizeof (struct target_ira));
  g->ira_int = ggc_internal_cleared_alloc (sizeof (struct target_ira_int));
  g->lra_int = ggc_internal_cleared_alloc (sizeof (struct target_lra_int));
  g->builtins = &p->builtins;
  g->gcse = &p->gcse;
  g->bb_reorder = &p->bb_reorder;
  g->lower_subreg = &p->lower_subreg;
  restore_target_globals (g);
  init_reg_sets ();
  target_reinit ();
  return g;
}

/* Like save_target_globals() above, but set *this_target_optabs
   correctly when a previous function has changed
   *this_target_optabs.  */

struct target_globals *
save_target_globals_default_opts ()
{
  struct target_globals *globals;

  if (optimization_current_node != optimization_default_node)
    {
      tree opts = optimization_current_node;
      /* Temporarily switch to the default optimization node, so that
	 *this_target_optabs is set to the default, not reflecting
	 whatever a previous function used for the optimize
	 attribute.  */
      optimization_current_node = optimization_default_node;
      cl_optimization_restore
	(&global_options,
	 TREE_OPTIMIZATION (optimization_default_node));
      globals = save_target_globals ();
      optimization_current_node = opts;
      cl_optimization_restore (&global_options,
			       TREE_OPTIMIZATION (opts));
      return globals;
    }
  return save_target_globals ();
}

#endif