1 /* Target-dependent globals.
2 Copyright (C) 2010-2020 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 #include "function-abi.h"
44
45 #if SWITCHABLE_TARGET
46 class target_globals default_target_globals = {
47 &default_target_flag_state,
48 &default_target_regs,
49 &default_target_rtl,
50 &default_target_recog,
51 &default_target_hard_regs,
52 &default_target_function_abi_info,
53 &default_target_reload,
54 &default_target_expmed,
55 &default_target_optabs,
56 &default_target_libfuncs,
57 &default_target_cfgloop,
58 &default_target_ira,
59 &default_target_ira_int,
60 &default_target_builtins,
61 &default_target_gcse,
62 &default_target_bb_reorder,
63 &default_target_lower_subreg
64 };
65
66 class target_globals *
save_target_globals(void)67 save_target_globals (void)
68 {
69 class target_globals *g = ggc_cleared_alloc <target_globals> ();
70 g->flag_state = XCNEW (class target_flag_state);
71 g->regs = XCNEW (struct target_regs);
72 g->rtl = ggc_cleared_alloc<target_rtl> ();
73 g->recog = XCNEW (struct target_recog);
74 g->hard_regs = XCNEW (struct target_hard_regs);
75 g->function_abi_info = XCNEW (struct target_function_abi_info);
76 g->reload = XCNEW (struct target_reload);
77 g->expmed = XCNEW (struct target_expmed);
78 g->optabs = XCNEW (struct target_optabs);
79 g->libfuncs = ggc_cleared_alloc<target_libfuncs> ();
80 g->cfgloop = XCNEW (struct target_cfgloop);
81 g->ira = XCNEW (struct target_ira);
82 g->ira_int = XCNEW (class target_ira_int);
83 g->builtins = XCNEW (struct target_builtins);
84 g->gcse = XCNEW (struct target_gcse);
85 g->bb_reorder = XCNEW (struct target_bb_reorder);
86 g->lower_subreg = XCNEW (struct target_lower_subreg);
87 restore_target_globals (g);
88 init_reg_sets ();
89 target_reinit ();
90 return g;
91 }
92
93 /* Like save_target_globals() above, but set *this_target_optabs
94 correctly when a previous function has changed
95 *this_target_optabs. */
96
97 class target_globals *
save_target_globals_default_opts()98 save_target_globals_default_opts ()
99 {
100 class target_globals *globals;
101
102 if (optimization_current_node != optimization_default_node)
103 {
104 tree opts = optimization_current_node;
105 /* Temporarily switch to the default optimization node, so that
106 *this_target_optabs is set to the default, not reflecting
107 whatever a previous function used for the optimize
108 attribute. */
109 optimization_current_node = optimization_default_node;
110 cl_optimization_restore
111 (&global_options,
112 TREE_OPTIMIZATION (optimization_default_node));
113 globals = save_target_globals ();
114 optimization_current_node = opts;
115 cl_optimization_restore (&global_options,
116 TREE_OPTIMIZATION (opts));
117 return globals;
118 }
119 return save_target_globals ();
120 }
121
~target_globals()122 target_globals::~target_globals ()
123 {
124 /* default_target_globals points to static data so shouldn't be freed. */
125 if (this != &default_target_globals)
126 {
127 ira_int->~target_ira_int ();
128 hard_regs->finalize ();
129 XDELETE (flag_state);
130 XDELETE (regs);
131 XDELETE (recog);
132 XDELETE (hard_regs);
133 XDELETE (function_abi_info);
134 XDELETE (reload);
135 XDELETE (expmed);
136 XDELETE (optabs);
137 XDELETE (cfgloop);
138 XDELETE (ira);
139 XDELETE (ira_int);
140 XDELETE (builtins);
141 XDELETE (gcse);
142 XDELETE (bb_reorder);
143 XDELETE (lower_subreg);
144 }
145 }
146
147 #endif
148