1/* Target-dependent globals.
2 Copyright (C) 2010-2023 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along 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
46class target_globals default_target_globals = {
47 .flag_state: &default_target_flag_state,
48 .regs: &default_target_regs,
49 .rtl: &default_target_rtl,
50 .recog: &default_target_recog,
51 .hard_regs: &default_target_hard_regs,
52 .function_abi_info: &default_target_function_abi_info,
53 .reload: &default_target_reload,
54 .expmed: &default_target_expmed,
55 .optabs: &default_target_optabs,
56 .libfuncs: &default_target_libfuncs,
57 .cfgloop: &default_target_cfgloop,
58 .ira: &default_target_ira,
59 .ira_int: &default_target_ira_int,
60 .builtins: &default_target_builtins,
61 .gcse: &default_target_gcse,
62 .bb_reorder: &default_target_bb_reorder,
63 .lower_subreg: &default_target_lower_subreg
64};
65
66class target_globals *
67save_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
97class target_globals *
98save_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, &global_options_set,
112 TREE_OPTIMIZATION (optimization_default_node));
113 globals = save_target_globals ();
114 optimization_current_node = opts;
115 cl_optimization_restore (&global_options, &global_options_set,
116 TREE_OPTIMIZATION (opts));
117 return globals;
118 }
119 return save_target_globals ();
120}
121
122target_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

source code of gcc/target-globals.cc