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comparison gcc/common/common-targhooks.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /* Default common target hook functions.
2 Copyright (C) 2003-2017 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 "tm.h"
24 #include "common/common-target.h"
25 #include "common/common-targhooks.h"
26
27 /* Determine the exception handling mechanism for the target. */
28
29 enum unwind_info_type
30 default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
31 {
32 /* Obey the configure switch to turn on sjlj exceptions. */
33 #ifdef CONFIG_SJLJ_EXCEPTIONS
34 if (CONFIG_SJLJ_EXCEPTIONS)
35 return UI_SJLJ;
36 #endif
37
38 /* ??? Change all users to the hook, then poison this. */
39 #ifdef DWARF2_UNWIND_INFO
40 if (DWARF2_UNWIND_INFO)
41 return UI_DWARF2;
42 #endif
43
44 return UI_SJLJ;
45 }
46
47 /* To be used by targets that force dwarf2 unwind enabled. */
48
49 enum unwind_info_type
50 dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
51 {
52 /* Obey the configure switch to turn on sjlj exceptions. */
53 #ifdef CONFIG_SJLJ_EXCEPTIONS
54 if (CONFIG_SJLJ_EXCEPTIONS)
55 return UI_SJLJ;
56 #endif
57
58 return UI_DWARF2;
59 }
60
61 /* To be used by targets that force sjlj unwind enabled. */
62
63 enum unwind_info_type
64 sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
65 {
66 return UI_SJLJ;
67 }
68
69 /* Default version of TARGET_HANDLE_OPTION. */
70
71 bool
72 default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED,
73 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
74 const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
75 location_t loc ATTRIBUTE_UNUSED)
76 {
77 return true;
78 }
79
80 const struct default_options empty_optimization_table[] =
81 {
82 { OPT_LEVELS_NONE, 0, NULL, 0 }
83 };