Mercurial > hg > CbC > CbC_gcc
comparison gcc/adjust-alignment.c @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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145:1830386684a0 | 152:2b5abeee2509 |
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1 /* Adjust alignment for local variable. | |
2 Copyright (C) 2020 Free Software Foundation, Inc. | |
3 Contributed by Kito Cheng <kito.cheng@sifive.com> | |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it under | |
8 the terms of the GNU General Public License as published by the Free | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #include "config.h" | |
22 #include "system.h" | |
23 #include "coretypes.h" | |
24 #include "backend.h" | |
25 #include "target.h" | |
26 #include "tree.h" | |
27 #include "tree-pass.h" | |
28 #include "memmodel.h" | |
29 #include "tm_p.h" | |
30 | |
31 namespace { | |
32 | |
33 const pass_data pass_data_adjust_alignment = | |
34 { | |
35 GIMPLE_PASS, /* type */ | |
36 "adjust_alignment", /* name */ | |
37 OPTGROUP_NONE, /* optinfo_flags */ | |
38 TV_NONE, /* tv_id */ | |
39 0, /* properties_required */ | |
40 0, /* properties_provided */ | |
41 0, /* properties_destroyed */ | |
42 0, /* todo_flags_start */ | |
43 0, /* todo_flags_finish */ | |
44 }; | |
45 | |
46 class pass_adjust_alignment : public gimple_opt_pass | |
47 { | |
48 public: | |
49 pass_adjust_alignment (gcc::context *ctxt) | |
50 : gimple_opt_pass (pass_data_adjust_alignment, ctxt) | |
51 {} | |
52 | |
53 virtual unsigned int execute (function *); | |
54 }; // class pass_adjust_alignment | |
55 | |
56 } // anon namespace | |
57 | |
58 /* Entry point to adjust_alignment pass. */ | |
59 unsigned int | |
60 pass_adjust_alignment::execute (function *fun) | |
61 { | |
62 size_t i; | |
63 tree var; | |
64 | |
65 FOR_EACH_LOCAL_DECL (fun, i, var) | |
66 { | |
67 /* Don't adjust aligment for static local var and hard register var. */ | |
68 if (is_global_var (var) || DECL_HARD_REGISTER (var)) | |
69 continue; | |
70 | |
71 unsigned align = LOCAL_DECL_ALIGNMENT (var); | |
72 | |
73 /* Make sure alignment only increase. */ | |
74 gcc_assert (align >= DECL_ALIGN (var)); | |
75 | |
76 SET_DECL_ALIGN (var, align); | |
77 } | |
78 return 0; | |
79 } | |
80 | |
81 gimple_opt_pass * | |
82 make_pass_adjust_alignment (gcc::context *ctxt) | |
83 { | |
84 return new pass_adjust_alignment (ctxt); | |
85 } |