Mercurial > hg > CbC > CbC_gcc
annotate gcc/lto-opts.c @ 132:d34655255c78
update gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 10:21:07 +0900 |
parents | 84e7813d76e9 |
children | 1830386684a0 |
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1 /* LTO IL options. |
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2 |
131 | 3 Copyright (C) 2009-2018 Free Software Foundation, Inc. |
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4 Contributed by Simon Baldwin <simonb@google.com> |
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5 |
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6 This file is part of GCC. |
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7 |
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8 GCC is free software; you can redistribute it and/or modify it under |
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9 the terms of the GNU General Public License as published by the Free |
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10 Software Foundation; either version 3, or (at your option) any later |
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11 version. |
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12 |
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with GCC; see the file COPYING3. If not see |
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20 <http://www.gnu.org/licenses/>. */ |
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21 |
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22 #include "config.h" |
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23 #include "system.h" |
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24 #include "coretypes.h" |
111 | 25 #include "backend.h" |
26 #include "target.h" | |
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27 #include "tree.h" |
111 | 28 #include "gimple.h" |
29 #include "cgraph.h" | |
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30 #include "lto-streamer.h" |
111 | 31 #include "opts.h" |
32 #include "toplev.h" | |
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33 |
111 | 34 /* Append the option piece OPT to the COLLECT_GCC_OPTIONS string |
35 set up by OB, appropriately quoted and separated by spaces | |
36 (if !*FIRST_P). */ | |
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37 |
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38 static void |
111 | 39 append_to_collect_gcc_options (struct obstack *ob, |
40 bool *first_p, const char *opt) | |
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41 { |
111 | 42 const char *p, *q = opt; |
43 if (!*first_p) | |
44 obstack_grow (ob, " ", 1); | |
45 obstack_grow (ob, "'", 1); | |
46 while ((p = strchr (q, '\''))) | |
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47 { |
111 | 48 obstack_grow (ob, q, p - q); |
49 obstack_grow (ob, "'\\''", 4); | |
50 q = ++p; | |
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51 } |
111 | 52 obstack_grow (ob, q, strlen (q)); |
53 obstack_grow (ob, "'", 1); | |
54 *first_p = false; | |
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55 } |
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56 |
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57 /* Write currently held options to an LTO IL section. */ |
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58 |
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59 void |
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60 lto_write_options (void) |
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61 { |
111 | 62 char *section_name; |
63 struct obstack temporary_obstack; | |
64 unsigned int i, j; | |
65 char *args; | |
66 bool first_p = true; | |
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67 |
111 | 68 section_name = lto_get_section_name (LTO_section_opts, NULL, NULL); |
69 lto_begin_section (section_name, false); | |
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70 |
111 | 71 obstack_init (&temporary_obstack); |
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72 |
111 | 73 if (!global_options_set.x_flag_openmp |
74 && !global_options.x_flag_openmp) | |
131 | 75 append_to_collect_gcc_options (&temporary_obstack, &first_p, |
76 "-fno-openmp"); | |
111 | 77 if (!global_options_set.x_flag_openacc |
78 && !global_options.x_flag_openacc) | |
79 append_to_collect_gcc_options (&temporary_obstack, &first_p, | |
80 "-fno-openacc"); | |
131 | 81 /* Append PIC/PIE mode because its default depends on target and it is |
82 subject of merging in lto-wrapper. */ | |
83 if (!global_options_set.x_flag_pic && !global_options_set.x_flag_pie) | |
84 { | |
85 append_to_collect_gcc_options (&temporary_obstack, &first_p, | |
86 global_options.x_flag_pic == 2 | |
87 ? "-fPIC" | |
88 : global_options.x_flag_pic == 1 | |
89 ? "-fpic" | |
90 : global_options.x_flag_pie == 2 | |
91 ? "-fPIE" | |
92 : global_options.x_flag_pie == 1 | |
93 ? "-fpie" | |
94 : "-fno-pie"); | |
95 } | |
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96 |
111 | 97 /* Append options from target hook and store them to offload_lto section. */ |
98 if (lto_stream_offload_p) | |
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99 { |
111 | 100 char *offload_opts = targetm.offload_options (); |
101 char *offload_ptr = offload_opts; | |
102 while (offload_ptr) | |
103 { | |
104 char *next = strchr (offload_ptr, ' '); | |
105 if (next) | |
106 *next++ = '\0'; | |
107 append_to_collect_gcc_options (&temporary_obstack, &first_p, | |
108 offload_ptr); | |
109 offload_ptr = next; | |
110 } | |
111 free (offload_opts); | |
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112 } |
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113 |
111 | 114 /* Output explicitly passed options. */ |
115 for (i = 1; i < save_decoded_options_count; ++i) | |
116 { | |
117 struct cl_decoded_option *option = &save_decoded_options[i]; | |
118 | |
119 /* Skip explicitly some common options that we do not need. */ | |
120 switch (option->opt_index) | |
121 { | |
122 case OPT_dumpbase: | |
123 case OPT_SPECIAL_unknown: | |
124 case OPT_SPECIAL_ignore: | |
131 | 125 case OPT_SPECIAL_deprecated: |
111 | 126 case OPT_SPECIAL_program_name: |
127 case OPT_SPECIAL_input_file: | |
131 | 128 case OPT_dumpdir: |
129 case OPT_fresolution_: | |
111 | 130 continue; |
131 | |
132 default: | |
133 break; | |
134 } | |
135 | |
136 /* Skip frontend and driver specific options here. */ | |
137 if (!(cl_options[option->opt_index].flags & (CL_COMMON|CL_TARGET|CL_LTO))) | |
138 continue; | |
139 | |
140 /* Do not store target-specific options in offload_lto section. */ | |
141 if ((cl_options[option->opt_index].flags & CL_TARGET) | |
142 && lto_stream_offload_p) | |
143 continue; | |
144 | |
145 /* Drop options created from the gcc driver that will be rejected | |
146 when passed on to the driver again. */ | |
147 if (cl_options[option->opt_index].cl_reject_driver) | |
148 continue; | |
149 | |
150 /* Also drop all options that are handled by the driver as well, | |
151 which includes things like -o and -v or -fhelp for example. | |
152 We do not need those. The only exception is -foffload option, if we | |
153 write it in offload_lto section. Also drop all diagnostic options. */ | |
154 if ((cl_options[option->opt_index].flags & (CL_DRIVER|CL_WARNING)) | |
155 && (!lto_stream_offload_p || option->opt_index != OPT_foffload_)) | |
156 continue; | |
157 | |
158 for (j = 0; j < option->canonical_option_num_elements; ++j) | |
159 append_to_collect_gcc_options (&temporary_obstack, &first_p, | |
160 option->canonical_option[j]); | |
161 } | |
162 obstack_grow (&temporary_obstack, "\0", 1); | |
163 args = XOBFINISH (&temporary_obstack, char *); | |
164 lto_write_data (args, strlen (args) + 1); | |
165 lto_end_section (); | |
166 | |
167 obstack_free (&temporary_obstack, NULL); | |
168 free (section_name); | |
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169 } |