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