3 Copyright (C) 2009-2020 Free Software Foundation, Inc.
4 Contributed by Simon Baldwin <simonb@google.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
24 #include "coretypes.h"
30 #include "lto-streamer.h"
34 /* Append the option piece OPT to the COLLECT_GCC_OPTIONS string
35 set up by OB, appropriately quoted and separated by spaces
39 append_to_collect_gcc_options (struct obstack
*ob
,
40 bool *first_p
, const char *opt
)
42 const char *p
, *q
= opt
;
44 obstack_grow (ob
, " ", 1);
45 obstack_grow (ob
, "'", 1);
46 while ((p
= strchr (q
, '\'')))
48 obstack_grow (ob
, q
, p
- q
);
49 obstack_grow (ob
, "'\\''", 4);
52 obstack_grow (ob
, q
, strlen (q
));
53 obstack_grow (ob
, "'", 1);
57 /* Write currently held options to an LTO IL section. */
60 lto_write_options (void)
63 struct obstack temporary_obstack
;
68 section_name
= lto_get_section_name (LTO_section_opts
, NULL
, 0, NULL
);
69 lto_begin_section (section_name
, false);
71 obstack_init (&temporary_obstack
);
73 if (!global_options_set
.x_flag_openmp
74 && !global_options
.x_flag_openmp
)
75 append_to_collect_gcc_options (&temporary_obstack
, &first_p
,
77 if (!global_options_set
.x_flag_openacc
78 && !global_options
.x_flag_openacc
)
79 append_to_collect_gcc_options (&temporary_obstack
, &first_p
,
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
)
85 append_to_collect_gcc_options (&temporary_obstack
, &first_p
,
86 global_options
.x_flag_pic
== 2
88 : global_options
.x_flag_pic
== 1
90 : global_options
.x_flag_pie
== 2
92 : global_options
.x_flag_pie
== 1
97 /* If debug info is enabled append -g. */
98 if (debug_info_level
> DINFO_LEVEL_NONE
)
99 append_to_collect_gcc_options (&temporary_obstack
, &first_p
, "-g");
101 /* Append options from target hook and store them to offload_lto section. */
102 if (lto_stream_offload_p
)
104 char *offload_opts
= targetm
.offload_options ();
105 char *offload_ptr
= offload_opts
;
108 char *next
= strchr (offload_ptr
, ' ');
111 append_to_collect_gcc_options (&temporary_obstack
, &first_p
,
118 /* Output explicitly passed options. */
119 for (i
= 1; i
< save_decoded_options_count
; ++i
)
121 struct cl_decoded_option
*option
= &save_decoded_options
[i
];
123 /* Skip explicitly some common options that we do not need. */
124 switch (option
->opt_index
)
127 case OPT_SPECIAL_unknown
:
128 case OPT_SPECIAL_ignore
:
129 case OPT_SPECIAL_warn_removed
:
130 case OPT_SPECIAL_program_name
:
131 case OPT_SPECIAL_input_file
:
133 case OPT_fresolution_
:
134 case OPT_fdebug_prefix_map_
:
135 case OPT_ffile_prefix_map_
:
136 case OPT_fmacro_prefix_map_
:
143 /* Skip frontend and driver specific options here. */
144 if (!(cl_options
[option
->opt_index
].flags
& (CL_COMMON
|CL_TARGET
|CL_LTO
)))
147 /* Do not store target-specific options in offload_lto section. */
148 if ((cl_options
[option
->opt_index
].flags
& CL_TARGET
)
149 && lto_stream_offload_p
)
152 /* Drop options created from the gcc driver that will be rejected
153 when passed on to the driver again. */
154 if (cl_options
[option
->opt_index
].cl_reject_driver
)
157 /* Also drop all options that are handled by the driver as well,
158 which includes things like -o and -v or -fhelp for example.
159 We do not need those. The only exception is -foffload option, if we
160 write it in offload_lto section. Also drop all diagnostic options. */
161 if ((cl_options
[option
->opt_index
].flags
& (CL_DRIVER
|CL_WARNING
))
162 && (!lto_stream_offload_p
|| option
->opt_index
!= OPT_foffload_
))
165 for (j
= 0; j
< option
->canonical_option_num_elements
; ++j
)
166 append_to_collect_gcc_options (&temporary_obstack
, &first_p
,
167 option
->canonical_option
[j
]);
170 const char *collect_as_options
= getenv ("COLLECT_AS_OPTIONS");
171 if (collect_as_options
)
172 prepend_xassembler_to_collect_as_options (collect_as_options
,
175 obstack_grow (&temporary_obstack
, "\0", 1);
176 args
= XOBFINISH (&temporary_obstack
, char *);
177 lto_write_data (args
, strlen (args
) + 1);
180 obstack_free (&temporary_obstack
, NULL
);