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Simplify LTO section format. 

2019-07-22  Martin Liska  <mliska@suse.cz>

	* lto-section-in.c (lto_get_section_data):
	Use new function get_compression.
	* lto-streamer-out.c (produce_lto_section): Use
	set_compression to encode compression algorithm.
	* lto-streamer.h (struct lto_section): Do not
	use bitfields in the format.

From-SVN: r273661
This commit is contained in:
Martin Liska 2019-07-22 09:34:32 +02:00 committed by Martin Liska
parent 2df89b66f1
commit d1caf05a89
4 changed files with 29 additions and 5 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2019-07-22 Martin Liska <mliska@suse.cz>
* lto-section-in.c (lto_get_section_data):
Use new function get_compression.
* lto-streamer-out.c (produce_lto_section): Use
set_compression to encode compression algorithm.
* lto-streamer.h (struct lto_section): Do not
use bitfields in the format.
2019-07-22 Martin Liska <mliska@suse.cz>
PR driver/91172

3
gcc/lto-section-in.c
View File

@ -161,7 +161,8 @@ lto_get_section_data (struct lto_file_decl_data *file_data,
stream = lto_start_uncompression (lto_append_data, &buffer);
lto_uncompress_block (stream, data, *len);
lto_end_uncompression (stream, file_data->lto_section_header.compression);
lto_end_uncompression (stream,
file_data->lto_section_header.get_compression ());
*len = buffer.length - header_length;
data = buffer.data + header_length;

3
gcc/lto-streamer-out.c
View File

@ -2403,7 +2403,8 @@ produce_lto_section ()
bool slim_object = flag_generate_lto && !flag_fat_lto_objects;
lto_section s
= { LTO_major_version, LTO_minor_version, slim_object, compression, 0 };
= { LTO_major_version, LTO_minor_version, slim_object, 0 };
s.set_compression (compression);
lto_write_data (&s, sizeof s);
lto_end_section ();
destroy_output_block (ob);

19
gcc/lto-streamer.h
View File

@ -394,9 +394,22 @@ struct lto_section
{
int16_t major_version;
int16_t minor_version;
unsigned char slim_object: 1;
lto_compression compression: 4;
int32_t reserved0: 27;
unsigned char slim_object;
/* Flags is a private field that is not defined publicly. */
uint16_t flags;
/* Set compression to FLAGS. */
inline void set_compression (lto_compression c)
{
flags = c;
}
/* Get compression from FLAGS. */
inline lto_compression get_compression ()
{
return (lto_compression) flags;
}
};
STATIC_ASSERT (sizeof (lto_section) == 8);