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cgraph.c (cgraph_node::get_untransformed_body): Pass compressed flag to lto_get_section_data.

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* cgraph.c (cgraph_node::get_untransformed_body): Pass compressed
	flag to lto_get_section_data.
	* varpool.c (varpool_node::get_constructor): Likewise.
	* lto-section-in.c (lto_get_section_data): Add new flag decompress.
	(lto_free_section_data): Likewise.
	(lto_get_raw_section_data): New function.
	(lto_free_raw_section_data): New function.
	(copy_function_or_variable): Copy sections w/o decompressing.
	(lto_output_decl_state_refs): Picke compressed bit.
	* lto-streamer.h (lto_in_decl_state): New flag compressed.
	(lto_out_decl_state): Likewise.
	(lto_get_section_data, lto_free_section_data): Update prototypes
	(lto_get_raw_section_data, lto_free_raw_section_data): Declare.
	(lto_write_raw_data): Declare.
	(lto_begin_section): Remove FIXME.
	(lto_write_raw_data): New function.
	(lto_write_stream): Remove FIXME.
	(lto_new_out_decl_state): Set compressed flag.

From-SVN: r231594
This commit is contained in:
Jan Hubicka 2015-12-13 02:13:15 +00:00
parent ca83487662
commit 7fa658c2cc
2 changed files with 19 additions and 13 deletions
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18
gcc/lto-section-out.c
View File

@ -66,9 +66,6 @@ lto_begin_section (const char *name, bool compress)
{
lang_hooks.lto.begin_section (name);
/* FIXME lto: for now, suppress compression if the lang_hook that appends
data is anything other than assembler output. The effect here is that
we get compression of IL only in non-ltrans object files. */
gcc_assert (compression_stream == NULL);
if (compress)
compression_stream = lto_start_compression (lto_append_data, NULL);
@ -99,6 +96,14 @@ lto_write_data (const void *data, unsigned int size)
lang_hooks.lto.append_data ((const char *)data, size, NULL);
}
/* Write SIZE bytes starting at DATA to the assembler. */
void
lto_write_raw_data (const void *data, unsigned int size)
{
lang_hooks.lto.append_data ((const char *)data, size, NULL);
}
/* Write all of the chars in OBS to the assembler. Recycle the blocks
in obs as this is being done. */
@ -123,10 +128,6 @@ lto_write_stream (struct lto_output_stream *obs)
if (!next_block)
num_chars -= obs->left_in_block;
/* FIXME lto: WPA mode uses an ELF function as a lang_hook to append
output data. This hook is not happy with the way that compression
blocks up output differently to the way it's blocked here. So for
now, we don't compress WPA output. */
if (compression_stream)
lto_compress_block (compression_stream, base, num_chars);
else
@ -295,6 +296,9 @@ lto_new_out_decl_state (void)
for (i = 0; i < LTO_N_DECL_STREAMS; i++)
lto_init_tree_ref_encoder (&state->streams[i]);
/* At WPA time we do not compress sections by default. */
state->compressed = !flag_wpa;
return state;
}

14
gcc/lto-streamer-out.c
View File

@ -2191,22 +2191,23 @@ copy_function_or_variable (struct symtab_node *node)
struct lto_in_decl_state *in_state;
struct lto_out_decl_state *out_state = lto_get_out_decl_state ();
lto_begin_section (section_name, !flag_wpa);
lto_begin_section (section_name, false);
free (section_name);
/* We may have renamed the declaration, e.g., a static function. */
name = lto_get_decl_name_mapping (file_data, name);
data = lto_get_section_data (file_data, LTO_section_function_body,
name, &len);
data = lto_get_raw_section_data (file_data, LTO_section_function_body,
name, &len);
gcc_assert (data);
/* Do a bit copy of the function body. */
lto_write_data (data, len);
lto_write_raw_data (data, len);
/* Copy decls. */
in_state =
lto_get_function_in_decl_state (node->lto_file_data, function);
out_state->compressed = in_state->compressed;
gcc_assert (in_state);
for (i = 0; i < LTO_N_DECL_STREAMS; i++)
@ -2224,8 +2225,8 @@ copy_function_or_variable (struct symtab_node *node)
encoder->trees.safe_push ((*trees)[j]);
}
lto_free_section_data (file_data, LTO_section_function_body, name,
data, len);
lto_free_raw_section_data (file_data, LTO_section_function_body, name,
data, len);
lto_end_section ();
}
@ -2431,6 +2432,7 @@ lto_output_decl_state_refs (struct output_block *ob,
decl = (state->fn_decl) ? state->fn_decl : void_type_node;
streamer_tree_cache_lookup (ob->writer_cache, decl, &ref);
gcc_assert (ref != (unsigned)-1);
ref = ref * 2 + (state->compressed ? 1 : 0);
lto_write_data (&ref, sizeof (uint32_t));
for (i = 0; i < LTO_N_DECL_STREAMS; i++)