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Minimize clone counter memory usage in LTO.

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gcc/lto:

	* lto-partition.c (privatize_symbol_name_1): Keep track of
	non-unique symbol counters in the lto_clone_numbers hash
	map.
	(lto_promote_cross_file_statics): Allocate and free the
	lto_clone_numbers hash map.
	(lto_promote_statics_nonwpa): Free the lto_clone_numbers hash
	map.

From-SVN: r266693
This commit is contained in:
Michael Ploujnikov 2018-11-30 22:31:02 +00:00 committed by Michael Ploujnikov
parent 53aedcce09
commit ed1b53a0ab
2 changed files with 24 additions and 2 deletions
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11
gcc/lto/ChangeLog
View File

@ -1,3 +1,14 @@
2018-11-30 Michael Ploujnikov <michael.ploujnikov@oracle.com>
Minimize clone counter memory usage in LTO.
* lto-partition.c (privatize_symbol_name_1): Keep track of
non-unique symbol counters in the lto_clone_numbers hash
map.
(lto_promote_cross_file_statics): Allocate and free the
lto_clone_numbers hash map.
(lto_promote_statics_nonwpa): Free the lto_clone_numbers hash
map.
2018-11-28 Jan Hubicka <jh@suse.cz>
* lto.c (lto_read_decls): Fix handling of INTEGER_CST.

15
gcc/lto/lto-partition.c
View File

@ -951,6 +951,9 @@ validize_symbol_for_target (symtab_node *node)
}
}
/* Maps symbol names to unique lto clone counters. */
static hash_map<const char *, unsigned> *lto_clone_numbers;
/* Helper for privatize_symbol_name. Mangle NODE symbol name
represented by DECL. */
@ -963,9 +966,11 @@ privatize_symbol_name_1 (symtab_node *node, tree decl)
return false;
name = maybe_rewrite_identifier (name);
unsigned &clone_number = lto_clone_numbers->get_or_insert (name);
symtab->change_decl_assembler_name (decl,
clone_function_name_numbered (
name, "lto_priv"));
clone_function_name (
name, "lto_priv", clone_number));
clone_number++;
if (node->lto_file_data)
lto_record_renamed_decl (node->lto_file_data, name,
@ -1157,6 +1162,8 @@ lto_promote_cross_file_statics (void)
part->encoder = compute_ltrans_boundary (part->encoder);
}
lto_clone_numbers = new hash_map<const char *, unsigned>;
/* Look at boundaries and promote symbols as needed. */
for (i = 0; i < n_sets; i++)
{
@ -1187,6 +1194,7 @@ lto_promote_cross_file_statics (void)
promote_symbol (node);
}
}
delete lto_clone_numbers;
}
/* Rename statics in the whole unit in the case that
@ -1196,9 +1204,12 @@ void
lto_promote_statics_nonwpa (void)
{
symtab_node *node;
lto_clone_numbers = new hash_map<const char *, unsigned>;
FOR_EACH_SYMBOL (node)
{
rename_statics (NULL, node);
validize_symbol_for_target (node);
}
delete lto_clone_numbers;
}