r244791 - in /trunk/gcc: ChangeLog asan.c asan....

[marxin@gcc.gnu.org]

Author: marxin
Date: Mon Jan 23 12:02:13 2017
New Revision: 244791

URL: https://gcc.gnu.org/viewcvs?rev=244791&root=gcc&view=rev
Log:
Speed up use-after-scope (v2): rewrite into SSA

2017-01-23  Martin Liska  <mliska@suse.cz>

	* asan.c (create_asan_shadow_var): New function.
	(asan_expand_poison_ifn): Likewise.
	* asan.h (asan_expand_poison_ifn): New declaration.
	* internal-fn.c (expand_ASAN_POISON): Likewise.
	* internal-fn.def (ASAN_POISON): New builtin.
	* sanopt.c (pass_sanopt::execute): Expand
	asan_expand_poison_ifn.
	* tree-inline.c (copy_decl_for_dup_finish): Make function
	external.
	* tree-inline.h (copy_decl_for_dup_finish): Likewise.
	* tree-ssa.c (is_asan_mark_p): New function.
	(execute_update_addresses_taken): Rewrite local variables
	(identified just by use-after-scope as addressable) into SSA.
2017-01-23  Martin Liska  <mliska@suse.cz>

	* gcc.dg/asan/use-after-scope-3.c: Add additional flags.
	* gcc.dg/asan/use-after-scope-9.c: Likewise and grep for
	sanopt optimization for ASAN_POISON.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/asan.c
    trunk/gcc/asan.h
    trunk/gcc/internal-fn.c
    trunk/gcc/internal-fn.def
    trunk/gcc/sanopt.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/asan/use-after-scope-3.c
    trunk/gcc/testsuite/gcc.dg/asan/use-after-scope-9.c
    trunk/gcc/tree-inline.c
    trunk/gcc/tree-inline.h
    trunk/gcc/tree-ssa.c