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author	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Mon, 23 May 2011 12:08:41 +0000 (12:08 +0000)
committer	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Mon, 23 May 2011 12:08:41 +0000 (12:08 +0000)
commit	e54d36c4826a4f567945ac4a962618bb9286d06b
tree	517ad43ddd93528a11fead28a4b00d0da1d17b8b	tree \| snapshot
parent	e07c78988b44769673b7b1d58058479d467da2f6	commit \| diff

2011-05-23 Richard Guenther <rguenther@suse.de>

PR tree-optimization/49115
* tree-ssa-alias.c (stmt_kills_ref_p_1): If the assignment
is not necessarily carried out, do not claim it kills the ref.
* tree-ssa-dce.c (mark_aliased_reaching_defs_necessary_1): Likewise.

* g++.dg/torture/pr49115.C: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@174066 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/ChangeLog		diff \| blob \| history
gcc/testsuite/ChangeLog		diff \| blob \| history
gcc/testsuite/g++.dg/torture/pr49115.C	[new file with mode: 0644]	blob
gcc/tree-ssa-alias.c		diff \| blob \| history
gcc/tree-ssa-dce.c		diff \| blob \| history

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