re PR tree-optimization/78218 (wrong code at -Os and above on x86_64-linux-gnu (in both 32-bit and 64-bit modes))

2016-11-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78218
	* gimple-ssa-store-merging.c
	(pass_store_merging::terminate_all_aliasing_chains):
	Drop unused argument, fix alias check to also consider uses.
	(pass_store_merging::execute): Adjust.

	* gcc.dg/torture/pr78218.c: New testcase.

From-SVN: r241900