2015-12-10  Richard Biener  <rguenther@suse.de>

	* tree-if-conv.c: Include params.h.
	(ifcvt_memrefs_wont_trap): Use PARAM_ALLOW_STORE_DATA_RACES
	instead of flag_tree_loop_if_convert_stores to guard cases
	we'd introduce store-data-races.

From-SVN: r231495