2015-06-29  Richard Biener  <rguenther@suse.de>

	* genmatch.c (add_operator): Treat ADDR_EXPR as atom.
	* fold-const.c (fold_binary_loc): Move &A - &B simplification
	via ptr_difference_const ...
	* match.pd: ... here.
	When matching (X ^ Y) == Y also match with swapped operands.

From-SVN: r225115