PR rtl-optimization/64316
	* simplify-rtx.c (simplify_relational_operation_1): For
	(eq/ne (and x y) x) and (eq/ne (and x y) y) optimizations use
	CONST0_RTX instead of const0_rtx.

	* gcc.dg/pr64316.c: New test.

From-SVN: r218762