match.pd: Implement missed optimization ((x ^ y) & z) | x -> (z & y) | x [PR109938]

Adds a simplification for ((x ^ y) & z) | x to be folded into
(z & y) | x. Merges this simplification with ((x | y) & z) | x -> (z & y) | x
to prevent duplicate pattern.

2023-08-11  Drew Ross  <drross@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/109938
	* match.pd (((x ^ y) & z) | x -> (z & y) | x): New simplification.

	* gcc.c-torture/execute/pr109938.c: New test.
	* gcc.dg/tree-ssa/pr109938.c: New test.