cse.c: Use HOST_WIDE_INT_M1 instead of ~(HOST_WIDE_INT) 0.

cse.c: Use HOST_WIDE_INT_M1 instead of ~(HOST_WIDE_INT) 0.

	* cse.c: Use HOST_WIDE_INT_M1 instead of ~(HOST_WIDE_INT) 0.
	* combine.c: Use HOST_WIDE_INT_M1U instead of
	~(unsigned HOST_WIDE_INT) 0.
	* double-int.h: Ditto.
	* dse.c: Ditto.
	* dwarf2asm.c:Ditto.
	* expmed.c: Ditto.
	* genmodes.c: Ditto.
	* match.pd: Ditto.
	* read-rtl.c: Ditto.
	* tree-ssa-loop-ivopts.c: Ditto.
	* tree-ssa-loop-prefetch.c: Ditto.
	* tree-vect-generic.c: Ditto.
	* tree-vect-patterns.c: Ditto.
	* tree.c: Ditto.

From-SVN: r238529