* rtl.h (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE

	* rtl.h (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
	from 3 x MAX_MACHINE_MODE.
	(CONSTM1_RTX): Define.
	* emit-rtl.c (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
        from 3 x MAX_MACHINE_MODE.
	(gen_rtx_CONST_VECTOR): Use CONSTM1_RTX if all inner constants are
	CONSTM1_RTX.
	(init_emit_once): Initialize CONSTM1_RTX for MODE_INT and
	MODE_VECTOR_INT modes.
	* simplify-rtx.c (simplify_binary_operation_1) <case IOR, XOR, AND>:
	Optimize if one operand is CONSTM1_RTX.
	* config/i386/i386.c (ix86_expand_sse_movcc): Optimize mask ? -1 : x
	into mask | x.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@179238 138bc75d-0d04-0410-961f-82ee72b054a4