emit-rtl.c (gen_lowpart): When requesting the low-part of a MEM...

emit-rtl.c (gen_lowpart): When requesting the low-part of a MEM...

	* emit-rtl.c (gen_lowpart): When requesting the low-part of a
	MEM, try loading the MEM into a register and taking the low-part
	of that, to help CSE see the use of the MEM in its true mode.

From-SVN: r63907