* reload1.c (inherit_piecemeal_p): New function.

	(emit_reload_insns): When reloading a group of hard registers, use
	inherit_piecemeal_p to decide whether the values of individual hard
	registers can be inherited.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81480 138bc75d-0d04-0410-961f-82ee72b054a4