Fix PR64876, regressions in powerpc64 Go testsuite

[Jakub Jelinek]

On Thu, Feb 05, 2015 at 02:09:54PM +1030, Alan Modra wrote:
> Jakub, was your suggestion to use get_last_insn_anywhere() based on
> not wanting to expose details that should be internal to
> emit-rtl.[ch]?

Yes.  But if it doesn't work for what you want, either add a new accessor or
use it directly.

	Jakub