http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50582
--- Comment #3 from Paulo J. Matos <Paulo.Matos at csr dot com> 2011-10-05 10:53:06 UTC --- Created attachment 25420 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25420 Allows reload to remove trivial insn I noticed that reload was failing to remove insn of the form: (parallel [(set rX rX) (clobber RCC)]) Attached is a patch that does this. Removes move instructions whose clobber, clobbers registers defined in NOT_REALLY_HARD_REG.