> 2012-01-25 Jakub Jelinek
>
> PR rtl-optimization/51978
> * ree.c (make_defs_and_copies_lists): Change set_pat type
> to const_rtx.
> (combine_reaching_defs): Likewise.
> (struct re_info): Remove.
> (add_removable_extension): Remove x and data arguments,
>
Hi!
On powerpc64-linux the ext-elim-1.c testcase started failing,
becuase we have there an insn with a sign (or was it zero?) extension
in a parallel with setting flags. Via note_stores it happily accepts
the insn as an candidate, but later on assumes the sign extension
must be right in the insn
