[PATCH] simplify-rtx: Handle truncate of extract
Segher Boessenkool
segher@kernel.crashing.org
Mon Nov 28 21:56:00 GMT 2016
On Mon, Nov 28, 2016 at 01:56:10PM -0700, Jeff Law wrote:
> On 11/26/2016 04:19 PM, Segher Boessenkool wrote:
> >simplify_truncation changes the truncation of many operations into
> >the operation on the truncation. This patch makes this code also
> >handle extracts.
> >
> >Tested on powerpc64-linux. With this patch the rlwimi testcases work.
> >
> >Is this okay for trunk?
> The rlwimi tests? Are you referring to ppu-intrinsics or something else?
https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02672.html
> Any chance this would help 15596?
It doesn't help. To fix PR15596 we need to have bitfields handled
better before (and/or during) expand.
Thanks,
Segher
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