[PATCH] simplify-rtx: Handle truncate of extract

[Segher Boessenkool]

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.

> I'm OK with this for the trunk.  The questions above are more for the 
> historical record, not objections to the patch itself.

I once again forgot the changelog.  I checked it in with this:


2016-11-28  Segher Boessenkool  <segher@kernel.crashing.org>

	* simplify-rtx.c (simplify_truncation): Handle truncate of zero_extract
	and sign_extract.