[PATCH] Fix PR18014

[Michael Liao]

Committed in r195476. Thanks.

- Michael

On Fri, 2013-11-22 at 09:53 -0800, Nadav Rotem wrote:
> LGTM! 
> 
> On Nov 22, 2013, at 9:42 AM, Michael Liao <michael.liao at intel.com> wrote:
> 
> > Hi All,
> > 
> > The attached patch fixes PR18014 which is caused by an over optimization
> > in x86 DAG combining. To generate efficient code for BLEND, we simplify
> > the mask generation by only ensure to generate the MSB. If that mask is
> > also consumed by other non-BLEND insns, the code is broken. This patch
> > checks whether that mask is only consumed by BLEND eventually and skip
> > if it's not true.
> > 
> > Thanks for review
> > 
> > Yours
> > - Michael
> > <0001-Fix-PR18014.patch>_______________________________________________
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