[PATCH] FIx PR16026

[Michael Liao]

Ping with patch reattached.

- Michael

On Fri, 2013-05-17 at 12:52 -0700, Michael Liao wrote:
> Ping.
> 
> - Michael
> 
> On Thu, 2013-05-16 at 10:57 -0700, Michael Liao wrote:
> > Hi
> > 
> > The attach patch fixes PR16026. When DAG combining from (build_vector
> > (extract_vector_elt ..) ..) to (vector_shuffle), it should be deferred
> > if one operand of build_vector has patterns of (extract_vector_elt
> > (shuffle_vector ..)), which could be simplified further.
> > 
> > Thanks for review.
> > - Michael
> > 
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> 
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