[PATCH] Fix PR18054

[Michael Liao]

Committed in r195779.

Thanks
- Michael

On Tue, 2013-11-26 at 12:32 -0800, Nadav Rotem wrote:
> LGTM. 
> 
> On Nov 26, 2013, at 11:46 AM, Michael Liao <michael.liao at intel.com> wrote:
> 
> > Kindly ping with patch reattached. - Michael
> > 
> > On Mon, 2013-11-25 at 01:29 -0800, Michael Liao wrote:
> >> Hi All,
> >> 
> >> The attached patch fixed PR18054 which is caused by a bug in X86
> >> sign_extend_inreg lowering. Extra checking the in-reg type is needed as
> >> (vsext x) is only when x is a vector type of i8, i16, or i32. If x is a
> >> vector type of i1, is not valid to use (vsext x) alone.
> >> 
> >> Thanks for review
> >> - Michael
> >> 
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> > 
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