[llvm-commits] X86 mayfold patch.

[Michael Liao]

LGTM.

- Michael

On Wed, 2012-10-24 at 01:52 +0200, Jakub Staszak wrote:
> The attached patch allows to fold vector load if there is more than one bitcast, so in the case:
> 
>   %0 = load <8 x i16>* %dest
>   %1 = shufflevector <8 x i16> %0, <8 x i16> %in, <8 x i32> < i32 0, i32 1, i32 2, i32 3, i32 13, i32 undef, i32 14, i32 14>
>   store <8 x i16> %1, <8 x i16>* %dest
> 
> We get:
> 
>         vmovlpd (%eax), %xmm0, %xmm0
> 
> instead of
> 
>         vmovaps (%eax), %xmm1
>         vmovsd  %xmm1, %xmm0, %xmm0
> 
> No extra test-case is added. I just fixed the existing one (also it uses FileCheck now).
> 
> OK to commit?
> - Kuba
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