[PATCH] [X86] replace vextractf128 intrinsics with generic shuffles (LLVM)

[Sanjay Patel]

In http://reviews.llvm.org/D8276#139537, @craig.topper wrote:

> LGTM
>
> Are you going to do the AVX2 version of these too?


Yes, I'm planning to fix up as many of these as possible. Simon may have some similar patches to commit as well.


http://reviews.llvm.org/D8276

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