[PATCH][X86] Add target specific combine rules to fold SSE/AVX/AVX2 blend intrinsics.
nrotem at apple.com
Thu May 15 08:04:48 PDT 2014
LGTM. Thanks Andrea.
> On May 15, 2014, at 7:41, Andrea Di Biagio <andrea.dibiagio at gmail.com> wrote:
> This patch teaches the x86 backend how to fold SSE4.1/AVX/AVX2 blend
> intrinsics in the following trivial cases:
> 1) fold (blend A, A, Mask) -> A;
> 2) fold (blend A, B, <allZeros>) -> A;
> 3) fold (blend A, B, <allOnes>) -> B;
> Added two new tests to verify that the new folding rules work for all
> the optimized blend intrinsics.
> Please let me know if ok to submit.
> Andrea Di Biagio
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