[PATCH] Patched clang to emit x86 blends as shufflevectors.

[Rafael Espíndola]

Should code that is directly using the builtins themselves (like
__builtin_ia32_pblendw256) be optimized too? If so wouldn't it be
better to, for example, leave _mm256_blend_epi16 as is, remove
__builtin_ia32_pblendw256 from  BuiltinsX86.def and make it a #define
to shufflevector?

On 2 May 2014 20:55, Filipe Cabecinhas
<filcab+llvm.phabricator at gmail.com> wrote:
> Hi eli.friedman, craig.topper,
>
> Most of the clang header patch by Simon Pilgrim @ SCEE.
> Also fixed (or added) clang tests for these intrinsics.
>
> LLVM tests to make sure we get the blend instruction out of these
> shufflevectors are at http://reviews.llvm.org/D3600
>
> http://reviews.llvm.org/D3601
>
> Files:
>   lib/Headers/avx2intrin.h
>   lib/Headers/avxintrin.h
>   lib/Headers/smmintrin.h
>   test/CodeGen/avx-builtins.c
>   test/CodeGen/avx2-builtins.c
>   test/CodeGen/sse-builtins.c
>
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