[PATCH] D79148: [X86][CostModel] Bump the cost of vpermw/vpermt2b/vperm2w

[Craig Topper via Phabricator via llvm-commits]

craig.topper marked an inline comment as done.
craig.topper added inline comments.


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Comment at: llvm/lib/Target/X86/X86TargetTransformInfo.cpp:1092
-      {TTI::SK_PermuteSingleSrc, MVT::v16i16, 1}, // vpermw
-      {TTI::SK_PermuteSingleSrc, MVT::v8i16, 1},  // vpermw
       {TTI::SK_PermuteSingleSrc, MVT::v64i8, 8},  // extend to v32i16
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We would just use pshufb for v8i16.


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  https://reviews.llvm.org/D79148/new/

https://reviews.llvm.org/D79148