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Cherry pick bug fix #133

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Dec 18, 2018
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Cherry pick bug fix #133

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2 changes: 1 addition & 1 deletion lib/Target/X86/X86TargetTransformInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -874,7 +874,7 @@ int X86TTIImpl::getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index,

// Subvector extractions are free if they start at beginning of the
// vector.
if (Kind == TTI::SK_ExtractSubvector &&
if (Kind == TTI::SK_ExtractSubvector && LT.second.isVector() &&
((Index % LT.second.getVectorNumElements()) == 0))
return 0;

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