diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 6772d96c799..28c5d0449c8 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -2478,6 +2478,9 @@ bool X86TTIImpl::isLSRCostLess(TargetTransformInfo::LSRCost &C1, } bool X86TTIImpl::isLegalMaskedLoad(Type *DataTy) { + // The backend can't handle a single element vector. + if (isa<VectorType>(DataTy) && DataTy->getVectorNumElements() == 1) + return false; Type *ScalarTy = DataTy->getScalarType(); int DataWidth = isa<PointerType>(ScalarTy) ? DL.getPointerSizeInBits() : ScalarTy->getPrimitiveSizeInBits(); @@ -2501,8 +2504,13 @@ bool X86TTIImpl::isLegalMaskedGather(Type *DataTy) { // the vector type. // The Scalarizer asks again about legality. It sends a vector type. // In this case we can reject non-power-of-2 vectors. - if (isa<VectorType>(DataTy) && !isPowerOf2_32(DataTy->getVectorNumElements())) - return false; + // We also reject single element vectors as the type legalizer can't + // scalarize it. + if (isa<VectorType>(DataTy)) { + unsigned NumElts = DataTy->getVectorNumElements(); + if (NumElts == 1 || !isPowerOf2_32(NumElts)) + return false; + } Type *ScalarTy = DataTy->getScalarType(); int DataWidth = isa<PointerType>(ScalarTy) ? DL.getPointerSizeInBits() : ScalarTy->getPrimitiveSizeInBits(); |
