diff options
Diffstat (limited to 'llvm/lib/CodeGen/TargetLoweringBase.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TargetLoweringBase.cpp | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp index 982e3185467..b9d67389145 100644 --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp @@ -1282,21 +1282,33 @@ void TargetLoweringBase::computeRegisterProperties( LLVM_FALLTHROUGH; case TypeWidenVector: - // Try to widen the vector. - for (unsigned nVT = i + 1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) { - MVT SVT = (MVT::SimpleValueType) nVT; - if (SVT.getVectorElementType() == EltVT - && SVT.getVectorNumElements() > NElts && isTypeLegal(SVT)) { - TransformToType[i] = SVT; - RegisterTypeForVT[i] = SVT; - NumRegistersForVT[i] = 1; + if (isPowerOf2_32(NElts)) { + // Try to widen the vector. + for (unsigned nVT = i + 1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) { + MVT SVT = (MVT::SimpleValueType) nVT; + if (SVT.getVectorElementType() == EltVT + && SVT.getVectorNumElements() > NElts && isTypeLegal(SVT)) { + TransformToType[i] = SVT; + RegisterTypeForVT[i] = SVT; + NumRegistersForVT[i] = 1; + ValueTypeActions.setTypeAction(VT, TypeWidenVector); + IsLegalWiderType = true; + break; + } + } + if (IsLegalWiderType) + break; + } else { + // Only widen to the next power of 2 to keep consistency with EVT. + MVT NVT = VT.getPow2VectorType(); + if (isTypeLegal(NVT)) { + TransformToType[i] = NVT; ValueTypeActions.setTypeAction(VT, TypeWidenVector); - IsLegalWiderType = true; + RegisterTypeForVT[i] = NVT; + NumRegistersForVT[i] = 1; break; } } - if (IsLegalWiderType) - break; LLVM_FALLTHROUGH; case TypeSplitVector: |
