diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 370ecefd273..3cab44b0ac1 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -4941,8 +4941,9 @@ bool X86TargetLowering::isCheapToSpeculateCtlz() const { return Subtarget.hasLZCNT(); } -bool X86TargetLowering::isLoadBitCastBeneficial(EVT LoadVT, - EVT BitcastVT) const { +bool X86TargetLowering::isLoadBitCastBeneficial(EVT LoadVT, EVT BitcastVT, + const SelectionDAG &DAG, + const MachineMemOperand &MMO) const { if (!Subtarget.hasAVX512() && !LoadVT.isVector() && BitcastVT.isVector() && BitcastVT.getVectorElementType() == MVT::i1) return false; @@ -4950,7 +4951,12 @@ bool X86TargetLowering::isLoadBitCastBeneficial(EVT LoadVT, if (!Subtarget.hasDQI() && BitcastVT == MVT::v8i1 && LoadVT == MVT::i8) return false; - return TargetLowering::isLoadBitCastBeneficial(LoadVT, BitcastVT); + // If both types are legal vectors, it's always ok to convert them. + if (LoadVT.isVector() && BitcastVT.isVector() && + isTypeLegal(LoadVT) && isTypeLegal(BitcastVT)) + return true; + + return TargetLowering::isLoadBitCastBeneficial(LoadVT, BitcastVT, DAG, MMO); } bool X86TargetLowering::canMergeStoresTo(unsigned AddressSpace, EVT MemVT, |
