diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 43e84b396e6..fdf7d1b41f4 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -37296,6 +37296,18 @@ static SDValue combineStore(SDNode *N, SelectionDAG &DAG, SDValue StoredVal = St->getOperand(1); const TargetLowering &TLI = DAG.getTargetLoweringInfo(); + // Convert a store of vXi1 into a store of iX and a bitcast. + if (!Subtarget.hasAVX512() && VT == StVT && VT.isVector() && + VT.getVectorElementType() == MVT::i1) { + + EVT NewVT = EVT::getIntegerVT(*DAG.getContext(), VT.getVectorNumElements()); + StoredVal = DAG.getBitcast(NewVT, StoredVal); + + return DAG.getStore(St->getChain(), dl, StoredVal, St->getBasePtr(), + St->getPointerInfo(), St->getAlignment(), + St->getMemOperand()->getFlags()); + } + // If this is a store of a scalar_to_vector to v1i1, just use a scalar store. // This will avoid a copy to k-register. if (VT == MVT::v1i1 && VT == StVT && Subtarget.hasAVX512() && |
