DebugLoc dl = N->getDebugLoc();
GetSplitDestVTs(N->getValueType(0), LoVT, HiVT);
- // Split the input.
+ // If the input also splits, handle it directly for a compile time speedup.
+ // Otherwise split it by hand.
EVT InVT = N->getOperand(0).getValueType();
- switch (getTypeAction(InVT)) {
- default: llvm_unreachable("Unexpected type action!");
- case TargetLowering::TypeLegal: {
+ if (getTypeAction(InVT) == TargetLowering::TypeSplitVector) {
+ GetSplitVector(N->getOperand(0), Lo, Hi);
+ } else {
EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
LoVT.getVectorNumElements());
Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, N->getOperand(0),
DAG.getIntPtrConstant(0));
Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, N->getOperand(0),
DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
- break;
- }
- case TargetLowering::TypePromoteInteger: {
- SDValue InOp;
- if (N->getOpcode() == ISD::SIGN_EXTEND ||
- N->getOpcode() == ISD::SINT_TO_FP) {
- InOp = SExtPromotedInteger(N->getOperand(0));
- } else if (
- N->getOpcode() == ISD::ZERO_EXTEND ||
- N->getOpcode() == ISD::UINT_TO_FP) {
- InOp = ZExtPromotedInteger(N->getOperand(0));
- } else {
- InOp = GetPromotedInteger(N->getOperand(0));
- }
- EVT InNVT = EVT::getVectorVT(*DAG.getContext(),
- InOp.getValueType().getVectorElementType(),
- LoVT.getVectorNumElements());
- Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getIntPtrConstant(0));
- Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
- break;
- }
- case TargetLowering::TypeSplitVector:
- GetSplitVector(N->getOperand(0), Lo, Hi);
- break;
- case TargetLowering::TypeWidenVector: {
- // If the result needs to be split and the input needs to be widened,
- // the two types must have different lengths. Use the widened result
- // and extract from it to do the split.
- SDValue InOp = GetWidenedVector(N->getOperand(0));
- EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
- LoVT.getVectorNumElements());
- Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getIntPtrConstant(0));
- Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, InOp,
- DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
- break;
- }
}
if (N->getOpcode() == ISD::FP_ROUND) {