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Added basic support for expanding VSETCC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60974 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mon P Wang 2008-12-13 08:15:14 +00:00
parent 879922932f
commit e1a0b2e0bb
1 changed files with 21 additions and 2 deletions
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23
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -3126,6 +3126,25 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
Tmp1 = TLI.LowerOperation(Result, DAG);
if (Tmp1.getNode()) Result = Tmp1;
break;
case TargetLowering::Expand: {
// Unroll into a nasty set of scalar code for now.
MVT VT = Node->getValueType(0);
unsigned NumElems = VT.getVectorNumElements();
MVT EltVT = VT.getVectorElementType();
MVT TmpEltVT = Tmp1.getValueType().getVectorElementType();
SmallVector<SDValue, 8> Ops(NumElems);
for (unsigned i = 0; i < NumElems; ++i) {
SDValue In1 = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, TmpEltVT,
Tmp1, DAG.getIntPtrConstant(i));
Ops[i] = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(In1), In1,
DAG.getNode(ISD::EXTRACT_VECTOR_ELT, TmpEltVT,
Tmp2, DAG.getIntPtrConstant(i)),
CC);
Ops[i] = DAG.getNode(ISD::SIGN_EXTEND, EltVT, Ops[i]);
}
Result = DAG.getNode(ISD::BUILD_VECTOR, VT, &Ops[0], NumElems);
break;
}
}
break;
}
@ -3204,7 +3223,7 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
Node->getOpcode() == ISD::SRA) &&
!Node->getValueType(0).isVector()) {
Tmp2 = LegalizeShiftAmount(Tmp2);
}
}
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2);
@ -8002,7 +8021,7 @@ SDValue SelectionDAGLegalize::WidenVectorOp(SDValue Op, MVT WidenVT) {
NewOps.push_back(PermOp.getOperand(i));
} else {
unsigned Idx =
cast<ConstantSDNode>(PermOp.getOperand(i))->getZExtValue();
cast<ConstantSDNode>(PermOp.getOperand(i))->getZExtValue();
if (Idx < NumElts) {
NewOps.push_back(PermOp.getOperand(i));
}