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Remove more non-DebugLoc getNode variants. Use

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getCALLSEQ_{END,START} to permit passing no DebugLoc
there.  UNDEF doesn't logically have DebugLoc; add
getUNDEF to encapsulate this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2009-02-06 23:05:02 +00:00
parent e72c5964d5
commit e8d7230f48
14 changed files with 154 additions and 189 deletions
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28
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@@ -2490,7 +2490,7 @@ SDValue DAGCombiner::visitSHL(SDNode *N) {
return N0;
// fold (shl x, c >= size(x)) -> undef
if (N1C && N1C->getZExtValue() >= OpSizeInBits)
return DAG.getNode(ISD::UNDEF, N->getDebugLoc(), VT);
return DAG.getUNDEF(VT);
// fold (shl x, 0) -> x
if (N1C && N1C->isNullValue())
return N0;
@@ -2571,7 +2571,7 @@ SDValue DAGCombiner::visitSRA(SDNode *N) {
return N0;
// fold (sra x, (setge c, size(x))) -> undef
if (N1C && N1C->getZExtValue() >= VT.getSizeInBits())
return DAG.getNode(ISD::UNDEF, N->getDebugLoc(), VT);
return DAG.getUNDEF(VT);
// fold (sra x, 0) -> x
if (N1C && N1C->isNullValue())
return N0;
@@ -2679,7 +2679,7 @@ SDValue DAGCombiner::visitSRL(SDNode *N) {
return N0;
// fold (srl x, c >= size(x)) -> undef
if (N1C && N1C->getZExtValue() >= OpSizeInBits)
return DAG.getNode(ISD::UNDEF, N->getDebugLoc(), VT);
return DAG.getUNDEF(VT);
// fold (srl x, 0) -> x
if (N1C && N1C->isNullValue())
return N0;
@@ -2704,7 +2704,7 @@ SDValue DAGCombiner::visitSRL(SDNode *N) {
// Shifting in all undef bits?
MVT SmallVT = N0.getOperand(0).getValueType();
if (N1C->getZExtValue() >= SmallVT.getSizeInBits())
return DAG.getNode(ISD::UNDEF, N->getDebugLoc(), VT);
return DAG.getUNDEF(VT);
SDValue SmallShift = DAG.getNode(ISD::SRL, N0.getDebugLoc(), SmallVT,
N0.getOperand(0), N1);
@@ -3909,7 +3909,7 @@ ConstantFoldBIT_CONVERTofBUILD_VECTOR(SDNode *BV, MVT DstEltVT) {
}
if (EltIsUndef)
Ops.push_back(DAG.getNode(ISD::UNDEF, BV->getDebugLoc(), DstEltVT));
Ops.push_back(DAG.getUNDEF(DstEltVT));
else
Ops.push_back(DAG.getConstant(NewBits, DstEltVT));
}
@@ -3929,7 +3929,7 @@ ConstantFoldBIT_CONVERTofBUILD_VECTOR(SDNode *BV, MVT DstEltVT) {
for (unsigned i = 0, e = BV->getNumOperands(); i != e; ++i) {
if (BV->getOperand(i).getOpcode() == ISD::UNDEF) {
for (unsigned j = 0; j != NumOutputsPerInput; ++j)
Ops.push_back(DAG.getNode(ISD::UNDEF, BV->getDebugLoc(), DstEltVT));
Ops.push_back(DAG.getUNDEF(DstEltVT));
continue;
}
@@ -4810,16 +4810,14 @@ SDValue DAGCombiner::visitLOAD(SDNode *N) {
// Indexed loads.
assert(N->getValueType(2) == MVT::Other && "Malformed indexed loads?");
if (N->hasNUsesOfValue(0, 0) && N->hasNUsesOfValue(0, 1)) {
SDValue Undef = DAG.getNode(ISD::UNDEF, N->getDebugLoc(),
N->getValueType(0));
SDValue Undef = DAG.getUNDEF(N->getValueType(0));
DOUT << "\nReplacing.6 "; DEBUG(N->dump(&DAG));
DOUT << "\nWith: "; DEBUG(Undef.getNode()->dump(&DAG));
DOUT << " and 2 other values\n";
WorkListRemover DeadNodes(*this);
DAG.ReplaceAllUsesOfValueWith(SDValue(N, 0), Undef, &DeadNodes);
DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1),
DAG.getNode(ISD::UNDEF, N->getDebugLoc(),
N->getValueType(1)),
DAG.getUNDEF(N->getValueType(1)),
&DeadNodes);
DAG.ReplaceAllUsesOfValueWith(SDValue(N, 2), Chain, &DeadNodes);
removeFromWorkList(N);
@@ -5240,9 +5238,7 @@ SDValue DAGCombiner::visitBUILD_VECTOR(SDNode *N) {
SmallVector<SDValue, 8> BuildVecIndices;
for (unsigned i = 0; i != NumInScalars; ++i) {
if (N->getOperand(i).getOpcode() == ISD::UNDEF) {
BuildVecIndices.push_back(DAG.getNode(ISD::UNDEF,
N->getDebugLoc(),
TLI.getPointerTy()));
BuildVecIndices.push_back(DAG.getUNDEF(TLI.getPointerTy()));
continue;
}
@@ -5273,8 +5269,7 @@ SDValue DAGCombiner::visitBUILD_VECTOR(SDNode *N) {
} else {
// Use an undef build_vector as input for the second operand.
std::vector<SDValue> UnOps(NumInScalars,
DAG.getNode(ISD::UNDEF, N->getDebugLoc(),
EltType));
DAG.getUNDEF(EltType));
Ops[1] = DAG.getNode(ISD::BUILD_VECTOR, N->getDebugLoc(), VT,
&UnOps[0], UnOps.size());
AddToWorkList(Ops[1].getNode());
@@ -5430,8 +5425,7 @@ SDValue DAGCombiner::visitVECTOR_SHUFFLE(SDNode *N) {
AddToWorkList(ShufMask.getNode());
return DAG.getNode(ISD::VECTOR_SHUFFLE, N->getDebugLoc(),
N->getValueType(0), N0,
DAG.getNode(ISD::UNDEF, N->getDebugLoc(),
N->getValueType(0)),
DAG.getUNDEF(N->getValueType(0)),
ShufMask);
}