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Add a new getMergeValues method that does not need

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to be passed the list of value types, and use this
where appropriate.  Inappropriate places are where
the value type list is already known and may be
long, in which case the existing method is more
efficient.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53035 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2008-07-02 17:40:58 +00:00
parent 2c04b0da2b
commit 4bdcb61af3
9 changed files with 63 additions and 83 deletions
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30
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@@ -1158,17 +1158,13 @@ SDOperand SelectionDAGLowering::getValue(const Value *V) {
if (isa<ConstantStruct>(C) || isa<ConstantArray>(C)) {
SmallVector<SDOperand, 4> Constants;
SmallVector<MVT, 4> ValueVTs;
for (User::const_op_iterator OI = C->op_begin(), OE = C->op_end();
OI != OE; ++OI) {
SDNode *Val = getValue(*OI).Val;
for (unsigned i = 0, e = Val->getNumValues(); i != e; ++i) {
for (unsigned i = 0, e = Val->getNumValues(); i != e; ++i)
Constants.push_back(SDOperand(Val, i));
ValueVTs.push_back(Val->getValueType(i));
}
}
return DAG.getMergeValues(DAG.getVTList(&ValueVTs[0], ValueVTs.size()),
&Constants[0], Constants.size());
return DAG.getMergeValues(&Constants[0], Constants.size());
}
if (const ArrayType *ATy = dyn_cast<ArrayType>(C->getType())) {
@@ -1179,7 +1175,6 @@ SDOperand SelectionDAGLowering::getValue(const Value *V) {
return SDOperand(); // empty array
MVT EltVT = TLI.getValueType(ATy->getElementType());
SmallVector<SDOperand, 4> Constants(NumElts);
SmallVector<MVT, 4> ValueVTs(NumElts, EltVT);
for (unsigned i = 0, e = NumElts; i != e; ++i) {
if (isa<UndefValue>(C))
Constants[i] = DAG.getNode(ISD::UNDEF, EltVT);
@@ -1188,8 +1183,7 @@ SDOperand SelectionDAGLowering::getValue(const Value *V) {
else
Constants[i] = DAG.getConstant(0, EltVT);
}
return DAG.getMergeValues(DAG.getVTList(&ValueVTs[0], ValueVTs.size()),
&Constants[0], Constants.size());
return DAG.getMergeValues(&Constants[0], Constants.size());
}
if (const StructType *STy = dyn_cast<StructType>(C->getType())) {
@@ -1199,10 +1193,8 @@ SDOperand SelectionDAGLowering::getValue(const Value *V) {
if (NumElts == 0)
return SDOperand(); // empty struct
SmallVector<SDOperand, 4> Constants(NumElts);
SmallVector<MVT, 4> ValueVTs(NumElts);
for (unsigned i = 0, e = NumElts; i != e; ++i) {
MVT EltVT = TLI.getValueType(STy->getElementType(i));
ValueVTs[i] = EltVT;
if (isa<UndefValue>(C))
Constants[i] = DAG.getNode(ISD::UNDEF, EltVT);
else if (EltVT.isFloatingPoint())
@@ -1210,8 +1202,7 @@ SDOperand SelectionDAGLowering::getValue(const Value *V) {
else
Constants[i] = DAG.getConstant(0, EltVT);
}
return DAG.getMergeValues(DAG.getVTList(&ValueVTs[0], ValueVTs.size()),
&Constants[0], Constants.size());
return DAG.getMergeValues(&Constants[0], Constants.size());
}
const VectorType *VecTy = cast<VectorType>(V->getType());
@@ -3771,10 +3762,7 @@ SDOperand RegsForValue::getCopyFromRegs(SelectionDAG &DAG,
ValueVT);
Part += NumRegs;
}
if (ValueVTs.size() == 1)
return Values[0];
return DAG.getMergeValues(DAG.getVTList(&ValueVTs[0], ValueVTs.size()),
&Values[0], ValueVTs.size());
}
@@ -4944,13 +4932,7 @@ LowerArguments(BasicBlock *LLVMBB, SelectionDAGLowering &SDL) {
ComputeValueVTs(TLI, AI->getType(), ValueVTs);
unsigned NumValues = ValueVTs.size();
if (!AI->use_empty()) {
SmallVector<MVT, 4> LegalValueVTs(NumValues);
for (unsigned VI = 0; VI != NumValues; ++VI)
LegalValueVTs[VI] = Args[a + VI].getValueType();
SDL.setValue(AI,
SDL.DAG.getMergeValues(SDL.DAG.getVTList(&LegalValueVTs[0],
NumValues),
&Args[a], NumValues));
SDL.setValue(AI, SDL.DAG.getMergeValues(&Args[a], NumValues));
// If this argument is live outside of the entry block, insert a copy from
// whereever we got it to the vreg that other BB's will reference it as.
DenseMap<const Value*, unsigned>::iterator VMI=FuncInfo.ValueMap.find(AI);