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Implement fixme's by memoizing nodes.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22018 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-14 07:42:29 +00:00
parent 6765bfed31
commit 385328ce41
1 changed files with 21 additions and 9 deletions
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30
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -257,7 +257,12 @@ void SelectionDAG::DeleteNodeIfDead(SDNode *N, void *NodeSet) {
BinaryOps.erase(std::make_pair(N->getOpcode(),
std::make_pair(N->getOperand(0),
N->getOperand(1))));
else {
else if (N->getNumValues() == 1) {
std::vector<SDOperand> Ops(N->op_begin(), N->op_end());
OneResultNodes.erase(std::make_pair(N->getOpcode(),
std::make_pair(N->getValueType(0),
Ops)));
} else {
// Remove the node from the ArbitraryNodes map.
std::vector<MVT::ValueType> RV(N->value_begin(), N->value_end());
std::vector<SDOperand> Ops(N->op_begin(), N->op_end());
@ -1249,7 +1254,6 @@ SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand N1, SDOperand N2, SDOperand N3) {
assert(Opcode != ISD::STORE && "Store shouldn't use this anymore");
// Perform various simplifications.
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
@ -1349,9 +1353,18 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
break;
}
SDNode *N = new SDNode(Opcode, N1, N2, N3);
std::vector<SDOperand> Ops;
Ops.reserve(3);
Ops.push_back(N1);
Ops.push_back(N2);
Ops.push_back(N3);
// Memoize nodes.
SDNode *&N = OneResultNodes[std::make_pair(Opcode, std::make_pair(VT, Ops))];
if (N) return SDOperand(N, 0);
N = new SDNode(Opcode, N1, N2, N3);
N->setValueTypes(VT);
// FIXME: memoize NODES
AllNodes.push_back(N);
return SDOperand(N, 0);
}
@ -1391,9 +1404,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(Ops[1].Val);
switch (Opcode) {
case ISD::ADD_PARTS:
case ISD::SUB_PARTS:
assert(0 && "Shouldn't be here, should set multiple retvals");
default: break;
case ISD::BRCONDTWOWAY:
if (N1C)
@ -1404,8 +1414,10 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
break;
}
// FIXME: MEMOIZE!!
SDNode *N = new SDNode(Opcode, Ops);
// Memoize nodes.
SDNode *&N = OneResultNodes[std::make_pair(Opcode, std::make_pair(VT, Ops))];
if (N) return SDOperand(N, 0);
N = new SDNode(Opcode, Ops);
N->setValueTypes(VT);
AllNodes.push_back(N);
return SDOperand(N, 0);