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Do not memoize ADJCALLSTACKDOWN nodes, provide a method to hack on them.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21871 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-11 18:57:39 +00:00
parent 16ce0df927
commit 27e9b41464
1 changed files with 24 additions and 3 deletions
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27
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -1192,9 +1192,17 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
#endif
}
SDNode *&N = BinaryOps[std::make_pair(Opcode, std::make_pair(N1, N2))];
if (N) return SDOperand(N, 0);
N = new SDNode(Opcode, N1, N2);
// Memoize this node if possible.
SDNode *N;
if (Opcode != ISD::ADJCALLSTACKDOWN) {
SDNode *&BON = BinaryOps[std::make_pair(Opcode, std::make_pair(N1, N2))];
if (BON) return SDOperand(BON, 0);
BON = N = new SDNode(Opcode, N1, N2);
} else {
N = new SDNode(ISD::ADJCALLSTACKDOWN, N1, N2);
}
if (Opcode != ISD::READPORT && Opcode != ISD::READIO)
N->setValueTypes(VT);
@ -1205,6 +1213,19 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
return SDOperand(N, 0);
}
// setAdjCallChain - This method changes the token chain of an ADJCALLSTACKDOWN
// node to be the specified operand.
void SDNode::setAdjCallChain(SDOperand N) {
assert(N.getValueType() == MVT::Other);
assert(getOpcode() == ISD::ADJCALLSTACKDOWN && "Cannot adjust this node!");
Operands[0].Val->removeUser(this);
Operands[0] = N;
N.Val->Uses.push_back(this);
}
SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr,
SDOperand SV) {