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make sure to remove a node from the use list of its operands when we replace

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it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22820 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-17 01:54:00 +00:00
parent 6d9aed4f8f
commit b467f8af41
1 changed files with 8 additions and 1 deletions
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9
include/llvm/CodeGen/SelectionDAGNodes.h
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@ -614,7 +614,14 @@ protected:
void MorphNodeTo(unsigned Opc) { void MorphNodeTo(unsigned Opc) {
NodeType = Opc; NodeType = Opc;
Values.clear(); Values.clear();
Operands.clear();
// Clear the operands list, updating used nodes to remove this from their
// use list.
while (!Operands.empty()) {
SDNode *O = Operands.back().Val;
Operands.pop_back();
O->removeUser(this);
}
} }
void setValueTypes(MVT::ValueType VT) { void setValueTypes(MVT::ValueType VT) {