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avoid temporary CallbackVH's.

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llvm-svn: 92218
This commit is contained in:
Chris Lattner 2009-12-28 09:10:16 +00:00
parent 14d3bc91c4
commit 2cfabb2151
1 changed files with 8 additions and 4 deletions
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12
lib/VMCore/Metadata.cpp
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@ -64,6 +64,11 @@ public:
MDNodeElement(Value *V, MDNode *P) : CallbackVH(V), Parent(P) {}
~MDNodeElement() {}
void set(Value *V, MDNode *P) {
setValPtr(V);
Parent = P;
}
virtual void deleted();
virtual void allUsesReplacedWith(Value *NV);
};
@ -91,7 +96,7 @@ MDNode::MDNode(LLVMContext &C, Value *const *Vals, unsigned NumVals,
Operands = new MDNodeElement[NumOperands];
MDNodeElement *Ptr = Operands;
for (unsigned i = 0; i != NumVals; ++i)
Ptr[i] = MDNodeElement(Vals[i], this);
Ptr[i].set(Vals[i], this);
if (isFunctionLocal)
SubclassData |= FunctionLocalBit;
@ -161,9 +166,8 @@ void MDNode::replaceElement(Value *From, Value *To) {
// Replace From element(s) in place.
for (SmallVector<unsigned, 4>::iterator I = Indexes.begin(), E = Indexes.end();
I != E; ++I) {
Operands[*I] = MDNodeElement(To, this);
}
I != E; ++I)
Operands[*I].set(To, this);
// Insert updated "this" into the context's folding node set.
// If a node with same element list already exist then before inserting