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Derive metadata hierarchy from Value instead of User.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84801 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-10-21 23:57:35 +00:00
parent 857eb5793e
commit 49708ad993
7 changed files with 10 additions and 139 deletions
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lib/VMCore/LLVMContext.cpp
-26
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@@ -45,32 +45,6 @@ GetElementPtrConstantExpr::GetElementPtrConstantExpr
OperandList[i+1] = IdxList[i];
}
bool LLVMContext::RemoveDeadMetadata() {
std::vector<WeakVH> DeadMDNodes;
bool Changed = false;
while (1) {
for (FoldingSet<MDNode>::iterator
I = pImpl->MDNodeSet.begin(),
E = pImpl->MDNodeSet.end(); I != E; ++I) {
MDNode *N = &(*I);
if (N->use_empty())
DeadMDNodes.push_back(WeakVH(N));
}
if (DeadMDNodes.empty())
return Changed;
while (!DeadMDNodes.empty()) {
Value *V = DeadMDNodes.back(); DeadMDNodes.pop_back();
if (const MDNode *N = dyn_cast_or_null<MDNode>(V))
if (N->use_empty())
delete N;
}
}
return Changed;
}
MetadataContext &LLVMContext::getMetadata() {
return pImpl->TheMetadata;
}