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While cloning a module, clone metadata attached with instructions.

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llvm-svn: 106591
This commit is contained in:
Devang Patel 2010-06-22 22:50:42 +00:00
parent 93ec8dcd01
commit dca60347e5
1 changed files with 16 additions and 1 deletions
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17
lib/Transforms/Utils/CloneModule.cpp
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@ -133,6 +133,21 @@ Module *llvm::CloneModule(const Module *M,
NamedMDNode::Create(New->getContext(), NMD.getName(),
MDs.data(), MDs.size(), New);
}
// Update metadata attach with instructions.
for (Module::iterator MI = New->begin(), ME = New->end(); MI != ME; ++MI)
for (Function::iterator FI = MI->begin(), FE = MI->end();
FI != FE; ++FI)
for (BasicBlock::iterator BI = FI->begin(), BE = FI->end();
BI != BE; ++BI) {
SmallVector<std::pair<unsigned, MDNode *>, 4 > MDs;
BI->getAllMetadata(MDs);
for (SmallVector<std::pair<unsigned, MDNode *>, 4>::iterator
MDI = MDs.begin(), MDE = MDs.end(); MDI != MDE; ++MDI) {
Value *MappedValue = MapValue(MDI->second, ValueMap);
if (MDI->second != MappedValue && MappedValue)
BI->setMetadata(MDI->first, cast<MDNode>(MappedValue));
}
}
return New;
}