"use of undefined value '@" +
utostr(ForwardRefValIDs.begin()->first) + "'");
+ if (!ForwardRefMDNodes.empty())
+ return Error(ForwardRefMDNodes.begin()->second.second,
+ "use of undefined metadata '!" +
+ utostr(ForwardRefMDNodes.begin()->first) + "'");
+
+
// Look for intrinsic functions and CallInst that need to be upgraded
for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
return true;
MetadataCache[MetadataID] = Init;
+ std::map<unsigned, std::pair<Constant *, LocTy> >::iterator
+ FI = ForwardRefMDNodes.find(MetadataID);
+ if (FI != ForwardRefMDNodes.end()) {
+ Constant *FwdNode = FI->second.first;
+ FwdNode->replaceAllUsesWith(Init);
+ ForwardRefMDNodes.erase(FI);
+ }
+
return false;
}
unsigned MID = 0;
if (!ParseUInt32(MID)) {
std::map<unsigned, Constant *>::iterator I = MetadataCache.find(MID);
- if (I == MetadataCache.end())
- return TokError("Unknown metadata reference");
- ID.ConstantVal = I->second;
+ if (I != MetadataCache.end())
+ ID.ConstantVal = I->second;
+ else {
+ std::map<unsigned, std::pair<Constant *, LocTy> >::iterator
+ FI = ForwardRefMDNodes.find(MID);
+ if (FI != ForwardRefMDNodes.end())
+ ID.ConstantVal = FI->second.first;
+ else {
+ // Create MDNode forward reference
+ SmallVector<Value *, 1> Elts;
+ std::string FwdRefName = "llvm.mdnode.fwdref." + MID;
+ Elts.push_back(Context.getMDString(FwdRefName));
+ MDNode *FwdNode = Context.getMDNode(Elts.data(), Elts.size());
+ ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
+ ID.ConstantVal = FwdNode;
+ }
+ }
+
return false;
}