/// removeMDs - Remove all metadata attached with an instruction.
void removeMDs(const Instruction *Inst);
+ /// copyMD - If metadata is attached with Instruction In1 then attach
+ /// the same metadata to In2.
+ void copyMD(Instruction *In1, Instruction *In2);
+
/// getHandlerNames - Get handler names. This is used by bitcode
/// writer.
const StringMap<unsigned> *getHandlerNames();
MetadataStore.erase(I);
}
+/// copyMD - If metadata is attached with Instruction In1 then attach
+/// the same metadata to In2.
+void MetadataContext::copyMD(Instruction *In1, Instruction *In2) {
+ assert (In1 && In2 && "Invalid instruction!");
+ MDStoreTy::iterator I = MetadataStore.find(In1);
+ if (I == MetadataStore.end())
+ return;
+
+ MDMapTy &In1Info = I->second;
+ MDMapTy In2Info;
+ for (MDMapTy::iterator I = In1Info.begin(), E = In1Info.end(); I != E; ++I)
+ if (MDNode *MD = dyn_cast_or_null<MDNode>(I->second))
+ addMD(I->first, MD, In2);
+}
/// getMD - Get the metadata of given kind attached with an Instruction.
/// If the metadata is not found then return 0.
// FIXME : Give custom handlers a chance to override this.
ValueIsCloned(I1, I2);
}
+