diff options
| -rw-r--r-- | include/llvm/Metadata.h | 4 | ||||
| -rw-r--r-- | lib/VMCore/Metadata.cpp | 15 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/llvm/Metadata.h b/include/llvm/Metadata.h index dd79ac0..63c2da2 100644 --- a/include/llvm/Metadata.h +++ b/include/llvm/Metadata.h @@ -351,6 +351,10 @@ public: /// 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(); diff --git a/lib/VMCore/Metadata.cpp b/lib/VMCore/Metadata.cpp index f3601cb..110c5e3 100644 --- a/lib/VMCore/Metadata.cpp +++ b/lib/VMCore/Metadata.cpp @@ -359,6 +359,20 @@ void MetadataContext::removeMDs(const Instruction *Inst) { 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. @@ -416,3 +430,4 @@ void MetadataContext::ValueIsRAUWd(Value *V1, Value *V2) { // FIXME : Give custom handlers a chance to override this. ValueIsCloned(I1, I2); } + |