diff options
| -rw-r--r-- | include/llvm/Support/ValueHandle.h | 3 | ||||
| -rw-r--r-- | lib/Transforms/Utils/SSAUpdater.cpp | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/llvm/Support/ValueHandle.h b/include/llvm/Support/ValueHandle.h index 6787633..61e21b8 100644 --- a/include/llvm/Support/ValueHandle.h +++ b/include/llvm/Support/ValueHandle.h @@ -110,11 +110,12 @@ protected: V != DenseMapInfo<Value *>::getTombstoneKey(); } -private: +public: // Callbacks made from Value. static void ValueIsDeleted(Value *V); static void ValueIsRAUWd(Value *Old, Value *New); +private: // Internal implementation details. ValueHandleBase **getPrevPtr() const { return PrevPair.getPointer(); } HandleBaseKind getKind() const { return PrevPair.getInt(); } diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp index b3f5289..e568a61 100644 --- a/lib/Transforms/Utils/SSAUpdater.cpp +++ b/lib/Transforms/Utils/SSAUpdater.cpp @@ -214,6 +214,11 @@ void SSAUpdater::RewriteUse(Use &U) { else V = GetValueInMiddleOfBlock(User->getParent()); + // Notify that users of the existing value that it is being replaced. + Value *OldVal = U.get(); + if (OldVal != V && OldVal->hasValueHandle()) + ValueHandleBase::ValueIsRAUWd(OldVal, V); + U.set(V); } |