diff options
| -rw-r--r-- | lib/Transforms/Scalar/ObjCARC.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/ObjCARC.cpp b/lib/Transforms/Scalar/ObjCARC.cpp index e68f2add73..43f95191c6 100644 --- a/lib/Transforms/Scalar/ObjCARC.cpp +++ b/lib/Transforms/Scalar/ObjCARC.cpp @@ -2361,7 +2361,13 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) { new StoreInst(UndefValue::get(cast<PointerType>(Ty)->getElementType()), Constant::getNullValue(Ty), CI); - CI->replaceAllUsesWith(UndefValue::get(CI->getType())); + llvm::Value *NewValue = UndefValue::get(CI->getType()); + DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: A null " + "pointer-to-weak-pointer is undefined behavior.\n" + " Old = " << *CI << + "\n New = " << + *NewValue << "\n"); + CI->replaceAllUsesWith(NewValue); CI->eraseFromParent(); continue; } @@ -2377,7 +2383,15 @@ void ObjCARCOpt::OptimizeIndividualCalls(Function &F) { new StoreInst(UndefValue::get(cast<PointerType>(Ty)->getElementType()), Constant::getNullValue(Ty), CI); - CI->replaceAllUsesWith(UndefValue::get(CI->getType())); + + llvm::Value *NewValue = UndefValue::get(CI->getType()); + DEBUG(dbgs() << "ObjCARCOpt::OptimizeIndividualCalls: A null " + "pointer-to-weak-pointer is undefined behavior.\n" + " Old = " << *CI << + "\n New = " << + *NewValue << "\n"); + + CI->replaceAllUsesWith(NewValue); CI->eraseFromParent(); continue; } |