diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp index 8df4a4529f47..f11ba8772f3c 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp @@ -85,13 +85,16 @@ static Value *decomposeSimpleLinearExpr(Value *Val, unsigned &Scale, Instruction *InstCombinerImpl::PromoteCastOfAllocation(BitCastInst &CI, AllocaInst &AI) { PointerType *PTy = cast<PointerType>(CI.getType()); + // Opaque pointers don't have an element type we could replace with. + if (PTy->isOpaque()) + return nullptr; IRBuilderBase::InsertPointGuard Guard(Builder); Builder.SetInsertPoint(&AI); // Get the type really allocated and the type casted to. Type *AllocElTy = AI.getAllocatedType(); - Type *CastElTy = PTy->getElementType(); + Type *CastElTy = PTy->getNonOpaquePointerElementType(); if (!AllocElTy->isSized() || !CastElTy->isSized()) return nullptr; // This optimisation does not work for cases where the cast type @@ -2649,8 +2652,8 @@ static Instruction *convertBitCastToGEP(BitCastInst &CI, IRBuilderBase &Builder, if (SrcPTy->isOpaque() || DstPTy->isOpaque()) return nullptr; - Type *DstElTy = DstPTy->getElementType(); - Type *SrcElTy = SrcPTy->getElementType(); + Type *DstElTy = DstPTy->getNonOpaquePointerElementType(); + Type *SrcElTy = SrcPTy->getNonOpaquePointerElementType(); // When the type pointed to is not sized the cast cannot be // turned into a gep. @@ -2669,8 +2672,8 @@ static Instruction *convertBitCastToGEP(BitCastInst &CI, IRBuilderBase &Builder, // If we found a path from the src to dest, create the getelementptr now. if (SrcElTy == DstElTy) { SmallVector<Value *, 8> Idxs(NumZeros + 1, Builder.getInt32(0)); - GetElementPtrInst *GEP = - GetElementPtrInst::Create(SrcPTy->getElementType(), Src, Idxs); + GetElementPtrInst *GEP = GetElementPtrInst::Create( + SrcPTy->getNonOpaquePointerElementType(), Src, Idxs); // If the source pointer is dereferenceable, then assume it points to an // allocated object and apply "inbounds" to the GEP. |