1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index 7cf69f613c66..f6b955162fa5 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -589,14 +589,17 @@ Constant *FoldReinterpretLoadFromConst(Constant *C, Type *LoadTy,
   if (BytesLoaded > 32 || BytesLoaded == 0)
     return nullptr;
 
-  int64_t InitializerSize = DL.getTypeAllocSize(C->getType()).getFixedSize();
-
   // If we're not accessing anything in this constant, the result is undefined.
   if (Offset <= -1 * static_cast<int64_t>(BytesLoaded))
     return UndefValue::get(IntType);
 
+  // TODO: We should be able to support scalable types.
+  TypeSize InitializerSize = DL.getTypeAllocSize(C->getType());
+  if (InitializerSize.isScalable())
+    return nullptr;
+
   // If we're not accessing anything in this constant, the result is undefined.
-  if (Offset >= InitializerSize)
+  if (Offset >= (int64_t)InitializerSize.getFixedValue())
     return UndefValue::get(IntType);
 
   unsigned char RawBytes[32] = {0};