Check for empty structs, and for consistency, zero-element arrays.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123383 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index 0ec0957..e248413 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -1084,12 +1084,12 @@
const Type *&EltTy) {
if (const ArrayType *AT = dyn_cast<ArrayType>(T)) {
NumElts = AT->getNumElements();
- EltTy = AT->getElementType();
+ EltTy = (NumElts == 0 ? 0 : AT->getElementType());
return true;
}
if (const StructType *ST = dyn_cast<StructType>(T)) {
NumElts = ST->getNumContainedTypes();
- EltTy = ST->getContainedType(0);
+ EltTy = (NumElts == 0 ? 0 : ST->getContainedType(0));
for (unsigned n = 1; n < NumElts; ++n) {
if (ST->getContainedType(n) != EltTy)
return false;