MemCmpExpansion::getCompareLoadPairs - assert we find a comparison diff. NFCI.
Fix scan-build uninitialized warning and assert the final diff isn't null.
llvm-svn: 361095
diff --git a/llvm/lib/CodeGen/ExpandMemCmp.cpp b/llvm/lib/CodeGen/ExpandMemCmp.cpp
index a3a9790..06c171a 100644
--- a/llvm/lib/CodeGen/ExpandMemCmp.cpp
+++ b/llvm/lib/CodeGen/ExpandMemCmp.cpp
@@ -323,7 +323,7 @@
assert(LoadIndex < getNumLoads() &&
"getCompareLoadPairs() called with no remaining loads");
std::vector<Value *> XorList, OrList;
- Value *Diff;
+ Value *Diff = nullptr;
const unsigned NumLoads =
std::min(getNumLoads() - LoadIndex, NumLoadsPerBlockForZeroCmp);
@@ -400,6 +400,8 @@
while (OrList.size() != 1) {
OrList = pairWiseOr(OrList);
}
+
+ assert(Diff && "Failed to find comparison diff");
Cmp = Builder.CreateICmpNE(OrList[0], ConstantInt::get(Diff->getType(), 0));
}