[LoopAccesses] Handle case when no memchecks are needed after partitioning

llvm-svn: 233930

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 1818e93eb0e..159efff1a70 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -1211,9 +1211,8 @@ static Instruction *getFirstInst(Instruction *FirstInst, Value *V,
 
 std::pair<Instruction *, Instruction *> LoopAccessInfo::addRuntimeCheck(
     Instruction *Loc, const SmallVectorImpl<int> *PtrPartition) const {
-  Instruction *tnullptr = nullptr;
   if (!PtrRtCheck.Need)
-    return std::pair<Instruction *, Instruction *>(tnullptr, tnullptr);
+    return std::make_pair(nullptr, nullptr);
 
   unsigned NumPointers = PtrRtCheck.Pointers.size();
   SmallVector<TrackingVH<Value> , 2> Starts;
@@ -1284,6 +1283,9 @@ std::pair<Instruction *, Instruction *> LoopAccessInfo::addRuntimeCheck(
     }
   }
 
+  if (!MemoryRuntimeCheck)
+    return std::make_pair(nullptr, nullptr);
+
   // We have to do this trickery because the IRBuilder might fold the check to a
   // constant expression in which case there is no Instruction anchored in a
   // the block.