diff --git a/lib/IR/Instruction.cpp b/lib/IR/Instruction.cpp
index 937dc695780..8bc08d6c304 100644
--- a/lib/IR/Instruction.cpp
+++ b/lib/IR/Instruction.cpp
@@ -690,10 +690,6 @@ bool Instruction::isSafeToRemove() const {
 }
 
 bool Instruction::willReturn() const {
-  // Volatile store isn't guaranteed to return; see LangRef.
-  if (auto *SI = dyn_cast<StoreInst>(this))
-    return !SI->isVolatile();
-
   if (const auto *CB = dyn_cast<CallBase>(this))
     // FIXME: Temporarily assume that all side-effect free intrinsics will
     // return. Remove this workaround once all intrinsics are appropriately