diff --git a/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp b/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
--- a/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
+++ b/llvm/lib/Transforms/Utils/InjectTLIMappings.cpp
@@ -77,11 +77,14 @@
   if (CI.isNoBuiltin() || !CI.getCalledFunction())
     return;
 
-  const std::string ScalarName = std::string(CI.getCalledFunction()->getName());
+  auto NameRef = CI.getCalledFunction()->getName();
+
   // Nothing to be done if the TLI thinks the function is not
   // vectorizable.
-  if (!TLI.isFunctionVectorizable(ScalarName))
+  if (!TLI.isFunctionVectorizable(NameRef))
     return;
+
+  const std::string ScalarName = std::string(NameRef);
   SmallVector<std::string, 8> Mappings;
   VFABI::getVectorVariantNames(CI, Mappings);
   Module *M = CI.getModule();