diff --git a/llvm/include/llvm/IR/DerivedTypes.h b/llvm/include/llvm/IR/DerivedTypes.h
--- a/llvm/include/llvm/IR/DerivedTypes.h
+++ b/llvm/include/llvm/IR/DerivedTypes.h
@@ -740,7 +740,8 @@
   TargetExtType(LLVMContext &C, StringRef Name, ArrayRef<Type *> Types,
                 ArrayRef<unsigned> Ints);
 
-  std::string Name;
+  // These strings are ultimately owned by the context.
+  StringRef Name;
   unsigned *IntParams;
 
 public:
diff --git a/llvm/lib/IR/Type.cpp b/llvm/lib/IR/Type.cpp
--- a/llvm/lib/IR/Type.cpp
+++ b/llvm/lib/IR/Type.cpp
@@ -793,7 +793,7 @@
 
 TargetExtType::TargetExtType(LLVMContext &C, StringRef Name,
                              ArrayRef<Type *> Types, ArrayRef<unsigned> Ints)
-    : Type(C, TargetExtTyID), Name(Name) {
+    : Type(C, TargetExtTyID), Name(C.pImpl->Saver.save(Name)) {
   NumContainedTys = Types.size();
 
   // Parameter storage immediately follows the class in allocation.