diff --git a/llvm/include/llvm/Transforms/Utils/SpecialCaseList.h b/llvm/include/llvm/Transforms/Utils/SpecialCaseList.h
index 42d9735c5a76..30e3e46ef5f9 100644
--- a/llvm/include/llvm/Transforms/Utils/SpecialCaseList.h
+++ b/llvm/include/llvm/Transforms/Utils/SpecialCaseList.h
@@ -35,6 +35,7 @@
 namespace llvm {
 class Function;
 class GlobalVariable;
+class MemoryBuffer;
 class Module;
 class Regex;
 class StringRef;
@@ -42,6 +43,8 @@ class StringRef;
 class SpecialCaseList {
  public:
   SpecialCaseList(const StringRef Path);
+  SpecialCaseList(const MemoryBuffer *MB);
+
   // Returns whether either this function or it's source file are blacklisted.
   bool isIn(const Function &F) const;
   // Returns whether either this global or it's source file are blacklisted.
@@ -53,6 +56,7 @@ class SpecialCaseList {
  private:
   StringMap<Regex*> Entries;
 
+  void init(const MemoryBuffer *MB);
   bool inSection(const StringRef Section, const StringRef Query) const;
 };
 
diff --git a/llvm/lib/Transforms/Utils/SpecialCaseList.cpp b/llvm/lib/Transforms/Utils/SpecialCaseList.cpp
index a1083e361166..8f6802ba0231 100644
--- a/llvm/lib/Transforms/Utils/SpecialCaseList.cpp
+++ b/llvm/lib/Transforms/Utils/SpecialCaseList.cpp
@@ -39,9 +39,17 @@ SpecialCaseList::SpecialCaseList(const StringRef Path) {
                        EC.message());
   }
 
+  init(File.get());
+}
+
+SpecialCaseList::SpecialCaseList(const MemoryBuffer *MB) {
+  init(MB);
+}
+
+void SpecialCaseList::init(const MemoryBuffer *MB) {
   // Iterate through each line in the blacklist file.
   SmallVector<StringRef, 16> Lines;
-  SplitString(File.take()->getBuffer(), Lines, "\n\r");
+  SplitString(MB->getBuffer(), Lines, "\n\r");
   StringMap<std::string> Regexps;
   for (SmallVectorImpl<StringRef>::iterator I = Lines.begin(), E = Lines.end();
        I != E; ++I) {