diff --git a/llvm/lib/System/Path.cpp b/llvm/lib/System/Path.cpp
index 6f0667f..11035cf 100644
--- a/llvm/lib/System/Path.cpp
+++ b/llvm/lib/System/Path.cpp
@@ -172,7 +172,10 @@
   return false;
 }
 
-
+std::string
+Path::getSuffix() const {
+  return path.substr(path.rfind('.') + 1);
+}
 
 // Include the truly platform-specific parts of this class.
 #if defined(LLVM_ON_UNIX)