diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp
index edeee20..f526095 100644
--- a/llvm/lib/MC/MCDwarf.cpp
+++ b/llvm/lib/MC/MCDwarf.cpp
@@ -340,6 +340,8 @@
 unsigned MCDwarfLineTableHeader::getFile(StringRef &Directory,
                                          StringRef &FileName,
                                          unsigned FileNumber) {
+  if (Directory == CompilationDir)
+    Directory = "";
   if (FileName.empty()) {
     FileName = "<stdin>";
     Directory = "";