From f83f42599d1242cc498b8062bb514b357aa572ce Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Fri, 23 Jul 2010 20:36:13 +0000
Subject: [PATCH] IF directory name is empty then try to extract one using
 absolute file name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109262 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 5618f09efe2..f41b7693bad 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1805,6 +1805,11 @@ void DwarfDebug::constructCompileUnit(const MDNode *N) {
   DICompileUnit DIUnit(N);
   StringRef FN = DIUnit.getFilename();
   StringRef Dir = DIUnit.getDirectory();
+  if (Dir.empty()) {
+    sys::Path AbsFileDirName(FN);
+    AbsFileDirName.makeAbsolute();
+    Dir = AbsFileDirName.getDirname();
+  }
   unsigned ID = GetOrCreateSourceID(Dir, FN);
 
   DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
-- 
2.34.1