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

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 5618f09efe28c4e50595a369d4085b11a5bb937b..f41b7693badc7a8e6ce4332b3cfa453f2b0fce4d 100644 (file)
--- 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);