wirte up .file and .file to the mc asmparser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94438 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 077d2df..d5bc396 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1708,14 +1708,18 @@
   if (Lexer.isNot(AsmToken::String))
     return TokError("unexpected token in '.file' directive");
   
-  StringRef ATTRIBUTE_UNUSED FileName = getTok().getString();
+  StringRef Filename = getTok().getString();
+  Filename = Filename.substr(1, Filename.size()-2);
   Lex();
 
   if (Lexer.isNot(AsmToken::EndOfStatement))
     return TokError("unexpected token in '.file' directive");
 
-  // FIXME: Do something with the .file.
-
+  if (FileNumber == -1)
+    Out.EmitFileDirective(Filename);
+  else
+    Out.EmitDwarfFileDirective(FileNumber, Filename);
+  
   return false;
 }