Add .loc methods to the streamer.

Next: Add support for the !HasDotLocAndDotFile case to the MCAsmStreamer
and then switch codegen to use it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119384 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 933b75e..cbd1810 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1995,9 +1995,8 @@
   if (FileNumber == -1)
     getStreamer().EmitFileDirective(Filename);
   else {
-    if (getContext().GetDwarfFile(Filename, FileNumber) == 0)
+    if (getStreamer().EmitDwarfFileDirective(FileNumber, Filename))
       Error(FileNumberLoc, "file number already allocated");
-    getStreamer().EmitDwarfFileDirective(FileNumber, Filename);
   }
 
   return false;
@@ -2125,8 +2124,8 @@
     }
   }
 
-  getContext().setCurrentDwarfLoc(FileNumber, LineNumber, ColumnPos, Flags,
-                                  Isa, Discriminator);
+  getStreamer().EmitDwarfLocDirective(FileNumber, LineNumber, ColumnPos, Flags,
+                                      Isa, Discriminator);
 
   return false;
 }