Change some methods in MCDwarf.cpp to be able to handle an arbitrary

MCStreamer instead of just MCObjectStreamer. Address changes cannot
be as efficient as we have to use DW_LNE_set_addres, but at least
most of the logic is shared.

This will be used so that, with CodeGen still using EmitDwarfLocDirective,
llvm-gcc is able to produce debug_line sections without needing an
assembler that supports .loc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119777 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCStreamer.h

@@ -28,6 +28,7 @@ namespace llvm {
   class MCSymbol;
   class StringRef;
   class TargetAsmBackend;
+  class TargetLoweringObjectFile;
   class Twine;
   class raw_ostream;
   class formatted_raw_ostream;
@@ -388,6 +389,14 @@ namespace llvm {
                                 MCCodeEmitter *CE = 0,
                                 bool ShowInst = false);
 
+  MCStreamer *createAsmStreamerNoLoc(MCContext &Ctx, formatted_raw_ostream &OS,
+                                     bool isLittleEndian, bool isVerboseAsm,
+                                     const TargetLoweringObjectFile *TLOF,
+                                     int PointerSize,
+                                     MCInstPrinter *InstPrint = 0,
+                                     MCCodeEmitter *CE = 0,
+                                     bool ShowInst = false);
+
   /// createMachOStreamer - Create a machine code streamer which will generate
   /// Mach-O format object files.
   ///