reapply r98035:
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98047 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 0c04502..40d1d64 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -512,10 +512,10 @@
   ///
   void endFunction(const MachineFunction *MF);
 
-  /// recordSourceLine - Records location information and associates it with a 
-  /// label. Returns a unique label ID used to generate a label and provide
-  /// correspondence to the source line list.
-  unsigned recordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
+  /// recordSourceLine - Register a source line with debug info. Returns the
+  /// unique label that was emitted and which provides correspondence to
+  /// the source line list.
+  MCSymbol *recordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
 
   /// getSourceLineCount - Return the number of source lines in the debug
   /// info.
@@ -539,7 +539,7 @@
   void collectVariableInfo();
 
   /// beginScope - Process beginning of a scope starting at Label.
-  void beginScope(const MachineInstr *MI, unsigned Label);
+  void beginScope(const MachineInstr *MI, MCSymbol *Label);
 
   /// endScope - Prcess end of a scope.
   void endScope(const MachineInstr *MI);