Remove a function argument and propagate const around accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168338 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 1188ffa..5b281fe 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -494,15 +494,15 @@
 
   /// collectInfoFromNamedMDNodes - Collect debug info from named mdnodes such
   /// as llvm.dbg.enum and llvm.dbg.ty
-  void collectInfoFromNamedMDNodes(Module *M);
+  void collectInfoFromNamedMDNodes(const Module *M);
 
   /// collectLegacyDebugInfo - Collect debug info using DebugInfoFinder.
   /// FIXME - Remove this when DragonEgg switches to DIBuilder.
-  bool collectLegacyDebugInfo(Module *M);
+  bool collectLegacyDebugInfo(const Module *M);
 
   /// beginModule - Emit all Dwarf sections that should come prior to the
   /// content.
-  void beginModule(Module *M);
+  void beginModule();
 
   /// endModule - Emit all Dwarf sections that should come after the content.
   ///