Add new optional getPassName() virtual function that a Pass can override

to make debugging output a lot nicer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2395 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/FunctionLiveVarInfo.h

@@ -105,6 +105,8 @@ public:
 
   FunctionLiveVarInfo(AnalysisID id = ID) { assert(id == ID); }
 
+  virtual const char *getPassName() const { return "Live Variable Analysis"; }
+
   // --------- Implement the FunctionPass interface ----------------------
 
   // runOnFunction - Perform analysis, update internal data structures.