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

lib/Transforms/Utils/PromoteMemoryToRegister.cpp

@@ -44,6 +44,8 @@ namespace {
     map<BasicBlock*,vector<PHINode*> > NewPhiNodes; // the PhiNodes we're adding
 
   public:
+    const char *getPassName() const { return "Promote Memory to Register"; }
+
     // runOnFunction - To run this pass, first we calculate the alloca
     // instructions that are safe for promotion, then we promote each one.
     //