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/IPO/GlobalDCE.cpp

@@ -49,6 +49,8 @@ static bool RemoveUnreachableFunctions(Module *M, CallGraph &CallGraph) {
 
 namespace {
   struct GlobalDCE : public Pass {
+    const char *getPassName() const { return "Dead Global Elimination"; }
+
     // run - Do the GlobalDCE pass on the specified module, optionally updating
     // the specified callgraph to reflect the changes.
     //