Add new optional getPassName() virtual function that a Pass can override
to make debugging output a lot nicer.

llvm-svn: 2395
diff --git a/llvm/lib/Transforms/Scalar/SymbolStripping.cpp b/llvm/lib/Transforms/Scalar/SymbolStripping.cpp
index f99684f..8320716 100644
--- a/llvm/lib/Transforms/Scalar/SymbolStripping.cpp
+++ b/llvm/lib/Transforms/Scalar/SymbolStripping.cpp
@@ -61,6 +61,8 @@
 
 namespace {
   struct SymbolStripping : public FunctionPass {
+    const char *getPassName() const { return "Strip Symbols from Functions"; }
+
     virtual bool runOnFunction(Function *F) {
       return doSymbolStripping(F);
     }
@@ -70,6 +72,7 @@
   };
 
   struct FullSymbolStripping : public SymbolStripping {
+    const char *getPassName() const { return "Strip Symbols from Module"; }
     virtual bool doInitialization(Module *M) {
       return doStripGlobalSymbols(M);
     }