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/Instrumentation/ProfilePaths/ProfilePaths.cpp b/llvm/lib/Transforms/Instrumentation/ProfilePaths/ProfilePaths.cpp
index 26fa866..3a44dbf 100644
--- a/llvm/lib/Transforms/Instrumentation/ProfilePaths/ProfilePaths.cpp
+++ b/llvm/lib/Transforms/Instrumentation/ProfilePaths/ProfilePaths.cpp
@@ -37,8 +37,9 @@
 
 using std::vector;
 
-class ProfilePaths: public FunctionPass {
- public:
+struct ProfilePaths : public FunctionPass {
+  const char *getPassName() const { return "ProfilePaths"; }
+
   bool runOnFunction(Function *F);
 
   // Before this pass, make sure that there is only one