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/IPO/InlineSimple.cpp b/llvm/lib/Transforms/IPO/InlineSimple.cpp
index 1581323..ba64a6a 100644
--- a/llvm/lib/Transforms/IPO/InlineSimple.cpp
+++ b/llvm/lib/Transforms/IPO/InlineSimple.cpp
@@ -271,6 +271,7 @@
 
 namespace {
   struct FunctionInlining : public FunctionPass {
+    const char *getPassName() const { return "Function Inlining"; }
     virtual bool runOnFunction(Function *F) {
       return doFunctionInlining(F);
     }