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/Scalar/GCSE.cpp

@@ -30,6 +30,10 @@ namespace {
     DominatorSet        *DomSetInfo;
     ImmediateDominators *ImmDominator;
   public:
+    const char *getPassName() const {
+      return "Global Common Subexpression Elimination";
+    }
+
     virtual bool runOnFunction(Function *F);
 
     // Visitation methods, these are invoked depending on the type of