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/LowerAllocations.cpp b/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
index 21456a2..c6cb81f 100644
--- a/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
@@ -34,6 +34,8 @@
     MallocFunc = FreeFunc = 0;
   }
 
+  const char *getPassName() const { return "Lower Allocations"; }
+
   // doPassInitialization - For the lower allocations pass, this ensures that a
   // module contains a declaration for a malloc and a free function.
   //
@@ -54,6 +56,8 @@
 public:
   inline RaiseAllocations() : MallocFunc(0), FreeFunc(0) {}
 
+  const char *getPassName() const { return "Raise Allocations"; }
+
   // doPassInitialization - For the raise allocations pass, this finds a
   // declaration for malloc and free if they exist.
   //
@@ -216,5 +220,3 @@
 Pass *createRaiseAllocationsPass() {
   return new RaiseAllocations();
 }
-
-