bug 122:
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14942
diff --git a/llvm/lib/Analysis/DataStructure/Printer.cpp b/llvm/lib/Analysis/DataStructure/Printer.cpp
index 87d6bbc..24bf768 100644
--- a/llvm/lib/Analysis/DataStructure/Printer.cpp
+++ b/llvm/lib/Analysis/DataStructure/Printer.cpp
@@ -138,7 +138,7 @@
     // Add scalar nodes to the graph...
     const DSGraph::ScalarMapTy &VM = G->getScalarMap();
     for (DSGraph::ScalarMapTy::const_iterator I = VM.begin(); I != VM.end();++I)
-      if (!isa<GlobalValue>(I->first) && !isa<ConstantPointerRef>(I->first)) {
+      if (!isa<GlobalValue>(I->first)) {
         std::stringstream OS;
         WriteAsOperand(OS, I->first, false, true, CurMod);
         GW.emitSimpleNode(I->first, "", OS.str());