Commit more code over to new cast style


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@697 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index b1a272f..87dbf2b 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -38,10 +38,8 @@
 
   for (Method::inst_iterator II = M->inst_begin(), IE = M->inst_end();
        II != IE; ++II) {
-    if (II->getOpcode() == Instruction::Call) {
-      CallInst *CI = (CallInst*)*II;
+    if (CallInst *CI = dyn_cast<CallInst>(*II))
       Node->addCalledMethod(getNodeFor(CI->getCalledMethod()));
-    }
   }
 }