introduce typedef for complicated vector, and use it too

llvm-svn: 62384
diff --git a/llvm/lib/Transforms/Utils/InlineFunction.cpp b/llvm/lib/Transforms/Utils/InlineFunction.cpp
index 6704b60..cee224a 100644
--- a/llvm/lib/Transforms/Utils/InlineFunction.cpp
+++ b/llvm/lib/Transforms/Utils/InlineFunction.cpp
@@ -158,8 +158,7 @@
   CallGraphNode::iterator I = CalleeNode->begin(), E = CalleeNode->end();
 
   // Consider the case where CalleeNode == CallerNode.
-  typedef std::pair<CallSite, CallGraphNode*> CallRecord;
-  std::vector<CallRecord> CallCache;
+  CallGraphNode::CalledFunctionsVector CallCache;
   if (CalleeNode == CallerNode) {
     CallCache.assign(I, E);
     I = CallCache.begin();