simplify by using CallSite constructors; virtually eliminates CallSite::get from the tree

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109687 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index dcb657c..82294dc 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -508,10 +508,10 @@
   void visitLoadInst      (LoadInst &I);
   void visitGetElementPtrInst(GetElementPtrInst &I);
   void visitCallInst      (CallInst &I) {
-    visitCallSite(CallSite::get(&I));
+    visitCallSite(&I);
   }
   void visitInvokeInst    (InvokeInst &II) {
-    visitCallSite(CallSite::get(&II));
+    visitCallSite(&II);
     visitTerminatorInst(II);
   }
   void visitCallSite      (CallSite CS);