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/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 8087cbe..7c0563b 100644
--- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -508,7 +508,7 @@
   // because we'll need to do type comparisons based on the underlying type.
   Value *cpyDest = cpy->getDest();
   Value *cpySrc = cpy->getSource();
-  CallSite CS = CallSite::get(C);
+  CallSite CS(C);
 
   // We need to be able to reason about the size of the memcpy, so we require
   // that it be a constant.
@@ -636,10 +636,11 @@
   return true;
 }
 
-/// processMemCpy - perform simplication of memcpy's.  If we have memcpy A which
-/// copies X to Y, and memcpy B which copies Y to Z, then we can rewrite B to be
-/// a memcpy from X to Z (or potentially a memmove, depending on circumstances).
-///  This allows later passes to remove the first memcpy altogether.
+/// processMemCpy - perform simplification of memcpy's.  If we have memcpy A
+/// which copies X to Y, and memcpy B which copies Y to Z, then we can rewrite
+/// B to be a memcpy from X to Z (or potentially a memmove, depending on
+/// circumstances). This allows later passes to remove the first memcpy
+/// altogether.
 bool MemCpyOpt::processMemCpy(MemCpyInst *M) {
   MemoryDependenceAnalysis &MD = getAnalysis<MemoryDependenceAnalysis>();