Rename getAnalysisToUpdate to getAnalysisIfAvailable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63198 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopUnroll.cpp b/lib/Transforms/Scalar/LoopUnroll.cpp
index 6d685d5..2025fb6 100644
--- a/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -170,10 +170,10 @@
     return false;
 
   // FIXME: Reconstruct dom info, because it is not preserved properly.
-  DominatorTree *DT = getAnalysisToUpdate<DominatorTree>();
+  DominatorTree *DT = getAnalysisIfAvailable<DominatorTree>();
   if (DT) {
     DT->runOnFunction(*F);
-    DominanceFrontier *DF = getAnalysisToUpdate<DominanceFrontier>();
+    DominanceFrontier *DF = getAnalysisIfAvailable<DominanceFrontier>();
     if (DF)
       DF->runOnFunction(*F);
   }