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/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp
index bd389db..147ccab 100644
--- a/lib/CodeGen/PHIElimination.cpp
+++ b/lib/CodeGen/PHIElimination.cpp
@@ -174,7 +174,7 @@
   }
 
   // Update live variable information if there is any.
-  LiveVariables *LV = getAnalysisToUpdate<LiveVariables>();
+  LiveVariables *LV = getAnalysisIfAvailable<LiveVariables>();
   if (LV) {
     MachineInstr *PHICopy = prior(AfterPHIsIt);