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/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 5cf2ffd..794f772 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -379,7 +379,7 @@
   MRI = &MF.getRegInfo();
   TII = TM.getInstrInfo();
   TRI = TM.getRegisterInfo();
-  LV = getAnalysisToUpdate<LiveVariables>();
+  LV = getAnalysisIfAvailable<LiveVariables>();
 
   bool MadeChange = false;