Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg")
instead, as an example of what this looks like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110478 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
index 3d64d53..a51f1e1 100644
--- a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
+++ b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
@@ -35,7 +35,7 @@
   // We preserve the non-critical-edgeness property
   AU.addPreservedID(BreakCriticalEdgesID);
   // This is a cluster of orthogonal Transforms
-  AU.addPreservedID(PromoteMemoryToRegisterID);
+  AU.addPreserved("mem2reg");
   AU.addPreservedID(LowerSwitchID);
 }