Turn the Edit member into a pointer so it can change dynamically.

No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126898 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.h b/lib/CodeGen/SplitKit.h
index 05de1505..7b30361 100644
--- a/lib/CodeGen/SplitKit.h
+++ b/lib/CodeGen/SplitKit.h
@@ -165,7 +165,7 @@
   const TargetRegisterInfo &TRI;
 
   /// Edit - The current parent register and new intervals created.
-  LiveRangeEdit &Edit;
+  LiveRangeEdit *Edit;
 
   /// Index into Edit of the currently open interval.
   /// The index 0 is used for the complement, so the first interval started by