Make Loop and MachineLoop be subclasses of LoopBase, rather than typedefs,
using the Curiously Recurring Template Pattern with LoopBase.

This will help further refactoring, and future functionality for
Loop. Also, Headers can now foward-declare Loop, instead of pulling
in LoopInfo.h or doing tricks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75519 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/IVUsers.cpp b/lib/Analysis/IVUsers.cpp
index 317c869..9ad7cc9 100644
--- a/lib/Analysis/IVUsers.cpp
+++ b/lib/Analysis/IVUsers.cpp
@@ -54,7 +54,7 @@
       if (newLoop == L)
         return false;
       // if newLoop is an outer loop of L, this is OK.
-      if (!LoopInfoBase<BasicBlock>::isNotAlreadyContainedIn(L, newLoop))
+      if (!LoopInfo::isNotAlreadyContainedIn(L, newLoop))
         return false;
     }
     return true;