eliminate RegisterOpt. It does the same thing as RegisterPass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/LoopSimplify.cpp

@@ -89,7 +89,7 @@ namespace {
                                          std::vector<BasicBlock*> &PredBlocks);
   };
 
-  RegisterOpt<LoopSimplify>
+  RegisterPass<LoopSimplify>
   X("loopsimplify", "Canonicalize natural loops", true);
 }