Work is incomplete. Loop is not modified at all right now.

llvm-svn: 42119
diff --git a/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp b/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 0baf2b8..c2e9d50 100644
--- a/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -868,7 +868,7 @@
   updateLoopBounds(Op0);
   updateLoopBounds(Op1);
   // Update CFG
-  return true;
+  return false;
 }