[llvm] r330683 - [NFC] Use forgetTopmostLoop instead of logic duplication

[Max Kazantsev via llvm-commits]

Author: mkazantsev
Date: Mon Apr 23 21:33:04 2018
New Revision: 330683

URL: http://llvm.org/viewvc/llvm-project?rev=330683&view=rev
Log:
[NFC] Use forgetTopmostLoop instead of logic duplication

Modified:
    llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp

Modified: llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp?rev=330683&r1=330682&r2=330683&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp Mon Apr 23 21:33:04 2018
@@ -511,12 +511,8 @@ LoopUnrollResult llvm::UnrollLoop(
   // and if something changes inside them then any of outer loops may also
   // change. When we forget outermost loop, we also forget all contained loops
   // and this is what we need here.
-  if (SE) {
-    const Loop *CurrL = L;
-    while (const Loop *ParentL = CurrL->getParentLoop())
-      CurrL = ParentL;
-    SE->forgetLoop(CurrL);
-  }
+  if (SE)
+    SE->forgetTopmostLoop(L);
 
   bool ContinueOnTrue = L->contains(BI->getSuccessor(0));
   BasicBlock *LoopExit = BI->getSuccessor(ContinueOnTrue);