1 files changed, 2 insertions, 4 deletions
diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
index 4f79565..4c6f6f1 100644
--- a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
+++ b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -3641,14 +3641,12 @@ static bool unswitchLoop(Loop &L, DominatorTree &DT, LoopInfo &LI,
     }
     // Next check all loops nested within L.
     SmallVector<const Loop *, 4> Worklist;
-    Worklist.insert(Worklist.end(), L->getSubLoops().begin(),
-                    L->getSubLoops().end());
+    llvm::append_range(Worklist, L->getSubLoops());
     while (!Worklist.empty()) {
       auto *CurLoop = Worklist.pop_back_val();
       if (!PSI->isColdBlock(CurLoop->getHeader(), BFI))
         return false;
-      Worklist.insert(Worklist.end(), CurLoop->getSubLoops().begin(),
-                      CurLoop->getSubLoops().end());
+      llvm::append_range(Worklist, CurLoop->getSubLoops());
     }
     return true;
   };