Index: lib/Analysis/LoopInfo.cpp
===================================================================
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -223,15 +223,14 @@
     BasicBlock *H = getHeader();
     for (BasicBlock *BB : this->blocks()) {
       TerminatorInst *TI = BB->getTerminator();
-      MDNode *MD = nullptr;
 
       // Check if this terminator branches to the loop header.
-      for (BasicBlock *Successor : TI->successors()) {
-        if (Successor == H) {
-          MD = TI->getMetadata(LLVMContext::MD_loop);
-          break;
-        }
-      }
+      bool IsPredecessor = any_of(TI->successors(),
+        [=](BasicBlock *Successor) { return Successor == H; });
+      if (!IsPredecessor)
+        continue;
+
+      MDNode *MD = TI->getMetadata(LLVMContext::MD_loop);
       if (!MD)
         return nullptr;