diff --git a/llvm/lib/CodeGen/LexicalScopes.cpp b/llvm/lib/CodeGen/LexicalScopes.cpp
index 690b429..8139c2c 100644
--- a/llvm/lib/CodeGen/LexicalScopes.cpp
+++ b/llvm/lib/CodeGen/LexicalScopes.cpp
@@ -324,7 +324,7 @@
     Set = std::make_unique<BlockSetT>();
     getMachineBasicBlocks(DL, *Set);
   }
-  return Set->count(MBB) != 0;
+  return Set->contains(MBB);
 }
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)