Merge commit '0f9f95146a7f' from llvm.org/main into next

git apple-llvm automerger · git apple-llvm automerger · commit fced1a1ae0eb · 2023-07-08T21:02:17.000-07:00
diff --git a/llvm/include/llvm/Support/Format.h b/llvm/include/llvm/Support/Format.h
@@ -28,6 +28,7 @@
 #include "llvm/Support/DataTypes.h"
 #include <cassert>
 #include <cstdio>
+#include <optional>
 #include <tuple>
 #include <utility>
 
