lobsters comment points out [[unlikely]] works here for clang https://clang.godbolt.org/z/r4xYWfPfe https://clang.godbolt.org/z/r4xYWfPfe edit: oh the article

lobsters comment points out [[unlikely]] works here for clang https://clang.godbolt.org/z/r4xYWfPfe https://clang.godbolt.org/z/r4xYWfPfe edit: oh the article also mentions it now :)