On Fri, 27 Sept 2024 at 10:17, Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote: > > The barrier() is ineffective at fixing the issue. > It does not prevent the compiler CSE from losing the > address dependency:
Ok. Thanks for actually specifying code. That needs to be (a) in a comment (b) the value barrier needs to be on *both* values so that the order of the equality testing doesn't matter. > I'm preparing a small series that aims to show how a minimal > hazard pointer implementation can help improve common scenarios: I want actual numbers on real loads. Just so you know. Not "this can help". But "this actually really _does_ help". Linus