[Info-vax] LLVM, volatile and async VMS I/O and system calls

[Simon Clubley]

On 2021-09-22, abrsvc <dansabrservices at yahoo.com> wrote:
>
> I would also ask why does seemingly every question have a negative bent toward OpenVMS?

It doesn't. I've posted very positive comments about VMS clusters
and the cluster-wide DLM (for example) in the past. Even today, they
are still very strong features in VMS (ignoring the price tag. :-)).

However, experience in other operating systems causes me to see
missing features in VMS, at least some of which people might expect as
standard these days.

At a policy level, some negative statements I've made about the move
to time-limited production licences appear to be widely supported.

> Why is what LLVM does "correct' where potentially what OpenVMS does buggy?

Not buggy, just not as aggressive. LLVM is a much more aggressive optimiser
from what I can tell.

To give you an idea of what LLVM gets up to, this is the current list
of LLVM passes:

https://llvm.org/docs/Passes.html

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.