Re: [RFC PATCH 2/2] gitlab-ci: Add a job building TCI with Clang

["Daniel P. Berrangé" <berrange@redhat.com>]

On Thu, Jan 21, 2021 at 12:18:18PM +0100, Philippe Mathieu-Daudé wrote:
> On 1/21/21 11:32 AM, Daniel P. Berrangé wrote:
> > On Thu, Jan 21, 2021 at 11:08:29AM +0100, Thomas Huth wrote:
> >> On 10/01/2021 17.27, Philippe Mathieu-Daudé wrote:
> >>> Split the current GCC build-tci job in 2, and use Clang
> >>> compiler in the new job.
> >>>
> >>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> >>> ---
> >>> RFC in case someone have better idea to optimize can respin this patch.
> >>>
> >>>   .gitlab-ci.yml | 22 ++++++++++++++++++++--
> >>>   1 file changed, 20 insertions(+), 2 deletions(-)
> >>
> >> I'm not quite sure whether we should go down this road ... if we wanted to
> >> have full test coverage for clang, we'd need to duplicate *all* jobs to run
> >> them once with gcc and once with clang. And that would be just overkill.
> >>
> >> I think we already catch most clang-related problems with the clang jobs
> >> that we already have in our CI, so problems like the ones that you've tried
> >> to address here should be very, very rare. So I'd rather vote for not
> >> splitting the job here.
> > 
> > We can't possibly cope with the fully expanded matrix of what are
> > theoretically possible combinations. Thus I think we should be guided
> > by what is expected real world usage by platforms we target.
> > 
> > Essentially for any given distro we're testing on, our primary focus
> > should be to use the toolchain that distro will build QEMU with.
> > 
> > IOW, for Windows and Linux distros our primary focus should be GCC,
> > while for macOS, and *BSD, our focus should be CLang.
> 
> Sounds good.
> 
> Do we need a TCI job on macOS then?

TCI is only relevant if there is no native TCG host impl.

macOS only targets aarch64 and x86_64, both of which have TCG, so there
is no reason to use TCI on macOS  AFAICT


Regards,
Daniel
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