On Thu, Apr 11, 2019 at 3:18 AM Arnd Bergmann <arnd@xxxxxxxx> wrote: > > On Thu, Apr 11, 2019 at 12:20 AM 'Nick Desaulniers' via Clang Built > Linux <clang-built-linux@xxxxxxxxxxxxxxxx> wrote: > > > > On Wed, Apr 10, 2019 at 1:13 PM Arnd Bergmann <arnd@xxxxxxxx> wrote: > > > > > > llvm does does not understand -march=z9-109 and older target > > > > Please file bugs for these in LLVM's issue tracker. It might be > > possible to enable these additional architecture variants if they're > > similar to existing ones and simply unrecognized. IIRC, we had this > > issue with armv7 variants. > > I really don't see that as necessary here. While generally speaking, > it would be nice to support the widest possible range of hardware, > and it would not be hard to add this support, it seems highly unlikely > that anyone would actually want to use that in case of s390. > > The last enterprise distros to support z9 were SLES11 (end of life as > of last month) and RHEL6 (ending its 10 year life next year). Anyone > who is still on those releases will probably not install a brand new > compiler, and anyone who is on newer releases won't run on prehistoric > hardware. Are those machine variants worth dropping kernel support for then? > > Debian still runs on very old hardware in theory, but even there you'd > have a hard time finding someone to test the output of the compiler > on an old machine. > > Arnd -- Thanks, ~Nick Desaulniers
