Hello,

This makes good sense in general anyway, and in particular
with forthcoming support for shared shared libraries, which will
work for mrtp alone but not yet for mrtp+mcmodel=large.

We have been using this in gcc-11 based development toolchains
for a while.

Committing to mainline.

Regards,

Olivier

2022-03-20  Olivier Hainque  <hainque@adacore.com>

gcc/
        * config/aarch64/t-aarch64-vxworks: Request multilib
        variants for mcmodel=large.