https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52509
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note I didn't followup on my proposal as I didn't have time to compare
bootstrap times (on a non-multilib platform it will likely even regress because
in stage3
we build both the host and the target libstdc++). The proposal also has gotten
a "hole" since we now bootstrap libsantizer (another waste of ressources)
because
of bootstrap-{a,ub}san and friends. That one as well should be a non-bootstrap
target module and bootstrap-{a,ub}san should add a host module for
libsanitizer.
I'm also sure that libvtv doesn't need bootstrapping if libstdc++ becomes a
target module.
That is, we have to watch dependences between these modules.
Hmm, do we even build host modules in stage3? ... I think we don't need them.
