[Bug bootstrap/71816] [7 Regression] bootstrap broken on multiple targets

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71816

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 38870
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38870&action=edit
untested patch

I am testing this patch, it was a bit optimistic to simply replace refs I
guess.