[Bug rtl-optimization/90756] [7/8/9 Regression] g++ ICE in convert_move, at expr.c:218 on i686 and s390x

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90756

--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
6.x isn't supported, you are on your own.
That said, possible related changes that I remember include e.g. PR90139 and
PR78643.