[Bug inline-asm/85030] [6/7/8 Regression] internal compiler error: Floating point exception (validate_subreg())

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85030

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Trying to create BLKmode subreg of something (or subreg from BLKmode) is not
going to work well, but don't know the LRA code enough to know how to safely
get out to the point where we can error out on it.