[Bug rtl-optimization/116389] [avr][15 regression] ICE in extract_constrain_insn for avrtiny and -O2

[law at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116389

--- Comment #2 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Yes, a paradoxical is precisely what we expect and want here.  This sounds like
either a reload bug (definitely possible, I'm still chasing one of these over
on the m68k) or a backend bug with avr.