https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79058
--- Comment #26 from Vladimir Makarov <vmakarov at gcc dot gnu.org> --- (In reply to Dominik Vogt from comment #24) > While you're at it ... does it have the same or a similar cause as the Avr > bug? > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78883 > > (A HImode quantity got allocated to r31+r32 (r31 is the last hardreg), in > presence of a paradoxical subreg of memory.) It might be. As for the current PR, the problem was in wrong IRA (not LRA) assignment.