https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83530
--- Comment #8 from Andrey Belevantsev <abel at gcc dot gnu.org> --- (In reply to Pat Haugen from comment #7) > Assuming this is a latent selective scheduling bug since I can reproduce > with r243865 by adding -fsched-pressure --param sched-pressure-algorithm=2. > Looking... I will take a look. The ICE is within the code that models the scheduling loop in order to get the proper insn ticks and everything for later MD processing (it is equivalent to always scheduling the next insn). Either there is an issue in that loop that wasn't uncovered anywhere but powerpc or there is some subtlety in the powerpc cpu model that is triggered there. It is not very pleasant to find out and fix usually so it will take time.