[Bug target/91880] ICE: segfault in hwloop_optimize

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91880

--- Comment #3 from jcmvbkbc at gcc dot gnu.org ---
(In reply to Martin Liška from comment #2)
> Do you have any guess how old is the issue?

I guess it's been there since gcc-5 when both call0 ABI support and HW loops
optimization were implemented for xtensa. It definitely reproduces with
gcc-7..9.