https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111001
--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #2)
> I've briefly tried on a local gcc version 13.1.1 20230714
>
> While it doesn't crash, the sh_treg_combine2 pass seems to be stuck in an
> infinite loop. It produces a log file > 200 MByte.
It trips on the following insn:
(insn 1431 1430 179 19 (set (reg/v:DI 264 [ blk_cnt ])
(reg/v:DI 264 [ blk_cnt ])) "rw_bitmaps.c":341:11 -1
(nil))
... which is a reg-reg move on itself (i.e. a nop). For some reason this insn
is emitted by the split1 pass, which runs before sh_treg_combine2.
