[Bug target/118131] [15 regression] ICE in gcc.c-torture/execute/loop-13.c after g:4f4e13dd235bba9c706948a3ecb3e530dd68aad1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118131

--- Comment #1 from Christophe Lyon <clyon at gcc dot gnu.org> ---
This is because arm.cc:arm_attr_length_move_neon() does not handle the new MVE
struct modes, which correspond to OImode and XImode.

Adding them leads to a crash later because in neon.md we have
(define_split
  [(set (match_operand:OI 0 "s_register_operand" "")
        (match_operand:OI 1 "s_register_operand" ""))]
which does not support the new modes either.