[Bug middle-end/121322] UBSAN error in find_bswap_or_nop (shift exponent 64 is too large for 64-bit type 'long unsigned int')

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121322

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think for count == 0 there is no point to rotate and try further, we've
already checked that is_bswap_or_nop_p (tmp_n, cmpxchg, cmpnop, mask, bswap) is
false.