https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84226
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The documentation terminology is weird, fixed-point there doesn't mean fixed point floats, but integral types, and I think by fixed-point here it actually means INTEGRAL_MODE_P modes. Vector bswap is at least from the simplify-rtx.c handling byteswap of each individual element of the vector rather than byte swap of all the bytes in the vector.
