[Bug target/84226] [8 Regression] ICE in simplify_const_unary_operation, at simplify-rtx.c:1974 on ppc64le

[jakub at gcc dot gnu.org]

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.