[Bug target/88778] Odd Complex float load

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88778

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
We need to update read_complex_part and write_complex_part to manipulate
SCmode with vector operations instead of 64-bit integers.