[Bug tree-optimization/94566] conversion between std::strong_ordering and int

[oschonrock at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94566

--- Comment #8 from Oliver Schönrock <oschonrock at gmail dot com> ---
how about:

#include <bit>
#include <compare>
#include <cstdint>

int conv3(std::strong_ordering s){
    return std::bit_cast<std::int8_t>(s);
}
std::strong_ordering conv4(int i){
    return std::bit_cast<std::strong_ordering>(static_cast<std::int8_t>(i));
}


conv3(std::strong_ordering):
        movsbl  %dil, %eax
        ret
conv4(int):
        movl    %edi, %eax
        ret


https://godbolt.org/z/szP5MGq4T