[Bug target/110182] Vector(2) cast from double to float and subtraction seems to produce incorrect results at -O2 and above

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110182

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>but not -O3.

Oh that is because the vectorizer is not enabled at -O2 in GCC 11 but is for
GCC 12+.