[Bug middle-end/105781] GCC does not unroll auto-vectorized loops.

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105781

Hongtao.liu <crazylht at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |crazylht at gmail dot com

--- Comment #4 from Hongtao.liu <crazylht at gmail dot com> ---
Just note we can also use *#pragma GCC unroll n* to specify the unrolling
factor.

#pragma GCC unroll 4
void double_elements(int* f, int* l, int v) {
    while (f != l) {
        *f = *f + *f;
        ++f;
    }
}