[Bug target/68484] _mm_storel_epi64((__m128i *)x, m); does nothing if "x" is a "volatile" ptr

[vvsed at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68484

--- Comment #8 from Vladimir Sedach <vvsed at hotmail dot com> ---
Adding "static" to "volatile" "solves" the problem:

static int * volatile x = _x;

I'm using this trick to avoid aggressive optimization when measuring the time
of execution. The compiler does not skip calculations leading to saving the
result in a loop.