    x |= x >> 1;
    x |= x >> 2;
    x |= x >> 4;
    x |= x >> 8;
    x |= x >> 16;
    x |= x >> 32;

Isn't there another way to do this without so many data races?

I feel like this should be

   x |= x >> 1 | x >> ??? ...

▲ gpderetta 6 months ago | parent [-]

By data races I assume you actually mean data dependencies?

	▲	hinkley 6 months ago \| parent [-]
		Oops. Yes.