No Branch

for (auto i = 0u; i < arr.size(); ++i) {
  if (arr[i] > 128)
    sum += arr[i];
}

for (arr) |x| {
    if (x > 128) sum +%= x;
}

^ This is Faster?

for (auto i = 0u; i < arr.size(); ++i) {
  sum += arr[i] * (arr[i] > 128);
}

for (arr) |x| {
    sum +%= x * @as(i32, @intFromBool(x > 128));
}

^ This is Faster?

* The benchmark is run under AMD Ryzen 9.

* For the full benchmark code, please refer here.

* For illustration purposes only, see FAQ for more details.