Function u8x16_le
#[target_feature(enable = "simd128")]
pub fn u8x16_le(a: v128, b: v128) -> v128Compares two 128-bit vectors as if they were two vectors of 16 eight-bit unsigned integers.
Returns a new vector where each lane is all ones if the lane-wise left element is less than the right element, or all zeros otherwise.