Function _mm_cmpestrm 

pub fn _mm_cmpestrm(
    a: __m128i,
    la: i32,
    b: __m128i,
    lb: i32,
    const IMM8: i32,
) -> __m128i

Available on x86 and target feature sse4.2 only.

Compares packed strings in a and b with lengths la and lb using the control in IMM8, and return the generated mask.

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