{"ast_node_type":"variable","tokens":[{"end":51,"kind":"keyword","start":0,"text":"let"}]}
    let a = _mm256_setr_epi64x(100, 200, 500, 600);
unsafe fn test_mm256_permute2x128_si256() {
    let b = _mm256_setr_epi64x(300, 400, 700, 800);