contract C {
    u256 const LEN = 3;
    u256[LEN] a;

    fn c(u256[LEN]  _a) {
        a = _a;
    }
}

// ====
// compileViaYul: also
// ----
// fn c(): 1, 2, 3  ->
// gas irOptimized: 142640
// gas legacy: 183490
// gas legacyOptimized: 151938
// a(u256): 0  -> 1
// a(u256): 1  -> 2
// a(u256): 2  -> 3