test interpret
test run
target aarch64
target s390x
set enable_simd
target x86_64 has_sse3 has_ssse3 has_sse41

function %swidenlow_i8x16(i8x16) -> i16x8 {
block0(v0: i8x16):
    v1 = swiden_low v0
    return v1
}
; run: %swidenlow_i8x16([1 -2 3 -4 5 -6 7 -8 9 -10 11 -12 13 -14 15 -16]) == [1 -2 3 -4 5 -6 7 -8]

function %swidenlow_i16x8(i16x8) -> i32x4 {
block0(v0: i16x8):
    v1 = swiden_low v0
    return v1
}
; run: %swidenlow_i16x8([1 -2 3 -4 5 -6 7 -8]) == [1 -2 3 -4]

function %swidenlow_i32x4(i32x4) -> i64x2 {
block0(v0: i32x4):
    v1 = swiden_low v0
    return v1
}
; run: %swidenlow_i32x4([1 -2 3 -4]) == [1 -2]