// arm64:-"MOVH"
	ret += int64(int16(x & 0x7fff))

	// arm64:-"MOVB"
	ret += int64(int8(x & 0x7f))

	return ret
}

// corner cases that sign extension must not be omitted

func shouldSignEXT(x int) int64 {
	t1 := int32(x)

	var ret int64

	// arm64:"MOVW"
	ret += int64(t1 & (-1))

	// arm64:"MOVW"
	ret += int64(int32(x & 0x80000000))

	// arm64:"MOVW"