mov    w0, 0x5678mov    w1, 0x1234bfi    w0, w1, 16, 16mov    x1, x0ubfx   x0, x1, 8, 8ubfiz  x0, x1, 8, 8bfxil  x0, x1, 0, 8bfxil  x0, xzr, 0, 8