test_vmrglw128_1:
  #_ REGISTER_IN v3 [11111111, 22222222, 33333333, 44444444]
  #_ REGISTER_IN v4 [AAAAAAAA, BBBBBBBB, CCCCCCCC, DDDDDDDD]
  vmrglw128 v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [11111111, 22222222, 33333333, 44444444]
  #_ REGISTER_OUT v4 [AAAAAAAA, BBBBBBBB, CCCCCCCC, DDDDDDDD]
  #_ REGISTER_OUT v5 [33333333, CCCCCCCC, 44444444, DDDDDDDD]
