test_vmrghw_1:
  #_ REGISTER_IN v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_IN v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  vmrghw v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_OUT v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  #_ REGISTER_OUT v5 [00010203, 10111213, 04050607, 14151617]

test_vmrghw_2:
  #_ REGISTER_IN v3 [00000000, 00000001, 00000002, 00000003]
  #_ REGISTER_IN v4 [00000004, 00000005, 00000006, 00000007]
  vmrghw v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [00000000, 00000001, 00000002, 00000003]
  #_ REGISTER_OUT v4 [00000004, 00000005, 00000006, 00000007]
  #_ REGISTER_OUT v5 [00000000, 00000004, 00000001, 00000005]

test_vmrghw_3:
  #_ REGISTER_IN v3 [C0800000, C0400000, C0000000, BF800000]
  #_ REGISTER_IN v4 [00000000, 3F800000, 40000000, 40400000]
  vmrghw v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [C0800000, C0400000, C0000000, BF800000]
  #_ REGISTER_OUT v4 [00000000, 3F800000, 40000000, 40400000]
  #_ REGISTER_OUT v5 [C0800000, 00000000, C0400000, 3F800000]

test_vmrghw_4:
  #_ REGISTER_IN v3 [FFFFFFFC, FFFFFFFD, FFFFFFFE, FFFFFFFF]
  #_ REGISTER_IN v4 [00000000, 00000001, 00000002, 00000003]
  vmrghw v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [FFFFFFFC, FFFFFFFD, FFFFFFFE, FFFFFFFF]
  #_ REGISTER_OUT v4 [00000000, 00000001, 00000002, 00000003]
  #_ REGISTER_OUT v5 [FFFFFFFC, 00000000, FFFFFFFD, 00000001]