test_vmrghh_1:
  #_ REGISTER_IN v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_IN v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  vmrghh v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [00010203, 04050607, 08090A0B, 0C0D0E0F]
  #_ REGISTER_OUT v4 [10111213, 14151617, 18191A1B, 1C1D1E1F]
  #_ REGISTER_OUT v5 [00011011, 02031213, 04051415, 06071617]

test_vmrghh_2:
  #_ REGISTER_IN v3 [00000001, 00020003, 00040005, 00060007]
  #_ REGISTER_IN v4 [00080009, 000A000B, 000C000D, 000E000F]
  vmrghh v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [00000001, 00020003, 00040005, 00060007]
  #_ REGISTER_OUT v4 [00080009, 000A000B, 000C000D, 000E000F]
  #_ REGISTER_OUT v5 [00000008, 00010009, 0002000A, 0003000B]

test_vmrghh_3:
  #_ REGISTER_IN v3 [FFF8FFF9, FFFAFFFB, FFFCFFFD, FFFEFFFF]
  #_ REGISTER_IN v4 [00000001, 00020003, 00040005, 00060007]
  vmrghh v5, v3, v4
  blr
  #_ REGISTER_OUT v3 [FFF8FFF9, FFFAFFFB, FFFCFFFD, FFFEFFFF]
  #_ REGISTER_OUT v4 [00000001, 00020003, 00040005, 00060007]
  #_ REGISTER_OUT v5 [FFF80000, FFF90001, FFFA0002, FFFB0003]