After scouring the wilds of the internet and AMD technical sheets, here is a
concise summary or AMD GPU codename and architectures.  Now, I make no claim
to completeness nor absolute accuracy, but it should help decipher some of the
kernel, OpenCL, Mesa, etc, warning/error messages that pop up in logs.

          ----AMD GPU Codename and Architecture Reference----

Graphics  GPU           Alternative      Architecture  Product
Compute   Codename      Name
------------------------------------------------------------------------------
GFX803    Fiji          Pirate Islands   GCN 3.0       Radeon R9 Fury
GFX803    Polaris 20    Arctic Islands   GCN 4.0       RX570/580
GFX803    Polaris 30    Ellesmere        GCN 4.0       RX590
GFX900    VEGA 10       Greenland        GCN 5.0       RX VEGA 56/64/Pro
GFX901    VEGA 10
GFX902    RAVEN         Raven Ridge      GCN 5.0       Ryzen 2000/3000(G/GE)
                        Picasso
GFX904    VEGA 12                        GCN 5.0       Vega Pro 20 (MAC)
GFX906    VEGA 20                        GCN 5.1
GFX907    VEGA 20       Moonshot         GCN 5.1       Radeon VII/Pro VII
GFX908    ARCTURUS                       CDNA 1        Instinct MI100
GFX90A    Aldebaran                      CDNA 2        Instinct MI200
gfx90c    Cezanne      Green Serdine     GCN 5.1       Ryzen 5000
GFX909    RAVEN2                         GCN 5.0       TBC
GFX909    RENOIR                         GCN 5.0       Ryzen 4000(H/U/G)
GFX1010   NAVI 10                        RDNA 1        RX 5700/5600(M/XT)
GFX1011   NAVI 12                        RDNA 1        PRO 5600M (MAC)
GFX1012   NAVI 14                        RDNA 1        RX 5500 (M/XT)
GFX1030   NAVI 21       Big Navi         RDNA 2        RX 6950/6900/6800 Series
                        Sienna Cichlid
GFX1031   NAVI 22       Navy Flounder    RDNA 2        RX 6700 Series, 6800M
GFX1032   NAVI 23       Dimgrey Cavefish RDNA 2        RX 6600/6650 Series
GFX1033   NAVI 24       Beige Goby       RDNA 2        RX 6500/6400 Series
GFX1033   Van Gogh      Aerith           RDNA 2        Steam Deck
GFX1036   Raphael                        RDNA 2        Ryzen 7000? 128SP
GFX1040   Van Gogh Lite                  RDNA 2        Ryzen 7000?
          Mendocino
GFX1100   Navi 31       Plum Bonito      RDNA 3        RX 7900/7950/7990 Series
GFX1101   Navi 32       Wheat Nas        RDNA 3        RX 7700/7800 Series
GFX1102   Navi 33       Hotpink Bonefish RDNA 3        Radeon RX 7600 Series
GFX1103   Navi 3X       Phoenix Point    RDNA 3        Ryzen 7040
                        Dragon Range     RDNA 3        Ryzen 7045
GFX12xx   Navi 4x                        RDNA 4        RX 8000
GFX1200   Navi 48                        RDNA 4        RX 8000 Series
GFX1201   Navi 44                        RDNA 4
------------------------------------------------------------------------------

As time permits, I will try to update a copy in the of this information
'Reading Room/Library' section.