I tested that v_swap_b16 can be encoded as VOP3, because the ISA doc doesn't list
it as a possible VOP3 opcode. VOP3 is nessecary to access v128+.
Foz-DB Navi31:
Totals from 32 (0.04% of 79395) affected shaders:
Instrs: 201865 -> 195168 (-3.32%)
CodeSize: 1082220 -> 1031228 (-4.71%); split: -4.71%, +0.00%
Latency: 2258198 -> 2238586 (-0.87%)
InvThroughput: 796731 -> 788934 (-0.98%)
Copies: 34514 -> 29220 (-15.34%)
VALU: 122457 -> 117163 (-4.32%)
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29143>
Georg Lehmann
80b8bbf0c5