Based on D72931
This adds a new feature called A16 which is enabled for gfx10.
gfx9 keeps the R128A16 feature so it can share all the instruction encodings
sebastian-ne on Feb 4 2020, 5:21 AM.Authored by
The encoding changes cause a mess with the feature definitions, but cleaning it up would require splitting up machine opcodes further which would bloat TableGen tables... so let's keep this approach. I'd ask for one cleanup though.