Kenneth Graunke <kenn...@whitecape.org> writes: > The OWord Dual Block Write message doesn't have a response length, so it > was surprising to a non-null destination register in the disassembly. > Not only that, but seeing g0 was especially confusing, as writing to g0 > would destroy critical payload information that's needed for most SEND > messages. > > I figured it would be worth adding a comment indicating the destination > register doesn't matter, but the writemask does (and is why we don't use > the null register.)
Wait, is specifying masks/predication on NULL illegal? I wonder.
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