[PATCH] D137767: [AMDGPU] Make aperture registers 64 bit
Matt Arsenault via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Nov 15 08:00:01 PST 2022
arsenm added a comment.
In D137767#3927154 <https://reviews.llvm.org/D137767#3927154>, @Pierre-vh wrote:
> Note: I can't use COPY in D137542 <https://reviews.llvm.org/D137542> because otherwise it'll "simplify" it and we end up with instructions that use the _HI register variants - which shouldn't be there and are just here because TableGen needs them/I get hundreds of crashes without it. It seems to assume there'll be sub1 for every reg in the class.
That either means we're missing a restriction or need a reserve
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