[PATCH] D105423: Add support for Opaque as a LowLevelType

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D105423#2864145 <https://reviews.llvm.org/D105423#2864145>, @pmatos wrote:

> OK - I feel like this became an easier diff to deal with by doing opaques as scalar of size 0. However, to be honest I am not totally convinced yet it's useful to introduce the idea of "opaque" here. Just like we create MVT's that are `Fixed(0)` maybe we should just allow LLT's to have `scalar(0)` calls and remove this "opaque" concept here. What do others think?

That would be a bit nicer than taking a bit just for this. However some places are relying on invalid LLTs that are all zeroes currently


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https://reviews.llvm.org/D105423