[llvm] [TableGen][DecoderEmitter] Repurpose Filter class (PR #155065)

[Dmitry Vasilyev via llvm-commits]

slydiman wrote:

It seems the following buildbots are broken after this patch

https://lab.llvm.org/buildbot/#/builders/195/builds/13641
https://lab.llvm.org/buildbot/#/builders/197/builds/8319

Please take a look.

https://github.com/llvm/llvm-project/pull/155065