[llvm-branch-commits] [TableGen] Support HwMode registers in CompressInstEmitter (PR #203599)

[Alexander Richardson via llvm-branch-commits]

arichardson wrote:

<!-- spr-dependencies -->
This is a stacked pull request managed by [spr](https://github.com/spacedentist/spr). The following pull requests must be merged before this one:

<!-- spr-dependencies-list-start -->
- #201931
- #177073
- #203598
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https://github.com/llvm/llvm-project/pull/203599