[llvm-branch-commits] [IR][NFC] Drop vtable from PassConcept/PassModel (PR #208168)

[Alexis Engelke via llvm-branch-commits]

aengelke wrote:

[c-t-t](https://llvm-compile-time-tracker.com/compare.php?from=3f482e1e96d67c83735811be48534f0b2082a668&to=41e55aa7bcd1aafed3415690719a9622f8d74c85&stat=instructions:u) shows a tiny win on instructions:u, a 0.2-0.6% win on max-rss, a 0.28% win on size-file, and a 2.24% win on size-data.

https://github.com/llvm/llvm-project/pull/208168