[llvm] [InstCombine] Generalize select equiv fold for plain condition (PR #85663)

[Nikita Popov via llvm-commits]

nikic wrote:

Hm, it looks like this approach has a large compile-time impact: http://llvm-compile-time-tracker.com/compare.php?from=8d142043e8c4c1144cd94f39f3cc7c88da5cec3f&to=4ac3010b8676126d3afa1e707371adac6b7acb9e&stat=instructions%3Au In that case I guess the dedicated fold from the other PR is better, assuming it doesn't have this impact.

https://github.com/llvm/llvm-project/pull/85663