[llvm] change contents of ScalarEvolution from private to protected (PR #83052)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

Not a fan of doing this, as a matter of principle. What you are doing in MustExecuteScalarEvolution is a bad idea, and I do not want to endorse it. You should try to upstream your changes, though I suspect that at least some of them are better handled in other ways.

https://github.com/llvm/llvm-project/pull/83052