[llvm] [DFAJumpThreading] Enable the pass by default (PR #83033)

[Nikita Popov via llvm-commits]

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

Enabling this pass by default currently causes a timeout in the stage 2 build: http://llvm-compile-time-tracker.com/show_error.php?commit=f3418c749f6060a5610020ef53a5d78e222be455

As such I can't provide up to date compile-time numbers, but the last time I tried there were unacceptably large regressions, and I don't think anything has changed since (http://llvm-compile-time-tracker.com/compare.php?from=387c1573f89117687f4b964ae3a90ea7c91a4f90&to=2a66b841e34f385331226d2b4f89fffd1840cda1&stat=instructions:u).

This pass is not production ready.

https://github.com/llvm/llvm-project/pull/83033