[llvm] [ValueTracking] Use dominating conditions in computeConstantRange (PR #210412)

[Nikita Popov via llvm-commits]

nikic wrote:

Compile-time: https://llvm-compile-time-tracker.com/compare.php?from=f0fd1ee64993eca0acb9d847ebf351ed7eb10bac&to=ab3de38a11973665edd40d9120b29008c9ee5a26&stat=instructions:u

https://github.com/llvm/llvm-project/pull/210412