[llvm] [LoopStrengthReduce] Mitigation of issues introduced by compilation time optimization in SolveRecurse. (PR #147588)

[Nikita Popov via llvm-commits]

nikic wrote:

Compile-time: https://llvm-compile-time-tracker.com/compare.php?from=ccd35e5b2f1438646d11c27eaa475f34681f9cbe&to=7d5b0e6a2821daa9b5e9cbc9c4d72c1614c5cd15&stat=instructions:u

https://github.com/llvm/llvm-project/pull/147588