[llvm] [LoopUnswitch] Improve algorithm of unswitch cost estimation (PR #106544)

[Sergey Kachkov via llvm-commits]

skachkov-sc wrote:

> Compile-time increase likely correlated with code size increase.

Looks like the biggest changes are in the lencod benchmark, and this is the only one that is affected by the patch (one more loop is unswitched)



https://github.com/llvm/llvm-project/pull/106544