[llvm] [LoopIdiomRecognize] Replacing the idiom of counting trailing zeros with the intrinsic cttz (PR #87820)

[Craig Topper via llvm-commits]

topperc wrote:

Can point to example code that uses this idiom? There are so many potential variations of these idioms I'd just like to know where it shows up.

https://github.com/llvm/llvm-project/pull/87820