[llvm] [InstCombine] Swap out range metadata to range attribute for cttz/ctlz/ctpop (PR #88776)

[Andreas Jonson via llvm-commits]

andjo403 wrote:

will try to split out the poison handling, I tried to do that first but was not able come up with some test that miscompiled.
there is test that fails in Transforms/InstCombine/ispow2.ll if the poison handling is removed from here so then the poison handling PR needs to be done first

https://github.com/llvm/llvm-project/pull/88776