[llvm] [IR] Add new Range attribute using new ConstantRange Attribute type (PR #83171)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> @dtcxzyw I have started to prepare a PR that will use the new attribute in among other things llvm::computeConstantRange will have more time this weekend to work on it.
> 
> I also need help with merging this PR as I do not have permission to do that.

Thank you!

https://github.com/llvm/llvm-project/pull/83171