[llvm] Reland [llvm] add GenericFloatingPointPredicateUtils #140254 (PR #141065)

[Steven Wu via llvm-commits]

cachemeifyoucan wrote:

This breaks Darwin bots: https://green.lab.llvm.org/job/llvm.org/job/clang-stage2-Rthinlto/762/

It is a module layering violation to include LLVM_IR from Support or ADT. Please revert.

https://github.com/llvm/llvm-project/pull/141065