[clang] [llvm] Clang: emit llvm.minnum and llvm.maxnum with nsz always (PR #113133)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

We should also add new builtins (with the minnum/maxnum names) to get the stronger 2019 behavior 

https://github.com/llvm/llvm-project/pull/113133