[llvm] [ConstantFPRange] Outline special member functions (PR #163814)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

Close as https://github.com/llvm/llvm-project/pull/164073 was landed. Now we don't benefit from this patch: https://llvm-compile-time-tracker.com/compare.php?from=fa76578ca7f25cad571c5ec257565a132e9e6a6d&to=1077959dd26efb0ac14a956262c846b6097e42df&stat=instructions:u

https://github.com/llvm/llvm-project/pull/163814