[clang] [flang] [mlir] [flang,acc] Support -ffp-maxmin-behavior option in lowering. (PR #184730)

[Tarun Prabhu via cfe-commits]

https://github.com/tarunprabhu commented:

Thanks Slava. I mostly looked at the driver, tests and documentation.

https://github.com/llvm/llvm-project/pull/184730