[flang] [clang-tools-extra] [compiler-rt] [llvm] [clang] [Legalizer] Expand fmaximum and fminimum (PR #67301)

[Craig Topper via cfe-commits]

topperc wrote:

> LGTM. It will be great if you could add RISCV test too, but please don't let this block you.

RISC-V uses custom lowering. We should already have tests.

https://github.com/llvm/llvm-project/pull/67301