[clang] [Clang] Add support for fp when using min_fetch/max_fetch atomics (PR #160330)

[via cfe-commits]

CarolineConcatto wrote:

@Amichaxx I think you need to update your tests. It is failing:
TEST 'Clang :: Sema/atomic-ops.c' FAILED *
You should re-generate the CHECK lines.

https://github.com/llvm/llvm-project/pull/160330