[flang] [llvm] [mlir] [OpenMPIRBuilder] Emit __atomic_load and __atomic_compare_exchange libcalls for complex types in atomic update (PR #92364)

[Michael Kruse via llvm-commits]

Meinersbur wrote:

What happened to the idea to refactor the language-independent part of CGAtomic into LLVMFrontend to avoid duplicating the functionality?

https://github.com/llvm/llvm-project/pull/92364