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

[via llvm-commits]

NimishMishra wrote:

> The code that gets called is `AtomicInfo::EmitAtomicUpdateLibcal` in `clang/lib/CodeGen/CGAtomic.cpp`. Is this the code that you used? Did you face any issue using this code?

Hi @kiranchandramohan. The main issue I faced was determining which of the two IRs (Clang codegen vs AtomicExpandPass) was the one we should try. I could not determine the same, so thought to send this initial PR once, and seek clarifications on the same.


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