[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:

Thanks @Meinersbur for the clarification. I'll work on these changes then. I think I'll begin from studying some existing functionality wherein Clang interfaces with LLVM Frontend, and then follow similar steps to refactor atomic libcall emission code into the LLVM Frontend. This should let Clang emit libcalls just as it does now. Finally, we can allow the IRBuilder to use this code in the LLVM Frontend to let Flang also depend upon the same code.

Could you suggest some existing functionality where Clang interfaces with LLVM frontend? I'll explore anyway; but if you have something in mind, please do share.

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