Function rustc_llvm_proxy::proxy::LLVMBuildAtomicCmpXchg

#[no_mangle]
pub unsafe extern "C" fn LLVMBuildAtomicCmpXchg(
    B: LLVMBuilderRef,
    Ptr: LLVMValueRef,
    Cmp: LLVMValueRef,
    New: LLVMValueRef,
    SuccessOrdering: LLVMAtomicOrdering,
    FailureOrdering: LLVMAtomicOrdering,
    SingleThread: LLVMBool
) -> LLVMValueRef