__llvm_cxxeh_allocate_exception
__llvm_cxxeh_free_exception
__llvm_cxxeh_throw
__llvm_cxxeh_call_terminate
__llvm_cxxeh_current_uncaught_exception_isa
__llvm_cxxeh_begin_catch
__llvm_cxxeh_begin_catch_if_isa
__llvm_cxxeh_end_catch
__llvm_cxxeh_rethrow
__llvm_cxxeh_get_last_caught
__llvm_cxxeh_check_eh_spec