// during the stack growth check. In that case, the function has
		// not yet had a chance to do any writes to SP and is safe to unwind.
		// isAsyncSafePoint does not allow assembly functions to be async preempted,
		// and preemptPark double-checks that SPWRITE functions are not async preempted.
		// So for GC stack traversal, we can safely ignore SPWRITE for the innermost frame,