func traceHeapObjectID(addr uintptr) traceArg {
	return traceArg(uint64(addr)-trace.minPageHeapAddr) / minHeapAlign
}

// GoroutineStackExists records that a goroutine stack already exists at address base with the provided size.
func (tl traceLocker) GoroutineStackExists(base, size uintptr) {
	order := traceCompressStackSize(size)