more optimizations: move port states into gates, inline net queue checks

sim/port.lua

@@ -17,17 +17,15 @@ PortDirections = {
 
 Port = {}
 
-function Port.new(type, direction, position, causeupdate, idx)
+function Port.new(type, direction, position, causeupdate, idx, gate)
 	local o = {
-		--state = ffi.new("long long", 0),
-		state = 0,
 		group = nil,
 		
 		type = type,
 		direction = direction,
 		position = position,
 		causeupdate = causeupdate,
-		gate = nil,
+		gate = gate,
 		idx = idx,
 	}
 	return o
@@ -50,12 +48,9 @@ function Port.getgate(port)
 	return port.gate
 end
 
-function Port.setgate(port, gate)
-	port.gate = gate
-end
-
 function Port.setgroup(port, group)
 	port.group = group
+	--Port.getgate(port)[port.idx*2] = group
 	Port.getgate(port).port_nets[port.idx] = group
 end
 
@@ -68,5 +63,5 @@ function Port.gettype(port)
 end
 
 function Port.getstate(port)
-	return port.state
+	return Port.getgate(port).port_states[port.idx]
 end