Add DelayInfo struct

Signed-off-by: Clifford Wolf <clifford@clifford.at>

common/design.h

@@ -52,7 +52,7 @@ struct NetInfo
 	dict<IdString, std::string> attrs;
 
 	// wire -> (uphill_wire, delay)
-	dict<WireId, std::pair<WireId, float>> wires;
+	dict<WireId, std::pair<WireId, DelayInfo>> wires;
 };
 
 enum PortType

dummy/chip.h

@@ -22,6 +22,14 @@
 #ifndef CHIP_H
 #define CHIP_H
 
+struct DelayInfo
+{
+	float delay = 0;
+
+	float raiseDelay() { return delay; }
+	float fallDelay() { return delay; }
+};
+
 typedef IdString BelType;
 typedef IdString PortPin;
 
@@ -111,7 +119,7 @@ struct WireRange
 struct WireDelay
 {
 	WireId wire;
-	float delay;
+	DelayInfo delay;
 };
 
 struct WireDelayIterator

ice40/chip.h

@@ -22,6 +22,14 @@
 #ifndef CHIP_H
 #define CHIP_H
 
+struct DelayInfo
+{
+	float delay = 0;
+
+	float raiseDelay() { return delay; }
+	float fallDelay() { return delay; }
+};
+
 // -----------------------------------------------------------------------
 
 enum BelType
@@ -175,7 +183,7 @@ struct AllWiresRange
 struct WireDelay
 {
 	WireId wire;
-	float delay;
+	DelayInfo delay;
 };
 
 struct WireDelayIterator
@@ -188,7 +196,7 @@ struct WireDelayIterator
 	WireDelay operator*() const {
 		WireDelay ret;
 		ret.wire.index = ptr->wire_index;
-		ret.delay = ptr->delay;
+		ret.delay.delay = ptr->delay;
 		return ret;
 	}
 };