Optimize edge value resolution

Summary:
Noticed in simpleperf this was a very hot method, showing 8ms spent in these methods in our sample application. By splitting the method out in a horizontal and vertical variant we can simplify cases enormously and check for begin/end in one go.

Changelog: [Internal]

Reviewed By: SidharthGuglani

Differential Revision: D27010008

fbshipit-source-id: 22fed58c7476e1d716b0191b55997c7a06e63223

yoga/YGNode.h

@@ -193,6 +193,17 @@ public:
     return resolvedDimensions_[index];
   }
 
+  static CompactValue computeEdgeValueForColumn(
+      const YGStyle::Edges& edges,
+      YGEdge edge,
+      CompactValue defaultValue);
+
+  static CompactValue computeEdgeValueForRow(
+      const YGStyle::Edges& edges,
+      YGEdge rowEdge,
+      YGEdge edge,
+      CompactValue defaultValue);
+
   // Methods related to positions, margin, padding and border
   YGFloatOptional getLeadingPosition(
       const YGFlexDirection axis,