Optimize SkRect::sort()

include/core/SkRect.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRect_DEFINED
 #define SkRect_DEFINED
 
@@ skipping 825 matching lines @@
         return ir;
     }
 
     /**
      *  Swap top/bottom or left/right if there are flipped (i.e. if width()
      *  or height() would have returned a negative value.) This should be called
      *  if the edges are computed separately, and may have crossed over each
      *  other. When this returns, left <= right && top <= bottom
      */
     void sort() {
-        SkScalar min = SkMinScalar(fLeft, fRight);
-        SkScalar max = SkMaxScalar(fLeft, fRight);
-        fLeft = min;
-        fRight = max;
-        
-        min = SkMinScalar(fTop, fBottom);
-        max = SkMaxScalar(fTop, fBottom);
-        fTop = min;
-        fBottom = max;
+        if (fLeft > fRight) {
+            SkTSwap<SkScalar>(fLeft, fRight);
+        }
+
+        if (fTop > fBottom) {
+            SkTSwap<SkScalar>(fTop, fBottom);
+        }
     }
 
     /**
      *  cast-safe way to treat the rect as an array of (4) SkScalars.
      */
     const SkScalar* asScalars() const { return &fLeft; }
 
 #ifdef SK_DEVELOPER
     /**
      * Dumps the rect using SkDebugf. This is intended for Skia development debugging. Don't
      * rely on the existence of this function or the formatting of its output.
      */
     void dump() const {
         SkDebugf("{ l: %f, t: %f, r: %f, b: %f }", fLeft, fTop, fRight, fBottom);
     }
 #endif
 
 };
 
 #endif