Start to vectorize SkTileGrid.

bench/GeometryBench.cpp

Index: bench/GeometryBench.cpp
diff --git a/bench/GeometryBench.cpp b/bench/GeometryBench.cpp
index a5c4643f9e32b384a30eab0471e6eb92fb06de6c..65398fa34a0faaa974fae2f6069ce9a1f4629c62 100644
--- a/bench/GeometryBench.cpp
+++ b/bench/GeometryBench.cpp
@@ -6,6 +6,7 @@
  */
 
 #include "Benchmark.h"
+#include "Sk4x.h"
 #include "SkGeometry.h"
 #include "SkRandom.h"
 #include "SkRect.h"
@@ -44,6 +45,9 @@ public:
     GeoRectBench(const char suffix[]) : GeometryBench(suffix) {}
 
 protected:
+    // void* vptr;
+    size_t align_fRects_to_16Bytes[sizeof(void*) == 8 ? 1 : 3];
+
     SkRect fRects[2048];
 
     virtual void onPreDraw() {
@@ -97,7 +101,7 @@ protected:
 class GeoRectBench_Intersects : public GeoRectBench {
 public:
     GeoRectBench_Intersects() : GeoRectBench("rect_Intersects") {}
-    
+
 protected:
     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         for (int outer = 0; outer < loops; ++outer) {
@@ -113,7 +117,7 @@ protected:
 class GeoRectBench_sort : public GeoRectBench {
 public:
     GeoRectBench_sort() : GeoRectBench("rect_sort") {}
-    
+
 protected:
     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         for (int outer = 0; outer < loops; ++outer) {
@@ -129,3 +133,59 @@ DEF_BENCH( return new GeoRectBench_intersect_rect; )
 DEF_BENCH( return new GeoRectBench_Intersects; )
 
 DEF_BENCH( return new GeoRectBench_sort; )
+
+class GeoRectBench_sort_4f : public GeoRectBench {
+public:
+    GeoRectBench_sort_4f() : GeoRectBench("rect_sort_4f") { }
+
+protected:
+    static SkRect Sort(const SkRect& rect) {
+        // To sort:
+        //   left, right = minmax(left, right)
+        //   top, bottom = minmax(top, bottom)
+        Sk4f ltrb(&rect.fLeft),
+             rblt = ltrb.zwxy(),
+             ltlt = Sk4f::Min(ltrb, rblt),  // Holds (2 copies of) new left and top.
+             rbrb = Sk4f::Max(ltrb, rblt),  // Holds (2 copies of) new right and bottom.
+             sort = Sk4f::XYAB(ltlt, rbrb);
+
+        SkRect sorted;
+        sort.store(&sorted.fLeft);
+        return sorted;
+    }
+
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+        for (int outer = 0; outer < loops; ++outer) {
+            for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
+                fRects[i] = Sort(fRects[i]);
+            }
+        }
+    }
+};
+DEF_BENCH( return new GeoRectBench_sort_4f; )
+
+class GeoRectBench_Intersects_4f : public GeoRectBench {
+public:
+    GeoRectBench_Intersects_4f() : GeoRectBench("rect_Intersects_4f") {}
+
+protected:
+    static bool Intersects(const SkRect& a, const SkRect& b) {
+        Sk4f r1(&a.fLeft),
+             r2(&b.fLeft),
+             lt = Sk4f::XYAB(r1, r2),  // a.L a.T b.L b.T <
+             rb = Sk4f::ZWCD(r2, r1);  // b.R b.B a.R a.B ?
+        return lt.lessThan(rb).allTrue();
+    }
+
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
+        for (int outer = 0; outer < loops; ++outer) {
+            int count = 0;
+            for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
+                count += Intersects(fRects[0], fRects[i]);
+            }
+            this->virtualCallToFoilOptimizers(count);
+        }
+    }
+};
+DEF_BENCH( return new GeoRectBench_Intersects_4f; )
+