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Optimize SkRect::sort()

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This optimization can reduce comparison and assignments. For
geo_rect_sort benchmark, performance improved to 1.63us from 3.28us.

BUG=skia:

Review URL: https://codereview.chromium.org/695443005
This commit is contained in:
qiankun.miao 2014-11-03 14:34:30 -08:00 committed by Commit bot
parent 87a94eb163
commit fb502f072f
1 changed files with 7 additions and 9 deletions
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16
include/core/SkRect.h
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@ -843,15 +843,13 @@ public:
* other. When this returns, left <= right && top <= bottom * other. When this returns, left <= right && top <= bottom
*/ */
void sort() { void sort() {
SkScalar min = SkMinScalar(fLeft, fRight); if (fLeft > fRight) {
SkScalar max = SkMaxScalar(fLeft, fRight); SkTSwap<SkScalar>(fLeft, fRight);
fLeft = min; }
fRight = max;
if (fTop > fBottom) {
min = SkMinScalar(fTop, fBottom); SkTSwap<SkScalar>(fTop, fBottom);
max = SkMaxScalar(fTop, fBottom); }
fTop = min;
fBottom = max;
} }
/** /**