benchmark only the opt version of rotate.

BUG=155
TEST=sudo LIBYUV_REPEAT=1000 nice --5 ./libyuv_unittest --gtest_filter=*Rotate*
Review URL: https://webrtc-codereview.appspot.com/939029

git-svn-id: http://libyuv.googlecode.com/svn/trunk@502 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 501
+Version: 502
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 501
+#define LIBYUV_VERSION 502
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/scale.cc

@@ -105,7 +105,6 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
  *
  */
 
-
 // Constants for SSSE3 code
 #elif !defined(YUV_DISABLE_ASM) && \
     (defined(_M_IX86) || defined(__i386__) || defined(__x86_64__))
@@ -225,6 +224,7 @@ static void ScaleRowDown2_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
     ret
   }
 }
+
 // Blends 32x2 rectangle to 16x1.
 // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 16 byte aligned.
 __declspec(naked) __declspec(align(16))
@@ -299,6 +299,7 @@ static void ScaleRowDown2_Unaligned_SSE2(const uint8* src_ptr,
     ret
   }
 }
+
 // Blends 32x2 rectangle to 16x1.
 // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 16 byte aligned.
 __declspec(naked) __declspec(align(16))
@@ -1241,9 +1242,7 @@ static void ScaleFilterRows_Unaligned_SSSE3(uint8* dst_ptr,
     ret
   }
 }
-
 #elif !defined(YUV_DISABLE_ASM) && (defined(__x86_64__) || defined(__i386__))
-
 // GCC versions of row functions are verbatim conversions from Visual C.
 // Generated using gcc disassembly on Visual C object file:
 // objdump -D yuvscaler.obj >yuvscaler.txt
@@ -1313,6 +1312,7 @@ void ScaleRowDown2Int_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
 #endif
   );
 }
+
 static void ScaleRowDown2_Unaligned_SSE2(const uint8* src_ptr,
                                          ptrdiff_t src_stride,
                                          uint8* dst_ptr, int dst_width) {
@@ -2569,7 +2569,6 @@ static void ScaleFilterRows_C(uint8* dst_ptr,
   int y0_fraction = 256 - y1_fraction;
   const uint8* src_ptr1 = src_ptr + src_stride;
 
-
   for (int x = 0; x < dst_width - 1; x += 2) {
     dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
     dst_ptr[1] = (src_ptr[1] * y0_fraction + src_ptr1[1] * y1_fraction) >> 8;

unit_test/rotate_argb_test.cc

@@ -56,12 +56,10 @@ static int ARGBTestRotate(int src_width, int src_height,
 
   MaskCpuFlags(0);  // Disable all CPU optimization.
   double c_time = get_time();
-  for (i = 0; i < runs; ++i) {
-    ARGBRotate(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
-               dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
-               src_width, src_height, mode);
-  }
-  c_time = (get_time() - c_time) / runs;
+  ARGBRotate(src_argb + (src_stride_argb * b) + b * 4, src_stride_argb,
+             dst_argb_c + (dst_stride_argb * b) + b * 4, dst_stride_argb,
+             src_width, src_height, mode);
+  c_time = (get_time() - c_time);
 
   MaskCpuFlags(-1);  // Enable all CPU optimization.
   double opt_time = get_time();