Sk4px blit mask.

src/opts/SkBlitRow_opts_SSE2.cpp

Index: src/opts/SkBlitRow_opts_SSE2.cpp
diff --git a/src/opts/SkBlitRow_opts_SSE2.cpp b/src/opts/SkBlitRow_opts_SSE2.cpp
index 7f5b6779cf2d3d4a53d1d201ae3d1888b12cd31f..c017f7e4b3d1496f950e00f738dc30588226ecf9 100644
--- a/src/opts/SkBlitRow_opts_SSE2.cpp
+++ b/src/opts/SkBlitRow_opts_SSE2.cpp
@@ -301,54 +301,6 @@ void Color32A_D565_SSE2(uint16_t dst[], SkPMColor src, int count, int x, int y)
     }
 }
 
-void SkARGB32_A8_BlitMask_SSE2(void* device, size_t dstRB, const void* maskPtr,
-                               size_t maskRB, SkColor origColor,
-                               int width, int height) {
-    SkPMColor color = SkPreMultiplyColor(origColor);
-    size_t dstOffset = dstRB - (width << 2);
-    size_t maskOffset = maskRB - width;
-    SkPMColor* dst = (SkPMColor *)device;
-    const uint8_t* mask = (const uint8_t*)maskPtr;
-    do {
-        int count = width;
-        if (count >= 4) {
-            while (((size_t)dst & 0x0F) != 0 && (count > 0)) {
-                *dst = SkBlendARGB32(color, *dst, *mask);
-                mask++;
-                dst++;
-                count--;
-            }
-            __m128i *d = reinterpret_cast<__m128i*>(dst);
-            __m128i src_pixel = _mm_set1_epi32(color);
-            while (count >= 4) {
-                // Load 4 dst pixels
-                __m128i dst_pixel = _mm_load_si128(d);
-
-                // Set the alpha value
-                __m128i alpha_wide = _mm_cvtsi32_si128(*reinterpret_cast<const uint32_t*>(mask));
-                alpha_wide = _mm_unpacklo_epi8(alpha_wide, _mm_setzero_si128());
-                alpha_wide = _mm_unpacklo_epi16(alpha_wide, _mm_setzero_si128());
-
-                __m128i result = SkBlendARGB32_SSE2(src_pixel, dst_pixel, alpha_wide);
-                _mm_store_si128(d, result);
-                // Load the next 4 dst pixels and alphas
-                mask = mask + 4;
-                d++;
-                count -= 4;
-            }
-            dst = reinterpret_cast<SkPMColor*>(d);
-        }
-        while (count > 0) {
-            *dst= SkBlendARGB32(color, *dst, *mask);
-            dst += 1;
-            mask++;
-            count --;
-        }
-        dst = (SkPMColor *)((char*)dst + dstOffset);
-        mask += maskOffset;
-    } while (--height != 0);
-}
-
 // The following (left) shifts cause the top 5 bits of the mask components to
 // line up with the corresponding components in an SkPMColor.
 // Note that the mask's RGB16 order may differ from the SkPMColor order.