1 files changed, 77 insertions, 0 deletions
diff --git a/src/opts/SkUtils_opts_SSE2.cpp b/src/opts/SkUtils_opts_SSE2.cpp
new file mode 100644
index 0000000000..053703399b
--- /dev/null
+++ b/src/opts/SkUtils_opts_SSE2.cpp
@@ -0,0 +1,77 @@
+/*
+ **
+ ** Copyright 2009, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License"); 
+ ** you may not use this file except in compliance with the License. 
+ ** You may obtain a copy of the License at 
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0 
+ **
+ ** Unless required by applicable law or agreed to in writing, software 
+ ** distributed under the License is distributed on an "AS IS" BASIS, 
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+ ** See the License for the specific language governing permissions and 
+ ** limitations under the License.
+ */
+
+#include <emmintrin.h>
+#include "SkUtils_opts_SSE2.h"
+ 
+void sk_memset16_SSE2(uint16_t *dst, uint16_t value, int count)
+{
+    SkASSERT(dst != NULL && count >= 0);
+
+    // dst must be 2-byte aligned.
+    SkASSERT((((size_t) dst) & 0x01) == 0);
+
+    if (count >= 32) {
+        while (((size_t)dst) & 0x0F) {
+            *dst++ = value;
+            --count;
+        }
+        __m128i *d = reinterpret_cast<__m128i*>(dst);
+        __m128i value_wide = _mm_set1_epi16(value);
+        while (count >= 32) {
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            count -= 32;
+        }
+        dst = reinterpret_cast<uint16_t*>(d);
+    }
+    while (count > 0) {
+        *dst++ = value;
+        --count;
+    }
+}
+ 
+void sk_memset32_SSE2(uint32_t *dst, uint32_t value, int count)
+{
+    SkASSERT(dst != NULL && count >= 0);
+
+    // dst must be 4-byte aligned.
+    SkASSERT((((size_t) dst) & 0x03) == 0);
+
+    if (count >= 16) {
+        while (((size_t)dst) & 0x0F) {
+            *dst++ = value;
+            --count;
+        }
+        __m128i *d = reinterpret_cast<__m128i*>(dst);
+        __m128i value_wide = _mm_set1_epi32(value);
+        while (count >= 16) {
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            _mm_store_si128(d++, value_wide);
+            count -= 16;
+        }
+        dst = reinterpret_cast<uint32_t*>(d);
+    }
+    while (count > 0) {
+        *dst++ = value;
+        --count;
+    }
+}