More SSE2-ification; fix for gcc -msse2.
Review URL: http://codereview.appspot.com/154163
git-svn-id: http://skia.googlecode.com/svn/trunk@428 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/opts/SkUtils_opts_SSE2.cpp b/src/opts/SkUtils_opts_SSE2.cpp
new file mode 100644
index 0000000..0537033
--- /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;
+ }
+}