1 2 /* 3 * Copyright 2009 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #include <emmintrin.h> 11 #include "SkUtils_opts_SSE2.h" 12 13 void sk_memset16_SSE2(uint16_t *dst, uint16_t value, int count) 14 { 15 SkASSERT(dst != NULL && count >= 0); 16 17 // dst must be 2-byte aligned. 18 SkASSERT((((size_t) dst) & 0x01) == 0); 19 20 if (count >= 32) { 21 while (((size_t)dst) & 0x0F) { 22 *dst++ = value; 23 --count; 24 } 25 __m128i *d = reinterpret_cast<__m128i*>(dst); 26 __m128i value_wide = _mm_set1_epi16(value); 27 while (count >= 32) { 28 _mm_store_si128(d , value_wide); 29 _mm_store_si128(d + 1, value_wide); 30 _mm_store_si128(d + 2, value_wide); 31 _mm_store_si128(d + 3, value_wide); 32 d += 4; 33 count -= 32; 34 } 35 dst = reinterpret_cast<uint16_t*>(d); 36 } 37 while (count > 0) { 38 *dst++ = value; 39 --count; 40 } 41 } 42 43 void sk_memset32_SSE2(uint32_t *dst, uint32_t value, int count) 44 { 45 SkASSERT(dst != NULL && count >= 0); 46 47 // dst must be 4-byte aligned. 48 SkASSERT((((size_t) dst) & 0x03) == 0); 49 50 if (count >= 16) { 51 while (((size_t)dst) & 0x0F) { 52 *dst++ = value; 53 --count; 54 } 55 __m128i *d = reinterpret_cast<__m128i*>(dst); 56 __m128i value_wide = _mm_set1_epi32(value); 57 while (count >= 16) { 58 _mm_store_si128(d , value_wide); 59 _mm_store_si128(d + 1, value_wide); 60 _mm_store_si128(d + 2, value_wide); 61 _mm_store_si128(d + 3, value_wide); 62 d += 4; 63 count -= 16; 64 } 65 dst = reinterpret_cast<uint32_t*>(d); 66 } 67 while (count > 0) { 68 *dst++ = value; 69 --count; 70 } 71 } 72
