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++, value_wide); 30 _mm_store_si128(d++, value_wide); 31 _mm_store_si128(d++, value_wide); 32 count -= 32; 33 } 34 dst = reinterpret_cast<uint16_t*>(d); 35 } 36 while (count > 0) { 37 *dst++ = value; 38 --count; 39 } 40 } 41 42 void sk_memset32_SSE2(uint32_t *dst, uint32_t value, int count) 43 { 44 SkASSERT(dst != NULL && count >= 0); 45 46 // dst must be 4-byte aligned. 47 SkASSERT((((size_t) dst) & 0x03) == 0); 48 49 if (count >= 16) { 50 while (((size_t)dst) & 0x0F) { 51 *dst++ = value; 52 --count; 53 } 54 __m128i *d = reinterpret_cast<__m128i*>(dst); 55 __m128i value_wide = _mm_set1_epi32(value); 56 while (count >= 16) { 57 _mm_store_si128(d++, value_wide); 58 _mm_store_si128(d++, value_wide); 59 _mm_store_si128(d++, value_wide); 60 _mm_store_si128(d++, value_wide); 61 count -= 16; 62 } 63 dst = reinterpret_cast<uint32_t*>(d); 64 } 65 while (count > 0) { 66 *dst++ = value; 67 --count; 68 } 69 } 70
