1 /* 2 ** 3 ** Copyright 2009, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #include <emmintrin.h> 19 #include "SkUtils_opts_SSE2.h" 20 21 void sk_memset16_SSE2(uint16_t *dst, uint16_t value, int count) 22 { 23 SkASSERT(dst != NULL && count >= 0); 24 25 // dst must be 2-byte aligned. 26 SkASSERT((((size_t) dst) & 0x01) == 0); 27 28 if (count >= 32) { 29 while (((size_t)dst) & 0x0F) { 30 *dst++ = value; 31 --count; 32 } 33 __m128i *d = reinterpret_cast<__m128i*>(dst); 34 __m128i value_wide = _mm_set1_epi16(value); 35 while (count >= 32) { 36 _mm_store_si128(d++, value_wide); 37 _mm_store_si128(d++, value_wide); 38 _mm_store_si128(d++, value_wide); 39 _mm_store_si128(d++, value_wide); 40 count -= 32; 41 } 42 dst = reinterpret_cast<uint16_t*>(d); 43 } 44 while (count > 0) { 45 *dst++ = value; 46 --count; 47 } 48 } 49 50 void sk_memset32_SSE2(uint32_t *dst, uint32_t value, int count) 51 { 52 SkASSERT(dst != NULL && count >= 0); 53 54 // dst must be 4-byte aligned. 55 SkASSERT((((size_t) dst) & 0x03) == 0); 56 57 if (count >= 16) { 58 while (((size_t)dst) & 0x0F) { 59 *dst++ = value; 60 --count; 61 } 62 __m128i *d = reinterpret_cast<__m128i*>(dst); 63 __m128i value_wide = _mm_set1_epi32(value); 64 while (count >= 16) { 65 _mm_store_si128(d++, value_wide); 66 _mm_store_si128(d++, value_wide); 67 _mm_store_si128(d++, value_wide); 68 _mm_store_si128(d++, value_wide); 69 count -= 16; 70 } 71 dst = reinterpret_cast<uint32_t*>(d); 72 } 73 while (count > 0) { 74 *dst++ = value; 75 --count; 76 } 77 } 78
