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78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/*
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* Copyright 2022 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <immintrin.h>
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#include <string.h>
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#include "native.h"
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static always_inline bool vec_cross_page(const void * p, size_t n) {
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#define PAGE_SIZE 4096
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return (((size_t)(p)) & (PAGE_SIZE - 1)) > (PAGE_SIZE - n);
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#undef PAGE_SIZE
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}
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static always_inline void memcpy4 (void *__restrict dp, const void *__restrict sp) {
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((uint32_t *)dp)[0] = ((const uint32_t *)sp)[0];
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}
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static always_inline void memcpy8 (void *__restrict dp, const void *__restrict sp) {
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((uint64_t *)dp)[0] = ((const uint64_t *)sp)[0];
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}
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static always_inline void memcpy16 (void *__restrict dp, const void *__restrict sp) {
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_mm_storeu_si128((void *)(dp), _mm_loadu_si128((const void *)(sp)));
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}
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static always_inline void memcpy32(void *__restrict dp, const void *__restrict sp) {
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#if USE_AVX2
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_mm256_storeu_si256((void *)dp, _mm256_loadu_si256((const void *)sp));
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#else
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_mm_storeu_si128((void *)(dp), _mm_loadu_si128((const void *)(sp)));
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_mm_storeu_si128((void *)(dp + 16), _mm_loadu_si128((const void *)(sp + 16)));
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#endif
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}
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static always_inline void memcpy64(void *__restrict dp, const void *__restrict sp) {
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memcpy32(dp, sp);
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memcpy32(dp + 32, sp + 32);
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}
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static always_inline void memcpy_p4(void *__restrict dp, const void *__restrict sp, size_t nb) {
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if (nb >= 2) { *(uint16_t *)dp = *(const uint16_t *)sp; sp += 2, dp += 2, nb -= 2; }
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if (nb >= 1) { *(uint8_t *) dp = *(const uint8_t *)sp; }
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}
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static always_inline void memcpy_p8(void *__restrict dp, const void *__restrict sp, ssize_t nb) {
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if (nb >= 4) { memcpy4(dp, sp); sp += 4, dp += 4, nb -= 4; }
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memcpy_p4(dp, sp, nb);
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}
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static always_inline void memcpy_p16(void *__restrict dp, const void *__restrict sp, size_t nb) {
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if (nb >= 8) { memcpy8(dp, sp); sp += 8, dp += 8, nb -= 8; }
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memcpy_p8(dp, sp, nb);
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}
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static always_inline void memcpy_p32(void *__restrict dp, const void *__restrict sp, size_t nb) {
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if (nb >= 16) { memcpy16(dp, sp); sp += 16, dp += 16, nb -= 16; }
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memcpy_p16(dp, sp, nb);
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}
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static always_inline void memcpy_p64(void *__restrict dp, const void *__restrict sp, size_t nb) {
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if (nb >= 32) { memcpy32(dp, sp); sp += 32, dp += 32, nb -= 32; }
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memcpy_p32(dp, sp, nb);
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}
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