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Diffstat (limited to 'src/vppinfra/memcpy_avx2.h')
| -rw-r--r-- | src/vppinfra/memcpy_avx2.h | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/src/vppinfra/memcpy_avx2.h b/src/vppinfra/memcpy_avx2.h deleted file mode 100644 index ac29d2590a7..00000000000 --- a/src/vppinfra/memcpy_avx2.h +++ /dev/null @@ -1,249 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * 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. - */ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef included_clib_memcpy_avx2_h -#define included_clib_memcpy_avx2_h - -#include <stdint.h> -#include <x86intrin.h> -#include <vppinfra/warnings.h> - -/* *INDENT-OFF* */ -WARN_OFF (stringop-overflow) -/* *INDENT-ON* */ - -static inline void -clib_mov16 (u8 * dst, const u8 * src) -{ - __m128i xmm0; - - xmm0 = _mm_loadu_si128 ((const __m128i *) src); - _mm_storeu_si128 ((__m128i *) dst, xmm0); -} - -static inline void -clib_mov32 (u8 * dst, const u8 * src) -{ - __m256i ymm0; - - ymm0 = _mm256_loadu_si256 ((const __m256i *) src); - _mm256_storeu_si256 ((__m256i *) dst, ymm0); -} - -static inline void -clib_mov64 (u8 * dst, const u8 * src) -{ - clib_mov32 ((u8 *) dst + 0 * 32, (const u8 *) src + 0 * 32); - clib_mov32 ((u8 *) dst + 1 * 32, (const u8 *) src + 1 * 32); -} - -static inline void -clib_mov128 (u8 * dst, const u8 * src) -{ - clib_mov64 ((u8 *) dst + 0 * 64, (const u8 *) src + 0 * 64); - clib_mov64 ((u8 *) dst + 1 * 64, (const u8 *) src + 1 * 64); -} - -static inline void -clib_mov128blocks (u8 * dst, const u8 * src, size_t n) -{ - __m256i ymm0, ymm1, ymm2, ymm3; - - while (n >= 128) - { - ymm0 = - _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 0 * 32)); - n -= 128; - ymm1 = - _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 1 * 32)); - ymm2 = - _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 2 * 32)); - ymm3 = - _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 3 * 32)); - src = (const u8 *) src + 128; - _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 0 * 32), ymm0); - _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 1 * 32), ymm1); - _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 2 * 32), ymm2); - _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 3 * 32), ymm3); - dst = (u8 *) dst + 128; - } -} - -static inline void * -clib_memcpy_fast_avx2 (void *dst, const void *src, size_t n) -{ - uword dstu = (uword) dst; - uword srcu = (uword) src; - void *ret = dst; - size_t dstofss; - size_t bits; - - /** - * Copy less than 16 bytes - */ - if (n < 16) - { - if (n & 0x01) - { - *(u8 *) dstu = *(const u8 *) srcu; - srcu = (uword) ((const u8 *) srcu + 1); - dstu = (uword) ((u8 *) dstu + 1); - } - if (n & 0x02) - { - *(u16u *) dstu = *(const u16u *) srcu; - srcu = (uword) ((const u16u *) srcu + 1); - dstu = (uword) ((u16u *) dstu + 1); - } - if (n & 0x04) - { - *(u32u *) dstu = *(const u32u *) srcu; - srcu = (uword) ((const u32u *) srcu + 1); - dstu = (uword) ((u32u *) dstu + 1); - } - if (n & 0x08) - { - *(u64u *) dstu = *(const u64u *) srcu; - } - return ret; - } - - /** - * Fast way when copy size doesn't exceed 512 bytes - */ - if (n <= 32) - { - clib_mov16 ((u8 *) dst, (const u8 *) src); - clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); - return ret; - } - if (n <= 48) - { - clib_mov16 ((u8 *) dst, (const u8 *) src); - clib_mov16 ((u8 *) dst + 16, (const u8 *) src + 16); - clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); - return ret; - } - if (n <= 64) - { - clib_mov32 ((u8 *) dst, (const u8 *) src); - clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); - return ret; - } - if (n <= 256) - { - if (n >= 128) - { - n -= 128; - clib_mov128 ((u8 *) dst, (const u8 *) src); - src = (const u8 *) src + 128; - dst = (u8 *) dst + 128; - } - COPY_BLOCK_128_BACK31: - if (n >= 64) - { - n -= 64; - clib_mov64 ((u8 *) dst, (const u8 *) src); - src = (const u8 *) src + 64; - dst = (u8 *) dst + 64; - } - if (n > 32) - { - clib_mov32 ((u8 *) dst, (const u8 *) src); - clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); - return ret; - } - if (n > 0) - { - clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); - } - return ret; - } - - /** - * Make store aligned when copy size exceeds 256 bytes - */ - dstofss = (uword) dst & 0x1F; - if (dstofss > 0) - { - dstofss = 32 - dstofss; - n -= dstofss; - clib_mov32 ((u8 *) dst, (const u8 *) src); - src = (const u8 *) src + dstofss; - dst = (u8 *) dst + dstofss; - } - - /** - * Copy 128-byte blocks. - */ - clib_mov128blocks ((u8 *) dst, (const u8 *) src, n); - bits = n; - n = n & 127; - bits -= n; - src = (const u8 *) src + bits; - dst = (u8 *) dst + bits; - - /** - * Copy whatever left - */ - goto COPY_BLOCK_128_BACK31; -} - -/* *INDENT-OFF* */ -WARN_ON (stringop-overflow) -/* *INDENT-ON* */ - -#endif /* included_clib_memcpy_avx2_h */ - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |