vppinfra: new memcpy for x86_64

Change-Id: I5a5055580479960ac53e3f989aa188faf57fb05d
Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 0 insertions, 368 deletions

diff --git a/src/vppinfra/memcpy_sse3.h b/src/vppinfra/memcpy_sse3.h
deleted file mode 100644
index 2ad3648a52a..00000000000
--- a/src/vppinfra/memcpy_sse3.h
+++ /dev/null
@@ -1,368 +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_sse3_h
-#define included_clib_memcpy_sse3_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)
-{
-  clib_mov16 ((u8 *) dst + 0 * 16, (const u8 *) src + 0 * 16);
-  clib_mov16 ((u8 *) dst + 1 * 16, (const u8 *) src + 1 * 16);
-}
-
-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_mov256 (u8 * dst, const u8 * src)
-{
-  clib_mov128 ((u8 *) dst + 0 * 128, (const u8 *) src + 0 * 128);
-  clib_mov128 ((u8 *) dst + 1 * 128, (const u8 *) src + 1 * 128);
-}
-
-/**
- * Macro for copying unaligned block from one location to another with constant load offset,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be immediate value within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> must be pre-defined
- */
-#define CLIB_MVUNALIGN_LEFT47_IMM(dst, src, len, offset)                                                    \
-({                                                                                                          \
-    int tmp;                                                                                                \
-    while (len >= 128 + 16 - offset) {                                                                      \
-        xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16));                       \
-        len -= 128;                                                                                         \
-        xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16));                       \
-        xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16));                       \
-        xmm3 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 3 * 16));                       \
-        xmm4 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 4 * 16));                       \
-        xmm5 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 5 * 16));                       \
-        xmm6 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 6 * 16));                       \
-        xmm7 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 7 * 16));                       \
-        xmm8 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 8 * 16));                       \
-        src = (const u8 *)src + 128;                                                                        \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset));             \
-        _mm_storeu_si128((__m128i *)((u8 *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset));             \
-        dst = (u8 *)dst + 128;                                                                              \
-    }                                                                                                       \
-    tmp = len;                                                                                              \
-    len = ((len - 16 + offset) & 127) + 16 - offset;                                                        \
-    tmp -= len;                                                                                             \
-    src = (const u8 *)src + tmp;                                                                            \
-    dst = (u8 *)dst + tmp;                                                                                  \
-    if (len >= 32 + 16 - offset) {                                                                          \
-        while (len >= 32 + 16 - offset) {                                                                   \
-            xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16));                   \
-            len -= 32;                                                                                      \
-            xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16));                   \
-            xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16));                   \
-            src = (const u8 *)src + 32;                                                                     \
-            _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));         \
-            _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));         \
-            dst = (u8 *)dst + 32;                                                                           \
-        }                                                                                                   \
-        tmp = len;                                                                                          \
-        len = ((len - 16 + offset) & 31) + 16 - offset;                                                     \
-        tmp -= len;                                                                                         \
-        src = (const u8 *)src + tmp;                                                                        \
-        dst = (u8 *)dst + tmp;                                                                              \
-    }                                                                                                       \
-})
-
-/**
- * Macro for copying unaligned block from one location to another,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Use switch here because the aligning instruction requires immediate value for shift count.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> used in CLIB_MVUNALIGN_LEFT47_IMM must be pre-defined
- */
-#define CLIB_MVUNALIGN_LEFT47(dst, src, len, offset)                  \
-({                                                                    \
-    switch (offset) {                                                 \
-    case 0x01: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x01); break;   \
-    case 0x02: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x02); break;   \
-    case 0x03: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x03); break;   \
-    case 0x04: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x04); break;   \
-    case 0x05: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x05); break;   \
-    case 0x06: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x06); break;   \
-    case 0x07: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x07); break;   \
-    case 0x08: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x08); break;   \
-    case 0x09: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x09); break;   \
-    case 0x0A: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0A); break;   \
-    case 0x0B: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0B); break;   \
-    case 0x0C: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0C); break;   \
-    case 0x0D: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0D); break;   \
-    case 0x0E: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0E); break;   \
-    case 0x0F: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0F); break;   \
-    default:;                                                         \
-    }                                                                 \
-})
-
-static inline void *
-clib_memcpy_fast_sse3 (void *dst, const void *src, size_t n)
-{
-  __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
-  uword dstu = (uword) dst;
-  uword srcu = (uword) src;
-  void *ret = dst;
-  size_t dstofss;
-  size_t srcofs;
-
-	/**
-	 * 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_mov32 ((u8 *) dst, (const u8 *) src);
-      clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
-      return ret;
-    }
-  if (n <= 64)
-    {
-      clib_mov32 ((u8 *) dst, (const u8 *) src);
-      clib_mov16 ((u8 *) dst + 32, (const u8 *) src + 32);
-      clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
-      return ret;
-    }
-  if (n <= 128)
-    {
-      goto COPY_BLOCK_128_BACK15;
-    }
-  if (n <= 512)
-    {
-      if (n >= 256)
-	{
-	  n -= 256;
-	  clib_mov128 ((u8 *) dst, (const u8 *) src);
-	  clib_mov128 ((u8 *) dst + 128, (const u8 *) src + 128);
-	  src = (const u8 *) src + 256;
-	  dst = (u8 *) dst + 256;
-	}
-    COPY_BLOCK_255_BACK15:
-      if (n >= 128)
-	{
-	  n -= 128;
-	  clib_mov128 ((u8 *) dst, (const u8 *) src);
-	  src = (const u8 *) src + 128;
-	  dst = (u8 *) dst + 128;
-	}
-    COPY_BLOCK_128_BACK15:
-      if (n >= 64)
-	{
-	  n -= 64;
-	  clib_mov64 ((u8 *) dst, (const u8 *) src);
-	  src = (const u8 *) src + 64;
-	  dst = (u8 *) dst + 64;
-	}
-    COPY_BLOCK_64_BACK15:
-      if (n >= 32)
-	{
-	  n -= 32;
-	  clib_mov32 ((u8 *) dst, (const u8 *) src);
-	  src = (const u8 *) src + 32;
-	  dst = (u8 *) dst + 32;
-	}
-      if (n > 16)
-	{
-	  clib_mov16 ((u8 *) dst, (const u8 *) src);
-	  clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
-	  return ret;
-	}
-      if (n > 0)
-	{
-	  clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
-	}
-      return ret;
-    }
-
-  /**
-   * Make store aligned when copy size exceeds 512 bytes,
-   * and make sure the first 15 bytes are copied, because
-   * unaligned copy functions require up to 15 bytes
-   * backwards access.
-   */
-  dstofss = (uword) dst & 0x0F;
-  if (dstofss > 0)
-    {
-      dstofss = 16 - dstofss + 16;
-      n -= dstofss;
-      clib_mov32 ((u8 *) dst, (const u8 *) src);
-      src = (const u8 *) src + dstofss;
-      dst = (u8 *) dst + dstofss;
-    }
-  srcofs = ((uword) src & 0x0F);
-
-  /**
-   * For aligned copy
-   */
-  if (srcofs == 0)
-    {
-      /**
-       * Copy 256-byte blocks
-       */
-      for (; n >= 256; n -= 256)
-	{
-	  clib_mov256 ((u8 *) dst, (const u8 *) src);
-	  dst = (u8 *) dst + 256;
-	  src = (const u8 *) src + 256;
-	}
-
-      /**
-       * Copy whatever left
-       */
-      goto COPY_BLOCK_255_BACK15;
-    }
-
-  /**
-   * For copy with unaligned load
-   */
-  CLIB_MVUNALIGN_LEFT47 (dst, src, n, srcofs);
-
-  /**
-   * Copy whatever left
-   */
-  goto COPY_BLOCK_64_BACK15;
-}
-
-/* *INDENT-OFF* */
-WARN_ON (stringop-overflow)
-/* *INDENT-ON* */
-
-#undef CLIB_MVUNALIGN_LEFT47_IMM
-#undef CLIB_MVUNALIGN_LEFT47
-
-#endif /* included_clib_memcpy_sse3_h */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */