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deps/zlib/patches/0001-simd.patch
1 214 строк
39 KB
Node.js GitHub Bot
deps: update zlib to 1.3.0.1-motley-24342f6
19 мар 2024, 13:14
Не верифицирован
19 мар 2024, 13:14
70a0510
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diff --git a/crc32.c b/crc32.c index 9580440c0e6b..9162429cc7b4 100644 --- a/crc32.c +++ b/crc32.c @@ -28,6 +28,8 @@ # endif /* !DYNAMIC_CRC_TABLE */ #endif /* MAKECRCH */ +#include "deflate.h" +#include "x86.h" #include "zutil.h" /* for STDC and FAR definitions */ /* Definitions for doing the crc four data bytes at a time. */ @@ -440,3 +442,28 @@ uLong ZEXPORT crc32_combine64(crc1, crc2, len2) { return crc32_combine_(crc1, crc2, len2); } + +ZLIB_INTERNAL void crc_reset(deflate_state *const s) +{ + if (x86_cpu_enable_simd) { + crc_fold_init(s); + return; + } + s->strm->adler = crc32(0L, Z_NULL, 0); +} + +ZLIB_INTERNAL void crc_finalize(deflate_state *const s) +{ + if (x86_cpu_enable_simd) + s->strm->adler = crc_fold_512to32(s); +} + +ZLIB_INTERNAL void copy_with_crc(z_streamp strm, Bytef *dst, long size) +{ + if (x86_cpu_enable_simd) { + crc_fold_copy(strm->state, dst, strm->next_in, size); + return; + } + zmemcpy(dst, strm->next_in, size); + strm->adler = crc32(strm->adler, dst, size); +} diff --git a/crc_folding.c b/crc_folding.c new file mode 100644 index 000000000000..48d77744aaf4 --- /dev/null +++ b/crc_folding.c @@ -0,0 +1,493 @@ +/* + * Compute the CRC32 using a parallelized folding approach with the PCLMULQDQ + * instruction. + * + * A white paper describing this algorithm can be found at: + * http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf + * + * Copyright (C) 2013 Intel Corporation. All rights reserved. + * Authors: + * Wajdi Feghali <wajdi.k.feghali@intel.com> + * Jim Guilford <james.guilford@intel.com> + * Vinodh Gopal <vinodh.gopal@intel.com> + * Erdinc Ozturk <erdinc.ozturk@intel.com> + * Jim Kukunas <james.t.kukunas@linux.intel.com> + * + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "deflate.h" + +#include <inttypes.h> +#include <emmintrin.h> +#include <immintrin.h> +#include <wmmintrin.h> + +#define CRC_LOAD(s) \ + do { \ + __m128i xmm_crc0 = _mm_loadu_si128((__m128i *)s->crc0 + 0);\ + __m128i xmm_crc1 = _mm_loadu_si128((__m128i *)s->crc0 + 1);\ + __m128i xmm_crc2 = _mm_loadu_si128((__m128i *)s->crc0 + 2);\ + __m128i xmm_crc3 = _mm_loadu_si128((__m128i *)s->crc0 + 3);\ + __m128i xmm_crc_part = _mm_loadu_si128((__m128i *)s->crc0 + 4); + +#define CRC_SAVE(s) \ + _mm_storeu_si128((__m128i *)s->crc0 + 0, xmm_crc0);\ + _mm_storeu_si128((__m128i *)s->crc0 + 1, xmm_crc1);\ + _mm_storeu_si128((__m128i *)s->crc0 + 2, xmm_crc2);\ + _mm_storeu_si128((__m128i *)s->crc0 + 3, xmm_crc3);\ + _mm_storeu_si128((__m128i *)s->crc0 + 4, xmm_crc_part);\ + } while (0); + +ZLIB_INTERNAL void crc_fold_init(deflate_state *const s) +{ + CRC_LOAD(s) + + xmm_crc0 = _mm_cvtsi32_si128(0x9db42487); + xmm_crc1 = _mm_setzero_si128(); + xmm_crc2 = _mm_setzero_si128(); + xmm_crc3 = _mm_setzero_si128(); + + CRC_SAVE(s) + + s->strm->adler = 0; +} + +local void fold_1(deflate_state *const s, + __m128i *xmm_crc0, __m128i *xmm_crc1, + __m128i *xmm_crc2, __m128i *xmm_crc3) +{ + const __m128i xmm_fold4 = _mm_set_epi32( + 0x00000001, 0x54442bd4, + 0x00000001, 0xc6e41596); + + __m128i x_tmp3; + __m128 ps_crc0, ps_crc3, ps_res; + + x_tmp3 = *xmm_crc3; + + *xmm_crc3 = *xmm_crc0; + *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01); + *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10); + ps_crc0 = _mm_castsi128_ps(*xmm_crc0); + ps_crc3 = _mm_castsi128_ps(*xmm_crc3); + ps_res = _mm_xor_ps(ps_crc0, ps_crc3); + + *xmm_crc0 = *xmm_crc1; + *xmm_crc1 = *xmm_crc2; + *xmm_crc2 = x_tmp3; + *xmm_crc3 = _mm_castps_si128(ps_res); +} + +local void fold_2(deflate_state *const s, + __m128i *xmm_crc0, __m128i *xmm_crc1, + __m128i *xmm_crc2, __m128i *xmm_crc3) +{ + const __m128i xmm_fold4 = _mm_set_epi32( + 0x00000001, 0x54442bd4, + 0x00000001, 0xc6e41596); + + __m128i x_tmp3, x_tmp2; + __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3, ps_res31, ps_res20; + + x_tmp3 = *xmm_crc3; + x_tmp2 = *xmm_crc2; + + *xmm_crc3 = *xmm_crc1; + *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01); + *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10); + ps_crc3 = _mm_castsi128_ps(*xmm_crc3); + ps_crc1 = _mm_castsi128_ps(*xmm_crc1); + ps_res31= _mm_xor_ps(ps_crc3, ps_crc1); + + *xmm_crc2 = *xmm_crc0; + *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01); + *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x10); + ps_crc0 = _mm_castsi128_ps(*xmm_crc0); + ps_crc2 = _mm_castsi128_ps(*xmm_crc2); + ps_res20= _mm_xor_ps(ps_crc0, ps_crc2); + + *xmm_crc0 = x_tmp2; + *xmm_crc1 = x_tmp3; + *xmm_crc2 = _mm_castps_si128(ps_res20); + *xmm_crc3 = _mm_castps_si128(ps_res31); +} + +local void fold_3(deflate_state *const s, + __m128i *xmm_crc0, __m128i *xmm_crc1, + __m128i *xmm_crc2, __m128i *xmm_crc3) +{ + const __m128i xmm_fold4 = _mm_set_epi32( + 0x00000001, 0x54442bd4, + 0x00000001, 0xc6e41596); + + __m128i x_tmp3; + __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3, ps_res32, ps_res21, ps_res10; + + x_tmp3 = *xmm_crc3; + + *xmm_crc3 = *xmm_crc2; + *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x01); + *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10); + ps_crc2 = _mm_castsi128_ps(*xmm_crc2); + ps_crc3 = _mm_castsi128_ps(*xmm_crc3); + ps_res32 = _mm_xor_ps(ps_crc2, ps_crc3); + + *xmm_crc2 = *xmm_crc1; + *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01); + *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x10); + ps_crc1 = _mm_castsi128_ps(*xmm_crc1); + ps_crc2 = _mm_castsi128_ps(*xmm_crc2); + ps_res21= _mm_xor_ps(ps_crc1, ps_crc2); + + *xmm_crc1 = *xmm_crc0; + *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01); + *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x10); + ps_crc0 = _mm_castsi128_ps(*xmm_crc0); + ps_crc1 = _mm_castsi128_ps(*xmm_crc1); + ps_res10= _mm_xor_ps(ps_crc0, ps_crc1); + + *xmm_crc0 = x_tmp3; + *xmm_crc1 = _mm_castps_si128(ps_res10); + *xmm_crc2 = _mm_castps_si128(ps_res21); + *xmm_crc3 = _mm_castps_si128(ps_res32); +} + +local void fold_4(deflate_state *const s, + __m128i *xmm_crc0, __m128i *xmm_crc1, + __m128i *xmm_crc2, __m128i *xmm_crc3) +{ + const __m128i xmm_fold4 = _mm_set_epi32( + 0x00000001, 0x54442bd4, + 0x00000001, 0xc6e41596); + + __m128i x_tmp0, x_tmp1, x_tmp2, x_tmp3; + __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3; + __m128 ps_t0, ps_t1, ps_t2, ps_t3; + __m128 ps_res0, ps_res1, ps_res2, ps_res3; + + x_tmp0 = *xmm_crc0; + x_tmp1 = *xmm_crc1; + x_tmp2 = *xmm_crc2; + x_tmp3 = *xmm_crc3; + + *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01); + x_tmp0 = _mm_clmulepi64_si128(x_tmp0, xmm_fold4, 0x10); + ps_crc0 = _mm_castsi128_ps(*xmm_crc0); + ps_t0 = _mm_castsi128_ps(x_tmp0); + ps_res0 = _mm_xor_ps(ps_crc0, ps_t0); + + *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01); + x_tmp1 = _mm_clmulepi64_si128(x_tmp1, xmm_fold4, 0x10); + ps_crc1 = _mm_castsi128_ps(*xmm_crc1); + ps_t1 = _mm_castsi128_ps(x_tmp1); + ps_res1 = _mm_xor_ps(ps_crc1, ps_t1); + + *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x01); + x_tmp2 = _mm_clmulepi64_si128(x_tmp2, xmm_fold4, 0x10); + ps_crc2 = _mm_castsi128_ps(*xmm_crc2); + ps_t2 = _mm_castsi128_ps(x_tmp2); + ps_res2 = _mm_xor_ps(ps_crc2, ps_t2); + + *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x01); + x_tmp3 = _mm_clmulepi64_si128(x_tmp3, xmm_fold4, 0x10); + ps_crc3 = _mm_castsi128_ps(*xmm_crc3); + ps_t3 = _mm_castsi128_ps(x_tmp3); + ps_res3 = _mm_xor_ps(ps_crc3, ps_t3); + + *xmm_crc0 = _mm_castps_si128(ps_res0); + *xmm_crc1 = _mm_castps_si128(ps_res1); + *xmm_crc2 = _mm_castps_si128(ps_res2); + *xmm_crc3 = _mm_castps_si128(ps_res3); +} + +local const unsigned zalign(32) pshufb_shf_table[60] = { + 0x84838281,0x88878685,0x8c8b8a89,0x008f8e8d, /* shl 15 (16 - 1)/shr1 */ + 0x85848382,0x89888786,0x8d8c8b8a,0x01008f8e, /* shl 14 (16 - 3)/shr2 */ + 0x86858483,0x8a898887,0x8e8d8c8b,0x0201008f, /* shl 13 (16 - 4)/shr3 */ + 0x87868584,0x8b8a8988,0x8f8e8d8c,0x03020100, /* shl 12 (16 - 4)/shr4 */ + 0x88878685,0x8c8b8a89,0x008f8e8d,0x04030201, /* shl 11 (16 - 5)/shr5 */ + 0x89888786,0x8d8c8b8a,0x01008f8e,0x05040302, /* shl 10 (16 - 6)/shr6 */ + 0x8a898887,0x8e8d8c8b,0x0201008f,0x06050403, /* shl 9 (16 - 7)/shr7 */ + 0x8b8a8988,0x8f8e8d8c,0x03020100,0x07060504, /* shl 8 (16 - 8)/shr8 */ + 0x8c8b8a89,0x008f8e8d,0x04030201,0x08070605, /* shl 7 (16 - 9)/shr9 */ + 0x8d8c8b8a,0x01008f8e,0x05040302,0x09080706, /* shl 6 (16 -10)/shr10*/ + 0x8e8d8c8b,0x0201008f,0x06050403,0x0a090807, /* shl 5 (16 -11)/shr11*/ + 0x8f8e8d8c,0x03020100,0x07060504,0x0b0a0908, /* shl 4 (16 -12)/shr12*/ + 0x008f8e8d,0x04030201,0x08070605,0x0c0b0a09, /* shl 3 (16 -13)/shr13*/ + 0x01008f8e,0x05040302,0x09080706,0x0d0c0b0a, /* shl 2 (16 -14)/shr14*/ + 0x0201008f,0x06050403,0x0a090807,0x0e0d0c0b /* shl 1 (16 -15)/shr15*/ +}; + +local void partial_fold(deflate_state *const s, const size_t len, + __m128i *xmm_crc0, __m128i *xmm_crc1, + __m128i *xmm_crc2, __m128i *xmm_crc3, + __m128i *xmm_crc_part) +{ + + const __m128i xmm_fold4 = _mm_set_epi32( + 0x00000001, 0x54442bd4, + 0x00000001, 0xc6e41596); + const __m128i xmm_mask3 = _mm_set1_epi32(0x80808080); + + __m128i xmm_shl, xmm_shr, xmm_tmp1, xmm_tmp2, xmm_tmp3; + __m128i xmm_a0_0, xmm_a0_1; + __m128 ps_crc3, psa0_0, psa0_1, ps_res; + + xmm_shl = _mm_load_si128((__m128i *)pshufb_shf_table + (len - 1)); + xmm_shr = xmm_shl; + xmm_shr = _mm_xor_si128(xmm_shr, xmm_mask3); + + xmm_a0_0 = _mm_shuffle_epi8(*xmm_crc0, xmm_shl); + + *xmm_crc0 = _mm_shuffle_epi8(*xmm_crc0, xmm_shr); + xmm_tmp1 = _mm_shuffle_epi8(*xmm_crc1, xmm_shl); + *xmm_crc0 = _mm_or_si128(*xmm_crc0, xmm_tmp1); + + *xmm_crc1 = _mm_shuffle_epi8(*xmm_crc1, xmm_shr); + xmm_tmp2 = _mm_shuffle_epi8(*xmm_crc2, xmm_shl); + *xmm_crc1 = _mm_or_si128(*xmm_crc1, xmm_tmp2); + + *xmm_crc2 = _mm_shuffle_epi8(*xmm_crc2, xmm_shr); + xmm_tmp3 = _mm_shuffle_epi8(*xmm_crc3, xmm_shl); + *xmm_crc2 = _mm_or_si128(*xmm_crc2, xmm_tmp3); + + *xmm_crc3 = _mm_shuffle_epi8(*xmm_crc3, xmm_shr); + *xmm_crc_part = _mm_shuffle_epi8(*xmm_crc_part, xmm_shl); + *xmm_crc3 = _mm_or_si128(*xmm_crc3, *xmm_crc_part); + + xmm_a0_1 = _mm_clmulepi64_si128(xmm_a0_0, xmm_fold4, 0x10); + xmm_a0_0 = _mm_clmulepi64_si128(xmm_a0_0, xmm_fold4, 0x01); + + ps_crc3 = _mm_castsi128_ps(*xmm_crc3); + psa0_0 = _mm_castsi128_ps(xmm_a0_0); + psa0_1 = _mm_castsi128_ps(xmm_a0_1); + + ps_res = _mm_xor_ps(ps_crc3, psa0_0); + ps_res = _mm_xor_ps(ps_res, psa0_1); + + *xmm_crc3 = _mm_castps_si128(ps_res); +} + +ZLIB_INTERNAL void crc_fold_copy(deflate_state *const s, + unsigned char *dst, const unsigned char *src, long len) +{ + unsigned long algn_diff; + __m128i xmm_t0, xmm_t1, xmm_t2, xmm_t3; + + CRC_LOAD(s) + + if (len < 16) { + if (len == 0) + return; + goto partial; + } + + algn_diff = 0 - (uintptr_t)src & 0xF; + if (algn_diff) { + xmm_crc_part = _mm_loadu_si128((__m128i *)src); + _mm_storeu_si128((__m128i *)dst, xmm_crc_part); + + dst += algn_diff; + src += algn_diff; + len -= algn_diff; + + partial_fold(s, algn_diff, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3, + &xmm_crc_part); + } + + while ((len -= 64) >= 0) { + xmm_t0 = _mm_load_si128((__m128i *)src); + xmm_t1 = _mm_load_si128((__m128i *)src + 1); + xmm_t2 = _mm_load_si128((__m128i *)src + 2); + xmm_t3 = _mm_load_si128((__m128i *)src + 3); + + fold_4(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3); + + _mm_storeu_si128((__m128i *)dst, xmm_t0); + _mm_storeu_si128((__m128i *)dst + 1, xmm_t1); + _mm_storeu_si128((__m128i *)dst + 2, xmm_t2); + _mm_storeu_si128((__m128i *)dst + 3, xmm_t3); + + xmm_crc0 = _mm_xor_si128(xmm_crc0, xmm_t0); + xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_t1); + xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t2); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t3); + + src += 64; + dst += 64; + } + + /* + * len = num bytes left - 64 + */ + if (len + 16 >= 0) { + len += 16; + + xmm_t0 = _mm_load_si128((__m128i *)src); + xmm_t1 = _mm_load_si128((__m128i *)src + 1); + xmm_t2 = _mm_load_si128((__m128i *)src + 2); + + fold_3(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3); + + _mm_storeu_si128((__m128i *)dst, xmm_t0); + _mm_storeu_si128((__m128i *)dst + 1, xmm_t1); + _mm_storeu_si128((__m128i *)dst + 2, xmm_t2); + + xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_t0); + xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t1); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t2); + + if (len == 0) + goto done; + + dst += 48; + src += 48; + } else if (len + 32 >= 0) { + len += 32; + + xmm_t0 = _mm_load_si128((__m128i *)src); + xmm_t1 = _mm_load_si128((__m128i *)src + 1); + + fold_2(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3); + + _mm_storeu_si128((__m128i *)dst, xmm_t0); + _mm_storeu_si128((__m128i *)dst + 1, xmm_t1); + + xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t0); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t1); + + if (len == 0) + goto done; + + dst += 32; + src += 32; + } else if (len + 48 >= 0) { + len += 48; + + xmm_t0 = _mm_load_si128((__m128i *)src); + + fold_1(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3); + + _mm_storeu_si128((__m128i *)dst, xmm_t0); + + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t0); + + if (len == 0) + goto done; + + dst += 16; + src += 16; + } else { + len += 64; + if (len == 0) + goto done; + } + +partial: + +#if defined(_MSC_VER) + /* VS does not permit the use of _mm_set_epi64x in 32-bit builds */ + { + int32_t parts[4] = {0, 0, 0, 0}; + memcpy(&parts, src, len); + xmm_crc_part = _mm_set_epi32(parts[3], parts[2], parts[1], parts[0]); + } +#else + { + int64_t parts[2] = {0, 0}; + memcpy(&parts, src, len); + xmm_crc_part = _mm_set_epi64x(parts[1], parts[0]); + } +#endif + + zmemcpy(dst, src, len); /* TODO: Possibly generate more efficient code. */ + partial_fold(s, len, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3, + &xmm_crc_part); +done: + CRC_SAVE(s) +} + +local const unsigned zalign(16) crc_k[] = { + 0xccaa009e, 0x00000000, /* rk1 */ + 0x751997d0, 0x00000001, /* rk2 */ + 0xccaa009e, 0x00000000, /* rk5 */ + 0x63cd6124, 0x00000001, /* rk6 */ + 0xf7011640, 0x00000001, /* rk7 */ + 0xdb710640, 0x00000001 /* rk8 */ +}; + +local const unsigned zalign(16) crc_mask[4] = { + 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000 +}; + +local const unsigned zalign(16) crc_mask2[4] = { + 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF +}; + +unsigned ZLIB_INTERNAL crc_fold_512to32(deflate_state *const s) +{ + const __m128i xmm_mask = _mm_load_si128((__m128i *)crc_mask); + const __m128i xmm_mask2 = _mm_load_si128((__m128i *)crc_mask2); + + unsigned crc; + __m128i x_tmp0, x_tmp1, x_tmp2, crc_fold; + + CRC_LOAD(s) + + /* + * k1 + */ + crc_fold = _mm_load_si128((__m128i *)crc_k); + + x_tmp0 = _mm_clmulepi64_si128(xmm_crc0, crc_fold, 0x10); + xmm_crc0 = _mm_clmulepi64_si128(xmm_crc0, crc_fold, 0x01); + xmm_crc1 = _mm_xor_si128(xmm_crc1, x_tmp0); + xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_crc0); + + x_tmp1 = _mm_clmulepi64_si128(xmm_crc1, crc_fold, 0x10); + xmm_crc1 = _mm_clmulepi64_si128(xmm_crc1, crc_fold, 0x01); + xmm_crc2 = _mm_xor_si128(xmm_crc2, x_tmp1); + xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_crc1); + + x_tmp2 = _mm_clmulepi64_si128(xmm_crc2, crc_fold, 0x10); + xmm_crc2 = _mm_clmulepi64_si128(xmm_crc2, crc_fold, 0x01); + xmm_crc3 = _mm_xor_si128(xmm_crc3, x_tmp2); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2); + + /* + * k5 + */ + crc_fold = _mm_load_si128((__m128i *)crc_k + 1); + + xmm_crc0 = xmm_crc3; + xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0); + xmm_crc0 = _mm_srli_si128(xmm_crc0, 8); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc0); + + xmm_crc0 = xmm_crc3; + xmm_crc3 = _mm_slli_si128(xmm_crc3, 4); + xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0x10); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc0); + xmm_crc3 = _mm_and_si128(xmm_crc3, xmm_mask2); + + /* + * k7 + */ + xmm_crc1 = xmm_crc3; + xmm_crc2 = xmm_crc3; + crc_fold = _mm_load_si128((__m128i *)crc_k + 2); + + xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2); + xmm_crc3 = _mm_and_si128(xmm_crc3, xmm_mask); + + xmm_crc2 = xmm_crc3; + xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0x10); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2); + xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc1); + + crc = _mm_extract_epi32(xmm_crc3, 2); + return ~crc; + CRC_SAVE(s) +} diff --git a/deflate.c b/deflate.c index 1ec761448de9..aa0c9c67a6dc 100644 --- a/deflate.c +++ b/deflate.c @@ -48,8 +48,9 @@ */ /* @(#) $Id$ */ - +#include <assert.h> #include "deflate.h" +#include "x86.h" const char deflate_copyright[] = " deflate 1.2.11 Copyright 1995-2017 Jean-loup Gailly and Mark Adler "; @@ -86,7 +87,7 @@ local block_state deflate_huff OF((deflate_state *s, int flush)); local void lm_init OF((deflate_state *s)); local void putShortMSB OF((deflate_state *s, uInt b)); local void flush_pending OF((z_streamp strm)); -local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); +unsigned ZLIB_INTERNAL deflate_read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); #ifdef ASMV # pragma message("Assembler code may have bugs -- use at your own risk") void match_init OF((void)); /* asm code initialization */ @@ -100,6 +101,20 @@ local void check_match OF((deflate_state *s, IPos start, IPos match, int length)); #endif +/* From crc32.c */ +extern void ZLIB_INTERNAL crc_reset(deflate_state *const s); +extern void ZLIB_INTERNAL crc_finalize(deflate_state *const s); +extern void ZLIB_INTERNAL copy_with_crc(z_streamp strm, Bytef *dst, long size); + +#ifdef _MSC_VER +#define INLINE __inline +#else +#define INLINE inline +#endif + +/* Inline optimisation */ +local INLINE Pos insert_string_sse(deflate_state *const s, const Pos str); + /* =========================================================================== * Local data */ @@ -162,7 +177,6 @@ local const config configuration_table[10] = { */ #define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask) - /* =========================================================================== * Insert string str in the dictionary and set match_head to the previous head * of the hash chain (the most recent string with same hash key). Return @@ -173,17 +187,28 @@ local const config configuration_table[10] = { * characters and the first MIN_MATCH bytes of str are valid (except for * the last MIN_MATCH-1 bytes of the input file). */ +local INLINE Pos insert_string_c(deflate_state *const s, const Pos str) +{ + Pos ret; + + UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]); #ifdef FASTEST -#define INSERT_STRING(s, str, match_head) \ - (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ - match_head = s->head[s->ins_h], \ - s->head[s->ins_h] = (Pos)(str)) + ret = s->head[s->ins_h]; #else -#define INSERT_STRING(s, str, match_head) \ - (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ - match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \ - s->head[s->ins_h] = (Pos)(str)) + ret = s->prev[str & s->w_mask] = s->head[s->ins_h]; #endif + s->head[s->ins_h] = str; + + return ret; +} + +local INLINE Pos insert_string(deflate_state *const s, const Pos str) +{ + if (x86_cpu_enable_simd) + return insert_string_sse(s, str); + return insert_string_c(s, str); +} + /* =========================================================================== * Initialize the hash table (avoiding 64K overflow for 16 bit systems). @@ -248,6 +273,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, const char *version; int stream_size; { + unsigned window_padding = 8; deflate_state *s; int wrap = 1; static const char my_version[] = ZLIB_VERSION; @@ -257,6 +283,8 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, * output size for (length,distance) codes is <= 24 bits. */ + x86_check_features(); + if (version == Z_NULL || version[0] != my_version[0] || stream_size != sizeof(z_stream)) { return Z_VERSION_ERROR; @@ -313,12 +341,19 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, s->w_size = 1 << s->w_bits; s->w_mask = s->w_size - 1; - s->hash_bits = (uInt)memLevel + 7; + if (x86_cpu_enable_simd) { + s->hash_bits = 15; + } else { + s->hash_bits = memLevel + 7; + } + s->hash_size = 1 << s->hash_bits; s->hash_mask = s->hash_size - 1; s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH); - s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte)); + s->window = (Bytef *) ZALLOC(strm, + s->w_size + window_padding, + 2*sizeof(Byte)); s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos)); s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos)); @@ -418,11 +453,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength) str = s->strstart; n = s->lookahead - (MIN_MATCH-1); do { - UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); -#ifndef FASTEST - s->prev[str & s->w_mask] = s->head[s->ins_h]; -#endif - s->head[s->ins_h] = (Pos)str; + insert_string(s, str); str++; } while (--n); s->strstart = str; @@ -848,7 +879,7 @@ int ZEXPORT deflate (strm, flush) #ifdef GZIP if (s->status == GZIP_STATE) { /* gzip header */ - strm->adler = crc32(0L, Z_NULL, 0); + crc_reset(s); put_byte(s, 31); put_byte(s, 139); put_byte(s, 8); @@ -1049,6 +1080,7 @@ int ZEXPORT deflate (strm, flush) /* Write the trailer */ #ifdef GZIP if (s->wrap == 2) { + crc_finalize(s); put_byte(s, (Byte)(strm->adler & 0xff)); put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); put_byte(s, (Byte)((strm->adler >> 16) & 0xff)); @@ -1161,7 +1193,7 @@ int ZEXPORT deflateCopy (dest, source) * allocating a large strm->next_in buffer and copying from it. * (See also flush_pending()). */ -local unsigned read_buf(strm, buf, size) +ZLIB_INTERNAL unsigned deflate_read_buf(strm, buf, size) z_streamp strm; Bytef *buf; unsigned size; @@ -1173,15 +1205,16 @@ local unsigned read_buf(strm, buf, size) strm->avail_in -= len; - zmemcpy(buf, strm->next_in, len); - if (strm->state->wrap == 1) { - strm->adler = adler32(strm->adler, buf, len); - } #ifdef GZIP - else if (strm->state->wrap == 2) { - strm->adler = crc32(strm->adler, buf, len); - } + if (strm->state->wrap == 2) + copy_with_crc(strm, buf, len); + else #endif + { + zmemcpy(buf, strm->next_in, len); + if (strm->state->wrap == 1) + strm->adler = adler32(strm->adler, buf, len); + } strm->next_in += len; strm->total_in += len; @@ -1479,7 +1512,19 @@ local void check_match(s, start, match, length) * performed for at least two bytes (required for the zip translate_eol * option -- not supported here). */ -local void fill_window(s) +local void fill_window_c(deflate_state *s); + +local void fill_window(deflate_state *s) +{ + if (x86_cpu_enable_simd) { + fill_window_sse(s); + return; + } + + fill_window_c(s); +} + +local void fill_window_c(s) deflate_state *s; { unsigned n; @@ -1847,7 +1892,7 @@ local block_state deflate_fast(s, flush) */ hash_head = NIL; if (s->lookahead >= MIN_MATCH) { - INSERT_STRING(s, s->strstart, hash_head); + hash_head = insert_string(s, s->strstart); } /* Find the longest match, discarding those <= prev_length. @@ -1878,7 +1923,7 @@ local block_state deflate_fast(s, flush) s->match_length--; /* string at strstart already in table */ do { s->strstart++; - INSERT_STRING(s, s->strstart, hash_head); + hash_head = insert_string(s, s->strstart); /* strstart never exceeds WSIZE-MAX_MATCH, so there are * always MIN_MATCH bytes ahead. */ @@ -1950,7 +1995,7 @@ local block_state deflate_slow(s, flush) */ hash_head = NIL; if (s->lookahead >= MIN_MATCH) { - INSERT_STRING(s, s->strstart, hash_head); + hash_head = insert_string(s, s->strstart); } /* Find the longest match, discarding those <= prev_length. @@ -2001,7 +2046,7 @@ local block_state deflate_slow(s, flush) s->prev_length -= 2; do { if (++s->strstart <= max_insert) { - INSERT_STRING(s, s->strstart, hash_head); + hash_head = insert_string(s, s->strstart); } } while (--s->prev_length != 0); s->match_available = 0; @@ -2161,3 +2206,37 @@ local block_state deflate_huff(s, flush) FLUSH_BLOCK(s, 0); return block_done; } + +/* Safe to inline this as GCC/clang will use inline asm and Visual Studio will + * use intrinsic without extra params + */ +local INLINE Pos insert_string_sse(deflate_state *const s, const Pos str) +{ + Pos ret; + unsigned *ip, val, h = 0; + + ip = (unsigned *)&s->window[str]; + val = *ip; + + if (s->level >= 6) + val &= 0xFFFFFF; + +/* Windows clang should use inline asm */ +#if defined(_MSC_VER) && !defined(__clang__) + h = _mm_crc32_u32(h, val); +#elif defined(__i386__) || defined(__amd64__) + __asm__ __volatile__ ( + "crc32 %1,%0\n\t" + : "+r" (h) + : "r" (val) + ); +#else + /* This should never happen */ + assert(0); +#endif + + ret = s->head[h & s->hash_mask]; + s->head[h & s->hash_mask] = str; + s->prev[str & s->w_mask] = ret; + return ret; +} diff --git a/deflate.h b/deflate.h index 23ecdd312bc0..ab56df7663b6 100644 --- a/deflate.h +++ b/deflate.h @@ -109,7 +109,7 @@ typedef struct internal_state { ulg gzindex; /* where in extra, name, or comment */ Byte method; /* can only be DEFLATED */ int last_flush; /* value of flush param for previous deflate call */ - + unsigned zalign(16) crc0[4 * 5]; /* used by deflate.c: */ uInt w_size; /* LZ77 window size (32K by default) */ @@ -346,4 +346,14 @@ void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf, flush = _tr_tally(s, distance, length) #endif +/* Functions that are SIMD optimised on x86 */ +void ZLIB_INTERNAL crc_fold_init(deflate_state* const s); +void ZLIB_INTERNAL crc_fold_copy(deflate_state* const s, + unsigned char* dst, + const unsigned char* src, + long len); +unsigned ZLIB_INTERNAL crc_fold_512to32(deflate_state* const s); + +void ZLIB_INTERNAL fill_window_sse(deflate_state* s); + #endif /* DEFLATE_H */ diff --git a/fill_window_sse.c b/fill_window_sse.c new file mode 100644 index 000000000000..949ccce1ba9c --- /dev/null +++ b/fill_window_sse.c @@ -0,0 +1,177 @@ +/* + * Fill Window with SSE2-optimized hash shifting + * + * Copyright (C) 2013 Intel Corporation + * Authors: + * Arjan van de Ven <arjan@linux.intel.com> + * Jim Kukunas <james.t.kukunas@linux.intel.com> + * + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include <immintrin.h> +#include "deflate.h" + +#define UPDATE_HASH(s,h,i) \ + {\ + if (s->level < 6) { \ + h = (3483 * (s->window[i]) +\ + 23081* (s->window[i+1]) +\ + 6954 * (s->window[i+2]) +\ + 20947* (s->window[i+3])) & s->hash_mask;\ + } else {\ + h = (25881* (s->window[i]) +\ + 24674* (s->window[i+1]) +\ + 25811* (s->window[i+2])) & s->hash_mask;\ + }\ + }\ + +extern int deflate_read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); + +void fill_window_sse(deflate_state *s) +{ + const __m128i xmm_wsize = _mm_set1_epi16(s->w_size); + + register unsigned n; + register Posf *p; + unsigned more; /* Amount of free space at the end of the window. */ + uInt wsize = s->w_size; + + Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); + + do { + more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart); + + /* Deal with !@#$% 64K limit: */ + if (sizeof(int) <= 2) { + if (more == 0 && s->strstart == 0 && s->lookahead == 0) { + more = wsize; + + } else if (more == (unsigned)(-1)) { + /* Very unlikely, but possible on 16 bit machine if + * strstart == 0 && lookahead == 1 (input done a byte at time) + */ + more--; + } + } + + /* If the window is almost full and there is insufficient lookahead, + * move the upper half to the lower one to make room in the upper half. + */ + if (s->strstart >= wsize+MAX_DIST(s)) { + + zmemcpy(s->window, s->window+wsize, (unsigned)wsize); + s->match_start -= wsize; + s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ + s->block_start -= (long) wsize; + + /* Slide the hash table (could be avoided with 32 bit values + at the expense of memory usage). We slide even when level == 0 + to keep the hash table consistent if we switch back to level > 0 + later. (Using level 0 permanently is not an optimal usage of + zlib, so we don't care about this pathological case.) + */ + n = s->hash_size; + p = &s->head[n]; + p -= 8; + do { + __m128i value, result; + + value = _mm_loadu_si128((__m128i *)p); + result = _mm_subs_epu16(value, xmm_wsize); + _mm_storeu_si128((__m128i *)p, result); + + p -= 8; + n -= 8; + } while (n > 0); + + n = wsize; +#ifndef FASTEST + p = &s->prev[n]; + p -= 8; + do { + __m128i value, result; + + value = _mm_loadu_si128((__m128i *)p); + result = _mm_subs_epu16(value, xmm_wsize); + _mm_storeu_si128((__m128i *)p, result); + + p -= 8; + n -= 8; + } while (n > 0); +#endif + more += wsize; + } + if (s->strm->avail_in == 0) break; + + /* If there was no sliding: + * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && + * more == window_size - lookahead - strstart + * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) + * => more >= window_size - 2*WSIZE + 2 + * In the BIG_MEM or MMAP case (not yet supported), + * window_size == input_size + MIN_LOOKAHEAD && + * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. + * Otherwise, window_size == 2*WSIZE so more >= 2. + * If there was sliding, more >= WSIZE. So in all cases, more >= 2. + */ + Assert(more >= 2, "more < 2"); + + n = deflate_read_buf(s->strm, + s->window + s->strstart + s->lookahead, + more); + s->lookahead += n; + + /* Initialize the hash value now that we have some input: */ + if (s->lookahead >= MIN_MATCH) { + uInt str = s->strstart; + s->ins_h = s->window[str]; + if (str >= 1) + UPDATE_HASH(s, s->ins_h, str + 1 - (MIN_MATCH-1)); +#if MIN_MATCH != 3 + Call UPDATE_HASH() MIN_MATCH-3 more times +#endif + } + /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, + * but this is not important since only literal bytes will be emitted. + */ + + } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); + + /* If the WIN_INIT bytes after the end of the current data have never been + * written, then zero those bytes in order to avoid memory check reports of + * the use of uninitialized (or uninitialised as Julian writes) bytes by + * the longest match routines. Update the high water mark for the next + * time through here. WIN_INIT is set to MAX_MATCH since the longest match + * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. + */ + if (s->high_water < s->window_size) { + ulg curr = s->strstart + (ulg)(s->lookahead); + ulg init; + + if (s->high_water < curr) { + /* Previous high water mark below current data -- zero WIN_INIT + * bytes or up to end of window, whichever is less. + */ + init = s->window_size - curr; + if (init > WIN_INIT) + init = WIN_INIT; + zmemzero(s->window + curr, (unsigned)init); + s->high_water = curr + init; + } + else if (s->high_water < (ulg)curr + WIN_INIT) { + /* High water mark at or above current data, but below current data + * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up + * to end of window, whichever is less. + */ + init = (ulg)curr + WIN_INIT - s->high_water; + if (init > s->window_size - s->high_water) + init = s->window_size - s->high_water; + zmemzero(s->window + s->high_water, (unsigned)init); + s->high_water += init; + } + } + + Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, + "not enough room for search"); +} diff --git a/simd_stub.c b/simd_stub.c new file mode 100644 index 000000000000..c6d46051498f --- /dev/null +++ b/simd_stub.c @@ -0,0 +1,35 @@ +/* simd_stub.c -- stub implementations +* Copyright (C) 2014 Intel Corporation +* For conditions of distribution and use, see copyright notice in zlib.h +*/ +#include <assert.h> + +#include "deflate.h" +#include "x86.h" + +int ZLIB_INTERNAL x86_cpu_enable_simd = 0; + +void ZLIB_INTERNAL crc_fold_init(deflate_state *const s) { + assert(0); +} + +void ZLIB_INTERNAL crc_fold_copy(deflate_state *const s, + unsigned char *dst, + const unsigned char *src, + long len) { + assert(0); +} + +unsigned ZLIB_INTERNAL crc_fold_512to32(deflate_state *const s) { + assert(0); + return 0; +} + +void ZLIB_INTERNAL fill_window_sse(deflate_state *s) +{ + assert(0); +} + +void x86_check_features(void) +{ +} diff --git a/x86.c b/x86.c new file mode 100644 index 000000000000..e56fe8b85a39 --- /dev/null +++ b/x86.c @@ -0,0 +1,92 @@ +/* + * x86 feature check + * + * Copyright (C) 2013 Intel Corporation. All rights reserved. + * Author: + * Jim Kukunas + * + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "x86.h" +#include "zutil.h" + +int ZLIB_INTERNAL x86_cpu_enable_simd = 0; + +#ifndef _MSC_VER +#include <pthread.h> + +pthread_once_t cpu_check_inited_once = PTHREAD_ONCE_INIT; +static void _x86_check_features(void); + +void x86_check_features(void) +{ + pthread_once(&cpu_check_inited_once, _x86_check_features); +} + +static void _x86_check_features(void) +{ + int x86_cpu_has_sse2; + int x86_cpu_has_sse42; + int x86_cpu_has_pclmulqdq; + unsigned eax, ebx, ecx, edx; + + eax = 1; +#ifdef __i386__ + __asm__ __volatile__ ( + "xchg %%ebx, %1\n\t" + "cpuid\n\t" + "xchg %1, %%ebx\n\t" + : "+a" (eax), "=S" (ebx), "=c" (ecx), "=d" (edx) + ); +#else + __asm__ __volatile__ ( + "cpuid\n\t" + : "+a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) + ); +#endif /* (__i386__) */ + + x86_cpu_has_sse2 = edx & 0x4000000; + x86_cpu_has_sse42 = ecx & 0x100000; + x86_cpu_has_pclmulqdq = ecx & 0x2; + + x86_cpu_enable_simd = x86_cpu_has_sse2 && + x86_cpu_has_sse42 && + x86_cpu_has_pclmulqdq; +} +#else +#include <intrin.h> +#include <windows.h> + +static BOOL CALLBACK _x86_check_features(PINIT_ONCE once, + PVOID param, + PVOID *context); +static INIT_ONCE cpu_check_inited_once = INIT_ONCE_STATIC_INIT; + +void x86_check_features(void) +{ + InitOnceExecuteOnce(&cpu_check_inited_once, _x86_check_features, + NULL, NULL); +} + +static BOOL CALLBACK _x86_check_features(PINIT_ONCE once, + PVOID param, + PVOID *context) +{ + int x86_cpu_has_sse2; + int x86_cpu_has_sse42; + int x86_cpu_has_pclmulqdq; + int regs[4]; + + __cpuid(regs, 1); + + x86_cpu_has_sse2 = regs[3] & 0x4000000; + x86_cpu_has_sse42= regs[2] & 0x100000; + x86_cpu_has_pclmulqdq = regs[2] & 0x2; + + x86_cpu_enable_simd = x86_cpu_has_sse2 && + x86_cpu_has_sse42 && + x86_cpu_has_pclmulqdq; + return TRUE; +} +#endif /* _MSC_VER */ diff --git a/x86.h b/x86.h new file mode 100644 index 000000000000..ebcf10ab09d2 --- /dev/null +++ b/x86.h @@ -0,0 +1,15 @@ +/* x86.h -- check for x86 CPU features +* Copyright (C) 2013 Intel Corporation Jim Kukunas +* For conditions of distribution and use, see copyright notice in zlib.h +*/ + +#ifndef X86_H +#define X86_H + +#include "zlib.h" + +extern int x86_cpu_enable_simd; + +void x86_check_features(void); + +#endif /* X86_H */ diff --git a/zutil.h b/zutil.h index 80375b8b6109..4425bcf75eb3 100644 --- a/zutil.h +++ b/zutil.h @@ -283,4 +283,10 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) +#ifdef _MSC_VER +#define zalign(x) __declspec(align(x)) +#else +#define zalign(x) __attribute__((aligned((x)))) +#endif + #endif /* ZUTIL_H */