+++ /dev/null
-/*
- * xxHash - Extremely Fast Hash algorithm
- * Copyright (C) 2020 Yann Collet
- *
- * BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
- *
- * 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.
- *
- * 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.
- *
- * You can contact the author at:
- * - xxHash homepage: https://www.xxhash.com
- * - xxHash source repository: https://github.com/Cyan4973/xxHash
- */
-
-
-/*!
- * @file xxh_x86dispatch.c
- *
- * Automatic dispatcher code for the @ref xxh3_family on x86-based targets.
- *
- * Optional add-on.
- *
- * **Compile this file with the default flags for your target.** Do not compile
- * with flags like `-mavx*`, `-march=native`, or `/arch:AVX*`, there will be
- * an error. See @ref XXH_X86DISPATCH_ALLOW_AVX for details.
- *
- * @defgroup dispatch x86 Dispatcher
- * @{
- */
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
-#if !(defined(__x86_64__) || defined(__i386__) || defined(_M_IX86) || defined(_M_X64))
-# error "Dispatching is currently only supported on x86 and x86_64."
-#endif
-
-/*!
- * @def XXH_X86DISPATCH_ALLOW_AVX
- * @brief Disables the AVX sanity check.
- *
- * Don't compile xxh_x86dispatch.c with options like `-mavx*`, `-march=native`,
- * or `/arch:AVX*`. It is intended to be compiled for the minimum target, and
- * it selectively enables SSE2, AVX2, and AVX512 when it is needed.
- *
- * Using this option _globally_ allows this feature, and therefore makes it
- * undefined behavior to execute on any CPU without said feature.
- *
- * Even if the source code isn't directly using AVX intrinsics in a function,
- * the compiler can still generate AVX code from autovectorization and by
- * "upgrading" SSE2 intrinsics to use the VEX prefixes (a.k.a. AVX128).
- *
- * Use the same flags that you use to compile the rest of the program; this
- * file will safely generate SSE2, AVX2, and AVX512 without these flags.
- *
- * Define XXH_X86DISPATCH_ALLOW_AVX to ignore this check, and feel free to open
- * an issue if there is a target in the future where AVX is a default feature.
- */
-#ifdef XXH_DOXYGEN
-# define XXH_X86DISPATCH_ALLOW_AVX
-#endif
-
-#if defined(__AVX__) && !defined(XXH_X86DISPATCH_ALLOW_AVX)
-# error "Do not compile xxh_x86dispatch.c with AVX enabled! See the comment above."
-#endif
-
-#ifdef __has_include
-# define XXH_HAS_INCLUDE(header) __has_include(header)
-#else
-# define XXH_HAS_INCLUDE(header) 0
-#endif
-
-/*!
- * @def XXH_DISPATCH_SCALAR
- * @brief Enables/dispatching the scalar code path.
- *
- * If this is defined to 0, SSE2 support is assumed. This reduces code size
- * when the scalar path is not needed.
- *
- * This is automatically defined to 0 when...
- * - SSE2 support is enabled in the compiler
- * - Targeting x86_64
- * - Targeting Android x86
- * - Targeting macOS
- */
-#ifndef XXH_DISPATCH_SCALAR
-# if defined(__SSE2__) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2) /* SSE2 on by default */ \
- || defined(__x86_64__) || defined(_M_X64) /* x86_64 */ \
- || defined(__ANDROID__) || defined(__APPLEv__) /* Android or macOS */
-# define XXH_DISPATCH_SCALAR 0 /* disable */
-# else
-# define XXH_DISPATCH_SCALAR 1
-# endif
-#endif
-/*!
- * @def XXH_DISPATCH_AVX2
- * @brief Enables/disables dispatching for AVX2.
- *
- * This is automatically detected if it is not defined.
- * - GCC 4.7 and later are known to support AVX2, but >4.9 is required for
- * to get the AVX2 intrinsics and typedefs without -mavx -mavx2.
- * - Visual Studio 2013 Update 2 and later are known to support AVX2.
- * - The GCC/Clang internal header `<avx2intrin.h>` is detected. While this is
- * not allowed to be included directly, it still appears in the builtin
- * include path and is detectable with `__has_include`.
- *
- * @see XXH_AVX2
- */
-#ifndef XXH_DISPATCH_AVX2
-# if (defined(__GNUC__) && (__GNUC__ > 4)) /* GCC 5.0+ */ \
- || (defined(_MSC_VER) && _MSC_VER >= 1900) /* VS 2015+ */ \
- || (defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 180030501) /* VS 2013 Update 2 */ \
- || XXH_HAS_INCLUDE(<avx2intrin.h>) /* GCC/Clang internal header */
-# define XXH_DISPATCH_AVX2 1 /* enable dispatch towards AVX2 */
-# else
-# define XXH_DISPATCH_AVX2 0
-# endif
-#endif /* XXH_DISPATCH_AVX2 */
-
-/*!
- * @def XXH_DISPATCH_AVX512
- * @brief Enables/disables dispatching for AVX512.
- *
- * Automatically detected if one of the following conditions is met:
- * - GCC 4.9 and later are known to support AVX512.
- * - Visual Studio 2017 and later are known to support AVX2.
- * - The GCC/Clang internal header `<avx512fintrin.h>` is detected. While this
- * is not allowed to be included directly, it still appears in the builtin
- * include path and is detectable with `__has_include`.
- *
- * @see XXH_AVX512
- */
-#ifndef XXH_DISPATCH_AVX512
-# if (defined(__GNUC__) \
- && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9))) /* GCC 4.9+ */ \
- || (defined(_MSC_VER) && _MSC_VER >= 1910) /* VS 2017+ */ \
- || XXH_HAS_INCLUDE(<avx512fintrin.h>) /* GCC/Clang internal header */
-# define XXH_DISPATCH_AVX512 1 /* enable dispatch towards AVX512 */
-# else
-# define XXH_DISPATCH_AVX512 0
-# endif
-#endif /* XXH_DISPATCH_AVX512 */
-
-/*!
- * @def XXH_TARGET_SSE2
- * @brief Allows a function to be compiled with SSE2 intrinsics.
- *
- * Uses `__attribute__((__target__("sse2")))` on GCC to allow SSE2 to be used
- * even with `-mno-sse2`.
- *
- * @def XXH_TARGET_AVX2
- * @brief Like @ref XXH_TARGET_SSE2, but for AVX2.
- *
- * @def XXH_TARGET_AVX512
- * @brief Like @ref XXH_TARGET_SSE2, but for AVX512.
- */
-#if defined(__GNUC__)
-# include <emmintrin.h> /* SSE2 */
-# if XXH_DISPATCH_AVX2 || XXH_DISPATCH_AVX512
-# include <immintrin.h> /* AVX2, AVX512F */
-# endif
-# define XXH_TARGET_SSE2 __attribute__((__target__("sse2")))
-# define XXH_TARGET_AVX2 __attribute__((__target__("avx2")))
-# define XXH_TARGET_AVX512 __attribute__((__target__("avx512f")))
-#elif defined(_MSC_VER)
-# include <intrin.h>
-# define XXH_TARGET_SSE2
-# define XXH_TARGET_AVX2
-# define XXH_TARGET_AVX512
-#else
-# error "Dispatching is currently not supported for your compiler."
-#endif
-
-#ifdef XXH_DISPATCH_DEBUG
-/* debug logging */
-# include <stdio.h>
-# define XXH_debugPrint(str) { fprintf(stderr, "DEBUG: xxHash dispatch: %s \n", str); fflush(NULL); }
-#else
-# define XXH_debugPrint(str) ((void)0)
-# undef NDEBUG /* avoid redefinition */
-# define NDEBUG
-#endif
-#include <assert.h>
-
-#define XXH_INLINE_ALL
-#define XXH_X86DISPATCH
-#include "xxhash.h"
-
-/*
- * Support both AT&T and Intel dialects
- *
- * GCC doesn't convert AT&T syntax to Intel syntax, and will error out if
- * compiled with -masm=intel. Instead, it supports dialect switching with
- * curly braces: { AT&T syntax | Intel syntax }
- *
- * Clang's integrated assembler automatically converts AT&T syntax to Intel if
- * needed, making the dialect switching useless (it isn't even supported).
- *
- * Note: Comments are written in the inline assembly itself.
- */
-#ifdef __clang__
-# define XXH_I_ATT(intel, att) att "\n\t"
-#else
-# define XXH_I_ATT(intel, att) "{" att "|" intel "}\n\t"
-#endif
-
-/*!
- * @internal
- * @brief Runs CPUID.
- *
- * @param eax , ecx The parameters to pass to CPUID, %eax and %ecx respectively.
- * @param abcd The array to store the result in, `{ eax, ebx, ecx, edx }`
- */
-static void XXH_cpuid(xxh_u32 eax, xxh_u32 ecx, xxh_u32* abcd)
-{
-#if defined(_MSC_VER)
- __cpuidex(abcd, eax, ecx);
-#else
- xxh_u32 ebx, edx;
-# if defined(__i386__) && defined(__PIC__)
- __asm__(
- "# Call CPUID\n\t"
- "#\n\t"
- "# On 32-bit x86 with PIC enabled, we are not allowed to overwrite\n\t"
- "# EBX, so we use EDI instead.\n\t"
- XXH_I_ATT("mov edi, ebx", "movl %%ebx, %%edi")
- XXH_I_ATT("cpuid", "cpuid" )
- XXH_I_ATT("xchg edi, ebx", "xchgl %%ebx, %%edi")
- : "=D" (ebx),
-# else
- __asm__(
- "# Call CPUID\n\t"
- XXH_I_ATT("cpuid", "cpuid")
- : "=b" (ebx),
-# endif
- "+a" (eax), "+c" (ecx), "=d" (edx));
- abcd[0] = eax;
- abcd[1] = ebx;
- abcd[2] = ecx;
- abcd[3] = edx;
-#endif
-}
-
-/*
- * Modified version of Intel's guide
- * https://software.intel.com/en-us/articles/how-to-detect-new-instruction-support-in-the-4th-generation-intel-core-processor-family
- */
-
-#if XXH_DISPATCH_AVX2 || XXH_DISPATCH_AVX512
-/*!
- * @internal
- * @brief Runs `XGETBV`.
- *
- * While the CPU may support AVX2, the operating system might not properly save
- * the full YMM/ZMM registers.
- *
- * xgetbv is used for detecting this: Any compliant operating system will define
- * a set of flags in the xcr0 register indicating how it saves the AVX registers.
- *
- * You can manually disable this flag on Windows by running, as admin:
- *
- * bcdedit.exe /set xsavedisable 1
- *
- * and rebooting. Run the same command with 0 to re-enable it.
- */
-static xxh_u64 XXH_xgetbv(void)
-{
-#if defined(_MSC_VER)
- return _xgetbv(0); /* min VS2010 SP1 compiler is required */
-#else
- xxh_u32 xcr0_lo, xcr0_hi;
- __asm__(
- "# Call XGETBV\n\t"
- "#\n\t"
- "# Older assemblers (e.g. macOS's ancient GAS version) don't support\n\t"
- "# the XGETBV opcode, so we encode it by hand instead.\n\t"
- "# See <https://github.com/asmjit/asmjit/issues/78> for details.\n\t"
- ".byte 0x0f, 0x01, 0xd0\n\t"
- : "=a" (xcr0_lo), "=d" (xcr0_hi) : "c" (0));
- return xcr0_lo | ((xxh_u64)xcr0_hi << 32);
-#endif
-}
-#endif
-
-#define XXH_SSE2_CPUID_MASK (1 << 26)
-#define XXH_OSXSAVE_CPUID_MASK ((1 << 26) | (1 << 27))
-#define XXH_AVX2_CPUID_MASK (1 << 5)
-#define XXH_AVX2_XGETBV_MASK ((1 << 2) | (1 << 1))
-#define XXH_AVX512F_CPUID_MASK (1 << 16)
-#define XXH_AVX512F_XGETBV_MASK ((7 << 5) | (1 << 2) | (1 << 1))
-
-/*!
- * @internal
- * @brief Returns the best XXH3 implementation.
- *
- * Runs various CPUID/XGETBV tests to try and determine the best implementation.
- *
- * @ret The best @ref XXH_VECTOR implementation.
- * @see XXH_VECTOR_TYPES
- */
-static int XXH_featureTest(void)
-{
- xxh_u32 abcd[4];
- xxh_u32 max_leaves;
- int best = XXH_SCALAR;
-#if XXH_DISPATCH_AVX2 || XXH_DISPATCH_AVX512
- xxh_u64 xgetbv_val;
-#endif
-#if defined(__GNUC__) && defined(__i386__)
- xxh_u32 cpuid_supported;
- __asm__(
- "# For the sake of ruthless backwards compatibility, check if CPUID\n\t"
- "# is supported in the EFLAGS on i386.\n\t"
- "# This is not necessary on x86_64 - CPUID is mandatory.\n\t"
- "# The ID flag (bit 21) in the EFLAGS register indicates support\n\t"
- "# for the CPUID instruction. If a software procedure can set and\n\t"
- "# clear this flag, the processor executing the procedure supports\n\t"
- "# the CPUID instruction.\n\t"
- "# <https://c9x.me/x86/html/file_module_x86_id_45.html>\n\t"
- "#\n\t"
- "# Routine is from <https://wiki.osdev.org/CPUID>.\n\t"
-
- "# Save EFLAGS\n\t"
- XXH_I_ATT("pushfd", "pushfl" )
- "# Store EFLAGS\n\t"
- XXH_I_ATT("pushfd", "pushfl" )
- "# Invert the ID bit in stored EFLAGS\n\t"
- XXH_I_ATT("xor dword ptr[esp], 0x200000", "xorl $0x200000, (%%esp)")
- "# Load stored EFLAGS (with ID bit inverted)\n\t"
- XXH_I_ATT("popfd", "popfl" )
- "# Store EFLAGS again (ID bit may or not be inverted)\n\t"
- XXH_I_ATT("pushfd", "pushfl" )
- "# eax = modified EFLAGS (ID bit may or may not be inverted)\n\t"
- XXH_I_ATT("pop eax", "popl %%eax" )
- "# eax = whichever bits were changed\n\t"
- XXH_I_ATT("xor eax, dword ptr[esp]", "xorl (%%esp), %%eax" )
- "# Restore original EFLAGS\n\t"
- XXH_I_ATT("popfd", "popfl" )
- "# eax = zero if ID bit can't be changed, else non-zero\n\t"
- XXH_I_ATT("and eax, 0x200000", "andl $0x200000, %%eax" )
- : "=a" (cpuid_supported) :: "cc");
-
- if (XXH_unlikely(!cpuid_supported)) {
- XXH_debugPrint("CPUID support is not detected!");
- return best;
- }
-
-#endif
- /* Check how many CPUID pages we have */
- XXH_cpuid(0, 0, abcd);
- max_leaves = abcd[0];
-
- /* Shouldn't happen on hardware, but happens on some QEMU configs. */
- if (XXH_unlikely(max_leaves == 0)) {
- XXH_debugPrint("Max CPUID leaves == 0!");
- return best;
- }
-
- /* Check for SSE2, OSXSAVE and xgetbv */
- XXH_cpuid(1, 0, abcd);
-
- /*
- * Test for SSE2. The check is redundant on x86_64, but it doesn't hurt.
- */
- if (XXH_unlikely((abcd[3] & XXH_SSE2_CPUID_MASK) != XXH_SSE2_CPUID_MASK))
- return best;
-
- XXH_debugPrint("SSE2 support detected.");
-
- best = XXH_SSE2;
-#if XXH_DISPATCH_AVX2 || XXH_DISPATCH_AVX512
- /* Make sure we have enough leaves */
- if (XXH_unlikely(max_leaves < 7))
- return best;
-
- /* Test for OSXSAVE and XGETBV */
- if ((abcd[2] & XXH_OSXSAVE_CPUID_MASK) != XXH_OSXSAVE_CPUID_MASK)
- return best;
-
- /* CPUID check for AVX features */
- XXH_cpuid(7, 0, abcd);
-
- xgetbv_val = XXH_xgetbv();
-#if XXH_DISPATCH_AVX2
- /* Validate that AVX2 is supported by the CPU */
- if ((abcd[1] & XXH_AVX2_CPUID_MASK) != XXH_AVX2_CPUID_MASK)
- return best;
-
- /* Validate that the OS supports YMM registers */
- if ((xgetbv_val & XXH_AVX2_XGETBV_MASK) != XXH_AVX2_XGETBV_MASK) {
- XXH_debugPrint("AVX2 supported by the CPU, but not the OS.");
- return best;
- }
-
- /* AVX2 supported */
- XXH_debugPrint("AVX2 support detected.");
- best = XXH_AVX2;
-#endif
-#if XXH_DISPATCH_AVX512
- /* Check if AVX512F is supported by the CPU */
- if ((abcd[1] & XXH_AVX512F_CPUID_MASK) != XXH_AVX512F_CPUID_MASK) {
- XXH_debugPrint("AVX512F not supported by CPU");
- return best;
- }
-
- /* Validate that the OS supports ZMM registers */
- if ((xgetbv_val & XXH_AVX512F_XGETBV_MASK) != XXH_AVX512F_XGETBV_MASK) {
- XXH_debugPrint("AVX512F supported by the CPU, but not the OS.");
- return best;
- }
-
- /* AVX512F supported */
- XXH_debugPrint("AVX512F support detected.");
- best = XXH_AVX512;
-#endif
-#endif
- return best;
-}
-
-
-/* === Vector implementations === */
-
-/*!
- * @internal
- * @brief Defines the various dispatch functions.
- *
- * TODO: Consolidate?
- *
- * @param suffix The suffix for the functions, e.g. sse2 or scalar
- * @param target XXH_TARGET_* or empty.
- */
-#define XXH_DEFINE_DISPATCH_FUNCS(suffix, target) \
- \
-/* === XXH3, default variants === */ \
- \
-XXH_NO_INLINE target XXH64_hash_t \
-XXHL64_default_##suffix(const void* XXH_RESTRICT input, size_t len) \
-{ \
- return XXH3_hashLong_64b_internal( \
- input, len, XXH3_kSecret, sizeof(XXH3_kSecret), \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix \
- ); \
-} \
- \
-/* === XXH3, Seeded variants === */ \
- \
-XXH_NO_INLINE target XXH64_hash_t \
-XXHL64_seed_##suffix(const void* XXH_RESTRICT input, size_t len, \
- XXH64_hash_t seed) \
-{ \
- return XXH3_hashLong_64b_withSeed_internal( \
- input, len, seed, XXH3_accumulate_512_##suffix, \
- XXH3_scrambleAcc_##suffix, XXH3_initCustomSecret_##suffix \
- ); \
-} \
- \
-/* === XXH3, Secret variants === */ \
- \
-XXH_NO_INLINE target XXH64_hash_t \
-XXHL64_secret_##suffix(const void* XXH_RESTRICT input, size_t len, \
- const void* secret, size_t secretLen) \
-{ \
- return XXH3_hashLong_64b_internal( \
- input, len, secret, secretLen, \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix \
- ); \
-} \
- \
-/* === XXH3 update variants === */ \
- \
-XXH_NO_INLINE target XXH_errorcode \
-XXH3_update_##suffix(XXH3_state_t* state, const void* input, size_t len) \
-{ \
- return XXH3_update(state, (const xxh_u8*)input, len, \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix); \
-} \
- \
-/* === XXH128 default variants === */ \
- \
-XXH_NO_INLINE target XXH128_hash_t \
-XXHL128_default_##suffix(const void* XXH_RESTRICT input, size_t len) \
-{ \
- return XXH3_hashLong_128b_internal( \
- input, len, XXH3_kSecret, sizeof(XXH3_kSecret), \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix \
- ); \
-} \
- \
-/* === XXH128 Secret variants === */ \
- \
-XXH_NO_INLINE target XXH128_hash_t \
-XXHL128_secret_##suffix(const void* XXH_RESTRICT input, size_t len, \
- const void* XXH_RESTRICT secret, size_t secretLen) \
-{ \
- return XXH3_hashLong_128b_internal( \
- input, len, (const xxh_u8*)secret, secretLen, \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix); \
-} \
- \
-/* === XXH128 Seeded variants === */ \
- \
-XXH_NO_INLINE target XXH128_hash_t \
-XXHL128_seed_##suffix(const void* XXH_RESTRICT input, size_t len, \
- XXH64_hash_t seed) \
-{ \
- return XXH3_hashLong_128b_withSeed_internal(input, len, seed, \
- XXH3_accumulate_512_##suffix, XXH3_scrambleAcc_##suffix, \
- XXH3_initCustomSecret_##suffix); \
-}
-
-/* End XXH_DEFINE_DISPATCH_FUNCS */
-
-#if XXH_DISPATCH_SCALAR
-XXH_DEFINE_DISPATCH_FUNCS(scalar, /* nothing */)
-#endif
-XXH_DEFINE_DISPATCH_FUNCS(sse2, XXH_TARGET_SSE2)
-#if XXH_DISPATCH_AVX2
-XXH_DEFINE_DISPATCH_FUNCS(avx2, XXH_TARGET_AVX2)
-#endif
-#if XXH_DISPATCH_AVX512
-XXH_DEFINE_DISPATCH_FUNCS(avx512, XXH_TARGET_AVX512)
-#endif
-#undef XXH_DEFINE_DISPATCH_FUNCS
-
-/* ==== Dispatchers ==== */
-
-typedef XXH64_hash_t (*XXH3_dispatchx86_hashLong64_default)(const void* XXH_RESTRICT, size_t);
-
-typedef XXH64_hash_t (*XXH3_dispatchx86_hashLong64_withSeed)(const void* XXH_RESTRICT, size_t, XXH64_hash_t);
-
-typedef XXH64_hash_t (*XXH3_dispatchx86_hashLong64_withSecret)(const void* XXH_RESTRICT, size_t, const void* XXH_RESTRICT, size_t);
-
-typedef XXH_errorcode (*XXH3_dispatchx86_update)(XXH3_state_t*, const void*, size_t);
-
-typedef struct {
- XXH3_dispatchx86_hashLong64_default hashLong64_default;
- XXH3_dispatchx86_hashLong64_withSeed hashLong64_seed;
- XXH3_dispatchx86_hashLong64_withSecret hashLong64_secret;
- XXH3_dispatchx86_update update;
-} XXH_dispatchFunctions_s;
-
-#define XXH_NB_DISPATCHES 4
-
-/*!
- * @internal
- * @brief Table of dispatchers for @ref XXH3_64bits().
- *
- * @pre The indices must match @ref XXH_VECTOR_TYPE.
- */
-static const XXH_dispatchFunctions_s XXH_kDispatch[XXH_NB_DISPATCHES] = {
-#if XXH_DISPATCH_SCALAR
- /* Scalar */ { XXHL64_default_scalar, XXHL64_seed_scalar, XXHL64_secret_scalar, XXH3_update_scalar },
-#else
- /* Scalar */ { NULL, NULL, NULL, NULL },
-#endif
- /* SSE2 */ { XXHL64_default_sse2, XXHL64_seed_sse2, XXHL64_secret_sse2, XXH3_update_sse2 },
-#if XXH_DISPATCH_AVX2
- /* AVX2 */ { XXHL64_default_avx2, XXHL64_seed_avx2, XXHL64_secret_avx2, XXH3_update_avx2 },
-#else
- /* AVX2 */ { NULL, NULL, NULL, NULL },
-#endif
-#if XXH_DISPATCH_AVX512
- /* AVX512 */ { XXHL64_default_avx512, XXHL64_seed_avx512, XXHL64_secret_avx512, XXH3_update_avx512 }
-#else
- /* AVX512 */ { NULL, NULL, NULL, NULL }
-#endif
-};
-/*!
- * @internal
- * @brief The selected dispatch table for @ref XXH3_64bits().
- */
-static XXH_dispatchFunctions_s XXH_g_dispatch = { NULL, NULL, NULL, NULL };
-
-
-typedef XXH128_hash_t (*XXH3_dispatchx86_hashLong128_default)(const void* XXH_RESTRICT, size_t);
-
-typedef XXH128_hash_t (*XXH3_dispatchx86_hashLong128_withSeed)(const void* XXH_RESTRICT, size_t, XXH64_hash_t);
-
-typedef XXH128_hash_t (*XXH3_dispatchx86_hashLong128_withSecret)(const void* XXH_RESTRICT, size_t, const void* XXH_RESTRICT, size_t);
-
-typedef struct {
- XXH3_dispatchx86_hashLong128_default hashLong128_default;
- XXH3_dispatchx86_hashLong128_withSeed hashLong128_seed;
- XXH3_dispatchx86_hashLong128_withSecret hashLong128_secret;
- XXH3_dispatchx86_update update;
-} XXH_dispatch128Functions_s;
-
-
-/*!
- * @internal
- * @brief Table of dispatchers for @ref XXH3_128bits().
- *
- * @pre The indices must match @ref XXH_VECTOR_TYPE.
- */
-static const XXH_dispatch128Functions_s XXH_kDispatch128[XXH_NB_DISPATCHES] = {
-#if XXH_DISPATCH_SCALAR
- /* Scalar */ { XXHL128_default_scalar, XXHL128_seed_scalar, XXHL128_secret_scalar, XXH3_update_scalar },
-#else
- /* Scalar */ { NULL, NULL, NULL, NULL },
-#endif
- /* SSE2 */ { XXHL128_default_sse2, XXHL128_seed_sse2, XXHL128_secret_sse2, XXH3_update_sse2 },
-#if XXH_DISPATCH_AVX2
- /* AVX2 */ { XXHL128_default_avx2, XXHL128_seed_avx2, XXHL128_secret_avx2, XXH3_update_avx2 },
-#else
- /* AVX2 */ { NULL, NULL, NULL, NULL },
-#endif
-#if XXH_DISPATCH_AVX512
- /* AVX512 */ { XXHL128_default_avx512, XXHL128_seed_avx512, XXHL128_secret_avx512, XXH3_update_avx512 }
-#else
- /* AVX512 */ { NULL, NULL, NULL, NULL }
-#endif
-};
-
-/*!
- * @internal
- * @brief The selected dispatch table for @ref XXH3_64bits().
- */
-static XXH_dispatch128Functions_s XXH_g_dispatch128 = { NULL, NULL, NULL, NULL };
-
-/*!
- * @internal
- * @brief Runs a CPUID check and sets the correct dispatch tables.
- */
-static void XXH_setDispatch(void)
-{
- int vecID = XXH_featureTest();
- XXH_STATIC_ASSERT(XXH_AVX512 == XXH_NB_DISPATCHES-1);
- assert(XXH_SCALAR <= vecID && vecID <= XXH_AVX512);
-#if !XXH_DISPATCH_SCALAR
- assert(vecID != XXH_SCALAR);
-#endif
-#if !XXH_DISPATCH_AVX512
- assert(vecID != XXH_AVX512);
-#endif
-#if !XXH_DISPATCH_AVX2
- assert(vecID != XXH_AVX2);
-#endif
- XXH_g_dispatch = XXH_kDispatch[vecID];
- XXH_g_dispatch128 = XXH_kDispatch128[vecID];
-}
-
-
-/* ==== XXH3 public functions ==== */
-
-static XXH64_hash_t
-XXH3_hashLong_64b_defaultSecret_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const xxh_u8* secret, size_t secretLen)
-{
- (void)seed64; (void)secret; (void)secretLen;
- if (XXH_g_dispatch.hashLong64_default == NULL) XXH_setDispatch();
- return XXH_g_dispatch.hashLong64_default(input, len);
-}
-
-XXH64_hash_t XXH3_64bits_dispatch(const void* input, size_t len)
-{
- return XXH3_64bits_internal(input, len, 0, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_64b_defaultSecret_selection);
-}
-
-static XXH64_hash_t
-XXH3_hashLong_64b_withSeed_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const xxh_u8* secret, size_t secretLen)
-{
- (void)secret; (void)secretLen;
- if (XXH_g_dispatch.hashLong64_seed == NULL) XXH_setDispatch();
- return XXH_g_dispatch.hashLong64_seed(input, len, seed64);
-}
-
-XXH64_hash_t XXH3_64bits_withSeed_dispatch(const void* input, size_t len, XXH64_hash_t seed)
-{
- return XXH3_64bits_internal(input, len, seed, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_64b_withSeed_selection);
-}
-
-static XXH64_hash_t
-XXH3_hashLong_64b_withSecret_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const xxh_u8* secret, size_t secretLen)
-{
- (void)seed64;
- if (XXH_g_dispatch.hashLong64_secret == NULL) XXH_setDispatch();
- return XXH_g_dispatch.hashLong64_secret(input, len, secret, secretLen);
-}
-
-XXH64_hash_t XXH3_64bits_withSecret_dispatch(const void* input, size_t len, const void* secret, size_t secretLen)
-{
- return XXH3_64bits_internal(input, len, 0, secret, secretLen, XXH3_hashLong_64b_withSecret_selection);
-}
-
-XXH_errorcode
-XXH3_64bits_update_dispatch(XXH3_state_t* state, const void* input, size_t len)
-{
- if (XXH_g_dispatch.update == NULL) XXH_setDispatch();
- return XXH_g_dispatch.update(state, (const xxh_u8*)input, len);
-}
-
-
-/* ==== XXH128 public functions ==== */
-
-static XXH128_hash_t
-XXH3_hashLong_128b_defaultSecret_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const void* secret, size_t secretLen)
-{
- (void)seed64; (void)secret; (void)secretLen;
- if (XXH_g_dispatch128.hashLong128_default == NULL) XXH_setDispatch();
- return XXH_g_dispatch128.hashLong128_default(input, len);
-}
-
-XXH128_hash_t XXH3_128bits_dispatch(const void* input, size_t len)
-{
- return XXH3_128bits_internal(input, len, 0, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_128b_defaultSecret_selection);
-}
-
-static XXH128_hash_t
-XXH3_hashLong_128b_withSeed_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const void* secret, size_t secretLen)
-{
- (void)secret; (void)secretLen;
- if (XXH_g_dispatch128.hashLong128_seed == NULL) XXH_setDispatch();
- return XXH_g_dispatch128.hashLong128_seed(input, len, seed64);
-}
-
-XXH128_hash_t XXH3_128bits_withSeed_dispatch(const void* input, size_t len, XXH64_hash_t seed)
-{
- return XXH3_128bits_internal(input, len, seed, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_128b_withSeed_selection);
-}
-
-static XXH128_hash_t
-XXH3_hashLong_128b_withSecret_selection(const void* input, size_t len,
- XXH64_hash_t seed64, const void* secret, size_t secretLen)
-{
- (void)seed64;
- if (XXH_g_dispatch128.hashLong128_secret == NULL) XXH_setDispatch();
- return XXH_g_dispatch128.hashLong128_secret(input, len, secret, secretLen);
-}
-
-XXH128_hash_t XXH3_128bits_withSecret_dispatch(const void* input, size_t len, const void* secret, size_t secretLen)
-{
- return XXH3_128bits_internal(input, len, 0, secret, secretLen, XXH3_hashLong_128b_withSecret_selection);
-}
-
-XXH_errorcode
-XXH3_128bits_update_dispatch(XXH3_state_t* state, const void* input, size_t len)
-{
- if (XXH_g_dispatch128.update == NULL) XXH_setDispatch();
- return XXH_g_dispatch128.update(state, (const xxh_u8*)input, len);
-}
-
-#if defined (__cplusplus)
-}
-#endif
-/*! @} */
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