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zstd: Update to upstream version 1.5.2
Release notes: - https://github.com/facebook/zstd/releases/tag/v1.5.1 - https://github.com/facebook/zstd/releases/tag/v1.5.2
This commit is contained in:
Rémi Verschelde
138
thirdparty/zstd/common/compiler.h
vendored
138
thirdparty/zstd/common/compiler.h
vendored
@@ -11,6 +11,8 @@
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#ifndef ZSTD_COMPILER_H
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#define ZSTD_COMPILER_H
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#include "portability_macros.h"
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/*-*******************************************************
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* Compiler specifics
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*********************************************************/
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@@ -40,7 +42,7 @@
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/**
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On MSVC qsort requires that functions passed into it use the __cdecl calling conversion(CC).
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This explictly marks such functions as __cdecl so that the code will still compile
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This explicitly marks such functions as __cdecl so that the code will still compile
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if a CC other than __cdecl has been made the default.
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*/
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#if defined(_MSC_VER)
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@@ -92,29 +94,17 @@
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/* target attribute */
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#ifndef __has_attribute
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#define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */
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#endif
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#if defined(__GNUC__) || defined(__ICCARM__)
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# define TARGET_ATTRIBUTE(target) __attribute__((__target__(target)))
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#else
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# define TARGET_ATTRIBUTE(target)
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#endif
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/* Enable runtime BMI2 dispatch based on the CPU.
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* Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default.
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/* Target attribute for BMI2 dynamic dispatch.
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* Enable lzcnt, bmi, and bmi2.
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* We test for bmi1 & bmi2. lzcnt is included in bmi1.
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*/
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#ifndef DYNAMIC_BMI2
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#if ((defined(__clang__) && __has_attribute(__target__)) \
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|| (defined(__GNUC__) \
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&& (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \
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&& (defined(__x86_64__) || defined(_M_X86)) \
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&& !defined(__BMI2__)
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# define DYNAMIC_BMI2 1
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#else
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# define DYNAMIC_BMI2 0
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#endif
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#endif
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#define BMI2_TARGET_ATTRIBUTE TARGET_ATTRIBUTE("lzcnt,bmi,bmi2")
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/* prefetch
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* can be disabled, by declaring NO_PREFETCH build macro */
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@@ -150,8 +140,9 @@
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}
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/* vectorization
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* older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax */
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#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__)
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* older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax,
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* and some compilers, like Intel ICC and MCST LCC, do not support it at all. */
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#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__) && !defined(__LCC__)
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# if (__GNUC__ == 4 && __GNUC_MINOR__ > 3) || (__GNUC__ >= 5)
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# define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize")))
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# else
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@@ -197,25 +188,91 @@
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#define STATIC_BMI2 0
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#endif
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/* compat. with non-clang compilers */
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#ifndef __has_builtin
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# define __has_builtin(x) 0
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#endif
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/* compat. with non-clang compilers */
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#ifndef __has_feature
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# define __has_feature(x) 0
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#endif
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/* detects whether we are being compiled under msan */
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#ifndef ZSTD_MEMORY_SANITIZER
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# if __has_feature(memory_sanitizer)
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# define ZSTD_MEMORY_SANITIZER 1
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# else
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# define ZSTD_MEMORY_SANITIZER 0
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/* compile time determination of SIMD support */
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#if !defined(ZSTD_NO_INTRINSICS)
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# if defined(__SSE2__) || defined(_M_AMD64) || (defined (_M_IX86) && defined(_M_IX86_FP) && (_M_IX86_FP >= 2))
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# define ZSTD_ARCH_X86_SSE2
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# endif
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# if defined(__ARM_NEON) || defined(_M_ARM64)
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# define ZSTD_ARCH_ARM_NEON
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# endif
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#
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# if defined(ZSTD_ARCH_X86_SSE2)
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# include <emmintrin.h>
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# elif defined(ZSTD_ARCH_ARM_NEON)
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# include <arm_neon.h>
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# endif
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#endif
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/* C-language Attributes are added in C23. */
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ > 201710L) && defined(__has_c_attribute)
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# define ZSTD_HAS_C_ATTRIBUTE(x) __has_c_attribute(x)
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#else
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# define ZSTD_HAS_C_ATTRIBUTE(x) 0
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#endif
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/* Only use C++ attributes in C++. Some compilers report support for C++
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* attributes when compiling with C.
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*/
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#if defined(__cplusplus) && defined(__has_cpp_attribute)
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# define ZSTD_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
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#else
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# define ZSTD_HAS_CPP_ATTRIBUTE(x) 0
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#endif
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/* Define ZSTD_FALLTHROUGH macro for annotating switch case with the 'fallthrough' attribute.
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* - C23: https://en.cppreference.com/w/c/language/attributes/fallthrough
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* - CPP17: https://en.cppreference.com/w/cpp/language/attributes/fallthrough
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* - Else: __attribute__((__fallthrough__))
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*/
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#ifndef ZSTD_FALLTHROUGH
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# if ZSTD_HAS_C_ATTRIBUTE(fallthrough)
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# define ZSTD_FALLTHROUGH [[fallthrough]]
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# elif ZSTD_HAS_CPP_ATTRIBUTE(fallthrough)
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# define ZSTD_FALLTHROUGH [[fallthrough]]
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# elif __has_attribute(__fallthrough__)
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/* Leading semicolon is to satisfy gcc-11 with -pedantic. Without the semicolon
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* gcc complains about: a label can only be part of a statement and a declaration is not a statement.
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*/
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# define ZSTD_FALLTHROUGH ; __attribute__((__fallthrough__))
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# else
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# define ZSTD_FALLTHROUGH
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# endif
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#endif
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/*-**************************************************************
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* Alignment check
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*****************************************************************/
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/* this test was initially positioned in mem.h,
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* but this file is removed (or replaced) for linux kernel
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* so it's now hosted in compiler.h,
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* which remains valid for both user & kernel spaces.
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*/
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#ifndef ZSTD_ALIGNOF
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# if defined(__GNUC__) || defined(_MSC_VER)
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/* covers gcc, clang & MSVC */
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/* note : this section must come first, before C11,
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* due to a limitation in the kernel source generator */
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# define ZSTD_ALIGNOF(T) __alignof(T)
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# elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
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/* C11 support */
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# include <stdalign.h>
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# define ZSTD_ALIGNOF(T) alignof(T)
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# else
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/* No known support for alignof() - imperfect backup */
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# define ZSTD_ALIGNOF(T) (sizeof(void*) < sizeof(T) ? sizeof(void*) : sizeof(T))
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# endif
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#endif /* ZSTD_ALIGNOF */
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/*-**************************************************************
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* Sanitizer
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*****************************************************************/
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#if ZSTD_MEMORY_SANITIZER
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/* Not all platforms that support msan provide sanitizers/msan_interface.h.
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* We therefore declare the functions we need ourselves, rather than trying to
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@@ -237,17 +294,6 @@ void __msan_poison(const volatile void *a, size_t size);
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intptr_t __msan_test_shadow(const volatile void *x, size_t size);
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#endif
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/* detects whether we are being compiled under asan */
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#ifndef ZSTD_ADDRESS_SANITIZER
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# if __has_feature(address_sanitizer)
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# define ZSTD_ADDRESS_SANITIZER 1
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# elif defined(__SANITIZE_ADDRESS__)
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# define ZSTD_ADDRESS_SANITIZER 1
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# else
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# define ZSTD_ADDRESS_SANITIZER 0
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# endif
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#endif
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#if ZSTD_ADDRESS_SANITIZER
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/* Not all platforms that support asan provide sanitizers/asan_interface.h.
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* We therefore declare the functions we need ourselves, rather than trying to
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