Squashed 'src/crc32c/' changes from 224988680f..b5ef9be675

b5ef9be675 Merge #1: Merge changes from upstream 9e7f512430 Merge remote-tracking branch 'origin/master' into bitcoin-fork 1f85030246 Add support for ARM64 darwin (#43) 3bb959c982 Remove unnecessary reinterpret_cast (#42) 2e97ab26b1 Fix (unused) ReadUint64LE for BE machines (#41) 47b40d2209 Bump dependencies. (#40) ba74185625 Move CI to Visual Studio 2019. efa301a7e5 Allow different C/C++ standards when this is used as a subproject. cc6d71465e CMake: Use configure_package_config_file() git-subtree-dir: src/crc32c git-subtree-split: b5ef9be6755a2e61e2988bb238f13d1c0ee1fa0a
2024-11-20 02:25:40 +01:00 · 2020-12-08 17:08:07 +01:00 · 2020-12-08 17:08:07 +01:00 · 90c0f267bd
commit 90c0f267bd
parent 2e1819311a
10 changed files with 87 additions and 60 deletions
--- a/.appveyor.yml
+++ b/.appveyor.yml
@ -8,9 +8,9 @@ environment:
  matrix:
    # AppVeyor currently has no custom job name feature.
    # http://help.appveyor.com/discussions/questions/1623-can-i-provide-a-friendly-name-for-jobs
-    - JOB: Visual Studio 2017
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      CMAKE_GENERATOR: Visual Studio 15 2017
+    - JOB: Visual Studio 2019
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      CMAKE_GENERATOR: Visual Studio 16 2019

 platform:
  - x86
@ -24,10 +24,11 @@ build_script:
  - git submodule update --init --recursive
  - mkdir build
  - cd build
-  - if "%platform%"=="x64" set CMAKE_GENERATOR=%CMAKE_GENERATOR% Win64
+  - if "%platform%"=="x86" (set CMAKE_GENERATOR_PLATFORM="Win32")
+      else (set CMAKE_GENERATOR_PLATFORM="%platform%")
  - cmake --version
-  - cmake .. -G "%CMAKE_GENERATOR%" -DCRC32C_USE_GLOG=0
-      -DCMAKE_CONFIGURATION_TYPES="%CONFIGURATION%"
+  - cmake .. -G "%CMAKE_GENERATOR%" -A "%CMAKE_GENERATOR_PLATFORM%"
+      -DCMAKE_CONFIGURATION_TYPES="%CONFIGURATION%" -DCRC32C_USE_GLOG=0
  - cmake --build . --config "%CONFIGURATION%"
  - cd ..

--- a/2
+++ b/2
@ -7,3 +7,5 @@ Google Inc.

 Fangming Fang <Fangming.Fang@arm.com>
 Vadim Skipin <vadim.skipin@gmail.com>
+Rodrigo Tobar <rtobar@icrar.org>
+Harry Mallon <hjmallon@gmail.com>
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -5,15 +5,21 @@
 cmake_minimum_required(VERSION 3.1)
 project(Crc32c VERSION 1.1.0 LANGUAGES C CXX)

-# This project can use C11, but will gracefully decay down to C89.
-set(CMAKE_C_STANDARD 11)
-set(CMAKE_C_STANDARD_REQUIRED OFF)
-set(CMAKE_C_EXTENSIONS OFF)
+# C standard can be overridden when this is used as a sub-project.
+if(NOT CMAKE_C_STANDARD)
+  # This project can use C11, but will gracefully decay down to C89.
+  set(CMAKE_C_STANDARD 11)
+  set(CMAKE_C_STANDARD_REQUIRED OFF)
+  set(CMAKE_C_EXTENSIONS OFF)
+endif(NOT CMAKE_C_STANDARD)

-# This project requires C++11.
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_EXTENSIONS OFF)
+# C++ standard can be overridden when this is used as a sub-project.
+if(NOT CMAKE_CXX_STANDARD)
+  # This project requires C++11.
+  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  set(CMAKE_CXX_EXTENSIONS OFF)
+endif(NOT CMAKE_CXX_STANDARD)

 # https://github.com/izenecloud/cmake/blob/master/SetCompilerWarningAll.cmake
 if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
@ -269,7 +275,7 @@ target_sources(crc32c
  PRIVATE
    "${PROJECT_BINARY_DIR}/include/crc32c/crc32c_config.h"
    "src/crc32c_arm64.h"
-    "src/crc32c_arm64_linux_check.h"
+    "src/crc32c_arm64_check.h"
    "src/crc32c_internal.h"
    "src/crc32c_portable.cc"
    "src/crc32c_prefetch.h"
@ -405,19 +411,24 @@ if(CRC32C_INSTALL)
  )

  include(CMakePackageConfigHelpers)
+  configure_package_config_file(
+    "${PROJECT_NAME}Config.cmake.in"
+    "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
+    INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+  )
  write_basic_package_version_file(
-      "${PROJECT_BINARY_DIR}/Crc32cConfigVersion.cmake"
-      COMPATIBILITY SameMajorVersion
+    "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
+    COMPATIBILITY SameMajorVersion
  )
  install(
    EXPORT Crc32cTargets
    NAMESPACE Crc32c::
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/Crc32c"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
  )
  install(
    FILES
-      "Crc32cConfig.cmake"
-      "${PROJECT_BINARY_DIR}/Crc32cConfigVersion.cmake"
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/Crc32c"
+      "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
+      "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
  )
 endif(CRC32C_INSTALL)
--- a/Crc32cConfig.cmake.in
+++ b/Crc32cConfig.cmake.in
@ -2,4 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file. See the AUTHORS file for names of contributors.

+@PACKAGE_INIT@
+
 include("${CMAKE_CURRENT_LIST_DIR}/Crc32cTargets.cmake")
+
+check_required_components(Crc32c)
--- a/src/crc32c.cc
+++ b/src/crc32c.cc
@ -8,7 +8,7 @@
 #include <cstdint>

 #include "./crc32c_arm64.h"
-#include "./crc32c_arm64_linux_check.h"
+#include "./crc32c_arm64_check.h"
 #include "./crc32c_internal.h"
 #include "./crc32c_sse42.h"
 #include "./crc32c_sse42_check.h"
@ -20,8 +20,8 @@ uint32_t Extend(uint32_t crc, const uint8_t* data, size_t count) {
  static bool can_use_sse42 = CanUseSse42();
  if (can_use_sse42) return ExtendSse42(crc, data, count);
 #elif HAVE_ARM64_CRC32C
-  static bool can_use_arm_linux = CanUseArm64Linux();
-  if (can_use_arm_linux) return ExtendArm64(crc, data, count);
+  static bool can_use_arm64_crc32 = CanUseArm64Crc32();
+  if (can_use_arm64_crc32) return ExtendArm64(crc, data, count);
 #endif  // HAVE_SSE42 && (defined(_M_X64) || defined(__x86_64__))

  return ExtendPortable(crc, data, count);
--- a/src/crc32c_arm64.cc
+++ b/src/crc32c_arm64.cc
@ -64,7 +64,7 @@

 namespace crc32c {

-uint32_t ExtendArm64(uint32_t crc, const uint8_t *buf, size_t size) {
+uint32_t ExtendArm64(uint32_t crc, const uint8_t *data, size_t size) {
  int64_t length = size;
  uint32_t crc0, crc1, crc2, crc3;
  uint64_t t0, t1, t2;
@ -74,7 +74,6 @@ uint32_t ExtendArm64(uint32_t crc, const uint8_t *buf, size_t size) {
  const poly64_t k0 = 0x8d96551c, k1 = 0xbd6f81f8, k2 = 0xdcb17aa4;

  crc = crc ^ kCRC32Xor;
-  const uint8_t *p = reinterpret_cast<const uint8_t *>(buf);

  while (length >= KBYTES) {
    crc0 = crc;
@ -83,14 +82,14 @@ uint32_t ExtendArm64(uint32_t crc, const uint8_t *buf, size_t size) {
    crc3 = 0;

    // Process 1024 bytes in parallel.
-    CRC32C1024BYTES(p);
+    CRC32C1024BYTES(data);

    // Merge the 4 partial CRC32C values.
    t2 = (uint64_t)vmull_p64(crc2, k2);
    t1 = (uint64_t)vmull_p64(crc1, k1);
    t0 = (uint64_t)vmull_p64(crc0, k0);
-    crc = __crc32cd(crc3, *(uint64_t *)p);
-    p += sizeof(uint64_t);
+    crc = __crc32cd(crc3, *(uint64_t *)data);
+    data += sizeof(uint64_t);
    crc ^= __crc32cd(0, t2);
    crc ^= __crc32cd(0, t1);
    crc ^= __crc32cd(0, t0);
@ -99,23 +98,23 @@ uint32_t ExtendArm64(uint32_t crc, const uint8_t *buf, size_t size) {
  }

  while (length >= 8) {
-    crc = __crc32cd(crc, *(uint64_t *)p);
-    p += 8;
+    crc = __crc32cd(crc, *(uint64_t *)data);
+    data += 8;
    length -= 8;
  }

  if (length & 4) {
-    crc = __crc32cw(crc, *(uint32_t *)p);
-    p += 4;
+    crc = __crc32cw(crc, *(uint32_t *)data);
+    data += 4;
  }

  if (length & 2) {
-    crc = __crc32ch(crc, *(uint16_t *)p);
-    p += 2;
+    crc = __crc32ch(crc, *(uint16_t *)data);
+    data += 2;
  }

  if (length & 1) {
-    crc = __crc32cb(crc, *p);
+    crc = __crc32cb(crc, *data);
  }

  return crc ^ kCRC32Xor;
--- a/src/crc32c_arm64.h
+++ b/src/crc32c_arm64.h
@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.

-// Linux-specific code checking the availability for ARM CRC32C instructions.
+// ARM-specific code

-#ifndef CRC32C_CRC32C_ARM_LINUX_H_
-#define CRC32C_CRC32C_ARM_LINUX_H_
+#ifndef CRC32C_CRC32C_ARM_H_
+#define CRC32C_CRC32C_ARM_H_

 #include <cstddef>
 #include <cstdint>
@ -24,4 +24,4 @@ uint32_t ExtendArm64(uint32_t crc, const uint8_t* data, size_t count);

 #endif  // HAVE_ARM64_CRC32C

-#endif  // CRC32C_CRC32C_ARM_LINUX_H_
+#endif  // CRC32C_CRC32C_ARM_H_
--- a/src/crc32c_arm64_linux_check.h
+++ b/src/crc32c_arm64_linux_check.h
@ -2,12 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.

-// ARM Linux-specific code checking for the availability of CRC32C instructions.
+// ARM-specific code checking for the availability of CRC32C instructions.

-#ifndef CRC32C_CRC32C_ARM_LINUX_CHECK_H_
-#define CRC32C_CRC32C_ARM_LINUX_CHECK_H_
-
-// X86-specific code checking for the availability of SSE4.2 instructions.
+#ifndef CRC32C_CRC32C_ARM_CHECK_H_
+#define CRC32C_CRC32C_ARM_CHECK_H_

 #include <cstddef>
 #include <cstdint>
@ -18,6 +16,7 @@

 #if HAVE_ARM64_CRC32C

+#ifdef __linux__
 #if HAVE_STRONG_GETAUXVAL
 #include <sys/auxv.h>
 #elif HAVE_WEAK_GETAUXVAL
@ -27,17 +26,28 @@ extern "C" unsigned long getauxval(unsigned long type) __attribute__((weak));

 #define AT_HWCAP 16
 #endif  // HAVE_STRONG_GETAUXVAL || HAVE_WEAK_GETAUXVAL
+#endif  // defined (__linux__)
+
+#ifdef __APPLE__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif  // defined (__APPLE__)

 namespace crc32c {

-inline bool CanUseArm64Linux() {
-#if HAVE_STRONG_GETAUXVAL || HAVE_WEAK_GETAUXVAL
+inline bool CanUseArm64Crc32() {
+#if defined (__linux__) && (HAVE_STRONG_GETAUXVAL || HAVE_WEAK_GETAUXVAL)
  // From 'arch/arm64/include/uapi/asm/hwcap.h' in Linux kernel source code.
  constexpr unsigned long kHWCAP_PMULL = 1 << 4;
  constexpr unsigned long kHWCAP_CRC32 = 1 << 7;
  unsigned long hwcap = (&getauxval != nullptr) ? getauxval(AT_HWCAP) : 0;
  return (hwcap & (kHWCAP_PMULL | kHWCAP_CRC32)) ==
         (kHWCAP_PMULL | kHWCAP_CRC32);
+#elif defined(__APPLE__)
+  int val = 0;
+  size_t len = sizeof(val);
+  return sysctlbyname("hw.optional.armv8_crc32", &val, &len, nullptr, 0) == 0
+             && val != 0;
 #else
  return false;
 #endif  // HAVE_STRONG_GETAUXVAL || HAVE_WEAK_GETAUXVAL
@ -47,4 +57,4 @@ inline bool CanUseArm64Linux() {

 #endif  // HAVE_ARM64_CRC32C

-#endif  // CRC32C_CRC32C_ARM_LINUX_CHECK_H_
+#endif  // CRC32C_CRC32C_ARM_CHECK_H_
--- a/src/crc32c_benchmark.cc
+++ b/src/crc32c_benchmark.cc
@ -16,7 +16,7 @@
 #endif  // CRC32C_TESTS_BUILT_WITH_GLOG

 #include "./crc32c_arm64.h"
-#include "./crc32c_arm64_linux_check.h"
+#include "./crc32c_arm64_check.h"
 #include "./crc32c_internal.h"
 #include "./crc32c_sse42.h"
 #include "./crc32c_sse42_check.h"
@ -58,8 +58,8 @@ BENCHMARK_REGISTER_F(CRC32CBenchmark, Portable)

 #if HAVE_ARM64_CRC32C

-BENCHMARK_DEFINE_F(CRC32CBenchmark, ArmLinux)(benchmark::State& state) {
-  if (!crc32c::CanUseArm64Linux()) {
+BENCHMARK_DEFINE_F(CRC32CBenchmark, ArmCRC32C)(benchmark::State& state) {
+  if (!crc32c::CanUseArm64Crc32()) {
    state.SkipWithError("ARM CRC32C instructions not available or not enabled");
    return;
  }
@ -69,7 +69,7 @@ BENCHMARK_DEFINE_F(CRC32CBenchmark, ArmLinux)(benchmark::State& state) {
    crc = crc32c::ExtendArm64(crc, block_buffer_, block_size_);
  state.SetBytesProcessed(state.iterations() * block_size_);
 }
-BENCHMARK_REGISTER_F(CRC32CBenchmark, ArmLinux)
+BENCHMARK_REGISTER_F(CRC32CBenchmark, ArmCRC32C)
    ->RangeMultiplier(16)
    ->Range(256, 16777216);  // Block size.

--- a/src/crc32c_read_le.h
+++ b/src/crc32c_read_le.h
@ -32,14 +32,14 @@ inline uint32_t ReadUint32LE(const uint8_t* buffer) {
 // Reads a little-endian 64-bit integer from a 64-bit-aligned buffer.
 inline uint64_t ReadUint64LE(const uint8_t* buffer) {
 #if BYTE_ORDER_BIG_ENDIAN
-  return ((static_cast<uint32_t>(static_cast<uint8_t>(buffer[0]))) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[1])) << 8) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[2])) << 16) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[3])) << 24) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[4])) << 32) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[5])) << 40) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[6])) << 48) |
-          (static_cast<uint32_t>(static_cast<uint8_t>(buffer[7])) << 56));
+  return ((static_cast<uint64_t>(static_cast<uint8_t>(buffer[0]))) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[1])) << 8) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[2])) << 16) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[3])) << 24) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[4])) << 32) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[5])) << 40) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[6])) << 48) |
+          (static_cast<uint64_t>(static_cast<uint8_t>(buffer[7])) << 56));
 #else   // !BYTE_ORDER_BIG_ENDIAN
  uint64_t result;
  // This should be optimized to a single instruction.