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Diffstat (limited to 'third_party/highway/hwy/detect_compiler_arch.h')
| -rw-r--r-- | third_party/highway/hwy/detect_compiler_arch.h | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/third_party/highway/hwy/detect_compiler_arch.h b/third_party/highway/hwy/detect_compiler_arch.h new file mode 100644 index 0000000000..466e30b308 --- /dev/null +++ b/third_party/highway/hwy/detect_compiler_arch.h @@ -0,0 +1,235 @@ +// Copyright 2020 Google LLC +// SPDX-License-Identifier: Apache-2.0 +// +// 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. + +#ifndef HIGHWAY_HWY_DETECT_COMPILER_ARCH_H_ +#define HIGHWAY_HWY_DETECT_COMPILER_ARCH_H_ + +// Detects compiler and arch from predefined macros. Zero dependencies for +// inclusion by foreach_target.h. + +// Add to #if conditions to prevent IDE from graying out code. +#if (defined __CDT_PARSER__) || (defined __INTELLISENSE__) || \ + (defined Q_CREATOR_RUN) || (defined __CLANGD__) || \ + (defined GROK_ELLIPSIS_BUILD) +#define HWY_IDE 1 +#else +#define HWY_IDE 0 +#endif + +//------------------------------------------------------------------------------ +// Compiler + +// Actual MSVC, not clang-cl, which defines _MSC_VER but doesn't behave like +// MSVC in other aspects (e.g. HWY_DIAGNOSTICS). +#if defined(_MSC_VER) && !defined(__clang__) +#define HWY_COMPILER_MSVC _MSC_VER +#else +#define HWY_COMPILER_MSVC 0 +#endif + +#if defined(_MSC_VER) && defined(__clang__) +#define HWY_COMPILER_CLANGCL _MSC_VER +#else +#define HWY_COMPILER_CLANGCL 0 +#endif + +#ifdef __INTEL_COMPILER +#define HWY_COMPILER_ICC __INTEL_COMPILER +#else +#define HWY_COMPILER_ICC 0 +#endif + +#ifdef __INTEL_LLVM_COMPILER +#define HWY_COMPILER_ICX __INTEL_LLVM_COMPILER +#else +#define HWY_COMPILER_ICX 0 +#endif + +// HWY_COMPILER_GCC is a generic macro for all compilers implementing the GNU +// compiler extensions (eg. Clang, Intel...) +#ifdef __GNUC__ +#define HWY_COMPILER_GCC (__GNUC__ * 100 + __GNUC_MINOR__) +#else +#define HWY_COMPILER_GCC 0 +#endif + +// Clang or clang-cl, not GCC. +#ifdef __clang__ +// In case of Apple LLVM (whose version number is unrelated to that of LLVM) or +// an invalid version number, deduce it from the presence of warnings. +// Adapted from https://github.com/simd-everywhere/simde/ simde-detect-clang.h. +#if defined(__apple_build_version__) || __clang_major__ >= 999 +#if __has_warning("-Wbitwise-instead-of-logical") +#define HWY_COMPILER_CLANG 1400 +#elif __has_warning("-Wreserved-identifier") +#define HWY_COMPILER_CLANG 1300 +#elif __has_warning("-Wformat-insufficient-args") +#define HWY_COMPILER_CLANG 1200 +#elif __has_warning("-Wimplicit-const-int-float-conversion") +#define HWY_COMPILER_CLANG 1100 +#elif __has_warning("-Wmisleading-indentation") +#define HWY_COMPILER_CLANG 1000 +#elif defined(__FILE_NAME__) +#define HWY_COMPILER_CLANG 900 +#elif __has_warning("-Wextra-semi-stmt") || \ + __has_builtin(__builtin_rotateleft32) +#define HWY_COMPILER_CLANG 800 +// For reasons unknown, XCode 10.3 (Apple LLVM version 10.0.1) is apparently +// based on Clang 7, but does not support the warning we test. +// See https://en.wikipedia.org/wiki/Xcode#Toolchain_versions and +// https://trac.macports.org/wiki/XcodeVersionInfo. +#elif __has_warning("-Wc++98-compat-extra-semi") || \ + (defined(__apple_build_version__) && __apple_build_version__ >= 10010000) +#define HWY_COMPILER_CLANG 700 +#else // Anything older than 7.0 is not recommended for Highway. +#define HWY_COMPILER_CLANG 600 +#endif // __has_warning chain +#else // use normal version +#define HWY_COMPILER_CLANG (__clang_major__ * 100 + __clang_minor__) +#endif +#else // Not clang +#define HWY_COMPILER_CLANG 0 +#endif + +#if HWY_COMPILER_GCC && !HWY_COMPILER_CLANG +#define HWY_COMPILER_GCC_ACTUAL HWY_COMPILER_GCC +#else +#define HWY_COMPILER_GCC_ACTUAL 0 +#endif + +// More than one may be nonzero, but we want at least one. +#if 0 == (HWY_COMPILER_MSVC + HWY_COMPILER_CLANGCL + HWY_COMPILER_ICC + \ + HWY_COMPILER_GCC + HWY_COMPILER_CLANG) +#error "Unsupported compiler" +#endif + +// We should only detect one of these (only clang/clangcl overlap) +#if 1 < \ + (!!HWY_COMPILER_MSVC + !!HWY_COMPILER_ICC + !!HWY_COMPILER_GCC_ACTUAL + \ + !!(HWY_COMPILER_CLANGCL | HWY_COMPILER_CLANG)) +#error "Detected multiple compilers" +#endif + +#ifdef __has_builtin +#define HWY_HAS_BUILTIN(name) __has_builtin(name) +#else +#define HWY_HAS_BUILTIN(name) 0 +#endif + +#ifdef __has_attribute +#define HWY_HAS_ATTRIBUTE(name) __has_attribute(name) +#else +#define HWY_HAS_ATTRIBUTE(name) 0 +#endif + +#ifdef __has_feature +#define HWY_HAS_FEATURE(name) __has_feature(name) +#else +#define HWY_HAS_FEATURE(name) 0 +#endif + +//------------------------------------------------------------------------------ +// Architecture + +#if defined(__i386__) || defined(_M_IX86) +#define HWY_ARCH_X86_32 1 +#else +#define HWY_ARCH_X86_32 0 +#endif + +#if defined(__x86_64__) || defined(_M_X64) +#define HWY_ARCH_X86_64 1 +#else +#define HWY_ARCH_X86_64 0 +#endif + +#if HWY_ARCH_X86_32 && HWY_ARCH_X86_64 +#error "Cannot have both x86-32 and x86-64" +#endif + +#if HWY_ARCH_X86_32 || HWY_ARCH_X86_64 +#define HWY_ARCH_X86 1 +#else +#define HWY_ARCH_X86 0 +#endif + +#if defined(__powerpc64__) || defined(_M_PPC) +#define HWY_ARCH_PPC 1 +#else +#define HWY_ARCH_PPC 0 +#endif + +#if defined(__ARM_ARCH_ISA_A64) || defined(__aarch64__) || defined(_M_ARM64) +#define HWY_ARCH_ARM_A64 1 +#else +#define HWY_ARCH_ARM_A64 0 +#endif + +#if (defined(__ARM_ARCH) && __ARM_ARCH == 7) || (defined(_M_ARM) && _M_ARM == 7) +#define HWY_ARCH_ARM_V7 1 +#else +#define HWY_ARCH_ARM_V7 0 +#endif + +#if HWY_ARCH_ARM_A64 && HWY_ARCH_ARM_V7 +#error "Cannot have both A64 and V7" +#endif + +// Any *supported* version of Arm, i.e. 7 or later +#if HWY_ARCH_ARM_A64 || HWY_ARCH_ARM_V7 +#define HWY_ARCH_ARM 1 +#else +#define HWY_ARCH_ARM 0 +#endif + +// Older than v7 (e.g. armel aka Arm v5), in which case we do not support SIMD. +#if (defined(__arm__) || defined(_M_ARM)) && !HWY_ARCH_ARM +#define HWY_ARCH_ARM_OLD 1 +#else +#define HWY_ARCH_ARM_OLD 0 +#endif + +#if defined(__EMSCRIPTEN__) || defined(__wasm__) || defined(__WASM__) +#define HWY_ARCH_WASM 1 +#else +#define HWY_ARCH_WASM 0 +#endif + +#ifdef __riscv +#define HWY_ARCH_RVV 1 +#else +#define HWY_ARCH_RVV 0 +#endif + +// It is an error to detect multiple architectures at the same time, but OK to +// detect none of the above. +#if (HWY_ARCH_X86 + HWY_ARCH_PPC + HWY_ARCH_ARM + HWY_ARCH_ARM_OLD + \ + HWY_ARCH_WASM + HWY_ARCH_RVV) > 1 +#error "Must not detect more than one architecture" +#endif + +#if defined(_WIN32) || defined(_WIN64) +#define HWY_OS_WIN 1 +#else +#define HWY_OS_WIN 0 +#endif + +#if defined(linux) || defined(__linux__) +#define HWY_OS_LINUX 1 +#else +#define HWY_OS_LINUX 0 +#endif + +#endif // HIGHWAY_HWY_DETECT_COMPILER_ARCH_H_ |