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//------------------------------------------------------------------------------
// GB_cpu_features.h: cpu features for GraphBLAS
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// The following can be optionally #define'd at compile-time:
//
// GBX86: 1 if the target architecture is x86_64,
// 0 if the target architecture is not x86_64.
// default: #define'd below.
//
// GBAVX2: 1 if the target architecture is x86_64 and supports AVX2,
// 0 otherwise.
// default: left undefined and cpu_features/GetX86Info is used
// to determine this feature at run-time.
//
// GBAVX512F: 1 if the target architecture is x86_64 and supports AVX512F
// 0 otherwise.
// default: left undefined and cpu_features/GetX86Info is used
// to determine this feature at run-time.
//
// GBNCPUFEAT: if #define'd then the Google cpu_features package is not used.
// The run-time tests for AVX2 and AVX512F are replaced with
// compile-time tests, using GBAVX2, and GBAVX512F. If GBAVX2 or
// GBAVX512F macros are not #define'd externally by the build system,
// then no AVX acceleration is used. default: not #define'd (using
// Google's cpu_features).
#ifndef GB_CPU_FEATURES_H
#define GB_CPU_FEATURES_H
//------------------------------------------------------------------------------
// GB_compiler.h: determine the compiler and architecture
//------------------------------------------------------------------------------
#include "GB_compiler.h"
//------------------------------------------------------------------------------
// determine the target architecture
//------------------------------------------------------------------------------
#if !defined ( GBX86 )
#if ( defined (_M_X64) || defined (__x86_64__)) && \
! ( defined (__CLR_VER) || defined (__pnacl__) )
// the target architecture is x86_64, and not a virtual machine
#define GBX86 1
#else
#define GBX86 0
#endif
#endif
//------------------------------------------------------------------------------
// rely on Google's cpu_features package for run-time tests
//------------------------------------------------------------------------------
#if GB_COMPILER_MSC || GB_COMPILER_NVCC || GB_MINGW
// entirely disable cpu_features for MS Visual Studio, nvcc, and MinGW
#undef GBNCPUFEAT
#define GBNCPUFEAT 1
#endif
#if !defined ( GBNCPUFEAT )
#include "cpu_features_macros.h"
#define STACK_LINE_READER_BUFFER_SIZE 1024
#if GBX86
// Intel x86 (also AMD): other architectures are not exploited
#include "cpuinfo_x86.h"
#endif
#endif
#endif
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