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Check for AVX512F support

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This commit is contained in:
Frank Denis 2017-09-13 23:35:20 +02:00
parent 80095105bb
commit 1c0677b09f
3 changed files with 41 additions and 0 deletions
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20
configure.ac
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@ -433,6 +433,25 @@ return _mm256_movemask_ps(_mm256_cmp_ps(x, y, _CMP_NEQ_OQ));
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mavx512f], [CFLAGS="$CFLAGS -mavx512f"])
AC_MSG_CHECKING(for AVX512F instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AVX512F opcodes
#endif
#pragma GCC target("avx512f")
#include <immintrin.h>
]], [[
__m512i x = _mm512_setzero_epi32();
__m512i y = _mm512_permutexvar_epi64(_mm512_setr_epi64(0, 1, 4, 5, 2, 3, 6, 7), x);
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AVX512FINTRIN_H], [1], [AVX512F is available])
AX_CHECK_COMPILE_FLAG([-mavx512f], [CFLAGS_AVX512F="-mavx512f"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-maes], [CFLAGS="$CFLAGS -maes"])
AX_CHECK_COMPILE_FLAG([-mpclmul], [CFLAGS="$CFLAGS -mpclmul"])
@ -463,6 +482,7 @@ AC_SUBST(CFLAGS_SSSE3)
AC_SUBST(CFLAGS_SSE41)
AC_SUBST(CFLAGS_AVX)
AC_SUBST(CFLAGS_AVX2)
AC_SUBST(CFLAGS_AVX512F)
AC_SUBST(CFLAGS_AESNI)
AC_SUBST(CFLAGS_PCLMUL)

3
src/libsodium/include/sodium/runtime.h
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@ -29,6 +29,9 @@ int sodium_runtime_has_avx(void);
SODIUM_EXPORT __attribute__((weak))
int sodium_runtime_has_avx2(void);
SODIUM_EXPORT __attribute__((weak))
int sodium_runtime_has_avx512f(void);
SODIUM_EXPORT __attribute__((weak))
int sodium_runtime_has_pclmul(void);

18
src/libsodium/sodium/runtime.c
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@ -16,6 +16,7 @@ typedef struct CPUFeatures_ {
int has_sse41;
int has_avx;
int has_avx2;
int has_avx512f;
int has_pclmul;
int has_aesni;
} CPUFeatures;
@ -23,6 +24,7 @@ typedef struct CPUFeatures_ {
static CPUFeatures _cpu_features;
#define CPUID_EBX_AVX2 0x00000020
#define CPUID_EBX_AVX512F 0x00010000
#define CPUID_ECX_SSE3 0x00000001
#define CPUID_ECX_PCLMUL 0x00000002
@ -176,6 +178,16 @@ _sodium_runtime_intel_cpu_features(CPUFeatures * const cpu_features)
}
#endif
cpu_features->has_avx512f = 0;
#ifdef HAVE_AVX512FINTRIN_H
if (cpu_features->has_avx2) {
unsigned int cpu_info7[4];
_cpuid(cpu_info7, 0x00000007);
cpu_features->has_avx512f = ((cpu_info7[1] & CPUID_EBX_AVX512F) != 0x0);
}
#endif
#ifdef HAVE_WMMINTRIN_H
cpu_features->has_pclmul = ((cpu_info[2] & CPUID_ECX_PCLMUL) != 0x0);
cpu_features->has_aesni = ((cpu_info[2] & CPUID_ECX_AESNI) != 0x0);
@ -241,6 +253,12 @@ sodium_runtime_has_avx2(void)
return _cpu_features.has_avx2;
}
int
sodium_runtime_has_avx512f(void)
{
return _cpu_features.has_avx512f;
}
int
sodium_runtime_has_pclmul(void)
{