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Detect AVX512 on Darwin

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See bc2846e78f
This commit is contained in:
Carles Fernandez 2021-05-21 22:47:33 +02:00
parent 08aea9aa5b
commit dcb5daf9a8
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 20 additions and 14 deletions
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34
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cpu_features/src/cpuinfo_x86.c
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@ -202,11 +202,13 @@ static bool HasYmmOsXSave(uint32_t xcr0_eax)
// Checks that operating system saves and restores zmm registers during context
// switches.
#if !defined(CPU_FEATURES_OS_DARWIN)
static bool HasZmmOsXSave(uint32_t xcr0_eax)
{
return HasMask(xcr0_eax, MASK_XMM | MASK_YMM | MASK_MASKREG | MASK_ZMM0_15 |
MASK_ZMM16_31);
}
#endif
// Checks that operating system saves and restores AMX/TMUL state during context
// switches.
@ -1185,6 +1187,20 @@ static void ParseLeaf4(const int max_cpuid_leaf, CacheInfo* info)
}
}
#if defined(CPU_FEATURES_OS_DARWIN)
#if defined(CPU_FEATURES_MOCK_CPUID_X86)
extern bool GetDarwinSysCtlByName(const char*);
#else // CPU_FEATURES_MOCK_CPUID_X86
static bool GetDarwinSysCtlByName(const char* name)
{
int enabled;
size_t enabled_len = sizeof(enabled);
const int failure = sysctlbyname(name, &enabled, &enabled_len, NULL, 0);
return failure ? false : enabled;
}
#endif
#endif // CPU_FEATURES_OS_DARWIN
// Internal structure to hold the OS support for vector operations.
// Avoid to recompute them since each call to cpuid is ~100 cycles.
typedef struct
@ -1213,7 +1229,11 @@ static OsSupport CheckOsSupport(const uint32_t max_cpuid_leaf)
const uint32_t xcr0_eax = GetXCR0Eax();
os_support.have_sse_via_cpuid = HasXmmOsXSave(xcr0_eax);
os_support.have_avx = HasYmmOsXSave(xcr0_eax);
#if defined(CPU_FEATURES_OS_DARWIN)
os_support.have_avx512 = GetDarwinSysCtlByName("hw.optional.avx512f");
#else
os_support.have_avx512 = HasZmmOsXSave(xcr0_eax);
#endif // CPU_FEATURES_OS_DARWIN
os_support.have_amx = HasTmmOsXSave(xcr0_eax);
}
else
@ -1236,20 +1256,6 @@ static bool GetWindowsIsProcessorFeaturePresent(DWORD ProcessorFeature)
#endif
#endif // CPU_FEATURES_OS_WINDOWS
#if defined(CPU_FEATURES_OS_DARWIN)
#if defined(CPU_FEATURES_MOCK_CPUID_X86)
extern bool GetDarwinSysCtlByName(const char*);
#else // CPU_FEATURES_MOCK_CPUID_X86
static bool GetDarwinSysCtlByName(const char* name)
{
int enabled;
size_t enabled_len = sizeof(enabled);
const int failure = sysctlbyname(name, &enabled, &enabled_len, NULL, 0);
return failure ? false : enabled;
}
#endif
#endif // CPU_FEATURES_OS_DARWIN
static void DetectSseViaOs(X86Features* features)
{
#if defined(CPU_FEATURES_OS_WINDOWS)