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Fixed avx support detection

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This commit is contained in:
Gres 2022-04-07 22:56:22 +03:00
parent ce9c47c3ea
commit a4a3f44806
1 changed files with 17 additions and 30 deletions
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47
src/settings.cpp
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@ -7,6 +7,8 @@
#include <QSettings> #include <QSettings>
#include <QStandardPaths> #include <QStandardPaths>
#include <array>
namespace namespace
{ {
const QString iniFileName() const QString iniFileName()
@ -133,47 +135,32 @@ void cleanupOutdated(QSettings& settings)
#ifdef _MSC_VER #ifdef _MSC_VER
#include <intrin.h> #include <intrin.h>
#endif void cpuid(int leaf, int subleaf, std::array<uint, 4>& cpuinfo)
#ifdef __GNUC__
void __cpuid(int* cpuinfo, int info)
{ {
__asm__ __volatile__( __cpuidex(reinterpret_cast<int*>(cpuinfo.data()), leaf, subleaf);
"xchg %%ebx, %%edi;"
"cpuid;"
"xchg %%ebx, %%edi;"
: "=a"(cpuinfo[0]), "=D"(cpuinfo[1]), "=c"(cpuinfo[2]), "=d"(cpuinfo[3])
: "0"(info));
} }
#else
unsigned long long _xgetbv(unsigned int index) #include <cpuid.h>
void cpuid(int leaf, int subleaf, std::array<uint, 4>& cpuinfo)
{ {
unsigned int eax, edx; __get_cpuid_count(leaf, subleaf, &cpuinfo[0], &cpuinfo[1], &cpuinfo[2],
__asm__ __volatile__("xgetbv;" : "=a"(eax), "=d"(edx) : "c"(index)); &cpuinfo[3]);
return ((unsigned long long)edx << 32) | eax;
} }
#endif #endif
bool checkOptimizedTesseractSupport() bool checkOptimizedTesseractSupport()
{ {
bool sse4_1Supportted = false; std::array<uint, 4> cpuinfo{0};
bool sse4_2Supportted = false;
bool avxSupportted = false;
int cpuinfo[4]; cpuid(1, 0, cpuinfo);
__cpuid(cpuinfo, 1); const bool sse4_1 = cpuinfo[2] & (1 << 19);
const bool sse4_2 = cpuinfo[2] & (1 << 20);
const bool avx = cpuinfo[2] & (1 << 28);
sse4_1Supportted = cpuinfo[2] & (1 << 19) || false; cpuid(7, 0, cpuinfo);
sse4_2Supportted = cpuinfo[2] & (1 << 20) || false; const bool avx2 = cpuinfo[1] & (1 << 5);
avxSupportted = cpuinfo[2] & (1 << 28) || false; return sse4_1 && sse4_2 && avx && avx2;
bool osxsaveSupported = cpuinfo[2] & (1 << 27) || false;
if (osxsaveSupported && avxSupportted) {
// _XCR_XFEATURE_ENABLED_MASK = 0
unsigned long long xcrFeatureMask = _xgetbv(0);
avxSupportted = (xcrFeatureMask & 0x6) == 0x6;
}
return sse4_1Supportted && sse4_2Supportted && avxSupportted;
} }
} // namespace } // namespace