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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 <QStandardPaths>
#include <array>
namespace
{
const QString iniFileName()
@ -133,47 +135,32 @@ void cleanupOutdated(QSettings& settings)
#ifdef _MSC_VER
#include <intrin.h>
#endif
#ifdef __GNUC__
void __cpuid(int* cpuinfo, int info)
void cpuid(int leaf, int subleaf, std::array<uint, 4>& cpuinfo)
{
__asm__ __volatile__(
"xchg %%ebx, %%edi;"
"cpuid;"
"xchg %%ebx, %%edi;"
: "=a"(cpuinfo[0]), "=D"(cpuinfo[1]), "=c"(cpuinfo[2]), "=d"(cpuinfo[3])
: "0"(info));
__cpuidex(reinterpret_cast<int*>(cpuinfo.data()), leaf, subleaf);
}
unsigned long long _xgetbv(unsigned int index)
#else
#include <cpuid.h>
void cpuid(int leaf, int subleaf, std::array<uint, 4>& cpuinfo)
{
unsigned int eax, edx;
__asm__ __volatile__("xgetbv;" : "=a"(eax), "=d"(edx) : "c"(index));
return ((unsigned long long)edx << 32) | eax;
__get_cpuid_count(leaf, subleaf, &cpuinfo[0], &cpuinfo[1], &cpuinfo[2],
&cpuinfo[3]);
}
#endif
bool checkOptimizedTesseractSupport()
{
bool sse4_1Supportted = false;
bool sse4_2Supportted = false;
bool avxSupportted = false;
std::array<uint, 4> cpuinfo{0};
int cpuinfo[4];
__cpuid(cpuinfo, 1);
cpuid(1, 0, cpuinfo);
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;
sse4_2Supportted = cpuinfo[2] & (1 << 20) || false;
cpuid(7, 0, cpuinfo);
const bool avx2 = cpuinfo[1] & (1 << 5);
avxSupportted = cpuinfo[2] & (1 << 28) || false;
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;
return sse4_1 && sse4_2 && avx && avx2;
}
} // namespace