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Changes to support Intel AVX/AVX2 in cvResize().

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This commit is contained in:
Richard Yoo
2014-06-06 13:37:13 -07:00
parent 9a5e9d3442
commit 11a09ef5cc
7 changed files with 1005 additions and 320 deletions
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35
modules/core/src/system.cpp
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@@ -253,6 +253,41 @@ struct HWFeatures
f.have[CV_CPU_AVX] = (((cpuid_data[2] & (1<<28)) != 0)&&((cpuid_data[2] & (1<<27)) != 0));//OS uses XSAVE_XRSTORE and CPU support AVX
}
#if CV_AVX2
#if defined _MSC_VER && (defined _M_IX86 || defined _M_X64)
__cpuidex(cpuid_data, 7, 0);
#elif defined __GNUC__ && (defined __i386__ || defined __x86_64__)
#ifdef __x86_64__
asm __volatile__
(
"movl $7, %%eax\n\t"
"movl $0, %%ecx\n\t"
"cpuid\n\t"
:[eax]"=a"(cpuid_data[0]),[ebx]"=b"(cpuid_data[1]),[ecx]"=c"(cpuid_data[2]),[edx]"=d"(cpuid_data[3])
:
: "cc"
);
#else
asm volatile
(
"pushl %%ebx\n\t"
"movl $7,%%eax\n\t"
"movl $0,%%ecx\n\t"
"cpuid\n\t"
"popl %%ebx\n\t"
: "=a"(cpuid_data[0]), "=b"(cpuid_data[1]), "=c"(cpuid_data[2]), "=d"(cpuid_data[3])
:
: "cc"
);
#endif
#endif
if( f.x86_family >= 6 )
{
f.have[CV_CPU_AVX2] = (cpuid_data[1] & (1<<5)) != 0;
}
#endif
return f;
}