35 lines
827 B
C++
35 lines
827 B
C++
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#include "simd.h"
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namespace Assimp {
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bool CPUSupportsSSE2() {
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#if defined(__x86_64__) || defined(_M_X64)
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//* x86_64 always has SSE2 instructions */
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return true;
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#elif defined(__GNUC__) && defined(i386)
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// for GCC x86 we check cpuid
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unsigned int d;
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__asm__(
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"pushl %%ebx\n\t"
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"cpuid\n\t"
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"popl %%ebx\n\t"
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: "=d" ( d )
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:"a" ( 1 ) );
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return ( d & 0x04000000 ) != 0;
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#elif (defined(_MSC_VER) && defined(_M_IX86))
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// also check cpuid for MSVC x86
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unsigned int d;
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__asm {
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xor eax, eax
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inc eax
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push ebx
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cpuid
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pop ebx
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mov d, edx
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}
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return ( d & 0x04000000 ) != 0;
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#else
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return false;
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#endif
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}
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}
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