cl /arch:SSE3 main.cpp && main.exe

SIMD.cpp

#include <string>
#include <array>
#include <memory>
#include <iostream>

using namespace std;

#include <intrin.h>

string get_cpu_name()
{
    uint32_t data[4] = {0};

    _asm
    {
        cpuid;
        mov data[0], ebx;
        mov data[4], edx;
        mov data[8], ecx;
    }

    return string((const char*)data);
}

void assembler()
{
    cout << "CPU is " << get_cpu_name() << endl;

    float f1[] = { 1.f, 2.f, 3.f, 4.f };
    float f2[] = { 5.f, 4.f, 3.f, 2.f };
    float result[4] = {0.f};

    _asm
    {
        movups xmm1, f1;
        movups xmm2, f2;
        mulps xmm1, xmm2;
        movups result, xmm1;
    }

    for(size_t i = 0; i < 4; i++)
    {
        cout << result[i] << "\t";
    }
    cout << "\n";

    int d, c;

    _asm
    {
        mov eax, 1;
        cpuid;
        mov d, edx;
        mov c, ecx;
    }

    if((d & (1 << 26)) != 0)
        cout << "SSE2 is supported\n";

    if((c & 1 ) != 0)
        cout << "SSE3 is supported\n";

    if((c & (1 << 19)) != 0)
        cout << "SSE4.1 is supported\n";
    
    if((c & (1 << 10)) != 0)
        cout << "SSE4.2 is supported\n";
}

void instrinsics()
{
    auto a = _mm_set_ps(1,2,3,4);
    auto b = _mm_set_ps(5,3,2,1);
    auto c = _mm_add_ps(a,b);

    float f = c.m128_f32[0];
    for(int i = 0; i < 4; ++i){
        cout << c.m128_f32[i] << " ";
    }
    cout << '\n';
}

int main()
{
    assembler();
    instrinsics();

    return 0;
}