#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wmissing-braces"

#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

template<typename T, size_t Num>
struct spvUnsafeArray
{
    T elements[Num ? Num : 1];
    
    thread T& operator [] (size_t pos) thread
    {
        return elements[pos];
    }
    constexpr const thread T& operator [] (size_t pos) const thread
    {
        return elements[pos];
    }
    
    device T& operator [] (size_t pos) device
    {
        return elements[pos];
    }
    constexpr const device T& operator [] (size_t pos) const device
    {
        return elements[pos];
    }
    
    constexpr const constant T& operator [] (size_t pos) const constant
    {
        return elements[pos];
    }
    
    threadgroup T& operator [] (size_t pos) threadgroup
    {
        return elements[pos];
    }
    constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
    {
        return elements[pos];
    }
};

struct SSBO
{
    int values[1];
};

constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(4u, 4u, 1u);

constant spvUnsafeArray<int, 4> indexable = spvUnsafeArray<int, 4>({ 0, 1, 2, 3 });
constant spvUnsafeArray<int, 4> indexable_1 = spvUnsafeArray<int, 4>({ 4, 5, 6, 7 });

kernel void main0(device SSBO& _6 [[buffer(0)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]], uint3 gl_LocalInvocationID [[thread_position_in_threadgroup]])
{
    _6.values[gl_GlobalInvocationID.x] = indexable[gl_LocalInvocationID.x] + indexable_1[gl_LocalInvocationID.y];
}