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

using namespace metal;

struct A
{
    int a;
    int b;
};

struct A_1
{
    A Data[1];
};

struct A_2
{
    int a;
    int b;
};

struct A_3
{
    /* FIXME: A padded struct is needed here. If you see this message, file a bug! */ A_2 Data[1024];
};

struct B
{
    A Data[1];
};

struct B_1
{
    /* FIXME: A padded struct is needed here. If you see this message, file a bug! */ A_2 Data[1024];
};

kernel void main0(device B& C3 [[buffer(0)]], device A_1& C1 [[buffer(1)]], constant A_3& C2 [[buffer(2)]], constant B_1& C4 [[buffer(3)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
    C1.Data[gl_GlobalInvocationID.x].a = C2.Data[gl_GlobalInvocationID.x].a;
    C1.Data[gl_GlobalInvocationID.x].b = C2.Data[gl_GlobalInvocationID.x].b;
    C3.Data[gl_GlobalInvocationID.x].a = C4.Data[gl_GlobalInvocationID.x].a;
    C3.Data[gl_GlobalInvocationID.x].b = C4.Data[gl_GlobalInvocationID.x].b;
}