tests/sksl/shared/golden/UnusedVariables.metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
};
struct Outputs {
    float4 sk_FragColor [[color(0)]];
};
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
    Outputs _outputStruct;
    thread Outputs* _out = &_outputStruct;
    float b = 2.0;
    float d = 3.0;
    b++;
    d++;
    _out->sk_FragColor = float4(b, b, d, d);
    return *_out;
}