uniform half4 colorGreen;

half4 main(float2 coords) {
    // We should see only one `OpConstantComposite %v2float %float_3 %float_3` in the output.
    float2 a = max(coords, 3.0);
    float2 b = min(coords, 3.0);
    a = b;
    return colorGreen;
}