7 instructions

store_src_rg                   coords = src.rg
init_lane_masks                CondMask = LoopMask = RetMask = true
copy_uniform                   $0 = colorGreen(0)
cast_to_int_from_float         $0 = FloatToInt($0)
cast_to_float_from_int         $0 = IntToFloat($0)
copy_3_uniforms                $1..3 = colorGreen(1..3)
load_src                       src.rgba = $0..3