var x_1 : u32; var x_4 : vec4; fn main_1() { let x_2 : u32 = x_1; return; } struct main_out { [[builtin(position)]] x_4_1 : vec4; }; [[stage(vertex)]] fn main([[builtin(instance_index)]] x_1_param : u32) -> main_out { x_1 = x_1_param; main_1(); return main_out(x_4); }