enable f16;

@group(0) @binding(0) var<uniform> m : mat3x4<f16>;

var<private> counter = 0;

fn i() -> i32 {
  counter++;
  return counter;
}

@compute @workgroup_size(1)
fn f() {
  let p_m = &(m);
  let p_m_1 = &((*(p_m))[1]);
  let l_m : mat3x4<f16> = *(p_m);
  let l_m_1 : vec4<f16> = *(p_m_1);
}
