@compute @workgroup_size(1)
fn f() {
  var v = (1.0 + 2.0);
  var v2 : vec2<f32> = vec2<f32>(v);
  var v3 : vec3<f32> = vec3<f32>(v);
  var v4 : vec4<f32> = vec4<f32>(v);
}