@group(0) @binding(0) var<storage, read_write> s : i32;

const a : i32 = 1;

const a__ : i32 = 2;

@compute @workgroup_size(1)
fn f() {
  const b = a;
  const b__ = a__;
  s = (b + b__);
}
