var<private> a : i32;

var<private> b : i32;

var<private> c : i32;

fn uses_a() {
  a = (a + 1);
}

fn uses_b() {
  b = (b * 2);
}

fn uses_a_and_b() {
  b = a;
}

fn no_uses() {
}

fn outer() {
  a = 0;
  uses_a();
  uses_a_and_b();
  uses_b();
  no_uses();
}

@compute @workgroup_size(1)
fn main1() {
  a = 42;
  uses_a();
}

@compute @workgroup_size(1)
fn main2() {
  b = 7;
  uses_b();
}

@compute @workgroup_size(1)
fn main3() {
  outer();
  no_uses();
}

@compute @workgroup_size(1)
fn main4() {
  no_uses();
}