groupshared int a;
groupshared int b;
groupshared int c;

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

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

void uses_a_and_b() {
  b = a;
}

void no_uses() {
}

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

struct tint_symbol_1 {
  uint local_invocation_index : SV_GroupIndex;
};

[numthreads(1, 1, 1)]
void main1(tint_symbol_1 tint_symbol) {
  const uint local_invocation_index = tint_symbol.local_invocation_index;
  if ((local_invocation_index == 0u)) {
    a = 0;
  }
  GroupMemoryBarrierWithGroupSync();
  a = 42;
  uses_a();
  return;
}

struct tint_symbol_3 {
  uint local_invocation_index_1 : SV_GroupIndex;
};

[numthreads(1, 1, 1)]
void main2(tint_symbol_3 tint_symbol_2) {
  const uint local_invocation_index_1 = tint_symbol_2.local_invocation_index_1;
  if ((local_invocation_index_1 == 0u)) {
    b = 0;
  }
  GroupMemoryBarrierWithGroupSync();
  b = 7;
  uses_b();
  return;
}

struct tint_symbol_5 {
  uint local_invocation_index_2 : SV_GroupIndex;
};

[numthreads(1, 1, 1)]
void main3(tint_symbol_5 tint_symbol_4) {
  const uint local_invocation_index_2 = tint_symbol_4.local_invocation_index_2;
  if ((local_invocation_index_2 == 0u)) {
    a = 0;
    b = 0;
  }
  GroupMemoryBarrierWithGroupSync();
  outer();
  no_uses();
  return;
}

[numthreads(1, 1, 1)]
void main4() {
  no_uses();
  return;
}