#include <metal_stdlib>

using namespace metal;
kernel void f(device int* tint_symbol [[buffer(0)]]) {
  int const a = 1;
  int const _a = a;
  int const b = a;
  int const _b = _a;
  *(tint_symbol) = as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(a) + as_type<uint>(_a)))) + as_type<uint>(b)))) + as_type<uint>(_b)));
  return;
}

