| #include <metal_stdlib> | 
 |  | 
 | using namespace metal; | 
 |  | 
 | template<typename T, size_t N> | 
 | struct tint_array { | 
 |     const constant T& operator[](size_t i) const constant { return elements[i]; } | 
 |     device T& operator[](size_t i) device { return elements[i]; } | 
 |     const device T& operator[](size_t i) const device { return elements[i]; } | 
 |     thread T& operator[](size_t i) thread { return elements[i]; } | 
 |     const thread T& operator[](size_t i) const thread { return elements[i]; } | 
 |     threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } | 
 |     const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } | 
 |     T elements[N]; | 
 | }; | 
 |  | 
 | tint_array<int, 4> tint_workgroupUniformLoad(threadgroup tint_array<int, 4>* const p) { | 
 |   threadgroup_barrier(mem_flags::mem_threadgroup); | 
 |   tint_array<int, 4> const result = *(p); | 
 |   threadgroup_barrier(mem_flags::mem_threadgroup); | 
 |   return result; | 
 | } | 
 |  | 
 | tint_array<int, 4> foo(threadgroup tint_array<int, 4>* const tint_symbol) { | 
 |   return tint_workgroupUniformLoad(tint_symbol); | 
 | } | 
 |  |