SKIP: FAILED

<dawn>/src/tint/lang/msl/writer/printer/printer.cc:355 internal compiler error: __atomic_compare_exchange_result_i32 = struct @align(4) {
  old_value:i32 @offset(0)
  exchanged:bool @offset(4)
}

%b1 = block {  # root
  %a:ptr<storage, atomic<i32>, read_write> = var @binding_point(0, 0)
}

%foo = @fragment func():i32 [@location(0)] -> %b2 {
  %b2 = block {
    discard
    %x:ptr<function, i32, read_write> = var, 0i
    %result:__atomic_compare_exchange_result_i32 = atomicCompareExchangeWeak %a, 0i, 1i
    %5:bool = access %result, 1u
    if %5 [t: %b3] {  # if_1
      %b3 = block {  # true
        %6:i32 = access %result, 0u
        store %x, %6
        exit_if  # if_1
      }
    }
    %7:i32 = load %x
    ret %7
  }
}

unhandled variable address space
********************************************************************
*  The tint shader compiler has encountered an unexpected error.   *
*                                                                  *
*  Please help us fix this issue by submitting a bug report at     *
*  crbug.com/tint with the source program that triggered the bug.  *
********************************************************************