               OpCapability Kernel
               OpCapability Addresses
               OpCapability Linkage
               OpMemoryModel Logical OpenCL
               OpName %Aptr "Aptr"
               OpTypeForwardPointer %Aptr Function
       %uint = OpTypeInt 32 0
          %A = OpTypeStruct %Aptr %uint
  %Aptr = OpTypePointer Function %A