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