OpCapability Shader
                %1 = OpExtInstImport "GLSL.std.450"
                     OpMemoryModel Logical GLSL450
                     OpEntryPoint GLCompute %main "main"
                     OpExecutionMode %main LocalSize 1 1 1
                     OpSource GLSL 450
                     OpName %main "main"
                     OpName %i "i"
                     OpName %S "S"
                     OpMemberName %S 0 "i"
                     OpName %V "V"
                     OpDecorate %gl_WorkGroupSize BuiltIn WorkgroupSize
             %void = OpTypeVoid
                %3 = OpTypeFunction %void
              %int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
                %S = OpTypeStruct %int
  %_ptr_Function_S = OpTypePointer Function %S
            %int_0 = OpConstant %int 0
             %uint = OpTypeInt 32 0
           %v3uint = OpTypeVector %uint 3
           %uint_1 = OpConstant %uint 1
 %gl_WorkGroupSize = OpConstantComposite %v3uint %uint_1 %uint_1 %uint_1
             %main = OpFunction %void None %3
                %5 = OpLabel
                %i = OpVariable %_ptr_Function_int Function
                %V = OpVariable %_ptr_Function_S Function
               %13 = OpAccessChain %_ptr_Function_int %V %int_0
               %14 = OpLoad %int %13
                     OpStore %i %14
                     OpReturn
                     OpFunctionEnd