; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 35
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %compute_main "compute_main" %tint_symbol
               OpExecutionMode %compute_main LocalSize 1 1 1
               OpName %arg_0 "arg_0"
               OpName %tint_symbol "tint_symbol"
               OpName %atomicCompareExchangeWeak_b2ab2c "atomicCompareExchangeWeak_b2ab2c"
               OpName %res "res"
               OpName %compute_main "compute_main"
               OpDecorate %tint_symbol BuiltIn LocalInvocationIndex
       %uint = OpTypeInt 32 0
%_ptr_Workgroup_uint = OpTypePointer Workgroup %uint
      %arg_0 = OpVariable %_ptr_Workgroup_uint Workgroup
%_ptr_Input_uint = OpTypePointer Input %uint
%tint_symbol = OpVariable %_ptr_Input_uint Input
       %void = OpTypeVoid
          %6 = OpTypeFunction %void
     %v2uint = OpTypeVector %uint 2
     %uint_2 = OpConstant %uint 2
     %uint_0 = OpConstant %uint 0
     %uint_1 = OpConstant %uint 1
       %bool = OpTypeBool
%_ptr_Function_v2uint = OpTypePointer Function %v2uint
         %22 = OpConstantNull %v2uint
         %31 = OpConstantNull %uint
   %uint_264 = OpConstant %uint 264
%atomicCompareExchangeWeak_b2ab2c = OpFunction %void None %6
          %9 = OpLabel
        %res = OpVariable %_ptr_Function_v2uint Function %22
         %17 = OpAtomicCompareExchange %uint %arg_0 %uint_2 %uint_0 %uint_0 %uint_1 %uint_1
         %18 = OpIEqual %bool %17 %uint_1
         %19 = OpSelect %uint %18 %uint_1 %uint_0
         %10 = OpCompositeConstruct %v2uint %17 %19
               OpStore %res %10
               OpReturn
               OpFunctionEnd
%compute_main = OpFunction %void None %6
         %24 = OpLabel
         %25 = OpLoad %uint %tint_symbol
         %26 = OpIEqual %bool %25 %uint_0
               OpSelectionMerge %27 None
               OpBranchConditional %26 %28 %27
         %28 = OpLabel
               OpAtomicStore %arg_0 %uint_2 %uint_0 %31
               OpBranch %27
         %27 = OpLabel
               OpControlBarrier %uint_2 %uint_2 %uint_264
         %34 = OpFunctionCall %void %atomicCompareExchangeWeak_b2ab2c
               OpReturn
               OpFunctionEnd