; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 1
; Bound: 40
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %compute_main "compute_main" %compute_main_local_invocation_index_Input
               OpExecutionMode %compute_main LocalSize 1 1 1
               OpName %arg_0 "arg_0"
               OpName %compute_main_local_invocation_index_Input "compute_main_local_invocation_index_Input"
               OpName %atomicCompareExchangeWeak_83580d "atomicCompareExchangeWeak_83580d"
               OpName %arg_1 "arg_1"
               OpName %arg_2 "arg_2"
               OpMemberName %__atomic_compare_exchange_result_u32 0 "old_value"
               OpMemberName %__atomic_compare_exchange_result_u32 1 "exchanged"
               OpName %__atomic_compare_exchange_result_u32 "__atomic_compare_exchange_result_u32"
               OpName %res "res"
               OpName %compute_main_inner "compute_main_inner"
               OpName %tint_local_index "tint_local_index"
               OpName %compute_main "compute_main"
               OpDecorate %compute_main_local_invocation_index_Input BuiltIn LocalInvocationIndex
               OpMemberDecorate %__atomic_compare_exchange_result_u32 0 Offset 0
               OpMemberDecorate %__atomic_compare_exchange_result_u32 1 Offset 4
       %uint = OpTypeInt 32 0
%_ptr_Workgroup_uint = OpTypePointer Workgroup %uint
      %arg_0 = OpVariable %_ptr_Workgroup_uint Workgroup
%_ptr_Input_uint = OpTypePointer Input %uint
%compute_main_local_invocation_index_Input = OpVariable %_ptr_Input_uint Input
       %void = OpTypeVoid
          %8 = OpTypeFunction %void
%_ptr_Function_uint = OpTypePointer Function %uint
     %uint_1 = OpConstant %uint 1
     %uint_2 = OpConstant %uint 2
     %uint_0 = OpConstant %uint 0
       %bool = OpTypeBool
%__atomic_compare_exchange_result_u32 = OpTypeStruct %uint %bool
%_ptr_Function___atomic_compare_exchange_result_u32 = OpTypePointer Function %__atomic_compare_exchange_result_u32
         %27 = OpTypeFunction %void %uint
   %uint_264 = OpConstant %uint 264
%atomicCompareExchangeWeak_83580d = OpFunction %void None %8
          %9 = OpLabel
      %arg_1 = OpVariable %_ptr_Function_uint Function
      %arg_2 = OpVariable %_ptr_Function_uint Function
        %res = OpVariable %_ptr_Function___atomic_compare_exchange_result_u32 Function
               OpStore %arg_1 %uint_1
               OpStore %arg_2 %uint_1
         %14 = OpLoad %uint %arg_1 None
         %15 = OpLoad %uint %arg_2 None
         %16 = OpAtomicCompareExchange %uint %arg_0 %uint_2 %uint_0 %uint_0 %15 %14
         %19 = OpIEqual %bool %16 %14
         %22 = OpCompositeConstruct %__atomic_compare_exchange_result_u32 %16 %19
               OpStore %res %22
               OpReturn
               OpFunctionEnd
%compute_main_inner = OpFunction %void None %27
%tint_local_index = OpFunctionParameter %uint
         %28 = OpLabel
         %29 = OpIEqual %bool %tint_local_index %uint_0
               OpSelectionMerge %30 None
               OpBranchConditional %29 %31 %30
         %31 = OpLabel
               OpAtomicStore %arg_0 %uint_2 %uint_0 %uint_0
               OpBranch %30
         %30 = OpLabel
               OpControlBarrier %uint_2 %uint_2 %uint_264
         %35 = OpFunctionCall %void %atomicCompareExchangeWeak_83580d
               OpReturn
               OpFunctionEnd
%compute_main = OpFunction %void None %8
         %37 = OpLabel
         %38 = OpLoad %uint %compute_main_local_invocation_index_Input None
         %39 = OpFunctionCall %void %compute_main_inner %38
               OpReturn
               OpFunctionEnd