; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 43
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %compute_main "compute_main" %local_invocation_index_1
               OpExecutionMode %compute_main LocalSize 1 1 1
               OpName %local_invocation_index_1 "local_invocation_index_1"
               OpName %arg_0 "arg_0"
               OpName %tint_zero_workgroup_memory "tint_zero_workgroup_memory"
               OpName %local_idx "local_idx"
               OpName %atomicCompareExchangeWeak_83580d "atomicCompareExchangeWeak_83580d"
               OpName %__atomic_compare_exchange_result_u32 "__atomic_compare_exchange_result_u32"
               OpMemberName %__atomic_compare_exchange_result_u32 0 "old_value"
               OpMemberName %__atomic_compare_exchange_result_u32 1 "exchanged"
               OpName %res "res"
               OpName %compute_main_inner "compute_main_inner"
               OpName %local_invocation_index "local_invocation_index"
               OpName %compute_main "compute_main"
               OpDecorate %local_invocation_index_1 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_Input_uint = OpTypePointer Input %uint
%local_invocation_index_1 = OpVariable %_ptr_Input_uint Input
%_ptr_Workgroup_uint = OpTypePointer Workgroup %uint
      %arg_0 = OpVariable %_ptr_Workgroup_uint Workgroup
       %void = OpTypeVoid
          %6 = OpTypeFunction %void %uint
     %uint_1 = OpConstant %uint 1
       %bool = OpTypeBool
     %uint_2 = OpConstant %uint 2
     %uint_0 = OpConstant %uint 0
         %20 = OpConstantNull %uint
   %uint_264 = OpConstant %uint 264
         %23 = OpTypeFunction %void
%__atomic_compare_exchange_result_u32 = OpTypeStruct %uint %bool
%_ptr_Function___atomic_compare_exchange_result_u32 = OpTypePointer Function %__atomic_compare_exchange_result_u32
         %33 = OpConstantNull %__atomic_compare_exchange_result_u32
%tint_zero_workgroup_memory = OpFunction %void None %6
  %local_idx = OpFunctionParameter %uint
         %10 = OpLabel
         %12 = OpULessThan %bool %local_idx %uint_1
               OpSelectionMerge %14 None
               OpBranchConditional %12 %15 %14
         %15 = OpLabel
               OpAtomicStore %arg_0 %uint_2 %uint_0 %20
               OpBranch %14
         %14 = OpLabel
               OpControlBarrier %uint_2 %uint_2 %uint_264
               OpReturn
               OpFunctionEnd
%atomicCompareExchangeWeak_83580d = OpFunction %void None %23
         %25 = OpLabel
        %res = OpVariable %_ptr_Function___atomic_compare_exchange_result_u32 Function %33
         %29 = OpAtomicCompareExchange %uint %arg_0 %uint_2 %uint_0 %uint_0 %uint_1 %uint_1
         %30 = OpIEqual %bool %29 %uint_1
         %26 = OpCompositeConstruct %__atomic_compare_exchange_result_u32 %29 %30
               OpStore %res %26
               OpReturn
               OpFunctionEnd
%compute_main_inner = OpFunction %void None %6
%local_invocation_index = OpFunctionParameter %uint
         %36 = OpLabel
         %37 = OpFunctionCall %void %tint_zero_workgroup_memory %local_invocation_index
         %38 = OpFunctionCall %void %atomicCompareExchangeWeak_83580d
               OpReturn
               OpFunctionEnd
%compute_main = OpFunction %void None %23
         %40 = OpLabel
         %42 = OpLoad %uint %local_invocation_index_1
         %41 = OpFunctionCall %void %compute_main_inner %42
               OpReturn
               OpFunctionEnd