test/tint/vk-gl-cts/spirv_assembly/instruction/graphics/execution_mode/depthunchanged_0/1.spvasm

               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %main "main" %outColor %gl_FragDepth %gl_FragCoord
               OpExecutionMode %main OriginUpperLeft
               OpExecutionMode %main DepthReplacing
               OpExecutionMode %main DepthUnchanged
               OpSource GLSL 430
               OpName %main "main"
               OpName %outColor "outColor"
               OpName %gl_FragDepth "gl_FragDepth"
               OpName %gl_FragCoord "gl_FragCoord"
               OpDecorate %outColor Location 0
               OpDecorate %gl_FragDepth BuiltIn FragDepth
               OpDecorate %gl_FragCoord BuiltIn FragCoord
       %void = OpTypeVoid
          %7 = OpTypeFunction %void
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
   %outColor = OpVariable %_ptr_Output_v4float Output
    %float_0 = OpConstant %float 0
         %12 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%_ptr_Output_float = OpTypePointer Output %float
%gl_FragDepth = OpVariable %_ptr_Output_float Output
%_ptr_Input_v4float = OpTypePointer Input %v4float
%gl_FragCoord = OpVariable %_ptr_Input_v4float Input
       %uint = OpTypeInt 32 0
     %uint_2 = OpConstant %uint 2
%_ptr_Input_float = OpTypePointer Input %float
       %main = OpFunction %void None %7
         %18 = OpLabel
               OpStore %outColor %12
         %19 = OpAccessChain %_ptr_Input_float %gl_FragCoord %uint_2
         %20 = OpLoad %float %19
               OpStore %gl_FragDepth %20
               OpReturn
               OpFunctionEnd