; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 18
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %fragment_main "fragment_main"
               OpExecutionMode %fragment_main OriginUpperLeft
               OpName %dpdx_c487fa "dpdx_c487fa"
               OpName %arg_0 "arg_0"
               OpName %res "res"
               OpName %fragment_main "fragment_main"
       %void = OpTypeVoid
          %1 = OpTypeFunction %void
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
    %float_1 = OpConstant %float 1
          %8 = OpConstantComposite %v4float %float_1 %float_1 %float_1 %float_1
%_ptr_Function_v4float = OpTypePointer Function %v4float
         %11 = OpConstantNull %v4float
%dpdx_c487fa = OpFunction %void None %1
          %4 = OpLabel
      %arg_0 = OpVariable %_ptr_Function_v4float Function %11
        %res = OpVariable %_ptr_Function_v4float Function %11
               OpStore %arg_0 %8
         %13 = OpLoad %v4float %arg_0
         %12 = OpDPdx %v4float %13
               OpStore %res %12
               OpReturn
               OpFunctionEnd
%fragment_main = OpFunction %void None %1
         %16 = OpLabel
         %17 = OpFunctionCall %void %dpdx_c487fa
               OpReturn
               OpFunctionEnd