diagnostic_filtering/switch_body_attribute.wgsl:5:11 warning: 'dpdx' must only be called from uniform control flow
      _ = dpdx(1.0);
          ^^^^^^^^^

diagnostic_filtering/switch_body_attribute.wgsl:3:3 note: control flow depends on possibly non-uniform value
  switch (i32(x)) @diagnostic(warning, derivative_uniformity) {
  ^^^^^^

diagnostic_filtering/switch_body_attribute.wgsl:3:15 note: user-defined input 'x' of 'main' may be non-uniform
  switch (i32(x)) @diagnostic(warning, derivative_uniformity) {
              ^

; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 32
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %main "main" %x_1
               OpExecutionMode %main OriginUpperLeft
               OpName %x_1 "x_1"
               OpName %tint_ftoi "tint_ftoi"
               OpName %v "v"
               OpName %main_inner "main_inner"
               OpName %x "x"
               OpName %main "main"
               OpDecorate %x_1 Location 0
      %float = OpTypeFloat 32
%_ptr_Input_float = OpTypePointer Input %float
        %x_1 = OpVariable %_ptr_Input_float Input
        %int = OpTypeInt 32 1
          %4 = OpTypeFunction %int %float
%float_2_14748352e_09 = OpConstant %float 2.14748352e+09
       %bool = OpTypeBool
%float_n2_14748365e_09 = OpConstant %float -2.14748365e+09
%int_n2147483648 = OpConstant %int -2147483648
%int_2147483647 = OpConstant %int 2147483647
       %void = OpTypeVoid
         %19 = OpTypeFunction %void %float
         %27 = OpTypeFunction %void
  %tint_ftoi = OpFunction %int None %4
          %v = OpFunctionParameter %float
          %8 = OpLabel
         %11 = OpFOrdLessThan %bool %v %float_2_14748352e_09
         %15 = OpFOrdLessThan %bool %v %float_n2_14748365e_09
         %17 = OpConvertFToS %int %v
         %13 = OpSelect %int %15 %int_n2147483648 %17
          %9 = OpSelect %int %11 %13 %int_2147483647
               OpReturnValue %9
               OpFunctionEnd
 %main_inner = OpFunction %void None %19
          %x = OpFunctionParameter %float
         %23 = OpLabel
         %25 = OpFunctionCall %int %tint_ftoi %x
               OpSelectionMerge %24 None
               OpSwitch %25 %26
         %26 = OpLabel
               OpBranch %24
         %24 = OpLabel
               OpReturn
               OpFunctionEnd
       %main = OpFunction %void None %27
         %29 = OpLabel
         %31 = OpLoad %float %x_1
         %30 = OpFunctionCall %void %main_inner %31
               OpReturn
               OpFunctionEnd