               OpCapability Shader
               OpExtension "SPV_KHR_non_semantic_info"
          %1 = OpExtInstImport "GLSL.std.450"
         %12 = OpExtInstImport "NonSemantic.DebugPrintf"
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
         %10 = OpString "signed == %d"
               OpSource GLSL 450
               OpSourceExtension "GL_EXT_debug_printf"
               OpName %main "main"
               OpName %foo "foo"
       %void = OpTypeVoid
          %3 = OpTypeFunction %void
       %uint = OpTypeInt 32 0
%_ptr_Function_uint = OpTypePointer Function %uint
   %uint_127 = OpConstant %uint 127
       %main = OpFunction %void None %3
          %5 = OpLabel
        %foo = OpVariable %_ptr_Function_uint Function
               OpStore %foo %uint_127
         %11 = OpLoad %uint %foo
         %13 = OpExtInst %void %12 1 %10 %11
               OpReturn
               OpFunctionEnd
