bug/tint/1369.wgsl:3:3 warning: code is unreachable
  return true;
  ^^^^^^

bug/tint/1369.wgsl:9:9 warning: code is unreachable
    var also_unreachable : bool;
        ^^^^^^^^^^^^^^^^

; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 13
; Schema: 0
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %f "f"
               OpExecutionMode %f OriginUpperLeft
               OpName %call_discard "call_discard"
               OpName %f "f"
               OpName %v "v"
       %bool = OpTypeBool
          %1 = OpTypeFunction %bool
       %void = OpTypeVoid
          %5 = OpTypeFunction %void
%_ptr_Function_bool = OpTypePointer Function %bool
         %12 = OpConstantNull %bool
%call_discard = OpFunction %bool None %1
          %4 = OpLabel
               OpKill
               OpFunctionEnd
          %f = OpFunction %void None %5
          %8 = OpLabel
          %v = OpVariable %_ptr_Function_bool Function %12
          %9 = OpFunctionCall %bool %call_discard
               OpStore %v %9
               OpReturn
               OpFunctionEnd