PVS-Studio warning V501 for Clang

static GenericValue executeFCMP_UNO(GenericValue Src1,
                                    GenericValue Src2,
                                    Type *Ty) {
  GenericValue Dest;
  if (Ty->isFloatTy())
    Dest.IntVal = APInt(1,(Src1.FloatVal != Src1.FloatVal ||
                           Src2.FloatVal != Src2.FloatVal));
  else
    Dest.IntVal = APInt(1,(Src1.DoubleVal != Src1.DoubleVal ||
                           Src2.DoubleVal != Src2.DoubleVal));
  return Dest;
}

This suspicious code was found in Clang project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions to the left and to the right of the '!=' operator: Src1.FloatVal != Src1.FloatVal LLVMInterpreter execution.cpp 437

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