ppRegDecl :: RegDecl -> Doc
ppRegDecl (RegDecl reg_type mb_range vars)
  = text (show reg_type) <+> mb ppRange mb_range <+> ppRegVars vars <> semi
ppRegDecl :: RegDecl -> Doc
ppRegDecl (RegDecl reg_type mb_range vars)
  = text (show reg_type) <+> mb ppRange mb_range <+> ppRegVars vars <> semi
ppRegDecl (RegDecl reg_type mb_range vars)
  = text (show reg_type) <+> mb ppRange mb_range <+> ppRegVars vars <> semi