Index - U
| u1DataCon_RDR | PrelNames | 
| u1TyConKey | PrelNames | 
| u1TyConName | PrelNames | 
| UbxTupAlt | StgSyn | 
| UbxTupleRep | Type, GhcPlugins | 
| UDIV | SPARC.Instr | 
| ud_get_fs | Binary | 
| ud_get_name | Binary | 
| ud_put_fs | Binary | 
| ud_put_name | Binary | 
| ufmToList | UniqFM, GhcPlugins | 
| uf_arity | CoreSyn, GhcPlugins | 
| uf_expandable | CoreSyn, GhcPlugins | 
| uf_guidance | CoreSyn, GhcPlugins | 
| uf_is_conlike | CoreSyn, GhcPlugins | 
| uf_is_top | CoreSyn, GhcPlugins | 
| uf_is_value | CoreSyn, GhcPlugins | 
| uf_is_work_free | CoreSyn, GhcPlugins | 
| uf_src | CoreSyn, GhcPlugins | 
| uf_tmpl | CoreSyn, GhcPlugins | 
| ug_args | CoreSyn, GhcPlugins | 
| ug_boring_ok | CoreSyn, GhcPlugins | 
| ug_res | CoreSyn, GhcPlugins | 
| ug_size | CoreSyn, GhcPlugins | 
| ug_unsat_ok | CoreSyn, GhcPlugins | 
| UMUL | SPARC.Instr | 
| unarise | UnariseStg | 
| UnaryProd | Vectorise.Generic.Description | 
| UnaryRep | Type, GhcPlugins | 
| UnarySum | Vectorise.Generic.Description | 
| UnaryType | Type, GhcPlugins | 
| unblock | Exception | 
| unboundKey | PrelNames | 
| unboxArg | DsCCall | 
| Unboxed | BasicTypes, GhcPlugins | 
| unboxedPairDataCon | TysWiredIn, GhcPlugins | 
| unboxedPairTyCon | TysWiredIn, GhcPlugins | 
| unboxedSingletonDataCon | TysWiredIn, GhcPlugins | 
| unboxedSingletonTyCon | TysWiredIn, GhcPlugins | 
| UnboxedTuple | BasicTypes, GhcPlugins | 
| unboxedUnitDataCon | TysWiredIn, GhcPlugins | 
| unboxedUnitTyCon | TysWiredIn, GhcPlugins | 
| unbxTupleHeapCheck | CgHeapery | 
| uncacheModule | Finder | 
| unComp1_RDR | PrelNames | 
| uncurry3 | Util, GhcPlugins | 
| UndefinedElement | Exception | 
| undefinedKey | PrelNames | 
| undefinedName | PrelNames | 
| undefined_RDR | PrelNames | 
| Underflow | Exception | 
| underscore | Outputable, GhcPlugins | 
| undirected | Digraph | 
| unEC | CgExtCode | 
| UnfIfGoodArgs | CoreSyn, GhcPlugins | 
| UnfNever | CoreSyn, GhcPlugins | 
| Unfolding | CoreSyn, CoreUnfold, GhcPlugins | 
| unfoldingArity | CoreSyn, GhcPlugins | 
| UnfoldingDone | CoreMonad, GhcPlugins | 
| UnfoldingGuidance | CoreSyn, CoreUnfold, GhcPlugins | 
| unfoldingInfo | IdInfo, GhcPlugins | 
| UnfoldingSource | CoreSyn, GhcPlugins | 
| unfoldingTemplate | CoreSyn, GhcPlugins | 
| UnfWhen | CoreSyn, GhcPlugins | 
| unGhc | GhcMonad | 
| unGhcT | GhcMonad | 
| unguardedGRHSs | HsUtils, HsSyn, GHC | 
| unguardedRHS | HsUtils, HsSyn, GHC | 
| UnhelpfulLoc | SrcLoc, GhcPlugins, GHC | 
| UnhelpfulSpan | SrcLoc, GhcPlugins, GHC | 
| UnifyForAllSkol | TcRnTypes, TcRnMonad | 
| unifyKind | TcUnify | 
| unifyKindEq | TcUnify | 
| UnifyOrigin | TcRnTypes, TcRnMonad | 
| unifyTheta | TcUnify | 
| unifyType | TcUnify | 
| unifyTypeList | TcUnify | 
| UninitialisedData | Cmm, OldCmm | 
| uninterruptibleMask | Exception | 
| uninterruptibleMask_ | Exception | 
| union | GraphOps, GraphColor | 
| unionBags | Bag | 
| unionBlocks | Hoopl | 
| unionInScope | VarEnv, GhcPlugins | 
| unionLists | ListSetOps | 
| unionManyBags | Bag | 
| unionManyNameSets | NameSet, GhcPlugins | 
| unionManyOccSets | OccName, Name, GhcPlugins | 
| unionManyUniqSets | UniqSet, GhcPlugins | 
| unionNameSets | NameSet, GhcPlugins | 
| unionOccSets | OccName, Name, GhcPlugins | 
| unionRuleBase | Rules, GhcPlugins | 
| unionTvSubst | Type, TcType, GhcPlugins | 
| unionUniqSets | UniqSet, GhcPlugins | 
| unionVarSet | VarSet, GhcPlugins | 
| unionVarSets | VarSet, GhcPlugins | 
| unionWorkList | TcSMonad | 
| uniq | FastString, GhcPlugins | 
| uniqAway | VarEnv, GhcPlugins | 
| UniqFM | UniqFM, GhcPlugins | 
| uniqFromSupply | UniqSupply, GhcPlugins | 
| UniqSet | UniqSet, GhcPlugins | 
| uniqSetToList | UniqSet, GhcPlugins | 
| uniqsFromSupply | UniqSupply, GhcPlugins | 
| UniqSM | UniqSupply, GhcPlugins | 
| UniqSupply | UniqSupply, DsMonad, GhcPlugins | 
| Uniquable | Unique, PrelNames, GhcPlugins | 
| Unique | Unique, PrelNames, GhcPlugins | 
| UniqueMap | Hoopl | 
| UniqueMonad | Hoopl | 
| UniqueMonadT | Hoopl | 
| uniqueOfFS | FastString, GhcPlugins | 
| UniqueSet | Hoopl | 
| unitBag | Bag | 
| unitDataCon | TysWiredIn, GhcPlugins | 
| unitDataConId | TysWiredIn, GhcPlugins | 
| unitDirectlyUFM | UniqFM, GhcPlugins | 
| unitFV | NameSet, GhcPlugins | 
| unitImplication | Inst | 
| unitModuleEnv | Module, GhcPlugins | 
| unitNameEnv | NameEnv, GhcPlugins | 
| unitNameSet | NameSet, GhcPlugins | 
| unitOccEnv | OccName, Name, GhcPlugins | 
| unitOccSet | OccName, Name, GhcPlugins | 
| unitOL | OrdList | 
| unitTy | TysWiredIn, GhcPlugins | 
| unitTyCon | TysWiredIn, GhcPlugins | 
| unitTyConKey | PrelNames | 
| unitUFM | UniqFM, GhcPlugins | 
| unitUniqSet | UniqSet, GhcPlugins | 
| unitVarEnv | VarEnv, GhcPlugins | 
| unitVarSet | VarSet, GhcPlugins | 
| unK1_RDR | PrelNames | 
| unknown1TyConKey | PrelNames | 
| unknown2TyConKey | PrelNames | 
| unknown3TyConKey | PrelNames | 
| unknownArity | IdInfo, GhcPlugins | 
| unknownNameErr | RnEnv | 
| unknownTyConKey | PrelNames | 
| UnkSkol | TcRnTypes, TcRnMonad | 
| unliftedConKey | PrelNames | 
| unliftedTypeKind | TysPrim, Kind, Type, TcType, GhcPlugins | 
| unliftedTypeKindTyCon | TysPrim, Kind, Type, GhcPlugins | 
| unliftedTypeKindTyConKey | PrelNames | 
| unliftedTypeKindTyConName | TysPrim | 
| Unlinked | HscTypes, GhcPlugins | 
| UnlinkedBCO | |
| 1 (Type/Class) | ByteCodeAsm, ByteCodeGen | 
| 2 (Data Constructor) | ByteCodeAsm | 
| unlinkedBCOArity | ByteCodeAsm | 
| unlinkedBCOBitmap | ByteCodeAsm | 
| unlinkedBCOInstrs | ByteCodeAsm | 
| unlinkedBCOLits | ByteCodeAsm | 
| unlinkedBCOName | ByteCodeAsm | 
| unlinkedBCOPtrs | ByteCodeAsm | 
| Unlit | DriverPhases | 
| unload | Linker | 
| unloadObj | ObjLink | 
| unLoc | SrcLoc, GhcPlugins, GHC | 
| unmarshalObjectIdKey | PrelNames | 
| unmarshalObjectName | PrelNames | 
| unmarshalStringIdKey | PrelNames | 
| unmarshalStringName | PrelNames | 
| UnmaskAsyncExceptionsOp | PrimOp | 
| Unmasked | Exception | 
| unP | Lexer | 
| UNPACK | ByteCodeInstr | 
| UnpackClosureOp | PrimOp | 
| unpackCStringAppendIdKey | PrelNames | 
| unpackCStringFoldrIdKey | PrelNames | 
| unpackCStringFoldrName | PrelNames | 
| unpackCStringFoldr_RDR | PrelNames | 
| unpackCStringIdKey | PrelNames | 
| unpackCStringName | PrelNames | 
| unpackCStringUtf8IdKey | PrelNames | 
| unpackCStringUtf8Name | PrelNames | 
| unpackCStringUtf8_RDR | PrelNames | 
| unpackCString_RDR | PrelNames | 
| unpackFS | FastString, GhcPlugins | 
| unpackLitString | FastString, GhcPlugins | 
| unPair | Pair | 
| unPar1_RDR | PrelNames | 
| unpkUnique | Unique | 
| Unqual | RdrName, GhcPlugins, GHC | 
| unQualOK | RdrName, GhcPlugins | 
| unqualQuasiQuote | HsUtils, HsSyn, GHC | 
| unQualSpecOK | RdrName, GhcPlugins | 
| unqualSplice | HsUtils, HsSyn, GHC | 
| Unreachable | Llvm.AbsSyn, Llvm | 
| unRec1_RDR | PrelNames | 
| unReg | RegAlloc.Linear.Base, RegAlloc.Linear.Main | 
| UnresLabel | LlvmCodeGen.Base | 
| UnresStatic | LlvmCodeGen.Base | 
| unsafeChr | FastFunctions | 
| UnsafeCo | Coercion, GhcPlugins | 
| unsafeCoerceId | MkId | 
| unsafeCoerceIdKey | PrelNames | 
| unsafeCoerceName | MkId | 
| UnsafeCoercion | ExternalCore | 
| unsafeCoercionTyConKey | PrelNames | 
| unsafeDupableInterleaveIO | FastFunctions | 
| unsafeFlags | DynFlags, GhcPlugins | 
| UnsafeFreezeArrayArrayOp | PrimOp | 
| UnsafeFreezeArrayOp | PrimOp | 
| UnsafeFreezeByteArrayOp | PrimOp | 
| unsafeIndex_RDR | PrelNames | 
| unsafeInterleaveM | IOEnv, TcRnMonad | 
| unsafeRangeSize_RDR | PrelNames | 
| UnsafeThawArrayOp | PrimOp | 
| unSaturatedOk | CoreSyn, GhcPlugins | 
| unsetDOptM | TcRnMonad, DsMonad | 
| unsetWOptM | TcRnMonad, DsMonad | 
| Untouchables | TcRnTypes, TcRnMonad | 
| unwrapFamInstScrut | MkId | 
| unwrapNewTyCon_maybe | TyCon, GhcPlugins | 
| unwrapNewTypeBody | MkId | 
| unwrapNewTypeBodyOfPDatasWrap | Vectorise.Utils.Base, Vectorise.Utils | 
| unwrapNewTypeBodyOfPDataWrap | Vectorise.Utils.Base, Vectorise.Utils | 
| unwrapNewTypeBodyOfWrap | Vectorise.Utils.Base, Vectorise.Utils | 
| unwrapTypeFamInstScrut | MkId | 
| unzipWith | Util, GhcPlugins | 
| uo_actual | TcRnTypes, TcRnMonad | 
| uo_expected | TcRnTypes, TcRnMonad | 
| Updatable | StgSyn | 
| updateEps | TcRnMonad | 
| updateEps_ | TcRnMonad | 
| UpdateFlag | StgSyn | 
| updateNameCache | IfaceEnv | 
| updateTyVarKind | Var, GhcPlugins | 
| updateTyVarKindM | Var, GhcPlugins | 
| updCtxt | TcRnMonad | 
| updEnv | IOEnv, TcRnMonad | 
| updFlatCache | TcSMonad | 
| updfr | CmmNode, Cmm | 
| UpdFrameOffset | CmmNode, Cmm | 
| updfr_space | Cmm | 
| updGblEnv | TcRnMonad | 
| updGEnv | Vectorise.Monad.Global, Vectorise.Monad | 
| updInertSetTcS | TcSMonad | 
| updLclEnv | TcRnMonad | 
| updLEnv | Vectorise.Monad.Local, Vectorise.Monad | 
| updMode | SimplEnv | 
| updModeForInlineRules | SimplUtils | 
| updMutVar | IOEnv, TcRnMonad | 
| updNameCache | IfaceEnv | 
| updOptLevel | DynFlags, GhcPlugins | 
| updTcRef | TcRnMonad | 
| updTcSImplics | TcSMonad | 
| updWorkListTcS | TcSMonad | 
| updWorkListTcS_return | TcSMonad | 
| UpToDate | MkIface | 
| Usage | HscTypes, GhcPlugins | 
| UsageError | Panic, GHC | 
| UsageFile | HscTypes, GhcPlugins | 
| UsageHomeModule | HscTypes, GhcPlugins | 
| UsagePackageModule | HscTypes, GhcPlugins | 
| UserData | |
| 1 (Type/Class) | Binary | 
| 2 (Data Constructor) | Binary | 
| userHsTyVarBndrs | HsUtils, HsSyn, GHC | 
| UserInterrupt | Exception | 
| UserOfLocalRegs | CmmExpr, Cmm, OldCmm | 
| UserPkgConf | DynFlags, GhcPlugins | 
| userStyle | Outputable, GhcPlugins | 
| UserSyntax | Name, GhcPlugins | 
| UserTypeCtxt | TcType, TcMType, TcHsType | 
| UserTyVar | HsTypes, HsSyn, GHC | 
| Uses | NameSet, GhcPlugins | 
| usesOnly | NameSet, GhcPlugins | 
| usg_entities | HscTypes, GhcPlugins | 
| usg_exports | HscTypes, GhcPlugins | 
| usg_file_path | HscTypes, GhcPlugins | 
| usg_mod | HscTypes, GhcPlugins | 
| usg_mod_hash | HscTypes, GhcPlugins | 
| usg_mod_name | HscTypes, GhcPlugins | 
| usg_mtime | HscTypes, GhcPlugins | 
| usg_safe | HscTypes, GhcPlugins | 
| utf8CharStart | Encoding | 
| utf8DecodeChar | Encoding | 
| utf8DecodeChar# | Encoding | 
| utf8DecodeString | Encoding | 
| utf8EncodeChar | Encoding | 
| utf8EncodedLength | Encoding | 
| utf8EncodeString | Encoding | 
| utf8PrevChar | Encoding |