Id, DictId,
-- Simple construction
- mkGlobalId, mkLocalId, mkSpecPragmaId, mkLocalIdWithInfo,
+ mkGlobalId, mkLocalId, mkLocalIdWithInfo,
mkSysLocal, mkUserLocal, mkVanillaGlobal,
mkTemplateLocals, mkTemplateLocalsNum, mkWildId, mkTemplateLocal,
- mkWorkerId,
+ mkWorkerId, mkExportedLocalId,
-- Taking an Id apart
idName, idType, idUnique, idInfo,
- idPrimRep, isId, globalIdDetails,
+ isId, globalIdDetails, idPrimRep,
recordSelectorFieldLabel,
-- Modifying an Id
- setIdName, setIdUnique, setIdType, setIdLocalExported, setGlobalIdDetails,
+ setIdName, setIdUnique, Id.setIdType, setIdExported, setIdNotExported,
setIdInfo, lazySetIdInfo, modifyIdInfo, maybeModifyIdInfo,
zapLamIdInfo, zapDemandIdInfo,
-- Predicates
- isImplicitId, isDeadBinder,
- isSpecPragmaId, isExportedId, isLocalId, isGlobalId,
- isRecordSelector,
+ isImplicitId, isDeadBinder, isDictId,
+ isExportedId, isLocalId, isGlobalId,
+ isRecordSelector, isNaughtyRecordSelector,
+ isClassOpId_maybe,
isPrimOpId, isPrimOpId_maybe,
isFCallId, isFCallId_maybe,
- isDataConId, isDataConId_maybe,
- isDataConWrapId, isDataConWrapId_maybe,
- isBottomingId,
- hasNoBinding,
+ isDataConWorkId, isDataConWorkId_maybe, isDataConId_maybe, idDataCon,
+ isBottomingId, idIsFrom,
+ hasNoBinding,
-- Inline pragma stuff
idInlinePragma, setInlinePragma, modifyInlinePragma,
-- One shot lambda stuff
- isOneShotLambda, setOneShotLambda, clearOneShotLambda,
+ isOneShotBndr, isOneShotLambda, isStateHackType,
+ setOneShotLambda, clearOneShotLambda,
-- IdInfo stuff
setIdUnfolding,
setIdArity,
- setIdDemandInfo, setIdNewDemandInfo,
- setIdStrictness, setIdNewStrictness, zapIdNewStrictness,
- setIdTyGenInfo,
+ setIdNewDemandInfo,
+ setIdNewStrictness, zapIdNewStrictness,
setIdWorkerInfo,
setIdSpecialisation,
- setIdCgInfo,
- setIdCprInfo,
+ setIdCafInfo,
setIdOccInfo,
+#ifdef OLD_STRICTNESS
+ idDemandInfo,
+ idStrictness,
+ idCprInfo,
+ setIdStrictness,
+ setIdDemandInfo,
+ setIdCprInfo,
+#endif
+
idArity,
- idDemandInfo, idNewDemandInfo,
- idStrictness, idNewStrictness, idNewStrictness_maybe,
- idTyGenInfo,
+ idNewDemandInfo, idNewDemandInfo_maybe,
+ idNewStrictness, idNewStrictness_maybe,
idWorkerInfo,
idUnfolding,
- idSpecialisation,
- idCgInfo,
+ idSpecialisation, idCoreRules,
idCafInfo,
- idCprInfo,
idLBVarInfo,
idOccInfo,
+#ifdef OLD_STRICTNESS
newStrictnessFromOld -- Temporary
+#endif
) where
#include "HsVersions.h"
-import CoreSyn ( Unfolding, CoreRules )
+import CoreSyn ( Unfolding, CoreRule )
import BasicTypes ( Arity )
import Var ( Id, DictId,
- isId, isExportedId, isSpecPragmaId, isLocalId,
+ isId, isExportedId, isLocalId,
idName, idType, idUnique, idInfo, isGlobalId,
- setIdName, setVarType, setIdUnique, setIdLocalExported,
+ setIdName, setIdType, setIdUnique,
+ setIdExported, setIdNotExported,
setIdInfo, lazySetIdInfo, modifyIdInfo,
maybeModifyIdInfo,
- globalIdDetails, setGlobalIdDetails
+ globalIdDetails
)
-import qualified Var ( mkLocalId, mkGlobalId, mkSpecPragmaId )
-import Type ( Type, typePrimRep, addFreeTyVars,
- usOnce, eqUsage, seqType, splitTyConApp_maybe )
-
+import qualified Var ( mkLocalId, mkGlobalId, mkExportedLocalId )
+import TyCon ( FieldLabel, TyCon )
+import Type ( Type, typePrimRep, addFreeTyVars, seqType,
+ splitTyConApp_maybe, PrimRep )
+import TcType ( isDictTy )
+import TysPrim ( statePrimTyCon )
import IdInfo
+#ifdef OLD_STRICTNESS
import qualified Demand ( Demand )
-import NewDemand ( Demand, StrictSig, topSig, isBottomingSig )
-import Name ( Name, OccName,
- mkSysLocalName, mkLocalName,
- getOccName, getSrcLoc
- )
-import OccName ( UserFS, mkWorkerOcc )
-import PrimRep ( PrimRep )
-import TysPrim ( statePrimTyCon )
-import FieldLabel ( FieldLabel )
+#endif
+import DataCon ( DataCon, isUnboxedTupleCon )
+import NewDemand ( Demand, StrictSig, topDmd, topSig, isBottomingSig )
+import Name ( Name, OccName, nameIsLocalOrFrom,
+ mkSystemVarName, mkInternalName, getOccName,
+ getSrcLoc )
+import Module ( Module )
+import OccName ( mkWorkerOcc )
import Maybes ( orElse )
import SrcLoc ( SrcLoc )
import Outputable
import Unique ( Unique, mkBuiltinUnique )
+import FastString ( FastString )
+import StaticFlags ( opt_NoStateHack )
+-- infixl so you can say (id `set` a `set` b)
infixl 1 `setIdUnfolding`,
`setIdArity`,
- `setIdDemandInfo`,
- `setIdStrictness`,
`setIdNewDemandInfo`,
`setIdNewStrictness`,
- `setIdTyGenInfo`,
`setIdWorkerInfo`,
`setIdSpecialisation`,
`setInlinePragma`,
- `idCafInfo`,
- `idCprInfo`
-
- -- infixl so you can say (id `set` a `set` b)
+ `idCafInfo`
+#ifdef OLD_STRICTNESS
+ ,`idCprInfo`
+ ,`setIdStrictness`
+ ,`setIdDemandInfo`
+#endif
\end{code}
mkLocalIdWithInfo :: Name -> Type -> IdInfo -> Id
mkLocalIdWithInfo name ty info = Var.mkLocalId name (addFreeTyVars ty) info
-mkSpecPragmaId :: Name -> Type -> Id
-mkSpecPragmaId name ty = Var.mkSpecPragmaId name (addFreeTyVars ty) vanillaIdInfo
+mkExportedLocalId :: Name -> Type -> Id
+mkExportedLocalId name ty = Var.mkExportedLocalId name (addFreeTyVars ty) vanillaIdInfo
mkGlobalId :: GlobalIdDetails -> Name -> Type -> IdInfo -> Id
mkGlobalId details name ty info = Var.mkGlobalId details name (addFreeTyVars ty) info
-- SysLocal: for an Id being created by the compiler out of thin air...
-- UserLocal: an Id with a name the user might recognize...
mkUserLocal :: OccName -> Unique -> Type -> SrcLoc -> Id
-mkSysLocal :: UserFS -> Unique -> Type -> Id
+mkSysLocal :: FastString -> Unique -> Type -> Id
mkVanillaGlobal :: Name -> Type -> IdInfo -> Id
-mkSysLocal fs uniq ty = mkLocalId (mkSysLocalName uniq fs) ty
-mkUserLocal occ uniq ty loc = mkLocalId (mkLocalName uniq occ loc) ty
+mkSysLocal fs uniq ty = mkLocalId (mkSystemVarName uniq fs) ty
+
+mkUserLocal occ uniq ty loc = mkLocalId (mkInternalName uniq occ loc) ty
mkVanillaGlobal = mkGlobalId VanillaGlobal
\end{code}
\begin{code}
-- "Wild Id" typically used when you need a binder that you don't expect to use
mkWildId :: Type -> Id
-mkWildId ty = mkSysLocal SLIT("wild") (mkBuiltinUnique 1) ty
+mkWildId ty = mkSysLocal FSLIT("wild") (mkBuiltinUnique 1) ty
mkWorkerId :: Unique -> Id -> Type -> Id
--- A worker gets a local name. CoreTidy will globalise it if necessary.
+-- A worker gets a local name. CoreTidy will externalise it if necessary.
mkWorkerId uniq unwrkr ty
= mkLocalId wkr_name ty
where
- wkr_name = mkLocalName uniq (mkWorkerOcc (getOccName unwrkr)) (getSrcLoc unwrkr)
+ wkr_name = mkInternalName uniq (mkWorkerOcc (getOccName unwrkr)) (getSrcLoc unwrkr)
-- "Template locals" typically used in unfoldings
mkTemplateLocals :: [Type] -> [Id]
mkTemplateLocalsNum n tys = zipWith mkTemplateLocal [n..] tys
mkTemplateLocal :: Int -> Type -> Id
-mkTemplateLocal i ty = mkSysLocal SLIT("tpl") (mkBuiltinUnique i) ty
+mkTemplateLocal i ty = mkSysLocal FSLIT("tpl") (mkBuiltinUnique i) ty
\end{code}
\begin{code}
setIdType :: Id -> Type -> Id
-- Add free tyvar info to the type
-setIdType id ty = seqType ty `seq` setVarType id (addFreeTyVars ty)
+setIdType id ty = seqType ty `seq` Var.setIdType id (addFreeTyVars ty)
idPrimRep :: Id -> PrimRep
idPrimRep id = typePrimRep (idType id)
%* *
%************************************************************************
-The @SpecPragmaId@ exists only to make Ids that are
-on the *LHS* of bindings created by SPECIALISE pragmas;
-eg: s = f Int d
-The SpecPragmaId is never itself mentioned; it
-exists solely so that the specialiser will find
-the call to f, and make specialised version of it.
-The SpecPragmaId binding is discarded by the specialiser
-when it gathers up overloaded calls.
-Meanwhile, it is not discarded as dead code.
-
-
\begin{code}
-recordSelectorFieldLabel :: Id -> FieldLabel
+recordSelectorFieldLabel :: Id -> (TyCon, FieldLabel)
recordSelectorFieldLabel id = case globalIdDetails id of
- RecordSelId lbl -> lbl
+ RecordSelId tycon lbl _ -> (tycon,lbl)
+ other -> panic "recordSelectorFieldLabel"
isRecordSelector id = case globalIdDetails id of
- RecordSelId lbl -> True
+ RecordSelId {} -> True
other -> False
+isNaughtyRecordSelector id = case globalIdDetails id of
+ RecordSelId { sel_naughty = n } -> n
+ other -> False
+
+isClassOpId_maybe id = case globalIdDetails id of
+ ClassOpId cls -> Just cls
+ _other -> Nothing
+
isPrimOpId id = case globalIdDetails id of
PrimOpId op -> True
other -> False
FCallId call -> Just call
other -> Nothing
-isDataConId id = case globalIdDetails id of
- DataConId _ -> True
- other -> False
+isDataConWorkId id = case globalIdDetails id of
+ DataConWorkId _ -> True
+ other -> False
+
+isDataConWorkId_maybe id = case globalIdDetails id of
+ DataConWorkId con -> Just con
+ other -> Nothing
+isDataConId_maybe :: Id -> Maybe DataCon
isDataConId_maybe id = case globalIdDetails id of
- DataConId con -> Just con
- other -> Nothing
+ DataConWorkId con -> Just con
+ DataConWrapId con -> Just con
+ other -> Nothing
-isDataConWrapId_maybe id = case globalIdDetails id of
- DataConWrapId con -> Just con
- other -> Nothing
+idDataCon :: Id -> DataCon
+-- Get from either the worker or the wrapper to the DataCon
+-- Currently used only in the desugarer
+-- INVARIANT: idDataCon (dataConWrapId d) = d
+-- (Remember, dataConWrapId can return either the wrapper or the worker.)
+idDataCon id = case globalIdDetails id of
+ DataConWorkId con -> con
+ DataConWrapId con -> con
+ other -> pprPanic "idDataCon" (ppr id)
-isDataConWrapId id = case globalIdDetails id of
- DataConWrapId con -> True
- other -> False
+
+isDictId :: Id -> Bool
+isDictId id = isDictTy (idType id)
-- hasNoBinding returns True of an Id which may not have a
-- binding, even though it is defined in this module.
-- Data constructor workers used to be things of this kind, but
-- they aren't any more. Instead, we inject a binding for
--- them at the CorePrep stage.
+-- them at the CorePrep stage.
+-- EXCEPT: unboxed tuples, which definitely have no binding
hasNoBinding id = case globalIdDetails id of
- PrimOpId _ -> True
- FCallId _ -> True
- other -> False
+ PrimOpId _ -> True
+ FCallId _ -> True
+ DataConWorkId dc -> isUnboxedTupleCon dc
+ other -> False
isImplicitId :: Id -> Bool
-- isImplicitId tells whether an Id's info is implied by other
-- file, even if it's mentioned in some other interface unfolding.
isImplicitId id
= case globalIdDetails id of
- RecordSelId _ -> True -- Includes dictionary selectors
+ RecordSelId {} -> True
FCallId _ -> True
PrimOpId _ -> True
- DataConId _ -> True
+ ClassOpId _ -> True
+ DataConWorkId _ -> True
DataConWrapId _ -> True
-- These are are implied by their type or class decl;
-- remember that all type and class decls appear in the interface file.
- -- The dfun id must *not* be omitted, because it carries version info for
- -- the instance decl
+ -- The dfun id is not an implicit Id; it must *not* be omitted, because
+ -- it carries version info for the instance decl
other -> False
+
+idIsFrom :: Module -> Id -> Bool
+idIsFrom mod id = nameIsLocalOrFrom mod (idName id)
\end{code}
\begin{code}
setIdArity :: Id -> Arity -> Id
setIdArity id arity = modifyIdInfo (`setArityInfo` arity) id
+#ifdef OLD_STRICTNESS
---------------------------------
- -- STRICTNESS
+ -- (OLD) STRICTNESS
idStrictness :: Id -> StrictnessInfo
idStrictness id = strictnessInfo (idInfo id)
setIdStrictness :: Id -> StrictnessInfo -> Id
setIdStrictness id strict_info = modifyIdInfo (`setStrictnessInfo` strict_info) id
+#endif
-- isBottomingId returns true if an application to n args would diverge
isBottomingId :: Id -> Bool
zapIdNewStrictness id = modifyIdInfo (`setNewStrictnessInfo` Nothing) id
---------------------------------
- -- TYPE GENERALISATION
-idTyGenInfo :: Id -> TyGenInfo
-idTyGenInfo id = tyGenInfo (idInfo id)
-
-setIdTyGenInfo :: Id -> TyGenInfo -> Id
-setIdTyGenInfo id tygen_info = modifyIdInfo (`setTyGenInfo` tygen_info) id
-
- ---------------------------------
-- WORKER ID
idWorkerInfo :: Id -> WorkerInfo
idWorkerInfo id = workerInfo (idInfo id)
setIdUnfolding :: Id -> Unfolding -> Id
setIdUnfolding id unfolding = modifyIdInfo (`setUnfoldingInfo` unfolding) id
+#ifdef OLD_STRICTNESS
---------------------------------
- -- DEMAND
+ -- (OLD) DEMAND
idDemandInfo :: Id -> Demand.Demand
idDemandInfo id = demandInfo (idInfo id)
setIdDemandInfo :: Id -> Demand.Demand -> Id
setIdDemandInfo id demand_info = modifyIdInfo (`setDemandInfo` demand_info) id
+#endif
+
+idNewDemandInfo_maybe :: Id -> Maybe NewDemand.Demand
+idNewDemandInfo :: Id -> NewDemand.Demand
-idNewDemandInfo :: Id -> NewDemand.Demand
-idNewDemandInfo id = newDemandInfo (idInfo id)
+idNewDemandInfo_maybe id = newDemandInfo (idInfo id)
+idNewDemandInfo id = newDemandInfo (idInfo id) `orElse` NewDemand.topDmd
setIdNewDemandInfo :: Id -> NewDemand.Demand -> Id
-setIdNewDemandInfo id dmd = modifyIdInfo (`setNewDemandInfo` dmd) id
+setIdNewDemandInfo id dmd = modifyIdInfo (`setNewDemandInfo` Just dmd) id
---------------------------------
-- SPECIALISATION
-idSpecialisation :: Id -> CoreRules
+idSpecialisation :: Id -> SpecInfo
idSpecialisation id = specInfo (idInfo id)
-setIdSpecialisation :: Id -> CoreRules -> Id
-setIdSpecialisation id spec_info = modifyIdInfo (`setSpecInfo` spec_info) id
+idCoreRules :: Id -> [CoreRule]
+idCoreRules id = specInfoRules (idSpecialisation id)
- ---------------------------------
- -- CG INFO
-idCgInfo :: Id -> CgInfo
-#ifdef DEBUG
-idCgInfo id = case cgInfo (idInfo id) of
- NoCgInfo -> pprPanic "idCgInfo" (ppr id)
- info -> info
-#else
-idCgInfo id = cgInfo (idInfo id)
-#endif
-
-setIdCgInfo :: Id -> CgInfo -> Id
-setIdCgInfo id cg_info = modifyIdInfo (`setCgInfo` cg_info) id
+setIdSpecialisation :: Id -> SpecInfo -> Id
+setIdSpecialisation id spec_info = modifyIdInfo (`setSpecInfo` spec_info) id
---------------------------------
-- CAF INFO
idCafInfo :: Id -> CafInfo
-#ifdef DEBUG
+#ifdef OLD_STRICTNESS
idCafInfo id = case cgInfo (idInfo id) of
NoCgInfo -> pprPanic "idCafInfo" (ppr id)
info -> cgCafInfo info
#else
-idCafInfo id = cgCafInfo (idCgInfo id)
+idCafInfo id = cafInfo (idInfo id)
#endif
+setIdCafInfo :: Id -> CafInfo -> Id
+setIdCafInfo id caf_info = modifyIdInfo (`setCafInfo` caf_info) id
+
---------------------------------
-- CPR INFO
+#ifdef OLD_STRICTNESS
idCprInfo :: Id -> CprInfo
idCprInfo id = cprInfo (idInfo id)
setIdCprInfo :: Id -> CprInfo -> Id
setIdCprInfo id cpr_info = modifyIdInfo (`setCprInfo` cpr_info) id
+#endif
---------------------------------
-- Occcurrence INFO
idLBVarInfo :: Id -> LBVarInfo
idLBVarInfo id = lbvarInfo (idInfo id)
-isOneShotLambda :: Id -> Bool
-isOneShotLambda id = analysis || hack
- where analysis = case idLBVarInfo id of
- LBVarInfo u | u `eqUsage` usOnce -> True
- other -> False
- hack = case splitTyConApp_maybe (idType id) of
- Just (tycon,_) | tycon == statePrimTyCon -> True
- other -> False
-
- -- The last clause is a gross hack. It claims that
+isOneShotBndr :: Id -> Bool
+-- This one is the "business end", called externally.
+-- Its main purpose is to encapsulate the Horrible State Hack
+isOneShotBndr id = isOneShotLambda id || (isStateHackType (idType id))
+
+isStateHackType :: Type -> Bool
+isStateHackType ty
+ | opt_NoStateHack
+ = False
+ | otherwise
+ = case splitTyConApp_maybe ty of
+ Just (tycon,_) -> tycon == statePrimTyCon
+ other -> False
+ -- This is a gross hack. It claims that
-- every function over realWorldStatePrimTy is a one-shot
-- function. This is pretty true in practice, and makes a big
-- difference. For example, consider
-- Another good example is in fill_in in PrelPack.lhs. We should be able to
-- spot that fill_in has arity 2 (and when Keith is done, we will) but we can't yet.
+
+-- The OneShotLambda functions simply fiddle with the IdInfo flag
+isOneShotLambda :: Id -> Bool
+isOneShotLambda id = case idLBVarInfo id of
+ IsOneShotLambda -> True
+ NoLBVarInfo -> False
+
setOneShotLambda :: Id -> Id
-setOneShotLambda id = modifyIdInfo (`setLBVarInfo` LBVarInfo usOnce) id
+setOneShotLambda id = modifyIdInfo (`setLBVarInfo` IsOneShotLambda) id
clearOneShotLambda :: Id -> Id
clearOneShotLambda id
projects / ghc-hetmet.git / blobdiff