zapLamIdInfo, zapDemandIdInfo, zapFragileIdInfo,
-- Predicates
- isImplicitId, isDeadBinder, isDictId,
+ isImplicitId, isDeadBinder, isDictId, isStrictId,
isExportedId, isLocalId, isGlobalId,
isRecordSelector, isNaughtyRecordSelector,
isClassOpId_maybe,
isFCallId, isFCallId_maybe,
isDataConWorkId, isDataConWorkId_maybe, isDataConId_maybe, idDataCon,
isBottomingId, idIsFrom,
+ isTickBoxOp, isTickBoxOp_maybe,
hasNoBinding,
-- Inline pragma stuff
import NewDemand
import Name
import Module
+import Class
+import PrimOp
+import ForeignCall
import OccName
import Maybes
import SrcLoc
-- UserLocal: an Id with a name the user might recognize...
-mkUserLocal :: OccName -> Unique -> Type -> SrcLoc -> Id
+mkUserLocal :: OccName -> Unique -> Type -> SrcSpan -> Id
mkVanillaGlobal :: Name -> Type -> IdInfo -> Id
mkUserLocal occ uniq ty loc = mkLocalId (mkInternalName uniq occ loc) ty
mkWorkerId uniq unwrkr ty
= mkLocalId wkr_name ty
where
- wkr_name = mkInternalName uniq (mkWorkerOcc (getOccName unwrkr)) (getSrcLoc unwrkr)
+ wkr_name = mkInternalName uniq (mkWorkerOcc (getOccName unwrkr)) (getSrcSpan unwrkr)
-- "Template locals" typically used in unfoldings
mkTemplateLocals :: [Type] -> [Id]
\begin{code}
recordSelectorFieldLabel :: Id -> (TyCon, FieldLabel)
-recordSelectorFieldLabel id = case globalIdDetails id of
- RecordSelId tycon lbl _ -> (tycon,lbl)
- other -> panic "recordSelectorFieldLabel"
+recordSelectorFieldLabel id
+ = case globalIdDetails id of
+ RecordSelId { sel_tycon = tycon, sel_label = lbl } -> (tycon,lbl)
+ _ -> panic "recordSelectorFieldLabel"
+
+isRecordSelector :: Var -> Bool
+isNaughtyRecordSelector :: Var -> Bool
+isPrimOpId :: Var -> Bool
+isFCallId :: Var -> Bool
+isDataConWorkId :: Var -> Bool
+hasNoBinding :: Var -> Bool
+
+isClassOpId_maybe :: Var -> Maybe Class
+isPrimOpId_maybe :: Var -> Maybe PrimOp
+isFCallId_maybe :: Var -> Maybe ForeignCall
+isDataConWorkId_maybe :: Var -> Maybe DataCon
isRecordSelector id = case globalIdDetails id of
- RecordSelId {} -> True
- other -> False
+ RecordSelId {} -> True
+ _ -> False
isNaughtyRecordSelector id = case globalIdDetails id of
- RecordSelId { sel_naughty = n } -> n
- other -> False
+ RecordSelId { sel_naughty = n } -> n
+ _ -> 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
+ PrimOpId _ -> True
+ _ -> False
isPrimOpId_maybe id = case globalIdDetails id of
- PrimOpId op -> Just op
- other -> Nothing
+ PrimOpId op -> Just op
+ _ -> Nothing
isFCallId id = case globalIdDetails id of
- FCallId call -> True
- other -> False
+ FCallId _ -> True
+ _ -> False
isFCallId_maybe id = case globalIdDetails id of
- FCallId call -> Just call
- other -> Nothing
+ FCallId call -> Just call
+ _ -> Nothing
isDataConWorkId id = case globalIdDetails id of
- DataConWorkId _ -> True
- other -> False
+ DataConWorkId _ -> True
+ _ -> False
isDataConWorkId_maybe id = case globalIdDetails id of
- DataConWorkId con -> Just con
- other -> Nothing
+ DataConWorkId con -> Just con
+ _ -> Nothing
isDataConId_maybe :: Id -> Maybe DataCon
isDataConId_maybe id = case globalIdDetails id of
- DataConWorkId con -> Just con
- DataConWrapId con -> Just con
- other -> Nothing
+ DataConWorkId con -> Just con
+ DataConWrapId con -> Just con
+ _ -> Nothing
idDataCon :: Id -> DataCon
-- Get from either the worker or the wrapper to the DataCon
-- 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)
+ DataConWorkId con -> con
+ DataConWrapId con -> con
+ _ -> pprPanic "idDataCon" (ppr id)
isDictId :: Id -> Bool
-- them at the CorePrep stage.
-- EXCEPT: unboxed tuples, which definitely have no binding
hasNoBinding id = case globalIdDetails id of
- PrimOpId _ -> True
+ PrimOpId _ -> True -- See Note [Primop wrappers]
FCallId _ -> True
DataConWorkId dc -> isUnboxedTupleCon dc
- other -> False
+ _ -> False
isImplicitId :: Id -> Bool
-- isImplicitId tells whether an Id's info is implied by other
-- remember that all type and class decls appear in the interface file.
-- The dfun id is not an implicit Id; it must *not* be omitted, because
-- it carries version info for the instance decl
- other -> False
+ _ -> False
idIsFrom :: Module -> Id -> Bool
idIsFrom mod id = nameIsLocalOrFrom mod (idName id)
\end{code}
+Note [Primop wrappers]
+~~~~~~~~~~~~~~~~~~~~~~
+Currently hasNoBinding claims that PrimOpIds don't have a curried
+function definition. But actually they do, in GHC.PrimopWrappers,
+which is auto-generated from prelude/primops.txt.pp. So actually, hasNoBinding
+could return 'False' for PrimOpIds.
+
+But we'd need to add something in CoreToStg to swizzle any unsaturated
+applications of GHC.Prim.plusInt# to GHC.PrimopWrappers.plusInt#.
+
+Nota Bene: GHC.PrimopWrappers is needed *regardless*, because it's
+used by GHCi, which does not implement primops direct at all.
+
+
+
\begin{code}
isDeadBinder :: Id -> Bool
isDeadBinder bndr | isId bndr = isDeadOcc (idOccInfo bndr)
| otherwise = False -- TyVars count as not dead
\end{code}
+\begin{code}
+isTickBoxOp :: Id -> Bool
+isTickBoxOp id =
+ case globalIdDetails id of
+ TickBoxOpId _ -> True
+ _ -> False
+
+isTickBoxOp_maybe :: Id -> Maybe TickBoxOp
+isTickBoxOp_maybe id =
+ case globalIdDetails id of
+ TickBoxOpId tick -> Just tick
+ _ -> Nothing
+\end{code}
%************************************************************************
%* *
zapIdNewStrictness :: Id -> Id
zapIdNewStrictness id = modifyIdInfo (`setNewStrictnessInfo` Nothing) id
+\end{code}
+
+This predicate says whether the id has a strict demand placed on it or
+has a type such that it can always be evaluated strictly (e.g., an
+unlifted type, but see the comment for isStrictType). We need to
+check separately whether <id> has a so-called "strict type" because if
+the demand for <id> hasn't been computed yet but <id> has a strict
+type, we still want (isStrictId <id>) to be True.
+\begin{code}
+isStrictId :: Id -> Bool
+isStrictId id
+ = ASSERT2( isId id, text "isStrictId: not an id: " <+> ppr id )
+ (isStrictDmd (idNewDemandInfo id)) ||
+ (isStrictType (idType id))
---------------------------------
-- WORKER ID
| otherwise
= case splitTyConApp_maybe ty of
Just (tycon,_) -> tycon == statePrimTyCon
- other -> False
+ _ -> 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
zapLamIdInfo :: Id -> Id
zapLamIdInfo = zapInfo zapLamInfo
+zapDemandIdInfo :: Id -> Id
zapDemandIdInfo = zapInfo zapDemandInfo
zapFragileIdInfo :: Id -> Id
projects / ghc-hetmet.git / blobdiff