isRecordSelector,
isPrimOpId, isPrimOpId_maybe,
isFCallId, isFCallId_maybe,
- isDataConId, isDataConId_maybe,
+ isDataConWorkId, isDataConWorkId_maybe,
isDataConWrapId, isDataConWrapId_maybe,
isBottomingId,
hasNoBinding,
setIdNewStrictness, zapIdNewStrictness,
setIdWorkerInfo,
setIdSpecialisation,
- setIdCgInfo,
+ setIdCafInfo,
setIdOccInfo,
#ifdef OLD_STRICTNESS
idWorkerInfo,
idUnfolding,
idSpecialisation, idCoreRules,
- idCgInfo,
idCafInfo,
idLBVarInfo,
idOccInfo,
)
import qualified Var ( mkLocalId, mkGlobalId, mkSpecPragmaId )
import Type ( Type, typePrimRep, addFreeTyVars,
- usOnce, eqUsage, seqType, splitTyConApp_maybe )
+ seqType, splitTyConApp_maybe )
import IdInfo
+#ifdef OLD_STRICTNESS
import qualified Demand ( Demand )
+#endif
+import DataCon ( isUnboxedTupleCon )
import NewDemand ( Demand, StrictSig, topDmd, topSig, isBottomingSig )
import Name ( Name, OccName,
mkSystemName, mkSystemNameEncoded, mkInternalName,
)
import OccName ( EncodedFS, mkWorkerOcc )
import PrimRep ( PrimRep )
-import TysPrim ( statePrimTyCon )
import FieldLabel ( FieldLabel )
import Maybes ( orElse )
import SrcLoc ( SrcLoc )
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
-isDataConId_maybe id = case globalIdDetails id of
- DataConId con -> Just con
- other -> Nothing
+isDataConWorkId_maybe id = case globalIdDetails id of
+ DataConWorkId con -> Just con
+ other -> Nothing
isDataConWrapId_maybe id = case globalIdDetails id of
DataConWrapId con -> Just con
-- 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
+ GenericOpId _ -> 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
\end{code}
setIdSpecialisation id spec_info = modifyIdInfo (`setSpecInfo` spec_info) id
---------------------------------
- -- CG INFO
-idCgInfo :: Id -> CgInfo
-#ifdef OLD_STRICTNESS
-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
-
- ---------------------------------
-- CAF INFO
idCafInfo :: Id -> CafInfo
#ifdef OLD_STRICTNESS
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
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
- -- every function over realWorldStatePrimTy is a one-shot
- -- function. This is pretty true in practice, and makes a big
- -- difference. For example, consider
- -- a `thenST` \ r -> ...E...
- -- The early full laziness pass, if it doesn't know that r is one-shot
- -- will pull out E (let's say it doesn't mention r) to give
- -- let lvl = E in a `thenST` \ r -> ...lvl...
- -- When `thenST` gets inlined, we end up with
- -- let lvl = E in \s -> case a s of (r, s') -> ...lvl...
- -- and we don't re-inline E.
- --
- -- It would be better to spot that r was one-shot to start with, but
- -- I don't want to rely on that.
- --
- -- 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.
+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
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