CoreUnfold

Documentation

data Unfolding

Records the unfolding of an identifier, which is approximately the form the identifier would have if we substituted its definition in for the identifier. This type should be treated as abstract everywhere except in CoreUnfold

Instances

Outputable Unfolding

Defined in PprCore

Methods

ppr :: Unfolding -> SDoc

pprPrec :: Rational -> Unfolding -> SDoc

data UnfoldingGuidance

UnfoldingGuidance says when unfolding should take place

Instances

Eq UnfoldingGuidance

Defined in CoreSyn

Methods

(==) :: UnfoldingGuidance -> UnfoldingGuidance -> Bool

(/=) :: UnfoldingGuidance -> UnfoldingGuidance -> Bool

Outputable UnfoldingGuidance

Defined in PprCore

Methods

ppr :: UnfoldingGuidance -> SDoc

pprPrec :: Rational -> UnfoldingGuidance -> SDoc

noUnfolding :: Unfolding

There is no known Unfolding

mkImplicitUnfolding :: DynFlags -> CoreExpr -> Unfolding

mkUnfolding :: DynFlags -> UnfoldingSource -> Bool -> Bool -> CoreExpr -> Unfolding

mkCoreUnfolding :: UnfoldingSource -> Bool -> CoreExpr -> UnfoldingGuidance -> Unfolding

mkTopUnfolding :: DynFlags -> Bool -> CoreExpr -> Unfolding

mkSimpleUnfolding :: DynFlags -> CoreExpr -> Unfolding

mkWorkerUnfolding :: DynFlags -> (CoreExpr -> CoreExpr) -> Unfolding -> Unfolding

mkInlineUnfolding :: CoreExpr -> Unfolding

Make an unfolding that may be used unsaturated (ug_unsat_ok = unSaturatedOk) and that is reported as having its manifest arity (the number of outer lambdas applications will resolve before doing any work).

mkInlineUnfoldingWithArity :: Arity -> CoreExpr -> Unfolding

Make an unfolding that will be used once the RHS has been saturated to the given arity.

mkInlinableUnfolding :: DynFlags -> CoreExpr -> Unfolding

mkWwInlineRule :: DynFlags -> CoreExpr -> Arity -> Unfolding

mkCompulsoryUnfolding :: CoreExpr -> Unfolding

mkDFunUnfolding :: [Var] -> DataCon -> [CoreExpr] -> Unfolding

specUnfolding :: DynFlags -> [Var] -> (CoreExpr -> CoreExpr) -> [CoreArg] -> Unfolding -> Unfolding

data ArgSummary

Constructors

TrivArg

NonTrivArg

ValueArg

Instances

Outputable ArgSummary

Defined in CoreUnfold

Methods

ppr :: ArgSummary -> SDoc

pprPrec :: Rational -> ArgSummary -> SDoc

couldBeSmallEnoughToInline :: DynFlags -> Int -> CoreExpr -> Bool

inlineBoringOk :: CoreExpr -> Bool

certainlyWillInline :: DynFlags -> IdInfo -> Maybe Unfolding

Sees if the unfolding is pretty certain to inline. If so, return a *stable* unfolding for it, that will always inline.

smallEnoughToInline :: DynFlags -> Unfolding -> Bool

callSiteInline :: DynFlags -> Id -> Bool -> Bool -> [ArgSummary] -> CallCtxt -> Maybe CoreExpr

data CallCtxt

Constructors

BoringCtxt

RhsCtxt

DiscArgCtxt

RuleArgCtxt

ValAppCtxt

CaseCtxt

Instances

Outputable CallCtxt

Defined in CoreUnfold

Methods

ppr :: CallCtxt -> SDoc

pprPrec :: Rational -> CallCtxt -> SDoc

exprIsConApp_maybe :: InScopeEnv -> CoreExpr -> Maybe (InScopeSet, [FloatBind], DataCon, [Type], [CoreExpr])

Returns Just ([b1..bp], dc, [t1..tk], [x1..xn]) if the argument expression is a *saturated* constructor application of the form let b1 in .. let bp in dc t1..tk x1 .. xn, where t1..tk are the *universally-quantified* type args of dc. Floats can also be (and most likely are) single-alternative case expressions. Why does exprIsConApp_maybe return floats? We may have to look through lets and cases to detect that we are in the presence of a data constructor wrapper. In this case, we need to return the lets and cases that we traversed. See Note [exprIsConApp_maybe on data constructors with wrappers]. Data constructor wrappers are unfolded late, but we really want to trigger case-of-known-constructor as early as possible. See also Note [Activation for data constructor wrappers] in MkId.

We also return the incoming InScopeSet, augmented with the binders from any [FloatBind] that we return

exprIsLiteral_maybe :: InScopeEnv -> CoreExpr -> Maybe Literal