%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[StgSyn]{Shared term graph (STG) syntax for spineless-tagless code generation}
suited to spineless tagless code generation.
\begin{code}
-#include "HsVersions.h"
-
module StgSyn (
GenStgArg(..),
- SYN_IE(GenStgLiveVars),
+ GenStgLiveVars,
GenStgBinding(..), GenStgExpr(..), GenStgRhs(..),
GenStgCaseAlts(..), GenStgCaseDefault(..),
- UpdateFlag(..),
+ UpdateFlag(..), isUpdatable,
StgBinderInfo(..),
stgArgOcc, stgUnsatOcc, stgStdHeapOcc, stgNoUpdHeapOcc,
combineStgBinderInfo,
-- a set of synonyms for the most common (only :-) parameterisation
- SYN_IE(StgArg), SYN_IE(StgLiveVars),
- SYN_IE(StgBinding), SYN_IE(StgExpr), SYN_IE(StgRhs),
- SYN_IE(StgCaseAlts), SYN_IE(StgCaseDefault),
+ StgArg, StgLiveVars,
+ StgBinding, StgExpr, StgRhs,
+ StgCaseAlts, StgCaseDefault,
+
+ -- SRTs
+ SRT(..), noSRT,
- pprPlainStgBinding,
+ pprStgBinding, pprStgBindings, pprStgBindingsWithSRTs,
getArgPrimRep,
isLitLitArg,
stgArity,
collectFinalStgBinders
+
+#ifdef DEBUG
+ , pprStgLVs
+#endif
) where
-IMP_Ubiq(){-uitous-}
-
-import CostCentre ( showCostCentre )
-import Id ( idPrimRep, GenId{-instance NamedThing-} )
-import Literal ( literalPrimRep, isLitLitLit, Literal{-instance Outputable-} )
-import Name ( pprNonSym )
-import Outputable ( ifPprDebug, interppSP, interpp'SP,
- Outputable(..){-instance * Bool-}
- )
-import PprStyle ( PprStyle(..) )
-import PprType ( GenType{-instance Outputable-} )
-import Pretty -- all of it
-import PrimOp ( PrimOp{-instance Outputable-} )
-import Unique ( pprUnique )
-import UniqSet ( isEmptyUniqSet, uniqSetToList, SYN_IE(UniqSet) )
-import Util ( panic )
+#include "HsVersions.h"
+
+import CostCentre ( CostCentreStack, CostCentre )
+import Id ( idPrimRep, Id )
+import Const ( Con(..), DataCon, Literal,
+ conPrimRep, isLitLitLit )
+import PrimRep ( PrimRep(..) )
+import Outputable
+import Type ( Type )
+import UniqSet ( isEmptyUniqSet, uniqSetToList, UniqSet )
\end{code}
%************************************************************************
data GenStgBinding bndr occ
= StgNonRec bndr (GenStgRhs bndr occ)
| StgRec [(bndr, GenStgRhs bndr occ)]
- | StgCoerceBinding bndr occ
\end{code}
%************************************************************************
\begin{code}
data GenStgArg occ
= StgVarArg occ
- | StgLitArg Literal
+ | StgConArg Con -- A literal or nullary data constructor
\end{code}
\begin{code}
getArgPrimRep (StgVarArg local) = idPrimRep local
-getArgPrimRep (StgLitArg lit) = literalPrimRep lit
+getArgPrimRep (StgConArg con) = conPrimRep con
-isLitLitArg (StgLitArg x) = isLitLitLit x
-isLitLitArg _ = False
+isLitLitArg (StgConArg (Literal x)) = isLitLitLit x
+isLitLitArg _ = False
\end{code}
%************************************************************************
data GenStgExpr bndr occ
= StgApp
- (GenStgArg occ) -- function
+ occ -- function
[GenStgArg occ] -- arguments
- (GenStgLiveVars occ) -- Live vars in continuation; ie not
- -- including the function and args
-- NB: a literal is: StgApp <lit-atom> [] ...
\end{code}
%* *
%************************************************************************
-There are two specialised forms of application, for
-constructors and primitives.
+There are a specialised forms of application, for
+constructors, primitives, and literals.
\begin{code}
| StgCon -- always saturated
- Id -- data constructor
+ Con
[GenStgArg occ]
- (GenStgLiveVars occ) -- Live vars in continuation; ie not
- -- including the constr and args
- | StgPrim -- always saturated
- PrimOp
- [GenStgArg occ]
- (GenStgLiveVars occ) -- Live vars in continuation; ie not
- -- including the op and args
+ Type -- Result type; this is needed for primops, where
+ -- we need to know the result type so that we can
+ -- assign result registers.
+
\end{code}
These forms are to do ``inline versions,'' as it were.
An example might be: @f x = x:[]@.
-- binder-variables are NOT counted in the
-- free vars for the alt's RHS
- Unique -- Occasionally needed to compile case
- -- statements, as the uniq for a local
- -- variable to hold the tag of a primop with
- -- algebraic result
+ bndr -- binds the result of evaluating the scrutinee
+
+ SRT -- The SRT for the continuation
(GenStgCaseAlts bndr occ)
\end{code}
\begin{code}
| StgSCC
- Type -- the type of the body
CostCentre -- label of SCC expression
(GenStgExpr bndr occ) -- scc expression
-- end of GenStgExpr
\begin{code}
data GenStgRhs bndr occ
= StgRhsClosure
- CostCentre -- cost centre to be attached (default is CCC)
+ CostCentreStack -- CCS to be attached (default is CurrentCCS)
StgBinderInfo -- Info about how this binder is used (see below)
+ SRT -- The closures's SRT
[occ] -- non-global free vars; a list, rather than
-- a set, because order is important
UpdateFlag -- ReEntrant | Updatable | SingleEntry
[bndr] -- arguments; if empty, then not a function;
- -- as above, order is important
+ -- as above, order is important.
(GenStgExpr bndr occ) -- body
\end{code}
An example may be in order. Consider:
The second flavour of right-hand-side is for constructors (simple but important):
\begin{code}
| StgRhsCon
- CostCentre -- Cost centre to be attached (default is CCC).
+ CostCentreStack -- CCS to be attached (default is CurrentCCS).
-- Top-level (static) ones will end up with
- -- DontCareCC, because we don't count static
- -- data in heap profiles, and we don't set CCC
+ -- DontCareCCS, because we don't count static
+ -- data in heap profiles, and we don't set CCCS
-- from static closure.
- Id -- constructor
+ DataCon -- constructor
[GenStgArg occ] -- args
\end{code}
\begin{code}
data GenStgCaseAlts bndr occ
= StgAlgAlts Type -- so we can find out things about constructor family
- [(Id, -- alts: data constructor,
+ [(DataCon, -- alts: data constructor,
[bndr], -- constructor's parameters,
[Bool], -- "use mask", same length as
-- parameters; a True in a
data GenStgCaseDefault bndr occ
= StgNoDefault -- small con family: all
-- constructor accounted for
- | StgBindDefault bndr -- form: var -> expr
- Bool -- True <=> var is used in rhs
- -- i.e., False <=> "_ -> expr"
- (GenStgExpr bndr occ)
+ | StgBindDefault (GenStgExpr bndr occ)
\end{code}
%************************************************************************
data UpdateFlag = ReEntrant | Updatable | SingleEntry
instance Outputable UpdateFlag where
- ppr sty u
- = ppChar (case u of { ReEntrant -> 'r'; Updatable -> 'u'; SingleEntry -> 's' })
+ ppr u
+ = char (case u of { ReEntrant -> 'r'; Updatable -> 'u'; SingleEntry -> 's' })
+
+isUpdatable ReEntrant = False
+isUpdatable SingleEntry = False
+isUpdatable Updatable = True
+\end{code}
+
+%************************************************************************
+%* *
+\subsubsection[Static Reference Tables]{@SRT@}
+%* *
+%************************************************************************
+
+There is one SRT per top-level function group. Each local binding and
+case expression within this binding group has a subrange of the whole
+SRT, expressed as an offset and length.
+
+\begin{code}
+data SRT = NoSRT
+ | SRT !Int{-offset-} !Int{-length-}
+
+noSRT :: SRT
+noSRT = NoSRT
+
+pprSRT (NoSRT) = ptext SLIT("_no_srt_")
+pprSRT (SRT off len) = parens (ppr off <> comma <> ppr len)
\end{code}
%************************************************************************
hoping he likes terminators instead... Ditto for case alternatives.
\begin{code}
-pprStgBinding :: (Outputable bndr, Outputable bdee, Ord bdee) =>
- PprStyle -> GenStgBinding bndr bdee -> Pretty
-
-pprStgBinding sty (StgNonRec bndr rhs)
- = ppHang (ppCat [ppr sty bndr, ppEquals])
- 4 (ppBeside (ppr sty rhs) ppSemi)
+pprGenStgBinding :: (Outputable bndr, Outputable bdee, Ord bdee)
+ => GenStgBinding bndr bdee -> SDoc
-pprStgBinding sty (StgCoerceBinding bndr occ)
- = ppHang (ppCat [ppr sty bndr, ppEquals, ppStr "{-Coerce-}"])
- 4 (ppBeside (ppr sty occ) ppSemi)
+pprGenStgBinding (StgNonRec bndr rhs)
+ = hang (hsep [ppr bndr, equals])
+ 4 ((<>) (ppr rhs) semi)
-pprStgBinding sty (StgRec pairs)
- = ppAboves ((ifPprDebug sty (ppStr "{- StgRec -}")) :
- (map (ppr_bind sty) pairs))
+pprGenStgBinding (StgRec pairs)
+ = vcat ((ifPprDebug (ptext SLIT("{- StgRec (begin) -}"))) :
+ (map (ppr_bind) pairs) ++ [(ifPprDebug (ptext SLIT("{- StgRec (end) -}")))])
where
- ppr_bind sty (bndr, expr)
- = ppHang (ppCat [ppr sty bndr, ppEquals])
- 4 (ppBeside (ppr sty expr) ppSemi)
+ ppr_bind (bndr, expr)
+ = hang (hsep [ppr bndr, equals])
+ 4 ((<>) (ppr expr) semi)
+
+pprStgBinding :: StgBinding -> SDoc
+pprStgBinding bind = pprGenStgBinding bind
+
+pprStgBindings :: [StgBinding] -> SDoc
+pprStgBindings binds = vcat (map pprGenStgBinding binds)
+
+pprGenStgBindingWithSRT
+ :: (Outputable bndr, Outputable bdee, Ord bdee)
+ => (GenStgBinding bndr bdee,[Id]) -> SDoc
+
+pprGenStgBindingWithSRT (bind,srt)
+ = vcat [ pprGenStgBinding bind,
+ ptext SLIT("SRT: ") <> ppr srt ]
-pprPlainStgBinding :: PprStyle -> StgBinding -> Pretty
-pprPlainStgBinding sty b = pprStgBinding sty b
+pprStgBindingsWithSRTs :: [(StgBinding,[Id])] -> SDoc
+pprStgBindingsWithSRTs binds = vcat (map pprGenStgBindingWithSRT binds)
\end{code}
\begin{code}
instance (Outputable bndr, Outputable bdee, Ord bdee)
=> Outputable (GenStgBinding bndr bdee) where
- ppr = pprStgBinding
+ ppr = pprGenStgBinding
instance (Outputable bndr, Outputable bdee, Ord bdee)
=> Outputable (GenStgExpr bndr bdee) where
instance (Outputable bndr, Outputable bdee, Ord bdee)
=> Outputable (GenStgRhs bndr bdee) where
- ppr sty rhs = pprStgRhs sty rhs
+ ppr rhs = pprStgRhs rhs
\end{code}
\begin{code}
-pprStgArg :: (Outputable bdee) => PprStyle -> GenStgArg bdee -> Pretty
+pprStgArg :: (Outputable bdee) => GenStgArg bdee -> SDoc
-pprStgArg sty (StgVarArg var) = ppr sty var
-pprStgArg sty (StgLitArg lit) = ppr sty lit
+pprStgArg (StgVarArg var) = ppr var
+pprStgArg (StgConArg con) = ppr con
\end{code}
\begin{code}
-pprStgExpr :: (Outputable bndr, Outputable bdee, Ord bdee) =>
- PprStyle -> GenStgExpr bndr bdee -> Pretty
+pprStgExpr :: (Outputable bndr, Outputable bdee, Ord bdee)
+ => GenStgExpr bndr bdee -> SDoc
-- special case
-pprStgExpr sty (StgApp func [] lvs)
- = ppBeside (ppr sty func) (pprStgLVs sty lvs)
+pprStgExpr (StgApp func []) = ppr func
-- general case
-pprStgExpr sty (StgApp func args lvs)
- = ppHang (ppBeside (ppr sty func) (pprStgLVs sty lvs))
- 4 (ppSep (map (ppr sty) args))
+pprStgExpr (StgApp func args)
+ = hang (ppr func)
+ 4 (sep (map (ppr) args))
\end{code}
\begin{code}
-pprStgExpr sty (StgCon con args lvs)
- = ppBesides [ ppBeside (ppr sty con) (pprStgLVs sty lvs),
- ppStr "! [", interppSP sty args, ppStr "]" ]
-
-pprStgExpr sty (StgPrim op args lvs)
- = ppBesides [ ppr sty op, ppChar '#', pprStgLVs sty lvs,
- ppStr " [", interppSP sty args, ppStr "]" ]
+pprStgExpr (StgCon con args _)
+ = hsep [ ppr con, brackets (interppSP args)]
\end{code}
\begin{code}
--
-- Very special! Suspicious! (SLPJ)
-pprStgExpr sty (StgLet (StgNonRec bndr (StgRhsClosure cc bi free_vars upd_flag args rhs))
+pprStgExpr (StgLet (StgNonRec bndr (StgRhsClosure cc bi srt free_vars upd_flag args rhs))
expr@(StgLet _ _))
- = ppAbove
- (ppHang (ppBesides [ppStr "let { ", ppr sty bndr, ppStr " = ",
- ppStr (showCostCentre sty True{-as string-} cc),
- pp_binder_info sty bi,
- ppStr " [", ifPprDebug sty (interppSP sty free_vars), ppStr "] \\",
- ppr sty upd_flag, ppStr " [",
- interppSP sty args, ppStr "]"])
- 8 (ppSep [ppCat [ppr sty rhs, ppStr "} in"]]))
- (ppr sty expr)
+ = ($$)
+ (hang (hcat [ptext SLIT("let { "), ppr bndr, ptext SLIT(" = "),
+ ppr cc,
+ pp_binder_info bi,
+ ptext SLIT(" ["), ifPprDebug (interppSP free_vars), ptext SLIT("] \\"),
+ ppr upd_flag, ptext SLIT(" ["),
+ interppSP args, char ']'])
+ 8 (sep [hsep [ppr rhs, ptext SLIT("} in")]]))
+ (ppr expr)
-- special case: let ... in let ...
-pprStgExpr sty (StgLet bind expr@(StgLet _ _))
- = ppAbove
- (ppSep [ppHang (ppStr "let {") 2 (ppCat [pprStgBinding sty bind, ppStr "} in"])])
- (ppr sty expr)
+pprStgExpr (StgLet bind expr@(StgLet _ _))
+ = ($$)
+ (sep [hang (ptext SLIT("let {")) 2 (hsep [pprGenStgBinding bind, ptext SLIT("} in")])])
+ (ppr expr)
-- general case
-pprStgExpr sty (StgLet bind expr)
- = ppSep [ppHang (ppStr "let {") 2 (pprStgBinding sty bind),
- ppHang (ppStr "} in ") 2 (ppr sty expr)]
-
-pprStgExpr sty (StgLetNoEscape lvs_whole lvs_rhss bind expr)
- = ppSep [ppHang (ppStr "let-no-escape {")
- 2 (pprStgBinding sty bind),
- ppHang (ppBeside (ppStr "} in ")
- (ifPprDebug sty (
- ppNest 4 (
- ppBesides [ppStr "-- lvs: [", interppSP sty (uniqSetToList lvs_whole),
- ppStr "]; rhs lvs: [", interppSP sty (uniqSetToList lvs_rhss),
- ppStr "]"]))))
- 2 (ppr sty expr)]
+pprStgExpr (StgLet bind expr)
+ = sep [hang (ptext SLIT("let {")) 2 (pprGenStgBinding bind),
+ hang (ptext SLIT("} in ")) 2 (ppr expr)]
+
+pprStgExpr (StgLetNoEscape lvs_whole lvs_rhss bind expr)
+ = sep [hang (ptext SLIT("let-no-escape {"))
+ 2 (pprGenStgBinding bind),
+ hang ((<>) (ptext SLIT("} in "))
+ (ifPprDebug (
+ nest 4 (
+ hcat [ptext SLIT("-- lvs: ["), interppSP (uniqSetToList lvs_whole),
+ ptext SLIT("]; rhs lvs: ["), interppSP (uniqSetToList lvs_rhss),
+ char ']']))))
+ 2 (ppr expr)]
\end{code}
\begin{code}
-pprStgExpr sty (StgSCC ty cc expr)
- = ppSep [ ppCat [ppStr "_scc_", ppStr (showCostCentre sty True{-as string-} cc)],
- pprStgExpr sty expr ]
+pprStgExpr (StgSCC cc expr)
+ = sep [ hsep [ptext SLIT("_scc_"), ppr cc],
+ pprStgExpr expr ]
\end{code}
\begin{code}
-pprStgExpr sty (StgCase expr lvs_whole lvs_rhss uniq alts)
- = ppSep [ppSep [ppStr "case",
- ppNest 4 (ppCat [pprStgExpr sty expr,
- ifPprDebug sty (ppBeside (ppStr "::") (pp_ty alts))]),
- ppStr "of {"],
- ifPprDebug sty (
- ppNest 4 (
- ppBesides [ppStr "-- lvs: [", interppSP sty (uniqSetToList lvs_whole),
- ppStr "]; rhs lvs: [", interppSP sty (uniqSetToList lvs_rhss),
- ppStr "]; uniq: ", pprUnique uniq])),
- ppNest 2 (ppr_alts sty alts),
- ppStr "}"]
+pprStgExpr (StgCase expr lvs_whole lvs_rhss bndr srt alts)
+ = sep [sep [ptext SLIT("case"),
+ nest 4 (hsep [pprStgExpr expr,
+ ifPprDebug (ptext SLIT("::") <> pp_ty alts)]),
+ ptext SLIT("of"), ppr bndr, char '{'],
+ ifPprDebug (
+ nest 4 (
+ hcat [ptext SLIT("-- lvs: ["), interppSP (uniqSetToList lvs_whole),
+ ptext SLIT("]; rhs lvs: ["), interppSP (uniqSetToList lvs_rhss),
+ ptext SLIT("]; "),
+ pprMaybeSRT srt])),
+ nest 2 (ppr_alts alts),
+ char '}']
where
- ppr_default sty StgNoDefault = ppNil
- ppr_default sty (StgBindDefault bndr used expr)
- = ppHang (ppCat [pp_binder, ppStr "->"]) 4 (ppr sty expr)
- where
- pp_binder = if used then ppr sty bndr else ppChar '_'
+ ppr_default StgNoDefault = empty
+ ppr_default (StgBindDefault expr)
+ = hang (hsep [ptext SLIT("DEFAULT"), ptext SLIT("->")]) 4 (ppr expr)
- pp_ty (StgAlgAlts ty _ _) = ppr sty ty
- pp_ty (StgPrimAlts ty _ _) = ppr sty ty
+ pp_ty (StgAlgAlts ty _ _) = ppr ty
+ pp_ty (StgPrimAlts ty _ _) = ppr ty
- ppr_alts sty (StgAlgAlts ty alts deflt)
- = ppAboves [ ppAboves (map (ppr_bxd_alt sty) alts),
- ppr_default sty deflt ]
+ ppr_alts (StgAlgAlts ty alts deflt)
+ = vcat [ vcat (map (ppr_bxd_alt) alts),
+ ppr_default deflt ]
where
- ppr_bxd_alt sty (con, params, use_mask, expr)
- = ppHang (ppCat [pprNonSym sty con, interppSP sty params, ppStr "->"])
- 4 (ppBeside (ppr sty expr) ppSemi)
+ ppr_bxd_alt (con, params, use_mask, expr)
+ = hang (hsep [ppr con, interppSP params, ptext SLIT("->")])
+ 4 ((<>) (ppr expr) semi)
- ppr_alts sty (StgPrimAlts ty alts deflt)
- = ppAboves [ ppAboves (map (ppr_ubxd_alt sty) alts),
- ppr_default sty deflt ]
+ ppr_alts (StgPrimAlts ty alts deflt)
+ = vcat [ vcat (map (ppr_ubxd_alt) alts),
+ ppr_default deflt ]
where
- ppr_ubxd_alt sty (lit, expr)
- = ppHang (ppCat [ppr sty lit, ppStr "->"])
- 4 (ppBeside (ppr sty expr) ppSemi)
+ ppr_ubxd_alt (lit, expr)
+ = hang (hsep [ppr lit, ptext SLIT("->")])
+ 4 ((<>) (ppr expr) semi)
\end{code}
\begin{code}
--- pprStgLVs :: PprStyle -> GenStgLiveVars occ -> Pretty
-
-pprStgLVs PprForUser lvs = ppNil
-
-pprStgLVs sty lvs
- = if isEmptyUniqSet lvs then
- ppNil
+pprStgLVs :: Outputable occ => GenStgLiveVars occ -> SDoc
+pprStgLVs lvs
+ = getPprStyle $ \ sty ->
+ if userStyle sty || isEmptyUniqSet lvs then
+ empty
else
- ppBesides [ppStr "{-lvs:", interpp'SP sty (uniqSetToList lvs), ppStr "-}"]
+ hcat [text "{-lvs:", interpp'SP (uniqSetToList lvs), text "-}"]
\end{code}
\begin{code}
-pprStgRhs :: (Outputable bndr, Outputable bdee, Ord bdee) =>
- PprStyle -> GenStgRhs bndr bdee -> Pretty
+pprStgRhs :: (Outputable bndr, Outputable bdee, Ord bdee)
+ => GenStgRhs bndr bdee -> SDoc
-- special case
-pprStgRhs sty (StgRhsClosure cc bi [free_var] upd_flag [{-no args-}] (StgApp func [] lvs))
- = ppBesides [ ppStr (showCostCentre sty True{-as String-} cc),
- pp_binder_info sty bi,
- ppStr " [", ifPprDebug sty (ppr sty free_var),
- ppStr "] \\", ppr sty upd_flag, ppStr " [] ", ppr sty func ]
+pprStgRhs (StgRhsClosure cc bi srt [free_var] upd_flag [{-no args-}] (StgApp func []))
+ = hcat [ ppr cc,
+ pp_binder_info bi,
+ pprMaybeSRT srt,
+ brackets (ifPprDebug (ppr free_var)),
+ ptext SLIT(" \\"), ppr upd_flag, ptext SLIT(" [] "), ppr func ]
+
-- general case
-pprStgRhs sty (StgRhsClosure cc bi free_vars upd_flag args body)
- = ppHang (ppBesides [ ppStr (showCostCentre sty True{-as String-} cc),
- pp_binder_info sty bi,
- ppStr " [", ifPprDebug sty (interppSP sty free_vars),
- ppStr "] \\", ppr sty upd_flag, ppStr " [", interppSP sty args, ppStr "]"])
- 4 (ppr sty body)
+pprStgRhs (StgRhsClosure cc bi srt free_vars upd_flag args body)
+ = hang (hcat [ppr cc,
+ pp_binder_info bi,
+ pprMaybeSRT srt,
+ brackets (ifPprDebug (interppSP free_vars)),
+ ptext SLIT(" \\"), ppr upd_flag, brackets (interppSP args)])
+ 4 (ppr body)
+
+pprStgRhs (StgRhsCon cc con args)
+ = hcat [ ppr cc,
+ space, ppr con, ptext SLIT("! "), brackets (interppSP args)]
-pprStgRhs sty (StgRhsCon cc con args)
- = ppBesides [ ppStr (showCostCentre sty True{-as String-} cc),
- ppSP, ppr sty con, ppStr "! [", interppSP sty args, ppStr "]" ]
+pprMaybeSRT (NoSRT) = empty
+pprMaybeSRT srt = ptext SLIT(" srt: ") <> pprSRT srt
--------------
-pp_binder_info PprForUser _ = ppNil
-pp_binder_info sty NoStgBinderInfo = ppNil
+pp_binder_info NoStgBinderInfo = empty
-- cases so boring that we print nothing
-pp_binder_info sty (StgBinderInfo True b c d e) = ppNil
+pp_binder_info (StgBinderInfo True b c d e) = empty
-- general case
-pp_binder_info sty (StgBinderInfo a b c d e)
- = ppBesides [ppChar '(', ppInterleave ppComma (map pp_bool [a,b,c,d,e]), ppChar ')']
- where
- pp_bool x = ppr (panic "pp_bool") x
+pp_binder_info (StgBinderInfo a b c d e)
+ = getPprStyle $ \ sty ->
+ if userStyle sty then
+ empty
+ else
+ parens (hsep (punctuate comma (map ppr [a,b,c,d,e])))
\end{code}
Collect @IdInfo@ stuff that is most easily just snaffled straight
stgArity :: StgRhs -> Int
stgArity (StgRhsCon _ _ _) = 0 -- it's a constructor, fully applied
-stgArity (StgRhsClosure _ _ _ _ args _ ) = length args
+stgArity (StgRhsClosure _ _ _ _ _ args _ ) = length args
\end{code}
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