#include "HsVersions.h"
+-- Kludge (??) so that CgExpr is reached via at least one non-SOURCE
+-- import. Before, that wasn't the case, and CM therefore didn't
+-- bother to compile it.
+import CgExpr ( {-NOTHING!-} ) -- DO NOT DELETE THIS IMPORT
+
import StgSyn
import CgMonad
import AbsCSyn
import PprAbsC ( dumpRealC )
import AbsCUtils ( mkAbstractCs, flattenAbsC )
-import CgBindery ( CgIdInfo, addBindC, addBindsC )
+import CgBindery ( CgIdInfo, addBindC, addBindsC, getCAddrModeAndInfo )
import CgClosure ( cgTopRhsClosure )
import CgCon ( cgTopRhsCon )
import CgConTbls ( genStaticConBits )
import ClosureInfo ( mkClosureLFInfo )
-import CmdLineOpts ( opt_SccProfilingOn, opt_EnsureSplittableC,
- opt_D_dump_absC
- )
+import CmdLineOpts ( DynFlags, DynFlag(..),
+ opt_SccProfilingOn, opt_EnsureSplittableC )
import CostCentre ( CostCentre, CostCentreStack )
-import Id ( Id, idName )
-import Module ( Module, moduleString, moduleName,
- ModuleName )
-import PrimRep ( getPrimRepSize, PrimRep(..) )
-import Type ( Type )
+import Id ( Id, idName, setIdName )
+import Name ( globaliseName )
+import Module ( Module )
+import PrimRep ( PrimRep(..) )
import TyCon ( TyCon, isDataTyCon )
-import Class ( Class, classTyCon )
import BasicTypes ( TopLevelFlag(..) )
import UniqSupply ( mkSplitUniqSupply )
-import ErrUtils ( dumpIfSet )
-import Util
+import ErrUtils ( dumpIfSet_dyn, showPass )
import Panic ( assertPanic )
+
+#ifdef DEBUG
+import Outputable
+#endif
\end{code}
\begin{code}
-
-
-codeGen :: Module -- Module name
- -> [ModuleName] -- Import names
+codeGen :: DynFlags
+ -> Module -- Module name
+ -> [Module] -- Import names
-> ([CostCentre], -- Local cost-centres needing declaring/registering
[CostCentre], -- "extern" cost-centres needing declaring
[CostCentreStack]) -- Pre-defined "singleton" cost centre stacks
-> [Id] -- foreign-exported binders
- -> [TyCon] -> [Class] -- Local tycons and classes
+ -> [TyCon] -- Local tycons, including ones from classes
-> [(StgBinding,[Id])] -- Bindings to convert, with SRTs
-> IO AbstractC -- Output
-codeGen mod_name imported_modules cost_centre_info fe_binders
- tycons classes stg_binds
- = mkSplitUniqSupply 'f' >>= \ fl_uniqs -> -- absC flattener
- let
- datatype_stuff = genStaticConBits cinfo data_tycons
- code_stuff = initC cinfo (cgTopBindings maybe_split stg_binds)
- init_stuff = mkModuleInit fe_binders mod_name imported_modules
- cost_centre_info
-
- abstractC = mkAbstractCs [ maybe_split,
- init_stuff,
- code_stuff,
- datatype_stuff]
+codeGen dflags mod_name imported_modules cost_centre_info fe_binders
+ tycons stg_binds
+ = do { showPass dflags "CodeGen"
+
+ ; fl_uniqs <- mkSplitUniqSupply 'f'
+ ; let
+ datatype_stuff = genStaticConBits cinfo data_tycons
+ code_stuff = initC cinfo (mapCs cgTopBinding stg_binds)
+ init_stuff = mkModuleInit fe_binders mod_name imported_modules
+ cost_centre_info
+
+ abstractC = mkAbstractCs [ maybeSplitCode,
+ init_stuff,
+ code_stuff,
+ datatype_stuff]
-- Put datatype_stuff after code_stuff, because the
-- datatype closure table (for enumeration types)
-- to (say) PrelBase_True_closure, which is defined in code_stuff
- flat_abstractC = flattenAbsC fl_uniqs abstractC
- in
- dumpIfSet opt_D_dump_absC "Abstract C" (dumpRealC abstractC) >>
- return flat_abstractC
+ flat_abstractC = flattenAbsC fl_uniqs abstractC
+ ; dumpIfSet_dyn dflags Opt_D_dump_absC "Abstract C" (dumpRealC abstractC)
+ ; return flat_abstractC
+ }
where
- data_tycons = filter isDataTyCon (tycons ++ map classTyCon classes)
- -- Generate info tables for the data constrs arising
- -- from class decls as well
+ data_tycons = filter isDataTyCon tycons
- maybe_split = if opt_EnsureSplittableC
- then CSplitMarker
- else AbsCNop
cinfo = MkCompInfo mod_name
\end{code}
mkModuleInit
:: [Id] -- foreign exported functions
-> Module -- module name
- -> [ModuleName] -- import names
+ -> [Module] -- import names
-> ([CostCentre], -- cost centre info
[CostCentre],
[CostCentreStack])
(cc_decls, cc_regs) = mkCostCentreStuff cost_centre_info
- mk_import_register import_name
- = CMacroStmt REGISTER_IMPORT [
- CLbl (mkModuleInitLabel import_name) AddrRep
+ mk_import_register imp =
+ CMacroStmt REGISTER_IMPORT [
+ CLbl (mkModuleInitLabel imp) AddrRep
]
register_imports = map mk_import_register imps
in
mkAbstractCs [
cc_decls,
- CModuleInitBlock (mkModuleInitLabel (Module.moduleName mod))
+ CModuleInitBlock (mkModuleInitLabel mod)
(mkAbstractCs (register_fes ++
cc_regs :
register_imports))
%* *
%************************************************************************
-@cgTopBindings@ is only used for top-level bindings, since they need
+@cgTopBinding@ is only used for top-level bindings, since they need
to be allocated statically (not in the heap) and need to be labelled.
No unboxed bindings can happen at top level.
variable.
\begin{code}
-cgTopBindings :: AbstractC -> [(StgBinding,[Id])] -> Code
-
-cgTopBindings split bindings = mapCs (cgTopBinding split) bindings
-
-cgTopBinding :: AbstractC -> (StgBinding,[Id]) -> Code
-
-cgTopBinding split ((StgNonRec name rhs), srt)
- = absC split `thenC`
- absC (mkSRT srt_label srt) `thenC`
+cgTopBinding :: (StgBinding,[Id]) -> Code
+cgTopBinding (StgNonRec srt_info id rhs, srt)
+ = absC maybeSplitCode `thenC`
+ maybeGlobaliseId id `thenFC` \ id' ->
+ let
+ srt_label = mkSRTLabel (idName id')
+ in
+ mkSRT srt_label srt [] `thenC`
setSRTLabel srt_label (
- cgTopRhs name rhs `thenFC` \ (name, info) ->
- addBindC name info
+ cgTopRhs id' rhs srt_info `thenFC` \ (id, info) ->
+ addBindC id info
)
- where
- srt_label = mkSRTLabel (idName name)
-cgTopBinding split ((StgRec pairs@((name,rhs):_)), srt)
- = absC split `thenC`
- absC (mkSRT srt_label srt) `thenC`
+cgTopBinding (StgRec srt_info pairs, srt)
+ = absC maybeSplitCode `thenC`
+ let
+ (bndrs, rhss) = unzip pairs
+ in
+ mapFCs maybeGlobaliseId bndrs `thenFC` \ bndrs'@(id:_) ->
+ let
+ srt_label = mkSRTLabel (idName id)
+ pairs' = zip bndrs' rhss
+ in
+ mkSRT srt_label srt bndrs' `thenC`
setSRTLabel srt_label (
- fixC (\ new_binds -> addBindsC new_binds `thenC`
- mapFCs ( \ (b,e) -> cgTopRhs b e ) pairs
- ) `thenFC` \ new_binds ->
- addBindsC new_binds
+ fixC (\ new_binds ->
+ addBindsC new_binds `thenC`
+ mapFCs ( \ (b,e) -> cgTopRhs b e srt_info ) pairs'
+ ) `thenFC` \ new_binds -> nopC
)
+
+mkSRT :: CLabel -> [Id] -> [Id] -> Code
+mkSRT lbl [] these = nopC
+mkSRT lbl ids these
+ = mapFCs remap ids `thenFC` \ ids ->
+ absC (CSRT lbl (map (mkClosureLabel . idName) ids))
where
- srt_label = mkSRTLabel (idName name)
+ -- sigh, better map all the ids against the environment in case they've
+ -- been globalised (see maybeGlobaliseId below).
+ remap id = case filter (==id) these of
+ [] -> getCAddrModeAndInfo id
+ `thenFC` \ (id, _, _) -> returnFC id
+ (id':_) -> returnFC id'
+
+-- if we're splitting the object, we need to globalise all the top-level names
+-- (and then make sure we only use the globalised one in any C label we use
+-- which refers to this name).
+maybeGlobaliseId :: Id -> FCode Id
+maybeGlobaliseId id
+ = moduleName `thenFC` \ mod ->
+ let
+ name = idName id
+
+ -- globalise the name for -split-objs, if necessary
+ real_name | opt_EnsureSplittableC = globaliseName name mod
+ | otherwise = name
+
+ id' = setIdName id real_name
+ in
+ returnFC id'
-mkSRT :: CLabel -> [Id] -> AbstractC
-mkSRT lbl [] = AbsCNop
-mkSRT lbl ids = CSRT lbl (map (mkClosureLabel . idName) ids)
+maybeSplitCode
+ | opt_EnsureSplittableC = CSplitMarker
+ | otherwise = AbsCNop
-- Urgh! I tried moving the forkStatics call from the rhss of cgTopRhs
-- to enclose the listFCs in cgTopBinding, but that tickled the
-- statics "error" call in initC. I DON'T UNDERSTAND WHY!
-cgTopRhs :: Id -> StgRhs -> FCode (Id, CgIdInfo)
+cgTopRhs :: Id -> StgRhs -> SRT -> FCode (Id, CgIdInfo)
-- the Id is passed along for setting up a binding...
-cgTopRhs bndr (StgRhsCon cc con args)
- = forkStatics (cgTopRhsCon bndr con args)
+cgTopRhs bndr (StgRhsCon cc con args) srt
+ = maybeGlobaliseId bndr `thenFC` \ bndr' ->
+ forkStatics (cgTopRhsCon bndr con args)
-cgTopRhs bndr (StgRhsClosure cc bi srt fvs upd_flag args body)
- = ASSERT(null fvs) -- There should be no free variables
- getSRTLabel `thenFC` \srt_label ->
- let lf_info =
- mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args srt_label srt
+cgTopRhs bndr (StgRhsClosure cc bi fvs upd_flag args body) srt
+ = -- There should be no free variables
+ ASSERT(null fvs)
+ let
+ lf_info = mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args
in
- forkStatics (cgTopRhsClosure bndr cc bi args body lf_info)
+ maybeGlobaliseId bndr `thenFC` \ bndr' ->
+ forkStatics (cgTopRhsClosure bndr' cc bi srt args body lf_info)
\end{code}
projects / ghc-hetmet.git / blobdiff