-- bother to compile it.
import CgExpr ( {-NOTHING!-} ) -- DO NOT DELETE THIS IMPORT
+import DriverState ( v_Build_tag )
import StgSyn
import CgMonad
import AbsCSyn
-import CLabel ( CLabel, mkSRTLabel, mkClosureLabel, mkModuleInitLabel )
+import PrelNames ( gHC_PRIM )
+import CLabel ( CLabel, mkSRTLabel, mkClosureLabel,
+ mkPlainModuleInitLabel, mkModuleInitLabel )
import PprAbsC ( dumpRealC )
import AbsCUtils ( mkAbstractCs, flattenAbsC )
import ClosureInfo ( mkClosureLFInfo )
import CmdLineOpts ( DynFlags, DynFlag(..),
opt_SccProfilingOn, opt_EnsureSplittableC )
-import CostCentre ( CostCentre, CostCentreStack )
+import CostCentre ( CollectedCCs )
import Id ( Id, idName, setIdName )
-import Name ( globaliseName )
+import Name ( nameSrcLoc, nameOccName, nameUnique, isInternalName, mkExternalName )
+import OccName ( mkLocalOcc )
import Module ( Module )
import PrimRep ( PrimRep(..) )
import TyCon ( TyCon, isDataTyCon )
-import BasicTypes ( TopLevelFlag(..) )
+import BasicTypes ( TopLevelFlag(..), Version )
import UniqSupply ( mkSplitUniqSupply )
import ErrUtils ( dumpIfSet_dyn, showPass )
import Panic ( assertPanic )
#ifdef DEBUG
-import Id ( idCafInfo )
-import IdInfo ( mayHaveCafRefs )
import Outputable
#endif
+
+import IOExts ( readIORef )
\end{code}
\begin{code}
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
+ -> CollectedCCs -- (Local/global) cost-centres needing declaring/registering.
-> [Id] -- foreign-exported binders
-> [TyCon] -- Local tycons, including ones from classes
-> [(StgBinding,[Id])] -- Bindings to convert, with SRTs
codeGen dflags mod_name imported_modules cost_centre_info fe_binders
tycons stg_binds
- = do { showPass dflags "CodeGen"
+ = do
+ showPass dflags "CodeGen"
+ fl_uniqs <- mkSplitUniqSupply 'f'
+ way <- readIORef v_Build_tag
+
+ let
+ data_tycons = filter isDataTyCon tycons
+ cinfo = MkCompInfo mod_name
- ; 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
+ init_stuff = mkModuleInit fe_binders mod_name way
+ 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
+ -- datatype closure table (for enumeration types) to
+ -- (say) PrelBase_True_closure, which is defined in
+ -- code_stuff
- 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
+ dumpIfSet_dyn dflags Opt_D_dump_absC "Abstract C" (dumpRealC abstractC)
- cinfo = MkCompInfo mod_name
+ return $! flattenAbsC fl_uniqs abstractC
\end{code}
%************************************************************************
mkModuleInit
:: [Id] -- foreign exported functions
-> Module -- module name
+ -> String -- the "way"
-> [Module] -- import names
- -> ([CostCentre], -- cost centre info
- [CostCentre],
- [CostCentreStack])
+ -> CollectedCCs -- cost centre info
-> AbstractC
-mkModuleInit fe_binders mod imps cost_centre_info
+mkModuleInit fe_binders mod way imps cost_centre_info
= let
register_fes =
map (\f -> CMacroStmt REGISTER_FOREIGN_EXPORT [f]) fe_labels
(cc_decls, cc_regs) = mkCostCentreStuff cost_centre_info
- mk_import_register imp =
- CMacroStmt REGISTER_IMPORT [
- CLbl (mkModuleInitLabel imp) AddrRep
- ]
+ -- we don't want/need to init GHC.Prim, so filter it out
+ mk_import_register imp
+ | imp == gHC_PRIM = AbsCNop
+ | otherwise = CMacroStmt REGISTER_IMPORT [
+ CLbl (mkModuleInitLabel imp way) AddrRep
+ ]
register_imports = map mk_import_register imps
in
mkAbstractCs [
cc_decls,
- CModuleInitBlock (mkModuleInitLabel mod)
+ CModuleInitBlock (mkPlainModuleInitLabel mod)
+ (mkModuleInitLabel mod way)
(mkAbstractCs (register_fes ++
cc_regs :
register_imports))
[ register_ccs, register_cc_stacks ]
where
mk_register cc
- = CCallProfCCMacro SLIT("REGISTER_CC") [mkCCostCentre cc]
+ = CCallProfCCMacro FSLIT("REGISTER_CC") [mkCCostCentre cc]
mk_register_ccs ccs
- = CCallProfCCMacro SLIT("REGISTER_CCS") [mkCCostCentreStack ccs]
+ = CCallProfCCMacro FSLIT("REGISTER_CCS") [mkCCostCentreStack ccs]
\end{code}
%************************************************************************
\begin{code}
cgTopBinding :: (StgBinding,[Id]) -> Code
-cgTopBinding (StgNonRec id rhs, srt)
+cgTopBinding (StgNonRec srt_info id rhs, srt)
= absC maybeSplitCode `thenC`
- maybeGlobaliseId id `thenFC` \ id' ->
+ maybeExternaliseId id `thenFC` \ id' ->
let
srt_label = mkSRTLabel (idName id')
in
mkSRT srt_label srt [] `thenC`
setSRTLabel srt_label (
- cgTopRhs id' rhs `thenFC` \ (id, info) ->
- addBindC id info
+ cgTopRhs id' rhs srt_info `thenFC` \ (id, info) ->
+ addBindC id info -- Add the un-externalised Id to the envt, so we
+ -- find it when we look up occurrences
)
-cgTopBinding (StgRec pairs, srt)
+cgTopBinding (StgRec srt_info pairs, srt)
= absC maybeSplitCode `thenC`
let
(bndrs, rhss) = unzip pairs
in
- mapFCs maybeGlobaliseId bndrs `thenFC` \ bndrs'@(id:_) ->
+ mapFCs maybeExternaliseId bndrs `thenFC` \ bndrs'@(id:_) ->
let
srt_label = mkSRTLabel (idName id)
pairs' = zip bndrs' rhss
setSRTLabel srt_label (
fixC (\ new_binds ->
addBindsC new_binds `thenC`
- mapFCs ( \ (b,e) -> cgTopRhs b e ) pairs'
+ mapFCs ( \ (b,e) -> cgTopRhs b e srt_info ) pairs'
) `thenFC` \ new_binds -> nopC
)
absC (CSRT lbl (map (mkClosureLabel . idName) ids))
where
-- sigh, better map all the ids against the environment in case they've
- -- been globalised (see maybeGlobaliseId below).
+ -- been externalised (see maybeExternaliseId 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
+-- 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!
- -- globalise the name for -split-objs, if necessary
- real_name | opt_EnsureSplittableC = globaliseName name mod
- | otherwise = name
+cgTopRhs :: Id -> StgRhs -> SRT -> FCode (Id, CgIdInfo)
+ -- The Id is passed along for setting up a binding...
+ -- It's already been externalised if necessary
- id' = setIdName id real_name
- in
- returnFC id'
+cgTopRhs bndr (StgRhsCon cc con args) srt
+ = forkStatics (cgTopRhsCon bndr con args srt)
-maybeSplitCode
- | opt_EnsureSplittableC = CSplitMarker
- | otherwise = AbsCNop
+cgTopRhs bndr (StgRhsClosure cc bi fvs upd_flag args body) srt
+ = ASSERT(null fvs) -- There should be no free variables
+ let
+ lf_info = mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args
+ in
+ forkStatics (cgTopRhsClosure bndr cc bi srt args body lf_info)
+\end{code}
--- 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)
- -- the Id is passed along for setting up a binding...
+%************************************************************************
+%* *
+\subsection{Stuff to support splitting}
+%* *
+%************************************************************************
-cgTopRhs bndr (StgRhsCon cc con args)
- = maybeGlobaliseId bndr `thenFC` \ bndr' ->
- forkStatics (cgTopRhsCon bndr con args)
+If we're splitting the object, we need to externalise all the top-level names
+(and then make sure we only use the externalised one in any C label we use
+which refers to this name).
-cgTopRhs bndr (StgRhsClosure cc bi srt fvs upd_flag args body)
- = -- There should be no free variables
- ASSERT(null fvs)
- -- If the closure is a thunk, then the binder must be recorded as such.
- ASSERT2(not (isUpdatable upd_flag) || mayHaveCafRefs (idCafInfo bndr), ppr bndr)
+\begin{code}
+maybeExternaliseId :: Id -> FCode Id
+maybeExternaliseId id
+ | opt_EnsureSplittableC, -- Externalise the name for -split-objs
+ isInternalName name
+ = moduleName `thenFC` \ mod ->
+ returnFC (setIdName id (mkExternalName uniq mod new_occ (nameSrcLoc name)))
+ | otherwise
+ = returnFC id
+ where
+ name = idName id
+ uniq = nameUnique name
+ new_occ = mkLocalOcc uniq (nameOccName name)
+ -- We want to conjure up a name that can't clash with any
+ -- existing name. So we generate
+ -- Mod_$L243foo
+ -- where 243 is the unique.
- getSRTLabel `thenFC` \srt_label ->
- let lf_info =
- mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args srt_label srt
- in
- maybeGlobaliseId bndr `thenFC` \ bndr' ->
- forkStatics (cgTopRhsClosure bndr' cc bi args body lf_info)
+maybeSplitCode
+ | opt_EnsureSplittableC = CSplitMarker
+ | otherwise = AbsCNop
\end{code}
projects / ghc-hetmet.git / blobdiff