%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[CodeGen]{@CodeGen@: main module of the code generator}
%************************************************************************
\begin{code}
-#include "HsVersions.h"
-
module CodeGen ( codeGen ) where
-IMP_Ubiq(){-uitous-}
+#include "HsVersions.h"
import StgSyn
import CgMonad
import AbsCSyn
+import CLabel ( CLabel, mkSRTLabel, mkClosureLabel,
+ mkModuleInitLabel, labelDynamic )
-import AbsCUtils ( mkAbstractCs, mkAbsCStmts )
-import Bag ( foldBag )
-import CgBindery ( CgIdInfo )
+import PprAbsC ( dumpRealC )
+import AbsCUtils ( mkAbstractCs, flattenAbsC )
+import CgBindery ( CgIdInfo, addBindC, addBindsC )
import CgClosure ( cgTopRhsClosure )
import CgCon ( cgTopRhsCon )
import CgConTbls ( genStaticConBits )
import ClosureInfo ( mkClosureLFInfo )
-import CmdLineOpts ( opt_SccProfilingOn, opt_CompilingGhcInternals,
- opt_EnsureSplittableC, opt_SccGroup
- )
-import CStrings ( modnameToC )
-import FiniteMap ( FiniteMap )
-import Maybes ( maybeToBool )
+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 Util ( panic, assertPanic )
+import Type ( Type )
+import TyCon ( TyCon, isDataTyCon )
+import Class ( Class, classTyCon )
+import BasicTypes ( TopLevelFlag(..) )
+import UniqSupply ( mkSplitUniqSupply )
+import ErrUtils ( dumpIfSet_dyn )
+import Util
+import Panic ( assertPanic )
\end{code}
\begin{code}
-codeGen :: FAST_STRING -- module name
- -> ([CostCentre], -- local cost-centres needing declaring/registering
- [CostCentre]) -- "extern" cost-centres needing declaring
- -> [Module] -- import names
- -> [TyCon] -- tycons with data constructors to convert
- -> FiniteMap TyCon [(Bool, [Maybe Type])]
- -- tycon specialisation info
- -> [StgBinding] -- bindings to convert
- -> AbstractC -- output
-codeGen mod_name (local_CCs, extern_CCs) import_names gen_tycons tycon_specs stg_pgm
- = let
- doing_profiling = opt_SccProfilingOn
- compiling_prelude = opt_CompilingGhcInternals
- maybe_split = if opt_EnsureSplittableC
- then CSplitMarker
- else AbsCNop
- cinfo = MkCompInfo mod_name
+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
+ -> [(StgBinding,[Id])] -- Bindings to convert, with SRTs
+ -> IO AbstractC -- Output
+
+codeGen dflags 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]
+ -- 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
- if not doing_profiling then
- mkAbstractCs [
- genStaticConBits cinfo gen_tycons tycon_specs,
- initC cinfo (cgTopBindings maybe_split stg_pgm) ]
-
- else -- yes, cost-centre profiling:
- -- Besides the usual stuff, we must produce:
- --
- -- * Declarations for the cost-centres defined in this module;
- -- * Code to participate in "registering" all the cost-centres
- -- in the program (done at startup time when the pgm is run).
- --
- -- (The local cost-centres involved in this are passed
- -- into the code-generator, as are the imported-modules' names.)
- --
- -- Note: we don't register/etc if compiling Prelude bits.
-
- mkAbstractCs [
- if compiling_prelude
- then AbsCNop
- else mkAbstractCs [mkAbstractCs (map (CCostCentreDecl True) local_CCs),
- mkAbstractCs (map (CCostCentreDecl False) extern_CCs),
- mkCcRegister local_CCs import_names],
-
- genStaticConBits cinfo gen_tycons tycon_specs,
- initC cinfo (cgTopBindings maybe_split stg_pgm) ]
+ dumpIfSet_dyn dflags Opt_D_dump_absC "Abstract C" (dumpRealC abstractC) >>
+ return flat_abstractC
+
where
- -----------------
- grp_name = case opt_SccGroup of
- Just xx -> _PK_ xx
- Nothing -> mod_name -- default: module name
+ data_tycons = filter isDataTyCon (tycons ++ map classTyCon classes)
+ -- Generate info tables for the data constrs arising
+ -- from class decls as well
+
+ maybe_split = if opt_EnsureSplittableC
+ then CSplitMarker
+ else AbsCNop
+ cinfo = MkCompInfo mod_name
+\end{code}
+
+%************************************************************************
+%* *
+\subsection[codegen-init]{Module initialisation code}
+%* *
+%************************************************************************
+
+\begin{code}
+mkModuleInit
+ :: [Id] -- foreign exported functions
+ -> Module -- module name
+ -> [Module] -- import names
+ -> ([CostCentre], -- cost centre info
+ [CostCentre],
+ [CostCentreStack])
+ -> AbstractC
+mkModuleInit fe_binders mod imps cost_centre_info
+ = let
+ register_fes =
+ map (\f -> CMacroStmt REGISTER_FOREIGN_EXPORT [f]) fe_labels
- -----------------
- mkCcRegister ccs import_names
+ fe_labels =
+ map (\f -> CLbl (mkClosureLabel (idName f)) PtrRep) fe_binders
+
+ (cc_decls, cc_regs) = mkCostCentreStuff cost_centre_info
+
+ mk_import_register imp =
+ CMacroStmt REGISTER_IMPORT [
+ CLbl (mkModuleInitLabel imp) AddrRep
+ ]
+
+ register_imports = map mk_import_register imps
+ in
+ mkAbstractCs [
+ cc_decls,
+ CModuleInitBlock (mkModuleInitLabel mod)
+ (mkAbstractCs (register_fes ++
+ cc_regs :
+ register_imports))
+ ]
+\end{code}
+
+Cost-centre profiling: Besides the usual stuff, we must produce
+declarations for the cost-centres defined in this module;
+
+(The local cost-centres involved in this are passed into the
+code-generator.)
+
+\begin{code}
+mkCostCentreStuff (local_CCs, extern_CCs, singleton_CCSs)
+ | not opt_SccProfilingOn = (AbsCNop, AbsCNop)
+ | otherwise =
+ ( mkAbstractCs (
+ map (CCostCentreDecl True) local_CCs ++
+ map (CCostCentreDecl False) extern_CCs ++
+ map CCostCentreStackDecl singleton_CCSs),
+ mkAbstractCs (mkCcRegister local_CCs singleton_CCSs)
+ )
+ where
+ mkCcRegister ccs cc_stacks
= let
- register_ccs = mkAbstractCs (map mk_register ccs)
- register_imports
- = foldr (mkAbsCStmts . mk_import_register) AbsCNop import_names
+ register_ccs = mkAbstractCs (map mk_register ccs)
+ register_cc_stacks = mkAbstractCs (map mk_register_ccs cc_stacks)
in
- mkAbstractCs [
- CCallProfCCMacro SLIT("START_REGISTER_CCS") [CLitLit (modnameToC (SLIT("_reg") _APPEND_ mod_name)) AddrRep],
- register_ccs,
- register_imports,
- CCallProfCCMacro SLIT("END_REGISTER_CCS") []
- ]
+ [ register_ccs, register_cc_stacks ]
where
mk_register cc
= CCallProfCCMacro SLIT("REGISTER_CC") [mkCCostCentre cc]
- mk_import_register import_name
- = CCallProfCCMacro SLIT("REGISTER_IMPORT") [CLitLit (modnameToC (SLIT("_reg") _APPEND_ import_name)) AddrRep]
+ mk_register_ccs ccs
+ = CCallProfCCMacro SLIT("REGISTER_CCS") [mkCCostCentreStack ccs]
\end{code}
%************************************************************************
variable.
\begin{code}
-cgTopBindings :: AbstractC -> [StgBinding] -> Code
+cgTopBindings :: AbstractC -> [(StgBinding,[Id])] -> Code
cgTopBindings split bindings = mapCs (cgTopBinding split) bindings
-cgTopBinding :: AbstractC -> StgBinding -> Code
+cgTopBinding :: AbstractC -> (StgBinding,[Id]) -> Code
-cgTopBinding split (StgNonRec name rhs)
- = absC split `thenC`
- cgTopRhs name rhs `thenFC` \ (name, info) ->
+cgTopBinding split ((StgNonRec name rhs), srt)
+ = absC split `thenC`
+ absC (mkSRT srt_label srt) `thenC`
+ setSRTLabel srt_label (
+ cgTopRhs name rhs `thenFC` \ (name, info) ->
addBindC name info
+ )
+ where
+ srt_label = mkSRTLabel (idName name)
-cgTopBinding split (StgRec pairs)
- = absC split `thenC`
+cgTopBinding split ((StgRec pairs@((name,rhs):_)), srt)
+ = absC split `thenC`
+ absC (mkSRT srt_label srt) `thenC`
+ setSRTLabel srt_label (
fixC (\ new_binds -> addBindsC new_binds `thenC`
mapFCs ( \ (b,e) -> cgTopRhs b e ) pairs
- ) `thenFC` \ new_binds ->
+ ) `thenFC` \ new_binds ->
addBindsC new_binds
+ )
+ where
+ srt_label = mkSRTLabel (idName name)
+
+mkSRT :: CLabel -> [Id] -> AbstractC
+mkSRT lbl [] = AbsCNop
+mkSRT lbl ids = CSRT lbl (map (mkClosureLabel . idName) ids)
-- Urgh! I tried moving the forkStatics call from the rhss of cgTopRhs
-- to enclose the listFCs in cgTopBinding, but that tickled the
cgTopRhs :: Id -> StgRhs -> FCode (Id, CgIdInfo)
-- the Id is passed along for setting up a binding...
-cgTopRhs name (StgRhsCon cc con args)
- = forkStatics (cgTopRhsCon name con args (all zero_size args))
- where
- zero_size atom = getPrimRepSize (getArgPrimRep atom) == 0
+cgTopRhs bndr (StgRhsCon cc con args)
+ = forkStatics (cgTopRhsCon bndr con args)
-cgTopRhs name (StgRhsClosure cc bi fvs upd_flag args body)
+cgTopRhs bndr (StgRhsClosure cc bi srt fvs upd_flag args body)
= ASSERT(null fvs) -- There should be no free variables
- forkStatics (cgTopRhsClosure name cc bi args body lf_info)
- where
- lf_info = mkClosureLFInfo True{-top level-} [{-no fvs-}] upd_flag args
+ getSRTLabel `thenFC` \srt_label ->
+ let lf_info =
+ mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args srt_label srt
+ in
+ forkStatics (cgTopRhsClosure bndr cc bi args body lf_info)
\end{code}
projects / ghc-hetmet.git / blobdiff