X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FcodeGen%2FCodeGen.lhs;h=5b01138cd8dc5ee8b5550514d83a7a5f23911fc0;hb=f8031f577f9667ef1ab439b11fdd15fc39a79630;hp=b7f01cbc0b6b6abf1f30b1dcb9769e28dc0d3512;hpb=6009d77ae17f1b03e7ed208b40e65d1117544050;p=ghc-hetmet.git diff --git a/ghc/compiler/codeGen/CodeGen.lhs b/ghc/compiler/codeGen/CodeGen.lhs index b7f01cb..5b01138 100644 --- a/ghc/compiler/codeGen/CodeGen.lhs +++ b/ghc/compiler/codeGen/CodeGen.lhs @@ -24,11 +24,13 @@ module CodeGen ( codeGen ) where -- bother to compile it. import CgExpr ( {-NOTHING!-} ) -- DO NOT DELETE THIS IMPORT +import DriverState ( v_Build_tag, v_MainModIs ) import StgSyn import CgMonad import AbsCSyn -import CLabel ( CLabel, mkSRTLabel, mkClosureLabel, mkModuleInitLabel ) - +import PrelNames ( gHC_PRIM, rOOT_MAIN, mAIN_Name ) +import CLabel ( mkSRTLabel, mkClosureLabel, + mkPlainModuleInitLabel, mkModuleInitLabel ) import PprAbsC ( dumpRealC ) import AbsCUtils ( mkAbstractCs, flattenAbsC ) import CgBindery ( CgIdInfo, addBindC, addBindsC, getCAddrModeAndInfo ) @@ -38,58 +40,73 @@ import CgConTbls ( genStaticConBits ) import ClosureInfo ( mkClosureLFInfo ) import CmdLineOpts ( DynFlags, DynFlag(..), opt_SccProfilingOn, opt_EnsureSplittableC ) +import HscTypes ( ForeignStubs(..), TypeEnv, typeEnvTyCons ) import CostCentre ( CollectedCCs ) import Id ( Id, idName, setIdName ) -import Name ( nameSrcLoc, nameOccName, nameUnique, isLocalName, mkGlobalName ) +import Name ( nameSrcLoc, nameOccName, nameUnique, isInternalName, mkExternalName ) import OccName ( mkLocalOcc ) -import Module ( Module ) import PrimRep ( PrimRep(..) ) -import TyCon ( TyCon, isDataTyCon ) +import TyCon ( isDataTyCon ) +import Module ( Module, mkModuleName ) import BasicTypes ( TopLevelFlag(..) ) import UniqSupply ( mkSplitUniqSupply ) import ErrUtils ( dumpIfSet_dyn, showPass ) import Panic ( assertPanic ) +import qualified Module ( moduleName ) #ifdef DEBUG import Outputable #endif + +import DATA_IOREF ( readIORef ) \end{code} \begin{code} codeGen :: DynFlags - -> Module -- Module name - -> [Module] -- Import names + -> Module + -> TypeEnv + -> ForeignStubs + -> [Module] -- directly-imported modules -> 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 + -> [(StgBinding,[(Id,[Id])])] -- Bindings to convert, with SRTs -> IO AbstractC -- Output -codeGen dflags mod_name imported_modules cost_centre_info fe_binders - tycons stg_binds - = do { showPass dflags "CodeGen" - ; fl_uniqs <- mkSplitUniqSupply 'f' - ; dumpIfSet_dyn dflags Opt_D_dump_absC "Abstract C" (dumpRealC abstractC) - ; let flat_abstractC = flattenAbsC fl_uniqs abstractC - ; return flat_abstractC - } - where - data_tycons = filter isDataTyCon tycons - cinfo = MkCompInfo mod_name - - 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 +codeGen dflags this_mod type_env foreign_stubs imported_mods + cost_centre_info stg_binds + = do + showPass dflags "CodeGen" + fl_uniqs <- mkSplitUniqSupply 'f' + way <- readIORef v_Build_tag + mb_main_mod <- readIORef v_MainModIs + + let + tycons = typeEnvTyCons type_env + data_tycons = filter isDataTyCon tycons + + mapM_ (\x -> seq x (return ())) data_tycons + + let + + cinfo = MkCompInfo this_mod + + datatype_stuff = genStaticConBits cinfo data_tycons + code_stuff = initC cinfo (mapCs cgTopBinding stg_binds) + init_stuff = mkModuleInit way cost_centre_info + this_mod mb_main_mod + foreign_stubs imported_mods + 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 + + dumpIfSet_dyn dflags Opt_D_dump_absC "Abstract C" (dumpRealC abstractC) + + return $! flattenAbsC fl_uniqs abstractC \end{code} %************************************************************************ @@ -100,34 +117,59 @@ codeGen dflags mod_name imported_modules cost_centre_info fe_binders \begin{code} mkModuleInit - :: [Id] -- foreign exported functions - -> Module -- module name - -> [Module] -- import names + :: String -- the "way" -> CollectedCCs -- cost centre info + -> Module + -> Maybe String -- Just m ==> we have flag: -main-is Foo.baz + -> ForeignStubs + -> [Module] -> AbstractC -mkModuleInit fe_binders mod imps cost_centre_info +mkModuleInit way cost_centre_info this_mod mb_main_mod foreign_stubs imported_mods = let - register_fes = - map (\f -> CMacroStmt REGISTER_FOREIGN_EXPORT [f]) fe_labels - - 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 + register_foreign_exports + = case foreign_stubs of + NoStubs -> [] + ForeignStubs _ _ _ fe_bndrs -> map mk_export_register fe_bndrs + + mk_export_register bndr + = CMacroStmt REGISTER_FOREIGN_EXPORT [lbl] + where + lbl = CLbl (mkClosureLabel (idName bndr)) PtrRep + -- we don't want/need to init GHC.Prim, so filter it out + + mk_import_register mod + | mod == gHC_PRIM = AbsCNop + | otherwise = CMacroStmt REGISTER_IMPORT [ + CLbl (mkModuleInitLabel mod way) AddrRep + ] + + register_mod_imports = map mk_import_register imported_mods + + -- When compiling the module in which the 'main' function lives, + -- we inject an extra stg_init procedure for stg_init_ZCMain, for the + -- RTS to invoke. We must consult the -main-is flag in case the + -- user specified a different function to Main.main + main_mod_name = case mb_main_mod of + Just mod_name -> mkModuleName mod_name + Nothing -> mAIN_Name + main_init_block + | Module.moduleName this_mod /= main_mod_name + = AbsCNop -- The normal case + | otherwise -- this_mod contains the main function + = CCodeBlock (mkPlainModuleInitLabel rOOT_MAIN) + (CJump (CLbl (mkPlainModuleInitLabel this_mod) CodePtrRep)) + in mkAbstractCs [ cc_decls, - CModuleInitBlock (mkModuleInitLabel mod) - (mkAbstractCs (register_fes ++ + CModuleInitBlock (mkPlainModuleInitLabel this_mod) + (mkModuleInitLabel this_mod way) + (mkAbstractCs (register_foreign_exports ++ cc_regs : - register_imports)) + register_mod_imports)), + main_init_block ] \end{code} @@ -156,10 +198,10 @@ mkCostCentreStuff (local_CCs, extern_CCs, singleton_CCSs) [ 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} %************************************************************************ @@ -179,46 +221,42 @@ style, with the increasing static environment being plumbed as a state variable. \begin{code} -cgTopBinding :: (StgBinding,[Id]) -> Code -cgTopBinding (StgNonRec srt_info id rhs, srt) +cgTopBinding :: (StgBinding,[(Id,[Id])]) -> Code +cgTopBinding (StgNonRec id rhs, srts) = absC maybeSplitCode `thenC` - maybeGlobaliseId id `thenFC` \ id' -> - let - srt_label = mkSRTLabel (idName id') - in - mkSRT srt_label srt [] `thenC` - setSRTLabel srt_label ( - cgTopRhs id' rhs srt_info `thenFC` \ (id, info) -> - addBindC id info -- Add the un-globalised Id to the envt, so we - -- find it when we look up occurrences - ) - -cgTopBinding (StgRec srt_info pairs, srt) + maybeExternaliseId id `thenFC` \ id' -> + mapM_ (mkSRT [id']) srts `thenC` + cgTopRhs id' rhs `thenFC` \ (id, info) -> + addBindC id info `thenC` + -- Add the un-externalised Id to the envt, so we + -- find it when we look up occurrences + nopC + +cgTopBinding (StgRec pairs, srts) = absC maybeSplitCode `thenC` let (bndrs, rhss) = unzip pairs in - mapFCs maybeGlobaliseId bndrs `thenFC` \ bndrs'@(id:_) -> + mapFCs maybeExternaliseId bndrs `thenFC` \ bndrs' -> let - srt_label = mkSRTLabel (idName id) - pairs' = zip bndrs' rhss + pairs' = zip bndrs' rhss in - mkSRT srt_label srt bndrs' `thenC` - setSRTLabel srt_label ( - fixC (\ new_binds -> + mapM_ (mkSRT bndrs') srts `thenC` + fixC (\ new_binds -> addBindsC new_binds `thenC` - mapFCs ( \ (b,e) -> cgTopRhs b e srt_info ) pairs' - ) `thenFC` \ new_binds -> nopC - ) + mapFCs ( \ (b,e) -> cgTopRhs b e ) pairs' + ) `thenFC` \ new_binds -> + nopC -mkSRT :: CLabel -> [Id] -> [Id] -> Code -mkSRT lbl [] these = nopC -mkSRT lbl ids these +mkSRT :: [Id] -> (Id,[Id]) -> Code +mkSRT these (id,[]) = nopC +mkSRT these (id,ids) = mapFCs remap ids `thenFC` \ ids -> - absC (CSRT lbl (map (mkClosureLabel . idName) ids)) + remap id `thenFC` \ id -> + absC (CSRT (mkSRTLabel (idName id)) (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 @@ -228,19 +266,21 @@ mkSRT lbl ids these -- to enclose the listFCs in cgTopBinding, but that tickled the -- statics "error" call in initC. I DON'T UNDERSTAND WHY! -cgTopRhs :: Id -> StgRhs -> SRT -> FCode (Id, CgIdInfo) +cgTopRhs :: Id -> StgRhs -> FCode (Id, CgIdInfo) -- The Id is passed along for setting up a binding... - -- It's already been globalised if necessary + -- It's already been externalised if necessary -cgTopRhs bndr (StgRhsCon cc con args) srt - = forkStatics (cgTopRhsCon bndr con args srt) +cgTopRhs bndr (StgRhsCon cc con args) + = forkStatics (cgTopRhsCon bndr con args) -cgTopRhs bndr (StgRhsClosure cc bi fvs upd_flag args body) srt +cgTopRhs bndr (StgRhsClosure cc bi fvs upd_flag srt args body) = ASSERT(null fvs) -- There should be no free variables let + srt_label = mkSRTLabel (idName bndr) lf_info = mkClosureLFInfo bndr TopLevel [{-no fvs-}] upd_flag args in - forkStatics (cgTopRhsClosure bndr cc bi srt args body lf_info) + setSRTLabel srt_label $ + forkStatics (cgTopRhsClosure bndr cc bi srt args body lf_info) \end{code} @@ -250,17 +290,17 @@ cgTopRhs bndr (StgRhsClosure cc bi fvs upd_flag args body) srt %* * %************************************************************************ -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 +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). \begin{code} -maybeGlobaliseId :: Id -> FCode Id -maybeGlobaliseId id - | opt_EnsureSplittableC, -- Globalise the name for -split-objs - isLocalName name +maybeExternaliseId :: Id -> FCode Id +maybeExternaliseId id + | opt_EnsureSplittableC, -- Externalise the name for -split-objs + isInternalName name = moduleName `thenFC` \ mod -> - returnFC (setIdName id (mkGlobalName uniq mod new_occ (nameSrcLoc name))) + returnFC (setIdName id (mkExternalName uniq mod new_occ (nameSrcLoc name))) | otherwise = returnFC id where