X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FHscMain.lhs;h=e170f8fa31f351739aa92ccd39ec4b55d9ba1f24;hb=d7d596d039b48dec6b71df9c4bca0d12958ecdb9;hp=7236620b90a9d6d07ca52c3302bc90845f146e76;hpb=229307330827699a964174a69b03969769ca19dd;p=ghc-hetmet.git diff --git a/ghc/compiler/main/HscMain.lhs b/ghc/compiler/main/HscMain.lhs index 7236620..e170f8f 100644 --- a/ghc/compiler/main/HscMain.lhs +++ b/ghc/compiler/main/HscMain.lhs @@ -5,16 +5,22 @@ \section[GHC_Main]{Main driver for Glasgow Haskell compiler} \begin{code} -module HscMain ( - HscResult(..), - hscMain, newHscEnv, hscCmmFile, - hscFileCheck, - hscParseIdentifier, +module HscMain + ( newHscEnv, hscCmmFile + , hscFileCheck + , hscParseIdentifier #ifdef GHCI - hscStmt, hscTcExpr, hscKcType, - compileExpr, + , hscStmt, hscTcExpr, hscKcType + , compileExpr #endif - ) where + , hscCompileOneShot -- :: Compiler HscStatus + , hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails) + , hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails) + , hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails) + , HscStatus (..) + , InteractiveStatus (..) + , HscChecked (..) + ) where #include "HsVersions.h" @@ -27,6 +33,8 @@ import Linker ( HValue, linkExpr ) import CoreTidy ( tidyExpr ) import CorePrep ( corePrepExpr ) import Flattening ( flattenExpr ) +import Desugar ( deSugarExpr ) +import SimplCore ( simplifyExpr ) import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnType ) import Type ( Type ) import PrelNames ( iNTERACTIVE ) @@ -53,9 +61,9 @@ import IfaceEnv ( initNameCache ) import LoadIface ( ifaceStats, initExternalPackageState ) import PrelInfo ( wiredInThings, basicKnownKeyNames ) import MkIface ( checkOldIface, mkIface, writeIfaceFile ) -import Desugar +import Desugar ( deSugar ) import Flattening ( flatten ) -import SimplCore +import SimplCore ( core2core ) import TidyPgm ( tidyProgram, mkBootModDetails ) import CorePrep ( corePrepPgm ) import CoreToStg ( coreToStg ) @@ -69,7 +77,6 @@ import CodeOutput ( codeOutput ) import DynFlags import ErrUtils -import Util import UniqSupply ( mkSplitUniqSupply ) import Outputable @@ -81,8 +88,7 @@ import ParserCoreUtils import FastString import Maybes ( expectJust ) import Bag ( unitBag ) -import Monad ( when ) -import Maybe ( isJust ) +import Monad ( unless ) import IO import DATA_IOREF ( newIORef, readIORef ) \end{code} @@ -136,245 +142,369 @@ It's the task of the compilation proper to compile Haskell, hs-boot and core files to either byte-code, hard-code (C, asm, Java, ect) or to nothing at all (the module is still parsed and type-checked. This feature is mostly used by IDE's and the likes). -Compilation can happen in either 'one-shot', 'make', or 'interactive' -mode. 'One-shot' mode targets hard-code, 'make' mode targets hard-code -and nothing, and 'interactive' mode targets byte-code. The modes are -kept separate because of their different types. +Compilation can happen in either 'one-shot', 'batch', 'nothing', +or 'interactive' mode. 'One-shot' mode targets hard-code, 'batch' mode +targets hard-code, 'nothing' mode targets nothing and 'interactive' mode +targets byte-code. +The modes are kept separate because of their different types and meanings. In 'one-shot' mode, we're only compiling a single file and can therefore discard the new ModIface and ModDetails. This is also the reason it only targets hard-code; compiling to byte-code or nothing doesn't make sense -when we discard the result. 'Make' mode is like 'one-shot' except that we -keep the resulting ModIface and ModDetails. 'Make' mode doesn't target -byte-code since that require us to return the newly compiled byte-code. -'Interactive' mode is similar to 'make' mode except that we return -the compiled byte-code together with the ModIface and ModDetails. +when we discard the result. +'Batch' mode is like 'one-shot' except that we keep the resulting ModIface +and ModDetails. 'Batch' mode doesn't target byte-code since that require +us to return the newly compiled byte-code. +'Nothing' mode has exactly the same type as 'batch' mode but they're still +kept separate. This is because compiling to nothing is fairly special: We +don't output any interface files, we don't run the simplifier and we don't +generate any code. +'Interactive' mode is similar to 'batch' mode except that we return the +compiled byte-code together with the ModIface and ModDetails. + Trying to compile a hs-boot file to byte-code will result in a run-time error. This is the only thing that isn't caught by the type-system. \begin{code} -data HscResult - -- Compilation failed - = HscFail - -- In IDE mode: we just do the static/dynamic checks - | HscChecked +data HscChecked + = HscChecked -- parsed - (Located (HsModule RdrName)) + (Located (HsModule RdrName)) -- renamed - (Maybe (HsGroup Name,[LImportDecl Name],Maybe [LIE Name])) + (Maybe (HsGroup Name,[LImportDecl Name],Maybe [LIE Name])) -- typechecked - (Maybe (LHsBinds Id, GlobalRdrEnv, ModDetails)) + (Maybe (LHsBinds Id, GlobalRdrEnv, ModDetails)) - -- Concluded that it wasn't necessary - | HscNoRecomp ModDetails -- new details (HomeSymbolTable additions) - ModIface -- new iface (if any compilation was done) - -- Did recompilation - | HscRecomp ModDetails -- new details (HomeSymbolTable additions) - ModIface -- new iface (if any compilation was done) - Bool -- stub_h exists - Bool -- stub_c exists - (Maybe CompiledByteCode) +-- Status of a compilation to hard-code or nothing. +data HscStatus + = HscNoRecomp + | HscRecomp Bool -- Has stub files. + -- This is a hack. We can't compile C files here + -- since it's done in DriverPipeline. For now we + -- just return True if we want the caller to compile + -- it for us. + +-- Status of a compilation to byte-code. +data InteractiveStatus + = InteractiveNoRecomp + | InteractiveRecomp Bool -- Same as HscStatus + CompiledByteCode --- What to do when we have compiler error or warning messages -type MessageAction = Messages -> IO () +-- I want Control.Monad.State! --Lemmih 03/07/2006 +newtype Comp a = Comp {runComp :: CompState -> IO (a, CompState)} +instance Monad Comp where + g >>= fn = Comp $ \s -> runComp g s >>= \(a,s') -> runComp (fn a) s' + return a = Comp $ \s -> return (a,s) + fail = error --------------------------------------------------------------- --- Exterimental code start. --------------------------------------------------------------- +evalComp :: Comp a -> CompState -> IO a +evalComp comp st = do (val,_st') <- runComp comp st + return val -data HscStatus - = NewHscNoRecomp - | NewHscRecomp Bool -- Has stub files. - -- This is a hack. We can't compile C files here - -- since it's done in DriverPipeline. For now we - -- just return True if we want the caller to compile - -- it for us. +data CompState + = CompState + { compHscEnv :: HscEnv + , compModSummary :: ModSummary + , compOldIface :: Maybe ModIface + } -data InteractiveStatus - = InteractiveNoRecomp - | InteractiveRecomp Bool -- Same as HscStatus - CompiledByteCode +get :: Comp CompState +get = Comp $ \s -> return (s,s) + +gets :: (CompState -> a) -> Comp a +gets getter = do st <- get + return (getter st) -type NoRecomp result = HscEnv -> ModSummary -> Bool -> ModIface -> Maybe (Int,Int) -> IO result -type FrontEnd core = HscEnv -> ModSummary -> Maybe (Int,Int) -> IO (Maybe core) -type BackEnd core prepCore = HscEnv -> ModSummary -> Maybe ModIface -> core -> IO prepCore -type CodeGen prepCore result = HscEnv -> ModSummary -> prepCore -> IO result +liftIO :: IO a -> Comp a +liftIO ioA = Comp $ \s -> do a <- ioA + return (a,s) +type NoRecomp result = ModIface -> Comp result +type FrontEnd core = Comp (Maybe core) + +-- FIXME: The old interface and module index are only using in 'batch' and +-- 'interactive' mode. They should be removed from 'oneshot' mode. type Compiler result = HscEnv -> ModSummary -> Bool -- True <=> source unchanged - -> Bool -- True <=> have an object file (for msgs only) -> Maybe ModIface -- Old interface, if available -> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs) -> IO (Maybe result) +-- This functions checks if recompilation is necessary and +-- then combines the FrontEnd and BackEnd to a working compiler. hscMkCompiler :: NoRecomp result -- What to do when recompilation isn't required. + -> (Maybe (Int,Int) -> Bool -> Comp ()) -> FrontEnd core - -> BackEnd core prepCore - -> CodeGen prepCore result + -> (core -> Comp result) -- Backend. -> Compiler result -hscMkCompiler norecomp frontend backend codegen +hscMkCompiler norecomp messenger frontend backend hsc_env mod_summary source_unchanged - have_object mbOldIface mbModIndex - = do (recomp_reqd, mbCheckedIface) + mbOldIface mbModIndex + = flip evalComp (CompState hsc_env mod_summary mbOldIface) $ + do (recomp_reqd, mbCheckedIface) <- {-# SCC "checkOldIface" #-} - checkOldIface hsc_env mod_summary + liftIO $ checkOldIface hsc_env mod_summary source_unchanged mbOldIface case mbCheckedIface of Just iface | not recomp_reqd - -> do result <- norecomp hsc_env mod_summary have_object iface mbModIndex + -> do messenger mbModIndex False + result <- norecomp iface return (Just result) _otherwise - -> do mbCore <- frontend hsc_env mod_summary mbModIndex + -> do messenger mbModIndex True + mbCore <- frontend case mbCore of Nothing -> return Nothing Just core - -> do prepCore <- backend hsc_env mod_summary - mbCheckedIface core - result <- codegen hsc_env mod_summary prepCore + -> do result <- backend core return (Just result) +-------------------------------------------------------------- +-- Compilers +-------------------------------------------------------------- + +-- 1 2 3 4 5 6 7 8 9 -- Compile Haskell, boot and extCore in OneShot mode. hscCompileOneShot :: Compiler HscStatus hscCompileOneShot hsc_env mod_summary = compiler hsc_env mod_summary - where mkComp = hscMkCompiler (norecompOneShot NewHscNoRecomp) + where mkComp = hscMkCompiler norecompOneShot oneShotMsg + -- How to compile nonBoot files. + nonBootComp inp = hscSimplify inp >>= hscNormalIface >>= + hscWriteIface >>= hscOneShot + -- How to compile boot files. + bootComp inp = hscSimpleIface inp >>= hscWriteIface >>= hscConst (HscRecomp False) compiler = case ms_hsc_src mod_summary of ExtCoreFile - -> mkComp hscCoreFrontEnd hscNewBackEnd hscCodeGenOneShot --- 1 2 3 4 5 6 7 8 9 + -> mkComp hscCoreFrontEnd nonBootComp HsSrcFile - -> mkComp hscFileFrontEnd hscNewBackEnd hscCodeGenOneShot + -> mkComp hscFileFrontEnd nonBootComp HsBootFile - -> mkComp hscFileFrontEnd hscNewBootBackEnd - (hscCodeGenConst (NewHscRecomp False)) + -> mkComp hscFileFrontEnd bootComp --- Compile Haskell, boot and extCore in --make mode. -hscCompileMake :: Compiler (HscStatus, ModIface, ModDetails) -hscCompileMake hsc_env mod_summary +-- Compile Haskell, boot and extCore in batch mode. +hscCompileBatch :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileBatch hsc_env mod_summary = compiler hsc_env mod_summary - where mkComp = hscMkCompiler norecompMake - backend = case hscTarget (hsc_dflags hsc_env) of - HscNothing -> hscCodeGenSimple (\(i, d, g) -> (NewHscRecomp False, i, d)) - _other -> hscCodeGenMake + where mkComp = hscMkCompiler norecompBatch batchMsg + nonBootComp inp = hscSimplify inp >>= hscNormalIface >>= + hscWriteIface >>= hscBatch + bootComp inp = hscSimpleIface inp >>= hscWriteIface >>= hscNothing compiler = case ms_hsc_src mod_summary of ExtCoreFile - -> mkComp hscCoreFrontEnd hscNewBackEnd backend + -> mkComp hscCoreFrontEnd nonBootComp HsSrcFile - -> mkComp hscFileFrontEnd hscNewBackEnd backend + -> mkComp hscFileFrontEnd nonBootComp HsBootFile - -> mkComp hscFileFrontEnd hscNewBootBackEnd hscCodeGenIdentity + -> mkComp hscFileFrontEnd bootComp +-- Type-check Haskell, boot and extCore. +-- Does it make sense to compile extCore to nothing? +hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileNothing hsc_env mod_summary + = compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompBatch batchMsg + pipeline inp = hscSimpleIface inp >>= hscIgnoreIface >>= hscNothing + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd pipeline + HsSrcFile + -> mkComp hscFileFrontEnd pipeline + HsBootFile + -> mkComp hscFileFrontEnd pipeline -- Compile Haskell, extCore to bytecode. hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails) hscCompileInteractive hsc_env mod_summary = - hscMkCompiler norecompInteractive frontend hscNewBackEnd hscCodeGenInteractive + hscMkCompiler norecompInteractive batchMsg + frontend backend hsc_env mod_summary - where frontend = case ms_hsc_src mod_summary of + where backend inp = hscSimplify inp >>= hscNormalIface >>= hscIgnoreIface >>= hscInteractive + frontend = case ms_hsc_src mod_summary of ExtCoreFile -> hscCoreFrontEnd HsSrcFile -> hscFileFrontEnd HsBootFile -> panic bootErrorMsg bootErrorMsg = "Compiling a HsBootFile to bytecode doesn't make sense. " ++ - "Use 'hscCompileMake' instead." - -norecompOneShot :: a -> NoRecomp a -norecompOneShot a hsc_env mod_summary - have_object old_iface - mb_mod_index - = do compilationProgressMsg (hsc_dflags hsc_env) $ - "compilation IS NOT required" + "Use 'hscCompileBatch' instead." + +-------------------------------------------------------------- +-- NoRecomp handlers +-------------------------------------------------------------- + +norecompOneShot :: NoRecomp HscStatus +norecompOneShot old_iface + = do hsc_env <- gets compHscEnv + liftIO $ do dumpIfaceStats hsc_env - return a + return HscNoRecomp -norecompMake :: NoRecomp (HscStatus, ModIface, ModDetails) -norecompMake = norecompWorker NewHscNoRecomp +norecompBatch :: NoRecomp (HscStatus, ModIface, ModDetails) +norecompBatch = norecompWorker HscNoRecomp False norecompInteractive :: NoRecomp (InteractiveStatus, ModIface, ModDetails) -norecompInteractive = norecompWorker InteractiveNoRecomp - -norecompWorker :: a -> NoRecomp (a, ModIface, ModDetails) -norecompWorker a hsc_env mod_summary have_object - old_iface mb_mod_index - = do compilationProgressMsg (hsc_dflags hsc_env) $ - (showModuleIndex mb_mod_index ++ - "Skipping " ++ showModMsg have_object mod_summary) +norecompInteractive = norecompWorker InteractiveNoRecomp True + +norecompWorker :: a -> Bool -> NoRecomp (a, ModIface, ModDetails) +norecompWorker a isInterp old_iface + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do new_details <- {-# SCC "tcRnIface" #-} initIfaceCheck hsc_env $ typecheckIface old_iface dumpIfaceStats hsc_env return (a, old_iface, new_details) -hscNewBootBackEnd :: BackEnd ModGuts (HscStatus, ModIface, ModDetails) -hscNewBootBackEnd hsc_env mod_summary maybe_old_iface ds_result - = do details <- mkBootModDetails hsc_env ds_result - (new_iface, no_change) - <- {-# SCC "MkFinalIface" #-} - mkIface hsc_env maybe_old_iface ds_result details - writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - -- And the answer is ... - dumpIfaceStats hsc_env - return (NewHscRecomp False, new_iface, details) +-------------------------------------------------------------- +-- Progress displayers. +-------------------------------------------------------------- -hscNewBackEnd :: BackEnd ModGuts (ModIface, ModDetails, CgGuts) -hscNewBackEnd hsc_env mod_summary maybe_old_iface ds_result - = do { -- OMITTED: - -- ; seqList imported_modules (return ()) +oneShotMsg :: Maybe (Int,Int) -> Bool -> Comp () +oneShotMsg _mb_mod_index recomp + = do hsc_env <- gets compHscEnv + liftIO $ do + if recomp + then return () + else compilationProgressMsg (hsc_dflags hsc_env) $ + "compilation IS NOT required" + +batchMsg :: Maybe (Int,Int) -> Bool -> Comp () +batchMsg mb_mod_index recomp + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + let showMsg msg = compilationProgressMsg (hsc_dflags hsc_env) $ + (showModuleIndex mb_mod_index ++ + msg ++ showModMsg (hscTarget (hsc_dflags hsc_env)) recomp mod_summary) + liftIO $ do + if recomp + then showMsg "Compiling " + else showMsg "Skipping " - let dflags = hsc_dflags hsc_env - ------------------- - -- FLATTENING - ------------------- - ; flat_result <- {-# SCC "Flattening" #-} - flatten hsc_env ds_result +-------------------------------------------------------------- +-- FrontEnds +-------------------------------------------------------------- -{- TEMP: need to review space-leak fixing here - NB: even the code generator can force one of the - thunks for constructor arguments, for newtypes in particular +hscCoreFrontEnd :: FrontEnd ModGuts +hscCoreFrontEnd = + do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + ------------------- + -- PARSE + ------------------- + inp <- readFile (ms_hspp_file mod_summary) + case parseCore inp 1 of + FailP s + -> do errorMsg (hsc_dflags hsc_env) (text s{-ToDo: wrong-}) + return Nothing + OkP rdr_module + ------------------- + -- RENAME and TYPECHECK + ------------------- + -> do (tc_msgs, maybe_tc_result) <- {-# SCC "TypeCheck" #-} + tcRnExtCore hsc_env rdr_module + printErrorsAndWarnings (hsc_dflags hsc_env) tc_msgs + case maybe_tc_result of + Nothing -> return Nothing + Just mod_guts -> return (Just mod_guts) -- No desugaring to do! - ; let -- Rule-base accumulated from imported packages - pkg_rule_base = eps_rule_base (hsc_EPS hsc_env) + +hscFileFrontEnd :: FrontEnd ModGuts +hscFileFrontEnd = + do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + ------------------- + -- PARSE + ------------------- + let dflags = hsc_dflags hsc_env + hspp_file = ms_hspp_file mod_summary + hspp_buf = ms_hspp_buf mod_summary + maybe_parsed <- myParseModule dflags hspp_file hspp_buf + case maybe_parsed of + Left err + -> do printBagOfErrors dflags (unitBag err) + return Nothing + Right rdr_module + ------------------- + -- RENAME and TYPECHECK + ------------------- + -> do (tc_msgs, maybe_tc_result) + <- {-# SCC "Typecheck-Rename" #-} + tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module + printErrorsAndWarnings dflags tc_msgs + case maybe_tc_result of + Nothing + -> return Nothing + Just tc_result + ------------------- + -- DESUGAR + ------------------- + -> do (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-} + deSugar hsc_env tc_result + printBagOfWarnings dflags warns + return maybe_ds_result - -- In one-shot mode, ZAP the external package state at - -- this point, because we aren't going to need it from - -- now on. We keep the name cache, however, because - -- tidyCore needs it. - pcs_middle - | one_shot = pcs_tc{ pcs_EPS = error "pcs_EPS missing" } - | otherwise = pcs_tc +-------------------------------------------------------------- +-- Simplifiers +-------------------------------------------------------------- - ; pkg_rule_base `seq` pcs_middle `seq` return () --} +hscSimplify :: ModGuts -> Comp ModGuts +hscSimplify ds_result + = do hsc_env <- gets compHscEnv + liftIO $ do + flat_result <- {-# SCC "Flattening" #-} + flatten hsc_env ds_result + ------------------- + -- SIMPLIFY + ------------------- + simpl_result <- {-# SCC "Core2Core" #-} + core2core hsc_env flat_result + return simpl_result - -- alive at this point: - -- pcs_middle - -- flat_result - -- pkg_rule_base +-------------------------------------------------------------- +-- Interface generators +-------------------------------------------------------------- - ------------------- - -- SIMPLIFY - ------------------- - ; simpl_result <- {-# SCC "Core2Core" #-} - core2core hsc_env flat_result +-- HACK: we return ModGuts even though we know it's not gonna be used. +-- We do this because the type signature needs to be identical +-- in structure to the type of 'hscNormalIface'. +hscSimpleIface :: ModGuts -> Comp (ModIface, Bool, ModDetails, ModGuts) +hscSimpleIface ds_result + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + maybe_old_iface <- gets compOldIface + liftIO $ do + details <- mkBootModDetails hsc_env ds_result + (new_iface, no_change) + <- {-# SCC "MkFinalIface" #-} + mkIface hsc_env maybe_old_iface ds_result details + -- And the answer is ... + dumpIfaceStats hsc_env + return (new_iface, no_change, details, ds_result) +hscNormalIface :: ModGuts -> Comp (ModIface, Bool, ModDetails, CgGuts) +hscNormalIface simpl_result + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + maybe_old_iface <- gets compOldIface + liftIO $ do ------------------- -- TIDY ------------------- - ; (cg_guts, details) <- {-# SCC "CoreTidy" #-} - tidyProgram hsc_env simpl_result - - -- Alive at this point: - -- tidy_result, pcs_final - -- hsc_env + (cg_guts, details) <- {-# SCC "CoreTidy" #-} + tidyProgram hsc_env simpl_result ------------------- -- BUILD THE NEW ModIface and ModDetails @@ -382,40 +512,57 @@ hscNewBackEnd hsc_env mod_summary maybe_old_iface ds_result -- This has to happen *after* code gen so that the back-end -- info has been set. Not yet clear if it matters waiting -- until after code output - ; (new_iface, no_change) + (new_iface, no_change) <- {-# SCC "MkFinalIface" #-} mkIface hsc_env maybe_old_iface simpl_result details - - ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - -- Emit external core - ; emitExternalCore dflags cg_guts + emitExternalCore (hsc_dflags hsc_env) cg_guts -- Move this? --Lemmih 03/07/2006 + dumpIfaceStats hsc_env ------------------- -- Return the prepared code. - ; return (new_iface, details, cg_guts) - } + return (new_iface, no_change, details, cg_guts) + +-------------------------------------------------------------- +-- BackEnd combinators +-------------------------------------------------------------- + +hscWriteIface :: (ModIface, Bool, ModDetails, a) -> Comp (ModIface, ModDetails, a) +hscWriteIface (iface, no_change, details, a) + = do mod_summary <- gets compModSummary + liftIO $ do + unless no_change + $ writeIfaceFile (ms_location mod_summary) iface + return (iface, details, a) + +hscIgnoreIface :: (ModIface, Bool, ModDetails, a) -> Comp (ModIface, ModDetails, a) +hscIgnoreIface (iface, no_change, details, a) + = return (iface, details, a) -- Don't output any code. -hscCodeGenNothing :: CodeGen (ModIface, ModDetails, CgGuts) (HscStatus, ModIface, ModDetails) -hscCodeGenNothing hsc_env mod_summary (iface, details, cgguts) - = return (NewHscRecomp False, iface, details) +hscNothing :: (ModIface, ModDetails, a) -> Comp (HscStatus, ModIface, ModDetails) +hscNothing (iface, details, a) + = return (HscRecomp False, iface, details) -- Generate code and return both the new ModIface and the ModDetails. -hscCodeGenMake :: CodeGen (ModIface, ModDetails, CgGuts) (HscStatus, ModIface, ModDetails) -hscCodeGenMake hsc_env mod_summary (iface, details, cgguts) - = do hasStub <- hscCodeGenCompile hsc_env mod_summary cgguts - return (NewHscRecomp hasStub, iface, details) +hscBatch :: (ModIface, ModDetails, CgGuts) -> Comp (HscStatus, ModIface, ModDetails) +hscBatch (iface, details, cgguts) + = do hasStub <- hscCompile cgguts + return (HscRecomp hasStub, iface, details) -- Here we don't need the ModIface and ModDetails anymore. -hscCodeGenOneShot :: CodeGen (ModIface, ModDetails, CgGuts) HscStatus -hscCodeGenOneShot hsc_env mod_summary (_, _, cgguts) - = do hasStub <- hscCodeGenCompile hsc_env mod_summary cgguts - return (NewHscRecomp hasStub) - -hscCodeGenCompile :: CodeGen CgGuts Bool -hscCodeGenCompile hsc_env mod_summary cgguts - = do let CgGuts{ -- This is the last use of the ModGuts in a compilation. +hscOneShot :: (ModIface, ModDetails, CgGuts) -> Comp HscStatus +hscOneShot (_, _, cgguts) + = do hasStub <- hscCompile cgguts + return (HscRecomp hasStub) + +-- Compile to hard-code. +hscCompile :: CgGuts -> Comp Bool +hscCompile cgguts + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + let CgGuts{ -- This is the last use of the ModGuts in a compilation. -- From now on, we just use the bits we need. cg_module = this_mod, cg_binds = core_binds, @@ -426,7 +573,6 @@ hscCodeGenCompile hsc_env mod_summary cgguts cg_dep_pkgs = dependencies } = cgguts dflags = hsc_dflags hsc_env location = ms_location mod_summary - modName = ms_mod mod_summary data_tycons = filter isDataTyCon tycons -- cg_tycons includes newtypes, for the benefit of External Core, -- but we don't generate any code for newtypes @@ -451,30 +597,24 @@ hscCodeGenCompile hsc_env mod_summary cgguts dependencies abstractC return stub_c_exists -hscCodeGenIdentity :: CodeGen a a -hscCodeGenIdentity hsc_env mod_summary a = return a +hscConst :: b -> a -> Comp b +hscConst b a = return b -hscCodeGenSimple :: (a -> b) -> CodeGen a b -hscCodeGenSimple fn hsc_env mod_summary a = return (fn a) - -hscCodeGenConst :: b -> CodeGen a b -hscCodeGenConst b hsc_env mod_summary a = return b - -hscCodeGenInteractive :: CodeGen (ModIface, ModDetails, CgGuts) - (InteractiveStatus, ModIface, ModDetails) -hscCodeGenInteractive hsc_env mod_summary (iface, details, cgguts) +hscInteractive :: (ModIface, ModDetails, CgGuts) + -> Comp (InteractiveStatus, ModIface, ModDetails) +hscInteractive (iface, details, cgguts) #ifdef GHCI - = do let CgGuts{ -- This is the last use of the ModGuts in a compilation. + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + let CgGuts{ -- This is the last use of the ModGuts in a compilation. -- From now on, we just use the bits we need. cg_module = this_mod, cg_binds = core_binds, cg_tycons = tycons, - cg_foreign = foreign_stubs, - cg_home_mods = home_mods, - cg_dep_pkgs = dependencies } = cgguts + cg_foreign = foreign_stubs } = cgguts dflags = hsc_dflags hsc_env location = ms_location mod_summary - modName = ms_mod mod_summary data_tycons = filter isDataTyCon tycons -- cg_tycons includes newtypes, for the benefit of External Core, -- but we don't generate any code for newtypes @@ -494,177 +634,22 @@ hscCodeGenInteractive hsc_env mod_summary (iface, details, cgguts) = panic "GHC not compiled with interpreter" #endif - - --------------------------------------------------------------- --- Exterimental code end. --------------------------------------------------------------- - - -- no errors or warnings; the individual passes - -- (parse/rename/typecheck) print messages themselves - -hscMain - :: HscEnv - -> ModSummary - -> Bool -- True <=> source unchanged - -> Bool -- True <=> have an object file (for msgs only) - -> Maybe ModIface -- Old interface, if available - -> Maybe (Int, Int) -- Just (i,n) <=> module i of n (for msgs) - -> IO HscResult - -hscMain hsc_env mod_summary - source_unchanged have_object maybe_old_iface - mb_mod_index - = do { - (recomp_reqd, maybe_checked_iface) <- - {-# SCC "checkOldIface" #-} - checkOldIface hsc_env mod_summary - source_unchanged maybe_old_iface; - - let no_old_iface = not (isJust maybe_checked_iface) - what_next | recomp_reqd || no_old_iface = hscRecomp - | otherwise = hscNoRecomp - - ; what_next hsc_env mod_summary have_object - maybe_checked_iface - mb_mod_index - } - - ------------------------------- -hscNoRecomp hsc_env mod_summary - have_object (Just old_iface) - mb_mod_index - | isOneShot (ghcMode (hsc_dflags hsc_env)) - = do { - compilationProgressMsg (hsc_dflags hsc_env) $ - "compilation IS NOT required"; - dumpIfaceStats hsc_env ; - - let { bomb = panic "hscNoRecomp:OneShot" }; - return (HscNoRecomp bomb bomb) - } - | otherwise - = do { compilationProgressMsg (hsc_dflags hsc_env) $ - (showModuleIndex mb_mod_index ++ - "Skipping " ++ showModMsg have_object mod_summary) - - ; new_details <- {-# SCC "tcRnIface" #-} - initIfaceCheck hsc_env $ - typecheckIface old_iface ; - ; dumpIfaceStats hsc_env - - ; return (HscNoRecomp new_details old_iface) - } - -hscNoRecomp hsc_env mod_summary - have_object Nothing - mb_mod_index - = panic "hscNoRecomp" -- hscNoRecomp definitely expects to - -- have the old interface available - ------------------------------ -hscRecomp hsc_env mod_summary - have_object maybe_old_iface - mb_mod_index - = case ms_hsc_src mod_summary of - HsSrcFile -> do - front_res <- hscFileFrontEnd hsc_env mod_summary mb_mod_index - case ghcMode (hsc_dflags hsc_env) of - JustTypecheck -> hscBootBackEnd hsc_env mod_summary maybe_old_iface front_res - _ -> hscBackEnd hsc_env mod_summary maybe_old_iface front_res - - HsBootFile -> do - front_res <- hscFileFrontEnd hsc_env mod_summary mb_mod_index - hscBootBackEnd hsc_env mod_summary maybe_old_iface front_res - - ExtCoreFile -> do - front_res <- hscCoreFrontEnd hsc_env mod_summary mb_mod_index - hscBackEnd hsc_env mod_summary maybe_old_iface front_res - -hscCoreFrontEnd hsc_env mod_summary mb_mod_index = do { - ------------------- - -- PARSE - ------------------- - ; inp <- readFile (expectJust "hscCoreFrontEnd" (ms_hspp_file mod_summary)) - ; case parseCore inp 1 of - FailP s -> errorMsg (hsc_dflags hsc_env) (text s{-ToDo: wrong-}) >> return Nothing - OkP rdr_module -> do { - - ------------------- - -- RENAME and TYPECHECK - ------------------- - ; (tc_msgs, maybe_tc_result) <- {-# SCC "TypeCheck" #-} - tcRnExtCore hsc_env rdr_module - ; printErrorsAndWarnings (hsc_dflags hsc_env) tc_msgs - ; case maybe_tc_result of - Nothing -> return Nothing - Just mod_guts -> return (Just mod_guts) -- No desugaring to do! - }} - -hscFileFrontEnd hsc_env mod_summary mb_mod_index = do { - ------------------- - -- DISPLAY PROGRESS MESSAGE - ------------------- - ; let dflags = hsc_dflags hsc_env - one_shot = isOneShot (ghcMode dflags) - toInterp = hscTarget dflags == HscInterpreted - ; when (not one_shot) $ - compilationProgressMsg dflags $ - (showModuleIndex mb_mod_index ++ - "Compiling " ++ showModMsg (not toInterp) mod_summary) - - ------------------- - -- PARSE - ------------------- - ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) - hspp_buf = ms_hspp_buf mod_summary - - ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf - - ; case maybe_parsed of { - Left err -> do { printBagOfErrors dflags (unitBag err) - ; return Nothing } ; - Right rdr_module -> do { - - ------------------- - -- RENAME and TYPECHECK - ------------------- - (tc_msgs, maybe_tc_result) - <- {-# SCC "Typecheck-Rename" #-} - tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module - - ; printErrorsAndWarnings dflags tc_msgs - ; case maybe_tc_result of { - Nothing -> return Nothing ; - Just tc_result -> do { - - ------------------- - -- DESUGAR - ------------------- - ; (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-} - deSugar hsc_env tc_result - ; printBagOfWarnings dflags warns - ; return maybe_ds_result - }}}}} - ------------------------------- - -hscFileCheck :: HscEnv -> ModSummary -> IO HscResult +hscFileCheck :: HscEnv -> ModSummary -> IO (Maybe HscChecked) hscFileCheck hsc_env mod_summary = do { ------------------- -- PARSE ------------------- ; let dflags = hsc_dflags hsc_env - hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) + hspp_file = ms_hspp_file mod_summary hspp_buf = ms_hspp_buf mod_summary ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf ; case maybe_parsed of { Left err -> do { printBagOfErrors dflags (unitBag err) - ; return HscFail } ; + ; return Nothing } ; Right rdr_module -> do { ------------------- @@ -678,7 +663,7 @@ hscFileCheck hsc_env mod_summary = do { ; printErrorsAndWarnings dflags tc_msgs ; case maybe_tc_result of { - Nothing -> return (HscChecked rdr_module Nothing Nothing); + Nothing -> return (Just (HscChecked rdr_module Nothing Nothing)); Just tc_result -> do let md = ModDetails { md_types = tcg_type_env tc_result, @@ -691,194 +676,13 @@ hscFileCheck hsc_env mod_summary = do { imports <- tcg_rn_imports tc_result let exports = tcg_rn_exports tc_result return (decl,imports,exports) - return (HscChecked rdr_module + return (Just (HscChecked rdr_module rnInfo (Just (tcg_binds tc_result, tcg_rdr_env tc_result, - md))) + md)))) }}}} ------------------------------- -hscBootBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult --- For hs-boot files, there's no code generation to do - -hscBootBackEnd hsc_env mod_summary maybe_old_iface Nothing - = return HscFail -hscBootBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result) - = do { details <- mkBootModDetails hsc_env ds_result - - ; (new_iface, no_change) - <- {-# SCC "MkFinalIface" #-} - mkIface hsc_env maybe_old_iface ds_result details - - ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - - -- And the answer is ... - ; dumpIfaceStats hsc_env - - ; return (HscRecomp details new_iface - False False Nothing) - } - ------------------------------- -hscBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult - -hscBackEnd hsc_env mod_summary maybe_old_iface Nothing - = return HscFail - -hscBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result) - = do { -- OMITTED: - -- ; seqList imported_modules (return ()) - - let one_shot = isOneShot (ghcMode dflags) - dflags = hsc_dflags hsc_env - - ------------------- - -- FLATTENING - ------------------- - ; flat_result <- {-# SCC "Flattening" #-} - flatten hsc_env ds_result - - -{- TEMP: need to review space-leak fixing here - NB: even the code generator can force one of the - thunks for constructor arguments, for newtypes in particular - - ; let -- Rule-base accumulated from imported packages - pkg_rule_base = eps_rule_base (hsc_EPS hsc_env) - - -- In one-shot mode, ZAP the external package state at - -- this point, because we aren't going to need it from - -- now on. We keep the name cache, however, because - -- tidyCore needs it. - pcs_middle - | one_shot = pcs_tc{ pcs_EPS = error "pcs_EPS missing" } - | otherwise = pcs_tc - - ; pkg_rule_base `seq` pcs_middle `seq` return () --} - - -- alive at this point: - -- pcs_middle - -- flat_result - -- pkg_rule_base - - ------------------- - -- SIMPLIFY - ------------------- - ; simpl_result <- {-# SCC "Core2Core" #-} - core2core hsc_env flat_result - - ------------------- - -- TIDY - ------------------- - ; (cg_guts, details) <- {-# SCC "CoreTidy" #-} - tidyProgram hsc_env simpl_result - - -- Alive at this point: - -- tidy_result, pcs_final - -- hsc_env - - ------------------- - -- BUILD THE NEW ModIface and ModDetails - -- and emit external core if necessary - -- This has to happen *after* code gen so that the back-end - -- info has been set. Not yet clear if it matters waiting - -- until after code output - ; (new_iface, no_change) - <- {-# SCC "MkFinalIface" #-} - mkIface hsc_env maybe_old_iface simpl_result details - - ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - - -- Space leak reduction: throw away the new interface if - -- we're in one-shot mode; we won't be needing it any - -- more. - ; final_iface <- if one_shot then return (error "no final iface") - else return new_iface - - -- Build the final ModDetails (except in one-shot mode, where - -- we won't need this information after compilation). - ; final_details <- if one_shot then return (error "no final details") - else return $! details - - -- Emit external core - ; emitExternalCore dflags cg_guts - - ------------------- - -- CONVERT TO STG and COMPLETE CODE GENERATION - ; (stub_h_exists, stub_c_exists, maybe_bcos) - <- hscCodeGen dflags (ms_location mod_summary) cg_guts - - -- And the answer is ... - ; dumpIfaceStats hsc_env - - ; return (HscRecomp final_details - final_iface - stub_h_exists stub_c_exists - maybe_bcos) - } - - - -hscCodeGen dflags location - CgGuts{ -- This is the last use of the ModGuts in a compilation. - -- From now on, we just use the bits we need. - cg_module = this_mod, - cg_binds = core_binds, - cg_tycons = tycons, - cg_dir_imps = dir_imps, - cg_foreign = foreign_stubs, - cg_home_mods = home_mods, - cg_dep_pkgs = dependencies } = do { - - let { data_tycons = filter isDataTyCon tycons } ; - -- cg_tycons includes newtypes, for the benefit of External Core, - -- but we don't generate any code for newtypes - - ------------------- - -- PREPARE FOR CODE GENERATION - -- Do saturation and convert to A-normal form - prepd_binds <- {-# SCC "CorePrep" #-} - corePrepPgm dflags core_binds data_tycons ; - - case hscTarget dflags of - HscNothing -> return (False, False, Nothing) - - HscInterpreted -> -#ifdef GHCI - do ----------------- Generate byte code ------------------ - comp_bc <- byteCodeGen dflags prepd_binds data_tycons - - ------------------ Create f-x-dynamic C-side stuff --- - (istub_h_exists, istub_c_exists) - <- outputForeignStubs dflags this_mod location foreign_stubs - - return ( istub_h_exists, istub_c_exists, Just comp_bc ) -#else - panic "GHC not compiled with interpreter" -#endif - - other -> - do - ----------------- Convert to STG ------------------ - (stg_binds, cost_centre_info) <- {-# SCC "CoreToStg" #-} - myCoreToStg dflags home_mods this_mod prepd_binds - - ------------------ Code generation ------------------ - abstractC <- {-# SCC "CodeGen" #-} - codeGen dflags home_mods this_mod data_tycons - foreign_stubs dir_imps cost_centre_info - stg_binds - - ------------------ Code output ----------------------- - (stub_h_exists, stub_c_exists) - <- codeOutput dflags this_mod location foreign_stubs - dependencies abstractC - - return (stub_h_exists, stub_c_exists, Nothing) - } - hscCmmFile :: DynFlags -> FilePath -> IO Bool hscCmmFile dflags filename = do