X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fmain%2FHscMain.lhs;h=a120926717639da666968e4eb2b53897d1327910;hp=1b7df1ba626a0632bbd5e0101d184ba437a4c5e5;hb=de2d10e18ce23e5df7fa4f3433b85c95d6092b58;hpb=a28f108105065f926702dd03d737b60f298cfa3c diff --git a/compiler/main/HscMain.lhs b/compiler/main/HscMain.lhs index 1b7df1b..a120926 100644 --- a/compiler/main/HscMain.lhs +++ b/compiler/main/HscMain.lhs @@ -1,97 +1,134 @@ % % (c) The GRASP/AQUA Project, Glasgow University, 1993-2000 % - -\section[GHC_Main]{Main driver for Glasgow Haskell compiler} - \begin{code} +-- | Main API for compiling plain Haskell source code. +-- +-- This module implements compilation of a Haskell source. It is +-- /not/ concerned with preprocessing of source files; this is handled +-- in "DriverPipeline". +-- +-- There are various entry points depending on what mode we're in: +-- "batch" mode (@--make@), "one-shot" mode (@-c@, @-S@ etc.), and +-- "interactive" mode (GHCi). There are also entry points for +-- individual passes: parsing, typechecking/renaming, desugaring, and +-- simplification. +-- +-- All the functions here take an 'HscEnv' as a parameter, but none of +-- them return a new one: 'HscEnv' is treated as an immutable value +-- from here on in (although it has mutable components, for the +-- caches). +-- +-- Warning messages are dealt with consistently throughout this API: +-- during compilation warnings are collected, and before any function +-- in @HscMain@ returns, the warnings are either printed, or turned +-- into a real compialtion error if the @-Werror@ flag is enabled. +-- module HscMain - ( newHscEnv, hscCmmFile + ( + -- * Making an HscEnv + newHscEnv + + -- * Compiling complete source files + , Compiler + , HscStatus' (..) + , InteractiveStatus, HscStatus + , hscCompileOneShot + , hscCompileBatch + , hscCompileNothing + , hscCompileInteractive + , hscCompileCmmFile + , hscCompileCore + + -- * Running passes separately + , hscParse + , hscTypecheckRename + , hscDesugar + , makeSimpleIface + , makeSimpleDetails + , hscSimplify -- ToDo, shouldn't really export this + + -- ** Backends + , hscOneShotBackendOnly + , hscBatchBackendOnly + , hscNothingBackendOnly + , hscInteractiveBackendOnly + + -- * Support for interactive evaluation , hscParseIdentifier - , hscSimplify - , evalComp - , hscNormalIface, hscWriteIface, hscOneShot - , CompState (..) + , hscTcRcLookupName + , hscTcRnGetInfo #ifdef GHCI - , hscStmt, hscTcExpr, hscKcType - , compileExpr + , hscRnImportDecls + , hscGetModuleExports + , hscTcRnLookupRdrName + , hscStmt, hscStmtWithLocation + , hscTcExpr, hscImport, hscKcType + , hscCompileCoreExpr #endif - , hscCompileOneShot -- :: Compiler HscStatus - , hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails) - , hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails) - , hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails) - , HscStatus (..) - , InteractiveStatus (..) - - -- The new interface - , parseFile - , typecheckModule - , typecheckRenameModule - , deSugarModule - , makeSimpleIface - , makeSimpleDetails - ) where -#include "HsVersions.h" + ) where #ifdef GHCI -import CodeOutput ( outputForeignStubs ) import ByteCodeGen ( byteCodeGen, coreExprToBCOs ) 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 TcType ( tyVarsOfTypes ) import PrelNames ( iNTERACTIVE ) import {- Kind parts of -} Type ( Kind ) +import Id ( idType ) import CoreLint ( lintUnfolding ) import DsMeta ( templateHaskellNames ) -import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan ) import VarSet import VarEnv ( emptyTidyEnv ) +import Panic #endif -import Var ( Id ) +import Id ( Id ) import Module ( emptyModuleEnv, ModLocation(..), Module ) import RdrName import HsSyn import CoreSyn -import SrcLoc ( Located(..) ) import StringBuffer import Parser -import Lexer -import SrcLoc ( mkSrcLoc ) -import TcRnDriver ( tcRnModule ) +import Lexer hiding (getDynFlags) +import SrcLoc +import TcRnDriver import TcIface ( typecheckIface ) -import TcRnMonad ( initIfaceCheck, TcGblEnv(..) ) +import TcRnMonad import IfaceEnv ( initNameCache ) import LoadIface ( ifaceStats, initExternalPackageState ) import PrelInfo ( wiredInThings, basicKnownKeyNames ) import MkIface -import Desugar ( deSugar ) -import SimplCore ( core2core ) +import Desugar +import SimplCore import TidyPgm -import CorePrep ( corePrepPgm ) +import CorePrep import CoreToStg ( coreToStg ) +import qualified StgCmm ( codeGen ) import StgSyn import CostCentre -import TyCon ( isDataTyCon ) +import ProfInit +import TyCon ( TyCon, isDataTyCon ) import Name ( Name, NamedThing(..) ) import SimplStg ( stg2stg ) import CodeGen ( codeGen ) -import Cmm ( Cmm ) +import OldCmm ( Cmm ) +import PprCmm ( pprCmms ) import CmmParse ( parseCmmFile ) -import CmmCPS -import CmmCPSZ +import CmmBuildInfoTables +import CmmPipeline import CmmInfo +import OptimizationFuel ( initOptFuelState ) import CmmCvt -import CmmTx -import CmmContFlowOpt -import CodeOutput ( codeOutput ) +import CmmContFlowOpt ( runCmmContFlowOpts ) +import CodeOutput import NameEnv ( emptyNameEnv ) +import NameSet ( emptyNameSet ) +import InstEnv +import FamInstEnv ( emptyFamInstEnv ) +import Fingerprint ( Fingerprint ) import DynFlags import ErrUtils @@ -102,15 +139,17 @@ import HscStats ( ppSourceStats ) import HscTypes import MkExternalCore ( emitExternalCore ) import FastString -import LazyUniqFM ( emptyUFM ) +import UniqFM ( emptyUFM ) import UniqSupply ( initUs_ ) -import Bag ( unitBag ) +import Bag +import Exception +-- import MonadUtils import Control.Monad -import System.Exit -import System.IO +-- import System.IO import Data.IORef \end{code} +#include "HsVersions.h" %************************************************************************ @@ -123,110 +162,260 @@ import Data.IORef newHscEnv :: DynFlags -> IO HscEnv newHscEnv dflags = do { eps_var <- newIORef initExternalPackageState - ; us <- mkSplitUniqSupply 'r' - ; nc_var <- newIORef (initNameCache us knownKeyNames) - ; fc_var <- newIORef emptyUFM - ; mlc_var <- newIORef emptyModuleEnv + ; us <- mkSplitUniqSupply 'r' + ; nc_var <- newIORef (initNameCache us knownKeyNames) + ; fc_var <- newIORef emptyUFM + ; mlc_var <- newIORef emptyModuleEnv + ; optFuel <- initOptFuelState ; return (HscEnv { hsc_dflags = dflags, hsc_targets = [], hsc_mod_graph = [], - hsc_IC = emptyInteractiveContext, - hsc_HPT = emptyHomePackageTable, - hsc_EPS = eps_var, - hsc_NC = nc_var, - hsc_FC = fc_var, - hsc_MLC = mlc_var, - hsc_global_rdr_env = emptyGlobalRdrEnv, - hsc_global_type_env = emptyNameEnv } ) } - - -knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta, - -- where templateHaskellNames are defined -knownKeyNames = map getName wiredInThings - ++ basicKnownKeyNames + hsc_IC = emptyInteractiveContext, + hsc_HPT = emptyHomePackageTable, + hsc_EPS = eps_var, + hsc_NC = nc_var, + hsc_FC = fc_var, + hsc_MLC = mlc_var, + hsc_OptFuel = optFuel, + hsc_type_env_var = Nothing } ) } + + +knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta, + -- where templateHaskellNames are defined +knownKeyNames + = map getName wiredInThings + ++ basicKnownKeyNames #ifdef GHCI - ++ templateHaskellNames + ++ templateHaskellNames #endif -\end{code} +-- ----------------------------------------------------------------------------- +-- The Hsc monad: collecting warnings + +newtype Hsc a = Hsc (HscEnv -> WarningMessages -> IO (a, WarningMessages)) + +instance Monad Hsc where + return a = Hsc $ \_ w -> return (a, w) + Hsc m >>= k = Hsc $ \e w -> do (a, w1) <- m e w + case k a of + Hsc k' -> k' e w1 + +instance MonadIO Hsc where + liftIO io = Hsc $ \_ w -> do a <- io; return (a, w) + +runHsc :: HscEnv -> Hsc a -> IO a +runHsc hsc_env (Hsc hsc) = do + (a, w) <- hsc hsc_env emptyBag + printOrThrowWarnings (hsc_dflags hsc_env) w + return a + +getWarnings :: Hsc WarningMessages +getWarnings = Hsc $ \_ w -> return (w, w) + +clearWarnings :: Hsc () +clearWarnings = Hsc $ \_ _w -> return ((), emptyBag) + +logWarnings :: WarningMessages -> Hsc () +logWarnings w = Hsc $ \_ w0 -> return ((), w0 `unionBags` w) + +getHscEnv :: Hsc HscEnv +getHscEnv = Hsc $ \e w -> return (e, w) + +getDynFlags :: Hsc DynFlags +getDynFlags = Hsc $ \e w -> return (hsc_dflags e, w) + +handleWarnings :: Hsc () +handleWarnings = do + dflags <- getDynFlags + w <- getWarnings + liftIO $ printOrThrowWarnings dflags w + clearWarnings + +-- | log warning in the monad, and if there are errors then +-- throw a SourceError exception. +logWarningsReportErrors :: Messages -> Hsc () +logWarningsReportErrors (warns,errs) = do + logWarnings warns + when (not (isEmptyBag errs)) $ do + liftIO $ throwIO $ mkSrcErr errs + +-- | Deal with errors and warnings returned by a compilation step +-- +-- In order to reduce dependencies to other parts of the compiler, functions +-- outside the "main" parts of GHC return warnings and errors as a parameter +-- and signal success via by wrapping the result in a 'Maybe' type. This +-- function logs the returned warnings and propagates errors as exceptions +-- (of type 'SourceError'). +-- +-- This function assumes the following invariants: +-- +-- 1. If the second result indicates success (is of the form 'Just x'), +-- there must be no error messages in the first result. +-- +-- 2. If there are no error messages, but the second result indicates failure +-- there should be warnings in the first result. That is, if the action +-- failed, it must have been due to the warnings (i.e., @-Werror@). +ioMsgMaybe :: IO (Messages, Maybe a) -> Hsc a +ioMsgMaybe ioA = do + ((warns,errs), mb_r) <- liftIO $ ioA + logWarnings warns + case mb_r of + Nothing -> liftIO $ throwIO (mkSrcErr errs) + Just r -> ASSERT( isEmptyBag errs ) return r + +-- | like ioMsgMaybe, except that we ignore error messages and return +-- 'Nothing' instead. +ioMsgMaybe' :: IO (Messages, Maybe a) -> Hsc (Maybe a) +ioMsgMaybe' ioA = do + ((warns,_errs), mb_r) <- liftIO $ ioA + logWarnings warns + return mb_r + +-- ----------------------------------------------------------------------------- +-- | Lookup things in the compiler's environment -\begin{code} +#ifdef GHCI +hscTcRnLookupRdrName :: HscEnv -> RdrName -> IO [Name] +hscTcRnLookupRdrName hsc_env rdr_name = + runHsc hsc_env $ ioMsgMaybe $ tcRnLookupRdrName hsc_env rdr_name +#endif + +hscTcRcLookupName :: HscEnv -> Name -> IO (Maybe TyThing) +hscTcRcLookupName hsc_env name = + runHsc hsc_env $ ioMsgMaybe' $ tcRnLookupName hsc_env name + -- ignore errors: the only error we're likely to get is + -- "name not found", and the Maybe in the return type + -- is used to indicate that. + +hscTcRnGetInfo :: HscEnv -> Name -> IO (Maybe (TyThing, Fixity, [Instance])) +hscTcRnGetInfo hsc_env name = + runHsc hsc_env $ ioMsgMaybe' $ tcRnGetInfo hsc_env name + +#ifdef GHCI +hscGetModuleExports :: HscEnv -> Module -> IO (Maybe [AvailInfo]) +hscGetModuleExports hsc_env mdl = + runHsc hsc_env $ ioMsgMaybe' $ getModuleExports hsc_env mdl + +-- ----------------------------------------------------------------------------- +-- | Rename some import declarations + +hscRnImportDecls + :: HscEnv + -> Module + -> [LImportDecl RdrName] + -> IO GlobalRdrEnv + +-- It is important that we use tcRnImports instead of calling rnImports directly +-- because tcRnImports will force-load any orphan modules necessary, making extra +-- instances/family instances visible (GHC #4832) +hscRnImportDecls hsc_env this_mod import_decls + = runHsc hsc_env $ ioMsgMaybe $ initTc hsc_env HsSrcFile False this_mod $ + fmap tcg_rdr_env $ tcRnImports hsc_env this_mod import_decls + +#endif + +-- ----------------------------------------------------------------------------- -- | parse a file, returning the abstract syntax -parseFile :: HscEnv -> ModSummary -> IO (Maybe (Located (HsModule RdrName))) -parseFile hsc_env mod_summary - = do - maybe_parsed <- myParseModule dflags hspp_file hspp_buf - case maybe_parsed of - Left err - -> do printBagOfErrors dflags (unitBag err) - return Nothing - Right rdr_module - -> return (Just rdr_module) - where - dflags = hsc_dflags hsc_env - hspp_file = ms_hspp_file mod_summary - hspp_buf = ms_hspp_buf mod_summary - --- | Rename and typecheck a module -typecheckModule :: HscEnv -> ModSummary -> Located (HsModule RdrName) - -> IO (Maybe TcGblEnv) -typecheckModule hsc_env mod_summary rdr_module - = do - (tc_msgs, maybe_tc_result) - <- {-# SCC "Typecheck-Rename" #-} - tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module - printErrorsAndWarnings dflags tc_msgs - return maybe_tc_result - where - dflags = hsc_dflags hsc_env +hscParse :: HscEnv -> ModSummary -> IO (Located (HsModule RdrName)) +hscParse hsc_env mod_summary = runHsc hsc_env $ hscParse' mod_summary + +-- internal version, that doesn't fail due to -Werror +hscParse' :: ModSummary -> Hsc (Located (HsModule RdrName)) +hscParse' mod_summary + = do + dflags <- getDynFlags + let + src_filename = ms_hspp_file mod_summary + maybe_src_buf = ms_hspp_buf mod_summary + + -------------------------- Parser ---------------- + liftIO $ showPass dflags "Parser" + {-# SCC "Parser" #-} do + + -- sometimes we already have the buffer in memory, perhaps + -- because we needed to parse the imports out of it, or get the + -- module name. + buf <- case maybe_src_buf of + Just b -> return b + Nothing -> liftIO $ hGetStringBuffer src_filename + + let loc = mkRealSrcLoc (mkFastString src_filename) 1 1 + + case unP parseModule (mkPState dflags buf loc) of + PFailed span err -> + liftIO $ throwOneError (mkPlainErrMsg span err) + + POk pst rdr_module -> do + logWarningsReportErrors (getMessages pst) + liftIO $ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" $ + ppr rdr_module + liftIO $ dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics" $ + ppSourceStats False rdr_module + return rdr_module + -- ToDo: free the string buffer later. + +-- XXX: should this really be a Maybe X? Check under which circumstances this +-- can become a Nothing and decide whether this should instead throw an +-- exception/signal an error. type RenamedStuff = (Maybe (HsGroup Name, [LImportDecl Name], Maybe [LIE Name], - Maybe (HsDoc Name), HaddockModInfo Name)) - --- | Rename and typecheck a module, additinoally returning the renamed syntax -typecheckRenameModule :: HscEnv -> ModSummary -> Located (HsModule RdrName) - -> IO (Maybe (TcGblEnv, RenamedStuff)) -typecheckRenameModule hsc_env mod_summary rdr_module - = do - (tc_msgs, maybe_tc_result) - <- {-# SCC "Typecheck-Rename" #-} - tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module - printErrorsAndWarnings dflags tc_msgs - case maybe_tc_result of - Nothing -> return Nothing - Just tc_result -> do - let rn_info = do decl <- tcg_rn_decls tc_result - imports <- tcg_rn_imports tc_result - let exports = tcg_rn_exports tc_result - let doc = tcg_doc tc_result - let hmi = tcg_hmi tc_result - return (decl,imports,exports,doc,hmi) - return (Just (tc_result, rn_info)) - where - dflags = hsc_dflags hsc_env + Maybe LHsDocString)) + +-- | Rename and typecheck a module, additionally returning the renamed syntax +hscTypecheckRename :: HscEnv -> ModSummary -> Located (HsModule RdrName) + -> IO (TcGblEnv, RenamedStuff) +hscTypecheckRename hsc_env mod_summary rdr_module + = runHsc hsc_env $ do + tc_result + <- {-# SCC "Typecheck-Rename" #-} + ioMsgMaybe $ + tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module + + let -- This 'do' is in the Maybe monad! + rn_info = do decl <- tcg_rn_decls tc_result + let imports = tcg_rn_imports tc_result + exports = tcg_rn_exports tc_result + doc_hdr = tcg_doc_hdr tc_result + return (decl,imports,exports,doc_hdr) + + return (tc_result, rn_info) -- | Convert a typechecked module to Core -deSugarModule :: HscEnv -> ModSummary -> TcGblEnv -> IO (Maybe ModGuts) -deSugarModule hsc_env mod_summary tc_result - = deSugar hsc_env (ms_location mod_summary) tc_result +hscDesugar :: HscEnv -> ModSummary -> TcGblEnv -> IO ModGuts +hscDesugar hsc_env mod_summary tc_result + = runHsc hsc_env $ hscDesugar' mod_summary tc_result + +hscDesugar' :: ModSummary -> TcGblEnv -> Hsc ModGuts +hscDesugar' mod_summary tc_result + = do + hsc_env <- getHscEnv + r <- ioMsgMaybe $ + deSugar hsc_env (ms_location mod_summary) tc_result + + handleWarnings + -- always check -Werror after desugaring, this is + -- the last opportunity for warnings to arise before + -- the backend. + return r -- | Make a 'ModIface' from the results of typechecking. Used when -- not optimising, and the interface doesn't need to contain any -- unfoldings or other cross-module optimisation info. -- ToDo: the old interface is only needed to get the version numbers, -- we should use fingerprint versions instead. -makeSimpleIface :: HscEnv -> Maybe ModIface -> TcGblEnv -> ModDetails +makeSimpleIface :: HscEnv -> + Maybe ModIface -> TcGblEnv -> ModDetails -> IO (ModIface,Bool) -makeSimpleIface hsc_env maybe_old_iface tc_result details = do - mkIfaceTc hsc_env maybe_old_iface details tc_result +makeSimpleIface hsc_env maybe_old_iface tc_result details + = runHsc hsc_env $ + ioMsgMaybe $ + mkIfaceTc hsc_env (fmap mi_iface_hash maybe_old_iface) details tc_result -- | Make a 'ModDetails' from the results of typechecking. Used when -- typechecking only, as opposed to full compilation. makeSimpleDetails :: HscEnv -> TcGblEnv -> IO ModDetails makeSimpleDetails hsc_env tc_result = mkBootModDetailsTc hsc_env tc_result - --- deSugarModule :: HscEnv -> TcGblEnv -> IO Core \end{code} %************************************************************************ @@ -241,7 +430,7 @@ makeSimpleDetails hsc_env tc_result = mkBootModDetailsTc hsc_env tc_result 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 +core files to either byte-code, hard-code (C, asm, LLVM, 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', 'batch', 'nothing', @@ -269,56 +458,27 @@ error. This is the only thing that isn't caught by the type-system. \begin{code} -- Status of a compilation to hard-code or nothing. -data HscStatus +data HscStatus' a = 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 - -- them for us. - --- Status of a compilation to byte-code. -data InteractiveStatus - = InteractiveNoRecomp - | InteractiveRecomp Bool -- Same as HscStatus - CompiledByteCode - ModBreaks - - --- 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 - -evalComp :: Comp a -> CompState -> IO a -evalComp comp st = do (val,_st') <- runComp comp st - return val - -data CompState - = CompState - { compHscEnv :: HscEnv - , compModSummary :: ModSummary - , compOldIface :: Maybe ModIface - } - -get :: Comp CompState -get = Comp $ \s -> return (s,s) - -modify :: (CompState -> CompState) -> Comp () -modify f = Comp $ \s -> return ((), f s) - -gets :: (CompState -> a) -> Comp a -gets getter = do st <- get - return (getter st) - -liftIO :: IO a -> Comp a -liftIO ioA = Comp $ \s -> do a <- ioA - return (a,s) - -type NoRecomp result = ModIface -> Comp result + | HscRecomp + (Maybe FilePath) + -- 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 them for us. + a + +-- This is a bit ugly. Since we use a typeclass below and would like to avoid +-- functional dependencies, we have to parameterise the typeclass over the +-- result type. Therefore we need to artificially distinguish some types. We +-- do this by adding type tags which will simply be ignored by the caller. +type HscStatus = HscStatus' () +type InteractiveStatus = HscStatus' (Maybe (CompiledByteCode, ModBreaks)) + -- INVARIANT: result is @Nothing@ <=> input was a boot file + +type OneShotResult = HscStatus +type BatchResult = (HscStatus, ModIface, ModDetails) +type NothingResult = (HscStatus, ModIface, ModDetails) +type InteractiveResult = (InteractiveStatus, ModIface, ModDetails) -- FIXME: The old interface and module index are only using in 'batch' and -- 'interactive' mode. They should be removed from 'oneshot' mode. @@ -327,149 +487,278 @@ type Compiler result = HscEnv -> Bool -- True <=> source unchanged -> Maybe ModIface -- Old interface, if available -> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs) - -> IO (Maybe result) + -> IO result + +data HsCompiler a + = HsCompiler { + -- | Called when no recompilation is necessary. + hscNoRecomp :: ModIface + -> Hsc a, + + -- | Called to recompile the module. + hscRecompile :: ModSummary -> Maybe Fingerprint + -> Hsc a, + + hscBackend :: TcGblEnv -> ModSummary -> Maybe Fingerprint + -> Hsc a, + + -- | Code generation for Boot modules. + hscGenBootOutput :: TcGblEnv -> ModSummary -> Maybe Fingerprint + -> Hsc a, + + -- | Code generation for normal modules. + hscGenOutput :: ModGuts -> ModSummary -> Maybe Fingerprint + -> Hsc a + } + +genericHscCompile :: HsCompiler a + -> (HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO ()) + -> HscEnv -> ModSummary -> Bool + -> Maybe ModIface -> Maybe (Int, Int) + -> IO a +genericHscCompile compiler hscMessage hsc_env + mod_summary source_unchanged + mb_old_iface0 mb_mod_index + = do + (recomp_reqd, mb_checked_iface) + <- {-# SCC "checkOldIface" #-} + checkOldIface hsc_env mod_summary + source_unchanged mb_old_iface0 + -- save the interface that comes back from checkOldIface. + -- In one-shot mode we don't have the old iface until this + -- point, when checkOldIface reads it from the disk. + let mb_old_hash = fmap mi_iface_hash mb_checked_iface + case mb_checked_iface of + Just iface | not recomp_reqd + -> do hscMessage hsc_env mb_mod_index False mod_summary + runHsc hsc_env $ hscNoRecomp compiler iface + _otherwise + -> do hscMessage hsc_env mb_mod_index True mod_summary + runHsc hsc_env $ hscRecompile compiler mod_summary mb_old_hash + +hscCheckRecompBackend :: HsCompiler a -> TcGblEnv -> Compiler a +hscCheckRecompBackend compiler tc_result + hsc_env mod_summary source_unchanged mb_old_iface _m_of_n + = do + (recomp_reqd, mb_checked_iface) + <- {-# SCC "checkOldIface" #-} + checkOldIface hsc_env mod_summary + source_unchanged mb_old_iface + + let mb_old_hash = fmap mi_iface_hash mb_checked_iface + case mb_checked_iface of + Just iface | not recomp_reqd + -> runHsc hsc_env $ + hscNoRecomp compiler + iface{ mi_globals = Just (tcg_rdr_env tc_result) } + _otherwise + -> runHsc hsc_env $ + hscBackend compiler tc_result mod_summary mb_old_hash + +genericHscRecompile :: HsCompiler a + -> ModSummary -> Maybe Fingerprint + -> Hsc a +genericHscRecompile compiler mod_summary mb_old_hash + | ExtCoreFile <- ms_hsc_src mod_summary = + panic "GHC does not currently support reading External Core files" + | otherwise = do + tc_result <- hscFileFrontEnd mod_summary + hscBackend compiler tc_result mod_summary mb_old_hash + +genericHscBackend :: HsCompiler a + -> TcGblEnv -> ModSummary -> Maybe Fingerprint + -> Hsc a +genericHscBackend compiler tc_result mod_summary mb_old_hash + | HsBootFile <- ms_hsc_src mod_summary = + hscGenBootOutput compiler tc_result mod_summary mb_old_hash + | otherwise = do + guts <- hscDesugar' mod_summary tc_result + hscGenOutput compiler guts mod_summary mb_old_hash + +compilerBackend :: HsCompiler a -> TcGblEnv -> Compiler a +compilerBackend comp tcg hsc_env ms' _ _mb_old_iface _ = + runHsc hsc_env $ + hscBackend comp tcg ms' Nothing -------------------------------------------------------------- -- Compilers -------------------------------------------------------------- +hscOneShotCompiler :: HsCompiler OneShotResult +hscOneShotCompiler = + HsCompiler { + + hscNoRecomp = \_old_iface -> do + hsc_env <- getHscEnv + liftIO $ dumpIfaceStats hsc_env + return HscNoRecomp + + , hscRecompile = genericHscRecompile hscOneShotCompiler + + , hscBackend = \ tc_result mod_summary mb_old_hash -> do + dflags <- getDynFlags + case hscTarget dflags of + HscNothing -> return (HscRecomp Nothing ()) + _otherw -> genericHscBackend hscOneShotCompiler + tc_result mod_summary mb_old_hash + + , hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do + (iface, changed, _) <- hscSimpleIface tc_result mb_old_iface + hscWriteIface iface changed mod_summary + return (HscRecomp Nothing ()) + + , hscGenOutput = \guts0 mod_summary mb_old_iface -> do + guts <- hscSimplify' guts0 + (iface, changed, _details, cgguts) <- hscNormalIface guts mb_old_iface + hscWriteIface iface changed mod_summary + hasStub <- hscGenHardCode cgguts mod_summary + return (HscRecomp hasStub ()) + } + -- Compile Haskell, boot and extCore in OneShot mode. -hscCompileOneShot :: Compiler HscStatus -hscCompileOneShot - = hscCompiler norecompOneShot oneShotMsg (genComp backend boot_backend) - where - backend inp = hscSimplify inp >>= hscNormalIface >>= hscWriteIface >>= hscOneShot - boot_backend inp = hscSimpleIface inp >>= hscWriteIface >> return (Just (HscRecomp False)) +hscCompileOneShot :: Compiler OneShotResult +hscCompileOneShot hsc_env mod_summary src_changed mb_old_iface mb_i_of_n + = do + -- One-shot mode needs a knot-tying mutable variable for interface + -- files. See TcRnTypes.TcGblEnv.tcg_type_env_var. + type_env_var <- newIORef emptyNameEnv + let + mod = ms_mod mod_summary + hsc_env' = hsc_env{ hsc_type_env_var = Just (mod, type_env_var) } + --- + genericHscCompile hscOneShotCompiler + oneShotMsg hsc_env' mod_summary src_changed + mb_old_iface mb_i_of_n + + +hscOneShotBackendOnly :: TcGblEnv -> Compiler OneShotResult +hscOneShotBackendOnly = compilerBackend hscOneShotCompiler + +-------------------------------------------------------------- + +hscBatchCompiler :: HsCompiler BatchResult +hscBatchCompiler = + HsCompiler { + + hscNoRecomp = \iface -> do + details <- genModDetails iface + return (HscNoRecomp, iface, details) + + , hscRecompile = genericHscRecompile hscBatchCompiler + + , hscBackend = genericHscBackend hscBatchCompiler + + , hscGenBootOutput = \tc_result mod_summary mb_old_iface -> do + (iface, changed, details) <- hscSimpleIface tc_result mb_old_iface + hscWriteIface iface changed mod_summary + return (HscRecomp Nothing (), iface, details) + + , hscGenOutput = \guts0 mod_summary mb_old_iface -> do + guts <- hscSimplify' guts0 + (iface, changed, details, cgguts) <- hscNormalIface guts mb_old_iface + hscWriteIface iface changed mod_summary + hasStub <- hscGenHardCode cgguts mod_summary + return (HscRecomp hasStub (), iface, details) + } -- Compile Haskell, boot and extCore in batch mode. hscCompileBatch :: Compiler (HscStatus, ModIface, ModDetails) -hscCompileBatch - = hscCompiler norecompBatch batchMsg (genComp backend boot_backend) - where - backend inp = hscSimplify inp >>= hscNormalIface >>= hscWriteIface >>= hscBatch - boot_backend inp = hscSimpleIface inp >>= hscWriteIface >>= hscNothing +hscCompileBatch = genericHscCompile hscBatchCompiler batchMsg + +hscBatchBackendOnly :: TcGblEnv -> Compiler BatchResult +hscBatchBackendOnly = hscCheckRecompBackend hscBatchCompiler + +-------------------------------------------------------------- + +hscInteractiveCompiler :: HsCompiler InteractiveResult +hscInteractiveCompiler = + HsCompiler { + hscNoRecomp = \iface -> do + details <- genModDetails iface + return (HscNoRecomp, iface, details) + + , hscRecompile = genericHscRecompile hscInteractiveCompiler + + , hscBackend = genericHscBackend hscInteractiveCompiler + + , hscGenBootOutput = \tc_result _mod_summary mb_old_iface -> do + (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface + return (HscRecomp Nothing Nothing, iface, details) + + , hscGenOutput = \guts0 mod_summary mb_old_iface -> do + guts <- hscSimplify' guts0 + (iface, _changed, details, cgguts) <- hscNormalIface guts mb_old_iface + hscInteractive (iface, details, cgguts) mod_summary + } -- Compile Haskell, extCore to bytecode. hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails) -hscCompileInteractive - = hscCompiler norecompInteractive batchMsg (genComp backend boot_backend) - where - backend inp = hscSimplify inp >>= hscNormalIface >>= hscIgnoreIface >>= hscInteractive - boot_backend _ = panic "hscCompileInteractive: HsBootFile" +hscCompileInteractive = genericHscCompile hscInteractiveCompiler batchMsg + +hscInteractiveBackendOnly :: TcGblEnv -> Compiler InteractiveResult +hscInteractiveBackendOnly = compilerBackend hscInteractiveCompiler + +-------------------------------------------------------------- + +hscNothingCompiler :: HsCompiler NothingResult +hscNothingCompiler = + HsCompiler { + hscNoRecomp = \iface -> do + details <- genModDetails iface + return (HscNoRecomp, iface, details) + + , hscRecompile = genericHscRecompile hscNothingCompiler + + , hscBackend = \tc_result _mod_summary mb_old_iface -> do + handleWarnings + (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface + return (HscRecomp Nothing (), iface, details) + + , hscGenBootOutput = \_ _ _ -> + panic "hscCompileNothing: hscGenBootOutput should not be called" + + , hscGenOutput = \_ _ _ -> + panic "hscCompileNothing: hscGenOutput should not be called" + } -- Type-check Haskell and .hs-boot only (no external core) hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails) -hscCompileNothing - = hscCompiler norecompBatch batchMsg comp - where - backend tc = hscSimpleIface tc >>= hscIgnoreIface >>= hscNothing - - comp = do -- genComp doesn't fit here, because we want to omit - -- desugaring and for the backend to take a TcGblEnv - mod_summary <- gets compModSummary - case ms_hsc_src mod_summary of - ExtCoreFile -> panic "hscCompileNothing: cannot do external core" - _other -> do - mb_tc <- hscFileFrontEnd - case mb_tc of - Nothing -> return Nothing - Just tc_result -> backend tc_result - -hscCompiler - :: NoRecomp result -- No recomp necessary - -> (Maybe (Int,Int) -> Bool -> Comp ()) -- Message callback - -> Comp (Maybe result) - -> Compiler result -hscCompiler norecomp messenger recomp hsc_env mod_summary - source_unchanged mbOldIface mbModIndex - = flip evalComp (CompState hsc_env mod_summary mbOldIface) $ - do (recomp_reqd, mbCheckedIface) - <- {-# SCC "checkOldIface" #-} - liftIO $ checkOldIface hsc_env mod_summary - source_unchanged mbOldIface - -- save the interface that comes back from checkOldIface. - -- In one-shot mode we don't have the old iface until this - -- point, when checkOldIface reads it from the disk. - modify (\s -> s{ compOldIface = mbCheckedIface }) - case mbCheckedIface of - Just iface | not recomp_reqd - -> do messenger mbModIndex False - result <- norecomp iface - return (Just result) - _otherwise - -> do messenger mbModIndex True - recomp - --- the usual way to build the Comp (Maybe result) to pass to hscCompiler -genComp :: (ModGuts -> Comp (Maybe a)) - -> (TcGblEnv -> Comp (Maybe a)) - -> Comp (Maybe a) -genComp backend boot_backend = do - mod_summary <- gets compModSummary - case ms_hsc_src mod_summary of - ExtCoreFile -> do - panic "GHC does not currently support reading External Core files" - _not_core -> do - mb_tc <- hscFileFrontEnd - case mb_tc of - Nothing -> return Nothing - Just tc_result -> - case ms_hsc_src mod_summary of - HsBootFile -> boot_backend tc_result - _other -> do - mb_guts <- hscDesugar tc_result - case mb_guts of - Nothing -> return Nothing - Just guts -> backend guts +hscCompileNothing = genericHscCompile hscNothingCompiler batchMsg + +hscNothingBackendOnly :: TcGblEnv -> Compiler NothingResult +hscNothingBackendOnly = compilerBackend hscNothingCompiler -------------------------------------------------------------- -- NoRecomp handlers -------------------------------------------------------------- -norecompOneShot :: NoRecomp HscStatus -norecompOneShot _old_iface - = do hsc_env <- gets compHscEnv - liftIO $ do - dumpIfaceStats hsc_env - return HscNoRecomp - -norecompBatch :: NoRecomp (HscStatus, ModIface, ModDetails) -norecompBatch = norecompWorker HscNoRecomp False - -norecompInteractive :: NoRecomp (InteractiveStatus, ModIface, ModDetails) -norecompInteractive = norecompWorker InteractiveNoRecomp True - -norecompWorker :: a -> Bool -> NoRecomp (a, ModIface, ModDetails) -norecompWorker a _isInterp old_iface - = do hsc_env <- gets compHscEnv - liftIO $ do - new_details <- {-# SCC "tcRnIface" #-} - initIfaceCheck hsc_env $ - typecheckIface old_iface - dumpIfaceStats hsc_env - return (a, old_iface, new_details) +genModDetails :: ModIface -> Hsc ModDetails +genModDetails old_iface + = do + hsc_env <- getHscEnv + new_details <- {-# SCC "tcRnIface" #-} + liftIO $ initIfaceCheck hsc_env $ + typecheckIface old_iface + liftIO $ dumpIfaceStats hsc_env + return new_details -------------------------------------------------------------- -- Progress displayers. -------------------------------------------------------------- -oneShotMsg :: Maybe (Int,Int) -> Bool -> Comp () -oneShotMsg _mb_mod_index recomp - = do hsc_env <- gets compHscEnv - liftIO $ do +oneShotMsg :: HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO () +oneShotMsg hsc_env _mb_mod_index recomp _mod_summary = 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 +batchMsg :: HscEnv -> Maybe (Int,Int) -> Bool -> ModSummary -> IO () +batchMsg hsc_env mb_mod_index recomp mod_summary + = do 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 if verbosity (hsc_dflags hsc_env) >= 2 @@ -479,109 +768,73 @@ batchMsg mb_mod_index recomp -------------------------------------------------------------- -- FrontEnds -------------------------------------------------------------- -hscFileFrontEnd :: Comp (Maybe TcGblEnv) -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 - return maybe_tc_result --------------------------------------------------------------- --- Desugaring --------------------------------------------------------------- - -hscDesugar :: TcGblEnv -> Comp (Maybe ModGuts) -hscDesugar tc_result - = do mod_summary <- gets compModSummary - hsc_env <- gets compHscEnv - liftIO $ do - ------------------- - -- DESUGAR - ------------------- - ds_result <- {-# SCC "DeSugar" #-} - deSugar hsc_env (ms_location mod_summary) tc_result - return ds_result +hscFileFrontEnd :: ModSummary -> Hsc TcGblEnv +hscFileFrontEnd mod_summary = + do rdr_module <- hscParse' mod_summary + hsc_env <- getHscEnv + {-# SCC "Typecheck-Rename" #-} + ioMsgMaybe $ + tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module -------------------------------------------------------------- -- Simplifiers -------------------------------------------------------------- -hscSimplify :: ModGuts -> Comp ModGuts -hscSimplify ds_result - = do hsc_env <- gets compHscEnv - liftIO $ do - ------------------- - -- SIMPLIFY - ------------------- - simpl_result <- {-# SCC "Core2Core" #-} - core2core hsc_env ds_result - return simpl_result +hscSimplify :: HscEnv -> ModGuts -> IO ModGuts +hscSimplify hsc_env modguts = runHsc hsc_env $ hscSimplify' modguts + +hscSimplify' :: ModGuts -> Hsc ModGuts +hscSimplify' ds_result + = do hsc_env <- getHscEnv + {-# SCC "Core2Core" #-} + liftIO $ core2core hsc_env ds_result -------------------------------------------------------------- -- Interface generators -------------------------------------------------------------- --- 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 :: TcGblEnv -> Comp (ModIface, Bool, ModDetails, TcGblEnv) -hscSimpleIface tc_result - = do hsc_env <- gets compHscEnv - maybe_old_iface <- gets compOldIface - liftIO $ do - details <- mkBootModDetailsTc hsc_env tc_result - (new_iface, no_change) +hscSimpleIface :: TcGblEnv + -> Maybe Fingerprint + -> Hsc (ModIface, Bool, ModDetails) +hscSimpleIface tc_result mb_old_iface + = do + hsc_env <- getHscEnv + details <- liftIO $ mkBootModDetailsTc hsc_env tc_result + (new_iface, no_change) <- {-# SCC "MkFinalIface" #-} - mkIfaceTc hsc_env maybe_old_iface details tc_result + ioMsgMaybe $ + mkIfaceTc hsc_env mb_old_iface details tc_result -- And the answer is ... - dumpIfaceStats hsc_env - return (new_iface, no_change, details, tc_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 - ------------------- + liftIO $ dumpIfaceStats hsc_env + return (new_iface, no_change, details) + +hscNormalIface :: ModGuts + -> Maybe Fingerprint + -> Hsc (ModIface, Bool, ModDetails, CgGuts) +hscNormalIface simpl_result mb_old_iface + = do + hsc_env <- getHscEnv (cg_guts, details) <- {-# SCC "CoreTidy" #-} - tidyProgram hsc_env simpl_result + liftIO $ tidyProgram hsc_env simpl_result - ------------------- -- 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 details simpl_result - -- Emit external core - emitExternalCore (hsc_dflags hsc_env) (availsToNameSet (mg_exports simpl_result)) cg_guts -- Move this? --Lemmih 03/07/2006 - dumpIfaceStats hsc_env + <- {-# SCC "MkFinalIface" #-} + ioMsgMaybe $ + mkIface hsc_env mb_old_iface details simpl_result + + -- Emit external core + -- This should definitely be here and not after CorePrep, + -- because CorePrep produces unqualified constructor wrapper declarations, + -- so its output isn't valid External Core (without some preprocessing). + liftIO $ emitExternalCore (hsc_dflags hsc_env) cg_guts + liftIO $ dumpIfaceStats hsc_env - ------------------- -- Return the prepared code. return (new_iface, no_change, details, cg_guts) @@ -589,52 +842,31 @@ hscNormalIface simpl_result -- BackEnd combinators -------------------------------------------------------------- -hscWriteIface :: (ModIface, Bool, ModDetails, a) -> Comp (ModIface, ModDetails, a) -hscWriteIface (iface, no_change, details, a) - = do mod_summary <- gets compModSummary - hsc_env <- gets compHscEnv - let dflags = hsc_dflags hsc_env - liftIO $ do +hscWriteIface :: ModIface + -> Bool + -> ModSummary + -> Hsc () + +hscWriteIface iface no_change mod_summary + = do dflags <- getDynFlags unless no_change - $ writeIfaceFile dflags (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. -hscNothing :: (ModIface, ModDetails, a) -> Comp (Maybe (HscStatus, ModIface, ModDetails)) -hscNothing (iface, details, _) - = return (Just (HscRecomp False, iface, details)) - --- Generate code and return both the new ModIface and the ModDetails. -hscBatch :: (ModIface, ModDetails, CgGuts) -> Comp (Maybe (HscStatus, ModIface, ModDetails)) -hscBatch (iface, details, cgguts) - = do hasStub <- hscCompile cgguts - return (Just (HscRecomp hasStub, iface, details)) - --- Here we don't need the ModIface and ModDetails anymore. -hscOneShot :: (ModIface, ModDetails, CgGuts) -> Comp (Maybe HscStatus) -hscOneShot (_, _, cgguts) - = do hasStub <- hscCompile cgguts - return (Just (HscRecomp hasStub)) - --- Compile to hard-code. -hscCompile :: CgGuts -> Comp Bool -hscCompile cgguts - = do hsc_env <- gets compHscEnv - mod_summary <- gets compModSummary - liftIO $ do + $ liftIO $ writeIfaceFile dflags (ms_location mod_summary) iface + +-- | Compile to hard-code. +hscGenHardCode :: CgGuts -> ModSummary + -> Hsc (Maybe FilePath) -- ^ @Just f@ <=> _stub.c is f +hscGenHardCode cgguts mod_summary + = do + hsc_env <- getHscEnv + 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_dir_imps = dir_imps, - cg_foreign = foreign_stubs, + cg_foreign = foreign_stubs0, cg_dep_pkgs = dependencies, - cg_hpc_info = hpc_info } = cgguts + cg_hpc_info = hpc_info } = cgguts dflags = hsc_dflags hsc_env location = ms_location mod_summary data_tycons = filter isDataTyCon tycons @@ -650,28 +882,40 @@ hscCompile cgguts (stg_binds, cost_centre_info) <- {-# SCC "CoreToStg" #-} myCoreToStg dflags this_mod prepd_binds + + let prof_init = profilingInitCode this_mod cost_centre_info + foreign_stubs = foreign_stubs0 `appendStubC` prof_init + ------------------ Code generation ------------------ - cmms <- {-# SCC "CodeGen" #-} - codeGen dflags this_mod data_tycons - dir_imps cost_centre_info - stg_binds hpc_info + + cmms <- if dopt Opt_TryNewCodeGen dflags + then do cmms <- tryNewCodeGen hsc_env this_mod data_tycons + cost_centre_info + stg_binds hpc_info + return cmms + else {-# SCC "CodeGen" #-} + codeGen dflags this_mod data_tycons + cost_centre_info + stg_binds hpc_info + --- Optionally run experimental Cmm transformations --- - cmms <- optionallyConvertAndOrCPS dflags cmms - -- ^ unless certain dflags are on, the identity function + cmms <- optionallyConvertAndOrCPS hsc_env cmms + -- unless certain dflags are on, the identity function ------------------ Code output ----------------------- rawcmms <- cmmToRawCmm cmms + dumpIfSet_dyn dflags Opt_D_dump_raw_cmm "Raw Cmm" (ppr rawcmms) (_stub_h_exists, stub_c_exists) <- codeOutput dflags this_mod location foreign_stubs dependencies rawcmms return stub_c_exists hscInteractive :: (ModIface, ModDetails, CgGuts) - -> Comp (Maybe (InteractiveStatus, ModIface, ModDetails)) + -> ModSummary + -> Hsc (InteractiveStatus, ModIface, ModDetails) #ifdef GHCI -hscInteractive (iface, details, cgguts) - = do hsc_env <- gets compHscEnv - mod_summary <- gets compModSummary - liftIO $ do +hscInteractive (iface, details, cgguts) mod_summary + = do + dflags <- getDynFlags 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, @@ -679,7 +923,7 @@ hscInteractive (iface, details, cgguts) cg_tycons = tycons, cg_foreign = foreign_stubs, cg_modBreaks = mod_breaks } = cgguts - dflags = hsc_dflags hsc_env + location = ms_location mod_summary data_tycons = filter isDataTyCon tycons -- cg_tycons includes newtypes, for the benefit of External Core, @@ -689,103 +933,93 @@ hscInteractive (iface, details, cgguts) -- PREPARE FOR CODE GENERATION -- Do saturation and convert to A-normal form prepd_binds <- {-# SCC "CorePrep" #-} - corePrepPgm dflags core_binds data_tycons ; + liftIO $ corePrepPgm dflags core_binds data_tycons ; ----------------- Generate byte code ------------------ - comp_bc <- byteCodeGen dflags prepd_binds data_tycons mod_breaks + comp_bc <- liftIO $ byteCodeGen dflags prepd_binds data_tycons mod_breaks ------------------ Create f-x-dynamic C-side stuff --- (_istub_h_exists, istub_c_exists) - <- outputForeignStubs dflags this_mod location foreign_stubs - return (Just (InteractiveRecomp istub_c_exists comp_bc mod_breaks, iface, details)) + <- liftIO $ outputForeignStubs dflags this_mod + location foreign_stubs + return (HscRecomp istub_c_exists (Just (comp_bc, mod_breaks)) + , iface, details) #else -hscInteractive _ = panic "GHC not compiled with interpreter" +hscInteractive _ _ = panic "GHC not compiled with interpreter" #endif ------------------------------ -hscCmmFile :: DynFlags -> FilePath -> IO Bool -hscCmmFile dflags filename = do - maybe_cmm <- parseCmmFile dflags filename - case maybe_cmm of - Nothing -> return False - Just cmm -> do - cmms <- optionallyConvertAndOrCPS dflags [cmm] +hscCompileCmmFile :: HscEnv -> FilePath -> IO () +hscCompileCmmFile hsc_env filename + = runHsc hsc_env $ do + let dflags = hsc_dflags hsc_env + cmm <- ioMsgMaybe $ parseCmmFile dflags filename + liftIO $ do + cmms <- optionallyConvertAndOrCPS hsc_env [cmm] rawCmms <- cmmToRawCmm cmms - codeOutput dflags no_mod no_loc NoStubs [] rawCmms - return True + _ <- codeOutput dflags no_mod no_loc NoStubs [] rawCmms + return () where no_mod = panic "hscCmmFile: no_mod" no_loc = ModLocation{ ml_hs_file = Just filename, ml_hi_file = panic "hscCmmFile: no hi file", ml_obj_file = panic "hscCmmFile: no obj file" } -optionallyConvertAndOrCPS :: DynFlags -> [Cmm] -> IO [Cmm] -optionallyConvertAndOrCPS dflags cmms = - do -------- Optionally convert to and from zipper ------ +-------------------- Stuff for new code gen --------------------- + +tryNewCodeGen :: HscEnv -> Module -> [TyCon] + -> CollectedCCs + -> [(StgBinding,[(Id,[Id])])] + -> HpcInfo + -> IO [Cmm] +tryNewCodeGen hsc_env this_mod data_tycons + cost_centre_info stg_binds hpc_info = + do { let dflags = hsc_dflags hsc_env + ; prog <- StgCmm.codeGen dflags this_mod data_tycons + cost_centre_info stg_binds hpc_info + ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Cmm produced by new codegen" + (pprCmms prog) + + -- We are building a single SRT for the entire module, so + -- we must thread it through all the procedures as we cps-convert them. + ; us <- mkSplitUniqSupply 'S' + ; let initTopSRT = initUs_ us emptySRT + ; (topSRT, prog) <- foldM (cmmPipeline hsc_env) (initTopSRT, []) prog + + ; let prog' = map cmmOfZgraph (srtToData topSRT : prog) + ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Output Cmm" (ppr prog') + ; return prog' } + + +optionallyConvertAndOrCPS :: HscEnv -> [Cmm] -> IO [Cmm] +optionallyConvertAndOrCPS hsc_env cmms = + do let dflags = hsc_dflags hsc_env + -------- Optionally convert to and from zipper ------ cmms <- if dopt Opt_ConvertToZipCfgAndBack dflags - then mapM (testCmmConversion dflags) cmms - else return cmms - --------- Optionally convert to CPS (MDA) ----------- - cmms <- if not (dopt Opt_ConvertToZipCfgAndBack dflags) && - dopt Opt_RunCPSZ dflags - then cmmCPS dflags cmms + then mapM (testCmmConversion hsc_env) cmms else return cmms return cmms -testCmmConversion :: DynFlags -> Cmm -> IO Cmm -testCmmConversion dflags cmm = - do showPass dflags "CmmToCmm" +testCmmConversion :: HscEnv -> Cmm -> IO Cmm +testCmmConversion hsc_env cmm = + do let dflags = hsc_dflags hsc_env + showPass dflags "CmmToCmm" dumpIfSet_dyn dflags Opt_D_dump_cvt_cmm "C-- pre-conversion" (ppr cmm) --continuationC <- cmmCPS dflags abstractC >>= cmmToRawCmm us <- mkSplitUniqSupply 'C' - let cfopts = runTx $ runCmmOpts cmmCfgOptsZ - let cvtm = do g <- cmmToZgraph cmm - return $ cfopts g - let zgraph = initUs_ us cvtm - cps_zgraph <- protoCmmCPSZ dflags zgraph - let chosen_graph = if dopt Opt_RunCPSZ dflags then cps_zgraph else zgraph + let zgraph = initUs_ us (cmmToZgraph cmm) + chosen_graph <- + if dopt Opt_RunCPSZ dflags + then do us <- mkSplitUniqSupply 'S' + let topSRT = initUs_ us emptySRT + (_, [zgraph]) <- cmmPipeline hsc_env (topSRT, []) zgraph + return zgraph + else return (runCmmContFlowOpts zgraph) dumpIfSet_dyn dflags Opt_D_dump_cmmz "C-- Zipper Graph" (ppr chosen_graph) showPass dflags "Convert from Z back to Cmm" - let cvt = cmmOfZgraph $ cfopts $ chosen_graph + let cvt = cmmOfZgraph chosen_graph dumpIfSet_dyn dflags Opt_D_dump_cvt_cmm "C-- post-conversion" (ppr cvt) return cvt - -- return cmm -- don't use the conversion - -myParseModule :: DynFlags -> FilePath -> Maybe StringBuffer - -> IO (Either ErrMsg (Located (HsModule RdrName))) -myParseModule dflags src_filename maybe_src_buf - = -------------------------- Parser ---------------- - showPass dflags "Parser" >> - {-# SCC "Parser" #-} do - - -- sometimes we already have the buffer in memory, perhaps - -- because we needed to parse the imports out of it, or get the - -- module name. - buf <- case maybe_src_buf of - Just b -> return b - Nothing -> hGetStringBuffer src_filename - - let loc = mkSrcLoc (mkFastString src_filename) 1 0 - - case unP parseModule (mkPState buf loc dflags) of { - - PFailed span err -> return (Left (mkPlainErrMsg span err)); - - POk pst rdr_module -> do { - - let {ms = getMessages pst}; - printErrorsAndWarnings dflags ms; - when (errorsFound dflags ms) $ exitWith (ExitFailure 1); - - dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ; - - dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics" - (ppSourceStats False rdr_module) ; - - return (Right rdr_module) - -- ToDo: free the string buffer later. - }} - myCoreToStg :: DynFlags -> Module -> [CoreBind] -> IO ( [(StgBinding,[(Id,[Id])])] -- output program @@ -841,110 +1075,169 @@ hscStmt -- Compile a stmt all the way to an HValue, but don't run it :: HscEnv -> String -- The statement -> IO (Maybe ([Id], HValue)) + -- ^ 'Nothing' <==> empty statement (or comment only), but no parse error +hscStmt hsc_env stmt = hscStmtWithLocation hsc_env stmt "" 1 -hscStmt hsc_env stmt - = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) stmt - ; case maybe_stmt of { - Nothing -> return Nothing ; -- Parse error - Just Nothing -> return Nothing ; -- Empty line - Just (Just parsed_stmt) -> do { -- The real stuff - - -- Rename and typecheck it - let icontext = hsc_IC hsc_env - ; maybe_tc_result <- tcRnStmt hsc_env icontext parsed_stmt - - ; case maybe_tc_result of { - Nothing -> return Nothing ; - Just (ids, tc_expr) -> do { - - -- Desugar it - ; let rdr_env = ic_rn_gbl_env icontext - type_env = mkTypeEnv (map AnId (ic_tmp_ids icontext)) - ; mb_ds_expr <- deSugarExpr hsc_env iNTERACTIVE rdr_env type_env tc_expr - - ; case mb_ds_expr of { - Nothing -> return Nothing ; - Just ds_expr -> do { - - -- Then desugar, code gen, and link it - ; let src_span = srcLocSpan interactiveSrcLoc - ; hval <- compileExpr hsc_env src_span ds_expr - - ; return (Just (ids, hval)) - }}}}}}} +hscStmtWithLocation -- Compile a stmt all the way to an HValue, but don't run it + :: HscEnv + -> String -- The statement + -> String -- the source + -> Int -- ^ starting line + -> IO (Maybe ([Id], HValue)) + -- ^ 'Nothing' <==> empty statement (or comment only), but no parse error +hscStmtWithLocation hsc_env stmt source linenumber = runHsc hsc_env $ do + maybe_stmt <- hscParseStmtWithLocation source linenumber stmt + case maybe_stmt of + Nothing -> return Nothing + Just parsed_stmt -> do -- The real stuff + + -- Rename and typecheck it + let icontext = hsc_IC hsc_env + (ids, tc_expr) <- ioMsgMaybe $ + tcRnStmt hsc_env icontext parsed_stmt + -- Desugar it + let rdr_env = ic_rn_gbl_env icontext + type_env = mkTypeEnv (map AnId (ic_tmp_ids icontext)) + ds_expr <- ioMsgMaybe $ + deSugarExpr hsc_env iNTERACTIVE rdr_env type_env tc_expr + handleWarnings + + -- Then desugar, code gen, and link it + let src_span = srcLocSpan interactiveSrcLoc + hsc_env <- getHscEnv + hval <- liftIO $ hscCompileCoreExpr hsc_env src_span ds_expr + + return $ Just (ids, hval) + +hscImport :: HscEnv -> String -> IO (ImportDecl RdrName) +hscImport hsc_env str = runHsc hsc_env $ do + (L _ (HsModule{hsmodImports=is})) <- + hscParseThing parseModule str + case is of + [i] -> return (unLoc i) + _ -> liftIO $ throwOneError $ + mkPlainErrMsg noSrcSpan $ + ptext (sLit "parse error in import declaration") hscTcExpr -- Typecheck an expression (but don't run it) :: HscEnv -> String -- The expression - -> IO (Maybe Type) - -hscTcExpr hsc_env expr - = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) expr - ; let icontext = hsc_IC hsc_env - ; case maybe_stmt of { - Nothing -> return Nothing ; -- Parse error - Just (Just (L _ (ExprStmt expr _ _))) - -> tcRnExpr hsc_env icontext expr ; - Just _ -> do { errorMsg (hsc_dflags hsc_env) (text "not an expression:" <+> quotes (text expr)) ; - return Nothing } ; - } } - -hscKcType -- Find the kind of a type + -> IO Type + +hscTcExpr hsc_env expr = runHsc hsc_env $ do + maybe_stmt <- hscParseStmt expr + case maybe_stmt of + Just (L _ (ExprStmt expr _ _ _)) -> + ioMsgMaybe $ tcRnExpr hsc_env (hsc_IC hsc_env) expr + _ -> + liftIO $ throwIO $ mkSrcErr $ unitBag $ mkPlainErrMsg noSrcSpan + (text "not an expression:" <+> quotes (text expr)) + +-- | Find the kind of a type +hscKcType :: HscEnv - -> String -- The type - -> IO (Maybe Kind) - -hscKcType hsc_env str - = do { maybe_type <- hscParseType (hsc_dflags hsc_env) str - ; let icontext = hsc_IC hsc_env - ; case maybe_type of { - Just ty -> tcRnType hsc_env icontext ty ; - Nothing -> return Nothing } } + -> String -- ^ The type + -> IO Kind + +hscKcType hsc_env str = runHsc hsc_env $ do + ty <- hscParseType str + ioMsgMaybe $ tcRnType hsc_env (hsc_IC hsc_env) ty + #endif \end{code} \begin{code} #ifdef GHCI -hscParseStmt :: DynFlags -> String -> IO (Maybe (Maybe (LStmt RdrName))) +hscParseStmt :: String -> Hsc (Maybe (LStmt RdrName)) hscParseStmt = hscParseThing parseStmt -hscParseType :: DynFlags -> String -> IO (Maybe (LHsType RdrName)) +hscParseStmtWithLocation :: String -> Int + -> String -> Hsc (Maybe (LStmt RdrName)) +hscParseStmtWithLocation source linenumber stmt = + hscParseThingWithLocation source linenumber parseStmt stmt + +hscParseType :: String -> Hsc (LHsType RdrName) hscParseType = hscParseThing parseType #endif -hscParseIdentifier :: DynFlags -> String -> IO (Maybe (Located RdrName)) -hscParseIdentifier = hscParseThing parseIdentifier +hscParseIdentifier :: HscEnv -> String -> IO (Located RdrName) +hscParseIdentifier hsc_env str = runHsc hsc_env $ + hscParseThing parseIdentifier str -hscParseThing :: Outputable thing +hscParseThing :: (Outputable thing) => Lexer.P thing - -> DynFlags -> String - -> IO (Maybe thing) - -- Nothing => Parse error (message already printed) - -- Just x => success -hscParseThing parser dflags str - = showPass dflags "Parser" >> - {-# SCC "Parser" #-} do - - buf <- stringToStringBuffer str - - let loc = mkSrcLoc FSLIT("") 1 0 - - case unP parser (mkPState buf loc dflags) of { - - PFailed span err -> do { printError span err; - return Nothing }; - - POk pst thing -> do { - - let {ms = getMessages pst}; - printErrorsAndWarnings dflags ms; - when (errorsFound dflags ms) $ exitWith (ExitFailure 1); + -> String + -> Hsc thing +hscParseThing = hscParseThingWithLocation "" 1 + +hscParseThingWithLocation :: (Outputable thing) + => String -> Int + -> Lexer.P thing + -> String + -> Hsc thing +hscParseThingWithLocation source linenumber parser str + = {-# SCC "Parser" #-} do + dflags <- getDynFlags + liftIO $ showPass dflags "Parser" + + let buf = stringToStringBuffer str + loc = mkRealSrcLoc (fsLit source) linenumber 1 + + case unP parser (mkPState dflags buf loc) of + + PFailed span err -> do + let msg = mkPlainErrMsg span err + liftIO $ throwIO (mkSrcErr (unitBag msg)) + + POk pst thing -> do + logWarningsReportErrors (getMessages pst) + liftIO $ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr thing) + return thing +\end{code} - --ToDo: can't free the string buffer until we've finished this - -- compilation sweep and all the identifiers have gone away. - dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr thing); - return (Just thing) - }} +\begin{code} +hscCompileCore :: HscEnv + -> Bool + -> ModSummary + -> [CoreBind] + -> IO () + +hscCompileCore hsc_env simplify mod_summary binds + = runHsc hsc_env $ do + let maybe_simplify mod_guts | simplify = hscSimplify' mod_guts + | otherwise = return mod_guts + guts <- maybe_simplify (mkModGuts (ms_mod mod_summary) binds) + (iface, changed, _details, cgguts) <- hscNormalIface guts Nothing + hscWriteIface iface changed mod_summary + _ <- hscGenHardCode cgguts mod_summary + return () + +-- Makes a "vanilla" ModGuts. +mkModGuts :: Module -> [CoreBind] -> ModGuts +mkModGuts mod binds = ModGuts { + mg_module = mod, + mg_boot = False, + mg_exports = [], + mg_deps = noDependencies, + mg_dir_imps = emptyModuleEnv, + mg_used_names = emptyNameSet, + mg_rdr_env = emptyGlobalRdrEnv, + mg_fix_env = emptyFixityEnv, + mg_types = emptyTypeEnv, + mg_insts = [], + mg_fam_insts = [], + mg_rules = [], + mg_vect_decls = [], + mg_binds = binds, + mg_foreign = NoStubs, + mg_warns = NoWarnings, + mg_anns = [], + mg_hpc_info = emptyHpcInfo False, + mg_modBreaks = emptyModBreaks, + mg_vect_info = noVectInfo, + mg_inst_env = emptyInstEnv, + mg_fam_inst_env = emptyFamInstEnv +} \end{code} %************************************************************************ @@ -955,44 +1248,42 @@ hscParseThing parser dflags str \begin{code} #ifdef GHCI -compileExpr :: HscEnv -> SrcSpan -> CoreExpr -> IO HValue - -compileExpr hsc_env srcspan ds_expr - = do { let { dflags = hsc_dflags hsc_env ; - lint_on = dopt Opt_DoCoreLinting dflags } - - -- Flatten it - ; flat_expr <- flattenExpr hsc_env ds_expr - - -- Simplify it - ; simpl_expr <- simplifyExpr dflags flat_expr - - -- Tidy it (temporary, until coreSat does cloning) - ; let tidy_expr = tidyExpr emptyTidyEnv simpl_expr - - -- Prepare for codegen - ; prepd_expr <- corePrepExpr dflags tidy_expr - - -- Lint if necessary - -- ToDo: improve SrcLoc - ; if lint_on then - let ictxt = hsc_IC hsc_env - tyvars = varSetElems (ic_tyvars ictxt) - in - case lintUnfolding noSrcLoc tyvars prepd_expr of - Just err -> pprPanic "compileExpr" err - Nothing -> return () - else - return () - - -- Convert to BCOs - ; bcos <- coreExprToBCOs dflags prepd_expr - - -- link it - ; hval <- linkExpr hsc_env srcspan bcos - - ; return hval - } +hscCompileCoreExpr :: HscEnv -> SrcSpan -> CoreExpr -> IO HValue +hscCompileCoreExpr hsc_env srcspan ds_expr + | rtsIsProfiled + = throwIO (InstallationError "You can't call hscCompileCoreExpr in a profiled compiler") + -- Otherwise you get a seg-fault when you run it + + | otherwise = do + let dflags = hsc_dflags hsc_env + let lint_on = dopt Opt_DoCoreLinting dflags + + -- Simplify it + simpl_expr <- simplifyExpr dflags ds_expr + + -- Tidy it (temporary, until coreSat does cloning) + let tidy_expr = tidyExpr emptyTidyEnv simpl_expr + + -- Prepare for codegen + prepd_expr <- corePrepExpr dflags tidy_expr + + -- Lint if necessary + -- ToDo: improve SrcLoc + when lint_on $ + let ictxt = hsc_IC hsc_env + tyvars = varSetElems (tyVarsOfTypes (map idType (ic_tmp_ids ictxt))) + in + case lintUnfolding noSrcLoc tyvars prepd_expr of + Just err -> pprPanic "hscCompileCoreExpr" err + Nothing -> return () + + -- Convert to BCOs + bcos <- coreExprToBCOs dflags prepd_expr + + -- link it + hval <- linkExpr hsc_env srcspan bcos + + return hval #endif \end{code} @@ -1031,4 +1322,3 @@ showModuleIndex (Just (i,n)) = "[" ++ padded ++ " of " ++ n_str ++ "] " i_str = show i padded = replicate (length n_str - length i_str) ' ' ++ i_str \end{code} -