%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-2000
%
-
-\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
-
\begin{code}
+-- | Main driver for the compiling plain Haskell source code.
+--
+-- This module implements compilation of a Haskell-only source file. It is
+-- /not/ concerned with preprocessing of source files; this is handled in
+-- "DriverPipeline".
+--
module HscMain
( newHscEnv, hscCmmFile
, hscParseIdentifier
, hscSimplify
- , evalComp
- , hscNormalIface, hscWriteIface, hscOneShot
- , CompState (..)
+ , hscNormalIface, hscWriteIface, hscGenHardCode
#ifdef GHCI
- , hscStmt, hscTcExpr, hscKcType
+ , hscStmt, hscTcExpr, hscImport, hscKcType
, compileExpr
#endif
+ , HsCompiler(..)
+ , hscOneShotCompiler, hscNothingCompiler
+ , hscInteractiveCompiler, hscBatchCompiler
, hscCompileOneShot -- :: Compiler HscStatus
, hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails)
, hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails)
, hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails)
- , HscStatus (..)
- , InteractiveStatus (..)
+ , hscCheckRecompBackend
+ , HscStatus' (..)
+ , InteractiveStatus, HscStatus
-- The new interface
- , parseFile
- , typecheckModule'
- , typecheckRenameModule
- , deSugarModule
+ , hscParse
+ , hscTypecheck
+ , hscTypecheckRename
+ , hscDesugar
, makeSimpleIface
, makeSimpleDetails
) where
import {- Kind parts of -} Type ( Kind )
import CoreLint ( lintUnfolding )
import DsMeta ( templateHaskellNames )
-import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan, noSrcSpan )
+import SrcLoc ( SrcSpan, noSrcLoc, interactiveSrcLoc, srcLocSpan, noSrcSpan, unLoc )
import VarSet
import VarEnv ( emptyTidyEnv )
#endif
import TidyPgm
import CorePrep ( corePrepPgm )
import CoreToStg ( coreToStg )
+import qualified StgCmm ( codeGen )
import StgSyn
import CostCentre
-import TyCon ( isDataTyCon )
+import TyCon ( TyCon, isDataTyCon )
import Name ( Name, NamedThing(..) )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
import Cmm ( Cmm )
+import PprCmm ( pprCmms )
import CmmParse ( parseCmmFile )
+import CmmBuildInfoTables
import CmmCPS
import CmmCPSZ
import CmmInfo
import CmmContFlowOpt
import CodeOutput ( codeOutput )
import NameEnv ( emptyNameEnv )
+import Fingerprint ( Fingerprint )
import DynFlags
import ErrUtils
import HscTypes
import MkExternalCore ( emitExternalCore )
import FastString
-import LazyUniqFM ( emptyUFM )
+import UniqFM ( emptyUFM )
import UniqSupply ( initUs_ )
-import Bag ( unitBag, emptyBag, unionBags )
+import Bag ( unitBag )
import Exception
-import MonadUtils
+-- import MonadUtils
import Control.Monad
-import System.Exit
-import System.IO
+-- import System.IO
import Data.IORef
\end{code}
#include "HsVersions.h"
%************************************************************************
\begin{code}
-newHscEnv :: DynFlags -> IO HscEnv
-newHscEnv dflags
+newHscEnv :: GhcApiCallbacks -> DynFlags -> IO HscEnv
+newHscEnv callbacks dflags
= do { eps_var <- newIORef initExternalPackageState
; us <- mkSplitUniqSupply 'r'
; nc_var <- newIORef (initNameCache us knownKeyNames)
; mlc_var <- newIORef emptyModuleEnv
; optFuel <- initOptFuelState
; return (HscEnv { hsc_dflags = dflags,
+ hsc_callbacks = callbacks,
hsc_targets = [],
hsc_mod_graph = [],
hsc_IC = emptyInteractiveContext,
hsc_type_env_var = Nothing,
hsc_global_rdr_env = emptyGlobalRdrEnv,
hsc_global_type_env = emptyNameEnv } ) }
-
+
knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta,
-- where templateHaskellNames are defined
\begin{code}
-- | parse a file, returning the abstract syntax
-parseFile :: GhcMonad m => HscEnv -> ModSummary -> m (Located (HsModule RdrName))
-parseFile hsc_env mod_summary = do
- maybe_parsed <- liftIO $ myParseModule dflags hspp_file hspp_buf
- case maybe_parsed of
- Left err -> do throw (mkSrcErr (unitBag err))
- Right rdr_module
- -> return rdr_module
- where
- dflags = hsc_dflags hsc_env
- hspp_file = ms_hspp_file mod_summary
- hspp_buf = ms_hspp_buf mod_summary
+hscParse :: GhcMonad m =>
+ ModSummary
+ -> m (Located (HsModule RdrName))
+hscParse mod_summary = do
+ hsc_env <- getSession
+ let dflags = hsc_dflags hsc_env
+ 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 = mkSrcLoc (mkFastString src_filename) 1 1
+
+ case unP parseModule (mkPState dflags buf loc) of
+ PFailed span err ->
+ throwOneError (mkPlainErrMsg span err)
+
+ POk pst rdr_module -> do
+ let ms@(warns,errs) = getMessages pst
+ logWarnings warns
+ if errorsFound dflags ms then
+ liftIO $ throwIO $ mkSrcErr errs
+ else liftIO $ do
+ 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 rdr_module
+ -- ToDo: free the string buffer later.
-- | Rename and typecheck a module
-typecheckModule' :: GhcMonad m =>
- HscEnv -> ModSummary -> Located (HsModule RdrName)
- -> m TcGblEnv
-typecheckModule' hsc_env mod_summary rdr_module = do
+hscTypecheck :: GhcMonad m =>
+ ModSummary -> Located (HsModule RdrName)
+ -> m TcGblEnv
+hscTypecheck mod_summary rdr_module = do
+ hsc_env <- getSession
r <- {-# SCC "Typecheck-Rename" #-}
ioMsgMaybe $ tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module
return r
-- exception/signal an error.
type RenamedStuff =
(Maybe (HsGroup Name, [LImportDecl Name], Maybe [LIE Name],
- Maybe (HsDoc Name), HaddockModInfo Name))
+ Maybe LHsDocString))
-- | Rename and typecheck a module, additionally returning the renamed syntax
-typecheckRenameModule
- :: GhcMonad m =>
- HscEnv -> ModSummary -> Located (HsModule RdrName)
+hscTypecheckRename ::
+ GhcMonad m =>
+ ModSummary -> Located (HsModule RdrName)
-> m (TcGblEnv, RenamedStuff)
-typecheckRenameModule hsc_env mod_summary rdr_module = do
+hscTypecheckRename mod_summary rdr_module = do
+ hsc_env <- getSession
tc_result
<- {-# SCC "Typecheck-Rename" #-}
ioMsgMaybe $ tcRnModule hsc_env (ms_hsc_src mod_summary) True rdr_module
- 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)
+ 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 :: GhcMonad m => HscEnv -> ModSummary -> TcGblEnv -> m ModGuts
-deSugarModule hsc_env mod_summary tc_result = do
+hscDesugar :: GhcMonad m => ModSummary -> TcGblEnv -> m ModGuts
+hscDesugar mod_summary tc_result =
+ withSession $ \hsc_env ->
ioMsgMaybe $ deSugar hsc_env (ms_location mod_summary) tc_result
-- | Make a 'ModIface' from the results of typechecking. Used when
-- 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
- -> IO (ModIface,Bool)
-makeSimpleIface hsc_env maybe_old_iface tc_result details = do
- mkIfaceTc hsc_env (fmap mi_iface_hash maybe_old_iface) details tc_result
+makeSimpleIface :: GhcMonad m =>
+ Maybe ModIface -> TcGblEnv -> ModDetails
+ -> m (ModIface,Bool)
+makeSimpleIface maybe_old_iface tc_result details =
+ withSession $ \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
+makeSimpleDetails :: GhcMonad m => TcGblEnv -> m ModDetails
+makeSimpleDetails tc_result =
+ withSession $ \hsc_env -> liftIO $ mkBootModDetailsTc hsc_env tc_result
\end{code}
%************************************************************************
\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 -> IORef Messages -> IO (a, CompState)}
-
-instance Monad Comp where
- g >>= fn = Comp $ \s r -> runComp g s r >>= \(a,s') -> runComp (fn a) s' r
- return a = Comp $ \s _ -> return (a,s)
- fail = error
-
-evalComp :: Comp a -> CompState -> IO (Messages, a)
-evalComp comp st = do r <- newIORef emptyMessages
- (val,_st') <- runComp comp st r
- msgs <- readIORef r
- return (msgs, val)
-
-logMsgs :: Messages -> Comp ()
-logMsgs (warns', errs') = Comp $ \s r -> do
- (warns, errs) <- readIORef r
- writeIORef r $! ( warns' `unionBags` warns
- , errs' `unionBags` errs )
- return ((), s)
-
-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)
-
-instance MonadIO Comp where
- liftIO ioA = Comp $ \s _ -> do a <- ioA; return (a,s)
-
-type NoRecomp result = ModIface -> Comp result
+ | 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.
+ 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.
-> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs)
-> m result
+data HsCompiler a
+ = HsCompiler {
+ -- | Called when no recompilation is necessary.
+ hscNoRecomp :: GhcMonad m =>
+ ModIface -> m a,
+
+ -- | Called to recompile the module.
+ hscRecompile :: GhcMonad m =>
+ ModSummary -> Maybe Fingerprint -> m a,
+
+ hscBackend :: GhcMonad m =>
+ TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
+
+ -- | Code generation for Boot modules.
+ hscGenBootOutput :: GhcMonad m =>
+ TcGblEnv -> ModSummary -> Maybe Fingerprint -> m a,
+
+ -- | Code generation for normal modules.
+ hscGenOutput :: GhcMonad m =>
+ ModGuts -> ModSummary -> Maybe Fingerprint -> m a
+ }
+
+genericHscCompile :: GhcMonad m =>
+ HsCompiler a
+ -> (Maybe (Int,Int) -> Bool -> ModSummary -> m ())
+ -> HscEnv -> ModSummary -> Bool
+ -> Maybe ModIface -> Maybe (Int, Int)
+ -> m a
+genericHscCompile compiler hscMessage
+ hsc_env mod_summary source_unchanged
+ mb_old_iface0 mb_mod_index =
+ withTempSession (\_ -> hsc_env) $ do
+ (recomp_reqd, mb_checked_iface)
+ <- {-# SCC "checkOldIface" #-}
+ liftIO $ 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 mb_mod_index False mod_summary
+ hscNoRecomp compiler iface
+ _otherwise
+ -> do hscMessage mb_mod_index True mod_summary
+ 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 =
+ withTempSession (\_ -> hsc_env) $ do
+ (recomp_reqd, mb_checked_iface)
+ <- {-# SCC "checkOldIface" #-}
+ liftIO $ 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
+ -> hscNoRecomp compiler iface{ mi_globals = Just (tcg_rdr_env tc_result) }
+ _otherwise
+ -> hscBackend compiler tc_result mod_summary mb_old_hash
+
+genericHscRecompile :: GhcMonad m =>
+ HsCompiler a
+ -> ModSummary -> Maybe Fingerprint
+ -> m 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 :: GhcMonad m =>
+ HsCompiler a
+ -> TcGblEnv -> ModSummary -> Maybe Fingerprint
+ -> m 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
+
--------------------------------------------------------------
-- Compilers
--------------------------------------------------------------
+hscOneShotCompiler :: HsCompiler OneShotResult
+hscOneShotCompiler =
+ HsCompiler {
+
+ hscNoRecomp = \_old_iface -> do
+ withSession (liftIO . dumpIfaceStats)
+ return HscNoRecomp
+
+ , hscRecompile = genericHscRecompile hscOneShotCompiler
+
+ , hscBackend = \ tc_result mod_summary mb_old_hash -> do
+ hsc_env <- getSession
+ case hscTarget (hsc_dflags hsc_env) of
+ HscNothing -> return (HscRecomp False ())
+ _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 False ())
+
+ , 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 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 <- liftIO $ newIORef emptyNameEnv
- let
- mod = ms_mod mod_summary
- hsc_env' = hsc_env{ hsc_type_env_var = Just (mod, type_env_var) }
- ---
- hscCompilerOneShot' hsc_env' mod_summary src_changed mb_old_iface mb_i_of_n
-
-hscCompilerOneShot' :: Compiler HscStatus
-hscCompilerOneShot'
- = 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 <- liftIO $ 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
+
+
+--------------------------------------------------------------
+
+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 False (), 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
+
+--------------------------------------------------------------
+
+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 False 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
+
+--------------------------------------------------------------
+
+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
+ (iface, _changed, details) <- hscSimpleIface tc_result mb_old_iface
+ return (HscRecomp False (), 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
- = ioMsgMaybe $
- 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
--------------------------------------------------------------
-- 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 :: GhcMonad m => ModIface -> m ModDetails
+genModDetails old_iface =
+ withSession $ \hsc_env -> liftIO $ do
+ new_details <- {-# SCC "tcRnIface" #-}
+ initIfaceCheck hsc_env $
+ typecheckIface old_iface
+ dumpIfaceStats hsc_env
+ return new_details
--------------------------------------------------------------
-- Progress displayers.
--------------------------------------------------------------
-oneShotMsg :: Maybe (Int,Int) -> Bool -> Comp ()
-oneShotMsg _mb_mod_index recomp
- = do hsc_env <- gets compHscEnv
+oneShotMsg :: GhcMonad m => Maybe (Int,Int) -> Bool -> ModSummary -> m ()
+oneShotMsg _mb_mod_index recomp _mod_summary
+ = do hsc_env <- getSession
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
+batchMsg :: GhcMonad m => Maybe (Int,Int) -> Bool -> ModSummary -> m ()
+batchMsg mb_mod_index recomp mod_summary
+ = do hsc_env <- getSession
let showMsg msg = compilationProgressMsg (hsc_dflags hsc_env) $
(showModuleIndex mb_mod_index ++
msg ++ showModMsg (hscTarget (hsc_dflags hsc_env)) recomp mod_summary)
--------------------------------------------------------------
-- FrontEnds
--------------------------------------------------------------
-hscFileFrontEnd :: Comp (Maybe TcGblEnv)
-hscFileFrontEnd =
- do hsc_env <- gets compHscEnv
- mod_summary <- gets compModSummary
-
- -------------------
- -- PARSE
- -------------------
- let dflags = hsc_dflags hsc_env
- hspp_file = ms_hspp_file mod_summary
- hspp_buf = ms_hspp_buf mod_summary
- maybe_parsed <- liftIO $ myParseModule dflags hspp_file hspp_buf
- case maybe_parsed of
- Left err
- -> do logMsgs (emptyBag, unitBag err)
- return Nothing
- Right rdr_module
- -------------------
- -- RENAME and TYPECHECK
- -------------------
- -> do (tc_msgs, maybe_tc_result)
- <- {-# SCC "Typecheck-Rename" #-}
- liftIO $ tcRnModule hsc_env (ms_hsc_src mod_summary)
- False rdr_module
- logMsgs tc_msgs
- return maybe_tc_result
-
---------------------------------------------------------------
--- Desugaring
---------------------------------------------------------------
-
-hscDesugar :: TcGblEnv -> Comp (Maybe ModGuts)
-hscDesugar tc_result
- = do mod_summary <- gets compModSummary
- hsc_env <- gets compHscEnv
-
- -------------------
- -- DESUGAR
- -------------------
- (msgs, ds_result)
- <- {-# SCC "DeSugar" #-}
- liftIO $ deSugar hsc_env (ms_location mod_summary) tc_result
- logMsgs msgs
- return ds_result
+hscFileFrontEnd :: GhcMonad m => ModSummary -> m TcGblEnv
+hscFileFrontEnd mod_summary =
+ do rdr_module <- hscParse mod_summary
+ hscTypecheck mod_summary rdr_module
--------------------------------------------------------------
-- Simplifiers
--------------------------------------------------------------
-hscSimplify :: ModGuts -> Comp ModGuts
+hscSimplify :: GhcMonad m => ModGuts -> m ModGuts
hscSimplify ds_result
- = do hsc_env <- gets compHscEnv
- liftIO $ do
- -------------------
- -- SIMPLIFY
- -------------------
+ = do hsc_env <- getSession
simpl_result <- {-# SCC "Core2Core" #-}
- core2core hsc_env ds_result
+ liftIO $ core2core hsc_env ds_result
return simpl_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
+hscSimpleIface :: GhcMonad m =>
+ TcGblEnv
+ -> Maybe Fingerprint
+ -> m (ModIface, Bool, ModDetails)
+hscSimpleIface tc_result mb_old_iface
+ = do hsc_env <- getSession
+ details <- liftIO $ mkBootModDetailsTc hsc_env tc_result
(new_iface, no_change)
<- {-# SCC "MkFinalIface" #-}
- mkIfaceTc hsc_env (fmap mi_iface_hash 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 :: GhcMonad m =>
+ ModGuts
+ -> Maybe Fingerprint
+ -> m (ModIface, Bool, ModDetails, CgGuts)
+hscNormalIface simpl_result mb_old_iface
+ = do hsc_env <- getSession
+
(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 (fmap mi_iface_hash maybe_old_iface)
- details simpl_result
+ <- {-# 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).
- emitExternalCore (hsc_dflags hsc_env) cg_guts
- dumpIfaceStats hsc_env
+ liftIO $ emitExternalCore (hsc_dflags hsc_env) cg_guts
+ liftIO $ dumpIfaceStats hsc_env
- -------------------
-- Return the prepared code.
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
- hsc_env <- gets compHscEnv
+hscWriteIface :: GhcMonad m =>
+ ModIface -> Bool
+ -> ModSummary
+ -> m ()
+hscWriteIface iface no_change mod_summary
+ = do hsc_env <- getSession
let dflags = hsc_dflags hsc_env
liftIO $ do
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
+
+-- | Compile to hard-code.
+hscGenHardCode :: GhcMonad m =>
+ CgGuts -> ModSummary
+ -> m Bool -- ^ @True@ <=> stub.c exists
+hscGenHardCode cgguts mod_summary
+ = withSession $ \hsc_env -> 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_dir_imps = dir_imps,
cg_foreign = foreign_stubs,
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
(stg_binds, cost_centre_info)
<- {-# SCC "CoreToStg" #-}
myCoreToStg dflags this_mod prepd_binds
+
------------------ 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 (hsc_dflags hsc_env)
+ then do cmms <- tryNewCodeGen hsc_env this_mod data_tycons
+ dir_imps cost_centre_info
+ stg_binds hpc_info
+ return cmms
+ else {-# SCC "CodeGen" #-}
+ codeGen dflags this_mod data_tycons
+ dir_imps cost_centre_info
+ stg_binds hpc_info
+
--- Optionally run experimental Cmm transformations ---
- cmms <- optionallyConvertAndOrCPS hsc_env cmms
+ -- cmms <- optionallyConvertAndOrCPS hsc_env cmms
-- unless certain dflags are on, the identity function
------------------ Code output -----------------------
rawcmms <- cmmToRawCmm cmms
+ dumpIfSet_dyn dflags Opt_D_dump_cmmz "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))
+hscInteractive :: GhcMonad m =>
+ (ModIface, ModDetails, CgGuts)
+ -> ModSummary
+ -> m (InteractiveStatus, ModIface, ModDetails)
#ifdef GHCI
-hscInteractive (iface, details, cgguts)
- = do hsc_env <- gets compHscEnv
- mod_summary <- gets compModSummary
+hscInteractive (iface, details, cgguts) mod_summary
+ = do hsc_env <- getSession
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.
------------------ 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))
+ 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
------------------------------
parseCmmFile dflags filename
cmms <- liftIO $ optionallyConvertAndOrCPS hsc_env [cmm]
rawCmms <- liftIO $ cmmToRawCmm cmms
- liftIO $ codeOutput dflags no_mod no_loc NoStubs [] rawCmms
+ _ <- liftIO $ codeOutput dflags no_mod no_loc NoStubs [] rawCmms
return ()
where
no_mod = panic "hscCmmFile: no_mod"
ml_hi_file = panic "hscCmmFile: no hi file",
ml_obj_file = panic "hscCmmFile: no obj file" }
+-------------------- Stuff for new code gen ---------------------
+
+tryNewCodeGen :: HscEnv -> Module -> [TyCon] -> [Module]
+ -> CollectedCCs
+ -> [(StgBinding,[(Id,[Id])])]
+ -> HpcInfo
+ -> IO [Cmm]
+tryNewCodeGen hsc_env this_mod data_tycons imported_mods
+ cost_centre_info stg_binds hpc_info =
+ do { let dflags = hsc_dflags hsc_env
+ ; prog <- StgCmm.codeGen dflags this_mod data_tycons imported_mods
+ cost_centre_info stg_binds hpc_info
+ ; dumpIfSet_dyn dflags Opt_D_dump_cmmz "Cmm produced by new codegen"
+ (pprCmms prog)
+
+ ; prog <- return $ map (runTx $ runCmmOpts cmmCfgOptsZ) prog
+ -- Control flow optimisation
+
+ -- 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 topSRT = initUs_ us emptySRT
+ ; (topSRT, prog) <- foldM (protoCmmCPSZ hsc_env) (topSRT, []) prog
+ -- The main CPS conversion
+
+ ; prog <- return $ map (runTx $ runCmmOpts cmmCfgOptsZ) (srtToData topSRT : prog)
+ -- Control flow optimisation, again
+
+ ; let prog' = map cmmOfZgraph 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
else return cmms
--------- Optionally convert to CPS (MDA) -----------
cmms <- if not (dopt Opt_ConvertToZipCfgAndBack dflags) &&
- dopt Opt_RunCPSZ dflags
+ dopt Opt_RunCPS dflags
then cmmCPS dflags cmms
else return cmms
return cmms
let cvtm = do g <- cmmToZgraph cmm
return $ cfopts g
let zgraph = initUs_ us cvtm
- cps_zgraph <- protoCmmCPSZ hsc_env zgraph
+ us <- mkSplitUniqSupply 'S'
+ let topSRT = initUs_ us emptySRT
+ (_, [cps_zgraph]) <- protoCmmCPSZ hsc_env (topSRT, []) zgraph
let chosen_graph = if dopt Opt_RunCPSZ dflags then cps_zgraph else 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
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; -- XXX
- 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
return $ Just (ids, hval)
+hscImport :: GhcMonad m => HscEnv -> String -> m (ImportDecl RdrName)
+hscImport hsc_env str = do
+ (L _ (HsModule{hsmodImports=is})) <- hscParseThing parseModule (hsc_dflags hsc_env) str
+ case is of
+ [i] -> return (unLoc i)
+ _ -> throwOneError (mkPlainErrMsg noSrcSpan (ptext (sLit "parse error in import declaration")))
hscTcExpr -- Typecheck an expression (but don't run it)
:: GhcMonad m =>
buf <- liftIO $ stringToStringBuffer str
- let loc = mkSrcLoc (fsLit "<interactive>") 1 0
+ let loc = mkSrcLoc (fsLit "<interactive>") 1 1
- case unP parser (mkPState buf loc dflags) of
+ case unP parser (mkPState dflags buf loc) of
PFailed span err -> do
let msg = mkPlainErrMsg span err
i_str = show i
padded = replicate (length n_str - length i_str) ' ' ++ i_str
\end{code}
-
projects / ghc-hetmet.git / blobdiff