-- The official GHC API
import qualified GHC
-import GHC ( Session, DynFlags(..), GhcMode(..), HscTarget(..) )
+import GHC ( Session, DynFlags(..), GhcMode(..), HscTarget(..),
+ LoadHowMuch(..), dopt, DynFlag(..) )
import CmdLineParser
-- Implementations of the various modes (--show-iface, mkdependHS. etc.)
import MkIface ( showIface )
-import DriverPipeline ( oneShot )
+import DriverPipeline ( oneShot, compileFile )
import DriverMkDepend ( doMkDependHS )
import SysTools ( getTopDir, getUsageMsgPaths )
#ifdef GHCI
-- Various other random stuff that we need
import Config ( cProjectVersion, cBooterVersion, cProjectName )
import Packages ( dumpPackages, initPackages )
-import DriverPhases ( Phase(..), isSourceFilename, anyHsc )
-import StaticFlags ( staticFlags, v_Ld_inputs )
+import DriverPhases ( Phase(..), isSourceFilename, anyHsc,
+ startPhase, isHaskellSrcFilename )
+import StaticFlags ( staticFlags, v_Ld_inputs, parseStaticFlags )
+import DynFlags ( defaultDynFlags )
import BasicTypes ( failed )
+import ErrUtils ( Message, debugTraceMsg, putMsg )
+import FastString ( getFastStringTable, isZEncoded, hasZEncoding )
+import Outputable
import Util
import Panic
-- Standard Haskell libraries
import EXCEPTION ( throwDyn )
import IO
-import Directory ( doesFileExist, doesDirectoryExist )
+import Directory ( doesDirectoryExist )
import System ( getArgs, exitWith, ExitCode(..) )
import Monad
import List
-- GHC's command-line interface
main =
- GHC.defaultErrorHandler $ do
+ GHC.defaultErrorHandler defaultDynFlags $ do
argv0 <- getArgs
- argv1 <- GHC.init argv0
+ argv1 <- parseStaticFlags =<< GHC.initFromArgs argv0
-- 2. Parse the "mode" flags (--make, --interactive etc.)
(cli_mode, argv2) <- parseModeFlags argv1
GHC.setSessionDynFlags session dflags
let
- {-
- We split out the object files (.o, .dll) and add them
- to v_Ld_inputs for use by the linker.
-
- The following things should be considered compilation manager inputs:
-
- - haskell source files (strings ending in .hs, .lhs or other
- haskellish extension),
-
- - module names (not forgetting hierarchical module names),
-
- - and finally we consider everything not containing a '.' to be
- a comp manager input, as shorthand for a .hs or .lhs filename.
-
- Everything else is considered to be a linker object, and passed
- straight through to the linker.
- -}
- looks_like_an_input m = isSourceFilename m
- || looksLikeModuleName m
- || '.' `notElem` m
-
-- To simplify the handling of filepaths, we normalise all filepaths right
-- away - e.g., for win32 platforms, backslashes are converted
-- into forward slashes.
normal_fileish_paths = map normalisePath fileish_args
- (srcs, objs) = partition looks_like_an_input normal_fileish_paths
+ (srcs, objs) = partition_args normal_fileish_paths [] []
-- Note: have v_Ld_inputs maintain the order in which 'objs' occurred on
-- the command-line.
ShowNumVersion -> putStrLn cProjectVersion
ShowInterface f -> showIface f
DoMake -> doMake session srcs
- DoMkDependHS -> doMkDependHS session srcs
- StopBefore p -> oneShot dflags p srcs
+ DoMkDependHS -> doMkDependHS session (map fst srcs)
+ StopBefore p
+ -- Stop after compiling Haskell if we aren't
+ -- interested in any further results.
+ | HscNothing <- hscTarget dflags
+ -> oneShot dflags HCc srcs
+ | otherwise
+ -> oneShot dflags p srcs
DoInteractive -> interactiveUI session srcs Nothing
DoEval expr -> interactiveUI session srcs (Just expr)
+ dumpFinalStats dflags
exitWith ExitSuccess
#ifndef GHCI
throwDyn (CmdLineError "not built for interactive use")
#endif
+-- -----------------------------------------------------------------------------
+-- Splitting arguments into source files and object files. This is where we
+-- interpret the -x <suffix> option, and attach a (Maybe Phase) to each source
+-- file indicating the phase specified by the -x option in force, if any.
+
+partition_args [] srcs objs = (reverse srcs, reverse objs)
+partition_args ("-x":suff:args) srcs objs
+ | "none" <- suff = partition_args args srcs objs
+ | StopLn <- phase = partition_args args srcs (slurp ++ objs)
+ | otherwise = partition_args rest (these_srcs ++ srcs) objs
+ where phase = startPhase suff
+ (slurp,rest) = break (== "-x") args
+ these_srcs = zip slurp (repeat (Just phase))
+partition_args (arg:args) srcs objs
+ | looks_like_an_input arg = partition_args args ((arg,Nothing):srcs) objs
+ | otherwise = partition_args args srcs (arg:objs)
+
+ {-
+ We split out the object files (.o, .dll) and add them
+ to v_Ld_inputs for use by the linker.
+
+ The following things should be considered compilation manager inputs:
+
+ - haskell source files (strings ending in .hs, .lhs or other
+ haskellish extension),
+
+ - module names (not forgetting hierarchical module names),
+
+ - and finally we consider everything not containing a '.' to be
+ a comp manager input, as shorthand for a .hs or .lhs filename.
+
+ Everything else is considered to be a linker object, and passed
+ straight through to the linker.
+ -}
+looks_like_an_input m = isSourceFilename m
+ || looksLikeModuleName m
+ || '.' `notElem` m
-- -----------------------------------------------------------------------------
-- Option sanity checks
-checkOptions :: CmdLineMode -> DynFlags -> [String] -> [String] -> IO ()
+checkOptions :: CmdLineMode -> DynFlags -> [(String,Maybe Phase)] -> [String] -> IO ()
-- Final sanity checking before kicking off a compilation (pipeline).
checkOptions cli_mode dflags srcs objs = do
-- Complain about any unknown flags
- let unknown_opts = [ f | f@('-':_) <- srcs ]
+ let unknown_opts = [ f | (f@('-':_), _) <- srcs ]
when (notNull unknown_opts) (unknownFlagsErr unknown_opts)
-- -prof and --interactive are not a good combination
--
verifyOutputFiles :: DynFlags -> IO ()
verifyOutputFiles dflags = do
- let odir = outputDir dflags
+ let odir = objectDir dflags
when (isJust odir) $ do
let dir = fromJust odir
flg <- doesDirectoryExist dir
, ( "-make" , PassFlag (setMode DoMake))
, ( "-interactive" , PassFlag (setMode DoInteractive))
, ( "e" , HasArg (\s -> setMode (DoEval s) "-e"))
-
- -- -fno-code says to stop after Hsc but don't generate any code.
- , ( "fno-code" , PassFlag (\f -> do setMode (StopBefore HCc) f
- addFlag "-fno-code"
- addFlag "-no-recomp"))
]
setMode :: CmdLineMode -> String -> ModeM ()
-- ----------------------------------------------------------------------------
-- Run --make mode
-doMake :: Session -> [String] -> IO ()
+doMake :: Session -> [(String,Maybe Phase)] -> IO ()
doMake sess [] = throwDyn (UsageError "no input files")
doMake sess srcs = do
- targets <- mapM GHC.guessTarget srcs
+ let (hs_srcs, non_hs_srcs) = partition haskellish srcs
+
+ haskellish (f,Nothing) =
+ looksLikeModuleName f || isHaskellSrcFilename f || '.' `notElem` f
+ haskellish (f,Just phase) =
+ phase `notElem` [As, Cc, CmmCpp, Cmm, StopLn]
+
+ dflags <- GHC.getSessionDynFlags sess
+ o_files <- mapM (compileFile dflags StopLn) non_hs_srcs
+ mapM_ (consIORef v_Ld_inputs) (reverse o_files)
+
+ targets <- mapM (uncurry GHC.guessTarget) hs_srcs
GHC.setTargets sess targets
- ok_flag <- GHC.load sess Nothing
+ ok_flag <- GHC.load sess LoadAllTargets
when (failed ok_flag) (exitWith (ExitFailure 1))
return ()
do hPutStr stderr "Glasgow Haskell Compiler, Version "
hPutStr stderr cProjectVersion
hPutStr stderr ", for Haskell 98, compiled by GHC version "
+#ifdef GHCI
+ -- GHCI is only set when we are bootstrapping...
+ hPutStrLn stderr cProjectVersion
+#else
hPutStrLn stderr cBooterVersion
+#endif
showVersion :: IO ()
showVersion = do
exitWith ExitSuccess
where
dump "" = return ()
- dump ('$':'$':s) = hPutStr stderr progName >> dump s
- dump (c:s) = hPutChar stderr c >> dump s
+ dump ('$':'$':s) = putStr progName >> dump s
+ dump (c:s) = putChar c >> dump s
+
+dumpFinalStats :: DynFlags -> IO ()
+dumpFinalStats dflags =
+ when (dopt Opt_D_faststring_stats dflags) $ dumpFastStringStats dflags
+
+dumpFastStringStats :: DynFlags -> IO ()
+dumpFastStringStats dflags = do
+ buckets <- getFastStringTable
+ let (entries, longest, is_z, has_z) = countFS 0 0 0 0 buckets
+ msg = text "FastString stats:" $$
+ nest 4 (vcat [text "size: " <+> int (length buckets),
+ text "entries: " <+> int entries,
+ text "longest chain: " <+> int longest,
+ text "z-encoded: " <+> (is_z `pcntOf` entries),
+ text "has z-encoding: " <+> (has_z `pcntOf` entries)
+ ])
+ -- we usually get more "has z-encoding" than "z-encoded", because
+ -- when we z-encode a string it might hash to the exact same string,
+ -- which will is not counted as "z-encoded". Only strings whose
+ -- Z-encoding is different from the original string are counted in
+ -- the "z-encoded" total.
+ putMsg dflags msg
+ where
+ x `pcntOf` y = int ((x * 100) `quot` y) <> char '%'
+
+countFS entries longest is_z has_z [] = (entries, longest, is_z, has_z)
+countFS entries longest is_z has_z (b:bs) =
+ let
+ len = length b
+ longest' = max len longest
+ entries' = entries + len
+ is_zs = length (filter isZEncoded b)
+ has_zs = length (filter hasZEncoding b)
+ in
+ countFS entries' longest' (is_z + is_zs) (has_z + has_zs) bs
-- -----------------------------------------------------------------------------
-- Util
projects / ghc-hetmet.git / blobdiff