1 -----------------------------------------------------------------------------
2 -- $Id: DriverState.hs,v 1.63 2001/12/10 14:08:14 simonmar Exp $
4 -- Settings for the driver
6 -- (c) The University of Glasgow 2000
8 -----------------------------------------------------------------------------
10 module DriverState where
12 #include "../includes/config.h"
13 #include "HsVersions.h"
15 import SysTools ( getTopDir )
16 import ParsePkgConf ( loadPackageConfig )
17 import Packages ( PackageConfig(..), mungePackagePaths )
30 import Directory ( doesDirectoryExist )
32 -----------------------------------------------------------------------------
33 -- non-configured things
35 cHaskell1Version = "5" -- i.e., Haskell 98
37 -----------------------------------------------------------------------------
38 -- GHC modes of operation
41 = DoMkDependHS -- ghc -M
42 | DoMkDLL -- ghc --mk-dll
43 | StopBefore Phase -- ghc -E | -C | -S | -c
44 | DoMake -- ghc --make
45 | DoInteractive -- ghc --interactive
46 | DoLink -- [ the default ]
49 GLOBAL_VAR(v_GhcMode, error "mode not set", GhcMode)
51 isCompManagerMode DoMake = True
52 isCompManagerMode DoInteractive = True
53 isCompManagerMode _ = False
55 -----------------------------------------------------------------------------
56 -- Global compilation flags
59 v_Hs_source_cpp_opts = global
60 [ "-D__HASKELL1__="++cHaskell1Version
61 , "-D__GLASGOW_HASKELL__="++cProjectVersionInt
63 , "-D__CONCURRENT_HASKELL__"
65 {-# NOINLINE v_Hs_source_cpp_opts #-}
68 -- Keep output from intermediate phases
69 GLOBAL_VAR(v_Keep_hi_diffs, False, Bool)
70 GLOBAL_VAR(v_Keep_hc_files, False, Bool)
71 GLOBAL_VAR(v_Keep_s_files, False, Bool)
72 GLOBAL_VAR(v_Keep_raw_s_files, False, Bool)
73 GLOBAL_VAR(v_Keep_tmp_files, False, Bool)
75 GLOBAL_VAR(v_Keep_il_files, False, Bool)
76 GLOBAL_VAR(v_Keep_ilx_files, False, Bool)
80 GLOBAL_VAR(v_Scale_sizes_by, 1.0, Double)
81 GLOBAL_VAR(v_Static, True, Bool)
82 GLOBAL_VAR(v_NoHsMain, False, Bool)
83 GLOBAL_VAR(v_Recomp, True, Bool)
84 GLOBAL_VAR(v_Collect_ghc_timing, False, Bool)
85 GLOBAL_VAR(v_Do_asm_mangling, True, Bool)
86 GLOBAL_VAR(v_Excess_precision, False, Bool)
87 GLOBAL_VAR(v_Read_DotGHCi, True, Bool)
90 GLOBAL_VAR(v_Hs_source_pp_opts, [], [String])
92 -----------------------------------------------------------------------------
93 -- Splitting object files (for libraries)
95 GLOBAL_VAR(v_Split_object_files, False, Bool)
96 GLOBAL_VAR(v_Split_info, ("",0), (String,Int))
97 -- The split prefix and number of files
101 can_split = prefixMatch "i386" cTARGETPLATFORM
102 || prefixMatch "alpha" cTARGETPLATFORM
103 || prefixMatch "hppa" cTARGETPLATFORM
104 || prefixMatch "m68k" cTARGETPLATFORM
105 || prefixMatch "mips" cTARGETPLATFORM
106 || prefixMatch "powerpc" cTARGETPLATFORM
107 || prefixMatch "rs6000" cTARGETPLATFORM
108 || prefixMatch "sparc" cTARGETPLATFORM
110 -----------------------------------------------------------------------------
111 -- Compiler output options
114 | cGhcWithNativeCodeGen == "YES" &&
115 (prefixMatch "i386" cTARGETPLATFORM ||
116 prefixMatch "sparc" cTARGETPLATFORM) = HscAsm
119 GLOBAL_VAR(v_Output_dir, Nothing, Maybe String)
120 GLOBAL_VAR(v_Output_file, Nothing, Maybe String)
121 GLOBAL_VAR(v_Output_hi, Nothing, Maybe String)
123 GLOBAL_VAR(v_Object_suf, Nothing, Maybe String)
124 GLOBAL_VAR(v_HC_suf, Nothing, Maybe String)
125 GLOBAL_VAR(v_Hi_dir, Nothing, Maybe String)
126 GLOBAL_VAR(v_Hi_suf, "hi", String)
128 GLOBAL_VAR(v_Ld_inputs, [], [String])
130 odir_ify :: String -> IO String
132 odir_opt <- readIORef v_Output_dir
135 Just d -> return (newdir d f)
137 osuf_ify :: String -> IO String
139 osuf_opt <- readIORef v_Object_suf
142 Just s -> return (newsuf s f)
144 -----------------------------------------------------------------------------
145 -- Compiler optimisation options
147 GLOBAL_VAR(v_OptLevel, 0, Int)
149 setOptLevel :: String -> IO ()
150 setOptLevel "" = do { writeIORef v_OptLevel 1 }
151 setOptLevel "not" = writeIORef v_OptLevel 0
152 setOptLevel [c] | isDigit c = do
153 let level = ord c - ord '0'
154 writeIORef v_OptLevel level
155 setOptLevel s = unknownFlagErr ("-O"++s)
157 GLOBAL_VAR(v_minus_o2_for_C, False, Bool)
158 GLOBAL_VAR(v_MaxSimplifierIterations, 4, Int)
159 GLOBAL_VAR(v_StgStats, False, Bool)
160 GLOBAL_VAR(v_UsageSPInf, False, Bool) -- Off by default
161 GLOBAL_VAR(v_Strictness, True, Bool)
163 GLOBAL_VAR(v_CPR, True, Bool)
165 GLOBAL_VAR(v_CSE, True, Bool)
166 GLOBAL_VAR(v_RuleCheck, Nothing, Maybe String)
168 -- these are the static flags you get without -O.
171 "-fignore-interface-pragmas",
172 "-fomit-interface-pragmas",
173 "-fdo-lambda-eta-expansion", -- This one is important for a tiresome reason:
174 -- we want to make sure that the bindings for data
175 -- constructors are eta-expanded. This is probably
176 -- a good thing anyway, but it seems fragile.
180 -- these are the static flags you get when -O is on.
185 "-fdo-eta-reduction",
186 "-fdo-lambda-eta-expansion",
192 hsc_minusO2_flags = hsc_minusO_flags -- for now
194 getStaticOptimisationFlags 0 = hsc_minusNoO_flags
195 getStaticOptimisationFlags 1 = hsc_minusO_flags
196 getStaticOptimisationFlags n = hsc_minusO2_flags
198 buildCoreToDo :: IO [CoreToDo]
200 opt_level <- readIORef v_OptLevel
201 max_iter <- readIORef v_MaxSimplifierIterations
202 usageSP <- readIORef v_UsageSPInf
203 strictness <- readIORef v_Strictness
205 cpr <- readIORef v_CPR
207 cse <- readIORef v_CSE
208 rule_check <- readIORef v_RuleCheck
210 if opt_level == 0 then return
212 CoreDoSimplify (SimplPhase 0) [
213 MaxSimplifierIterations max_iter
217 else {- opt_level >= 1 -} return [
219 -- initial simplify: mk specialiser happy: minimum effort please
220 CoreDoSimplify SimplGently [
222 -- Don't inline anything till full laziness has bitten
223 -- In particular, inlining wrappers inhibits floating
224 -- e.g. ...(case f x of ...)...
225 -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
226 -- ==> ...(case x of I# x# -> case fw x# of ...)...
227 -- and now the redex (f x) isn't floatable any more
228 -- Similarly, don't apply any rules until after full
229 -- laziness. Notably, list fusion can prevent floating.
232 -- Don't do case-of-case transformations.
233 -- This makes full laziness work better
234 MaxSimplifierIterations max_iter
237 -- Specialisation is best done before full laziness
238 -- so that overloaded functions have all their dictionary lambdas manifest
241 CoreDoFloatOutwards False{-not full-},
244 CoreDoSimplify (SimplPhase 2) [
245 -- Want to run with inline phase 2 after the specialiser to give
246 -- maximum chance for fusion to work before we inline build/augment
247 -- in phase 1. This made a difference in 'ansi' where an
248 -- overloaded function wasn't inlined till too late.
249 MaxSimplifierIterations max_iter
251 case rule_check of { Just pat -> CoreDoRuleCheck 2 pat; Nothing -> CoreDoNothing },
253 -- infer usage information here in case we need it later.
254 -- (add more of these where you need them --KSW 1999-04)
255 if usageSP then CoreDoUSPInf else CoreDoNothing,
257 CoreDoSimplify (SimplPhase 1) [
258 -- Need inline-phase2 here so that build/augment get
259 -- inlined. I found that spectral/hartel/genfft lost some useful
260 -- strictness in the function sumcode' if augment is not inlined
261 -- before strictness analysis runs
262 MaxSimplifierIterations max_iter
264 case rule_check of { Just pat -> CoreDoRuleCheck 1 pat; Nothing -> CoreDoNothing },
266 CoreDoSimplify (SimplPhase 0) [
267 -- Phase 0: allow all Ids to be inlined now
268 -- This gets foldr inlined before strictness analysis
270 MaxSimplifierIterations 3
271 -- At least 3 iterations because otherwise we land up with
272 -- huge dead expressions because of an infelicity in the
274 -- let k = BIG in foldr k z xs
275 -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
276 -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
280 case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing },
283 if cpr then CoreDoCPResult else CoreDoNothing,
285 if strictness then CoreDoStrictness else CoreDoNothing,
289 CoreDoSimplify (SimplPhase 0) [
290 MaxSimplifierIterations max_iter
293 CoreDoFloatOutwards False{-not full-},
294 -- nofib/spectral/hartel/wang doubles in speed if you
295 -- do full laziness late in the day. It only happens
296 -- after fusion and other stuff, so the early pass doesn't
297 -- catch it. For the record, the redex is
298 -- f_el22 (f_el21 r_midblock)
301 -- Leave out lambda lifting for now
302 -- "-fsimplify", -- Tidy up results of full laziness
304 -- "-fmax-simplifier-iterations2",
306 -- "-ffloat-outwards-full",
308 -- We want CSE to follow the final full-laziness pass, because it may
309 -- succeed in commoning up things floated out by full laziness.
310 -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
312 if cse then CoreCSE else CoreDoNothing,
316 -- Case-liberation for -O2. This should be after
317 -- strictness analysis and the simplification which follows it.
319 case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing },
321 if opt_level >= 2 then
325 if opt_level >= 2 then
330 -- Final clean-up simplification:
331 CoreDoSimplify (SimplPhase 0) [
332 MaxSimplifierIterations max_iter
336 buildStgToDo :: IO [ StgToDo ]
338 stg_stats <- readIORef v_StgStats
339 let flags1 | stg_stats = [ D_stg_stats ]
343 ways_ <- readIORef v_Ways
344 let flags2 | WayProf `elem` ways_ = StgDoMassageForProfiling : flags1
349 -----------------------------------------------------------------------------
352 split_marker = ':' -- not configurable (ToDo)
354 v_Import_paths, v_Include_paths, v_Library_paths :: IORef [String]
355 GLOBAL_VAR(v_Import_paths, ["."], [String])
356 GLOBAL_VAR(v_Include_paths, ["."], [String])
357 GLOBAL_VAR(v_Library_paths, [], [String])
359 GLOBAL_VAR(v_Cmdline_libraries, [], [String])
361 addToDirList :: IORef [String] -> String -> IO ()
362 addToDirList ref path
363 = do paths <- readIORef ref
364 shiny_new_ones <- splitUp path
365 writeIORef ref (paths ++ filter (not.null) shiny_new_ones)
366 -- empty paths are ignored: there might be a trailing
367 -- ':' in the initial list, for example. Empty paths can
368 -- cause confusion when they are translated into -I options
369 -- for passing to gcc.
371 splitUp ::String -> IO [String]
372 #ifdef mingw32_TARGET_OS
373 -- 'hybrid' support for DOS-style paths in directory lists.
375 -- That is, if "foo:bar:baz" is used, this interpreted as
376 -- consisting of three entries, 'foo', 'bar', 'baz'.
377 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
378 -- as four elts, "c:/foo", "c:\\foo", "x", and "/bar" --
379 -- *provided* c:/foo exists and x:/bar doesn't.
381 -- Notice that no attempt is made to fully replace the 'standard'
382 -- split marker ':' with the Windows / DOS one, ';'. The reason being
383 -- that this will cause too much breakage for users & ':' will
384 -- work fine even with DOS paths, if you're not insisting on being silly.
386 splitUp [] = return []
387 splitUp (x:':':div:xs)
388 | div `elem` dir_markers = do
389 let (p,rs) = findNextPath xs
392 Consult the file system to check the interpretation
393 of (x:':':div:p) -- this is arguably excessive, we
394 could skip this test & just say that it is a valid
397 flg <- doesDirectoryExist (x:':':div:p)
399 return ((x:':':div:p):ps)
401 return ([x]:(div:p):ps)
403 let (p,rs) = findNextPath xs
410 -- will be called either when we've consumed nought or the "<Drive>:/" part of
411 -- a DOS path, so splitting is just a Q of finding the next split marker.
413 case break (`elem` split_markers) xs of
417 split_markers :: [Char]
418 split_markers = [':', ';']
420 dir_markers :: [Char]
421 dir_markers = ['/', '\\']
424 splitUp xs = return (split split_marker xs)
427 GLOBAL_VAR(v_HCHeader, "", String)
429 -----------------------------------------------------------------------------
432 -- package list is maintained in dependency order
433 GLOBAL_VAR(v_Packages, ("std":"rts":"gmp":[]), [String])
435 readPackageConf :: String -> IO ()
436 readPackageConf conf_file = do
437 proto_pkg_details <- loadPackageConfig conf_file
439 let pkg_details = mungePackagePaths top_dir proto_pkg_details
440 old_pkg_details <- readIORef v_Package_details
441 let intersection = filter (`elem` map name old_pkg_details)
442 (map name pkg_details)
443 if (not (null intersection))
444 then throwDyn (InstallationError ("package `" ++ head intersection ++ "' is already defined"))
446 writeIORef v_Package_details (pkg_details ++ old_pkg_details)
448 addPackage :: String -> IO ()
450 = do pkg_details <- readIORef v_Package_details
451 case lookupPkg package pkg_details of
452 Nothing -> throwDyn (CmdLineError ("unknown package name: " ++ package))
454 ps <- readIORef v_Packages
455 unless (package `elem` ps) $ do
456 mapM_ addPackage (package_deps details)
457 ps <- readIORef v_Packages
458 writeIORef v_Packages (package:ps)
460 getPackageImportPath :: IO [String]
461 getPackageImportPath = do
463 return (nub (filter (not.null) (concatMap import_dirs ps)))
465 getPackageIncludePath :: IO [String]
466 getPackageIncludePath = do
468 return (nub (filter (not.null) (concatMap include_dirs ps)))
470 -- includes are in reverse dependency order (i.e. rts first)
471 getPackageCIncludes :: IO [String]
472 getPackageCIncludes = do
474 return (reverse (nub (filter (not.null) (concatMap c_includes ps))))
476 getPackageLibraryPath :: IO [String]
477 getPackageLibraryPath = do
479 return (nub (filter (not.null) (concatMap library_dirs ps)))
481 getPackageLibraries :: IO [String]
482 getPackageLibraries = do
484 tag <- readIORef v_Build_tag
485 let suffix = if null tag then "" else '_':tag
487 map (\p -> map (++suffix) (hACK (hs_libraries p)) ++ extra_libraries p) ps
490 -- This is a totally horrible (temporary) hack, for Win32. Problem is
491 -- that package.conf for Win32 says that the main prelude lib is
492 -- split into HSstd1 and HSstd2, which is needed due to limitations in
493 -- the PEi386 file format, to make GHCi work. However, we still only
494 -- have HSstd.a for static linking, not HSstd1.a and HSstd2.a.
495 -- getPackageLibraries is called to find the .a's to add to the static
496 -- link line. On Win32, this hACK detects HSstd1 and HSstd2 and
497 -- replaces them with HSstd, so static linking still works.
498 -- Libraries needed for dynamic (GHCi) linking are discovered via
499 -- different route (in InteractiveUI.linkPackage).
500 -- See driver/PackageSrc.hs for the HSstd1/HSstd2 split definition.
501 -- THIS IS A STRICTLY TEMPORARY HACK (famous last words ...)
502 -- JRS 04 Sept 01: Same appalling hack for HSwin32[1,2]
504 # ifndef mingw32_TARGET_OS
507 = if "HSstd1" `elem` libs && "HSstd2" `elem` libs
508 then "HSstd" : filter ((/= "HSstd").(take 5)) libs
510 if "HSwin321" `elem` libs && "HSwin322" `elem` libs
511 then "HSwin32" : filter ((/= "HSwin32").(take 7)) libs
516 getPackageExtraGhcOpts :: IO [String]
517 getPackageExtraGhcOpts = do
519 return (concatMap extra_ghc_opts ps)
521 getPackageExtraCcOpts :: IO [String]
522 getPackageExtraCcOpts = do
524 return (concatMap extra_cc_opts ps)
526 getPackageExtraLdOpts :: IO [String]
527 getPackageExtraLdOpts = do
529 return (concatMap extra_ld_opts ps)
531 getPackageInfo :: IO [PackageConfig]
533 ps <- readIORef v_Packages
536 getPackageDetails :: [String] -> IO [PackageConfig]
537 getPackageDetails ps = do
538 pkg_details <- readIORef v_Package_details
539 return [ pkg | p <- ps, Just pkg <- [ lookupPkg p pkg_details ] ]
541 GLOBAL_VAR(v_Package_details, [], [PackageConfig])
543 lookupPkg :: String -> [PackageConfig] -> Maybe PackageConfig
545 = case [p | p <- ps, name p == nm] of
549 -----------------------------------------------------------------------------
552 -- The central concept of a "way" is that all objects in a given
553 -- program must be compiled in the same "way". Certain options change
554 -- parameters of the virtual machine, eg. profiling adds an extra word
555 -- to the object header, so profiling objects cannot be linked with
556 -- non-profiling objects.
558 -- After parsing the command-line options, we determine which "way" we
559 -- are building - this might be a combination way, eg. profiling+ticky-ticky.
561 -- We then find the "build-tag" associated with this way, and this
562 -- becomes the suffix used to find .hi files and libraries used in
565 GLOBAL_VAR(v_Build_tag, "", String)
594 GLOBAL_VAR(v_Ways, [] ,[WayName])
596 allowed_combination way = way `elem` combs
597 where -- the sub-lists must be ordered according to WayName,
598 -- because findBuildTag sorts them
599 combs = [ [WayProf,WayUnreg], [WayProf,WaySMP] ]
601 findBuildTag :: IO [String] -- new options
603 way_names <- readIORef v_Ways
604 case sort way_names of
605 [] -> do -- writeIORef v_Build_tag ""
608 [w] -> do let details = lkupWay w
609 writeIORef v_Build_tag (wayTag details)
610 return (wayOpts details)
612 ws -> if not (allowed_combination ws)
613 then throwDyn (CmdLineError $
614 "combination not supported: " ++
615 foldr1 (\a b -> a ++ '/':b)
616 (map (wayName . lkupWay) ws))
617 else let stuff = map lkupWay ws
618 tag = concat (map wayTag stuff)
619 flags = map wayOpts stuff
621 writeIORef v_Build_tag tag
622 return (concat flags)
625 case lookup w way_details of
626 Nothing -> error "findBuildTag"
627 Just details -> details
635 way_details :: [ (WayName, Way) ]
637 [ (WayProf, Way "p" "Profiling"
643 (WayTicky, Way "t" "Ticky-ticky Profiling"
646 , "-optc-DTICKY_TICKY"
649 (WayUnreg, Way "u" "Unregisterised"
652 -- optl's below to tell linker where to find the PVM library -- HWL
653 (WayPar, Way "mp" "Parallel"
655 , "-D__PARALLEL_HASKELL__"
657 , "-package concurrent"
659 , "-optl-L${PVM_ROOT}/lib/${PVM_ARCH}"
664 -- at the moment we only change the RTS and could share compiler and libs!
665 (WayPar, Way "mt" "Parallel ticky profiling"
667 , "-D__PARALLEL_HASKELL__"
670 , "-package concurrent"
672 , "-optl-L${PVM_ROOT}/lib/${PVM_ARCH}"
677 (WayPar, Way "md" "Distributed"
679 , "-D__PARALLEL_HASKELL__"
680 , "-D__DISTRIBUTED_HASKELL__"
683 , "-package concurrent"
685 , "-optl-L${PVM_ROOT}/lib/${PVM_ARCH}"
690 (WayGran, Way "mg" "GranSim"
694 , "-package concurrent"
697 (WaySMP, Way "s" "SMP"
704 (WayUser_a, Way "a" "User way 'a'" ["$WAY_a_REAL_OPTS"]),
705 (WayUser_b, Way "b" "User way 'b'" ["$WAY_b_REAL_OPTS"]),
706 (WayUser_c, Way "c" "User way 'c'" ["$WAY_c_REAL_OPTS"]),
707 (WayUser_d, Way "d" "User way 'd'" ["$WAY_d_REAL_OPTS"]),
708 (WayUser_e, Way "e" "User way 'e'" ["$WAY_e_REAL_OPTS"]),
709 (WayUser_f, Way "f" "User way 'f'" ["$WAY_f_REAL_OPTS"]),
710 (WayUser_g, Way "g" "User way 'g'" ["$WAY_g_REAL_OPTS"]),
711 (WayUser_h, Way "h" "User way 'h'" ["$WAY_h_REAL_OPTS"]),
712 (WayUser_i, Way "i" "User way 'i'" ["$WAY_i_REAL_OPTS"]),
713 (WayUser_j, Way "j" "User way 'j'" ["$WAY_j_REAL_OPTS"]),
714 (WayUser_k, Way "k" "User way 'k'" ["$WAY_k_REAL_OPTS"]),
715 (WayUser_l, Way "l" "User way 'l'" ["$WAY_l_REAL_OPTS"]),
716 (WayUser_m, Way "m" "User way 'm'" ["$WAY_m_REAL_OPTS"]),
717 (WayUser_n, Way "n" "User way 'n'" ["$WAY_n_REAL_OPTS"]),
718 (WayUser_o, Way "o" "User way 'o'" ["$WAY_o_REAL_OPTS"]),
719 (WayUser_A, Way "A" "User way 'A'" ["$WAY_A_REAL_OPTS"]),
720 (WayUser_B, Way "B" "User way 'B'" ["$WAY_B_REAL_OPTS"])
725 , "-optc-DUSE_MINIINTERPRETER"
726 , "-fno-asm-mangling"
730 -----------------------------------------------------------------------------
731 -- Options for particular phases
733 GLOBAL_VAR(v_Opt_dep, [], [String])
734 GLOBAL_VAR(v_Anti_opt_C, [], [String])
735 GLOBAL_VAR(v_Opt_C, [], [String])
736 GLOBAL_VAR(v_Opt_l, [], [String])
737 GLOBAL_VAR(v_Opt_dll, [], [String])
739 getStaticOpts :: IORef [String] -> IO [String]
740 getStaticOpts ref = readIORef ref >>= return . reverse