2 -----------------------------------------------------------------------------
6 -- Most flags are dynamic flags, which means they can change from
7 -- compilation to compilation using OPTIONS_GHC pragmas, and in a
8 -- multi-session GHC each session can be using different dynamic
9 -- flags. Dynamic flags can also be set at the prompt in GHCi.
11 -- (c) The University of Glasgow 2005
13 -----------------------------------------------------------------------------
19 HscTarget(..), isObjectTarget, defaultObjectTarget,
20 GhcMode(..), isOneShot,
21 GhcLink(..), isNoLink,
27 -- Configuration of the core-to-core and stg-to-stg phases
31 SimplifierMode(..), FloatOutSwitches(..),
32 getCoreToDo, getStgToDo,
34 -- Manipulating DynFlags
35 defaultDynFlags, -- DynFlags
36 initDynFlags, -- DynFlags -> IO DynFlags
38 dopt, -- DynFlag -> DynFlags -> Bool
39 dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags
40 getOpts, -- (DynFlags -> [a]) -> IO [a]
51 machdepCCOpts, picCCOpts,
52 supportedLanguages, languageOptions,
56 #include "HsVersions.h"
60 import PrelNames ( mAIN )
61 #ifdef i386_TARGET_ARCH
62 import StaticFlags ( opt_Static )
64 import StaticFlags ( opt_PIC, WayName(..), v_Ways, v_Build_tag,
66 import {-# SOURCE #-} Packages (PackageState)
67 import DriverPhases ( Phase(..), phaseInputExt )
70 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
71 import Panic ( panic, GhcException(..) )
72 import UniqFM ( UniqFM )
74 import Maybes ( orElse, fromJust )
75 import SrcLoc ( SrcSpan )
77 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
79 import Data.IORef ( readIORef )
80 import Control.Exception ( throwDyn )
81 import Control.Monad ( when )
84 import System.FilePath
85 import System.IO ( hPutStrLn, stderr )
87 -- -----------------------------------------------------------------------------
95 | Opt_D_dump_cmmz_pretty
99 | Opt_D_dump_asm_native
100 | Opt_D_dump_asm_liveness
101 | Opt_D_dump_asm_coalesce
102 | Opt_D_dump_asm_regalloc
103 | Opt_D_dump_asm_regalloc_stages
104 | Opt_D_dump_asm_conflicts
105 | Opt_D_dump_asm_stats
111 | Opt_D_dump_inlinings
112 | Opt_D_dump_rule_firings
113 | Opt_D_dump_occur_anal
117 | Opt_D_dump_simpl_iterations
118 | Opt_D_dump_simpl_phases
127 | Opt_D_dump_worker_wrapper
128 | Opt_D_dump_rn_trace
129 | Opt_D_dump_rn_stats
131 | Opt_D_dump_simpl_stats
132 | Opt_D_dump_tc_trace
133 | Opt_D_dump_if_trace
139 | Opt_D_verbose_core2core
140 | Opt_D_verbose_stg2stg
142 | Opt_D_dump_hi_diffs
143 | Opt_D_dump_minimal_imports
144 | Opt_D_dump_mod_cycles
145 | Opt_D_dump_view_pattern_commoning
146 | Opt_D_faststring_stats
147 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
148 | Opt_D_no_debug_output
154 | Opt_WarnIsError -- -Werror; makes warnings fatal
155 | Opt_WarnDuplicateExports
157 | Opt_WarnImplicitPrelude
158 | Opt_WarnIncompletePatterns
159 | Opt_WarnIncompletePatternsRecUpd
160 | Opt_WarnMissingFields
161 | Opt_WarnMissingMethods
162 | Opt_WarnMissingSigs
163 | Opt_WarnNameShadowing
164 | Opt_WarnOverlappingPatterns
165 | Opt_WarnSimplePatterns
166 | Opt_WarnTypeDefaults
167 | Opt_WarnMonomorphism
168 | Opt_WarnUnusedBinds
169 | Opt_WarnUnusedImports
170 | Opt_WarnUnusedMatches
171 | Opt_WarnDeprecations
172 | Opt_WarnDodgyImports
177 | Opt_OverlappingInstances
178 | Opt_UndecidableInstances
179 | Opt_IncoherentInstances
180 | Opt_MonomorphismRestriction
182 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
183 | Opt_ForeignFunctionInterface
184 | Opt_UnliftedFFITypes
185 | Opt_PArr -- Syntactic support for parallel arrays
186 | Opt_Arrows -- Arrow-notation syntax
187 | Opt_TemplateHaskell
191 | Opt_ImplicitPrelude
192 | Opt_ScopedTypeVariables
196 | Opt_OverloadedStrings
197 | Opt_DisambiguateRecordFields
198 | Opt_RecordWildCards
203 | Opt_StandaloneDeriving
204 | Opt_DeriveDataTypeable
205 | Opt_TypeSynonymInstances
206 | Opt_FlexibleContexts
207 | Opt_FlexibleInstances
208 | Opt_ConstrainedClassMethods
209 | Opt_MultiParamTypeClasses
210 | Opt_FunctionalDependencies
212 | Opt_PolymorphicComponents
213 | Opt_ExistentialQuantification
217 | Opt_PatternSignatures
218 | Opt_ParallelListComp
219 | Opt_TransformListComp
220 | Opt_GeneralizedNewtypeDeriving
223 | Opt_LiberalTypeSynonyms
226 | Opt_ImpredicativeTypes
229 | Opt_PrintExplicitForalls
234 | Opt_StaticArgumentTransformation
238 | Opt_IgnoreInterfacePragmas
239 | Opt_OmitInterfacePragmas
240 | Opt_DoLambdaEtaExpansion
244 | Opt_UnboxStrictFields
249 | Opt_RegsGraph -- do graph coloring register allocation
250 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
258 | Opt_ExcessPrecision
259 | Opt_ReadUserPackageConf
263 | Opt_HideAllPackages
264 | Opt_PrintBindResult
268 | Opt_BreakOnException
270 | Opt_PrintEvldWithShow
271 | Opt_PrintBindContents
275 | Opt_ConvertToZipCfgAndBack
286 data DynFlags = DynFlags {
289 coreToDo :: Maybe [CoreToDo], -- reserved for -Ofile
290 stgToDo :: Maybe [StgToDo], -- similarly
291 hscTarget :: HscTarget,
292 hscOutName :: String, -- name of the output file
293 extCoreName :: String, -- name of the .core output file
294 verbosity :: Int, -- verbosity level
295 optLevel :: Int, -- optimisation level
296 simplPhases :: Int, -- number of simplifier phases
297 maxSimplIterations :: Int, -- max simplifier iterations
298 shouldDumpSimplPhase :: SimplifierMode -> Bool,
299 ruleCheck :: Maybe String,
301 specConstrThreshold :: Maybe Int, -- Threshold for SpecConstr
302 specConstrCount :: Maybe Int, -- Max number of specialisations for any one function
303 liberateCaseThreshold :: Maybe Int, -- Threshold for LiberateCase
305 stolen_x86_regs :: Int,
306 cmdlineHcIncludes :: [String], -- -#includes
307 importPaths :: [FilePath],
309 mainFunIs :: Maybe String,
310 ctxtStkDepth :: Int, -- Typechecker context stack depth
312 thisPackage :: PackageId,
315 wayNames :: [WayName], -- way flags from the cmd line
316 buildTag :: String, -- the global "way" (eg. "p" for prof)
317 rtsBuildTag :: String, -- the RTS "way"
320 objectDir :: Maybe String,
321 hiDir :: Maybe String,
322 stubDir :: Maybe String,
328 outputFile :: Maybe String,
329 outputHi :: Maybe String,
330 dynLibLoader :: DynLibLoader,
332 -- | This is set by DriverPipeline.runPipeline based on where
333 -- its output is going.
334 dumpPrefix :: Maybe FilePath,
336 -- | Override the dumpPrefix set by runPipeline.
337 -- Set by -ddump-file-prefix
338 dumpPrefixForce :: Maybe FilePath,
340 includePaths :: [String],
341 libraryPaths :: [String],
342 frameworkPaths :: [String], -- used on darwin only
343 cmdlineFrameworks :: [String], -- ditto
344 tmpDir :: String, -- no trailing '/'
346 ghcUsagePath :: FilePath, -- Filled in by SysTools
347 ghciUsagePath :: FilePath, -- ditto
349 hpcDir :: String, -- ^ path to store the .mix files
351 -- options for particular phases
360 opt_windres :: [String],
362 -- commands for particular phases
364 pgm_P :: (String,[Option]),
366 pgm_c :: (String,[Option]),
367 pgm_m :: (String,[Option]),
368 pgm_s :: (String,[Option]),
369 pgm_a :: (String,[Option]),
370 pgm_l :: (String,[Option]),
371 pgm_dll :: (String,[Option]),
373 pgm_sysman :: String,
374 pgm_windres :: String,
377 extraPkgConfs :: [FilePath],
378 topDir :: FilePath, -- filled in by SysTools
379 systemPackageConfig :: FilePath, -- ditto
380 -- The -package-conf flags given on the command line, in the order
383 packageFlags :: [PackageFlag],
384 -- The -package and -hide-package flags from the command-line
387 -- NB. do not modify this field, it is calculated by
388 -- Packages.initPackages and Packages.updatePackages.
389 pkgDatabase :: Maybe (UniqFM PackageConfig),
390 pkgState :: PackageState,
396 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
398 haddockOptions :: Maybe String
409 -- | will this target result in an object file on the disk?
410 isObjectTarget :: HscTarget -> Bool
411 isObjectTarget HscC = True
412 isObjectTarget HscAsm = True
413 isObjectTarget _ = False
415 -- | The 'GhcMode' tells us whether we're doing multi-module
416 -- compilation (controlled via the "GHC" API) or one-shot
417 -- (single-module) compilation. This makes a difference primarily to
418 -- the "Finder": in one-shot mode we look for interface files for
419 -- imported modules, but in multi-module mode we look for source files
420 -- in order to check whether they need to be recompiled.
422 = CompManager -- ^ --make, GHCi, etc.
423 | OneShot -- ^ ghc -c Foo.hs
424 | MkDepend -- ^ ghc -M, see Finder for why we need this
427 isOneShot :: GhcMode -> Bool
428 isOneShot OneShot = True
429 isOneShot _other = False
431 -- | What kind of linking to do.
432 data GhcLink -- What to do in the link step, if there is one
433 = NoLink -- Don't link at all
434 | LinkBinary -- Link object code into a binary
435 | LinkInMemory -- Use the in-memory dynamic linker
436 | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
439 isNoLink :: GhcLink -> Bool
440 isNoLink NoLink = True
444 = ExposePackage String
446 | IgnorePackage String
449 defaultHscTarget :: HscTarget
450 defaultHscTarget = defaultObjectTarget
452 -- | the 'HscTarget' value corresponding to the default way to create
453 -- object files on the current platform.
454 defaultObjectTarget :: HscTarget
456 | cGhcWithNativeCodeGen == "YES" = HscAsm
461 | Wrapped (Maybe String)
465 initDynFlags :: DynFlags -> IO DynFlags
466 initDynFlags dflags = do
467 -- someday these will be dynamic flags
468 ways <- readIORef v_Ways
469 build_tag <- readIORef v_Build_tag
470 rts_build_tag <- readIORef v_RTS_Build_tag
473 buildTag = build_tag,
474 rtsBuildTag = rts_build_tag
477 defaultDynFlags :: DynFlags
480 ghcMode = CompManager,
481 ghcLink = LinkBinary,
484 hscTarget = defaultHscTarget,
490 maxSimplIterations = 4,
491 shouldDumpSimplPhase = const False,
493 specConstrThreshold = Just 200,
494 specConstrCount = Just 3,
495 liberateCaseThreshold = Just 200,
497 cmdlineHcIncludes = [],
501 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
503 thisPackage = mainPackageId,
509 objectSuf = phaseInputExt StopLn,
510 hcSuf = phaseInputExt HCc,
513 outputFile = Nothing,
515 dynLibLoader = Deployable,
516 dumpPrefix = Nothing,
517 dumpPrefixForce = Nothing,
521 cmdlineFrameworks = [],
522 tmpDir = cDEFAULT_TMPDIR,
540 pkgDatabase = Nothing,
541 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
542 wayNames = panic "defaultDynFlags: No wayNames",
543 buildTag = panic "defaultDynFlags: No buildTag",
544 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
545 -- initSysTools fills all these in
546 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
547 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
548 topDir = panic "defaultDynFlags: No topDir",
549 systemPackageConfig = panic "defaultDynFlags: No systemPackageConfig",
550 pgm_L = panic "defaultDynFlags: No pgm_L",
551 pgm_P = panic "defaultDynFlags: No pgm_P",
552 pgm_F = panic "defaultDynFlags: No pgm_F",
553 pgm_c = panic "defaultDynFlags: No pgm_c",
554 pgm_m = panic "defaultDynFlags: No pgm_m",
555 pgm_s = panic "defaultDynFlags: No pgm_s",
556 pgm_a = panic "defaultDynFlags: No pgm_a",
557 pgm_l = panic "defaultDynFlags: No pgm_l",
558 pgm_dll = panic "defaultDynFlags: No pgm_dll",
559 pgm_T = panic "defaultDynFlags: No pgm_T",
560 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
561 pgm_windres = panic "defaultDynFlags: No pgm_windres",
562 -- end of initSysTools values
563 haddockOptions = Nothing,
565 Opt_ReadUserPackageConf,
567 Opt_MonoPatBinds, -- Experimentally, I'm making this non-standard
568 -- behaviour the default, to see if anyone notices
572 Opt_MonomorphismRestriction,
580 Opt_PrintBindContents
582 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
583 -- The default -O0 options
586 log_action = \severity srcSpan style msg ->
588 SevInfo -> hPutStrLn stderr (show (msg style))
589 SevFatal -> hPutStrLn stderr (show (msg style))
590 _ -> hPutStrLn stderr ('\n':show ((mkLocMessage srcSpan msg) style))
596 0 | print errors & warnings only
597 1 | minimal verbosity: print "compiling M ... done." for each module.
598 2 | equivalent to -dshow-passes
599 3 | equivalent to existing "ghc -v"
600 4 | "ghc -v -ddump-most"
601 5 | "ghc -v -ddump-all"
604 dopt :: DynFlag -> DynFlags -> Bool
605 dopt f dflags = f `elem` (flags dflags)
607 dopt_set :: DynFlags -> DynFlag -> DynFlags
608 dopt_set dfs f = dfs{ flags = f : flags dfs }
610 dopt_unset :: DynFlags -> DynFlag -> DynFlags
611 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
613 getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
614 getOpts dflags opts = reverse (opts dflags)
615 -- We add to the options from the front, so we need to reverse the list
617 getVerbFlag :: DynFlags -> String
619 | verbosity dflags >= 3 = "-v"
622 setObjectDir, setHiDir, setStubDir, setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
623 setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
624 addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptdep, addOptwindres,
625 addCmdlineFramework, addHaddockOpts
626 :: String -> DynFlags -> DynFlags
627 setOutputFile, setOutputHi, setDumpPrefixForce
628 :: Maybe String -> DynFlags -> DynFlags
630 setObjectDir f d = d{ objectDir = Just f}
631 setHiDir f d = d{ hiDir = Just f}
632 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
633 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
634 -- #included from the .hc file when compiling with -fvia-C.
636 setObjectSuf f d = d{ objectSuf = f}
637 setHiSuf f d = d{ hiSuf = f}
638 setHcSuf f d = d{ hcSuf = f}
640 setOutputFile f d = d{ outputFile = f}
641 setOutputHi f d = d{ outputHi = f}
643 parseDynLibLoaderMode f d =
645 ("deploy", "") -> d{ dynLibLoader = Deployable }
646 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
647 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
648 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
649 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
650 (_,_) -> error "Unknown dynlib loader"
652 setDumpPrefixForce f d = d { dumpPrefixForce = f}
654 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
655 -- Config.hs should really use Option.
656 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
658 setPgmL f d = d{ pgm_L = f}
659 setPgmF f d = d{ pgm_F = f}
660 setPgmc f d = d{ pgm_c = (f,[])}
661 setPgmm f d = d{ pgm_m = (f,[])}
662 setPgms f d = d{ pgm_s = (f,[])}
663 setPgma f d = d{ pgm_a = (f,[])}
664 setPgml f d = d{ pgm_l = (f,[])}
665 setPgmdll f d = d{ pgm_dll = (f,[])}
666 setPgmwindres f d = d{ pgm_windres = f}
668 addOptL f d = d{ opt_L = f : opt_L d}
669 addOptP f d = d{ opt_P = f : opt_P d}
670 addOptF f d = d{ opt_F = f : opt_F d}
671 addOptc f d = d{ opt_c = f : opt_c d}
672 addOptm f d = d{ opt_m = f : opt_m d}
673 addOpta f d = d{ opt_a = f : opt_a d}
674 addOptl f d = d{ opt_l = f : opt_l d}
675 addOptdep f d = d{ opt_dep = f : opt_dep d}
676 addOptwindres f d = d{ opt_windres = f : opt_windres d}
678 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
680 addHaddockOpts f d = d{ haddockOptions = Just f}
682 -- -----------------------------------------------------------------------------
683 -- Command-line options
685 -- When invoking external tools as part of the compilation pipeline, we
686 -- pass these a sequence of options on the command-line. Rather than
687 -- just using a list of Strings, we use a type that allows us to distinguish
688 -- between filepaths and 'other stuff'. [The reason being, of course, that
689 -- this type gives us a handle on transforming filenames, and filenames only,
690 -- to whatever format they're expected to be on a particular platform.]
693 = FileOption -- an entry that _contains_ filename(s) / filepaths.
694 String -- a non-filepath prefix that shouldn't be
695 -- transformed (e.g., "/out=")
696 String -- the filepath/filename portion
699 -----------------------------------------------------------------------------
700 -- Setting the optimisation level
702 updOptLevel :: Int -> DynFlags -> DynFlags
703 -- Set dynflags appropriate to the optimisation level
705 = dfs2{ optLevel = final_n }
707 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
708 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
709 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
711 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
712 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
714 optLevelFlags :: [([Int], DynFlag)]
716 = [ ([0], Opt_IgnoreInterfacePragmas)
717 , ([0], Opt_OmitInterfacePragmas)
719 , ([1,2], Opt_IgnoreAsserts)
720 , ([1,2], Opt_RewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
722 , ([1,2], Opt_DoEtaReduction)
723 , ([1,2], Opt_CaseMerge)
724 , ([1,2], Opt_Strictness)
726 , ([1,2], Opt_FullLaziness)
728 , ([2], Opt_LiberateCase)
729 , ([2], Opt_SpecConstr)
730 , ([2], Opt_StaticArgumentTransformation)
732 , ([0,1,2], Opt_DoLambdaEtaExpansion)
733 -- This one is important for a tiresome reason:
734 -- we want to make sure that the bindings for data
735 -- constructors are eta-expanded. This is probably
736 -- a good thing anyway, but it seems fragile.
739 -- -----------------------------------------------------------------------------
740 -- Standard sets of warning options
742 standardWarnings :: [DynFlag]
744 = [ Opt_WarnDeprecations,
745 Opt_WarnOverlappingPatterns,
746 Opt_WarnMissingFields,
747 Opt_WarnMissingMethods,
748 Opt_WarnDuplicateExports
751 minusWOpts :: [DynFlag]
753 = standardWarnings ++
754 [ Opt_WarnUnusedBinds,
755 Opt_WarnUnusedMatches,
756 Opt_WarnUnusedImports,
757 Opt_WarnIncompletePatterns,
761 minusWallOpts :: [DynFlag]
764 [ Opt_WarnTypeDefaults,
765 Opt_WarnNameShadowing,
771 -- minuswRemovesOpts should be every warning option
772 minuswRemovesOpts :: [DynFlag]
775 [Opt_WarnImplicitPrelude,
776 Opt_WarnIncompletePatternsRecUpd,
777 Opt_WarnSimplePatterns,
778 Opt_WarnMonomorphism,
782 -- -----------------------------------------------------------------------------
783 -- CoreToDo: abstraction of core-to-core passes to run.
785 data CoreToDo -- These are diff core-to-core passes,
786 -- which may be invoked in any order,
787 -- as many times as you like.
789 = CoreDoSimplify -- The core-to-core simplifier.
792 -- Each run of the simplifier can take a different
793 -- set of simplifier-specific flags.
795 | CoreDoFloatOutwards FloatOutSwitches
800 | CoreDoWorkerWrapper
803 | CoreDoOldStrictness
806 | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
807 -- matching this string
808 | CoreDoVectorisation
809 | CoreDoNothing -- Useful when building up
810 | CoreDoPasses [CoreToDo] -- lists of these things
812 data SimplifierMode -- See comments in SimplMonad
814 | SimplPhase Int [String]
816 data SimplifierSwitch
817 = MaxSimplifierIterations Int
820 data FloatOutSwitches
821 = FloatOutSw Bool -- True <=> float lambdas to top level
822 Bool -- True <=> float constants to top level,
823 -- even if they do not escape a lambda
826 -- The core-to-core pass ordering is derived from the DynFlags:
827 runWhen :: Bool -> CoreToDo -> CoreToDo
828 runWhen True do_this = do_this
829 runWhen False _ = CoreDoNothing
831 runMaybe :: Maybe a -> (a -> CoreToDo) -> CoreToDo
832 runMaybe (Just x) f = f x
833 runMaybe Nothing _ = CoreDoNothing
835 getCoreToDo :: DynFlags -> [CoreToDo]
837 | Just todo <- coreToDo dflags = todo -- set explicitly by user
838 | otherwise = core_todo
840 opt_level = optLevel dflags
841 phases = simplPhases dflags
842 max_iter = maxSimplIterations dflags
843 strictness = dopt Opt_Strictness dflags
844 full_laziness = dopt Opt_FullLaziness dflags
845 cse = dopt Opt_CSE dflags
846 spec_constr = dopt Opt_SpecConstr dflags
847 liberate_case = dopt Opt_LiberateCase dflags
848 rule_check = ruleCheck dflags
849 vectorisation = dopt Opt_Vectorise dflags
850 -- static_args = dopt Opt_StaticArgumentTransformation dflags
852 maybe_rule_check phase = runMaybe rule_check (CoreDoRuleCheck phase)
854 simpl_phase phase names iter
856 [ CoreDoSimplify (SimplPhase phase names) [
857 MaxSimplifierIterations iter
859 maybe_rule_check phase
862 -- By default, we have 2 phases before phase 0.
864 -- Want to run with inline phase 2 after the specialiser to give
865 -- maximum chance for fusion to work before we inline build/augment
866 -- in phase 1. This made a difference in 'ansi' where an
867 -- overloaded function wasn't inlined till too late.
869 -- Need phase 1 so that build/augment get
870 -- inlined. I found that spectral/hartel/genfft lost some useful
871 -- strictness in the function sumcode' if augment is not inlined
872 -- before strictness analysis runs
873 simpl_phases = CoreDoPasses [ simpl_phase phase ["main"] max_iter
874 | phase <- [phases, phases-1 .. 1] ]
877 -- initial simplify: mk specialiser happy: minimum effort please
878 simpl_gently = CoreDoSimplify SimplGently [
880 -- Don't inline anything till full laziness has bitten
881 -- In particular, inlining wrappers inhibits floating
882 -- e.g. ...(case f x of ...)...
883 -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
884 -- ==> ...(case x of I# x# -> case fw x# of ...)...
885 -- and now the redex (f x) isn't floatable any more
886 -- Similarly, don't apply any rules until after full
887 -- laziness. Notably, list fusion can prevent floating.
889 NoCaseOfCase, -- Don't do case-of-case transformations.
890 -- This makes full laziness work better
891 MaxSimplifierIterations max_iter
895 if opt_level == 0 then
896 [runWhen vectorisation (CoreDoPasses [ simpl_gently, CoreDoVectorisation ]),
897 simpl_phase 0 ["final"] max_iter]
898 else {- opt_level >= 1 -} [
900 -- We want to do the static argument transform before full laziness as it
901 -- may expose extra opportunities to float things outwards. However, to fix
902 -- up the output of the transformation we need at do at least one simplify
903 -- after this before anything else
904 -- runWhen static_args CoreDoStaticArgs,
905 -- XXX disabled, see #2321
907 -- initial simplify: mk specialiser happy: minimum effort please
910 -- We run vectorisation here for now, but we might also try to run
912 runWhen vectorisation (CoreDoPasses [ CoreDoVectorisation, simpl_gently ]),
914 -- Specialisation is best done before full laziness
915 -- so that overloaded functions have all their dictionary lambdas manifest
918 runWhen full_laziness (CoreDoFloatOutwards (FloatOutSw False False)),
924 -- Phase 0: allow all Ids to be inlined now
925 -- This gets foldr inlined before strictness analysis
927 -- At least 3 iterations because otherwise we land up with
928 -- huge dead expressions because of an infelicity in the
930 -- let k = BIG in foldr k z xs
931 -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
932 -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
934 simpl_phase 0 ["main"] (max max_iter 3),
937 #ifdef OLD_STRICTNESS
940 runWhen strictness (CoreDoPasses [
944 simpl_phase 0 ["post-worker-wrapper"] max_iter
947 runWhen full_laziness
948 (CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
949 True)), -- Float constants
950 -- nofib/spectral/hartel/wang doubles in speed if you
951 -- do full laziness late in the day. It only happens
952 -- after fusion and other stuff, so the early pass doesn't
953 -- catch it. For the record, the redex is
954 -- f_el22 (f_el21 r_midblock)
958 -- We want CSE to follow the final full-laziness pass, because it may
959 -- succeed in commoning up things floated out by full laziness.
960 -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
966 -- Case-liberation for -O2. This should be after
967 -- strictness analysis and the simplification which follows it.
968 runWhen liberate_case (CoreDoPasses [
970 simpl_phase 0 ["post-liberate-case"] max_iter
971 ]), -- Run the simplifier after LiberateCase to vastly
972 -- reduce the possiblility of shadowing
973 -- Reason: see Note [Shadowing] in SpecConstr.lhs
975 runWhen spec_constr CoreDoSpecConstr,
979 -- Final clean-up simplification:
980 simpl_phase 0 ["final"] max_iter
983 -- -----------------------------------------------------------------------------
984 -- StgToDo: abstraction of stg-to-stg passes to run.
987 = StgDoMassageForProfiling -- should be (next to) last
988 -- There's also setStgVarInfo, but its absolute "lastness"
989 -- is so critical that it is hardwired in (no flag).
992 getStgToDo :: DynFlags -> [StgToDo]
994 | Just todo <- stgToDo dflags = todo -- set explicitly by user
997 stg_stats = dopt Opt_StgStats dflags
999 todo1 = if stg_stats then [D_stg_stats] else []
1001 todo2 | WayProf `elem` wayNames dflags
1002 = StgDoMassageForProfiling : todo1
1006 -- -----------------------------------------------------------------------------
1009 allFlags :: [String]
1010 allFlags = map ('-':) $
1011 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1012 map ("fno-"++) flags ++
1013 map ("f"++) flags ++
1014 map ("X"++) supportedLanguages ++
1015 map ("XNo"++) supportedLanguages
1016 where ok (PrefixPred _ _) = False
1018 flags = map fst fFlags
1020 dynamic_flags :: [Flag DynP]
1022 Flag "n" (NoArg (setDynFlag Opt_DryRun)) Supported
1023 , Flag "cpp" (NoArg (setDynFlag Opt_Cpp)) Supported
1024 , Flag "F" (NoArg (setDynFlag Opt_Pp)) Supported
1025 , Flag "#include" (HasArg (addCmdlineHCInclude)) Supported
1026 , Flag "v" (OptIntSuffix setVerbosity) Supported
1028 ------- Specific phases --------------------------------------------
1029 , Flag "pgmL" (HasArg (upd . setPgmL)) Supported
1030 , Flag "pgmP" (HasArg (upd . setPgmP)) Supported
1031 , Flag "pgmF" (HasArg (upd . setPgmF)) Supported
1032 , Flag "pgmc" (HasArg (upd . setPgmc)) Supported
1033 , Flag "pgmm" (HasArg (upd . setPgmm)) Supported
1034 , Flag "pgms" (HasArg (upd . setPgms)) Supported
1035 , Flag "pgma" (HasArg (upd . setPgma)) Supported
1036 , Flag "pgml" (HasArg (upd . setPgml)) Supported
1037 , Flag "pgmdll" (HasArg (upd . setPgmdll)) Supported
1038 , Flag "pgmwindres" (HasArg (upd . setPgmwindres)) Supported
1040 , Flag "optL" (HasArg (upd . addOptL)) Supported
1041 , Flag "optP" (HasArg (upd . addOptP)) Supported
1042 , Flag "optF" (HasArg (upd . addOptF)) Supported
1043 , Flag "optc" (HasArg (upd . addOptc)) Supported
1044 , Flag "optm" (HasArg (upd . addOptm)) Supported
1045 , Flag "opta" (HasArg (upd . addOpta)) Supported
1046 , Flag "optl" (HasArg (upd . addOptl)) Supported
1047 , Flag "optdep" (HasArg (upd . addOptdep)) Supported
1048 , Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
1051 (NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
1054 -------- Linking ----------------------------------------------------
1055 , Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1057 , Flag "no-link" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1058 (Deprecated "Use -c instead")
1059 , Flag "shared" (NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
1061 , Flag "dynload" (HasArg (upd . parseDynLibLoaderMode))
1064 ------- Libraries ---------------------------------------------------
1065 , Flag "L" (Prefix addLibraryPath ) Supported
1066 , Flag "l" (AnySuffix (\s -> do upd (addOptl s))) Supported
1068 ------- Frameworks --------------------------------------------------
1069 -- -framework-path should really be -F ...
1070 , Flag "framework-path" (HasArg addFrameworkPath ) Supported
1071 , Flag "framework" (HasArg (upd . addCmdlineFramework)) Supported
1073 ------- Output Redirection ------------------------------------------
1074 , Flag "odir" (HasArg (upd . setObjectDir)) Supported
1075 , Flag "o" (SepArg (upd . setOutputFile . Just)) Supported
1076 , Flag "ohi" (HasArg (upd . setOutputHi . Just )) Supported
1077 , Flag "osuf" (HasArg (upd . setObjectSuf)) Supported
1078 , Flag "hcsuf" (HasArg (upd . setHcSuf)) Supported
1079 , Flag "hisuf" (HasArg (upd . setHiSuf)) Supported
1080 , Flag "hidir" (HasArg (upd . setHiDir)) Supported
1081 , Flag "tmpdir" (HasArg (upd . setTmpDir)) Supported
1082 , Flag "stubdir" (HasArg (upd . setStubDir)) Supported
1083 , Flag "ddump-file-prefix" (HasArg (upd . setDumpPrefixForce . Just))
1086 ------- Keeping temporary files -------------------------------------
1087 -- These can be singular (think ghc -c) or plural (think ghc --make)
1088 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1089 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1090 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1091 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1092 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1093 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1094 -- This only makes sense as plural
1095 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles)) Supported
1097 ------- Miscellaneous ----------------------------------------------
1098 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain)) Supported
1099 , Flag "main-is" (SepArg setMainIs ) Supported
1100 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock)) Supported
1101 , Flag "haddock-opts" (HasArg (upd . addHaddockOpts)) Supported
1102 , Flag "hpcdir" (SepArg setOptHpcDir) Supported
1104 ------- recompilation checker --------------------------------------
1105 , Flag "recomp" (NoArg (unSetDynFlag Opt_ForceRecomp))
1106 (Deprecated "Use -fno-force-recomp instead")
1107 , Flag "no-recomp" (NoArg (setDynFlag Opt_ForceRecomp))
1108 (Deprecated "Use -fforce-recomp instead")
1110 ------- Packages ----------------------------------------------------
1111 , Flag "package-conf" (HasArg extraPkgConf_) Supported
1112 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1114 , Flag "package-name" (HasArg (upd . setPackageName)) Supported
1115 , Flag "package" (HasArg exposePackage) Supported
1116 , Flag "hide-package" (HasArg hidePackage) Supported
1117 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1119 , Flag "ignore-package" (HasArg ignorePackage)
1121 , Flag "syslib" (HasArg exposePackage)
1122 (Deprecated "Use -package instead")
1124 ------ HsCpp opts ---------------------------------------------------
1125 , Flag "D" (AnySuffix (upd . addOptP)) Supported
1126 , Flag "U" (AnySuffix (upd . addOptP)) Supported
1128 ------- Include/Import Paths ----------------------------------------
1129 , Flag "I" (Prefix addIncludePath) Supported
1130 , Flag "i" (OptPrefix addImportPath ) Supported
1132 ------ Debugging ----------------------------------------------------
1133 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats)) Supported
1135 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1137 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1139 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1141 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1143 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1145 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1147 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1149 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1151 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1153 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1155 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1157 , Flag "ddump-asm-regalloc-stages"
1158 (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1160 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1162 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1164 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1166 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1168 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1170 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1172 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1174 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1176 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1178 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1180 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1182 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1184 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1186 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1188 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1190 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1192 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1194 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1196 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1198 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1200 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1202 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1204 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1206 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1208 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1210 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1212 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1214 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1216 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1218 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1220 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1222 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1224 , Flag "dverbose-core2core" (NoArg setVerboseCore2Core)
1226 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1228 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1230 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1232 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1234 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1236 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1238 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1240 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1242 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1245 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1247 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1249 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1251 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1253 , Flag "dshow-passes"
1254 (NoArg (do setDynFlag Opt_ForceRecomp
1255 setVerbosity (Just 2)))
1257 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1260 ------ Machine dependant (-m<blah>) stuff ---------------------------
1262 , Flag "monly-2-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 2}) ))
1264 , Flag "monly-3-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 3}) ))
1266 , Flag "monly-4-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 4}) ))
1269 ------ Warning opts -------------------------------------------------
1270 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1272 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1274 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1276 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1278 , Flag "Wnot" (NoArg (mapM_ unSetDynFlag minusWallOpts))
1279 (Deprecated "Use -w instead")
1280 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1283 ------ Optimisation flags ------------------------------------------
1284 , Flag "O" (NoArg (upd (setOptLevel 1))) Supported
1285 , Flag "Onot" (NoArg (upd (setOptLevel 0)))
1286 (Deprecated "Use -O0 instead")
1287 , Flag "Odph" (NoArg (upd setDPHOpt)) Supported
1288 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1290 -- If the number is missing, use 1
1292 , Flag "fsimplifier-phases"
1293 (IntSuffix (\n -> upd (\dfs -> dfs{ simplPhases = n })))
1295 , Flag "fmax-simplifier-iterations"
1296 (IntSuffix (\n -> upd (\dfs -> dfs{ maxSimplIterations = n })))
1299 , Flag "fspec-constr-threshold"
1300 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrThreshold = Just n })))
1302 , Flag "fno-spec-constr-threshold"
1303 (NoArg (upd (\dfs -> dfs{ specConstrThreshold = Nothing })))
1305 , Flag "fspec-constr-count"
1306 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrCount = Just n })))
1308 , Flag "fno-spec-constr-count"
1309 (NoArg (upd (\dfs -> dfs{ specConstrCount = Nothing })))
1311 , Flag "fliberate-case-threshold"
1312 (IntSuffix (\n -> upd (\dfs -> dfs{ liberateCaseThreshold = Just n })))
1314 , Flag "fno-liberate-case-threshold"
1315 (NoArg (upd (\dfs -> dfs{ liberateCaseThreshold = Nothing })))
1318 , Flag "frule-check"
1319 (SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s })))
1321 , Flag "fcontext-stack"
1322 (IntSuffix $ \n -> upd $ \dfs -> dfs{ ctxtStkDepth = n })
1325 ------ Compiler flags -----------------------------------------------
1327 , Flag "fasm" (NoArg (setObjTarget HscAsm)) Supported
1328 , Flag "fvia-c" (NoArg (setObjTarget HscC)) Supported
1329 , Flag "fvia-C" (NoArg (setObjTarget HscC)) Supported
1331 , Flag "fno-code" (NoArg (setTarget HscNothing)) Supported
1332 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted)) Supported
1333 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget)) Supported
1335 , Flag "fglasgow-exts" (NoArg (mapM_ setDynFlag glasgowExtsFlags))
1337 , Flag "fno-glasgow-exts" (NoArg (mapM_ unSetDynFlag glasgowExtsFlags))
1340 -- XXX We need to flatten these:
1342 -- the rest of the -f* and -fno-* flags
1344 (PrefixPred (isFlag fFlags)
1345 (\f -> setDynFlag (getFlag fFlags f)))
1348 (PrefixPred (isPrefFlag "no-" fFlags)
1349 (\f -> unSetDynFlag (getPrefFlag "no-" fFlags f)))
1353 map xFlagToFlag xFlags
1355 map xNoFlagToFlag xFlags
1357 xFlagToFlag :: (String, DynFlag, Deprecated) -> Flag DynP
1358 xFlagToFlag = xMaybeFlagToFlag setDynFlag
1360 xNoFlagToFlag :: (String, DynFlag, Deprecated) -> Flag DynP
1361 xNoFlagToFlag = xMaybeFlagToFlag unSetDynFlag
1363 xMaybeFlagToFlag :: (DynFlag -> DynP ()) -> (String, DynFlag, Deprecated)
1365 xMaybeFlagToFlag f (name, dynflag, deprecated)
1366 = Flag ('X' : name) (NoArg (f dynflag)) deprecated
1368 -- these -f<blah> flags can all be reversed with -fno-<blah>
1370 fFlags :: [(String, DynFlag)]
1372 ( "warn-dodgy-imports", Opt_WarnDodgyImports ),
1373 ( "warn-duplicate-exports", Opt_WarnDuplicateExports ),
1374 ( "warn-hi-shadowing", Opt_WarnHiShadows ),
1375 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude ),
1376 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns ),
1377 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd ),
1378 ( "warn-missing-fields", Opt_WarnMissingFields ),
1379 ( "warn-missing-methods", Opt_WarnMissingMethods ),
1380 ( "warn-missing-signatures", Opt_WarnMissingSigs ),
1381 ( "warn-name-shadowing", Opt_WarnNameShadowing ),
1382 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns ),
1383 ( "warn-simple-patterns", Opt_WarnSimplePatterns ),
1384 ( "warn-type-defaults", Opt_WarnTypeDefaults ),
1385 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism ),
1386 ( "warn-unused-binds", Opt_WarnUnusedBinds ),
1387 ( "warn-unused-imports", Opt_WarnUnusedImports ),
1388 ( "warn-unused-matches", Opt_WarnUnusedMatches ),
1389 ( "warn-deprecations", Opt_WarnDeprecations ),
1390 ( "warn-orphans", Opt_WarnOrphans ),
1391 ( "warn-tabs", Opt_WarnTabs ),
1392 ( "print-explicit-foralls", Opt_PrintExplicitForalls ),
1393 ( "strictness", Opt_Strictness ),
1394 ( "static-argument-transformation", Opt_StaticArgumentTransformation ),
1395 ( "full-laziness", Opt_FullLaziness ),
1396 ( "liberate-case", Opt_LiberateCase ),
1397 ( "spec-constr", Opt_SpecConstr ),
1399 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas ),
1400 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas ),
1401 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion ),
1402 ( "ignore-asserts", Opt_IgnoreAsserts ),
1403 ( "do-eta-reduction", Opt_DoEtaReduction ),
1404 ( "case-merge", Opt_CaseMerge ),
1405 ( "unbox-strict-fields", Opt_UnboxStrictFields ),
1406 ( "method-sharing", Opt_MethodSharing ),
1407 ( "dicts-cheap", Opt_DictsCheap ),
1408 ( "excess-precision", Opt_ExcessPrecision ),
1409 ( "asm-mangling", Opt_DoAsmMangling ),
1410 ( "print-bind-result", Opt_PrintBindResult ),
1411 ( "force-recomp", Opt_ForceRecomp ),
1412 ( "hpc-no-auto", Opt_Hpc_No_Auto ),
1413 ( "rewrite-rules", Opt_RewriteRules ),
1414 ( "break-on-exception", Opt_BreakOnException ),
1415 ( "break-on-error", Opt_BreakOnError ),
1416 ( "print-evld-with-show", Opt_PrintEvldWithShow ),
1417 ( "print-bind-contents", Opt_PrintBindContents ),
1418 ( "run-cps", Opt_RunCPSZ ),
1419 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack),
1420 ( "vectorise", Opt_Vectorise ),
1421 ( "regs-graph", Opt_RegsGraph),
1422 ( "regs-iterative", Opt_RegsIterative),
1423 -- Deprecated in favour of -XTemplateHaskell:
1424 ( "th", Opt_TemplateHaskell ),
1425 -- Deprecated in favour of -XForeignFunctionInterface:
1426 ( "fi", Opt_ForeignFunctionInterface ),
1427 -- Deprecated in favour of -XForeignFunctionInterface:
1428 ( "ffi", Opt_ForeignFunctionInterface ),
1429 -- Deprecated in favour of -XArrows:
1430 ( "arrows", Opt_Arrows ),
1431 -- Deprecated in favour of -XGenerics:
1432 ( "generics", Opt_Generics ),
1433 -- Deprecated in favour of -XImplicitPrelude:
1434 ( "implicit-prelude", Opt_ImplicitPrelude ),
1435 -- Deprecated in favour of -XBangPatterns:
1436 ( "bang-patterns", Opt_BangPatterns ),
1437 -- Deprecated in favour of -XMonomorphismRestriction:
1438 ( "monomorphism-restriction", Opt_MonomorphismRestriction ),
1439 -- Deprecated in favour of -XMonoPatBinds:
1440 ( "mono-pat-binds", Opt_MonoPatBinds ),
1441 -- Deprecated in favour of -XExtendedDefaultRules:
1442 ( "extended-default-rules", Opt_ExtendedDefaultRules ),
1443 -- Deprecated in favour of -XImplicitParams:
1444 ( "implicit-params", Opt_ImplicitParams ),
1445 -- Deprecated in favour of -XScopedTypeVariables:
1446 ( "scoped-type-variables", Opt_ScopedTypeVariables ),
1447 -- Deprecated in favour of -XPArr:
1448 ( "parr", Opt_PArr ),
1449 -- Deprecated in favour of -XOverlappingInstances:
1450 ( "allow-overlapping-instances", Opt_OverlappingInstances ),
1451 -- Deprecated in favour of -XUndecidableInstances:
1452 ( "allow-undecidable-instances", Opt_UndecidableInstances ),
1453 -- Deprecated in favour of -XIncoherentInstances:
1454 ( "allow-incoherent-instances", Opt_IncoherentInstances ),
1455 ( "gen-manifest", Opt_GenManifest ),
1456 ( "embed-manifest", Opt_EmbedManifest )
1459 supportedLanguages :: [String]
1460 supportedLanguages = [ name | (name, _, _) <- xFlags ]
1462 -- This may contain duplicates
1463 languageOptions :: [DynFlag]
1464 languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
1466 -- These -X<blah> flags can all be reversed with -XNo<blah>
1467 xFlags :: [(String, DynFlag, Deprecated)]
1469 ( "CPP", Opt_Cpp, Supported ),
1470 ( "PatternGuards", Opt_PatternGuards, Supported ),
1471 ( "UnicodeSyntax", Opt_UnicodeSyntax, Supported ),
1472 ( "MagicHash", Opt_MagicHash, Supported ),
1473 ( "PolymorphicComponents", Opt_PolymorphicComponents, Supported ),
1474 ( "ExistentialQuantification", Opt_ExistentialQuantification, Supported ),
1475 ( "KindSignatures", Opt_KindSignatures, Supported ),
1476 ( "PatternSignatures", Opt_PatternSignatures, Supported ),
1477 ( "EmptyDataDecls", Opt_EmptyDataDecls, Supported ),
1478 ( "ParallelListComp", Opt_ParallelListComp, Supported ),
1479 ( "TransformListComp", Opt_TransformListComp, Supported ),
1480 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, Supported ),
1481 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, Supported ),
1482 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, Supported ),
1483 ( "Rank2Types", Opt_Rank2Types, Supported ),
1484 ( "RankNTypes", Opt_RankNTypes, Supported ),
1485 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, Supported ),
1486 ( "TypeOperators", Opt_TypeOperators, Supported ),
1487 ( "RecursiveDo", Opt_RecursiveDo, Supported ),
1488 ( "Arrows", Opt_Arrows, Supported ),
1489 ( "PArr", Opt_PArr, Supported ),
1490 ( "TemplateHaskell", Opt_TemplateHaskell, Supported ),
1491 ( "QuasiQuotes", Opt_QuasiQuotes, Supported ),
1492 ( "Generics", Opt_Generics, Supported ),
1494 ( "ImplicitPrelude", Opt_ImplicitPrelude, Supported ),
1495 ( "RecordWildCards", Opt_RecordWildCards, Supported ),
1496 ( "NamedFieldPuns", Opt_RecordPuns, Supported ),
1497 ( "RecordPuns", Opt_RecordPuns,
1498 Deprecated "Use the NamedFieldPuns language instead" ),
1499 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, Supported ),
1500 ( "OverloadedStrings", Opt_OverloadedStrings, Supported ),
1501 ( "GADTs", Opt_GADTs, Supported ),
1502 ( "ViewPatterns", Opt_ViewPatterns, Supported ),
1503 ( "TypeFamilies", Opt_TypeFamilies, Supported ),
1504 ( "BangPatterns", Opt_BangPatterns, Supported ),
1506 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, Supported ),
1507 -- On by default (which is not strictly H98):
1508 ( "MonoPatBinds", Opt_MonoPatBinds, Supported ),
1509 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, Supported ),
1510 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, Supported ),
1511 ( "ImplicitParams", Opt_ImplicitParams, Supported ),
1512 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, Supported ),
1513 ( "UnboxedTuples", Opt_UnboxedTuples, Supported ),
1514 ( "StandaloneDeriving", Opt_StandaloneDeriving, Supported ),
1515 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, Supported ),
1516 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, Supported ),
1517 ( "FlexibleContexts", Opt_FlexibleContexts, Supported ),
1518 ( "FlexibleInstances", Opt_FlexibleInstances, Supported ),
1519 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, Supported ),
1520 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, Supported ),
1521 ( "FunctionalDependencies", Opt_FunctionalDependencies, Supported ),
1522 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, Supported ),
1523 ( "OverlappingInstances", Opt_OverlappingInstances, Supported ),
1524 ( "UndecidableInstances", Opt_UndecidableInstances, Supported ),
1525 ( "IncoherentInstances", Opt_IncoherentInstances, Supported )
1528 impliedFlags :: [(DynFlag, [DynFlag])]
1530 ( Opt_GADTs, [Opt_RelaxedPolyRec] ) -- We want type-sig variables to
1531 -- be completely rigid for GADTs
1532 , ( Opt_ScopedTypeVariables, [Opt_RelaxedPolyRec] ) -- Ditto for scoped type variables; see
1533 -- Note [Scoped tyvars] in TcBinds
1536 glasgowExtsFlags :: [DynFlag]
1537 glasgowExtsFlags = [
1538 Opt_PrintExplicitForalls
1539 , Opt_ForeignFunctionInterface
1540 , Opt_UnliftedFFITypes
1542 , Opt_ImplicitParams
1543 , Opt_ScopedTypeVariables
1545 , Opt_TypeSynonymInstances
1546 , Opt_StandaloneDeriving
1547 , Opt_DeriveDataTypeable
1548 , Opt_FlexibleContexts
1549 , Opt_FlexibleInstances
1550 , Opt_ConstrainedClassMethods
1551 , Opt_MultiParamTypeClasses
1552 , Opt_FunctionalDependencies
1554 , Opt_PolymorphicComponents
1555 , Opt_ExistentialQuantification
1558 , Opt_LiberalTypeSynonyms
1560 , Opt_ImpredicativeTypes
1563 , Opt_ParallelListComp
1564 , Opt_EmptyDataDecls
1565 , Opt_KindSignatures
1566 , Opt_PatternSignatures
1567 , Opt_GeneralizedNewtypeDeriving
1568 , Opt_TypeFamilies ]
1571 isFlag :: [(String,a)] -> String -> Bool
1572 isFlag flags f = any (\(ff,_) -> ff == f) flags
1574 isPrefFlag :: String -> [(String,a)] -> String -> Bool
1575 isPrefFlag pref flags no_f
1576 | Just f <- maybePrefixMatch pref no_f = isFlag flags f
1580 getFlag :: [(String,a)] -> String -> a
1581 getFlag flags f = case [ opt | (ff, opt) <- flags, ff == f] of
1583 [] -> panic ("get_flag " ++ f)
1585 getPrefFlag :: String -> [(String,a)] -> String -> a
1586 getPrefFlag pref flags f = getFlag flags (fromJust (maybePrefixMatch pref f))
1587 -- We should only be passed flags which match the prefix
1589 -- -----------------------------------------------------------------------------
1590 -- Parsing the dynamic flags.
1592 parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags, [String], [String])
1593 parseDynamicFlags dflags args = do
1594 let ((leftover, errs, warns), dflags')
1595 = runCmdLine (processArgs dynamic_flags args) dflags
1596 when (not (null errs)) $ do
1597 throwDyn (UsageError (unlines errs))
1598 return (dflags', leftover, warns)
1600 type DynP = CmdLineP DynFlags
1602 upd :: (DynFlags -> DynFlags) -> DynP ()
1604 dfs <- getCmdLineState
1605 putCmdLineState $! (f dfs)
1607 --------------------------
1608 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1609 setDynFlag f = upd (\dfs -> foldl dopt_set (dopt_set dfs f) deps)
1611 deps = [ d | (f', ds) <- impliedFlags, f' == f, d <- ds ]
1612 -- When you set f, set the ones it implies
1613 -- When you un-set f, however, we don't un-set the things it implies
1614 -- (except for -fno-glasgow-exts, which is treated specially)
1616 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1618 --------------------------
1619 setDumpFlag :: DynFlag -> OptKind DynP
1620 setDumpFlag dump_flag
1621 | force_recomp = NoArg (setDynFlag Opt_ForceRecomp >> setDynFlag dump_flag)
1622 | otherwise = NoArg (setDynFlag dump_flag)
1624 -- Whenver we -ddump, switch off the recompilation checker,
1625 -- else you don't see the dump!
1626 -- However, certain dumpy-things are really interested in what's going
1627 -- on during recompilation checking, so in those cases we
1628 -- don't want to turn it off.
1629 force_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1630 Opt_D_dump_hi_diffs]
1632 setVerboseCore2Core :: DynP ()
1633 setVerboseCore2Core = do setDynFlag Opt_ForceRecomp
1634 setDynFlag Opt_D_verbose_core2core
1635 upd (\s -> s { shouldDumpSimplPhase = const True })
1637 setDumpSimplPhases :: String -> DynP ()
1638 setDumpSimplPhases s = do setDynFlag Opt_ForceRecomp
1639 upd (\s -> s { shouldDumpSimplPhase = spec })
1641 spec :: SimplifierMode -> Bool
1643 . map (join (&&) . map match . split ':')
1649 join :: (Bool -> Bool -> Bool)
1650 -> [SimplifierMode -> Bool]
1651 -> SimplifierMode -> Bool
1652 join _ [] = const True
1653 join op ss = foldr1 (\f g x -> f x `op` g x) ss
1655 match :: String -> SimplifierMode -> Bool
1656 match "" = const True
1657 match s = case reads s of
1658 [(n,"")] -> phase_num n
1661 phase_num :: Int -> SimplifierMode -> Bool
1662 phase_num n (SimplPhase k _) = n == k
1663 phase_num _ _ = False
1665 phase_name :: String -> SimplifierMode -> Bool
1666 phase_name s SimplGently = s == "gentle"
1667 phase_name s (SimplPhase _ ss) = s `elem` ss
1669 setVerbosity :: Maybe Int -> DynP ()
1670 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1672 addCmdlineHCInclude :: String -> DynP ()
1673 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1675 extraPkgConf_ :: FilePath -> DynP ()
1676 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1678 exposePackage, hidePackage, ignorePackage :: String -> DynP ()
1680 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1682 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1684 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1686 setPackageName :: String -> DynFlags -> DynFlags
1688 | Nothing <- unpackPackageId pid
1689 = throwDyn (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
1691 = \s -> s{ thisPackage = pid }
1693 pid = stringToPackageId p
1695 -- If we're linking a binary, then only targets that produce object
1696 -- code are allowed (requests for other target types are ignored).
1697 setTarget :: HscTarget -> DynP ()
1698 setTarget l = upd set
1701 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1704 -- Changes the target only if we're compiling object code. This is
1705 -- used by -fasm and -fvia-C, which switch from one to the other, but
1706 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1707 -- can be safely used in an OPTIONS_GHC pragma.
1708 setObjTarget :: HscTarget -> DynP ()
1709 setObjTarget l = upd set
1712 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1715 setOptLevel :: Int -> DynFlags -> DynFlags
1716 setOptLevel n dflags
1717 | hscTarget dflags == HscInterpreted && n > 0
1719 -- not in IO any more, oh well:
1720 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1722 = updOptLevel n dflags
1725 -- -Odph is equivalent to
1727 -- -O2 optimise as much as possible
1728 -- -fno-method-sharing sharing specialisation defeats fusion
1730 -- -fdicts-cheap always inline dictionaries
1731 -- -fmax-simplifier-iterations20 this is necessary sometimes
1732 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1734 setDPHOpt :: DynFlags -> DynFlags
1735 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1736 , specConstrThreshold = Nothing
1738 `dopt_set` Opt_DictsCheap
1739 `dopt_unset` Opt_MethodSharing
1743 setMainIs :: String -> DynP ()
1745 | not (null main_fn) && isLower (head main_fn)
1746 -- The arg looked like "Foo.Bar.baz"
1747 = upd $ \d -> d{ mainFunIs = Just main_fn,
1748 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
1750 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
1751 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
1753 | otherwise -- The arg looked like "baz"
1754 = upd $ \d -> d{ mainFunIs = Just arg }
1756 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
1758 -----------------------------------------------------------------------------
1759 -- Paths & Libraries
1761 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
1763 -- -i on its own deletes the import paths
1764 addImportPath "" = upd (\s -> s{importPaths = []})
1765 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
1769 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
1772 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
1774 addFrameworkPath p =
1775 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
1777 #ifndef mingw32_TARGET_OS
1778 split_marker :: Char
1779 split_marker = ':' -- not configurable (ToDo)
1782 splitPathList :: String -> [String]
1783 splitPathList s = filter notNull (splitUp s)
1784 -- empty paths are ignored: there might be a trailing
1785 -- ':' in the initial list, for example. Empty paths can
1786 -- cause confusion when they are translated into -I options
1787 -- for passing to gcc.
1789 #ifndef mingw32_TARGET_OS
1790 splitUp xs = split split_marker xs
1792 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
1794 -- That is, if "foo:bar:baz" is used, this interpreted as
1795 -- consisting of three entries, 'foo', 'bar', 'baz'.
1796 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
1797 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
1799 -- Notice that no attempt is made to fully replace the 'standard'
1800 -- split marker ':' with the Windows / DOS one, ';'. The reason being
1801 -- that this will cause too much breakage for users & ':' will
1802 -- work fine even with DOS paths, if you're not insisting on being silly.
1805 splitUp (x:':':div:xs) | div `elem` dir_markers
1806 = ((x:':':div:p): splitUp rs)
1808 (p,rs) = findNextPath xs
1809 -- we used to check for existence of the path here, but that
1810 -- required the IO monad to be threaded through the command-line
1811 -- parser which is quite inconvenient. The
1812 splitUp xs = cons p (splitUp rs)
1814 (p,rs) = findNextPath xs
1819 -- will be called either when we've consumed nought or the
1820 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
1821 -- finding the next split marker.
1823 case break (`elem` split_markers) xs of
1824 (p, _:ds) -> (p, ds)
1827 split_markers :: [Char]
1828 split_markers = [':', ';']
1830 dir_markers :: [Char]
1831 dir_markers = ['/', '\\']
1834 -- -----------------------------------------------------------------------------
1835 -- tmpDir, where we store temporary files.
1837 setTmpDir :: FilePath -> DynFlags -> DynFlags
1838 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
1839 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
1840 -- seem necessary now --SDM 7/2/2008
1842 -----------------------------------------------------------------------------
1845 setOptHpcDir :: String -> DynP ()
1846 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
1848 -----------------------------------------------------------------------------
1849 -- Via-C compilation stuff
1851 -- There are some options that we need to pass to gcc when compiling
1852 -- Haskell code via C, but are only supported by recent versions of
1853 -- gcc. The configure script decides which of these options we need,
1854 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
1855 -- read before each via-C compilation. The advantage of having these
1856 -- in a separate file is that the file can be created at install-time
1857 -- depending on the available gcc version, and even re-generated later
1858 -- if gcc is upgraded.
1860 -- The options below are not dependent on the version of gcc, only the
1863 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
1864 [String]) -- for registerised HC compilations
1865 machdepCCOpts _dflags
1866 #if alpha_TARGET_ARCH
1868 #ifdef HAVE_THREADED_RTS_SUPPORT
1872 -- For now, to suppress the gcc warning "call-clobbered
1873 -- register used for global register variable", we simply
1874 -- disable all warnings altogether using the -w flag. Oh well.
1876 #elif hppa_TARGET_ARCH
1877 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1878 -- (very nice, but too bad the HP /usr/include files don't agree.)
1879 = ( ["-D_HPUX_SOURCE"], [] )
1881 #elif m68k_TARGET_ARCH
1882 -- -fno-defer-pop : for the .hc files, we want all the pushing/
1883 -- popping of args to routines to be explicit; if we let things
1884 -- be deferred 'til after an STGJUMP, imminent death is certain!
1886 -- -fomit-frame-pointer : *don't*
1887 -- It's better to have a6 completely tied up being a frame pointer
1888 -- rather than let GCC pick random things to do with it.
1889 -- (If we want to steal a6, then we would try to do things
1890 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
1891 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
1893 #elif i386_TARGET_ARCH
1894 -- -fno-defer-pop : basically the same game as for m68k
1896 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
1897 -- the fp (%ebp) for our register maps.
1898 = let n_regs = stolen_x86_regs _dflags
1901 ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
1902 -- , if "mingw32" `isSuffixOf` cTARGETPLATFORM then "-mno-cygwin" else ""
1905 "-fomit-frame-pointer",
1906 -- we want -fno-builtin, because when gcc inlines
1907 -- built-in functions like memcpy() it tends to
1908 -- run out of registers, requiring -monly-n-regs
1910 "-DSTOLEN_X86_REGS="++show n_regs ]
1913 #elif ia64_TARGET_ARCH
1914 = ( [], ["-fomit-frame-pointer", "-G0"] )
1916 #elif x86_64_TARGET_ARCH
1917 = ( [], ["-fomit-frame-pointer",
1918 "-fno-asynchronous-unwind-tables",
1919 -- the unwind tables are unnecessary for HC code,
1920 -- and get in the way of -split-objs. Another option
1921 -- would be to throw them away in the mangler, but this
1924 -- calling builtins like strlen() using the FFI can
1925 -- cause gcc to run out of regs, so use the external
1929 #elif sparc_TARGET_ARCH
1931 -- For now, to suppress the gcc warning "call-clobbered
1932 -- register used for global register variable", we simply
1933 -- disable all warnings altogether using the -w flag. Oh well.
1935 #elif powerpc_apple_darwin_TARGET
1937 -- Disable Apple's precompiling preprocessor. It's a great thing
1938 -- for "normal" programs, but it doesn't support register variable
1940 = ( [], ["-no-cpp-precomp"] )
1945 picCCOpts :: DynFlags -> [String]
1947 #if darwin_TARGET_OS
1948 -- Apple prefers to do things the other way round.
1949 -- PIC is on by default.
1950 -- -mdynamic-no-pic:
1951 -- Turn off PIC code generation.
1953 -- Don't generate "common" symbols - these are unwanted
1954 -- in dynamic libraries.
1957 = ["-fno-common", "-D__PIC__"]
1959 = ["-mdynamic-no-pic"]
1960 #elif mingw32_TARGET_OS
1961 -- no -fPIC for Windows
1968 = ["-fPIC", "-D__PIC__"]
1973 -- -----------------------------------------------------------------------------
1977 can_split = cSplitObjs == "YES"
1979 -- -----------------------------------------------------------------------------
1982 compilerInfo :: [(String, String)]
1983 compilerInfo = [("Project name", cProjectName),
1984 ("Project version", cProjectVersion),
1985 ("Booter version", cBooterVersion),
1987 ("Interface file version", cHscIfaceFileVersion),
1988 ("Have interpreter", cGhcWithInterpreter),
1989 ("Object splitting", cSplitObjs),
1990 ("Have native code generator", cGhcWithNativeCodeGen),
1991 ("Support SMP", cGhcWithSMP),
1992 ("Unregisterised", cGhcUnregisterised),
1993 ("Tables next to code", cGhcEnableTablesNextToCode),
1994 ("Win32 DLLs", cEnableWin32DLLs),
1995 ("RTS ways", cGhcRTSWays),
1996 ("Leading underscore", cLeadingUnderscore),
1997 ("Debug on", show debugIsOn)