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 )
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_WarnDeprecatedFlags
173 | Opt_WarnDodgyImports
178 | Opt_OverlappingInstances
179 | Opt_UndecidableInstances
180 | Opt_IncoherentInstances
181 | Opt_MonomorphismRestriction
183 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
184 | Opt_ForeignFunctionInterface
185 | Opt_UnliftedFFITypes
186 | Opt_PArr -- Syntactic support for parallel arrays
187 | Opt_Arrows -- Arrow-notation syntax
188 | Opt_TemplateHaskell
192 | Opt_ImplicitPrelude
193 | Opt_ScopedTypeVariables
197 | Opt_OverloadedStrings
198 | Opt_DisambiguateRecordFields
199 | Opt_RecordWildCards
204 | Opt_StandaloneDeriving
205 | Opt_DeriveDataTypeable
206 | Opt_TypeSynonymInstances
207 | Opt_FlexibleContexts
208 | Opt_FlexibleInstances
209 | Opt_ConstrainedClassMethods
210 | Opt_MultiParamTypeClasses
211 | Opt_FunctionalDependencies
213 | Opt_PolymorphicComponents
214 | Opt_ExistentialQuantification
218 | Opt_PatternSignatures
219 | Opt_ParallelListComp
220 | Opt_TransformListComp
221 | Opt_GeneralizedNewtypeDeriving
224 | Opt_LiberalTypeSynonyms
227 | Opt_ImpredicativeTypes
230 | Opt_PrintExplicitForalls
235 | Opt_StaticArgumentTransformation
239 | Opt_IgnoreInterfacePragmas
240 | Opt_OmitInterfacePragmas
241 | Opt_DoLambdaEtaExpansion
245 | Opt_UnboxStrictFields
250 | Opt_RegsGraph -- do graph coloring register allocation
251 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
259 | Opt_ExcessPrecision
260 | Opt_ReadUserPackageConf
264 | Opt_HideAllPackages
265 | Opt_PrintBindResult
269 | Opt_BreakOnException
271 | Opt_PrintEvldWithShow
272 | Opt_PrintBindContents
276 | Opt_ConvertToZipCfgAndBack
287 data DynFlags = DynFlags {
290 coreToDo :: Maybe [CoreToDo], -- reserved for -Ofile
291 stgToDo :: Maybe [StgToDo], -- similarly
292 hscTarget :: HscTarget,
293 hscOutName :: String, -- name of the output file
294 extCoreName :: String, -- name of the .core output file
295 verbosity :: Int, -- verbosity level
296 optLevel :: Int, -- optimisation level
297 simplPhases :: Int, -- number of simplifier phases
298 maxSimplIterations :: Int, -- max simplifier iterations
299 shouldDumpSimplPhase :: SimplifierMode -> Bool,
300 ruleCheck :: Maybe String,
302 specConstrThreshold :: Maybe Int, -- Threshold for SpecConstr
303 specConstrCount :: Maybe Int, -- Max number of specialisations for any one function
304 liberateCaseThreshold :: Maybe Int, -- Threshold for LiberateCase
306 stolen_x86_regs :: Int,
307 cmdlineHcIncludes :: [String], -- -#includes
308 importPaths :: [FilePath],
310 mainFunIs :: Maybe String,
311 ctxtStkDepth :: Int, -- Typechecker context stack depth
313 thisPackage :: PackageId,
316 wayNames :: [WayName], -- way flags from the cmd line
317 buildTag :: String, -- the global "way" (eg. "p" for prof)
318 rtsBuildTag :: String, -- the RTS "way"
321 objectDir :: Maybe String,
322 hiDir :: Maybe String,
323 stubDir :: Maybe String,
329 outputFile :: Maybe String,
330 outputHi :: Maybe String,
331 dynLibLoader :: DynLibLoader,
333 -- | This is set by DriverPipeline.runPipeline based on where
334 -- its output is going.
335 dumpPrefix :: Maybe FilePath,
337 -- | Override the dumpPrefix set by runPipeline.
338 -- Set by -ddump-file-prefix
339 dumpPrefixForce :: Maybe FilePath,
341 includePaths :: [String],
342 libraryPaths :: [String],
343 frameworkPaths :: [String], -- used on darwin only
344 cmdlineFrameworks :: [String], -- ditto
345 tmpDir :: String, -- no trailing '/'
347 ghcUsagePath :: FilePath, -- Filled in by SysTools
348 ghciUsagePath :: FilePath, -- ditto
350 hpcDir :: String, -- ^ path to store the .mix files
352 -- options for particular phases
361 opt_windres :: [String],
363 -- commands for particular phases
365 pgm_P :: (String,[Option]),
367 pgm_c :: (String,[Option]),
368 pgm_m :: (String,[Option]),
369 pgm_s :: (String,[Option]),
370 pgm_a :: (String,[Option]),
371 pgm_l :: (String,[Option]),
372 pgm_dll :: (String,[Option]),
374 pgm_sysman :: String,
375 pgm_windres :: String,
378 extraPkgConfs :: [FilePath],
379 topDir :: FilePath, -- filled in by SysTools
380 systemPackageConfig :: FilePath, -- ditto
381 -- The -package-conf flags given on the command line, in the order
384 packageFlags :: [PackageFlag],
385 -- The -package and -hide-package flags from the command-line
388 -- NB. do not modify this field, it is calculated by
389 -- Packages.initPackages and Packages.updatePackages.
390 pkgDatabase :: Maybe (UniqFM PackageConfig),
391 pkgState :: PackageState,
397 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
399 haddockOptions :: Maybe String
410 -- | will this target result in an object file on the disk?
411 isObjectTarget :: HscTarget -> Bool
412 isObjectTarget HscC = True
413 isObjectTarget HscAsm = True
414 isObjectTarget _ = False
416 -- | The 'GhcMode' tells us whether we're doing multi-module
417 -- compilation (controlled via the "GHC" API) or one-shot
418 -- (single-module) compilation. This makes a difference primarily to
419 -- the "Finder": in one-shot mode we look for interface files for
420 -- imported modules, but in multi-module mode we look for source files
421 -- in order to check whether they need to be recompiled.
423 = CompManager -- ^ --make, GHCi, etc.
424 | OneShot -- ^ ghc -c Foo.hs
425 | MkDepend -- ^ ghc -M, see Finder for why we need this
428 isOneShot :: GhcMode -> Bool
429 isOneShot OneShot = True
430 isOneShot _other = False
432 -- | What kind of linking to do.
433 data GhcLink -- What to do in the link step, if there is one
434 = NoLink -- Don't link at all
435 | LinkBinary -- Link object code into a binary
436 | LinkInMemory -- Use the in-memory dynamic linker
437 | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
440 isNoLink :: GhcLink -> Bool
441 isNoLink NoLink = True
445 = ExposePackage String
447 | IgnorePackage String
450 defaultHscTarget :: HscTarget
451 defaultHscTarget = defaultObjectTarget
453 -- | the 'HscTarget' value corresponding to the default way to create
454 -- object files on the current platform.
455 defaultObjectTarget :: HscTarget
457 | cGhcWithNativeCodeGen == "YES" = HscAsm
462 | Wrapped (Maybe String)
466 initDynFlags :: DynFlags -> IO DynFlags
467 initDynFlags dflags = do
468 -- someday these will be dynamic flags
469 ways <- readIORef v_Ways
470 build_tag <- readIORef v_Build_tag
471 rts_build_tag <- readIORef v_RTS_Build_tag
474 buildTag = build_tag,
475 rtsBuildTag = rts_build_tag
478 defaultDynFlags :: DynFlags
481 ghcMode = CompManager,
482 ghcLink = LinkBinary,
485 hscTarget = defaultHscTarget,
491 maxSimplIterations = 4,
492 shouldDumpSimplPhase = const False,
494 specConstrThreshold = Just 200,
495 specConstrCount = Just 3,
496 liberateCaseThreshold = Just 200,
498 cmdlineHcIncludes = [],
502 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
504 thisPackage = mainPackageId,
510 objectSuf = phaseInputExt StopLn,
511 hcSuf = phaseInputExt HCc,
514 outputFile = Nothing,
516 dynLibLoader = Deployable,
517 dumpPrefix = Nothing,
518 dumpPrefixForce = Nothing,
522 cmdlineFrameworks = [],
523 tmpDir = cDEFAULT_TMPDIR,
541 pkgDatabase = Nothing,
542 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
543 wayNames = panic "defaultDynFlags: No wayNames",
544 buildTag = panic "defaultDynFlags: No buildTag",
545 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
546 -- initSysTools fills all these in
547 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
548 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
549 topDir = panic "defaultDynFlags: No topDir",
550 systemPackageConfig = panic "defaultDynFlags: No systemPackageConfig",
551 pgm_L = panic "defaultDynFlags: No pgm_L",
552 pgm_P = panic "defaultDynFlags: No pgm_P",
553 pgm_F = panic "defaultDynFlags: No pgm_F",
554 pgm_c = panic "defaultDynFlags: No pgm_c",
555 pgm_m = panic "defaultDynFlags: No pgm_m",
556 pgm_s = panic "defaultDynFlags: No pgm_s",
557 pgm_a = panic "defaultDynFlags: No pgm_a",
558 pgm_l = panic "defaultDynFlags: No pgm_l",
559 pgm_dll = panic "defaultDynFlags: No pgm_dll",
560 pgm_T = panic "defaultDynFlags: No pgm_T",
561 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
562 pgm_windres = panic "defaultDynFlags: No pgm_windres",
563 -- end of initSysTools values
564 haddockOptions = Nothing,
566 Opt_ReadUserPackageConf,
568 Opt_MonoPatBinds, -- Experimentally, I'm making this non-standard
569 -- behaviour the default, to see if anyone notices
573 Opt_MonomorphismRestriction,
581 Opt_PrintBindContents
583 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
584 -- The default -O0 options
587 log_action = \severity srcSpan style msg ->
589 SevInfo -> hPutStrLn stderr (show (msg style))
590 SevFatal -> hPutStrLn stderr (show (msg style))
591 _ -> hPutStrLn stderr ('\n':show ((mkLocMessage srcSpan msg) style))
597 0 | print errors & warnings only
598 1 | minimal verbosity: print "compiling M ... done." for each module.
599 2 | equivalent to -dshow-passes
600 3 | equivalent to existing "ghc -v"
601 4 | "ghc -v -ddump-most"
602 5 | "ghc -v -ddump-all"
605 dopt :: DynFlag -> DynFlags -> Bool
606 dopt f dflags = f `elem` (flags dflags)
608 dopt_set :: DynFlags -> DynFlag -> DynFlags
609 dopt_set dfs f = dfs{ flags = f : flags dfs }
611 dopt_unset :: DynFlags -> DynFlag -> DynFlags
612 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
614 getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
615 getOpts dflags opts = reverse (opts dflags)
616 -- We add to the options from the front, so we need to reverse the list
618 getVerbFlag :: DynFlags -> String
620 | verbosity dflags >= 3 = "-v"
623 setObjectDir, setHiDir, setStubDir, setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
624 setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
625 addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptdep, addOptwindres,
626 addCmdlineFramework, addHaddockOpts
627 :: String -> DynFlags -> DynFlags
628 setOutputFile, setOutputHi, setDumpPrefixForce
629 :: Maybe String -> DynFlags -> DynFlags
631 setObjectDir f d = d{ objectDir = Just f}
632 setHiDir f d = d{ hiDir = Just f}
633 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
634 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
635 -- #included from the .hc file when compiling with -fvia-C.
637 setObjectSuf f d = d{ objectSuf = f}
638 setHiSuf f d = d{ hiSuf = f}
639 setHcSuf f d = d{ hcSuf = f}
641 setOutputFile f d = d{ outputFile = f}
642 setOutputHi f d = d{ outputHi = f}
644 parseDynLibLoaderMode f d =
646 ("deploy", "") -> d{ dynLibLoader = Deployable }
647 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
648 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
649 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
650 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
651 (_,_) -> error "Unknown dynlib loader"
653 setDumpPrefixForce f d = d { dumpPrefixForce = f}
655 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
656 -- Config.hs should really use Option.
657 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
659 setPgmL f d = d{ pgm_L = f}
660 setPgmF f d = d{ pgm_F = f}
661 setPgmc f d = d{ pgm_c = (f,[])}
662 setPgmm f d = d{ pgm_m = (f,[])}
663 setPgms f d = d{ pgm_s = (f,[])}
664 setPgma f d = d{ pgm_a = (f,[])}
665 setPgml f d = d{ pgm_l = (f,[])}
666 setPgmdll f d = d{ pgm_dll = (f,[])}
667 setPgmwindres f d = d{ pgm_windres = f}
669 addOptL f d = d{ opt_L = f : opt_L d}
670 addOptP f d = d{ opt_P = f : opt_P d}
671 addOptF f d = d{ opt_F = f : opt_F d}
672 addOptc f d = d{ opt_c = f : opt_c d}
673 addOptm f d = d{ opt_m = f : opt_m d}
674 addOpta f d = d{ opt_a = f : opt_a d}
675 addOptl f d = d{ opt_l = f : opt_l d}
676 addOptdep f d = d{ opt_dep = f : opt_dep d}
677 addOptwindres f d = d{ opt_windres = f : opt_windres d}
679 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
681 addHaddockOpts f d = d{ haddockOptions = Just f}
683 -- -----------------------------------------------------------------------------
684 -- Command-line options
686 -- When invoking external tools as part of the compilation pipeline, we
687 -- pass these a sequence of options on the command-line. Rather than
688 -- just using a list of Strings, we use a type that allows us to distinguish
689 -- between filepaths and 'other stuff'. [The reason being, of course, that
690 -- this type gives us a handle on transforming filenames, and filenames only,
691 -- to whatever format they're expected to be on a particular platform.]
694 = FileOption -- an entry that _contains_ filename(s) / filepaths.
695 String -- a non-filepath prefix that shouldn't be
696 -- transformed (e.g., "/out=")
697 String -- the filepath/filename portion
700 -----------------------------------------------------------------------------
701 -- Setting the optimisation level
703 updOptLevel :: Int -> DynFlags -> DynFlags
704 -- Set dynflags appropriate to the optimisation level
706 = dfs2{ optLevel = final_n }
708 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
709 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
710 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
712 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
713 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
715 optLevelFlags :: [([Int], DynFlag)]
717 = [ ([0], Opt_IgnoreInterfacePragmas)
718 , ([0], Opt_OmitInterfacePragmas)
720 , ([1,2], Opt_IgnoreAsserts)
721 , ([1,2], Opt_RewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
723 , ([1,2], Opt_DoEtaReduction)
724 , ([1,2], Opt_CaseMerge)
725 , ([1,2], Opt_Strictness)
727 , ([1,2], Opt_FullLaziness)
729 , ([2], Opt_LiberateCase)
730 , ([2], Opt_SpecConstr)
731 , ([2], Opt_StaticArgumentTransformation)
733 , ([0,1,2], Opt_DoLambdaEtaExpansion)
734 -- This one is important for a tiresome reason:
735 -- we want to make sure that the bindings for data
736 -- constructors are eta-expanded. This is probably
737 -- a good thing anyway, but it seems fragile.
740 -- -----------------------------------------------------------------------------
741 -- Standard sets of warning options
743 standardWarnings :: [DynFlag]
745 = [ Opt_WarnDeprecations,
746 Opt_WarnDeprecatedFlags,
747 Opt_WarnOverlappingPatterns,
748 Opt_WarnMissingFields,
749 Opt_WarnMissingMethods,
750 Opt_WarnDuplicateExports
753 minusWOpts :: [DynFlag]
755 = standardWarnings ++
756 [ Opt_WarnUnusedBinds,
757 Opt_WarnUnusedMatches,
758 Opt_WarnUnusedImports,
759 Opt_WarnIncompletePatterns,
763 minusWallOpts :: [DynFlag]
766 [ Opt_WarnTypeDefaults,
767 Opt_WarnNameShadowing,
773 -- minuswRemovesOpts should be every warning option
774 minuswRemovesOpts :: [DynFlag]
777 [Opt_WarnImplicitPrelude,
778 Opt_WarnIncompletePatternsRecUpd,
779 Opt_WarnSimplePatterns,
780 Opt_WarnMonomorphism,
784 -- -----------------------------------------------------------------------------
785 -- CoreToDo: abstraction of core-to-core passes to run.
787 data CoreToDo -- These are diff core-to-core passes,
788 -- which may be invoked in any order,
789 -- as many times as you like.
791 = CoreDoSimplify -- The core-to-core simplifier.
794 -- Each run of the simplifier can take a different
795 -- set of simplifier-specific flags.
797 | CoreDoFloatOutwards FloatOutSwitches
802 | CoreDoWorkerWrapper
805 | CoreDoOldStrictness
808 | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
809 -- matching this string
810 | CoreDoVectorisation
811 | CoreDoNothing -- Useful when building up
812 | CoreDoPasses [CoreToDo] -- lists of these things
814 data SimplifierMode -- See comments in SimplMonad
816 | SimplPhase Int [String]
818 data SimplifierSwitch
819 = MaxSimplifierIterations Int
822 data FloatOutSwitches
823 = FloatOutSw Bool -- True <=> float lambdas to top level
824 Bool -- True <=> float constants to top level,
825 -- even if they do not escape a lambda
828 -- The core-to-core pass ordering is derived from the DynFlags:
829 runWhen :: Bool -> CoreToDo -> CoreToDo
830 runWhen True do_this = do_this
831 runWhen False _ = CoreDoNothing
833 runMaybe :: Maybe a -> (a -> CoreToDo) -> CoreToDo
834 runMaybe (Just x) f = f x
835 runMaybe Nothing _ = CoreDoNothing
837 getCoreToDo :: DynFlags -> [CoreToDo]
839 | Just todo <- coreToDo dflags = todo -- set explicitly by user
840 | otherwise = core_todo
842 opt_level = optLevel dflags
843 phases = simplPhases dflags
844 max_iter = maxSimplIterations dflags
845 strictness = dopt Opt_Strictness dflags
846 full_laziness = dopt Opt_FullLaziness dflags
847 cse = dopt Opt_CSE dflags
848 spec_constr = dopt Opt_SpecConstr dflags
849 liberate_case = dopt Opt_LiberateCase dflags
850 rule_check = ruleCheck dflags
851 vectorisation = dopt Opt_Vectorise dflags
852 static_args = dopt Opt_StaticArgumentTransformation dflags
854 maybe_rule_check phase = runMaybe rule_check (CoreDoRuleCheck phase)
856 simpl_phase phase names iter
858 [ CoreDoSimplify (SimplPhase phase names) [
859 MaxSimplifierIterations iter
861 maybe_rule_check phase
864 -- By default, we have 2 phases before phase 0.
866 -- Want to run with inline phase 2 after the specialiser to give
867 -- maximum chance for fusion to work before we inline build/augment
868 -- in phase 1. This made a difference in 'ansi' where an
869 -- overloaded function wasn't inlined till too late.
871 -- Need phase 1 so that build/augment get
872 -- inlined. I found that spectral/hartel/genfft lost some useful
873 -- strictness in the function sumcode' if augment is not inlined
874 -- before strictness analysis runs
875 simpl_phases = CoreDoPasses [ simpl_phase phase ["main"] max_iter
876 | phase <- [phases, phases-1 .. 1] ]
879 -- initial simplify: mk specialiser happy: minimum effort please
880 simpl_gently = CoreDoSimplify SimplGently [
882 -- Don't inline anything till full laziness has bitten
883 -- In particular, inlining wrappers inhibits floating
884 -- e.g. ...(case f x of ...)...
885 -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
886 -- ==> ...(case x of I# x# -> case fw x# of ...)...
887 -- and now the redex (f x) isn't floatable any more
888 -- Similarly, don't apply any rules until after full
889 -- laziness. Notably, list fusion can prevent floating.
891 NoCaseOfCase, -- Don't do case-of-case transformations.
892 -- This makes full laziness work better
893 MaxSimplifierIterations max_iter
897 if opt_level == 0 then
898 [runWhen vectorisation (CoreDoPasses [ simpl_gently, CoreDoVectorisation ]),
899 simpl_phase 0 ["final"] max_iter]
900 else {- opt_level >= 1 -} [
902 -- We want to do the static argument transform before full laziness as it
903 -- may expose extra opportunities to float things outwards. However, to fix
904 -- up the output of the transformation we need at do at least one simplify
905 -- after this before anything else
906 runWhen static_args (CoreDoPasses [ simpl_gently, CoreDoStaticArgs ]),
908 -- initial simplify: mk specialiser happy: minimum effort please
911 -- We run vectorisation here for now, but we might also try to run
913 runWhen vectorisation (CoreDoPasses [ CoreDoVectorisation, simpl_gently ]),
915 -- Specialisation is best done before full laziness
916 -- so that overloaded functions have all their dictionary lambdas manifest
919 runWhen full_laziness (CoreDoFloatOutwards (FloatOutSw False False)),
925 -- Phase 0: allow all Ids to be inlined now
926 -- This gets foldr inlined before strictness analysis
928 -- At least 3 iterations because otherwise we land up with
929 -- huge dead expressions because of an infelicity in the
931 -- let k = BIG in foldr k z xs
932 -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
933 -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
935 simpl_phase 0 ["main"] (max max_iter 3),
938 #ifdef OLD_STRICTNESS
941 runWhen strictness (CoreDoPasses [
945 simpl_phase 0 ["post-worker-wrapper"] max_iter
948 runWhen full_laziness
949 (CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
950 True)), -- Float constants
951 -- nofib/spectral/hartel/wang doubles in speed if you
952 -- do full laziness late in the day. It only happens
953 -- after fusion and other stuff, so the early pass doesn't
954 -- catch it. For the record, the redex is
955 -- f_el22 (f_el21 r_midblock)
959 -- We want CSE to follow the final full-laziness pass, because it may
960 -- succeed in commoning up things floated out by full laziness.
961 -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
967 -- Case-liberation for -O2. This should be after
968 -- strictness analysis and the simplification which follows it.
969 runWhen liberate_case (CoreDoPasses [
971 simpl_phase 0 ["post-liberate-case"] max_iter
972 ]), -- Run the simplifier after LiberateCase to vastly
973 -- reduce the possiblility of shadowing
974 -- Reason: see Note [Shadowing] in SpecConstr.lhs
976 runWhen spec_constr CoreDoSpecConstr,
980 -- Final clean-up simplification:
981 simpl_phase 0 ["final"] max_iter
984 -- -----------------------------------------------------------------------------
985 -- StgToDo: abstraction of stg-to-stg passes to run.
988 = StgDoMassageForProfiling -- should be (next to) last
989 -- There's also setStgVarInfo, but its absolute "lastness"
990 -- is so critical that it is hardwired in (no flag).
993 getStgToDo :: DynFlags -> [StgToDo]
995 | Just todo <- stgToDo dflags = todo -- set explicitly by user
998 stg_stats = dopt Opt_StgStats dflags
1000 todo1 = if stg_stats then [D_stg_stats] else []
1002 todo2 | WayProf `elem` wayNames dflags
1003 = StgDoMassageForProfiling : todo1
1007 -- -----------------------------------------------------------------------------
1010 allFlags :: [String]
1011 allFlags = map ('-':) $
1012 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1013 map ("fno-"++) flags ++
1014 map ("f"++) flags ++
1015 map ("X"++) supportedLanguages ++
1016 map ("XNo"++) supportedLanguages
1017 where ok (PrefixPred _ _) = False
1019 flags = [ name | (name, _, _) <- fFlags ]
1021 dynamic_flags :: [Flag DynP]
1023 Flag "n" (NoArg (setDynFlag Opt_DryRun)) Supported
1024 , Flag "cpp" (NoArg (setDynFlag Opt_Cpp)) Supported
1025 , Flag "F" (NoArg (setDynFlag Opt_Pp)) Supported
1026 , Flag "#include" (HasArg (addCmdlineHCInclude)) Supported
1027 , Flag "v" (OptIntSuffix setVerbosity) Supported
1029 ------- Specific phases --------------------------------------------
1030 , Flag "pgmL" (HasArg (upd . setPgmL)) Supported
1031 , Flag "pgmP" (HasArg (upd . setPgmP)) Supported
1032 , Flag "pgmF" (HasArg (upd . setPgmF)) Supported
1033 , Flag "pgmc" (HasArg (upd . setPgmc)) Supported
1034 , Flag "pgmm" (HasArg (upd . setPgmm)) Supported
1035 , Flag "pgms" (HasArg (upd . setPgms)) Supported
1036 , Flag "pgma" (HasArg (upd . setPgma)) Supported
1037 , Flag "pgml" (HasArg (upd . setPgml)) Supported
1038 , Flag "pgmdll" (HasArg (upd . setPgmdll)) Supported
1039 , Flag "pgmwindres" (HasArg (upd . setPgmwindres)) Supported
1041 , Flag "optL" (HasArg (upd . addOptL)) Supported
1042 , Flag "optP" (HasArg (upd . addOptP)) Supported
1043 , Flag "optF" (HasArg (upd . addOptF)) Supported
1044 , Flag "optc" (HasArg (upd . addOptc)) Supported
1045 , Flag "optm" (HasArg (upd . addOptm)) Supported
1046 , Flag "opta" (HasArg (upd . addOpta)) Supported
1047 , Flag "optl" (HasArg (upd . addOptl)) Supported
1048 , Flag "optdep" (HasArg (upd . addOptdep)) Supported
1049 , Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
1052 (NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
1055 -------- Linking ----------------------------------------------------
1056 , Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1058 , Flag "no-link" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1059 (Deprecated "Use -c instead")
1060 , Flag "shared" (NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
1062 , Flag "dynload" (HasArg (upd . parseDynLibLoaderMode))
1065 ------- Libraries ---------------------------------------------------
1066 , Flag "L" (Prefix addLibraryPath ) Supported
1067 , Flag "l" (AnySuffix (\s -> do upd (addOptl s))) Supported
1069 ------- Frameworks --------------------------------------------------
1070 -- -framework-path should really be -F ...
1071 , Flag "framework-path" (HasArg addFrameworkPath ) Supported
1072 , Flag "framework" (HasArg (upd . addCmdlineFramework)) Supported
1074 ------- Output Redirection ------------------------------------------
1075 , Flag "odir" (HasArg (upd . setObjectDir)) Supported
1076 , Flag "o" (SepArg (upd . setOutputFile . Just)) Supported
1077 , Flag "ohi" (HasArg (upd . setOutputHi . Just )) Supported
1078 , Flag "osuf" (HasArg (upd . setObjectSuf)) Supported
1079 , Flag "hcsuf" (HasArg (upd . setHcSuf)) Supported
1080 , Flag "hisuf" (HasArg (upd . setHiSuf)) Supported
1081 , Flag "hidir" (HasArg (upd . setHiDir)) Supported
1082 , Flag "tmpdir" (HasArg (upd . setTmpDir)) Supported
1083 , Flag "stubdir" (HasArg (upd . setStubDir)) Supported
1084 , Flag "ddump-file-prefix" (HasArg (upd . setDumpPrefixForce . Just))
1087 ------- Keeping temporary files -------------------------------------
1088 -- These can be singular (think ghc -c) or plural (think ghc --make)
1089 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1090 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1091 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1092 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1093 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1094 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1095 -- This only makes sense as plural
1096 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles)) Supported
1098 ------- Miscellaneous ----------------------------------------------
1099 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain)) Supported
1100 , Flag "main-is" (SepArg setMainIs ) Supported
1101 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock)) Supported
1102 , Flag "haddock-opts" (HasArg (upd . addHaddockOpts)) Supported
1103 , Flag "hpcdir" (SepArg setOptHpcDir) Supported
1105 ------- recompilation checker --------------------------------------
1106 , Flag "recomp" (NoArg (unSetDynFlag Opt_ForceRecomp))
1107 (Deprecated "Use -fno-force-recomp instead")
1108 , Flag "no-recomp" (NoArg (setDynFlag Opt_ForceRecomp))
1109 (Deprecated "Use -fforce-recomp instead")
1111 ------- Packages ----------------------------------------------------
1112 , Flag "package-conf" (HasArg extraPkgConf_) Supported
1113 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1115 , Flag "package-name" (HasArg (upd . setPackageName)) Supported
1116 , Flag "package" (HasArg exposePackage) Supported
1117 , Flag "hide-package" (HasArg hidePackage) Supported
1118 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1120 , Flag "ignore-package" (HasArg ignorePackage)
1122 , Flag "syslib" (HasArg exposePackage)
1123 (Deprecated "Use -package instead")
1125 ------ HsCpp opts ---------------------------------------------------
1126 , Flag "D" (AnySuffix (upd . addOptP)) Supported
1127 , Flag "U" (AnySuffix (upd . addOptP)) Supported
1129 ------- Include/Import Paths ----------------------------------------
1130 , Flag "I" (Prefix addIncludePath) Supported
1131 , Flag "i" (OptPrefix addImportPath ) Supported
1133 ------ Debugging ----------------------------------------------------
1134 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats)) Supported
1136 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1138 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1140 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1142 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1144 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1146 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1148 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1150 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1152 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1154 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1156 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1158 , Flag "ddump-asm-regalloc-stages"
1159 (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1161 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1163 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1165 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1167 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1169 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1171 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1173 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1175 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1177 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1179 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1181 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1183 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1185 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1187 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1189 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1191 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1193 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1195 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1197 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1199 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1201 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1203 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1205 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1207 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1209 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1211 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1213 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1215 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1217 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1219 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1221 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1223 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1225 , Flag "dverbose-core2core" (NoArg setVerboseCore2Core)
1227 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1229 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1231 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1233 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1235 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1237 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1239 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1241 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1243 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1246 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1248 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1250 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1252 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1254 , Flag "dshow-passes"
1255 (NoArg (do setDynFlag Opt_ForceRecomp
1256 setVerbosity (Just 2)))
1258 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1261 ------ Machine dependant (-m<blah>) stuff ---------------------------
1263 , Flag "monly-2-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 2}) ))
1265 , Flag "monly-3-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 3}) ))
1267 , Flag "monly-4-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 4}) ))
1270 ------ Warning opts -------------------------------------------------
1271 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1273 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1275 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1277 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1279 , Flag "Wnot" (NoArg (mapM_ unSetDynFlag minusWallOpts))
1280 (Deprecated "Use -w instead")
1281 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1284 ------ Optimisation flags ------------------------------------------
1285 , Flag "O" (NoArg (upd (setOptLevel 1))) Supported
1286 , Flag "Onot" (NoArg (upd (setOptLevel 0)))
1287 (Deprecated "Use -O0 instead")
1288 , Flag "Odph" (NoArg (upd setDPHOpt)) Supported
1289 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1291 -- If the number is missing, use 1
1293 , Flag "fsimplifier-phases"
1294 (IntSuffix (\n -> upd (\dfs -> dfs{ simplPhases = n })))
1296 , Flag "fmax-simplifier-iterations"
1297 (IntSuffix (\n -> upd (\dfs -> dfs{ maxSimplIterations = n })))
1300 , Flag "fspec-constr-threshold"
1301 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrThreshold = Just n })))
1303 , Flag "fno-spec-constr-threshold"
1304 (NoArg (upd (\dfs -> dfs{ specConstrThreshold = Nothing })))
1306 , Flag "fspec-constr-count"
1307 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrCount = Just n })))
1309 , Flag "fno-spec-constr-count"
1310 (NoArg (upd (\dfs -> dfs{ specConstrCount = Nothing })))
1312 , Flag "fliberate-case-threshold"
1313 (IntSuffix (\n -> upd (\dfs -> dfs{ liberateCaseThreshold = Just n })))
1315 , Flag "fno-liberate-case-threshold"
1316 (NoArg (upd (\dfs -> dfs{ liberateCaseThreshold = Nothing })))
1319 , Flag "frule-check"
1320 (SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s })))
1322 , Flag "fcontext-stack"
1323 (IntSuffix $ \n -> upd $ \dfs -> dfs{ ctxtStkDepth = n })
1326 ------ Compiler flags -----------------------------------------------
1328 , Flag "fasm" (NoArg (setObjTarget HscAsm)) Supported
1329 , Flag "fvia-c" (NoArg (setObjTarget HscC)) Supported
1330 , Flag "fvia-C" (NoArg (setObjTarget HscC)) Supported
1332 , Flag "fno-code" (NoArg (setTarget HscNothing)) Supported
1333 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted)) Supported
1334 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget)) Supported
1336 , Flag "fglasgow-exts" (NoArg (mapM_ setDynFlag glasgowExtsFlags))
1338 , Flag "fno-glasgow-exts" (NoArg (mapM_ unSetDynFlag glasgowExtsFlags))
1341 ++ map (mkFlag True "f" setDynFlag ) fFlags
1342 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1343 ++ map (mkFlag True "X" setDynFlag ) xFlags
1344 ++ map (mkFlag False "XNo" unSetDynFlag) xFlags
1346 mkFlag :: Bool -- True => turn it on, False => turn it off
1348 -> (DynFlag -> DynP ())
1349 -> (String, DynFlag, Bool -> Deprecated)
1351 mkFlag turnOn flagPrefix f (name, dynflag, deprecated)
1352 = Flag (flagPrefix ++ name) (NoArg (f dynflag)) (deprecated turnOn)
1354 deprecatedForLanguage :: String -> Bool -> Deprecated
1355 deprecatedForLanguage lang turnOn =
1356 Deprecated ("Use the " ++ prefix ++ lang ++ " language instead")
1357 where prefix = if turnOn then "" else "No"
1359 -- these -f<blah> flags can all be reversed with -fno-<blah>
1361 fFlags :: [(String, DynFlag, Bool -> Deprecated)]
1363 ( "warn-dodgy-imports", Opt_WarnDodgyImports, const Supported ),
1364 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, const Supported ),
1365 ( "warn-hi-shadowing", Opt_WarnHiShadows, const Supported ),
1366 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, const Supported ),
1367 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, const Supported ),
1368 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, const Supported ),
1369 ( "warn-missing-fields", Opt_WarnMissingFields, const Supported ),
1370 ( "warn-missing-methods", Opt_WarnMissingMethods, const Supported ),
1371 ( "warn-missing-signatures", Opt_WarnMissingSigs, const Supported ),
1372 ( "warn-name-shadowing", Opt_WarnNameShadowing, const Supported ),
1373 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, const Supported ),
1374 ( "warn-simple-patterns", Opt_WarnSimplePatterns, const Supported ),
1375 ( "warn-type-defaults", Opt_WarnTypeDefaults, const Supported ),
1376 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, const Supported ),
1377 ( "warn-unused-binds", Opt_WarnUnusedBinds, const Supported ),
1378 ( "warn-unused-imports", Opt_WarnUnusedImports, const Supported ),
1379 ( "warn-unused-matches", Opt_WarnUnusedMatches, const Supported ),
1380 ( "warn-deprecations", Opt_WarnDeprecations, const Supported ),
1381 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, const Supported ),
1382 ( "warn-orphans", Opt_WarnOrphans, const Supported ),
1383 ( "warn-tabs", Opt_WarnTabs, const Supported ),
1384 ( "print-explicit-foralls", Opt_PrintExplicitForalls, const Supported ),
1385 ( "strictness", Opt_Strictness, const Supported ),
1386 ( "static-argument-transformation", Opt_StaticArgumentTransformation, const Supported ),
1387 ( "full-laziness", Opt_FullLaziness, const Supported ),
1388 ( "liberate-case", Opt_LiberateCase, const Supported ),
1389 ( "spec-constr", Opt_SpecConstr, const Supported ),
1390 ( "cse", Opt_CSE, const Supported ),
1391 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, const Supported ),
1392 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, const Supported ),
1393 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, const Supported ),
1394 ( "ignore-asserts", Opt_IgnoreAsserts, const Supported ),
1395 ( "do-eta-reduction", Opt_DoEtaReduction, const Supported ),
1396 ( "case-merge", Opt_CaseMerge, const Supported ),
1397 ( "unbox-strict-fields", Opt_UnboxStrictFields, const Supported ),
1398 ( "method-sharing", Opt_MethodSharing, const Supported ),
1399 ( "dicts-cheap", Opt_DictsCheap, const Supported ),
1400 ( "excess-precision", Opt_ExcessPrecision, const Supported ),
1401 ( "asm-mangling", Opt_DoAsmMangling, const Supported ),
1402 ( "print-bind-result", Opt_PrintBindResult, const Supported ),
1403 ( "force-recomp", Opt_ForceRecomp, const Supported ),
1404 ( "hpc-no-auto", Opt_Hpc_No_Auto, const Supported ),
1405 ( "rewrite-rules", Opt_RewriteRules, const Supported ),
1406 ( "break-on-exception", Opt_BreakOnException, const Supported ),
1407 ( "break-on-error", Opt_BreakOnError, const Supported ),
1408 ( "print-evld-with-show", Opt_PrintEvldWithShow, const Supported ),
1409 ( "print-bind-contents", Opt_PrintBindContents, const Supported ),
1410 ( "run-cps", Opt_RunCPSZ, const Supported ),
1411 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, const Supported ),
1412 ( "vectorise", Opt_Vectorise, const Supported ),
1413 ( "regs-graph", Opt_RegsGraph, const Supported ),
1414 ( "regs-iterative", Opt_RegsIterative, const Supported ),
1415 ( "th", Opt_TemplateHaskell,
1416 deprecatedForLanguage "TemplateHaskell" ),
1417 ( "fi", Opt_ForeignFunctionInterface,
1418 deprecatedForLanguage "ForeignFunctionInterface" ),
1419 ( "ffi", Opt_ForeignFunctionInterface,
1420 deprecatedForLanguage "ForeignFunctionInterface" ),
1421 ( "arrows", Opt_Arrows,
1422 deprecatedForLanguage "Arrows" ),
1423 ( "generics", Opt_Generics,
1424 deprecatedForLanguage "Generics" ),
1425 ( "implicit-prelude", Opt_ImplicitPrelude,
1426 deprecatedForLanguage "ImplicitPrelude" ),
1427 ( "bang-patterns", Opt_BangPatterns,
1428 deprecatedForLanguage "BangPatterns" ),
1429 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1430 deprecatedForLanguage "MonomorphismRestriction" ),
1431 ( "mono-pat-binds", Opt_MonoPatBinds,
1432 deprecatedForLanguage "MonoPatBinds" ),
1433 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1434 deprecatedForLanguage "ExtendedDefaultRules" ),
1435 ( "implicit-params", Opt_ImplicitParams,
1436 deprecatedForLanguage "ImplicitParams" ),
1437 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1438 deprecatedForLanguage "ScopedTypeVariables" ),
1440 deprecatedForLanguage "PArr" ),
1441 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1442 deprecatedForLanguage "OverlappingInstances" ),
1443 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1444 deprecatedForLanguage "UndecidableInstances" ),
1445 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1446 deprecatedForLanguage "IncoherentInstances" ),
1447 ( "gen-manifest", Opt_GenManifest, const Supported ),
1448 ( "embed-manifest", Opt_EmbedManifest, const Supported )
1451 supportedLanguages :: [String]
1452 supportedLanguages = [ name | (name, _, _) <- xFlags ]
1454 -- This may contain duplicates
1455 languageOptions :: [DynFlag]
1456 languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
1458 -- These -X<blah> flags can all be reversed with -XNo<blah>
1459 xFlags :: [(String, DynFlag, Bool -> Deprecated)]
1461 ( "CPP", Opt_Cpp, const Supported ),
1462 ( "PatternGuards", Opt_PatternGuards, const Supported ),
1463 ( "UnicodeSyntax", Opt_UnicodeSyntax, const Supported ),
1464 ( "MagicHash", Opt_MagicHash, const Supported ),
1465 ( "PolymorphicComponents", Opt_PolymorphicComponents, const Supported ),
1466 ( "ExistentialQuantification", Opt_ExistentialQuantification, const Supported ),
1467 ( "KindSignatures", Opt_KindSignatures, const Supported ),
1468 ( "PatternSignatures", Opt_PatternSignatures, const Supported ),
1469 ( "EmptyDataDecls", Opt_EmptyDataDecls, const Supported ),
1470 ( "ParallelListComp", Opt_ParallelListComp, const Supported ),
1471 ( "TransformListComp", Opt_TransformListComp, const Supported ),
1472 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, const Supported ),
1473 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, const Supported ),
1474 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, const Supported ),
1475 ( "Rank2Types", Opt_Rank2Types, const Supported ),
1476 ( "RankNTypes", Opt_RankNTypes, const Supported ),
1477 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, const Supported ),
1478 ( "TypeOperators", Opt_TypeOperators, const Supported ),
1479 ( "RecursiveDo", Opt_RecursiveDo, const Supported ),
1480 ( "Arrows", Opt_Arrows, const Supported ),
1481 ( "PArr", Opt_PArr, const Supported ),
1482 ( "TemplateHaskell", Opt_TemplateHaskell, const Supported ),
1483 ( "QuasiQuotes", Opt_QuasiQuotes, const Supported ),
1484 ( "Generics", Opt_Generics, const Supported ),
1486 ( "ImplicitPrelude", Opt_ImplicitPrelude, const Supported ),
1487 ( "RecordWildCards", Opt_RecordWildCards, const Supported ),
1488 ( "NamedFieldPuns", Opt_RecordPuns, const Supported ),
1489 ( "RecordPuns", Opt_RecordPuns,
1490 deprecatedForLanguage "NamedFieldPuns" ),
1491 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, const Supported ),
1492 ( "OverloadedStrings", Opt_OverloadedStrings, const Supported ),
1493 ( "GADTs", Opt_GADTs, const Supported ),
1494 ( "ViewPatterns", Opt_ViewPatterns, const Supported ),
1495 ( "TypeFamilies", Opt_TypeFamilies, const Supported ),
1496 ( "BangPatterns", Opt_BangPatterns, const Supported ),
1498 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, const Supported ),
1499 -- On by default (which is not strictly H98):
1500 ( "MonoPatBinds", Opt_MonoPatBinds, const Supported ),
1501 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, const Supported ),
1502 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, const Supported ),
1503 ( "ImplicitParams", Opt_ImplicitParams, const Supported ),
1504 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, const Supported ),
1505 ( "UnboxedTuples", Opt_UnboxedTuples, const Supported ),
1506 ( "StandaloneDeriving", Opt_StandaloneDeriving, const Supported ),
1507 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, const Supported ),
1508 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, const Supported ),
1509 ( "FlexibleContexts", Opt_FlexibleContexts, const Supported ),
1510 ( "FlexibleInstances", Opt_FlexibleInstances, const Supported ),
1511 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, const Supported ),
1512 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, const Supported ),
1513 ( "FunctionalDependencies", Opt_FunctionalDependencies, const Supported ),
1514 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, const Supported ),
1515 ( "OverlappingInstances", Opt_OverlappingInstances, const Supported ),
1516 ( "UndecidableInstances", Opt_UndecidableInstances, const Supported ),
1517 ( "IncoherentInstances", Opt_IncoherentInstances, const Supported )
1520 impliedFlags :: [(DynFlag, [DynFlag])]
1522 ( Opt_GADTs, [Opt_RelaxedPolyRec] ) -- We want type-sig variables to
1523 -- be completely rigid for GADTs
1524 , ( Opt_ScopedTypeVariables, [Opt_RelaxedPolyRec] ) -- Ditto for scoped type variables; see
1525 -- Note [Scoped tyvars] in TcBinds
1528 glasgowExtsFlags :: [DynFlag]
1529 glasgowExtsFlags = [
1530 Opt_PrintExplicitForalls
1531 , Opt_ForeignFunctionInterface
1532 , Opt_UnliftedFFITypes
1534 , Opt_ImplicitParams
1535 , Opt_ScopedTypeVariables
1537 , Opt_TypeSynonymInstances
1538 , Opt_StandaloneDeriving
1539 , Opt_DeriveDataTypeable
1540 , Opt_FlexibleContexts
1541 , Opt_FlexibleInstances
1542 , Opt_ConstrainedClassMethods
1543 , Opt_MultiParamTypeClasses
1544 , Opt_FunctionalDependencies
1546 , Opt_PolymorphicComponents
1547 , Opt_ExistentialQuantification
1550 , Opt_LiberalTypeSynonyms
1552 , Opt_ImpredicativeTypes
1555 , Opt_ParallelListComp
1556 , Opt_EmptyDataDecls
1557 , Opt_KindSignatures
1558 , Opt_PatternSignatures
1559 , Opt_GeneralizedNewtypeDeriving
1560 , Opt_TypeFamilies ]
1562 -- -----------------------------------------------------------------------------
1563 -- Parsing the dynamic flags.
1565 parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags, [String], [String])
1566 parseDynamicFlags dflags args = do
1567 let ((leftover, errs, warns), dflags')
1568 = runCmdLine (processArgs dynamic_flags args) dflags
1569 when (not (null errs)) $ do
1570 throwDyn (UsageError (unlines errs))
1571 return (dflags', leftover, warns)
1573 type DynP = CmdLineP DynFlags
1575 upd :: (DynFlags -> DynFlags) -> DynP ()
1577 dfs <- getCmdLineState
1578 putCmdLineState $! (f dfs)
1580 --------------------------
1581 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1582 setDynFlag f = upd (\dfs -> foldl dopt_set (dopt_set dfs f) deps)
1584 deps = [ d | (f', ds) <- impliedFlags, f' == f, d <- ds ]
1585 -- When you set f, set the ones it implies
1586 -- When you un-set f, however, we don't un-set the things it implies
1587 -- (except for -fno-glasgow-exts, which is treated specially)
1589 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1591 --------------------------
1592 setDumpFlag :: DynFlag -> OptKind DynP
1593 setDumpFlag dump_flag
1594 | force_recomp = NoArg (setDynFlag Opt_ForceRecomp >> setDynFlag dump_flag)
1595 | otherwise = NoArg (setDynFlag dump_flag)
1597 -- Whenver we -ddump, switch off the recompilation checker,
1598 -- else you don't see the dump!
1599 -- However, certain dumpy-things are really interested in what's going
1600 -- on during recompilation checking, so in those cases we
1601 -- don't want to turn it off.
1602 force_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1603 Opt_D_dump_hi_diffs]
1605 setVerboseCore2Core :: DynP ()
1606 setVerboseCore2Core = do setDynFlag Opt_ForceRecomp
1607 setDynFlag Opt_D_verbose_core2core
1608 upd (\s -> s { shouldDumpSimplPhase = const True })
1610 setDumpSimplPhases :: String -> DynP ()
1611 setDumpSimplPhases s = do setDynFlag Opt_ForceRecomp
1612 upd (\s -> s { shouldDumpSimplPhase = spec })
1614 spec :: SimplifierMode -> Bool
1616 . map (join (&&) . map match . split ':')
1622 join :: (Bool -> Bool -> Bool)
1623 -> [SimplifierMode -> Bool]
1624 -> SimplifierMode -> Bool
1625 join _ [] = const True
1626 join op ss = foldr1 (\f g x -> f x `op` g x) ss
1628 match :: String -> SimplifierMode -> Bool
1629 match "" = const True
1630 match s = case reads s of
1631 [(n,"")] -> phase_num n
1634 phase_num :: Int -> SimplifierMode -> Bool
1635 phase_num n (SimplPhase k _) = n == k
1636 phase_num _ _ = False
1638 phase_name :: String -> SimplifierMode -> Bool
1639 phase_name s SimplGently = s == "gentle"
1640 phase_name s (SimplPhase _ ss) = s `elem` ss
1642 setVerbosity :: Maybe Int -> DynP ()
1643 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1645 addCmdlineHCInclude :: String -> DynP ()
1646 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1648 extraPkgConf_ :: FilePath -> DynP ()
1649 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1651 exposePackage, hidePackage, ignorePackage :: String -> DynP ()
1653 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1655 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1657 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1659 setPackageName :: String -> DynFlags -> DynFlags
1661 | Nothing <- unpackPackageId pid
1662 = throwDyn (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
1664 = \s -> s{ thisPackage = pid }
1666 pid = stringToPackageId p
1668 -- If we're linking a binary, then only targets that produce object
1669 -- code are allowed (requests for other target types are ignored).
1670 setTarget :: HscTarget -> DynP ()
1671 setTarget l = upd set
1674 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1677 -- Changes the target only if we're compiling object code. This is
1678 -- used by -fasm and -fvia-C, which switch from one to the other, but
1679 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1680 -- can be safely used in an OPTIONS_GHC pragma.
1681 setObjTarget :: HscTarget -> DynP ()
1682 setObjTarget l = upd set
1685 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1688 setOptLevel :: Int -> DynFlags -> DynFlags
1689 setOptLevel n dflags
1690 | hscTarget dflags == HscInterpreted && n > 0
1692 -- not in IO any more, oh well:
1693 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1695 = updOptLevel n dflags
1698 -- -Odph is equivalent to
1700 -- -O2 optimise as much as possible
1701 -- -fno-method-sharing sharing specialisation defeats fusion
1703 -- -fdicts-cheap always inline dictionaries
1704 -- -fmax-simplifier-iterations20 this is necessary sometimes
1705 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1707 setDPHOpt :: DynFlags -> DynFlags
1708 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1709 , specConstrThreshold = Nothing
1711 `dopt_set` Opt_DictsCheap
1712 `dopt_unset` Opt_MethodSharing
1716 setMainIs :: String -> DynP ()
1718 | not (null main_fn) && isLower (head main_fn)
1719 -- The arg looked like "Foo.Bar.baz"
1720 = upd $ \d -> d{ mainFunIs = Just main_fn,
1721 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
1723 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
1724 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
1726 | otherwise -- The arg looked like "baz"
1727 = upd $ \d -> d{ mainFunIs = Just arg }
1729 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
1731 -----------------------------------------------------------------------------
1732 -- Paths & Libraries
1734 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
1736 -- -i on its own deletes the import paths
1737 addImportPath "" = upd (\s -> s{importPaths = []})
1738 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
1742 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
1745 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
1747 addFrameworkPath p =
1748 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
1750 #ifndef mingw32_TARGET_OS
1751 split_marker :: Char
1752 split_marker = ':' -- not configurable (ToDo)
1755 splitPathList :: String -> [String]
1756 splitPathList s = filter notNull (splitUp s)
1757 -- empty paths are ignored: there might be a trailing
1758 -- ':' in the initial list, for example. Empty paths can
1759 -- cause confusion when they are translated into -I options
1760 -- for passing to gcc.
1762 #ifndef mingw32_TARGET_OS
1763 splitUp xs = split split_marker xs
1765 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
1767 -- That is, if "foo:bar:baz" is used, this interpreted as
1768 -- consisting of three entries, 'foo', 'bar', 'baz'.
1769 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
1770 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
1772 -- Notice that no attempt is made to fully replace the 'standard'
1773 -- split marker ':' with the Windows / DOS one, ';'. The reason being
1774 -- that this will cause too much breakage for users & ':' will
1775 -- work fine even with DOS paths, if you're not insisting on being silly.
1778 splitUp (x:':':div:xs) | div `elem` dir_markers
1779 = ((x:':':div:p): splitUp rs)
1781 (p,rs) = findNextPath xs
1782 -- we used to check for existence of the path here, but that
1783 -- required the IO monad to be threaded through the command-line
1784 -- parser which is quite inconvenient. The
1785 splitUp xs = cons p (splitUp rs)
1787 (p,rs) = findNextPath xs
1792 -- will be called either when we've consumed nought or the
1793 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
1794 -- finding the next split marker.
1796 case break (`elem` split_markers) xs of
1797 (p, _:ds) -> (p, ds)
1800 split_markers :: [Char]
1801 split_markers = [':', ';']
1803 dir_markers :: [Char]
1804 dir_markers = ['/', '\\']
1807 -- -----------------------------------------------------------------------------
1808 -- tmpDir, where we store temporary files.
1810 setTmpDir :: FilePath -> DynFlags -> DynFlags
1811 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
1812 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
1813 -- seem necessary now --SDM 7/2/2008
1815 -----------------------------------------------------------------------------
1818 setOptHpcDir :: String -> DynP ()
1819 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
1821 -----------------------------------------------------------------------------
1822 -- Via-C compilation stuff
1824 -- There are some options that we need to pass to gcc when compiling
1825 -- Haskell code via C, but are only supported by recent versions of
1826 -- gcc. The configure script decides which of these options we need,
1827 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
1828 -- read before each via-C compilation. The advantage of having these
1829 -- in a separate file is that the file can be created at install-time
1830 -- depending on the available gcc version, and even re-generated later
1831 -- if gcc is upgraded.
1833 -- The options below are not dependent on the version of gcc, only the
1836 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
1837 [String]) -- for registerised HC compilations
1838 machdepCCOpts _dflags
1839 #if alpha_TARGET_ARCH
1841 #ifdef HAVE_THREADED_RTS_SUPPORT
1845 -- For now, to suppress the gcc warning "call-clobbered
1846 -- register used for global register variable", we simply
1847 -- disable all warnings altogether using the -w flag. Oh well.
1849 #elif hppa_TARGET_ARCH
1850 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1851 -- (very nice, but too bad the HP /usr/include files don't agree.)
1852 = ( ["-D_HPUX_SOURCE"], [] )
1854 #elif m68k_TARGET_ARCH
1855 -- -fno-defer-pop : for the .hc files, we want all the pushing/
1856 -- popping of args to routines to be explicit; if we let things
1857 -- be deferred 'til after an STGJUMP, imminent death is certain!
1859 -- -fomit-frame-pointer : *don't*
1860 -- It's better to have a6 completely tied up being a frame pointer
1861 -- rather than let GCC pick random things to do with it.
1862 -- (If we want to steal a6, then we would try to do things
1863 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
1864 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
1866 #elif i386_TARGET_ARCH
1867 -- -fno-defer-pop : basically the same game as for m68k
1869 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
1870 -- the fp (%ebp) for our register maps.
1871 = let n_regs = stolen_x86_regs _dflags
1874 ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
1875 -- , if "mingw32" `isSuffixOf` cTARGETPLATFORM then "-mno-cygwin" else ""
1878 "-fomit-frame-pointer",
1879 -- we want -fno-builtin, because when gcc inlines
1880 -- built-in functions like memcpy() it tends to
1881 -- run out of registers, requiring -monly-n-regs
1883 "-DSTOLEN_X86_REGS="++show n_regs ]
1886 #elif ia64_TARGET_ARCH
1887 = ( [], ["-fomit-frame-pointer", "-G0"] )
1889 #elif x86_64_TARGET_ARCH
1890 = ( [], ["-fomit-frame-pointer",
1891 "-fno-asynchronous-unwind-tables",
1892 -- the unwind tables are unnecessary for HC code,
1893 -- and get in the way of -split-objs. Another option
1894 -- would be to throw them away in the mangler, but this
1897 -- calling builtins like strlen() using the FFI can
1898 -- cause gcc to run out of regs, so use the external
1902 #elif sparc_TARGET_ARCH
1904 -- For now, to suppress the gcc warning "call-clobbered
1905 -- register used for global register variable", we simply
1906 -- disable all warnings altogether using the -w flag. Oh well.
1908 #elif powerpc_apple_darwin_TARGET
1910 -- Disable Apple's precompiling preprocessor. It's a great thing
1911 -- for "normal" programs, but it doesn't support register variable
1913 = ( [], ["-no-cpp-precomp"] )
1918 picCCOpts :: DynFlags -> [String]
1920 #if darwin_TARGET_OS
1921 -- Apple prefers to do things the other way round.
1922 -- PIC is on by default.
1923 -- -mdynamic-no-pic:
1924 -- Turn off PIC code generation.
1926 -- Don't generate "common" symbols - these are unwanted
1927 -- in dynamic libraries.
1930 = ["-fno-common", "-D__PIC__"]
1932 = ["-mdynamic-no-pic"]
1933 #elif mingw32_TARGET_OS
1934 -- no -fPIC for Windows
1941 = ["-fPIC", "-D__PIC__"]
1946 -- -----------------------------------------------------------------------------
1950 can_split = cSplitObjs == "YES"
1952 -- -----------------------------------------------------------------------------
1955 compilerInfo :: [(String, String)]
1956 compilerInfo = [("Project name", cProjectName),
1957 ("Project version", cProjectVersion),
1958 ("Booter version", cBooterVersion),
1960 ("Interface file version", cHscIfaceFileVersion),
1961 ("Have interpreter", cGhcWithInterpreter),
1962 ("Object splitting", cSplitObjs),
1963 ("Have native code generator", cGhcWithNativeCodeGen),
1964 ("Support SMP", cGhcWithSMP),
1965 ("Unregisterised", cGhcUnregisterised),
1966 ("Tables next to code", cGhcEnableTablesNextToCode),
1967 ("Win32 DLLs", cEnableWin32DLLs),
1968 ("RTS ways", cGhcRTSWays),
1969 ("Leading underscore", cLeadingUnderscore),
1970 ("Debug on", show debugIsOn)