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,
28 -- Configuration of the core-to-core and stg-to-stg phases
32 SimplifierMode(..), FloatOutSwitches(..),
33 getCoreToDo, getStgToDo,
35 -- Manipulating DynFlags
36 defaultDynFlags, -- DynFlags
37 initDynFlags, -- DynFlags -> IO DynFlags
39 dopt, -- DynFlag -> DynFlags -> Bool
40 dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags
41 getOpts, -- (DynFlags -> [a]) -> IO [a]
52 machdepCCOpts, picCCOpts,
53 supportedLanguages, languageOptions,
57 #include "HsVersions.h"
61 import PrelNames ( mAIN )
62 #ifdef i386_TARGET_ARCH
63 import StaticFlags ( opt_Static )
65 import StaticFlags ( opt_PIC, WayName(..), v_Ways, v_Build_tag,
67 import {-# SOURCE #-} Packages (PackageState)
68 import DriverPhases ( Phase(..), phaseInputExt )
71 import Constants ( mAX_CONTEXT_REDUCTION_DEPTH )
72 import Panic ( panic, GhcException(..) )
73 import UniqFM ( UniqFM )
75 import Maybes ( orElse )
76 import SrcLoc ( SrcSpan )
78 import {-# SOURCE #-} ErrUtils ( Severity(..), Message, mkLocMessage )
80 import Data.IORef ( readIORef )
81 import Control.Exception ( throwDyn )
82 import Control.Monad ( when )
85 import System.FilePath
86 import System.IO ( stderr, hPutChar )
88 -- -----------------------------------------------------------------------------
96 | Opt_D_dump_cmmz_pretty
100 | Opt_D_dump_asm_native
101 | Opt_D_dump_asm_liveness
102 | Opt_D_dump_asm_coalesce
103 | Opt_D_dump_asm_regalloc
104 | Opt_D_dump_asm_regalloc_stages
105 | Opt_D_dump_asm_conflicts
106 | Opt_D_dump_asm_stats
112 | Opt_D_dump_inlinings
113 | Opt_D_dump_rule_firings
114 | Opt_D_dump_occur_anal
118 | Opt_D_dump_simpl_iterations
119 | Opt_D_dump_simpl_phases
128 | Opt_D_dump_worker_wrapper
129 | Opt_D_dump_rn_trace
130 | Opt_D_dump_rn_stats
132 | Opt_D_dump_simpl_stats
133 | Opt_D_dump_tc_trace
134 | Opt_D_dump_if_trace
140 | Opt_D_verbose_core2core
141 | Opt_D_verbose_stg2stg
143 | Opt_D_dump_hi_diffs
144 | Opt_D_dump_minimal_imports
145 | Opt_D_dump_mod_cycles
146 | Opt_D_dump_view_pattern_commoning
147 | Opt_D_faststring_stats
148 | Opt_DumpToFile -- ^ Append dump output to files instead of stdout.
149 | Opt_D_no_debug_output
155 | Opt_WarnIsError -- -Werror; makes warnings fatal
156 | Opt_WarnDuplicateExports
158 | Opt_WarnImplicitPrelude
159 | Opt_WarnIncompletePatterns
160 | Opt_WarnIncompletePatternsRecUpd
161 | Opt_WarnMissingFields
162 | Opt_WarnMissingMethods
163 | Opt_WarnMissingSigs
164 | Opt_WarnNameShadowing
165 | Opt_WarnOverlappingPatterns
166 | Opt_WarnSimplePatterns
167 | Opt_WarnTypeDefaults
168 | Opt_WarnMonomorphism
169 | Opt_WarnUnusedBinds
170 | Opt_WarnUnusedImports
171 | Opt_WarnUnusedMatches
172 | Opt_WarnDeprecations
173 | Opt_WarnDeprecatedFlags
174 | Opt_WarnDodgyImports
177 | Opt_WarnDodgyForeignImports
180 | Opt_OverlappingInstances
181 | Opt_UndecidableInstances
182 | Opt_IncoherentInstances
183 | Opt_MonomorphismRestriction
185 | Opt_ExtendedDefaultRules -- Use GHC's extended rules for defaulting
186 | Opt_ForeignFunctionInterface
187 | Opt_UnliftedFFITypes
188 | Opt_PArr -- Syntactic support for parallel arrays
189 | Opt_Arrows -- Arrow-notation syntax
190 | Opt_TemplateHaskell
194 | Opt_ImplicitPrelude
195 | Opt_ScopedTypeVariables
199 | Opt_OverloadedStrings
200 | Opt_DisambiguateRecordFields
201 | Opt_RecordWildCards
206 | Opt_StandaloneDeriving
207 | Opt_DeriveDataTypeable
208 | Opt_TypeSynonymInstances
209 | Opt_FlexibleContexts
210 | Opt_FlexibleInstances
211 | Opt_ConstrainedClassMethods
212 | Opt_MultiParamTypeClasses
213 | Opt_FunctionalDependencies
215 | Opt_PolymorphicComponents
216 | Opt_ExistentialQuantification
220 | Opt_PatternSignatures
221 | Opt_ParallelListComp
222 | Opt_TransformListComp
223 | Opt_GeneralizedNewtypeDeriving
225 | Opt_PostfixOperators
227 | Opt_LiberalTypeSynonyms
230 | Opt_ImpredicativeTypes
233 | Opt_PrintExplicitForalls
238 | Opt_StaticArgumentTransformation
242 | Opt_IgnoreInterfacePragmas
243 | Opt_OmitInterfacePragmas
244 | Opt_DoLambdaEtaExpansion
248 | Opt_UnboxStrictFields
253 | Opt_RegsGraph -- do graph coloring register allocation
254 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
262 | Opt_ExcessPrecision
263 | Opt_ReadUserPackageConf
267 | Opt_HideAllPackages
268 | Opt_PrintBindResult
272 | Opt_BreakOnException
274 | Opt_PrintEvldWithShow
275 | Opt_PrintBindContents
279 | Opt_ConvertToZipCfgAndBack
280 | Opt_AutoLinkPackages
291 data DynFlags = DynFlags {
294 coreToDo :: Maybe [CoreToDo], -- reserved for -Ofile
295 stgToDo :: Maybe [StgToDo], -- similarly
296 hscTarget :: HscTarget,
297 hscOutName :: String, -- name of the output file
298 extCoreName :: String, -- name of the .core output file
299 verbosity :: Int, -- verbosity level
300 optLevel :: Int, -- optimisation level
301 simplPhases :: Int, -- number of simplifier phases
302 maxSimplIterations :: Int, -- max simplifier iterations
303 shouldDumpSimplPhase :: SimplifierMode -> Bool,
304 ruleCheck :: Maybe String,
306 specConstrThreshold :: Maybe Int, -- Threshold for SpecConstr
307 specConstrCount :: Maybe Int, -- Max number of specialisations for any one function
308 liberateCaseThreshold :: Maybe Int, -- Threshold for LiberateCase
310 stolen_x86_regs :: Int,
311 cmdlineHcIncludes :: [String], -- -#includes
312 importPaths :: [FilePath],
314 mainFunIs :: Maybe String,
315 ctxtStkDepth :: Int, -- Typechecker context stack depth
317 dphBackend :: DPHBackend,
319 thisPackage :: PackageId,
322 wayNames :: [WayName], -- way flags from the cmd line
323 buildTag :: String, -- the global "way" (eg. "p" for prof)
324 rtsBuildTag :: String, -- the RTS "way"
327 objectDir :: Maybe String,
328 hiDir :: Maybe String,
329 stubDir :: Maybe String,
335 outputFile :: Maybe String,
336 outputHi :: Maybe String,
337 dynLibLoader :: DynLibLoader,
339 -- | This is set by DriverPipeline.runPipeline based on where
340 -- its output is going.
341 dumpPrefix :: Maybe FilePath,
343 -- | Override the dumpPrefix set by runPipeline.
344 -- Set by -ddump-file-prefix
345 dumpPrefixForce :: Maybe FilePath,
347 includePaths :: [String],
348 libraryPaths :: [String],
349 frameworkPaths :: [String], -- used on darwin only
350 cmdlineFrameworks :: [String], -- ditto
351 tmpDir :: String, -- no trailing '/'
353 ghcUsagePath :: FilePath, -- Filled in by SysTools
354 ghciUsagePath :: FilePath, -- ditto
356 hpcDir :: String, -- ^ path to store the .mix files
358 -- options for particular phases
367 opt_windres :: [String],
369 -- commands for particular phases
371 pgm_P :: (String,[Option]),
373 pgm_c :: (String,[Option]),
374 pgm_m :: (String,[Option]),
375 pgm_s :: (String,[Option]),
376 pgm_a :: (String,[Option]),
377 pgm_l :: (String,[Option]),
378 pgm_dll :: (String,[Option]),
380 pgm_sysman :: String,
381 pgm_windres :: String,
384 extraPkgConfs :: [FilePath],
385 topDir :: FilePath, -- filled in by SysTools
386 systemPackageConfig :: FilePath, -- ditto
387 -- The -package-conf flags given on the command line, in the order
390 packageFlags :: [PackageFlag],
391 -- The -package and -hide-package flags from the command-line
394 -- NB. do not modify this field, it is calculated by
395 -- Packages.initPackages and Packages.updatePackages.
396 pkgDatabase :: Maybe (UniqFM PackageConfig),
397 pkgState :: PackageState,
403 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
405 haddockOptions :: Maybe String
416 -- | will this target result in an object file on the disk?
417 isObjectTarget :: HscTarget -> Bool
418 isObjectTarget HscC = True
419 isObjectTarget HscAsm = True
420 isObjectTarget _ = False
422 -- | The 'GhcMode' tells us whether we're doing multi-module
423 -- compilation (controlled via the "GHC" API) or one-shot
424 -- (single-module) compilation. This makes a difference primarily to
425 -- the "Finder": in one-shot mode we look for interface files for
426 -- imported modules, but in multi-module mode we look for source files
427 -- in order to check whether they need to be recompiled.
429 = CompManager -- ^ --make, GHCi, etc.
430 | OneShot -- ^ ghc -c Foo.hs
431 | MkDepend -- ^ ghc -M, see Finder for why we need this
434 isOneShot :: GhcMode -> Bool
435 isOneShot OneShot = True
436 isOneShot _other = False
438 -- | What kind of linking to do.
439 data GhcLink -- What to do in the link step, if there is one
440 = NoLink -- Don't link at all
441 | LinkBinary -- Link object code into a binary
442 | LinkInMemory -- Use the in-memory dynamic linker
443 | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
446 isNoLink :: GhcLink -> Bool
447 isNoLink NoLink = True
451 = ExposePackage String
453 | IgnorePackage String
456 defaultHscTarget :: HscTarget
457 defaultHscTarget = defaultObjectTarget
459 -- | the 'HscTarget' value corresponding to the default way to create
460 -- object files on the current platform.
461 defaultObjectTarget :: HscTarget
463 | cGhcWithNativeCodeGen == "YES" = HscAsm
468 | Wrapped (Maybe String)
472 initDynFlags :: DynFlags -> IO DynFlags
473 initDynFlags dflags = do
474 -- someday these will be dynamic flags
475 ways <- readIORef v_Ways
476 build_tag <- readIORef v_Build_tag
477 rts_build_tag <- readIORef v_RTS_Build_tag
480 buildTag = build_tag,
481 rtsBuildTag = rts_build_tag
484 defaultDynFlags :: DynFlags
487 ghcMode = CompManager,
488 ghcLink = LinkBinary,
491 hscTarget = defaultHscTarget,
497 maxSimplIterations = 4,
498 shouldDumpSimplPhase = const False,
500 specConstrThreshold = Just 200,
501 specConstrCount = Just 3,
502 liberateCaseThreshold = Just 200,
504 cmdlineHcIncludes = [],
508 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
512 thisPackage = mainPackageId,
518 objectSuf = phaseInputExt StopLn,
519 hcSuf = phaseInputExt HCc,
522 outputFile = Nothing,
524 dynLibLoader = Deployable,
525 dumpPrefix = Nothing,
526 dumpPrefixForce = Nothing,
530 cmdlineFrameworks = [],
531 tmpDir = cDEFAULT_TMPDIR,
549 pkgDatabase = Nothing,
550 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
551 wayNames = panic "defaultDynFlags: No wayNames",
552 buildTag = panic "defaultDynFlags: No buildTag",
553 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
554 -- initSysTools fills all these in
555 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
556 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
557 topDir = panic "defaultDynFlags: No topDir",
558 systemPackageConfig = panic "defaultDynFlags: No systemPackageConfig",
559 pgm_L = panic "defaultDynFlags: No pgm_L",
560 pgm_P = panic "defaultDynFlags: No pgm_P",
561 pgm_F = panic "defaultDynFlags: No pgm_F",
562 pgm_c = panic "defaultDynFlags: No pgm_c",
563 pgm_m = panic "defaultDynFlags: No pgm_m",
564 pgm_s = panic "defaultDynFlags: No pgm_s",
565 pgm_a = panic "defaultDynFlags: No pgm_a",
566 pgm_l = panic "defaultDynFlags: No pgm_l",
567 pgm_dll = panic "defaultDynFlags: No pgm_dll",
568 pgm_T = panic "defaultDynFlags: No pgm_T",
569 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
570 pgm_windres = panic "defaultDynFlags: No pgm_windres",
571 -- end of initSysTools values
572 haddockOptions = Nothing,
574 Opt_AutoLinkPackages,
575 Opt_ReadUserPackageConf,
577 Opt_MonoPatBinds, -- Experimentally, I'm making this non-standard
578 -- behaviour the default, to see if anyone notices
582 Opt_MonomorphismRestriction,
590 Opt_PrintBindContents
592 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
593 -- The default -O0 options
596 log_action = \severity srcSpan style msg ->
598 SevInfo -> printErrs (msg style)
599 SevFatal -> printErrs (msg style)
602 printErrs ((mkLocMessage srcSpan msg) style)
603 -- careful (#2302): printErrs prints in UTF-8, whereas
604 -- converting to string first and using hPutStr would
605 -- just emit the low 8 bits of each unicode char.
611 0 | print errors & warnings only
612 1 | minimal verbosity: print "compiling M ... done." for each module.
613 2 | equivalent to -dshow-passes
614 3 | equivalent to existing "ghc -v"
615 4 | "ghc -v -ddump-most"
616 5 | "ghc -v -ddump-all"
619 dopt :: DynFlag -> DynFlags -> Bool
620 dopt f dflags = f `elem` (flags dflags)
622 dopt_set :: DynFlags -> DynFlag -> DynFlags
623 dopt_set dfs f = dfs{ flags = f : flags dfs }
625 dopt_unset :: DynFlags -> DynFlag -> DynFlags
626 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
628 getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
629 getOpts dflags opts = reverse (opts dflags)
630 -- We add to the options from the front, so we need to reverse the list
632 getVerbFlag :: DynFlags -> String
634 | verbosity dflags >= 3 = "-v"
637 setObjectDir, setHiDir, setStubDir, setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
638 setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
639 addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptdep, addOptwindres,
640 addCmdlineFramework, addHaddockOpts
641 :: String -> DynFlags -> DynFlags
642 setOutputFile, setOutputHi, setDumpPrefixForce
643 :: Maybe String -> DynFlags -> DynFlags
645 setObjectDir f d = d{ objectDir = Just f}
646 setHiDir f d = d{ hiDir = Just f}
647 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
648 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
649 -- #included from the .hc file when compiling with -fvia-C.
651 setObjectSuf f d = d{ objectSuf = f}
652 setHiSuf f d = d{ hiSuf = f}
653 setHcSuf f d = d{ hcSuf = f}
655 setOutputFile f d = d{ outputFile = f}
656 setOutputHi f d = d{ outputHi = f}
658 parseDynLibLoaderMode f d =
660 ("deploy", "") -> d{ dynLibLoader = Deployable }
661 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
662 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
663 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
664 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
665 (_,_) -> error "Unknown dynlib loader"
667 setDumpPrefixForce f d = d { dumpPrefixForce = f}
669 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
670 -- Config.hs should really use Option.
671 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
673 setPgmL f d = d{ pgm_L = f}
674 setPgmF f d = d{ pgm_F = f}
675 setPgmc f d = d{ pgm_c = (f,[])}
676 setPgmm f d = d{ pgm_m = (f,[])}
677 setPgms f d = d{ pgm_s = (f,[])}
678 setPgma f d = d{ pgm_a = (f,[])}
679 setPgml f d = d{ pgm_l = (f,[])}
680 setPgmdll f d = d{ pgm_dll = (f,[])}
681 setPgmwindres f d = d{ pgm_windres = f}
683 addOptL f d = d{ opt_L = f : opt_L d}
684 addOptP f d = d{ opt_P = f : opt_P d}
685 addOptF f d = d{ opt_F = f : opt_F d}
686 addOptc f d = d{ opt_c = f : opt_c d}
687 addOptm f d = d{ opt_m = f : opt_m d}
688 addOpta f d = d{ opt_a = f : opt_a d}
689 addOptl f d = d{ opt_l = f : opt_l d}
690 addOptdep f d = d{ opt_dep = f : opt_dep d}
691 addOptwindres f d = d{ opt_windres = f : opt_windres d}
693 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
695 addHaddockOpts f d = d{ haddockOptions = Just f}
697 -- -----------------------------------------------------------------------------
698 -- Command-line options
700 -- When invoking external tools as part of the compilation pipeline, we
701 -- pass these a sequence of options on the command-line. Rather than
702 -- just using a list of Strings, we use a type that allows us to distinguish
703 -- between filepaths and 'other stuff'. [The reason being, of course, that
704 -- this type gives us a handle on transforming filenames, and filenames only,
705 -- to whatever format they're expected to be on a particular platform.]
708 = FileOption -- an entry that _contains_ filename(s) / filepaths.
709 String -- a non-filepath prefix that shouldn't be
710 -- transformed (e.g., "/out=")
711 String -- the filepath/filename portion
714 -----------------------------------------------------------------------------
715 -- Setting the optimisation level
717 updOptLevel :: Int -> DynFlags -> DynFlags
718 -- Set dynflags appropriate to the optimisation level
720 = dfs2{ optLevel = final_n }
722 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
723 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
724 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
726 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
727 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
729 optLevelFlags :: [([Int], DynFlag)]
731 = [ ([0], Opt_IgnoreInterfacePragmas)
732 , ([0], Opt_OmitInterfacePragmas)
734 , ([1,2], Opt_IgnoreAsserts)
735 , ([1,2], Opt_RewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
737 , ([1,2], Opt_DoEtaReduction)
738 , ([1,2], Opt_CaseMerge)
739 , ([1,2], Opt_Strictness)
741 , ([1,2], Opt_FullLaziness)
743 , ([2], Opt_LiberateCase)
744 , ([2], Opt_SpecConstr)
745 , ([2], Opt_StaticArgumentTransformation)
747 , ([0,1,2], Opt_DoLambdaEtaExpansion)
748 -- This one is important for a tiresome reason:
749 -- we want to make sure that the bindings for data
750 -- constructors are eta-expanded. This is probably
751 -- a good thing anyway, but it seems fragile.
754 -- -----------------------------------------------------------------------------
755 -- Standard sets of warning options
757 standardWarnings :: [DynFlag]
759 = [ Opt_WarnDeprecations,
760 Opt_WarnDeprecatedFlags,
761 Opt_WarnOverlappingPatterns,
762 Opt_WarnMissingFields,
763 Opt_WarnMissingMethods,
764 Opt_WarnDuplicateExports,
765 Opt_WarnDodgyForeignImports
768 minusWOpts :: [DynFlag]
770 = standardWarnings ++
771 [ Opt_WarnUnusedBinds,
772 Opt_WarnUnusedMatches,
773 Opt_WarnUnusedImports,
774 Opt_WarnIncompletePatterns,
778 minusWallOpts :: [DynFlag]
781 [ Opt_WarnTypeDefaults,
782 Opt_WarnNameShadowing,
788 -- minuswRemovesOpts should be every warning option
789 minuswRemovesOpts :: [DynFlag]
792 [Opt_WarnImplicitPrelude,
793 Opt_WarnIncompletePatternsRecUpd,
794 Opt_WarnSimplePatterns,
795 Opt_WarnMonomorphism,
799 -- -----------------------------------------------------------------------------
800 -- CoreToDo: abstraction of core-to-core passes to run.
802 data CoreToDo -- These are diff core-to-core passes,
803 -- which may be invoked in any order,
804 -- as many times as you like.
806 = CoreDoSimplify -- The core-to-core simplifier.
809 -- Each run of the simplifier can take a different
810 -- set of simplifier-specific flags.
812 | CoreDoFloatOutwards FloatOutSwitches
817 | CoreDoWorkerWrapper
820 | CoreDoOldStrictness
823 | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
824 -- matching this string
825 | CoreDoVectorisation DPHBackend
826 | CoreDoNothing -- Useful when building up
827 | CoreDoPasses [CoreToDo] -- lists of these things
829 data SimplifierMode -- See comments in SimplMonad
831 | SimplPhase Int [String]
833 data SimplifierSwitch
834 = MaxSimplifierIterations Int
837 data FloatOutSwitches
838 = FloatOutSw Bool -- True <=> float lambdas to top level
839 Bool -- True <=> float constants to top level,
840 -- even if they do not escape a lambda
843 -- The core-to-core pass ordering is derived from the DynFlags:
844 runWhen :: Bool -> CoreToDo -> CoreToDo
845 runWhen True do_this = do_this
846 runWhen False _ = CoreDoNothing
848 runMaybe :: Maybe a -> (a -> CoreToDo) -> CoreToDo
849 runMaybe (Just x) f = f x
850 runMaybe Nothing _ = CoreDoNothing
852 getCoreToDo :: DynFlags -> [CoreToDo]
854 | Just todo <- coreToDo dflags = todo -- set explicitly by user
855 | otherwise = core_todo
857 opt_level = optLevel dflags
858 phases = simplPhases dflags
859 max_iter = maxSimplIterations dflags
860 strictness = dopt Opt_Strictness dflags
861 full_laziness = dopt Opt_FullLaziness dflags
862 cse = dopt Opt_CSE dflags
863 spec_constr = dopt Opt_SpecConstr dflags
864 liberate_case = dopt Opt_LiberateCase dflags
865 rule_check = ruleCheck dflags
866 static_args = dopt Opt_StaticArgumentTransformation dflags
868 maybe_rule_check phase = runMaybe rule_check (CoreDoRuleCheck phase)
870 simpl_phase phase names iter
872 [ CoreDoSimplify (SimplPhase phase names) [
873 MaxSimplifierIterations iter
875 maybe_rule_check phase
879 = runWhen (dopt Opt_Vectorise dflags)
880 $ CoreDoPasses [ simpl_gently, CoreDoVectorisation (dphBackend dflags) ]
883 -- By default, we have 2 phases before phase 0.
885 -- Want to run with inline phase 2 after the specialiser to give
886 -- maximum chance for fusion to work before we inline build/augment
887 -- in phase 1. This made a difference in 'ansi' where an
888 -- overloaded function wasn't inlined till too late.
890 -- Need phase 1 so that build/augment get
891 -- inlined. I found that spectral/hartel/genfft lost some useful
892 -- strictness in the function sumcode' if augment is not inlined
893 -- before strictness analysis runs
894 simpl_phases = CoreDoPasses [ simpl_phase phase ["main"] max_iter
895 | phase <- [phases, phases-1 .. 1] ]
898 -- initial simplify: mk specialiser happy: minimum effort please
899 simpl_gently = CoreDoSimplify SimplGently [
901 -- Don't inline anything till full laziness has bitten
902 -- In particular, inlining wrappers inhibits floating
903 -- e.g. ...(case f x of ...)...
904 -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
905 -- ==> ...(case x of I# x# -> case fw x# of ...)...
906 -- and now the redex (f x) isn't floatable any more
907 -- Similarly, don't apply any rules until after full
908 -- laziness. Notably, list fusion can prevent floating.
910 NoCaseOfCase, -- Don't do case-of-case transformations.
911 -- This makes full laziness work better
912 MaxSimplifierIterations max_iter
916 if opt_level == 0 then
918 simpl_phase 0 ["final"] max_iter]
919 else {- opt_level >= 1 -} [
921 -- We want to do the static argument transform before full laziness as it
922 -- may expose extra opportunities to float things outwards. However, to fix
923 -- up the output of the transformation we need at do at least one simplify
924 -- after this before anything else
925 runWhen static_args (CoreDoPasses [ simpl_gently, CoreDoStaticArgs ]),
927 -- We run vectorisation here for now, but we might also try to run
931 -- initial simplify: mk specialiser happy: minimum effort please
934 -- Specialisation is best done before full laziness
935 -- so that overloaded functions have all their dictionary lambdas manifest
938 runWhen full_laziness (CoreDoFloatOutwards (FloatOutSw False False)),
944 -- Phase 0: allow all Ids to be inlined now
945 -- This gets foldr inlined before strictness analysis
947 -- At least 3 iterations because otherwise we land up with
948 -- huge dead expressions because of an infelicity in the
950 -- let k = BIG in foldr k z xs
951 -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
952 -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
954 simpl_phase 0 ["main"] (max max_iter 3),
957 #ifdef OLD_STRICTNESS
960 runWhen strictness (CoreDoPasses [
964 simpl_phase 0 ["post-worker-wrapper"] max_iter
967 runWhen full_laziness
968 (CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
969 True)), -- Float constants
970 -- nofib/spectral/hartel/wang doubles in speed if you
971 -- do full laziness late in the day. It only happens
972 -- after fusion and other stuff, so the early pass doesn't
973 -- catch it. For the record, the redex is
974 -- f_el22 (f_el21 r_midblock)
978 -- We want CSE to follow the final full-laziness pass, because it may
979 -- succeed in commoning up things floated out by full laziness.
980 -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
986 -- Case-liberation for -O2. This should be after
987 -- strictness analysis and the simplification which follows it.
988 runWhen liberate_case (CoreDoPasses [
990 simpl_phase 0 ["post-liberate-case"] max_iter
991 ]), -- Run the simplifier after LiberateCase to vastly
992 -- reduce the possiblility of shadowing
993 -- Reason: see Note [Shadowing] in SpecConstr.lhs
995 runWhen spec_constr CoreDoSpecConstr,
999 -- Final clean-up simplification:
1000 simpl_phase 0 ["final"] max_iter
1003 -- -----------------------------------------------------------------------------
1004 -- StgToDo: abstraction of stg-to-stg passes to run.
1007 = StgDoMassageForProfiling -- should be (next to) last
1008 -- There's also setStgVarInfo, but its absolute "lastness"
1009 -- is so critical that it is hardwired in (no flag).
1012 getStgToDo :: DynFlags -> [StgToDo]
1014 | Just todo <- stgToDo dflags = todo -- set explicitly by user
1017 stg_stats = dopt Opt_StgStats dflags
1019 todo1 = if stg_stats then [D_stg_stats] else []
1021 todo2 | WayProf `elem` wayNames dflags
1022 = StgDoMassageForProfiling : todo1
1026 -- -----------------------------------------------------------------------------
1029 allFlags :: [String]
1030 allFlags = map ('-':) $
1031 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1032 map ("fno-"++) flags ++
1033 map ("f"++) flags ++
1034 map ("X"++) supportedLanguages ++
1035 map ("XNo"++) supportedLanguages
1036 where ok (PrefixPred _ _) = False
1038 flags = [ name | (name, _, _) <- fFlags ]
1040 dynamic_flags :: [Flag DynP]
1042 Flag "n" (NoArg (setDynFlag Opt_DryRun)) Supported
1043 , Flag "cpp" (NoArg (setDynFlag Opt_Cpp)) Supported
1044 , Flag "F" (NoArg (setDynFlag Opt_Pp)) Supported
1045 , Flag "#include" (HasArg (addCmdlineHCInclude)) Supported
1046 , Flag "v" (OptIntSuffix setVerbosity) Supported
1048 ------- Specific phases --------------------------------------------
1049 , Flag "pgmL" (HasArg (upd . setPgmL)) Supported
1050 , Flag "pgmP" (HasArg (upd . setPgmP)) Supported
1051 , Flag "pgmF" (HasArg (upd . setPgmF)) Supported
1052 , Flag "pgmc" (HasArg (upd . setPgmc)) Supported
1053 , Flag "pgmm" (HasArg (upd . setPgmm)) Supported
1054 , Flag "pgms" (HasArg (upd . setPgms)) Supported
1055 , Flag "pgma" (HasArg (upd . setPgma)) Supported
1056 , Flag "pgml" (HasArg (upd . setPgml)) Supported
1057 , Flag "pgmdll" (HasArg (upd . setPgmdll)) Supported
1058 , Flag "pgmwindres" (HasArg (upd . setPgmwindres)) Supported
1060 , Flag "optL" (HasArg (upd . addOptL)) Supported
1061 , Flag "optP" (HasArg (upd . addOptP)) Supported
1062 , Flag "optF" (HasArg (upd . addOptF)) Supported
1063 , Flag "optc" (HasArg (upd . addOptc)) Supported
1064 , Flag "optm" (HasArg (upd . addOptm)) Supported
1065 , Flag "opta" (HasArg (upd . addOpta)) Supported
1066 , Flag "optl" (HasArg (upd . addOptl)) Supported
1067 , Flag "optdep" (HasArg (upd . addOptdep)) Supported
1068 , Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
1071 (NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
1074 -------- Linking ----------------------------------------------------
1075 , Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1077 , Flag "no-link" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1078 (Deprecated "Use -c instead")
1079 , Flag "shared" (NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
1081 , Flag "dynload" (HasArg (upd . parseDynLibLoaderMode))
1084 ------- Libraries ---------------------------------------------------
1085 , Flag "L" (Prefix addLibraryPath ) Supported
1086 , Flag "l" (AnySuffix (\s -> do upd (addOptl s))) Supported
1088 ------- Frameworks --------------------------------------------------
1089 -- -framework-path should really be -F ...
1090 , Flag "framework-path" (HasArg addFrameworkPath ) Supported
1091 , Flag "framework" (HasArg (upd . addCmdlineFramework)) Supported
1093 ------- Output Redirection ------------------------------------------
1094 , Flag "odir" (HasArg (upd . setObjectDir)) Supported
1095 , Flag "o" (SepArg (upd . setOutputFile . Just)) Supported
1096 , Flag "ohi" (HasArg (upd . setOutputHi . Just )) Supported
1097 , Flag "osuf" (HasArg (upd . setObjectSuf)) Supported
1098 , Flag "hcsuf" (HasArg (upd . setHcSuf)) Supported
1099 , Flag "hisuf" (HasArg (upd . setHiSuf)) Supported
1100 , Flag "hidir" (HasArg (upd . setHiDir)) Supported
1101 , Flag "tmpdir" (HasArg (upd . setTmpDir)) Supported
1102 , Flag "stubdir" (HasArg (upd . setStubDir)) Supported
1103 , Flag "ddump-file-prefix" (HasArg (upd . setDumpPrefixForce . Just))
1106 ------- Keeping temporary files -------------------------------------
1107 -- These can be singular (think ghc -c) or plural (think ghc --make)
1108 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1109 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1110 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1111 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1112 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1113 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1114 -- This only makes sense as plural
1115 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles)) Supported
1117 ------- Miscellaneous ----------------------------------------------
1118 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages)) Supported
1119 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain)) Supported
1120 , Flag "main-is" (SepArg setMainIs ) Supported
1121 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock)) Supported
1122 , Flag "haddock-opts" (HasArg (upd . addHaddockOpts)) Supported
1123 , Flag "hpcdir" (SepArg setOptHpcDir) Supported
1125 ------- recompilation checker --------------------------------------
1126 , Flag "recomp" (NoArg (unSetDynFlag Opt_ForceRecomp))
1127 (Deprecated "Use -fno-force-recomp instead")
1128 , Flag "no-recomp" (NoArg (setDynFlag Opt_ForceRecomp))
1129 (Deprecated "Use -fforce-recomp instead")
1131 ------- Packages ----------------------------------------------------
1132 , Flag "package-conf" (HasArg extraPkgConf_) Supported
1133 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1135 , Flag "package-name" (HasArg (upd . setPackageName)) Supported
1136 , Flag "package" (HasArg exposePackage) Supported
1137 , Flag "hide-package" (HasArg hidePackage) Supported
1138 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1140 , Flag "ignore-package" (HasArg ignorePackage)
1142 , Flag "syslib" (HasArg exposePackage)
1143 (Deprecated "Use -package instead")
1145 ------ HsCpp opts ---------------------------------------------------
1146 , Flag "D" (AnySuffix (upd . addOptP)) Supported
1147 , Flag "U" (AnySuffix (upd . addOptP)) Supported
1149 ------- Include/Import Paths ----------------------------------------
1150 , Flag "I" (Prefix addIncludePath) Supported
1151 , Flag "i" (OptPrefix addImportPath ) Supported
1153 ------ Debugging ----------------------------------------------------
1154 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats)) Supported
1156 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1158 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1160 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1162 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1164 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1166 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1168 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1170 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1172 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1174 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1176 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1178 , Flag "ddump-asm-regalloc-stages"
1179 (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1181 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1183 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1185 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1187 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1189 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1191 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1193 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1195 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1197 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1199 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1201 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1203 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1205 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1207 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1209 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1211 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1213 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1215 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1217 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1219 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1221 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1223 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1225 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1227 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1229 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1231 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1233 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1235 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1237 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1239 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1241 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1243 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1245 , Flag "dverbose-core2core" (NoArg setVerboseCore2Core)
1247 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1249 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1251 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1253 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1255 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1257 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1259 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1261 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1263 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1266 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1268 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1270 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1272 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1274 , Flag "dshow-passes"
1275 (NoArg (do setDynFlag Opt_ForceRecomp
1276 setVerbosity (Just 2)))
1278 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1281 ------ Machine dependant (-m<blah>) stuff ---------------------------
1283 , Flag "monly-2-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 2}) ))
1285 , Flag "monly-3-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 3}) ))
1287 , Flag "monly-4-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 4}) ))
1290 ------ Warning opts -------------------------------------------------
1291 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1293 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1295 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1297 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1299 , Flag "Wnot" (NoArg (mapM_ unSetDynFlag minusWallOpts))
1300 (Deprecated "Use -w instead")
1301 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1304 ------ Optimisation flags ------------------------------------------
1305 , Flag "O" (NoArg (upd (setOptLevel 1))) Supported
1306 , Flag "Onot" (NoArg (upd (setOptLevel 0)))
1307 (Deprecated "Use -O0 instead")
1308 , Flag "Odph" (NoArg (upd setDPHOpt)) Supported
1309 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1311 -- If the number is missing, use 1
1313 , Flag "fsimplifier-phases"
1314 (IntSuffix (\n -> upd (\dfs -> dfs{ simplPhases = n })))
1316 , Flag "fmax-simplifier-iterations"
1317 (IntSuffix (\n -> upd (\dfs -> dfs{ maxSimplIterations = n })))
1320 , Flag "fspec-constr-threshold"
1321 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrThreshold = Just n })))
1323 , Flag "fno-spec-constr-threshold"
1324 (NoArg (upd (\dfs -> dfs{ specConstrThreshold = Nothing })))
1326 , Flag "fspec-constr-count"
1327 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrCount = Just n })))
1329 , Flag "fno-spec-constr-count"
1330 (NoArg (upd (\dfs -> dfs{ specConstrCount = Nothing })))
1332 , Flag "fliberate-case-threshold"
1333 (IntSuffix (\n -> upd (\dfs -> dfs{ liberateCaseThreshold = Just n })))
1335 , Flag "fno-liberate-case-threshold"
1336 (NoArg (upd (\dfs -> dfs{ liberateCaseThreshold = Nothing })))
1339 , Flag "frule-check"
1340 (SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s })))
1342 , Flag "fcontext-stack"
1343 (IntSuffix $ \n -> upd $ \dfs -> dfs{ ctxtStkDepth = n })
1346 ------ DPH flags ----------------------------------------------------
1349 (NoArg (upd (setDPHBackend DPHSeq)))
1352 (NoArg (upd (setDPHBackend DPHPar)))
1355 ------ Compiler flags -----------------------------------------------
1357 , Flag "fasm" (NoArg (setObjTarget HscAsm)) Supported
1358 , Flag "fvia-c" (NoArg (setObjTarget HscC)) Supported
1359 , Flag "fvia-C" (NoArg (setObjTarget HscC)) Supported
1361 , Flag "fno-code" (NoArg (setTarget HscNothing)) Supported
1362 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted)) Supported
1363 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget)) Supported
1365 , Flag "fglasgow-exts" (NoArg (mapM_ setDynFlag glasgowExtsFlags))
1367 , Flag "fno-glasgow-exts" (NoArg (mapM_ unSetDynFlag glasgowExtsFlags))
1370 ++ map (mkFlag True "f" setDynFlag ) fFlags
1371 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1372 ++ map (mkFlag True "X" setDynFlag ) xFlags
1373 ++ map (mkFlag False "XNo" unSetDynFlag) xFlags
1375 mkFlag :: Bool -- True => turn it on, False => turn it off
1377 -> (DynFlag -> DynP ())
1378 -> (String, DynFlag, Bool -> Deprecated)
1380 mkFlag turnOn flagPrefix f (name, dynflag, deprecated)
1381 = Flag (flagPrefix ++ name) (NoArg (f dynflag)) (deprecated turnOn)
1383 deprecatedForLanguage :: String -> Bool -> Deprecated
1384 deprecatedForLanguage lang turnOn =
1385 Deprecated ("Use the " ++ prefix ++ lang ++ " language instead")
1386 where prefix = if turnOn then "" else "No"
1388 -- these -f<blah> flags can all be reversed with -fno-<blah>
1390 fFlags :: [(String, DynFlag, Bool -> Deprecated)]
1392 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, const Supported ),
1393 ( "warn-dodgy-imports", Opt_WarnDodgyImports, const Supported ),
1394 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, const Supported ),
1395 ( "warn-hi-shadowing", Opt_WarnHiShadows, const Supported ),
1396 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, const Supported ),
1397 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, const Supported ),
1398 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, const Supported ),
1399 ( "warn-missing-fields", Opt_WarnMissingFields, const Supported ),
1400 ( "warn-missing-methods", Opt_WarnMissingMethods, const Supported ),
1401 ( "warn-missing-signatures", Opt_WarnMissingSigs, const Supported ),
1402 ( "warn-name-shadowing", Opt_WarnNameShadowing, const Supported ),
1403 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, const Supported ),
1404 ( "warn-simple-patterns", Opt_WarnSimplePatterns, const Supported ),
1405 ( "warn-type-defaults", Opt_WarnTypeDefaults, const Supported ),
1406 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, const Supported ),
1407 ( "warn-unused-binds", Opt_WarnUnusedBinds, const Supported ),
1408 ( "warn-unused-imports", Opt_WarnUnusedImports, const Supported ),
1409 ( "warn-unused-matches", Opt_WarnUnusedMatches, const Supported ),
1410 ( "warn-deprecations", Opt_WarnDeprecations, const Supported ),
1411 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, const Supported ),
1412 ( "warn-orphans", Opt_WarnOrphans, const Supported ),
1413 ( "warn-tabs", Opt_WarnTabs, const Supported ),
1414 ( "print-explicit-foralls", Opt_PrintExplicitForalls, const Supported ),
1415 ( "strictness", Opt_Strictness, const Supported ),
1416 ( "static-argument-transformation", Opt_StaticArgumentTransformation, const Supported ),
1417 ( "full-laziness", Opt_FullLaziness, const Supported ),
1418 ( "liberate-case", Opt_LiberateCase, const Supported ),
1419 ( "spec-constr", Opt_SpecConstr, const Supported ),
1420 ( "cse", Opt_CSE, const Supported ),
1421 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, const Supported ),
1422 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, const Supported ),
1423 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, const Supported ),
1424 ( "ignore-asserts", Opt_IgnoreAsserts, const Supported ),
1425 ( "do-eta-reduction", Opt_DoEtaReduction, const Supported ),
1426 ( "case-merge", Opt_CaseMerge, const Supported ),
1427 ( "unbox-strict-fields", Opt_UnboxStrictFields, const Supported ),
1428 ( "method-sharing", Opt_MethodSharing, const Supported ),
1429 ( "dicts-cheap", Opt_DictsCheap, const Supported ),
1430 ( "excess-precision", Opt_ExcessPrecision, const Supported ),
1431 ( "asm-mangling", Opt_DoAsmMangling, const Supported ),
1432 ( "print-bind-result", Opt_PrintBindResult, const Supported ),
1433 ( "force-recomp", Opt_ForceRecomp, const Supported ),
1434 ( "hpc-no-auto", Opt_Hpc_No_Auto, const Supported ),
1435 ( "rewrite-rules", Opt_RewriteRules, const Supported ),
1436 ( "break-on-exception", Opt_BreakOnException, const Supported ),
1437 ( "break-on-error", Opt_BreakOnError, const Supported ),
1438 ( "print-evld-with-show", Opt_PrintEvldWithShow, const Supported ),
1439 ( "print-bind-contents", Opt_PrintBindContents, const Supported ),
1440 ( "run-cps", Opt_RunCPSZ, const Supported ),
1441 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, const Supported ),
1442 ( "vectorise", Opt_Vectorise, const Supported ),
1443 ( "regs-graph", Opt_RegsGraph, const Supported ),
1444 ( "regs-iterative", Opt_RegsIterative, const Supported ),
1445 ( "th", Opt_TemplateHaskell,
1446 deprecatedForLanguage "TemplateHaskell" ),
1447 ( "fi", Opt_ForeignFunctionInterface,
1448 deprecatedForLanguage "ForeignFunctionInterface" ),
1449 ( "ffi", Opt_ForeignFunctionInterface,
1450 deprecatedForLanguage "ForeignFunctionInterface" ),
1451 ( "arrows", Opt_Arrows,
1452 deprecatedForLanguage "Arrows" ),
1453 ( "generics", Opt_Generics,
1454 deprecatedForLanguage "Generics" ),
1455 ( "implicit-prelude", Opt_ImplicitPrelude,
1456 deprecatedForLanguage "ImplicitPrelude" ),
1457 ( "bang-patterns", Opt_BangPatterns,
1458 deprecatedForLanguage "BangPatterns" ),
1459 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1460 deprecatedForLanguage "MonomorphismRestriction" ),
1461 ( "mono-pat-binds", Opt_MonoPatBinds,
1462 deprecatedForLanguage "MonoPatBinds" ),
1463 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1464 deprecatedForLanguage "ExtendedDefaultRules" ),
1465 ( "implicit-params", Opt_ImplicitParams,
1466 deprecatedForLanguage "ImplicitParams" ),
1467 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1468 deprecatedForLanguage "ScopedTypeVariables" ),
1470 deprecatedForLanguage "PArr" ),
1471 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1472 deprecatedForLanguage "OverlappingInstances" ),
1473 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1474 deprecatedForLanguage "UndecidableInstances" ),
1475 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1476 deprecatedForLanguage "IncoherentInstances" ),
1477 ( "gen-manifest", Opt_GenManifest, const Supported ),
1478 ( "embed-manifest", Opt_EmbedManifest, const Supported )
1481 supportedLanguages :: [String]
1482 supportedLanguages = [ name | (name, _, _) <- xFlags ]
1484 -- This may contain duplicates
1485 languageOptions :: [DynFlag]
1486 languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
1488 -- These -X<blah> flags can all be reversed with -XNo<blah>
1489 xFlags :: [(String, DynFlag, Bool -> Deprecated)]
1491 ( "CPP", Opt_Cpp, const Supported ),
1492 ( "PostfixOperators", Opt_PostfixOperators, const Supported ),
1493 ( "PatternGuards", Opt_PatternGuards, const Supported ),
1494 ( "UnicodeSyntax", Opt_UnicodeSyntax, const Supported ),
1495 ( "MagicHash", Opt_MagicHash, const Supported ),
1496 ( "PolymorphicComponents", Opt_PolymorphicComponents, const Supported ),
1497 ( "ExistentialQuantification", Opt_ExistentialQuantification, const Supported ),
1498 ( "KindSignatures", Opt_KindSignatures, const Supported ),
1499 ( "PatternSignatures", Opt_PatternSignatures, const Supported ),
1500 ( "EmptyDataDecls", Opt_EmptyDataDecls, const Supported ),
1501 ( "ParallelListComp", Opt_ParallelListComp, const Supported ),
1502 ( "TransformListComp", Opt_TransformListComp, const Supported ),
1503 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, const Supported ),
1504 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, const Supported ),
1505 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, const Supported ),
1506 ( "Rank2Types", Opt_Rank2Types, const Supported ),
1507 ( "RankNTypes", Opt_RankNTypes, const Supported ),
1508 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, const Supported ),
1509 ( "TypeOperators", Opt_TypeOperators, const Supported ),
1510 ( "RecursiveDo", Opt_RecursiveDo, const Supported ),
1511 ( "Arrows", Opt_Arrows, const Supported ),
1512 ( "PArr", Opt_PArr, const Supported ),
1513 ( "TemplateHaskell", Opt_TemplateHaskell, const Supported ),
1514 ( "QuasiQuotes", Opt_QuasiQuotes, const Supported ),
1515 ( "Generics", Opt_Generics, const Supported ),
1517 ( "ImplicitPrelude", Opt_ImplicitPrelude, const Supported ),
1518 ( "RecordWildCards", Opt_RecordWildCards, const Supported ),
1519 ( "NamedFieldPuns", Opt_RecordPuns, const Supported ),
1520 ( "RecordPuns", Opt_RecordPuns,
1521 deprecatedForLanguage "NamedFieldPuns" ),
1522 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, const Supported ),
1523 ( "OverloadedStrings", Opt_OverloadedStrings, const Supported ),
1524 ( "GADTs", Opt_GADTs, const Supported ),
1525 ( "ViewPatterns", Opt_ViewPatterns, const Supported ),
1526 ( "TypeFamilies", Opt_TypeFamilies, const Supported ),
1527 ( "BangPatterns", Opt_BangPatterns, const Supported ),
1529 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, const Supported ),
1530 -- On by default (which is not strictly H98):
1531 ( "MonoPatBinds", Opt_MonoPatBinds, const Supported ),
1532 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, const Supported ),
1533 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, const Supported ),
1534 ( "ImplicitParams", Opt_ImplicitParams, const Supported ),
1535 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, const Supported ),
1536 ( "UnboxedTuples", Opt_UnboxedTuples, const Supported ),
1537 ( "StandaloneDeriving", Opt_StandaloneDeriving, const Supported ),
1538 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, const Supported ),
1539 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, const Supported ),
1540 ( "FlexibleContexts", Opt_FlexibleContexts, const Supported ),
1541 ( "FlexibleInstances", Opt_FlexibleInstances, const Supported ),
1542 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, const Supported ),
1543 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, const Supported ),
1544 ( "FunctionalDependencies", Opt_FunctionalDependencies, const Supported ),
1545 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, const Supported ),
1546 ( "OverlappingInstances", Opt_OverlappingInstances, const Supported ),
1547 ( "UndecidableInstances", Opt_UndecidableInstances, const Supported ),
1548 ( "IncoherentInstances", Opt_IncoherentInstances, const Supported )
1551 impliedFlags :: [(DynFlag, [DynFlag])]
1553 ( Opt_GADTs, [Opt_RelaxedPolyRec] ) -- We want type-sig variables to
1554 -- be completely rigid for GADTs
1555 , ( Opt_ScopedTypeVariables, [Opt_RelaxedPolyRec] ) -- Ditto for scoped type variables; see
1556 -- Note [Scoped tyvars] in TcBinds
1559 glasgowExtsFlags :: [DynFlag]
1560 glasgowExtsFlags = [
1561 Opt_PrintExplicitForalls
1562 , Opt_ForeignFunctionInterface
1563 , Opt_UnliftedFFITypes
1565 , Opt_ImplicitParams
1566 , Opt_ScopedTypeVariables
1568 , Opt_TypeSynonymInstances
1569 , Opt_StandaloneDeriving
1570 , Opt_DeriveDataTypeable
1571 , Opt_FlexibleContexts
1572 , Opt_FlexibleInstances
1573 , Opt_ConstrainedClassMethods
1574 , Opt_MultiParamTypeClasses
1575 , Opt_FunctionalDependencies
1577 , Opt_PolymorphicComponents
1578 , Opt_ExistentialQuantification
1580 , Opt_PostfixOperators
1582 , Opt_LiberalTypeSynonyms
1584 , Opt_ImpredicativeTypes
1587 , Opt_ParallelListComp
1588 , Opt_EmptyDataDecls
1589 , Opt_KindSignatures
1590 , Opt_PatternSignatures
1591 , Opt_GeneralizedNewtypeDeriving
1592 , Opt_TypeFamilies ]
1594 -- -----------------------------------------------------------------------------
1595 -- Parsing the dynamic flags.
1597 parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags, [String], [String])
1598 parseDynamicFlags dflags args = do
1599 let ((leftover, errs, warns), dflags')
1600 = runCmdLine (processArgs dynamic_flags args) dflags
1601 when (not (null errs)) $ do
1602 throwDyn (UsageError (unlines errs))
1603 return (dflags', leftover, warns)
1605 type DynP = CmdLineP DynFlags
1607 upd :: (DynFlags -> DynFlags) -> DynP ()
1609 dfs <- getCmdLineState
1610 putCmdLineState $! (f dfs)
1612 --------------------------
1613 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1614 setDynFlag f = upd (\dfs -> foldl dopt_set (dopt_set dfs f) deps)
1616 deps = [ d | (f', ds) <- impliedFlags, f' == f, d <- ds ]
1617 -- When you set f, set the ones it implies
1618 -- When you un-set f, however, we don't un-set the things it implies
1619 -- (except for -fno-glasgow-exts, which is treated specially)
1621 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1623 --------------------------
1624 setDumpFlag :: DynFlag -> OptKind DynP
1625 setDumpFlag dump_flag
1626 | force_recomp = NoArg (setDynFlag Opt_ForceRecomp >> setDynFlag dump_flag)
1627 | otherwise = NoArg (setDynFlag dump_flag)
1629 -- Whenver we -ddump, switch off the recompilation checker,
1630 -- else you don't see the dump!
1631 -- However, certain dumpy-things are really interested in what's going
1632 -- on during recompilation checking, so in those cases we
1633 -- don't want to turn it off.
1634 force_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1635 Opt_D_dump_hi_diffs]
1637 setVerboseCore2Core :: DynP ()
1638 setVerboseCore2Core = do setDynFlag Opt_ForceRecomp
1639 setDynFlag Opt_D_verbose_core2core
1640 upd (\s -> s { shouldDumpSimplPhase = const True })
1642 setDumpSimplPhases :: String -> DynP ()
1643 setDumpSimplPhases s = do setDynFlag Opt_ForceRecomp
1644 upd (\s -> s { shouldDumpSimplPhase = spec })
1646 spec :: SimplifierMode -> Bool
1648 . map (join (&&) . map match . split ':')
1654 join :: (Bool -> Bool -> Bool)
1655 -> [SimplifierMode -> Bool]
1656 -> SimplifierMode -> Bool
1657 join _ [] = const True
1658 join op ss = foldr1 (\f g x -> f x `op` g x) ss
1660 match :: String -> SimplifierMode -> Bool
1661 match "" = const True
1662 match s = case reads s of
1663 [(n,"")] -> phase_num n
1666 phase_num :: Int -> SimplifierMode -> Bool
1667 phase_num n (SimplPhase k _) = n == k
1668 phase_num _ _ = False
1670 phase_name :: String -> SimplifierMode -> Bool
1671 phase_name s SimplGently = s == "gentle"
1672 phase_name s (SimplPhase _ ss) = s `elem` ss
1674 setVerbosity :: Maybe Int -> DynP ()
1675 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1677 addCmdlineHCInclude :: String -> DynP ()
1678 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1680 extraPkgConf_ :: FilePath -> DynP ()
1681 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1683 exposePackage, hidePackage, ignorePackage :: String -> DynP ()
1685 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1687 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1689 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1691 setPackageName :: String -> DynFlags -> DynFlags
1693 | Nothing <- unpackPackageId pid
1694 = throwDyn (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
1696 = \s -> s{ thisPackage = pid }
1698 pid = stringToPackageId p
1700 -- If we're linking a binary, then only targets that produce object
1701 -- code are allowed (requests for other target types are ignored).
1702 setTarget :: HscTarget -> DynP ()
1703 setTarget l = upd set
1706 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1709 -- Changes the target only if we're compiling object code. This is
1710 -- used by -fasm and -fvia-C, which switch from one to the other, but
1711 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1712 -- can be safely used in an OPTIONS_GHC pragma.
1713 setObjTarget :: HscTarget -> DynP ()
1714 setObjTarget l = upd set
1717 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1720 setOptLevel :: Int -> DynFlags -> DynFlags
1721 setOptLevel n dflags
1722 | hscTarget dflags == HscInterpreted && n > 0
1724 -- not in IO any more, oh well:
1725 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1727 = updOptLevel n dflags
1730 -- -Odph is equivalent to
1732 -- -O2 optimise as much as possible
1733 -- -fno-method-sharing sharing specialisation defeats fusion
1735 -- -fdicts-cheap always inline dictionaries
1736 -- -fmax-simplifier-iterations20 this is necessary sometimes
1737 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1739 setDPHOpt :: DynFlags -> DynFlags
1740 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1741 , specConstrThreshold = Nothing
1743 `dopt_set` Opt_DictsCheap
1744 `dopt_unset` Opt_MethodSharing
1746 data DPHBackend = DPHPar
1749 setDPHBackend :: DPHBackend -> DynFlags -> DynFlags
1750 setDPHBackend backend dflags = dflags { dphBackend = backend }
1753 setMainIs :: String -> DynP ()
1755 | not (null main_fn) && isLower (head main_fn)
1756 -- The arg looked like "Foo.Bar.baz"
1757 = upd $ \d -> d{ mainFunIs = Just main_fn,
1758 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
1760 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
1761 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
1763 | otherwise -- The arg looked like "baz"
1764 = upd $ \d -> d{ mainFunIs = Just arg }
1766 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
1768 -----------------------------------------------------------------------------
1769 -- Paths & Libraries
1771 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
1773 -- -i on its own deletes the import paths
1774 addImportPath "" = upd (\s -> s{importPaths = []})
1775 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
1779 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
1782 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
1784 addFrameworkPath p =
1785 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
1787 #ifndef mingw32_TARGET_OS
1788 split_marker :: Char
1789 split_marker = ':' -- not configurable (ToDo)
1792 splitPathList :: String -> [String]
1793 splitPathList s = filter notNull (splitUp s)
1794 -- empty paths are ignored: there might be a trailing
1795 -- ':' in the initial list, for example. Empty paths can
1796 -- cause confusion when they are translated into -I options
1797 -- for passing to gcc.
1799 #ifndef mingw32_TARGET_OS
1800 splitUp xs = split split_marker xs
1802 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
1804 -- That is, if "foo:bar:baz" is used, this interpreted as
1805 -- consisting of three entries, 'foo', 'bar', 'baz'.
1806 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
1807 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
1809 -- Notice that no attempt is made to fully replace the 'standard'
1810 -- split marker ':' with the Windows / DOS one, ';'. The reason being
1811 -- that this will cause too much breakage for users & ':' will
1812 -- work fine even with DOS paths, if you're not insisting on being silly.
1815 splitUp (x:':':div:xs) | div `elem` dir_markers
1816 = ((x:':':div:p): splitUp rs)
1818 (p,rs) = findNextPath xs
1819 -- we used to check for existence of the path here, but that
1820 -- required the IO monad to be threaded through the command-line
1821 -- parser which is quite inconvenient. The
1822 splitUp xs = cons p (splitUp rs)
1824 (p,rs) = findNextPath xs
1829 -- will be called either when we've consumed nought or the
1830 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
1831 -- finding the next split marker.
1833 case break (`elem` split_markers) xs of
1834 (p, _:ds) -> (p, ds)
1837 split_markers :: [Char]
1838 split_markers = [':', ';']
1840 dir_markers :: [Char]
1841 dir_markers = ['/', '\\']
1844 -- -----------------------------------------------------------------------------
1845 -- tmpDir, where we store temporary files.
1847 setTmpDir :: FilePath -> DynFlags -> DynFlags
1848 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
1849 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
1850 -- seem necessary now --SDM 7/2/2008
1852 -----------------------------------------------------------------------------
1855 setOptHpcDir :: String -> DynP ()
1856 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
1858 -----------------------------------------------------------------------------
1859 -- Via-C compilation stuff
1861 -- There are some options that we need to pass to gcc when compiling
1862 -- Haskell code via C, but are only supported by recent versions of
1863 -- gcc. The configure script decides which of these options we need,
1864 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
1865 -- read before each via-C compilation. The advantage of having these
1866 -- in a separate file is that the file can be created at install-time
1867 -- depending on the available gcc version, and even re-generated later
1868 -- if gcc is upgraded.
1870 -- The options below are not dependent on the version of gcc, only the
1873 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
1874 [String]) -- for registerised HC compilations
1875 machdepCCOpts _dflags
1876 #if alpha_TARGET_ARCH
1878 #ifdef HAVE_THREADED_RTS_SUPPORT
1882 -- For now, to suppress the gcc warning "call-clobbered
1883 -- register used for global register variable", we simply
1884 -- disable all warnings altogether using the -w flag. Oh well.
1886 #elif hppa_TARGET_ARCH
1887 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1888 -- (very nice, but too bad the HP /usr/include files don't agree.)
1889 = ( ["-D_HPUX_SOURCE"], [] )
1891 #elif m68k_TARGET_ARCH
1892 -- -fno-defer-pop : for the .hc files, we want all the pushing/
1893 -- popping of args to routines to be explicit; if we let things
1894 -- be deferred 'til after an STGJUMP, imminent death is certain!
1896 -- -fomit-frame-pointer : *don't*
1897 -- It's better to have a6 completely tied up being a frame pointer
1898 -- rather than let GCC pick random things to do with it.
1899 -- (If we want to steal a6, then we would try to do things
1900 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
1901 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
1903 #elif i386_TARGET_ARCH
1904 -- -fno-defer-pop : basically the same game as for m68k
1906 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
1907 -- the fp (%ebp) for our register maps.
1908 = let n_regs = stolen_x86_regs _dflags
1911 ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
1914 "-fomit-frame-pointer",
1915 -- we want -fno-builtin, because when gcc inlines
1916 -- built-in functions like memcpy() it tends to
1917 -- run out of registers, requiring -monly-n-regs
1919 "-DSTOLEN_X86_REGS="++show n_regs ]
1922 #elif ia64_TARGET_ARCH
1923 = ( [], ["-fomit-frame-pointer", "-G0"] )
1925 #elif x86_64_TARGET_ARCH
1926 = ( [], ["-fomit-frame-pointer",
1927 "-fno-asynchronous-unwind-tables",
1928 -- the unwind tables are unnecessary for HC code,
1929 -- and get in the way of -split-objs. Another option
1930 -- would be to throw them away in the mangler, but this
1933 -- calling builtins like strlen() using the FFI can
1934 -- cause gcc to run out of regs, so use the external
1938 #elif sparc_TARGET_ARCH
1940 -- For now, to suppress the gcc warning "call-clobbered
1941 -- register used for global register variable", we simply
1942 -- disable all warnings altogether using the -w flag. Oh well.
1944 #elif powerpc_apple_darwin_TARGET
1946 -- Disable Apple's precompiling preprocessor. It's a great thing
1947 -- for "normal" programs, but it doesn't support register variable
1949 = ( [], ["-no-cpp-precomp"] )
1954 picCCOpts :: DynFlags -> [String]
1956 #if darwin_TARGET_OS
1957 -- Apple prefers to do things the other way round.
1958 -- PIC is on by default.
1959 -- -mdynamic-no-pic:
1960 -- Turn off PIC code generation.
1962 -- Don't generate "common" symbols - these are unwanted
1963 -- in dynamic libraries.
1966 = ["-fno-common", "-D__PIC__"]
1968 = ["-mdynamic-no-pic"]
1969 #elif mingw32_TARGET_OS
1970 -- no -fPIC for Windows
1977 = ["-fPIC", "-D__PIC__"]
1982 -- -----------------------------------------------------------------------------
1986 can_split = cSplitObjs == "YES"
1988 -- -----------------------------------------------------------------------------
1991 compilerInfo :: [(String, String)]
1992 compilerInfo = [("Project name", cProjectName),
1993 ("Project version", cProjectVersion),
1994 ("Booter version", cBooterVersion),
1996 ("Interface file version", cHscIfaceFileVersion),
1997 ("Have interpreter", cGhcWithInterpreter),
1998 ("Object splitting", cSplitObjs),
1999 ("Have native code generator", cGhcWithNativeCodeGen),
2000 ("Support SMP", cGhcWithSMP),
2001 ("Unregisterised", cGhcUnregisterised),
2002 ("Tables next to code", cGhcEnableTablesNextToCode),
2003 ("Win32 DLLs", cEnableWin32DLLs),
2004 ("RTS ways", cGhcRTSWays),
2005 ("Leading underscore", cLeadingUnderscore),
2006 ("Debug on", show debugIsOn)