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 ( hPutStrLn, stderr )
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
226 | Opt_LiberalTypeSynonyms
229 | Opt_ImpredicativeTypes
232 | Opt_PrintExplicitForalls
237 | Opt_StaticArgumentTransformation
241 | Opt_IgnoreInterfacePragmas
242 | Opt_OmitInterfacePragmas
243 | Opt_DoLambdaEtaExpansion
247 | Opt_UnboxStrictFields
252 | Opt_RegsGraph -- do graph coloring register allocation
253 | Opt_RegsIterative -- do iterative coalescing graph coloring register allocation
261 | Opt_ExcessPrecision
262 | Opt_ReadUserPackageConf
266 | Opt_HideAllPackages
267 | Opt_PrintBindResult
271 | Opt_BreakOnException
273 | Opt_PrintEvldWithShow
274 | Opt_PrintBindContents
278 | Opt_ConvertToZipCfgAndBack
279 | Opt_AutoLinkPackages
290 data DynFlags = DynFlags {
293 coreToDo :: Maybe [CoreToDo], -- reserved for -Ofile
294 stgToDo :: Maybe [StgToDo], -- similarly
295 hscTarget :: HscTarget,
296 hscOutName :: String, -- name of the output file
297 extCoreName :: String, -- name of the .core output file
298 verbosity :: Int, -- verbosity level
299 optLevel :: Int, -- optimisation level
300 simplPhases :: Int, -- number of simplifier phases
301 maxSimplIterations :: Int, -- max simplifier iterations
302 shouldDumpSimplPhase :: SimplifierMode -> Bool,
303 ruleCheck :: Maybe String,
305 specConstrThreshold :: Maybe Int, -- Threshold for SpecConstr
306 specConstrCount :: Maybe Int, -- Max number of specialisations for any one function
307 liberateCaseThreshold :: Maybe Int, -- Threshold for LiberateCase
309 stolen_x86_regs :: Int,
310 cmdlineHcIncludes :: [String], -- -#includes
311 importPaths :: [FilePath],
313 mainFunIs :: Maybe String,
314 ctxtStkDepth :: Int, -- Typechecker context stack depth
316 dphBackend :: DPHBackend,
318 thisPackage :: PackageId,
321 wayNames :: [WayName], -- way flags from the cmd line
322 buildTag :: String, -- the global "way" (eg. "p" for prof)
323 rtsBuildTag :: String, -- the RTS "way"
326 objectDir :: Maybe String,
327 hiDir :: Maybe String,
328 stubDir :: Maybe String,
334 outputFile :: Maybe String,
335 outputHi :: Maybe String,
336 dynLibLoader :: DynLibLoader,
338 -- | This is set by DriverPipeline.runPipeline based on where
339 -- its output is going.
340 dumpPrefix :: Maybe FilePath,
342 -- | Override the dumpPrefix set by runPipeline.
343 -- Set by -ddump-file-prefix
344 dumpPrefixForce :: Maybe FilePath,
346 includePaths :: [String],
347 libraryPaths :: [String],
348 frameworkPaths :: [String], -- used on darwin only
349 cmdlineFrameworks :: [String], -- ditto
350 tmpDir :: String, -- no trailing '/'
352 ghcUsagePath :: FilePath, -- Filled in by SysTools
353 ghciUsagePath :: FilePath, -- ditto
355 hpcDir :: String, -- ^ path to store the .mix files
357 -- options for particular phases
366 opt_windres :: [String],
368 -- commands for particular phases
370 pgm_P :: (String,[Option]),
372 pgm_c :: (String,[Option]),
373 pgm_m :: (String,[Option]),
374 pgm_s :: (String,[Option]),
375 pgm_a :: (String,[Option]),
376 pgm_l :: (String,[Option]),
377 pgm_dll :: (String,[Option]),
379 pgm_sysman :: String,
380 pgm_windres :: String,
383 extraPkgConfs :: [FilePath],
384 topDir :: FilePath, -- filled in by SysTools
385 systemPackageConfig :: FilePath, -- ditto
386 -- The -package-conf flags given on the command line, in the order
389 packageFlags :: [PackageFlag],
390 -- The -package and -hide-package flags from the command-line
393 -- NB. do not modify this field, it is calculated by
394 -- Packages.initPackages and Packages.updatePackages.
395 pkgDatabase :: Maybe (UniqFM PackageConfig),
396 pkgState :: PackageState,
402 log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
404 haddockOptions :: Maybe String
415 -- | will this target result in an object file on the disk?
416 isObjectTarget :: HscTarget -> Bool
417 isObjectTarget HscC = True
418 isObjectTarget HscAsm = True
419 isObjectTarget _ = False
421 -- | The 'GhcMode' tells us whether we're doing multi-module
422 -- compilation (controlled via the "GHC" API) or one-shot
423 -- (single-module) compilation. This makes a difference primarily to
424 -- the "Finder": in one-shot mode we look for interface files for
425 -- imported modules, but in multi-module mode we look for source files
426 -- in order to check whether they need to be recompiled.
428 = CompManager -- ^ --make, GHCi, etc.
429 | OneShot -- ^ ghc -c Foo.hs
430 | MkDepend -- ^ ghc -M, see Finder for why we need this
433 isOneShot :: GhcMode -> Bool
434 isOneShot OneShot = True
435 isOneShot _other = False
437 -- | What kind of linking to do.
438 data GhcLink -- What to do in the link step, if there is one
439 = NoLink -- Don't link at all
440 | LinkBinary -- Link object code into a binary
441 | LinkInMemory -- Use the in-memory dynamic linker
442 | LinkDynLib -- Link objects into a dynamic lib (DLL on Windows, DSO on ELF platforms)
445 isNoLink :: GhcLink -> Bool
446 isNoLink NoLink = True
450 = ExposePackage String
452 | IgnorePackage String
455 defaultHscTarget :: HscTarget
456 defaultHscTarget = defaultObjectTarget
458 -- | the 'HscTarget' value corresponding to the default way to create
459 -- object files on the current platform.
460 defaultObjectTarget :: HscTarget
462 | cGhcWithNativeCodeGen == "YES" = HscAsm
467 | Wrapped (Maybe String)
471 initDynFlags :: DynFlags -> IO DynFlags
472 initDynFlags dflags = do
473 -- someday these will be dynamic flags
474 ways <- readIORef v_Ways
475 build_tag <- readIORef v_Build_tag
476 rts_build_tag <- readIORef v_RTS_Build_tag
479 buildTag = build_tag,
480 rtsBuildTag = rts_build_tag
483 defaultDynFlags :: DynFlags
486 ghcMode = CompManager,
487 ghcLink = LinkBinary,
490 hscTarget = defaultHscTarget,
496 maxSimplIterations = 4,
497 shouldDumpSimplPhase = const False,
499 specConstrThreshold = Just 200,
500 specConstrCount = Just 3,
501 liberateCaseThreshold = Just 200,
503 cmdlineHcIncludes = [],
507 ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
511 thisPackage = mainPackageId,
517 objectSuf = phaseInputExt StopLn,
518 hcSuf = phaseInputExt HCc,
521 outputFile = Nothing,
523 dynLibLoader = Deployable,
524 dumpPrefix = Nothing,
525 dumpPrefixForce = Nothing,
529 cmdlineFrameworks = [],
530 tmpDir = cDEFAULT_TMPDIR,
548 pkgDatabase = Nothing,
549 pkgState = panic "no package state yet: call GHC.setSessionDynFlags",
550 wayNames = panic "defaultDynFlags: No wayNames",
551 buildTag = panic "defaultDynFlags: No buildTag",
552 rtsBuildTag = panic "defaultDynFlags: No rtsBuildTag",
553 -- initSysTools fills all these in
554 ghcUsagePath = panic "defaultDynFlags: No ghciUsagePath",
555 ghciUsagePath = panic "defaultDynFlags: No ghciUsagePath",
556 topDir = panic "defaultDynFlags: No topDir",
557 systemPackageConfig = panic "defaultDynFlags: No systemPackageConfig",
558 pgm_L = panic "defaultDynFlags: No pgm_L",
559 pgm_P = panic "defaultDynFlags: No pgm_P",
560 pgm_F = panic "defaultDynFlags: No pgm_F",
561 pgm_c = panic "defaultDynFlags: No pgm_c",
562 pgm_m = panic "defaultDynFlags: No pgm_m",
563 pgm_s = panic "defaultDynFlags: No pgm_s",
564 pgm_a = panic "defaultDynFlags: No pgm_a",
565 pgm_l = panic "defaultDynFlags: No pgm_l",
566 pgm_dll = panic "defaultDynFlags: No pgm_dll",
567 pgm_T = panic "defaultDynFlags: No pgm_T",
568 pgm_sysman = panic "defaultDynFlags: No pgm_sysman",
569 pgm_windres = panic "defaultDynFlags: No pgm_windres",
570 -- end of initSysTools values
571 haddockOptions = Nothing,
573 Opt_AutoLinkPackages,
574 Opt_ReadUserPackageConf,
576 Opt_MonoPatBinds, -- Experimentally, I'm making this non-standard
577 -- behaviour the default, to see if anyone notices
581 Opt_MonomorphismRestriction,
589 Opt_PrintBindContents
591 ++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
592 -- The default -O0 options
595 log_action = \severity srcSpan style msg ->
597 SevInfo -> hPutStrLn stderr (show (msg style))
598 SevFatal -> hPutStrLn stderr (show (msg style))
599 _ -> hPutStrLn stderr ('\n':show ((mkLocMessage srcSpan msg) style))
605 0 | print errors & warnings only
606 1 | minimal verbosity: print "compiling M ... done." for each module.
607 2 | equivalent to -dshow-passes
608 3 | equivalent to existing "ghc -v"
609 4 | "ghc -v -ddump-most"
610 5 | "ghc -v -ddump-all"
613 dopt :: DynFlag -> DynFlags -> Bool
614 dopt f dflags = f `elem` (flags dflags)
616 dopt_set :: DynFlags -> DynFlag -> DynFlags
617 dopt_set dfs f = dfs{ flags = f : flags dfs }
619 dopt_unset :: DynFlags -> DynFlag -> DynFlags
620 dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
622 getOpts :: DynFlags -> (DynFlags -> [a]) -> [a]
623 getOpts dflags opts = reverse (opts dflags)
624 -- We add to the options from the front, so we need to reverse the list
626 getVerbFlag :: DynFlags -> String
628 | verbosity dflags >= 3 = "-v"
631 setObjectDir, setHiDir, setStubDir, setObjectSuf, setHiSuf, setHcSuf, parseDynLibLoaderMode,
632 setPgmP, setPgmL, setPgmF, setPgmc, setPgmm, setPgms, setPgma, setPgml, setPgmdll, setPgmwindres,
633 addOptL, addOptP, addOptF, addOptc, addOptm, addOpta, addOptl, addOptdep, addOptwindres,
634 addCmdlineFramework, addHaddockOpts
635 :: String -> DynFlags -> DynFlags
636 setOutputFile, setOutputHi, setDumpPrefixForce
637 :: Maybe String -> DynFlags -> DynFlags
639 setObjectDir f d = d{ objectDir = Just f}
640 setHiDir f d = d{ hiDir = Just f}
641 setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
642 -- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
643 -- #included from the .hc file when compiling with -fvia-C.
645 setObjectSuf f d = d{ objectSuf = f}
646 setHiSuf f d = d{ hiSuf = f}
647 setHcSuf f d = d{ hcSuf = f}
649 setOutputFile f d = d{ outputFile = f}
650 setOutputHi f d = d{ outputHi = f}
652 parseDynLibLoaderMode f d =
654 ("deploy", "") -> d{ dynLibLoader = Deployable }
655 ("sysdep", "") -> d{ dynLibLoader = SystemDependent }
656 ("wrapped", "") -> d{ dynLibLoader = Wrapped Nothing }
657 ("wrapped:", "hard") -> d{ dynLibLoader = Wrapped Nothing }
658 ("wrapped:", flex) -> d{ dynLibLoader = Wrapped (Just flex) }
659 (_,_) -> error "Unknown dynlib loader"
661 setDumpPrefixForce f d = d { dumpPrefixForce = f}
663 -- XXX HACK: Prelude> words "'does not' work" ===> ["'does","not'","work"]
664 -- Config.hs should really use Option.
665 setPgmP f d = let (pgm:args) = words f in d{ pgm_P = (pgm, map Option args)}
667 setPgmL f d = d{ pgm_L = f}
668 setPgmF f d = d{ pgm_F = f}
669 setPgmc f d = d{ pgm_c = (f,[])}
670 setPgmm f d = d{ pgm_m = (f,[])}
671 setPgms f d = d{ pgm_s = (f,[])}
672 setPgma f d = d{ pgm_a = (f,[])}
673 setPgml f d = d{ pgm_l = (f,[])}
674 setPgmdll f d = d{ pgm_dll = (f,[])}
675 setPgmwindres f d = d{ pgm_windres = f}
677 addOptL f d = d{ opt_L = f : opt_L d}
678 addOptP f d = d{ opt_P = f : opt_P d}
679 addOptF f d = d{ opt_F = f : opt_F d}
680 addOptc f d = d{ opt_c = f : opt_c d}
681 addOptm f d = d{ opt_m = f : opt_m d}
682 addOpta f d = d{ opt_a = f : opt_a d}
683 addOptl f d = d{ opt_l = f : opt_l d}
684 addOptdep f d = d{ opt_dep = f : opt_dep d}
685 addOptwindres f d = d{ opt_windres = f : opt_windres d}
687 addCmdlineFramework f d = d{ cmdlineFrameworks = f : cmdlineFrameworks d}
689 addHaddockOpts f d = d{ haddockOptions = Just f}
691 -- -----------------------------------------------------------------------------
692 -- Command-line options
694 -- When invoking external tools as part of the compilation pipeline, we
695 -- pass these a sequence of options on the command-line. Rather than
696 -- just using a list of Strings, we use a type that allows us to distinguish
697 -- between filepaths and 'other stuff'. [The reason being, of course, that
698 -- this type gives us a handle on transforming filenames, and filenames only,
699 -- to whatever format they're expected to be on a particular platform.]
702 = FileOption -- an entry that _contains_ filename(s) / filepaths.
703 String -- a non-filepath prefix that shouldn't be
704 -- transformed (e.g., "/out=")
705 String -- the filepath/filename portion
708 -----------------------------------------------------------------------------
709 -- Setting the optimisation level
711 updOptLevel :: Int -> DynFlags -> DynFlags
712 -- Set dynflags appropriate to the optimisation level
714 = dfs2{ optLevel = final_n }
716 final_n = max 0 (min 2 n) -- Clamp to 0 <= n <= 2
717 dfs1 = foldr (flip dopt_unset) dfs remove_dopts
718 dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
720 extra_dopts = [ f | (ns,f) <- optLevelFlags, final_n `elem` ns ]
721 remove_dopts = [ f | (ns,f) <- optLevelFlags, final_n `notElem` ns ]
723 optLevelFlags :: [([Int], DynFlag)]
725 = [ ([0], Opt_IgnoreInterfacePragmas)
726 , ([0], Opt_OmitInterfacePragmas)
728 , ([1,2], Opt_IgnoreAsserts)
729 , ([1,2], Opt_RewriteRules) -- Off for -O0; see Note [Scoping for Builtin rules]
731 , ([1,2], Opt_DoEtaReduction)
732 , ([1,2], Opt_CaseMerge)
733 , ([1,2], Opt_Strictness)
735 , ([1,2], Opt_FullLaziness)
737 , ([2], Opt_LiberateCase)
738 , ([2], Opt_SpecConstr)
739 , ([2], Opt_StaticArgumentTransformation)
741 , ([0,1,2], Opt_DoLambdaEtaExpansion)
742 -- This one is important for a tiresome reason:
743 -- we want to make sure that the bindings for data
744 -- constructors are eta-expanded. This is probably
745 -- a good thing anyway, but it seems fragile.
748 -- -----------------------------------------------------------------------------
749 -- Standard sets of warning options
751 standardWarnings :: [DynFlag]
753 = [ Opt_WarnDeprecations,
754 Opt_WarnDeprecatedFlags,
755 Opt_WarnOverlappingPatterns,
756 Opt_WarnMissingFields,
757 Opt_WarnMissingMethods,
758 Opt_WarnDuplicateExports,
759 Opt_WarnDodgyForeignImports
762 minusWOpts :: [DynFlag]
764 = standardWarnings ++
765 [ Opt_WarnUnusedBinds,
766 Opt_WarnUnusedMatches,
767 Opt_WarnUnusedImports,
768 Opt_WarnIncompletePatterns,
772 minusWallOpts :: [DynFlag]
775 [ Opt_WarnTypeDefaults,
776 Opt_WarnNameShadowing,
782 -- minuswRemovesOpts should be every warning option
783 minuswRemovesOpts :: [DynFlag]
786 [Opt_WarnImplicitPrelude,
787 Opt_WarnIncompletePatternsRecUpd,
788 Opt_WarnSimplePatterns,
789 Opt_WarnMonomorphism,
793 -- -----------------------------------------------------------------------------
794 -- CoreToDo: abstraction of core-to-core passes to run.
796 data CoreToDo -- These are diff core-to-core passes,
797 -- which may be invoked in any order,
798 -- as many times as you like.
800 = CoreDoSimplify -- The core-to-core simplifier.
803 -- Each run of the simplifier can take a different
804 -- set of simplifier-specific flags.
806 | CoreDoFloatOutwards FloatOutSwitches
811 | CoreDoWorkerWrapper
814 | CoreDoOldStrictness
817 | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
818 -- matching this string
819 | CoreDoVectorisation DPHBackend
820 | CoreDoNothing -- Useful when building up
821 | CoreDoPasses [CoreToDo] -- lists of these things
823 data SimplifierMode -- See comments in SimplMonad
825 | SimplPhase Int [String]
827 data SimplifierSwitch
828 = MaxSimplifierIterations Int
831 data FloatOutSwitches
832 = FloatOutSw Bool -- True <=> float lambdas to top level
833 Bool -- True <=> float constants to top level,
834 -- even if they do not escape a lambda
837 -- The core-to-core pass ordering is derived from the DynFlags:
838 runWhen :: Bool -> CoreToDo -> CoreToDo
839 runWhen True do_this = do_this
840 runWhen False _ = CoreDoNothing
842 runMaybe :: Maybe a -> (a -> CoreToDo) -> CoreToDo
843 runMaybe (Just x) f = f x
844 runMaybe Nothing _ = CoreDoNothing
846 getCoreToDo :: DynFlags -> [CoreToDo]
848 | Just todo <- coreToDo dflags = todo -- set explicitly by user
849 | otherwise = core_todo
851 opt_level = optLevel dflags
852 phases = simplPhases dflags
853 max_iter = maxSimplIterations dflags
854 strictness = dopt Opt_Strictness dflags
855 full_laziness = dopt Opt_FullLaziness dflags
856 cse = dopt Opt_CSE dflags
857 spec_constr = dopt Opt_SpecConstr dflags
858 liberate_case = dopt Opt_LiberateCase dflags
859 rule_check = ruleCheck dflags
860 static_args = dopt Opt_StaticArgumentTransformation dflags
862 maybe_rule_check phase = runMaybe rule_check (CoreDoRuleCheck phase)
864 simpl_phase phase names iter
866 [ CoreDoSimplify (SimplPhase phase names) [
867 MaxSimplifierIterations iter
869 maybe_rule_check phase
873 = runWhen (dopt Opt_Vectorise dflags)
874 $ CoreDoPasses [ simpl_gently, CoreDoVectorisation (dphBackend dflags) ]
877 -- By default, we have 2 phases before phase 0.
879 -- Want to run with inline phase 2 after the specialiser to give
880 -- maximum chance for fusion to work before we inline build/augment
881 -- in phase 1. This made a difference in 'ansi' where an
882 -- overloaded function wasn't inlined till too late.
884 -- Need phase 1 so that build/augment get
885 -- inlined. I found that spectral/hartel/genfft lost some useful
886 -- strictness in the function sumcode' if augment is not inlined
887 -- before strictness analysis runs
888 simpl_phases = CoreDoPasses [ simpl_phase phase ["main"] max_iter
889 | phase <- [phases, phases-1 .. 1] ]
892 -- initial simplify: mk specialiser happy: minimum effort please
893 simpl_gently = CoreDoSimplify SimplGently [
895 -- Don't inline anything till full laziness has bitten
896 -- In particular, inlining wrappers inhibits floating
897 -- e.g. ...(case f x of ...)...
898 -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
899 -- ==> ...(case x of I# x# -> case fw x# of ...)...
900 -- and now the redex (f x) isn't floatable any more
901 -- Similarly, don't apply any rules until after full
902 -- laziness. Notably, list fusion can prevent floating.
904 NoCaseOfCase, -- Don't do case-of-case transformations.
905 -- This makes full laziness work better
906 MaxSimplifierIterations max_iter
910 if opt_level == 0 then
912 simpl_phase 0 ["final"] max_iter]
913 else {- opt_level >= 1 -} [
915 -- We want to do the static argument transform before full laziness as it
916 -- may expose extra opportunities to float things outwards. However, to fix
917 -- up the output of the transformation we need at do at least one simplify
918 -- after this before anything else
919 runWhen static_args (CoreDoPasses [ simpl_gently, CoreDoStaticArgs ]),
921 -- We run vectorisation here for now, but we might also try to run
925 -- initial simplify: mk specialiser happy: minimum effort please
928 -- Specialisation is best done before full laziness
929 -- so that overloaded functions have all their dictionary lambdas manifest
932 runWhen full_laziness (CoreDoFloatOutwards (FloatOutSw False False)),
938 -- Phase 0: allow all Ids to be inlined now
939 -- This gets foldr inlined before strictness analysis
941 -- At least 3 iterations because otherwise we land up with
942 -- huge dead expressions because of an infelicity in the
944 -- let k = BIG in foldr k z xs
945 -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
946 -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
948 simpl_phase 0 ["main"] (max max_iter 3),
951 #ifdef OLD_STRICTNESS
954 runWhen strictness (CoreDoPasses [
958 simpl_phase 0 ["post-worker-wrapper"] max_iter
961 runWhen full_laziness
962 (CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
963 True)), -- Float constants
964 -- nofib/spectral/hartel/wang doubles in speed if you
965 -- do full laziness late in the day. It only happens
966 -- after fusion and other stuff, so the early pass doesn't
967 -- catch it. For the record, the redex is
968 -- f_el22 (f_el21 r_midblock)
972 -- We want CSE to follow the final full-laziness pass, because it may
973 -- succeed in commoning up things floated out by full laziness.
974 -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
980 -- Case-liberation for -O2. This should be after
981 -- strictness analysis and the simplification which follows it.
982 runWhen liberate_case (CoreDoPasses [
984 simpl_phase 0 ["post-liberate-case"] max_iter
985 ]), -- Run the simplifier after LiberateCase to vastly
986 -- reduce the possiblility of shadowing
987 -- Reason: see Note [Shadowing] in SpecConstr.lhs
989 runWhen spec_constr CoreDoSpecConstr,
993 -- Final clean-up simplification:
994 simpl_phase 0 ["final"] max_iter
997 -- -----------------------------------------------------------------------------
998 -- StgToDo: abstraction of stg-to-stg passes to run.
1001 = StgDoMassageForProfiling -- should be (next to) last
1002 -- There's also setStgVarInfo, but its absolute "lastness"
1003 -- is so critical that it is hardwired in (no flag).
1006 getStgToDo :: DynFlags -> [StgToDo]
1008 | Just todo <- stgToDo dflags = todo -- set explicitly by user
1011 stg_stats = dopt Opt_StgStats dflags
1013 todo1 = if stg_stats then [D_stg_stats] else []
1015 todo2 | WayProf `elem` wayNames dflags
1016 = StgDoMassageForProfiling : todo1
1020 -- -----------------------------------------------------------------------------
1023 allFlags :: [String]
1024 allFlags = map ('-':) $
1025 [ flagName flag | flag <- dynamic_flags, ok (flagOptKind flag) ] ++
1026 map ("fno-"++) flags ++
1027 map ("f"++) flags ++
1028 map ("X"++) supportedLanguages ++
1029 map ("XNo"++) supportedLanguages
1030 where ok (PrefixPred _ _) = False
1032 flags = [ name | (name, _, _) <- fFlags ]
1034 dynamic_flags :: [Flag DynP]
1036 Flag "n" (NoArg (setDynFlag Opt_DryRun)) Supported
1037 , Flag "cpp" (NoArg (setDynFlag Opt_Cpp)) Supported
1038 , Flag "F" (NoArg (setDynFlag Opt_Pp)) Supported
1039 , Flag "#include" (HasArg (addCmdlineHCInclude)) Supported
1040 , Flag "v" (OptIntSuffix setVerbosity) Supported
1042 ------- Specific phases --------------------------------------------
1043 , Flag "pgmL" (HasArg (upd . setPgmL)) Supported
1044 , Flag "pgmP" (HasArg (upd . setPgmP)) Supported
1045 , Flag "pgmF" (HasArg (upd . setPgmF)) Supported
1046 , Flag "pgmc" (HasArg (upd . setPgmc)) Supported
1047 , Flag "pgmm" (HasArg (upd . setPgmm)) Supported
1048 , Flag "pgms" (HasArg (upd . setPgms)) Supported
1049 , Flag "pgma" (HasArg (upd . setPgma)) Supported
1050 , Flag "pgml" (HasArg (upd . setPgml)) Supported
1051 , Flag "pgmdll" (HasArg (upd . setPgmdll)) Supported
1052 , Flag "pgmwindres" (HasArg (upd . setPgmwindres)) Supported
1054 , Flag "optL" (HasArg (upd . addOptL)) Supported
1055 , Flag "optP" (HasArg (upd . addOptP)) Supported
1056 , Flag "optF" (HasArg (upd . addOptF)) Supported
1057 , Flag "optc" (HasArg (upd . addOptc)) Supported
1058 , Flag "optm" (HasArg (upd . addOptm)) Supported
1059 , Flag "opta" (HasArg (upd . addOpta)) Supported
1060 , Flag "optl" (HasArg (upd . addOptl)) Supported
1061 , Flag "optdep" (HasArg (upd . addOptdep)) Supported
1062 , Flag "optwindres" (HasArg (upd . addOptwindres)) Supported
1065 (NoArg (if can_split then setDynFlag Opt_SplitObjs else return ()))
1068 -------- Linking ----------------------------------------------------
1069 , Flag "c" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1071 , Flag "no-link" (NoArg (upd $ \d -> d{ ghcLink=NoLink } ))
1072 (Deprecated "Use -c instead")
1073 , Flag "shared" (NoArg (upd $ \d -> d{ ghcLink=LinkDynLib } ))
1075 , Flag "dynload" (HasArg (upd . parseDynLibLoaderMode))
1078 ------- Libraries ---------------------------------------------------
1079 , Flag "L" (Prefix addLibraryPath ) Supported
1080 , Flag "l" (AnySuffix (\s -> do upd (addOptl s))) Supported
1082 ------- Frameworks --------------------------------------------------
1083 -- -framework-path should really be -F ...
1084 , Flag "framework-path" (HasArg addFrameworkPath ) Supported
1085 , Flag "framework" (HasArg (upd . addCmdlineFramework)) Supported
1087 ------- Output Redirection ------------------------------------------
1088 , Flag "odir" (HasArg (upd . setObjectDir)) Supported
1089 , Flag "o" (SepArg (upd . setOutputFile . Just)) Supported
1090 , Flag "ohi" (HasArg (upd . setOutputHi . Just )) Supported
1091 , Flag "osuf" (HasArg (upd . setObjectSuf)) Supported
1092 , Flag "hcsuf" (HasArg (upd . setHcSuf)) Supported
1093 , Flag "hisuf" (HasArg (upd . setHiSuf)) Supported
1094 , Flag "hidir" (HasArg (upd . setHiDir)) Supported
1095 , Flag "tmpdir" (HasArg (upd . setTmpDir)) Supported
1096 , Flag "stubdir" (HasArg (upd . setStubDir)) Supported
1097 , Flag "ddump-file-prefix" (HasArg (upd . setDumpPrefixForce . Just))
1100 ------- Keeping temporary files -------------------------------------
1101 -- These can be singular (think ghc -c) or plural (think ghc --make)
1102 , Flag "keep-hc-file" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1103 , Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles)) Supported
1104 , Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1105 , Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles)) Supported
1106 , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1107 , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles)) Supported
1108 -- This only makes sense as plural
1109 , Flag "keep-tmp-files" (NoArg (setDynFlag Opt_KeepTmpFiles)) Supported
1111 ------- Miscellaneous ----------------------------------------------
1112 , Flag "no-auto-link-packages" (NoArg (unSetDynFlag Opt_AutoLinkPackages)) Supported
1113 , Flag "no-hs-main" (NoArg (setDynFlag Opt_NoHsMain)) Supported
1114 , Flag "main-is" (SepArg setMainIs ) Supported
1115 , Flag "haddock" (NoArg (setDynFlag Opt_Haddock)) Supported
1116 , Flag "haddock-opts" (HasArg (upd . addHaddockOpts)) Supported
1117 , Flag "hpcdir" (SepArg setOptHpcDir) Supported
1119 ------- recompilation checker --------------------------------------
1120 , Flag "recomp" (NoArg (unSetDynFlag Opt_ForceRecomp))
1121 (Deprecated "Use -fno-force-recomp instead")
1122 , Flag "no-recomp" (NoArg (setDynFlag Opt_ForceRecomp))
1123 (Deprecated "Use -fforce-recomp instead")
1125 ------- Packages ----------------------------------------------------
1126 , Flag "package-conf" (HasArg extraPkgConf_) Supported
1127 , Flag "no-user-package-conf" (NoArg (unSetDynFlag Opt_ReadUserPackageConf))
1129 , Flag "package-name" (HasArg (upd . setPackageName)) Supported
1130 , Flag "package" (HasArg exposePackage) Supported
1131 , Flag "hide-package" (HasArg hidePackage) Supported
1132 , Flag "hide-all-packages" (NoArg (setDynFlag Opt_HideAllPackages))
1134 , Flag "ignore-package" (HasArg ignorePackage)
1136 , Flag "syslib" (HasArg exposePackage)
1137 (Deprecated "Use -package instead")
1139 ------ HsCpp opts ---------------------------------------------------
1140 , Flag "D" (AnySuffix (upd . addOptP)) Supported
1141 , Flag "U" (AnySuffix (upd . addOptP)) Supported
1143 ------- Include/Import Paths ----------------------------------------
1144 , Flag "I" (Prefix addIncludePath) Supported
1145 , Flag "i" (OptPrefix addImportPath ) Supported
1147 ------ Debugging ----------------------------------------------------
1148 , Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats)) Supported
1150 , Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
1152 , Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
1154 , Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
1156 , Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
1158 , Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
1160 , Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
1162 , Flag "ddump-asm-native" (setDumpFlag Opt_D_dump_asm_native)
1164 , Flag "ddump-asm-liveness" (setDumpFlag Opt_D_dump_asm_liveness)
1166 , Flag "ddump-asm-coalesce" (setDumpFlag Opt_D_dump_asm_coalesce)
1168 , Flag "ddump-asm-regalloc" (setDumpFlag Opt_D_dump_asm_regalloc)
1170 , Flag "ddump-asm-conflicts" (setDumpFlag Opt_D_dump_asm_conflicts)
1172 , Flag "ddump-asm-regalloc-stages"
1173 (setDumpFlag Opt_D_dump_asm_regalloc_stages)
1175 , Flag "ddump-asm-stats" (setDumpFlag Opt_D_dump_asm_stats)
1177 , Flag "ddump-cpranal" (setDumpFlag Opt_D_dump_cpranal)
1179 , Flag "ddump-deriv" (setDumpFlag Opt_D_dump_deriv)
1181 , Flag "ddump-ds" (setDumpFlag Opt_D_dump_ds)
1183 , Flag "ddump-flatC" (setDumpFlag Opt_D_dump_flatC)
1185 , Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
1187 , Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
1189 , Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
1191 , Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
1193 , Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
1195 , Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
1197 , Flag "ddump-simpl" (setDumpFlag Opt_D_dump_simpl)
1199 , Flag "ddump-simpl-iterations" (setDumpFlag Opt_D_dump_simpl_iterations)
1201 , Flag "ddump-simpl-phases" (OptPrefix setDumpSimplPhases)
1203 , Flag "ddump-spec" (setDumpFlag Opt_D_dump_spec)
1205 , Flag "ddump-prep" (setDumpFlag Opt_D_dump_prep)
1207 , Flag "ddump-stg" (setDumpFlag Opt_D_dump_stg)
1209 , Flag "ddump-stranal" (setDumpFlag Opt_D_dump_stranal)
1211 , Flag "ddump-tc" (setDumpFlag Opt_D_dump_tc)
1213 , Flag "ddump-types" (setDumpFlag Opt_D_dump_types)
1215 , Flag "ddump-rules" (setDumpFlag Opt_D_dump_rules)
1217 , Flag "ddump-cse" (setDumpFlag Opt_D_dump_cse)
1219 , Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
1221 , Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
1223 , Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
1225 , Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
1227 , Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
1229 , Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
1231 , Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
1233 , Flag "ddump-simpl-stats" (setDumpFlag Opt_D_dump_simpl_stats)
1235 , Flag "ddump-bcos" (setDumpFlag Opt_D_dump_BCOs)
1237 , Flag "dsource-stats" (setDumpFlag Opt_D_source_stats)
1239 , Flag "dverbose-core2core" (NoArg setVerboseCore2Core)
1241 , Flag "dverbose-stg2stg" (setDumpFlag Opt_D_verbose_stg2stg)
1243 , Flag "ddump-hi" (setDumpFlag Opt_D_dump_hi)
1245 , Flag "ddump-minimal-imports" (setDumpFlag Opt_D_dump_minimal_imports)
1247 , Flag "ddump-vect" (setDumpFlag Opt_D_dump_vect)
1249 , Flag "ddump-hpc" (setDumpFlag Opt_D_dump_hpc)
1251 , Flag "ddump-mod-cycles" (setDumpFlag Opt_D_dump_mod_cycles)
1253 , Flag "ddump-view-pattern-commoning" (setDumpFlag Opt_D_dump_view_pattern_commoning)
1255 , Flag "ddump-to-file" (setDumpFlag Opt_DumpToFile)
1257 , Flag "ddump-hi-diffs" (setDumpFlag Opt_D_dump_hi_diffs)
1260 , Flag "dcore-lint" (NoArg (setDynFlag Opt_DoCoreLinting))
1262 , Flag "dstg-lint" (NoArg (setDynFlag Opt_DoStgLinting))
1264 , Flag "dcmm-lint" (NoArg (setDynFlag Opt_DoCmmLinting))
1266 , Flag "dasm-lint" (NoArg (setDynFlag Opt_DoAsmLinting))
1268 , Flag "dshow-passes"
1269 (NoArg (do setDynFlag Opt_ForceRecomp
1270 setVerbosity (Just 2)))
1272 , Flag "dfaststring-stats" (NoArg (setDynFlag Opt_D_faststring_stats))
1275 ------ Machine dependant (-m<blah>) stuff ---------------------------
1277 , Flag "monly-2-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 2}) ))
1279 , Flag "monly-3-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 3}) ))
1281 , Flag "monly-4-regs" (NoArg (upd (\s -> s{stolen_x86_regs = 4}) ))
1284 ------ Warning opts -------------------------------------------------
1285 , Flag "W" (NoArg (mapM_ setDynFlag minusWOpts))
1287 , Flag "Werror" (NoArg (setDynFlag Opt_WarnIsError))
1289 , Flag "Wwarn" (NoArg (unSetDynFlag Opt_WarnIsError))
1291 , Flag "Wall" (NoArg (mapM_ setDynFlag minusWallOpts))
1293 , Flag "Wnot" (NoArg (mapM_ unSetDynFlag minusWallOpts))
1294 (Deprecated "Use -w instead")
1295 , Flag "w" (NoArg (mapM_ unSetDynFlag minuswRemovesOpts))
1298 ------ Optimisation flags ------------------------------------------
1299 , Flag "O" (NoArg (upd (setOptLevel 1))) Supported
1300 , Flag "Onot" (NoArg (upd (setOptLevel 0)))
1301 (Deprecated "Use -O0 instead")
1302 , Flag "Odph" (NoArg (upd setDPHOpt)) Supported
1303 , Flag "O" (OptIntSuffix (\mb_n -> upd (setOptLevel (mb_n `orElse` 1))))
1305 -- If the number is missing, use 1
1307 , Flag "fsimplifier-phases"
1308 (IntSuffix (\n -> upd (\dfs -> dfs{ simplPhases = n })))
1310 , Flag "fmax-simplifier-iterations"
1311 (IntSuffix (\n -> upd (\dfs -> dfs{ maxSimplIterations = n })))
1314 , Flag "fspec-constr-threshold"
1315 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrThreshold = Just n })))
1317 , Flag "fno-spec-constr-threshold"
1318 (NoArg (upd (\dfs -> dfs{ specConstrThreshold = Nothing })))
1320 , Flag "fspec-constr-count"
1321 (IntSuffix (\n -> upd (\dfs -> dfs{ specConstrCount = Just n })))
1323 , Flag "fno-spec-constr-count"
1324 (NoArg (upd (\dfs -> dfs{ specConstrCount = Nothing })))
1326 , Flag "fliberate-case-threshold"
1327 (IntSuffix (\n -> upd (\dfs -> dfs{ liberateCaseThreshold = Just n })))
1329 , Flag "fno-liberate-case-threshold"
1330 (NoArg (upd (\dfs -> dfs{ liberateCaseThreshold = Nothing })))
1333 , Flag "frule-check"
1334 (SepArg (\s -> upd (\dfs -> dfs{ ruleCheck = Just s })))
1336 , Flag "fcontext-stack"
1337 (IntSuffix $ \n -> upd $ \dfs -> dfs{ ctxtStkDepth = n })
1340 ------ DPH flags ----------------------------------------------------
1343 (NoArg (upd (setDPHBackend DPHSeq)))
1346 (NoArg (upd (setDPHBackend DPHPar)))
1349 ------ Compiler flags -----------------------------------------------
1351 , Flag "fasm" (NoArg (setObjTarget HscAsm)) Supported
1352 , Flag "fvia-c" (NoArg (setObjTarget HscC)) Supported
1353 , Flag "fvia-C" (NoArg (setObjTarget HscC)) Supported
1355 , Flag "fno-code" (NoArg (setTarget HscNothing)) Supported
1356 , Flag "fbyte-code" (NoArg (setTarget HscInterpreted)) Supported
1357 , Flag "fobject-code" (NoArg (setTarget defaultHscTarget)) Supported
1359 , Flag "fglasgow-exts" (NoArg (mapM_ setDynFlag glasgowExtsFlags))
1361 , Flag "fno-glasgow-exts" (NoArg (mapM_ unSetDynFlag glasgowExtsFlags))
1364 ++ map (mkFlag True "f" setDynFlag ) fFlags
1365 ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
1366 ++ map (mkFlag True "X" setDynFlag ) xFlags
1367 ++ map (mkFlag False "XNo" unSetDynFlag) xFlags
1369 mkFlag :: Bool -- True => turn it on, False => turn it off
1371 -> (DynFlag -> DynP ())
1372 -> (String, DynFlag, Bool -> Deprecated)
1374 mkFlag turnOn flagPrefix f (name, dynflag, deprecated)
1375 = Flag (flagPrefix ++ name) (NoArg (f dynflag)) (deprecated turnOn)
1377 deprecatedForLanguage :: String -> Bool -> Deprecated
1378 deprecatedForLanguage lang turnOn =
1379 Deprecated ("Use the " ++ prefix ++ lang ++ " language instead")
1380 where prefix = if turnOn then "" else "No"
1382 -- these -f<blah> flags can all be reversed with -fno-<blah>
1384 fFlags :: [(String, DynFlag, Bool -> Deprecated)]
1386 ( "warn-dodgy-foreign-imports", Opt_WarnDodgyForeignImports, const Supported ),
1387 ( "warn-dodgy-imports", Opt_WarnDodgyImports, const Supported ),
1388 ( "warn-duplicate-exports", Opt_WarnDuplicateExports, const Supported ),
1389 ( "warn-hi-shadowing", Opt_WarnHiShadows, const Supported ),
1390 ( "warn-implicit-prelude", Opt_WarnImplicitPrelude, const Supported ),
1391 ( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, const Supported ),
1392 ( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, const Supported ),
1393 ( "warn-missing-fields", Opt_WarnMissingFields, const Supported ),
1394 ( "warn-missing-methods", Opt_WarnMissingMethods, const Supported ),
1395 ( "warn-missing-signatures", Opt_WarnMissingSigs, const Supported ),
1396 ( "warn-name-shadowing", Opt_WarnNameShadowing, const Supported ),
1397 ( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, const Supported ),
1398 ( "warn-simple-patterns", Opt_WarnSimplePatterns, const Supported ),
1399 ( "warn-type-defaults", Opt_WarnTypeDefaults, const Supported ),
1400 ( "warn-monomorphism-restriction", Opt_WarnMonomorphism, const Supported ),
1401 ( "warn-unused-binds", Opt_WarnUnusedBinds, const Supported ),
1402 ( "warn-unused-imports", Opt_WarnUnusedImports, const Supported ),
1403 ( "warn-unused-matches", Opt_WarnUnusedMatches, const Supported ),
1404 ( "warn-deprecations", Opt_WarnDeprecations, const Supported ),
1405 ( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, const Supported ),
1406 ( "warn-orphans", Opt_WarnOrphans, const Supported ),
1407 ( "warn-tabs", Opt_WarnTabs, const Supported ),
1408 ( "print-explicit-foralls", Opt_PrintExplicitForalls, const Supported ),
1409 ( "strictness", Opt_Strictness, const Supported ),
1410 ( "static-argument-transformation", Opt_StaticArgumentTransformation, const Supported ),
1411 ( "full-laziness", Opt_FullLaziness, const Supported ),
1412 ( "liberate-case", Opt_LiberateCase, const Supported ),
1413 ( "spec-constr", Opt_SpecConstr, const Supported ),
1414 ( "cse", Opt_CSE, const Supported ),
1415 ( "ignore-interface-pragmas", Opt_IgnoreInterfacePragmas, const Supported ),
1416 ( "omit-interface-pragmas", Opt_OmitInterfacePragmas, const Supported ),
1417 ( "do-lambda-eta-expansion", Opt_DoLambdaEtaExpansion, const Supported ),
1418 ( "ignore-asserts", Opt_IgnoreAsserts, const Supported ),
1419 ( "do-eta-reduction", Opt_DoEtaReduction, const Supported ),
1420 ( "case-merge", Opt_CaseMerge, const Supported ),
1421 ( "unbox-strict-fields", Opt_UnboxStrictFields, const Supported ),
1422 ( "method-sharing", Opt_MethodSharing, const Supported ),
1423 ( "dicts-cheap", Opt_DictsCheap, const Supported ),
1424 ( "excess-precision", Opt_ExcessPrecision, const Supported ),
1425 ( "asm-mangling", Opt_DoAsmMangling, const Supported ),
1426 ( "print-bind-result", Opt_PrintBindResult, const Supported ),
1427 ( "force-recomp", Opt_ForceRecomp, const Supported ),
1428 ( "hpc-no-auto", Opt_Hpc_No_Auto, const Supported ),
1429 ( "rewrite-rules", Opt_RewriteRules, const Supported ),
1430 ( "break-on-exception", Opt_BreakOnException, const Supported ),
1431 ( "break-on-error", Opt_BreakOnError, const Supported ),
1432 ( "print-evld-with-show", Opt_PrintEvldWithShow, const Supported ),
1433 ( "print-bind-contents", Opt_PrintBindContents, const Supported ),
1434 ( "run-cps", Opt_RunCPSZ, const Supported ),
1435 ( "convert-to-zipper-and-back", Opt_ConvertToZipCfgAndBack, const Supported ),
1436 ( "vectorise", Opt_Vectorise, const Supported ),
1437 ( "regs-graph", Opt_RegsGraph, const Supported ),
1438 ( "regs-iterative", Opt_RegsIterative, const Supported ),
1439 ( "th", Opt_TemplateHaskell,
1440 deprecatedForLanguage "TemplateHaskell" ),
1441 ( "fi", Opt_ForeignFunctionInterface,
1442 deprecatedForLanguage "ForeignFunctionInterface" ),
1443 ( "ffi", Opt_ForeignFunctionInterface,
1444 deprecatedForLanguage "ForeignFunctionInterface" ),
1445 ( "arrows", Opt_Arrows,
1446 deprecatedForLanguage "Arrows" ),
1447 ( "generics", Opt_Generics,
1448 deprecatedForLanguage "Generics" ),
1449 ( "implicit-prelude", Opt_ImplicitPrelude,
1450 deprecatedForLanguage "ImplicitPrelude" ),
1451 ( "bang-patterns", Opt_BangPatterns,
1452 deprecatedForLanguage "BangPatterns" ),
1453 ( "monomorphism-restriction", Opt_MonomorphismRestriction,
1454 deprecatedForLanguage "MonomorphismRestriction" ),
1455 ( "mono-pat-binds", Opt_MonoPatBinds,
1456 deprecatedForLanguage "MonoPatBinds" ),
1457 ( "extended-default-rules", Opt_ExtendedDefaultRules,
1458 deprecatedForLanguage "ExtendedDefaultRules" ),
1459 ( "implicit-params", Opt_ImplicitParams,
1460 deprecatedForLanguage "ImplicitParams" ),
1461 ( "scoped-type-variables", Opt_ScopedTypeVariables,
1462 deprecatedForLanguage "ScopedTypeVariables" ),
1464 deprecatedForLanguage "PArr" ),
1465 ( "allow-overlapping-instances", Opt_OverlappingInstances,
1466 deprecatedForLanguage "OverlappingInstances" ),
1467 ( "allow-undecidable-instances", Opt_UndecidableInstances,
1468 deprecatedForLanguage "UndecidableInstances" ),
1469 ( "allow-incoherent-instances", Opt_IncoherentInstances,
1470 deprecatedForLanguage "IncoherentInstances" ),
1471 ( "gen-manifest", Opt_GenManifest, const Supported ),
1472 ( "embed-manifest", Opt_EmbedManifest, const Supported )
1475 supportedLanguages :: [String]
1476 supportedLanguages = [ name | (name, _, _) <- xFlags ]
1478 -- This may contain duplicates
1479 languageOptions :: [DynFlag]
1480 languageOptions = [ dynFlag | (_, dynFlag, _) <- xFlags ]
1482 -- These -X<blah> flags can all be reversed with -XNo<blah>
1483 xFlags :: [(String, DynFlag, Bool -> Deprecated)]
1485 ( "CPP", Opt_Cpp, const Supported ),
1486 ( "PatternGuards", Opt_PatternGuards, const Supported ),
1487 ( "UnicodeSyntax", Opt_UnicodeSyntax, const Supported ),
1488 ( "MagicHash", Opt_MagicHash, const Supported ),
1489 ( "PolymorphicComponents", Opt_PolymorphicComponents, const Supported ),
1490 ( "ExistentialQuantification", Opt_ExistentialQuantification, const Supported ),
1491 ( "KindSignatures", Opt_KindSignatures, const Supported ),
1492 ( "PatternSignatures", Opt_PatternSignatures, const Supported ),
1493 ( "EmptyDataDecls", Opt_EmptyDataDecls, const Supported ),
1494 ( "ParallelListComp", Opt_ParallelListComp, const Supported ),
1495 ( "TransformListComp", Opt_TransformListComp, const Supported ),
1496 ( "ForeignFunctionInterface", Opt_ForeignFunctionInterface, const Supported ),
1497 ( "UnliftedFFITypes", Opt_UnliftedFFITypes, const Supported ),
1498 ( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, const Supported ),
1499 ( "Rank2Types", Opt_Rank2Types, const Supported ),
1500 ( "RankNTypes", Opt_RankNTypes, const Supported ),
1501 ( "ImpredicativeTypes", Opt_ImpredicativeTypes, const Supported ),
1502 ( "TypeOperators", Opt_TypeOperators, const Supported ),
1503 ( "RecursiveDo", Opt_RecursiveDo, const Supported ),
1504 ( "Arrows", Opt_Arrows, const Supported ),
1505 ( "PArr", Opt_PArr, const Supported ),
1506 ( "TemplateHaskell", Opt_TemplateHaskell, const Supported ),
1507 ( "QuasiQuotes", Opt_QuasiQuotes, const Supported ),
1508 ( "Generics", Opt_Generics, const Supported ),
1510 ( "ImplicitPrelude", Opt_ImplicitPrelude, const Supported ),
1511 ( "RecordWildCards", Opt_RecordWildCards, const Supported ),
1512 ( "NamedFieldPuns", Opt_RecordPuns, const Supported ),
1513 ( "RecordPuns", Opt_RecordPuns,
1514 deprecatedForLanguage "NamedFieldPuns" ),
1515 ( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, const Supported ),
1516 ( "OverloadedStrings", Opt_OverloadedStrings, const Supported ),
1517 ( "GADTs", Opt_GADTs, const Supported ),
1518 ( "ViewPatterns", Opt_ViewPatterns, const Supported ),
1519 ( "TypeFamilies", Opt_TypeFamilies, const Supported ),
1520 ( "BangPatterns", Opt_BangPatterns, const Supported ),
1522 ( "MonomorphismRestriction", Opt_MonomorphismRestriction, const Supported ),
1523 -- On by default (which is not strictly H98):
1524 ( "MonoPatBinds", Opt_MonoPatBinds, const Supported ),
1525 ( "RelaxedPolyRec", Opt_RelaxedPolyRec, const Supported ),
1526 ( "ExtendedDefaultRules", Opt_ExtendedDefaultRules, const Supported ),
1527 ( "ImplicitParams", Opt_ImplicitParams, const Supported ),
1528 ( "ScopedTypeVariables", Opt_ScopedTypeVariables, const Supported ),
1529 ( "UnboxedTuples", Opt_UnboxedTuples, const Supported ),
1530 ( "StandaloneDeriving", Opt_StandaloneDeriving, const Supported ),
1531 ( "DeriveDataTypeable", Opt_DeriveDataTypeable, const Supported ),
1532 ( "TypeSynonymInstances", Opt_TypeSynonymInstances, const Supported ),
1533 ( "FlexibleContexts", Opt_FlexibleContexts, const Supported ),
1534 ( "FlexibleInstances", Opt_FlexibleInstances, const Supported ),
1535 ( "ConstrainedClassMethods", Opt_ConstrainedClassMethods, const Supported ),
1536 ( "MultiParamTypeClasses", Opt_MultiParamTypeClasses, const Supported ),
1537 ( "FunctionalDependencies", Opt_FunctionalDependencies, const Supported ),
1538 ( "GeneralizedNewtypeDeriving", Opt_GeneralizedNewtypeDeriving, const Supported ),
1539 ( "OverlappingInstances", Opt_OverlappingInstances, const Supported ),
1540 ( "UndecidableInstances", Opt_UndecidableInstances, const Supported ),
1541 ( "IncoherentInstances", Opt_IncoherentInstances, const Supported )
1544 impliedFlags :: [(DynFlag, [DynFlag])]
1546 ( Opt_GADTs, [Opt_RelaxedPolyRec] ) -- We want type-sig variables to
1547 -- be completely rigid for GADTs
1548 , ( Opt_ScopedTypeVariables, [Opt_RelaxedPolyRec] ) -- Ditto for scoped type variables; see
1549 -- Note [Scoped tyvars] in TcBinds
1552 glasgowExtsFlags :: [DynFlag]
1553 glasgowExtsFlags = [
1554 Opt_PrintExplicitForalls
1555 , Opt_ForeignFunctionInterface
1556 , Opt_UnliftedFFITypes
1558 , Opt_ImplicitParams
1559 , Opt_ScopedTypeVariables
1561 , Opt_TypeSynonymInstances
1562 , Opt_StandaloneDeriving
1563 , Opt_DeriveDataTypeable
1564 , Opt_FlexibleContexts
1565 , Opt_FlexibleInstances
1566 , Opt_ConstrainedClassMethods
1567 , Opt_MultiParamTypeClasses
1568 , Opt_FunctionalDependencies
1570 , Opt_PolymorphicComponents
1571 , Opt_ExistentialQuantification
1574 , Opt_LiberalTypeSynonyms
1576 , Opt_ImpredicativeTypes
1579 , Opt_ParallelListComp
1580 , Opt_EmptyDataDecls
1581 , Opt_KindSignatures
1582 , Opt_PatternSignatures
1583 , Opt_GeneralizedNewtypeDeriving
1584 , Opt_TypeFamilies ]
1586 -- -----------------------------------------------------------------------------
1587 -- Parsing the dynamic flags.
1589 parseDynamicFlags :: DynFlags -> [String] -> IO (DynFlags, [String], [String])
1590 parseDynamicFlags dflags args = do
1591 let ((leftover, errs, warns), dflags')
1592 = runCmdLine (processArgs dynamic_flags args) dflags
1593 when (not (null errs)) $ do
1594 throwDyn (UsageError (unlines errs))
1595 return (dflags', leftover, warns)
1597 type DynP = CmdLineP DynFlags
1599 upd :: (DynFlags -> DynFlags) -> DynP ()
1601 dfs <- getCmdLineState
1602 putCmdLineState $! (f dfs)
1604 --------------------------
1605 setDynFlag, unSetDynFlag :: DynFlag -> DynP ()
1606 setDynFlag f = upd (\dfs -> foldl dopt_set (dopt_set dfs f) deps)
1608 deps = [ d | (f', ds) <- impliedFlags, f' == f, d <- ds ]
1609 -- When you set f, set the ones it implies
1610 -- When you un-set f, however, we don't un-set the things it implies
1611 -- (except for -fno-glasgow-exts, which is treated specially)
1613 unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
1615 --------------------------
1616 setDumpFlag :: DynFlag -> OptKind DynP
1617 setDumpFlag dump_flag
1618 | force_recomp = NoArg (setDynFlag Opt_ForceRecomp >> setDynFlag dump_flag)
1619 | otherwise = NoArg (setDynFlag dump_flag)
1621 -- Whenver we -ddump, switch off the recompilation checker,
1622 -- else you don't see the dump!
1623 -- However, certain dumpy-things are really interested in what's going
1624 -- on during recompilation checking, so in those cases we
1625 -- don't want to turn it off.
1626 force_recomp = dump_flag `notElem` [Opt_D_dump_if_trace,
1627 Opt_D_dump_hi_diffs]
1629 setVerboseCore2Core :: DynP ()
1630 setVerboseCore2Core = do setDynFlag Opt_ForceRecomp
1631 setDynFlag Opt_D_verbose_core2core
1632 upd (\s -> s { shouldDumpSimplPhase = const True })
1634 setDumpSimplPhases :: String -> DynP ()
1635 setDumpSimplPhases s = do setDynFlag Opt_ForceRecomp
1636 upd (\s -> s { shouldDumpSimplPhase = spec })
1638 spec :: SimplifierMode -> Bool
1640 . map (join (&&) . map match . split ':')
1646 join :: (Bool -> Bool -> Bool)
1647 -> [SimplifierMode -> Bool]
1648 -> SimplifierMode -> Bool
1649 join _ [] = const True
1650 join op ss = foldr1 (\f g x -> f x `op` g x) ss
1652 match :: String -> SimplifierMode -> Bool
1653 match "" = const True
1654 match s = case reads s of
1655 [(n,"")] -> phase_num n
1658 phase_num :: Int -> SimplifierMode -> Bool
1659 phase_num n (SimplPhase k _) = n == k
1660 phase_num _ _ = False
1662 phase_name :: String -> SimplifierMode -> Bool
1663 phase_name s SimplGently = s == "gentle"
1664 phase_name s (SimplPhase _ ss) = s `elem` ss
1666 setVerbosity :: Maybe Int -> DynP ()
1667 setVerbosity mb_n = upd (\dfs -> dfs{ verbosity = mb_n `orElse` 3 })
1669 addCmdlineHCInclude :: String -> DynP ()
1670 addCmdlineHCInclude a = upd (\s -> s{cmdlineHcIncludes = a : cmdlineHcIncludes s})
1672 extraPkgConf_ :: FilePath -> DynP ()
1673 extraPkgConf_ p = upd (\s -> s{ extraPkgConfs = p : extraPkgConfs s })
1675 exposePackage, hidePackage, ignorePackage :: String -> DynP ()
1677 upd (\s -> s{ packageFlags = ExposePackage p : packageFlags s })
1679 upd (\s -> s{ packageFlags = HidePackage p : packageFlags s })
1681 upd (\s -> s{ packageFlags = IgnorePackage p : packageFlags s })
1683 setPackageName :: String -> DynFlags -> DynFlags
1685 | Nothing <- unpackPackageId pid
1686 = throwDyn (CmdLineError ("cannot parse \'" ++ p ++ "\' as a package identifier"))
1688 = \s -> s{ thisPackage = pid }
1690 pid = stringToPackageId p
1692 -- If we're linking a binary, then only targets that produce object
1693 -- code are allowed (requests for other target types are ignored).
1694 setTarget :: HscTarget -> DynP ()
1695 setTarget l = upd set
1698 | ghcLink dfs /= LinkBinary || isObjectTarget l = dfs{ hscTarget = l }
1701 -- Changes the target only if we're compiling object code. This is
1702 -- used by -fasm and -fvia-C, which switch from one to the other, but
1703 -- not from bytecode to object-code. The idea is that -fasm/-fvia-C
1704 -- can be safely used in an OPTIONS_GHC pragma.
1705 setObjTarget :: HscTarget -> DynP ()
1706 setObjTarget l = upd set
1709 | isObjectTarget (hscTarget dfs) = dfs { hscTarget = l }
1712 setOptLevel :: Int -> DynFlags -> DynFlags
1713 setOptLevel n dflags
1714 | hscTarget dflags == HscInterpreted && n > 0
1716 -- not in IO any more, oh well:
1717 -- putStr "warning: -O conflicts with --interactive; -O ignored.\n"
1719 = updOptLevel n dflags
1722 -- -Odph is equivalent to
1724 -- -O2 optimise as much as possible
1725 -- -fno-method-sharing sharing specialisation defeats fusion
1727 -- -fdicts-cheap always inline dictionaries
1728 -- -fmax-simplifier-iterations20 this is necessary sometimes
1729 -- -fno-spec-constr-threshold run SpecConstr even for big loops
1731 setDPHOpt :: DynFlags -> DynFlags
1732 setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
1733 , specConstrThreshold = Nothing
1735 `dopt_set` Opt_DictsCheap
1736 `dopt_unset` Opt_MethodSharing
1738 data DPHBackend = DPHPar
1741 setDPHBackend :: DPHBackend -> DynFlags -> DynFlags
1742 setDPHBackend backend dflags = dflags { dphBackend = backend }
1745 setMainIs :: String -> DynP ()
1747 | not (null main_fn) && isLower (head main_fn)
1748 -- The arg looked like "Foo.Bar.baz"
1749 = upd $ \d -> d{ mainFunIs = Just main_fn,
1750 mainModIs = mkModule mainPackageId (mkModuleName main_mod) }
1752 | isUpper (head arg) -- The arg looked like "Foo" or "Foo.Bar"
1753 = upd $ \d -> d{ mainModIs = mkModule mainPackageId (mkModuleName arg) }
1755 | otherwise -- The arg looked like "baz"
1756 = upd $ \d -> d{ mainFunIs = Just arg }
1758 (main_mod, main_fn) = splitLongestPrefix arg (== '.')
1760 -----------------------------------------------------------------------------
1761 -- Paths & Libraries
1763 addImportPath, addLibraryPath, addIncludePath, addFrameworkPath :: FilePath -> DynP ()
1765 -- -i on its own deletes the import paths
1766 addImportPath "" = upd (\s -> s{importPaths = []})
1767 addImportPath p = upd (\s -> s{importPaths = importPaths s ++ splitPathList p})
1771 upd (\s -> s{libraryPaths = libraryPaths s ++ splitPathList p})
1774 upd (\s -> s{includePaths = includePaths s ++ splitPathList p})
1776 addFrameworkPath p =
1777 upd (\s -> s{frameworkPaths = frameworkPaths s ++ splitPathList p})
1779 #ifndef mingw32_TARGET_OS
1780 split_marker :: Char
1781 split_marker = ':' -- not configurable (ToDo)
1784 splitPathList :: String -> [String]
1785 splitPathList s = filter notNull (splitUp s)
1786 -- empty paths are ignored: there might be a trailing
1787 -- ':' in the initial list, for example. Empty paths can
1788 -- cause confusion when they are translated into -I options
1789 -- for passing to gcc.
1791 #ifndef mingw32_TARGET_OS
1792 splitUp xs = split split_marker xs
1794 -- Windows: 'hybrid' support for DOS-style paths in directory lists.
1796 -- That is, if "foo:bar:baz" is used, this interpreted as
1797 -- consisting of three entries, 'foo', 'bar', 'baz'.
1798 -- However, with "c:/foo:c:\\foo;x:/bar", this is interpreted
1799 -- as 3 elts, "c:/foo", "c:\\foo", "x:/bar"
1801 -- Notice that no attempt is made to fully replace the 'standard'
1802 -- split marker ':' with the Windows / DOS one, ';'. The reason being
1803 -- that this will cause too much breakage for users & ':' will
1804 -- work fine even with DOS paths, if you're not insisting on being silly.
1807 splitUp (x:':':div:xs) | div `elem` dir_markers
1808 = ((x:':':div:p): splitUp rs)
1810 (p,rs) = findNextPath xs
1811 -- we used to check for existence of the path here, but that
1812 -- required the IO monad to be threaded through the command-line
1813 -- parser which is quite inconvenient. The
1814 splitUp xs = cons p (splitUp rs)
1816 (p,rs) = findNextPath xs
1821 -- will be called either when we've consumed nought or the
1822 -- "<Drive>:/" part of a DOS path, so splitting is just a Q of
1823 -- finding the next split marker.
1825 case break (`elem` split_markers) xs of
1826 (p, _:ds) -> (p, ds)
1829 split_markers :: [Char]
1830 split_markers = [':', ';']
1832 dir_markers :: [Char]
1833 dir_markers = ['/', '\\']
1836 -- -----------------------------------------------------------------------------
1837 -- tmpDir, where we store temporary files.
1839 setTmpDir :: FilePath -> DynFlags -> DynFlags
1840 setTmpDir dir dflags = dflags{ tmpDir = normalise dir }
1841 -- we used to fix /cygdrive/c/.. on Windows, but this doesn't
1842 -- seem necessary now --SDM 7/2/2008
1844 -----------------------------------------------------------------------------
1847 setOptHpcDir :: String -> DynP ()
1848 setOptHpcDir arg = upd $ \ d -> d{hpcDir = arg}
1850 -----------------------------------------------------------------------------
1851 -- Via-C compilation stuff
1853 -- There are some options that we need to pass to gcc when compiling
1854 -- Haskell code via C, but are only supported by recent versions of
1855 -- gcc. The configure script decides which of these options we need,
1856 -- and puts them in the file "extra-gcc-opts" in $topdir, which is
1857 -- read before each via-C compilation. The advantage of having these
1858 -- in a separate file is that the file can be created at install-time
1859 -- depending on the available gcc version, and even re-generated later
1860 -- if gcc is upgraded.
1862 -- The options below are not dependent on the version of gcc, only the
1865 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
1866 [String]) -- for registerised HC compilations
1867 machdepCCOpts _dflags
1868 #if alpha_TARGET_ARCH
1870 #ifdef HAVE_THREADED_RTS_SUPPORT
1874 -- For now, to suppress the gcc warning "call-clobbered
1875 -- register used for global register variable", we simply
1876 -- disable all warnings altogether using the -w flag. Oh well.
1878 #elif hppa_TARGET_ARCH
1879 -- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
1880 -- (very nice, but too bad the HP /usr/include files don't agree.)
1881 = ( ["-D_HPUX_SOURCE"], [] )
1883 #elif m68k_TARGET_ARCH
1884 -- -fno-defer-pop : for the .hc files, we want all the pushing/
1885 -- popping of args to routines to be explicit; if we let things
1886 -- be deferred 'til after an STGJUMP, imminent death is certain!
1888 -- -fomit-frame-pointer : *don't*
1889 -- It's better to have a6 completely tied up being a frame pointer
1890 -- rather than let GCC pick random things to do with it.
1891 -- (If we want to steal a6, then we would try to do things
1892 -- as on iX86, where we *do* steal the frame pointer [%ebp].)
1893 = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
1895 #elif i386_TARGET_ARCH
1896 -- -fno-defer-pop : basically the same game as for m68k
1898 -- -fomit-frame-pointer : *must* in .hc files; because we're stealing
1899 -- the fp (%ebp) for our register maps.
1900 = let n_regs = stolen_x86_regs _dflags
1903 ( [ if sta then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
1906 "-fomit-frame-pointer",
1907 -- we want -fno-builtin, because when gcc inlines
1908 -- built-in functions like memcpy() it tends to
1909 -- run out of registers, requiring -monly-n-regs
1911 "-DSTOLEN_X86_REGS="++show n_regs ]
1914 #elif ia64_TARGET_ARCH
1915 = ( [], ["-fomit-frame-pointer", "-G0"] )
1917 #elif x86_64_TARGET_ARCH
1918 = ( [], ["-fomit-frame-pointer",
1919 "-fno-asynchronous-unwind-tables",
1920 -- the unwind tables are unnecessary for HC code,
1921 -- and get in the way of -split-objs. Another option
1922 -- would be to throw them away in the mangler, but this
1925 -- calling builtins like strlen() using the FFI can
1926 -- cause gcc to run out of regs, so use the external
1930 #elif sparc_TARGET_ARCH
1932 -- For now, to suppress the gcc warning "call-clobbered
1933 -- register used for global register variable", we simply
1934 -- disable all warnings altogether using the -w flag. Oh well.
1936 #elif powerpc_apple_darwin_TARGET
1938 -- Disable Apple's precompiling preprocessor. It's a great thing
1939 -- for "normal" programs, but it doesn't support register variable
1941 = ( [], ["-no-cpp-precomp"] )
1946 picCCOpts :: DynFlags -> [String]
1948 #if darwin_TARGET_OS
1949 -- Apple prefers to do things the other way round.
1950 -- PIC is on by default.
1951 -- -mdynamic-no-pic:
1952 -- Turn off PIC code generation.
1954 -- Don't generate "common" symbols - these are unwanted
1955 -- in dynamic libraries.
1958 = ["-fno-common", "-D__PIC__"]
1960 = ["-mdynamic-no-pic"]
1961 #elif mingw32_TARGET_OS
1962 -- no -fPIC for Windows
1969 = ["-fPIC", "-D__PIC__"]
1974 -- -----------------------------------------------------------------------------
1978 can_split = cSplitObjs == "YES"
1980 -- -----------------------------------------------------------------------------
1983 compilerInfo :: [(String, String)]
1984 compilerInfo = [("Project name", cProjectName),
1985 ("Project version", cProjectVersion),
1986 ("Booter version", cBooterVersion),
1988 ("Interface file version", cHscIfaceFileVersion),
1989 ("Have interpreter", cGhcWithInterpreter),
1990 ("Object splitting", cSplitObjs),
1991 ("Have native code generator", cGhcWithNativeCodeGen),
1992 ("Support SMP", cGhcWithSMP),
1993 ("Unregisterised", cGhcUnregisterised),
1994 ("Tables next to code", cGhcEnableTablesNextToCode),
1995 ("Win32 DLLs", cEnableWin32DLLs),
1996 ("RTS ways", cGhcRTSWays),
1997 ("Leading underscore", cLeadingUnderscore),
1998 ("Debug on", show debugIsOn)