DynFlag(..),
ExtensionFlag(..),
glasgowExtsFlags,
- flattenExtensionFlags,
- ensureFlattenedExtensionFlags,
dopt,
dopt_set,
dopt_unset,
xopt,
xopt_set,
xopt_unset,
- xopt_set_flattened,
- xopt_unset_flattened,
DynFlags(..),
RtsOptsEnabled(..),
HscTarget(..), isObjectTarget, defaultObjectTarget,
Option(..), showOpt,
DynLibLoader(..),
fFlags, fLangFlags, xFlags,
- dphPackage,
+ DPHBackend(..), dphPackageMaybe,
wayNames,
-- ** Manipulating DynFlags
import Data.List
import Data.Map (Map)
import qualified Data.Map as Map
+import Data.Maybe
import System.FilePath
import System.IO ( stderr, hPutChar )
-- debugging flags
= Opt_D_dump_cmm
+ | Opt_D_dump_raw_cmm
| Opt_D_dump_cmmz
| Opt_D_dump_cmmz_pretty
| Opt_D_dump_cps_cmm
| Opt_D_dump_asm_stats
| Opt_D_dump_asm_expanded
| Opt_D_dump_llvm
+ | Opt_D_dump_core_stats
| Opt_D_dump_cpranal
| Opt_D_dump_deriv
| Opt_D_dump_ds
| Opt_D_dump_foreign
| Opt_D_dump_inlinings
| Opt_D_dump_rule_firings
+ | Opt_D_dump_rule_rewrites
| Opt_D_dump_occur_anal
| Opt_D_dump_parsed
| Opt_D_dump_rn
| Opt_D_dump_rn_stats
| Opt_D_dump_opt_cmm
| Opt_D_dump_simpl_stats
+ | Opt_D_dump_cs_trace -- Constraint solver in type checker
| Opt_D_dump_tc_trace
| Opt_D_dump_if_trace
+ | Opt_D_dump_vt_trace
| Opt_D_dump_splices
| Opt_D_dump_BCOs
| Opt_D_dump_vect
| Opt_WarnHiShadows
| Opt_WarnImplicitPrelude
| Opt_WarnIncompletePatterns
+ | Opt_WarnIncompleteUniPatterns
| Opt_WarnIncompletePatternsRecUpd
| Opt_WarnMissingFields
| Opt_WarnMissingImportList
| Opt_WarnMissingMethods
| Opt_WarnMissingSigs
+ | Opt_WarnMissingLocalSigs
| Opt_WarnNameShadowing
| Opt_WarnOverlappingPatterns
- | Opt_WarnSimplePatterns
| Opt_WarnTypeDefaults
| Opt_WarnMonomorphism
| Opt_WarnUnusedBinds
| Opt_WarnDodgyExports
| Opt_WarnDodgyImports
| Opt_WarnOrphans
+ | Opt_WarnAutoOrphans
+ | Opt_WarnIdentities
| Opt_WarnTabs
| Opt_WarnUnrecognisedPragmas
| Opt_WarnDodgyForeignImports
| Opt_DoEtaReduction
| Opt_CaseMerge
| Opt_UnboxStrictFields
- | Opt_MethodSharing
+ | Opt_MethodSharing -- Now a no-op; remove in GHC 7.2
| Opt_DictsCheap
| Opt_EnableRewriteRules -- Apply rewrite rules during simplification
| Opt_Vectorise
| Opt_Pp
| Opt_ForceRecomp
| Opt_DryRun
- | Opt_DoAsmMangling
| Opt_ExcessPrecision
| Opt_EagerBlackHoling
| Opt_ReadUserPackageConf
| Opt_SharedImplib
| Opt_BuildingCabalPackage
| Opt_SSE2
+ | Opt_GhciSandbox
+ | Opt_HelpfulErrors
-- temporary flags
| Opt_RunCPS
| Opt_KeepHiDiffs
| Opt_KeepHcFiles
| Opt_KeepSFiles
- | Opt_KeepRawSFiles
| Opt_KeepTmpFiles
| Opt_KeepRawTokenStream
| Opt_KeepLlvmFiles
| Opt_ForeignFunctionInterface
| Opt_UnliftedFFITypes
| Opt_GHCForeignImportPrim
- | Opt_PArr -- Syntactic support for parallel arrays
+ | Opt_ParallelArrays -- Syntactic support for parallel arrays
| Opt_Arrows -- Arrow-notation syntax
| Opt_TemplateHaskell
| Opt_QuasiQuotes
| Opt_RecordPuns
| Opt_ViewPatterns
| Opt_GADTs
+ | Opt_GADTSyntax
| Opt_NPlusKPatterns
| Opt_DoAndIfThenElse
+ | Opt_RebindableSyntax
| Opt_StandaloneDeriving
| Opt_DeriveDataTypeable
| Opt_ImpredicativeTypes
| Opt_TypeOperators
| Opt_PackageImports
- | Opt_NewQualifiedOperators
| Opt_ExplicitForAll
| Opt_AlternativeLayoutRule
| Opt_AlternativeLayoutRuleTransitional
| Opt_DatatypeContexts
+ | Opt_NondecreasingIndentation
+ | Opt_RelaxedLayout
deriving (Eq, Show)
-- | Contains not only a collection of 'DynFlag's but also a plethora of
specConstrThreshold :: Maybe Int, -- ^ Threshold for SpecConstr
specConstrCount :: Maybe Int, -- ^ Max number of specialisations for any one function
liberateCaseThreshold :: Maybe Int, -- ^ Threshold for LiberateCase
+ floatLamArgs :: Maybe Int, -- ^ Arg count for lambda floating
+ -- See CoreMonad.FloatOutSwitches
#ifndef OMIT_NATIVE_CODEGEN
targetPlatform :: Platform, -- ^ The platform we're compiling for. Used by the NCG.
#endif
- stolen_x86_regs :: Int,
cmdlineHcIncludes :: [String], -- ^ @\-\#includes@
importPaths :: [FilePath],
mainModIs :: Module,
pgm_P :: (String,[Option]),
pgm_F :: String,
pgm_c :: (String,[Option]),
- pgm_m :: (String,[Option]),
pgm_s :: (String,[Option]),
pgm_a :: (String,[Option]),
pgm_l :: (String,[Option]),
-- hsc dynamic flags
flags :: [DynFlag],
+ -- Don't change this without updating extensionFlags:
language :: Maybe Language,
- extensionFlags :: Either [OnOff ExtensionFlag]
- [ExtensionFlag],
+ -- Don't change this without updating extensionFlags:
+ extensions :: [OnOff ExtensionFlag],
+ -- extensionFlags should always be equal to
+ -- flattenExtensionFlags language extensions
+ extensionFlags :: [ExtensionFlag],
-- | Message output action: use "ErrUtils" instead of this if you can
log_action :: Severity -> SrcSpan -> PprStyle -> Message -> IO (),
deriving Eq
data RtsOptsEnabled = RtsOptsNone | RtsOptsSafeOnly | RtsOptsAll
+ deriving (Show)
-- | Used by 'GHC.newSession' to partially initialize a new 'DynFlags' value
initDynFlags :: DynFlags -> IO DynFlags
specConstrThreshold = Just 200,
specConstrCount = Just 3,
liberateCaseThreshold = Just 200,
+ floatLamArgs = Just 0, -- Default: float only if no fvs
strictnessBefore = [],
#ifndef OMIT_NATIVE_CODEGEN
targetPlatform = defaultTargetPlatform,
#endif
- stolen_x86_regs = 4,
cmdlineHcIncludes = [],
importPaths = ["."],
mainModIs = mAIN,
mainFunIs = Nothing,
ctxtStkDepth = mAX_CONTEXT_REDUCTION_DEPTH,
- dphBackend = DPHPar,
+ dphBackend = DPHNone,
thisPackage = mainPackageId,
pgm_P = panic "defaultDynFlags: No pgm_P",
pgm_F = panic "defaultDynFlags: No pgm_F",
pgm_c = panic "defaultDynFlags: No pgm_c",
- pgm_m = panic "defaultDynFlags: No pgm_m",
pgm_s = panic "defaultDynFlags: No pgm_s",
pgm_a = panic "defaultDynFlags: No pgm_a",
pgm_l = panic "defaultDynFlags: No pgm_l",
haddockOptions = Nothing,
flags = defaultFlags,
language = Nothing,
- extensionFlags = Left [],
+ extensions = [],
+ extensionFlags = flattenExtensionFlags Nothing [],
log_action = \severity srcSpan style msg ->
case severity of
data OnOff a = On a
| Off a
-flattenExtensionFlags :: DynFlags -> DynFlags
-flattenExtensionFlags dflags
- = case extensionFlags dflags of
- Left onoffs ->
- dflags {
- extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
- }
- Right _ ->
- panic "Flattening already-flattened extension flags"
-
-ensureFlattenedExtensionFlags :: DynFlags -> DynFlags
-ensureFlattenedExtensionFlags dflags
- = case extensionFlags dflags of
- Left onoffs ->
- dflags {
- extensionFlags = Right $ flattenExtensionFlags' (language dflags) onoffs
- }
- Right _ ->
- dflags
-
-- OnOffs accumulate in reverse order, so we use foldr in order to
-- process them in the right order
-flattenExtensionFlags' :: Maybe Language -> [OnOff ExtensionFlag]
- -> [ExtensionFlag]
-flattenExtensionFlags' ml = foldr f defaultExtensionFlags
+flattenExtensionFlags :: Maybe Language -> [OnOff ExtensionFlag]
+ -> [ExtensionFlag]
+flattenExtensionFlags ml = foldr f defaultExtensionFlags
where f (On f) flags = f : delete f flags
f (Off f) flags = delete f flags
defaultExtensionFlags = languageExtensions ml
languageExtensions :: Maybe Language -> [ExtensionFlag]
+
languageExtensions Nothing
+ -- Nothing => the default case
= Opt_MonoPatBinds -- Experimentally, I'm making this non-standard
-- behaviour the default, to see if anyone notices
-- SLPJ July 06
-- In due course I'd like Opt_MonoLocalBinds to be on by default
+ -- But NB it's implied by GADTs etc
-- SLPJ September 2010
+ : Opt_NondecreasingIndentation -- This has been on by default for some time
: languageExtensions (Just Haskell2010)
+
languageExtensions (Just Haskell98)
= [Opt_ImplicitPrelude,
Opt_MonomorphismRestriction,
Opt_NPlusKPatterns,
- Opt_DatatypeContexts]
+ Opt_DatatypeContexts,
+ Opt_NondecreasingIndentation
+ -- strictly speaking non-standard, but we always had this
+ -- on implicitly before the option was added in 7.1, and
+ -- turning it off breaks code, so we're keeping it on for
+ -- backwards compatibility. Cabal uses -XHaskell98 by
+ -- default unless you specify another language.
+ ]
+
languageExtensions (Just Haskell2010)
= [Opt_ImplicitPrelude,
Opt_MonomorphismRestriction,
-- | Test whether a 'ExtensionFlag' is set
xopt :: ExtensionFlag -> DynFlags -> Bool
-xopt f dflags = case extensionFlags dflags of
- Left _ -> panic ("Testing for extension flag " ++ show f ++ " before flattening")
- Right flags -> f `elem` flags
+xopt f dflags = f `elem` extensionFlags dflags
-- | Set a 'ExtensionFlag'
xopt_set :: DynFlags -> ExtensionFlag -> DynFlags
-xopt_set dfs f = case extensionFlags dfs of
- Left onoffs -> dfs { extensionFlags = Left (On f : onoffs) }
- Right _ -> panic ("Setting extension flag " ++ show f ++ " after flattening")
-
--- | Set a 'ExtensionFlag'
-xopt_set_flattened :: DynFlags -> ExtensionFlag -> DynFlags
-xopt_set_flattened dfs f = case extensionFlags dfs of
- Left _ ->
- panic ("Setting extension flag " ++ show f ++ " before flattening, but expected flattened")
- Right flags ->
- dfs { extensionFlags = Right (f : delete f flags) }
+xopt_set dfs f
+ = let onoffs = On f : extensions dfs
+ in dfs { extensions = onoffs,
+ extensionFlags = flattenExtensionFlags (language dfs) onoffs }
-- | Unset a 'ExtensionFlag'
xopt_unset :: DynFlags -> ExtensionFlag -> DynFlags
-xopt_unset dfs f = case extensionFlags dfs of
- Left onoffs -> dfs { extensionFlags = Left (Off f : onoffs) }
- Right _ -> panic ("Unsetting extension flag " ++ show f ++ " after flattening")
+xopt_unset dfs f
+ = let onoffs = Off f : extensions dfs
+ in dfs { extensions = onoffs,
+ extensionFlags = flattenExtensionFlags (language dfs) onoffs }
--- | Unset a 'ExtensionFlag'
-xopt_unset_flattened :: DynFlags -> ExtensionFlag -> DynFlags
-xopt_unset_flattened dfs f = case extensionFlags dfs of
- Left _ ->
- panic ("Unsetting extension flag " ++ show f ++ " before flattening, but expected flattened")
- Right flags ->
- dfs { extensionFlags = Right (delete f flags) }
+setLanguage :: Language -> DynP ()
+setLanguage l = upd f
+ where f dfs = let mLang = Just l
+ oneoffs = extensions dfs
+ in dfs {
+ language = mLang,
+ extensionFlags = flattenExtensionFlags mLang oneoffs
+ }
-- | Retrieve the options corresponding to a particular @opt_*@ field in the correct order
getOpts :: DynFlags -- ^ 'DynFlags' to retrieve the options from
setHiDir f d = d{ hiDir = Just f}
setStubDir f d = d{ stubDir = Just f, includePaths = f : includePaths d }
-- -stubdir D adds an implicit -I D, so that gcc can find the _stub.h file
- -- \#included from the .hc file when compiling with -fvia-C.
+ -- \#included from the .hc file when compiling via C (i.e. unregisterised
+ -- builds).
setOutputDir f = setObjectDir f . setHiDir f . setStubDir f
setDylibInstallName f d = d{ dylibInstallName = Just f}
= runCmdLine (processArgs flag_spec args') dflags0
when (not (null errs)) $ ghcError $ errorsToGhcException errs
- -- Cannot use -fPIC with registerised -fvia-C, because the mangler
- -- isn't up to the job. We know that if hscTarget == HscC, then the
- -- user has explicitly used -fvia-C, because -fasm is the default,
- -- unless there is no NCG on this platform. The latter case is
- -- checked when the -fPIC flag is parsed.
- --
let (pic_warns, dflags2)
- | opt_PIC && hscTarget dflags1 == HscC && cGhcUnregisterised == "NO"
- = ([L noSrcSpan $ "Warning: -fvia-C is incompatible with -fPIC; ignoring -fvia-C"],
- dflags1{ hscTarget = HscAsm })
#if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
| (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
= ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
, Flag "pgmP" (hasArg setPgmP)
, Flag "pgmF" (hasArg (\f d -> d{ pgm_F = f}))
, Flag "pgmc" (hasArg (\f d -> d{ pgm_c = (f,[])}))
- , Flag "pgmm" (hasArg (\f d -> d{ pgm_m = (f,[])}))
+ , Flag "pgmm" (HasArg (\_ -> addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
, Flag "pgms" (hasArg (\f d -> d{ pgm_s = (f,[])}))
, Flag "pgma" (hasArg (\f d -> d{ pgm_a = (f,[])}))
, Flag "pgml" (hasArg (\f d -> d{ pgm_l = (f,[])}))
, Flag "keep-hc-files" (NoArg (setDynFlag Opt_KeepHcFiles))
, Flag "keep-s-file" (NoArg (setDynFlag Opt_KeepSFiles))
, Flag "keep-s-files" (NoArg (setDynFlag Opt_KeepSFiles))
- , Flag "keep-raw-s-file" (NoArg (setDynFlag Opt_KeepRawSFiles))
- , Flag "keep-raw-s-files" (NoArg (setDynFlag Opt_KeepRawSFiles))
+ , Flag "keep-raw-s-file" (NoArg (addWarn "The -keep-raw-s-file flag does nothing; it will be removed in a future GHC release"))
+ , Flag "keep-raw-s-files" (NoArg (addWarn "The -keep-raw-s-files flag does nothing; it will be removed in a future GHC release"))
, Flag "keep-llvm-file" (NoArg (setDynFlag Opt_KeepLlvmFiles))
, Flag "keep-llvm-files" (NoArg (setDynFlag Opt_KeepLlvmFiles))
-- This only makes sense as plural
, Flag "dstg-stats" (NoArg (setDynFlag Opt_StgStats))
, Flag "ddump-cmm" (setDumpFlag Opt_D_dump_cmm)
+ , Flag "ddump-raw-cmm" (setDumpFlag Opt_D_dump_raw_cmm)
, Flag "ddump-cmmz" (setDumpFlag Opt_D_dump_cmmz)
, Flag "ddump-cmmz-pretty" (setDumpFlag Opt_D_dump_cmmz_pretty)
+ , Flag "ddump-core-stats" (setDumpFlag Opt_D_dump_core_stats)
, Flag "ddump-cps-cmm" (setDumpFlag Opt_D_dump_cps_cmm)
, Flag "ddump-cvt-cmm" (setDumpFlag Opt_D_dump_cvt_cmm)
, Flag "ddump-asm" (setDumpFlag Opt_D_dump_asm)
, Flag "ddump-foreign" (setDumpFlag Opt_D_dump_foreign)
, Flag "ddump-inlinings" (setDumpFlag Opt_D_dump_inlinings)
, Flag "ddump-rule-firings" (setDumpFlag Opt_D_dump_rule_firings)
+ , Flag "ddump-rule-rewrites" (setDumpFlag Opt_D_dump_rule_rewrites)
, Flag "ddump-occur-anal" (setDumpFlag Opt_D_dump_occur_anal)
, Flag "ddump-parsed" (setDumpFlag Opt_D_dump_parsed)
, Flag "ddump-rn" (setDumpFlag Opt_D_dump_rn)
, Flag "ddump-worker-wrapper" (setDumpFlag Opt_D_dump_worker_wrapper)
, Flag "ddump-rn-trace" (setDumpFlag Opt_D_dump_rn_trace)
, Flag "ddump-if-trace" (setDumpFlag Opt_D_dump_if_trace)
+ , Flag "ddump-cs-trace" (setDumpFlag Opt_D_dump_cs_trace)
, Flag "ddump-tc-trace" (setDumpFlag Opt_D_dump_tc_trace)
+ , Flag "ddump-vt-trace" (setDumpFlag Opt_D_dump_vt_trace)
, Flag "ddump-splices" (setDumpFlag Opt_D_dump_splices)
, Flag "ddump-rn-stats" (setDumpFlag Opt_D_dump_rn_stats)
, Flag "ddump-opt-cmm" (setDumpFlag Opt_D_dump_opt_cmm)
------ Machine dependant (-m<blah>) stuff ---------------------------
- , Flag "monly-2-regs" (noArg (\s -> s{stolen_x86_regs = 2}))
- , Flag "monly-3-regs" (noArg (\s -> s{stolen_x86_regs = 3}))
- , Flag "monly-4-regs" (noArg (\s -> s{stolen_x86_regs = 4}))
+ , Flag "monly-2-regs" (NoArg (addWarn "The -monly-2-regs flag does nothing; it will be removed in a future GHC release"))
+ , Flag "monly-3-regs" (NoArg (addWarn "The -monly-3-regs flag does nothing; it will be removed in a future GHC release"))
+ , Flag "monly-4-regs" (NoArg (addWarn "The -monly-4-regs flag does nothing; it will be removed in a future GHC release"))
, Flag "msse2" (NoArg (setDynFlag Opt_SSE2))
------ Warning opts -------------------------------------------------
, Flag "frule-check" (SepArg (\s -> upd (\d -> d{ ruleCheck = Just s })))
, Flag "fcontext-stack" (intSuffix (\n d -> d{ ctxtStkDepth = n }))
, Flag "fstrictness-before" (intSuffix (\n d -> d{ strictnessBefore = n : strictnessBefore d }))
+ , Flag "ffloat-lam-args" (intSuffix (\n d -> d{ floatLamArgs = Just n }))
+ , Flag "ffloat-all-lams" (intSuffix (\n d -> d{ floatLamArgs = Nothing }))
------ Profiling ----------------------------------------------------
, Flag "fdph-seq" (NoArg (setDPHBackend DPHSeq))
, Flag "fdph-par" (NoArg (setDPHBackend DPHPar))
, Flag "fdph-this" (NoArg (setDPHBackend DPHThis))
+ , Flag "fdph-none" (NoArg (setDPHBackend DPHNone))
------ Compiler flags -----------------------------------------------
, Flag "fasm" (NoArg (setObjTarget HscAsm))
- , Flag "fvia-c" (NoArg (setObjTarget HscC >>
- (addWarn "The -fvia-c flag will be removed in a future GHC release")))
- , Flag "fvia-C" (NoArg (setObjTarget HscC >>
- (addWarn "The -fvia-C flag will be removed in a future GHC release")))
+ , Flag "fvia-c" (NoArg
+ (addWarn "The -fvia-c flag does nothing; it will be removed in a future GHC release"))
+ , Flag "fvia-C" (NoArg
+ (addWarn "The -fvia-C flag does nothing; it will be removed in a future GHC release"))
, Flag "fllvm" (NoArg (setObjTarget HscLlvm))
, Flag "fno-code" (NoArg (do upd $ \d -> d{ ghcLink=NoLink }
setTarget HscNothing))
, Flag "fbyte-code" (NoArg (setTarget HscInterpreted))
, Flag "fobject-code" (NoArg (setTarget defaultHscTarget))
- , Flag "fglasgow-exts" (NoArg enableGlasgowExts)
- , Flag "fno-glasgow-exts" (NoArg disableGlasgowExts)
+ , Flag "fglasgow-exts" (NoArg (enableGlasgowExts >> deprecate "Use individual extensions instead"))
+ , Flag "fno-glasgow-exts" (NoArg (disableGlasgowExts >> deprecate "Use individual extensions instead"))
]
- ++ map (mkFlag True "f" setDynFlag ) fFlags
- ++ map (mkFlag False "fno-" unSetDynFlag) fFlags
- ++ map (mkFlag True "f" setExtensionFlag ) fLangFlags
- ++ map (mkFlag False "fno-" unSetExtensionFlag) fLangFlags
- ++ map (mkFlag True "X" setExtensionFlag ) xFlags
- ++ map (mkFlag False "XNo" unSetExtensionFlag) xFlags
- ++ map (mkFlag True "X" setLanguage) languageFlags
+ ++ map (mkFlag turnOn "f" setDynFlag ) fFlags
+ ++ map (mkFlag turnOff "fno-" unSetDynFlag) fFlags
+ ++ map (mkFlag turnOn "f" setExtensionFlag ) fLangFlags
+ ++ map (mkFlag turnOff "fno-" unSetExtensionFlag) fLangFlags
+ ++ map (mkFlag turnOn "X" setExtensionFlag ) xFlags
+ ++ map (mkFlag turnOff "XNo" unSetExtensionFlag) xFlags
+ ++ map (mkFlag turnOn "X" setLanguage) languageFlags
package_flags :: [Flag (CmdLineP DynFlags)]
package_flags = [
; deprecate "Use -package instead" }))
]
-type FlagSpec flag
- = ( String -- Flag in string form
- , flag -- Flag in internal form
- , Bool -> DynP ()) -- Extra action to run when the flag is found
- -- Typically, emit a warning or error
- -- True <=> we are turning the flag on
+type TurnOnFlag = Bool -- True <=> we are turning the flag on
-- False <=> we are turning the flag off
+turnOn :: TurnOnFlag; turnOn = True
+turnOff :: TurnOnFlag; turnOff = False
+type FlagSpec flag
+ = ( String -- Flag in string form
+ , flag -- Flag in internal form
+ , TurnOnFlag -> DynP ()) -- Extra action to run when the flag is found
+ -- Typically, emit a warning or error
-mkFlag :: Bool -- ^ True <=> it should be turned on
+mkFlag :: TurnOnFlag -- ^ True <=> it should be turned on
-> String -- ^ The flag prefix
-> (flag -> DynP ()) -- ^ What to do when the flag is found
-> FlagSpec flag -- ^ Specification of this particular flag
-> Flag (CmdLineP DynFlags)
-mkFlag turnOn flagPrefix f (name, flag, extra_action)
- = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turnOn))
+mkFlag turn_on flagPrefix f (name, flag, extra_action)
+ = Flag (flagPrefix ++ name) (NoArg (f flag >> extra_action turn_on))
-deprecatedForExtension :: String -> Bool -> DynP ()
+deprecatedForExtension :: String -> TurnOnFlag -> DynP ()
deprecatedForExtension lang turn_on
= deprecate ("use -X" ++ flag ++ " or pragma {-# LANGUAGE " ++ flag ++ " #-} instead")
where
flag | turn_on = lang
| otherwise = "No"++lang
-useInstead :: String -> Bool -> DynP ()
+useInstead :: String -> TurnOnFlag -> DynP ()
useInstead flag turn_on
= deprecate ("Use -f" ++ no ++ flag ++ " instead")
where
no = if turn_on then "" else "no-"
-nop :: Bool -> DynP ()
+nop :: TurnOnFlag -> DynP ()
nop _ = return ()
-- | These @-f\<blah\>@ flags can all be reversed with @-fno-\<blah\>@
( "warn-hi-shadowing", Opt_WarnHiShadows, nop ),
( "warn-implicit-prelude", Opt_WarnImplicitPrelude, nop ),
( "warn-incomplete-patterns", Opt_WarnIncompletePatterns, nop ),
+ ( "warn-incomplete-uni-patterns", Opt_WarnIncompleteUniPatterns, nop ),
( "warn-incomplete-record-updates", Opt_WarnIncompletePatternsRecUpd, nop ),
( "warn-missing-fields", Opt_WarnMissingFields, nop ),
( "warn-missing-import-lists", Opt_WarnMissingImportList, nop ),
( "warn-missing-methods", Opt_WarnMissingMethods, nop ),
( "warn-missing-signatures", Opt_WarnMissingSigs, nop ),
+ ( "warn-missing-local-sigs", Opt_WarnMissingLocalSigs, nop ),
( "warn-name-shadowing", Opt_WarnNameShadowing, nop ),
( "warn-overlapping-patterns", Opt_WarnOverlappingPatterns, nop ),
- ( "warn-simple-patterns", Opt_WarnSimplePatterns, nop ),
( "warn-type-defaults", Opt_WarnTypeDefaults, nop ),
( "warn-monomorphism-restriction", Opt_WarnMonomorphism, nop ),
( "warn-unused-binds", Opt_WarnUnusedBinds, nop ),
( "warn-deprecations", Opt_WarnWarningsDeprecations, nop ),
( "warn-deprecated-flags", Opt_WarnDeprecatedFlags, nop ),
( "warn-orphans", Opt_WarnOrphans, nop ),
+ ( "warn-identities", Opt_WarnIdentities, nop ),
+ ( "warn-auto-orphans", Opt_WarnAutoOrphans, nop ),
( "warn-tabs", Opt_WarnTabs, nop ),
( "warn-unrecognised-pragmas", Opt_WarnUnrecognisedPragmas, nop ),
( "warn-lazy-unlifted-bindings", Opt_WarnLazyUnliftedBindings, nop),
( "do-eta-reduction", Opt_DoEtaReduction, nop ),
( "case-merge", Opt_CaseMerge, nop ),
( "unbox-strict-fields", Opt_UnboxStrictFields, nop ),
- ( "method-sharing", Opt_MethodSharing, nop ),
+ ( "method-sharing", Opt_MethodSharing,
+ \_ -> deprecate "doesn't do anything any more"),
+ -- Remove altogether in GHC 7.2
( "dicts-cheap", Opt_DictsCheap, nop ),
( "excess-precision", Opt_ExcessPrecision, nop ),
( "eager-blackholing", Opt_EagerBlackHoling, nop ),
- ( "asm-mangling", Opt_DoAsmMangling, nop ),
( "print-bind-result", Opt_PrintBindResult, nop ),
( "force-recomp", Opt_ForceRecomp, nop ),
( "hpc-no-auto", Opt_Hpc_No_Auto, nop ),
( "embed-manifest", Opt_EmbedManifest, nop ),
( "ext-core", Opt_EmitExternalCore, nop ),
( "shared-implib", Opt_SharedImplib, nop ),
+ ( "ghci-sandbox", Opt_GhciSandbox, nop ),
+ ( "helpful-errors", Opt_HelpfulErrors, nop ),
( "building-cabal-package", Opt_BuildingCabalPackage, nop ),
( "implicit-import-qualified", Opt_ImplicitImportQualified, nop )
]
deprecatedForExtension "ImplicitParams" ),
( "scoped-type-variables", Opt_ScopedTypeVariables,
deprecatedForExtension "ScopedTypeVariables" ),
- ( "parr", Opt_PArr,
- deprecatedForExtension "PArr" ),
+ ( "parr", Opt_ParallelArrays,
+ deprecatedForExtension "ParallelArrays" ),
+ ( "PArr", Opt_ParallelArrays,
+ deprecatedForExtension "ParallelArrays" ),
( "allow-overlapping-instances", Opt_OverlappingInstances,
deprecatedForExtension "OverlappingInstances" ),
( "allow-undecidable-instances", Opt_UndecidableInstances,
( "LiberalTypeSynonyms", Opt_LiberalTypeSynonyms, nop ),
( "Rank2Types", Opt_Rank2Types, nop ),
( "RankNTypes", Opt_RankNTypes, nop ),
- ( "ImpredicativeTypes", Opt_ImpredicativeTypes,
- \_ -> deprecate "impredicative polymorphism will be simplified or removed in GHC 6.14" ),
+ ( "ImpredicativeTypes", Opt_ImpredicativeTypes, nop),
( "TypeOperators", Opt_TypeOperators, nop ),
( "RecursiveDo", Opt_RecursiveDo,
deprecatedForExtension "DoRec"),
( "DoRec", Opt_DoRec, nop ),
( "Arrows", Opt_Arrows, nop ),
- ( "PArr", Opt_PArr, nop ),
+ ( "ParallelArrays", Opt_ParallelArrays, nop ),
( "TemplateHaskell", Opt_TemplateHaskell, checkTemplateHaskellOk ),
( "QuasiQuotes", Opt_QuasiQuotes, nop ),
( "Generics", Opt_Generics, nop ),
( "DisambiguateRecordFields", Opt_DisambiguateRecordFields, nop ),
( "OverloadedStrings", Opt_OverloadedStrings, nop ),
( "GADTs", Opt_GADTs, nop ),
+ ( "GADTSyntax", Opt_GADTSyntax, nop ),
( "ViewPatterns", Opt_ViewPatterns, nop ),
( "TypeFamilies", Opt_TypeFamilies, nop ),
( "BangPatterns", Opt_BangPatterns, nop ),
( "MonomorphismRestriction", Opt_MonomorphismRestriction, nop ),
( "NPlusKPatterns", Opt_NPlusKPatterns, nop ),
( "DoAndIfThenElse", Opt_DoAndIfThenElse, nop ),
+ ( "RebindableSyntax", Opt_RebindableSyntax, nop ),
( "MonoPatBinds", Opt_MonoPatBinds, nop ),
( "ExplicitForAll", Opt_ExplicitForAll, nop ),
( "AlternativeLayoutRule", Opt_AlternativeLayoutRule, nop ),
( "AlternativeLayoutRuleTransitional",Opt_AlternativeLayoutRuleTransitional, nop ),
( "DatatypeContexts", Opt_DatatypeContexts, nop ),
+ ( "NondecreasingIndentation", Opt_NondecreasingIndentation, nop ),
+ ( "RelaxedLayout", Opt_RelaxedLayout, nop ),
( "MonoLocalBinds", Opt_MonoLocalBinds, nop ),
( "RelaxedPolyRec", Opt_RelaxedPolyRec,
\ turn_on -> if not turn_on
( "OverlappingInstances", Opt_OverlappingInstances, nop ),
( "UndecidableInstances", Opt_UndecidableInstances, nop ),
( "IncoherentInstances", Opt_IncoherentInstances, nop ),
- ( "PackageImports", Opt_PackageImports, nop ),
- ( "NewQualifiedOperators", Opt_NewQualifiedOperators,
- \_ -> deprecate "The new qualified operator syntax was rejected by Haskell'" )
+ ( "PackageImports", Opt_PackageImports, nop )
]
defaultFlags :: [DynFlag]
= [ Opt_AutoLinkPackages,
Opt_ReadUserPackageConf,
- Opt_MethodSharing,
-
- Opt_DoAsmMangling,
-
Opt_SharedImplib,
Opt_GenManifest,
Opt_EmbedManifest,
- Opt_PrintBindContents
+ Opt_PrintBindContents,
+ Opt_GhciSandbox,
+ Opt_HelpfulErrors
]
++ [f | (ns,f) <- optLevelFlags, 0 `elem` ns]
++ standardWarnings
-impliedFlags :: [(ExtensionFlag, ExtensionFlag)]
+impliedFlags :: [(ExtensionFlag, TurnOnFlag, ExtensionFlag)]
impliedFlags
- = [ (Opt_RankNTypes, Opt_ExplicitForAll)
- , (Opt_Rank2Types, Opt_ExplicitForAll)
- , (Opt_ScopedTypeVariables, Opt_ExplicitForAll)
- , (Opt_LiberalTypeSynonyms, Opt_ExplicitForAll)
- , (Opt_ExistentialQuantification, Opt_ExplicitForAll)
- , (Opt_PolymorphicComponents, Opt_ExplicitForAll)
-
- , (Opt_GADTs, Opt_MonoLocalBinds)
- , (Opt_TypeFamilies, Opt_MonoLocalBinds)
- , (Opt_FunctionalDependencies, Opt_MonoLocalBinds)
-
- , (Opt_TypeFamilies, Opt_KindSignatures) -- Type families use kind signatures
+ = [ (Opt_RankNTypes, turnOn, Opt_ExplicitForAll)
+ , (Opt_Rank2Types, turnOn, Opt_ExplicitForAll)
+ , (Opt_ScopedTypeVariables, turnOn, Opt_ExplicitForAll)
+ , (Opt_LiberalTypeSynonyms, turnOn, Opt_ExplicitForAll)
+ , (Opt_ExistentialQuantification, turnOn, Opt_ExplicitForAll)
+ , (Opt_PolymorphicComponents, turnOn, Opt_ExplicitForAll)
+ , (Opt_FlexibleInstances, turnOn, Opt_TypeSynonymInstances)
+ , (Opt_FunctionalDependencies, turnOn, Opt_MultiParamTypeClasses)
+
+ , (Opt_RebindableSyntax, turnOff, Opt_ImplicitPrelude) -- NB: turn off!
+
+ , (Opt_GADTs, turnOn, Opt_GADTSyntax)
+ , (Opt_GADTs, turnOn, Opt_MonoLocalBinds)
+ , (Opt_TypeFamilies, turnOn, Opt_MonoLocalBinds)
+
+ , (Opt_TypeFamilies, turnOn, Opt_KindSignatures) -- Type families use kind signatures
-- all over the place
- , (Opt_ImpredicativeTypes, Opt_RankNTypes)
+ , (Opt_ImpredicativeTypes, turnOn, Opt_RankNTypes)
-- Record wild-cards implies field disambiguation
-- Otherwise if you write (C {..}) you may well get
-- stuff like " 'a' not in scope ", which is a bit silly
-- if the compiler has just filled in field 'a' of constructor 'C'
- , (Opt_RecordWildCards, Opt_DisambiguateRecordFields)
+ , (Opt_RecordWildCards, turnOn, Opt_DisambiguateRecordFields)
+
+ , (Opt_ParallelArrays, turnOn, Opt_ParallelListComp)
]
optLevelFlags :: [([Int], DynFlag)]
]
minusWOpts :: [DynFlag]
+-- Things you get with -W
minusWOpts
= standardWarnings ++
[ Opt_WarnUnusedBinds,
]
minusWallOpts :: [DynFlag]
+-- Things you get with -Wall
minusWallOpts
= minusWOpts ++
[ Opt_WarnTypeDefaults,
Opt_WarnUnusedDoBind
]
--- minuswRemovesOpts should be every warning option
minuswRemovesOpts :: [DynFlag]
+-- minuswRemovesOpts should be every warning option
minuswRemovesOpts
= minusWallOpts ++
- [Opt_WarnImplicitPrelude,
+ [Opt_WarnTabs,
Opt_WarnIncompletePatternsRecUpd,
- Opt_WarnSimplePatterns,
+ Opt_WarnIncompleteUniPatterns,
Opt_WarnMonomorphism,
Opt_WarnUnrecognisedPragmas,
- Opt_WarnTabs
- ]
+ Opt_WarnAutoOrphans,
+ Opt_WarnImplicitPrelude
+ ]
enableGlasgowExts :: DynP ()
enableGlasgowExts = do setDynFlag Opt_PrintExplicitForalls
glasgowExtsFlags = [
Opt_ForeignFunctionInterface
, Opt_UnliftedFFITypes
- , Opt_GADTs
, Opt_ImplicitParams
, Opt_ScopedTypeVariables
, Opt_UnboxedTuples
, Opt_ParallelListComp
, Opt_EmptyDataDecls
, Opt_KindSignatures
- , Opt_GeneralizedNewtypeDeriving
- , Opt_TypeFamilies ]
+ , Opt_GeneralizedNewtypeDeriving ]
#ifdef GHCI
-- Consult the RTS to find whether GHC itself has been built profiled
unSetDynFlag f = upd (\dfs -> dopt_unset dfs f)
--------------------------
-setLanguage :: Language -> DynP ()
-setLanguage l = upd (\dfs -> dfs { language = Just l })
-
---------------------------
setExtensionFlag, unSetExtensionFlag :: ExtensionFlag -> DynP ()
setExtensionFlag f = do { upd (\dfs -> xopt_set dfs f)
- ; mapM_ setExtensionFlag deps }
+ ; sequence_ deps }
where
- deps = [ d | (f', d) <- impliedFlags, f' == f ]
+ deps = [ if turn_on then setExtensionFlag d
+ else unSetExtensionFlag d
+ | (f', turn_on, d) <- impliedFlags, f' == f ]
-- When you set f, set the ones it implies
-- NB: use setExtensionFlag recursively, in case the implied flags
-- implies further flags
- -- When you un-set f, however, we don't un-set the things it implies
- -- (except for -fno-glasgow-exts, which is treated specially)
unSetExtensionFlag f = upd (\dfs -> xopt_unset dfs f)
+ -- When you un-set f, however, we don't un-set the things it implies
+ -- (except for -fno-glasgow-exts, which is treated specially)
--------------------------
setDumpFlag' :: DynFlag -> DynP ()
| otherwise = dfs
-- Changes the target only if we're compiling object code. This is
--- used by -fasm and -fvia-C, which switch from one to the other, but
--- not from bytecode to object-code. The idea is that -fasm/-fvia-C
+-- used by -fasm and -fllvm, which switch from one to the other, but
+-- not from bytecode to object-code. The idea is that -fasm/-fllvm
-- can be safely used in an OPTIONS_GHC pragma.
setObjTarget :: HscTarget -> DynP ()
setObjTarget l = upd set
-- -Odph is equivalent to
--
-- -O2 optimise as much as possible
--- -fno-method-sharing sharing specialisation defeats fusion
--- sometimes
--- -fdicts-cheap always inline dictionaries
-- -fmax-simplifier-iterations20 this is necessary sometimes
--- -fsimplifier-phases=3 we use an additional simplifier phase
--- for fusion
--- -fno-spec-constr-threshold run SpecConstr even for big loops
--- -fno-spec-constr-count SpecConstr as much as possible
--- -finline-enough-args hack to prevent excessive inlining
+-- -fsimplifier-phases=3 we use an additional simplifier phase for fusion
--
setDPHOpt :: DynFlags -> DynFlags
setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
, simplPhases = 3
- , specConstrThreshold = Nothing
- , specConstrCount = Nothing
})
- `dopt_set` Opt_DictsCheap
- `dopt_unset` Opt_MethodSharing
-data DPHBackend = DPHPar
- | DPHSeq
- | DPHThis
+-- Determines the package used by the vectoriser for the symbols of the vectorised code.
+-- 'DPHNone' indicates that no data-parallel backend library is available; hence, the
+-- vectoriser cannot be used.
+--
+data DPHBackend = DPHPar -- "dph-par"
+ | DPHSeq -- "dph-seq"
+ | DPHThis -- the currently compiled package
+ | DPHNone -- no DPH library available
deriving(Eq, Ord, Enum, Show)
setDPHBackend :: DPHBackend -> DynP ()
-setDPHBackend backend
- = do
- upd $ \dflags -> dflags { dphBackend = backend }
- mapM_ exposePackage (dph_packages backend)
- where
- dph_packages DPHThis = []
- dph_packages DPHPar = ["dph-prim-par", "dph-par"]
- dph_packages DPHSeq = ["dph-prim-seq", "dph-seq"]
+setDPHBackend backend = upd $ \dflags -> dflags { dphBackend = backend }
-dphPackage :: DynFlags -> PackageId
-dphPackage dflags = case dphBackend dflags of
- DPHPar -> dphParPackageId
- DPHSeq -> dphSeqPackageId
- DPHThis -> thisPackage dflags
+-- Query the DPH backend package to be used by the vectoriser and desugaring of DPH syntax.
+--
+dphPackageMaybe :: DynFlags -> Maybe PackageId
+dphPackageMaybe dflags
+ = case dphBackend dflags of
+ DPHPar -> Just dphParPackageId
+ DPHSeq -> Just dphSeqPackageId
+ DPHThis -> Just (thisPackage dflags)
+ DPHNone -> Nothing
setMainIs :: String -> DynP ()
setMainIs arg
-- The options below are not dependent on the version of gcc, only the
-- platform.
-machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
- [String]) -- for registerised HC compilations
-machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
- in (cCcOpts ++ flagsAll, flagsRegHc)
+machdepCCOpts :: DynFlags -> [String] -- flags for all C compilations
+machdepCCOpts dflags = cCcOpts ++ machdepCCOpts'
-machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
- [String]) -- for registerised HC compilations
-machdepCCOpts' _dflags
+machdepCCOpts' :: [String] -- flags for all C compilations
+machdepCCOpts'
#if alpha_TARGET_ARCH
- = ( ["-w", "-mieee"
+ = ["-w", "-mieee"
#ifdef HAVE_THREADED_RTS_SUPPORT
, "-D_REENTRANT"
#endif
- ], [] )
+ ]
-- For now, to suppress the gcc warning "call-clobbered
-- register used for global register variable", we simply
-- disable all warnings altogether using the -w flag. Oh well.
#elif hppa_TARGET_ARCH
-- ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
-- (very nice, but too bad the HP /usr/include files don't agree.)
- = ( ["-D_HPUX_SOURCE"], [] )
-
-#elif m68k_TARGET_ARCH
- -- -fno-defer-pop : for the .hc files, we want all the pushing/
- -- popping of args to routines to be explicit; if we let things
- -- be deferred 'til after an STGJUMP, imminent death is certain!
- --
- -- -fomit-frame-pointer : *don't*
- -- It's better to have a6 completely tied up being a frame pointer
- -- rather than let GCC pick random things to do with it.
- -- (If we want to steal a6, then we would try to do things
- -- as on iX86, where we *do* steal the frame pointer [%ebp].)
- = ( [], ["-fno-defer-pop", "-fno-omit-frame-pointer"] )
+ = ["-D_HPUX_SOURCE"]
#elif i386_TARGET_ARCH
-- -fno-defer-pop : basically the same game as for m68k
--
-- -fomit-frame-pointer : *must* in .hc files; because we're stealing
-- the fp (%ebp) for our register maps.
- = let n_regs = stolen_x86_regs _dflags
- in
- (
- [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
- ],
- [ "-fno-defer-pop",
- "-fomit-frame-pointer",
- -- we want -fno-builtin, because when gcc inlines
- -- built-in functions like memcpy() it tends to
- -- run out of registers, requiring -monly-n-regs
- "-fno-builtin",
- "-DSTOLEN_X86_REGS="++show n_regs ]
- )
-
-#elif ia64_TARGET_ARCH
- = ( [], ["-fomit-frame-pointer", "-G0"] )
-
-#elif x86_64_TARGET_ARCH
- = (
- [],
- ["-fomit-frame-pointer",
- "-fno-asynchronous-unwind-tables",
- -- the unwind tables are unnecessary for HC code,
- -- and get in the way of -split-objs. Another option
- -- would be to throw them away in the mangler, but this
- -- is easier.
- "-fno-builtin"
- -- calling builtins like strlen() using the FFI can
- -- cause gcc to run out of regs, so use the external
- -- version.
- ] )
-
-#elif sparc_TARGET_ARCH
- = ( [], ["-w"] )
- -- For now, to suppress the gcc warning "call-clobbered
- -- register used for global register variable", we simply
- -- disable all warnings altogether using the -w flag. Oh well.
+ = if opt_Static then ["-DDONT_WANT_WIN32_DLL_SUPPORT"] else []
-#elif powerpc_apple_darwin_TARGET
- -- -no-cpp-precomp:
- -- Disable Apple's precompiling preprocessor. It's a great thing
- -- for "normal" programs, but it doesn't support register variable
- -- declarations.
- = ( [], ["-no-cpp-precomp"] )
#else
- = ( [], [] )
+ = []
#endif
picCCOpts :: DynFlags -> [String]
-- Splitting
can_split :: Bool
-can_split = cSplitObjs == "YES"
+can_split = cSupportsSplitObjs == "YES"
-- -----------------------------------------------------------------------------
-- Compiler Info
("Project version", String cProjectVersion),
("Booter version", String cBooterVersion),
("Stage", String cStage),
- ("Build platform", String cBuildPlatform),
- ("Host platform", String cHostPlatform),
- ("Target platform", String cTargetPlatform),
+ ("Build platform", String cBuildPlatformString),
+ ("Host platform", String cHostPlatformString),
+ ("Target platform", String cTargetPlatformString),
("Have interpreter", String cGhcWithInterpreter),
- ("Object splitting", String cSplitObjs),
+ ("Object splitting supported", String cSupportsSplitObjs),
("Have native code generator", String cGhcWithNativeCodeGen),
- ("Have llvm code generator", String cGhcWithLlvmCodeGen),
("Support SMP", String cGhcWithSMP),
("Unregisterised", String cGhcUnregisterised),
("Tables next to code", String cGhcEnableTablesNextToCode),
("Leading underscore", String cLeadingUnderscore),
("Debug on", String (show debugIsOn)),
("LibDir", FromDynFlags topDir),
- ("Global Package DB", FromDynFlags systemPackageConfig)
+ ("Global Package DB", FromDynFlags systemPackageConfig),
+ ("C compiler flags", String (show cCcOpts)),
+ ("Gcc Linker flags", String (show cGccLinkerOpts)),
+ ("Ld Linker flags", String (show cLdLinkerOpts))
]