\begin{code}
module CmdLineOpts (
- CoreToDo(..), StgToDo(..),
+ CoreToDo(..), buildCoreToDo, StgToDo(..),
SimplifierSwitch(..),
- SimplifierMode(..),
+ SimplifierMode(..), FloatOutSwitches(..),
HscLang(..),
DynFlag(..), -- needed non-abstractly by DriverFlags
dopt_StgToDo, -- DynFlags -> [StgToDo]
dopt_HscLang, -- DynFlags -> HscLang
dopt_OutName, -- DynFlags -> String
+ getOpts, -- (DynFlags -> [a]) -> IO [a]
+ setLang,
+ getVerbFlag,
+ setOptLevel,
-- Manipulating the DynFlags state
getDynFlags, -- IO DynFlags
restoreDynFlags, -- IO DynFlags
-- sets of warning opts
- standardWarnings,
minusWOpts,
minusWallOpts,
-- Output style options
- opt_PprStyle_NoPrags,
- opt_PprStyle_RawTypes,
opt_PprUserLength,
opt_PprStyle_Debug,
opt_AutoSccsOnAllToplevs,
opt_AutoSccsOnExportedToplevs,
opt_AutoSccsOnIndividualCafs,
- opt_AutoSccsOnDicts,
opt_SccProfilingOn,
opt_DoTickyProfiling,
-- language opts
- opt_AllStrict,
opt_DictsStrict,
opt_MaxContextReductionDepth,
opt_IrrefutableTuples,
- opt_NumbersStrict,
opt_Parallel,
opt_SMP,
- opt_NoMonomorphismRestriction,
opt_RuntimeTypes,
+ opt_Flatten,
-- optimisation opts
opt_NoMethodSharing,
- opt_DoSemiTagging,
- opt_FoldrBuildOn,
opt_LiberateCaseThreshold,
- opt_StgDoLetNoEscapes,
- opt_UnfoldCasms,
- opt_UsageSPOn,
- opt_UnboxStrictFields,
+ opt_CprOff,
+ opt_RulesOff,
opt_SimplNoPreInlining,
- opt_SimplDoEtaReduction,
- opt_SimplDoLambdaEtaExpansion,
- opt_SimplCaseMerge,
opt_SimplExcessPrecision,
opt_MaxWorkerArgs,
opt_UF_FunAppDiscount,
opt_UF_KeenessFactor,
opt_UF_UpdateInPlace,
- opt_UF_CheapOp,
opt_UF_DearOp,
-- misc opts
+ opt_ErrorSpans,
opt_InPackage,
opt_EmitCExternDecls,
opt_EnsureSplittableC,
opt_GranMacros,
opt_HiVersion,
opt_HistorySize,
- opt_IgnoreAsserts,
- opt_IgnoreIfacePragmas,
- opt_NoHiCheck,
opt_OmitBlackHoling,
- opt_OmitInterfacePragmas,
- opt_NoPruneTyDecls,
- opt_NoPruneDecls,
opt_Static,
opt_Unregisterised,
opt_EmitExternalCore
#include "HsVersions.h"
-import GlaExts
-import IOExts ( IORef, readIORef, writeIORef )
import Constants -- Default values for some flags
import Util
-import FastTypes
+import FastString ( FastString, mkFastString )
import Config
-
import Maybes ( firstJust )
+
+import GLAEXTS
+import DATA_IOREF ( IORef, readIORef, writeIORef )
+import UNSAFE_IO ( unsafePerformIO )
\end{code}
%************************************************************************
-- Each run of the simplifier can take a different
-- set of simplifier-specific flags.
| CoreDoFloatInwards
- | CoreDoFloatOutwards Bool -- True <=> float lambdas to top level
+ | CoreDoFloatOutwards FloatOutSwitches
| CoreLiberateCase
| CoreDoPrintCore
| CoreDoStaticArgs
| CoreDoWorkerWrapper
| CoreDoSpecialising
| CoreDoSpecConstr
- | CoreDoUSPInf
- | CoreDoCPResult
+ | CoreDoOldStrictness
| CoreDoGlomBinds
| CoreCSE
| CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
data SimplifierSwitch
= MaxSimplifierIterations Int
| NoCaseOfCase
+
+data FloatOutSwitches
+ = FloatOutSw Bool -- True <=> float lambdas to top level
+ Bool -- True <=> float constants to top level,
+ -- even if they do not escape a lambda
\end{code}
%************************************************************************
| Opt_D_dump_tc
| Opt_D_dump_types
| Opt_D_dump_rules
- | Opt_D_dump_usagesp
| Opt_D_dump_cse
| Opt_D_dump_worker_wrapper
| Opt_D_dump_rn_trace
| Opt_D_dump_stix
| Opt_D_dump_simpl_stats
| Opt_D_dump_tc_trace
+ | Opt_D_dump_if_trace
+ | Opt_D_dump_splices
| Opt_D_dump_BCOs
+ | Opt_D_dump_vect
| Opt_D_source_stats
| Opt_D_verbose_core2core
| Opt_D_verbose_stg2stg
| Opt_D_dump_minimal_imports
| Opt_DoCoreLinting
| Opt_DoStgLinting
- | Opt_DoUSPLinting
+ | Opt_WarnIsError -- -Werror; makes warnings fatal
| Opt_WarnDuplicateExports
| Opt_WarnHiShadows
| Opt_WarnIncompletePatterns
-- language opts
| Opt_AllowOverlappingInstances
| Opt_AllowUndecidableInstances
+ | Opt_AllowIncoherentInstances
+ | Opt_NoMonomorphismRestriction
| Opt_GlasgowExts
+ | Opt_FFI
+ | Opt_PArr -- syntactic support for parallel arrays
+ | Opt_Arrows -- Arrow-notation syntax
+ | Opt_TH
+ | Opt_ImplicitParams
| Opt_Generics
| Opt_NoImplicitPrelude
+ -- optimisation opts
+ | Opt_Strictness
+ | Opt_CSE
+ | Opt_IgnoreInterfacePragmas
+ | Opt_OmitInterfacePragmas
+ | Opt_DoLambdaEtaExpansion
+ | Opt_IgnoreAsserts
+ | Opt_DoEtaReduction
+ | Opt_CaseMerge
+ | Opt_UnboxStrictFields
+
deriving (Eq)
data DynFlags = DynFlags {
- coreToDo :: [CoreToDo],
+ coreToDo :: Maybe [CoreToDo], -- reserved for use with -Ofile
stgToDo :: [StgToDo],
hscLang :: HscLang,
hscOutName :: String, -- name of the output file
hscStubCOutName :: String, -- name of the .stub_c output file
extCoreName :: String, -- name of the .core output file
verbosity :: Int, -- verbosity level
+ optLevel :: Int, -- optimisation level
+ maxSimplIterations :: Int, -- max simplifier iterations
+ ruleCheck :: Maybe String,
cppFlag :: Bool, -- preprocess with cpp?
ppFlag :: Bool, -- preprocess with a Haskell Pp?
stolen_x86_regs :: Int,
| HscNothing
deriving (Eq, Show)
+defaultHscLang
+ | cGhcWithNativeCodeGen == "YES" &&
+ (prefixMatch "i386" cTARGETPLATFORM ||
+ prefixMatch "sparc" cTARGETPLATFORM ||
+ prefixMatch "powerpc" cTARGETPLATFORM) = HscAsm
+ | otherwise = HscC
+
defaultDynFlags = DynFlags {
- coreToDo = [], stgToDo = [],
- hscLang = HscC,
+ coreToDo = Nothing, stgToDo = [],
+ hscLang = defaultHscLang,
hscOutName = "",
hscStubHOutName = "", hscStubCOutName = "",
extCoreName = "",
- verbosity = 0,
+ verbosity = 0,
+ optLevel = 0,
+ maxSimplIterations = 4,
+ ruleCheck = Nothing,
cppFlag = False,
ppFlag = False,
stolen_x86_regs = 4,
opt_I = [],
opt_i = [],
#endif
- flags = standardWarnings,
+ flags = [
+ Opt_Generics,
+ -- Generating the helper-functions for
+ -- generics is now on by default
+ Opt_Strictness,
+ -- strictness is on by default, but this only
+ -- applies to -O.
+ Opt_CSE,
+ -- similarly for CSE.
+ Opt_DoLambdaEtaExpansion,
+ -- This one is important for a tiresome reason:
+ -- we want to make sure that the bindings for data
+ -- constructors are eta-expanded. This is probably
+ -- a good thing anyway, but it seems fragile.
+
+ -- and the default no-optimisation options:
+ Opt_IgnoreInterfacePragmas,
+ Opt_OmitInterfacePragmas
+
+ ] ++ standardWarnings
}
{-
dopt :: DynFlag -> DynFlags -> Bool
dopt f dflags = f `elem` (flags dflags)
-dopt_CoreToDo :: DynFlags -> [CoreToDo]
+dopt_CoreToDo :: DynFlags -> Maybe [CoreToDo]
dopt_CoreToDo = coreToDo
dopt_StgToDo :: DynFlags -> [StgToDo]
dopt_unset :: DynFlags -> DynFlag -> DynFlags
dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
-\end{code}
+
+getOpts :: (DynFlags -> [a]) -> IO [a]
+ -- We add to the options from the front, so we need to reverse the list
+getOpts opts = dynFlag opts >>= return . reverse
+
+-- we can only switch between HscC, HscAsmm, and HscILX with dynamic flags
+-- (-fvia-C, -fasm, -filx respectively).
+setLang l = updDynFlags (\ dfs -> case hscLang dfs of
+ HscC -> dfs{ hscLang = l }
+ HscAsm -> dfs{ hscLang = l }
+ HscILX -> dfs{ hscLang = l }
+ _ -> dfs)
+
+getVerbFlag = do
+ verb <- dynFlag verbosity
+ if verb >= 3 then return "-v" else return ""
-----------------------------------------------------------------------------
+-- Setting the optimisation level
+
+setOptLevel :: Int -> IO ()
+setOptLevel n
+ = do dflags <- getDynFlags
+ if hscLang dflags == HscInterpreted && n > 0
+ then putStr "warning: -O conflicts with --interactive; -O ignored.\n"
+ else updDynFlags (setOptLevel' n)
+
+setOptLevel' n dfs
+ = if (n >= 1)
+ then dfs2{ hscLang = HscC, optLevel = n } -- turn on -fvia-C with -O
+ else dfs2{ optLevel = n }
+ where
+ dfs1 = foldr (flip dopt_unset) dfs remove_dopts
+ dfs2 = foldr (flip dopt_set) dfs1 extra_dopts
+
+ extra_dopts
+ | n == 0 = opt_0_dopts
+ | otherwise = opt_1_dopts
+
+ remove_dopts
+ | n == 0 = opt_1_dopts
+ | otherwise = opt_0_dopts
+
+opt_0_dopts = [
+ Opt_IgnoreInterfacePragmas,
+ Opt_OmitInterfacePragmas
+ ]
+
+opt_1_dopts = [
+ Opt_IgnoreAsserts,
+ Opt_DoEtaReduction,
+ Opt_CaseMerge
+ ]
+
+-- Core-to-core phases:
+
+buildCoreToDo :: DynFlags -> [CoreToDo]
+buildCoreToDo dflags = core_todo
+ where
+ opt_level = optLevel dflags
+ max_iter = maxSimplIterations dflags
+ strictness = dopt Opt_Strictness dflags
+ cse = dopt Opt_CSE dflags
+ rule_check = ruleCheck dflags
+
+ core_todo =
+ if opt_level == 0 then
+ [
+ CoreDoSimplify (SimplPhase 0) [
+ MaxSimplifierIterations max_iter
+ ]
+ ]
+
+ else {- opt_level >= 1 -} [
+
+ -- initial simplify: mk specialiser happy: minimum effort please
+ CoreDoSimplify SimplGently [
+ -- Simplify "gently"
+ -- Don't inline anything till full laziness has bitten
+ -- In particular, inlining wrappers inhibits floating
+ -- e.g. ...(case f x of ...)...
+ -- ==> ...(case (case x of I# x# -> fw x#) of ...)...
+ -- ==> ...(case x of I# x# -> case fw x# of ...)...
+ -- and now the redex (f x) isn't floatable any more
+ -- Similarly, don't apply any rules until after full
+ -- laziness. Notably, list fusion can prevent floating.
+
+ NoCaseOfCase,
+ -- Don't do case-of-case transformations.
+ -- This makes full laziness work better
+ MaxSimplifierIterations max_iter
+ ],
+
+ -- Specialisation is best done before full laziness
+ -- so that overloaded functions have all their dictionary lambdas manifest
+ CoreDoSpecialising,
+
+ CoreDoFloatOutwards (FloatOutSw False False),
+ CoreDoFloatInwards,
+
+ CoreDoSimplify (SimplPhase 2) [
+ -- Want to run with inline phase 2 after the specialiser to give
+ -- maximum chance for fusion to work before we inline build/augment
+ -- in phase 1. This made a difference in 'ansi' where an
+ -- overloaded function wasn't inlined till too late.
+ MaxSimplifierIterations max_iter
+ ],
+ case rule_check of { Just pat -> CoreDoRuleCheck 2 pat; Nothing -> CoreDoNothing },
+
+ CoreDoSimplify (SimplPhase 1) [
+ -- Need inline-phase2 here so that build/augment get
+ -- inlined. I found that spectral/hartel/genfft lost some useful
+ -- strictness in the function sumcode' if augment is not inlined
+ -- before strictness analysis runs
+ MaxSimplifierIterations max_iter
+ ],
+ case rule_check of { Just pat -> CoreDoRuleCheck 1 pat; Nothing -> CoreDoNothing },
+
+ CoreDoSimplify (SimplPhase 0) [
+ -- Phase 0: allow all Ids to be inlined now
+ -- This gets foldr inlined before strictness analysis
+
+ MaxSimplifierIterations 3
+ -- At least 3 iterations because otherwise we land up with
+ -- huge dead expressions because of an infelicity in the
+ -- simpifier.
+ -- let k = BIG in foldr k z xs
+ -- ==> let k = BIG in letrec go = \xs -> ...(k x).... in go xs
+ -- ==> let k = BIG in letrec go = \xs -> ...(BIG x).... in go xs
+ -- Don't stop now!
+
+ ],
+ case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing },
+
+#ifdef OLD_STRICTNESS
+ CoreDoOldStrictness
+#endif
+ if strictness then CoreDoStrictness else CoreDoNothing,
+ CoreDoWorkerWrapper,
+ CoreDoGlomBinds,
+
+ CoreDoSimplify (SimplPhase 0) [
+ MaxSimplifierIterations max_iter
+ ],
+
+ CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
+ True), -- Float constants
+ -- nofib/spectral/hartel/wang doubles in speed if you
+ -- do full laziness late in the day. It only happens
+ -- after fusion and other stuff, so the early pass doesn't
+ -- catch it. For the record, the redex is
+ -- f_el22 (f_el21 r_midblock)
+
+
+ -- We want CSE to follow the final full-laziness pass, because it may
+ -- succeed in commoning up things floated out by full laziness.
+ -- CSE used to rely on the no-shadowing invariant, but it doesn't any more
+
+ if cse then CoreCSE else CoreDoNothing,
+
+ CoreDoFloatInwards,
+
+-- Case-liberation for -O2. This should be after
+-- strictness analysis and the simplification which follows it.
+
+ case rule_check of { Just pat -> CoreDoRuleCheck 0 pat; Nothing -> CoreDoNothing },
+
+ if opt_level >= 2 then
+ CoreLiberateCase
+ else
+ CoreDoNothing,
+ if opt_level >= 2 then
+ CoreDoSpecConstr
+ else
+ CoreDoNothing,
+
+ -- Final clean-up simplification:
+ CoreDoSimplify (SimplPhase 0) [
+ MaxSimplifierIterations max_iter
+ ]
+ ]
+
+-- --------------------------------------------------------------------------
-- Mess about with the mutable variables holding the dynamic arguments
-- v_InitDynFlags
-- to the value of v_InitDynFlags before each compilation, then
-- updated by reading any OPTIONS pragma in the current module.
-\begin{code}
GLOBAL_VAR(v_InitDynFlags, defaultDynFlags, DynFlags)
GLOBAL_VAR(v_DynFlags, defaultDynFlags, DynFlags)
-- main/DriverState.
GLOBAL_VAR(v_Static_hsc_opts, [], [String])
-lookUp :: FAST_STRING -> Bool
+lookUp :: FastString -> Bool
lookup_int :: String -> Maybe Int
lookup_def_int :: String -> Int -> Int
lookup_def_float :: String -> Float -> Float
lookup_str :: String -> Maybe String
unpacked_static_opts = unsafePerformIO (readIORef v_Static_hsc_opts)
-packed_static_opts = map _PK_ unpacked_static_opts
+packed_static_opts = map mkFastString unpacked_static_opts
lookUp sw = sw `elem` packed_static_opts
unpacked_opts =
concat $
map (expandAts) $
- map _UNPK_ argv -- NOT ARGV any more: v_Static_hsc_opts
+ map unpackFS argv -- NOT ARGV any more: v_Static_hsc_opts
where
expandAts ('@':fname) = words (unsafePerformIO (readFile fname))
expandAts l = [l]
\begin{code}
-- debugging opts
-opt_PprStyle_NoPrags = lookUp SLIT("-dppr-noprags")
-opt_PprStyle_Debug = lookUp SLIT("-dppr-debug")
-opt_PprStyle_RawTypes = lookUp SLIT("-dppr-rawtypes")
+opt_PprStyle_Debug = lookUp FSLIT("-dppr-debug")
opt_PprUserLength = lookup_def_int "-dppr-user-length" 5 --ToDo: give this a name
-- profiling opts
-opt_AutoSccsOnAllToplevs = lookUp SLIT("-fauto-sccs-on-all-toplevs")
-opt_AutoSccsOnExportedToplevs = lookUp SLIT("-fauto-sccs-on-exported-toplevs")
-opt_AutoSccsOnIndividualCafs = lookUp SLIT("-fauto-sccs-on-individual-cafs")
-opt_AutoSccsOnDicts = lookUp SLIT("-fauto-sccs-on-dicts")
-opt_SccProfilingOn = lookUp SLIT("-fscc-profiling")
-opt_DoTickyProfiling = lookUp SLIT("-fticky-ticky")
+opt_AutoSccsOnAllToplevs = lookUp FSLIT("-fauto-sccs-on-all-toplevs")
+opt_AutoSccsOnExportedToplevs = lookUp FSLIT("-fauto-sccs-on-exported-toplevs")
+opt_AutoSccsOnIndividualCafs = lookUp FSLIT("-fauto-sccs-on-individual-cafs")
+opt_SccProfilingOn = lookUp FSLIT("-fscc-profiling")
+opt_DoTickyProfiling = lookUp FSLIT("-fticky-ticky")
-- language opts
-opt_AllStrict = lookUp SLIT("-fall-strict")
-opt_NoMonomorphismRestriction = lookUp SLIT("-fno-monomorphism-restriction")
-opt_DictsStrict = lookUp SLIT("-fdicts-strict")
-opt_IrrefutableTuples = lookUp SLIT("-firrefutable-tuples")
+opt_AllStrict = lookUp FSLIT("-fall-strict")
+opt_DictsStrict = lookUp FSLIT("-fdicts-strict")
+opt_IrrefutableTuples = lookUp FSLIT("-firrefutable-tuples")
opt_MaxContextReductionDepth = lookup_def_int "-fcontext-stack" mAX_CONTEXT_REDUCTION_DEPTH
-opt_NumbersStrict = lookUp SLIT("-fnumbers-strict")
-opt_Parallel = lookUp SLIT("-fparallel")
-opt_SMP = lookUp SLIT("-fsmp")
+opt_Parallel = lookUp FSLIT("-fparallel")
+opt_SMP = lookUp FSLIT("-fsmp")
+opt_Flatten = lookUp FSLIT("-fflatten")
-- optimisation opts
-opt_NoMethodSharing = lookUp SLIT("-fno-method-sharing")
-opt_DoSemiTagging = lookUp SLIT("-fsemi-tagging")
-opt_FoldrBuildOn = lookUp SLIT("-ffoldr-build-on")
+opt_NoMethodSharing = lookUp FSLIT("-fno-method-sharing")
+opt_CprOff = lookUp FSLIT("-fcpr-off")
+opt_RulesOff = lookUp FSLIT("-frules-off")
+ -- Switch off CPR analysis in the new demand analyser
opt_LiberateCaseThreshold = lookup_def_int "-fliberate-case-threshold" (10::Int)
-opt_StgDoLetNoEscapes = lookUp SLIT("-flet-no-escape")
-opt_UnfoldCasms = lookUp SLIT("-funfold-casms-in-hi-file")
-opt_UsageSPOn = lookUp SLIT("-fusagesp-on")
-opt_UnboxStrictFields = lookUp SLIT("-funbox-strict-fields")
opt_MaxWorkerArgs = lookup_def_int "-fmax-worker-args" (10::Int)
{-
The Prelude, for example is compiled with '-inpackage std'
-}
opt_InPackage = case lookup_str "-inpackage=" of
- Just p -> _PK_ p
- Nothing -> SLIT("Main") -- The package name if none is specified
+ Just p -> mkFastString p
+ Nothing -> FSLIT("Main") -- The package name if none is specified
-opt_EmitCExternDecls = lookUp SLIT("-femit-extern-decls")
-opt_EnsureSplittableC = lookUp SLIT("-fglobalise-toplev-names")
-opt_GranMacros = lookUp SLIT("-fgransim")
-opt_HiVersion = read cProjectVersionInt :: Int
+opt_EmitCExternDecls = lookUp FSLIT("-femit-extern-decls")
+opt_EnsureSplittableC = lookUp FSLIT("-fglobalise-toplev-names")
+opt_GranMacros = lookUp FSLIT("-fgransim")
+opt_HiVersion = read (cProjectVersionInt ++ cProjectPatchLevel) :: Int
opt_HistorySize = lookup_def_int "-fhistory-size" 20
-opt_IgnoreAsserts = lookUp SLIT("-fignore-asserts")
-opt_IgnoreIfacePragmas = lookUp SLIT("-fignore-interface-pragmas")
-opt_NoHiCheck = lookUp SLIT("-fno-hi-version-check")
-opt_OmitBlackHoling = lookUp SLIT("-dno-black-holing")
-opt_OmitInterfacePragmas = lookUp SLIT("-fomit-interface-pragmas")
-opt_RuntimeTypes = lookUp SLIT("-fruntime-types")
+opt_OmitBlackHoling = lookUp FSLIT("-dno-black-holing")
+opt_RuntimeTypes = lookUp FSLIT("-fruntime-types")
-- Simplifier switches
-opt_SimplNoPreInlining = lookUp SLIT("-fno-pre-inlining")
+opt_SimplNoPreInlining = lookUp FSLIT("-fno-pre-inlining")
-- NoPreInlining is there just to see how bad things
-- get if you don't do it!
-opt_SimplDoEtaReduction = lookUp SLIT("-fdo-eta-reduction")
-opt_SimplDoLambdaEtaExpansion = lookUp SLIT("-fdo-lambda-eta-expansion")
-opt_SimplCaseMerge = lookUp SLIT("-fcase-merge")
-opt_SimplExcessPrecision = lookUp SLIT("-fexcess-precision")
+opt_SimplExcessPrecision = lookUp FSLIT("-fexcess-precision")
-- Unfolding control
opt_UF_CreationThreshold = lookup_def_int "-funfolding-creation-threshold" (45::Int)
opt_UF_UseThreshold = lookup_def_int "-funfolding-use-threshold" (8::Int) -- Discounts can be big
opt_UF_FunAppDiscount = lookup_def_int "-funfolding-fun-discount" (6::Int) -- It's great to inline a fn
opt_UF_KeenessFactor = lookup_def_float "-funfolding-keeness-factor" (1.5::Float)
-opt_UF_UpdateInPlace = lookUp SLIT("-funfolding-update-in-place")
+opt_UF_UpdateInPlace = lookUp FSLIT("-funfolding-update-in-place")
-opt_UF_CheapOp = ( 1 :: Int) -- Only one instruction; and the args are charged for
opt_UF_DearOp = ( 4 :: Int)
-opt_NoPruneDecls = lookUp SLIT("-fno-prune-decls")
-opt_NoPruneTyDecls = lookUp SLIT("-fno-prune-tydecls")
-opt_Static = lookUp SLIT("-static")
-opt_Unregisterised = lookUp SLIT("-funregisterised")
-opt_EmitExternalCore = lookUp SLIT("-fext-core")
+opt_Static = lookUp FSLIT("-static")
+opt_Unregisterised = lookUp FSLIT("-funregisterised")
+opt_EmitExternalCore = lookUp FSLIT("-fext-core")
+
+-- Include full span info in error messages, instead of just the start position.
+opt_ErrorSpans = lookUp FSLIT("-ferror-spans")
\end{code}
%************************************************************************
"fall-strict",
"fdicts-strict",
"firrefutable-tuples",
- "fnumbers-strict",
"fparallel",
"fsmp",
+ "fflatten",
"fsemi-tagging",
- "ffoldr-build-on",
"flet-no-escape",
- "funfold-casms-in-hi-file",
- "fusagesp-on",
- "funbox-strict-fields",
"femit-extern-decls",
"fglobalise-toplev-names",
"fgransim",
- "fignore-asserts",
- "fignore-interface-pragmas",
"fno-hi-version-check",
"dno-black-holing",
"fno-method-sharing",
- "fno-monomorphism-restriction",
- "fomit-interface-pragmas",
"fruntime-types",
"fno-pre-inlining",
- "fdo-eta-reduction",
- "fdo-lambda-eta-expansion",
- "fcase-merge",
"fexcess-precision",
"funfolding-update-in-place",
"fno-prune-decls",
- "fno-prune-tydecls",
"static",
"funregisterised",
"fext-core",
- "frule-check"
+ "frule-check",
+ "frules-off",
+ "fcpr-off",
+ "ferror-spans"
]
|| any (flip prefixMatch f) [
"fcontext-stack",