-%
-% (c) The AQUA Project, Glasgow University, 1996
+
+% (c) The University of Glasgow, 1996-2000
%
\section[CmdLineOpts]{Things to do with command-line options}
\begin{code}
-#include "HsVersions.h"
-module CmdLineOpts where
+module CmdLineOpts (
+ CoreToDo(..), StgToDo(..),
+ SimplifierSwitch(..),
+ SimplifierMode(..), FloatOutSwitches(..),
+
+ HscLang(..),
+ DynFlag(..), -- needed non-abstractly by DriverFlags
+ DynFlags(..),
+
+ v_Static_hsc_opts,
+
+ isStaticHscFlag,
+
+ -- Manipulating DynFlags
+ defaultDynFlags, -- DynFlags
+ dopt, -- DynFlag -> DynFlags -> Bool
+ dopt_set, dopt_unset, -- DynFlags -> DynFlag -> DynFlags
+ dopt_CoreToDo, -- DynFlags -> [CoreToDo]
+ dopt_StgToDo, -- DynFlags -> [StgToDo]
+ dopt_HscLang, -- DynFlags -> HscLang
+ dopt_OutName, -- DynFlags -> String
+ getOpts, -- (DynFlags -> [a]) -> IO [a]
+ setLang,
+ getVerbFlag,
+
+ -- Manipulating the DynFlags state
+ getDynFlags, -- IO DynFlags
+ setDynFlags, -- DynFlags -> IO ()
+ updDynFlags, -- (DynFlags -> DynFlags) -> IO ()
+ dynFlag, -- (DynFlags -> a) -> IO a
+ setDynFlag, unSetDynFlag, -- DynFlag -> IO ()
+ saveDynFlags, -- IO ()
+ restoreDynFlags, -- IO DynFlags
+
+ -- sets of warning opts
+ standardWarnings,
+ minusWOpts,
+ minusWallOpts,
+
+ -- Output style options
+ opt_PprStyle_NoPrags,
+ opt_PprStyle_RawTypes,
+ opt_PprUserLength,
+ opt_PprStyle_Debug,
+
+ -- profiling opts
+ 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_RuntimeTypes,
+
+ -- optimisation opts
+ opt_NoMethodSharing,
+ opt_DoSemiTagging,
+ opt_FoldrBuildOn,
+ opt_LiberateCaseThreshold,
+ opt_StgDoLetNoEscapes,
+ opt_UnfoldCasms,
+ opt_UsageSPOn,
+ opt_UnboxStrictFields,
+ opt_SimplNoPreInlining,
+ opt_SimplDoEtaReduction,
+ opt_SimplDoLambdaEtaExpansion,
+ opt_SimplCaseMerge,
+ opt_SimplExcessPrecision,
+ opt_MaxWorkerArgs,
+
+ -- Unfolding control
+ opt_UF_CreationThreshold,
+ opt_UF_UseThreshold,
+ opt_UF_FunAppDiscount,
+ opt_UF_KeenessFactor,
+ opt_UF_UpdateInPlace,
+ opt_UF_CheapOp,
+ opt_UF_DearOp,
+
+ -- misc opts
+ 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
+ ) where
-import PreludeGlaST -- bad bad bad boy, Will (_Array internals)
-import Argv
+#include "HsVersions.h"
-CHK_Ubiq() -- debugging consistency check
+import GlaExts
+import IOExts ( IORef, readIORef, writeIORef )
+import Constants -- Default values for some flags
+import Util
+import FastTypes
+import Config
-import Maybes ( assocMaybe, firstJust, maybeToBool, Maybe(..) )
-import Util ( startsWith, panic, panic#, assertPanic )
+import Maybes ( firstJust )
\end{code}
-A command-line {\em switch} is (generally) either on or off; e.g., the
-``verbose'' (-v) switch is either on or off. (The \tr{-G<group>}
-switch is an exception; it's set to a string, or nothing.)
+%************************************************************************
+%* *
+\subsection{Command-line options}
+%* *
+%************************************************************************
+
+The hsc command-line options are split into two categories:
+
+ - static flags
+ - dynamic flags
+
+Static flags are represented by top-level values of type Bool or Int,
+for example. They therefore have the same value throughout the
+invocation of hsc.
+
+Dynamic flags are represented by an abstract type, DynFlags, which is
+passed into hsc by the compilation manager for every compilation.
+Dynamic flags are those that change on a per-compilation basis,
+perhaps because they may be present in the OPTIONS pragma at the top
+of a module.
+
+Other flag-related blurb:
A list of {\em ToDo}s is things to be done in a particular part of
processing. A (fictitious) example for the Core-to-Core simplifier
%************************************************************************
\begin{code}
-data SwitchResult
- = SwBool Bool -- on/off
- | SwString FAST_STRING -- nothing or a String
- | SwInt Int -- nothing or an Int
-\end{code}
-
-\begin{code}
data CoreToDo -- These are diff core-to-core passes,
-- which may be invoked in any order,
-- as many times as you like.
= CoreDoSimplify -- The core-to-core simplifier.
- (SimplifierSwitch -> SwitchResult)
+ SimplifierMode
+ [SimplifierSwitch]
-- Each run of the simplifier can take a different
-- set of simplifier-specific flags.
- | CoreDoCalcInlinings1
- | CoreDoCalcInlinings2
| CoreDoFloatInwards
- | CoreDoFullLaziness
+ | CoreDoFloatOutwards FloatOutSwitches
| CoreLiberateCase
| CoreDoPrintCore
| CoreDoStaticArgs
| CoreDoStrictness
+ | CoreDoWorkerWrapper
| CoreDoSpecialising
- | CoreDoDeforest
- | CoreDoAutoCostCentres
- | CoreDoFoldrBuildWorkerWrapper
- | CoreDoFoldrBuildWWAnal
+ | CoreDoSpecConstr
+ | CoreDoUSPInf
+ | CoreDoCPResult
+ | CoreDoGlomBinds
+ | CoreCSE
+ | CoreDoRuleCheck Int{-CompilerPhase-} String -- Check for non-application of rules
+ -- matching this string
+
+ | CoreDoNothing -- useful when building up lists of these things
\end{code}
\begin{code}
data StgToDo
- = StgDoStaticArgs
- | StgDoUpdateAnalysis
- | StgDoLambdaLift
- | StgDoMassageForProfiling -- should be (next to) last
+ = StgDoMassageForProfiling -- should be (next to) last
-- There's also setStgVarInfo, but its absolute "lastness"
-- is so critical that it is hardwired in (no flag).
| D_stg_stats
\end{code}
\begin{code}
+data SimplifierMode -- See comments in SimplMonad
+ = SimplGently
+ | SimplPhase Int
+
data SimplifierSwitch
- = SimplOkToDupCode
- | SimplFloatLetsExposingWHNF
- | SimplOkToFloatPrimOps
- | SimplAlwaysFloatLetsFromLets
- | SimplDoCaseElim
- | SimplReuseCon
- | SimplCaseOfCase
- | SimplLetToCase
- | SimplMayDeleteConjurableIds
- | SimplPedanticBottoms -- see Simplifier for an explanation
- | SimplDoArityExpand -- expand arity of bindings
- | SimplDoFoldrBuild -- This is the per-simplification flag;
- -- see also FoldrBuildOn, used elsewhere
- -- in the compiler.
- | SimplDoInlineFoldrBuild
- -- inline foldr/build (*after* f/b rule is used)
-
- | IgnoreINLINEPragma
- | SimplDoLambdaEtaExpansion
- | SimplDoEtaReduction
-
- | EssentialUnfoldingsOnly -- never mind the thresholds, only
- -- do unfoldings that *must* be done
- -- (to saturate constructors and primitives)
-
- | ShowSimplifierProgress -- report counts on every interation
-
- | MaxSimplifierIterations Int
-
- | SimplUnfoldingUseThreshold Int -- per-simplification variants
- | SimplUnfoldingCreationThreshold Int
-
- | KeepSpecPragmaIds -- We normally *toss* Ids we can do without
- | KeepUnusedBindings
-
- | SimplNoLetFromCase -- used when turning off floating entirely
- | SimplNoLetFromApp -- (for experimentation only) WDP 95/10
- | SimplNoLetFromStrictLet
-
- | SimplDontFoldBackAppend
- -- we fold `foldr (:)' back into flip (++),
- -- but we *don't* want to do it when compiling
- -- List.hs, otherwise
- -- xs ++ ys = foldr (:) ys xs
- -- {- via our loopback -}
- -- xs ++ ys = xs ++ ys
- -- Oops!
- -- So only use this flag inside List.hs
- -- (Sigh, what a HACK, Andy. WDP 96/01)
+ = 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}
%************************************************************************
%* *
-\subsection{Classifying command-line options}
+\subsection{Dynamic command-line options}
%* *
%************************************************************************
\begin{code}
-lookup :: FAST_STRING -> Bool
-lookup_int :: String -> Maybe Int
-lookup_str :: String -> Maybe String
+data DynFlag
+
+ -- debugging flags
+ = Opt_D_dump_absC
+ | Opt_D_dump_asm
+ | Opt_D_dump_cpranal
+ | Opt_D_dump_deriv
+ | Opt_D_dump_ds
+ | Opt_D_dump_flatC
+ | Opt_D_dump_foreign
+ | Opt_D_dump_inlinings
+ | Opt_D_dump_occur_anal
+ | Opt_D_dump_parsed
+ | Opt_D_dump_realC
+ | Opt_D_dump_rn
+ | Opt_D_dump_simpl
+ | Opt_D_dump_simpl_iterations
+ | Opt_D_dump_spec
+ | Opt_D_dump_prep
+ | Opt_D_dump_stg
+ | Opt_D_dump_stranal
+ | 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_rn_stats
+ | Opt_D_dump_stix
+ | Opt_D_dump_simpl_stats
+ | Opt_D_dump_tc_trace
+ | Opt_D_dump_BCOs
+ | Opt_D_source_stats
+ | Opt_D_verbose_core2core
+ | Opt_D_verbose_stg2stg
+ | Opt_D_dump_hi
+ | Opt_D_dump_hi_diffs
+ | Opt_D_dump_minimal_imports
+ | Opt_DoCoreLinting
+ | Opt_DoStgLinting
+ | Opt_DoUSPLinting
+
+ | Opt_WarnDuplicateExports
+ | Opt_WarnHiShadows
+ | Opt_WarnIncompletePatterns
+ | Opt_WarnMissingFields
+ | Opt_WarnMissingMethods
+ | Opt_WarnMissingSigs
+ | Opt_WarnNameShadowing
+ | Opt_WarnOverlappingPatterns
+ | Opt_WarnSimplePatterns
+ | Opt_WarnTypeDefaults
+ | Opt_WarnUnusedBinds
+ | Opt_WarnUnusedImports
+ | Opt_WarnUnusedMatches
+ | Opt_WarnDeprecations
+ | Opt_WarnMisc
+
+ -- language opts
+ | Opt_AllowOverlappingInstances
+ | Opt_AllowUndecidableInstances
+ | Opt_AllowIncoherentInstances
+ | Opt_NoMonomorphismRestriction
+ | Opt_GlasgowExts
+ | Opt_Generics
+ | Opt_NoImplicitPrelude
+
+ deriving (Eq)
+
+data DynFlags = DynFlags {
+ coreToDo :: [CoreToDo],
+ stgToDo :: [StgToDo],
+ hscLang :: HscLang,
+ hscOutName :: String, -- name of the output file
+ hscStubHOutName :: String, -- name of the .stub_h output file
+ hscStubCOutName :: String, -- name of the .stub_c output file
+ extCoreName :: String, -- name of the .core output file
+ verbosity :: Int, -- verbosity level
+ cppFlag :: Bool, -- preprocess with cpp?
+ ppFlag :: Bool, -- preprocess with a Haskell Pp?
+ stolen_x86_regs :: Int,
+ cmdlineHcIncludes :: [String], -- -#includes
+
+ -- options for particular phases
+ opt_L :: [String],
+ opt_P :: [String],
+ opt_F :: [String],
+ opt_c :: [String],
+ opt_a :: [String],
+ opt_m :: [String],
+#ifdef ILX
+ opt_I :: [String],
+ opt_i :: [String],
+#endif
-lookup sw = maybeToBool (assoc_opts sw)
+ -- hsc dynamic flags
+ flags :: [DynFlag]
+ }
+
+data HscLang
+ = HscC
+ | HscAsm
+ | HscJava
+ | HscILX
+ | HscInterpreted
+ | HscNothing
+ deriving (Eq, Show)
+
+defaultDynFlags = DynFlags {
+ coreToDo = [], stgToDo = [],
+ hscLang = HscC,
+ hscOutName = "",
+ hscStubHOutName = "", hscStubCOutName = "",
+ extCoreName = "",
+ verbosity = 0,
+ cppFlag = False,
+ ppFlag = False,
+ stolen_x86_regs = 4,
+ cmdlineHcIncludes = [],
+ opt_L = [],
+ opt_P = [],
+ opt_F = [],
+ opt_c = [],
+ opt_a = [],
+ opt_m = [],
+#ifdef ILX
+ opt_I = [],
+ opt_i = [],
+#endif
+ flags = standardWarnings,
+ }
+
+{-
+ Verbosity levels:
-lookup_str sw = firstJust (map (startsWith sw) unpacked_opts)
+ 0 | print errors & warnings only
+ 1 | minimal verbosity: print "compiling M ... done." for each module.
+ 2 | equivalent to -dshow-passes
+ 3 | equivalent to existing "ghc -v"
+ 4 | "ghc -v -ddump-most"
+ 5 | "ghc -v -ddump-all"
+-}
+
+dopt :: DynFlag -> DynFlags -> Bool
+dopt f dflags = f `elem` (flags dflags)
+
+dopt_CoreToDo :: DynFlags -> [CoreToDo]
+dopt_CoreToDo = coreToDo
+
+dopt_StgToDo :: DynFlags -> [StgToDo]
+dopt_StgToDo = stgToDo
+
+dopt_OutName :: DynFlags -> String
+dopt_OutName = hscOutName
+
+dopt_HscLang :: DynFlags -> HscLang
+dopt_HscLang = hscLang
+
+dopt_set :: DynFlags -> DynFlag -> DynFlags
+dopt_set dfs f = dfs{ flags = f : flags dfs }
+
+dopt_unset :: DynFlags -> DynFlag -> DynFlags
+dopt_unset dfs f = dfs{ flags = filter (/= f) (flags dfs) }
+
+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 ""
+\end{code}
-lookup_int sw = case (lookup_str sw) of
- Nothing -> Nothing
- Just xx -> Just (read xx)
+-----------------------------------------------------------------------------
+-- Mess about with the mutable variables holding the dynamic arguments
-assoc_opts = assocMaybe [ (a, True) | a <- argv ]
-unpacked_opts = map _UNPK_ argv
-\end{code}
+-- v_InitDynFlags
+-- is the "baseline" dynamic flags, initialised from
+-- the defaults and command line options, and updated by the
+-- ':s' command in GHCi.
+--
+-- v_DynFlags
+-- is the dynamic flags for the current compilation. It is reset
+-- to the value of v_InitDynFlags before each compilation, then
+-- updated by reading any OPTIONS pragma in the current module.
\begin{code}
-opt_AllDemanded = lookup SLIT("-fall-demanded")
-opt_AllStrict = lookup SLIT("-fall-strict")
-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_CompilingPrelude = lookup SLIT("-prelude")
-opt_D_dump_absC = lookup SLIT("-ddump-absC")
-opt_D_dump_asm = lookup SLIT("-ddump-asm")
-opt_D_dump_deforest = lookup SLIT("-ddump-deforest")
-opt_D_dump_deriv = lookup SLIT("-ddump-deriv")
-opt_D_dump_ds = lookup SLIT("-ddump-ds")
-opt_D_dump_flatC = lookup SLIT("-ddump-flatC")
-opt_D_dump_occur_anal = lookup SLIT("-ddump-occur-anal")
-opt_D_dump_rdr = lookup SLIT("-ddump-rdr")
-opt_D_dump_realC = lookup SLIT("-ddump-realC")
-opt_D_dump_rn = lookup SLIT("-ddump-rn")
-opt_D_dump_simpl = lookup SLIT("-ddump-simpl")
-opt_D_dump_spec = lookup SLIT("-ddump-spec")
-opt_D_dump_stg = lookup SLIT("-ddump-stg")
-opt_D_dump_stranal = lookup SLIT("-ddump-stranal")
-opt_D_dump_tc = lookup SLIT("-ddump-tc")
-opt_D_show_passes = lookup SLIT("-dshow-passes")
-opt_D_simplifier_stats = lookup SLIT("-dsimplifier-stats")
-opt_D_source_stats = lookup SLIT("-dsource-stats")
-opt_D_verbose_core2core = lookup SLIT("-dverbose-simpl")
-opt_D_verbose_stg2stg = lookup SLIT("-dverbose-stg")
-opt_DoCoreLinting = lookup SLIT("-dcore-lint")
-opt_DoSemiTagging = lookup SLIT("-fsemi-tagging")
-opt_DoTickyProfiling = lookup SLIT("-fticky-ticky")
-opt_EmitArityChecks = lookup SLIT("-darity-checks")
-opt_FoldrBuildOn = lookup SLIT("-ffoldr-build-on")
-opt_FoldrBuildTrace = lookup SLIT("-ffoldr-build-trace")
-opt_ForConcurrent = lookup SLIT("-fconcurrent")
-opt_GlasgowExts = lookup SLIT("-fglasgow-exts")
-opt_Haskell_1_3 = lookup SLIT("-fhaskell-1.3")
-opt_HideBuiltinNames = lookup SLIT("-fhide-builtin-names")
-opt_HideMostBuiltinNames = lookup SLIT("-fmin-builtin-names")
-opt_IgnoreStrictnessPragmas = lookup SLIT("-fignore-strictness-pragmas")
-opt_IrrefutableEverything = lookup SLIT("-firrefutable-everything")
-opt_IrrefutableTuples = lookup SLIT("-firrefutable-tuples")
-opt_WarnNameShadowing = lookup SLIT("-fwarn-name-shadowing")
-opt_NumbersStrict = lookup SLIT("-fnumbers-strict")
-opt_OmitBlackHoling = lookup SLIT("-dno-black-holing")
-opt_OmitDefaultInstanceMethods = lookup SLIT("-fomit-default-instance-methods")
-opt_OmitInterfacePragmas = lookup SLIT("-fomit-interface-pragmas")
-opt_OmitReexportedInstances = lookup SLIT("-fomit-reexported-instances")
-opt_PprStyle_All = lookup SLIT("-dppr-all")
-opt_PprStyle_Debug = lookup SLIT("-dppr-debug")
-opt_PprStyle_User = lookup SLIT("-dppr-user")
-opt_ReportWhyUnfoldingsDisallowed= lookup SLIT("-freport-disallowed-unfoldings")
-opt_SccProfilingOn = lookup SLIT("-fscc-profiling")
-opt_ShowImportSpecs = lookup SLIT("-fshow-import-specs")
-opt_ShowPragmaNameErrs = lookup SLIT("-fshow-pragma-name-errs")
-opt_SigsRequired = lookup SLIT("-fsignatures-required")
-opt_SpecialiseAll = lookup SLIT("-fspecialise-all")
-opt_SpecialiseImports = lookup SLIT("-fspecialise-imports")
-opt_SpecialiseOverloaded = lookup SLIT("-fspecialise-overloaded")
-opt_SpecialiseTrace = lookup SLIT("-ftrace-specialisation")
-opt_SpecialiseUnboxed = lookup SLIT("-fspecialise-unboxed")
-opt_StgDoLetNoEscapes = lookup SLIT("-flet-no-escape")
-opt_Verbose = lookup SLIT("-v")
-opt_AsmTarget = lookup_str "-fasm="
-opt_SccGroup = lookup_str "-G="
-opt_ProduceC = lookup_str "-C="
-opt_ProduceS = lookup_str "-S="
-opt_ProduceHi = lookup_str "-hifile="
-opt_ProduceHu = lookup_str "-hufile="
-opt_MyHi = lookup_str "-myhifile=" -- the ones produced last time
-opt_MyHu = lookup_str "-myhufile=" -- for this module
-opt_EnsureSplittableC = lookup_str "-fglobalise-toplev-names="
-opt_UnfoldingUseThreshold = lookup_int "-funfolding-use-threshold"
-opt_UnfoldingCreationThreshold = lookup_int "-funfolding-creation-threshold"
-opt_UnfoldingOverrideThreshold = lookup_int "-funfolding-override-threshold"
-opt_ReturnInRegsThreshold = lookup_int "-freturn-in-regs-threshold"
-
-opt_NoImplicitPrelude = lookup SLIT("-fno-implicit-prelude")
-opt_IgnoreIfacePragmas = lookup SLIT("-fignore-interface-pragmas")
-
-opt_HuSuffix = case (lookup_str "-husuffix=") of { Nothing -> ".hu" ; Just x -> x }
-opt_HiSuffix = case (lookup_str "-hisuffix=") of { Nothing -> ".hi" ; Just x -> x }
-opt_SysHiSuffix = case (lookup_str "-syshisuffix=") of { Nothing -> ".hi" ; Just x -> x }
-
-opt_HiDirList = get_dir_list "-i="
-opt_SysHiDirList = get_dir_list "-j="
-
-get_dir_list tag
- = case (lookup_str tag) of
- Nothing -> [{-no dirs to search???-}]
- Just xs -> colon_split xs "" [] -- character and dir accumulators, both reversed...
- where
- colon_split [] cacc dacc = reverse (reverse cacc : dacc)
- colon_split (':' : xs) cacc dacc = colon_split xs "" (reverse cacc : dacc)
- colon_split ( x : xs) cacc dacc = colon_split xs (x : cacc) dacc
-
--- -hisuf, -hisuf-prelude
--- -fno-implicit-prelude
--- -fignore-interface-pragmas
--- importdirs and sysimport dirs
-\end{code}
+GLOBAL_VAR(v_InitDynFlags, defaultDynFlags, DynFlags)
+GLOBAL_VAR(v_DynFlags, defaultDynFlags, DynFlags)
-\begin{code}
-classifyOpts :: ([CoreToDo], -- Core-to-Core processing spec
- [StgToDo]) -- STG-to-STG processing spec
+setDynFlags :: DynFlags -> IO ()
+setDynFlags dfs = writeIORef v_DynFlags dfs
-classifyOpts = sep argv [] [] -- accumulators...
- where
- sep :: [FAST_STRING] -- cmd-line opts (input)
- -> [CoreToDo] -> [StgToDo] -- to_do accumulators
- -> ([CoreToDo], [StgToDo]) -- result
-
- sep [] core_td stg_td -- all done!
- = (reverse core_td, reverse stg_td)
-
-# define CORE_TD(to_do) sep opts (to_do:core_td) stg_td
-# define STG_TD(to_do) sep opts core_td (to_do:stg_td)
-# define IGNORE_ARG() sep opts core_td stg_td
-
- sep (opt1:opts) core_td stg_td
- =
- case (_UNPK_ opt1) of -- the non-"just match a string" options are at the end...
-
- ',' : _ -> IGNORE_ARG() -- it is for the parser
-
- "-fsimplify" -> -- gather up SimplifierSwitches specially...
- simpl_sep opts [] core_td stg_td
-
- "-fcalc-inlinings1"-> CORE_TD(CoreDoCalcInlinings1)
- "-fcalc-inlinings2"-> CORE_TD(CoreDoCalcInlinings2)
- "-ffloat-inwards" -> CORE_TD(CoreDoFloatInwards)
- "-ffull-laziness" -> CORE_TD(CoreDoFullLaziness)
- "-fliberate-case" -> CORE_TD(CoreLiberateCase)
- "-fprint-core" -> CORE_TD(CoreDoPrintCore)
- "-fstatic-args" -> CORE_TD(CoreDoStaticArgs)
- "-fstrictness" -> CORE_TD(CoreDoStrictness)
- "-fspecialise" -> CORE_TD(CoreDoSpecialising)
- "-fdeforest" -> CORE_TD(CoreDoDeforest)
- "-fadd-auto-sccs" -> CORE_TD(CoreDoAutoCostCentres)
- "-ffoldr-build-worker-wrapper" -> CORE_TD(CoreDoFoldrBuildWorkerWrapper)
- "-ffoldr-build-ww-anal" -> CORE_TD(CoreDoFoldrBuildWWAnal)
-
- "-fstg-static-args" -> STG_TD(StgDoStaticArgs)
- "-fupdate-analysis" -> STG_TD(StgDoUpdateAnalysis)
- "-dstg-stats" -> STG_TD(D_stg_stats)
- "-flambda-lift" -> STG_TD(StgDoLambdaLift)
- "-fmassage-stg-for-profiling" -> STG_TD(StgDoMassageForProfiling)
-
- _ -> -- NB: the driver is really supposed to handle bad options
- IGNORE_ARG()
-
- ----------------
-
- simpl_sep :: [FAST_STRING] -- cmd-line opts (input)
- -> [SimplifierSwitch] -- simplifier-switch accumulator
- -> [CoreToDo] -> [StgToDo] -- to_do accumulators
- -> ([CoreToDo], [StgToDo]) -- result
-
- -- "simpl_sep" tailcalls "sep" once it's seen one set
- -- of SimplifierSwitches for a CoreDoSimplify.
-
-#ifdef DEBUG
- simpl_sep input@[] simpl_sw core_td stg_td
- = panic "simpl_sep []"
-#endif
+saveDynFlags :: IO ()
+saveDynFlags = do dfs <- readIORef v_DynFlags
+ writeIORef v_InitDynFlags dfs
- -- The SimplifierSwitches should be delimited by "(" and ")".
-
- simpl_sep (opt1:opts) simpl_sw core_td stg_td
- = case (_UNPK_ opt1) of
- "(" -> ASSERT (null simpl_sw)
- simpl_sep opts [] core_td stg_td
- ")" -> let
- this_simpl = CoreDoSimplify (isAmongSimpl simpl_sw)
- in
- sep opts (this_simpl : core_td) stg_td
-
-# define SIMPL_SW(sw) simpl_sep opts (sw:simpl_sw) core_td stg_td
-
- -- the non-"just match a string" options are at the end...
- "-fshow-simplifier-progress" -> SIMPL_SW(ShowSimplifierProgress)
- "-fcode-duplication-ok" -> SIMPL_SW(SimplOkToDupCode)
- "-ffloat-lets-exposing-whnf" -> SIMPL_SW(SimplFloatLetsExposingWHNF)
- "-ffloat-primops-ok" -> SIMPL_SW(SimplOkToFloatPrimOps)
- "-falways-float-lets-from-lets" -> SIMPL_SW(SimplAlwaysFloatLetsFromLets)
- "-fdo-case-elim" -> SIMPL_SW(SimplDoCaseElim)
- "-fdo-eta-reduction" -> SIMPL_SW(SimplDoEtaReduction)
- "-fdo-lambda-eta-expansion" -> SIMPL_SW(SimplDoLambdaEtaExpansion)
- "-fdo-foldr-build" -> SIMPL_SW(SimplDoFoldrBuild)
- "-fdo-not-fold-back-append" -> SIMPL_SW(SimplDontFoldBackAppend)
- "-fdo-arity-expand" -> SIMPL_SW(SimplDoArityExpand)
- "-fdo-inline-foldr-build" -> SIMPL_SW(SimplDoInlineFoldrBuild)
- "-freuse-con" -> SIMPL_SW(SimplReuseCon)
- "-fcase-of-case" -> SIMPL_SW(SimplCaseOfCase)
- "-flet-to-case" -> SIMPL_SW(SimplLetToCase)
- "-fpedantic-bottoms" -> SIMPL_SW(SimplPedanticBottoms)
- "-fkeep-spec-pragma-ids" -> SIMPL_SW(KeepSpecPragmaIds)
- "-fkeep-unused-bindings" -> SIMPL_SW(KeepUnusedBindings)
- "-fmay-delete-conjurable-ids" -> SIMPL_SW(SimplMayDeleteConjurableIds)
- "-fessential-unfoldings-only" -> SIMPL_SW(EssentialUnfoldingsOnly)
- "-fignore-inline-pragma" -> SIMPL_SW(IgnoreINLINEPragma)
- "-fno-let-from-case" -> SIMPL_SW(SimplNoLetFromCase)
- "-fno-let-from-app" -> SIMPL_SW(SimplNoLetFromApp)
- "-fno-let-from-strict-let" -> SIMPL_SW(SimplNoLetFromStrictLet)
-
- o | starts_with_msi -> SIMPL_SW(MaxSimplifierIterations (read after_msi))
- | starts_with_suut -> SIMPL_SW(SimplUnfoldingUseThreshold (read after_suut))
- | starts_with_suct -> SIMPL_SW(SimplUnfoldingCreationThreshold (read after_suct))
- where
- maybe_suut = startsWith "-fsimpl-uf-use-threshold" o
- maybe_suct = startsWith "-fsimpl-uf-creation-threshold" o
- maybe_msi = startsWith "-fmax-simplifier-iterations" o
- starts_with_suut = maybeToBool maybe_suut
- starts_with_suct = maybeToBool maybe_suct
- starts_with_msi = maybeToBool maybe_msi
- (Just after_suut) = maybe_suut
- (Just after_suct) = maybe_suct
- (Just after_msi) = maybe_msi
-
- _ -> -- NB: the driver is really supposed to handle bad options
- simpl_sep opts simpl_sw core_td stg_td
+restoreDynFlags :: IO DynFlags
+restoreDynFlags = do dfs <- readIORef v_InitDynFlags
+ writeIORef v_DynFlags dfs
+ return dfs
+
+getDynFlags :: IO DynFlags
+getDynFlags = readIORef v_DynFlags
+
+updDynFlags :: (DynFlags -> DynFlags) -> IO ()
+updDynFlags f = do dfs <- readIORef v_DynFlags
+ writeIORef v_DynFlags (f dfs)
+
+dynFlag :: (DynFlags -> a) -> IO a
+dynFlag f = do dflags <- readIORef v_DynFlags; return (f dflags)
+
+setDynFlag, unSetDynFlag :: DynFlag -> IO ()
+setDynFlag f = updDynFlags (\dfs -> dopt_set dfs f)
+unSetDynFlag f = updDynFlags (\dfs -> dopt_unset dfs f)
\end{code}
+
%************************************************************************
%* *
-\subsection{Switch ordering}
+\subsection{Warnings}
%* *
%************************************************************************
-In spite of the @Produce*@ and @SccGroup@ constructors, these things
-behave just like enumeration types.
-
\begin{code}
-instance Eq SimplifierSwitch where
- a == b = tagOf_SimplSwitch a _EQ_ tagOf_SimplSwitch b
-
-instance Ord SimplifierSwitch where
- a < b = tagOf_SimplSwitch a _LT_ tagOf_SimplSwitch b
- a <= b = tagOf_SimplSwitch a _LE_ tagOf_SimplSwitch b
-
-tagOf_SimplSwitch SimplOkToDupCode =(ILIT(0) :: FAST_INT)
-tagOf_SimplSwitch SimplFloatLetsExposingWHNF = ILIT(1)
-tagOf_SimplSwitch SimplOkToFloatPrimOps = ILIT(2)
-tagOf_SimplSwitch SimplAlwaysFloatLetsFromLets = ILIT(3)
-tagOf_SimplSwitch SimplDoCaseElim = ILIT(4)
-tagOf_SimplSwitch SimplReuseCon = ILIT(5)
-tagOf_SimplSwitch SimplCaseOfCase = ILIT(6)
-tagOf_SimplSwitch SimplLetToCase = ILIT(7)
-tagOf_SimplSwitch SimplMayDeleteConjurableIds = ILIT(9)
-tagOf_SimplSwitch SimplPedanticBottoms = ILIT(10)
-tagOf_SimplSwitch SimplDoArityExpand = ILIT(11)
-tagOf_SimplSwitch SimplDoFoldrBuild = ILIT(12)
-tagOf_SimplSwitch SimplDoInlineFoldrBuild = ILIT(14)
-tagOf_SimplSwitch IgnoreINLINEPragma = ILIT(15)
-tagOf_SimplSwitch SimplDoLambdaEtaExpansion = ILIT(16)
-tagOf_SimplSwitch SimplDoEtaReduction = ILIT(18)
-tagOf_SimplSwitch EssentialUnfoldingsOnly = ILIT(19)
-tagOf_SimplSwitch ShowSimplifierProgress = ILIT(20)
-tagOf_SimplSwitch (MaxSimplifierIterations _) = ILIT(21)
-tagOf_SimplSwitch (SimplUnfoldingUseThreshold _) = ILIT(22)
-tagOf_SimplSwitch (SimplUnfoldingCreationThreshold _) = ILIT(23)
-tagOf_SimplSwitch KeepSpecPragmaIds = ILIT(24)
-tagOf_SimplSwitch KeepUnusedBindings = ILIT(25)
-tagOf_SimplSwitch SimplNoLetFromCase = ILIT(26)
-tagOf_SimplSwitch SimplNoLetFromApp = ILIT(27)
-tagOf_SimplSwitch SimplNoLetFromStrictLet = ILIT(28)
-tagOf_SimplSwitch SimplDontFoldBackAppend = ILIT(29)
--- If you add anything here, be sure to change lAST_SIMPL_SWITCH_TAG, too!
-
-tagOf_SimplSwitch _ = panic# "tagOf_SimplSwitch"
-
-lAST_SIMPL_SWITCH_TAG = IBOX(tagOf_SimplSwitch SimplDontFoldBackAppend)
+standardWarnings
+ = [ Opt_WarnDeprecations,
+ Opt_WarnOverlappingPatterns,
+ Opt_WarnMissingFields,
+ Opt_WarnMissingMethods,
+ Opt_WarnDuplicateExports
+ ]
+
+minusWOpts
+ = standardWarnings ++
+ [ Opt_WarnUnusedBinds,
+ Opt_WarnUnusedMatches,
+ Opt_WarnUnusedImports,
+ Opt_WarnIncompletePatterns,
+ Opt_WarnMisc
+ ]
+
+minusWallOpts
+ = minusWOpts ++
+ [ Opt_WarnTypeDefaults,
+ Opt_WarnNameShadowing,
+ Opt_WarnMissingSigs,
+ Opt_WarnHiShadows
+ ]
\end{code}
%************************************************************************
%* *
-\subsection{Switch lookup}
+\subsection{Classifying command-line options}
%* *
%************************************************************************
\begin{code}
-isAmongSimpl :: [SimplifierSwitch] -> SimplifierSwitch -> SwitchResult
+-- v_Statis_hsc_opts is here to avoid a circular dependency with
+-- main/DriverState.
+GLOBAL_VAR(v_Static_hsc_opts, [], [String])
+
+lookUp :: FAST_STRING -> Bool
+lookup_int :: String -> Maybe Int
+lookup_def_int :: String -> Int -> Int
+lookup_def_float :: String -> Float -> Float
+lookup_str :: String -> Maybe String
-isAmongSimpl on_switches
- = let
- tidied_on_switches = foldl rm_dups [] on_switches
+unpacked_static_opts = unsafePerformIO (readIORef v_Static_hsc_opts)
+packed_static_opts = map _PK_ unpacked_static_opts
- sw_tbl :: Array Int SwitchResult
+lookUp sw = sw `elem` packed_static_opts
+
+lookup_str sw = firstJust (map (startsWith sw) unpacked_static_opts)
+
+lookup_int sw = case (lookup_str sw) of
+ Nothing -> Nothing
+ Just xx -> Just (read xx)
+
+lookup_def_int sw def = case (lookup_str sw) of
+ Nothing -> def -- Use default
+ Just xx -> read xx
- sw_tbl = (array (0, lAST_SIMPL_SWITCH_TAG) -- bounds...
- all_undefined)
- // defined_elems
+lookup_def_float sw def = case (lookup_str sw) of
+ Nothing -> def -- Use default
+ Just xx -> read xx
- all_undefined = [ i := SwBool False | i <- [0 .. lAST_SIMPL_SWITCH_TAG ] ]
- defined_elems = map mk_assoc_elem tidied_on_switches
- in
- -- (avoid some unboxing, bounds checking, and other horrible things:)
- case sw_tbl of { _Array bounds_who_needs_'em stuff ->
- \ switch ->
- case (indexArray# stuff (tagOf_SimplSwitch switch)) of
- _Lift v -> v
- }
+{-
+ Putting the compiler options into temporary at-files
+ may turn out to be necessary later on if we turn hsc into
+ a pure Win32 application where I think there's a command-line
+ length limit of 255. unpacked_opts understands the @ option.
+
+unpacked_opts :: [String]
+unpacked_opts =
+ concat $
+ map (expandAts) $
+ map _UNPK_ argv -- NOT ARGV any more: v_Static_hsc_opts
where
- mk_assoc_elem k@(MaxSimplifierIterations lvl) = IBOX(tagOf_SimplSwitch k) := SwInt lvl
- mk_assoc_elem k@(SimplUnfoldingUseThreshold i) = IBOX(tagOf_SimplSwitch k) := SwInt i
- mk_assoc_elem k@(SimplUnfoldingCreationThreshold i) = IBOX(tagOf_SimplSwitch k) := SwInt i
-
- mk_assoc_elem k = IBOX(tagOf_SimplSwitch k) := SwBool True -- I'm here, Mom!
-
- -- cannot have duplicates if we are going to use the array thing
-
- rm_dups switches_so_far switch
- = if switch `is_elem` switches_so_far
- then switches_so_far
- else switch : switches_so_far
- where
- sw `is_elem` [] = False
- sw `is_elem` (s:ss) = (tagOf_SimplSwitch sw) _EQ_ (tagOf_SimplSwitch s)
- || sw `is_elem` ss
+ expandAts ('@':fname) = words (unsafePerformIO (readFile fname))
+ expandAts l = [l]
+-}
+\end{code}
+
+%************************************************************************
+%* *
+\subsection{Static options}
+%* *
+%************************************************************************
+
+\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_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")
+
+-- language opts
+opt_AllStrict = lookUp SLIT("-fall-strict")
+opt_DictsStrict = lookUp SLIT("-fdicts-strict")
+opt_IrrefutableTuples = lookUp SLIT("-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")
+
+-- optimisation opts
+opt_NoMethodSharing = lookUp SLIT("-fno-method-sharing")
+opt_DoSemiTagging = lookUp SLIT("-fsemi-tagging")
+opt_FoldrBuildOn = lookUp SLIT("-ffoldr-build-on")
+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 optional '-inpackage=P' flag tells what package
+ we are compiling this module for.
+ 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
+
+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_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")
+
+-- Simplifier switches
+opt_SimplNoPreInlining = lookUp SLIT("-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")
+
+-- 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_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")
+\end{code}
+
+%************************************************************************
+%* *
+\subsection{List of static hsc flags}
+%* *
+%************************************************************************
+
+\begin{code}
+isStaticHscFlag f =
+ f `elem` [
+ "fauto-sccs-on-all-toplevs",
+ "fauto-sccs-on-exported-toplevs",
+ "fauto-sccs-on-individual-cafs",
+ "fauto-sccs-on-dicts",
+ "fscc-profiling",
+ "fticky-ticky",
+ "fall-strict",
+ "fdicts-strict",
+ "firrefutable-tuples",
+ "fnumbers-strict",
+ "fparallel",
+ "fsmp",
+ "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"
+ ]
+ || any (flip prefixMatch f) [
+ "fcontext-stack",
+ "fliberate-case-threshold",
+ "fmax-worker-args",
+ "fhistory-size",
+ "funfolding-creation-threshold",
+ "funfolding-use-threshold",
+ "funfolding-fun-discount",
+ "funfolding-keeness-factor"
+ ]
\end{code}
%************************************************************************
%************************************************************************
+
\begin{code}
-switchIsOn :: (switch -> SwitchResult) -> switch -> Bool
-
-switchIsOn lookup_fn switch
- = case (lookup_fn switch) of
- SwBool False -> False
- _ -> True
-
-stringSwitchSet :: (switch -> SwitchResult)
- -> (FAST_STRING -> switch)
- -> Maybe FAST_STRING
-
-stringSwitchSet lookup_fn switch
- = case (lookup_fn (switch (panic "stringSwitchSet"))) of
- SwString str -> Just str
- _ -> Nothing
-
-intSwitchSet :: (switch -> SwitchResult)
- -> (Int -> switch)
- -> Maybe Int
-
-intSwitchSet lookup_fn switch
- = case (lookup_fn (switch (panic "intSwitchSet"))) of
- SwInt int -> Just int
- _ -> Nothing
+startsWith :: String -> String -> Maybe String
+-- startsWith pfx (pfx++rest) = Just rest
+
+startsWith [] str = Just str
+startsWith (c:cs) (s:ss)
+ = if c /= s then Nothing else startsWith cs ss
+startsWith _ [] = Nothing
+
+endsWith :: String -> String -> Maybe String
+endsWith cs ss
+ = case (startsWith (reverse cs) (reverse ss)) of
+ Nothing -> Nothing
+ Just rs -> Just (reverse rs)
\end{code}