-%
-% (c) The AQUA Project, Glasgow University, 1996-98
+
+% (c) The University of Glasgow, 1996-2000
%
\section[CmdLineOpts]{Things to do with command-line options}
\begin{code}
+
module CmdLineOpts (
- CoreToDo(..),
- SimplifierSwitch(..),
- StgToDo(..),
- SwitchResult(..),
- classifyOpts,
-
- intSwitchSet,
- switchIsOn,
-
- opt_AllStrict,
- opt_AllowOverlappingInstances,
- opt_AllowUndecidableInstances,
+ CoreToDo(..), buildCoreToDo, StgToDo(..),
+ SimplifierSwitch(..),
+ SimplifierMode(..), FloatOutSwitches(..),
+
+ HscTarget(..),
+ DynFlag(..), -- needed non-abstractly by DriverFlags
+ DynFlags(..),
+ PackageFlag(..),
+
+ 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_HscTarget, -- DynFlags -> HscTarget
+ dopt_OutName, -- DynFlags -> String
+ getOpts, -- (DynFlags -> [a]) -> IO [a]
+ getVerbFlag,
+ updOptLevel,
+
+ -- sets of warning opts
+ minusWOpts,
+ minusWallOpts,
+
+ -- Output style options
+ opt_PprUserLength,
+ opt_PprStyle_Debug,
+
+ -- profiling opts
opt_AutoSccsOnAllToplevs,
opt_AutoSccsOnExportedToplevs,
opt_AutoSccsOnIndividualCafs,
- opt_AutoSccsOnDicts,
- opt_CompilingPrelude,
- opt_D_dump_absC,
- opt_D_dump_asm,
- opt_D_dump_deriv,
- opt_D_dump_ds,
- opt_D_dump_flatC,
- opt_D_dump_inlinings,
- opt_D_dump_foreign,
- opt_D_dump_occur_anal,
- opt_D_dump_rdr,
- opt_D_dump_realC,
- opt_D_dump_rn,
- opt_D_dump_simpl,
- opt_D_dump_simpl_iterations,
- opt_D_dump_spec,
- opt_D_dump_stg,
- opt_D_dump_stranal,
- opt_D_dump_cpranal,
- opt_D_dump_worker_wrapper,
- opt_D_dump_tc,
- opt_D_show_passes,
- opt_D_show_rn_trace,
- opt_D_show_rn_imports,
- opt_D_simplifier_stats,
- opt_D_source_stats,
- opt_D_verbose_core2core,
- opt_D_verbose_stg2stg,
- opt_DictsStrict,
- opt_DoCoreLinting,
- opt_DoStgLinting,
- opt_DoSemiTagging,
- opt_DoEtaReduction,
+ opt_SccProfilingOn,
opt_DoTickyProfiling,
+
+ -- language opts
+ opt_DictsStrict,
+ opt_MaxContextReductionDepth,
+ opt_IrrefutableTuples,
+ opt_Parallel,
+ opt_SMP,
+ opt_RuntimeTypes,
+ opt_Flatten,
+
+ -- optimisation opts
+ opt_NoMethodSharing,
+ opt_NoStateHack,
+ opt_LiberateCaseThreshold,
+ opt_CprOff,
+ opt_RulesOff,
+ opt_SimplNoPreInlining,
+ opt_SimplExcessPrecision,
+ opt_MaxWorkerArgs,
+
+ -- Unfolding control
+ opt_UF_CreationThreshold,
+ opt_UF_UseThreshold,
+ opt_UF_FunAppDiscount,
+ opt_UF_KeenessFactor,
+ opt_UF_UpdateInPlace,
+ opt_UF_DearOp,
+
+ -- misc opts
+ opt_ErrorSpans,
opt_EmitCExternDecls,
opt_EnsureSplittableC,
- opt_FoldrBuildOn,
- opt_UnboxStrictFields,
- opt_GlasgowExts,
opt_GranMacros,
- opt_HiMap,
opt_HiVersion,
- opt_IgnoreIfacePragmas,
- opt_IgnoreAsserts,
- opt_IrrefutableTuples,
- opt_LiberateCaseThreshold,
- opt_MaxContextReductionDepth,
- opt_MultiParamClasses,
- opt_NoHiCheck,
- opt_NoImplicitPrelude,
- opt_NoPreInlining,
- opt_NumbersStrict,
+ opt_HistorySize,
opt_OmitBlackHoling,
- opt_OmitInterfacePragmas,
- opt_PprStyle_NoPrags,
- opt_PprStyle_Debug,
- opt_PprUserLength,
- opt_ProduceC,
- opt_ProduceHi,
- opt_ProduceS,
- opt_ProduceExportCStubs,
- opt_ProduceExportHStubs,
- opt_ReportCompile,
- opt_SccGroup,
- opt_SccProfilingOn,
- opt_SourceUnchanged,
opt_Static,
- opt_StgDoLetNoEscapes,
- opt_Parallel,
-
- opt_InterfaceUnfoldThreshold,
- opt_UnfoldCasms,
- opt_UnfoldingCreationThreshold,
- opt_UnfoldingConDiscount,
- opt_UnfoldingUseThreshold,
- opt_UnfoldingKeenessFactor,
-
- opt_Verbose,
-
- opt_WarnNameShadowing,
- opt_WarnUnusedMatches,
- opt_WarnUnusedBinds,
- opt_WarnUnusedImports,
- opt_WarnIncompletePatterns,
- opt_WarnOverlappingPatterns,
- opt_WarnSimplePatterns,
- opt_WarnTypeDefaults,
- opt_WarnMissingMethods,
- opt_WarnDuplicateExports,
- opt_WarnHiShadows,
- opt_WarnMissingSigs,
- opt_PruneTyDecls, opt_PruneInstDecls,
- opt_D_show_rn_stats
+ opt_Unregisterised,
+ opt_EmitExternalCore,
+ opt_PIC
) where
#include "HsVersions.h"
-import Array ( array, (//) )
-import GlaExts
-import Argv
+import {-# SOURCE #-} Packages (PackageState)
+import DriverPhases ( HscTarget(..) )
import Constants -- Default values for some flags
+import Util
+import FastString ( FastString, mkFastString )
+import Config
+import Maybes ( firstJust )
+
+import Panic ( ghcError, GhcException(UsageError) )
+import GLAEXTS
+import DATA_IOREF ( IORef, readIORef )
+import UNSAFE_IO ( unsafePerformIO )
+\end{code}
-import Maybes ( assocMaybe, firstJust, maybeToBool )
-import Panic ( panic, panic# )
+%************************************************************************
+%* *
+\subsection{Command-line options}
+%* *
+%************************************************************************
-#if __GLASGOW_HASKELL__ < 301
-import ArrBase ( Array(..) )
-#else
-import PrelArr ( Array(..) )
-#endif
-\end{code}
+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.
-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.)
+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
- | CoreDoFoldrBuildWorkerWrapper
- | CoreDoFoldrBuildWWAnal
- | CoreDoCPResult
+ | CoreDoSpecConstr
+ | CoreDoOldStrictness
+ | 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
- | 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
-
- | EssentialUnfoldingsOnly -- never mind the thresholds, only
- -- do unfoldings that *must* be done
- -- (to saturate constructors and primitives)
-
- | MaxSimplifierIterations Int
-
- | SimplNoLetFromCase -- used when turning off floating entirely
- | SimplNoLetFromApp -- (for experimentation only) WDP 95/10
- | SimplNoLetFromStrictLet
-
- | SimplCaseMerge
- | SimplPleaseClone
+ = 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{Dynamic command-line options}
+%* *
+%************************************************************************
+
+\begin{code}
+data DynFlag
+
+ -- debugging flags
+ = Opt_D_dump_cmm
+ | 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_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_cse
+ | Opt_D_dump_worker_wrapper
+ | Opt_D_dump_rn_trace
+ | Opt_D_dump_rn_stats
+ | Opt_D_dump_opt_cmm
+ | 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_hi
+ | Opt_D_dump_hi_diffs
+ | Opt_D_dump_minimal_imports
+ | Opt_DoCoreLinting
+ | Opt_DoStgLinting
+ | Opt_DoCmmLinting
+
+ | Opt_WarnIsError -- -Werror; makes warnings fatal
+ | Opt_WarnDuplicateExports
+ | Opt_WarnHiShadows
+ | Opt_WarnIncompletePatterns
+ | Opt_WarnIncompletePatternsRecUpd
+ | Opt_WarnMissingFields
+ | Opt_WarnMissingMethods
+ | Opt_WarnMissingSigs
+ | Opt_WarnNameShadowing
+ | Opt_WarnOverlappingPatterns
+ | Opt_WarnSimplePatterns
+ | Opt_WarnTypeDefaults
+ | Opt_WarnUnusedBinds
+ | Opt_WarnUnusedImports
+ | Opt_WarnUnusedMatches
+ | Opt_WarnDeprecations
+ | Opt_WarnDodgyImports
+ | Opt_WarnOrphans
+
+ -- language opts
+ | Opt_AllowOverlappingInstances
+ | Opt_AllowUndecidableInstances
+ | Opt_AllowIncoherentInstances
+ | Opt_MonomorphismRestriction
+ | Opt_GlasgowExts
+ | Opt_FFI
+ | Opt_PArr -- syntactic support for parallel arrays
+ | Opt_Arrows -- Arrow-notation syntax
+ | Opt_TH
+ | Opt_ImplicitParams
+ | Opt_Generics
+ | Opt_ImplicitPrelude
+ | Opt_ScopedTypeVariables
+
+ -- optimisation opts
+ | Opt_Strictness
+ | Opt_FullLaziness
+ | Opt_CSE
+ | Opt_IgnoreInterfacePragmas
+ | Opt_OmitInterfacePragmas
+ | Opt_DoLambdaEtaExpansion
+ | Opt_IgnoreAsserts
+ | Opt_DoEtaReduction
+ | Opt_CaseMerge
+ | Opt_UnboxStrictFields
+
+ deriving (Eq)
+
+data DynFlags = DynFlags {
+ coreToDo :: Maybe [CoreToDo], -- reserved for use with -Ofile
+ stgToDo :: [StgToDo],
+ hscTarget :: HscTarget,
+ 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
+ optLevel :: Int, -- optimisation level
+ maxSimplIterations :: Int, -- max simplifier iterations
+ ruleCheck :: Maybe String,
+ cppFlag :: Bool, -- preprocess with cpp?
+ ppFlag :: Bool, -- preprocess with a Haskell Pp?
+ recompFlag :: Bool, -- True <=> recompilation checker is on
+ stolen_x86_regs :: Int,
+ cmdlineHcIncludes :: [String], -- -#includes
+ importPaths :: [FilePath],
+
+ -- 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
+
+ -- ** Package flags
+ extraPkgConfs :: [FilePath],
+ -- The -package-conf flags given on the command line, in the order
+ -- they appeared.
+
+ readUserPkgConf :: Bool,
+ -- Whether or not to read the user package database
+ -- (-no-user-package-conf).
+
+ packageFlags :: [PackageFlag],
+ -- The -package and -hide-package flags from the command-line
+
+ -- ** Package state
+ pkgState :: PackageState,
+
+ -- hsc dynamic flags
+ flags :: [DynFlag]
+ }
+
+data PackageFlag
+ = ExposePackage String
+ | HidePackage String
+ | IgnorePackage String
+
+defaultHscTarget
+#if defined(i386_TARGET_ARCH) || defined(sparc_TARGET_ARCH) || defined(powerpc_TARGET_ARCH)
+ | cGhcWithNativeCodeGen == "YES" = HscAsm
+#endif
+ | otherwise = HscC
+
+defaultDynFlags = DynFlags {
+ coreToDo = Nothing, stgToDo = [],
+ hscTarget = defaultHscTarget,
+ hscOutName = "",
+ hscStubHOutName = "", hscStubCOutName = "",
+ extCoreName = "",
+ verbosity = 0,
+ optLevel = 0,
+ maxSimplIterations = 4,
+ ruleCheck = Nothing,
+ cppFlag = False,
+ ppFlag = False,
+ recompFlag = True,
+ stolen_x86_regs = 4,
+ cmdlineHcIncludes = [],
+ importPaths = ["."],
+ opt_L = [],
+ opt_P = [],
+ opt_F = [],
+ opt_c = [],
+ opt_a = [],
+ opt_m = [],
+#ifdef ILX
+ opt_I = [],
+ opt_i = [],
+#endif
+
+ extraPkgConfs = [],
+ readUserPkgConf = True,
+ packageFlags = [],
+ pkgState = error "pkgState",
+
+ flags = [
+ Opt_ImplicitPrelude,
+ Opt_MonomorphismRestriction,
+ 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_FullLaziness, -- ...and for full laziness
+
+ 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
+ }
+
+{-
+ Verbosity levels:
+
+ 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 -> Maybe [CoreToDo]
+dopt_CoreToDo = coreToDo
+
+dopt_StgToDo :: DynFlags -> [StgToDo]
+dopt_StgToDo = stgToDo
+
+dopt_OutName :: DynFlags -> String
+dopt_OutName = hscOutName
+
+dopt_HscTarget :: DynFlags -> HscTarget
+dopt_HscTarget = hscTarget
+
+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 -> (DynFlags -> [a]) -> [a]
+ -- We add to the options from the front, so we need to reverse the list
+getOpts dflags opts = reverse (opts dflags)
+
+getVerbFlag dflags
+ | verbosity dflags >= 3 = "-v"
+ | otherwise = ""
+
+-----------------------------------------------------------------------------
+-- Setting the optimisation level
+
+updOptLevel n dfs
+ = if (n >= 1)
+ then dfs2{ hscTarget = 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
+ full_laziness = dopt Opt_FullLaziness 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,
+
+ if full_laziness then CoreDoFloatOutwards (FloatOutSw False False)
+ else CoreDoNothing,
+
+ 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
+ ],
+
+ if full_laziness then
+ CoreDoFloatOutwards (FloatOutSw False -- Not lambdas
+ True) -- Float constants
+ else CoreDoNothing,
+ -- 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
+ ]
+ ]
+\end{code}
+
+%************************************************************************
+%* *
+\subsection{Warnings}
+%* *
+%************************************************************************
+
+\begin{code}
+standardWarnings
+ = [ Opt_WarnDeprecations,
+ Opt_WarnOverlappingPatterns,
+ Opt_WarnMissingFields,
+ Opt_WarnMissingMethods,
+ Opt_WarnDuplicateExports
+ ]
+
+minusWOpts
+ = standardWarnings ++
+ [ Opt_WarnUnusedBinds,
+ Opt_WarnUnusedMatches,
+ Opt_WarnUnusedImports,
+ Opt_WarnIncompletePatterns,
+ Opt_WarnDodgyImports
+ ]
+
+minusWallOpts
+ = minusWOpts ++
+ [ Opt_WarnTypeDefaults,
+ Opt_WarnNameShadowing,
+ Opt_WarnMissingSigs,
+ Opt_WarnHiShadows,
+ Opt_WarnOrphans
+ ]
\end{code}
%************************************************************************
%************************************************************************
\begin{code}
-lookUp :: FAST_STRING -> Bool
-lookup_int :: String -> Maybe Int
+-- v_Statis_hsc_opts is here to avoid a circular dependency with
+-- main/DriverState.
+GLOBAL_VAR(v_Static_hsc_opts, [], [String])
+
+lookUp :: FastString -> Bool
lookup_def_int :: String -> Int -> Int
lookup_def_float :: String -> Float -> Float
lookup_str :: String -> Maybe String
-lookUp sw = maybeToBool (assoc_opts sw)
-
-lookup_str sw = firstJust (map (startsWith sw) unpacked_opts)
+unpacked_static_opts = unsafePerformIO (readIORef v_Static_hsc_opts)
+packed_static_opts = map mkFastString unpacked_static_opts
-lookup_int sw = case (lookup_str sw) of
- Nothing -> Nothing
- Just xx -> Just (read xx)
+lookUp sw = sw `elem` packed_static_opts
+
+-- (lookup_str "foo") looks for the flag -foo=X or -fooX,
+-- and returns the string X
+lookup_str sw
+ = case firstJust (map (startsWith sw) unpacked_static_opts) of
+ Just ('=' : str) -> Just str
+ Just str -> Just str
+ Nothing -> Nothing
lookup_def_int sw def = case (lookup_str sw) of
Nothing -> def -- Use default
- Just xx -> read xx
+ Just xx -> try_read sw xx
lookup_def_float sw def = case (lookup_str sw) of
Nothing -> def -- Use default
- Just xx -> read xx
+ Just xx -> try_read sw xx
+
+
+try_read :: Read a => String -> String -> a
+-- (try_read sw str) tries to read s; if it fails, it
+-- bleats about flag sw
+try_read sw str
+ = case reads str of
+ ((x,_):_) -> x -- Be forgiving: ignore trailing goop, and alternative parses
+ [] -> ghcError (UsageError ("Malformed argument " ++ str ++ " for flag " ++ sw))
+ -- ToDo: hack alert. We should really parse the arugments
+ -- and announce errors in a more civilised way.
-assoc_opts = assocMaybe [ (a, True) | a <- argv ]
-unpacked_opts = map _UNPK_ argv
{-
Putting the compiler options into temporary at-files
a pure Win32 application where I think there's a command-line
length limit of 255. unpacked_opts understands the @ option.
-assoc_opts = assocMaybe [ (_PK_ a, True) | a <- unpacked_opts ]
-
unpacked_opts :: [String]
unpacked_opts =
concat $
map (expandAts) $
- map _UNPK_ argv
+ map unpackFS argv -- NOT ARGV any more: v_Static_hsc_opts
where
expandAts ('@':fname) = words (unsafePerformIO (readFile fname))
expandAts l = [l]
-}
\end{code}
-\begin{code}
-opt_AllStrict = lookUp SLIT("-fall-strict")
-opt_AllowOverlappingInstances = lookUp SLIT("-fallow-overlapping-instances")
-opt_AllowUndecidableInstances = lookUp SLIT("-fallow-undecidable-instances")
-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")
- {-
- It's a bit unfortunate to have to re-introduce this chap, but on Win32
- platforms we do need a way of distinguishing between the case when we're
- compiling a static version of the Prelude and one that's going to be
- put into a DLL. Why? Because the compiler's wired in modules need to
- be attributed as either coming from a DLL or not.
- -}
-opt_CompilingPrelude = lookUp SLIT("-fcompiling-prelude")
-opt_D_dump_absC = lookUp SLIT("-ddump-absC")
-opt_D_dump_asm = lookUp SLIT("-ddump-asm")
-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_inlinings = lookUp SLIT("-ddump-inlinings")
-opt_D_dump_foreign = lookUp SLIT("-ddump-foreign-stubs")
-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_simpl_iterations = lookUp SLIT("-ddump-simpl-iterations")
-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_worker_wrapper = lookUp SLIT("-ddump-workwrap")
-opt_D_dump_cpranal = lookUp SLIT("-ddump-cpranalyse")
-opt_D_dump_tc = lookUp SLIT("-ddump-tc")
-opt_D_show_passes = lookUp SLIT("-dshow-passes")
-opt_D_show_rn_trace = lookUp SLIT("-dshow-rn-trace")
-opt_D_show_rn_imports = lookUp SLIT("-dshow-rn-imports")
-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_DictsStrict = lookUp SLIT("-fdicts-strict")
-opt_DoCoreLinting = lookUp SLIT("-dcore-lint")
-opt_DoStgLinting = lookUp SLIT("-dstg-lint")
-opt_DoEtaReduction = lookUp SLIT("-fdo-eta-reduction")
-opt_DoSemiTagging = lookUp SLIT("-fsemi-tagging")
-opt_DoTickyProfiling = lookUp SLIT("-fticky-ticky")
-opt_EmitCExternDecls = lookUp SLIT("-femit-extern-decls")
-opt_EnsureSplittableC = lookUp SLIT("-fglobalise-toplev-names")
-opt_FoldrBuildOn = lookUp SLIT("-ffoldr-build-on")
-opt_UnboxStrictFields = lookUp SLIT("-funbox-strict-fields")
-opt_GranMacros = lookUp SLIT("-fgransim")
-opt_GlasgowExts = lookUp SLIT("-fglasgow-exts")
-opt_HiMap = lookup_str "-himap=" -- file saying where to look for .hi files
-opt_HiVersion = lookup_def_int "-fhi-version=" 0 -- what version we're compiling.
-opt_IgnoreIfacePragmas = lookUp SLIT("-fignore-interface-pragmas")
-opt_IgnoreAsserts = lookUp SLIT("-fignore-asserts")
-opt_IrrefutableTuples = lookUp SLIT("-firrefutable-tuples")
-opt_MaxContextReductionDepth = lookup_def_int "-fcontext-stack" mAX_CONTEXT_REDUCTION_DEPTH
-opt_MultiParamClasses = opt_GlasgowExts
-opt_NoHiCheck = lookUp SLIT("-fno-hi-version-check")
-opt_NoImplicitPrelude = lookUp SLIT("-fno-implicit-prelude")
-opt_NoPreInlining = lookUp SLIT("-fno-pre-inlining")
-opt_NumbersStrict = lookUp SLIT("-fnumbers-strict")
-opt_OmitBlackHoling = lookUp SLIT("-dno-black-holing")
-opt_OmitInterfacePragmas = lookUp SLIT("-fomit-interface-pragmas")
-opt_PprStyle_NoPrags = lookUp SLIT("-dppr-noprags")
-opt_PprStyle_Debug = lookUp SLIT("-dppr-debug")
-opt_PprUserLength = lookup_def_int "-dppr-user-length" 5 --ToDo: give this a name
-opt_ProduceC = lookup_str "-C="
-opt_ProduceS = lookup_str "-S="
-opt_ProduceExportCStubs = lookup_str "-F="
-opt_ProduceExportHStubs = lookup_str "-FH="
-opt_ProduceHi = lookup_str "-hifile=" -- the one to produce this time
-opt_ReportCompile = lookUp SLIT("-freport-compile")
-opt_SccProfilingOn = lookUp SLIT("-fscc-profiling")
-opt_SourceUnchanged = lookUp SLIT("-fsource-unchanged")
-opt_StgDoLetNoEscapes = lookUp SLIT("-flet-no-escape")
-opt_Parallel = lookUp SLIT("-fparallel")
-opt_Static = lookUp SLIT("-static")
-opt_SccGroup = lookup_str "-G="
-opt_Verbose = lookUp SLIT("-v")
-
-opt_UnfoldCasms = lookUp SLIT("-funfold-casms-in-hi-file")
-opt_InterfaceUnfoldThreshold = lookup_def_int "-funfolding-interface-threshold" iNTERFACE_UNFOLD_THRESHOLD
-opt_UnfoldingCreationThreshold = lookup_def_int "-funfolding-creation-threshold" uNFOLDING_CREATION_THRESHOLD
-opt_UnfoldingUseThreshold = lookup_def_int "-funfolding-use-threshold" uNFOLDING_USE_THRESHOLD
-opt_UnfoldingConDiscount = lookup_def_int "-funfolding-con-discount" uNFOLDING_CON_DISCOUNT_WEIGHT
-
-opt_LiberateCaseThreshold = lookup_def_int "-fliberate-case-threshold" lIBERATE_CASE_THRESHOLD
-opt_UnfoldingKeenessFactor = lookup_def_float "-funfolding-keeness-factor" uNFOLDING_KEENESS_FACTOR
-opt_WarnNameShadowing = lookUp SLIT("-fwarn-name-shadowing")
-opt_WarnHiShadows = lookUp SLIT("-fwarn-hi-shadowing")
-opt_WarnIncompletePatterns = lookUp SLIT("-fwarn-incomplete-patterns")
-opt_WarnOverlappingPatterns = lookUp SLIT("-fwarn-overlapping-patterns")
-opt_WarnSimplePatterns = lookUp SLIT("-fwarn-simple-patterns")
-opt_WarnTypeDefaults = lookUp SLIT("-fwarn-type-defaults")
-opt_WarnUnusedMatches = lookUp SLIT("-fwarn-unused-matches")
-opt_WarnUnusedBinds = lookUp SLIT("-fwarn-unused-binds")
-opt_WarnUnusedImports = lookUp SLIT("-fwarn-unused-imports")
-opt_WarnMissingMethods = lookUp SLIT("-fwarn-missing-methods")
-opt_WarnDuplicateExports = lookUp SLIT("-fwarn-duplicate-exports")
-opt_WarnMissingSigs = lookUp SLIT("-fwarn-missing-signatures")
-opt_PruneTyDecls = not (lookUp SLIT("-fno-prune-tydecls"))
-opt_PruneInstDecls = not (lookUp SLIT("-fno-prune-instdecls"))
-opt_D_show_rn_stats = lookUp SLIT("-dshow-rn-stats")
-
--- opt_UnfoldingOverrideThreshold = lookup_int "-funfolding-override-threshold"
-\end{code}
-
-\begin{code}
-classifyOpts :: ([CoreToDo], -- Core-to-Core processing spec
- [StgToDo]) -- STG-to-STG processing spec
-
-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)
-
- sep (opt1:opts) core_td stg_td
- = case (_UNPK_ opt1) of -- the non-"just match a string" options are at the end...
- ',' : _ -> sep opts core_td stg_td -- it is for the parser
-
- "-fsimplify" -> -- gather up SimplifierSwitches specially...
- simpl_sep opts defaultSimplSwitches 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)
- "-fworker-wrapper" -> CORE_TD(CoreDoWorkerWrapper)
- "-fspecialise" -> CORE_TD(CoreDoSpecialising)
- "-ffoldr-build-worker-wrapper" -> CORE_TD(CoreDoFoldrBuildWorkerWrapper)
- "-ffoldr-build-ww-anal" -> CORE_TD(CoreDoFoldrBuildWWAnal)
- "-fcpr-analyse" -> CORE_TD(CoreDoCPResult)
-
- "-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
- sep opts core_td stg_td
-
- ----------------
-
- 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
-
- -- The SimplifierSwitches should be delimited by "[" and "]".
-
- simpl_sep (opt1:opts) simpl_sw core_td stg_td
- = case (_UNPK_ opt1) of
- "[" -> simpl_sep opts simpl_sw 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...
- "-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-lambda-eta-expansion" -> SIMPL_SW(SimplDoLambdaEtaExpansion)
- "-fdo-foldr-build" -> SIMPL_SW(SimplDoFoldrBuild)
- "-fdo-arity-expand" -> SIMPL_SW(SimplDoArityExpand)
- "-fdo-inline-foldr-build" -> SIMPL_SW(SimplDoInlineFoldrBuild)
- "-fcase-of-case" -> SIMPL_SW(SimplCaseOfCase)
- "-fcase-merge" -> SIMPL_SW(SimplCaseMerge)
- "-flet-to-case" -> SIMPL_SW(SimplLetToCase)
- "-fpedantic-bottoms" -> SIMPL_SW(SimplPedanticBottoms)
- "-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)
- "-fclone-binds" -> SIMPL_SW(SimplPleaseClone)
-
- o | starts_with_msi -> SIMPL_SW(MaxSimplifierIterations (read after_msi))
- where
- maybe_msi = startsWith "-fmax-simplifier-iterations" o
- starts_with_msi = maybeToBool maybe_msi
- (Just after_msi) = maybe_msi
-
- _ -> -- NB: the driver is really supposed to handle bad options
- simpl_sep opts simpl_sw core_td stg_td
-\end{code}
-
%************************************************************************
%* *
-\subsection{Switch ordering}
+\subsection{Static options}
%* *
%************************************************************************
-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 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 EssentialUnfoldingsOnly = ILIT(19)
-tagOf_SimplSwitch (MaxSimplifierIterations _) = ILIT(21)
-tagOf_SimplSwitch SimplNoLetFromCase = ILIT(27)
-tagOf_SimplSwitch SimplNoLetFromApp = ILIT(28)
-tagOf_SimplSwitch SimplNoLetFromStrictLet = ILIT(29)
-tagOf_SimplSwitch SimplCaseMerge = ILIT(31)
-tagOf_SimplSwitch SimplPleaseClone = ILIT(32)
-
--- 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 SimplPleaseClone)
+-- debugging opts
+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 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_DictsStrict = lookUp FSLIT("-fdicts-strict")
+opt_IrrefutableTuples = lookUp FSLIT("-firrefutable-tuples")
+opt_MaxContextReductionDepth = lookup_def_int "-fcontext-stack" mAX_CONTEXT_REDUCTION_DEPTH
+opt_Parallel = lookUp FSLIT("-fparallel")
+opt_SMP = lookUp FSLIT("-fsmp")
+opt_Flatten = lookUp FSLIT("-fflatten")
+
+-- optimisation opts
+opt_NoStateHack = lookUp FSLIT("-fno-state-hack")
+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_MaxWorkerArgs = lookup_def_int "-fmax-worker-args" (10::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_OmitBlackHoling = lookUp FSLIT("-dno-black-holing")
+opt_RuntimeTypes = lookUp FSLIT("-fruntime-types")
+
+-- Simplifier switches
+opt_SimplNoPreInlining = lookUp FSLIT("-fno-pre-inlining")
+ -- NoPreInlining is there just to see how bad things
+ -- get if you don't do it!
+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 FSLIT("-funfolding-update-in-place")
+
+opt_UF_DearOp = ( 4 :: Int)
+
+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")
+
+opt_PIC = lookUp FSLIT("-fPIC")
\end{code}
%************************************************************************
%* *
-\subsection{Switch lookup}
+\subsection{List of static hsc flags}
%* *
%************************************************************************
\begin{code}
-isAmongSimpl :: [SimplifierSwitch] -> SimplifierSwitch -> SwitchResult
-
-isAmongSimpl on_switches -- Switches mentioned later occur *earlier*
- -- in the list; defaults right at the end.
- = let
- tidied_on_switches = foldl rm_dups [] on_switches
- -- The fold*l* ensures that we keep the latest switches;
- -- ie the ones that occur earliest in the list.
-
- sw_tbl :: Array Int SwitchResult
-
- sw_tbl = (array (0, lAST_SIMPL_SWITCH_TAG) -- bounds...
- all_undefined)
- // defined_elems
-
- 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
-#if __GLASGOW_HASKELL__ < 400
- Lift v -> v
-#else
- (# _, v #) -> v
-#endif
- }
- where
- mk_assoc_elem k@(MaxSimplifierIterations lvl) = (IBOX(tagOf_SimplSwitch k), SwInt lvl)
-
- 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
-\end{code}
-
-Default settings for simplifier switches
-
-\begin{code}
-defaultSimplSwitches = [MaxSimplifierIterations 1
- ]
+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",
+ "fparallel",
+ "fsmp",
+ "fflatten",
+ "fsemi-tagging",
+ "flet-no-escape",
+ "femit-extern-decls",
+ "fglobalise-toplev-names",
+ "fgransim",
+ "fno-hi-version-check",
+ "dno-black-holing",
+ "fno-method-sharing",
+ "fno-state-hack",
+ "fruntime-types",
+ "fno-pre-inlining",
+ "fexcess-precision",
+ "funfolding-update-in-place",
+ "static",
+ "funregisterised",
+ "fext-core",
+ "frule-check",
+ "frules-off",
+ "fcpr-off",
+ "ferror-spans",
+ "fPIC"
+ ]
+ || 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
-
-intSwitchSet :: (switch -> SwitchResult)
- -> (Int -> switch)
- -> Maybe Int
-
-intSwitchSet lookup_fn switch
- = case (lookup_fn (switch (panic "intSwitchSet"))) of
- SwInt int -> Just int
- _ -> Nothing
-\end{code}
\begin{code}
-startsWith, endsWith :: String -> String -> Maybe String
+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 cs ss
- = case (startsWith (reverse cs) (reverse ss)) of
- Nothing -> Nothing
- Just rs -> Just (reverse rs)
\end{code}