[project @ 2001-07-23 10:54:46 by simonpj]
[ghc-hetmet.git] / ghc / compiler / main / CmdLineOpts.lhs
index 335e8a9..9a617e1 100644 (file)
@@ -1,4 +1,4 @@
-%
+
 % (c) The University of Glasgow, 1996-2000
 %
 \section[CmdLineOpts]{Things to do with command-line options}
@@ -14,7 +14,6 @@ module CmdLineOpts (
        HscLang(..),
        DynFlag(..),    -- needed non-abstractly by DriverFlags
        DynFlags(..),
-       defaultDynFlags,
 
        v_Static_hsc_opts,
 
@@ -22,19 +21,35 @@ module CmdLineOpts (
        switchIsOn,
        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
+
+       -- 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,
 
-       dopt,
-
-       -- other dynamic flags
-       dopt_CoreToDo,
-       dopt_StgToDo,
-       dopt_HscLang,
-       dopt_OutName,
-
        -- profiling opts
        opt_AutoSccsOnAllToplevs,
        opt_AutoSccsOnExportedToplevs,
@@ -51,8 +66,11 @@ module CmdLineOpts (
        opt_NumbersStrict,
        opt_Parallel,
        opt_SMP,
+       opt_NoMonomorphismRestriction,
+       opt_RuntimeTypes,
 
        -- optimisation opts
+       opt_NoMethodSharing,
        opt_DoSemiTagging,
        opt_FoldrBuildOn,
        opt_LiberateCaseThreshold,
@@ -63,13 +81,11 @@ module CmdLineOpts (
        opt_SimplNoPreInlining,
        opt_SimplDoEtaReduction,
        opt_SimplDoLambdaEtaExpansion,
-       opt_SimplCaseOfCase,
        opt_SimplCaseMerge,
-       opt_SimplPedanticBottoms,
        opt_SimplExcessPrecision,
+       opt_MaxWorkerArgs,
 
        -- Unfolding control
-       opt_UF_HiFileThreshold,
        opt_UF_CreationThreshold,
        opt_UF_UseThreshold,
        opt_UF_FunAppDiscount,
@@ -93,14 +109,15 @@ module CmdLineOpts (
        opt_NoPruneTyDecls,
        opt_NoPruneDecls,
        opt_Static,
-       opt_Unregisterised
+       opt_Unregisterised,
+       opt_EmitExternalCore
     ) where
 
 #include "HsVersions.h"
 
 import Array   ( array, (//) )
 import GlaExts
-import IOExts  ( IORef, readIORef )
+import IOExts  ( IORef, readIORef, writeIORef )
 import Constants       -- Default values for some flags
 import Util
 import FastTypes
@@ -179,6 +196,7 @@ data CoreToDo               -- These are diff core-to-core passes,
   | CoreDoStrictness
   | CoreDoWorkerWrapper
   | CoreDoSpecialising
+  | CoreDoSpecConstr
   | CoreDoUSPInf
   | CoreDoCPResult
   | CoreDoGlomBinds
@@ -242,7 +260,8 @@ data DynFlag
    | Opt_D_dump_rn_stats
    | Opt_D_dump_stix
    | Opt_D_dump_simpl_stats
-   | Opt_D_dump_InterpSyn
+   | Opt_D_dump_tc_trace
+   | Opt_D_dump_BCOs
    | Opt_D_source_stats
    | Opt_D_verbose_core2core
    | Opt_D_verbose_stg2stg
@@ -267,6 +286,7 @@ data DynFlag
    | Opt_WarnUnusedImports
    | Opt_WarnUnusedMatches
    | Opt_WarnDeprecations
+   | Opt_WarnMisc
 
    -- language opts
    | Opt_AllowOverlappingInstances
@@ -275,23 +295,56 @@ data DynFlag
    | Opt_Generics
    | Opt_NoImplicitPrelude 
 
-   -- misc
-   | Opt_ReportCompile
    deriving (Eq)
 
 data DynFlags = DynFlags {
-  coreToDo   :: [CoreToDo],
-  stgToDo    :: [StgToDo],
-  hscLang    :: HscLang,
-  hscOutName :: String,  -- name of the file in which to place output
-  verbosity  :: Int,    -- verbosity level
-  flags      :: [DynFlag]
+  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?
+  stolen_x86_regs      :: Int,         
+  cmdlineHcIncludes    :: [String],    -- -#includes
+
+  -- options for particular phases
+  opt_L                        :: [String],
+  opt_P                        :: [String],
+  opt_c                        :: [String],
+  opt_a                        :: [String],
+  opt_m                        :: [String],
+
+  -- hsc dynamic flags
+  flags                :: [DynFlag]
  }
 
+data HscLang
+  = HscC
+  | HscAsm
+  | HscJava
+  | HscILX
+  | HscInterpreted
+    deriving (Eq, Show)
+
 defaultDynFlags = DynFlags {
   coreToDo = [], stgToDo = [], 
-  hscLang = HscC, hscOutName = "", 
-  verbosity = 0, flags = []
+  hscLang = HscC, 
+  hscOutName = "", 
+  hscStubHOutName = "", hscStubCOutName = "",
+  extCoreName = "",
+  verbosity = 0, 
+  cppFlag              = False,
+  stolen_x86_regs      = 4,
+  cmdlineHcIncludes    = [],
+  opt_L                        = [],
+  opt_P                        = [],
+  opt_c                        = [],
+  opt_a                        = [],
+  opt_m                        = [],
+  flags = standardWarnings,
   }
 
 {- 
@@ -317,15 +370,92 @@ dopt_StgToDo = stgToDo
 dopt_OutName :: DynFlags -> String
 dopt_OutName = hscOutName
 
-data HscLang
-  = HscC
-  | HscAsm
-  | HscJava
-  | HscInterpreted
-    deriving (Eq, Show)
-
 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) }
+\end{code}
+
+-----------------------------------------------------------------------------
+-- Mess about with the mutable variables holding the dynamic arguments
+
+-- 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}
+GLOBAL_VAR(v_InitDynFlags, defaultDynFlags, DynFlags)
+GLOBAL_VAR(v_DynFlags,     defaultDynFlags, DynFlags)
+
+setDynFlags :: DynFlags -> IO ()
+setDynFlags dfs = writeIORef v_DynFlags dfs
+
+saveDynFlags :: IO ()
+saveDynFlags = do dfs <- readIORef v_DynFlags
+                 writeIORef v_InitDynFlags dfs
+
+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{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_WarnMisc
+      ]
+
+minusWallOpts
+    = minusWOpts ++
+      [        Opt_WarnTypeDefaults,
+       Opt_WarnNameShadowing,
+       Opt_WarnMissingSigs,
+       Opt_WarnHiShadows
+      ]
 \end{code}
 
 %************************************************************************
@@ -405,6 +535,7 @@ opt_DoTickyProfiling                = lookUp  SLIT("-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_MaxContextReductionDepth   = lookup_def_int "-fcontext-stack" mAX_CONTEXT_REDUCTION_DEPTH
@@ -413,18 +544,20 @@ 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_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 '-package prelude'
+   The Prelude, for example is compiled with '-inpackage std'
 -}
 opt_InPackage                  = case lookup_str "-inpackage=" of
                                    Just p  -> _PK_ p
@@ -440,20 +573,18 @@ 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")
+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_SimplCaseOfCase            = lookUp SLIT("-fcase-of-case")
-opt_SimplCaseMerge             = lookUp SLIT("-fcase-merge")
-opt_SimplPedanticBottoms       = lookUp SLIT("-fpedantic-bottoms")
-opt_SimplExcessPrecision       = lookUp SLIT("-fexcess-precision")
+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_HiFileThreshold         = lookup_def_int "-funfolding-interface-threshold" (45::Int)
 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
@@ -463,10 +594,11 @@ 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_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}
 
 %************************************************************************
@@ -502,28 +634,28 @@ isStaticHscFlag f =
        "fignore-asserts",
        "fignore-interface-pragmas",
        "fno-hi-version-check",
-       "fno-implicit-prelude",
        "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-of-case",
        "fcase-merge",
-       "fpedantic-bottoms",
        "fexcess-precision",
        "funfolding-update-in-place",
-       "freport-compile",
        "fno-prune-decls",
        "fno-prune-tydecls",
        "static",
-       "funregisterised"
+       "funregisterised",
+       "fext-core"
        ]
   || any (flip prefixMatch f) [
        "fcontext-stack",
        "fliberate-case-threshold",
+       "fmax-worker-args",
        "fhistory-size",
-       "funfolding-interface-threshold",
        "funfolding-creation-threshold",
        "funfolding-use-threshold",
        "funfolding-fun-discount",