CP RM CONTEXT_DIFF
-WAY_*_NAME WAY_*_HC_OPTS
+WAY_*_NAME WAY_*_REAL_OPTS
LeadingUnderscore
+GhcWithRegisterised
+
\end{verbatim}
Establish what executables to run for the various phases, what the
sub setupOptFlags {
$Oopt_MaxSimplifierIterations = '-fmax-simplifier-iterations4';
$Oopt_PedanticBottoms = '-fpedantic-bottoms'; # ON by default
- $Oopt_MonadEtaExpansion = '';
$Oopt_FinalStgProfilingMassage = '';
$Oopt_StgStats = '';
$Oopt_DoSpecialise = '-fspecialise';
$Oopt_FoldrBuild = 0; # *Off* by default!
- $Oopt_FB_Support = ''; # was '-fdo-arity-expand';
-# $Oopt_FoldrBuildWW = 0; # Off by default
- $Oopt_FoldrBuildInline = ''; # was '-fdo-inline-foldr-build';
$Oopt_UsageSPInf = ''; # Off by default
- $Oopt_ShowSimplifierProgress = '';
} # end of setupOptFlags
# Assign defaults to these right away.
'-fwarn-missing-methods',
'-fwarn-duplicate-exports');
@MinusWOpts = (@StandardWarnings,
- '-fwarn-incomplete-patterns',
'-fwarn-unused-binds',
+ '-fwarn-unused-matches',
+ '-fwarn-incomplete-patterns',
'-fwarn-unused-imports');
@MinusWallOpts = (@MinusWOpts,
- '-fwarn-unused-matches',
'-fwarn-type-defaults',
'-fwarn-name-shadowing',
'-fwarn-missing-signatures');
$BuildTag = ''; # default is sequential build w/ Appel-style GC
%BuildDescr = (# system ways begin
- '', 'normal sequential',
- '_p', "$WAY_p_NAME",
- '_t', "$WAY_t_NAME",
- '_u', "$WAY_u_NAME",
- '_mp', "$WAY_mp_NAME",
- '_mg', "$WAY_mg_NAME",
+ '', 'Normal Sequential',
+ '_p', "Profiling",
+ '_t', "Ticky-ticky Profiling",
+ '_u', "Unregisterised",
+ '_mp', "Parallel",
+ '_mg', "Gransim",
# system ways end
'_a', "$WAY_a_NAME",
'_b', "$WAY_b_NAME",
#
%SetupOpts =
(
- '_a', "$WAY_a_HC_OPTS",
- '_b', "$WAY_b_HC_OPTS",
- '_c', "$WAY_c_HC_OPTS",
- '_d', "$WAY_d_HC_OPTS",
- '_e', "$WAY_e_HC_OPTS",
- '_f', "$WAY_f_HC_OPTS",
- '_g', "$WAY_g_HC_OPTS",
- '_h', "$WAY_h_HC_OPTS",
- '_i', "$WAY_i_HC_OPTS",
- '_j', "$WAY_j_HC_OPTS",
- '_k', "$WAY_k_HC_OPTS",
- '_l', "$WAY_l_HC_OPTS",
- '_m', "$WAY_m_HC_OPTS",
- '_n', "$WAY_n_HC_OPTS",
- '_o', "$WAY_o_HC_OPTS",
- '_A', "$WAY_A_HC_OPTS",
- '_B', "$WAY_B_HC_OPTS",
+ '_a', "$WAY_a_REAL_OPTS",
+ '_b', "$WAY_b_REAL_OPTS",
+ '_c', "$WAY_c_REAL_OPTS",
+ '_d', "$WAY_d_REAL_OPTS",
+ '_e', "$WAY_e_REAL_OPTS",
+ '_f', "$WAY_f_REAL_OPTS",
+ '_g', "$WAY_g_REAL_OPTS",
+ '_h', "$WAY_h_REAL_OPTS",
+ '_i', "$WAY_i_REAL_OPTS",
+ '_j', "$WAY_j_REAL_OPTS",
+ '_k', "$WAY_k_REAL_OPTS",
+ '_l', "$WAY_l_REAL_OPTS",
+ '_m', "$WAY_m_REAL_OPTS",
+ '_n', "$WAY_n_REAL_OPTS",
+ '_o', "$WAY_o_REAL_OPTS",
+ '_A', "$WAY_A_REAL_OPTS",
+ '_B', "$WAY_B_REAL_OPTS",
# system ways
- '_p', "$WAY_p_HC_OPTS",
- '_t', "$WAY_t_HC_OPTS",
- '_u', "$WAY_u_HC_OPTS",
- '_mp', "$WAY_mp_HC_OPTS",
- '_mg', "$WAY_mg_HC_OPTS");
-
-\end{code}
-
-Import/include directories (\tr{-I} options) are sufficiently weird to
-require special handling.
-
-\begin{code}
-@Import_dir = ('.'); #-i things
-@Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
+ '_p', "-fscc-profiling -DPROFILING -optc-DPROFILING",
+ '_t', "-fticky-ticky -DTICKY_TICKY -optc-DTICKY_TICKY",
+ '_u', "-optc-DNO_REGS -optc-DUSE_MINIINTERPRETER -fno-asm-mangling -funregisterised",
+ '_mp', "-fstack-check -fparallel -D__PARALLEL_HASKELL__ -optc-DPAR",
+ '_mg', "-fstack-check -fconcurrent -fgransim -D__GRANSIM__ -D__CONCURRENT_HASKELL__ -optc-DCONCURRENT -optc-DGRAN");
# where to look for interface files (system hi's, i.e., prelude and syslibs)
@SysImport_dir = ( $INSTALLING )
, "-D__CONCURRENT_HASKELL__"
);
-@UserLibrary_dir= (); #-L things;...
-@UserLibrary = (); #-l things asked for by the user
@SysLibrary_dir = ( ( $INSTALLING ) #-syslib things supplied by the system
? $InstLibDirGhc
, "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std/cbits"
)
);
-@SysLibrary = (); # will be built up as we go along
$TopClosureFile # defaults to 1.2 one; will be mangled later
= '';
# reset the following options:
# RTS flags to use while compiling
@HsC_rts_flags = ();
-@HsP_flags = (); # these are the flags destined solely for
- # the flex/yacc parser
@HsC_flags = ();
@HsC_antiflags = ();
\end{code}
@Import_dir = ('.'); #-i things
@Include_dir = ('.'); #-I things; other default(s) stuck on AFTER option processing
+@UserLibrary_dir= (); #-L things;...
+@UserLibrary = (); #-l things asked for by the user
+@SysLibrary = (); # will be built up as we go along
\end{code}
We are given a list of files with various presumably-known suffixes
$TICKYing = ''; # set to t if compiling for ticky-ticky profiling
$PARing = ''; # set to p if compiling for PAR
$GRANing = ''; # set to g if compiling for GRAN
+$UNREGing = ($GhcWithRegisterised eq 'YES') ? '' : 'u';
$Specific_hi_file = ''; # set by -ohi <file>; "-" for stdout
$Specific_dump_file = ''; # set by -odump <file>; "-" for stdout
$Using_dump_file = 0;
sub setupOptimiseFlags {
+ # this pass-ordering sequence was agreed by Simon and Andr\'e
+ # (WDP 94/07, 94/11).
+
@HsC_minusNoO_flags
- = ( '-fsimplify',
- '[',
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
-# '-fdo-lambda-eta-expansion', # too complicated
- '-freuse-con',
-# '-flet-to-case', # no strictness analysis, so...
- $Oopt_PedanticBottoms,
-# $Oopt_MonadEtaExpansion, # no thanks
-
-# These two work fine, if you really want no simplification at all,
-# for bizarre test reasons. But you get really terrible code if you use them,
-# for example: let x = e in x
-# with dozens of redundant thunks etc. So I'm leaving them out.
-#
-# '-fsimpl-uf-use-threshold0',
-# '-fessential-unfoldings-only',
-
- #
- # The presence of -fclone-binds is *temporary* to work around
- # the fact that the desugarer in 3.0{2.3} does generate
- # bindings with identical ids, and the type checker doesn't perform
- # properly cloned type substitutions. Instead, we make sure that all
- # binders are cloned first time through the simplifier.
- #
- # Will be properly fixed in the `new compiler` I hear, at which point
- # the cloning can be turned off here.
- #
- # Let's find out..
- #'-fclone-binds',
-
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
+ = (
+ '-fsimplify',
+ '[',
+ '-finline-phase2',
+ $Oopt_MaxSimplifierIterations,
']',
- $Oopt_AddAutoSccs,
-# '-ffull-laziness', # removed 95/04 WDP following Andr\'e's lead
+ $Oopt_AddAutoSccs,
$Oopt_FinalStgProfilingMassage
);
@HsC_minusO_flags # NOTE: used for *both* -O and -O2 (some conditional bits)
= (
+ '-ffoldr-build-on',
+
'-fdo-eta-reduction',
+ '-fdo-lambda-eta-expansion',
+ '-fcase-of-case',
+ '-fcase-merge',
+ '-flet-to-case',
+ $Oopt_PedanticBottoms,
# initial simplify: mk specialiser happy: minimum effort please
+
'-fsimplify',
'[',
- $Oopt_FB_Support,
- '-fkeep-spec-pragma-ids', # required before specialisation
-
-# I don't understand why we want -fessential-unfoldings-only here
-# If we have it, the following nasty thing happens:
-# f = E
-# g* = f
-# ...g...
-# where "*" means exported.
-# In the essential-unfoldings pass we still substitute f for g
-# but we don't substitute E for f first. So we get
-# f = E
-# g* = f
-# ...f...
-# The g=f will get reverse-substituted later, but it's untidy. --SLPJ
-#
-# SDM: Here's why it's necessary.
-#
-# If we unfold in the first pass before the specialiser is run
-# we miss opportunities for specialisation because eg. wrappers
-# have been inlined for specialisable functions.
-#
-# This shows up in PrelArr.lhs - the specialised instance for newArray
-# calls the generic rangeSize, because rangeSize is strict and is
-# replaced by its wrapper by the simplifier.
+ '-finline-phase0', # Don't inline anything till full laziness has bitten
+ # In particular, inlining wrappers inhibits floating
+ # e.g. ...(case f x of ...)...
+ # ==> ...(case (case x of I# x# -> fw x#) of ...)...
+ # ==> ...(case x of I# x# -> case fw x# of ...)...
+ # and now the redex (f x) isn't floatable any more
+ '-fmax-simplifier-iterations2',
+ ']',
- '-fessential-unfoldings-only',
- '-fsimpl-uf-use-threshold0',
+ # Specialisation is best done before full laziness
+ # so that overloaded functions have all their dictionary lambdas manifest
+ ($Oopt_DoSpecialise) ? ( $Oopt_DoSpecialise, ) : (),
+ '-ffull-laziness',
+ '-ffloat-inwards',
- # See remark re: cloning in defn of minusnotO
- '-fclone-binds',
+# '-fsimplify',
+# '[',
+# # Run the simplifier before specialising, so that overloaded functions
+# # look like f = \d -> ...
+# # (Full laziness may lift out something hiding the \d
+# '-finline-phase1',
+# '-fmax-simplifier-iterations1',
+# ']',
- '-fdo-case-elim',
- '-fmax-simplifier-iterations1',
- $Oopt_PedanticBottoms,
- ']',
- ($Oopt_DoSpecialise) ? (
- $Oopt_DoSpecialise,
- ) : (),
+ '-fsimplify',
+ '[',
+ '-finline-phase1',
+ # Want to run with inline phase 1 after the specialiser to give
+ # maximum chance for fusion to work before we inline build/augment
+ # in phase 2. This made a difference in 'ansi' where an overloaded
+ # function wasn't inlined till too late.
+ $Oopt_MaxSimplifierIterations,
+ ']',
$Oopt_UsageSPInf, # infer usage information here in case we need it later.
# (add more of these where you need them --KSW 1999-04)
- '-fsimplify', # need dependency anal after specialiser ...
- '[', # need tossing before calc-inlinings ...
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
- '-fcase-merge',
-# '-fdo-eta-reduction',
- '-fdo-lambda-eta-expansion',
- '-freuse-con',
- $Oopt_PedanticBottoms,
- $Oopt_MonadEtaExpansion,
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
- #
- # The presence of -fclone-binds is *crucial* here as
- # -ffull-laziness (which we're about to do next) floats
- # bindings outwards, so we better make sure that this
- # doesn't result in the floating out of bindings
- # with identical uniques, i.e., -ffull-laziness needs
- # to be preceeded by a simplifier pass with -fclone-binds
- # set.
- '-fclone-binds',
- ']',
-
-# ($Oopt_FoldrBuildWW) ? (
-# '-ffoldr-build-ww-anal',
-# '-ffoldr-build-worker-wrapper',
-# '-fsimplify',
-# '[',
-# $Oopt_FB_Support,
-# '-ffloat-lets-exposing-whnf',
-# '-ffloat-primops-ok',
-# '-fcase-of-case',
-# '-fdo-case-elim',
-# '-fcase-merge',
-# '-fdo-eta-reduction',
-# '-fdo-lambda-eta-expansion',
-# '-freuse-con',
-# $Oopt_PedanticBottoms,
-# $Oopt_MonadEtaExpansion,
-# $Oopt_MaxSimplifierIterations,
-# $Oopt_ShowSimplifierProgress,
-# ']',
-# ) : (),
-
- # this pass-ordering sequence was agreed by Simon and Andr\'e
- # (WDP 94/07, 94/11).
- '-ffull-laziness',
-
- ($Oopt_FoldrBuild) ? (
- '-ffoldr-build-on', # desugar list comprehensions for foldr/build
-
- '-fsimplify',
- '[',
- '-fignore-inline-pragma', # **** NB!
- '-fdo-foldr-build', # NB
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
- '-fcase-merge',
-# '-fdo-eta-reduction',
- '-fdo-lambda-eta-expansion', # After full laziness
- '-freuse-con',
- $Oopt_PedanticBottoms,
- $Oopt_MonadEtaExpansion,
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
- ']',
- ) : (),
-
- '-ffloat-inwards',
-
'-fsimplify',
'[',
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
- '-fcase-merge',
- '-fdo-eta-reduction',
- '-fdo-lambda-eta-expansion',
- '-freuse-con',
- ($Oopt_FoldrBuildInline),
- # you need to inline foldr and build
- ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
- # but do reductions if you see them!
- $Oopt_PedanticBottoms,
- $Oopt_MonadEtaExpansion,
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
+ # 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
+
+ '-finline-phase2',
+ $Oopt_MaxSimplifierIterations,
']',
+
'-fstrictness',
+ '-fcpr-analyse',
'-fworker-wrapper',
'-fsimplify',
'[',
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
- '-fcase-merge',
-# '-fdo-eta-reduction',
- '-fdo-lambda-eta-expansion',
- '-freuse-con',
- '-flet-to-case', # Aha! Only done after strictness analysis
- $Oopt_PedanticBottoms,
- $Oopt_MonadEtaExpansion,
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
+ $Oopt_MaxSimplifierIterations,
+ # No -finline-phase: allow all Ids to be inlined now
']',
+ '-fcse', # CSE must immediately follow a simplification pass, because it relies
+ # on the no-shadowing invariant. See comments at the top of CSE.lhs
+
+ '-ffull-laziness', # nofib/spectral/hartel/wang doubles in speed if you
+ # do full laziness late in the day. It only happens
+ # after fusion and other stuff, so the early pass doesn't
+ # catch it. For the record, the redex is
+ # f_el22 (f_el21 r_midblock)
'-ffloat-inwards',
# Case-liberation for -O2. This should be after
# ( ($OptLevel != 2)
# ? ''
-# : "-fliberate-case -fsimplify [ $Oopt_FB_Support -ffloat-lets-exposing-whnf -ffloat-primops-ok -fcase-of-case -fdo-case-elim -fcase-merge -fdo-eta-reduction -fdo-lambda-eta-expansion -freuse-con -flet-to-case $Oopt_PedanticBottoms $Oopt_MonadEtaExpansion $Oopt_MaxSimplifierIterations $Oopt_ShowSimplifierProgress ]" ),
+# : "-fliberate-case -fsimplify [ $Oopt_FB_Support -ffloat-lets-exposing-whnf -ffloat-primops-ok -fcase-of-case -fdo-case-elim -fcase-merge -fdo-lambda-eta-expansion -freuse-con -flet-to-case $Oopt_PedanticBottoms $Oopt_MaxSimplifierIterations $Oopt_ShowSimplifierProgress ]" ),
# Final clean-up simplification:
'-fsimplify',
'[',
- $Oopt_FB_Support,
- '-ffloat-lets-exposing-whnf',
- '-ffloat-primops-ok',
- '-fcase-of-case',
- '-fdo-case-elim',
- '-fcase-merge',
-# '-fdo-eta-reduction',
- '-fdo-lambda-eta-expansion',
- '-freuse-con',
- '-flet-to-case',
- '-fignore-inline-pragma', # **** NB!
- $Oopt_FoldrBuildInline,
- ($Oopt_FoldrBuild) ? ('-fdo-foldr-build') : (),
- # but still do reductions if you see them!
- $Oopt_PedanticBottoms,
- $Oopt_MonadEtaExpansion,
- $Oopt_MaxSimplifierIterations,
- $Oopt_ShowSimplifierProgress,
+ $Oopt_MaxSimplifierIterations,
+ # No -finline-phase: allow all Ids to be inlined now
']',
# '-fstatic-args',
-#LATER: '-fcalc-inlinings2', -- pointless for 2.01
-
# stg2stg passes
- '-flambda-lift',
+# '-flambda-lift',
$Oopt_FinalStgProfilingMassage,
$Oopt_StgStats,
%************************************************************************
Sort out @$BuildTag@, @$PROFing@, @$PARing@,
-@$GRANing@, @$TICKYing@:
+@$GRANing@, @$TICKYing@, @UNREGing@:
\begin{code}
sub setupBuildFlags {
# PROFILING stuff after argv mangling:
if ( ! $PROFing ) {
- # warn about any scc exprs found (in case scc used as identifier)
- push(@HsP_flags, '-W');
-
# add -auto sccs even if not profiling !
push(@HsC_flags, $UNPROFscc_auto) if $UNPROFscc_auto;
# Ignore user sccs when auto annotating, but warn when doing so.
$PROFignore_scc = '-W' if $PROFauto;
-
- push(@HsP_flags, (($PROFignore_scc) ? $PROFignore_scc : '-S'));
}
#if ( $BuildTag ne '' ) {
# local($b) = $BuildDescr{$BuildTag};
} elsif ( $TICKYing eq 't' ) {
$BuildTag = '_t';
- }
+ } elsif ( $UNREGing eq 'u' ) {
+ if ($GhcWithRegisterised eq 'YES') {
+ $BuildTag = '_u';
+ }
+ }
\end{code}
After the sanity checks, add flags to the necessary parts of the driver pipeline:
,'-u', "${uscore}PrelPack_unpackCString_closure"
,'-u', "${uscore}PrelException_stackOverflow_closure"
,'-u', "${uscore}PrelException_heapOverflow_closure"
+ ,'-u', "${uscore}PrelException_NonTermination_static_closure"
));
if (!$NoHaskellMain) {
unshift (@Ld_flags,'-u', "${uscore}PrelMain_mainIO_closure");
sub runHsc {
local($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive) = @_;
- # prepend comma to HsP flags (so hsc can tell them apart...)
- foreach $a ( @HsP_flags ) { $a = ",$a" unless $a =~ /^,/; }
-
&makeHiMap() unless $HiMapDone;
push(@HsC_flags, "-himap=$HiIncludeString");
open(OPTS, "> $Tmp_prefix.opts") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.opts\n");
print OPTS "$dump @HsC_flags $CoreLint $USPLint $StgLint $Verbose";
close(OPTS);
- $to_do = "$HsC @HsP_flags ,$hscpp_hsc \@$Tmp_prefix.opts $output +RTS @HsC_rts_flags";
+ $to_do = "$HsC $hscpp_hsc \@$Tmp_prefix.opts $output +RTS @HsC_rts_flags";
} else {
- $to_do = "$HsC @HsP_flags ,$hscpp_hsc $dump @HsC_flags $CoreLint $USPLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
+ $to_do = "$HsC $hscpp_hsc $dump @HsC_flags $CoreLint $USPLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
}
&run_something($to_do, 'Haskell compiler');
/^-optP(.*)$/ && do { push(@HsCpp_flags, $1); next arg; };
/^-optCrts(.*)$/&& do { push(@HsC_rts_flags, $1); next arg; };
/^-optC(.*)$/ && do { push(@HsC_flags, $1); next arg; };
- /^-optp(.*)$/ && do { push(@HsP_flags, $1); next arg; };
/^-optcpp(.*)$/ && do { push(@Cpp_define, $1); $Only_preprocess_hc = ($1 eq "-E"); next arg; };
/^-optc(.*)$/ && do { push(@CcBoth_flags, $1); next arg; };
/^-opta(.*)$/ && do { push(@As_flags, $1); next arg; };
}
next arg; };
+ /^-unreg$/ && do { $UNREGing = 'u'; next arg; };
+ /^-funregisterised$/ && do { push(@HsC_flags, $_); next arg; };
/^-fno-asm-mangling$/ && do { $DoAsmMangling = 0; next arg; };
/^-fallow-overlapping-instances$/ && do { push(@HsC_flags, $_); next arg; };
/^-fallow-undecidable-instances$/ && do { push(@HsC_flags, $_); next arg; };
+ /^-fhistory-size.*$/ && do { push(@HsC_flags, $_); next arg; };
+ /^-fdicts-strict$/ && do { push(@HsC_flags, $_); next arg; };
/^-fglasgow-exts$/
&& do { push(@HsC_flags, $_);
- push(@HsP_flags, '-N');
# -fglasgow-exts implies -syslib exts
&add_syslib('exts');
/^-ffoldr-build$/
&& do { $Oopt_FoldrBuild = 1;
- $Oopt_FB_Support = '-fdo-arity-expand';
#print "Yes F/B\n";
next arg; };
/^-fno-foldr-build$/
&& do { $Oopt_FoldrBuild = 0;
- $Oopt_FB_Support = '';
- next arg; };
-
- /^-fno-foldr-build-rule$/
- && do { $Oopt_FoldrBuild = 0;
- next arg; };
-
- /^-fno-enable-tech$/
- && do { $Oopt_FB_Support = '';
- next arg; };
-
- /^-fno-snapback-to-append$/
- && do { $Oopt_FoldrBuildInline .= ' -fdo-not-fold-back-append ';
next arg; };
# --------------- Renamer -------------
/^-fno-pre-inlining$/
&& do { push(@HsC_flags, $_); next arg };
- /^-fdo-monad-eta-expansion$/
- && do { $Oopt_MonadEtaExpansion = $_; next arg; };
-
/^-fno-let-from-(case|app|strict-let)$/ # experimental, really (WDP 95/10)
&& do { push(@HsC_flags, $_); next arg; };
projects / ghc-hetmet.git / blobdiff