'-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');
'-ffoldr-build-on',
'-fdo-eta-reduction',
- '-fdo-case-elim',
'-fdo-lambda-eta-expansion',
'-fcase-of-case',
'-fcase-merge',
'-fsimplify',
'[',
- '-finline-phase1', # Don't inline rule Ids till specialisation has bitten
-
-# APR 99: the stuff in this comment is now
-# handled by -finline-phase1
-#
-# 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.
-# '-fessential-unfoldings-only',
-# '-fsimpl-uf-use-threshold0',
-
- '-fmax-simplifier-iterations2',
+ '-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',
']',
+ # 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',
+
+# '-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',
+# ']',
- $Oopt_UsageSPInf, # infer usage information here in case we need it later.
- # (add more of these where you need them --KSW 1999-04)
'-fsimplify',
'[',
- $Oopt_MaxSimplifierIterations,
-
- # Still don't inline transformation rule Ids, to give the
- # rules a good chance to fire
- '-finline-phase1',
+ '-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,
']',
- '-ffull-laziness',
-
- '-ffloat-inwards',
+ $Oopt_UsageSPInf, # infer usage information here in case we need it later.
+ # (add more of these where you need them --KSW 1999-04)
'-fsimplify',
'[',
- '-finline-phase2',
- $Oopt_MaxSimplifierIterations,
+ # 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',
+ '-fcpr-analyse',
'-fworker-wrapper',
'-fsimplify',
# 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
'-fsimplify',
'[',
$Oopt_MaxSimplifierIterations,
+ # No -finline-phase: allow all Ids to be inlined now
']',
# '-fstatic-args',
,'-u', "${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', "${uscore}PrelMain_mainIO_closure");
/^-fallow-overlapping-instances$/ && 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, $_);
projects / ghc-hetmet.git / blobdiff