[project @ 1999-08-24 15:33:09 by simonmar]
[ghc-hetmet.git] / ghc / driver / ghc.lprl
index fedb756..d09be78 100644 (file)
@@ -281,11 +281,11 @@ these are turned off by -Wnot.
                     '-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');
@@ -367,7 +367,8 @@ $Haskell1Version = 5; # i.e., Haskell 1.4
 # Cpp symbols defined when we're processing Haskell source.
 
 @HsSourceCppOpts = 
-       ( "-D__HASKELL1__=$Haskell1Version"
+       ( "-D__HASKELL__=98"
+       , "-D__HASKELL1__=$Haskell1Version"
        , "-D__GLASGOW_HASKELL__=$ProjectVersionInt"
        , "-D__HASKELL98__"
        , "-D__CONCURRENT_HASKELL__"
@@ -425,6 +426,9 @@ $CoreLint      = '';
 $USPLint       = '';
 $StgLint       = '';
 
+# The SplitMarker is the string/character used to mark end of element
+# in import lists.
+$SplitMarker    = ':';
 @Import_dir    = ('.'); #-i things
 @Include_dir   = ('.'); #-I things; other default(s) stuck on AFTER option processing
 
@@ -702,7 +706,6 @@ sub setupOptimiseFlags {
        '-ffoldr-build-on',
 
         '-fdo-eta-reduction',
-       '-fdo-case-elim',
        '-fdo-lambda-eta-expansion',
        '-fcase-of-case',
        '-fcase-merge',
@@ -713,65 +716,58 @@ sub setupOptimiseFlags {
 
        '-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',
@@ -780,6 +776,14 @@ sub setupOptimiseFlags {
                # 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
@@ -794,6 +798,7 @@ sub setupOptimiseFlags {
        '-fsimplify',
          '[', 
                $Oopt_MaxSimplifierIterations,  
+               # No -finline-phase: allow all Ids to be inlined now
          ']',
 
       #        '-fstatic-args',
@@ -1079,6 +1084,7 @@ sub setupLinkOpts {
           ,'-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");
@@ -1460,7 +1466,7 @@ Now the Haskell compiler, C compiler, and assembler
     }
 
     if (-f $hsc_out_c_stub) {
-       &run_something("cp $hsc_out_c_stub $ofile_c_stub_target", 'Copy foreign export C stubs');
+       &run_something("rm -f $ofile_c_stub_target && echo '#include \"${ofile_h_stub_target}\"' > $ofile_c_stub_target && cat $hsc_out_c_stub >> $ofile_c_stub_target", 'Copy foreign export C stubs');
        local ($hsc_out_s_stub);
        local ($hsc_out_o_stub);
        ($ofile_s_stub_target = $ofile_c_stub_target) =~ s/\.(.*)$/\.s/;
@@ -1702,7 +1708,8 @@ sub runHsc {
     local($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive) = @_;
 
     &makeHiMap() unless $HiMapDone;
-    push(@HsC_flags, "-himap=$HiIncludeString");
+    push(@HsC_flags, "\"-himap=$HiIncludeString\"");
+    push(@HsC_flags, "\"-himap-sep=${SplitMarker}\"");
 
     # here, we may produce .hc/.s and/or .hi files
     local($output) = '';
@@ -1729,7 +1736,7 @@ sub runHsc {
        # emit nofibbish time/bytes-alloc stats to stderr;
        # see later .stat file post-processing
        print STDERR "warning: both -Rgc-stats and -Rghc-timing used, -Rghc-timing wins." if $CollectingGCstats;
-       push(@HsC_rts_flags, "-s$Tmp_prefix.stat");
+       push(@HsC_rts_flags, "-S$Tmp_prefix.stat");
        push(@Files_to_tidy, "$Tmp_prefix.stat");
     }
 
@@ -1787,7 +1794,7 @@ sub makeHiMap {
     
     foreach $d ( @Import_dir ) {
        if ($HiIncludeString) { 
-          $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix}";
+          $HiIncludeString = "$HiIncludeString${SplitMarker}${d}%.${HiSuffix}";
        } else { 
           $HiIncludeString = "$d%.${HiSuffix}"; 
        }
@@ -1796,7 +1803,7 @@ sub makeHiMap {
 
     foreach $d ( @SysImport_dir ) {
        if ($HiIncludeString) { 
-           $HiIncludeString = "$HiIncludeString:${d}%.${HiSuffix_prelude}";
+           $HiIncludeString = "$HiIncludeString${SplitMarker}${d}%.${HiSuffix_prelude}";
        } else { 
            $HiIncludeString = "${d}%.${HiSuffix_prelude}";
         }
@@ -2964,8 +2971,16 @@ arg: while($_ = $Args[0]) {
                            print STDERR "WARNING: import paths cleared by `-i'\n";
                            next arg; };
 
-    /^-i(.*)/      && do { local(@new_items)
-                             = split( /:/, &grab_arg_arg(*Args,'-i', $1));
+    /^-i(.*)/      && do { local(@new_items);
+                           local($arg) = $1;
+    
+                           #
+                           if ( $arg =~ /;/ ) {
+                              $SplitMarker=";";
+                              @new_items = split( /;/, &grab_arg_arg(*Args,'-i', $arg));
+                           } else {
+                              @new_items = split( /:/, &grab_arg_arg(*Args,'-i', $arg));
+                           }
                            unshift(@Import_dir, @new_items);
                            next arg; };
 
@@ -3058,6 +3073,7 @@ arg: while($_ = $Args[0]) {
     /^-fallow-overlapping-instances$/ && 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, $_);