my ($section, $fh, $format) = @_;
my $sym = $section->symtable || {};
my $default = $section->default;
+ my $i;
foreach (@{$section->[-1]{values}})
{
s{(s\\_[0-9a-f]+)}{ exists($sym->{$1}) ? $sym->{$1} : $default; }ge;
- printf $fh $format, $_;
+ printf $fh $format, $_, $i;
+ ++$i;
}
}
package B::C::InitSection;
-use vars qw(@ISA); @ISA = qw(B::C::Section);
+# avoid use vars
+@B::C::InitSection::ISA = qw(B::C::Section);
sub new {
my $class = shift;
+ my $max_lines = 10000; #pop;
my $section = $class->SUPER::new( @_ );
$section->[-1]{evals} = [];
+ $section->[-1]{chunks} = [];
+ $section->[-1]{nosplit} = 0;
+ $section->[-1]{current} = [];
+ $section->[-1]{count} = 0;
+ $section->[-1]{max_lines} = $max_lines;
return $section;
}
+sub split {
+ my $section = shift;
+ $section->[-1]{nosplit}--
+ if $section->[-1]{nosplit} > 0;
+}
+
+sub no_split {
+ shift->[-1]{nosplit}++;
+}
+
+sub inc_count {
+ my $section = shift;
+
+ $section->[-1]{count} += $_[0];
+ # this is cheating
+ $section->add();
+}
+
+sub add {
+ my $section = shift->[-1];
+ my $current = $section->{current};
+ my $nosplit = $section->{nosplit};
+
+ push @$current, @_;
+ $section->{count} += scalar(@_);
+ if( !$nosplit && $section->{count} >= $section->{max_lines} ) {
+ push @{$section->{chunks}}, $current;
+ $section->{current} = [];
+ $section->{count} = 0;
+ }
+}
+
sub add_eval {
my $section = shift;
my @strings = @_;
}
sub output {
- my $section = shift;
+ my( $section, $fh, $format, $init_name ) = @_;
+ my $sym = $section->symtable || {};
+ my $default = $section->default;
+ push @{$section->[-1]{chunks}}, $section->[-1]{current};
+
+ my $name = "aaaa";
+ foreach my $i ( @{$section->[-1]{chunks}} ) {
+ print $fh <<"EOT";
+static int perl_init_${name}()
+{
+ dTARG;
+ dSP;
+EOT
+ foreach my $j ( @$i ) {
+ $j =~ s{(s\\_[0-9a-f]+)}
+ { exists($sym->{$1}) ? $sym->{$1} : $default; }ge;
+ print $fh "\t$j\n";
+ }
+ print $fh "\treturn 0;\n}\n";
+ $section->SUPER::add( "perl_init_${name}();" );
+ ++$name;
+ }
foreach my $i ( @{$section->[-1]{evals}} ) {
- $section->add( sprintf q{eval_pv("%s",1);}, $i );
+ $section->SUPER::add( sprintf q{eval_pv("%s",1);}, $i );
}
- $section->SUPER::output( @_ );
+
+ print $fh <<"EOT";
+static int ${init_name}()
+{
+ dTARG;
+ dSP;
+EOT
+ $section->SUPER::output( $fh, $format );
+ print $fh "\treturn 0;\n}\n";
}
package B::C;
use Exporter ();
+our %REGEXP;
+
+{ # block necessary for caller to work
+ my $caller = caller;
+ if( $caller eq 'O' ) {
+ require XSLoader;
+ XSLoader::load( 'B::C' );
+ }
+}
+
@ISA = qw(Exporter);
@EXPORT_OK = qw(output_all output_boilerplate output_main mark_unused
init_sections set_callback save_unused_subs objsym save_context);
use B qw(minus_c sv_undef walkoptree walksymtable main_root main_start peekop
class cstring cchar svref_2object compile_stats comppadlist hash
- threadsv_names main_cv init_av end_av opnumber amagic_generation
+ threadsv_names main_cv init_av end_av regex_padav opnumber amagic_generation
AVf_REAL HEf_SVKEY SVf_POK SVf_ROK CVf_CONST);
use B::Asmdata qw(@specialsv_name);
my ($debug_cops, $debug_av, $debug_cv, $debug_mg);
my $max_string_len;
+my $ithreads = $Config{useithreads} eq 'define';
+
my @threadsv_names;
BEGIN {
@threadsv_names = threadsv_names();
}
sub savepv {
- my $pv = shift;
- $pv = '' unless defined $pv; # Is this sane ?
+ my $pv = pack "a*", shift;
my $pvsym = 0;
my $pvmax = 0;
- if ($pv_copy_on_grow) {
- my $cstring = cstring($pv);
- if ($cstring ne "0") { # sic
- $pvsym = sprintf("pv%d", $pv_index++);
- $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring));
- }
+ if ($pv_copy_on_grow) {
+ $pvsym = sprintf("pv%d", $pv_index++);
+
+ if( defined $max_string_len && length($pv) > $max_string_len ) {
+ my $chars = join ', ', map { cchar $_ } split //, $pv;
+ $decl->add(sprintf("static char %s[] = { %s };", $pvsym, $chars));
+ }
+ else {
+ my $cstring = cstring($pv);
+ if ($cstring ne "0") { # sic
+ $decl->add(sprintf("static char %s[] = %s;",
+ $pvsym, $cstring));
+ }
+ }
} else {
$pvmax = length(pack "a*",$pv) + 1;
}
my $rok = $sv->FLAGS & SVf_ROK;
my $pok = $sv->FLAGS & SVf_POK;
- my( $pv, $len, $savesym, $pvmax );
+ my( $len, $pvmax, $savesym, $pv ) = ( 0, 0 );
if( $rok ) {
$savesym = '(char*)' . save_rv( $sv );
}
my ($op, $level) = @_;
my $sym = objsym($op);
return $sym if defined $sym;
- my $svsym = $op->sv->save;
- $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, Nullsv",
+ my $sv = $op->sv;
+ my $svsym = '(SV*)' . $sv->save;
+ my $is_const_addr = $svsym =~ m/Null|\&/;
+ $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s",
${$op->next}, ${$op->sibling}, $op->fake_ppaddr,
$op->targ, $op->type, $op_seq, $op->flags,
- $op->private));
+ $op->private,
+ ( $is_const_addr ? $svsym : 'Nullsv' )));
my $ix = $svopsect->index;
$init->add(sprintf("svop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
unless $optimize_ppaddr;
- $init->add("svop_list[$ix].op_sv = (SV*)$svsym;");
+ $init->add("svop_list[$ix].op_sv = $svsym;")
+ unless $is_const_addr;
savesym($op, "(OP*)&svop_list[$ix]");
}
my ($op, $level) = @_;
my $sym = objsym($op);
return $sym if defined $sym;
- $padopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, 0",
+ $padopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %d",
${$op->next}, ${$op->sibling}, $op->fake_ppaddr,
$op->targ, $op->type, $op_seq, $op->flags,
- $op->private));
+ $op->private,$op->padix));
my $ix = $padopsect->index;
$init->add(sprintf("padop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
unless $optimize_ppaddr;
- $init->add(sprintf("padop_list[$ix].op_padix = %ld;", $op->padix));
+# $init->add(sprintf("padop_list[$ix].op_padix = %ld;", $op->padix));
savesym($op, "(OP*)&padop_list[$ix]");
}
elsif ($is_special && $$warnings == 5) {
# no warnings 'all';
$warn_sv = $optimize_warn_sv ?
- 'INT2PTR(SV*,1)' :
+ 'INT2PTR(SV*,2)' :
'pWARN_NONE';
}
elsif ($is_special) {
# use warnings;
$warn_sv = $optimize_warn_sv ?
- 'INT2PTR(SV*,1)' :
+ 'INT2PTR(SV*,3)' :
'pWARN_STD';
}
else {
return $sym if defined $sym;
my $replroot = $op->pmreplroot;
my $replstart = $op->pmreplstart;
- my $replrootfield = sprintf("s\\_%x", $$replroot);
+ my $replrootfield;
my $replstartfield = sprintf("s\\_%x", $$replstart);
my $gvsym;
my $ppaddr = $op->ppaddr;
- if ($$replroot) {
+ # under ithreads, OP_PUSHRE.op_replroot is an integer
+ $replrootfield = sprintf("s\\_%x", $$replroot) if ref $replroot;
+ if($ithreads && $op->name eq "pushre") {
+ $replrootfield = "INT2PTR(OP*,${replroot})";
+ } elsif ($$replroot) {
# OP_PUSHRE (a mutated version of OP_MATCH for the regexp
# argument to a split) stores a GV in op_pmreplroot instead
# of a substitution syntax tree. We don't want to walk that...
# pmnext handling is broken in perl itself, I think. Bad op_pmnext
# fields aren't noticed in perl's runtime (unless you try reset) but we
# segfault when trying to dereference it to find op->op_pmnext->op_type
- $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %s, %s, 0, 0, 0x%x, 0x%x",
+ $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %s, %s, 0, %u, 0x%x, 0x%x, 0x%x",
${$op->next}, ${$op->sibling}, $op->fake_ppaddr, $op->targ,
$op->type, $op_seq, $op->flags, $op->private,
${$op->first}, ${$op->last},
$replrootfield, $replstartfield,
- $op->pmflags, $op->pmpermflags,));
+ ( $ithreads ? $op->pmoffset : 0 ),
+ $op->pmflags, $op->pmpermflags, $op->pmdynflags ));
my $pm = sprintf("pmop_list[%d]", $pmopsect->index);
$init->add(sprintf("$pm.op_ppaddr = %s;", $ppaddr))
unless $optimize_ppaddr;
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s,(char *) %s, %d);",
$$sv, $$obj, cchar($type),$ptrsv,$len));
}elsif( $type eq 'r' ){
-# can't save r-MAGIC: we need a PMOP to recompile
-# the regexp, so die 'cleanly'
- confess "Can't save r-MAGICAL scalars (yet)"
-# my($resym,$relen) = savere( $sv->precomp );
-# $init->add(sprintf("sv_magic((SV*)s\\_%x, , %s, %s, %d);",
-# $$sv, $resym, cchar($type),cstring($ptr),$len));
+ my $rx = $mg->REGEX;
+ my $pmop = $REGEXP{$rx};
+
+ confess "PMOP not found for REGEXP $rx" unless $pmop;
+
+ my( $resym, $relen ) = savere( $mg->precomp );
+ my $pmsym = $pmop->save;
+ $init->add( split /\n/, sprintf <<CODE, $$sv, cchar($type), cstring($ptr) );
+{
+ REGEXP* rx = pregcomp($resym, $resym + $relen, (PMOP*)$pmsym);
+ sv_magic((SV*)s\\_%x, (SV*)rx, %s, %s, %d);
+}
+CODE
}else{
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);",
$$sv, $$obj, cchar($type),cstring($ptr),$len));
$cvstashname, $cvname); # debug
}
$pv = '' unless defined $pv; # Avoid use of undef warnings
- $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, \"\", %d, s\\_%x, (CV*)s\\_%x, 0x%x",
+ $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, \"\", %d, s\\_%x, (CV*)s\\_%x, 0x%x, 0x%x",
$xpvcv_ix, cstring($pv), length($pv), $cv->IVX,
$cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH,
- $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS));
+ $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS,
+ $cv->OUTSIDE_SEQ));
if (${$cv->OUTSIDE} == ${main_cv()}){
$init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$cv));
warn sprintf("done saving GV 0x%x for CV 0x%x\n",
$$gv, $$cv) if $debug_cv;
}
- $init->add(sprintf("CvFILE($sym) = %s;", cstring($cv->FILE)));
+ if( $ithreads ) {
+ $init->add( savepvn( "CvFILE($sym)", $cv->FILE) );
+ }
+ else {
+ $init->add(sprintf("CvFILE($sym) = %s;", cstring($cv->FILE)));
+ }
my $stash = $cv->STASH;
if ($$stash) {
$stash->save;
$$stash, $$cv) if $debug_cv;
}
$symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x",
- $sv_ix, $xpvcv_ix, $cv->REFCNT +1 , $cv->FLAGS));
+ $sv_ix, $xpvcv_ix, $cv->REFCNT +1*0 , $cv->FLAGS));
return $sym;
}
}
}
$init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);],
- sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS),
+ sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS ),
sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS));
$init->add(sprintf("GvLINE($sym) = %u;", $gv->LINE)) unless $is_empty;
-
+ # XXX hack for when Perl accesses PVX of GVs
+ $init->add("SvPVX($sym) = emptystring;\n");
# Shouldn't need to do save_magic since gv_fetchpv handles that
#$gv->save_magic;
+ # XXX will always be > 1!!!
my $refcnt = $gv->REFCNT + 1;
- $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1;
+ $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1 )) if $refcnt > 1;
return $sym if $is_empty;
+ # XXX B::walksymtable creates an extra reference to the GV
my $gvrefcnt = $gv->GvREFCNT;
if ($gvrefcnt > 1) {
$init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1));
$savefields&=~Save_CV if $fullname eq 'attributes::bootstrap';
# save it
- if (defined($egvsym)) {
+ # XXX is that correct?
+ if (defined($egvsym) && $egvsym !~ m/Null/ ) {
# Shared glob *foo = *bar
$init->add("gp_free($sym);",
"GvGP($sym) = GvGP($egvsym);");
}
return $sym;
}
+
sub B::AV::save {
my ($av) = @_;
my $sym = objsym($av);
$$av, $i++, class($el), $$el);
}
}
- my @names = map($_->save, @array);
+# my @names = map($_->save, @array);
# XXX Better ways to write loop?
# Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...;
# Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...;
+
+ # micro optimization: op/pat.t ( and other code probably )
+ # has very large pads ( 20k/30k elements ) passing them to
+ # ->add is a performance bottleneck: passing them as a
+ # single string cuts runtime from 6min20sec to 40sec
+
+ # you want to keep this out of the no_split/split
+ # map("\t*svp++ = (SV*)$_;", @names),
+ my $acc = '';
+ foreach my $i ( 0..$#array ) {
+ $acc .= "\t*svp++ = (SV*)" . $array[$i]->save . ";\n\t";
+ }
+ $acc .= "\n";
+
+ $init->no_split;
$init->add("{",
"\tSV **svp;",
"\tAV *av = (AV*)&sv_list[$sv_list_index];",
"\tav_extend(av, $fill);",
- "\tsvp = AvARRAY(av);",
- map("\t*svp++ = (SV*)$_;", @names),
- "\tAvFILLp(av) = $fill;",
+ "\tsvp = AvARRAY(av);" );
+ $init->add($acc);
+ $init->add("\tAvFILLp(av) = $fill;",
"}");
+ $init->split;
+ # we really added a lot of lines ( B::C::InitSection->add
+ # should really scan for \n, but that would slow
+ # it down
+ $init->inc_count( $#array );
} else {
my $max = $av->MAX;
$init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);")
for ($i = 1; $i < @contents; $i += 2) {
$contents[$i] = $contents[$i]->save;
}
+ $init->no_split;
$init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];");
while (@contents) {
my ($key, $value) = splice(@contents, 0, 2);
# cstring($key),length($key),$value, 0));
}
$init->add("}");
+ $init->split;
}
$hv->save_magic();
return savesym($hv, "(HV*)&sv_list[$sv_list_index]");
# XXX using $DATA might clobber it!
my $sym = svref_2object( \\$data )->save;
- foreach my $i ( split /\n/, <<CODE ) {
+ $init->add( split /\n/, <<CODE );
{
GV* gv = (GV*)gv_fetchpv( "$globname", TRUE, SVt_PV );
SV* sv = $sym;
GvSV( gv ) = sv;
}
CODE
- $init->add( $i );
- }
- # for PerlIO::Scalar
+ # for PerlIO::scalar
$use_xsloader = 1;
$init->add_eval( sprintf 'open(%s, "<", $%s)', $globname, $globname );
}
print "Static $typename ${name}_list[$lines];\n";
}
}
+ # XXX hack for when Perl accesses PVX of GVs
+ print 'Static char emptystring[] = "\0";';
+
$decl->output(\*STDOUT, "%s\n");
print "\n";
foreach $section (@sections) {
my $name = $section->name;
my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name);
printf "static %s %s_list[%u] = {\n", $typename, $name, $lines;
- $section->output(\*STDOUT, "\t{ %s },\n");
+ $section->output(\*STDOUT, "\t{ %s }, /* %d */\n");
print "};\n\n";
}
}
- print <<"EOT";
-static int $init_name()
-{
- dTARG;
- dSP;
-EOT
- $init->output(\*STDOUT, "\t%s\n");
- print "\treturn 0;\n}\n";
+ $init->output(\*STDOUT, "\t%s\n", $init_name );
if ($verbose) {
warn compile_stats();
warn "NULLOP count: $nullop_count\n";
long xcv_depth; /* >= 2 indicates recursive call */
AV * xcv_padlist;
CV * xcv_outside;
-#ifdef USE_5005THREADS
- perl_mutex *xcv_mutexp;
- struct perl_thread *xcv_owner; /* current owner thread */
-#endif /* USE_5005THREADS */
cv_flags_t xcv_flags;
+ U32 xcv_outside_seq; /* the COP sequence (at the point of our
+ * compilation) in the lexically enclosing
+ * sub */
} XPVCV_or_similar;
#define ANYINIT(i) i
#else
sub output_main {
print <<'EOT';
+/* if USE_IMPLICIT_SYS, we need a 'real' exit */
+#if defined(exit)
+#undef exit
+#endif
+
int
main(int argc, char **argv, char **env)
{
char **fakeargv;
GV* tmpgv;
SV* tmpsv;
+ int options_count;
PERL_SYS_INIT3(&argc,&argv,&env);
-
+
if (!PL_do_undump) {
my_perl = perl_alloc();
if (!my_perl)
perl_construct( my_perl );
PL_perl_destruct_level = 0;
}
+EOT
+ if( $ithreads ) {
+ # XXX init free elems!
+ my $pad_len = regex_padav->FILL + 1 - 1; # first is an avref
+
+ print <<EOT;
+#ifdef USE_ITHREADS
+ for( i = 0; i < $pad_len; ++i ) {
+ av_push( PL_regex_padav, newSViv(0) );
+ }
+ PL_regex_pad = AvARRAY( PL_regex_padav );
+#endif
+EOT
+ }
+ print <<'EOT';
#ifdef CSH
if (!PL_cshlen)
PL_cshlen = strlen(PL_cshname);
fakeargv[0] = argv[0];
fakeargv[1] = "-e";
fakeargv[2] = "";
+ options_count = 3;
EOT
# honour -T
- print sprintf ' fakeargv[3] = ( %s ) ? "-T" : "" ;'."\n", ${^TAINT};
+ print <<EOT;
+ if( ${^TAINT} ) {
+ fakeargv[options_count] = "-T";
+ ++options_count;
+ }
+EOT
print <<'EOT';
#ifndef ALLOW_PERL_OPTIONS
- fakeargv[4] = "--";
+ fakeargv[options_count] = "--";
+ ++options_count;
#endif /* ALLOW_PERL_OPTIONS */
for (i = 1; i < argc; i++)
- fakeargv[i + EXTRA_OPTIONS] = argv[i];
- fakeargv[argc + EXTRA_OPTIONS] = 0;
+ fakeargv[i + options_count - 1] = argv[i];
+ fakeargv[argc + options_count - 1] = 0;
- exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS,
+ exitstatus = perl_parse(my_perl, xs_init, argc + options_count - 1,
fakeargv, NULL);
if (exitstatus)
}
EOT
}
+ else {
+ print <<EOT;
+ if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {/* $0 */
+ tmpsv = GvSV(tmpgv);
+ sv_setpv(tmpsv, argv[0]);
+ SvSETMAGIC(tmpsv);
+ }
+EOT
+ }
print <<'EOT';
if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
else {
print qq/\tperl_call_pv("XSLoader::load",G_DISCARD);\n/;
}
- print "\n#else\n";
+ print "#else\n";
print "\tboot_$stashxsub(aTHX_ NULL);\n";
print "#endif\n";
print qq/\tSPAGAIN;\n/;
# save %SIG ( in case it was set in a BEGIN block )
if( $save_sig ) {
local $SIG{__WARN__} = $warner;
+ $init->no_split;
$init->add("{", "\tHV* hv = get_hv(\"main::SIG\",1);" );
foreach my $k ( keys %SIG ) {
- next unless $SIG{$k};
+ next unless ref $SIG{$k};
my $cv = svref_2object( \$SIG{$k} );
my $sv = $cv->save;
$init->add('{',sprintf 'SV* sv = (SV*)%s;', $sv );
$init->add('mg_set(sv);','}');
}
$init->add('}');
+ $init->split;
}
# honour -w
$init->add( sprintf " PL_dowarn = ( %s ) ? G_WARN_ON : G_WARN_OFF;", $^W );
'use-script-name' => \$use_perl_script_name,
'save-sig-hash' => \$save_sig,
);
+ my %optimization_map = ( 0 => [ qw() ], # special case
+ 1 => [ qw(-fcog) ],
+ 2 => [ qw(-fwarn-sv -fppaddr) ],
+ );
OPTION:
while ($option = shift @options) {
if ($option =~ /^-(.)(.*)/) {
}
} elsif ($opt eq "O") {
$arg = 1 if $arg eq "";
- $pv_copy_on_grow = 0;
- if ($arg >= 1) {
- # Optimisations for -O1
- $pv_copy_on_grow = 1;
- }
+ my @opt;
+ foreach my $i ( 1 .. $arg ) {
+ push @opt, @{$optimization_map{$i}}
+ if exists $optimization_map{$i};
+ }
+ unshift @options, @opt;
} elsif ($opt eq "e") {
push @eval_at_startup, $arg;
} elsif ($opt eq "l") {
=item B<-On>
-Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently,
-B<-O1> and higher set B<-fcog>.
+Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>.
+
+=over 4
+
+=item B<-O0>
+
+Disable all optimizations.
+
+=item B<-O1>
+
+Enable B<-fcog>.
+
+=item B<-O2>
+
+Enable B<-fppaddr>, B<-fwarn-sv>.
+
+=back
=item B<-llimit>
projects / p5sagit/p5-mst-13.2.git / blobdiff