# New Ticket Created by  Nicholas Clark 
# Please include the string:  [perl #36459]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=36459 >


This is a bug report for perl from [EMAIL PROTECTED],
generated with the help of perlbug 1.35 running under perl vv5.9.3.


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[Please enter your report here]

How expensive are 32 million function calls?

gcov says:

                void
                Perl_sv_setuv(pTHX_ register SV *sv, UV u)
    32637341    {
                    /* With these two if statements:
                       u=1.49  s=0.52  cu=72.49  cs=10.64  scripts=270  
tests=20865
                
                       without
                       u=1.35  s=0.47  cu=73.45  cs=11.43  scripts=270  
tests=20865
                
                       If you wish to remove them, please benchmark to see what 
the effect is
                    */
    32637341        if (u <= (UV)IV_MAX) {
    32546899           sv_setiv(sv, (IV)u);
    32546899           return;
                    }
       90442        sv_setiv(sv, 0);
       90442        SvIsUV_on(sv);
       90442        SvUV_set(sv, u);
                }

Might be worth investigating the true effect of that if statement,
and if moving it up into the macros that call sv_setuv helps.

Nicholas Clark


[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=wishlist
---
Site configuration information for perl vv5.9.3:

Configured by nick at Sat Jul  2 14:49:53 BST 2005.

Summary of my perl5 (revision 5 version 9 subversion 3 patch 24148) 
configuration:
  Platform:
    osname=freebsd, osvers=5.3-release-p2, archname=i386-freebsd-thread-multi
    uname='freebsd saigo.etla.org 5.3-release-p2 freebsd 5.3-release-p2 #1: wed 
dec 15 21:05:13 gmt 2004 [EMAIL PROTECTED]:usrobjusrsrcsyssaigo i386 '
    config_args='-Dusedevel=y -Dcc=ccache gcc -Dld=gcc -Ubincompat5005 
-Uinstallusrbinperl [EMAIL PROTECTED] [EMAIL PROTECTED] -Dinc_version_list=  
-Dinc_version_list_init=0 -Doptimize=-Os -Dusethreads -Uuse64bitint 
-Uusemymalloc -Duseperlio -Dprefix=~/Sandpit/snap5.9.x-25047 
-Dinstallman1dir=none -Dinstallman3dir=none -de'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define useithreads=define usemultiplicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='ccache gcc', ccflags ='-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H 
-fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/usr/local/include',
    optimize='-Os',
    cppflags='-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe 
-Wdeclaration-after-statement -I/usr/local/include'
    ccversion='', gccversion='3.4.2 [FreeBSD] 20040728', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', 
lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags ='-Wl,-E  -L/usr/local/lib'
    libpth=/usr/lib /usr/local/lib
    libs=-lm -lcrypt -lutil -lc_r
    perllibs=-lm -lcrypt -lutil -lc_r
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-DPIC -fPIC', lddlflags='-shared  -L/usr/local/lib'

Locally applied patches:
    

---
@INC for perl vv5.9.3:
    lib
    /home/nick/Sandpit/snap5.9.x-25047/lib/perl5/5.9.3/i386-freebsd-thread-multi
    /home/nick/Sandpit/snap5.9.x-25047/lib/perl5/5.9.3
    
/home/nick/Sandpit/snap5.9.x-25047/lib/perl5/site_perl/5.9.3/i386-freebsd-thread-multi
    /home/nick/Sandpit/snap5.9.x-25047/lib/perl5/site_perl/5.9.3
    /home/nick/Sandpit/snap5.9.x-25047/lib/perl5/site_perl
    .

---
Environment for perl vv5.9.3:
    HOME=/home/nick
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    
PATH=/home/nick/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/home/nick/bin:/usr/local/sbin:/sbin:/usr/sbin
    PERL_BADLANG (unset)
    SHELL=/usr/local/bin/bash

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