etc/bench.pl.in

   1 #! /usr/bin/perl -w
   2
   3 # Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.
   4 #
   5 # This file is part of Bison, the GNU Compiler Compiler.
   6 #
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 use IO::File;
  21 use Benchmark qw (:all);
  22
  23 my $bison = $ENV{'BISON'} || '@abs_top_builddir@/tests/bison';
  24 my $cc = $ENV{'CC'} || 'gcc';
  25
  26 ##################################################################
  27
  28 sub triangular_grammar ($$$)
  29 {
  30   my ($base, $max, $directives) = @_;
  31
  32   my $out = new IO::File ">$base.y"
  33     or die;
  34   print $out <<EOF;
  35 %error-verbose
  36 %debug
  37 %{
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40
  41 static int yylex (void);
  42 static void yyerror (const char *msg);
  43 %}
  44 %union
  45 {
  46   int val;
  47 };
  48
  49 %token END "end"
  50 %type <val> exp input
  51 EOF
  52
  53   for my $size (1 .. $max)
  54     {
  55       print $out "%token t$size $size \"$size\"\n";
  56     };
  57
  58 print $out <<EOF;
  59 %%
  60 input:
  61   exp        { if (\$1 != 0) abort (); \$\$ = \$1; }
  62 | input exp  { if (\$2 != \$1 + 1) abort (); \$\$ = \$2; }
  63 ;
  64
  65 exp:
  66   END
  67     { \$\$ = 0; }
  68 EOF
  69
  70 for my $size (1 .. $max)
  71   {
  72     use Text::Wrap;
  73     print $out wrap ("| ", "   ",
  74                      (map { "\"$_\"" } (1 .. $size)),
  75                      " END \n"),
  76                "    { \$\$ = $size; }\n";
  77   };
  78 print $out ";\n";
  79
  80 print $out <<EOF;
  81 %%
  82 static int
  83 yylex (void)
  84 {
  85   static int inner = 1;
  86   static int outer = 0;
  87   if (outer > $max)
  88     return 0;
  89   else if (inner > outer)
  90     {
  91       inner = 1;
  92       ++outer;
  93       return END;
  94     }
  95   return inner++;
  96 }
  97
  98 static void
  99 yyerror (const char *msg)
 100 {
 101   fprintf (stderr, "%s\\n", msg);
 102 }
 103
 104 int
 105 main (void)
 106 {
 107   yydebug = !!getenv ("YYDEBUG");
 108   return yyparse ();
 109 }
 110 EOF
 111 }
 112
 113 ##################################################################
 114
 115 sub calc_input ($$)
 116 {
 117   my ($base, $max) = @_;
 118   my $out = new IO::File ">$base.input"
 119     or die;
 120   foreach (1 .. $max)
 121     {
 122       print $out "0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+55+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70+71+72+73+74+75+76+77+78+79+80+81+82+83+84+85+86+87+88+89+90+91+92+93+94+95+96+97+98+99\n";
 123       print $out "1+1*(2+2*(3+3*(4+4*(5+5*(6+6*(7+7*(8+8*(9+9*(10+10*(11+11*(12+12*(13+13*(14+14*(15+15*(16+16*(17+17*(18+18*(19+19*(20+20*(21+21*(22+22*(23+23*(24+24*(25+25*(26+26*(27+27*(28+28*(29+29*(30+30*(31+31*(32+32*(33+33*(34+34*(35+35*(36+36*(37+37*(38+38*(39+39*(40+40*(41+41*(42+42*(43+43*(44+44*(45+45*(46+46*(47+47*(48+48*(49+49*(50+50*(51+51*(52+52*(53+53*(54+54*(55+55*(56+56*(57+57*(58+58*(59+59*(60+60*(61+61*(62+62*(63+63*(64+64*(65+65*(66+66*(67+67*(68+68*(69+69*(70+70*(71+71*(72+72*(73+73*(74+74*(75+75*(76+76*(77+77*(78+78*(79+79*(80+80*(81+81*(82+82*(83+83*(84+84*(85+85*(86+86*(87+87*(88+88*(89+89*(90+90*(91+91*(92+92*(93+93*(94+94*(95+95*(96+96*(97+97*(98+98*(99+99*(100+100*(101+101*(102+102*(103+103*(104+104*(105+105*(106+106*(107+107*(108+108*(109+109*(110+110*(111+111*(112+112*(113+113*(114+114*(115+115*(116+116*(117+117*(118+118*(119+119*(120+120*(121+121*(122+122*(123+123*(124+124*(125+125*(126+126*(127+127*(128+128*(129+129*(130+130*(131+131*(132+132*(133+133*(134+134*(135+135*(136+136*(137+137*(138+138*(139+139*(140+140*(141+141*(142+142*(143+143*(144+144*(145+145*(146+146*(147+147*(148+148*(149+149*(150+150*(151+151*(152+152*(153+153*(154+154*(155+155*(156+156*(157+157*(158+158*(159+159*(160+160*(161+161*(162+162*(163+163*(164+164*(165+165*(166+166*(167+167*(168+168*(169+169*(170+170*(171+171*(172+172*(173+173*(174+174*(175+175*(176+176*(177+177*(178+178*(179+179*(180+180*(181+181*(182+182*(183+183*(184+184*(185+185*(186+186*(187+187*(188+188*(189+189*(190+190*(191+191*(192+192*(193+193*(194+194*(195+195*(196+196*(197+197*(198+198*(199+199*(200+200*(201+201*(202+202*(203+203*(204+204*(205+205*(206+206*(207+207*(208+208*(209+209*(210+210*(211+211*(212+212*(213+213*(214+214*(215+215*(216+216*(217+217*(218+218*(219+219*(220+220*(221+221*(222+222*(223+223*(224+224*(225+225*(226+226*(227+227*(228+228*(229+229*(230+230*(231+231*(232+232*(233+233*(234+234*(235+235*(236+236*(237+237*(238+238*(239+239*(240+240*(241+241*(242+242*(243+243*(244+244*(245+245*(246+246*(247+247*(248+248*(249+249*(250+250*(251+251*(252+252*(253+253*(254+254*(255+255*(256+256*(257+257*(258+258*(259+259*(260+260*(261+261*(262+262*(263+263*(264+264*(265+265*(266+266*(267+267*(268+268*(269+269*(270+270*(271+271*(272+272*(273+273*(274+274*(275+275*(276+276*(277+277*(278+278*(279+279*(280+280*(281+281*(282+282*(283+283*(284+284*(285+285*(286+286*(287+287*(288+288*(289+289*(290+290*(291+291*(292+292*(293+293*(294+294*(295+295*(296+296*(297+297*(298+298*(299+299*(300+300*(301+301*(302+302*(303+303*(304+304*(305+305*(306+306*(307+307*(308+308*(309+309*(310+310*(311+311*(312+312*(313+313*(314+314*(315+315*(316+316*(317+317*(318+318*(319+319*(320+320*(321+321*(322+322*(323+323*(324+324*(325+325*(326+326*(327+327*(328+328*(329+329*(330+330*(331+331*(332+332*(333+333*(334+334*(335+335*(336+336*(337+337*(338+338*(339+339*(340+340*(341+341*(342+342*(343+343*(344+344*(345+345*(346+346*(347+347*(348+348*(349+349*(350+350*(351+351*(352+352*(353+353*(354+354*(355+355*(356+356*(357+357*(358+358*(359+359*(360+360*(361+361*(362+362*(363+363*(364+364*(365+365*(366+366*(367+367*(368+368*(369+369*(370+370*(371+371*(372+372*(373+373*(374+374*(375+375*(376+376*(377+377*(378+378*(379+379*(380+380*(381+381*(382+382*(383+383*(384+384*(385+385*(386+386*(387+387*(388+388*(389+389*(390+390*(391+391*(392+392*(393+393*(394+394*(395+395*(396+396*(397+397*(398+398*(399+399*(400+400*(401+401*(402+402*(403+403*(404+404*(405+405*(406+406*(407+407*(408+408*(409+409*(410+410*(411+411*(412+412*(413+413*(414+414*(415+415*(416+416*(417+417*(418+418*(419+419*(420+420*(421+421*(422+422*(423+423*(424+424*(425+425*(426+426*(427+427*(428+428*(429+429*(430+430*(431+431*(432+432*(433+433*(434+434*(435+435*(436+436*(437+437*(438+438*(439+439*(440+440*(441+441*(442+442*(443+443*(444+444*(445+445*(446+446*(447+447*(448+448*(449+449*(450+450*(451+451*(452+452*(453+453*(454+454*(455+455*(456+456*(457+457*(458+458*(459+459*(460+460*(461+461*(462+462*(463+463*(464+464*(465+465*(466+466*(467+467*(468+468*(469+469*(470+470*(471+471*(472+472*(473+473*(474+474*(475+475*(476+476*(477+477*(478+478*(479+479*(480+480*(481+481*(482+482*(483+483*(484+484*(485+485*(486+486*(487+487*(488+488*(489+489*(490+490*(491+491*(492+492*(493+493*(494+494*(495+495*(496+496*(497+497*(498+498*(499+499*(500+500*(501+501*(502+502*(503+503*(504+504*(505+505*(506+506*(507+507*(508+508*(509+509*(510+510*(511+511*(512+512*(513+513*(514+514*(515+515*(516+516*(517+517*(518+518*(519+519*(520+520*(521+521*(522+522*(523+523*(524+524*(525+525*(526+526*(527+527*(528+528*(529+529*(530+530*(531+531*(532+532*(533+533*(534+534*(535+535*(536+536*(537+537*(538+538*(539+539*(540+540*(541+541*(542+542*(543+543*(544+544*(545+545*(546+546*(547+547*(548+548*(549+549*(550+550*(551+551*(552+552*(553+553*(554+554*(555+555*(556+556*(557+557*(558+558*(559+559*(560+560*(561+561*(562+562*(563+563*(564+564*(565+565*(566+566*(567+567*(568+568*(569+569*(570+570*(571+571*(572+572*(573+573*(574+574*(575+575*(576+576*(577+577*(578+578*(579+579*(580+580*(581+581*(582+582*(583+583*(584+584*(585+585*(586+586*(587+587*(588+588*(589+589*(590+590*(591+591*(592+592*(593+593*(594+594*(595+595*(596+596*(597+597*(598+598*(599+599*(600+600*(601+601*(602+602*(603+603*(604+604*(605+605*(606+606*(607+607*(608+608*(609+609*(610+610*(611+611*(612+612*(613+613*(614+614*(615+615*(616+616*(617+617*(618+618*(619+619*(620+620*(621+621*(622+622*(623+623*(624+624*(625+625*(626+626*(627+627*(628+628*(629+629*(630+630*(631+631*(632+632*(633+633*(634+634*(635+635*(636+636*(637+637*(638+638*(639+639*(640+640*(641+641*(642+642*(643+643*(644+644*(645+645*(646+646*(647+647*(648+648*(649+649*(650+650*(651+651*(652+652*(653+653*(654+654*(655+655*(656+656*(657+657*(658+658*(659+659*(660+660*(661+661*(662+662*(663+663*(664+664*(665+665*(666+666*(667+667*(668+668*(669+669*(670+670*(671+671*(672+672*(673+673*(674+674*(675+675*(676+676*(677+677*(678+678*(679+679*(680+680*(681+681*(682+682*(683+683*(684+684*(685+685*(686+686*(687+687*(688+688*(689+689*(690+690*(691+691*(692+692*(693+693*(694+694*(695+695*(696+696*(697+697*(698+698*(699+699*(700+700*(701+701*(702+702*(703+703*(704+704*(705+705*(706+706*(707+707*(708+708*(709+709*(710+710*(711+711*(712+712*(713+713*(714+714*(715+715*(716+716*(717+717*(718+718*(719+719*(720+720*(721+721*(722+722*(723+723*(724+724*(725+725*(726+726*(727+727*(728+728*(729+729*(730+730*(731+731*(732+732*(733+733*(734+734*(735+735*(736+736*(737+737*(738+738*(739+739*(740+740*(741+741*(742+742*(743+743*(744+744*(745+745*(746+746*(747+747*(748+748*(749+749*(750+750*(751+751*(752+752*(753+753*(754+754*(755+755*(756+756*(757+757*(758+758*(759+759*(760+760*(761+761*(762+762*(763+763*(764+764*(765+765*(766+766*(767+767*(768+768*(769+769*(770+770*(771+771*(772+772*(773+773*(774+774*(775+775*(776+776*(777+777*(778+778*(779+779*(780+780*(781+781*(782+782*(783+783*(784+784*(785+785*(786+786*(787+787*(788+788*(789+789*(790+790*(791+791*(792+792*(793+793*(794+794*(795+795*(796+796*(797+797*(798+798*(799+799*(800+800*(801+801*(802+802*(803+803*(804+804*(805+805*(806+806*(807+807*(808+808*(809+809*(810+810*(811+811*(812+812*(813+813*(814+814*(815+815*(816+816*(817+817*(818+818*(819+819*(820+820*(821+821*(822+822*(823+823*(824+824*(825+825*(826+826*(827+827*(828+828*(829+829*(830+830*(831+831*(832+832*(833+833*(834+834*(835+835*(836+836*(837+837*(838+838*(839+839*(840+840*(841+841*(842+842*(843+843*(844+844*(845+845*(846+846*(847+847*(848+848*(849+849*(850+850*(851+851*(852+852*(853+853*(854+854*(855+855*(856+856*(857+857*(858+858*(859+859*(860+860*(861+861*(862+862*(863+863*(864+864*(865+865*(866+866*(867+867*(868+868*(869+869*(870+870*(871+871*(872+872*(873+873*(874+874*(875+875*(876+876*(877+877*(878+878*(879+879*(880+880*(881+881*(882+882*(883+883*(884+884*(885+885*(886+886*(887+887*(888+888*(889+889*(890+890*(891+891*(892+892*(893+893*(894+894*(895+895*(896+896*(897+897*(898+898*(899+899*(900+900*(901+901*(902+902*(903+903*(904+904*(905+905*(906+906*(907+907*(908+908*(909+909*(910+910*(911+911*(912+912*(913+913*(914+914*(915+915*(916+916*(917+917*(918+918*(919+919*(920+920*(921+921*(922+922*(923+923*(924+924*(925+925*(926+926*(927+927*(928+928*(929+929*(930+930*(931+931*(932+932*(933+933*(934+934*(935+935*(936+936*(937+937*(938+938*(939+939*(940+940*(941+941*(942+942*(943+943*(944+944*(945+945*(946+946*(947+947*(948+948*(949+949*(950+950*(951+951*(952+952*(953+953*(954+954*(955+955*(956+956*(957+957*(958+958*(959+959*(960+960*(961+961*(962+962*(963+963*(964+964*(965+965*(966+966*(967+967*(968+968*(969+969*(970+970*(971+971*(972+972*(973+973*(974+974*(975+975*(976+976*(977+977*(978+978*(979+979*(980+980*(981+981*(982+982*(983+983*(984+984*(985+985*(986+986*(987+987*(988+988*(989+989*(990+990*(991+991*(992+992*(993+993*(994+994*(995+995*(996+996*(997+997*(998+998*(999+999*(1000+1000*(1001))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))\n";
 124     }
 125 }
 126
 127 ##################################################################
 128
 129 sub calc_grammar ($$$)
 130 {
 131   my ($base, $max, $directives) = @_;
 132
 133   my $out = new IO::File ">$base.y"
 134     or die;
 135   print $out <<EOF;
 136 %{
 137 #include <stdio.h>
 138
 139 #include <stdlib.h>
 140 #include <string.h>
 141 #include <ctype.h>
 142 #define USE(Var)
 143
 144 /* Exercise pre-prologue dependency to %union.  */
 145 typedef int semantic_value;
 146
 147 static semantic_value global_result = 0;
 148 static int global_count = 0;
 149 %}
 150
 151 /* Exercise %union. */
 152 $directives
 153 %error-verbose
 154 %union
 155 {
 156   semantic_value ival;
 157 };
 158
 159 %{
 160 static int power (int base, int exponent);
 161 /* yyerror receives the location if:
 162    - %location & %pure & %glr
 163    - %location & %pure & %yacc & %parse-param. */
 164 static void yyerror (const char *s);
 165 #if YYPURE
 166 static int yylex (YYSTYPE* yylvalp);
 167 #else
 168 static int yylex (void);
 169 #endif
 170 %}
 171
 172 /* Bison Declarations */
 173 %token CALC_EOF 0 "end of input"
 174 %token <ival> NUM "number"
 175 %type  <ival> exp
 176
 177 %nonassoc '=' /* comparison            */
 178 %left '-' '+'
 179 %left '*' '/'
 180 %left NEG     /* negation--unary minus */
 181 %right '^'    /* exponentiation        */
 182
 183 /* Grammar follows */
 184 %%
 185 input:
 186   line
 187 | input line
 188 ;
 189
 190 line:
 191   '\\n'
 192 | exp '\\n'           { USE (\$1); }
 193 ;
 194
 195 exp:
 196   NUM                { \$\$ = \$1;             }
 197 | exp '=' exp
 198   {
 199     if (\$1 != \$3)
 200       fprintf (stderr, "calc: error: %d != %d\\n", \$1, \$3);
 201     \$\$ = \$1;
 202   }
 203 | exp '+' exp        { \$\$ = \$1 + \$3;        }
 204 | exp '-' exp        { \$\$ = \$1 - \$3;        }
 205 | exp '*' exp        { \$\$ = \$1 * \$3;        }
 206 | exp '/' exp        { \$\$ = \$1 / \$3;        }
 207 | '-' exp  %prec NEG { \$\$ = -\$2;            }
 208 | exp '^' exp        { \$\$ = power (\$1, \$3); }
 209 | '(' exp ')'        { \$\$ = \$2;             }
 210 | '(' error ')'      { \$\$ = 1111;           }
 211 | '!'                { \$\$ = 0; YYERROR;     }
 212 | '-' error          { \$\$ = 0; YYERROR;     }
 213 ;
 214 %%
 215 /* The input.  */
 216 static FILE *input;
 217
 218 static void
 219 yyerror (const char *s)
 220 {
 221   fprintf (stderr, "%s\\n", s);
 222 }
 223
 224 static int
 225 get_char (void)
 226 {
 227   return getc (input);
 228 }
 229
 230
 231 static void
 232 unget_char ( int c)
 233 {
 234   ungetc (c, input);
 235 }
 236
 237 static int
 238 read_signed_integer (void)
 239 {
 240   int c = get_char ();
 241   int sign = 1;
 242   int n = 0;
 243
 244   if (c == '-')
 245     {
 246       c = get_char ();
 247       sign = -1;
 248     }
 249
 250   while (isdigit (c))
 251     {
 252       n = 10 * n + (c - '0');
 253       c = get_char ();
 254     }
 255
 256   unget_char (c);
 257
 258   return sign * n;
 259 }
 260
 261 static int
 262 #if YYPURE
 263 # define yylval (*yylvalp)
 264 yylex (YYSTYPE* yylvalp)
 265 #else
 266 yylex (void)
 267 #endif
 268 {
 269   int c;
 270
 271   /* Skip white space.  */
 272   while ((c = get_char ()) == ' ' || c == '\t')
 273     continue;
 274
 275   /* process numbers   */
 276   if (c == '.' || isdigit (c))
 277     {
 278       unget_char ( c);
 279       yylval.ival = read_signed_integer ();
 280       return NUM;
 281     }
 282
 283   /* Return end-of-file.  */
 284   if (c == EOF)
 285     return CALC_EOF;
 286
 287   /* Return single chars. */
 288   return c;
 289 }
 290
 291 static int
 292 power (int base, int exponent)
 293 {
 294   int res = 1;
 295   if (exponent < 0)
 296     exit (3);
 297   for (/* Niente */; exponent; --exponent)
 298     res *= base;
 299   return res;
 300 }
 301
 302
 303 int
 304 main (int argc, const char **argv)
 305 {
 306   semantic_value result = 0;
 307   int count = 0;
 308   int status;
 309
 310   input = fopen ("calc.input", "r");
 311   if (!input)
 312     {
 313       perror ("calc.input");
 314       return 3;
 315     }
 316
 317   status = yyparse ();
 318   if (global_result != result)
 319     abort ();
 320   if (global_count != count)
 321     abort ();
 322
 323   return status;
 324 }
 325 EOF
 326 }
 327
 328 ##################################################################
 329
 330 sub compile ($)
 331 {
 332   my ($base) = @_;
 333   system ("$bison $base.y -o $base.c") == 0
 334     or die;
 335   system ("$cc -o $base $base.c") == 0
 336     or die;
 337 }
 338
 339 sub bench_grammar ($)
 340 {
 341   my ($gram) = @_;
 342   my %test =
 343     (
 344      "pull-impure" => '',
 345      "pull-pure" => '%define api.pure',
 346      "push-impure" => '%define api.push-pull "both"',
 347      "push-pure" => '%define api.push-pull "both" %define api.pure',
 348     );
 349
 350   my %bench;
 351   while (my ($name, $directives) = each %test)
 352     {
 353       print STDERR "$name\n";
 354       my $generator = "$gram" . "_grammar";
 355       &$generator ($name, 200, $directives);
 356       compile ($name);
 357       $bench{$name} = "system ('./$name');";
 358     }
 359
 360   print "$gram:\n";
 361   my $res = timethese (50, \%bench, 'nop');
 362   cmpthese ($res, 'nop');
 363 }
 364
 365 print STDERR "Using $bison, $cc.\n";
 366 calc_input ('calc', 200);
 367 bench_grammar ('calc');
 368
 369 ### Setup "GNU" style for perl-mode and cperl-mode.
 370 ## Local Variables:
 371 ## perl-indent-level: 2
 372 ## perl-continued-statement-offset: 2
 373 ## perl-continued-brace-offset: 0
 374 ## perl-brace-offset: 0
 375 ## perl-brace-imaginary-offset: 0
 376 ## perl-label-offset: -2
 377 ## cperl-indent-level: 2
 378 ## cperl-brace-offset: 0
 379 ## cperl-continued-brace-offset: 0
 380 ## cperl-label-offset: -2
 381 ## cperl-extra-newline-before-brace: t
 382 ## cperl-merge-trailing-else: nil
 383 ## cperl-continued-statement-offset: 2
 384 ## End: