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deserves most of the credit). * Makefile.am (SUBDIRS): Add etc subdirectory. * configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile. * data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult, yytoken, yyval, and yyloc declarations to... (yyparse or yypush_parse): ... here to improve performance. For yypush_parse invocations after the first, be sure to assign yyn its old value again. (yypstate_new): Don't bother initializing the yyresult field since the initial value isn't used. (yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list, remove the #define that, in push mode, set it to yyps->NAME. * etc/Makefile.am: New. * etc/bench.pl: Remove and build it instead from... * etc/bench.pl.in: ... this new file. Use @abs_top_builddir@ to invoke "tests/bison" from the build directory by default rather than just invoking "bison" from $PATH. (calc_grammar): Update push parser code: don't declare yylval globally, don't define yyparse_wrapper, and don't #define yyparse. (bench_grammar): Update to check all working combinations of yacc.c, push.c, impure, pure, pull, and push.
A directory of tools provided to people using CVS Bison. None of
these is distributed.
* bench.pl
A primitive Perl script to run benches. Currently its only bench is
the usual calculator: it has a lightweight processing part (but not
null), so it is really emphasizing the cost of the whole parsing
(including scanning and I/O).
Set the envvars BISON and CC to the programs and flags you want to
use. They default to bison and gcc. To run a non-installed bison
from a tarball built in _build, I suggest the following.
BISON=_build/tests/bison CC='gcc -O2' ./bench.pl
(The _build/tests/bison wrapper makes sure that _build/src/bison will
use the tarballs' skeletons, not those already installed as a
straightforward use of _build/src/bison would.)
--
Copyright (C) 2006 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
Bison is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Bison is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with autoconf; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
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