head	1.2;
access;
symbols
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	PRE_SMPNG:1.1.1.1
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	RELENG_3_5_0_RELEASE:1.1.1.1
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	bsd_44_lite2:1.1.1.1
	RELENG_2_1_6_1_RELEASE:1.1.1.1
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	RELENG_2_2:1.1.1.1.0.8
	RELENG_2_2_BP:1.1.1.1
	RELENG_2_1_5_RELEASE:1.1.1.1
	RELENG_2_1_0_RELEASE:1.1.1.1
	RELENG_2_1_0:1.1.1.1.0.6
	RELENG_2_1_0_BP:1.1.1.1
	RELENG_2_0_5_RELEASE:1.1.1.1
	RELENG_2_0_5:1.1.1.1.0.4
	RELENG_2_0_5_BP:1.1.1.1
	RELENG_2_0_5_ALPHA:1.1.1.1
	RELEASE_2_0:1.1.1.1
	BETA_2_0:1.1.1.1
	ALPHA_2_0:1.1.1.1.0.2
	bsd_44_lite:1.1.1.1
	CSRG:1.1.1;
locks; strict;
comment	@# @;


1.2
date	2012.05.21.13.31.26;	author bapt;	state dead;
branches
	1.2.2.1;
next	1.1;

1.1
date	94.05.27.12.33.40;	author rgrimes;	state Exp;
branches
	1.1.1.1;
next	;

1.2.2.1
date	2012.05.21.13.31.26;	author svnexp;	state dead;
branches;
next	1.2.2.2;

1.2.2.2
date	2013.03.28.13.06.12;	author svnexp;	state Exp;
branches;
next	;

1.1.1.1
date	94.05.27.12.33.41;	author rgrimes;	state Exp;
branches;
next	;


desc
@@


1.2
log
@SVN rev 235723 on 2012-05-21 13:31:26Z by bapt

Import byacc from invisible island, it brings us lots of compatibilities with
bison, keeping full compatibility with our previous yacc implementation.

Also bring the ability to create reentrant parser

This fix bin/140309 [1]

PR:		bin/140309 [1]
Submitted by:	Philippe Pepiot <ksh@@philpep.org> [1]
Approved by:	des (mentor)
MFC after:	1 month
@
text
@Berkeley Yacc reflects its origins.  The reason so many routines
use exactly six register variables is that Berkeley Yacc was
developed on a VAX using PCC.  PCC placed at most six variables
in registers.  I went to considerable effort to find which six
variables most belonged in registers.  Changes in machines and
compilers make that effort worthless, perhaps even harmful.

The code contains many instances where address calculations are
performed in particular ways to optimize the code for the VAX.
@


1.2.2.1
log
@file NOTES was added on branch RELENG_8_4 on 2013-03-28 13:06:12 +0000
@
text
@d1 9
@


1.2.2.2
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/248810
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a0 9
Berkeley Yacc reflects its origins.  The reason so many routines
use exactly six register variables is that Berkeley Yacc was
developed on a VAX using PCC.  PCC placed at most six variables
in registers.  I went to considerable effort to find which six
variables most belonged in registers.  Changes in machines and
compilers make that effort worthless, perhaps even harmful.

The code contains many instances where address calculations are
performed in particular ways to optimize the code for the VAX.
@


1.1
log
@Initial revision
@
text
@@


1.1.1.1
log
@BSD 4.4 Lite Usr.bin Sources
@
text
@@
