Patch: delete treelang

[Tom Tromey <tromey at redhat dot com>]

Today I was debugging treelang on my branch and wondering why I was
bothering.  Then I remembered suggesting its deletion once before:

http://gcc.gnu.org/ml/gcc-patches/2007-09/msg01119.html

Andrew Pinski had the only objection, based on it not being much work.
I don't consider that a very strong reason to keep something in the
tree.  For instance, our standard for back ends is higher.

So, this patch removes treelang.

I've omitted all the deletions from the patch.  I can re-send if you
really want to see 300K of them :)

Bootstrapped and regtested on the compile farm.
Ok?

Tom


ChangeLog:
2008-03-05  Tom Tromey  <tromey@redhat.com>

	* treelang: Delete.
	* doc/standards.texi (Standards): Don't mention treelang.
	* doc/invoke.texi (Overall Options): Don't mention treelang.
	* doc/install.texi (Prerequisites): Don't mention bison or
	treelang.
	(Configuration): Don't mention treelang.
	(Building): Likewise.
	* doc/frontends.texi (G++ and GCC): Don't mention treelang.

testsuite/ChangeLog:
2008-03-05  Tom Tromey  <tromey@redhat.com>

	* lib/treelang-dg.exp, lib/treelang.exp: Delete.
	* treelang: Delete.

Index: doc/standards.texi
===================================================================
--- doc/standards.texi	(revision 132902)
+++ doc/standards.texi	(working copy)
@@ -1,4 +1,4 @@
-@c Copyright (C) 2000, 2001, 2002, 2004, 2006, 2007 Free Software Foundation,
+@c Copyright (C) 2000, 2001, 2002, 2004, 2006, 2007, 2008 Free Software Foundation,
 @c Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file gcc.texi.
@@ -219,14 +219,6 @@
 have additional useful information.
 @end itemize
 
-@section Treelang language
-@cindex treelang
-There is no standard for treelang, which is a sample language front end
-for GCC@.  Its only purpose is as a sample for people wishing to write a
-new language for GCC@.  The language is documented in
-@file{gcc/treelang/treelang.texi} which can be turned into info or
-HTML format.
-
 @xref{Top, GNAT Reference Manual, About This Guide, gnat_rm,
 GNAT Reference Manual}, for information on standard
 conformance and compatibility of the Ada compiler.
Index: doc/invoke.texi
===================================================================
--- doc/invoke.texi	(revision 132902)
+++ doc/invoke.texi	(working copy)
@@ -1001,7 +1001,6 @@
 ada
 f95  f95-cpp-input
 java
-treelang
 @end smallexample
 
 @item -x none
Index: doc/frontends.texi
===================================================================
--- doc/frontends.texi	(revision 132902)
+++ doc/frontends.texi	(working copy)
@@ -1,5 +1,5 @@
 @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-@c 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
+@c 1999, 2000, 2001, 2002, 2004, 2008 Free Software Foundation, Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file gcc.texi.
 
@@ -14,7 +14,6 @@
 @cindex Java
 @cindex Objective-C
 @cindex Objective-C++
-@cindex treelang
 GCC stands for ``GNU Compiler Collection''.  GCC is an integrated
 distribution of compilers for several major programming languages.  These
 languages currently include C, C++, Objective-C, Objective-C++, Java,
Index: doc/install.texi
===================================================================
--- doc/install.texi	(revision 132902)
+++ doc/install.texi	(working copy)
@@ -372,16 +372,6 @@
 Necessary to regenerate the top level @file{Makefile.in} file from
 @file{Makefile.tpl} and @file{Makefile.def}.
 
-@item GNU Bison version 1.28 (or later)
-
-Necessary when modifying @file{*.y} files.  Necessary to build the
-@code{treelang} front end (which is not enabled by default) from a
-checkout of the SVN repository; the generated files are not in the
-repository.  They are included in releases.
-
-Berkeley @command{yacc} (@command{byacc}) has been reported to work
-as well.
-
 @item Flex version 2.5.4 (or later)
 
 Necessary when modifying @file{*.l} files.
@@ -1161,11 +1151,11 @@
 @end smallexample
 Currently, you can use any of the following:
 @code{all}, @code{ada}, @code{c}, @code{c++}, @code{fortran}, @code{java},
-@code{objc}, @code{obj-c++}, @code{treelang}.
+@code{objc}, @code{obj-c++}.
 Building the Ada compiler has special requirements, see below.
 If you do not pass this flag, or specify the option @code{all}, then all
 default languages available in the @file{gcc} sub-tree will be configured.
-Ada, Objective-C++, and treelang are not default languages; the rest are.
+Ada and Objective-C++ are not default languages; the rest are.
 Re-defining @code{LANGUAGES} when calling @samp{make} @strong{does not}
 work anymore, as those language sub-directories might not have been
 configured!
@@ -1707,18 +1697,13 @@
 
 The solution is not to use such a directory for building GCC@.
 
-When building from SVN or snapshots and enabling the @code{treelang}
-front end, or if you modify @file{*.y} files, you need the Bison parser
-generator installed.  If you do not modify @file{*.y} files, releases
-contain the Bison-generated files and you do not need Bison installed
-to build them.  Note that most front ends now use hand-written parsers,
-which can be modified with no need for Bison.
-
 Similarly, when building from SVN or snapshots, or if you modify
-@file{*.l} files, you need the Flex lexical analyzer generator installed.
-There is still one Flex-based lexical analyzer (part of the build
-machinery, not of GCC itself) that is used even if you only build the
-C front end.
+@file{*.l} files, you need the Flex lexical analyzer generator
+installed.  If you do not modify @file{*.l} files, releases contain
+the Flex-generated files and you do not need Flex installed to build
+them.  There is still one Flex-based lexical analyzer (part of the
+build machinery, not of GCC itself) that is used even if you only
+build the C front end.
 
 When building from SVN or snapshots, or if you modify Texinfo
 documentation, you need version 4.4 or later of Texinfo installed if you