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Pedro Alves 47e77640be Make language_def O(1)
Profiling GDB with the rest of series applied, I saw calls to
language_def showing up high in some runs.  The problem is that
language_def is O(N) currently, since walk the languages vector each
time to find the matching language_defn.

IMO, the add_language mechanism is pointless, because "enum language"
implies the core of GDB needs to know about all languages anyway.  So
simply make the languages vector array be an array where each
element's index is the corresponding enum language enumerator.  Note
that "local_language_defn" is gone along the way.  It's just a copy of
"auto", so the new code simply maps one to the other.  One fewer place
to update when we need to change the language vector...

Also, a while ago the output of "set language" was made out of order
as side effect of some other change.  While I was at it, I made them
sorted again.

gdb/ChangeLog:
2017-07-20  Pedro Alves  <palves@redhat.com>

	* ada-lang.c (ada_language_defn): Make extern.
	(_initialize_ada_language): Remove add_language call.
	* c-lang.c (c_language_defn, cplus_language_defn)
	(asm_language_defn, minimal_language_defn): Make extern.
	(_initialize_c_language): Delete.
	* completer.c (compare_cstrings): Delete, moved to utils.h.
	* d-lang.c (d_language_defn): Make extern.
	(_initialize_d_language): Remove add_language calls.
	* defs.h (enum language): Add comment.
	* f-lang.c (f_language_defn): Make extern.
	(_initialize_f_language): Remove add_language call.
	* go-lang.c (go_language_defn): Make extern.
	(_initialize_go_language): Remove add_language call.
	* language.c: Include <algorithm>.
	(languages): Redefine as const array.
	(languages_size, languages_allocsize, DEFAULT_ALLOCSIZE): Delete.
	(set_language_command): Handle "local".  Use for-range loop.
	(set_language): Remove loop.
	(language_enum): Rewrite.
	(language_def, language_str): Remove loops.
	(add_language): Delete.
	(add_set_language_command): New, based on add_languages.
	(skip_language_trampoline): Adjust.
	(local_language_defn): Delete.
	(language_gdbarch_post_init): Adjust.
	(_initialize_language): Remove add_language calls.  Call
	add_set_language_command.
	* language.h (add_language): Delete.
	(auto_language_defn)
	(unknown_language_defn, minimal_language_defn, ada_language_defn)
	(asm_language_defn, c_language_defn, cplus_language_defn)
	(d_language_defn, f_language_defn, go_language_defn)
	(m2_language_defn, objc_language_defn, opencl_language_defn)
	(pascal_language_defn, rust_language_defn): Declare.
	* m2-lang.c (m2_language_defn): Make extern.
	(_initialize_m2_language): Remove add_language call.
	* objc-lang.c (objc_language_defn): Make extern.
	(_initialize_objc_language): Remove add_language call.
	* opencl-lang.c (opencl_language_defn): Make extern.
	(_initialize_opencl_language): Remove add_language call.
	* p-lang.c (pascal_language_defn): Make extern.
	(_initialize_pascal_language): Delete.
	* rust-lang.c (rust_language_defn): Make extern.
	(_initialize_rust_language): Delete.
	* utils.h (compare_cstrings): New static inline function.

gdb/testsuite/ChangeLog:
2017-07-20  Pedro Alves  <palves@redhat.com>

	* gdb.base/default.exp (set language): Adjust expected output.
2017-07-20 18:28:01 +01:00
bfd Automatic date update in version.in 2017-07-20 00:00:34 +00:00
binutils Remove datasize measurements based on sbrk() 2017-07-19 09:55:12 +02:00
config
cpu
elfcpp
etc
gas [ARC] Add JLI support. 2017-07-19 09:56:55 +02:00
gdb Make language_def O(1) 2017-07-20 18:28:01 +01:00
gold Fix spelling typos. 2017-07-18 16:58:14 +01:00
gprof
include [ARC] Add SJLI instruction. 2017-07-19 09:56:55 +02:00
intl
ld PR ld/16656: Add missing annotation to the relevant ChangeLog entries 2017-07-20 00:39:57 +01:00
libdecnumber
libiberty
opcodes Update the German translation for the opcodes library. 2017-07-20 11:47:16 +01:00
readline
sim
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.