MELT plugin 0.9.2 rc1 for GCC 4.6 (& future 4.7) available

[Basile Starynkevitch <basile at starynkevitch dot net>]

Hello All,

It is my pleasure to announce the MELT plugin 0.9.2 release candidate 1

December XXth, 2011: Release of MELT plugin 0.9.2 for gcc-4.6 (& future gcc-4.7)
	dedicated to the memory of John McCarthy
        http://en.wikipedia.org/wiki/John_McCarthy_(computer_scientist)


MELT is a high-level domain specific language to extend GCC (GPLv3 licensed, FSF oopyrighted)

You can download the gzipped source tar archive, from
http://gcc-melt.org/melt-0.9.2-rc1-plugin-for-gcc-4.6.tgz of size 4187121
bytes and md5sum fcc815967094a35f70a4f8e575ab3ca7 (december 02nd 2011). It
is extracted from MELT branch svn revision 181905 The version number 0.9.2
of the MELT plugin is unrelated to the version of the GCC compiler (4.6 or
4.7) for which it is supposed to work. Bug reports and patches are welcome
(to the gcc-melt@googlegroups.com list).




############################### NEWS for MELT 0.9.2 
Several bug fixes.

New features:

    cloning of values
    =================

The CLONE_WITH_DISCRIMINANT primitive -whose implementation is mostly
generated- enables creating new values, nearly clones of old
ones. Usage is

    (clone_with_discriminant <old-value> <new-discriminant>)

If the new discriminant is compatible with the old value's
discriminant, a new value is allocated. If it is not compatible nor
not a discriminant, the old value is returned. In particular, it is
possible to use 
   (clone_with_discriminant (lambda ....) discr_debug_closure) 
to make a debugging closure.

   debugging closures 
   ==================

The DEBUG macro (and the underlying MELT_DEBUG_FUN which you should
not use directly) handles closure with the DISCR_DEBUG_CLOSURE
discriminant specially (somehow like C++ manipulators for
ostream-s). If an argument is a debugging closure of exactly the
DISCR_DEBUG_CLOSURE discriminant, the next argument is displayed using
that debugging closure.

   Walking SSA use-def chains
   ==========================

The primitives WALK_USE_DEF_CHAIN_BREADTH_FIRST &
WALK_USE_DEF_CHAIN_DEPTH_FIRST enables to walk thru the use-def chains
in SSA passes.

   More support notably for Gimple & Tree
   ======================================

Several functions, cmatchers, primitives have been defined, notably
GIMPLE_ASSIGN_TO, WALK_USE_DEF_CHAIN_BREADTH_FIRST &
WALK_USE_DEF_CHAIN_DEPTH_FIRST, EACHGIMPLEPHI_IN_BASICBLOCK


  New MELT hooks for PLUGIN_FINISH_TYPE & PLUGIN_FINISH_DECL
  ==========================================================

MELT functions can be registered using
REGISTER_FINISH_TYPE_HOOK_FIRST, REGISTER_FINISH_TYPE_HOOK_LAST,
REGISTER_FINISH_DECL_HOOK_FIRST, REGISTER_FINISH_DECL_HOOK_LAST. The
argument is a boxed tree value. The PLUGIN_FINISH_DECL don't exist in
GCC 4.6 (only in GCC 4.7 and later).

  New MELT hooks for other events
  ===============================
 
MELT functions can be register for PLUGIN_ALL_PASSES_START,
     PLUGIN_ALL_PASSES_END, PLUGIN_ALL_IPA_PASSES_START,
     PLUGIN_ALL_IPA_PASSES_END, PLUGIN_EARLY_GIMPLE_PASSES_START,
     PLUGIN_EARLY_GIMPLE_PASSES_END event using
 REGISTER_ALL_IPA_PASSES_END_HOOK_FIRST
 REGISTER_ALL_IPA_PASSES_END_HOOK_LAST
 REGISTER_ALL_IPA_PASSES_START_HOOK_FIRST
 REGISTER_ALL_IPA_PASSES_START_HOOK_LAST
 REGISTER_ALL_PASSES_END_HOOK_FIRST
 REGISTER_ALL_PASSES_END_HOOK_LAST
 REGISTER_ALL_PASSES_START_HOOK_FIRST
 REGISTER_ALL_PASSES_START_HOOK_LAST
 REGISTER_EARLY_GIMPLE_PASSES_END_HOOK_FIRST
 REGISTER_EARLY_GIMPLE_PASSES_END_HOOK_LAST
 REGISTER_EARLY_GIMPLE_PASSES_START_HOOK_FIRST
 REGISTER_EARLY_GIMPLE_PASSES_START_HOOK_LAST


  More runtime code generated
  ===========================
More runtime code is generated internally.


################################################################

Bug reports and suggestions are always welcome on gcc-melt@googlegroups.com
or on gcc@gcc.gnu.org. Patches are welcome on gcc-melt@googlegroups.com and
on gcc-patches@gcc.gnu.org with [MELT] tag.

Regards.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359
8, rue de la Faiencerie, 92340 Bourg La Reine, France
*** opinions {are only mines, sont seulement les miennes} ***