r118475 - in /trunk/gcc: ChangeLog Makefile.in ...

[bonzini@gcc.gnu.org]

Author: bonzini
Date: Sat Nov  4 08:36:45 2006
New Revision: 118475

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=118475
Log:
2006-11-03  Paolo Bonzini  <bonzini@gnu.org>
            Steven Bosscher  <stevenb.gcc@gmail.com>

        * fwprop.c: New file.
        * Makefile.in: Add fwprop.o.
        * tree-pass.h (pass_rtl_fwprop, pass_rtl_fwprop_with_addr): New.
        * passes.c (init_optimization_passes): Schedule forward propagation.
        * rtlanal.c (loc_mentioned_in_p): Support NULL value of the second
        parameter.
        * timevar.def (TV_FWPROP): New.
        * common.opt (-fforward-propagate): New.
        * opts.c (decode_options): Enable forward propagation at -O2.
        * gcse.c (one_cprop_pass): Do not run local cprop unless touching jumps.
        * cse.c (fold_rtx_subreg, fold_rtx_mem, fold_rtx_mem_1, find_best_addr,
        canon_for_address, table_size): Remove.
        (new_basic_block, insert, remove_from_table): Remove references to
        table_size.
        (fold_rtx): Process SUBREGs and MEMs with equiv_constant, make
        simplification loop more straightforward by not calling fold_rtx
        recursively.
        (equiv_constant): Move here a small part of fold_rtx_subreg,
        do not call fold_rtx.  Call avoid_constant_pool_reference
        to process MEMs.
        * recog.c (canonicalize_change_group): New.
        * recog.h (canonicalize_change_group): New.

        * doc/invoke.texi (Optimization Options): Document fwprop.
        * doc/passes.texi (RTL passes): Document fwprop.


Added:
    trunk/gcc/fwprop.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/common.opt
    trunk/gcc/cse.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/doc/passes.texi
    trunk/gcc/gcse.c
    trunk/gcc/opts.c
    trunk/gcc/passes.c
    trunk/gcc/recog.c
    trunk/gcc/recog.h
    trunk/gcc/rtlanal.c
    trunk/gcc/timevar.def
    trunk/gcc/tree-pass.h