[Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code

["vmakarov at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #9 from vmakarov at gcc dot gnu dot org  2008-11-10 23:23 -------
Subject: Bug 37948

Author: vmakarov
Date: Mon Nov 10 23:21:45 2008
New Revision: 141753

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=141753
Log:
2008-11-07  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimizations/37948
        * ira-int.h (struct ira_allocno_copy): New member constraint_p.
        (ira_create_copy, ira_add_allocno_copy): New parameter.

        * ira-conflicts.c (process_regs_for_copy): New parameter.  Pass it
        to ira_add_allocno_copy.
        (process_reg_shuffles, add_insn_allocno_copies): Pass a new
        parameter to process_regs_for_copy.
        (propagate_copies): Pass a new parameter to ira_add_allocno_copy.
        Fix typo in passing second allocno to ira_add_allocno_copy.

        * ira-color.c (update_conflict_hard_regno_costs): Use head of
        coalesced allocnos list.
        (assign_hard_reg): Ditto.  Check that assigned allocnos are not in
        the graph.
        (add_ira_allocno_to_bucket): Rename to add_allocno_to_bucket.
        (add_ira_allocno_to_ordered_bucket): Rename to
        add_allocno_to_ordered_bucket.
        (push_ira_allocno_to_stack): Rename to push_allocno_to_stack.  Use
        head of coalesced allocnos list.
        (push_allocnos_to_stack): Remove calculation of ALLOCNO_TEMP.
        Check that it is aready calculated.
        (push_ira_allocno_to_spill): Rename to push_ira_allocno_to_spill.
        (setup_allocno_left_conflicts_num): Use head of coalesced allocnos
        list.
        (coalesce_allocnos): Do extended coalescing too.

        * ira-emit.c (add_range_and_copies_from_move_list): Pass a new
        parameter to ira_add_allocno_copy.

        * ira-build.c (ira_create_copy, ira_add_allocno_copy): Add a new
        parameter.
        (print_copy): Print copy origination too.

        * ira-costs.c (scan_one_insn): Use alloc_pref for load from
        equivalent memory.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-build.c
    trunk/gcc/ira-color.c
    trunk/gcc/ira-conflicts.c
    trunk/gcc/ira-costs.c
    trunk/gcc/ira-emit.c
    trunk/gcc/ira-int.h


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948