[Bug other/50775] Register allocator sets up frame and frame pointer with low register pressure

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50775

--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2011-12-05 
17:02:59 UTC ---
Author: vmakarov
Date: Mon Dec  5 17:02:54 2011
New Revision: 182015

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182015
Log:
2011-12-05  Vladimir Makarov  <vmaka...@redhat.com>

    PR other/50775
    * ira-int.h (struct ira_object): Remove add_data.
    (OBJECT_ADD_DATA): Remove.

    * ira-build.c (ira_create_object): Remove OBJECT_ADD_DATA
    initialization.

    * ira-color.c (object_hard_regs_t, object_hard_regs): Rename to
    allocno_hard_regs_t, allocno_hard_regs.
    (object_hard_regs_node_t, object_hard_regs_node): Rename to
    allocno_hard_regs_node_t and allocno_hard_regs_node.
    (struct allocno_color_data): Add new member last_process.  Move
    profitable_hard_regs, hard_regs_node, and hard_regs_subnodes_start
    from object_color_data.
    (object_color_data_t, object_color_data, OBJECT_COLOR_DATA):
    Remove.
    (curr_allocno_process): New static variable.
    (object_hard_regs_eq, object_hard_regs_htab): Rename to
    allocno_hard_regs_eq and allocno_hard_regs_htab.
    (init_object_hard_regs, finish_object_hard_regs): Rename to
    init_allocno_hard_regs and finish_allocno_hard_regs.
    (object_hard_regs_compare, object_hard_regs_node_t): Rename to
    allocno_hard_regs_compare and allocno_hard_regs_node_t.
    (create_new_object_hard_regs_node): Rename to
    create_new_allocno_hard_regs_node.
    (add_new_object_hard_regs_node_to_forest): Rename to
    add_new_allocno_hard_regs_node_to_forest.
    (add_object_hard_regs_to_forest, collect_object_hard_regs_cover):
    Rename to add_allocno_hard_regs_to_forest and
collect_allocno_hard_regs_cover.
    (setup_object_hard_regs_nodes_parent): Rename to
setup_allocno_hard_regs_nodes_parent.
    (remove_unused_object_hard_regs_nodes): Rename to
remove_unused_allocno_hard_regs_nodes.
    (enumerate_object_hard_regs_nodes, object_hard_regs_nodes_num):
    Rename to enumerate_allocno_hard_regs_nodes and
allocno_hard_regs_nodes_num.
    (object_hard_regs_nodes, object_hard_regs_subnode_t): Rename to
    allocno_hard_regs_nodes and allocno_hard_regs_subnode_t.
    (object_hard_regs_subnode, object_hard_regs_subnodes): Rename to
    allocno_hard_regs_subnode and allocno_hard_regs_subnodes.
    (object_hard_regs_subnode_index): Rename to
allocno_hard_regs_subnode_index.
    (setup_object_hard_regs_subnode_index): Rename to
    setup_allocno_hard_regs_subnode_index.
    (get_object_hard_regs_subnodes_num): Rename to
get_allocno_hard_regs_subnodes_num.
    (form_object_hard_regs_nodes_forest): Rename to
form_allocno_hard_regs_nodes_forest.
    (finish_object_hard_regs_nodes_tree): Rename to
form_allocno_hard_regs_nodes_forest
    (finish_object_hard_regs_nodes_forest): Rename to
    finish_allocno_hard_regs_nodes_forest.
    (setup_left_conflict_sizes_p): Use allocno data instead of object
    ones.  Process conflict allocnos once.
    (update_left_conflict_sizes_p): Use allocno data instead of object
    ones.  Change prototype signature.
    (empty_profitable_hard_regs): Use allocno data instead of object
    ones.
    (setup_profitable_hard_regs): Ditto.
    (get_conflict_profitable_regs): Rename to
    get_conflict_and_start_profitable_regs.  Use allocno data for
    profitable regs calculation.
    (check_hard_reg_p): Change prototype signature.  Check profitable
    regs for allocno not the objects.
    (assign_hard_reg): Process conflict allocnos only once for
    updating conflict costs.
    (setup_allocno_available_regs_num): Use allocno data instead of
    object ones.  Modify debug output.
    (color_pass): Remove initialization and finalization of object
    color data.


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