r136169 - in /branches/sel-sched-branch/gcc: Ch...

[abel at gcc dot gnu dot org]

Author: abel
Date: Thu May 29 14:28:58 2008
New Revision: 136169

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=136169
Log:
2008-05-29  Dmitry Melnik  <dm@ispras.ru>
            Andrey Belevantsev  <abel@ispras.ru>

        * sel-sched.c (struct rtx_search_arg): Kill y, max_occur, iter, and
        bitmask fields.  Adjust all uses.
        (struct reg_rename): Add crosses_call field.
        (struct cmpd_local_params): Kill generated_nop field.
        MAke removed_last_insn a bool bitfield.
        (struct moveop_static_params): New field was_renamed.
        (vec_blocked_vinsns): Rename to vec_bookkeeping_blocked_vinsns.
        (vec_target_unavailable_vinsns): New.
        (rtx_search): Rename to rtx_ok_for_substitution_p.  Adjust all uses.
        (count_occurrences_1): Bail out if we find a multi-reg reference.
        (choose_best_pseudo_reg): Do not let a register cross a call if
        it doesn't already cross one.  Initialize REG_N_CALLS_CROSSED for
        the new pseudo register.
        (verify_target_availability): Pass reg_rename instead of
        unavailable_hard_regs to it.  Fix assert to consider
        REG_N_CALLS_CROSSED.
        (find_used_regs): Compute reg_rename_p->crosses_call.
        (vinsn_vec_has_expr_p, vinsn_vec_clear, vinsn_vec_add,
        vinsn_vec_free): New functions instead of add_to_blocked_exprs,
        free_blocked_exprs, clear_blocked_exprs, expr_blocked_by_bookkeeping_p.
        Adjust all uses.
        (fill_vec_av_set): Reset target_available bit for expressions which
        were already scheduled with another register on the fences.
        (emit_insn_from_expr_after): Restore the check for HARD_REGISTER_NUM_P.
        (compute_av_set_on_boundaries): When rewinding a boundary, also set
        FENCE_INSN correctly.
        (fill_insns): Pass fence to compute_av_set_on_boundaries.
        (schedule_expr_on_boundary): Compute cant_move before move_op.
        Add only renamed exprs to vec_target_unavailable_vinsns.
        (maybe_emit_renaming_copy): Set params->was_renamed to true.
        (remove_insn_from_stream): Also generate nop when we hit another fence.
        (move_op_at_first_insn): Generate bookkeeping and update sets only
        on non-toplevel move_op.
        (code_motion_process_successors): Also rescan when number of successors
        has changed.
        (move_op): Set EXPR_WAS_RENAMED to true when we renamed any of the insns
        found.
        (init_seqno): When not rescheduling, pass number of insns in a region
        instead of computing it from sched_max_luid.
        (purge_empty_blocks): New, factored out from ...
        (sel_region_init): ... here.  Even when we do not have to schedule
        the region, initialize its data for bundling.
        (sel_sched_region_1): Call purge_empty_blocks from here.
        * opts.c Set sel_sched_switch_set also when -fselective-scheduling.
        * sel-sched-ir.c (sel_move_insn): Assert that we have disconnected
        this insn properly.
        (merge_expr_data): Fix thinko.
        (set_unavailable_target_for_expr): Properly set EXPR_TARGET_AVAILABLE.
        (maybe_tidy_empty_bb): Export.  Free data sets in here, not ...
        (tidy_control_flow): ... here.  Do not apply the optimization
        to empty bbs.  Verify backedges later.
        (remove_empty_bb): Use sel_redirect_edge_and_branch.
        * sched-deps.c (maybe_extend_reg_info_p): New.
        (sched_analyze_reg): Use it.
        * config/ia64/ia64.c (ia64_set_sched_flags): Disable control speculation
        before reload.


Modified:
    branches/sel-sched-branch/gcc/ChangeLog.sel-sched
    branches/sel-sched-branch/gcc/config/ia64/ia64.c
    branches/sel-sched-branch/gcc/opts.c
    branches/sel-sched-branch/gcc/sched-deps.c
    branches/sel-sched-branch/gcc/sched-int.h
    branches/sel-sched-branch/gcc/sched-rgn.c
    branches/sel-sched-branch/gcc/sel-sched-ir.c
    branches/sel-sched-branch/gcc/sel-sched-ir.h
    branches/sel-sched-branch/gcc/sel-sched.c