Re: [dataflow] PATCH: Removed last calls to flow.

[Kenneth Zadeck <zadeck at naturalbridge dot com>]

Fixed changelog entry for cfgloop.c

it is now:
    * cfgloop.c: Ditto.
    (establish_preds, flow_loops_find): Removed ref to cfun->max_loop_depth.

Kenny

Kenneth Zadeck wrote:
> This patch finally removes all references to flow.c.  (Ding dong the
> witch is dead...)
>
> The patch also fixes more problems that were discovered in the RS6000
> implementation of PRE_MODIFY.
>
> The majority of this patch is documentation or the movement of the few
> remaining calls that were in flow but are still used.  Most of these
> had no particular reason to be in flow and many of them were moved in
> the same file as their single remaining caller and then were made
> static.
>
> live_analysis was the most difficult change.  Finding the last
> unrelated and undocumented side effects was a difficult process.  In
> the end it has been split into several separate passes, each with
> nothing to do with the other parts.  There is not any more work being
> done here, because each of these pieces was in fact a separate
> operation, it is just now this is explicit.
>
> There were other small changes and cleanups also done.  The
> instruction splitters are now only called by the pass manager and
> various cleanups to debugging were made.
>
> This patch has been bootstrapped and regression tested on three platforms:
>
> powerpc-unknown-linux-gnu
> x86_64-unknown-linux-gnu
> i686-pc-linux-gnu
>
> It adds no new regressions.  
>
> It was also tested on arm-elf.  This patch does not effect the
> outstanding regressions there.
>
> Kenny
> 2006-07-23  Kenneth Zadeck <zadeck@naturalbridge.com>
>
>     * tree-pass.h (pass_regclass_init, pass_no_new_pseudos,
>     pass_split_before_sched2): Added.
>     (pass_life, pass_remove_death_notes): Deleted.
>     * rtlanal.c: Documentation.
>     * stack-ptr-mod.c: Ditto.
>     * cfgloop.c: Ditto.
>     * output.h: Ditto.
>     * function.c: Ditto.
>     * caller-save.c: Ditto.
>     * sched-deps.c: Ditto.
>     * jump.c: Ditto.
>     * alias.c: Ditto.
>     * calls.c: Ditto.
>     * final.c: (rest_of_no_new_pseudos, pass_no_new_pseudos): Added.
>     * cfg.c (dump_regset, debug_regset): Moved from flow.c.
>     * regs.h (regs_may_share): Deleted.
>     (allocate_reg_life_data): Added.
>     * flow.c: Deleted.
>     * global.c (reg_may_share): Deleted.
>     (global_alloc): Removed support for regs_may_share.
>     * ifcvt.c (rest_or_handel_if_conversion): Removed ref to
>     clear_reg_deaths.
>     * timevar.def (TV_FLOW): Removed.
>     * recog.c (find_single_use, find_single_use_1): Moved to combine
>     and made static.
>     (split_all_insns, split_all_insns_noflow): Made static.
>     (pass_split_before_regclass): Fixed tv_id.
>     (gate_handle_split_before_sched2,
>     rest_of_handle_split_before_sched2, pass_split_before_sched2): New.
>     (pass_split_for_shorten_branches): Renamed and fixed tv_id.
>     * recog.h (find_single_use): Removed.
>     * regmove.c (find_use_as_address): Moved from flow and made
>     static.
>     * function.h (max_loop_depth): Removed.
>     * cfgcleanup.c (delete_dead_jumptables): Moved from flow.c.
>     * subregs-init.c (initialize_uninitialized_subregs): Added call to
>     allocate_reg_life_data if new regs were added. 
>     * regclass.c (max_regno, reg_set_to_hard_reg_set,
>     allocate_reg_life_data): Moved from flow.c.
>     (regclass_init): Now static and returns unsigned int.
>     (pass_regclass_init, find_subregs_of_mode): New.
>     (init_subregs_of_mode): Now fills the hash table.
>     * rtl.h (find_use_as_address, split_all_insns,
>     split_all_insns_noflow, regclass_init): Deleted.
>     * combine.c (find_single_use_1, find_single_use): Moved from recog
>     and made static.
>     (delete_noop_moves): Moved from flow.c and made static.
>     (rest_of_handle_combine): Now runs dce as part of df_init.
>     * df-problems.c (reg_n_info): Moved from flow.c.
>     (df_ri_problem_data.computed): Added field.
>     (print_note, df_set_unused_notes_for_mw, df_set_dead_notes_for_mw,
>     df_create_unused_note, df_ri_bb_compute, df_ri_compute): Changed
>     note printing to go to dump_file.
>     (df_ri_alloc, df_ri_compute, df_ri_free, df_ri_dump): Added
>     support for computed flag.
>     * Makefile.in: (flow.c flow.o): Removed.
>     * sched-rgn.c (check_dead_notes1, deaths_in_region): Removed.
>     (init_regions, add_block1): Removed last of note counting code.
>     (rest_of_handle_sched2): Moved call to split_all_insns to separate
>     pass.
>     * basic_block.h (first_insn_after_basic_block_note,
>     update_life_extent, PROP_* flags, life_analysis, update_life_info
>     update_life_info_in_dirty_blocks, count_or_remove_death_notes,
>     propagate_block, clear_reg_deaths, propagate_block_info,
>     propagate_one_insn, init_propagate_block_info,
>     free_propagate_block_info): Removed.
>     (CLEANUP_*): Renumbered.
>     sched_vis.c: (print_exp): Added proper printing for PRE and
>     POST_MODIFY.
>     * passes.c (init_optimization_passes): Added pass_regclass_init,
>     pass_no_new_pseudos, and pass_split_before_sched2.  Deleted
>     pass_life.
>     * struct-equiv.c (struct_equiv_init): Removed dead conditional.
>     * config/rs6000/rs6000.c (print_operand): More fixes for
>     PRE_MODIFY.
>     * config/rs6000/rs6000.md ("*movdf_hardfloat32",
>     "*movdf_softfloat32"): Ditto.
>     * cfgrtl (first_insn_after_basic_block_note): Moved from flow.c
>     and made static.   
>
>   
> ------------------------------------------------------------------------
>
>