[Bug tree-optimization/26854] Inordinate compile times on large routines

[zadeck at gcc dot gnu dot org]

------- Comment #59 from zadeck at gcc dot gnu dot org  2008-01-20 01:49 -------
Subject: Bug 26854

Author: zadeck
Date: Sun Jan 20 01:48:25 2008
New Revision: 131670

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131670
Log:
2008-01-19  Kenneth Zadeck <zadeck@naturalbridge.com>

        PR rtl-optimization/26854
        PR rtl-optimization/34400
        * ddg.c (create_ddg_dep_from_intra_loop_link): Do not use
        DF_RD->gen.
        * df.h (df_changeable_flags.DF_RD_NO_TRIM): New.
        (df_rd_bb_info.expanded_lr_out): New.
        * loop_invariant.c (find_defs): Added DF_RD_NO_TRIM flag.
        * loop_iv.c (iv_analysis_loop_init): Ditto.
        * df-problems.c (df_rd_free_bb_info, df_rd_alloc, df_rd_confluence_n,
        df_rd_bb_local_compute, df_rd_transfer_function, df_rd_free):
        Added code to allocate, initialize or free expanded_lr_out.
        (df_rd_bb_local_compute_process_def): Restructured to make
        more understandable.
        (df_rd_confluence_n): Add code to do nothing with fake edges and
        code to no apply invalidate_by_call sets if the sets are being trimmed.
        (df_lr_local_finalize): Renamed to df_lr_finalize.
        (df_live_local_finalize): Renamed to df_live_finalize.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ddg.c
    trunk/gcc/df-problems.c
    trunk/gcc/df.h
    trunk/gcc/loop-invariant.c
    trunk/gcc/loop-iv.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26854