[Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89306

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 18 08:21:23 2019
New Revision: 268979

URL: https://gcc.gnu.org/viewcvs?rev=268979&root=gcc&view=rev
Log:
Come up with fast {function,call}_summary classes (PR ipa/89306).

2019-02-18  Martin Liska  <mliska@suse.cz>

        PR ipa/89306
        * cgraph.c (symbol_table::create_edge): Set m_summary_id to -1
        by default.
        (symbol_table::free_edge): Recycle m_summary_id.
        * cgraph.h (get_summary_id): New.
        (symbol_table::release_symbol): Set m_summary_id to -1
        by default.
        (symbol_table::allocate_cgraph_symbol): Recycle m_summary_id.
        * ipa-fnsummary.c (ipa_fn_summary_t): Switch from
        function_summary to fast_function_summary.
        * ipa-fnsummary.h (ipa_fn_summary_t): Likewise.
        * ipa-pure-const.c (class funct_state_summary_t):
        Switch from function_summary to fast_function_summary.
        * ipa-reference.c (class ipa_ref_var_info_summary_t): Likewise.
        (class ipa_ref_opt_summary_t): Switch from function_summary
        to fast_function_summary.
        * symbol-summary.h (class function_summary_base): New class
        that is created from base of former function_summary.
        (function_summary_base::unregister_hooks): New.
        (class function_summary): Inherit from function_summary_base.
        (class call_summary_base): New class
        that is created from base of former call_summary.
        (class call_summary): Inherit from call_summary_base.
        (struct is_same): New.
        (class fast_function_summary): New summary class.
        (class fast_call_summary): New summary class.
        * vec.h (vec_safe_grow_cleared): New function.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cgraph.c
    trunk/gcc/cgraph.h
    trunk/gcc/ipa-fnsummary.c
    trunk/gcc/ipa-fnsummary.h
    trunk/gcc/ipa-pure-const.c
    trunk/gcc/ipa-reference.c
    trunk/gcc/symbol-summary.h
    trunk/gcc/vec.h