Revert of SkLiteDL: turn vtable sideways (patchset #7 id:120001 of https://codereview.chromium.org/2231103002/ )
Reason for revert:
speculative revert to fix DEPS roll
Original issue's description:
> SkLiteDL: turn vtable sideways
>
> Instead of using virtuals for polymorphism, store each polymorphic operation
> in its own array of function pointers. This removes an indirection when calling
> the function, and lets us use nullptr as a signal to skip the call entirely.
>
> Unfortunately (as the old code is rather simpler) this makes an unambiguous speed improvement.
>
> Before:
> curr/maxrss loops min median mean max stddev samples config bench
> 21/26 MB 2 44.6µs 46.4µs 48.3µs 274µs 13% 51724 nonrendering desk_nytimes.skp
> 23/26 MB 11 11.4µs 11.9µs 12.4µs 75.1µs 15% 36716 nonrendering keymobi_nytimes_com_.skp
>
> After:
> 19/26 MB 4 40.4µs 41.6µs 42.5µs 197µs 10% 29379 nonrendering desk_nytimes.skp
> 20/26 MB 14 10.5µs 10.7µs 11.2µs 59.5µs 13% 31971 nonrendering keymobi_nytimes_com_.skp
>
> Broader comparison:
> keymobi_linkedin.skp 1.76us -> 1.77us 1x
> keymobi_bing_com_search_q_sloth.skp 5.09us -> 5.05us 0.99x
> keymobi_digg_com.skp 17.4us -> 17.3us 0.99x
> keymobi_theverge_com.skp 3.37us -> 3.34us 0.99x
> top25desk_mail_google_com_mail_.skp 30.8us -> 30.4us 0.99x
> tabl_gmail.skp 3.44us -> 3.38us 0.98x
> top25desk_wikipedia__1_tab_.skp 100us -> 97.7us 0.98x
> keymobi_cnn_com_2012_10_03_poli.skp 52.9us -> 51.7us 0.98x
> desk_chalkboard.skp 107us -> 104us 0.97x
> desk_css3gradients.skp 17.8us -> 17.3us 0.97x
> keymobi_androidpolice_com_2012_.skp 42.3us -> 41.1us 0.97x
> desk_googlehome.skp 1.94us -> 1.88us 0.97x
> keymobi_mlb_com_.skp 5.38us -> 5.18us 0.96x
> top25desk_pinterest.skp 92.1us -> 88.5us 0.96x
> keymobi_iphone_capitolvolkswage.skp 15.1us -> 14.5us 0.96x
> keymobi_techcrunch_com.skp 9.45us -> 9.05us 0.96x
> desk_espn.skp 31.3us -> 30us 0.96x
> keymobi_slashdot_org_.skp 8.72us -> 8.34us 0.96x
> desk_tiger8svg.skp 30.6us -> 29.2us 0.96x
> keymobi_blogger.skp 4.09us -> 3.91us 0.95x
> keymobi_baidu_com_s_wd_barack_o.skp 11.9us -> 11.3us 0.95x
> keymobi_cuteoverload_com.skp 54.2us -> 51.6us 0.95x
> keymobi_deviantart_com_.skp 17.2us -> 16.4us 0.95x
> desk_mapsvg.skp 163ns -> 155ns 0.95x
> keymobi_pinterest.skp 6.97us -> 6.62us 0.95x
> top25desk_games_yahoo_com.skp 94.1us -> 89.3us 0.95x
> top25desk_google_com_calendar_.skp 18us -> 17us 0.95x
> keymobi_google_co_uk_search_hl_.skp 11.4us -> 10.8us 0.95x
> tabl_pravda.skp 38.5us -> 36.4us 0.94x
> desk_gmailthread.skp 19us -> 17.9us 0.94x
> keymobi_reddit_com_r_programmin.skp 76.1us -> 71.7us 0.94x
> top25desk_linkedin.skp 20us -> 18.8us 0.94x
> tabl_gamedeksiam.skp 118us -> 112us 0.94x
> keymobi_boingboing_net.skp 20.4us -> 19.1us 0.93x
> top25desk_google_com__hl_en_q_b.skp 17.6us -> 16.4us 0.93x
> keymobi_amazon_com_gp_aw_s_ref_.skp 12.5us -> 11.6us 0.93x
> keymobi_sfgate_com_.skp 16.6us -> 15.5us 0.93x
> keymobi_booking_com_searchresul.skp 16.2us -> 15.1us 0.93x
> tabl_digg.skp 28.8us -> 26.8us 0.93x
> tabl_mozilla.skp 80.4us -> 74.6us 0.93x
> desk_wowwiki.skp 39.2us -> 36.4us 0.93x
> top25desk_youtube_com.skp 42us -> 38.9us 0.93x
> top25desk_facebook.skp 23.7us -> 22us 0.93x
> top25desk_blogger.skp 38.2us -> 35.4us 0.93x
> keymobi_online_wsj_com_home_pag.skp 12.8us -> 11.9us 0.93x
> top25desk_wordpress.skp 28.9us -> 26.8us 0.93x
> top25desk_answers_yahoo_com.skp 37.2us -> 34.4us 0.93x
> keymobi_plus_google_com_app_bas.skp 9.56us -> 8.85us 0.93x
> keymobi_wordpress.skp 16.1us -> 14.9us 0.92x
> keymobi_mobile_news_sandbox_goo.skp 27.1us -> 24.9us 0.92x
> top25desk_techcrunch_com.skp 31.1us -> 28.6us 0.92x
> keymobi_worldjournal_com_.skp 50.7us -> 46.5us 0.92x
> keymobi_theverge_com_2012_10_28.skp 26.2us -> 24us 0.92x
> desk_jsfiddlebigcar.skp 1.73us -> 1.59us 0.92x
> top25desk_weather_com.skp 31.3us -> 28.7us 0.92x
> top25desk_google_com_search_q_c.skp 48.2us -> 44.1us 0.92x
> top25desk_twitter.skp 27.8us -> 25.5us 0.92x
> tabl_worldjournal.skp 29.3us -> 26.8us 0.91x
> desk_nytimes.skp 46us -> 42us 0.91x
> top25desk_docs___1_open_documen.skp 6.04us -> 5.51us 0.91x
> keymobi_wikipedia__1_tab_.skp 59.7us -> 54.4us 0.91x
> desk_unicodetable.skp 1.12ms -> 1.02ms 0.91x
> top25desk_ebay_com.skp 17.8us -> 16.2us 0.91x
> keymobi_ftw_usatoday_com_2014_0.skp 26.8us -> 24.3us 0.91x
> top25desk_sports_yahoo_com_.skp 49.9us -> 45.3us 0.91x
> keymobi_cnn_com.skp 9.94us -> 9.03us 0.91x
> keymobi_m_youtube_com_watch_v_9.skp 13.4us -> 12.2us 0.91x
> top25desk_amazon_com.skp 26.6us -> 24.1us 0.91x
> keymobi_news_yahoo_com.skp 17.5us -> 15.8us 0.9x
> keymobi_wowwiki_com_world_of_wa.skp 11.2us -> 10.2us 0.9x
> top25desk_plus_google_com_11003.skp 93.5us -> 84.4us 0.9x
> desk_carsvg.skp 53.5us -> 48.2us 0.9x
> top25desk_news_yahoo_com.skp 44.7us -> 40.3us 0.9x
> keymobi_wikipedia__1_tab____del.skp 59.4us -> 53.4us 0.9x
> desk_googlespreadsheet.skp 66us -> 59.2us 0.9x
> keymobi_answers_yahoo_com_quest.skp 30.2us -> 27us 0.89x
> desk_ugamsolutions.skp 13us -> 11.6us 0.89x
> keymobi_shop_mobileweb_ebay_com.skp 6.96us -> 6.21us 0.89x
> keymobi_nytimes_com_.skp 12.1us -> 10.8us 0.89x
> keymobi_gsp_ro.skp 5.54us -> 4.92us 0.89x
> top25desk_booking_com.skp 54.9us -> 48.6us 0.89x
> top25desk_espn.skp 37us -> 32.6us 0.88x
> keymobi_facebook_com_barackobam.skp 23.3us -> 20.4us 0.88x
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2231103002
>
> Committed: https://skia.googlesource.com/skia/+/ac243914af957a806d842318a43dddaf5f941dc3
TBR=mtklein@google.com,mtklein@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
Review-Url: https://codereview.chromium.org/2232183002
2 files changed