1. 18 Nov, 2020 1 commit
  2. 23 Oct, 2020 1 commit
  3. 31 Jul, 2020 1 commit
    • Mythri A's avatar
      [turboprop] Migrate deprecated maps in dynamic map check operator · 9b9ba19e
      Mythri A authored
      If incoming map is deprecated, generate code to migrate the map. Since
      this involves generating additional code and a call to runtime, we only
      do this if one of the receiver maps was a migration target when
      optimizing this function. If not, we deoptimize and discard the
      optimized code if we see a deprecated map. This is to avoid bailout
      loops when we see deprecated maps.
      
      This change does the following:
      // We generated code to migrate deprecated maps only if one of the maps
      // in feedback vector is a migration target.
      if ( there are migration targets in feedback)
      {
        if (checkMaps fails) {
           if (incoming map is deprecated) {
              migrate the map
              checkMaps with the new map
           } else {
             bailout
           }
        }
      } else {
        if (checkMaps fails)
          bailout;
      }
      
      Bug: v8:10582, v8:9684
      Change-Id: I8a04c77ed209dd2fb0300a783d844f2335a678c8
      Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2292231Reviewed-by: 's avatarSathya Gunasekaran  <gsathya@chromium.org>
      Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
      Commit-Queue: Mythri Alle <mythria@chromium.org>
      Cr-Commit-Position: refs/heads/master@{#69179}
      9b9ba19e