de018fbda3
Reason for revert: Reverting risky GC changes that block v8 roll. Original issue's description: > Reland "Filter invalid slots out from the SlotsBuffer after marking." > > > There are two reasons that could cause invalid slots appearance in SlotsBuffer: > > 1) If GC trims "tail" of an array for which it has already recorded a slots and then migrate another object to the "tail". > > 2) Tagged slot could become a double slot after migrating of an object to another map with "shifted" fields (for example as a result of generalizing immutable data property to a data field). > > > This CL also adds useful machinery that helps triggering incremental write barriers. > > > BUG=chromium:454297 > > LOG=Y > > NOTRY=true > > Committed: https://crrev.com/f86aadd1d45c756467dff8e08a055b462d7a060b > Cr-Commit-Position: refs/heads/master@{#27433} TBR=machenbach@chromium.org,ulan@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Review URL: https://codereview.chromium.org/1041593002 Cr-Commit-Position: refs/heads/master@{#27491} |
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