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    • ishell's avatar
      Revert of Reland "Filter invalid slots out from the SlotsBuffer after... · de018fbd
      ishell authored 
      Revert of Reland "Filter invalid slots out from the SlotsBuffer after marking." (patchset #2 id:2 of https://codereview.chromium.org/1032833002/)

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}
      de018fbd
  21. 25 Mar, 2015 1 commit
    • ulan's avatar
      Reland "Filter invalid slots out from the SlotsBuffer after marking." · f86aadd1
      ulan authored 
      > 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

Review URL: https://codereview.chromium.org/1032833002

Cr-Commit-Position: refs/heads/master@{#27433}
      f86aadd1
  23. 24 Mar, 2015 4 commits
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  35. 09 Mar, 2015 2 commits
    • hpayer's avatar
      Eliminate invalid pointers in store buffer after marking. · aee169ec
      hpayer authored 
      The store buffer can contain stale store buffer entries, i.e., slot in dead objects pointing to new space objects. These slots are treaded as live slots which cause problems with non-pointer fields and makes concurrent sweeping complicated. Removing these pointers from the store buffer before it is used makes life easier.

BUG=

Review URL: https://codereview.chromium.org/985453003

Cr-Commit-Position: refs/heads/master@{#27068}
      aee169ec
    • ishell@chromium.org's avatar
      Revert of Remove slots that point to unboxed doubles from the... · 67a02321
      ishell@chromium.org authored 
      Revert of Remove slots that point to unboxed doubles from the StoreBuffer/SlotsBuffer. (patchset #4 id:230001 of https://codereview.chromium.org/957273002/)

Reason for revert:
It caused a lot of Canary crashes.

Original issue's description:
> Remove slots that point to unboxed doubles from the StoreBuffer/SlotsBuffer.
>
> The problem is that 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
>
> Committed: https://crrev.com/9633ebabd405c264d33f603f8798c31f59418dcd
> Cr-Commit-Position: refs/heads/master@{#27054}

TBR=verwaest@chromium.org,hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:454297

Review URL: https://codereview.chromium.org/991793002

Cr-Commit-Position: refs/heads/master@{#27063}
      67a02321
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