Revert of [turbofan] General consolidation of element access.

Revert of [turbofan] General consolidation of element access. (patchset #1 id:1 of https://codereview.chromium.org/2836913004/ )

Reason for revert:
Breaks load:tools:drive story

Original issue's description:
> [turbofan] General consolidation of element access.
> 
> Avoid TransitionElementsKind when storing to objects which only differ
> in holeyness of their elements kind. Instead go for polymorphic
> CheckMaps, which can often by optimized and avoid the mutation of the
> array map.
> 
> This generalizes the approach https://codereview.chromium.org/2836943003
> which covered only element loads.
> 
> R=yangguo@chromium.org
> BUG=v8:5267
> 
> Review-Url: https://codereview.chromium.org/2836913004
> Cr-Commit-Position: refs/heads/master@{#44828}
> Committed: https://chromium.googlesource.com/v8/v8/+/ed573cee5c1d1e42158829dc0b92fb697234e121

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5267, chromium:715936
Review-Url: https://codereview.chromium.org/2852623002
Cr-Commit-Position: refs/heads/master@{#44958}
Committed: https://chromium.googlesource.com/v8/v8/+/53d31d0623bd88ce9a0041a767f36eafd3f1de8b

[Benedikt Meurer, 2017-04-28 05:04:54]

Created Revert of [turbofan] General consolidation of element access.

[Benedikt Meurer, 2017-04-28 05:05:13]

Description was changed from

==========
Revert of [turbofan] General consolidation of element access. (patchset #1 id:1
of https://codereview.chromium.org/2836913004/ )

Reason for revert:
Breaks load:tools:drive story

Original issue's description:
> [turbofan] General consolidation of element access.
> 
> Avoid TransitionElementsKind when storing to objects which only differ
> in holeyness of their elements kind. Instead go for polymorphic
> CheckMaps, which can often by optimized and avoid the mutation of the
> array map.
> 
> This generalizes the approach https://codereview.chromium.org/2836943003
> which covered only element loads.
> 
> R=yangguo@chromium.org
> BUG=v8:5267
> 
> Review-Url: https://codereview.chromium.org/2836913004
> Cr-Commit-Position: refs/heads/master@{#44828}
> Committed:
https://chromium.googlesource.com/v8/v8/+/ed573cee5c1d1e42158829dc0b92fb69723...

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5267
==========

to

==========
Revert of [turbofan] General consolidation of element access. (patchset #1 id:1
of https://codereview.chromium.org/2836913004/ )

Reason for revert:
Breaks load:tools:drive story

Original issue's description:
> [turbofan] General consolidation of element access.
> 
> Avoid TransitionElementsKind when storing to objects which only differ
> in holeyness of their elements kind. Instead go for polymorphic
> CheckMaps, which can often by optimized and avoid the mutation of the
> array map.
> 
> This generalizes the approach https://codereview.chromium.org/2836943003
> which covered only element loads.
> 
> R=yangguo@chromium.org
> BUG=v8:5267
> 
> Review-Url: https://codereview.chromium.org/2836913004
> Cr-Commit-Position: refs/heads/master@{#44828}
> Committed:
https://chromium.googlesource.com/v8/v8/+/ed573cee5c1d1e42158829dc0b92fb69723...

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5267,chromium:715936
==========

[Benedikt Meurer, 2017-04-28 05:05:21]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-04-28 05:05:24]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-28 05:40:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493355921232000, "parent_rev":
"0be5596cdb2becaf746a2de3564cac9547be4874", "commit_rev":
"53d31d0623bd88ce9a0041a767f36eafd3f1de8b"}

[commit-bot: I haz the power, 2017-04-28 05:40:52]

Description was changed from

==========
Revert of [turbofan] General consolidation of element access. (patchset #1 id:1
of https://codereview.chromium.org/2836913004/ )

Reason for revert:
Breaks load:tools:drive story

Original issue's description:
> [turbofan] General consolidation of element access.
> 
> Avoid TransitionElementsKind when storing to objects which only differ
> in holeyness of their elements kind. Instead go for polymorphic
> CheckMaps, which can often by optimized and avoid the mutation of the
> array map.
> 
> This generalizes the approach https://codereview.chromium.org/2836943003
> which covered only element loads.
> 
> R=yangguo@chromium.org
> BUG=v8:5267
> 
> Review-Url: https://codereview.chromium.org/2836913004
> Cr-Commit-Position: refs/heads/master@{#44828}
> Committed:
https://chromium.googlesource.com/v8/v8/+/ed573cee5c1d1e42158829dc0b92fb69723...

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5267,chromium:715936
==========

to

==========
Revert of [turbofan] General consolidation of element access. (patchset #1 id:1
of https://codereview.chromium.org/2836913004/ )

Reason for revert:
Breaks load:tools:drive story

Original issue's description:
> [turbofan] General consolidation of element access.
> 
> Avoid TransitionElementsKind when storing to objects which only differ
> in holeyness of their elements kind. Instead go for polymorphic
> CheckMaps, which can often by optimized and avoid the mutation of the
> array map.
> 
> This generalizes the approach https://codereview.chromium.org/2836943003
> which covered only element loads.
> 
> R=yangguo@chromium.org
> BUG=v8:5267
> 
> Review-Url: https://codereview.chromium.org/2836913004
> Cr-Commit-Position: refs/heads/master@{#44828}
> Committed:
https://chromium.googlesource.com/v8/v8/+/ed573cee5c1d1e42158829dc0b92fb69723...

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5267,chromium:715936

Review-Url: https://codereview.chromium.org/2852623002
Cr-Commit-Position: refs/heads/master@{#44958}
Committed:
https://chromium.googlesource.com/v8/v8/+/53d31d0623bd88ce9a0041a767f36eafd3f...
==========

[commit-bot: I haz the power, 2017-04-28 05:40:53]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/53d31d0623bd88ce9a0041a767f36eafd3f...