Revert of [compiler] Drop the CompareNilIC.

Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
>
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
>
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
>
> R=danno@chromium.org
>
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true

Committed: https://crrev.com/fca68bac47897a11a8cd8d741f2153d4116578a1
Cr-Commit-Position: refs/heads/master@{#34308}

[adamk, 2016-02-25 23:08:24]

Created Revert of [compiler] Drop the CompareNilIC.

[adamk, 2016-02-25 23:08:51]

Description was changed from

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
==========

[adamk, 2016-02-25 23:09:00]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2016-02-25 23:09:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1743433002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1743433002/1

[Michael Hablich, 2016-02-26 00:13:16]

Description was changed from

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
==========

to

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true
==========

[Michael Hablich, 2016-02-26 00:13:48]

On 2016/02/25 23:09:03, commit-bot: I haz the power wrote:
> CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1743433002/1
> View timeline at
>  https://chromium-cq-status.appspot.com/patch-timeline/1743433002/1

setting notry=true because v8_linux_chromium_gn_rel   seems to be stuck.

[Michael Hablich, 2016-02-26 00:14:01]

The CQ bit was unchecked by hablich@chromium.org

[Michael Hablich, 2016-02-26 00:14:12]

The CQ bit was checked by hablich@chromium.org

[commit-bot: I haz the power, 2016-02-26 00:14:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1743433002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1743433002/1

[commit-bot: I haz the power, 2016-02-26 00:16:36]

Description was changed from

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true
==========

to

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true
==========

[commit-bot: I haz the power, 2016-02-26 00:16:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-26 00:17:03]

Description was changed from

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
> 
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
> 
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
> 
> R=danno@chromium.org
> 
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true
==========

to

==========
Revert of [compiler] Drop the CompareNilIC. (patchset #4 id:60001 of
https://codereview.chromium.org/1722193002/ )

Reason for revert:
Speculative revert in attempt to fix #2 crasher on canary.

Original issue's description:
> [compiler] Drop the CompareNilIC.
>
> Since both null and undefined are also marked as undetectable now, we
> can just test that bit instead of having the CompareNilIC try to collect
> feedback to speed up the general case (without the undetectable bit
> being used).
>
> Drive-by-fix: Update the type system to match the new handling of
> undetectable in the runtime.
>
> R=danno@chromium.org
>
> Committed: https://crrev.com/666aec0348c8793e61c8633dee7ad29a514239ba
> Cr-Commit-Position: refs/heads/master@{#34237}

TBR=danno@chromium.org,verwaest@chromium.org,bmeurer@chromium.org
LOG=y
BUG=chromium:589897
NOTRY=true

Committed: https://crrev.com/fca68bac47897a11a8cd8d741f2153d4116578a1
Cr-Commit-Position: refs/heads/master@{#34308}
==========

[commit-bot: I haz the power, 2016-02-26 00:17:04]

Patchset 1 (id:??) landed as
https://crrev.com/fca68bac47897a11a8cd8d741f2153d4116578a1
Cr-Commit-Position: refs/heads/master@{#34308}