[Atomics] Remove Atomics code stubs; use TF ops

[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org

Committed: https://crrev.com/d412cfa26c18a6ef1f6c0e274ee51f3d834eab74
Cr-Commit-Position: refs/heads/master@{#35596}

[binji, 2016-04-18 19:36:58]

Description was changed from

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
R=bmeurer@chromium.org
==========

to

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org,machenbach@chromium.org
==========

[binji, 2016-04-18 19:37:07]

Description was changed from

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org,machenbach@chromium.org
==========

to

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org
==========

[binji, 2016-04-18 19:38:11]

The CQ bit was checked by binji@chromium.org

[commit-bot: I haz the power, 2016-04-18 19:38:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1902433003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1902433003/20001

[commit-bot: I haz the power, 2016-04-18 19:41:16]

Description was changed from

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org
==========

to

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org
==========

[commit-bot: I haz the power, 2016-04-18 19:41:17]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-18 19:43:37]

Description was changed from

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org
==========

to

==========
[Atomics] Remove Atomics code stubs; use TF ops

Reland of (https://codereview.chromium.org/1891033002)

This is a much cleaner solution, which won't require nearly as much
architecture-specific code. Thanks bmeurer@!

BUG=v8:4614
LOG=y
TBR=bmeurer@chromium.org

Committed: https://crrev.com/d412cfa26c18a6ef1f6c0e274ee51f3d834eab74
Cr-Commit-Position: refs/heads/master@{#35596}
==========

[commit-bot: I haz the power, 2016-04-18 19:43:38]

Patchset 2 (id:??) landed as
https://crrev.com/d412cfa26c18a6ef1f6c0e274ee51f3d834eab74
Cr-Commit-Position: refs/heads/master@{#35596}