PPC: [Atomics] Make Atomics.exchange a builtin using TF

PPC: [Atomics] Make Atomics.exchange a builtin using TF

Implemented l[w|h|b]arx and st[w|h|b]cx instructions which are
needed to perform atomic exchange. Also added synchronization
primitives similar to arm to simulate those instructions.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, binji@chromium.org, aseemgarg@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2754263004
Cr-Commit-Position: refs/heads/master@{#44257}
Committed: https://chromium.googlesource.com/v8/v8/+/f1ad374480ac9e75239ee076b3b757fa3e066641

[JaideepBajwa, 2017-03-17 23:48:20]

ptal

[john.yan, 2017-03-20 17:36:08]

lgtm

[aseemgarg, 2017-03-20 20:37:33]

lgtm

[aseemgarg, 2017-03-20 20:37:58]

Description was changed from

==========
PPC: [Atomics] Make Atomics.exchange a builtin using TF

Implemented l[w|h|b]arx and st[w|h|b]cx instructions which are
needed to perform atomic exchange. Also added synchronization
primitives similar to arm to simulate those instructions.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, binji@chromium.org,
aseemgarg@chromium.org
BUG=
==========

to

==========
PPC: [Atomics] Make Atomics.exchange a builtin using TF

Implemented l[w|h|b]arx and st[w|h|b]cx instructions which are
needed to perform atomic exchange. Also added synchronization
primitives similar to arm to simulate those instructions.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, binji@chromium.org,
aseemgarg@chromium.org
BUG=
==========

[aseemgarg, 2017-03-20 20:37:58]

aseemgarg@chromium.org changed reviewers:
+ jarin@chromium.org

[aseemgarg, 2017-03-20 20:38:16]

+Jaroslav

[JaideepBajwa, 2017-03-23 13:01:34]

The CQ bit was checked by bjaideep@ca.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-23 13:01:40]

Dry run: 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, 2017-03-23 13:30:51]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-23 13:30:52]

Dry run: This issue passed the CQ dry run.

[JaideepBajwa, 2017-03-30 01:00:10]

ping

[JaideepBajwa, 2017-03-30 01:00:16]

The CQ bit was checked by bjaideep@ca.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-30 01:00:19]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[binji, 2017-03-30 01:15:25]

lgtm

[commit-bot: I haz the power, 2017-03-30 01:28:38]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-30 01:28:39]

Dry run: This issue passed the CQ dry run.

[JaideepBajwa, 2017-03-30 03:03:50]

The CQ bit was checked by bjaideep@ca.ibm.com

[JaideepBajwa, 2017-03-30 03:03:51]

The patchset sent to the CQ was uploaded after l-g-t-m from jyan@ca.ibm.com,
aseemgarg@chromium.org
Link to the patchset: https://codereview.chromium.org/2754263004/#ps60001
(title: "rebased")

[commit-bot: I haz the power, 2017-03-30 03:04:02]

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

[JaideepBajwa, 2017-03-30 03:04:13]

On 2017/03/30 01:15:25, binji wrote:
> lgtm

thank you.

[commit-bot: I haz the power, 2017-03-30 03:05:18]

CQ is committing da patch.

Bot data: {"patchset_id": 60001, "attempt_start_ts": 1490843030978130,
"parent_rev": "872accf9df751534053a60c0572802e1a5e10402", "commit_rev":
"f1ad374480ac9e75239ee076b3b757fa3e066641"}

[commit-bot: I haz the power, 2017-03-30 03:05:23]

Description was changed from

==========
PPC: [Atomics] Make Atomics.exchange a builtin using TF

Implemented l[w|h|b]arx and st[w|h|b]cx instructions which are
needed to perform atomic exchange. Also added synchronization
primitives similar to arm to simulate those instructions.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, binji@chromium.org,
aseemgarg@chromium.org
BUG=
==========

to

==========
PPC: [Atomics] Make Atomics.exchange a builtin using TF

Implemented l[w|h|b]arx and st[w|h|b]cx instructions which are
needed to perform atomic exchange. Also added synchronization
primitives similar to arm to simulate those instructions.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, binji@chromium.org,
aseemgarg@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2754263004
Cr-Commit-Position: refs/heads/master@{#44257}
Committed:
https://chromium.googlesource.com/v8/v8/+/f1ad374480ac9e75239ee076b3b757fa3e0...
==========

[commit-bot: I haz the power, 2017-03-30 03:05:24]

Committed patchset #4 (id:60001) as
https://chromium.googlesource.com/v8/v8/+/f1ad374480ac9e75239ee076b3b757fa3e0...