[turbofan] fix deopt's input life span

[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158
Committed: https://crrev.com/e916dad343e0d0790edc529a3745b6f96f131799
Cr-Commit-Position: refs/heads/master@{#38875}

[Rodolph Perfetta, 2016-08-19 11:50:42]

rodolph.perfetta@gmail.com changed reviewers:
+ bmeurer@chromium.org, jarin@chromium.org, rodolph.perfetta@gmail.com

[Rodolph Perfetta, 2016-08-19 11:50:43]

Hi,

Sorry for the delay, but here is the proposed change to address issue 5158
(Int32SubWithOverflow is wrong with deopts).

[Rodolph Perfetta, 2016-08-19 11:52:00]

On 2016/08/19 11:50:43, Rodolph Perfetta wrote:
> Hi,
> 
> Sorry for the delay, but here is the proposed change to address issue 5158
> (Int32SubWithOverflow is wrong with deopts).

I should have added I didn't notice any performance impact, but it should allow
for better register allocation on non Intel architecture.

[Benedikt Meurer, 2016-08-24 19:21:35]

Description was changed from

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=
==========

to

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158
==========

[Benedikt Meurer, 2016-08-24 19:22:37]

LGTM, thanks.

[Benedikt Meurer, 2016-08-24 19:22:41]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-08-24 19:22:48]

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, 2016-08-24 19:45:06]

Description was changed from

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158
==========

to

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158
==========

[commit-bot: I haz the power, 2016-08-24 19:45:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-24 19:45:24]

Description was changed from

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158
==========

to

==========
[turbofan] fix deopt's input life span

Mark deopt's input alive till the end of the deopt instruction so
they cannot be reused as output.

BUG=v8:5158

Committed: https://crrev.com/e916dad343e0d0790edc529a3745b6f96f131799
Cr-Commit-Position: refs/heads/master@{#38875}
==========

[commit-bot: I haz the power, 2016-08-24 19:45:26]

Patchset 1 (id:??) landed as
https://crrev.com/e916dad343e0d0790edc529a3745b6f96f131799
Cr-Commit-Position: refs/heads/master@{#38875}