[ignition] Slightly improve code for Call/Construct bytecodes.

[ignition] Slightly improve code for Call/Construct bytecodes.

The Construct bytecode is always passed a valid feedback slot (just like
the Call bytecode), so no need to check for invalid feedback slot anymore.
Also perform the call count increment initially for both bytecodes instead
of delaying it, which decreases live range for the feedback vector and slot
registers.

R=mythria@chromium.org, rmcilroy@chromium.org
BUG=v8:4280
Review-Url: https://codereview.chromium.org/2955063002
Cr-Commit-Position: refs/heads/master@{#46232}
Committed: https://chromium.googlesource.com/v8/v8/+/bd185e9998fb3db40fb3e90823669bb94682cd17

[Benedikt Meurer, 2017-06-27 05:08:56]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-06-27 05:09:01]

Dry run: CQ is trying da patch.

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

[Benedikt Meurer, 2017-06-27 05:09:35]

Tiny cleanup/refactoring. Please take a look.

[commit-bot: I haz the power, 2017-06-27 05:35:05]

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

[commit-bot: I haz the power, 2017-06-27 05:35:06]

Dry run: This issue passed the CQ dry run.

[mythria, 2017-06-27 07:56:21]

lgtm.

Thanks,
Mythri

[Benedikt Meurer, 2017-06-27 08:17:48]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-06-27 08:17:52]

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, 2017-06-27 08:19:14]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498551468535420, "parent_rev":
"4ea4e7294e242583a7ec31b9a7e4f0101512e3b3", "commit_rev":
"bd185e9998fb3db40fb3e90823669bb94682cd17"}

[commit-bot: I haz the power, 2017-06-27 08:19:23]

Description was changed from

==========
[ignition] Slightly improve code for Call/Construct bytecodes.

The Construct bytecode is always passed a valid feedback slot (just like
the Call bytecode), so no need to check for invalid feedback slot anymore.
Also perform the call count increment initially for both bytecodes instead
of delaying it, which decreases live range for the feedback vector and slot
registers.

R=mythria@chromium.org, rmcilroy@chromium.org
BUG=v8:4280
==========

to

==========
[ignition] Slightly improve code for Call/Construct bytecodes.

The Construct bytecode is always passed a valid feedback slot (just like
the Call bytecode), so no need to check for invalid feedback slot anymore.
Also perform the call count increment initially for both bytecodes instead
of delaying it, which decreases live range for the feedback vector and slot
registers.

R=mythria@chromium.org, rmcilroy@chromium.org
BUG=v8:4280

Review-Url: https://codereview.chromium.org/2955063002
Cr-Commit-Position: refs/heads/master@{#46232}
Committed:
https://chromium.googlesource.com/v8/v8/+/bd185e9998fb3db40fb3e90823669bb9468...
==========

[commit-bot: I haz the power, 2017-06-27 08:19:25]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/bd185e9998fb3db40fb3e90823669bb9468...