[turbofan] Strength reduction for Int32MulWithOverflow.

[turbofan] Strength reduction for Int32MulWithOverflow.

Add simple strength reduction for Int32MulWithOverflow to the
MachineOperatorReducer.

R=mvstanton@chromium.org

Committed: https://crrev.com/d9cb130d0b2f8c45db1871edd905e95f53484cd2
Cr-Commit-Position: refs/heads/master@{#37751}

[Benedikt Meurer, 2016-07-12 18:29:08]

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

[commit-bot: I haz the power, 2016-07-12 18:29:16]

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

[Benedikt Meurer, 2016-07-12 18:29:43]

Hey Michael,

Here's a simple addendum to your Int32MulWithOverflow work.
Please take a look.

Thanks,
Benedikt

[commit-bot: I haz the power, 2016-07-12 18:35:30]

The CQ bit was unchecked by commit-bot@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-12 18:35:31]

Dry run: Try jobs failed on following builders:
  v8_linux_mipsel_compile_rel on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mipsel_compile_rel...)

[mvstanton, 2016-07-13 10:43:50]

LGTM, once first patchset is gelandet.

[Benedikt Meurer, 2016-07-14 09:02:55]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-07-14 09:03:07]

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, 2016-07-14 09:23:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-14 09:23:54]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-14 09:25:41]

Description was changed from

==========
[turbofan] Strength reduction for Int32MulWithOverflow.

Add simple strength reduction for Int32MulWithOverflow to the
MachineOperatorReducer.

R=mvstanton@chromium.org
==========

to

==========
[turbofan] Strength reduction for Int32MulWithOverflow.

Add simple strength reduction for Int32MulWithOverflow to the
MachineOperatorReducer.

R=mvstanton@chromium.org

Committed: https://crrev.com/d9cb130d0b2f8c45db1871edd905e95f53484cd2
Cr-Commit-Position: refs/heads/master@{#37751}
==========

[commit-bot: I haz the power, 2016-07-14 09:25:42]

Patchset 1 (id:??) landed as
https://crrev.com/d9cb130d0b2f8c45db1871edd905e95f53484cd2
Cr-Commit-Position: refs/heads/master@{#37751}