[turbofan] More efficient truncation analysis for add, sub.

[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.

Committed: https://crrev.com/398d131abac42e478780d9c23cf29caa1852fa0e
Cr-Commit-Position: refs/heads/master@{#37102}

[Jarin, 2016-06-20 11:39:44]

Description was changed from

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation if the inputs can be minus zero
as long as the result is not minus zero.
==========

to

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.
==========

[Jarin, 2016-06-20 11:42:50]

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

[Jarin, 2016-06-20 11:42:51]

Could you take a look, please?

[Benedikt Meurer, 2016-06-20 11:56:23]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2016-06-20 11:56:24]

lgtm

[commit-bot: I haz the power, 2016-06-20 11:56:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2078423002/20001

[commit-bot: I haz the power, 2016-06-20 12:21:05]

Description was changed from

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.
==========

to

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.
==========

[commit-bot: I haz the power, 2016-06-20 12:21:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-20 12:22:48]

Description was changed from

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.
==========

to

==========
[turbofan] More efficient truncation analysis for add, sub.

We now spread the word32 truncation even if the inputs can be minus zero
as long as the result is not minus zero.

Committed: https://crrev.com/398d131abac42e478780d9c23cf29caa1852fa0e
Cr-Commit-Position: refs/heads/master@{#37102}
==========

[commit-bot: I haz the power, 2016-06-20 12:22:49]

Patchset 2 (id:??) landed as
https://crrev.com/398d131abac42e478780d9c23cf29caa1852fa0e
Cr-Commit-Position: refs/heads/master@{#37102}