[turbofan] More efficient code generation for unsigned modulus.

[turbofan] More efficient code generation for unsigned modulus.

If we know statically that x and y are both in Unsigned32 or NaN or -0,
and we have SignedSmall or Signed32 feedback for x % y, then we can take
the feedback on the inputs and lower to Uint32Mod.

Drive-by-fix: Refactor this logic into a separate method.

R=jarin@chromium.org
BUG=v8:5267
Committed: https://crrev.com/24ef71d96b6e7f9c94af8bbc288624f9f06a34e5
Cr-Commit-Position: refs/heads/master@{#38975}

[Benedikt Meurer, 2016-08-29 10:49:07]

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

[commit-bot: I haz the power, 2016-08-29 10:49:13]

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

[Benedikt Meurer, 2016-08-29 10:49:37]

Hey Jaro,

Here's the change to the SpeculativeNumberModulus reduction rule.
Please take a look.

Thanks,
Benedikt

[Jarin, 2016-08-29 11:02:15]

lgtm

[commit-bot: I haz the power, 2016-08-29 11:15:12]

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

[commit-bot: I haz the power, 2016-08-29 11:15:13]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2016-08-29 11:20:11]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-08-29 11:20:22]

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, 2016-08-29 11:22:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-29 11:22:47]

Description was changed from

==========
[turbofan] More efficient code generation for unsigned modulus.

If we know statically that x and y are both in Unsigned32 or NaN or -0,
and we have SignedSmall or Signed32 feedback for x % y, then we can take
the feedback on the inputs and lower to Uint32Mod.

Drive-by-fix: Refactor this logic into a separate method.

R=jarin@chromium.org
BUG=v8:5267
==========

to

==========
[turbofan] More efficient code generation for unsigned modulus.

If we know statically that x and y are both in Unsigned32 or NaN or -0,
and we have SignedSmall or Signed32 feedback for x % y, then we can take
the feedback on the inputs and lower to Uint32Mod.

Drive-by-fix: Refactor this logic into a separate method.

R=jarin@chromium.org
BUG=v8:5267

Committed: https://crrev.com/24ef71d96b6e7f9c94af8bbc288624f9f06a34e5
Cr-Commit-Position: refs/heads/master@{#38975}
==========

[commit-bot: I haz the power, 2016-08-29 11:22:47]

Patchset 1 (id:??) landed as
https://crrev.com/24ef71d96b6e7f9c94af8bbc288624f9f06a34e5
Cr-Commit-Position: refs/heads/master@{#38975}