[turbofan] Add frame state before JavaScript comparisons.

[turbofan] Add frame state before JavaScript comparisons.

Use these check points to optimize comparisons where we already know
that one side cannot be a String (or turn into a string via
ToPrimitive).

Also remove bunch of useless DoNotCrash tests for the scheduler that are
painful to maintain and add almost no value.

R=jarin@chromium.org

Committed: https://crrev.com/2111d18dbad8ce14124d69488aa3568dd4604768
Cr-Commit-Position: refs/heads/master@{#28383}

[Benedikt Meurer, 2015-05-13 07:02:11]

Hey Jaro,

This is the CL we're working on this morning. Thanks for helping. Please take a
look.

-- Benedikt

[Jarin, 2015-05-13 07:11:07]

lgtm with a nit.

https://codereview.chromium.org/1140583004/diff/1/src/compiler/js-typed-lower...
File src/compiler/js-typed-lowering.cc (right):

https://codereview.chromium.org/1140583004/diff/1/src/compiler/js-typed-lower...
src/compiler/js-typed-lowering.cc:480: #endif
Delete the ifdef-ed block, please.

[Benedikt Meurer, 2015-05-13 07:15:10]

https://codereview.chromium.org/1140583004/diff/1/src/compiler/js-typed-lower...
File src/compiler/js-typed-lowering.cc (right):

https://codereview.chromium.org/1140583004/diff/1/src/compiler/js-typed-lower...
src/compiler/js-typed-lowering.cc:480: #endif
On 2015/05/13 07:11:07, jarin wrote:
> Delete the ifdef-ed block, please.

Done.

[Benedikt Meurer, 2015-05-13 07:17:21]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-05-13 07:17:21]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/1140583004/#ps40001
(title: "Remove obsolete #if 0. Slightly refactor strong mode check.")

[commit-bot: I haz the power, 2015-05-13 07:17:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1140583004/40001

[commit-bot: I haz the power, 2015-05-13 07:38:48]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-13 07:38:57]

Patchset 3 (id:??) landed as
https://crrev.com/2111d18dbad8ce14124d69488aa3568dd4604768
Cr-Commit-Position: refs/heads/master@{#28383}