Update to ES2015 == semantics for Symbol/SIMD wrappers

Update to ES2015 == semantics for Symbol/SIMD wrappers

When == is invoked on a Symbol or SIMD vector and an object, the object should
be converted to a primitive with ToPrimitive and then compared again. This means,
for example, that for a Symbol or SIMD vector s, s == Object(s). This patch makes
that change in the implementation of ==. Only the runtime function needed to be
changed, as the code stubs and compiler specializations don't operate on Symbols
or SIMD vectors, and on these types, a fallback to the runtime function is always
used.

BUG=v8:3593
LOG=Y
R=adamk

Committed: https://crrev.com/b436635ac4f81f0248eefea4bc83e7cb0f5c3e21
Cr-Commit-Position: refs/heads/master@{#31614}

[Dan Ehrenberg, 2015-10-27 04:17:00]

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

[commit-bot: I haz the power, 2015-10-27 04:17:14]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/1

[commit-bot: I haz the power, 2015-10-27 04:19:32]

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

[commit-bot: I haz the power, 2015-10-27 04:19:33]

Dry run: Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/7100)

[Dan Ehrenberg, 2015-10-27 05:22:33]

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

[commit-bot: I haz the power, 2015-10-27 05:22:36]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/20001

[commit-bot: I haz the power, 2015-10-27 05:31:56]

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

[commit-bot: I haz the power, 2015-10-27 05:31:56]

Dry run: Try jobs failed on following builders:
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)

[Dan Ehrenberg, 2015-10-27 16:47:47]

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

[commit-bot: I haz the power, 2015-10-27 16:47:54]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/40001

[commit-bot: I haz the power, 2015-10-27 17:01:45]

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

[commit-bot: I haz the power, 2015-10-27 17:01:46]

Dry run: Try jobs failed on following builders:
  v8_linux64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel/builds/11178)

[Dan Ehrenberg, 2015-10-27 17:02:13]

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

[commit-bot: I haz the power, 2015-10-27 17:02:24]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/60001

[commit-bot: I haz the power, 2015-10-27 17:31:30]

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

[commit-bot: I haz the power, 2015-10-27 17:31:31]

Dry run: This issue passed the CQ dry run.

[Dan Ehrenberg, 2015-10-27 18:19:17]

Description was changed from

==========
Fix equality

There must be some more places to fix, but this is the first one.

BUG=v8:3593
LOG=Y
R=adamk
==========

to

==========
Update to ES2015 == semantics for Symbol/SIMD wrappers

When == is invoked on a Symbol or SIMD vector and an object, the object should
be converted to a primitive with ToPrimitive and then compared again. This
means,
for example, that for a Symbol or SIMD vector s, s == Object(s). This patch
makes
that change in the implementation of ==. Only the runtime function needed to be
changed, as the code stubs and compiler specializations don't operate on Symbols
or SIMD vectors, and on these types, a fallback to the runtime function is
always
used.

BUG=v8:3593
LOG=Y
R=adamk
==========

[Dan Ehrenberg, 2015-10-27 18:19:38]

PTAL; I think this patch should be sufficient (see commit message for
explanation).

[Dan Ehrenberg, 2015-10-27 18:47:46]

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

[commit-bot: I haz the power, 2015-10-27 18:47:50]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/80001

[commit-bot: I haz the power, 2015-10-27 19:05:34]

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

[commit-bot: I haz the power, 2015-10-27 19:05:35]

Dry run: This issue passed the CQ dry run.

[Dan Ehrenberg, 2015-10-27 19:42:50]

Fixed the ordering to be cleaner. PTAL

[adamk, 2015-10-27 20:13:51]

lgtm

[Dan Ehrenberg, 2015-10-27 20:18:47]

The CQ bit was checked by littledan@chromium.org

[commit-bot: I haz the power, 2015-10-27 20:18:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1421413002/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1421413002/80001

[commit-bot: I haz the power, 2015-10-27 20:20:13]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2015-10-27 20:20:35]

Patchset 5 (id:??) landed as
https://crrev.com/b436635ac4f81f0248eefea4bc83e7cb0f5c3e21
Cr-Commit-Position: refs/heads/master@{#31614}