port r24927.

original commit message:

 Use shared function info for eval cache key.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/689543002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

Cr-Commit-Position: refs/heads/master@{#24961}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24961 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=jkumerrow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/683363002

Cr-Commit-Position: refs/heads/master@{#24960}
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R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/684893002

Cr-Commit-Position: refs/heads/master@{#24959}
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TBR=ishell@chromium.org
BUG=

Review URL: https://codereview.chromium.org/669663003

Cr-Commit-Position: refs/heads/master@{#24958}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24958 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This analysis computes the set of variables that are assigned in each loop. This is useful to avoid creating redundant loop phis when building an SSA graph, which just waste memory and require analysis to get rid of.

This CL implements an AST walk for the analysis and plugs the result into the TurboFan graph builder. I left this analysis under a flag for A/B testing and until sufficient unit tests can be developed.

R=danno@chromium.org, mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/656123005

Cr-Commit-Position: refs/heads/master@{#24957}
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Port r24942 (c5055ce)

Original commit message:
Also add backend flags that tell whether integer division/modulus is
generally safe, i.e. does not trap on overflow or divide by zero.

TEST=unittests
BUG=
R=dusan.milosavljevic@imgtec.com

Review URL: https://codereview.chromium.org/679393003

Cr-Commit-Position: refs/heads/master@{#24956}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24956 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

That broke webkit_unit_tests on ARM64.

BUG=chromium:427746
LOG=Y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/683113003

Cr-Commit-Position: refs/heads/master@{#24955}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24955 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org, loislo@chromium.org
LOG=N
BUG=Non

Review URL: https://codereview.chromium.org/681333003

Cr-Commit-Position: refs/heads/master@{#24954}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24954 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This caused some performance regressions on Octane.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/663333005

Cr-Commit-Position: refs/heads/master@{#24953}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24953 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

A FeedbackNexus is the combination of a feedback vector, a slot(s) in
the vector, along with methods to query and manipulate that information
in a type-correct way.

A CallIC will have a CallICNexus, a LoadIC a LoadICNexus, etc.,
reflecting the fact that different types of ICs configure their data
in unique ways.

This CL limits itself to introducing and using the nexus type only for
CallICs. A follow-up will use them for Load and KeyedLoadICs for the
case when the --vector-ics flag is turned on.

The notion of a Nexus is also embedded at the lowest level of the IC
class. This makes sense because more ICs should become vector-based
in the future.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/683933002

Cr-Commit-Position: refs/heads/master@{#24952}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24952 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r24934 (279833c)

Original commit message:
This adds the properties to the prototype and the constructor.

BUG=v8:3330
LOG=Y
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/687633002

Cr-Commit-Position: refs/heads/master@{#24951}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24951 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r24927 (244472a)

BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/681303002

Cr-Commit-Position: refs/heads/master@{#24950}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24950 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rodolph.perfetta@arm.com, ulan@chromium.org

Review URL: https://codereview.chromium.org/678313002

Cr-Commit-Position: refs/heads/master@{#24949}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24949 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 63fd24a7c0782ccc3221803e3a2740f1e1b92ceb. Broke compilation on Mac.

TBR=loislo@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/684883002

Cr-Commit-Position: refs/heads/master@{#24948}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24948 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r24945.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/683883002

Cr-Commit-Position: refs/heads/master@{#24947}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24947 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

LOG=N
BUG=None
R=loislo@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/680343002

Cr-Commit-Position: refs/heads/master@{#24946}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24946 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

A FeedbackNexus is the combination of a feedback vector, a slot(s) in
the vector, along with methods to query and manipulate that information
in a type-correct way.

A CallIC will have a CallICNexus, a LoadIC a LoadICNexus, etc.,
reflecting the fact that different types of ICs configure their data
in unique ways.

This CL limits itself to introducing and using the nexus type only for
CallICs. A follow-up will use them for Load and KeyedLoadICs for the
case when the --vector-ics flag is turned on.

The notion of a Nexus is also embedded at the lowest level of the IC
class. This makes sense because more ICs should become vector-based
in the future.

This CL is based on https://codereview.chromium.org/679073002/ which
should land first.

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/680883004

Cr-Commit-Position: refs/heads/master@{#24945}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24945 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/687653002

Cr-Commit-Position: refs/heads/master@{#24944}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24944 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=3655
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/687453004

Cr-Commit-Position: refs/heads/master@{#24943}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24943 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also add backend flags that tell whether integer division/modulus is
generally safe, i.e. does not trap on overflow or divide by zero.

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/681133004

Cr-Commit-Position: refs/heads/master@{#24942}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24942 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/674913002

Cr-Commit-Position: refs/heads/master@{#24941}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24941 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Use 'git new-branch' for creating new branches.

BUG=410721
LOG=n
TEST=script_test.py
R=tandrii@chromium.org

Review URL: https://codereview.chromium.org/680173003

Cr-Commit-Position: refs/heads/master@{#24940}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Methods should not have a prototype property

BUG=v8:3330
LOG=y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/678103004

Cr-Commit-Position: refs/heads/master@{#24939}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24939 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We can convert simple stack trace of an Error object to the detailed stack that
is used for debugging. Do so when available, and only then fall back to
reporting stack trace at throw site.

R=yangguo@chromium.org, Yang
LOG=Y

Review URL: https://codereview.chromium.org/674423002

Cr-Commit-Position: refs/heads/master@{#24938}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24938 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org, svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/683023002

Cr-Commit-Position: refs/heads/master@{#24937}
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R=titzer@chromium.org

Review URL: https://codereview.chromium.org/687553002

Cr-Commit-Position: refs/heads/master@{#24936}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24936 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/685723002

Cr-Commit-Position: refs/heads/master@{#24935}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24935 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This adds the properties to the prototype and the constructor.

BUG=v8:3330
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/680993003

Cr-Commit-Position: refs/heads/master@{#24934}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24934 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ES6 no longer makes duplicate properties an error. However, we
continue to treat duplicate properties in strict mode object
literals as errors. With this change we allow duplicate properties
in class bodies. We continue to flag duplicate constructors as an
error as required by ES6.

BUG=v8:3570
LOG=Y
R=marja@chromium.org

Review URL: https://codereview.chromium.org/677953004

Cr-Commit-Position: refs/heads/master@{#24933}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24933 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/682793005

Cr-Commit-Position: refs/heads/master@{#24932}
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TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/685713002

Cr-Commit-Position: refs/heads/master@{#24931}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24931 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org, jarin@chromium.org
TEST=cctest/test-scheduler/LoopedFloatingDiamond

Review URL: https://codereview.chromium.org/682983003

Cr-Commit-Position: refs/heads/master@{#24930}
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R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/678843004

Cr-Commit-Position: refs/heads/master@{#24927}
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TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/678323002

Cr-Commit-Position: refs/heads/master@{#24926}
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R=ulan@chromium.org
BUG=chromium:409614
LOG=N

Review URL: https://codereview.chromium.org/684573005

Cr-Commit-Position: refs/heads/master@{#24924}
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R=jarin@chromium.org

Review URL: https://codereview.chromium.org/655833005

Cr-Commit-Position: refs/heads/master@{#24923}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24923 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The localtime_s function produces incorrect results for russian time zone.

BUG=chromium:417640
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/654843012

Cr-Commit-Position: refs/heads/master@{#24922}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24922 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=marja@chromium.org, svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/652193006

Cr-Commit-Position: refs/heads/master@{#24921}
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BUG=
TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/683033002

Cr-Commit-Position: refs/heads/master@{#24920}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24920 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- JSToBoolean(x:string) => BooleanNot(NumberEqual(x.length, #0))
- JSToBoolean(phi(x1,...,xn):primitive) => phi(JSToBoolean(x1),...,JSToBoolean(xn))

TEST=cctest,mjsunit/asm/do-while,mjsunit/boolean,unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/681223002

Cr-Commit-Position: refs/heads/master@{#24919}
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