In ES2015, the "byteLength" and "byteOffset" properties of DataViews are
getters on the prototype, so the previously-used strategy of special-casing
them using only the receiver map is invalid.

A future CL will need to use the same strategy which will be taken for
TypedArray "length", "byteLength", and "byteOffset": adding a prototype
chain check.

BUG=v8:5018, chromium:593634

Review-Url: https://codereview.chromium.org/1984043002
Cr-Commit-Position: refs/heads/master@{#36382}

Revert of Refactor script position calculation (patchset #6 id:100001 of https://codereview.chromium.org/1986173002/ )

Reason for revert:
Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/6896

Original issue's description:
> Refactor script position calculation
>
> Script position calculation logic (i.e. line & column numbers for a
> given code position) is now based on a single method
> Script::GetPositionInfo(). Refactored related code in isolate.cc and
> js/messages.js to use the new method and removed the line_ends JS
> accessor.
>
> R=yangguo@chromium.org
> BUG=
>
> Committed: https://crrev.com/c04d547298ce4fd425ef1eaa9b02ad1e177918dc
> Cr-Commit-Position: refs/heads/master@{#36359}

TBR=yangguo@chromium.org,jgruber@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/1994973002
Cr-Commit-Position: refs/heads/master@{#36368}

Script position calculation logic (i.e. line & column numbers for a
given code position) is now based on a single method
Script::GetPositionInfo(). Refactored related code in isolate.cc and
js/messages.js to use the new method and removed the line_ends JS
accessor.

R=yangguo@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1986173002
Cr-Commit-Position: refs/heads/master@{#36359}

The feature was deprecated in M49 and flagged off in M50.
This patch removes it entirely from the codebase.

Review URL: https://codereview.chromium.org/1909433003

Cr-Commit-Position: refs/heads/master@{#35714}

BUG=

Review URL: https://codereview.chromium.org/1871503002

Cr-Commit-Position: refs/heads/master@{#35335}

There are a bunch of places in our builtins where we use %_Arguments and
%_ArgumentsLength for no good reason, as arguments object and/or rest
parameter is as good and performant in these cases. Now the only uses
of %_Arguments and %_ArgumentsLength left are in string.js, which
requires dedicated investigation.

CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_dbg
R=yangguo@chromium.org

Committed: https://crrev.com/2160429fd458e3c095475e718c97f77ac90d906f
Cr-Commit-Position: refs/heads/master@{#33834}

Review URL: https://codereview.chromium.org/1678953004

Cr-Commit-Position: refs/heads/master@{#33881}

BUG=chromium:580584
LOG=y

Review URL: https://codereview.chromium.org/1632603002

Cr-Commit-Position: refs/heads/master@{#33551}

The old mechanism was a left-over from a previous time where the runtime
would rely on the presence or absence of the setter to figure out
whether or not the property is mutable. This is unnecessary by now.

Review URL: https://codereview.chromium.org/1600923002

Cr-Commit-Position: refs/heads/master@{#33377}

Review URL: https://codereview.chromium.org/1600353003

Cr-Commit-Position: refs/heads/master@{#33364}

This enables linter checking for "readability/namespace" violations
during presubmit and instead marks the few known exceptions that we
allow explicitly.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1371083003

Cr-Commit-Position: refs/heads/master@{#31019}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1290453002

Cr-Commit-Position: refs/heads/master@{#30110}

This is the first step of turning the v8.h file into a normal header
instead of an include-the-world header. The new rule is that no other
header files are allowed to include v8.h, which is enforced by DEPS.

Also the number of includes inside the v8.h file has been drastically
reduced. Basically the last missing piece is the inclusion of the big
objects-inl.h file.

This in turn makes many headers follow the IWYU principle.

R=bmeurer@chromium.org,hpayer@chromium.org,titzer@chromium.org

Review URL: https://codereview.chromium.org/1282503003

Cr-Commit-Position: refs/heads/master@{#30102}

BUG=

Review URL: https://codereview.chromium.org/1195823002

Cr-Commit-Position: refs/heads/master@{#29154}

Original description:
> Instead, views have to check their array buffer for whether
> it's neutered or not.
>
> BUG=v8:3996
> R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
> LOG=n

BUG=v8:3996
R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1107843002

Cr-Commit-Position: refs/heads/master@{#28060}

Revert of Reland "Remove the weak list of views from array buffers" (patchset #2 id:20001 of https://codereview.chromium.org/1093183004/)

Reason for revert:
still working on perf

Original issue's description:
> Reland "Remove the weak list of views from array buffers"
>
> Original description:
> > Instead, views have to check their array buffer for whether
> > it's neutered or not.
> >
> > BUG=v8:3996
> > R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
> > LOG=n
>
> BUG=v8:3996
> R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
> LOG=n
>
> Committed: https://crrev.com/655b04637e9da2749f53c866bca8f5f6abb05a3f
> Cr-Commit-Position: refs/heads/master@{#28029}

TBR=dslomov@chromium.org,hpayer@chromium.org,verwaest@chromium.org,dcarney@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3996

Review URL: https://codereview.chromium.org/1053203007

Cr-Commit-Position: refs/heads/master@{#28038}

Original description:
> Instead, views have to check their array buffer for whether
> it's neutered or not.
>
> BUG=v8:3996
> R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
> LOG=n

BUG=v8:3996
R=hpayer@chromium.org,dslomov@chromium.org,verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1093183004

Cr-Commit-Position: refs/heads/master@{#28029}

Escaping used to happen lazily, implemented in an accessor property.
However, native implementation of RegExp methods use .source as well.
This leads to performance regressions. Now we do it eagerly instead.

R=jkummerow@chromium.org
BUG=chromium:436447
LOG=N

Review URL: https://codereview.chromium.org/1070093002

Cr-Commit-Position: refs/heads/master@{#27705}

BUG=

Review URL: https://codereview.chromium.org/935603002

Cr-Commit-Position: refs/heads/master@{#26696}

In DevTools we need one more flag for script origin - is debugger script. We already have "is shared origin" flag. The new flag added by analogy with the old but new has accessor in script object.

R=yurys@chromium.org

Review URL: https://codereview.chromium.org/879553002

Cr-Commit-Position: refs/heads/master@{#26324}

R=ulan@chromium.org
BUG=v8:3229
LOG=N

Review URL: https://codereview.chromium.org/736003002

Cr-Commit-Position: refs/heads/master@{#25457}

R=ishell@chromium.org
BUG=chromium:417709
LOG=N

Review URL: https://codereview.chromium.org/653593002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24608 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Bonus: fix bitrot in (disabled) Hydrogen-BCH

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/623513002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24392 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=arv@chromium.org, verwaest@chromium.org, rossberg@chromium.org
BUG=v8:3391
LOG=N
TEST=mjsunit/harmony/arguments-iterator.js

Review URL: https://codereview.chromium.org/342453002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Add new "Name" type to API that is a supertype of Symbol and String.

Object::SetDeclaredAccessor, Object::SetAccessorProperty, Template::Set,
Template::SetAccessorProperty, and Template::SetDeclaredAccessor now
take a Name as the property name instead of a String.

Add Object::SetAccessor, Template::SetNativeDataProperty, and
ObjectTemplate::SetAccessor overloads that can define accessors for
symbol-named properties.

R=dcarney@chromium.org, rossberg@chromium.org
BUG=v8:3394
TEST=cctest/test-api/TestSymbolProperties
LOG=Y

Review URL: https://codereview.chromium.org/459413002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Mostly mechanical, the only interesting change is in KeyedLoadIC::Load, where we now handle x[symbol] in the same way we handle x['string']

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/461603002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23038 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2948
LOG=N
R=svenpanne@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/316173002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22137 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- this avoids using relative include paths which are forbidden by the style guide
- makes the code more readable since it's clear which header is meant
- allows for starting to use checkdeps

BUG=none
R=jkummerow@chromium.org, danno@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/304153016

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21625 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ExecutableAccessorInfo turns the property into a field. Better
to keep it as a callback, and correctly deal with the changed
property attributes.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/262053011

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21558 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

> BUG=none
> R=mstarzinger@chromium.org
> LOG=n
>
> Review URL: https://codereview.chromium.org/293363006

BUG=none
TBR=mstarzinger@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/295373003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21490 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Because of tree redness.

TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/306443002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21483 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=mstarzinger@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/293363006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21482 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/258243003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21041 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/259183002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/259773009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21023 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/256803010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21021 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/256693007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21014 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/254783003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@21002 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=mjsunit/function-length-accessor
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/257423009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20937 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/246693005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20926 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/245963007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20914 ce2b1a6d-e550-0410-aec6-3dcde31c8c00