[turbofan] Run DeadCodeElimination together with the advanced reducers.

This will immediately remove dead code from the graph once any of
the advanced reducers inserts it. Also changes the GraphReducer to
use the canonical Dead node for ReplaceWithValue.

R=jarin@chromium.org

Committed: https://crrev.com/88a40c5fb381924b1c0b2403dc582bceb2abe5da
Cr-Commit-Position: refs/heads/master@{#29217}

Review URL: https://codereview.chromium.org/1206533002.

Cr-Commit-Position: refs/heads/master@{#29225}

Global handle leak in Realm.create() fixed.

BUG=chromium:501808
LOG=N

Review URL: https://codereview.chromium.org/1197403002

Cr-Commit-Position: refs/heads/master@{#29224}

[turbofan] Make an OptionalOperator for MachineOperatorBuilder.

This makes usage of the MachineOperatorBuilder more robust, as it will be
an error to request an unsupported operator.

Along the way, I noticed that all 7 platforms support Float32Abs and
Float64Abs. Should make them non-optional in another CL?

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1128133003

Cr-Commit-Position: refs/heads/master@{#29223}

Move SetFastElementsCapacity into GrowCapacityAndConvert

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1197133003

Cr-Commit-Position: refs/heads/master@{#29222}

[test] Teach test runner about whether novfp3 is on or off

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

Review URL: https://codereview.chromium.org/1204643003

Cr-Commit-Position: refs/heads/master@{#29221}

Revert of [turbofan] Run DeadCodeElimination together with the advanced reducers. (patchset #1 id:1 of https://codereview.chromium.org/1206533002/)

Reason for revert:
Looks like this breaks Tests262.

Original issue's description:
> [turbofan] Run DeadCodeElimination together with the advanced reducers.
>
> This will immediately remove dead code from the graph once any of
> the advanced reducers inserts it. Also changes the GraphReducer to
> use the canonical Dead node for ReplaceWithValue.
>
> R=jarin@chromium.org
>
> Committed: https://crrev.com/88a40c5fb381924b1c0b2403dc582bceb2abe5da
> Cr-Commit-Position: refs/heads/master@{#29217}

TBR=jarin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1200983004

Cr-Commit-Position: refs/heads/master@{#29220}

Vector ICs: Additional Turbofan support

Lowering of stores need the vector and slot if --vector-stores is true.

BUG=

Review URL: https://codereview.chromium.org/1193313002

Cr-Commit-Position: refs/heads/master@{#29219}

Fix wrong DCHECK in Heap::FindAllocationMemento where bump pointer overflow points to the currently used new space page.

BUG=chromium:501693
LOG=n

Review URL: https://codereview.chromium.org/1200833003

Cr-Commit-Position: refs/heads/master@{#29218}

[turbofan] Run DeadCodeElimination together with the advanced reducers.

This will immediately remove dead code from the graph once any of
the advanced reducers inserts it. Also changes the GraphReducer to
use the canonical Dead node for ReplaceWithValue.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1206533002

Cr-Commit-Position: refs/heads/master@{#29217}

[turbofan] Avoid embedding type feedback vector into code.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1198263004

Cr-Commit-Position: refs/heads/master@{#29216}

Also check for access checks and indexed interceptors before allowing fast moving of elements

BUG=

Review URL: https://codereview.chromium.org/1200053002

Cr-Commit-Position: refs/heads/master@{#29215}

[turbofan] Factor out the function specific part from the frame state operator.

This also threads through the parameter count and local count to the instruction selector. This will be later used to allow merging of various StateValues vector (and prepare for differential encoding which will not distinguish between parameters, locals and expression stack).

BUG=

Review URL: https://codereview.chromium.org/1191243003

Cr-Commit-Position: refs/heads/master@{#29214}

X87: Built-in apply() performance benefits from an uninitialized IC.

port 2a3b05758721a2f63a7c611ef22e364ead9ed0f3 (r29175).

original commit message:

   Built-in apply() performance benefits from an uninitialized IC.

BUG=

Review URL: https://codereview.chromium.org/1199913007

Cr-Commit-Position: refs/heads/master@{#29213}

X87: Vector ICs: Turbofan vector store ic support

port 17c8ffeaa3e4e1769f0b4d0e7c8a6fb26b5297bd (r29173)

original commit message:

    Vector ICs: Turbofan vector store ic support

    Turbofan needs to pass vector slots around for named and keyed stores.
    Also, the CL addresses a missing slot for ClassLiterals.

BUG=

Review URL: https://codereview.chromium.org/1195793007

Cr-Commit-Position: refs/heads/master@{#29212}

[date] Use explicit control flow to replace %_ThrowIfNotADate.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1191283003

Cr-Commit-Position: refs/heads/master@{#29211}

Update V8 DEPS.

Rolling v8/third_party/android_tools to 21f4bcbd6cd927e4b4227cfde7d5f13486be1236

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1203633004

Cr-Commit-Position: refs/heads/master@{#29210}

Re-ship Harmony Array/TypedArray methods

Turning the --harmony-array flag on has been delayed behind
unrelated test failures. Now that those tests are disabled,
land the changes.

This patch fixes WebKit tests based on the new change.

R=adamk
LOG=Y
BUG=v8:3578
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1199113003

Cr-Commit-Position: refs/heads/master@{#29209}

Remove usage of S.p.charCodeAt from uri.js

We were using both String.prototype.charCodeAt and
String.prototype.charAt.

BUG=v8:4224
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1204483003

Cr-Commit-Position: refs/heads/master@{#29208}

Disable a flaky test

This test starts failing when the --harmony-array flag is turned on,
but the failure does not directly have to do with that flag. Disabling
the test in debug mode to unblock the release.

BUG=v8:4237
LOG=n
R=adamk,erikcorry

Review URL: https://codereview.chromium.org/1202523005

Cr-Commit-Position: refs/heads/master@{#29207}

Fix HTML string methods to not depend on replace method

Before this we were using String.prototype.replace. Now
we call the internal StringReplace instead.

BUG=v8:4221
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1199933005

Cr-Commit-Position: refs/heads/master@{#29206}

Add an informative comment on regress-1132 ASAN suppression

TBR=arv@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1199053002.

Cr-Commit-Position: refs/heads/master@{#29205}

Remove duplicate isolate

BUG=

Review URL: https://codereview.chromium.org/1196533004

Cr-Commit-Position: refs/heads/master@{#29204}

Use CHECK_LT in CheckHandleCountVisitor for better error message

Review URL: https://codereview.chromium.org/1201773005

Cr-Commit-Position: refs/heads/master@{#29203}

Fix string HTML methods to call ToString

Before this we were using + which calls valueOf which is not correct
for these methods.

BUG=v8:4222
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1194173004

Cr-Commit-Position: refs/heads/master@{#29202}

Disable regress-1132 on ASAN runs

This test appears to trigger some bug in either ASAN or V8 when
accompanied by an increase in JS code size. Disabling the test
on ASAN runs to unblock adding new JS code.

BUG=v8:4236
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/1203523002

Cr-Commit-Position: refs/heads/master@{#29201}

[Test262-es6] Update to use FAIL_SLOPPY everywhere

Also reordered related test

BUG=N
LOG=N
R=adamk, littledan

Review URL: https://codereview.chromium.org/1199013002

Cr-Commit-Position: refs/heads/master@{#29200}

Atomic operations on Uint8ClampedArray

BUG=chromium:497295
R=jarin@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1201543002

Cr-Commit-Position: refs/heads/master@{#29199}

PPC: Vector ICs: Turbofan vector store ic support

Port 17c8ffeaa3e4e1769f0b4d0e7c8a6fb26b5297bd

Original commit message:
Turbofan needs to pass vector slots around for named and keyed stores.
Also, the CL addresses a missing slot for ClassLiterals.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1201983005

Cr-Commit-Position: refs/heads/master@{#29198}

PPC: Clean up JSConstructStub

Port 882055ff6a58f6b585575229f40f364e5f2a3ad0

Original commit message:
- fix truthfulness of comments
- use InitializeFieldsWithFiller more consistently
- use unsigned comparisons for pointers

No change in functionality intended.

Bonus: improve JavaScriptFrame::Print() for an enhanced debugging experience:

- print PC of each frame
- print the function's source also for optimized frames

R=dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1193363004

Cr-Commit-Position: refs/heads/master@{#29197}

PPC: Built-in apply() performance benefits from an uninitialized IC.

Port 2a3b05758721a2f63a7c611ef22e364ead9ed0f3

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1196253003

Cr-Commit-Position: refs/heads/master@{#29196}

Add d8 API for spawning function on a new thread (Third try)

This API closely matches the Worker API. The differences:

1) The argument to the Worker constructor is a function to run, not a script.
2) Receiving a message from a worker is a synchronous API (as there is no event
loop).

The serialization done here is not robust as the real DOM implementation. For
example, recursive data structures or otherwise duplicated objects are not
allowed.

BUG=chromium:497295
LOG=n

Review URL: https://codereview.chromium.org/1192923002

Cr-Commit-Position: refs/heads/master@{#29195}

Test262-es6 test runner should handle sloppy fail better

This adds a new FAIL_SLOPPY expected output. It then uses this to
determine if the test case has unexpected output.

BUG=v8:4164
LOG=N
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1197913002

Cr-Commit-Position: refs/heads/master@{#29194}

[es6] Bound function names

https://people.mozilla.org/~jorendorff/es6-draft.html#sec-function.prototype.bind

Bound functions should have a name based on the function that was
bound.

This reverts the revert f2747ed9b48d0e62c7a30da69825ff926aeedbd2. The original
CL was reverted because the Blink layout test broke. I have a CL that disables
these tests at: https://codereview.chromium.org/1196753003/

BUG=N
LOG=N
R=adamk
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1195983002

Cr-Commit-Position: refs/heads/master@{#29193}

[destructuring] Implement parameter pattern matching.

Scoping for initializers is yet incorrect. Defaults are not supported.

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:811
LOG=N

Committed: https://crrev.com/42f30f4ded2b1ca0c4caa7639e6206e93c78ee70
Cr-Commit-Position: refs/heads/master@{#29184}

Review URL: https://codereview.chromium.org/1189743003

Cr-Commit-Position: refs/heads/master@{#29192}

[es6] ship Rest Parameters

BUG=v8:2159
LOG=N
R=arv@chromium.org, dslomov@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1191653008

Cr-Commit-Position: refs/heads/master@{#29191}

Keep track of ArrayBuffers based on collector type, not space

Since Mark/Compact also collects garbage in the new space, we can't just
free old space ArrayBuffers during MC - otherwise we run the risk of
never freeing new array buffers

BUG=v8:4201
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1199913002

Cr-Commit-Position: refs/heads/master@{#29190}

[android] Merge gyp configurations.

The merge makes it possible to reuse variables from the
android configuration in standalone.gypi.

BUG=chromium:502176
LOG=n

Review URL: https://codereview.chromium.org/1196253002

Cr-Commit-Position: refs/heads/master@{#29189}

Revert of [destructuring] Implement parameter pattern matching. (patchset #7 id:120001 of https://codereview.chromium.org/1189743003/)

Reason for revert:
[Sheriff] Breaks tsan:
http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/4392

Original issue's description:
> [destructuring] Implement parameter pattern matching.
>
> Scoping for initializers is yet incorrect. Defaults are not supported.
>
> R=arv@chromium.org,rossberg@chromium.org
> BUG=v8:811
> LOG=N
>
> Committed: https://crrev.com/42f30f4ded2b1ca0c4caa7639e6206e93c78ee70
> Cr-Commit-Position: refs/heads/master@{#29184}

TBR=arv@chromium.org,rossberg@chromium.org,caitpotter88@gmail.com,wingo@igalia.com,dslomov@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:811

Review URL: https://codereview.chromium.org/1195163007

Cr-Commit-Position: refs/heads/master@{#29188}

[turbofan] Add CodeFactory::Instanceof helper.

R=mvstanton@chromium.org
TEST=cctest/test-run-jsops/BinopInstanceOf

Review URL: https://codereview.chromium.org/1196213004

Cr-Commit-Position: refs/heads/master@{#29187}

Use optparse in js2c.py for python compatibility

Without this change, V8 won't build on RHEL/CentOS 6 because the distro
python is too old to know about the argparse module.

Can this commit be cherry-picked to the 4.4 branch?  It should apply
cleanly.

BUG=

Review URL: https://codereview.chromium.org/1192973004

Cr-Commit-Position: refs/heads/master@{#29186}

[turbofan] Revive the VectorSlotPair and also put feedback on JSCallFunction.

We resurrect the VectorSlotPair in order to be able to separate the
feedback input for the compiler from the actual type feedback vector
that is required to meet the IC requirements at runtime. This will allow
us to for example use feedback from a different context or divide the
type feedback vector into two separate vectors, without having to touch
the compiler. It'll allow use to load the vector from the shared
function info at runtime, while still consuming feedback in the
compiler (i.e. we don't rely on the feedback vector node to be a heap
constant).

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1198983002

Cr-Commit-Position: refs/heads/master@{#29185}

[destructuring] Implement parameter pattern matching.

Scoping for initializers is yet incorrect. Defaults are not supported.

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:811
LOG=N

Review URL: https://codereview.chromium.org/1189743003

Cr-Commit-Position: refs/heads/master@{#29184}

[android] Add toolchain path logic to gyp config.

BUG=chromium:502176
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/1197703004

Cr-Commit-Position: refs/heads/master@{#29183}

Move SetFastDoubleElementsCapacity into GrowCapacityAndConvert

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1193343002

Cr-Commit-Position: refs/heads/master@{#29182}

Remove broken optimization unwrapping number wrappers on setting array.length
Can't imagine it's very useful; lets restore/fix once it becomes relevant

BUG=

Review URL: https://codereview.chromium.org/1198253002

Cr-Commit-Position: refs/heads/master@{#29181}

Get rid of JSArray::Expand and friends

BUG=

Review URL: https://codereview.chromium.org/1194943004

Cr-Commit-Position: refs/heads/master@{#29180}

Do not look for existing shared function info when compiling a new script.

LOG=N
BUG=chromium:502908

Review URL: https://codereview.chromium.org/1196223002

Cr-Commit-Position: refs/heads/master@{#29179}

[turbofan] Some cleanup to the Typer.

This change does the following:

  a.) Remove unused fields from the Typer.
  b.) Move some interesting unions to types.h.
  c.) Reduce Typer constructor overhead.
  d.) Avoid heap allocation in the Typer.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1199903002

Cr-Commit-Position: refs/heads/master@{#29178}

Fix terrible interaction with code flushing.

This fixes a terrible interaction of code flushing and the clearing of
optimized code maps hanging off a SharedFunctionInfo. The following is
what happened:
1) Incremental marking cleared map in SharedFunctionInfo s, however it
   was not enqueued as a flushing candidate because one JSFunction f1
   still had optimized code.
2) Deoptimization of f1 made s eligible for code flushing.
3) Optimization of f2 added new entry to optimized code map of s.
4) The JSFunction f2 became unreachable and hence is never marked.
5) Incremental marking now visits f1, finds it eligible for flushing,
   also s is eligible for flushing, both are enqueued.
6) Marking finishes, code flusher clears f1 and s, but the optimized
   code map of s still contains an entry.
7) Boom!

R=ulan@chromium.org,hpayer@chromium.org
TEST=mjsunit/es6/generators-iteration
BUG=v8:3803
LOG=N

Review URL: https://codereview.chromium.org/1197713004

Cr-Commit-Position: refs/heads/master@{#29177}

[turbofan] Run context specialization, inlining and initial DCE in one pass.

This is another missing piece in the puzzle towards general inlining.
The fact that we can combine this with context specialization is a nice
bonus, and not necessarily a requirement.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1198193002.

Cr-Commit-Position: refs/heads/master@{#29176}

Built-in apply() performance benefits from an uninitialized IC.

BUG=

Review URL: https://codereview.chromium.org/1180713007

Cr-Commit-Position: refs/heads/master@{#29175}

[turbofan] Run DeadCodeElimination as part of the generic lowering phase.

This way we don't need the separate late control reduction pass over the
graph, plus we can also reduce dead code recognized by generic lowering.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1198923002

Cr-Commit-Position: refs/heads/master@{#29174}

Vector ICs: Turbofan vector store ic support

Turbofan needs to pass vector slots around for named and keyed stores.
Also, the CL addresses a missing slot for ClassLiterals.

BUG=

Review URL: https://codereview.chromium.org/1178363002

Cr-Commit-Position: refs/heads/master@{#29173}

Update V8 DEPS.

Rolling v8/buildtools to ecc8e253abac3b6186a97573871a084f4c0ca3ae

Rolling v8/tools/clang to 73ec8804ed395b0886d6edf82a9f33583f4a7902

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1195673003

Cr-Commit-Position: refs/heads/master@{#29172}

Revert of Ship Harmony Array/TypedArray methods (patchset #6 id:100001 of https://codereview.chromium.org/1187543003/)

Reason for revert:
[Sheriff] Breaks gcstress and mac asan:
http://build.chromium.org/p/client.v8/builders/V8%20GC%20Stress%20-%203/builds/3896
http://build.chromium.org/p/client.v8/builders/V8%20Mac64%20ASAN/builds/1774

Original issue's description:
> Ship Harmony Array/TypedArray methods
>
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
> BUG=v8:3578
> LOG=Y
> R=adamk
>
> Committed: https://crrev.com/7142b0d211b732e1c119fded80f43fbbd9cea0f8
> Cr-Commit-Position: refs/heads/master@{#29170}

TBR=adamk@chromium.org,littledan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3578

Review URL: https://codereview.chromium.org/1195163002

Cr-Commit-Position: refs/heads/master@{#29171}

Ship Harmony Array/TypedArray methods

CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=v8:3578
LOG=Y
R=adamk

Review URL: https://codereview.chromium.org/1187543003

Cr-Commit-Position: refs/heads/master@{#29170}

[es6] throw TypeError when setting cyclic prototype value

Object.setPrototypeOf() throws a TypeError if value would create a
cycle. Previously a plain Error was thrown rather than a TypeError.

BUG=v8:4197
R=mike@bocoup.com
LOG=N

Review URL: https://codereview.chromium.org/1198523002

Cr-Commit-Position: refs/heads/master@{#29169}

[es6] Ship spread

This enables both --harmony-spreadcalls and --harmony-spread-arrays

BUG=v8:3018
LOG=N
R=caitpotter88@gmail.com, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1177223005

Cr-Commit-Position: refs/heads/master@{#29168}

Ship arrow functions

R=rossberg@chromium.org
LOG=Y
BUG=v8:2700

Review URL: https://codereview.chromium.org/1194873002

Cr-Commit-Position: refs/heads/master@{#29167}

Revert relanded strong property access CL

Reason:
Regressions in various benchmarks.

Revert "Revert of Revert of [strong] Implement strong mode restrictions on property access (patchset #1 id:1 of https://codereview.chromium.org/1189153002/)"

This reverts commit 41405c0470d5b30ec5d22665ed9430c46b33624f.

Revert "X87: Revert of Revert of [strong] Implement strong mode restrictions on property access."

This reverts commit 48de5f4d6b356d8da9db4afa68814df28e4b575d.

Revert "Fix overlapping KeyedLoadIC bitfield."

This reverts commit 4e6c956abfbfcd8ae193e6bb279cf96997b14e20.

Revert "MIPS64: Fix 'Revert of Revert of [strong] Implement strong mode restrictions on property access'."

This reverts commit 74f97b0d2a4a5102c2817c95139e94ebae900377.

BUG=

Review URL: https://codereview.chromium.org/1199493002

Cr-Commit-Position: refs/heads/master@{#29166}

Inline SetLengthWithoutNormalize into its callers

BUG=

Review URL: https://codereview.chromium.org/1194943002

Cr-Commit-Position: refs/heads/master@{#29165}

Test262 update 2015-06-11 (Take 3)

This reverts commit 72bb369d08e8d141f77c0c05f95cf8ed7ac5a9ec.

Always skip slow tests.

Also, some eval tests are failing in strict mode with nosnap

BUG=N
LOG=N
R=adamk@chromium.org, littledan@chromium.org, machenbach@chromium.org

Review URL: https://codereview.chromium.org/1190063002

Cr-Commit-Position: refs/heads/master@{#29164}

MIPS: Added data tracing to simulator

Added memory and register data tracing to mips32 simulator

Review URL: https://codereview.chromium.org/1195783002

Cr-Commit-Position: refs/heads/master@{#29163}

Remove deprecated SharedFunctionInfo::dont_cache predicate.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1187563011

Cr-Commit-Position: refs/heads/master@{#29162}

Revert of Add d8 API for spawning function on a new thread (Second try) (patchset #3 id:60001 of https://codereview.chromium.org/1195613003/)

Reason for revert:
Fails on V8 Linux - isolates (http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20isolates/builds/4128)

Original issue's description:
> Add d8 API for spawning function on a new thread (Second try)
>
> This API closely matches the Worker API. The differences:
>
> 1) The argument to the Worker constructor is a function to run, not a script.
> 2) Receiving a message from a worker is a synchronous API (as there is no event
> loop).
>
> The serialization done here is not robust as the real DOM implementation. For
> example, recursive data structures or otherwise duplicated objects are not
> allowed.
>
> BUG=chromium:497295
> R=jochen@chromium.org
> LOG=n
>
> Review URL: https://codereview.chromium.org/1185643004
>
> Cr-Commit-Position: refs/heads/master@{#29126}
>
> Committed: https://crrev.com/ec2eaf712ecee6b4891c0458f2397e04a1f9b339
> Cr-Commit-Position: refs/heads/master@{#29158}

TBR=jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:497295

Review URL: https://codereview.chromium.org/1191373005

Cr-Commit-Position: refs/heads/master@{#29161}

Revert of Additional HandleScopes to limit Handle consumption. (patchset #4 id:50001 of https://codereview.chromium.org/1185633002/)

Reason for revert:
Fails the following test

handle-count-ast
handle-count-runtime-...

on V8 Linux - nosnap - debug - 1

http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug%20-%201/builds/851/steps/Check/logs/stdio

Original issue's description:
> Additional HandleScopes to limit Handle consumption.
>
> erikcorry@chromium.org suggested digging into v8 handle usage. Found potential scopes in ast.cc and runtime-literals.cc and added tests.
>
> The runtime-literals.cc change reduces peak handles in imaging-darkroom.js from 1,282,610 to 428,218. The ast.cc change reduces the peak handles in string-tagcloud.js from 80,738 to 8,176.
>
> No significant handle count issues found with major websites, but substantial savings on some benchmarks and demos:
>
> Kraken's imaging-darkroom.js down from 1,282,610 to 428,218 due to runtime-literals.cc scope.
> SunSpider's string-tagcloud.js down from 80,738 to 8.176 due to ast.cc
>
> http://www.flohofwoe.net/demos/dragons_asmjs.html (738,906 -> 478,296)
> http://www.flohofwoe.net/demos/instancing_asmjs.html (737,884 -> 477,274)
> https://dl.dropboxusercontent.com/u/16662598/Ports/DOSBox-web/doom.html?engine=dosbox-growth.js (1,724,114 -> 1,087,408)
> https://kripken.github.io/ammo.js/examples/new/ammo.html (175,784 -> 142,058)
>
> BUG=
>
> Committed: https://crrev.com/3a4c7538839186aa38910c66c986abb563f4ccd2
> Cr-Commit-Position: refs/heads/master@{#29155}

TBR=yangguo@chromium.org,erikcorry@chromium.org,oth@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1194873004

Cr-Commit-Position: refs/heads/master@{#29160}

Fix cluster-fuzz bug introduced in refs/heads/master@{#28796}

Don't DCHECK in the atomic runtime functions.

BUG=chromium:501809,chromium:497295
R=jarin@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1189223003

Cr-Commit-Position: refs/heads/master@{#29159}

Add d8 API for spawning function on a new thread (Second try)

This API closely matches the Worker API. The differences:

1) The argument to the Worker constructor is a function to run, not a script.
2) Receiving a message from a worker is a synchronous API (as there is no event
loop).

The serialization done here is not robust as the real DOM implementation. For
example, recursive data structures or otherwise duplicated objects are not
allowed.

BUG=chromium:497295
R=jochen@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1185643004

Cr-Commit-Position: refs/heads/master@{#29126}

Review URL: https://codereview.chromium.org/1195613003

Cr-Commit-Position: refs/heads/master@{#29158}

MIPS64: Fix random failures of fannkuch.js.

TEST=mjsunit/asm/embenchen/fannkuch,
     mjsunit/math-abs
BUG=

Review URL: https://codereview.chromium.org/1192413002

Cr-Commit-Position: refs/heads/master@{#29157}

MIPS64: Fix 'Revert of Revert of [strong] Implement strong mode restrictions on property access'.

Port 41405c0470d5b30ec5d22665ed9430c46b33624f

TEST=mjsunit/strong/load-property-mutate-backing-store, mjsunit/call-stub
BUG=

Review URL: https://codereview.chromium.org/1191333003

Cr-Commit-Position: refs/heads/master@{#29156}

Additional HandleScopes to limit Handle consumption.

erikcorry@chromium.org suggested digging into v8 handle usage. Found potential scopes in ast.cc and runtime-literals.cc and added tests.

The runtime-literals.cc change reduces peak handles in imaging-darkroom.js from 1,282,610 to 428,218. The ast.cc change reduces the peak handles in string-tagcloud.js from 80,738 to 8,176.

No significant handle count issues found with major websites, but substantial savings on some benchmarks and demos:

Kraken's imaging-darkroom.js down from 1,282,610 to 428,218 due to runtime-literals.cc scope.
SunSpider's string-tagcloud.js down from 80,738 to 8.176 due to ast.cc

http://www.flohofwoe.net/demos/dragons_asmjs.html (738,906 -> 478,296)
http://www.flohofwoe.net/demos/instancing_asmjs.html (737,884 -> 477,274)
https://dl.dropboxusercontent.com/u/16662598/Ports/DOSBox-web/doom.html?engine=dosbox-growth.js (1,724,114 -> 1,087,408)
https://kripken.github.io/ammo.js/examples/new/ammo.html (175,784 -> 142,058)

BUG=

Review URL: https://codereview.chromium.org/1185633002

Cr-Commit-Position: refs/heads/master@{#29155}

Add fast path for setting array.length

BUG=

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

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

Better error reporting for "return();"

R=rossberg@chromium.org
BUG=v8:4194
LOG=N

Review URL: https://codereview.chromium.org/1191303002

Cr-Commit-Position: refs/heads/master@{#29153}

More cleanup related to setting array.length

BUG=

Review URL: https://codereview.chromium.org/1191313003

Cr-Commit-Position: refs/heads/master@{#29152}

Keep a canonical list of shared function infos.

Each Script object now keeps a WeakFixedArray of SharedFunctionInfo
objects created from this script.

This way, when compiling a function, we do not create duplicate shared
function info objects when recompiling with either compiler.

This fixes a class of issues in the debugger, where we set break points
on one shared function info, but functions from duplicate shared function
infos are not affected.

LOG=N
BUG=v8:4132

Review URL: https://codereview.chromium.org/1183733006

Cr-Commit-Position: refs/heads/master@{#29151}

[es6] ship Object.assign

BUG=v8:4007
LOG=N
R=rossberg@chromium.org, arv@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Committed: https://crrev.com/12e194860a56d47a10d89ae34761a4af6b6166bb
Cr-Commit-Position: refs/heads/master@{#29118}

Review URL: https://codereview.chromium.org/1191003003

Cr-Commit-Position: refs/heads/master@{#29150}

[turbofan] Preserve Bounds when cloning nodes in the scheduler.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1196613003

Cr-Commit-Position: refs/heads/master@{#29149}

Fix overlapping KeyedLoadIC bitfield.

BUG=
LOG=N

Review URL: https://codereview.chromium.org/1192383003

Cr-Commit-Position: refs/heads/master@{#29148}

[ubsan] Fix HeapObjectMatcher to avoid invalid casts.

BUG=v8:3809
LOG=n
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1196623002

Cr-Commit-Position: refs/heads/master@{#29147}

[turbofan] Proper dead code elimination as regular reducer.

The three different concerns that the ControlReducer used to deal with
are now properly separated into

  a.) DeadCodeElimination, which is a regular AdvancedReducer, that
      propagates Dead via control edges,
  b.) CommonOperatorReducer, which does strength reduction on common
      operators (i.e. Branch, Phi, and friends), and
  c.) GraphTrimming, which removes dead->live edges from the graph.

This will make it possible to run the DeadCodeElimination together with
other passes that actually introduce Dead nodes, i.e. typed lowering;
and it opens the door for general inlining without two stage fix point
iteration.

To make the DeadCodeElimination easier and more uniform, we basically
reverted the introduction of DeadValue and DeadEffect, and changed the
Dead operator to produce control, value and effect. Note however that
this is not a requirement, but merely a way to make dead propagation
easier and more uniform. We could always go back and decide to have
different Dead operators if some other change requires that.

Note that there are several additional opportunities for cleanup now,
i.e. OSR deconstruction could be a regular reducer now, and we don't
need to use TheHole as dead value marker in the GraphReducer. And we can
actually run the dead code elimination together with the other passes
instead of using separate passes over the graph.  We will do this in
follow up CLs.

R=jarin@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1193833002

Cr-Commit-Position: refs/heads/master@{#29146}

[turbofan] Disable failing DeoptExceptionHandlerFinally test.

R=jarin@chromium.org
TEST=cctest/test-run-deopt/DeoptExceptionHandlerFinally
BUG=v8:4195
LOG=N

Review URL: https://codereview.chromium.org/1189373003

Cr-Commit-Position: refs/heads/master@{#29145}

Split setting array length from handling new Array(non-number)

BUG=

Review URL: https://codereview.chromium.org/1193673002

Cr-Commit-Position: refs/heads/master@{#29144}

MIPS: Implemented PC-relative instructions for R6.

Added: JIC, BEQZC, JIALC, LDPC, LWPC, ALUIPC, ADDIUPC, ALIGN/DAILGN, LWUPC,
AUIPC, BC, BALC. Additional fixed compact branch offset.

TEST=test-assembler-mips[64]/r6_align, r6_dalign, r6_aluipc, r6_lwpc, r6_jic,
                             r6_beqzc, r6_jialc, r6_addiupc, r6_ldpc, r6_lwupc,
                             r6_auipc, r6_bc, r6_balc
BUG=

Review URL: https://codereview.chromium.org/1195793002

Cr-Commit-Position: refs/heads/master@{#29143}

Don't roundtrip to JS to update the length. This is 1) faster (although we don't care) and 2) avoids stackchecks that otherwise make the .Assert fail on stack overflow.

BUG=chromium:502147
LOG=n

Review URL: https://codereview.chromium.org/1189423002

Cr-Commit-Position: refs/heads/master@{#29142}

[tools] Add gc-nvp-to-csv.py script.

Adds a script for converting gc nvp output into csv files. Factors out common
code in gc-nvp-trace-processor.py to gc_nvp_common.py to be shared by both
scripts. Fixes a couple of issues in nvp parsing code.

Review URL: https://codereview.chromium.org/1175113008

Cr-Commit-Position: refs/heads/master@{#29141}

Revert of [release-tools] Fix possible race condition in retrieval of latest rolled version (patchset #2 id:20001 of https://codereview.chromium.org/1186393007/)

Reason for revert:
Build slave fetches git repo from cache not from real repo.

Original issue's description:
> [release-tools] Fix possible race condition in retrieval of latest rolled version
>
> R=machenbach@chromium.org
> BUG=
> NOTRY=true
>
> Committed: https://crrev.com/5d2a85b2450f9f88a94949052c5b055c1304b9b8
> Cr-Commit-Position: refs/heads/master@{#29137}

TBR=machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1195693003

Cr-Commit-Position: refs/heads/master@{#29140}

Remove handles from ElementsAccessor::Set and friends

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1196543003

Cr-Commit-Position: refs/heads/master@{#29139}

[android] Bump up toolchain version.

BUG=chromium:502176
LOG=n

Review URL: https://codereview.chromium.org/1193843002

Cr-Commit-Position: refs/heads/master@{#29138}

[release-tools] Fix possible race condition in retrieval of latest rolled version

R=machenbach@chromium.org
BUG=
NOTRY=true

Review URL: https://codereview.chromium.org/1186393007

Cr-Commit-Position: refs/heads/master@{#29137}

Serializer: do not miss outdated contexts if they are serialized deferred.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1189183002

Cr-Commit-Position: refs/heads/master@{#29136}

Protect error message formatter against invalid string length.

R=mstarzinger@chromium.org
BUG=chromium:500980
LOG=N

Review URL: https://codereview.chromium.org/1191263002

Cr-Commit-Position: refs/heads/master@{#29135}

Serialzier: expand string table as last step before deserializing.

Not doing so could result in this scenario:
- We ensure that the string table is large enough. It is.
- We compile code stubs, which triggers a GC.
- The GC clears string table entries.
- This increases the number of deleted entries in the table.
- When the deserializer hooks up internalized strings into the
  table, we ensure that the table is large enough every time.
- Due to changed number of deleted entries, the heuristic
  decides to expand the string table.
- Allocation during deserialization causes assertion to fail.

BUG=chromium:502085
LOG=N

Review URL: https://codereview.chromium.org/1197633002

Cr-Commit-Position: refs/heads/master@{#29134}

X87: Revert of Revert of [strong] Implement strong mode restrictions on property access.

port 41405c0470d5b30ec5d22665ed9430c46b33624f (r29122).

   fix spelling error in r29122.

BUG=

Review URL: https://codereview.chromium.org/1197593002

Cr-Commit-Position: refs/heads/master@{#29133}

ARM: make predictable code size scope more precise in DoDeferredInstanceOfKnownGlobal.

We block constant pool up to the call stub instruction, but the check for code size
includes the next instruction after the call instruction. That instruction can
emit constant pool.

BUG=chromium:500831
LOG=NO
TEST=mjsunit/regress/regress-500831

Review URL: https://codereview.chromium.org/1189123003

Cr-Commit-Position: refs/heads/master@{#29132}

Update V8 DEPS.

Rolling v8/build/gyp to 5122240c5e5c4d8da12c543d82b03d6089eb77c5

Rolling v8/third_party/icu to 00af1a4e512477e48ba3d5efc97adbc95462685e

Rolling v8/tools/clang to d2b4eddd701ff0265124147bcb0a65f32273f06b

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1192743002

Cr-Commit-Position: refs/heads/master@{#29131}

Revert of Add d8 API for spawning function on a new thread. (patchset #6 id:100001 of https://codereview.chromium.org/1185643004/)

Reason for revert:
Fails on V8 Win32 - nosnap - shared (http://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20nosnap%20-%20shared/builds/7427)

Fails on V8 Arm - debug builder (http://build.chromium.org/p/client.v8/builders/V8%20Arm%20-%20debug%20builder/builds/4361)

Fails on V8 Linux - shared (http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20shared/builds/4430)

Original issue's description:
> Add d8 API for spawning function on a new thread.
>
> This API closely matches the Worker API. The differences:
>
> 1) The argument to the Worker constructor is a function to run, not a script.
> 2) Receiving a message from a worker is a synchronous API (as there is no event
> loop).
>
> The serialization done here is not robust as the real DOM implementation. For
> example, recursive data structures or otherwise duplicated objects are not
> allowed.
>
> BUG=none
> R=jochen@chromium.org
> LOG=n
>
> Committed: https://crrev.com/3d98b956b56fa283b40913788ff760022d478812
> Cr-Commit-Position: refs/heads/master@{#29126}

TBR=jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/1192193002

Cr-Commit-Position: refs/heads/master@{#29130}

Cleanup typed array setters, the property is guaranteed to be there.

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1180753005

Cr-Commit-Position: refs/heads/master@{#29129}

MIPS: Fix unaligned double access in cctest/test-simplified-lowering/RunAccessTests_float64.

TEST=cctest/test-simplified-lowering/RunAccessTests_float64
BUG=

Review URL: https://codereview.chromium.org/1182713004

Cr-Commit-Position: refs/heads/master@{#29128}

[es6] fix IsConcatSpreadable() algorithm in runtime-array.cc

The ordering of the "IsArray()" check for IsConcatSpreadable() was incorrect previously --- IsArray() is only used if Get(O, @@isConcatSpreadable) is undefined. Without this fix, it's not possible for Array subclasses to opt out of spreading

22.1.3.1.1 http://www.ecma-international.org/ecma-262/6.0/#sec-isconcatspreadable

BUG=v8:3764
LOG=N
R=arv@chromium.org, dslomov@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1192153002

Cr-Commit-Position: refs/heads/master@{#29127}

Add d8 API for spawning function on a new thread.

This API closely matches the Worker API. The differences:

1) The argument to the Worker constructor is a function to run, not a script.
2) Receiving a message from a worker is a synchronous API (as there is no event
loop).

The serialization done here is not robust as the real DOM implementation. For
example, recursive data structures or otherwise duplicated objects are not
allowed.

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

Review URL: https://codereview.chromium.org/1185643004

Cr-Commit-Position: refs/heads/master@{#29126}