There might be a number of clients that would like to
setup an interrupt request on the Isolate.

The patch also deprecates ClearInterrupt API. As long as
the interrupt handler is called outside of locks there's no way
to guarantee that the handler will not be called after
ClearInterrupt was invoked as it might have already started execution.

Review URL: https://codereview.chromium.org/796623003

Cr-Commit-Position: refs/heads/master@{#25910}

Rolling v8/buildtools to 23a4e2f545c7b6340d7e5a2b74801941b0a86535

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/812553008

Cr-Commit-Position: refs/heads/master@{#25909}

This avoids touching the Array prototype, which may have been tampered with.

BUG=chromium:443982
LOG=n

Review URL: https://codereview.chromium.org/820503005

Cr-Commit-Position: refs/heads/master@{#25908}

Regular ICs in MONOMORPHIC and POLYMORPHIC state now hold onto maps with
WeakCells. Vector-based ICs should do the same.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/815953002

Cr-Commit-Position: refs/heads/master@{#25907}

Port bc0d2e23

BUG=v8:3629
LOG=N
TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/814193004

Cr-Commit-Position: refs/heads/master@{#25906}

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/812353002

Cr-Commit-Position: refs/heads/master@{#25905}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/814833006

Cr-Commit-Position: refs/heads/master@{#25904}

r25817 optimized hydrogen keyed loads with string keys.
(https://codereview.chromium.org/755513003).
This CL adapts that work for the vector-ic keyed load.

BUG=

Review URL: https://codereview.chromium.org/820673002

Cr-Commit-Position: refs/heads/master@{#25903}

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/816923004

Cr-Commit-Position: refs/heads/master@{#25902}

BUG=chromium:443744
LOG=y
TEST=mjsunit/compiler/regress-443744
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/804993004

Cr-Commit-Position: refs/heads/master@{#25901}

This ensures that we always have a kind of "brace" around the actual compilation
with --trace-opt. Previously this was coupled to --trace-hydrogen for
Crankshaft, and there was no output at the start of the compilation for
TurboFan.

Removed redundant "[completed...]" output: Whenever the compilation was
successful, we have already printed "[optimizing...took...]".

Output total TurboFanning time with --trace-opt, too (basically as graph
building time, this is rather arbitrary).

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/819613002

Cr-Commit-Position: refs/heads/master@{#25900}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/814203002

Cr-Commit-Position: refs/heads/master@{#25899}

Denver supports a coherent cache mechanism. There is no need to clean
the D cache and invalidate I cache. MTS has to check the translation
anytime there is an I cache invalidate and this time can be saved by
making FlushICache a NOP.

The patch improves Octane by roughly 3-4% on Denver.

Review URL: https://codereview.chromium.org/797233002

Cr-Commit-Position: refs/heads/master@{#25898}

Use std::numeric_limits consistently.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/798413003

Cr-Commit-Position: refs/heads/master@{#25897}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/792013006

Cr-Commit-Position: refs/heads/master@{#25896}

LOG=N
BUG=
R=arv@chromium.org, dslomov@chromium.org

Review URL: https://codereview.chromium.org/812163003

Cr-Commit-Position: refs/heads/master@{#25895}

Rolling v8/third_party/icu to 51c1a4ce5f362676aa1f1cfdb5b7e52edabfa5aa

TBR=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/816763003

Cr-Commit-Position: refs/heads/master@{#25894}

otherwise, the clang we ship doesn't work

BUG=none
R=adamk@chromium.org,thakis@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/792783006

Cr-Commit-Position: refs/heads/master@{#25893}

BUG=v8:3230
LOG=Y
R=dslomov@chromium.org, caitpotter88@gmail.com

Review URL: https://codereview.chromium.org/808413004

Cr-Commit-Position: refs/heads/master@{#25892}

Correctly handle SyntaxErrors in escape sequences.

BUG=v8:3736
LOG=Y
R=dslomov@chromium.org, caitpotter88@gmail.com

Review URL: https://codereview.chromium.org/811113002

Cr-Commit-Position: refs/heads/master@{#25891}

I picked a more conservative start value this time of half max old generation size.

BUG=

Review URL: https://codereview.chromium.org/804323004

Cr-Commit-Position: refs/heads/master@{#25890}

BUG=

Review URL: https://codereview.chromium.org/753553002

Cr-Commit-Position: refs/heads/master@{#25889}

Revert of [turbofan] simplify gap ordering (patchset #2 id:20001 of https://codereview.chromium.org/810013002/)

Reason for revert:
Revert for breaking emscripten bullet with turbofan on android arm64.

Original issue's description:
> [turbofan] simplify gap ordering
>
> BUG=
>
> Committed: https://crrev.com/70b5eb47b39acbf31746f4a116a9b3ce2730218a
> Cr-Commit-Position: refs/heads/master@{#25865}

TBR=bmeurer@chromium.org,dcarney@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/815743002

Cr-Commit-Position: refs/heads/master@{#25888}

This keeps dying maps alive for FLAG_retain_maps_for_n_gc garbage collections to increase chances of them being reused for new objects in future.

BUG=v8:3664
LOG=N
TEST=cctest/test-heap/MapRetaining

Review URL: https://codereview.chromium.org/794583003

Cr-Commit-Position: refs/heads/master@{#25887}

Revert of [turbofan] Skip printing of empty gap moves. (patchset #1 id:1 of https://codereview.chromium.org/812983002/)

Reason for revert:
Needed to revert https://chromium.googlesource.com/v8/v8/+/70b5eb47b39acbf31746f4a116a9b3ce2730218a

Original issue's description:
> [turbofan] Skip printing of empty gap moves.
>
> R=bmeurer@chromium.org
> BUG=

TBR=bmeurer@chromium.org,titzer@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/816703002

Cr-Commit-Position: refs/heads/master@{#25886}

This is a follow-up to r25153.

BUG=v8:3766
LOG=n

Review URL: https://codereview.chromium.org/807273003

Cr-Commit-Position: refs/heads/master@{#25885}

Revert of [turbofan] remove control field from instruction (patchset #1 id:1 of https://codereview.chromium.org/810023002/)

Reason for revert:
Needed to revert https://chromium.googlesource.com/v8/v8/+/70b5eb47b39acbf31746f4a116a9b3ce2730218a

Original issue's description:
> [turbofan] remove control field from instruction
>
> R=titzer@chromium.org
> BUG=
>
> Committed: https://crrev.com/7b9cb2eb3764d0c807c669e397fc3b84fbefb175
> Cr-Commit-Position: refs/heads/master@{#25866}

TBR=titzer@chromium.org,dcarney@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/814043002

Cr-Commit-Position: refs/heads/master@{#25884}

crash is fixed.

BUG=v8:3776
LOG=N
TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/812283004

Cr-Commit-Position: refs/heads/master@{#25883}

BUG=v8:3663
TEST=cctest/test-heap/MonomorphicStaysMonomorphicAfterGC
LOG=N

Review URL: https://codereview.chromium.org/816653002

Cr-Commit-Position: refs/heads/master@{#25882}

BUG=442710
LOG=n

Review URL: https://codereview.chromium.org/813023002

Cr-Commit-Position: refs/heads/master@{#25881}

BUG=v8:3773
LOG=y

Review URL: https://codereview.chromium.org/809293003

Cr-Commit-Position: refs/heads/master@{#25880}

The input string is not necessarily zero terminated

BUG=chromium:443230
R=adamk@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/795383003

Cr-Commit-Position: refs/heads/master@{#25879}

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/812983002

Cr-Commit-Position: refs/heads/master@{#25878}

Before, we'd just crash.

BUG=v8:3348
R=svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/807313003

Cr-Commit-Position: refs/heads/master@{#25877}

BUG=443153
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/811073002

Cr-Commit-Position: refs/heads/master@{#25876}

- (y * (K << L) + x) & (-1 << L) => (x & (-1 << L)) + y * (K << L)
- (x + y * (K << L)) & (-1 << L) => (x & (-1 << L)) + y * (K << L)

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/811293002

Cr-Commit-Position: refs/heads/master@{#25875}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/809313002

Cr-Commit-Position: refs/heads/master@{#25874}

R=marja@chromium.org
BUG=

Review URL: https://codereview.chromium.org/810053002

Cr-Commit-Position: refs/heads/master@{#25873}

Revert of ES6 computed property names (patchset #1 id:1 of https://codereview.chromium.org/792233008/)

Reason for revert:
[sheriff] Still crashes on win32 (XP):
http://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%201/builds/1380

Original issue's description:
> ES6 computed property names
>
> This adds support for computed property names, under the flag
> --harmony-computed-property-names, for both object literals and
> classes.
>
> This is a revert of the revert, a76419f0.
>
> This changes to do an early bailout in
> HOptimizedGraphBuilder::VisitObjectLiteral instead of doing that in the later
> loop.
>
> BUG=v8:3754
> LOG=Y
> TBR=dslomov@chromium.org

TBR=dslomov@chromium.org,arv@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=v8:3754

Review URL: https://codereview.chromium.org/811593004

Cr-Commit-Position: refs/heads/master@{#25872}

Cr-Commit-Position: refs/heads/master@{#25871}