Every time embedder calls v8::HeapProfiler::GetHeapStats we store next unuassigned heap object id and timestamp of the request. This patch serializes all that data into heap snapshot so that embedder can restore allocation timeline.

BUG=chromium:467222
LOG=Y

Review URL: https://codereview.chromium.org/1019813004

Cr-Commit-Position: refs/heads/master@{#27384}

Port 6689cc27

Original commit message:
Handlers should be in charge of this work. The change uncovered a bug in
vector-ics related to keyed loads into strings. It's important for
StringCharCodeAtGenerator, a helper used in full code and in
LoadIndexedStringStub (a handler) to protect the vector and slot registers
when it makes a runtime call to convert a HeapNumber to a Smi.

It's still possible for the handler to MISS after this call, perhaps due
to out of bounds access. In that case, the vector and slot registers need
to be delivered safely to the MISS handler.

BUG=

Review URL: https://codereview.chromium.org/1025303005

Cr-Commit-Position: refs/heads/master@{#27383}

Port 8c0d2897

Original commit message:

R=mbrandy@us.ibm.com, svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1019843003

Cr-Commit-Position: refs/heads/master@{#27382}

Port 15f82138

Original commit message:
This relands commit 96f79568.

This makes the Isolate::Throw logic not depend on a prediction of
whether an exception is caught or uncaught. Such a prediction is
inherently undecidable because a finally block can decide between
consuming or re-throwing an exception depending on arbitray control
flow.

There still is a conservative prediction mechanism in place that
components like the debugger or tracing can use for reporting.

With this change we can get rid of the StackHandler::kind field, a
pre-requisite to do table-based lookups of exception handlers.

R=mbrandy@us.ibm.com, yangguo@chromium.org, svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1016333002

Cr-Commit-Position: refs/heads/master@{#27381}

Port 16c8485a

Original commit message:
Replaces StoreGlobalCell / LoadGlobalCell with NamedField variants that use write barriers.

R=mbrandy@us.ibm.com, svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1018333003

Cr-Commit-Position: refs/heads/master@{#27380}

BUG=

Review URL: https://codereview.chromium.org/1017263003

Cr-Commit-Position: refs/heads/master@{#27379}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1029643002

Cr-Commit-Position: refs/heads/master@{#27378}

Handlers should be in charge of this work. The change uncovered a bug in
vector-ics related to keyed loads into strings. It's important for
StringCharCodeAtGenerator, a helper used in full code and in
LoadIndexedStringStub (a handler) to protect the vector and slot registers
when it makes a runtime call to convert a HeapNumber to a Smi.

It's still possible for the handler to MISS after this call, perhaps due
to out of bounds access. In that case, the vector and slot registers need
to be delivered safely to the MISS handler.

BUG=

Review URL: https://codereview.chromium.org/1028093002

Cr-Commit-Position: refs/heads/master@{#27377}

This removes the stub-based constructor from CompilationInfoWithZone
as this class is more than a pure convenience class and only by chance
doesn't have an effect in the destructor.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1026513004

Cr-Commit-Position: refs/heads/master@{#27376}

BUG=

Review URL: https://codereview.chromium.org/1025333002

Cr-Commit-Position: refs/heads/master@{#27375}

This method uses in messages.js in GetSourceLine and GetPositionInLine. This methods uses in v8::Message API methods and there is no documentation about it.
Method looks obsolete.
One of the strange side effect is shown by attached issue.

BUG=chromium:468781
R=yangguo@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/1022333004

Cr-Commit-Position: refs/heads/master@{#27374}

R=jarin@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1018853003

Cr-Commit-Position: refs/heads/master@{#27373}

15.5.4.6 5.b requires each part to be converted using ToString(). This also needs to occur in the single argument fast-case.

BUG=v8:3981
R=arv@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1029103002

Cr-Commit-Position: refs/heads/master@{#27372}

BUG=

Review URL: https://codereview.chromium.org/1009123003

Cr-Commit-Position: refs/heads/master@{#27371}

Readded after https://codereview.chromium.org/1029063002/ with correct line endings.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1032443002

Cr-Commit-Position: refs/heads/master@{#27370}

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1028973002

Cr-Commit-Position: refs/heads/master@{#27369}

We can't simple delete and add one file in one CL. This is necessary for replacing this test with version with LF line endings.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1029063002

Cr-Commit-Position: refs/heads/master@{#27368}

This allows using %OptimizeFunctionOnNextCall and friends even when
Crankshaft is disabled. Note that this should only affect code paths
that are not relevant to performance. By now we have a single bailout
point in place within OptimizedCompileJob::CreateGraph that ensures
Crankshaft is only used when enabled and supported.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/999173007

Cr-Commit-Position: refs/heads/master@{#27367}

R=jarin@chromium.org
BUG=chromium:469605
LOG=Y

Review URL: https://codereview.chromium.org/1030623003

Cr-Commit-Position: refs/heads/master@{#27366}

Port 34a1a76d

Original commit message:
A hydrogen code stub is not the best approach because it builds a frame
and doesn't have the technology to discard roots at tail call exits.
Platform-specific stubs provide much better performance at this point.

R=verwaest@chromium.org, mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1019003002

Cr-Commit-Position: refs/heads/master@{#27365}

BUG=v8:3976
LOG=NO

Review URL: https://codereview.chromium.org/1025643002

Cr-Commit-Position: refs/heads/master@{#27364}

BUG=
LOG=N
NOTRY=true

Review URL: https://codereview.chromium.org/1022413003

Cr-Commit-Position: refs/heads/master@{#27363}

BUG=v8:3877
LOG=NO

Review URL: https://codereview.chromium.org/1018283002

Cr-Commit-Position: refs/heads/master@{#27362}

ARM64 support for Float64Min and Float64Max machine operators
(https://codereview.chromium.org/998283002/) using fmin and fmax.

BUG=

Review URL: https://codereview.chromium.org/1024093002

Cr-Commit-Position: refs/heads/master@{#27361}

port d4696c48 (r27150)

original commit message:

  This moves the decision whether to report a message or not to when
  the pending exception is propagated instead of trying to preserve the
  decision in a ThreadLocalTop field.

BUG=

Review URL: https://codereview.chromium.org/1028073002

Cr-Commit-Position: refs/heads/master@{#27360}

BUG=

Review URL: https://codereview.chromium.org/1025073004

Cr-Commit-Position: refs/heads/master@{#27359}

port f71e2626 (r27127)

original commit message:

  Simplify pending message script handling.

  This removes the separate tracking of the pending message script,
  because that script is already stored in the message object and
  duplicating it in the ThreadLocalTop makes it more brittle.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/1028993003

Cr-Commit-Position: refs/heads/master@{#27358}

port 36e69a91 (r27115)

original commit message:

 This reduces the size of the StackHandler by yet another word. We no
 longer need to keep track of the frame pointer, as the stack walk will
 be able to recalculate it.

BUG=

Review URL: https://codereview.chromium.org/1030563002

Cr-Commit-Position: refs/heads/master@{#27357}

port 8d946b9c (r27106).

original commit message:

  [es6] Throw TypeError for computed static prototype property name

  The prototype of a class constructor function is read only. When we set
  computed property names we were ignoring this and we were overriding the
  property.

  Since the prototype is the only possible own read only property on the
  constructor function object we special case this so we do not have to
  check this for every property in the class literal.

BUG=

Review URL: https://codereview.chromium.org/1028983002

Cr-Commit-Position: refs/heads/master@{#27356}

We were using ToObject in a lot of places where the common case is that
we already have an object. By changing to TO_OBJECT_INLINE we don't
have to go through 5 different if statements before falling through.

We were also calling ToObject too many times in DefineObjectProperty
where we already know that obj is an object.

BUG=None
LOG=N

Review URL: https://codereview.chromium.org/1019413002

Cr-Commit-Position: refs/heads/master@{#27355}

The final spec for Object.getPrototypeOf calls ToObject on the
parameter, which means that it should only throw for null and
undefined. For other non object values the prototype of the wrapper
should be used.

BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1014813003

Cr-Commit-Position: refs/heads/master@{#27354}

port e0aa8ebf (r27103).

original commit message:

  This reduces the size of the StackHandler by one word. We no longer
  need to keep track of the code object, as the stack walk finds it.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/1022403002

Cr-Commit-Position: refs/heads/master@{#27353}

BUG=v8:3230
R=dslomov@chromium.org, arv@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1027593005

Cr-Commit-Position: refs/heads/master@{#27352}

BUG=

Review URL: https://codereview.chromium.org/1025453003

Cr-Commit-Position: refs/heads/master@{#27351}

Rolling v8/third_party/icu to 7c81740601355556e630da515b74d889ba2f8d08

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1030513002

Cr-Commit-Position: refs/heads/master@{#27350}

Port bef80fcf

BUG=v8:3977
LOG=N

Review URL: https://codereview.chromium.org/1028703002

Cr-Commit-Position: refs/heads/master@{#27349}

as of https://reviews.freebsd.org/D848. This makes V8 build on
FreeBSD-current (and the forthcoming 11).

BUG=none
LOG=n

Review URL: https://codereview.chromium.org/1025823003

Cr-Commit-Position: refs/heads/master@{#27348}

Port d21fd154

TEST=mjsunit/harmony/reflect-construct
BUG=

Review URL: https://codereview.chromium.org/1022053002

Cr-Commit-Position: refs/heads/master@{#27347}

BUG=chromium:469148
LOG=y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1023123003

Cr-Commit-Position: refs/heads/master@{#27346}

Revert of Allow compaction when incremental marking is on. (patchset #1 id:1 of https://codereview.chromium.org/1014263002/)

Reason for revert:
It seems to cause crbug/469146.

Original issue's description:
> Allow compaction when incremental marking is on.
>
> BUG=chromium:450824
> LOG=NO
>
> Committed: https://crrev.com/92f96e4e9a527fcb085b68f81ee14b26acdd4719
> Cr-Commit-Position: refs/heads/master@{#27267}

TBR=hpayer@chromium.org,ulan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:450824

Review URL: https://codereview.chromium.org/1026813002

Cr-Commit-Position: refs/heads/master@{#27345}