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}

BUG=v8:3977
R=dslomov@chromium.org, arv@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1018043003

Cr-Commit-Position: refs/heads/master@{#27344}

Port 3aa206b8

BUG=v8:3952
LOG=n

Review URL: https://codereview.chromium.org/1020223002

Cr-Commit-Position: refs/heads/master@{#27343}

port 1382879f (r27016).

oringinal commit message:

    [turbofan] Implement throwing exceptions into TurboFan code.

    This extends the stack unwinding logic to respect optimized frames
    and perform a lookup in the handler table to find handlers. It also
    contains fixes to the API call stubs to allow a stack walk while
    promoting scheduled exceptions.

BUG=

Review URL: https://codereview.chromium.org/1023943002

Cr-Commit-Position: refs/heads/master@{#27342}

R=jarin@chromium.org
BUG=chromium:468162
LOG=y

Review URL: https://codereview.chromium.org/1027753002

Cr-Commit-Position: refs/heads/master@{#27341}

This speeds up multiple uses of the serializer quite a bit.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1003363003

Cr-Commit-Position: refs/heads/master@{#27340}

TBR=dslomov@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1027693003

Cr-Commit-Position: refs/heads/master@{#27339}

R=dslomov@chromium.org
BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1021213002

Cr-Commit-Position: refs/heads/master@{#27338}

String functions are shipping since 4.1/Chrome M41, it is time to unflag.

R=yanngguo@chromium.org,rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1024813002

Cr-Commit-Position: refs/heads/master@{#27337}

Turn Math.acos, Math.asin, Math.atan, Math.atan2, Math.sign and Math.trunc
into inlinable builtins.

R=yangguo@chromium.org
BUG=v8:3952
LOG=n

Review URL: https://codereview.chromium.org/1027713002

Cr-Commit-Position: refs/heads/master@{#27336}

Maybe it was overapproximated via the idle notification already, so just
don't retry in that case

BUG=chromium:469023
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1025603003

Cr-Commit-Position: refs/heads/master@{#27335}

BUG=v8:3974
LOG=NO

Review URL: https://codereview.chromium.org/1021523002

Cr-Commit-Position: refs/heads/master@{#27334}

BUG=chromium:469089
LOG=n
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1026683002

Cr-Commit-Position: refs/heads/master@{#27333}

port 2ecdf736 (r27014).

original commit message:

  Fix exception for assignment to uninitialised const.

BUG=

Review URL: https://codereview.chromium.org/1028533002

Cr-Commit-Position: refs/heads/master@{#27332}

To ensure termination, we need to be sure that once we start weakening
a node, we keep weakening that node in subsequent re-typings. Until now,
we were guessing that we previously weakened from the type. This
change introduces a set of nodes that have already be weakened, so
that we have a reliable way to detect previous weakening.

BUG=chromium:468799
LOG=n
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1019883002

Cr-Commit-Position: refs/heads/master@{#27331}

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1028563002

Cr-Commit-Position: refs/heads/master@{#27330}

R=dcarney@chromium.org, yangguo@chromium.org
BUG=v8:3952
LOG=n

Review URL: https://codereview.chromium.org/1021183002

Cr-Commit-Position: refs/heads/master@{#27329}

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1028553002

Cr-Commit-Position: refs/heads/master@{#27328}

Rolling v8/third_party/icu to d319ad9e25e8045f051dcd30bd5835f99936af6c

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1021953002

Cr-Commit-Position: refs/heads/master@{#27327}

Port d21fd154

Known issue: the mjsunit/harmony/reflect-construct test fails, it will be addressed in a follow-up CL.

BUG=

Review URL: https://codereview.chromium.org/1021863002

Cr-Commit-Position: refs/heads/master@{#27326}

The problem manifests itself when parsing manages to return something
meaningful in the presence of a stack overflow. This happens because
calling ParserBase::Next() will still return one valid token on stack
overflow, before starting to return invalid tokens.

Take the following input as example:

        a.map(v => v + 1);
              | |
       already   next token
        parsed   (which will be an invalid token
  (identifier)   because of a stack overflow)

The "v" may have been already parsed into a VariableProxy, then if a
stack overflow occurs, next token will be an invalid token (instead
of Token::ARROW), but the parser will return the VariableProxy.

This always happens when lazy-parsing arrow functions, so the position
in the input stream where the the arrow function code ends is known.
This fix adds a check that ensures that parsing ended at the end
position of the arrow function.

BUG=465671
LOG=N

Review URL: https://codereview.chromium.org/1023483003

Cr-Commit-Position: refs/heads/master@{#27325}

Cannot use Handle<T>::cast in Unique<T>::cast since it will try to do a T::cast (and its typecheck) concurrently, which is unsafe concurrently on moving values

BUG=

Review URL: https://codereview.chromium.org/1022943002

Cr-Commit-Position: refs/heads/master@{#27324}

TBR=verwaest@chromium.org,ulan@chromium.org,ishell@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1027463002

Cr-Commit-Position: refs/heads/master@{#27323}

BUG=chromium:468749
LOG=NO
TEST=Emscripten/NBodyJava

Review URL: https://codereview.chromium.org/1014093005

Cr-Commit-Position: refs/heads/master@{#27322}

Rename kMaxFrameRenderingIdleTime to kMaxActiveIdleTime and adjust it to the currently maximum value of 50ms passed in by the Blink scheduler.

BUG=468692
LOG=n

Review URL: https://codereview.chromium.org/1024543002

Cr-Commit-Position: refs/heads/master@{#27321}

R=dslomov@chromium.org
BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1019283002

Cr-Commit-Position: refs/heads/master@{#27320}

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1022783002

Cr-Commit-Position: refs/heads/master@{#27319}

With this patch, it'll look like this:

$ out/x64.optdebug/d8 --expose-trigger-failure test/mjsunit/mjsunit.js test/mjsunit/verify-assert-false.js

==== C stack trace ===============================

 1: V8_Fatal
 2: v8::internal::FunctionCallbackArguments::Call(void (*)(v8::FunctionCallbackInfo<v8::Value> const&))
 3: 0x727ced
 4: 0x72b6ba
 5: 0x188c7f607f9b

BUG=none
R=svenpanne@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1018313003

Cr-Commit-Position: refs/heads/master@{#27318}

BUG=468601
LOG=n

Review URL: https://codereview.chromium.org/1016353002

Cr-Commit-Position: refs/heads/master@{#27317}

BUG=v8:3900
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/913073003

Cr-Commit-Position: refs/heads/master@{#27316}

BUG=

Review URL: https://codereview.chromium.org/998883002

Cr-Commit-Position: refs/heads/master@{#27315}

BUG=

Review URL: https://codereview.chromium.org/1009603003

Cr-Commit-Position: refs/heads/master@{#27314}

Only adds a counter id, does not count anything.

R=jochen@chromium.org
BUG=v8:3942
LOG=N

Review URL: https://codereview.chromium.org/1020883002

Cr-Commit-Position: refs/heads/master@{#27313}

I was mistaken, cons strings only occur a lot for custom heap snapshots,
not for the default start-up snapshot.

R=erik.corry@gmail.com, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1023673003

Cr-Commit-Position: refs/heads/master@{#27312}

BUG=

Review URL: https://codereview.chromium.org/1020863003

Cr-Commit-Position: refs/heads/master@{#27311}

With this change, we remember the types of frame state inputs (in a new
operator, called TypedStateValues). Instead of inferring the value types
when building translations, we used the recorded types.

The original approach was not reliable because the passes after
simplified lowering can change node types, and this in turn confuses
the translation builder.

BUG=chromium:468727
LOG=n
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1015423002

Cr-Commit-Position: refs/heads/master@{#27310}

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1025433002

Cr-Commit-Position: refs/heads/master@{#27309}