These flags have been on by default since version 4.9, which has been
in stable Chrome for over a week now, demonstrating that they're
here to stay.

Also moved the tests out of harmony/ and into es6/.

Review URL: https://codereview.chromium.org/1776683003

Cr-Commit-Position: refs/heads/master@{#34692}

The comment was correct but the code didn't match :(
Must not close when .value throws.

R=adamk@chromium.org
BUG=v8:3566
LOG=n

Review URL: https://codereview.chromium.org/1778333002

Cr-Commit-Position: refs/heads/master@{#34691}

R=littledan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1779133002

Cr-Commit-Position: refs/heads/master@{#34690}

LOG=N

Review URL: https://codereview.chromium.org/1776853003

Cr-Commit-Position: refs/heads/master@{#34689}

This method was added as part of DevTools experiment.
Experiment UI was removed in https://codereview.chromium.org/201293007 2 years ago.
Experiment backend was removed in https://codereview.chromium.org/1785533002/.

R=yangguo@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1770383006

Cr-Commit-Position: refs/heads/master@{#34688}

Move evacuation of new and old space pages to the provided framework for
parallelization.

Drive-by-fix: Remove left overs from POPULAR_PAGE flag.

BUG=chromium:524425
LOG=N

Review URL: https://codereview.chromium.org/1782043004

Cr-Commit-Position: refs/heads/master@{#34687}

Copy-pasta error.

R= titzer@chromium.org

Review URL: https://codereview.chromium.org/1778383003

Cr-Commit-Position: refs/heads/master@{#34686}

Cr-Commit-Position: refs/heads/master@{#34685}

Use internal handles as API, and move boilerplate code into the call wrappers.
BUG=

Review URL: https://codereview.chromium.org/1776913005

Cr-Commit-Position: refs/heads/master@{#34684}

With the original implementation nodes which were not reachable from end
could cause the verification to fail.

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

Review URL: https://codereview.chromium.org/1782863002

Cr-Commit-Position: refs/heads/master@{#34683}

R=mstarzinger@chromium.org,bradnelson@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1782613003

Cr-Commit-Position: refs/heads/master@{#34682}

Correct handling of the bottom frame in DoComputeArgumentsAdaptorFrame.

R=ishell@chromium.org, jarin@chromium.org, michael_dawson@ca.ibm.com
BUG=v8:4698
LOG=N

Review URL: https://codereview.chromium.org/1784633002

Cr-Commit-Position: refs/heads/master@{#34681}

With the flag enables we print the keys found on each prototype and
the number of prototypes.

BUG=

Review URL: https://codereview.chromium.org/1779523002

Cr-Commit-Position: refs/heads/master@{#34680}

  Reason for revert:
  The original x87 related codes of the CL #34627 (https://codereview.chromium.org/1748123003) had a mistake and caused the x87 debug build fail.
  Need to fix it and add it into the x87 port of the CL #34627

BUG=

Review URL: https://codereview.chromium.org/1778293003

Cr-Commit-Position: refs/heads/master@{#34679}

This adds a function to the sancov_merger that merges the
output files of one swarming shard in parallel. This will
be called from the infrastructure when collecting/merging
swarming results.

The tool will be called subsequently for each shard. On
the first call, the target dir will be empty and the sancov
files will just be moved.

BUG=chromium:568949
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/1782843002

Cr-Commit-Position: refs/heads/master@{#34678}

This is because compiler.cc is awesome. There are cases where we do not
yet have a SharedFunctionInfo that can tell us whether we are compiling
a generator function, we query the FunctionLiteral instead.

R=rmcilroy@chromium.org
BUG=v8:4681
LOG=n

Review URL: https://codereview.chromium.org/1780193002

Cr-Commit-Position: refs/heads/master@{#34677}

This is old code, and the same pattern appears in other places.
I have no idea what the checker's problem is all of a sudden...

TBR=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1785693002

Cr-Commit-Position: refs/heads/master@{#34676}

This ensures our optimizing compilers as well as the interpreter are
never tasked with compiling the generator-resuming builtin methods. The
corresponding intrinsics for those methods are not supported and it is
not possible to provide a C++ reference implementation for them. We do
this by assigning builtin function ids to them that we can recognize
during the compiler dispatch.

Note that this also affects the interpreter, because methods having a
builtin function id assigned are not interpreted ({function_data} field
is overlapping). If this ever changes we can still do an early check in
the compiler dispatch (similar to the optimizing compilers) easily.

This applies to the following methods:
- Generator.prototype.next (calls Runtime_GeneratorNext).
- Generator.prototype.return (calls Runtime_GeneratorReturn).
- Generator.prototype.throw (calls Runtime_GeneratorThrow).

R=neis@chromium.org
BUG=v8:4681
LOG=n

Review URL: https://codereview.chromium.org/1779123003

Cr-Commit-Position: refs/heads/master@{#34675}

Add S390 platform specific \#includes across various common files.
Add S390 CPU features to enum.
Add S390 implementation to extract sp/fp/pc from signal context.

R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1777593003

Cr-Commit-Position: refs/heads/master@{#34674}

Make the low level assembler implementation exact and protected to disallow explicit usage.

BUG=

Review URL: https://codereview.chromium.org/1749263002

Cr-Commit-Position: refs/heads/master@{#34673}

This ensures the interpreter is not tasked with compiling generator
functions. It currently does not support suspending activations at
yielding points, but we still want to be able to activate it for the
rest of JavaScript in the meantime.

R=rmcilroy@chromium.org
BUG=v8:4681
LOG=n

Review URL: https://codereview.chromium.org/1782013002

Cr-Commit-Position: refs/heads/master@{#34672}

BUG=chromium:535160, chromium:568949
LOG=n
TBR=tandrii@chromium.org, kjellander@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1777263002

Cr-Commit-Position: refs/heads/master@{#34671}

LOG=N

Review URL: https://codereview.chromium.org/1778073003

Cr-Commit-Position: refs/heads/master@{#34670}

R=mstarzinger@chromium.org,bmeurer@chromium.org,adamk@chromium.org
BUG=v8:3956
LOG=Y

Review URL: https://codereview.chromium.org/1773653002

Cr-Commit-Position: refs/heads/master@{#34669}

This will require an equivalent sexpr-wasm change.

See:
https://github.com/WebAssembly/design/blob/master/BinaryEncoding.md#high-level-structure

R=titzer@chromium.org, binji@chronium.org

Review URL: https://codereview.chromium.org/1765843002

Cr-Commit-Position: refs/heads/master@{#34668}

TBR=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1777483011 .

Cr-Commit-Position: refs/heads/master@{#34667}

BUG=593359
LOG=y

Review URL: https://codereview.chromium.org/1779713005

Cr-Commit-Position: refs/heads/master@{#34666}

BUG=chromium:568495
LOG=NO

Review URL: https://codereview.chromium.org/1775003003

Cr-Commit-Position: refs/heads/master@{#34665}

NOPRESUBMIT=true
BUG=

Review URL: https://codereview.chromium.org/1776353002

Cr-Commit-Position: refs/heads/master@{#34664}

BUG=chromium:535160,chromium:568949
LOG=n
TBR=tandrii@chromium.org, kjellander@chromium.org

Review URL: https://codereview.chromium.org/1778313002

Cr-Commit-Position: refs/heads/master@{#34663}

Only CPSR_f is supported, and then only for the flags that we actually
simulate (NZCV). This isn't currently used, but will be useful for some
tests.

BUG=

Review URL: https://codereview.chromium.org/1776933003

Cr-Commit-Position: refs/heads/master@{#34662}

Previously, optimization has been disabled because of an assertion
failure, which requires the context to be linked into the weak native
context list of the heap.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1777883003

Cr-Commit-Position: refs/heads/master@{#34661}

Inline calling into the interceptor into the IC callbacks rather than going through the LookupIterator.

This is highly performance sensitive as there is no faster path; it's
used directly by the IC.

BUG=chromium:592305
LOG=n

Review URL: https://codereview.chromium.org/1778493005

Cr-Commit-Position: refs/heads/master@{#34660}

BUG=v8:4680
LOG=n
NOTRY=true
TBR=rmcilroy@chromium.org
NOTREECHECKS=true
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1778323002

Cr-Commit-Position: refs/heads/master@{#34659}

Cr-Commit-Position: refs/heads/master@{#34658}

Changes include:
 - better test coverage for builds with snapshot
 - write snapshot blobs to buffer instead of test serialization files
 - renamed tests

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1777213002

Cr-Commit-Position: refs/heads/master@{#34657}

  port 240b7db9 (r34630)

  original commit message:
  I implemented I64ShrU and I64ShrS the same as I64Shl in https://codereview.chromium.org/1756863002

BUG=

Review URL: https://codereview.chromium.org/1783703003

Cr-Commit-Position: refs/heads/master@{#34656}

BUG=chromium:561449
LOG=n

Review URL: https://codereview.chromium.org/1778663005

Cr-Commit-Position: refs/heads/master@{#34655}

We must close the iterator whenever the destructuring didn't exhaust it, unless an iterator operation (eg. next) threw.  We do this by wrapping the iterator use in a try-catch-finally similar to the desugaring of for-of.

This is behind --harmony-iterator-close.

R=adamk@chromium.org
BUG=v8:3566
LOG=Y

Review URL: https://codereview.chromium.org/1772793002

Cr-Commit-Position: refs/heads/master@{#34654}

Cr-Commit-Position: refs/heads/master@{#34653}