In this new version of test262, a number of known failing tests have
been changed to match the ES2016 semantics, which V8 implements.

R=adamk

Review URL: https://codereview.chromium.org/1475793004

Cr-Commit-Position: refs/heads/master@{#32303}

validating that the hot path does not spill - somewhat simpler code.

Cleared the scenario where a range is defined in a deferred block. The
code before was slightly more complicated by not leveraging the
property that these sort of ranges would be completely contained within
deferred blocks.

Moved "spills in deferred blocks" marking to a more appropriate
location.

One thing this CL achieves is correct support for scenarios where a
range is spilled both on the deferred and then hot path, and the ranges
concatenate. I owe better unit testing, which I will add in a subsequent
CL.

BUG=

Review URL: https://codereview.chromium.org/1472803004

Cr-Commit-Position: refs/heads/master@{#32302}

The Float32RoundTruncate operator rounds float32 numbers towards zero.
The operator is currently implemented on x64, ia32, arm, and arm64.

Additionally I added support for the float32 vrintz, vrintn, and vrinta
instructions to the arm simulator.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1468303005

Cr-Commit-Position: refs/heads/master@{#32301}

Always go through Assembler::FlushICache so we automatically use the
simulator when running with a simulator.

BUG=v8:2487
R=epertoso@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1480623002

Cr-Commit-Position: refs/heads/master@{#32300}

Revert of [debugger] flood function for stepping before calling it. (patchset #7 id:120001 of https://codereview.chromium.org/1463803002/ )

Reason for revert:
[Sheriff] Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/3074

Original issue's description:
> [debugger] flood function for stepping before calling it.
>
> R=verwaest@chromium.org
>
> Committed: https://crrev.com/93eb633214e0f97bf70ae30d2a07b7fbbaa78266
> Cr-Commit-Position: refs/heads/master@{#32285}

TBR=verwaest@chromium.org,mstarzinger@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1474943005

Cr-Commit-Position: refs/heads/master@{#32299}

Merge BinaryOperatorReducer into the MachineOperatorReducer class.
It does not need `Revisit()` calls, because the newly inserted nodes are
visited anyway, and there are no other methods that need AdvancedReducer
there.

BUG=
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1473073004

Cr-Commit-Position: refs/heads/master@{#32298}

BUG=

Review URL: https://codereview.chromium.org/1472393002

Cr-Commit-Position: refs/heads/master@{#32297}

Since the gn builders do not resolve the DEPS after patch, the patch cannot contain
both the DEPS change as well the usage of the newly added DEPS.

If the CL mentioned in the title does not land, this CL is to be remove/reverted as well.

BUG=v8:4560
LOG=N

Review URL: https://codereview.chromium.org/1469303004

Cr-Commit-Position: refs/heads/master@{#32296}

BUG=v8:4572, chromium:561481
LOG=Y

Review URL: https://codereview.chromium.org/1465223007

Cr-Commit-Position: refs/heads/master@{#32295}

Revert of Tenure descriptor arrays. (patchset #1 id:1 of https://codereview.chromium.org/1476913002/ )

Reason for revert:
[Sheriff] Breaks gc stress:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/builds/544

Original issue's description:
> Tenure descriptor arrays.
>
> BUG=
>
> Committed: https://crrev.com/38ec44f3bde8c16448e093b6595d0452e189023f
> Cr-Commit-Position: refs/heads/master@{#32289}

TBR=ishell@chromium.org,hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1477003003

Cr-Commit-Position: refs/heads/master@{#32294}

Reland of [turbofan] Introduce proper JSCreateLiteralRegExp operator. (patchset #1 id:1 of https://codereview.chromium.org/1472423002/ )

Reason for revert:
[Sheriff] Wrong revert.

Original issue's description:
> Revert of [turbofan] Introduce proper JSCreateLiteralRegExp operator. (patchset #2 id:20001 of https://codereview.chromium.org/1475973002/ )
>
> Reason for revert:
> Broke "V8 Linux64 GC Stress - custom snapshot".
>
> http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/2824
>
> Original issue's description:
> > [turbofan] Introduce proper JSCreateLiteralRegExp operator.
> >
> > This adds a new JavaScript level operator for regexp literal creation,
> > similar to what we already have for array and object literals. This
> > once gets lowered to a call to the FastCloneRegExpStub always.
> >
> > R=mstarzinger@chromium.org
> >
> > Committed: https://crrev.com/8659c5d1d287177369ce179a8d0b910192d840d9
> > Cr-Commit-Position: refs/heads/master@{#32288}
>
> TBR=mstarzinger@chromium.org,bmeurer@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/168683d270d44f05f28acaf7d34c32d0250d2a4c
> Cr-Commit-Position: refs/heads/master@{#32292}

TBR=mstarzinger@chromium.org,bmeurer@chromium.org,ishell@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1478823002

Cr-Commit-Position: refs/heads/master@{#32293}

Revert of [turbofan] Introduce proper JSCreateLiteralRegExp operator. (patchset #2 id:20001 of https://codereview.chromium.org/1475973002/ )

Reason for revert:
Broke "V8 Linux64 GC Stress - custom snapshot".

http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/2824

Original issue's description:
> [turbofan] Introduce proper JSCreateLiteralRegExp operator.
>
> This adds a new JavaScript level operator for regexp literal creation,
> similar to what we already have for array and object literals. This
> once gets lowered to a call to the FastCloneRegExpStub always.
>
> R=mstarzinger@chromium.org
>
> Committed: https://crrev.com/8659c5d1d287177369ce179a8d0b910192d840d9
> Cr-Commit-Position: refs/heads/master@{#32288}

TBR=mstarzinger@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1472423002

Cr-Commit-Position: refs/heads/master@{#32292}

Iterating live objects using mark bits is memory bound and already pretty heavy
on the cache as we always need to look at the mark bits, the objects (payload),
and their maps.

This CL changes the object start computation from a table lookup, which was yet
another memory location, to a CPU-bound computation.

BUG=chromium:524425
LOG=N

Review URL: https://codereview.chromium.org/1478623003

Cr-Commit-Position: refs/heads/master@{#32291}

Also add a note that it should go away over time.

BUG=none
LOG=n

Review URL: https://codereview.chromium.org/1475033003

Cr-Commit-Position: refs/heads/master@{#32290}

BUG=

Review URL: https://codereview.chromium.org/1476913002

Cr-Commit-Position: refs/heads/master@{#32289}

This adds a new JavaScript level operator for regexp literal creation,
similar to what we already have for array and object literals. This
once gets lowered to a call to the FastCloneRegExpStub always.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1475973002

Cr-Commit-Position: refs/heads/master@{#32288}

R=jkummerow@chromium.org
BUG=v8:2487
LOG=n

Review URL: https://codereview.chromium.org/1473683004

Cr-Commit-Position: refs/heads/master@{#32287}

It appears unused, everything uses static_assert directly.

BUG=none
LOG=n

Review URL: https://codereview.chromium.org/1465383006

Cr-Commit-Position: refs/heads/master@{#32286}

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1463803002

Cr-Commit-Position: refs/heads/master@{#32285}

BUG=561449
LOG=n

Review URL: https://codereview.chromium.org/1468313007

Cr-Commit-Position: refs/heads/master@{#32284}

This is a preparation for requiring an isolate to construct a
CodePatcher

BUG=2487
R=epertoso@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1480573002

Cr-Commit-Position: refs/heads/master@{#32283}

BUG=v8:4358
LOG=n
TBR=yangguo@chromium.org, hablich@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1475053002

Cr-Commit-Position: refs/heads/master@{#32282}

BUG=v8:4531
LOG=Y

Review URL: https://codereview.chromium.org/1468933004

Cr-Commit-Position: refs/heads/master@{#32281}

Adds implementation and tests for compare operators to bytecode graph builder.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1476473005

Cr-Commit-Position: refs/heads/master@{#32280}

Moving Blink from hidden values to private symbols almost doubled the
rate of API calls, as the private symbols API increases the call-depth
scope while the hidden values one didn't.

I manually checked that this fixes the regression on the long running
gmail benchmark but doesn't add new memory reducer GCs on the infinite
scrolling benchmark

BUG=chromium:561325
R=ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1472193003

Cr-Commit-Position: refs/heads/master@{#32279}

Cr-Commit-Position: refs/heads/master@{#32278}

We always want to have an Isolate, so just use an extra ctor arg

BUG=2487
R=yangguo@chromium.org,mstarzinger@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1476763002

Cr-Commit-Position: refs/heads/master@{#32277}

BUG=v8:4573
LOG=n
TBR=mstarzinger@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1465193006

Cr-Commit-Position: refs/heads/master@{#32276}

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

Review URL: https://codereview.chromium.org/1475843003 .

Cr-Commit-Position: refs/heads/master@{#32275}

Warn if unknown benchmark configurations are triggered.

NOTRY=true

Review URL: https://codereview.chromium.org/1479483003

Cr-Commit-Position: refs/heads/master@{#32274}

ES6 section 12.2.8.1 states that flags for regular expression literals
must be checked during parsing and invalid flags are early errors. This
change adapts the Scanner and (Pre)Parser to act according to the spec.

This is also a prerequisite to unify the handling of literal creation
(for Objects, Arrays, Regexps, and at some point Classes).

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1472323002

Cr-Commit-Position: refs/heads/master@{#32273}

BUG=chromium:554488
LOG=NO

Review URL: https://codereview.chromium.org/1470773003

Cr-Commit-Position: refs/heads/master@{#32272}

This loads all test suites and status files to catch subtle
syntax errors. It also checks basic status file integrity
and common mistakes.

NOTRY=true

Review URL: https://codereview.chromium.org/1475663002

Cr-Commit-Position: refs/heads/master@{#32271}

Started failing after https://codereview.chromium.org/1469313002

NOTRY=true
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1476603003

Cr-Commit-Position: refs/heads/master@{#32270}

Turns out we've been putting garbage into code->constant_pool_offset
for quite some time.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1478713002

Cr-Commit-Position: refs/heads/master@{#32269}

BUG=v8:4572
LOG=Y

Review URL: https://codereview.chromium.org/1481493003

Cr-Commit-Position: refs/heads/master@{#32268}

BUG=

Review URL: https://codereview.chromium.org/1466303005

Cr-Commit-Position: refs/heads/master@{#32267}

Review URL: https://codereview.chromium.org/1479503002

Cr-Commit-Position: refs/heads/master@{#32266}

BUG=v8:4518
LOG=n

Review URL: https://codereview.chromium.org/1472293002

Cr-Commit-Position: refs/heads/master@{#32265}

This passes the new.target value in a register instead of through a
side-channel via the construct stub. The interpreter entry trampoline
stores this value in a bytecode register so that it can be accessed
directly by the interpreter. The size of the interpreter stack frame
hence grows by one slot.

R=oth@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1469313002

Cr-Commit-Position: refs/heads/master@{#32264}