Further refactor the pipeline to even run the first scheduler (part of
the effect control linearization) concurrently. This temporarily
disables most of the write barrier elimination, but we will get back to
that later.

Drive-by-fix: Remove the dead code from ChangeLowering, and stack
allocate the Typer in the pipeline. Also migrate the AllocateStub to a
native code builtin, so that we have the code object + a handle to it
available all the time.

CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux64_tsan_rel
R=mstarzinger@chromium.org
BUG=v8:4969
LOG=n

Review-Url: https://codereview.chromium.org/1926023002
Cr-Commit-Position: refs/heads/master@{#35918}

Revert of Stop using deprecated hash_map in vtune-jit.cc. (patchset #1 id:1 of https://codereview.chromium.org/1924403002/ )

Reason for revert:
Breaks vtune-jit build, see https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20vtunejit/builds/10670

Original issue's description:
> Stop using deprecated hash_map in vtune-jit.cc.
>
> Fixes https://github.com/nodejs/node/issues/6422.

TBR=jochen@chromium.org,info@bnoordhuis.nl,ben@strongloop.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/1940693002
Cr-Commit-Position: refs/heads/master@{#35917}

Fixes https://github.com/nodejs/node/issues/6422.

Review-Url: https://codereview.chromium.org/1924403002
Cr-Commit-Position: refs/heads/master@{#35916}

Rolling v8/build to 5fbb07a2443f8095963594c2f365f99bad549180

Rolling v8/tools/clang to 0e474b23030b2723dfb3dd0c038746ec2c042469

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review-Url: https://codereview.chromium.org/1941543002
Cr-Commit-Position: refs/heads/master@{#35915}

Restrict the use of the `await` token as an identifier when parsing
source text as module code.

From
http://www.ecma-international.org/ecma-262/6.0/#sec-future-reserved-words:

> 11.6.2.2 Future Reserved Words
>
> The following tokens are reserved for used as keywords in future
> language extensions.
>
> Syntax
>
>     FutureReservedWord ::
>         enum
>         await
>
> await is only treated as a FutureReservedWord when Module is the goal
> symbol of the syntactic grammar.

BUG=v8:4767
LOG=N
R=adamk@chromium.org

Review-Url: https://codereview.chromium.org/1723313002
Cr-Commit-Position: refs/heads/master@{#35914}

AIX returns NULL rather than a valid heap address.

TEST=cctest/test-run-wasm-module/Run_WasmModule_CallAdd_rev
R=titzer@chromium.org, jochen@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1934633002
Cr-Commit-Position: refs/heads/master@{#35913}

I plan to drive these options from the infra recipe.

Raising the priority of the benchmarked process, and fixing
its affinity to some other CPU than 0 improves stability of
measurements.

BUG=

Review-Url: https://codereview.chromium.org/1915303002
Cr-Commit-Position: refs/heads/master@{#35912}

BUG=v8:4972
LOG=N

Review-Url: https://codereview.chromium.org/1925803005
Cr-Commit-Position: refs/heads/master@{#35911}

- Move the concurrent unmapping to MemoryAllocator
- Hide (private) members where possible
- MemoryAllocator:Free is now the bottleneck for freeing
- Pooled pages are either allocated from a set of pooled pages are obtained
  through work stealing from the concurrent unmapper

BUG=chromium:605866, chromium:581412
LOG=N

This reverts commit 25ff296c.

Review-Url: https://codereview.chromium.org/1929503002
Cr-Commit-Position: refs/heads/master@{#35910}

Adapts FastCloneShallowObjectStub to enable it to be used by the
CreateObjectLiteral bytecode.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/1922523002
Cr-Commit-Position: refs/heads/master@{#35909}

BUG=chromium:474921
LOG=n
R=jochen@chromium.org
TBR=jkummerow@chromium.org, jochen@chromium.org

Review URL: https://codereview.chromium.org/1929323002 .

Cr-Commit-Position: refs/heads/master@{#35908}

BUG=chromium:474921
LOG=n
TBR=jochen@chromium.org,jkummerow@chromium.org

Review-Url: https://codereview.chromium.org/1936523002
Cr-Commit-Position: refs/heads/master@{#35907}

In order to have a wasm object (as JSObject), this adds a method to
instantiate the TestingModule. In order for this to work, the bytecode
and the function names of the TestingModule are stored for usage during
instantiation.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/1916403002
Cr-Commit-Position: refs/heads/master@{#35906}

We now store the wasm object and the function index in the
deoptimization data of the wasm Code object, and store an array with
function names in the wasm object.

This will make both the wasm module as well as the respective function
name available from the code object.

Tests will follow in https://codereview.chromium.org/1916403002.

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

Review-Url: https://codereview.chromium.org/1912103002
Cr-Commit-Position: refs/heads/master@{#35905}

This ensures that the TurboFan pipeline is respecting the flag on the
CompilationInfo controlling whether to use the BytecodeGraphBuilder or
the AstGraphBuilder when ensuring deoptimization support.

R=rmcilroy@chromium.org
BUG=chromium:607871
LOG=n

Review-Url: https://codereview.chromium.org/1934563002
Cr-Commit-Position: refs/heads/master@{#35904}

When requesting a large allocation near the end of the address space,
the computation could overflow and erroneously *not* grow the Zone
as required.

BUG=chromium:606115
LOG=y

Review-Url: https://codereview.chromium.org/1930873002
Cr-Commit-Position: refs/heads/master@{#35903}

This will allow us to enable GC events without enabling IC events.
Telemetry currently cannot handle huge number of IC events in a trace.

BUG=

Review-Url: https://codereview.chromium.org/1924333003
Cr-Commit-Position: refs/heads/master@{#35902}

The header / start of the json file was missing before.

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

Review-Url: https://codereview.chromium.org/1928503002
Cr-Commit-Position: refs/heads/master@{#35901}

The output is once per module, and includes the size of relocation information.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/1933513003
Cr-Commit-Position: refs/heads/master@{#35900}

Reland of Remove more dead code after Object.observe removal (patchset #1 id:1 of https://codereview.chromium.org/1929293002/ )

This moves __{define,lookup}{Getter,Setter}__ to builtins.cc.

Compared to the first attempt, this patch now preserves non-spec-compliant legacy behavior and does not throw on failure.

Original review: https://codereview.chromium.org/1904313004

Review-Url: https://codereview.chromium.org/1932163002
Cr-Commit-Position: refs/heads/master@{#35899}

This prepares for pulling chromium's build as dependency for
gn. After this, the files in build and gypfiles need to stay
in sync until chromium is updated.

BUG=chromium:474921
LOG=n

Review-Url: https://codereview.chromium.org/1848553003
Cr-Commit-Position: refs/heads/master@{#35898}

[wasm] Binary 11: Swap the order of section name / section length.
[wasm] Binary 11: Shorter section names.
[wasm] Binary 11: Add a prefix for function type declarations.
[wasm] Binary 11: Function types encoded as pcount, p*, rcount, r*
[wasm] Fix numeric names for functions.

R=rossberg@chromium.org,jfb@chromium.org,ahaas@chromium.org
BUG=chromium:575167
LOG=Y

Review-Url: https://codereview.chromium.org/1896863003
Cr-Commit-Position: refs/heads/master@{#35897}

[wasm] Binary 11: br_table takes a value.
[wasm] Binary 11: Add implicit blocks to if arms.
[wasm] Binary 11: Add arities to call, return, and breaks
[wasm] Binary 11: Add experimental version.

This CL changes the encoder, decoder, and tests to use a postorder
encoding of the AST, which is more efficient in decode time and
space.

R=bradnelson@chromium.org,rossberg@chromium.org,binji@chromium.org
BUG=chromium:575167
LOG=Y

Review-Url: https://codereview.chromium.org/1830663002
Cr-Commit-Position: refs/heads/master@{#35896}

TBR=hablich@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/1929303002
Cr-Commit-Position: refs/heads/master@{#35895}

TBR=hablich@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/1930163003
Cr-Commit-Position: refs/heads/master@{#35894}

BUG=

Review-Url: https://codereview.chromium.org/1925993005
Cr-Commit-Position: refs/heads/master@{#35893}

This adds a dedicated flag for enabling the BytecodeGraphBuilder. The
intention is to be explicit when this variant is being tested and to
avoid unnecessary overhead in production code for a configuration that
is not yet shipping.

R=rmcilroy@chromium.org

Review-Url: https://codereview.chromium.org/1925123002
Cr-Commit-Position: refs/heads/master@{#35892}

The current stub supports everything except JSProxy

BUG=

Review-Url: https://codereview.chromium.org/1924233002
Cr-Commit-Position: refs/heads/master@{#35891}

R=littledan@chromium.org

Review-Url: https://codereview.chromium.org/1926133003
Cr-Commit-Position: refs/heads/master@{#35890}

  port 306c412c (r35833)

  original commit message:
  This is needed by Blink to implement the Custom Elements spec.

BUG=

Review-Url: https://codereview.chromium.org/1928213002
Cr-Commit-Position: refs/heads/master@{#35889}

  port ff19726d (r35818)

  original commit message:
  Refactor the TurboFan pipeline to allow for concurrent recompilation in
  the same way that Crankshaft does it. For now we limit the concurrent
  phases to scheduling, instruction selection, register allocation and
  jump threading.

BUG=

Review-Url: https://codereview.chromium.org/1926383002
Cr-Commit-Position: refs/heads/master@{#35888}

Rolling v8/tools/clang to e18fbfd9a57db60c8667acfc60f5296337c7f4ab

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review-Url: https://codereview.chromium.org/1925193003
Cr-Commit-Position: refs/heads/master@{#35887}

Revert of Remove more dead code after Object.observe removal (patchset #5 id:80001 of https://codereview.chromium.org/1904313004/ )

Reason for revert:
[Sheriff] Looks like this breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/6442

Original issue's description:
> Remove more dead code after Object.observe removal
>
> This moves __{define,lookup}{Getter,Setter}__ to builtins.cc to free up the JavaScript implementation of DefineOwnProperty for deletion.

TBR=verwaest@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/1929293002
Cr-Commit-Position: refs/heads/master@{#35886}

These checks ensure that a TypeError is thrown, per spec, rather than
a runtime assert failure.

BUG=v8:4964
R=adamk
LOG=Y

Review-Url: https://codereview.chromium.org/1929123002
Cr-Commit-Position: refs/heads/master@{#35885}

Review-Url: https://codereview.chromium.org/1919223003
Cr-Commit-Position: refs/heads/master@{#35884}

Do not hold bare pointers to scripts during sampling heap tree construction,
as string conversions may lead to an allocation that in turn could cause GC
which renders all pointers invalid.

Review-Url: https://codereview.chromium.org/1929813002
Cr-Commit-Position: refs/heads/master@{#35883}

Fixes 4 compile errors on Mac due to specifiers not matching type casts.

LOG=N
BUG=

Review-Url: https://codereview.chromium.org/1921483004
Cr-Commit-Position: refs/heads/master@{#35882}

Also revert "[heap] Force inlining of AllocatedSinceLastGC"

This is a speculative revert to see if it actually impacts the benchmarks in
question.

This reverts commit 723e120b.
This reverts commit 08dbdd40.

BUG=chromium:605524
LOG=N
TBR=ulan@chromium.org

Review-Url: https://codereview.chromium.org/1932883002
Cr-Commit-Position: refs/heads/master@{#35881}

This could be the case when running nested message loop
while paused in debugger.

BUG=none
LOG=N

Review-Url: https://codereview.chromium.org/1922703005
Cr-Commit-Position: refs/heads/master@{#35880}

This refines 6382a610 -- as we still
require clean up of the uint index register.

TEST=mjsunit/asm/float32array-negative-offset
R=joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=

Conflicts:
	src/compiler/s390/code-generator-s390.cc

Review-Url: https://codereview.chromium.org/1921073003
Cr-Commit-Position: refs/heads/master@{#35879}