BUG=chromium:607115
LOG=n

Review-Url: https://codereview.chromium.org/1928903002
Cr-Commit-Position: refs/heads/master@{#35855}

TEST=mjsunit/asm/embenchen/zlib
BUG=

Review-Url: https://codereview.chromium.org/1925543003
Cr-Commit-Position: refs/heads/master@{#35854}

R=ulan@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1918403003
Cr-Commit-Position: refs/heads/master@{#35853}

Flat cons-strings point directly to the internalized version of the string. This makes reinternalization much faster.

BUG=

Review-Url: https://codereview.chromium.org/1932663002
Cr-Commit-Position: refs/heads/master@{#35852}

Revert of [ignition] Inline the binary op TurboFan code stubs in the bytecode handlers. (patchset #4 id:60001 of https://codereview.chromium.org/1902823002/ )

Reason for revert:
Caused a performance regression in TurboFan and did not improve in a significant way Ignition's performances.

Original issue's description:
> [ignition] Inline the binary op TurboFan code stubs in the bytecode handlers.
>
> Adds a Generate method to the stubs that can be used to embed the graph directly in the bytecode handlers.
>
> Committed: https://crrev.com/e8caf78ff2a9f7d50ac9b47f6b4c80f92b69914a
> Cr-Commit-Position: refs/heads/master@{#35696}

TBR=bmeurer@chromium.org,rmcilroy@chromium.org,machenbach@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/1927873002
Cr-Commit-Position: refs/heads/master@{#35851}

This fixes a bug where the iterable's .return method gets called when it
shouldn't.

R=littledan@chromium.org
BUG=v8:4952
LOG=n

Review-Url: https://codereview.chromium.org/1927073002
Cr-Commit-Position: refs/heads/master@{#35850}

NOTRY=true
TBR=machenbach@chromium.org
BUG=v8:4961
LOG=N

Review-Url: https://codereview.chromium.org/1928893002
Cr-Commit-Position: refs/heads/master@{#35849}

This is a preparatory change to only use the class in question when
allocating a CompilationInfo on the C-heap for a compilation job. As a
next step we will make CompilationInfoWithZone disappear and make the
CompilationJob be the one C-heap allocated object.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1931573003
Cr-Commit-Position: refs/heads/master@{#35848}

Remove a couple of variables that are written but not read.

BUG=

Review-Url: https://codereview.chromium.org/1923913002
Cr-Commit-Position: refs/heads/master@{#35847}

BUG=v8:4932
LOG=n

Review-Url: https://codereview.chromium.org/1929853002
Cr-Commit-Position: refs/heads/master@{#35846}

TBR=machenbach@chromium.org
BUG=v8:4961
LOG=N
NOTRY=true

Review-Url: https://codereview.chromium.org/1924093004
Cr-Commit-Position: refs/heads/master@{#35845}

BUG=chromium:607226, chromium:581412
LOG=N

Review-Url: https://codereview.chromium.org/1928883002
Cr-Commit-Position: refs/heads/master@{#35844}

It's more readable than the construction
Vector<T>(buffer, arraysize(buffer)).
All those places are now replaced by ArrayVector(buffer).

R=titzer@chromium.org, jarin@chromium.org, rossberg@chromium.org

Review-Url: https://codereview.chromium.org/1916393002
Cr-Commit-Position: refs/heads/master@{#35843}

R=machenbach@chromium.org
BUG=v8:4961
NOTRY=true
LOG=N
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/1915033008
Cr-Commit-Position: refs/heads/master@{#35842}

Currently we already have tools to extract C++ symbols of d8, and output the
statistics result. This patch creates two scripts, one is to use exsisting tools
to extract C++ symbols and dump to output, the other collects all symbols and
merges them into v8 log. The format of C++ symbols in v8 log is:

cpp,start_address,size,symbol_name

BUG=v8:4906
LOG=n

Review-Url: https://codereview.chromium.org/1884493003
Cr-Commit-Position: refs/heads/master@{#35841}

R=mstarzinger@chromium.org
BUG=v8:4690
LOG=N

Review-Url: https://codereview.chromium.org/1921853005
Cr-Commit-Position: refs/heads/master@{#35840}

Rolling v8/buildtools to cdbd50759bf2289d2c9d3f1f7d02239b4b4b1209

Rolling v8/tools/clang to 4652e9c8cea11f68101411f5826eca51b4838eda

Rolling v8/tools/gyp to e24c83726b7294179f479a683eeb351568fcc4ee

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

Review-Url: https://codereview.chromium.org/1926883003
Cr-Commit-Position: refs/heads/master@{#35839}

Port 306c412c

Original commit message:

    This is needed by Blink to implement the Custom Elements spec.

R=adamk@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:4261
LOG=N

Review-Url: https://codereview.chromium.org/1929703002
Cr-Commit-Position: refs/heads/master@{#35838}

Return the empty string from StringPad if the filler argument is the empty
string, effectively returning the string unchanged in StringPadStart and
StringPadEnd.

```
"foo".padStart(100000, "") -> "foo"
```

BUG=v8:4957, v8:4954
LOG=N
R=littledan@chromium.org

Review-Url: https://codereview.chromium.org/1926773003
Cr-Commit-Position: refs/heads/master@{#35837}

BUG=v8:4954
LOG=Y
R=littledan@chromium.org

Review-Url: https://codereview.chromium.org/1932453002
Cr-Commit-Position: refs/heads/master@{#35836}

The legacy function declaration locations from Annex B 3.2 and 3.4 do not
apply for generator declarations. This patch cracks down on those usages,
which is tested for by new incoming test262 tests.

BUG=v8:4824
LOG=Y
R=adamk

Review-Url: https://codereview.chromium.org/1900033003
Cr-Commit-Position: refs/heads/master@{#35835}

The status FAILED and BAILED_OUT only distinguishes between whether an
exception is pending or not. Such a distinction is obsolete by now as
all callers check for pending exceptions directly. Also it is impossible
for any concurrent part of the job to actually set a pending exception,
hence even the assertion that the concurrent part does not return FAILED
is obsolete.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1926693003
Cr-Commit-Position: refs/heads/master@{#35834}

This is needed by Blink to implement the Custom Elements spec.

BUG=v8:4261
LOG=y

Review-Url: https://codereview.chromium.org/1910253005
Cr-Commit-Position: refs/heads/master@{#35833}

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1925743002
Cr-Commit-Position: refs/heads/master@{#35832}

This moves the common code for allocating a compilation job into one
single place in the compilation pipeline. This will make it easier to
reason about involved lifetimes.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1923293002
Cr-Commit-Position: refs/heads/master@{#35831}

Now that the GC team has landed the appropriate changes to ensure that the top
page of the address space is never used for allocation, the inlined fast-case
allocation path in the CodeAssembler can be micro-optimized to an add to top
followed by an unsigned compare to limit, eliding a no-longer-needed overflow
check.

Review-Url: https://codereview.chromium.org/1923803003
Cr-Commit-Position: refs/heads/master@{#35830}

Port ef49c6b1

Original commit message:

    Default (and only way) is now to retrieve a tagged object.

R=mlippautz@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=chromium:606711
LOG=N

Review-Url: https://codereview.chromium.org/1917353002
Cr-Commit-Position: refs/heads/master@{#35829}

This addresses Cortex-A53 errata 819472, 826319, 827319 and 824069.

Note that using "civac" rather than "cvau" doesn't appear to affect
performance at all.

BUG=

Review-Url: https://codereview.chromium.org/1921173004
Cr-Commit-Position: refs/heads/master@{#35828}

This makes sure that the testing pipeline withing the FunctionTester
class only performs AST analysis and deoptimization preparation when
graphs are generated from the AST (as opposed to from bytecode).

R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/1928523002
Cr-Commit-Position: refs/heads/master@{#35827}

Useful for inspecting constant fields in objects.

BUG=
R=machenbach

Review-Url: https://codereview.chromium.org/1922903003
Cr-Commit-Position: refs/heads/master@{#35826}

BUG=chromium:605349
LOG=NO

Review URL: https://codereview.chromium.org/1921213004

Cr-Commit-Position: refs/heads/master@{#35825}

Trace-opt/trace-deopt output is ambiguous if multiple functions share
the same name. This change adds file names to this output behind the
--trace-file-names flag to reduce this ambiguity.

R=ofrobots@google.com
BUG=

Review URL: https://codereview.chromium.org/1920873003

Cr-Commit-Position: refs/heads/master@{#35824}

BUG=

Review URL: https://codereview.chromium.org/1926493003

Cr-Commit-Position: refs/heads/master@{#35823}

BUG=v8:4915
LOG=Y

Review URL: https://codereview.chromium.org/1914423002

Cr-Commit-Position: refs/heads/master@{#35822}

The change removes threading information from the JSON debug API, which
is deprecated anyways.

R=cbruni@chromium.org

Review URL: https://codereview.chromium.org/1924743002

Cr-Commit-Position: refs/heads/master@{#35821}

This is necessary to eventually build a turbofan graph.

BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1901713003

Cr-Commit-Position: refs/heads/master@{#35820}

Revert of [heap] Uncommit pooled pages concurrently (patchset #5 id:120001 of https://codereview.chromium.org/1913083002/ )

Reason for revert:
Creates a spike of OOM(v8) crashers on Win32.

Original issue's description:
> [heap] Uncommit pooled pages concurrently
>
> - 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
>
> Committed: https://crrev.com/2158df87116906160cebc3ad20c97f454822da03
> Cr-Commit-Position: refs/heads/master@{#35797}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:605866, chromium:581412

Review URL: https://codereview.chromium.org/1925563003

Cr-Commit-Position: refs/heads/master@{#35819}

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.

R=mstarzinger@chromium.org, ahaas@chromium.org, jarin@chromium.org

Review URL: https://codereview.chromium.org/1179393008

Cr-Commit-Position: refs/heads/master@{#35818}

Uses now the same location chromium uses and which some tools
expect.

BUG=chromium:474921
LOG=n

Review URL: https://codereview.chromium.org/1929473002

Cr-Commit-Position: refs/heads/master@{#35817}

This commit introduces IgnitionStatisticsExtension, which provides
methods for accessing Ignition statistics and counters from JavaScript.

The extension is registered when FLAG_ignition and
FLAG_trace_ignition_dispatches are both enabled.

For the moment, the only exposed function is
getIgnitionDispatchCounters(), which allows to retrieve Ignition
dispatch counters as a JavaScript object.

BUG=v8:4899
LOG=N

Review URL: https://codereview.chromium.org/1899133004

Cr-Commit-Position: refs/heads/master@{#35816}