This adds ignition to the testing variants that are run on all
bots.

Failing tests can only be skipped with the NO_IGNITION
keyword in status files. Existing expectations for the
ignition_turbofan variant are all duplicated and use the
NO_IGNITION keyword as well now.

BUG=v8:4280
LOG=N
NOTRY=true

Review-Url: https://codereview.chromium.org/1804003002
Cr-Commit-Position: refs/heads/master@{#35865}

DevTools uses the debug interrupt to trap on function entry. Without
source position at the stack check, we would get bogus source positions.

R=mstarzinger@chromium.org
BUG=chromium:595646
LOG=N

Review-Url: https://codereview.chromium.org/1925063002
Cr-Commit-Position: refs/heads/master@{#35864}

Revert of [turbofan] Run everything after representation selection concurrently. (patchset #2 id:20001 of https://codereview.chromium.org/1926023002/ )

Reason for revert:
[Sheriff] Flaky crashed here and there:
https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/9867
https://build.chromium.org/p/client.v8/builders/V8%20Linux64/builds/9589
https://build.chromium.org/p/client.v8/builders/V8%20Mac/builds/7679

Original issue's description:
> [turbofan] Run everything after representation selection concurrently.
>
> 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.

TBR=mstarzinger@chromium.org,bmeurer@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/1925073002
Cr-Commit-Position: refs/heads/master@{#35863}

- Move the check from the BytecodeArrayBuilder destructor, which doesn't get
  called, to the ToBytecodeArray function.
- Remove the now empty destructor.
- For generators, bind unused resume point labels somewhere.

R=rmcilroy@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1924093005
Cr-Commit-Position: refs/heads/master@{#35862}

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.

Review-Url: https://codereview.chromium.org/1926023002
Cr-Commit-Position: refs/heads/master@{#35861}

BUG=chromium:606898
LOG=n

Review-Url: https://codereview.chromium.org/1932703002
Cr-Commit-Position: refs/heads/master@{#35860}

We effectively have 4 different cases to deal with, including the default, but on some platform where we emit the jump table inline (e.g. arm64) we end up emitting an unconditional jump to the same address 127 times.

BUG=

Review-Url: https://codereview.chromium.org/1765883002
Cr-Commit-Position: refs/heads/master@{#35859}

R=machenbach@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/1927083002
Cr-Commit-Position: refs/heads/master@{#35858}

BUG=v8:4947
LOG=Y

Review-Url: https://codereview.chromium.org/1919673006
Cr-Commit-Position: refs/heads/master@{#35857}

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

Review-Url: https://codereview.chromium.org/1925993002
Cr-Commit-Position: refs/heads/master@{#35856}

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}