[turbofan] Narrow upper bounds during typed lowering.

This is a temporary solution, which optionally narrows upper bounds of
nodes when changing the operator of a node.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/741503006

Cr-Commit-Position: refs/heads/master@{#25658}

Do not embed function in DirectLoadGlobalFunctionPrototype.

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/778673002

Cr-Commit-Position: refs/heads/master@{#25657}

[turbofan] Reduce context accesses during typed lowering.

TEST=unittests
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/776243002

Cr-Commit-Position: refs/heads/master@{#25656}

Make JSTests ready for Android measurements.

This adds a common perf configuration for JSTests including
Classes, Collections, Iterators and Strings. This allows
the android test runner to handle subdirectories correctly
and to share the base.js resource in the parent directory.

The new json config has added resources configs for the
Android runner.

The perf runner's relative paths on the device are fixed as
well. Resources are only pushed on the configuration node
where they are specified. They are pushed to a dir on the
device that follows the same directory structure as on the
host. The binary is executed in the benchmark folder on the
device like on the host to allow relative path file
loading.

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
TBR=ulan@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/779923002

Cr-Commit-Position: refs/heads/master@{#25655}

Revert of Encode reservation meta data in the snapshot blob. (patchset #3 id:40001 of https://codereview.chromium.org/781443002/)

Reason for revert:
[sheriff] Breaks http://build.chromium.org/p/client.v8/builders/V8-Blink%20Linux%2064/builds/1540

Original issue's description:
> Encode reservation meta data in the snapshot blob.
>
> This also makes reserving multiple chunks per object space possible.
>
> R=vogelheim@chromium.org

TBR=vogelheim@chromium.org,baixo@chromium.org,yangguo@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/780833002

Cr-Commit-Position: refs/heads/master@{#25654}

[x64] check sahf correctly

BUG=

Review URL: https://codereview.chromium.org/777173002

Cr-Commit-Position: refs/heads/master@{#25653}

Encode reservation meta data in the snapshot blob.

This also makes reserving multiple chunks per object space possible.

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/781443002

Cr-Commit-Position: refs/heads/master@{#25652}

Fix path construction in perf runner.

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
TBR=ulan@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/776873005

Cr-Commit-Position: refs/heads/master@{#25651}

Fix Promise.resolve/Promise.reject unnecessarily scheduling a microtask.

R=rossberg@chromium.org, yangguo@chromium.org, adamk@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/777703002

Cr-Commit-Position: refs/heads/master@{#25650}

X87: Use weak cells to embed maps in store handler.

port 3fc9c9b665baaa434c672efcbff632a2eae86f56

original commit message:

  Use weak cells to embed maps in store handler.
  BUG=v8:3629
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/779843002

Cr-Commit-Position: refs/heads/master@{#25649}

X87: CheckPrototypes uses weak cells to embed maps.

port 062a032f50291ce181462226ff41b4ef9b11deba

original commit message:

  CheckPrototypes uses weak cells to embed maps.

BUG=

Review URL: https://codereview.chromium.org/761093004

Cr-Commit-Position: refs/heads/master@{#25648}

MIPS: Use weak cells to embed maps in store handler.

Port 3fc9c9b665baaa434c672efcbff632a2eae86f56

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/762483004

Cr-Commit-Position: refs/heads/master@{#25647}

Reland "[turbofan] Reuse forward fixpoint algorithm in Typer by making it a Reducer."

This reverts commit 918ef9d712ab77bc33ffb8eb985a6fd5672602f6.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/780623002

Cr-Commit-Position: refs/heads/master@{#25646}

MIPS: CheckPrototypes uses weak cells to embed maps.

Port 062a032f50291ce181462226ff41b4ef9b11deba

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/777673002

Cr-Commit-Position: refs/heads/master@{#25645}

Optimize pushing files in android perf test runner.

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
NOTRY=true

Review URL: https://codereview.chromium.org/754463005

Cr-Commit-Position: refs/heads/master@{#25644}

Revert "[turbofan] Reuse forward fixpoint algorithm in Typer by making it a Reducer."

This reverts commit a48ad24a7c258d95acf3a6ae126036953a9122dd.

BUG=

Review URL: https://codereview.chromium.org/763773004

Cr-Commit-Position: refs/heads/master@{#25643}

Move more don't-crankshaft computation to numbering pass

The "do I inline?" decision needs many of the same inputs as the "should
I even try to crankshaft?" decision.  This change consolidates these
checks in the numbering pass.  It also removes the is_generator() check,
as that's already handled when visiting the initial Yield expression.

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/775693003

Cr-Commit-Position: refs/heads/master@{#25642}

MIPS64: [turbofan] Add checked load/store operators.

Port c516d4f09408879602520748333754d3866224fb

BUG=

Review URL: https://codereview.chromium.org/773113005

Cr-Commit-Position: refs/heads/master@{#25641}

Simplify template literal raw string creation

BUG=v8:3710
LOG=Y
R=dslomov@chromium.org, marja@chromium.org

Review URL: https://codereview.chromium.org/768203002

Cr-Commit-Position: refs/heads/master@{#25640}

Use weak cells to embed maps in store handler.

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/774473004

Cr-Commit-Position: refs/heads/master@{#25639}

Prevent redundant node revisit in ControlEquivalence.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/773133003

Cr-Commit-Position: refs/heads/master@{#25638}

Restart idle round on context disposal.

BUG=

Review URL: https://codereview.chromium.org/754363008

Cr-Commit-Position: refs/heads/master@{#25637}

MIPS: Improve pushing arguments on stack.

TEST=
BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/769283002

Cr-Commit-Position: refs/heads/master@{#25636}

MIPS: Fix ambiguous double constant loading after adding checked load/store operators.

The V8_INFINITY macro expands to constant expression of type float.

TEST=mjsunit/constant-folding-2
BUG=
R=balazs.kilvady@imgtec.com

Review URL: https://codereview.chromium.org/779433003

Cr-Commit-Position: refs/heads/master@{#25635}

CheckPrototypes uses weak cells to embed maps.

BUG=v8:3629
LOG=N

Review URL: https://codereview.chromium.org/770373002

Cr-Commit-Position: refs/heads/master@{#25634}

[turbofan] Reuse forward fixpoint algorithm in Typer by making it a Reducer.

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/769303002

Cr-Commit-Position: refs/heads/master@{#25633}

[turbofan] Initial work on cleaning up the Node class.

- Remove use_count_, only used for debug builds and tests.
- Use BitField instead of the unreliable C++ bit fields.
- Improve memory layout.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/780503002

Cr-Commit-Position: refs/heads/master@{#25632}

Print finalize incremental marking event in idle notification.

BUG=

Review URL: https://codereview.chromium.org/775013002

Cr-Commit-Position: refs/heads/master@{#25631}

Slow down incremental marking on main thread when idle notification is active.

BUG=

Review URL: https://codereview.chromium.org/771703004

Cr-Commit-Position: refs/heads/master@{#25630}

Serializer: cache recent back references for shorter encoding.

And some refactorings.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/766893002

Cr-Commit-Position: refs/heads/master@{#25629}

Make test-parsing faster: don't run parsing tests with all experimental flag combinations.

Instead, make it possible for indifidual tests to pass "always true flags" which
are not part of the varying flag set.

The downside is that if an experimental flag changes parsing of some of the
unrelated code snippets, it's noticed later (only after the flag is turned on by
default). But this is a reasonable trade off for faster tests.

Additional fix: Some tests (ErrorsFutureStrictReservedWords) were using
always_flags incorrectly (running two different tests with different
always_flags basically iterates over every flag combination anyway - most of
them twice).

BUG=v8:3707
LOG=N

Review URL: https://codereview.chromium.org/772823002

Cr-Commit-Position: refs/heads/master@{#25628}

[turbofan] Combine additional Word32And with Int32Add and negative power of two.

- (y << L + x) & (-1 << L) => (x & (-1 << L)) + y << L
- (x + y << L) & (-1 << L) => (x & (-1 << L)) + y << L

TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/758603003

Cr-Commit-Position: refs/heads/master@{#25627}

MIPS: [turbofan] Add checked load/store operators.

Port c516d4f09408879602520748333754d3866224fb

Partial port to un-break the build. There are a few failing
tests, and the code is suboptimal for smaller offsets.

Fixes and mips64 port will come in another CL.

BUG=

Review URL: https://codereview.chromium.org/762853004

Cr-Commit-Position: refs/heads/master@{#25626}

Optimize non-mutation Map and Set operations for String keys

Review URL: https://codereview.chromium.org/757143002

Cr-Commit-Position: refs/heads/master@{#25625}

Fix NativesCollection<.>::GetScriptName in natives-external.cc

As there's no associated bug, here's the issue:
- Some ES6 functionality in Chrome is presently broken; this fixes it.
- The natives (built-in libraries) can be accessed by their 'name'.
  This is used to active ES6 flags.
- Strangely enough, there's an id and a name, where the name is derived
  from the id as "native %s.js", with %s for the id.
- NativesCollection<.>::GetScriptName uses the name.
- NativesCollection<.>::GetIndex uses the id.
- Example:
  NativesCollection<EXPERIMENTAL>::GetIndex("harmony-string") -> 3
  NativesCollection<EXPERIMENTAL>::GetScriptName(3) -> "native harmony-string.js"
- Nobody knows why; it's quite mysterious.
- When introducing the "external startup data", I didn't fully understand this
  and used the id in both places.
- When the "external startup data" was turned on in Chrome, ES6 features broke
  in Chrome since the libraries could no longer be found.
- This CL fixes this and makes the external startup data behave just like the
  built-in version.

R=dslomov
BUG=

Review URL: https://codereview.chromium.org/774613003

Cr-Commit-Position: refs/heads/master@{#25624}

[turbofan] Enable DivIsSafe flag for arm64.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/773803003

Cr-Commit-Position: refs/heads/master@{#25623}

Switch CFGBuilder to use NodeMarker.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/753063004

Cr-Commit-Position: refs/heads/master@{#25622}

Restrict floating control to minimal control-connected component.

R=jarin@chromium.org
TEST=cctest/test-scheduler/NestedFloatingDiamondWithChain

Review URL: https://codereview.chromium.org/738613005

Cr-Commit-Position: refs/heads/master@{#25621}

Make generic algorithm a little less generic.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/760493003

Cr-Commit-Position: refs/heads/master@{#25620}

[ia32] Introduce FMA3 instructions on scalar data elements.

port 83a635e0d70f144300ea83be0d7effc1eb1bf6ef

BUG=

Review URL: https://codereview.chromium.org/773783002

Cr-Commit-Position: refs/heads/master@{#25619}

Trace how long it takes to compute the weak closure during mark-compact

BUG=none
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/769253002

Cr-Commit-Position: refs/heads/master@{#25618}

Stage ES6 classes and object literal extensions.

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:3330
LOG=Y

Review URL: https://codereview.chromium.org/774653002

Cr-Commit-Position: refs/heads/master@{#25617}

Clean up node iteration

- Create a first-class Edge type.
- Separate node and edge iterators
- Make iterators only responsible for iteration
- Make it possible to modify the use edge iterator while iterating.
- Add the ability to update inputs to Edges directly.

Review URL: https://codereview.chromium.org/765983002

Cr-Commit-Position: refs/heads/master@{#25616}

Reland parts of 'Use weak cells in map checks in polymorphic ICs'

This relands macroassembler instructions and weak cell caching and
does not include parts that caused "Linux ASan LSan" test failures.

BUG=v8:3663
LOG=N

Review URL: https://codereview.chromium.org/764003003

Cr-Commit-Position: refs/heads/master@{#25615}

Add Android platform to performance runner.

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
NOTRY=true

Review URL: https://codereview.chromium.org/768143002

Cr-Commit-Position: refs/heads/master@{#25614}

Fixed environment handling for LFlooringDivI on ARM.

Beautiful code... :-}

BUG=chromium:437765
LOG=y

Review URL: https://codereview.chromium.org/775613002

Cr-Commit-Position: refs/heads/master@{#25613}

Make the ParserSync test faster (and re-enable it).

Most of the run time came from testing with all possible flag combinations. None
of the flags passed affect the test, and there are specialized tests for testing
the features behind the flags; no need to slow down the generic test.

With these changes, run time for debug build goes from 186 s to 0.5 s.

In addition, fixed some missing commas between the test cases.

R=svenpanne@chromium.org
BUG=v8:3707
LOG=N

Review URL: https://codereview.chromium.org/766673003

Cr-Commit-Position: refs/heads/master@{#25612}

[turbofan] Use the temporary zone for the VN cache.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/760403003

Cr-Commit-Position: refs/heads/master@{#25611}

[turbofan] Cache the Branch operator(s).

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/771153002

Cr-Commit-Position: refs/heads/master@{#25610}

[turbofan] Cache the JSStoreProperty operator(s).

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/769193003

Cr-Commit-Position: refs/heads/master@{#25609}

Restore correct logic in GC test.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/767453004

Cr-Commit-Position: refs/heads/master@{#25608}

Perform smaller marking steps incrementally in idle notification.

BUG=

Review URL: https://codereview.chromium.org/767233003

Cr-Commit-Position: refs/heads/master@{#25607}

After moving unreachable weak global handles only process harmony collections

Groups and implicit references are no longer relevant at this point.

Also add tests that fail if the first or second round of ephemeral
marking is omitted

BUG=none
R=mstarzinger@chromium.org,hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/761343004

Cr-Commit-Position: refs/heads/master@{#25606}

[turbofan] Add missing tests for SimplifiedOperatorBuilder.

TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/772723003

Cr-Commit-Position: refs/heads/master@{#25605}

[turbofan] Enable stage 1.

R=danno@chromium.org,bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/770203003

Cr-Commit-Position: refs/heads/master@{#25604}

ES6 unicode extensions, part 1.

Allows \u{xxxxx} in variable names and string literals (not yet in regexps).

Everything's behind the --harmony-unicode flag.

BUG=

Review URL: https://codereview.chromium.org/716423002

Cr-Commit-Position: refs/heads/master@{#25603}

[turbofan] Initialize less frequently used types in typer.cc lazily.

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/771683002

Cr-Commit-Position: refs/heads/master@{#25602}

Parser: Removing debug code.

The mystery crash never reappeared once the debugging code was in place.

R=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/760863003

Cr-Commit-Position: refs/heads/master@{#25601}

[turbofan] Make context specialization into a reducer.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/771713002

Cr-Commit-Position: refs/heads/master@{#25600}

Fix idle time trace printing.

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/771123002

Cr-Commit-Position: refs/heads/master@{#25599}

Add GetIdentityHash to v8::Name object API

v8::Object already has GetIdentityHash on it. This change adds its counterpart to v8::Name.

BUG=chromium:437416
LOG=Y

Review URL: https://codereview.chromium.org/753373003

Cr-Commit-Position: refs/heads/master@{#25598}

Revert of Use weak cells in map checks in polymorphic ICs. (patchset #8 id:140001 of https://codereview.chromium.org/753993003/)

Reason for revert:
[Sheriff] Speculative revert for breaking chromium asan (roll blocker):
http://build.chromium.org/p/client.v8/builders/Linux%20ASan%20LSan%20Tests%20%281%29/builds/1683

Original issue's description:
> Use weak cells in map checks in polymorphic ICs.
>
> BUG=v8:3663
> LOG=N

TBR=mvstanton@chromium.org,akos.palfi@imgtec.com,weiliang.lin@intel.com,ulan@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=v8:3663

Review URL: https://codereview.chromium.org/771033003

Cr-Commit-Position: refs/heads/master@{#25597}

Revert of MIPS: Use weak cells in map checks in polymorphic ICs. (patchset #1 id:1 of https://codereview.chromium.org/767623003/)

Reason for revert:
Need to revert the ported CL:
https://codereview.chromium.org/771033003/

Original issue's description:
> MIPS: Use weak cells in map checks in polymorphic ICs.
>
> Port 45a36948e1bb0f02d395ecbcfe6306553898268b
>
> Fix typo in the mips ports.
>
> BUG=

TBR=ulan@chromium.org,danno@chromium.org,akos.palfi@imgtec.com,balazs.kilvady@imgtec.com,gergely.kis@imgtec.com,dusan.milosavljevic@imgtec.com,paul.lind@imgtec.com
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/768303002

Cr-Commit-Position: refs/heads/master@{#25596}

[ia32] Introduce vex prefix version of float64 arithmetic binop

port 50c4d8826b838596cda892d76ec84eb7a0eab9c1

BUG=

Review URL: https://codereview.chromium.org/770183002

Cr-Commit-Position: refs/heads/master@{#25595}

[turbofan] Workaround inconsistency of the type system.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/770193002

Cr-Commit-Position: refs/heads/master@{#25594}

Get rid of the unused __my_bool__ macro.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/770163002

Cr-Commit-Position: refs/heads/master@{#25593}

Set V8_CC_GNU or V8_CC_MSVC for clang in gcc / cl mode.

Also, remove V8_CC_CLANG since it's not read anywhere (and ideally shouldn't
be).

Clang tries to be compatible with gcc in clang mode, and with msvc in clang-cl
mode. It wants to go down the same code paths that these compilers want to go
down in most cases.

For example, V8PRIxPTR was set incorrectly on Windows 64-bit before this change
since macros.h assumed that checking for V8_CC_MSVC is enough to find LLP64
systems, but V8_CC_MSVC wasn't set for clang.  Most other existing checks for
V8_CC_MSVC should be taken for clang-cl too (and for the remaining ones,
clang-cl is happy with either code path).

Likewise, V8_IMMEDIATE_CRASH is currently set to a suboptimal value with clang
since __builtin_trap() is only used if V8_CC_GNU is set.

Including clang in the gcc and cl macros is also what chromium does.

BUG=chromium:82385
LOG=y

Review URL: https://codereview.chromium.org/757553004

Cr-Commit-Position: refs/heads/master@{#25592}

[turbofan] Add checked load/store operators.

TEST=mjsunit,cctest,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/763963002

Cr-Commit-Position: refs/heads/master@{#25591}

MIPS: Use weak cells in map checks in polymorphic ICs.

Port 45a36948e1bb0f02d395ecbcfe6306553898268b

Fix typo in the mips ports.

BUG=

Review URL: https://codereview.chromium.org/767623003

Cr-Commit-Position: refs/heads/master@{#25590}

harmony-classes: Fix some issues with syntactic restriction on super(...).

R=arv@chromium.org
BUG=v8:3330
LOG=N

Review URL: https://codereview.chromium.org/770843002

Cr-Commit-Position: refs/heads/master@{#25589}

Use just one marking deque.

BUG=

Review URL: https://codereview.chromium.org/770453003

Cr-Commit-Position: refs/heads/master@{#25588}

[turbofan] Add a PhaseScope for initialization.

R=dcarney@chromium.org
BUG=

Review URL: https://codereview.chromium.org/773443002

Cr-Commit-Position: refs/heads/master@{#25587}

Improved Makefile.android's readability a bit.

Review URL: https://codereview.chromium.org/770783003

Cr-Commit-Position: refs/heads/master@{#25586}

Do not call Heap::IterateAndMarkPointersToFromSpace() for unboxed double fields.

BUG=chromium:437143
LOG=N

Review URL: https://codereview.chromium.org/768113002

Cr-Commit-Position: refs/heads/master@{#25585}

Android ARM: enable PIE.

BUG=

Review URL: https://codereview.chromium.org/757103003

Cr-Commit-Position: refs/heads/master@{#25584}

[turbofan] NodeMarker in ControlReducer.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/767743003

Cr-Commit-Position: refs/heads/master@{#25583}

[x64] introduce vex prefix version of float64 arithmetic binop

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/764863002

Patch from Weiliang Lin <weiliang.lin@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25582}

Use weak cells in map checks in polymorphic ICs.

BUG=v8:3663
LOG=N

Review URL: https://codereview.chromium.org/753993003

Cr-Commit-Position: refs/heads/master@{#25581}

[turbofan]: Use "leal" more prevasively on x64

Only use "addl" and "subl" in cases that have been measured to be
faster (currently only immediate operations).

Review URL: https://codereview.chromium.org/735293004

Cr-Commit-Position: refs/heads/master@{#25580}

Fix clang++ warnings on -Wtautological-constant-out-of-range-compare

BUG=v8:3730
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/750093003

Cr-Commit-Position: refs/heads/master@{#25579}

Make sure we have non-zero idle time even after rounding to size_t

BUG=v8:3728
R=machenbach@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/764263002

Cr-Commit-Position: refs/heads/master@{#25578}

Introduce a kill-switch for shipping features.

R=rossberg@chromium.org
TBR=hpayer@chromium.org

Committed: https://chromium.googlesource.com/v8/v8/+/d6285620868b15c84eb9affa59f6b4e869f074b8

Review URL: https://codereview.chromium.org/763273002

Cr-Commit-Position: refs/heads/master@{#25577}

Abstract platform in perf runner.

This is basically a refactoring that extracts desktop
specific code into a separate class.

Also adds flags for android runs (not used yet).

BUG=chromium:374740
LOG=n
TEST=python -m unittest run_perf_test
NOTRY=true

Review URL: https://codereview.chromium.org/762163002

Cr-Commit-Position: refs/heads/master@{#25576}

Remove deprecated NodeData class.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/768853002

Cr-Commit-Position: refs/heads/master@{#25575}

Revert of Introduce a kill-switch for shipping features. (patchset #2 id:20001 of https://codereview.chromium.org/763273002/)

Reason for revert:
Reverted for breaking nosnap: http://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux%20-%20nosnap/builds/1003/steps/Check/logs/Threading3

Original issue's description:
> Introduce a kill-switch for shipping features.
>
> R=rossberg@chromium.org
>
> Committed: https://chromium.googlesource.com/v8/v8/+/d6285620868b15c84eb9affa59f6b4e869f074b8

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

Review URL: https://codereview.chromium.org/763353002

Cr-Commit-Position: refs/heads/master@{#25574}

Stage @@toStringTag (--harmony-tostring)

R=rossberg@chromium.org,caitpotter88@gmail.com
LOG=Y

Review URL: https://codereview.chromium.org/768833002

Cr-Commit-Position: refs/heads/master@{#25573}

De-generify the GenericNode.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/756073004

Cr-Commit-Position: refs/heads/master@{#25572}

Expose generator object internal properties via mirrors.

BUG=v8:3292
R=yangguo@chromium.org, wingo@igalia.com
LOG=N

Review URL: https://codereview.chromium.org/760303002

Cr-Commit-Position: refs/heads/master@{#25571}

Introduce a kill-switch for shipping features.

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/763273002

Cr-Commit-Position: refs/heads/master@{#25570}

De-generify the GenericGraph.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/767733002

Cr-Commit-Position: refs/heads/master@{#25569}

MIPS64: Fix MULT in simulator to conform the spec.

TEST=mjsunit/numops-fuzz-part4
BUG=
R=balazs.kilvady@imgtec.com

Review URL: https://codereview.chromium.org/756073003

Cr-Commit-Position: refs/heads/master@{#25568}

[turbofan] Add NodeMarker and use it in the GraphReducer.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/768763002

Cr-Commit-Position: refs/heads/master@{#25567}

Serializer: use opcode to signal new chunk.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/757813003

Cr-Commit-Position: refs/heads/master@{#25566}

Remove deprecated pieces from generic algorithm.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/752263003

Cr-Commit-Position: refs/heads/master@{#25565}

Use incremental marking deque in idle notification.

BUG=

Review URL: https://codereview.chromium.org/766663006

Cr-Commit-Position: refs/heads/master@{#25564}

Make resources config ready for android test runner.

This switches off the resources feature. It will be solely
used for configuring files to be copied to android devices
in a follow up CL.

TBR=svenpanne@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/764013002

Cr-Commit-Position: refs/heads/master@{#25563}

add fast path for hashing small cons strings

R=yangguo@chromium.org
LOG=N

BUG=437280

Review URL: https://codereview.chromium.org/769453002

Cr-Commit-Position: refs/heads/master@{#25562}

Remove duplicate code for searching SharedFunctionInfo.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/762123002

Cr-Commit-Position: refs/heads/master@{#25561}

Use deadline in IdleNotification.

BUG=417668
LOG=n

Review URL: https://codereview.chromium.org/750813003

Cr-Commit-Position: refs/heads/master@{#25560}

Add test flags feature to perf runner.

TBR=svenpanne@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/722023006

Cr-Commit-Position: refs/heads/master@{#25559}