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}

Fix candidate lookup in auto push script.

NOTRY=true
BUG=chromium:431669
LOG=n
TBR=jkummerow@chromium.org
TEST=./script_test.py

Review URL: https://codereview.chromium.org/765943002

Cr-Commit-Position: refs/heads/master@{#25558}

Fix nosnap build

TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/762083002

Cr-Commit-Position: refs/heads/master@{#25557}

X87: Flesh out vector ic state query and set mechanisms.

port c142994f742b52cd59aa15d0961d4b0034bcbf88

original commit message:

    Flesh out vector ic state query and set mechanisms.

    The IC system now fully integrates the vector concept and can
    handle loads and keyed loads vector-based.

BUG=

Review URL: https://codereview.chromium.org/763953002

Cr-Commit-Position: refs/heads/master@{#25556}

harmony-classes: Implement 'super(...)' call syntactic restriction.

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

Review URL: https://codereview.chromium.org/766663003

Cr-Commit-Position: refs/heads/master@{#25555}

MIPS: Flesh out vector ic state query and set mechanisms.

Port c142994f742b52cd59aa15d0961d4b0034bcbf88

Original commit message:
The IC system now fully integrates the vector concept and can
handle loads and keyed loads vector-based.

BUG=
R=akos.palfi@imgtec.com

Review URL: https://codereview.chromium.org/752553005

Patch from Balazs Kilvady <balazs.kilvady@imgtec.com>.

Cr-Commit-Position: refs/heads/master@{#25554}

Set clang directory in gyp.

BUG=

Review URL: https://codereview.chromium.org/764803002

Cr-Commit-Position: refs/heads/master@{#25553}

Flesh out vector ic state query and set mechanisms.

The IC system now fully integrates the vector concept and can
handle loads and keyed loads vector-based.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/754303003

Cr-Commit-Position: refs/heads/master@{#25552}

[turbofan] Avoid repeatedly revisiting inputs in GraphReducer.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/753073009

Cr-Commit-Position: refs/heads/master@{#25551}

Set @@toStringTag on GeneratorFunction prototype.

R=caitpotter88@gmail.com
BUG=v8:3502
LOG=N

Review URL: https://codereview.chromium.org/764823002

Cr-Commit-Position: refs/heads/master@{#25550}

Make TemplateLiteral hashing algorithm more memory efficient

Previously, a separate string to be hashed (in order to help determine the need to
use a cached Template Call Site) was built up by joining UTF8 spans within a template.

Now, the hash key is generated from the original spans, removing the need to allocate a new
buffer and copy bytes into it.

BUG=

Review URL: https://codereview.chromium.org/765473006

Cr-Commit-Position: refs/heads/master@{#25549}

Remove deprecated constant helpers from JSGenericLowering.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/761143002

Cr-Commit-Position: refs/heads/master@{#25548}

Fix reduction result for branches in generic lowering.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/750333003

Cr-Commit-Position: refs/heads/master@{#25547}

Just account for context disposal garbage collections in context disposal stats counters.

BUG=

Review URL: https://codereview.chromium.org/765773002

Cr-Commit-Position: refs/heads/master@{#25546}

Re-land: Distinguish beween final incremental mark-compact and full mark-compact event in IdleNotification.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/765743002

Cr-Commit-Position: refs/heads/master@{#25545}

Just finalize incremental marking when marking is done in idle notification.

BUG=

Review URL: https://codereview.chromium.org/733893003

Cr-Commit-Position: refs/heads/master@{#25544}

Start immediate dominator propagation at entry to floating control.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/761673004

Cr-Commit-Position: refs/heads/master@{#25543}

Switch backedge table in scheduler to use ZoneVector.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/761733002

Cr-Commit-Position: refs/heads/master@{#25542}

MIPS: harmony-scoping: make assignment to 'const' a late error.

Port 6ac4de87a8b01500b066a3e401e921d2d84b42db

Original commit message:
Per TC39 Nov 2014 decision.

This patch also changes behavior for "legacy const": assignments to sloppy const in strict mode is now also a type error. This fixes v8:2243 and also brings us in compliance with other engines re assignment to function names (see updated webkit test), but might have bigger implications.
That change can easily be reverted by changing Variable::IsSignallingAssignmentToConst.

BUG=v8:3713,v8:2243
LOG=N

Review URL: https://codereview.chromium.org/766703002

Cr-Commit-Position: refs/heads/master@{#25541}

Introduce a new growth criterion for the new space behind a flag

With this flag, we grow if more than 10% survived the last scavenge.

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

Review URL: https://codereview.chromium.org/753543002

Cr-Commit-Position: refs/heads/master@{#25540}

Just print interesting idle notification events in --trace-idle-notification.

BUG=

Review URL: https://codereview.chromium.org/763063002

Cr-Commit-Position: refs/heads/master@{#25539}

Add support for downloading clang

Still requires changes to gyp files to select the built-in clang as
compiler and make clang the default on the platforms we want it.

BUG=
R=dcarney@chromium.org,machenbach@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/745963005

Cr-Commit-Position: refs/heads/master@{#25538}

Add interceptor support for symbols

a revival of https://codereview.chromium.org/467013003

R=rossberg@chromium.org

BUG=

Review URL: https://codereview.chromium.org/760883002

Cr-Commit-Position: refs/heads/master@{#25537}

Ship harmony-strings

R=rossberg@chromium.org, yangguo@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/761913002

Cr-Commit-Position: refs/heads/master@{#25536}

Fast-to-slow migration should wipe out in-object space if it exists in the object after migration.

BUG=chromium:436816
LOG=N

Review URL: https://codereview.chromium.org/765473004

Cr-Commit-Position: refs/heads/master@{#25535}

Ensure double alignment when deserializing.

R=rmcilroy@chromium.org
BUG=chromium:436510
LOG=N
TEST=compile with V8_OOL_CONSTANT_POOL=1, run d8 with --verify-heap --test

Review URL: https://codereview.chromium.org/759823006

Cr-Commit-Position: refs/heads/master@{#25534}

[turbofan] add initial move optimizer

R=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/750813004

Cr-Commit-Position: refs/heads/master@{#25533}

X87: harmony-scoping: make assignment to 'const' a late error.

port 6ac4de87a8b01500b066a3e401e921d2d84b42db

original commit message:
  harmony-scoping: make assignment to 'const' a late error.

  Per TC39 Nov 2014 decision. This patch also changes behavior for "legacy const":
  assignments to sloppy const in strict mode is now also a type error. This fixes
  v8:2243 and also brings us in compliance with other engines re assignment to function
  names (see updated webkit test), but might have bigger implications. That change can
  easily be reverted by changing Variable::IsSignallingAssignmentToConst.

BUG=
R=dslomov@chromium.org, weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/763033002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

Cr-Commit-Position: refs/heads/master@{#25532}

Move linked list for RPO order into BasicBlock itself.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/762723004

Cr-Commit-Position: refs/heads/master@{#25531}

Map::CopyGeneralizeAllRepresentations() left incorrect layout descriptor in a new map.

BUG=chromium:436820
LOG=N

Review URL: https://codereview.chromium.org/759823004

Cr-Commit-Position: refs/heads/master@{#25530}

Fix raw TemplateLiteral spans with non-ascii characters

BUG=v8:3710

Review URL: https://codereview.chromium.org/745233002

Cr-Commit-Position: refs/heads/master@{#25529}

Abort optimization in corner case.

The %OptimizeFunctionOnNextCall sledgehammer can cause a function to be
marked for optimization before it's ever been compiled by fullcode.
This can lead to the situation where a function doesn't have optimization
disabled until we try to compile it optimized.

Basically, the assert should just handle this case more gracefully.

R=yangguo@chromium.org
BUG=436893
LOG=Y

Review URL: https://codereview.chromium.org/760063002

Cr-Commit-Position: refs/heads/master@{#25528}

Do not try to inline if the function has an illegal redeclaration.

R=mvstanton@chromium.org
BUG=chromium:436896
LOG=n

Review URL: https://codereview.chromium.org/755333003

Cr-Commit-Position: refs/heads/master@{#25527}