Bug: 
Change-Id: I9f0329b69693749c243c05b27c542c4ccdd71a11
Reviewed-on: https://chromium-review.googlesource.com/531244Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45891}

This fixes the counter inconsistencies and makes use of the already existing
mechanism for partially releasing memory.

This reverts commit c8e6cdfd.

Bug: chromium:724947
Change-Id: I2a7b52a28654fd2524df502a353997393d4f53ac
Reviewed-on: https://chromium-review.googlesource.com/530369Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45890}

This is an unexciting CL (doesn't make the build step situation any better)
but enables moving FixedArray & co next.

BUG=v8:5402,v8:6474

Change-Id: Ia36eb3973e6242f6f68e02b9f583dc552d48422f
Reviewed-on: https://chromium-review.googlesource.com/529168
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45889}

This removes the {IsWasm} and {IsAsmJs} methods, which tested a
ModuleOrigin for a specific constant.
These methods do not comply with our naming conventions, and we don't
have such methods for other enums.

Drive-by: Refactor the code which used these methods for better
readability and maintainability.

R=ahaas@chromium.org, kschimpf@chromium.org
BUG=v8:6474

Change-Id: I98eb4dba5420eaa9452ae6f27598ec8b581a0984
Reviewed-on: https://chromium-review.googlesource.com/530229Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45888}

The AST-based graph builder is by now only used for asm.js code. This
change hard-codes this assumption into the compilation pipeline and
hence allows us to remove support pertaining to deoptimization from
optimized code that was not derived from bytecode.

R=jarin@chromium.org
BUG=v8:6409

Change-Id: I1138f16f663db5b9ee34e3110184067b8fcffc8b
Reviewed-on: https://chromium-review.googlesource.com/531026
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45887}

Return `nullptr` from `ArrayBuffer::Allocator::Reserve` because
apparently not doing so results in compile errors for some people.

BUG=

Ref: https://github.com/nodejs/node/issues/13392
Review-Url: https://codereview.chromium.org/2929993003
Cr-Commit-Position: refs/heads/master@{#45886}

BUG=

Review-Url: https://codereview.chromium.org/2936713002
Cr-Commit-Position: refs/heads/master@{#45885}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/bb21bc0..05cc70d

Rolling v8/third_party/android_tools: https://chromium.googlesource.com/android_tools/+log/cb6bc21..023e2f6

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/36e1cda..e6b02f2

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

Change-Id: I2cfea0bc5a985014d488d1f32ddd68a5105a74b3
Reviewed-on: https://chromium-review.googlesource.com/532553Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45884}

Also add vpinsrw

BUG=

Review-Url: https://codereview.chromium.org/2931333002
Cr-Commit-Position: refs/heads/master@{#45883}

Once a buffer has been externalized, V8 is no longer responsible for managing
the memory. The fact that V8 was freeing was leading to double free errors once
Blink's GC got around to freeing the buffer too.

Bug: chromium:730171, chromium:731046
Change-Id: Ib18a7e37cafd51bce0c5a983d5cf8f3e64eb2c13
Reviewed-on: https://chromium-review.googlesource.com/530132
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45882}

This feature has been on by default without incident
since V8 5.8.

Bug: v8:5051
Change-Id: I1baf81922efd87e07448955147c50a5ba5a0aa42
Reviewed-on: https://chromium-review.googlesource.com/532214Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45881}

Avoid constructing zones and large zone objects when initializing
WasmCompilationUnit. The main reason we did that is so we can cache
the CEntryStub node, which requires a code object, obtainable only
on the main thread. We need that value, however, on background threads,
which is also where we need the aforementioned large objects. We only
need that for the WasmCompilationUnits being currently compiled, which
is a number proportional to the number of background threads provided
by the embedder. Specifically, one zone is needed only for the duration
of the background compilation, while the second zone needs to survive 
past that, so the compilation results may be committed to the GC heap
as Code objects.

The problem with these large objects is that the first allocation
in a Zone is at minimum 8KB. We used to allocate 2 zones. For
modules with 200K functions, that means 3.2GB of memory pre-allocated
before any of it is actually needed.

This change attaches a Handle to the CEntryStub on the WasmCompilationUnits,
and delays zone creation to when needed. The change also adds a way to 
cache CEntryStubs in a JSGraph from a given Code handle - limited to the
scenario needed by wasm (and removable once we get wasm off the GC heap,
which subsumes removing this dependency on CEntryStubs)

An additional constraint for this change is that we want it to be easily 
back-mergeable to address chromium:723899.

For the wasm payload in question, collecting the max memory used by d8
using /usr/bin/time --format='(%Xtext+%Ddata %Mmax)', we get the 
following numbers (in KB):

- unchanged: 3307480
- patch 1: 1807140 (45% reduction)
- patch 3: 1230320 (62% reduction from first)
- patch 5/6: 519368 (84% reduction from first)

Bug: chomium:732010, chromium:723899
Change-Id: I45b96792daf8a9c8dc47d45fb52da75945a41401
Reviewed-on: https://chromium-review.googlesource.com/530193
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45880}

These accessors are only called from the Parser, never ParserBase, so
there's no need to expose them in parser-base.h. Instead, access them
through FunctionState::scope().

This also allows removal of the Types::Variable typedefs.

Bug: v8:6460
Change-Id: I01186c53d3cc2a2737f3c07169fdd122dff5b174
Reviewed-on: https://chromium-review.googlesource.com/530034Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45879}

Fix v8 link errors (in component_build=true)
https://build.chromium.org/p/chromium.fyi/builders/Fuchsia%20(dbg)

BUG=chromium:731217

Review-Url: https://codereview.chromium.org/2930343002
Cr-Commit-Position: refs/heads/master@{#45878}

Minor fix to original CL https://chromium-review.googlesource.com/528120

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: If94e74e9ce97dfbddd578a60d1cfce1fe2b9265d
Reviewed-on: https://chromium-review.googlesource.com/531524Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#45877}

The race happens when an object transitions to a newly created map.
The map initializing stores can be reordered after object->set_map(map),
which will cause the concurrent marker to observe inconsistent map.

The fix is to use store-release when setting the map pointer and
acquire-load when reading the map in the concurrent marker.

BUG=chromium:694255

Change-Id: I4fd6bc27dd70ff1a30f56a4cec13310ccdd627c8
Reviewed-on: https://chromium-review.googlesource.com/528118Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45876}

BUG=chromium:728228

Review-Url: https://codereview.chromium.org/2930333002
Cr-Commit-Position: refs/heads/master@{#45875}

- Remove commented out line
- Simulate full space properly, independently of flags set

Bug: 
Change-Id: I6013caae43eb40dd568fbd872eb0ee78288c61bf
Reviewed-on: https://chromium-review.googlesource.com/531084Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45874}

Distinguish the compilation caches instead by the shape of the key (cow fixed
array map meaning eval or script cache). This allows us to remove the odd "key"
argument from Shrink, EnsureCapacity and Rehash.

Bug: v8:6474
Change-Id: Ibcad22813063c3a9050da13dc51359f5b59e1254
Reviewed-on: https://chromium-review.googlesource.com/531184Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45873}

Bug: v8:5717, v8:6354
Change-Id: I4ae2a0b629ca8fe03fb8f645aa5f22cf7f2e4a20
Reviewed-on: https://chromium-review.googlesource.com/515024Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45872}

... by reading the |map_index| value from the SharedFunctionInfo's
|compiler_hints| field directly.

Bug: v8:6459
Change-Id: I32c4c903b16fa9f7e7da755667dadef7fadfc5e0
Reviewed-on: https://chromium-review.googlesource.com/531024
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45871}

This adds missing support for in-object properties within objects having
the {JSGeneratorObject} type to materialization during deoptimization.
For corner-cases where the implicit generator object is statically known
not to escape, object layout might still be arbitrarily complex.

R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-732169
BUG=chromium:732169,v8:6481

Change-Id: I32f373913d60af64981dc4ed66873cc8a1dbe872
Reviewed-on: https://chromium-review.googlesource.com/530230Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45870}

Reshuffle |compiler_hints| bits to allow using smaller mask constants
when generating code that checks if certain bit is set.

Bug: v8:6470
Change-Id: I4c5de882405a575200a49355065dc5909ad88f58
Reviewed-on: https://chromium-review.googlesource.com/530309
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45869}

The fence ensures that the concurrent marker observes consistent state
of mark-bits for newly allocated objects.

The patch also moves Bitmap functions to cc file and removes non-atomic
versions of SetRange and ClearRange.

BUG=chromium:694255

Change-Id: I466bef654f3d4a21b7aaebdfd6d5a39ddb5f2a0a
Reviewed-on: https://chromium-review.googlesource.com/530367Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45868}

Use new macros for defining bit fields.

Bug: v8:6470
Change-Id: Ie580ba7fc64f9958a3d4586d54d67e5dc66f1b53
Reviewed-on: https://chromium-review.googlesource.com/529824
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45867}

[heap] Register an idle embedder garbage collection when starting incremental marking through reached marking limit.

We need to schedule an idle garbage collection in the embedder to drive progress. The embedder is responsible to schedule the request or ignore it.

BUG=chromium:728228

Review-Url: https://codereview.chromium.org/2937433002
Cr-Commit-Position: refs/heads/master@{#45866}

BUG=
R=bjaideep@ca.ibm.com, jyan@ca.ibm.com, joransiu@ca.ibm.com, machenbach@chromium.org, rossberg@chromium.org

Review-Url: https://codereview.chromium.org/2931133002
Cr-Commit-Position: refs/heads/master@{#45865}

console.context(name:string) method returns console instance, this console instance fully implements console interface (including fact that any method can be called without console as receiver).
Protocol.Runtime.consoleAPICalled notification contains additional context:string field:
- "anonymous#unique-id" for any method call on unnamed console context,
- "name#unique-id" for any method call on named console context.

console.count and console.timeEnd have context as a scope.
console.clear clear all messages regardless on what context instance it was called.

console calls is ~10% slower with this CL since we need to store and then fetch console_context_id and console_context_name from function object.
We recently (in April) made console calls twice faster so 10% doesn't sound critical and existing of console.log call in hot code is problem by itself.

R=pfeldman@chromium.org

Bug: chromium:728767
Change-Id: I5fc73216fb8b28bfe1e8c2c1b393ebfbe43cd02e
Reviewed-on: https://chromium-review.googlesource.com/522128Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45864}

MIPS port of https://chromium-review.googlesource.com/c/519165/.

R=ivica.bogosavljevic@imgtec.com, jarin@chromium.org

Bug: v8:6048
Change-Id: I27c8b43726119904441f286a6c97d602fd2d0150
Reviewed-on: https://chromium-review.googlesource.com/530806Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45863}

The EnableFlagScope is useful also for non-boolean flags. With the
template we can use if for example in the wasm fuzzers to reduce the
maximum memory size of a wasm module.

In addition I put the EnableFlagScope into the v8::internal namespace,
and I fixed a small typo.

BUG=v8:6474
R=clemensh@chromium.org

Change-Id: Iae5d5c058c334cd0f9e09d20adfd229fc2d6c585
Reviewed-on: https://chromium-review.googlesource.com/531005
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45862}

This method is dead now (after
https://chromium-review.googlesource.com/529844 and
https://chromium-review.googlesource.com/529210).

R=ahaas@chromium.org
BUG=v8:6474

Change-Id: Icd355283312bfae712c0db61bb5049925762060b
Reviewed-on: https://chromium-review.googlesource.com/530312Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45861}

Don't use byte-width instructions when accessing |compiler_hints| field.
This CL eases adding new bit fields to the compiler hints field.

Bug: v8:6470
Change-Id: I7b07c1c8d0a11a303eebb5272d2846a5a84005f7
Reviewed-on: https://chromium-review.googlesource.com/529804
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45860}

In many places in WasmModule and contained structs we store references
into the wire bytes as pairs of offset and length.
This CL introduces a WireBytesRef struct which encapsulates these two
connected fields. This makes it easier to pass them and assign them as
one unit.

R=ahaas@chromium.org, mtrofin@chromium.org
BUG=v8:6474

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I4f2a40d848a51dc6f6f599f9253c3c6ed6e51627
Reviewed-on: https://chromium-review.googlesource.com/530687
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45859}

This CL is the first step in introducing a compilation manager for
asynchronous compile jobs in WebAssembly.

The compilation manager holds a list of currently active
AsyncCompileJobs. With the compilation manager these compile jobs get
deallocated when the isolate shuts down. Note that this CL is not enough
to provide a graceful isolate shutdown. For this we have to wait for all
compilation tasks to finish before we shut down, and we have to make the
tasks stateless. I plan to do these changes in separate CLs.

R=clemensh@chromium.org, mtrofin@chromium.org

BUG=v8:6436

Change-Id: I9a6e165dd2ef6d33944ca303fed49f7940eea7a2
Reviewed-on: https://chromium-review.googlesource.com/528079Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45858}

We were emitting the table index once in the element section instead of
once per element segment. This did not cause failures because we never
had more than one element segment.
This CL fixes this, and adds a test for more than one segment.

R=rossberg@chromium.org

Change-Id: I13923baf3dae383c72760286e24242d0ad55c4db
Reviewed-on: https://chromium-review.googlesource.com/527155Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45857}

BUG=chromium:694255

Change-Id: I5dc1efff984c4e358313960fc4c1598e3a3ff313
Reviewed-on: https://chromium-review.googlesource.com/528105Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45856}

BUG=chromium:694255

Change-Id: Ibfffc68a513511866dc4eebcf0728e51feb1a7fd
Reviewed-on: https://chromium-review.googlesource.com/530746Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45855}

BUG=v8:6474

Change-Id: I820ed47f18a41a1e281a78f1754f483a81627de8
Reviewed-on: https://chromium-review.googlesource.com/528104Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45854}

BUG=v8:5402,v8:6474

Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Id38249fe9dc88001218aa1faa1b31c9d2f9703d1
Reviewed-on: https://chromium-review.googlesource.com/528102
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45853}

This is a testing-only function, which is semantically equivalent to a
SyncCompile followed by SyncInstantiate.
We add a new SyncCompileAndInstantiate function to do those two steps
in one go, and use this method instead.
For AsmJs modules, a new testing function CompileAndRunAsmWasmModule is
introduced.

This is part of our effort to reduce the number of special paths for
testing. It is connected with
https://chromium-review.googlesource.com/529210, but should not
conflict with it.
After landing both CLs, we can later also get rid of
InstantiateModuleForTesting.

R=ahaas@chromium.org, mtrofin@chromium.org
BUG=v8:6474

Change-Id: I7891e968370d5eb68803076ce2639c65a2799dcc
Reviewed-on: https://chromium-review.googlesource.com/529844Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45852}