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}

This CL removes unnecessary code duplication in the fuzzer code. Instead
of having special testing functions to compile and instantiate a
WebAssembly module, we now just call SyncCompile and SyncInstantiate.

This also fixed a problem when the fuzzer generated a GrowMemory
instruction.

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

Change-Id: I5f2f23349b5866ea67be20a0826271791e1a013e
Reviewed-on: https://chromium-review.googlesource.com/529210
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45851}

BUG=chromium:716032

Review-Url: https://codereview.chromium.org/2919023003
Cr-Commit-Position: refs/heads/master@{#45850}

This adds support for materializing objects of {JSGeneratorObject} type
during deoptimization. Cases where soft-deopts remove any escaping use
of the implicit generator object can cause it to be escape analyzed.

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

Change-Id: I2ec10b2a509a4f37a456a8ca2fd74b8de2fb55be
Reviewed-on: https://chromium-review.googlesource.com/530847Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45849}

Explicitly set argument for use_cfi_recover introduced in:
https://codereview.chromium.org/2920963002

This retains the behavior we had in GYP:
Print useful diagnostics, but crash to make the errors show up.

Also set use_cfi_cast=true. In gyp we've set this by default:
-fsanitize=cfi-derived-cast
-fsanitize=cfi-unrelated-cast

In GN it now lives behind the use_cfi_cast flag.

NOTRY=true
TBR=vogelheim@chromium.org

Bug: chromium:726584
Change-Id: If202bc42fff3d5ff398576a114af7a7c3fb3fd2b
Reviewed-on: https://chromium-review.googlesource.com/528175Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45848}

This removes support for disabling TurboFan by default via the build
time {v8_disable_turbo} flag. We no longer need to be able to build
binaries with TurboFan disabled.

R=machenbach@chromium.org
BUG=v8:6408

Change-Id: I4062914c2bf823ab42250595ad67d1dc8da3f1d3
Reviewed-on: https://chromium-review.googlesource.com/528138Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45847}

* add functionality to wasm-module-builder.js to emit the module name
  in the name section.
* extend WasmModule to store the module name length and offset.
* add functionality to module-decoder.cc to decode the module name.
* use the module name for printing stack traces. more uses should
  follow.
* extend one message test to contain a module name.

R=ahaas@chromium.org

Change-Id: I94e6f1f2eb99cb656a92a85bb7afe0742292046f
Reviewed-on: https://chromium-review.googlesource.com/530366Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45846}

Leftover from https://chromium-review.googlesource.com/522664.

TBR=jgruber@chromium.org

Bug: 
Change-Id: Ifb37d235bc1be83b310a821514c61e901b594540
Reviewed-on: https://chromium-review.googlesource.com/530787
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45845}

Don't use byte-width instructions when accessing |compiler_hints|
field (only FunctionKind bit field accesses are yet to be fixed).
This CL eases adding new bit fields to the compiler hints field.

Bug: v8:6470
Change-Id: Ibc2dfb42c0bf0df49fcb9e37c10fda789db4c3c8
Reviewed-on: https://chromium-review.googlesource.com/528120Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45844}

This reverts commit 195eab46.

BUG=chromium:626082, chromium:728228

Review-Url: https://codereview.chromium.org/2931393002
Cr-Commit-Position: refs/heads/master@{#45843}

Only the CompilationCache doesn't actually specialize the table to the point where it knows how to hash stored keys. This moves the virtual HashForObject down from HashTableKey to CompilationCacheKey, and moves previous virtual implementations to the respective shapes.

Bug: v8:6474
Change-Id: I0a1ae26a224d602d16692d2b09c96a2ab193f07f
Reviewed-on: https://chromium-review.googlesource.com/529110Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45842}

TBR=mvstanton@chromium.org

Change-Id: I1f348a050c321968cb20c783ebe4b55f6beed27c
Reviewed-on: https://chromium-review.googlesource.com/530826Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45841}

This allows us to just call this method without returning dummy
{nullptr} values or even calling {graph()->NewNode()} afterwards.

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

Change-Id: I6c03eb639dfb635ce791e7d3a731d9dfdf7800a8
Reviewed-on: https://chromium-review.googlesource.com/529308
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45840}

Callables for TF builtins are autogenerated and accessible through
Builtins::CallableFor.  This removes the manually written accessors from
CodeFactory.

Bug: v8:6474,v8:5737
Change-Id: I9d8dec97995471c1bb258147220c190bf72e5de8
Reviewed-on: https://chromium-review.googlesource.com/530745Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45839}

For more static type safety: Avoid passing wasm objects as Object and
casting them before use. Use the correct type right away.

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

Change-Id: Id0c486560115dd1a7bd9b6a12d2fb938e06520ef
Reviewed-on: https://chromium-review.googlesource.com/530744Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45838}

The respective code was removed in May 2015:
c5eb9573

R=jochen@chromium.org
BUG=v8:6474
NOTRY=true

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I21be194e16b0a10613d62bc38fa10faee082da41
Reviewed-on: https://chromium-review.googlesource.com/530685Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45837}

Variadic template FTW!

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

Change-Id: I0585e25e861e8a2fcd29501872edd6b0dd494302
Reviewed-on: https://chromium-review.googlesource.com/529188Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45836}

The instanceof cache was initially introduced to speed up

  x instanceof y

where y is always the same constructor and x is always an object with
the same map. With the introduction of ES2015's @@hasInstance and the
Function.prototype[Symbol.hasInstance] handler (which calls into
OrdinaryHasInstance), this already became quite useless. It doesn't seem
to provide any real value (not sure it ever did for real), but it's
getting in the way of some useful refactorings (i.e. sharing logic
between OrdinaryHasInstance and Object.prototype.isPrototypeOf for
example).

So this CL completely removes the leftover bits of the instanceof cache,
including the GC and SetPrototype logic.

BUG=v8:6479,v8:6474
R=jgruber@chromium.org
TBR=ulan@chromium.org

Review-Url: https://codereview.chromium.org/2932263002
Cr-Commit-Position: refs/heads/master@{#45835}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b8ed7ac..bb21bc0

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

Change-Id: Ice2dcc25e1903c22c6e802048798ac02569808c5
Reviewed-on: https://chromium-review.googlesource.com/530765Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45834}

Add vpinsrd, vpextrd, vmovd. Supplement pshufd and add vpshufd.
Add Movd and Pshufd macro. Add AVX support to Pextrd.
Fix disassembler to recognize "pinsrd/pextrd xmm,[mem],imm8".

BUG=

Review-Url: https://codereview.chromium.org/2916093002
Cr-Commit-Position: refs/heads/master@{#45833}

Follows https://codereview.chromium.org/2931143002/. Sufficient to link
d8 with target_os="fuchsia" in Chrome. No implementations of platform
functions yet, just stubs.

BUG=chromium:731217

Review-Url: https://codereview.chromium.org/2932053004
Cr-Commit-Position: refs/heads/master@{#45832}

Sufficient to compile //v8 in Chrome with target_os="fuchsia". Doesn't
link yet, due to missing implementations (primarily VirtualMemory, as
well as a few utility functions).

BUG=chromium:731217
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_rel_ng

Review-Url: https://codereview.chromium.org/2931143002
Cr-Commit-Position: refs/heads/master@{#45831}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/7e9e29e..b8ed7ac

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

Change-Id: Ibacdf4134dbdf2f943f3008d45d903fdc1266a62
Reviewed-on: https://chromium-review.googlesource.com/530704Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45830}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/41581bc..7e9e29e

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/buildtools/+log/31d4daa..b53a03d

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/32bdd96..36e1cda

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/7474c16..fbd95a5

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

Change-Id: Idebff46b3228c7fdd16e4cc9c47dbe9de7f1bfa8
Reviewed-on: https://chromium-review.googlesource.com/530286Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45829}