Design doc https://goo.gl/fgc2Cp

Bug: v8:6891

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I8bc5ea3137fd1b66213403ae9ea3461f40efc977
Reviewed-on: https://chromium-review.googlesource.com/c/1257923
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56757}

We use the object<T>() getter to extract the handle from an ObjectRef
instance and cast it to Handle<T>. In DEBUG mode, the cast does a type
check which accesses the heap. We must not access the heap though. This
CL is a quick fix that skips the type check. Eventually we should
replace the templatized accessor with a subclass-specific one to have
some safety.

Bug: v8:7790, v8:8316
Change-Id: I71048be2bc36570cce33b0e680824dd6bc407d14
Reviewed-on: https://chromium-review.googlesource.com/c/1282963
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56756}

We'll automatically figure out that we can't parse an expression at the EOS
anyway.

Change-Id: I663e3b9d030ee048b28472710071778bfc511747
Reviewed-on: https://chromium-review.googlesource.com/c/1286681Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56755}

This is a preparation CL to remove -Wno-unused-lambda-capture warning suppression.

Bug: chromium:681136
Change-Id: Iacd0933363cfe7e4a17191f83f567f2834dee6aa
Reviewed-on: https://chromium-review.googlesource.com/c/1288209
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56754}

Non-Android platforms are protected in Chrome by site isolation, therefore we can
disable the untrusted code mitigations. We still enable them on Android, and on
simulator builds since that is where we do much of the correctness testing for Android.

Mitigations for ia32 are disabled since they conflict with upcoming work on an ia32
root register.

BUG=chromium:860429, v8:6666

Change-Id: I7831071ec1c4490b7d303314c53c27078fa04979
Reviewed-on: https://chromium-review.googlesource.com/c/1276470Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56753}

We forgot to eliminate the read accesses of these two cells.

Bug: v8:7790, v8:8315
Change-Id: Id175e4d96461f88759b2d29ab1d407ba4c54e733
Reviewed-on: https://chromium-review.googlesource.com/c/1286680Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56752}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/4ebebc9..5839d1c

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b273e0c..5195651

Rolling v8/third_party/fuchsia-sdk: https://chromium.googlesource.com/chromium/src/third_party/fuchsia-sdk/+log/9647596..6f8b55e

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

Change-Id: Ib6c47e8fbe111eed904cc368adef9c1825d41801
Reviewed-on: https://chromium-review.googlesource.com/c/1288189Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56751}

Adds reporting for
- V8.GCMarkCompactor as sum of V8 mark-compact events

Bug: chromium:843903
Change-Id: I5e8a80c8d1a9c5bf696635b54659ac56403f52d5
Reviewed-on: https://chromium-review.googlesource.com/c/1256764
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56750}

This reverts commit 30729e82.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> [Intl] Move Intl.getCanonicalLocales to C++
> 
> Bug: v8:5751
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: I20dc0e7eda58f2d9211d0e569d553dd6fcc14fd3
> Reviewed-on: https://chromium-review.googlesource.com/c/1275807
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56747}

TBR=jshin@chromium.org,gsathya@chromium.org,ftang@chromium.org

Change-Id: I236e183288f0546b8bbdca4804a1d02421c8c714
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:5751
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/1286955Reviewed-by: Frank Tang <ftang@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56749}

Change-Id: I4f4c95c92925c8778ce915d5b37517ad6e0a6145
Reviewed-on: https://chromium-review.googlesource.com/c/1286538Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#56748}

Bug: v8:5751
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I20dc0e7eda58f2d9211d0e569d553dd6fcc14fd3
Reviewed-on: https://chromium-review.googlesource.com/c/1275807
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56747}

This reverts commit a12203c6.

Reason for revert: Breaks isolate_tests

https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20builder/36777

Original change's description:
> [wasm] Add a new wasm-js testsuite to run js-api tests
> 
> These changes were necessary to run with the new style of jsapi tests
> introduced in https://github.com/WebAssembly/spec/pull/883.
> 
> Change-Id: I4629dd48d595ed97ed0607dec9e7d9808c706a7e
> Reviewed-on: https://chromium-review.googlesource.com/c/1277724
> Commit-Queue: Ben Smith <binji@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Mathias Bynens <mathias@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56745}

TBR=binji@chromium.org,machenbach@chromium.org,yangguo@chromium.org,ahaas@chromium.org,clemensh@chromium.org,mathias@chromium.org

Change-Id: I2edd0ca94cb5990322571879c81671fa835f3ecd
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1286526Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56746}

These changes were necessary to run with the new style of jsapi tests
introduced in https://github.com/WebAssembly/spec/pull/883.

Change-Id: I4629dd48d595ed97ed0607dec9e7d9808c706a7e
Reviewed-on: https://chromium-review.googlesource.com/c/1277724
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56745}

Bug: v8:6666
Change-Id: I3e89fd09e2c8de568bf5dffdad3a5d8a9ef39ff5
Reviewed-on: https://chromium-review.googlesource.com/c/1286676
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56744}

From what I understand, it's been slated for removal for a long time, and
more accutely, Clang recently started warning about it being shadowed by
another kWeak enum:

../../v8/include/v8-profiler.h:369:5: warning: declaration shadows a variable
in namespace 'v8' [-Wshadow]
    kWeak = 6              // A weak reference (ignored by the GC).
    ^
../../v8/include/v8-util.h:29:3: note: previous declaration is here
  kWeak = kWeakWithParameter  // For backwards compatibility.  Deprecate.
  ^

Bug: chromium:895475
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I07de1418aea2d68ef5641ece4ab13f71b6d5ec7f
Reviewed-on: https://chromium-review.googlesource.com/c/1285189Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Hans Wennborg <hans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56743}

Failing test are: cctest/cctest/test-run-wasm/RunWasmLiftoff*.
Test started to fail after this commit: 56b8ab5d
This patch also fixes MIPS big endian build failure.

Change-Id: I333450f2a8f9c9a61db9aea18e5e973f48742d52
Reviewed-on: https://chromium-review.googlesource.com/c/1286348Reviewed-by: Ivica Bogosavljevic <ibogosavljevic@wavecomp.com>
Commit-Queue: Ivica Bogosavljevic <ibogosavljevic@wavecomp.com>
Cr-Commit-Position: refs/heads/master@{#56742}

Some confusion has crept in over time, specifically around
the distinction between an offset to an external reference's
address and an offset to its entry in the external reference
table. This CL unifies naming and interfaces.

Drive-by: Fix formatting in macro-assembler-x64.

Bug: v8:6666
Change-Id: Iade98ca28a7304aba0254b92b553343826a08e41
Reviewed-on: https://chromium-review.googlesource.com/c/1286674
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56741}

Currently ProfilerListener channels the code events to Processor
via CpuProfiler - we don't need this indirection and can just hook
it up directly. This also makes it easier to test because we don't need
a CpuProfiler object just to test the Processor.

Drive-by cleanup:
- Remove NUMBER_OF_TYPES from CodeEventRecord as it is not used.
- Remove Isolate* parameter from AddDeoptStack and AddCurrentStack as
  a Processor object is only ever for one Isolate. Store the Isolate*
  on the ProfilerEventsProcessor object itself.
- Remove the default case from switch in ProcessCodeEvent().

Bug: v8:5193
Change-Id: I26c1a46b0eec34b5248b707d1997c3a9409a9604
Reviewed-on: https://chromium-review.googlesource.com/c/1286341Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56740}

Drive-by: Fix ExternalReferenceAddressAsOperand. Now it correctly
returns an operand to within the external reference table.

Bug: v8:6666
Change-Id: I8226257f27a2747584d37fd948d66c6e9b0d7ecf
Reviewed-on: https://chromium-review.googlesource.com/c/1286671
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56739}

This is cleanups that I forgot to include in the previous CLs or that
did not fit in any of them.

This is the eighth CL in a series to improve our module decoder tests
and make them more readable.

R=titzer@chromium.org

Bug: v8:8238
Change-Id: I0db04288f1efd9bb4642478d22c0edc8ac17e024
Reviewed-on: https://chromium-review.googlesource.com/c/1286669
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56738}

This is the seventh CL in a series to improve our module decoder tests
and make them more readable.

R=titzer@chromium.org

Bug: v8:8238
Change-Id: Ib8bd2cc3f2fdb23b39511657a4af99f6fa781172
Reviewed-on: https://chromium-review.googlesource.com/c/1286346
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56737}

Currently, the empty function bodies actually contain the byte 0, which
is the unreachable opcode. This CL fixes this to be empty function
bodies, and uses the macros more consistently.

This is the sixth CL in a series to improve our module decoder tests and
make them more readable.

R=titzer@chromium.org

Bug: v8:8238
Change-Id: I5f029210b4589797ee194e4082afec2c7bc31561
Reviewed-on: https://chromium-review.googlesource.com/c/1286343Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56736}

Change-Id: I4ceb1455875cc27c193554681b9bb3aa07bd805e
Reviewed-on: https://chromium-review.googlesource.com/c/1286345
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56735}

TBR=sergiyb@chromium.org
NOTRY=true

Bug: v8:8290
Change-Id: Ic82b1f0c8a76f6c046bcc74d0296d7447f773335
Reviewed-on: https://chromium-review.googlesource.com/c/1286675Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56734}

This will also be useful for JSCallReducer.

In order to avoid extra work, the CL restricts one path of the JSCall
lowering to functions from the own native context.

Bug: v8:7790
Change-Id: I9f3a478969d641da59661ff196fdedae8195d680
Reviewed-on: https://chromium-review.googlesource.com/c/1286335Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56733}

This enables by the default the
  export * as foo from "bar"
syntax in modules.

Bug: v8:8101
Change-Id: I98b07d217ae08ff6a556e69cb3bf6e8f4bd46a07
Reviewed-on: https://chromium-review.googlesource.com/c/1282972Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56732}

NOTRY=true

Bug: v8:8290
Change-Id: I422788cbcf1464616a556aebbcdfe92da4822908
Reviewed-on: https://chromium-review.googlesource.com/c/1286347
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56731}

Change-Id: I25250eefe4ab3bbc007c9943a4a4420a8e573a8b
Reviewed-on: https://chromium-review.googlesource.com/c/1286342Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56730}

TBR=sergiyb@chromium.org
NOTRY=true

Change-Id: Idef28a62e250fafb04c3dd0de29429a75a924df0
Reviewed-on: https://chromium-review.googlesource.com/c/1283110Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56729}

This bundles a bunch of miscellaneous things to make more builtins
isolate-independent (e.g.: using tasm::Move instead of asm::mov
methods).

Drive-by: The isolate-independence whitelist was changed to a blacklist.

Bug: v8:6666
Change-Id: I7e0fbe8bb2ca3dc751ad070f1a92aebb88b43125
Reviewed-on: https://chromium-review.googlesource.com/c/1286331Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56728}

This is a preparation CL to remove -Wno-user-defined-warnings warning suppression.

Bug: chromium:683349
Change-Id: If883c24ebac66292329abaf01c5d328bfd51c5c9
Reviewed-on: https://chromium-review.googlesource.com/c/1286391Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56727}

Store the bits of a small type into the lower bits
of a pointer type that are free due to alignment.
Furthermore, reordering of members to reduce size of some classes.

Change-Id: I3c619cb74053f64995ea7d0cb395e8edda604f18
Reviewed-on: https://chromium-review.googlesource.com/c/1273019
Commit-Queue: Florian Sattler <sattlerf@google.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56726}

Change-Id: I54b34635842e62f08ff06c68b965f2e38155bad8
Bug: v8:8202
Reviewed-on: https://chromium-review.googlesource.com/c/1282932Reviewed-by: Stephan Herhut <herhut@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56725}

Calling RecordRelocInfo with NONE mode causes DCHECK in
ShouldRecordRelocInfo to fail.

Change-Id: I2525d3178c8f1f61cb6f58e7e257c206a94f0af0
Reviewed-on: https://chromium-review.googlesource.com/c/1283078Reviewed-by: Ivica Bogosavljevic <ibogosavljevic@wavecomp.com>
Commit-Queue: Ivica Bogosavljevic <ibogosavljevic@wavecomp.com>
Cr-Commit-Position: refs/heads/master@{#56724}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e583af8..4ebebc9

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/2be20fd..b273e0c

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/7d7bbc3..08faab9

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

Change-Id: Ia250871d2b8a15125510423f84dc7c3368217f86
Reviewed-on: https://chromium-review.googlesource.com/c/1286511
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#56723}

This is a preparation CL to remove -Wno-unused-lambda-capture warning suppression.

Bug: chromium:681136
Change-Id: If3d16c8a6719bf3135e028ab2bafe850778e31b5
Reviewed-on: https://chromium-review.googlesource.com/c/1286390Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56722}

Compute the length of more fields automatically, in particular names.

This is the fifth CL in a series to improve our module decoder tests and
make them more readable.

R=titzer@chromium.org

Bug: v8:8238
Change-Id: I1bd27f45380d82af2d7319f15ac7e37d5b9e4081
Reviewed-on: https://chromium-review.googlesource.com/c/1283077
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56721}

Bug: chromium:895799
Change-Id: Icbc06f1fc2362a04e76961f50a8ba4b29080837c
Reviewed-on: https://chromium-review.googlesource.com/c/1286336Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56720}

This also fixes the tokens that are identified as called identifiers.

Change-Id: I4a2179b98214f9018c8c07c0ab27f878cdae13cf
Bug: v8:6513
Reviewed-on: https://chromium-review.googlesource.com/c/1286338Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56719}

Instead of specifying the byte length of a section manually, just
compute it automatically from the bytes given. Manual computation is
particularly difficult because of the macros involved, which can expand
to several bytes.
This is not a pure refactoring, it also fixes several occasions where
we calculated the length wrong.

Drive-by: Add some ENTRY_COUNT macro uses.

This is the fourth CL in a series to improve our module decoder tests and
make them more readable.

R=titzer@chromium.org

Bug: v8:8238
Change-Id: I0d2ceb751fc8e5625ffdf4189d4b5253aecc2541
Reviewed-on: https://chromium-review.googlesource.com/c/1283075
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56718}