Since there is no `Value::IsInteger` method in the API, we in the
Node.js project are going to rely on what looks like an implementation
detail of the Integer class. It is currently possible to to call
`Integer::Value` on any Number and the value is cast to an integer.
This commit adds tests for this behavior.

Change-Id: I4de09e7c6e0beac7909e5477f7bfe2ed4c9415b9
Reviewed-on: https://chromium-review.googlesource.com/1200983
Commit-Queue: Michaël Zasso <mic.besace@gmail.com>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55629}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/6773a0d..4ca6fa3

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/88dc49a..70783e3

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/e323bd9..f215ae6

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

Change-Id: I7c97c65f0f13e103f174ed0002b679710e330e9b
Reviewed-on: https://chromium-review.googlesource.com/1205616
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#55628}

Port CreateBreakIterator and BreakIterator.prototype.resolvedOptions to
C++, refactoring the entire class into another one called
JSV8BreakIterator that would be a subclass of JSObject.

TBR: benedikt@chromium.org
Bug: v8:8111
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I9bd1d82ec34b210c8ed59ea6576548d45a34b8d5
Reviewed-on: https://chromium-review.googlesource.com/1198946
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55627}

Move Unwrap,FormatDateTime,DateTimeFormat,ToDateTimeOptions,ToLocaleDateTime to JSDateTimeFormat

Bug: v8:8066
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.chromium.try:linux_chromium_rel_ng
Change-Id: I4d83cc96ea280ab8f77df5a431b877b76b05f1ac
Reviewed-on: https://chromium-review.googlesource.com/1198142
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55626}

Bug: v8:8066
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.chromium.try:linux_chromium_rel_ng
Change-Id: I74fe09bb6bb4428d57c66811b77f5f35144f717f
Reviewed-on: https://chromium-review.googlesource.com/1186153
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55625}

As a step of Context-associated MicrotaskQueue [1], this CL adds
a stub for v8::internal::MicrotaskQueue.

[1]: https://docs.google.com/document/d/1oNNhXF66dmwyj5S6Ri_g1vmBZltK8rWvZo1Tgqj64Z0/edit?usp=sharing

Tbr: bmeurer@chromium.org
Bug: v8:8124
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ie3d86ca49d46749660ec1316e4ae051528076e97
Reviewed-on: https://chromium-review.googlesource.com/1192803
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55624}

Change-Id: Id2ba591deb39428d9c788a9c9dcfd15bb8581bd0
Reviewed-on: https://chromium-review.googlesource.com/1205330Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#55623}

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.chromium.try:linux_chromium_rel_ng

Bug: v8:7979
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ic390fbde6e04e86b8e284975c13c1eff8dc59e90
Reviewed-on: https://chromium-review.googlesource.com/1205411Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55622}

Bug: v8:7979

TBR: benedikt@chromium.org
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.chromium.try:linux_chromium_rel_ng
Change-Id: I9d5181c15b56de3bc5288d11bd83e55157c7a610
Reviewed-on: https://chromium-review.googlesource.com/1168518
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55621}

Change-Id: I0bd15f4769e9ab09aec3f479af0ee50fc81fd6dc
Reviewed-on: https://chromium-review.googlesource.com/1204950Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#55620}

Reocord UMA counters for the following phases:
- Scavenging roots
- Scavenging object graph in parallel

Bug: chromium:850508
Change-Id: I07210271179ce6801ea6daf3b486b4ce237a3261
Reviewed-on: https://chromium-review.googlesource.com/1199302
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55619}

Since the benchmark is very fast, a warmup is useful to reduce the noise
created by optimization.

Change-Id: I4902c5c1695099be766d0fcc563c2f5d0892d3a9
Reviewed-on: https://chromium-review.googlesource.com/1204112
Commit-Queue: Hai Dang <dhai@google.com>
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55618}

Bug: v8:8015
Change-Id: Ic6d3b4f927095ba2e78509c1ba07e5b9258426e2
Reviewed-on: https://chromium-review.googlesource.com/1198182Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55617}

Allow mocking the limits for ArrayBuffer allocation to simulate operating
system OOM.

Bug: chromium:845409
Change-Id: I38bf56a3677e1db547c774223c81e913f56cb631
Reviewed-on: https://chromium-review.googlesource.com/1203895Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55616}

This fixes an off-by-one in the ordering restriction check for exception
sections in a module. It also adds proper testing for exception handling
of indirect calls. This in turn adds a table section that triggers the
aforementioned bug.

R=clemensh@chromium.org
TEST=mjsunit/wasm/exceptions,unittests/WasmModuleVerifyTest
BUG=v8:8091

Change-Id: Ie44ad4dee1b0c623f069fca7661c4282492b52d6
Reviewed-on: https://chromium-review.googlesource.com/1203993Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55615}

{go} sounds active, as if the state would be changed. {reached} sounds
like an accessor.

Drive-by: Make the accessor const to further clarify that this is just
an accessor.

R=titzer@chromium.org

Bug: v8:8015
Change-Id: I80d5223b9573345d3de386d68871a9e828621fc0
Reviewed-on: https://chromium-review.googlesource.com/1203992Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55614}

Utf*Characterstream caches the data pointer of ExternalStrings through
ExternalStringStream, so lock the strings in ExternalStringStream.

Bug: chromium:877044
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I241caaf64e109b33e2f9982573e11c514410509c
Reviewed-on: https://chromium-review.googlesource.com/1194003
Commit-Queue: Benoit L <lizeb@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55613}

This is a reland of 5bbd1921

Original change's description:
> [scanner] Inlining ScanIdentifier and Token check
>
> This improves parse time for code-load and other benchmarks.
>
> Bug: v8:7926
> Change-Id: I9c8017f2e7f73dd952c025db5abe8e4062e6ef9b
> Reviewed-on: https://chromium-review.googlesource.com/1196506
> Commit-Queue: Florian Sattler <sattlerf@google.com>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55521}

TBR=verwaest@chromium.org,marja@chromium.org

Bug: v8:7926
Change-Id: I35f265a2a2189325daaf4a361bda35bf82758b16
Reviewed-on: https://chromium-review.googlesource.com/1203731Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55612}

This reverts commit 0e78aceb.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Reland "Ship globalThis 🎉"
> 
> This reverts commit f7df60d5.
> 
> Original change's description:
> > Revert "Ship globalThis 🎉"
> > 
> > This reverts commit 4dac9872.
> > 
> > Reason for revert: Speculative revert for layout test failures:
> > https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/25970
> > 
> > E.g.:
> > virtual/service-worker-servicification/http/tests/serviceworker/webexposed/global-interface-listing-service-worker.html
> > 
> > Original change's description:
> > > Ship globalThis 🎉
> > > 
> > > Proposal repository:
> > > https://github.com/tc39/proposal-global
> > > 
> > > Intent to ship:
> > > https://groups.google.com/d/msg/v8-users/Vkoh0wXRwaM/Yt7MpzhkAgAJ
> > > 
> > > Bug: v8:5537
> > > Change-Id: I60a6c5375165d89548db12fef454a64137d04c27
> > > Reviewed-on: https://chromium-review.googlesource.com/1195494
> > > Reviewed-by: Adam Klein <adamk@chromium.org>
> > > Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> > > Commit-Queue: Mathias Bynens <mathias@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#55543}
> > 
> > TBR=adamk@chromium.org,gsathya@chromium.org,mathias@chromium.org
> > 
> > Change-Id: Iacb484d36ba2c8002336038660450b240006e0ab
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Bug: v8:5537
> > Reviewed-on: https://chromium-review.googlesource.com/1199743
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#55564}
> 
> TBR=adamk@chromium.org,machenbach@chromium.org,gsathya@chromium.org,mathias@chromium.org
> 
> Change-Id: I7912be09ab68ef956a8cc164fa8bbd937efb58c5
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:5537
> Reviewed-on: https://chromium-review.googlesource.com/1200722
> Reviewed-by: Mathias Bynens <mathias@chromium.org>
> Commit-Queue: Mathias Bynens <mathias@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55606}

TBR=adamk@chromium.org,machenbach@chromium.org,gsathya@chromium.org,mathias@chromium.org

Change-Id: Id41dbefc3b2015e66f71a0410bebae632692f178
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:5537
Reviewed-on: https://chromium-review.googlesource.com/1203893Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55611}

Before, splice was implemented with a C++ fast path and a
comprehensive JavaScript version.

This impl. is entirely in Torque with a fastpath for SMI,
DOUBLE and OBJECT arrays, and a comprehensive slow path.
The same level of "sparse" array support as given by the
array.js implementation is included.

This reland addresses several issues:

* Removed "sparse" array support from splice.
* Addressed ClusterFuzz issue 876443:
  The test and code that uses the fix is in this CL.
  The fix in isolation can be seen here:
  https://chromium-review.googlesource.com/c/v8/v8/+/1199403
* Removed dead code in elements.cc

BUG=chromium:876443, v8:8131, v8:1956, v8:7221

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I2d4a66c24ba1edabeca34e27e6ff8ee6136ed5f1
Reviewed-on: https://chromium-review.googlesource.com/1201783
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55610}

Since https://crrev.com/c/1112003, the memory size is stored as size_t
instead of uint32_t in order to support 4GB memories.
Loading it as uint32_t only works on little-endian systems, and only for
memory sizes <4GB. This CL fixes this to load and process the memory
size as pointer-sized value.
Additional platform-specific methods are added to perform a shift by a
constant value. This can be reused to improve the generated code for
other shifts.

R=titzer@chromium.org

Bug: v8:8130, v8:6600
Change-Id: Ifa688a3ed0e2809190571f24bdf47a7f53880b3d
Reviewed-on: https://chromium-review.googlesource.com/1203950
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55609}

Bug: v8:8015
Change-Id: I6540104f58acd819d5a57edae49f8b909aa1a065
Reviewed-on: https://chromium-review.googlesource.com/1203892Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55608}

R=clemensh@chromium.org

Change-Id: I6539bef4a0caa01bffaad85332c31681176c24d6
Reviewed-on: https://chromium-review.googlesource.com/1204110Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55607}

This reverts commit f7df60d5.

Original change's description:
> Revert "Ship globalThis 🎉"
> 
> This reverts commit 4dac9872.
> 
> Reason for revert: Speculative revert for layout test failures:
> https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/25970
> 
> E.g.:
> virtual/service-worker-servicification/http/tests/serviceworker/webexposed/global-interface-listing-service-worker.html
> 
> Original change's description:
> > Ship globalThis 🎉
> > 
> > Proposal repository:
> > https://github.com/tc39/proposal-global
> > 
> > Intent to ship:
> > https://groups.google.com/d/msg/v8-users/Vkoh0wXRwaM/Yt7MpzhkAgAJ
> > 
> > Bug: v8:5537
> > Change-Id: I60a6c5375165d89548db12fef454a64137d04c27
> > Reviewed-on: https://chromium-review.googlesource.com/1195494
> > Reviewed-by: Adam Klein <adamk@chromium.org>
> > Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> > Commit-Queue: Mathias Bynens <mathias@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#55543}
> 
> TBR=adamk@chromium.org,gsathya@chromium.org,mathias@chromium.org
> 
> Change-Id: Iacb484d36ba2c8002336038660450b240006e0ab
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:5537
> Reviewed-on: https://chromium-review.googlesource.com/1199743
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55564}

TBR=adamk@chromium.org,machenbach@chromium.org,gsathya@chromium.org,mathias@chromium.org

Change-Id: I7912be09ab68ef956a8cc164fa8bbd937efb58c5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:5537
Reviewed-on: https://chromium-review.googlesource.com/1200722Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55606}

R=clemensh@chromium.org
TEST=mjsunit/wasm/exceptions
BUG=v8:8091

Change-Id: I866430e1f3d3e7b93001a4375a869f19de75e65e
Reviewed-on: https://chromium-review.googlesource.com/1203954Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55605}

Also extend the API to reflect this new feature.


R=jgruber@chromium.org, szuend@google.com, ulan@chromium.org

Bug: v8:8125
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ic7a7604a8c663ba04b324eb8902ff325a25654e7
Reviewed-on: https://chromium-review.googlesource.com/1202087Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55604}

R=machenbach@chromium.org

Change-Id: I28553eb80f78359e6aeb5bb05a1ea39467e164c9
Reviewed-on: https://chromium-review.googlesource.com/1203830Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55603}

This fixes exception creation (by the WebAssembly throw operation) so
that it is not observable by JavaScript. Internal properties are now
stored with symbol names instead of string names, which also prevents
them from being accessed or monkey-patched directly by JavaScript.

R=clemensh@chromium.org
TEST=mjsunit/regress/wasm/regress-8094
BUG=v8:8094

Change-Id: I33cb27f4373114cd4db28d9aef23560093e55242
Reviewed-on: https://chromium-review.googlesource.com/1203951
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55602}

WebAssembly.Instantiate would silently fail when the passed in memory
object did not have guard regions even though the compiled module assumes
so. This lead to an inconsitent state and a DCHECK error. Instead, now
throw a LinkError.

Change-Id: I68bab842bcc40d3325aea4b19979d80054ed407c
Reviewed-on: https://chromium-review.googlesource.com/1180892
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55601}

Bug: v8:8126

R=sattlerf@google.com
CC=jgruber@chromium.org, titzer@chromium.org

Change-Id: I32ec94fd913def346d1e783b2ffd0ec7d16e5df5
Reviewed-on: https://chromium-review.googlesource.com/1203730Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55600}

The wasm compiler used Pipeline::GenerateCodeForTesting to generate code
for various stubs. This change adds a dedicated entry point and moves
some common code there.

Bug: v8:8015
Change-Id: Ied628ba14c36e68826cb71d00506994184cc4763
Reviewed-on: https://chromium-review.googlesource.com/1196885
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55599}

R=machenbach@chromium.org

Bug: chromium:874316
Change-Id: I148916d0b0f34214325910b29aceb39d3a1db459
Reviewed-on: https://chromium-review.googlesource.com/1201523Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55598}

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/5167fb3..88dc49a

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

Change-Id: I84883887372c1abff8d2a643f98dad7ba867e903
Reviewed-on: https://chromium-review.googlesource.com/1203570
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#55597}

In general, whether an error thrown from a script will be muted is
passed as (part of) ScriptOriginOptions when the script is compiled.
Currently, when eval is called, that information is not given, and it
uses the default options (IsSharedCrossOrigin = false,
IsOpaque = false). Give it the options for the script in which eval
is called.

Bug: chromium:875153
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.chromium.try:linux_chromium_rel_ng
Change-Id: I4b5b872b4a8c2b8e503d457f199d85892a4c817c
Reviewed-on: https://chromium-review.googlesource.com/1188052Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55596}

The previous typing rules for ToNumeric and ToNumber didn't match on the
NonBigIntPrimitive input set, which causes trouble when we morph ToNumeric
nodes into ToNumber nodes, and generally lead to worse typings in the
graph, and thus worse code generation. This change improves the existing
typing rules and turns ToNumber into a chokepoint again.

Bug: chromium:879898, v8:8015
Change-Id: I4a7ff0e9c420c5dcfdb2b96884e019a5943828a4
Reviewed-on: https://chromium-review.googlesource.com/1201522Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55595}

This reverts commit 1b3b808a.

Reason for revert: crbug/879988

TBR=kozy@chromium.org

Original change's description:
> inspector: find magic comment using V8 scanner
>
> Inspector tries to provide sourceURL and sourceMappingURL for scripts
> with parser errors. Without this CL we convert source of each script
> to inspector string and search for magic comment there. Some web sites
> use pattern when they get some data from network and constantly try to
> parse this data as JSON, in this case we do a lot of useless work.
>
> So we can parse magic comments on V8 side only for compilation errors
> (excluding parse JSON errors), to do it we can reuse scanner by running
> it on each potential comment.
>
> R=​alph@chromium.org,verwaest@chromium.org,yangguo@chromium.org
>
> Bug: chromium:873865,v8:7731
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I77c270fd0e95cd7b2c9ee4b7f72ef344bc1fa104
> Reviewed-on: https://chromium-review.googlesource.com/1182446
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Alexei Filippov <alph@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55280}

TBR=alph@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org,verwaest@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: chromium:873865, v8:7731, chromium:879988
Change-Id: Ia7ac766e19f9b58562d9430811f10b25c4556a46
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/1202583
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55594}

Change-Id: Ifbe9ac0dc49b9826fb7ea2e81ce8e44401c3dc20
Reviewed-on: https://chromium-review.googlesource.com/1200002Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55593}

This reverts commit 5bbd1921.

Reason for revert: Tentative revert for crbug.com/879988

TBR=sattlerf@chromium.org,verwaest@chromium.org

Original change's description:
> [scanner] Inlining ScanIdentifier and Token check
>
> This improves parse time for code-load and other benchmarks.
>
> Bug: v8:7926
> Change-Id: I9c8017f2e7f73dd952c025db5abe8e4062e6ef9b
> Reviewed-on: https://chromium-review.googlesource.com/1196506
> Commit-Queue: Florian Sattler <sattlerf@google.com>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55521}

TBR=marja@chromium.org,verwaest@chromium.org,sattlerf@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:7926, chromium:879988
Change-Id: Ic71d9cf63b69c0f9560851259f434b02cc082417
Reviewed-on: https://chromium-review.googlesource.com/1202086
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55592}

made possible by https://chromium-review.googlesource.com/c/chromium/src/+/1063611

Bug: chromium:826218
Change-Id: Id3123de5705c91beb0a5eb87ca4490fe55a7de01
Reviewed-on: https://chromium-review.googlesource.com/1201002Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55591}

Now that we've removed kRootRegister from all ia32 interface
descriptors, let's make sure it does not sneak back in.

Bug: v8:6666
Change-Id: Ie3528908a142c36f106b0053041ed974216533d4
Reviewed-on: https://chromium-review.googlesource.com/1202083
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55590}