This removes the special casing for the lazy compilation stub which used
to have its own code kind, just so that the stack walker would properly
recognize its frame.

Also, by re-using the existing machinery for runtime stubs we no longer
need to copy this stub into the native module and get all the niceties
that come with embedded builtins for free.

Thirdly this will make it easier to start lazy compilation from the
background or to do it on a per-function basis without requiring yet
more special machinery, since {NativeModule::SetLazyBuiltin} no longer
requires access to the Isolate.

Kudos for the inspiration for this cleanup go to Frederik, I merely did
some of the legwork.

R=clemensh@chromium.org
BUG=v8:8834

Change-Id: Iac2b51a2e33fb0e88d25d3632fa18998123ee6c3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532064Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60365}

This is a reland of b1769313

Original change's description:
> [regalloc] Introduce deferred fixed ranges
> 
> Fixed ranges are used to express register constraints in the
> allocator. This change splits these fixed ranges into one for
> normal code and deferred code. The former are handeled as before
> whereas the latter are only made visible while allocating
> registers for deferred code.
> 
> This prevents forward looking decisions in normal code to be
> impacted by register constraints from deferred code.
> 
> Change-Id: I67d562bb41166194e62765d5ab051bc961054fc7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1477742
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60322}

Change-Id: I1a31150256eb5608db985b144aab7ea457169d0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530810
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60364}

'third_party/android_tools/sdk' is being replaced with 'third_party/android_sdk/public'.

This CL updates our DEPS pointing to the old path.

Note: 'android_tools' dependency is duplicated with the new path since there are users of the old and new at the same time.

R=machenbach@chromium.org
CC=​sergiyb@chromium.org

Bug: chromium:943614
Change-Id: I9baa2b02900559e64d8f0f99161e23ad5acd0e05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532068Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60363}

This reverts commit 9d167f57.

Reason for revert: There is a crash on https://ci.chromium.org/p/v8/builders/ci/V8%20Win32/20026

Original change's description:
> [wasm][anyref] Add support of call-indirect for multiple tables
> 
> With this CL it is possible to use any anyfunc table in call-indirect,
> not just the first table.
> 
> The current implementation is based on runtime calls. This is just an
> initial implementation which should be replaced by a
> dispatch-table-based eventually. However, this implementation allows
> us to move forward with the anyref proposal implementation.
> 
> R=​mstarzinger@chromium.org
> 
> Bug: v8:7581
> Change-Id: I57d09b18add7f525555bf7c949aef17a64b0e7c5
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530801
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60360}

TBR=mstarzinger@chromium.org,ahaas@chromium.org

Change-Id: Iba4b84078aa070498be7e79212970b94595f5757
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7581
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532069Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60362}

Previously, the builtin BigIntToWasmI64 and its calling descriptor had
an inconsistent name, not reflecting the signature which is i64 to BigInt.

This CL removes BigIntToWasmI64 in favor of I64ToBigInt. Also for
consistency the Wasm tranpoline has been renamed from BigIntToWasmI64
to WasmI64ToBigInt.

Change-Id: I4125ee99a7358797181770f413db70affa657d5c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532065
Auto-Submit: Sven Sauleau <ssauleau@igalia.com>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60361}

With this CL it is possible to use any anyfunc table in call-indirect,
not just the first table.

The current implementation is based on runtime calls. This is just an
initial implementation which should be replaced by a
dispatch-table-based eventually. However, this implementation allows
us to move forward with the anyref proposal implementation.

R=mstarzinger@chromium.org

Bug: v8:7581
Change-Id: I57d09b18add7f525555bf7c949aef17a64b0e7c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530801
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60360}

The array allocated in {SetInterpreterRedirection} was accidentally
left uninitialized, which could result in later calls to
{has_interpreter_redirection} to return true. In that case, we would
not patch the jump table when publishing the code, and would then crash
during execution.

This was uncovered by an unrelated change. It's covered by existing
tests though, we were just lucky so far that the relevant bits were 0
for some reason.

R=mstarzinger@chromium.org

Change-Id: I712200cb0c9f2a9c828f6a9a502e6307dc438bd3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532060Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60359}

This is just one small unit test for now. As we expect to adapt the
encoding this is more of an exercise than exhaustive testing.

Bug: v8:9003

Change-Id: I8f59043c3f7acbb6169254ec6d6ae13251d1054f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1526010
Commit-Queue: Frederik Gossen <frgossen@google.com>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60358}

R=jgruber@chromium.org

Bug: v8:8834
Change-Id: I4406208b20481e71aaa83070e02017a6184eac25
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530811Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60357}

This skips two tests not suitable for gc fuzzing. Previous tests marked
PASS,FAIL are also skipped now, since endurance fuzzing was deprecated.

NOTRY=true

Bug: v8:8959
Change-Id: I0b13212da31457ad4da32fa9c1097dc9e5e9dc11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528433Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60356}

NOTRY=true

Bug: chromium:933093
Change-Id: Ic3c164d72a74def2b3ad559a67163d7f497caa9c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528434Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60355}

This is a reland of f8962ae1

Original change's description:
> Preparing v8 to use with python3 /test
>
> There are now less that 400 days until the end of life
> of Python 2(aka _legacy_ Python) https://pythonclock.org/ .
> The code compatibility check for python2 and python3
> used the following tools: futurize, flake8
> You can see the reports here: https://travis-ci.com/bmsdave/v8/builds
>
> This CL was uploaded by git cl split.
>
> Bug: v8:8594
> Change-Id: Idbf467daf629a4e808345a6a88036c2a3f259138
> Reviewed-on: https://chromium-review.googlesource.com/c/1470121
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59679}

Bug: v8:8594
Change-Id: I8c1a8d6593a4a927d56d37dada2c704062e842cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1484300Reviewed-by: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60354}

This reverts commit 62a8bdca.

Reason for revert: Test times out on atom

Original change's description:
> [js-perf-test] Add more WeakMap perf tests
> 
> Change-Id: I46eb94e58fc4da55cb1b2adb9ffdbb09e5e33a5d
> Bug: v8:8557
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530800
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60326}

TBR=ulan@chromium.org,jarin@chromium.org,sigurds@chromium.org

Change-Id: I88ae85bea2ad04db11137a602bd3d8ee6978fa04
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8557
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532061Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60353}

Wasm Compilation hints are now used when
{--experimental-wasm-compilation-hints} is set to create compilation
units as suggested. Hints regarding the compilation strategy, e.g. lazy
compilation, are ignored for now.

Bug: v8:9003

Change-Id: Id275537db375e425e872b0a05b587931c829c865
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524202
Commit-Queue: Frederik Gossen <frgossen@google.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60352}

Omit user roots when raw heap snapshots are used, i.e., when
the gn flag v8_enable_raw_heap_snapshots is enabled. For regular
Chrome production builds this is not the case.

Blink CL: https://crrev.com/c/1529096

Bug: chromium:936797
Change-Id: I5ae0ec1ecfab9a76352d8ce927d1c40e707262cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528994
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Alexei Filippov <alph@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60351}

SaveFlags previously worked by re-setting the flags using the command
line. Unfortunately, this could reset flags being used by concurrent
processes, which would cause TSAN issues.

Now, SaveFlags stores a copy of the state of all flags on creation, and
only resets changed flags in its destructor. It does this by (ab)using
the flag-definitions.h pseudo-header, adding a new mode to that header
which applies an includer-defined macro to each flag definition.

Change-Id: I4c156ecb36b4b7c05402138088266465d31e33b6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530809Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60350}

This CL includes a revert of [1] with thakis@'s proposed fix at [2].  Verified a
build with the below gn args works on Linux:

target_os = "win"
target_cpu = "x86"
is_debug = false
is_official_build = true
is_component_build = false
use_goma = true
enable_nacl = false
use_custom_libcxx = true

[1] https://chromium.googlesource.com/v8/v8.git/+/93ee541417b6f5904072c0ecdfc6fc041811b489
[2] https://bugs.chromium.org/p/chromium/issues/detail?id=942347#c2

BUG=chromium:942347
R=machenbach
CC=thakis

Change-Id: I34f5744a9f600efbc075f4b5ba8d1c66bff46ae6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529250
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60349}

It doesn't seem to work properly, use _v8_internal_Get_Object until
we can think of a better workaround.

Bug: v8:8994
Change-Id: I47496d442f5b62e6cb78edcdf35fe1ac1aad2084
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529005Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60348}

Converted JSGeneratorObject, JSAsyncFunctionObject , JSAsyncGenerator to torque.

Change-Id: I6eb2463d66c118c60fee472776a471120641344c

Bug: v8:8952
Change-Id: I6eb2463d66c118c60fee472776a471120641344c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1512472
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60347}

R=neis@chromium.org,bmeurer@chromium.org

Bug: v8:9002
Change-Id: I778585b8a76561531fd8c6713e48b3a96cf40351
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528233Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60346}

WasmRunner provides CheckCallViaJS, which calls a wasm function through
JS and checks its result.

There are currently two overloads, one that takes a variable number of
arguments, and another more general 4-argument version that takes an
array of arguments. This means if you run code like:

    r.CheckCallViaJS(0, 0, 0, 0);

The overload resolution kicks in, and chooses the general version, which
will always segfault.

This CL renames the general version to `CheckCallApplyViaJS` so the
above example will call the variable-argument version instead.

Change-Id: I14a742c467692e09e84f03504cec2306a794fc24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529990Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60345}

This is a follow-up CL from https://chromium-review.googlesource.com/c/v8/v8/+/1432597
Indices of first and last symbol properties are recorded and used on a second iteration of DescriptorArrayForEach() to potentially reduce the iteration range

Bug: v8:6705
Change-Id: Iac73909d138214d1128e935eff686f2f058e17f7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1516021
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60344}

NOTRY=true

Bug: v8:8964
Change-Id: I63e2ab53f3466a86b498c56fac1b296f1bd4d904
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530818
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60343}

Change-Id: I94ae52c609c591d95ef0f71cba45e25ef80c9a77
Bug: v8:9008
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529931Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60342}

R=mstarzinger@chromium.org

Bug: v8:7581
Change-Id: I93044dc0065d1d0146ec9b5190e50ca63ce94f4e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530808Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60341}

This reverts commit 4f051fd5.

Reason for revert: Fails with custom snapshot on GC stress - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/24855

Original change's description:
> Reland "[ptr-compr][x64] Temporarily enable pointer compression on x64"
> 
> This is a reland of 589d1a6b
> 
> Relanding after fixing TSan and UBSan issues.
> 
> Original change's description:
> > [ptr-compr][x64] Temporarily enable pointer compression on x64
> >
> > ... and make sure that the x64 ptr-compr bots proceed testing V8 without
> > pointer compression in order to keep testing the full pointer mode.
> >
> > Bug: v8:7703
> > Change-Id: Iee725deda813425a6f0722948b54976154f50909
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1497139
> > Reviewed-by: Michael Hablich <hablich@chromium.org>
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#60230}
> 
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng,v8_linux64_tsan_rel
> Bug: v8:7703
> Change-Id: Ied4e7bacf99c9d63e0459613fec522273f595de8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523327
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60339}

TBR=machenbach@chromium.org,hablich@chromium.org,leszeks@chromium.org,ishell@chromium.org,verwaest@chromium.org

Change-Id: Ia06829e9dfdf09501ceebc0eef175d3261969d1f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7703
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng, v8_linux64_tsan_rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1531120Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60340}

This is a reland of 589d1a6b

Relanding after fixing TSan and UBSan issues.

Original change's description:
> [ptr-compr][x64] Temporarily enable pointer compression on x64
>
> ... and make sure that the x64 ptr-compr bots proceed testing V8 without
> pointer compression in order to keep testing the full pointer mode.
>
> Bug: v8:7703
> Change-Id: Iee725deda813425a6f0722948b54976154f50909
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1497139
> Reviewed-by: Michael Hablich <hablich@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60230}

Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng,v8_linux64_tsan_rel
Bug: v8:7703
Change-Id: Ied4e7bacf99c9d63e0459613fec522273f595de8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523327
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60339}

Bug: v8:7703
Change-Id: I497fe7e4ba81acbda8564142959f823c5195c5eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529008Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60338}

Due to ppc having a fixed 4 byte instruction length, changing
ByteChunk length from 8 to 4 bytes will fix any padding issues
while generating the "embed.S" file.

Change-Id: Ide799908effd88d5387e97627917b095fcc3051c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524720
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60337}

Bug: v8:8997
Change-Id: If47a9c4d580b29f67eaadc4b129279b085e428b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530812
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60336}

This reverts commit 89a5dd36.

Reason for revert: android_sdk tool path change breaks our build

Original change's description:
> Update V8 DEPS.
> 
> Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e8b8ab7..874a2b0
> 
> Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/a14f996..a2a4845
> 
> Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/4e9bccd..d8c847c
> 
> Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/24b5f90..b542cca
> 
> Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/efecb0b..8b6d3f9
> 
> Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/3dd606a..e110dc2
> 
> TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org
> 
> Change-Id: I2138e400fecdd7467664ea51ce02b8602f7d7a11
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530199
> Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
> Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/master@{#60333}

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org,v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com

Change-Id: I48efece3b21d40c841f3c3d291f86652281a1772
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530813Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60335}

Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel
Bug: v8:7703
Change-Id: I3511710cead1c18b75783f71af3127693e7f17fd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529007
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60334}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e8b8ab7..874a2b0

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/a14f996..a2a4845

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/4e9bccd..d8c847c

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/24b5f90..b542cca

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/efecb0b..8b6d3f9

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/3dd606a..e110dc2

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

Change-Id: I2138e400fecdd7467664ea51ce02b8602f7d7a11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530199Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#60333}

Port 1c154540

Original Commit Message:

    On LoadCodeObjectEntry check for IsOffHeapTrampoline instead of
    BuiltinIndexOffset so LoadCodeObjectEntry can correctly jump to the
    on-heap trampoline when we use --interpreted-frames-native-stack.

R=mat@mmarchini.me, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, miladfar@ca.ibm.com
BUG=
LOG=N

Change-Id: I12cb669743bc674bd4f151f4348f763c5bd73647
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529258Reviewed-by: Milad Farazmand <miladfar@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#60332}

This way d8 can use a read-only mapping for its input file. Otherwise,
it would require write access for reading the sources.

Bug: v8:8997
Change-Id: I8e117f0a3d9c125ffd1dc1682d5af04b3f6287c2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530804
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60331}

On 64 bit Windows, the OS stack walking does not work because the V8 x64
backend doesn't emit unwinding info and also because it doesn't emit ABI
compliant stack frames. See
https://docs.google.com/document/d/1-wf50jFlii0c_Pr52lm2ZU-49m220nhYMrHDi3vXnh0/edit
for more details.

This problem can be fixed by observing that V8 frames usually all have the same
prolog and epilog:

push rbp,
mov rbp, rsp
...
pop rbp
ret N

and that it is possible to define XDATA (UNWIND_CODEs) that specify how Windows
should walk through V8 frames. Furthermore, since V8 Code objects are all
allocated in the same code-range for an Isolate, it is possible to register a
single PDATA/XDATA entry to cover stack walking for all the code generated
inside that code-range.

This PR contains changes required to enable stack walking on Win64:

EmbeddedFileWriter now adds assembler directives to the builtins
snapshot source file (embedded.cc) to emit additional entries in the .pdata and
in the .xdata section of the V8 executable. This takes care of stack walking
for embedded builtins. (The case of non-embedded builtins is not supported).
The x64 Assembler has been modified to collect the information required to emit
this unwind info for builtins.

Stack walking for jitted code is handled is Isolate.cpp, by registering
dynamically PDATA/XDATA for the whole code-range address space every time a new
Isolate is initialized, and by unregistering them when the Isolate is
destroyed.

Stack walking for WASM jitted code is handled is the same way in
wasm::NativeModule (wasm/wasm-code-manager.cpp).

It is important to note that Crashpad and Breakpad are already registering
PDATA/XDATA to manage and report unhandled exceptions (but not for embedded
builtins). Since it is not possible to register multiple PDATA entries for the
same address range, a new function is added to the V8 API:
SetUnhandledExceptionCallback() can be used by an embedder to register its own
unhandled exception handler for exceptions that arise in v8-generated code.
V8 embedders should be modified accordingly (code for this is in a separate PR
in the Chromium repository:
https://chromium-review.googlesource.com/c/chromium/src/+/1474703).

All these changes are experimental, behind:

the 'v8_win64_unwinding_info' build flag, and
the '--win64-unwinding-info' runtime flag.

Bug: v8:3598
Change-Id: Iea455ab6d0e2bf1c556aa1cf870841d44ab6e4b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1469329Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60330}

This is a reland of 8f1c985c

Original change's description:
> [heap] Reduce page size to 256KB
> 
> The page size of PPC is kept unchanged because PPC has larger
> physical pages (64KB).
> 
> Bug: chromium:852420
> 
> Change-Id: Ib888ea00a476ff103e00211dbb439186148ef81e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1481631
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
> Cr-Commit-Position: refs/heads/master@{#60296}

Bug: chromium:852420
Change-Id: Id0fbe4759f6fa750bc00100ca521453317dff9ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1529006
Auto-Submit: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60329}

Change-Id: I878bc11ac8d4988b608507bced1363129c29a179
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1528993
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60328}

This extends the support for the "except_ref" type on global variables
to support mutable globals, as well as importing and exporting such
globals. Test coverage is also increased.

R=ahaas@chromium.org
TEST=mjsunit/wasm/exceptions-global
BUG=v8:8091

Change-Id: I816406e322ffb574a4f054947682491e7b40335f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530802Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60327}

Change-Id: I46eb94e58fc4da55cb1b2adb9ffdbb09e5e33a5d
Bug: v8:8557
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1530800Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60326}