Port d36f596e

Change-Id: I13c9d23bb06841e1f6cbb07c68968fb3cc9eb01a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3573784
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#79836}

This CL adds support for interacting with CpuProfile with their integer
id.
A String ID is problematic because it forces an allocation when stopping
or cancelling a Profiler which can happen during a GC when this
is not allowed.

Change-Id: I9a8e754bd67214be0bbc5ca051bcadf52bf71a68
Bug: chromium:1297283
Co-Authored-By: Nicolas Dubus <nicodubus@fb.com>
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3522896Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Corentin Pescheloche <cpescheloche@fb.com>
Commit-Queue: Corentin Pescheloche <cpescheloche@fb.com>
Cr-Commit-Position: refs/heads/main@{#79835}

Bug: v8:12518
Change-Id: Ie22303416749affc0629d60fbed6f9dc4288b09d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3494443Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: David Benjamin <davidben@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79834}

Bug: v8:12744
Change-Id: I3e356c16554e8bc19afc06b18f4afd7fed2f228e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3563540
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79833}

Embedders can currently specify a callback for OOM errors during
Isolate initialization. However, there are cases where an OOM error can
be thrown in a context where we don't have access to an Isolate, for
example on a task posted to a worker thread. This CL introduces an
initialization API to allow the embedder to specify a process-wide OOM
callback.

Bug: chromium:614440
Change-Id: I326753d80767679f677e85104d9edeef92e19086
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3561916Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Kevin Babbitt <kbabbitt@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#79832}

IM::Finalize() was merely finishing marking through the incremental
marking in the atomic pause. Avoid the Hurry() call since the marking
worklists would anyways be drained with parallel marking.

Bug: v8:12775
Change-Id: Ice72a8bb5f900368eadec7f62bf18e03d568454b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574547Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79831}

With kLazy deopts gone, we can remove the stored DeoptimizeKind from
Deoptimize nodes and all related spots - all Deoptimize nodes are
eager deopts.

Bug: v8:12765
Change-Id: I8e727e046c498198e50d9b7dba25442fb54f5da9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3568456
Auto-Submit: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79830}

Also add a mixin for using the single-threaded default platform instead
of swapping it in with SetPlatformForTesting.

Bug: v8:12781
Change-Id: I304303e58ed713e5558d108cd7eb826c17abb40f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574553
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79829}

Currently, v8_presubmit uses the system version of depot_tools for C++
and JS linting. This is an issue for branches which rely on a specific
depot_tools version for linting. This CL proposes the use of the
depot_tools version defined in DEPS.

This change was evaluated in https://crrev.com/c/3571813. The first
v8_presubmit attempt uses the system-defined depot_tools version, while
the second attempt is rebased on this CL and uses the DEPS defined
version.

Bug: v8:12743
Change-Id: I87e14ea5c1e3dc20b34106ff56f608d55ec3253d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571805Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Alexander Schulze <alexschulze@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79828}

Currently, the category named “(compiled code)” contains Code,
SharedFunctionInfo, and Script objects. However, there are various other
object types that are allocated per script function, such as
BytecodeArray and FeedbackVector. There are also plain FixedArrays which
are used for function-specific data such as polymorphic feedback and
code deoptimization data. I propose we move all of this to the
“(compiled code)” category, because this memory usage is related to the
number of functions in the script, the size of those functions, and/or
the number of times those functions have been called.

Bug: v8:12769
Change-Id: Ib5e0265a9ef88063596c17419f5b65f683156c52
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3569876Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#79827}

This is no longer actively used.

Change-Id: I88b0695732ead8652a21ed5d59f3d9752c0c88d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574551Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79826}

A worker might be terminated while creating a new Realm. While this was
handled mostly correctly already, a DCHECK was places slightly too
early, which is fixed by this CL.
Also, we avoid printing an error message if we fail to install an
extension due to isolate termination. As this is externally triggered,
it's not really an error condition.

R=jkummerow@chromium.org

Bug: chromium:1313475
Change-Id: I67b7fd27002d9b9a33439378d8336fefb2a2371a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571811Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79825}

A lot of the space/chunk methods can be trivially marked as const.

There are more methods that can be made const but these will require
creating new const object iterators, so those are left out for now.

Bug: v8:12612
Change-Id: I753b8b3f7a200ecf255596c7825917e4eb600b81
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571815Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79824}

Looks like historical leftovers from the time when we had "pixel arrays"
and external array elements kinds. See
https://codereview.chromium.org/1262583002

Bug: v8:11111
Change-Id: I288d47ae802218737bd6226cbb999c3289d1dbaf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574548Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79823}

This CL only refactors code in the sweeper without changing behavior.

This method can be simplified by moving duplicate code into new methods.
Also move definition of FreeRangesMap into TypedSlotSet and replace all
usages of that raw map type with that type-alias.

Since we are already here, remove the unused argument in
Sweeper::FreeAndProcessFreedMemory.

Bug: v8:12760
Change-Id: Ifa1848b456aef7955eccbaafc00df55fbcbc385c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574542Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79822}

Similar to what we did for FunctionMirror before in
https://crrev.com/c/2887508, we also need to avoid running user
JavaScript for DateMirrors.

This also refactors the ToDateString logic a bit.

Fixed: chromium:1311613
Change-Id: I793b86106765550a9aa449f85f0766840081cc58
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571896Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79821}

Change the unittest runner to no longer uncondtionally set up a default
platform in the "environment", but to instead make platform set-up part
of the "mixin" framework for test fixtures.

Requires modifying some tests that expect the platform to be available,
and all flag implications resolved, before the mixin constructors run.

We still keep the environment for setting up the process for cppgc. This
process setup can only be done once per process, so it can no longer use
the platform -- that's ok though, the page allocator used by cppgc's
process initialisation doesn't have to be the same as the platform's so
we can just pass in a separate new one.

Change-Id: Ic8ccf39722e8212962c5bba87350c4b304388a7c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571886Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79820}

TearDown was actually redundant and can be replaced with the dtor.

Bug: v8:12612
Change-Id: Idc4a77c3f20372a53b0003cda6fb00ae7ec0035c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571806Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79819}

Replace by std types defined in <type-traits> since C++17.

R=mslekova@chromium.org

Bug: v8:12425
Change-Id: I7ec8454634ecb63a3da4f93412d7a6c5002bb7c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3572045Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79818}

Bug: v8:12503
Change-Id: I81d02231b7e40fb0ed487de128ffaedcd3cd2126
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571898Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79817}

Reduce the dispatching overhead in the hottest loop when parsing log-lines.

- Using a JSMap we can avoid internalizing strings
- Preprocess the dispatch table and only have varArgs or functions as
  parsers
- string[] seems to be slightly faster than string.charAt()

Bug: v8:10644
Change-Id: I03b13bdeecda1ad037191ff74e05142ceeb6533c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571890Reviewed-by: Patrick Thier <pthier@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79816}

The 'ForRegs' method is not needed for clarity of the code, it's pretty
clear what to construct a register list from. Hence turn the static
{LiftoffRegList::ForRegs} method into a constructor. This makes the code
more concise.

Also, turn the for loop into a C++17 folding expression, which might
generate better code because the loop will automatically be unrolled.

R=thibaudm@chromium.org

Bug: v8:12425
Change-Id: Ic4446f23022db5f17420303d45b9c15fa5daff60
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3572041Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79815}

This CL adds additional checks for typed slots cleanup in the sweeper:

1) Old-to-old typed slots should never be removed during sweeping. Such
slots are only ever recorded on live code objects (which are never
e.g. right-trimmed or invalidated).

2) Old-to-new typed slots should never be removed when sweeping
lazily or concurrently. New space is empty after a full GC, therefore
the old-to-new typed slots are also cleared during a full GC. The main
thread can record new slots but not in free memory.

Bug: v8:12760
Change-Id: I7b507c862e43a15437e8ee609c6c2af0abf3a5ec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3568479Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79814}

This is a reland of commit 54e360d1.
The two WasmGC cctests which require SSE4.1 support in Liftoff are now
skipped, so we can keep disallowing any bailout (even for missing CPU
features) in --liftoff-only.

Original change's description:
> [wasm] --liftoff-only should disable --wasm-dynamic-tiering
>
> A Liftoff only configuration should never tier up to TurboFan, hence add
> a proper implication to disable dynamic tiering if --liftoff-only is
> set.
> Also, add a DCHECK to ensure we never accidentally compile with TurboFan
> if --liftoff-only is set.
>
> R=jkummerow@chromium.org
>
> Bug: v8:12281
> Change-Id: Ia9b81add503cc939f59fde3f4d3bb67252facf2c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3569741
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79779}

Bug: v8:12281
Change-Id: I334bd81f75c3ef6d31b6117da5ef59a33fb46ae2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3572043Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79813}

Remove the pre-C++17 implementation of void_t, just use std::void_t now.

R=omerkatz@chromium.org

Bug: v8:12425
Change-Id: Iabf72f1540ddb4db666e5a74f169f73546241c1f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571888Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79812}

Change from V8_DEPRECATE_SOON to V8_DEPRECATED. It turned out that we
don't have to make changes in chrome code, so we can go to deprecated
right away.

Bug: chromium:1310790
Change-Id: I1bd529536d3a0098f11f13b3e44fe3dbc80eed04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571897Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Stephen Röttger <sroettger@google.com>
Cr-Commit-Position: refs/heads/main@{#79811}

This reverts commit 8ba60b7a.

Reason for revert: code_serializer failures: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20debug/38940/overview

Original change's description:
> [string] Non-transitioning shared strings
>
> Instead of transitioning shared strings to ThinString on
> internalization, use a forwarding table to the internalized string and
> store the index into the forwarding table in the string's hash field.
>
> This way we don't need to handle concurrent string transitions that
> modify the underlying string data.
>
> During stop-the-world GC, live strings in the forwarding table are
> migrated to regular ThinStrings.
>
> Bug: v8:12007
> Change-Id: I6c6f3d41c6f644e0aaeafbf25ecec5ce0aa0d2d8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3536647
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Jakob Linke <jgruber@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Patrick Thier <pthier@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79801}

Bug: v8:12007
Change-Id: I740904f3edfc395331f06c7218e89476b06b0563
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3574543
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#79810}

Change-Id: Ibc256e202a75f7dbcba27dad2b591cf45738b005
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571900
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79809}

Change-Id: Ia574baaa796f1b2d6feea3e76364c9c417fb8ceb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571899
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79808}

* When the source node is above the target node we draw curved (cubic bezier) lines.
* Else, we fallback to rectangular lines.

Change-Id: Ic80245c7b449942e4477f0056e63618cfbeaaaf7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3565715Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Harshal Nandigramwar <pro.bbcom18@gmail.com>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79807}

Report per-cycle incremental mark/sweep statistics to the Recorder API.
These will be used by Blink to populate UMA histograms such as
V8.GC.Cycle.MainThread.Full.Incremental.(Mark|Sweep).
Also, report time spent in starting incremental marking, used by Blink
to populate V8.GC.Event.MainThread.Full.Incremental.Mark.Start.

Bug: chromium:1154636
Change-Id: Iad205471f3b20843b7e439f47c0d681e840c9043
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3568480Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79806}

With this CL, spilled parameters with ref type in a call to wasm
function, will be placed at a consecutive area in the generic
JSToWasmWrapper frame as WasmCallDescriptor expected.

Bug: v8:12722
Change-Id: I8b82f35b712a32b87abf5100ec46ee499a8178bc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3563445Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79805}

This enabled dynamic tiering by default in V8. Chromium overwrites the
default, so this CL by itself has no effect on Chrome users, but a
similar CL will land in the chromium repo.

R=mslekova@chromium.org

Bug: v8:12281
Change-Id: Iaa6d77dc80063f3c4e1d005c371573fc70c698aa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3568449Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79804}

Use C++17's std::conjunction instead.

R=leszeks@chromium.org

Bug: v8:12425
Change-Id: I004a1bb4fe1b09f441f8822075a72fd20fc90fec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3570429Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79803}

This flag was a leftover from very early Turbofan days and serves no
purpose. Non-OSR TF code automatically uses function context
specialization (FCS) when appropriate without looking at the flag
value. OSR TF code should never use FCS since it is cached by the
SharedFunctionInfo (not by the JSFunction).

Bug: v8:12161
Change-Id: Ifb5a10918dbdf34a7164f7e665a230698b793e9e
Fixed: chromium:1313419
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571895
Auto-Submit: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79802}

Instead of transitioning shared strings to ThinString on
internalization, use a forwarding table to the internalized string and
store the index into the forwarding table in the string's hash field.

This way we don't need to handle concurrent string transitions that
modify the underlying string data.

During stop-the-world GC, live strings in the forwarding table are
migrated to regular ThinStrings.

Bug: v8:12007
Change-Id: I6c6f3d41c6f644e0aaeafbf25ecec5ce0aa0d2d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3536647Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79801}

Oilpan minor GC currently doesn't support running with the stack. The CL
changes minor GCs to run only when running from task.

Bug: chromium:1029379
Change-Id: I96552772e9c3b653a137f48bbaae44278db8f014
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3571891Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79800}

This CL introduces the --separate-gc-phases flag, which prevents that young and old generation GCs can happen at the same time. When incremental marking is in progress and a young generation GC triggers, marking is forced to finish and the full collection takes care of the young generation.

Bug: v8:12503
Change-Id: Ia3e4814f46bff0fdc404b0ac618dfd48fe7cf20c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3351973Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79799}

Only remove old-to-old slots during a GC, but DCHECK that the
old-to-old-slot set is empty after a full GC.

Previously we simply removed from the remembered set during and outside
the full GC. We now have a flag to DCHECK this more precisely.

Bug: v8:12760
Change-Id: Ie6adc3f47a700497aaa818da0e83d6cb94e3c75d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3562981Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79798}

Port commit 1ff685d8

Fixed: v8:12765
Change-Id: Ia5ac9f06a70a11c3d7a9d97f6772f8f37db0df6f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3573114
Auto-Submit: Yu Liu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#79797}