This is a reland of 48b443f6.

While fixing the initial CL, we stumbled upon a few bugs that
we had to fix:

 - CommonOperatorReducer and SimplifiedOperatorReducer were applied
   before and after SimplifiedLowering, but always assumed that it
   was before SimplifiedLowering, and thus had the wrong semantics
   for branches in some cases. They now have an added parameter to
   know which semantics of branch they should use.

 - The lowering of StaticAssert was wrong and could leave kHeapConstant
   in the assert (instead of machine Booleans).

Original change's description:
> [compiler] Simplify "==0" branches in MachineOperatorReducer
>
> Bug: v8:12484
> Change-Id: I0667c7464c0dd71338bc199a24a69248a7a0a525
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3497303
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Owners-Override: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Darius Mercadier <dmercadier@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79379}

Bug: v8:12484
Change-Id: Ibbf5df96fce5ccb04868dc517539479bf69f5703
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3516869Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Darius Mercadier <dmercadier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79528}

This reverts commit cf25b3bc.

Reason for revert: https://crbug.com/1307471. TraceTrait must only be used during marking.

Original change's description:
> cppgc: Rework prefinalizers
>
> Move the check for whether an object is live or dead out of the
> prefinalizer trampoline. Moving it into the backend allows for
> inlining the check which avoids a call to the trampoline for live
> objects.
>
> On catapult benchmarks (e.g. cnn:2021, nytimes:2020), there's often
> ~2k finalizers registered. In order to avoid memory overhead in the
> range of a few KB, we store the fact whether the object points to the
> base object payload in the LSB of the pointer. For caged builds this
> is replaced with just storing the index into the cage for both object
> and base object payload.
>
> Locally saves around ~10% of atomic sweeping processing time which is
> in the order of .05ms.
>
> Bug: v8:12698
> Change-Id: I198205a6b1d57fc2df821ee4e73e53dc6f825ff5
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3497764
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79442}

Bug: v8:12698, chromium:1307471
Change-Id: I5c4e70d46cb99af66c77f0c013625b6af6c6eb8e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3535781
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Cr-Commit-Position: refs/heads/main@{#79527}

Bug: chromium:1304658

Change-Id: I6a82603a7c5de5ae8f5a895990c1a904bbdd39b2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532263
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79526}

There are problems calling WaitForRunningWorkers when we
call quit().
First, suppose the main thread first calls quit(),
and the worker thread calls quit() after the main
thread calls quit(), then sched_yield to wait for
quit_once_ updated to ONCE_STATE_DONE. However
the main thread is WaitForRunningWorkers to wait
for the worker thread to join, thus causing deadlock.

Second, suppose the worker thread calls quit() and empty
the running_workers_ by WaitForRunningWorkers, then
the main thread calls `onExit(isolate, true)` to dispose
the platform and other global data, which will crash other
running workers.

Bug: v8:12219
Change-Id: I333e5aad431daefb1c163f69e66d8e9d5e9bf754
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3518908Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79525}

This reverts commit f198f35d.

Reason for revert: Got enough fuzzer bugs to work on

Original change's description:
> [rab/gsab] Temporarily stage --harmony-rab-gsab to enable fuzzing
>
> Please revert this CL if it causes any trouble!
>
> Bug: v8:11111
> Change-Id: I6061fdc0aed82952f093ede9ecd252be1ac99519
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528495
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79499}

Bug: v8:11111
Change-Id: I9eef57eeba72116cc97c347abe2b56277855b797
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3535779
Commit-Queue: Marja Hölttä <marja@chromium.org>
Auto-Submit: Marja Hölttä <marja@chromium.org>
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Bug: v8:11544
Change-Id: I134b8c786a8dfaef2f4f2509ec5f6c6a009852f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3379232Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79523}

Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/8a5b728..ea8c08d

Fix android filter by changing filter type (Frank Tang)
https://chromium.googlesource.com/chromium/deps/icu/+/ea8c08d

Add "-Wno-deprecated-pragma" (Mark Schott)
https://chromium.googlesource.com/chromium/deps/icu/+/11138de

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,ftang@chromium.org

Change-Id: I86b0e16691dedd48e35c4aa79fee5feeb7701329
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3534847
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Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/5704cd4..a480a08

[nfc] Reformat doc-string in generate_export_header (#1376) (Vy Nguyen)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/a480a08

Fix Bazel build breakage caused by commit 6a894bd. (#1374) (Paul Wankadia)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/808571a

Build `//:benchmark` as a static library only. (#1373) (Paul Wankadia)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/6a894bd

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,mlippautz@chromium.org

Change-Id: Ic2015e271f35597f3b78de84fbe88e5ae1f02d79
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3534848
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Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/3d95907..3444906

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/113dd1b..d8c3754

Rolling v8/buildtools/third_party/libc++abi/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi/+log/a897d0f..93b8dcd

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b3fe2c1..389f33b

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/b199f54..76979da

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/ae5e06d..b007c54

Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/b0676a1..923f5eb

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/b60d34c..a15c2df

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Change-Id: Ifd7ec0fcb5f51d4fb1560ba5ff7e7db544348ad1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3534846
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Bug: v8:12717
Change-Id: I0ffe277dda3eed2073f166f2b93a2f2c611c6d01
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532232Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79519}

Bug: v8:12697
Change-Id: I124f2f0fd3c98d6a5233a0e2a8236a2b15d791fd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532261
Auto-Submit: Manos Koukoutos <manoskouk@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#79518}

This reverts commit 406bcd69.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64/46797/overview

Original change's description:
> [maglev] Finish & enable basic Maglev concurrent tierups
>
> This implements the last bits of basic concurrent Maglev compilation.
> When jobs have been processed, schedule an interrupt to trigger codegen
> and building the Code object on the main thread.
>
> Bug: v8:7700
> Change-Id: I348ade4777ddddf7c3a6b0575d9f51e5fa00c9fb
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528494
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79516}

Bug: v8:7700
Change-Id: I1faa092b96e56149b4db2e271680f39c7af61554
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532231
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79517}

This implements the last bits of basic concurrent Maglev compilation.
When jobs have been processed, schedule an interrupt to trigger codegen
and building the Code object on the main thread.

Bug: v8:7700
Change-Id: I348ade4777ddddf7c3a6b0575d9f51e5fa00c9fb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528494Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79516}

.. into new virtual subclass TurbofanCompilationJob. Update all TF code
to derive from this class. Specifically, the OptimizedCompilationInfo is
TF-specific and now lives in TurbofanCompilationJob.

The motivation behind this is that Maglev now also uses this
infrastructure.

Drive-by: Replace CompilationMode with ConcurrencyMode.

Bug: v8:7700
Change-Id: Iae6d1ffd1c810e2e45cad6c9b4e43d4c82ac54a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528493Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
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Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79515}

In JSCallReducer::ReduceArrayPrototypeShift, add Unsigned32
TypeGuard for index Node used in fast path, avoid representing
kRepFloat64 (Range(1, inf)) to kRepWord64 when converting
input for kLoadElement.

Bug: v8:12632
Change-Id: I2e4b00840dc5462e4351e13a372c33b6272b9ea1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528373Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79514}

Fixes wrong conditional logic in BaselineCompilerTask::Install.
Removes is_compiled(), since CanCompileWithBaseline already
checks for HasBytecodeArray.

Bug: chromium:1307072
Change-Id: I4cc61e2bab8d1fb5a5b253d291c7079b82c3fa44
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532230
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
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Cr-Commit-Position: refs/heads/main@{#79513}

This started out as a minor code move of early-osr logic, but
became a more general refactor of the tiering decisions.

Early-OSR: the intent here is to trigger OSR as soon as possible
when matching OSR'd code is cached. Move this out of ShouldOptimize
(since it has side effects), and into a dedicated function that's
called early in the decision process.

Note that with this change, we no longer trigger normal TF optimization
along with the OSR request - TF tiering heuristics are already complex
enough, let's not add yet another special case right now.

Other refactors:

- Clarify terminology around OSR. None of the functions in TM actually
  perform OSR; instead, they only increase the OSR urgency, effectively
  increasing the set of loops that will trigger OSR compilation.
- Clarify the control flow through the tiering decisions. Notably,
  we only increment OSR urgency when normal tierup has previously been
  requested. Also, there is a bytecode size limit involved. These
  conditions were previously hidden inside other functions.

Bug: v8:12161
Change-Id: I8f58b4332bd9851c6b299655ce840555fb7efa92
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3529448Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
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This reverts commit 9f9f36f8.

Reason for revert: regressed ai-astar on the M1

Original change's description:
> [call reducer] inline Array.prototype.indexOf/includes in js-call-reducer.
>
> - inline Array.prototype.indexOf in js-call-reducer
> - inline Array.prototype.includes in js-call-reducer
>
> Bug: v8:12390
> Change-Id: Idb5669da3019f0f56af0084fccd1d616d4c5098e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3473994
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79461}

Bug: v8:12390, chromium:1306250
Change-Id: I91c666c2f56c30db4f43bb009ee6206ad219f51a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532399
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Change-Id: I3485e5d41cbafae1318c285bf564bc7df4a8c0f8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532189Reviewed-by: Lutz Vahl <vahl@chromium.org>
Commit-Queue: Lutz Vahl <vahl@chromium.org>
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- Restructure the runtime function implementation.
- Rename osr_loop_nesting_level to osr_urgency and add helpers.

The motivation for the latter: I've always struggled with the
`osr_loop_nesting_level` term; it neither matches terminology of
what it's compared against (= the loop depth), nor implies what it's
used for (= osr is triggered when `loop depth < osr nesting level`).

In this CL it's renamed to `osr_urgency` to reflect that as urgency
rises, we consider more and more loops as OSR candidates.

Bug: v8:12161
Change-Id: I194ec5a3f1f02526641af1c7796ee0956b6fd3a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528735Reviewed-by: Patrick Thier <pthier@chromium.org>
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This reverts commit 1289704a.

Reason for revert:
https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac%20-%20arm64%20-%20release/8735/overview

Original change's description:
> [tools] Clean up py2 code
>
> Bug: chromium:1292013
> Change-Id: Ic2c3a197005a2136bb0eda4cbb36d8eb57f42a7c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3523047
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79507}

Bug: chromium:1292013
Change-Id: I48c38209220b775d0caa45f487ed163f78333e0c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3532228
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Bug: chromium:1292013
Change-Id: Ic2c3a197005a2136bb0eda4cbb36d8eb57f42a7c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3523047Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
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Bug: chromium:1292013
Change-Id: If50c18249afe8b75154d4b111485280d158a5582
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3525137Reviewed-by: Liviu Rau <liviurau@chromium.org>
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Bug: chromium:1292013
Change-Id: I8202fed4d59edcc98fff193f3a4b102a5c79d553
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3525136Reviewed-by: Liviu Rau <liviurau@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79505}

Bug: v8:12547
Change-Id: Ie27831b793f214368a003adac24b7c92f1a5fc11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3518426Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79504}

Bug: v8:12707
Change-Id: I411950dc92336f73f10614e75bd64647d4137857
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3523995Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Reviewed-by: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#79503}

CL https://chromium-review.googlesource.com/c/v8/v8/+/3514072 tried to
improve code generation for patterns like "x >> n == k" when n and k
are constant, and to generate instead "x == k << n" (with "k << n"
being computed at compile time).

However, this was also done when "x >> n" was reused later, which
caused "x" to be kept alive longer that it could have, which could
increase register pressure.

This CL thus ensures that this optimization is done only if "x >> n"
has a single use.

Bug: chromium:1305389
Change-Id: I377e120c4825e2a0deb4a5478138da838bcebc77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528987Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
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Change-Id: I2ff012f0da2c536d78e12c7b8f02fe2d28b7b7ea
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3526338Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Vasili Skurydzin <vasili.skurydzin@ibm.com>
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We check if debugger needs to hook into every call when we enqueue
the function to batch and when we compile, but we do not check it
when we install it (that is, set_baseline_code), which is done in
the main thread.

Bug: v8:12713
Change-Id: I81ba221caed1060976e8865174d392a861f2ab24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528988
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
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Please revert this CL if it causes any trouble!

Bug: v8:11111
Change-Id: I6061fdc0aed82952f093ede9ecd252be1ac99519
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528495Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79499}

In text, we should use the properly capitalized "Wasm" instead of
"WASM". In particular for frame output, other frames typically use
CamelCase (like "JsToWasmFrame", "ExitFrame", "InternalFrame"), so Wasm
should do the same.
The "0xa" comment in some assemblers is also outdated, the current tag
we emit for StackFrame::WASM is 0x8 (0x4 shifted by one).

R=jkummerow@chromium.org

Bug: v8:12425
Change-Id: Ic3e00c401b219c28b5424c82efb0f1a9df51690f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3525195Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79498}

JSObject::InitializeBody now checks whether the instance type of the
object being initialized can have embedder data slots around the
initialization logic for these slots. This fixes a performance
regression on certain benchmarks.

To perform this check efficiently, a new instance type,
JSObjectWithEmbedderSlots, is introduced so that the check becomes a
simple range check.

Bug: chromium:1304139
Change-Id: I00c892bc2276e950b59602257ca1c2435c10e517
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3507712Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79497}

This method now handles external pointers in HeapObjects during
serialization by encoding the representation of the external pointer
(sandboxed, raw), the origin (internal, api) and potentially the
external pointer tag. It is currently only used to handle
JSExternalObjects but could, in the future, be extended to handle all
external pointers that need special handling during
serialization/deserialization.

Bug: v8:12700
Change-Id: Ib0747d765ddc632e4ca4ee94521616d0271be0bc
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3521904Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79496}

Implement the Intl.PluralRules.prototype.selectRange (start, end)
of the spec
See https://tc39.es/proposal-intl-numberformat-v3/out/pluralrules/diff.html


https://chromestatus.com/guide/edit/5707621009981440

Design Doc: https://docs.google.com/document/d/19jAogPBb6W4Samt8NWGZKu47iv0_KoQhBvLgQH3xvr8/edit

Bug: v8:10776
Change-Id: Ie9c56df7ce68199492281fdf2483c3d6f822cc9e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3504421Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79495}

Bug: v8:11111
Change-Id: Id6eafbd3a70cd8edd552d06942517ffaf413f568
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3497815Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79494}

Port commit I3cb2a4d386cb92a4dcd2edbdd3fba9ef71f354d6

Besides, clean some useless "SafepointRegister" stuff for MIPS.

Change-Id: I85bc7592faa1a7939330bef8453ea5eff4ac7f71
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3527185Reviewed-by: Yu Liu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#79493}

This reverts commit f01a6098.

Reason for revert: Consistent TSan failures: https://crbug.com/v8/12713

Original change's description:
> [baseline] Enable concurrent sparkplug
>
> Bug: v8:12054
> Change-Id: I1b0ee1a9541a75412b882b259e421aa6e88317da
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3259658
> Auto-Submit: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79485}

Bug: v8:12054
Change-Id: Ide6bbac8c280a1373c5082bbe5356a205f3396c5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3528496
Auto-Submit: Clemens Backes <clemensb@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@{#79492}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/18a1f19..3d95907

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/63a615b..b3fe2c1

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/3481645..b199f54

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/85f3c90..b60d34c

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I5d2149bbec079a8127089d33f38f64f952e9e9cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3526718
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/1fa4e39..8a5b728

Add af and ur to common ICU (Trevor Perrier)
https://chromium.googlesource.com/chromium/deps/icu/+/8a5b728

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,ftang@chromium.org

Change-Id: I313ca3e905c578ecaa6a55916f9011fb67516e6c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3526720
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Cr-Commit-Position: refs/heads/main@{#79490}

This CL implements most parts of the concurrent maglev pipeline.

- MaglevConcurrentDispatcher: controls concurrent jobs.
- MaglevCompilationInfo: holds job-global data, controls handle
  fiddling between the main isolate and local isolates, owns
  job-global state like the Zone.
- MaglevCompilationUnit: same as before, holds per-unit data.

Still missing: job finalization.

Bug: v8:7700
Change-Id: I281178d945e79a0ba97fa2ac7023285d84a16641
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3516036Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79489}