Dynamic index generation used as starting seend boosts performance for
Jobs that have many work items. This is taken from
https://source.chromium.org/chromium/chromium/src/+/master:base/task/job_perftest.cc;l=30?q=job_perftest&ss=chromium

Change-Id: Ie1ba432808f07498f90ab4c0af419b8f9b72e342
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2405799
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69854}

Bug: v8:7748
Change-Id: I463c7472ebaa5b4092b7f0e69e259abbf9c3bc06
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2390769
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69853}

... by unparking the local heap before accessing the handles.

Bug: v8:7790
Change-Id: I0910fd8ad2a1e9cbbf312acb4f26358a09891f0f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404455Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69852}

Only for the interpreter.

Change-Id: I2456a7d6b385b3b8ebcb3ff8782ea5586289bea6
Bug: v8:10201
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400343
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69851}

FLAG_local_heaps needs to be set before creating the context, otherwise
the StressConcurrentAllocatorTask is already started. Setting the flag
then races with background thread, which checks FLAG_local_heaps while
creating LocalHeap.

Bug: v8:10315
Change-Id: If6de748ec174dffb94a2582d24e37d24586ee95a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404823Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69850}

Currently, the generic wrapper is used for i32 and i64 params and 0 or 1
i32 return value.

Bug: v8:10701
Change-Id: I8c47e78fa9beeda01bdb647e1fcf9ebe6baf1ee4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403243
Commit-Queue: Eva Herencsárová <evih@google.com>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69849}

NOTRY=true

Bug: chromium:1126457
Change-Id: I5239fe552e71d7a9a20a07188a368fd57429142a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404449
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69848}

Bug: chromium:1126467
Change-Id: Iae955b2fc832703f208e279c5bc4dff9c5b8e5cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400996Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69847}

This reverts commit 853efc77.

Reason for revert: More TSAN failures: https://ci.chromium.org/p/v8/builders/ci/V8%20NumFuzz%20-%20TSAN/11176

Original change's description:
> Reland "[offthread] Enable off-thread finalization in --future"
> 
> This is a reland of ff0c5cfa
> 
> Relanding after fixing TSAN failure in https://crrev.com/c/2404767.
> 
> Original change's description:
> > [offthread] Enable off-thread finalization in --future
> >
> > Enable the new LocalHeap-based off-thread finalization behind --future.
> >
> > Bug: chromium:1011762
> > Change-Id: I4b33fc300a34530d75aa1a3e197e0d1326994efa
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403252
> > Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> > Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#69813}
> 
> Bug: chromium:1011762
> Change-Id: I552a2668391707ee69162eb94143daa7c11721d6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404772
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69841}

TBR=ulan@chromium.org,leszeks@chromium.org,verwaest@chromium.org,dinfuehr@chromium.org

Change-Id: I291c16272a3fd02ee3afa23e2af7e66bae82a92e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1011762
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404824Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69846}

We used to store MinimorphicPropertyAccessInfo indexed on the feedback
slot id. This works fine when there is no inlining but returns the
wrong access information when functions are inlined. Index it
based on FeedbackSource to avoid these problems.

Bug: v8:10582,chromium:1125871
Change-Id: Id01010f3153f7e21495d73899a8604a64417ae95
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401426
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69845}

Bug: v8:10880
Change-Id: I7a9ba96e4b0c83565c4749101082c661e21d5ef1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400598Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Frank Tang <ftang@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69844}

Since the AllowHandleDereference scope doesn't happen for
kNeverSerialized (see https://crrev.com/c/v8/v8/+/2402033),
there is no need to have the extra if.

Bug: v8:7790
Change-Id: I4c9f93d2e754625e7b30aee61e2b502161bd60c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404770
Commit-Queue: Georg Neis <neis@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69843}

This optimization does not work when the stack arguments are reversed.

Change-Id: Ib543e6ca234cc70708909e0b3cd474b1309ec40e
Bug: chromium:1126769, v8:10201
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404775
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69842}

This is a reland of ff0c5cfa

Relanding after fixing TSAN failure in https://crrev.com/c/2404767.

Original change's description:
> [offthread] Enable off-thread finalization in --future
>
> Enable the new LocalHeap-based off-thread finalization behind --future.
>
> Bug: chromium:1011762
> Change-Id: I4b33fc300a34530d75aa1a3e197e0d1326994efa
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403252
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69813}

Bug: chromium:1011762
Change-Id: I552a2668391707ee69162eb94143daa7c11721d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404772Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69841}

The problem here was that IncrementalMarking::Step was invoking
new_space()->ResetOriginalTop() which sets original_top to the current
top. IncrementalMarking::Step could be invoked during
InvokeAllocationObservers(), which is called right after acquiring a
new LAB and allocating the first object in it. However this first
allocation might be from generated code with allocation folding enabled.
The generated code might not use all of the memory it allocated and in
that process move top backwards again. Nevertheless
InvokeAllocationObservers() could already set original_top to the
current top. If the generated code later not uses all of that
memory, original_top can be bigger than top.

Fix this problem by ensuring that original_top always equals the LAB
start. Each time LAB start is moved/accounted for, original_top is now
updated as well for the new space. Also IncrementalMarking::Step()
isn't allowed to move original_top anymore.

Bug: chromium:1116278, v8:10315
Change-Id: Ib18a0b07e2665b8ba933555387b84329cbecdf5b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2398519Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69840}

The commit updates the way the usage is printed for cctest to make use
of HelpOptions which allows the usage string to be passed into
SetFlagsFromCommandLine function.

Change-Id: I8dcd48ca8bb7b025f77c0f05ab37ce4f7b6fae04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402032Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69839}

When creating and inserting strings into the string table, we have to
make sure that the writes to the string's fields (including its
characters) are not reordered to after the write of the string into the
table itself.

Thanks TSAN!

Bug: chromium:1011762
Change-Id: Ib8a22e3980f6b5c57561ca23549c1462c4c017c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404767
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69838}

- serializer-*:
In some stress configuration, the new map of x was GC'd at the beginning
of optimization, thus generating a soft-deopt for the store to x (thus
in turn skipping inlining of f).

- native-context-*:
In some stress configuration, f had its feedback flushed.

Bug: v8:10892
Change-Id: Icd9f9c0ba6feb938ae8c3b0031b02b766f2e3f91
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404764
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69837}

Change-Id: Idb5ac9b0d3703e94f33d74318080790d00c4ec45
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401428
Auto-Submit: Georg Neis <neis@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69836}

Bug: v8:7790
Change-Id: Ib0c95f27d21e4aea09dcc9804a800b16440a2fe2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403254Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69835}

Bug: v8:7790
Change-Id: I0e58244a679d5fd7f597c90c6f41ac255024de3a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403253Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69834}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/471a6cd..b3e63d3

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/70f34e0..13bf125

Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/898c6c0..f8517bd

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I42f50f1bd40a05adb6205a94e3d3007a4fc6b5f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2405315Reviewed-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@{#69833}

Fix lowering of functions that returns the result of an
i8x16 or i16x8 operation.

Bug: v8:10507
Change-Id: Ia3b29e69cff7771f85dc5160937cbaf2bbc12b55
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2399049
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69832}

Since we are converting Int64x2 to Int32x4, we should be truncating
the nodes, not sign-extending.

Bug: v8:10507
Change-Id: I09dabdcaaa378842ffb4da5505199c188b5101f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404751Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69831}

Port 360c9294
https://chromium-review.googlesource.com/c/v8/v8/+/2355189

And support storing kS128 value in liftoff.

Change-Id: I4429088bf6205aa24bfa61c2e4dbaf7bdab79132
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402431Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#69830}

This is a reland of f25cb50a

Removed the problematic tests.
The problem with the test was that we try to pop from an empty segment.
GCC flags that as accessing beyond the array (i.e. index is uint16_t
equivalent of -1). Preceding the actual pop is a DCHECK that asserts
the segment isn't empty. In practice, since we have the DCHECK and
access to the segment is always via a Local, this shouldn't be a
problem.
Unfortunately, GCC flags the access regardless. The DCHECK goes through
a function pointer so GCC cannot determine that in our unittest the
DCHECK would crash if index is 0 and the access would not happen (The
indirection was added to allow for test DCHECK handlers that don't
crash, so we can't mark the function pointer as noreturn).

Drive-by: Segment::Pop and Segment::Push rely on the their Local
counterparts checking of emptiness/fullness, so we should always
access segments via Locals. Making the Segment ctor private.

Original change's description:
> Reland "cppgc, heap: Don't eagerly allocate worklist segments"
>
> This is a reland of c99147c6
>
> Original change's description:
> > cppgc, heap: Don't eagerly allocate worklist segments
> >
> > Bug: chromium:1056170
> > Change-Id: I75a6b5f52bfe8dd71abc086e5d1e060759ad7fc0
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2391254
> > Commit-Queue: Omer Katz <omerkatz@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#69778}
>
> Bug: chromium:1056170
> Change-Id: I4633da065976a6b2710d2f23b946fd2af0e65c83
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401425
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Omer Katz <omerkatz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69806}

Bug: chromium:1056170
Change-Id: I7a122d1a2d20cd4e7c824d249975b4d3df30e03e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403251Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69829}

Bug: chromium:1126469
Change-Id: Ia05590ef2e727ce3ac810610f579f6446682e8fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403242Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69828}

Add a bunch of lowering for I64x2 operations. This allows us to enable
most of the I64x2 tests in test-run-wasm-simd.cc.

Most of these lowering are straightforward. The load splat and load
extends need an additional operation to convert the loaded Word32 nodes
to Word64.

Bug: v8:10507
Change-Id: I6c948918c03904d2b6778223a95bb2e34b692a5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401954Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69827}

Tests failed from time-to-time with --stress-concurrent-allocation. So
run those tests with that flag disabled.

Bug: v8:10315
Change-Id: I8a2b9f03d7bcd8a797134510f608dffb78dd1cdf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403257Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69826}

Factor out common loop for copying MutableHeapNumbers in newly copied
objects.

Bug: v8:10763
Change-Id: I6cf2fc52c9ac72253dceaba518deacfde9905a9c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402035
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69825}

This reverts commit abb7cdc9.

Reason for revert: regressions in jetstream2/gaussian-blur_sum

Original change's description:
> [regalloc] Loop-top values can be backedges too
> 
> When counting which backedges conflict with a loop-top phi value, we
> should include values introduced at the start of the loop.
> 
> I don't expect this change to make performance differences on its own,
> but it is a step toward changing the heuristic so that we're less likely
> to introduce unnecessary load/store pairs across the backedge.
> 
> Bug: v8:10606
> Change-Id: I299e388b0b964573119ba0b775d50f398c467c46
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2385715
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#69752}

TBR=sigurds@chromium.org,yolanda.chen@intel.com,seth.brenith@microsoft.com,thibaudm@chromium.org

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

Bug: v8:10606, chromium:1126663
Change-Id: Idde0b7c89f2376ae016e834fa37c38f3d9eb5c1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404020Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#69824}

This reverts commit 120eb388.

Reason for revert: Maybe perturbed GC and caused optimization test to fail: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/33042?

Original change's description:
> Reland "[d8] Add d8 global variable"
> 
> This is a reland of 6798619a
> 
> Original change's description:
> > [d8] Add d8 global variable
> >
> > - Add a a "d8" global variable where d8 can provide helpers.
> >   This in in preparation of adding d8.log for testing our log parsers
> >   written in JavaScript.
> >
> > - Separate d8 helper creation into individual functions.
> >
> > Bug: v8:1064
> > Change-Id: I84e434452463afb93ae403f890d8841b20b00703
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400990
> > Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> > Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#69801}
> 
> TBR=verwaest@chromium.org
> 
> Bug: v8:1064
> Change-Id: I656d550b5ec87dc52dbe6cbbdddf7151ce25031f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403247
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Mythri Alle <mythria@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69819}

TBR=cbruni@chromium.org,mythria@chromium.org,verwaest@chromium.org

Change-Id: If6df69e30b097c78eb0ff2676f5e5c219edfae5b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:1064
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2404323Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69823}

This is a reland of d3b295fa

Got speculatively reverted in https://crrev.com/c/v8/v8/+/2403256 but
doesn't seem to have been causing the TSAN failures

Original change's description:
> [compiler] Replace Symbol with direct reads
>
> Bug: v8:7790
> Change-Id: I49120a6349777fd992a97d697940e79b2e71dbd1
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400988
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69812}

Bug: v8:7790
Change-Id: I459f4bfc881c641258dcc46fc55fce21f9e03dec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403921
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69822}

Recheck flag in StressConcurrentAllocationObserver to allow tests
to not run the StressConcurrentAllocatorTask even though Isolate was
already initialized.

Bug: v8:10315
Change-Id: Ia683458216821c103d1ae455330ebbd32d253905
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403240Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69821}

Bug: v8:10763
Change-Id: I959661854e5b138186406d4d6fda77558200d454
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402878Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69820}

This is a reland of 6798619a

Original change's description:
> [d8] Add d8 global variable
>
> - Add a a "d8" global variable where d8 can provide helpers.
>   This in in preparation of adding d8.log for testing our log parsers
>   written in JavaScript.
>
> - Separate d8 helper creation into individual functions.
>
> Bug: v8:1064
> Change-Id: I84e434452463afb93ae403f890d8841b20b00703
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400990
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69801}

TBR=verwaest@chromium.org

Bug: v8:1064
Change-Id: I656d550b5ec87dc52dbe6cbbdddf7151ce25031f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403247
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69819}

This reflects the change made in chrome:
https://chromium-review.googlesource.com/c/chromium/src/+/2387554

I somehow thoughts that DefaultJob didn't need the fence, but
TSAN detected the same kind of failures after
9e8c54f8 started using AcquireTaskId.

Drive-by: move delegate outside the loop in Join() to avoid releasing
the task_id many times.

Change-Id: I2ab6bf1bd3eeb7a66e39f20a7e0aa61a9c1ebc44
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401964Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69818}

This reverts commit e8976cf9.

Reason for revert: Mark f32x4_cmp as fail, lowering is not fully implemented yet.

Original change's description:
> Revert "[wasm-simd] Stage SIMD"
> 
> This reverts commit 1d2726dd.
> 
> Reason for revert: ODROID failure: https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/15814?
> 
> Original change's description:
> > [wasm-simd] Stage SIMD
> > 
> > SIMD has been pretty stable for a while now, we are not expecting big
> > changes (like opcode renumbers), there might be new instructions added,
> > and they will all be backwards-compatible.
> > 
> > The reference interpreter in the SIMD proposal is now capable of
> > generating JS files for all test cases, so we can now run them.
> > 
> > There is a bit of tweaking necessary, since SIMD tests are in
> > tests/core/simd subfolder in the spec, so we need to change the glob
> > into a find that will traverse into subdirectory.
> > 
> > Bug: v8:10835
> > Change-Id: I1f7e3cf37f21b2aa2537d1e34242da2373bbf626
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2378587
> > Commit-Queue: Zhi An Ng <zhin@chromium.org>
> > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#69793}
> 
> TBR=bbudge@chromium.org,ahaas@chromium.org,zhin@chromium.org
> 
> Change-Id: I3a90c616109ca048691d97ab45698bc15a678e18
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:10835
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402379
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69794}

TBR=bbudge@chromium.org,ahaas@chromium.org,zhin@chromium.org,syg@chromium.org

# Not skipping CQ checks because this is a reland.

Bug: v8:10835
Change-Id: I3d87dd2adba6ada2ec3ebf5e13bff378a74b03e8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2402386Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69817}

This reverts commit ff0c5cfa.

Reason for revert: speculative revert for https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/33146

Original change's description:
> [offthread] Enable off-thread finalization in --future
> 
> Enable the new LocalHeap-based off-thread finalization behind --future.
> 
> Bug: chromium:1011762
> Change-Id: I4b33fc300a34530d75aa1a3e197e0d1326994efa
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403252
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69813}

TBR=ulan@chromium.org,leszeks@chromium.org,verwaest@chromium.org,dinfuehr@chromium.org

Change-Id: I76d883c69a611ae5603c5025a5f525208ca197a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1011762
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403259Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69816}

This reverts commit d3b295fa.

Reason for revert: speculative revert for https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/33146?

Original change's description:
> [compiler] Replace Symbol with direct reads
> 
> Bug: v8:7790
> Change-Id: I49120a6349777fd992a97d697940e79b2e71dbd1
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2400988
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69812}

TBR=neis@chromium.org,solanes@chromium.org

Change-Id: I10f69213e906e9b482ce4f8456ed7d5bcb039051
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7790
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2403256Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69815}