NOTRY=true

Bug: v8:12445
Change-Id: I67bd72e2369ffc0e4afc75e0436d80d3c5c0fae2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3632101Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Auto-Submit: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80515}

This CL adds serialization and deserialization for
packed double array and holey double array.

Bug: v8:11525
Change-Id: Idce22e1c5d707e45127ae972587c6b7808ca2cda
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3640751Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#80514}

Spec text:
https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.era
https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.erayear

Notice this only implement the "iso8601" calendar and we will implement the
code for other calendar later by calling ICU with other Calendar methods.
This CL reduce the differences of testing result between ALWAYS and no_i18n
because the code in no_i18n will not call Calendar era or eraYear and therefore
passed the test even w/o this CL but the ALWAYS tests will cause Temporal
object to internal call era and eraYear and therefore fail if w/o this CL.

Bug: v8:11544
Change-Id: I921fbfbbd26473c238024161eb58b096c38b881b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641938Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80513}

Doesn't do much at the moment beyond not being a baseline frame. Fixes a
DCHECK in tiering that checks the frame type, by removing the frame
lookup there (which wasn't necessary anymore).

Bug: v8:7700
Change-Id: Icecfe27771923d380a7d1dc1c29aa9c5c9dfbf0f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644618
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80512}

We use the invalidate_recorded_slots argument to signal to NotifyObjectLayoutChange whether a particular object layout change
could cause a tagged pointer to be replaced with an untagged value.
In such cases we need our snapshot protocol in order to allow marking
such objects concurrently.

The snapshot protocol consists of two main operations:
  1) Tracing and marking the object black on the main thread before
     performing the unsafe transition.
  2) The concurrent marker needs to read such objects into a buffer
     first and is only allowed to trace it when successfully marking
     that object black.

However, in some cases we were still doing 1) on the main thread when
the concurrent marker didn't use 2) the snapshot buffer anymore. This
CL cleans up this behavior and ensures that 1) and 2) are always paired
together.

Bug: v8:12578
Change-Id: Id83b3de866a80efedf4a72e440cbc767fe3eaea6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644611Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80511}

The budget interrupt in maglev can clobber registers. We need to save
the caller-saved registers before making this call.

Additionally, move the interrupt call into deferred code, and only emit
the interrupt check + call for returns and backwards jumps (i.e. things
that reduce the budget).

Bug: v8:7700
Change-Id: I277e9fdf454ff0f22bf20e7cf9538e3020403c1a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644619Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80510}

Port GN changes in https://crrev.com/c/3596671

No-Try: true
Change-Id: I4d9571ce0d5abcae56a370986db1104e5429b348
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3647347Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80509}

Change-Id: Iad4b34b1c4a85800e8e1d6c01b686dd19e8116a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3600532
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@{#80508}

Port commit fe443a4e

Bug: v8:12284

Change-Id: I19ba180ecc7cd0e5a3b6e5009cc2b8c40074399a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3642243Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#80507}

CompilationSubCache has some complexity regarding generations of tables
which is only used by one subclass, CompilationCacheRegExp. This change
adjusts the class hierarchy so that classes only contain the necessary
member functions.

Bug: v8:12808
Change-Id: I4f4cf15bbf9b80c2de0c18aea82a0c238804759d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3629603Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#80506}

This CL adds two experimental JS builtins to convert between
i16 Wasm GC and JS strings. This is a non-standard experimental
feature only available with the flag --wasm-gc-js-interop.

WebAssembly.experimentalConvertArrayToString(array, start, count)
Convert the `count`-many WTF-16 code units starting at index `start`
into a JS string. Throws a TypeError if `array` is not an i16 array,
or if `start` and `count` are not numbers or not in range.

WebAssembly.experimentalConvertStringToArray(string, sampleArray)
Convert `string` to an i16 array. The `sampleArray` parameter needs
to be an arbitrary i16 array, which is only used to extract the rtt.
Throws a TypeError if `string` is not a string or `sampleArray` is not
an i16 array.

Change-Id: I7ac2f6bd89b8f638427f61da1bb01ccba90d735b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3642301
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80505}

Bug: v8:12284
Change-Id: Ica2564e8b34f8edd9492ef379cf3a3eb5575633d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3642948
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80504}

Bug: v8:12612
Change-Id: Ib24496c1a3789ced50431818874e27886e92a909
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644616Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80503}

Bug: v8:12284
Change-Id: I7f6a4a5182ad61dfdc13faf2ced99fba7d64c9c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3640926Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80502}

Change-Id: Id6c520cd3cc6218fb32fea2c82b0ff8985e2b58e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3627012
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Chong Gu <chonggu@google.com>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80501}

Fixed: v8:12866
Change-Id: Icba2ffc7837bf4942fd4bc741abeb7c98694c2d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644607Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andy Wingo <wingo@igalia.com>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80500}

Change-Id: I933301cf9b81ef6a5cc5ec891611464a1e0a1e48
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3645029
Commit-Queue: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80499}

Bug: v8:12612
Change-Id: I47bf134a9ff57a5c4ace9d35bf023a1c5e248896
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644615Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80498}

Bug: v8:12284
Change-Id: I9d8f9da8ed736d5119e7af4354e1ddd8a255713d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3640925
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80497}

This reverts commit 411a0157.

Reason for revert: crbug.com/1324829 (Canary crashes)

Original change's description:
> Reland "[rwx][mac] Enable fast W^X on Apple Silicon (M1)"
>
> This is a reland of commit e8cac377
> Broken jitless mode is fixed in a separate CL.
>
> Original change's description:
> > [rwx][mac] Enable fast W^X on Apple Silicon (M1)
> >
> > Bug: v8:12797
> > Change-Id: I53bb803dd77db5bdd42b1a1b4b568e63857adf31
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3598861
> > Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> > Commit-Queue: Igor Sheludko <ishell@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#80396}
>
> Bug: v8:12797
> Change-Id: I5436ceced5d4673f3b80d9cacdb3d6e84012c6e7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3635720
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80450}

Bug: v8:12797
Change-Id: If776ccb6ce9f41a84b94409ec5cae91c0915f129
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644620
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80496}

This reverts commit 8278cb50.

Reason for revert: breaking https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20CFI/10778/overview

Original change's description:
> [inspector] Re-enable Debugger#restartFrame
>
> Doc: https://bit.ly/revive-restart-frame
>
> This CL "undeprecates" Debugger#restartFrame and adds a new optional
> "mode" parameter for back-wards compatibility. Moreover, the return
> values are all deprecated. They were never actually used in the
> DevTools frontend and the same information is available from the
> Debugger#paused event that fires once execution stops at the
> beginning of the restarted function.
>
> The CL also re-baselines all the restart-frame inspector tests that
> now run successfully.
>
> R=​bmeurer@chromium.org, kimanh@chromium.org
>
> Bug: chromium:1303521
> Change-Id: I34bddeb1f2f4ff3dee58dd82e779c111495566f3
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3616505
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
> Commit-Queue: Simon Zünd <szuend@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80491}

Bug: chromium:1303521
Change-Id: Ibc33328c31a4b6ea736d07ce5e5ee109039eec8b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3645767
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80495}

The IsValidSectionCode function shouldn't include internally-used
numeric identifiers of well-known optional sections.

Fixed: v8:12867
Change-Id: I9d894ee57157455e92a17ddcde94f32f05fb038d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644612
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80494}

This reverts commit c3ac338b.

Reason for revert: Breaks stepping with `n`

Original change's description:
> [tools] Add a simple gdb frame unwinder
>
> Add a simple unwinder for gdb which, on x64,  walks frame pointers
> whenever there is no source information available. Ideally we would only
> do this for V8 PCs but this appears hard to do in an Unwinder without
> messing with gdb's internal assumptions.
>
> Change-Id: Iba1e62a3768340ee912e81d691237c1920a8ae91
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3608628
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80204}

Change-Id: I0264cf34cfe8fe2331bacf202dedbb4706535936
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644855
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80493}

This CL separates logic for promoting all of new space during fast
promotion out of the heap and into a new dedicated
PromoteYoungGenerationGC class.

It currently assumes SemiSpaceNewSpace and will need to be extended with
support for PagedNewSpace.

Bug: v8:12612
Change-Id: I0e65c034b444634a31b3c00df0a4b558612f023f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644610Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80492}

Doc: https://bit.ly/revive-restart-frame

This CL "undeprecates" Debugger#restartFrame and adds a new optional
"mode" parameter for back-wards compatibility. Moreover, the return
values are all deprecated. They were never actually used in the
DevTools frontend and the same information is available from the
Debugger#paused event that fires once execution stops at the
beginning of the restarted function.

The CL also re-baselines all the restart-frame inspector tests that
now run successfully.

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

Bug: chromium:1303521
Change-Id: I34bddeb1f2f4ff3dee58dd82e779c111495566f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3616505Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80491}

Hexadecimal/octal/binary BigInt property names should be converted
to decimal, i.e. the following object literals should all be equivalent:
var o = {0xF: 1}, p = {0xFn: 1}, q = {15: 1}, r = {15n: 1}.

Test case by yangwenming@bytedance.com, uploaded at
https://chromium-review.googlesource.com/c/v8/v8/+/3634937

Fixed: v8:10600
Change-Id: Ie1d8a16e95697cd31cbc0784843779c921ce91fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3642302Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80490}

Change-Id: I62f4d7fae09ab529756d106e77bb9bd8b3b239a3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644850
Commit-Queue: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80489}

Change-Id: If91de8dd11bdd2207bf88cad376c626964bfd162
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644848Reviewed-by: Lutz Vahl <vahl@chromium.org>
Commit-Queue: Lutz Vahl <vahl@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80488}

Bug: chromium:1310062
Change-Id: Iba231f98ef88df07b24b1c2bc9026a5b8ca18e15
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3644228Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80487}

R=thibaudm@chromium.org

Bug: v8:12864
Change-Id: Ic8f031eafaeab6e17fa070a8447cd093ebb9adf5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3643656Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80486}

This is a reland of commit 25e32252

Original change's description:
> Reland "[heap] Refactor atomic marking phase"
>
> This is a reland of commit a3f66927
>
> The reland addresses a few CHECKs that were too agressive and also
> properly adjusts Oilpan's marking configurations depending on V8's
> flags.
>
> Original change's description:
> > [heap] Refactor atomic marking phase
> >
> > The atomic marking phase was organized in many distinct smaller
> > phases. In particular, before http://crrev.com/c/3584115 the marking
> > phase split into two large separate phases.
> >
> > This CL reorganizes marking into two phases that perform regular V8
> > heap marking, Oilpan, and ephemerons:
> > - A parallel phase that likely drains all marking worklists;
> > - A single-threaded final phase to catch any left overs;
> >
> > This avoids artificial splitting in phases and also avoids repeated
> > starting and joining of jobs.
> >
> > Change-Id: I5cccfc5777837d9ece10d8f4925781bf2d07d9da
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3602507
> > Reviewed-by: Omer Katz <omerkatz@chromium.org>
> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> > Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#80265}
>
> Change-Id: I26648da361b92d787c173aa9d390100ce8958728
> Bug: chromium:1320896
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3616519
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80301}

Bug: chromium:1320896
Change-Id: I7ebb3bde9f0d3497f46c728bfbc380c1bd4bc021
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641167Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80485}

This CL introduces SideEffectDetectorScope which requires explicit
allowlisting of cases when side effects are allowed after calling
interceptor callbacks.
Side effects are not allowed when the callback does not intercept
the request.
The side effects detector is not enabled yet, it will be enabled in
a follow-up CL.

Bug: chromium:1310062
Change-Id: I805764920ed016cb37390aef7bb02cbdf5f72846
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641172Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80484}

Port commit fe443a4e

Bug: v8:12284
Change-Id: I242c4161ecff09fd7bcfeda27560a6c881c87d09
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641034
Auto-Submit: Yu Liu <liuyu@loongson.cn>
Commit-Queue: Yu Liu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#80483}

NewSpace is renamed to SemiSpaceNewSpace and NewSpaceBase is renamed to
NewSpace (the new PagedSpace new space implementation will be named
PagedNewSpace).

Most usecases are updated to use the base class rather than the concrete
semi space based implementation. To that end, the base class is extended
with additional virtual methods (for delegating to the concrete class).

This CL follows these guidelines:
(*) If at a method callsite we should know the exact new space
implementation we use, we cast to the concrete class. This is the case
for example for callsites in scavenger.*.
(*) If a method is called from outside the heap implementation or should
be present regardless of the concrete implementation, that method is
made virtual.
(*) Other cases are usually methods that are specific to a concrete
implementation but the concrete implementation is not known at the
callsite and there's no clear way to nicely abstract the method. In such
cases we cast to the concrete SemiSpaceNewSpace implementation for now
and we will revisit these cases once PagedNewSpace exists.

Bug: v8:12612
Change-Id: I7b85626774ce0d785b0257bf8d32b9f50eeaf292
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3625975
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80482}

Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/bc4639c..aecbdbf

fix some typos (#1393) (cui fliter)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/aecbdbf

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

Change-Id: Ib44a175614b0e3f2394c901b96e8d0b7fbaaa33c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641659
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Change-Id: I0efdbb9cdfef6c206201adf4d75a0c542979d2f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3640267Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80480}

Port fe443a4e

Original Commit Message:

    Prototype the instruction on the interpreter, and Arm64. Details of
    instruction lowerings on all relevant architectures can be found at:
    https://github.com/WebAssembly/relaxed-simd/issues/40

R=gdeepti@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I5da65cb5f59db811d9d796918b8f5c8892e053fe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3642299Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80479}

Bug: chromium:1322555
Change-Id: I2416150c19cd1b9dc062edd42806c1b10eead969
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3625836
Commit-Queue: Robert Paveza <Rob.Paveza@microsoft.com>
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Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80478}

BS for "backing store", obviously.

R=ahaas@chromium.org

Bug: v8:12425
Change-Id: I310ba8e34e8ca2c7b7bdeec5f1bc184330fbaf28
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641175Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80477}

Change-Id: Iafca9e5ddf85bc528d4043863ec71ae1ce7020d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3641168Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80476}