Change-Id: Ia92047d3e23b4180172c9d53c0b0bca12a856a04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734812Reviewed-by: Hannes Payer <hpayer@chromium.org>
Auto-Submit: Lutz Vahl <vahl@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81484}

In this part: push, pop

Bug: v8:11111
Change-Id: I62ddc418acaec778270d69c9839e2236d3c8f1e4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738259
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81483}

Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/b7afda2..7280499

Remove redundant formatting tags (#1420) (Tom Cobley)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/7280499

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

Change-Id: Ib19d28c3b9b95da06296802f44af8600fb25933b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738494Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81482}

This was already removed as part of the lazy api accessor work, but
was never cleaned up throughout v8.

Change-Id: I00621d0e0f33c58efaed0f6b55cd22f1f8803825
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735131Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81481}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/26f8da3..13924a1

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

Change-Id: I9693339bd2065370daec9bd36ff960ee47ad36a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738491
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/322e254..bd235b0

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/a83ac93..9dec1b4

Rolling v8/third_party/fuchsia-sdk/sdk: version:8.20220629.1.1..version:8.20220630.1.1

Rolling v8/tools/luci-go: git_revision:5d9b6ecf87cdfb928e1112d2838d26bc7ede2b48..git_revision:be5d9aacf8987c0826223264f0427cd0b530b6a4

Rolling v8/tools/luci-go: git_revision:5d9b6ecf87cdfb928e1112d2838d26bc7ede2b48..git_revision:be5d9aacf8987c0826223264f0427cd0b530b6a4

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

Change-Id: Iaeef3765f756fcea36fb10ba87a15a5a19da1025
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738490
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Bug: chromium:1339276
Change-Id: Ice60167660fa52e84c78bb0bd9d2a2c85e0c377a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3733027Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Ilya Rezvov <irezvov@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81478}

Bug: v8:12764
Change-Id: I5f915d1c4dad22f1ce12423f6149a85ad32d6725
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3733043
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81477}

Bug: chromium:1338980
Change-Id: Iae76931fb375ab792659c937d673dfe65e364360
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3739339
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81476}

The previous combination of a conditional and an unconditional move
produced an incorrect value when dst == rhs and lhs contained the
expected result.

Fixed: chromium:1338980
Change-Id: If3f722999ed9c0ffd687736280d048d232d75736
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738219
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81475}

This is a performance improvement; no change in functional
behavior is intended.
AdaptiveMap is an abstraction over a std::map or a std::vector:
after being initialized iteratively with a set of entries, it
can switch to dense vector-based storage if that would be more
efficient.
The motivation is that we expect most name sections, if they
are present at all, to give fairly complete information, so the
dense mode will likely be the typical case. However, it's easy
enough to support sparse mode as well, and parsing the name
section into a std::map at first is particularly convenient for
cases where we can't guess the expected number of entries, such
as for function locals.

Change-Id: Ia17f27576a3061eb05c912f7081411d6f38137e6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726150Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81474}

If the WordAnd aims to take low 8/16/32 bits of an oprand for later cmp8/cmp16/cmp32, it can be removed.

Change-Id: I0040e596ab65a6a9255ddbdb4fca573fd765879e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3731488
Commit-Queue: Jianxiao Lu <jianxiao.lu@intel.com>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81473}

This is a partial reland of https://crrev.com/c/3597106

With this change, an existing Script from the compilation cache can be
reused after its top-level SharedFunctionInfo was discarded, but only if
the new script is parsed on the main thread (not deserialized from code
cache data, and not parsed on a background thread).

Bug: v8:12808
Change-Id: I1edaee2095306a89e2c3b91f2fd01ac053f3c770
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3689348Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#81472}

Bug: v8:12612
Change-Id: Ifa85407c506bb3192dfe7446a01cd71a9e803462
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736448
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81471}

This reverts commit a618a4a3.

Reason for revert: Original CL got reverted, we don't need the suppression anymore.

Original change's description:
> [foozzie] Silence a frequently occuring correctness bug
>
> This CL adds back a patch of Math.pow for correctness fuzzing, which
> drops some precision and hides a difference on the fast path.
>
> The same suppression was previously used on https://crbug.com/693426.
>
> No-Try: true
> Bug: chromium:1339320
> Change-Id: Id52f25f8a2b6b5aeca956587b16a10c61aa68e36
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726295
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Auto-Submit: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81408}

Bug: chromium:1339320
Change-Id: Id4cf04f9480b3052978ee7ca3dd83d7ee16845c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736446
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#81470}

This reverts commit 49d15209.

Reason for revert: Trigger Skia branch roller

Original change's description:
> White space to trigger Skia branch rollers
>
> Bug: skia:10306
> Change-Id: Ibcddc8c724130e315471413c2835687fe0571475
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3718660
> Auto-Submit: Liviu Rau <liviurau@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81317}

Bug: skia:10306
Change-Id: I5b6f232dca57c305369fd58e912e46d980769634
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735133
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#81469}

MinorMC maintained a separate marking state to support interleaved GCs.
Since MinorMC now assumes that interleaving is not possible, MinorMC can
use the same marking state as the full GC.

Bug: v8:12612
Change-Id: Ibeb7df2eb24e448f811b497c9d16b3b132f87ec2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735163Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81468}

The set of registers used for Pop/PushCallerSaved is a superset of the
ABI caller-saved registers. In the past it may have been the case that
these extra registers had to be saved, but at this point
Pop/PushCallerSaved is only used for fast C calls from JS, so we can
rely on the C-compiled functions saving callee-saved registers
correctly, and only save ABI-required registers ourselves.

Change-Id: I2a172bdbb381a1485654e54e3561d695b6672ed0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735130
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81467}

This file uses inline assembly, but inline assembly does not work
for cross-compilation. As this file only contains debug code, no-oping
this file for cross-compilation seems acceptable.

R=ishell@chromium.org

Bug: v8:12926
Change-Id: I01276cf019e8c31e4db6f7f61a3d91526f660578
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735165
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81466}

This is a necessary assumption for concurrent marking in MinorMC and
will simplify the code as it allows MinorMC to reuse the same marking
bitmap as full GCs.

Bug: v8:12612
Change-Id: I5e9be45c7d84320721ce7f7578dee1eb972d6f6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732933Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81465}

Change-Id: I6e84533581917afe90796265c563868fa1ab4448
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734810
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81464}

This reverts commit 83470dee.

Reason for revert: Introduced inconsistencies with the runtime (https://crbug.com/chromium/1339320) and increased inaccuracy
(https://crbug.com/v8/12996). Even though this is currently not specified, the speed improvement doesn't seem to be worth the
lower precision.

Bug: chromium:1339320, v8:12996

Original change's description:
> [turbofan] Add fast path for Math.pow with small positive integer exponent
>
> For small positive integer exponents, calculate the result with an inlined loop.
>
> This change may improve the average runtime of JetStream2/raytrace for ~8%.
>
> Change-Id: I0e3939dc9c21b0c392c04d61fd197bf618004ab4
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3708024
> Commit-Queue: Fanchen Kong <fanchen.kong@intel.com>
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81341}

Change-Id: Idfaa229b3d37a1831f016453c6091d2498cb6bcd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735129
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
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On old iPhones, jscvt is not availale. This CL diables jscvt on iOS in
general.

R=tebbi@chromium.org

Bug: v8:13004
Change-Id: Ib2651d7fa43892c06dc8c36e497a8c76344b5051
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726297Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81462}

We need this to expand the max input count to be big enough for our
biggest calls (and to add more bits to the op properties).

Bug: v8:7700
Change-Id: I6d63cf39b3079c3c85a32f208ce925ae795ef5a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734811
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81461}

Stack scan during marking for shared heap broke in
  https://crrev.com/c/3703837

This CL re-adds the client Isolate handling which is necessary as
those client Isolates may refer to the shared Isolate from stack.

Bug: v8:13019
Change-Id: I1ee27fb8bab173087a98a0b79f4126612427b016
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736444Reviewed-by: Nikolaos Papaspyrou <nikolaos@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81460}

Waiting for a background thread to finish a task isn't going to
work when there are no background threads. Luckily, we can sidestep
the problem by compiling with Turbofan immediately, instead of
triggering dynamic tier-up through repeated execution. As a nice bonus,
this makes the test faster in non-predictable modes too.

Fixed: v8:13020
Change-Id: I2d47bc07bbde48a210c6ea59551ae16e63bdae05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736443Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81459}

In DebugPropertyIterator::iterator() we were assuming that the call to
JSReceiver::GetOwnPropertyDescriptor() would always yield either an
exception or a valid property descriptor. But that's not guaranteed to
be the case (anymore), because JSReceiver::GetOwnPropertyDescriptor()
nowadays can chicken out with `false` for many different reasons.

Coincidentally the callsites to DebugPropertyIterator::iterator() are
already equipped to handle the case where of an empty property
descriptor, which is basically what we get out here. So this CL adjusts
the DebugPropertyIterator to return an empty descriptor in this case.

Fixed: chromium:1291240
Change-Id: I22a9d0cde2b2c6d3966a85478ed0b87fb4c5d232
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736445Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81458}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/5b369fe..26f8da3

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

Change-Id: Ia7497d20609919082eef79230051053d61c8460d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3737363
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Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/c76626e..322e254

Rolling v8/third_party/fuchsia-sdk/sdk: version:8.20220627.3.1..version:8.20220629.1.1

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/9406a60..af29db7

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

Change-Id: I769c1ece184dd94a752cf17bcf890a11fc70dab4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735118
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Fixed: chromium:1340488
Change-Id: Id3da10dd13256dfc15a6fef4dc412b5d30ccc8cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735126Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81455}

port commit b9c4a849

Change-Id: Id2764f7b37b287a76bd9b22e55f4153b9b619bd6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736554
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#81454}

https://github.com/tc39/proposal-temporal/pull/1917
https://github.com/tc39/proposal-temporal/pull/1953

Bug: v8:11544
Change-Id: I667980e312248ccbaf826d4e3104fb1ddabef890
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721464
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81453}

Shifting negative integrals is undefined behavior. The CL simply
switches to uint64_t when decompressing, which anyway results in
sign-extension (in standard terms, integral promotion must preserve the
value and the sign of the source operand).

The CL doesn't have any functional changes, the generated code is the
same. It only fixes the ubsan report.

Bug: chromium:1325007
Change-Id: I491a87b84d4e98b0225f76825dac2f9e85f168d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3736442
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81452}

Bug: v8:11111
Change-Id: I4846910d05bb5d83c964b2279efdb7cf2a4545b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3733028Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81451}

Change-Id: I172f684515e363fc29e299c70fa3d6eac2789818
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735127
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81450}

This reverts commit b9821eff.

Reason for revert: Tests fail on gc-stress: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/39147/overview

Original change's description:
> [stringrefs] Implement string.new_wtf16_array
>
> See https://github.com/WebAssembly/stringref/issues/1.
>
> Bug: v8:12868
> Change-Id: Iea3940c48d5f47609ff7d32e366d2f41d2161372
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734808
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Andy Wingo <wingo@igalia.com>
> Cr-Commit-Position: refs/heads/main@{#81448}

Bug: v8:12868
Change-Id: I7abf8817c51057d9b984175ce162364acbb41ac4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735894
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81449}

See https://github.com/WebAssembly/stringref/issues/1.

Bug: v8:12868
Change-Id: Iea3940c48d5f47609ff7d32e366d2f41d2161372
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3734808Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andy Wingo <wingo@igalia.com>
Cr-Commit-Position: refs/heads/main@{#81448}

GCC doesn't have __attribute__((require_constant_initialization)). Use
it only for clang.

Bug: chromium:1325007
Change-Id: Ide5d428ed107d3244072774c0031c042ed0cee31
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735125Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81447}

NamesProvider class:
This consolidates logic used so far for the debugger interface.
It also adds support for the "extended name section" proposal:
https://github.com/WebAssembly/extended-name-section

StringBuilder class:
Like std::ostringstream, but 4x faster for this use case.

This lays the groundwork for an updated Wasm disassembler.

Bug: v8:12917
Change-Id: I98aa258147834bc0e314ba98c5927b4cd6070b8f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3720714Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81446}

We might be racing with code that resets the age to 0, causing CAS to
fail (or us to read an already reset value).

Change-Id: I3ba555d64d48c4e2d2399978427c764c0e6e7128
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735167
Auto-Submit: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81445}