This is a reland #3. The fixes were landed separately.

Perf Sheriffs: this CL might regress some benchmarks while improving
the others.

Bug: v8:11880
Change-Id: I8ed5bf59360649718960dc34c06015ee6ff1532a
Cq-Include-Trybots: luci.v8.try:v8_android_arm64_compile_dbg
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422643Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78854}

Change-Id: I88ea54d02bb6600acc1105dce112285c68861007
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3423667Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78853}

No-Try: true
Bug: chromium:1292016
Change-Id: I9c3e5271bad6e05342840fafc0e405d5d4e65efc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424482Reviewed-by: Almothana Athamneh <almuthanna@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78852}

Change-Id: Ie62c4d46b767f1dcf70e8e75a30b5fc4d90ac295
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424897
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78851}

Runtime_HasProperty already does the right thing; this CL is directing
more cases to it.

Bug: v8:12580
Change-Id: I16ae6099fa9781ecc663085e87a7fc59abd10d02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422639Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78850}

This reverts commit e4311846.

Reason for revert: Breaking gc-stress bots  https://cr-buildbucket.appspot.com/build/8823780450691075553 

Original change's description:
> Reland "[counters] Improve v8.execute histogram timer"
>
> This is a reland of 69564827
>
> Original change's description:
> > [counters] Improve v8.execute histogram timer
> >
> > - Mark uncommon timer-paths as V8_NOINLINE
> > - Add explicit LongTaskNestedTimedHistogramScope class
> > - Use explicit LongTaskRecordMode enum
> > - Mark a few more isolate methods as const
> > - Add more timer scopes:
> >   - Accessors::ArrayLengthSetter
> >   - v8::NewContext
> >
> > Bug: v8:12498, chromium:1275056
> > Change-Id: I7896ee341c3c3a1fd5acf8f3f59347ff01dda9c0
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3338258
> > Reviewed-by: Marja Hölttä <marja@chromium.org>
> > Auto-Submit: Camillo Bruni <cbruni@chromium.org>
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#78372}
>
> Bug: v8:12498, chromium:1275056
> Change-Id: Ic153f1235d83340722fbd1053d2eba41133364d2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3338700
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78843}

Bug: v8:12498, chromium:1275056
Change-Id: Id5702025320b146e1b5b032650ffe3799c38300e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424491
Auto-Submit: Camillo Bruni <cbruni@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78849}

We can now specify the trials for clusterfuzz using the file
clusterfuzz_trials_config.json. There is also a presubmit check
to make sure that it is formatted correctly.

Change-Id: Iafb7063b63b1daeb7653830542d13b419cf187d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3416191Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78848}

This reverts commit 517ed4ad.

Reason for revert: There still seems to be an issue on V8 Win msvc related to this CL (https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win64%20-%20msvc/20568/overview).

Original change's description:
> Reland "[Torque] Generalize Torque literals to larger size"
>
> Previously, literals in Torque were stored as double values, which
> made it impossible to precisely represent 64 bit integer values.
> This CL replaces the old literal expression with an integer and
> floating point literal expression that are unbounded in size. We
> allow implicit conversion of these literals to arbitary integer
> and floating point types respectively and insert a corresponding
> bounds check into generated CSA.
>
> Changes in the reland: Simplified IntegerLiteral to single digit.
>
> Bug: v8:7793, chromium:1289282
> Change-Id: I31c762c2f31165c7a1d0b07842b764e5851ce189
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3406750
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78811}

Bug: v8:7793, chromium:1289282
Change-Id: I818cec9625fbd827a4a30088d8c8b759fb6c50d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424484
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78847}

Change-Id: Ie596dbb2041456e334d5cd7956a0717ccc7005c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420832Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78846}

This reverts commit a865d16b.

Reason for revert: breaks tsan and gc-stress

Original change's description:
> [wasm] Resume suspender on resolved promise
>
> Implement the WasmResume builtin, which resumes a wasm suspender
> when the corresponding JS promise resolves.
>
> Drive-by 1: Fix detection of empty stacks in the stack frame iterator.
> Drive-by 2: Add a stack ID for better tracing.
>
> R=​ahaas@chromium.org
> CC=​​fgm@chromium.org
>
> Bug: v8:12191
> Change-Id: Ifa3f00c4259f802292b04d426c739e9b551f87b9
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420827
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78842}

Bug: v8:12191
Change-Id: I3352c8b1dcc8d99e1bd782a09276add219a3ecda
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424489
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78845}

Enable compaction of objects in the map space during a full GC. So far
pages in the map space were never chosen as evacuation candidates. We
might be able to improve memory usage a bit by also compacting map
space. Luckily for us the marking barrier was already emitted when
updating an object's map word.

This CL adds a new flag FLAG_compact_map_space to easily turn off this
feature again. For now we keep this flag (and with that map space
compaction) disabled by default. So GC behavior does not change with
this CL.

Bug: v8:12578
Change-Id: I99c0cd826bd824af5383fb3ce64796693a59d1ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3404775Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78844}

This is a reland of 69564827

Original change's description:
> [counters] Improve v8.execute histogram timer
>
> - Mark uncommon timer-paths as V8_NOINLINE
> - Add explicit LongTaskNestedTimedHistogramScope class
> - Use explicit LongTaskRecordMode enum
> - Mark a few more isolate methods as const
> - Add more timer scopes:
>   - Accessors::ArrayLengthSetter
>   - v8::NewContext
>
> Bug: v8:12498, chromium:1275056
> Change-Id: I7896ee341c3c3a1fd5acf8f3f59347ff01dda9c0
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3338258
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Auto-Submit: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78372}

Bug: v8:12498, chromium:1275056
Change-Id: Ic153f1235d83340722fbd1053d2eba41133364d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3338700Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78843}

Implement the WasmResume builtin, which resumes a wasm suspender
when the corresponding JS promise resolves.

Drive-by 1: Fix detection of empty stacks in the stack frame iterator.
Drive-by 2: Add a stack ID for better tracing.

R=ahaas@chromium.org
CC=​fgm@chromium.org

Bug: v8:12191
Change-Id: Ifa3f00c4259f802292b04d426c739e9b551f87b9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420827Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78842}

The contents of CodeDataContainer::code_cage_base field was
accidentally written during serialization while zeros should
have been written instead.

Bug: v8:11880
Change-Id: Ib1d66d2fe8cceace19f4feb57950838bfbc89efa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422642
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78841}

This reverts commit 4b8f1b1c.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20stress-incremental-marking/6292/overview

Original change's description:
> Reland "[heap] Support client-to-shared refs in Code objects"
>
> This is a reland of 12e46091
>
> Original change's description:
> > [heap] Support client-to-shared refs in Code objects
> >
> > Support references from code objects in the client heaps to shared heap objects. Such references are stored in a remembered set during marking, which is later used for updating pointers.
> >
> > Bug: v8:11708
> > Change-Id: I8aeb508ddd14514ca65fa5acf3030dd8c2040168
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3401588
> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> > Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#78819}
>
> Bug: v8:11708
> Change-Id: I47bcf44b452fcffe8675fba03244b736ede14247
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422630
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78838}

Bug: v8:11708
Change-Id: I0ec57ad4d7dccf2271ff8c1048762cf2c1b97a42
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424477
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78840}

Port 99a5bb74

Original Commit Message:

    CallFunction is only called for targets that are checked not to be class
    constructors, therefore we can remove the check for class constructors
    from CallFunction.

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

Change-Id: I327c075bdd2e561236820818c2a26e8fc4ed6522
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421506Reviewed-by: Patrick Thier <pthier@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78839}

This is a reland of 12e46091

Original change's description:
> [heap] Support client-to-shared refs in Code objects
>
> Support references from code objects in the client heaps to shared heap objects. Such references are stored in a remembered set during marking, which is later used for updating pointers.
>
> Bug: v8:11708
> Change-Id: I8aeb508ddd14514ca65fa5acf3030dd8c2040168
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3401588
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78819}

Bug: v8:11708
Change-Id: I47bcf44b452fcffe8675fba03244b736ede14247
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422630Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78838}

This reverts commit e7ffb257.

Reason for revert: speculative revert because it might be causing 
these failures: https://ci.chromium.org/p/chromium/builders/ci/Deterministic%20Linux/32597

Original change's description:
> [ext-code-space] Enable external code space on x64 and desktop arm64
>
> This is a reland #2. The fixes were landed separately.
>
> Perf Sheriffs: this CL might regress some benchmarks while improving
> the others.
>
> Bug: v8:11880
> Change-Id: I397aef5ad5cce42ef189ee10b482805c90ec925a
> Cq-Include-Trybots: luci.v8.try:v8_android_arm64_compile_dbg
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3417000
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78817}

Bug: v8:11880
Change-Id: I74ec916267626433a060aa1b7804a4bfffeff269
Cq-Include-Trybots: luci.v8.try:v8_android_arm64_compile_dbg
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422640
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78837}

Currently the reconstruction of the shared heap object cache for testing
incorrectly includes the terminating undefined value. Unlike the RO cache
reconstruction, which does not change, the shared heap object cache may be
extended by serializing the live Isolate during testing, so it should skip the
original terminating undefined.

Bug: v8:12007, v8:12584
Change-Id: If73b865567ed7d5b658506e15b1dc8d14bd755d6
Cq-Include-Trybots: luci.v8.try:v8_linux64_gc_stress_custom_snapshot_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421726
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78836}

- Use more HeapObject instead of Object
- Use raw instance_type

Bug: v8:11525
Change-Id: I5f1b8ea95fa14acc9c94555a95e8586f3c7e8888
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422637Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78835}

Bug: v8:11263
Change-Id: I4d7d614666ff846740e1bfc1146bd82f08f6a739
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420830Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78834}

The Descriptor of Builtin defines the allocated machine registers for
its parameters. However, when an argument is in
InterpreterAccumulatorRegister, the Descriptor might require another
machine register holding the the value of this argument and result in a
redundant register-to-register move. This CL avoids this move by
allocating a same register for such argument. It also changes the
assigned registers for Typeof, KeyedLoadIC and KeyedHasIC to align the
use in Baseline Builtins.

Change-Id: I14004d8e44c4c45f2a1bea2c09b06160f615709b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3416544Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78833}

Change-Id: I7cde42eb5c3a2df81950cc622dd9b3fa3f74caa3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422634
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78832}

This extracts all {dlsym} calls to a single function which is called
once during initialization.

R=jkummerow@chromium.org

Bug: v8:11974
Change-Id: I068f180e26b92d72e3e1e0ba7c6232c760f202e8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3417439Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78831}

We can avoid a pointer deref if the ValueSerializer is inlined in
WebSnapshotDeserializer.

Bug: v8:11525
Change-Id: I92d8cac37af3fdbe04a66465f97761bf5a9fd705
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3417433Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78830}

Context:
https://chromium-review.googlesource.com/c/v8/v8/+/3421507

No-Try: true
Bug: v8:12007
Change-Id: I570cd80dbf84270298f48d9732010514bbb2d204
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422631
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78829}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/45926ba..3a3da2d

Rolling v8/buildtools/third_party/libunwind/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind/+log/c8a5d43..7246413

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/d586255..289dedd

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/f45d586..0b7798b

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/b93ee79..00a9400

Rolling v8/tools/luci-go: git_revision:7528d700b89db0b6feb32be098d40597f738d3c7..git_revision:9c88febc5ab63469baf5aae05a74f8e419970ef3

Rolling v8/tools/luci-go: git_revision:7528d700b89db0b6feb32be098d40597f738d3c7..git_revision:9c88febc5ab63469baf5aae05a74f8e419970ef3

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

Change-Id: Iac896e6c72fc33bba8e8b96190d62028c4aedcf5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422885
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Port 54604990

Change-Id: I011a9bf1329e7499cb8d288186a098e6768e1436
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3419126
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@{#78827}

With dynamic tiering, the total amount of code generated for a
WebAssembly module decreases significantly. However, the amount of
code space we reserved for generated code has not been adjusted yet.
This CL adds a parameter for dynamic tiering to
EstimateNativeModuleCodeSize. If dynamic tiering is used, then the code
space reserved for TurboFan gets reduced to a quarter of the code space
without dynamic tiering.

Reserving a quarter of the space seems to be still quite generous. Even
Google Earth, seems to use a lot of its code, only needs less than 20%.

R=clemensb@chromium.org

Bug: chromium:1285334
Change-Id: I7dce0821b5e46d7240dfb1523031de84b1fe1348
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420307Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78826}

Change-Id: I9c3319bb956f4fca41bd3ef8e03a7bd7424f1a70
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421845Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78825}

Drive-by fix to align what builds the test runner considers to be able
to have shared memory features and what builds can create a shared
Isolate.

Bug: v8:12007
Change-Id: I151513ccbfbee31e5b35c5ce8e9192732eabfee2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421507Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78824}

Change-Id: I81e0823b4604389c42726631d7314cbf087db77a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421513Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78823}

This fixes the `unused variable` error in release builds
with gcc.

Change-Id: I637dac3968e768960035960b846b2783f92571d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421511Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78822}

This reverts commit 12e46091.

Reason for revert: new test fails on GC stress bot:
https://cr-buildbucket.appspot.com/build/8823858142855002833

Original change's description:
> [heap] Support client-to-shared refs in Code objects
>
> Support references from code objects in the client heaps to shared heap objects. Such references are stored in a remembered set during marking, which is later used for updating pointers.
>
> Bug: v8:11708
> Change-Id: I8aeb508ddd14514ca65fa5acf3030dd8c2040168
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3401588
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78819}

Bug: v8:11708
Change-Id: If8d15a22651f8b1cfca61be21a81f60b43f008a4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3421725
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78821}

Add <utility> to cover for std::exchange.

Bug: v8:12585
Change-Id: Ida65144e93e466be8914527d0e646f348c136bcb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420309
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78820}

Support references from code objects in the client heaps to shared heap objects. Such references are stored in a remembered set during marking, which is later used for updating pointers.

Bug: v8:11708
Change-Id: I8aeb508ddd14514ca65fa5acf3030dd8c2040168
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3401588Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78819}

- It changes ContextSlotIndex from static to non-static.
- Updates ContextSlotIndex and ScriptContextTable::Lookup to use
  handles, since it is necessary for the NameToIndexHashTable::Add
- Adds a NameToIndexHashTableLookup to CSA.
- Renames LocalNamesIterator to LocalNamesRange and iterates the
  hashtable when local names are not inlined.

Bug: v8:12315
Change-Id: I2c8c933002fe73f4def145bc207825823262d743
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3406751Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78818}

This is a reland #2. The fixes were landed separately.

Perf Sheriffs: this CL might regress some benchmarks while improving
the others.

Bug: v8:11880
Change-Id: I397aef5ad5cce42ef189ee10b482805c90ec925a
Cq-Include-Trybots: luci.v8.try:v8_android_arm64_compile_dbg
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3417000Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78817}

This CL replaces the equirecursive type system for wasm-gc with the
isorecursive hybrid type system presented here:
https://github.com/WebAssembly/gc/issues/257.

In broad strokes, this includes the following changes:
- In the module decoder, remove equirecursive types. Implement recursive
  type groups, subtype definitions, and function/struct/array
  definitions. Treat nominal modules as syntactic sugar of an
  isorecursive module, where all types belong in the same recursive
  group.
- Remove rtt.sub and all related infrastructure.
- Change subtyping to work with explicit supertypes only.
- Add ValidSubtypeDefinition in subtyping, to check that subtype
  declarations are valid during decoding.
- Remove the subtyping cache.
- Add support for functions to have specific signature index in
  WasmModuleBuilder and in test-gc.cc.
- Adapt tests.

Current restrictions:
- Recursive groups are not stored beyond decoding.
- Type canonicalization is not implemented. No tests relying on types
  being considered identical post-canonicalization.
- No cross-module subtyping is possible. Tests relying on cross-module
  subtyping have been commented out.

Bug: v8:7748
Change-Id: I69fd04ecc5611f6230c95d5c89d1c520163fffae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3416239Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78816}

... which was using incorrect cage base value for reading map field.

Drive-by: fix CodeDataContainer verifier - the value returned by
code().InstructionStart() might not always be equal to cached code
entry point value when shared pointer compression cage is enabled.

Bug: v8:11880, chromium:1291299
Change-Id: I1338717095a9a1ad2c056f0af0181eabaef88431
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420308Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78815}