Cobalt is a V8 embedder and it has its own platform abstraction. So
to V8 the OS name is "Starboard" instead of Win/Linux/Android even
though the real OS is one of them. To select the right embedded file
writer for Cobalt, we need some customizations in
platform-embedded-file-writer-base.*.

Bug: v8:10927
Change-Id: I6dadb4690ade0b4aebec14bc87fdc6d71c03b3bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2963804
Auto-Submit: John Xu <johnx@google.com>
Commit-Queue: John Xu <johnx@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75170}

- Show related code object for Maps
- Fix opening transition trees
- Rename *LogEntry.prototype.codeLogEntry to .code
- Show Arrays as dropdowns in tooltips
- Avoid hiding the tooltip when clicking on the tooltip itself
- Show links to code variants (bytecode/baseline/optimized)
- Fix chunk offset calculation
- Fix code for browsers that don't support
  navigator.scheduling.isInputPending

Bug: v8:10644
Change-Id: I858dc410657d26d076214368814a52177b124f4c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964592
Auto-Submit: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75169}

- 2944844: [sparkplug][arm][arm64[ia32] Callee-saved registers for RecordWrite
- Delete kTestReg due to 2945538
- 2949104: [runtime] Rename Builtins::Name to Builtin

Change-Id: I33d12df7cbee6842a05c1dbe3e6158be1ff4cbc7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2952865
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn>
Cr-Commit-Position: refs/heads/master@{#75168}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e6942ef..bc21621

Rolling v8/buildtools/linux64: git_revision:e0c476ffc83dc10897cb90b45c03ae2539352c5c..git_revision:72d5a6e15d868abc8451fe0a3b6596e86a2ffc40

Rolling v8/buildtools/third_party/libc++abi/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi/+log/6c29693..f4328ad

Rolling v8/third_party/aemu-linux-x64: XSqCv80jM_M_v5sYf8LVksQaL1zsbc6Pp9y-6WBCkbsC..D99f9rA6SsUg1U4VGdh-MSQQX94eeW2Mi8I_xw6-ccwC

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/e30a74f..6434229

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/3b56309..e319aba

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/de043ec..c6949cb

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

Change-Id: Ia70979bb89a4f20a75995819f4a9dc5c02a4ae1a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2965998Reviewed-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@{#75167}

... to ensure that it'll not be triggered for Code objects which
are known to never be in new space.

This removes the need for having custom implementation of setters with
Code values - existing [CONDITIONAL_]WRITE_BARRIER macros will work
just fine.

Bug: v8:11879, v8:11880
Change-Id: I7ed70e51f9459040086dd4c67e61b11617dbdc24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964812Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75166}

This reverts commit 8e44ee5f.

Reason for revert: Reverting due to UBSan failures - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/16888.

Original change's description:
> [cpu-profiler] Reference counting for code entries
>
> To enable deallocation of CodeEntry objects after they're no longer
> being referenced by an active profile or alive on the heap, replace the
> |used| bit with a proper reference count maintained by a CodeMap.
>
> Bug: v8:11054
> Change-Id: Id3d5941e509504415692f833e406ecdd2553d426
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2945541
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Andrew Comminos <acomminos@fb.com>
> Cr-Commit-Position: refs/heads/master@{#75164}

Bug: v8:11054
Change-Id: Iae3ae73014c7eafe20917cf088a569f370d9b53d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2965489
Auto-Submit: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#75165}

To enable deallocation of CodeEntry objects after they're no longer
being referenced by an active profile or alive on the heap, replace the
|used| bit with a proper reference count maintained by a CodeMap.

Bug: v8:11054
Change-Id: Id3d5941e509504415692f833e406ecdd2553d426
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2945541Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Cr-Commit-Position: refs/heads/master@{#75164}

Moves TurboProp to optimize around the time of TurboFan right now, and
removes some of the special-case logic we had to avoid aggressive
early optimization of TurboProp.

BUG=v8:9684

Change-Id: I0299408891ff6fd57e6523ff309b5f16624466a9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964814
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75163}

1. Add test to ensure none of the array contains undefined
2. Calculate the fixed array size by considering the code may filter out
some itmes returned by ICU.
3. Add test to check there are no undefined.
4. Add test to check the locale.timeZones return sorted array.
5. Also refactor the JSArray generation code.

Bug: v8:11871
Change-Id: I8ad4a779d137d9b7e2deead7a1aa38e599e1af2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953517
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75162}

The shorter xorl + movb instructions cause regressions.

Bug: chromium:1220093
Change-Id: Ib7da0ea16669fa490b78a8095f6f3b35e972e1cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964396Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75161}

StateBase requires a virtual destructor as it is destroyed through the
base class. Failing to provide a virtual dtor leaks internal state in
State (and possible in future RootState).

Bug: chromium:1056170
Change-Id: I4408a57dc05fdeb81408f571dd6eb87312ba7c9d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964815Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75160}

Long live --log-ic!

Change-Id: I4d8cefd64cdbf693a868019deb2a864d43cbd2ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2964393
Auto-Submit: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75159}

No changes to the algorithm; minor speedup due to the move
from Handle<BigInt> to Digits.

Bug: v8:11515
Change-Id: Id85fe4f0c276d3ad826fee79205719092d0e0715
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2947412
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75158}

The boolean value is expected to be present during code
generation.

Change-Id: I3f9bd8f3977badd7fc7c0a716858d0d46032ae95
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2963834Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#75157}

Bug: v8:7748
Change-Id: Ifdc661d3f4f95d8bd0dbacdface6aed15b9f1942
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960210
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75156}

Command to build: `bazel build :d8`

Caveats:
  - Needs clang
  - Only supports x64 on Linux
  - Bare V8: no Wasm and no ICU
  - Still needs GN to generate inspector files

Bug: v8:11234
Change-Id: I6d01fecff5fba5c3582995d071692e5c6c6c6310
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960949
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75155}

This CL fixes tests failure caused by register allocation conflicts.

Change-Id: Ie5ba445d2e36047abf95644b613f49d3ed47315f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2963492Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#75154}

Inline scripts share the same URL, so lookup of script by URL on them
can give the wrong result. Also, their source positions are relative to
the start of the HTML file, so we need to infer the starting line from
the Script's compilation event.

As a drive-by, fix the tooltip to lock in-place on click.

Change-Id: I5db6d35b0fbd2521531e48c34dea44b43b65ca4a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2963592
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75153}

CodeComment nicely indents nested comments for better readable
disassembled code.

In addition, there are two helper macros:
- ASM_CODE_COMMENT adds the current function name as comment
- ASM_CODE_COMMENT_STRING macro can be used with custom strings

Bug: v8:11879
Change-Id: If5ff7e315f5acebe613f24b20d34694155f928d3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960888
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75152}

I don't see any reason why we need to convert the 'uninitialized'
Oddball into a Smi 0 in the Smi case, nor why we need to convert the
hole-NaN HeapNumber into the Oddball in the Tagged case. These are
temporary anyways.

Change-Id: Ifdcd67528c7b19c36a1bde11291d78c3f211897f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953291Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75151}

- Open and focus separate views for each log entry
- Map.prototype.parent is now a getter
- Fix SharedLibLogEntry tooltips
- Store codeEntry in IcLogEntry for linking back to code objects
- New property-link-table which is used in tooltip and code-panel
- Ignore right-click events in the timeline-tracks

Bug: v8:10644, v8:11835
Change-Id: Id2fe5002b776adf362b1580b96082c84790a6ef0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960804Reviewed-by: Patrick Thier <pthier@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75150}

Inactive live ranges are ordered by their next start, so in
UpdateDeferredFixedRanges, we can stop the search for conflicts as soon
as the next start is after the end of the current extent of deferred
code.

Bug: v8:11861
Change-Id: I114eb776c8228948ecca68d105224b121be8931b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960950Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75149}

This CL optimizes Heap::EnsureSweepingCompleted() by only ensure that
sweeping is finished for that object's page only and not for the whole
heap.

For this purpose the page is removed from the sweeping_list_ and
processed on the main thread. In case the object is in new space,
this method will just use EnsureIterabilityCompleted() since
the iterability task doesn't currently have any kind of synchronization.
Also the new space will generally be much smaller.

Bug: v8:11837
Change-Id: I7e878b5c84c223009fac0d58798197be5cd524e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2958488
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75148}

Before this CL the C strings were generated using new char[] and
destroyed using delete. Fix this by avoiding a raw new[] call and
directly using unique_ptr.

Bug: chromium:1056170
Change-Id: I894171d58a3f7a765cdf86e07d3da2e9298a4a92
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960275Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75147}

Add better support for lots of thin ticks by:

  * Removing stroke on ticks (so that the stroke isn't thicker than the
    tick itself)
  * Alternating colours of the ticks between light and dark (so that
    neighbouring ticks are still distinguishable)
  * Making selection drawing use isInputPending to allow faster looping
    over multiple ticks.

Change-Id: Iaa13fe4820d3d3168e085dfc01d7581cbc1739f0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2959626
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75146}

In the same vein we did tagged stores, we can do tagged loads.

As a drive-by, move GetTSANRelaxedStoreStub to CodeFactory.

Bug: v8:7790, v8:11600
Change-Id: Ic1ef3245623756538eab64c3358047e3797195c1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953162
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75145}

R=mvstanton@chromium.org

Change-Id: Ia9b5b6e3b80334555faddd1fbc70995d414295a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960889Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75144}

Bug: v8:11879
Change-Id: I3f2f65d38fc656155b27b8835516cbf2832bf269
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2649032Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75143}

Bug: v8:11879, v8:11880
Change-Id: I6b37148ae2a971bda0cbb6636f64561ab0a02ba5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960215
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75142}

Port 407317a2

Change-Id: I6d46b2c9b9bafb0287fa711822aac8ffdb30c7ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2962153
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#75141}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b59724c..e6942ef

Rolling v8/buildtools/third_party/libc++abi/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi/+log/e5f25a3..6c29693

Rolling v8/third_party/aemu-linux-x64: KF0Sz0CG_sURJodN44_YMwy0VU9tagOFFB_3EDTux1kC..XSqCv80jM_M_v5sYf8LVksQaL1zsbc6Pp9y-6WBCkbsC

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/2f46970..e30a74f

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/ef579a1..3b56309

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

Change-Id: I3b333c34f79e876889148c808c7e1aac3866cf11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2962152Reviewed-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@{#75140}

Bug: v8:11879
Change-Id: Ifb894d8beec6b54a9b7ff879dd4d6710306ba15b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960217
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75139}

This is a reland of 5d84b6cb. PS2 contains
the fix for a copy&paste error in a preprocessor condition.

Original change's description:
> [no-wasm] Exclude trap-handler implementation
>
> The trap handler is only needed for WebAssembly, hence it can be
> excluded in no-wasm builds (v8_enable_webassembly = false).
> This makes it easier to port WebAssembly to platforms that do not need
> to support WebAssembly.
>
> R=ahaas@chromium.org, jkummerow@chromium.org
> CC=johnx@google.com
>
> Bug: v8:11877
> Change-Id: I25c34c2c4f1122227047e13add532ee2b9f73d2f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953285
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75101}

Bug: v8:11877
Change-Id: I70dba5dc8762c65a9c751ff6619a3b0ebb542837
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960214Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75138}

This CL also removes code handler related logic from CodeFactory
and removes unused CodeFactory::BinaryOperation().

Bug: v8:11879, v8:11880
Change-Id: I4ea3074b7143975bea3f9367bcab84cdfcd86827
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960948
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75137}

Just as other skipped tests, this new test uses SAB to synchronize
between Workers, thus timing (and hence amount of allocations) is
nondeterministic.

R=syg@chromium.org

Bug: v8:11881
Change-Id: I9cd375a1f804aac4248a7c491e75a1c7c7919e82
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2959627Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75136}

Relevant links:
https://github.com/WebAssembly/exception-handling/issues/153
https://github.com/WebAssembly/exception-handling/pull/156

R=clemensb@chromium.org

Bug: v8:8091
Change-Id: I0deeb9665c6648e643d0aa4f310b7676e1c2fa32
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2959624
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75135}

Port 407317a2

Original Commit Message:

    - Convert Builtin to enum class
    - Change int-based builtin_index methods to use Builtin
    - Change Builtins::builtin to Builtins::code

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

Change-Id: Ic92eeea4a0d0aaf38d78a93bfbaac2bb10403dae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960908Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#75134}

TNode has a templated constructor from TNode<U>, but this doesn't take
precedence over the auto-generated copy constructor, which results in a
warning being fired.  Fix by adding an explicit copy constructor that
does what the templated constructor does, which in turn requires fixing
some missing #includes that slipped by due to the lack of
LazyTemplateChecks() in the autogenerated copy constructor.

Bug: chromium:1213098
Change-Id: Iad40950261af8f88396be9227355e4e013837341
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2953503Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75133}

This reverts commit fd93f338.

Reason for revert: Out of bounds errors in Unity benchmark (link is internal).

Original change's description:
> [wasm][liftoff] Cache the memory start register
>
> WebAssembly functions often have subsequent memory accesses, and each of
> these memory accesses need the start address of the memory in a register.
> With this CL the register with the memory start address is cached, so
> only the first memory access has to load the memory start address into a
> register, subsequent memory accesses can just reuse the register.
>
> In first measurements with the epic benchmark this reduces the size of
> the generated Liftoff code by a bit more than 5%.
>
> R=​clemensb@chromium.org
>
> Bug: v8:11862
> Change-Id: Ic33e7e3c00a4209570821269c728187affbeadcf
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2947403
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75113}

Bug: v8:11862
Change-Id: I20c7e7d729cf9846499db90c02f8581d7f994ace
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960216
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#75132}

Constructors define instance types for their instances while accessors
define a range of permissable instance types for receiver checks.\

Bug: v8:11476
Change-Id: I48b5326ec0a4e847283c2fa5c8f1705302727453
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2821430Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75131}