This CL is the first step towards creating a paged new sapce.
The CL creates a base class for new space that holds all fields not
specific to the semi space based implementation, and methods that do not
interact with the semi spaces. Methods are moved as is to the new base
class.

Future CLs will rename the classes, split/refactor additional methods,
and make other methods virtual.

Bug: v8:12612
Change-Id: Ibd8ec5135d66daf0fd025493bfaff537d61e049f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3584120Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80024}

This CL splits the stack frame into tagged and untagged slots, and allows reuse
of slots for values that are also tagged/untagged.

Bug: v8:7700
Change-Id: Id068807d1cd9bcd8c9e41d330f44acf346b16685
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585959Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80023}

This is a CL similar to
https://chromium-review.googlesource.com/c/v8/v8/+/3553006, but on Linux
rather than macOS. The goal is to allow builtins to use short builtin
calls without paying a memory cost, by remapping rather than copying
them.

However, while macOS has a system call making this easier, on Linux we
don't have one on most kernels. There is the recently-introduced
mremap(MREMAP_DONTUNMMAP), which is available in 5.7, but only works on
anonymous mappings until 5.13, which is too recent for most Android
devices.

Instead, we open() the file containing the builtins, and mmap() it at
the desired location.

Change-Id: I4524f349948b8f48c4536cf392a1cd179662a6cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3570426Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Benoit Lize <lizeb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80022}

Since https://crrev.com/c/3486556, several old metrics related to GC
have disappeared from chromeperf, showing very small (near zero) values,
e.g., v8-gc-scavenger, v8-gc-full-mark-compactor,
v8-gc-latency-mark-compactor. This CL fixes this issue.

Bug: chromium:1315527
Bug: chromium:1154636
Change-Id: I5ee7167a6d4a6a54b2272bb63588990db17dabbc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585565Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80021}

The SSE2_UNOP instructions have various src and dst register types for
256-bit AVX. One of them, the ucomisd instruction does not support YMM.
Other two: vcvtpd2ps and vcvttpd2dq use XMM as dst register. We extend
the Operand type to Operand256 to represent m256 to distiguish with the
128-bit AVX instruction.

Since this is a small suite, we explicitly specify the operand type for
each instruction.

Bug: v8:12228
Change-Id: I07c8168bd49f75eb8e4df8d6adfcfb37c1d34fff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3518423Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Yolanda Chen <yolanda.chen@intel.com>
Cr-Commit-Position: refs/heads/main@{#80020}

Isolates all have difference perf_output_handle_ for perf dump file,
which will corrupt when perfing multiple isolate within one process.
And we could use the same perf_output_handle_ between isolates
within one process to avoid the corrupt. We also use the mutex to protect the perf_output_handle_ change.

Bug: v8:10278
Change-Id: If10a677e4df7d4cd577bbb85bcefe75d76aaf26b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585491
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80019}

With this CL OLD_TO_SHARED slots aren't removed at the end of full GC
anymore. In order to allow for this, invalidated slots need to be
filtered out when iterating the OLD_TO_SHARED remembered set.

* When invalidating slots in an object, that object also needs to be
  recorded for OLD_TO_SHARED.
* The sweeper has to remove invalidated objects in free memory when
  sweeping during a full GC.
* OLD_TO_SHARED slots need to be removed in the evacuated start of
  a page when evacuation fails.
* While local GCs don't need OLD_TO_SHARED, slots need to be filtered
  in order to be able to delete the set of invalidated objects during
  a GC.

Bug: v8:11708
Change-Id: I594307289a797bc0d68edf6793b914805d1285df
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3584113Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80018}

AtomicWord will either alias Atomic32 or Atomic64, depending on the
platform. By slightly changing the definition to encode this directly
instead of relying on intptr_t, we can get rid of a number of
compatibility helpers that cast between pointers to equally sized
atomics.

R=mlippautz@chromium.org

Bug: v8:12425
Change-Id: I04e8433cba5af8cf398d75d7832b84680109cf8b
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586988Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80017}

i::Logger          => i::V8Log
i::PerfJitLogger   => i::LinuxPerfJitLogger
i::PerfBasicLogger => i::LinuxPerfBasicLogger

Note: V8Log is currently still managing instances of other loggers,
this functionality will be moved to a separate class in the future.

Bug: v8:12795, chromium:1316443
Change-Id: Id1b44e65abb7819eb6d6c718a1baa9ed61ad51aa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3593133Reviewed-by: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80016}

Immediate version of the Bitclear instruction can be used for logical
And with some immediates. It can also be used to implement
And(x, Not(imm)) in a single instruction. This patch gives ~0.5% runtime
improvement in one benchmark on Neoverse N1.

Change-Id: Ia926c6746f0c252f81626c6fca21c4dfb41679d9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3160667Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/main@{#80015}

This CL extends SimplifiedLoweringVerifier by a few additional operators.

It fixes the missing type on a LoadElement node generated during
js-typed-lowering, that was detected by the verifier.

Bug: v8:12619
Change-Id: I14e3ece15f6a90e6906c140696dcd2e6b74a2527
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3557510Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80014}

Doc: https://bit.ly/revive-restart-frame
Context: https://crrev.com/c/3582395 (whole feature)

This CL adds the first batch of inspector tests for the upcoming
"Restart frame" feature. Landing the tests upfront allows us to
better discuss the proposed API as well as think early about
corner cases we should test.

The tests check for the functionality of `Debugger.restartFrame`, as
well as the newly added parameter `canBeRestarted` in
the `Debugger.paused` event.

Bug: chromium:1303521
Change-Id: Ibda6d8b6110fce893e0844f8902fbd5d901ae01d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585946Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80013}

Turn on fuzzing for disabled map space to get additional test coverage.

Bug: v8:12578
Change-Id: I82c577c8c24b51df627c873fde95fb239e16d36f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3592892Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80012}

This is a reland of commit 4d8e1846
One of the Mac arm64 bots failed to link an exported thread_local
static variable (crbug/1316800).

Original change's description:
> [rwx][mac] Introduce RwxMemoryWriteScope
>
> ... as a single bottleneck that encapsulates the semantics and
> implementation of fast per-thread W^X permission switching supported
> by Apple Silicon (arm64 M1).
> On other architectures this class is a no-op.
>
> Bug: v8:12797
> Change-Id: Ica842ff9f843e20b7f61fd7e80591e7a1fd29771
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586986
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79994}

Bug: v8:12797
Change-Id: Ifbd15c233bb343f11daa89b1328b5bf65c4806f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3591332Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80011}

This reverts commit 62632c08.

Reason for revert: Performance regressions crbug.com/1315724

Original change's description:
> [interpreter] Optimize strict equal boolean
>
> For strict equal boolean literal like "a===true"
> or "a===false", we could generate TestReferenceEqual
> rather than TestStrictEqual. And in `execution_result()->IsTest()`
> case, we could directly emit JumpIfTrue/JumpIfFalse.
>
> E.g.
> ```
> a === true
> ```
> Generated Bytecode From:
> ```
> LdaGlobal
> Star1
> LdaTrue
> TestEqualStrict
> ```
> To:
> ```
> LdaGlobal
> Star1
> LdaTrue
> TestReferenceEqual
> ```
>
> E.g.
> ```
> if (a === true)
> ```
> Generated Bytecode From:
> ```
> LdaGlobal
> Star1
> LdaTrue
> TestEqualStrict
> JumpIfFalse
> ```
> To
> ```
> LdaGlobal
> JumpIfTrue
> Jump
> ```
>
>
> Bug: v8:6403
> Change-Id: Ieaca147acd2d523ac0d2466e7861afb2d29a1310
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3568923
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: 王澳 <wangao.james@bytedance.com>
> Cr-Commit-Position: refs/heads/main@{#79935}

Bug: v8:6403, chromium:1315724
Change-Id: I65c520590093724e838f738c795d229687efb9de
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3592752Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80010}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/cdced0c..7aeed11

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b3baa6a..28b8ede

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/ab2e7f8..7d2693a

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

Change-Id: Idf76a50daf7cde760a220096b34949b565ccd47a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3591624
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80009}

harmony_intl_best_fit_matcher is on stage for a while and we
found a lot of regression issue that not likely to be address soon
in ICU. Remove it from stage for now so our testing will be under
the configuration without it.

Bug: chromium:1307515
Change-Id: Id051e276ac630ed7b1d05e0ab766c46641bdc199
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585355Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80008}

This reverts commit 4d8e1846.

Reason for revert: Blocks V8 roll, crbug.com/1316800

Original change's description:
> [rwx][mac] Introduce RwxMemoryWriteScope
>
> ... as a single bottleneck that encapsulates the semantics and
> implementation of fast per-thread W^X permission switching supported
> by Apple Silicon (arm64 M1).
> On other architectures this class is a no-op.
>
> Bug: v8:12797
> Change-Id: Ica842ff9f843e20b7f61fd7e80591e7a1fd29771
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586986
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79994}

Bug: v8:12797
Change-Id: I81792567839e72b4147d009c0845b0c0de003eb0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3590752
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Owners-Override: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80007}

https://chromium.googlesource.com/external/github.com/tc39/test262/+log/d7c0a207..33a5433d

Bug: v8:7834
Change-Id: I2c10e4470bf02de864666fa7410ce472a42b8359
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585357Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80006}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/d1e4a47..cdced0c

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

Change-Id: I520013988862e502330041e09b1b811dcd78e581
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3588778
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80005}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9eb2c63..d1e4a47

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

Change-Id: Ib78105e60f3b34cd19c8b0382a0ab19390f4c766
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3588776
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80004}

Access of forwarded map isn't allowed without synchronization. The fix
is to not invoke IsMap() on the forwarded map. If we would want that we
would need a release-store when setting the forwarding pointer on an
evacuated object.

Bug: chromium:1315622, v8:12578
Change-Id: I2f03c810c39875e565bc769c57452af75849044f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585567Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80003}

Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/1fd0dbe..d2858cb

Update ICU to ICU 71-1 (Frank Tang)
https://chromium.googlesource.com/chromium/deps/icu/+/d2858cb

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

Change-Id: I4ac0a12be8eb7e72f5643f805de65ab87d742f71
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3588775
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80002}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9bc850a..9eb2c63

Rolling v8/buildtools/linux64: git_revision:fd9f2036f26d83f9fcfe93042fb952e5a7fe2167..git_revision:1cdd270be9803dbfcdd0343f6104ad4dc30c38ce

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/3cf2f4f..b3baa6a

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/4b2e0bd..ab2e7f8

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/f3fcc8e..7d4922a

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

Change-Id: I3a28ae715d08c5ad4d22ffff4f1703928502669d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3588774
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80001}

Add DateDurationRecord, TimeDurationRecord
and use them in the AO args.
Also change arg and return to struct to avoid passing in pointer for output.

Bug: v8:11544
Change-Id: I34c497ffd341c5cc4693255f51f3dae6d29cfd72
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3575464Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80000}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/67d9897..9bc850a

Rolling v8/buildtools/linux64: git_revision:0cbe341c1a28037ee32d21b589030a7df0b9fdab..git_revision:fd9f2036f26d83f9fcfe93042fb952e5a7fe2167

Rolling v8/buildtools/third_party/libunwind/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind/+log/bbcbce9..1acfbbb

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/90316ac..3cf2f4f

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/3c6f0eb..4b2e0bd

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/9199dc2..f3fcc8e

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

Change-Id: I22240db815caf87394b47cf9d360288588cfae2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586230
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#79999}

Change-Id: I7ff74effe5c1775285e3d3b09c531317adefc4e0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586773
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@{#79998}

... on non-iterable object. In CallPrinter::VisitAssignment,
when found_ is true, we could print node->target to show the
error node value, avoid printing twice for the assignment.

Bug: v8:10854
Change-Id: I5f295f46b5639b715f762935e675598d1d780f98
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586763Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#79997}

Port f8fddd6b

Original Commit Message:

    This is a reland of commit a4216b7b

    Original change's description:
    > [osr] Extract extended OSR checks to BaselineOnStackReplacement builtin
    >
    > .. to reduce Sparkplug code size.
    >
    > Bug: v8:12161
    > Change-Id: I4029a75dfa37f716c285ce27153c077a0a82a341
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3576119
    > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
    > Commit-Queue: Jakob Linke <jgruber@chromium.org>
    > Cr-Commit-Position: refs/heads/main@{#79962}

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

Change-Id: I19a1d0ae69b0576d30d67ad6ed7266b240a51409
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585855Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79996}

- Fix processing lines that are longer than 1 chunk
- Add and use --code-font-size var
- Make minimum panel width 600px
- Track _lineNumber better Processor for easier debugging

Bug: v8:10644
Change-Id: I656e2ac5f0e9ba25ffa4b8c3ecc4b744144a691d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585568Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79995}

... as a single bottleneck that encapsulates the semantics and
implementation of fast per-thread W^X permission switching supported
by Apple Silicon (arm64 M1).
On other architectures this class is a no-op.

Bug: v8:12797
Change-Id: Ica842ff9f843e20b7f61fd7e80591e7a1fd29771
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586986Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79994}

This makes usages less verbose, and is consistent with other existing
enums.
Also, we can use brace initialization to avoid boilerplate when creating
a DynamicTiering value.

Drive-by: Rename a 'kIncludeLiftoff' variable to 'include_liftoff'
because it is not a static constant.

R=jkummerow@chromium.org

Bug: v8:12281
Change-Id: Ie45fdb550241a8b9ca4e2a31b7c27500939fa247
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585566Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79993}

This improves the experience over an SSH connection.

No-Try: true
Change-Id: Id6971f2ad2c75c85f91bea71f7215ce7a948ee71
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586987
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79992}

- Start moving profiler scripts to tools/profiling
- Add linux-perf-d8.py wrapper script that runs `perf record` and
  `perf inject`
- Improve waiting for the d8/chrome process and allow for early
  termination if --timeout is provided
- Allow fractional seconds for --timeout
- Delete run-perf.sh and provide equivalent functionality in
  linux-perf-d8.py

Change-Id: Iac1d6cf895aa7159a9bbb387aca7632df27a0ca3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585951Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79991}

- Rename CodeEventDispatcher to LogEventDispatcher
- Use std::vector instead of std::unordered_set, dispatching speed is
  more important than addition/removal of listeners
- Changing the LogEventDispatcher code to be more code-search friendly
- Use a raw pointer for the LogEventDispatcher instance on the isolate
  it's a single-owned entity

Bug: v8:12795
Change-Id: I139f05431519c18cba33d1506467be918f52658c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3582125Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79990}

This allows to turn two field in the LiftoffAssembler into constants.

R=thibaudm@chromium.org

Bug: v8:12425
Change-Id: Ie39ca73d6bb704b42bd449eed984f426e69deeb5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585956Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79989}

No-Try: true
Bug: v8:11428
Change-Id: Ia06f5a99f851325103ad1860bf44a7313ea541f7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3581723Reviewed-by: Almothana Athamneh <almuthanna@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79988}

We don't actually ever need the MaglevCompiler instance.

Bug: v8:7700
Change-Id: I876353310cf34971b72b08d2113d87caaa255e13
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585957
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79987}

Change-Id: Idb40d6a544cebbdd127eb3c8d71f11adf6ac6a97
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3586227Reviewed-by: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Lutz Vahl <vahl@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79986}

Change-Id: I0dbb0e800908d02a783393c3e329d306316b03c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585949
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79985}