Huge functions can take a really long time (several minutes) in register
allocation. This is caused by a big number of virtual registers combined
with a big number of blocks.
We can avoid such long-running register allocation by falling back to
the mid-tier register allocation if we detect a huge number of virtual
registers.
Note that this is mostly relevant for bigger WebAssembly modules, but we
implement it as a general TurboFan flag.

The flag is off by default for now, since there seem to be bugs lurking
in the mid-tier register allocator. Once those are fixed, we can stage
it behind --future and then ship it.

R=mslekova@chromium.org
CC=thibaudm@chromium.org

Bug: v8:12320
Change-Id: Iff14de456c2b3a91ee2b2b12221295dd56b69463
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231336Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77461}

mjsunit/regress/regress-crbug-9161 had two spinlocks on an atomic:

  1. WaitUntil(lock == kStageRunning)
  2. WaitUntil(lock == kStageDone)

But, in theory the worker updating the "lock" could progress all the way
to kStageDone before the first loop manages to check the lock value
again.

We can make this more robust by checking:

  1. WaitUntil(lock != kStageInit)
  2. WaitUntil(lock == kStageDone)

That way both loops check for _any_ state past the state they want to
progress past.

Bug: v8:11437
Change-Id: I5220e61070a305301c678928edb0925c04dae970
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231339
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77460}

... by explicitly passing pointer compression cage base value to various
IsXXX() and map() calls in order to avoid using incorrect auto-computed
cage base value when applied to objects allocated in external code space.

This CL also introduces IsCodeObject(HeapObject) predicate which checks
the IS_EXECUTABLE bit in the page header's flags.

Bug: v8:11880
Change-Id: Ib44398c3125392e46e939044a9bd27e09d7944d5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229368Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77459}

This CL adds support for BigInt.asIntN, the necessary operations and
extensions of the compiler's type system to allow lowering of BigInts
to word64 representations that are interpreted as signed 64 bit BigInts.

Bug: v8:9407
Change-Id: Id4f1f45437c1caf94e01c7b4e063c2ae2386c88a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3198070
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77458}

We increment the size before enqueueing the next element.
This guarantees that size > 0 when decrementing.

Bug: v8:12325
Change-Id: Ida256d9b22a9dd5cacb21312f099ee7186e2ca53
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231335
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77457}

A few of the changes added by https://crrev.com/c/3229379 are
causing compilation errors on platforms without sparkplug.

Change-Id: Ic6088b33ba910ae5a96881fa7609e30d35db5d8a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226548Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#77456}

Disable --concurrent-inlining when v8_dict_property_const_tracking is
enabled, since the latter doesn't support the former. Add statusfile
variables to mark this as an incompatible flag, and otherwise disable it
via flags.

Change-Id: Ie2e7dac6f4a1ddc97e7e7f4d4d2c77e638e216a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229565
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77455}

Bug: v8:10391
Change-Id: Ia123d8034c4ade76c9843df5d947fdc4ee3d8e35
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226337Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77454}

Previously having a `Symbol.toStringTag` property holding a string
somewhere in the prototype chain would always take predence over trying
to determine a reasonable name from the "constructor" (in case of
subclassing). This would lead to confusing behavior when diagnosing
objects in DevTools, for example

```js
class A extends URLSearchParams {};
new A()
```

would show `URLSearchParam` as class name for the instance rather than
`A`.

With this CL, we change the lookup logic to explicitly check for
`Symbol.toStringTag` and "constructor" along each step of the prototype
chain (skipping the "constructor" for the leaf object) and pick the
first one that yields a string (that is the function debug name in case
of "constructor").

Fixed: chromium:980018
Change-Id: Ic920b4bae02f965bc383c711f8de89c0de55fcac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231078
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Kim-Anh Tran <kimanh@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77453}

`a || b` only evaluates b if a is false. `a | b` always evaluates
both a and b. If a and b are of type bool, `||` is usually what you
want, so clang now warns on `|` where both arguments are of type bool.

In this case the difference isn't important, but || is more
conventional to express this

Bug: chromium:1255745
Change-Id: I8fb090abc9863f7db8761bddb1440613a49bc84b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3231077
Auto-Submit: Hans Wennborg <hans@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77452}

Bug: chromium:1203071
Change-Id: I32481d9918aa4a86510570dfb4997f7645f0df23
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226965
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77451}

Port the rest part of 9d3c9d47

The first part is at:
https://chromium-review.googlesource.com/c/v8/v8/+/3212059

Bug: v8:7748
Change-Id: I8b39deec2eee35511f56e826d92bf52e32a81daf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226551Reviewed-by: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#77450}

No-Try: true
Bug: v8:12324
Change-Id: I4d8ea351b0aecaad704a0d0aa2e67eff4ce5eff0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226336
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77449}

This is a reland of 929b83fb

This version of the CL also fixes initialization of the
marking_barrier_ in the LocalHeap constructor.

This CL also got rebased on Victor's CL in https://crrev.com/c/3229361.
It added a code_space_allocator_ in LocalHeap which needs to be
initialized a bit later on the main thread as well.

Original change's description:
> [heap] Attach to shared isolate after setting up main thread
>
> Attach to the shared isolate after the main thread was set up. Otherwise
> it could happen that a shared GC initiated from another isolate might
> see no threads are running and performs the safepoint operation in the
> middle of isolate deserialization.
>
> We use DisallowSafepoints to check that the isolate doesn't join a
> global safepoint before deserialization is complete. DisallowSafepoints
> used to prevent only invocations of Safepoint() but was updated to
> also prevent Park() and Unpark() invocations. Each state change could
> cause the thread to reach a safepoint, which would allow a shared GC
> to run.
>
> We now also DCHECK that every isolate has at least one local heap and
> that shared collections aren't started before deserialization is
> complete.
>
> Bug: v8:11708
> Change-Id: Iba3fb59dd951d5ee4fc9934158062287302fc279
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3221157
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77424}

Bug: v8:11708
Change-Id: I7d44e4a5f76cc09092c2444cede10e9331222c1d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229361Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77448}

This is a reland of dca83ff7

Relanding without changes, looks like the bot that failed succeeded
again before the revert landed (https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN/38915/overview)

Original change's description:
> [snapshot] Fix two stress_snapshot failures
>
> 1. Stress snapshot discards code on SFIs, which breaks flushing
>    invariants. Add --stress-snapshot to those invariants.
> 2. Another test failing on IsScript, added it to the disabled list.
>
> Change-Id: Ic415923a9cc96d34b74f7450b29be99c1b53d077
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229375
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77430}

Change-Id: I18fd290c3794d90addc2a94765d57a3ee3ceab86
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229563
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77447}

Bug: v8:12228
Change-Id: I434b07e3d7a2e270dc7dd26950b9dd047eb46a56
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3219944Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Yolanda Chen <yolanda.chen@intel.com>
Cr-Commit-Position: refs/heads/main@{#77446}

Young generation collection requires that full GCs unmark before
starting marking.

Bug: v8:12324
Change-Id: Id6cc218057252cbf0664326126f34b07ac8ea247
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229570
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77445}

[1] fixes the behavior of StaNamedOwnProperty to no longer do prototype
lookups. This lets us revert [2] and go back to using the fast path in
the clone spread object literal bytecode.

The test case from [2] is kept.

[1] https://chromium-review.googlesource.com/c/v8/v8/+/2795831
[2] https://chromium-review.googlesource.com/c/v8/v8/+/3178969

Bug: v8:9888, chromium:1251366
Change-Id: I9d2cb69b803c403f63365f55d27c4de20ff7dafb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3224666Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Patrick Thier <pthier@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77444}

No functionality change expected.

Most scopes are renamed new_scope.

Bug: v8:12244,v8:12245
Change-Id: I85d23b0ba6971f51b9bbfc1f3afeb89fb70f035e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3227268
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77443}

No functionality change expected.

Most scopes are renamed new_scope or new_handle_scope. For some test
cases the outer scope is renamed to outer_scope since there are
multiple inner scopes.

Bug: v8:12244,v8:12245
Change-Id: I85953617e54f2140fa88c593eb7c186b570fdd04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3227266Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77442}

Avoid generating switch statements with only a default case. Instead,
when there are no instructions that can trap, simply have
HasMemoryAccessMode() return false. This avoids a MSVC warning when
doing a 32-bit build.

To do this, remove empty TARGET_ARCH_OPCODE_WITH_MEMORY_ACCESS_MODE_LIST
definitions from instruction-codes-$arch.h files.

Change-Id: Ifed76eb9cbca169f30c188c1999e1e9be0b2c6aa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3224807Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77441}

This reverts commit ee50ba88.

Reason for revert: builders purple

Original change's description:
> [infra] Split Linux arm sim lite CI builders
>
> Bug: v8:12253
> Change-Id: I9cb67901a5711f251baa411ff57d84fa2049562a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3208029
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77439}

Bug: v8:12253
Change-Id: Ifa77aead25746ce368b6207d9e1861b0006664bf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229566
Auto-Submit: Michael Achenbach <machenbach@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/main@{#77440}

Bug: v8:12253
Change-Id: I9cb67901a5711f251baa411ff57d84fa2049562a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3208029Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77439}

Change the logic behind GenerateOneOf so that not only
ref_null would appear almost everytime. Increase the probability
of other alternatives to appear as well.
Change the name of GenerateOptRef to GenerateRef.

Bug: v8:11954
Change-Id: I8bff1661c3d3a91105bca1ffa68e1e9b0b662240
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229367
Commit-Queue: Maria Tîmbur <mtimbur@google.com>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77438}

This is a reland of 0c459ff5

Original change's description:
> [baseline] Concurrent Sparkplug n-thread with synchronised queue
>
> Installation in the main thread.
> Design doc: https://docs.google.com/document/d/1GmEiEt2VDmhY_Ag0PiIcGWKtvQupKgNcMZUvgpfQksk/edit?resourcekey=0-seYa-QJsx1ZbjelluPG1iQ
>
> Change-Id: Ifc6eccd44efdf377320c64cf9957c6060334e543
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3186831
> Commit-Queue: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77431}

Change-Id: I4ea8f3c026a0a448afcb16f57517ee75cedaf83f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229379
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77437}

The gdb DCHECK frame skipping automatically skips over all the abort
etc. frames to get you to that DCHECK callsite you're actually looking
for.

However, this is annoying if you tried to call a function with a
breakpoint from the gdb prompt; the frame skipping wold skip over your
breakpoint back up to the failing DCHECK.

Now, we abort the frame walk on dummy frames inserted by gdb execution.

Change-Id: I2cf89ea9219374ad7c562c6eb13afe471038b033
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229376
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77436}

... by updating the checks for not_mapped_symbol root and using proper
cage base values depending on the host object type.

Bug: v8:11880
Change-Id: I28908cbb5b1023addaee248028661d480734e29c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3222760
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77435}

This reverts commit dca83ff7.

Reason for revert: Speculative revert for https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN/38914/overview

Original change's description:
> [snapshot] Fix two stress_snapshot failures
>
> 1. Stress snapshot discards code on SFIs, which breaks flushing
>    invariants. Add --stress-snapshot to those invariants.
> 2. Another test failing on IsScript, added it to the disabled list.
>
> Change-Id: Ic415923a9cc96d34b74f7450b29be99c1b53d077
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229375
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77430}

Change-Id: Ied1bd9e10389f361cd6e39a1c985ee134f098629
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229561
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#77434}

This reverts commit 0c459ff5.

Reason for revert: breaks build on M1 (where W^X flag is RO) https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac%20-%20arm64%20-%20release%20builder/6999/overview

Original change's description:
> [baseline] Concurrent Sparkplug n-thread with synchronised queue
>
> Installation in the main thread.
> Design doc: https://docs.google.com/document/d/1GmEiEt2VDmhY_Ag0PiIcGWKtvQupKgNcMZUvgpfQksk/edit?resourcekey=0-seYa-QJsx1ZbjelluPG1iQ
>
> Change-Id: Ifc6eccd44efdf377320c64cf9957c6060334e543
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3186831
> Commit-Queue: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77431}

Change-Id: I45a952aacf0ad29ebb703a742fdc6da7b0b7c826
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229378
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77433}

GCC on x86 wants alignof(std::max_align_t) == 16 which is not
supported by Oilpan. Stricter checks in
MakeGarbageCollectedTraitBase::Allocate() cover problems per type.

Bug: v8:12295
Change-Id: Icdd6517a2828280ed19279ca45004e26c99505a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229372
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77432}

Installation in the main thread.
Design doc: https://docs.google.com/document/d/1GmEiEt2VDmhY_Ag0PiIcGWKtvQupKgNcMZUvgpfQksk/edit?resourcekey=0-seYa-QJsx1ZbjelluPG1iQ

Change-Id: Ifc6eccd44efdf377320c64cf9957c6060334e543
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3186831
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77431}

1. Stress snapshot discards code on SFIs, which breaks flushing
   invariants. Add --stress-snapshot to those invariants.
2. Another test failing on IsScript, added it to the disabled list.

Change-Id: Ic415923a9cc96d34b74f7450b29be99c1b53d077
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3229375
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77430}

It was missing on the slow path before.

Bug: chromium:1259902, chromium:1260746, v8:10793
Change-Id: I9ae5f9efd552754a725f624307dd7caaeacd496f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226541Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Cr-Commit-Position: refs/heads/main@{#77429}

This CL improves wasm inlining heuristics in Turbofan, for an average
8,5% performance improvement in selected benchmarks.

Changes:
- In WasmInliner::Reduce(), only collect inlining candidates into a
  priority queue, according to WasmInliner::LexicographicOrdering.
  Move actual inlining to Finalize().
- Remove the InlineFirstFew heuristic. Add two limits to inlining:
  Maximum relative size increase (reversely proportional to the function
  size), and absolute size increase.
- Pass information about call frequency from liftoff-collected feedback
  to the WasmInliner though the wasm module.
- Run wasm inlining along other optimizations in the pipeline.
- Split inlining and speculative inlining tests.

Bug: v8:7748, v8:12166
Change-Id: Iccee22093db765981889a24451fb458dfce1f1a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3222764Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77428}

Bug: chromium:1260577
Change-Id: I8944f2f1dda22ab9a24e389a686c707deb5f18c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3225936Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77427}

Change-Id: I2150c83eeb8939801aeed7e7bb0aec92f8f91733
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3227756
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77426}

This reverts commit 929b83fb.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20UBSan/18725/overview

Original change's description:
> [heap] Attach to shared isolate after setting up main thread
>
> Attach to the shared isolate after the main thread was set up. Otherwise
> it could happen that a shared GC initiated from another isolate might
> see no threads are running and performs the safepoint operation in the
> middle of isolate deserialization.
>
> We use DisallowSafepoints to check that the isolate doesn't join a
> global safepoint before deserialization is complete. DisallowSafepoints
> used to prevent only invocations of Safepoint() but was updated to
> also prevent Park() and Unpark() invocations. Each state change could
> cause the thread to reach a safepoint, which would allow a shared GC
> to run.
>
> We now also DCHECK that every isolate has at least one local heap and
> that shared collections aren't started before deserialization is
> complete.
>
> Bug: v8:11708
> Change-Id: Iba3fb59dd951d5ee4fc9934158062287302fc279
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3221157
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#77424}

Bug: v8:11708
Change-Id: I0633150b6b40b297a335a39bf1a087ca93592e04
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3225937Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77425}

Attach to the shared isolate after the main thread was set up. Otherwise
it could happen that a shared GC initiated from another isolate might
see no threads are running and performs the safepoint operation in the
middle of isolate deserialization.

We use DisallowSafepoints to check that the isolate doesn't join a
global safepoint before deserialization is complete. DisallowSafepoints
used to prevent only invocations of Safepoint() but was updated to
also prevent Park() and Unpark() invocations. Each state change could
cause the thread to reach a safepoint, which would allow a shared GC
to run.

We now also DCHECK that every isolate has at least one local heap and
that shared collections aren't started before deserialization is
complete.

Bug: v8:11708
Change-Id: Iba3fb59dd951d5ee4fc9934158062287302fc279
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3221157
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77424}

Bug: none
Change-Id: If62875a1f907ac33b6c6e6a894099a83bba71783
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3225935Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77423}

Functions affected:
filter
find
findIndex
findLast
findLastIndex
forEach
reduce
reduceRight

Bug: v8:11111
Change-Id: Ifb40143e5b6ed4a3eb30cb25332e2387009e3274
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3205421
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77422}