This CL splits the TF type for JSFunction into CallableFunction and
ClassConstructor. This differentiation allows us to lower calls to the
CallFunction Builtin only for functions that we can actually call.
Class Constructors are special, as they are callable but should raise
an exception if called.
By not lowering class constructors to calls to CallFunction (but the
more generall Call) builtin, we can remove the checks for class
constructors from CallFunction (in a follow-up CL).

Bug: chromium:1262750
Change-Id: I399967eb03b2f20d2dcb67aef2243b32c9d3174e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350457Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78445}

- Add I8x16_Popcnt for WASM SIMD

- Add vcpop_m and vfirst_m for riscv64 simulator

Bug: v8:11976
Change-Id: I2b945bb947da0998663cac86f867f09d386b81a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3356201Reviewed-by: Yahan Lu <yahan@iscas.ac.cn>
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Change-Id: I47fe64a50a3fc9ec67308d09cce095811816aea3
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Port 7d3c3cfb

Change-Id: Ic23388e6aa90e8db9af22bb582a99f7f37b9511b
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Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3356040
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Change-Id: Ie08574da9b2192aa250e2cbc0efaf049c6e9026a
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Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/76c77ba..390aa6f

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Change-Id: I297647ebc8b8b3f854ee3297be7c674aef6fd800
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Change-Id: I7e61221775a616943886cdb369eb9bbe5e110a32
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Change-Id: Ice5b9a09d4c4c1a8013cf5c0993c4ec6111f6c51
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Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/773059e..6c6a973

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/db41eed..54c265e

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/9a32aee..71d4e2f

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/a08f552..8b73305

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Wasm values are stored in memory in little endian order even
on BE machines and as a result they need to be manually reversed
after a load.

Other such atomic ops get patched during Wasm compilation or
during code-gen, this is one of the few places where a runtime call is
made to C++ which requires this fix.

As the the runtime stub is used on both TurboFan and Liftoff this
patch will fix both cases.

Up until now the cctest was passing incorrectly as it's mixing the
Wasm memory buffer with TypedArrays. TypedArrays don't have the
LE enforcement and use the native byte order.

With this patch the test is now failing as expected
and is being skipped for now.

Bug: v8:12505
Change-Id: I49fac208f1fab7396b7d9911e803bc047b3b8263
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350744Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78433}

This updates the following set of console builtins in V8 to match the
Console Standard (https://console.spec.whatwg.org) with respect to
(potentially side effecting) type conversions:

  - console.debug
  - console.error
  - console.info
  - console.log
  - console.trace
  - console.warn
  - console.group
  - console.groupCollapsed
  - console.assert

The V8 implementation only performs the type conversions and updates
the arguments in-place with the results from the %String% constructor,
%parseInt%, or %parseFloat% invocations. The actual formatting is
still left completely to the debugger front-end.

To give a concrete example, the following code

```js
const msgFmt = {
  toString() { return 'Message %i' }
};
console.log('LOG: %s`, msgFmt, 42);
```

sends the following parameters to the debugger front-end

```js
["LOG: %s", "Message %i", 42]
```

and it's then the job of the front-end to perform the actual string
substitutions.

It's also worth calling out that the console builtins are only
concerned with %s, %f, %d, and %i formatting specifiers, since
these are the only ones that trigger type conversions, and %o, %O,
and %c can only be implemented in a meaningful way at a higher
level.

Fixed: chromium:1277944
Bug: chromium:1282076
Doc: https://bit.ly/v8-proper-console-type-conversions
Spec: https://console.spec.whatwg.org
Change-Id: I0996680811aa96236bd0d879e4a11101629ef1a7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3352118Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
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Private method loads are compiled to a named load of a private brand,
which always loads a BlockContext. This BlockContext holds the private
methods common to all instances of a class. TurboFan currently considers
JSLoadNamed to be of Type::NonInternal(). Private methods break this
assumption, since BlockContext is of Type::OtherInternal().

This CL changes the typing of JSLoadNamed of private brands to be
Type::OtherInternal().

Bug: v8:12500
Change-Id: I91f39747bf9422bd419d299f44152f567d8be8db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3351167Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78431}

... in order to ease issues debugging.

Bug: chromium:1241665
Change-Id: I7731a37e642acd0aef02570fb70faf0bc65495ff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3353367Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78430}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/4edcc0a..773059e

Rolling v8/buildtools/third_party/libc++abi/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi/+log/603d9d1..2715a6c

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/97da6b1..76c77ba

Rolling v8/third_party/googletest/src: https://chromium.googlesource.com/external/github.com/google/googletest/+log/97a4675..9a32aee

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Change-Id: I845adc1117e177d690a3c2f8587df3369e1dcb55
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3352630
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Design doc:
https://docs.google.com/document/d/1rxM3sDd-ZiOLznqw7MvYraulAPWJSVqC_CztO4YpUTQ/edit

Change-Id: I471ff31f32b7bdd22cb03005c1dcc18aa485ad77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3313793
Auto-Submit: Jianxiao Lu <jianxiao.lu@intel.com>
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This commit allows using unaligned load/store, which is more efficient
for 2 bytes,4 bytes and 8 bytes memory access.
Use RISCV_HAS_NO_UNALIGNED to control whether enable the fast path or not.

Change-Id: I1d321e6e5fa5bc31541c8dbfe582881d80743483
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329803Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
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Change-Id: I6a823ef3b65da2d1010a385db65e368fee9f31e0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3351788Reviewed-by: Toon Verwaest <verwaest@chromium.org>
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Straight-line bytecode with exactly one "next" bytecode (i.e. everything
that can't affect control flow) will always have the same "out" liveness
as the next bytecode's "in" liveness. For those cases, we can save a bit
of time and memory by aliasing the pointers between the bytecode's out
liveness and the next bytecode's in liveness, and skipping copying
between them.

This is done by specializing the current liveness update on whether this
is the first pass (which will allocate and initialize the liveness
bitvectors) or an update pass (which will revisit loops to collect
liveness crossing over the back-edge, and propagate this liveness
through the loop bodies). On the first pass, we can delay allocation of
the out liveness until we know it needs to be union of multiple in
livenesses, and on the update pass we can skip it if it is an alias.

As a drive-by, tweak BitVector::CopyFrom to require copying from a
vector with the same size (same as Union or Intersect), and move the
only different sized vector use (in Resize) to be inline.

Change-Id: Iad1b2e1b927a37ad925ef68e2a224152aaa2ba18
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350452
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Change-Id: I5523f61627cab0ff0b921e51038396c642dad017
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3351784Reviewed-by: Toon Verwaest <verwaest@chromium.org>
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[infra] Increase timeout (1h → 2h) and bump shards (8 → 10) due to lower performance bots (8 → 4 cpus)

Bug: chromium:1279426
Change-Id: I6e4d010ae57541b051529a76b11d265d34f36010
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350579
Auto-Submit: Alexander Schulze <alexschulze@chromium.org>
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Port b36368d2

Change-Id: Icac5b041f2af423b2b81eab53bfc56644ca29374
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347228Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
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Bug: v8:12502

Change-Id: I8d1b599fc945e276b70901953368768594470204
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3343861Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
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Change-Id: I8b19de82af5e3f856f22b6f79d81dc6aee8a3d38
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347231
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Shared array buffers are not tracked by the garbage collector, which
makes the fuzzer run out of memory pretty quickly. Since shared memory
is not needed any more for testing atomics, we can just make the memory
non-shared again.

This also improves the performance of the fuzzer (execs/s) by more than
2x locally.

R=ahaas@chromium.org

Bug: chromium:1281419
Change-Id: Ic7803617d6a14aaa698d9181327ec20b21d29faa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350764Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
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The motivation is being able to build Chrome/Mac/Intel on an
Apple Silicon mac.

Depends on https://chromium-review.googlesource.com/c/chromium/src/+/3348020

- Correctly set v8_snapshot_toolchain when targeting x64 on an arm64
  host (always use the clang_ toolchain for now since that's all
  that's needed at the moment)

- Check V8_HOST_ARCH in immediate-crash.h. In V8 terminology, "host"
  is the machine the snapshot generation runs on, while "target" is the
  machine that V8 runs on when it JITs. IMMEDIATE_CRASH runs on the
  host. Up to now, target arch x64 implied host arch x64 so the old code
  happened to work too, but this is the correct macro (and it makes this
  cross scenario work).

- In assembler-x64.cc, only compile the code that probes the current CPU
  when running on an intel host. (There's an early return for snapshot
  generation anyways.)

Bug: chromium:1280968
Change-Id: I4821a5994de8ed5f9e4f62184dc6ab6f5223bc3f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3348040Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78417}

Report young generation GC statistics to the Recorder API.
These will be used by Blink to populate UMA histograms.
Existing UMA reporting in V8 remains as is for now and will be removed
in a followup.

With this CL, minor mark-compaction statistics are reported as part
of V8.GC.Cycle.*.Young. Also V8.GCScavengeReason is migrated to
V8.GC.Cycle.Reason.Young.

This CL goes together with:
https://chromium-review.googlesource.com/c/chromium/src/+/3320388

Bug: chromium:1154636
Change-Id: Ia1030c80d4bc75ac6e176ed60f838929ddb9b20f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3320430Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78416}

We clear the worker state in the worker thread after processing
all messages (and getting the terminate signal). This could cause
a race condition when interacting with the worker from the main thread.

This was previously working and broke with https://crrev.com/c/3318669

- Add is_joined_ variable which is mutex guarded
- Simplify Worker::State
- Mutex guard task_runner_ access

Bug: v8:12487
Change-Id: Ib53e5a1a636cb29db50efdb63526b0023a5ea768
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3345005Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78415}

Without simple FP aliasing, a SIMD register will overlap with two
floating-point registers. If we spill an FP register to use it for a
SIMD operation, we need to make sure to also spill the "sibling" FP
register.

R=leszeks@chromium.org

Bug: v8:12330, chromium:1271244
Change-Id: I7fdc6cb8da35d66b4862a8a913ba4ff906cf05aa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347576Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78414}

Initialize the (thread-local) memory protection key permissions for any
isolate that joins the wasm engine. Otherwise it can happen that an
isolate gets Wasm code from the cache without ever compiling anything
(hence without ever changing memory protection key permissions), and
then it would not be allowed to access (read or execute) the code.

I tested this change manually on a PKU-enabled devices. The new test
crashed before the fix, and completes successfully afterwards.

R=ahaas@chromium.org

Bug: v8:11974, chromium:1280451
Change-Id: I90dded8b4fdaa8cf34b44107291d3f525ce16335
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347563Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78413}

After https://crrev.com/c/3315446 we allocate the memory protection key
unconditionally, so the method is redundant.

R=ahaas@chromium.org

Bug: v8:11974
Change-Id: I205a0cda86dfaf394c68788a662241d76a3f8510
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347562Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78412}

The mid-tier register allocator could not handle the case that the same
virtual register was used for
- the input corresponding to the 'same-as-input' output, and
- another 'unique register' input.

In this case, it cannot choose the already assigned register for the
'unique' register. Instead, it needs to allocate a new register and
introduce a gap move to duplicate the input value in two different
registers.

FYI, the instruction where the current logic failed was:
  (v5(0), v6(R)) = IA32AddPair v7(R) v7(*) v8(R) v7(R)
(where the last input was marked 'unique').

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

Bug: v8:12330, chromium:1272204
Change-Id: Ie4843aa9f5e027afe503e0481a4acdfa325dfe0e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347821Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78411}

Bug: chromium:1279426
Change-Id: Ia8ce4598da5f5f31fa282c9e7ff330b39caa68d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350451
Auto-Submit: Alexander Schulze <alexschulze@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78410}

If a name is defined for a wasm function, we retrieve it from the module
and use it for tracing.

Change-Id: I42da12d2476af573017daaa3f216cca8a95efbbb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3344646Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78409}

R=machenbach@google.com,liviurau@google.com,alexschulze@google.com

Bug: v8:12496, v8:11211
Change-Id: I58c224114ee9c7cde64ffed4ddf639244507db3b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3333925
Auto-Submit: Tamer Tas <tmrts@chromium.org>
Owners-Override: Liviu Rau <liviurau@google.com>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78408}

Avoid the trailing ";" after the last parallel gap move. Instead, make the
semicolon part of the delimiter between moves.

Before:
gap ([stack:8|w32] = [constant:0];) ([edi|R|w32] = [constant:7]; [edx|R|w32] = [constant:8];)
After:
gap ([stack:8|w32] = [constant:0]) ([edi|R|w32] = [constant:7]; [edx|R|w32] = [constant:8])

R=mslekova@chromium.org

Bug: v8:12330
Change-Id: If9f3d67f09e48f717e839fa7fb8968f20bb58b16
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3347820Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78407}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/e37fef4..6353c5a

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

Change-Id: I730283874d689afea45eb5347aa998bd50d1a478
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3350025
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@{#78406}