This CL simplifies IC code since we no longer need to keep
feedback slot indices in both Smi and IntPtr form and as
a result it should improve overall performance of --no-opt
mode on Octane by ~1%.
Bug: v8:10047
Change-Id: Ib717697cdb805c9f93286e9c62ee8a63361d3560
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1965586
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66585}
Add off-thread support for class boilerplate allocation, removing a
previously "unreachable" overload. Notably, this requires support for
off-thread allocation of Dictionaries and DescriptorArrays. Due to
template fun, the off-thread allocation of Dictionaries in particular
requires some amount of boilerplate (no pun intended).
Bug: chromium:1011762
Change-Id: I37139d924858e31e45d369742329826784a8f614
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2080370
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66580}
Add the remaining missing templatizations to allow an initial wiring in
of the off-thread factory into streaming compilation finalization.
The off-thread finalization is behind a flag, disabled by default:
--finalize-streaming-on-background
When the flag is enabled, background tasks will perform perform the
finalization during their background execution, and will release the
parser and compilation jobs once they are no longer needed.
The implementation is complete enough for performance testing, but not
enough for launch. Notably, there is no support for:
* Class boilerplates (the code is marked unreachable),
* Exceptions during finalization, i.e. parse/compile warnings/errors,
* Allocation sampling,
* Logging,
* Asm.js,
* Parallel complication tasks
* Forced source positions (for "NeedsDetailedOptimizedCodeLineInfo()")
This patch also adds some tracing events for the various stages of the
off-thread finalization (including the main-thread merge) for further
performance improvements.
Bug: chromium:1011762
Change-Id: Ia44fa56975dd689f0d92c1543b294cdb063eb199
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066965
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66566}
Although AccessorInfos are technically mutable, in practice they are not
mutated after initialization, and they are guaranteed to be immortal and
immovable. So, we can safely make them accessible from the off-thread
factory, as long as the user promises to not try to mutate them. This is
necessary for off-thread class boilerplate creation.
Bug: v8:10218
Bug: chromium:1011762
Change-Id: Id3108a2324a000ea0616b472dd77aed65b1f908e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2080351
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66563}
The scope disables garbage collection and should be only used in
heap, deserializer, isolate bootstrap, and testing.
Change-Id: Ide95926ef32fd9362cd9134e883e1bd626cc3b11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2083292
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66557}
Negating 1 << 31 as a signed integer overflows and
causes undefined behaviour hence SetS390OverflowCode
may never get set.
Change-Id: I91379a53752de322cee4541cf44fb65338a614e6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2081335
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#66540}
Stack parameters in the StubCallDescriptor were set to the wrong type. I
changed it now so that for stack parameters that are specified in the
CallInterfaceDescriptor, type specified type is used. All other
parameters are assumed to be tagged, as it has been until now.
Original change's description:
> [wasm] Refactor AtomicWait implementation
>
> The existing implementation included aspects that are not
> straight-forward to implement in Liftoff and seemed inefficient:
> * Convert the timeout in WebAssembly code from I64 to F64, just to
> convert it back in the runtime.
> * On 32-bit platforms this conversion needs an additional C-call.
> * Split the I64 expected value from I64 into two I32 values in the
> wasm-compiler.
> * Ideally the int64-lowering takes care of 32-bit specific handling.
>
> With this CL the timeout and the expected value are passed as I64 to
> the runtime (a builtin moves the I64 into a bigint for that). The
> int64-lowering takes care of 32-bit platforms. There are special
> builtins for 32-bit platforms, but they are written such that ideally
> also the int64-lowering could create them.
Bug: v8:10108
Change-Id: Ib87b543666708457c0d686208a86e46cdca3f9a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2080362
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66533}
The frame created by the WasmDebugBreak builtin now has a separate frame
type, which will (later) allow to inspect the spilled registers.
Once Liftoff supports reference types, this frame will also need special
GC support for spilled heap references.
R=jkummerow@chromium.org
Bug: v8:10222
Change-Id: I110e51d1e6d09b0f44dcdd1cdcaafa2eaa64fddd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2083013
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66531}
Remove OffThreadHandle, HandleOrOffThreadHandle, and HandleFor, and
make the OffThreadIsolate allocate "real" Handles. Rather than using
the main-thread Isolate's handle scopes, these off-thread Handles are
backed by a Zone, which is tied to the lifetime of the nearest
OffThreadHandleScope. Eventually, we'll likely want to merge the
implementation of OffThreadHandleScope and HandleScope, but currently
the latter is too tightly coupled to the main thread to do so.
Bug: chromium:1011762
Change-Id: I2a6361931fe3f90a7bef4cc28ee42155fa8d062f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2071865
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66516}
This reverts commit 77d4e23047.
Reason for revert: verify csa build bot broken
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20verify%20csa/16218?
Original change's description:
> [wasm] Refactor AtomicWait implementation
>
> The existing implementation included aspects that are not
> straight-forward to implement in Liftoff and seemed inefficient:
> * Convert the timeout in WebAssembly code from I64 to F64, just to
> convert it back in the runtime.
> * On 32-bit platforms this conversion needs an additional C-call.
> * Split the I64 expected value from I64 into two I32 values in the
> wasm-compiler.
> * Ideally the int64-lowering takes care of 32-bit specific handling.
>
> With this CL the timeout and the expected value are passed as I64 to
> the runtime (a builtin moves the I64 into a bigint for that). The
> int64-lowering takes care of 32-bit platforms. There are special
> builtins for 32-bit platforms, but they are written such that ideally
> also the int64-lowering could create them.
>
> R=jkummerow@chromium.org, binji@chromium.org
>
> Bug: v8:10108
> Change-Id: I2dbba5839779961b1c5bde4c23fc3f38f1895a52
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2071867
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Ben Smith <binji@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66497}
TBR=binji@chromium.org,jkummerow@chromium.org,ahaas@chromium.org,clemensb@chromium.org
Change-Id: If284aa07eedddd2fbea4df8c53c7d371cac1d42e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10108
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2080250
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66498}
The existing implementation included aspects that are not
straight-forward to implement in Liftoff and seemed inefficient:
* Convert the timeout in WebAssembly code from I64 to F64, just to
convert it back in the runtime.
* On 32-bit platforms this conversion needs an additional C-call.
* Split the I64 expected value from I64 into two I32 values in the
wasm-compiler.
* Ideally the int64-lowering takes care of 32-bit specific handling.
With this CL the timeout and the expected value are passed as I64 to
the runtime (a builtin moves the I64 into a bigint for that). The
int64-lowering takes care of 32-bit platforms. There are special
builtins for 32-bit platforms, but they are written such that ideally
also the int64-lowering could create them.
R=jkummerow@chromium.org, binji@chromium.org
Bug: v8:10108
Change-Id: I2dbba5839779961b1c5bde4c23fc3f38f1895a52
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2071867
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66497}
This adds static types to the argument class that accesss the arguments in the
stack. kRuntime arguments are used by runtime functions and kJS arguments
are used to access the JS stack (eg. builtins).
The distinction allows the reversal of arguments in the JS stack without
changing the runtime arguments order.
Bug: v8:10201
Change-Id: I7c08164d53c4071c7910836fa733dee8ff7fa680
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066985
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66470}
Context: This is part of a bigger CL:
https://chromium-review.googlesource.com/c/v8/v8/+/2043840
In order to get rid of the arguments adaptor frame, we will reverse
the JS arguments in the stack. Some macros will need to reverse its
arguments as well, we will do that using helper macros in another CL
(see src/builtins/builtins-descriptors.h in 2043840).
For that we need to stringify the name kDontAdaptArgumentsSentinel,
which cannot be done if '::' is in its name.
This CL should not have any impact performace/memory on V8.
Bug: v8:10201
Change-Id: If76b7f457c179fbddddfe1a0ae038d2f1210ad2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066969
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66432}
Renaming the JS-visible identifiers and strings is left for a future CL.
FinalizationGroup was renamed at Feb 2020 TC39, to better signal that if
a FinalizationRegistry dies, the finalization actions registered with it
may no longer be performed.
Bug: v8:8179
Change-Id: I0d676a71a4a67d2b7175994a67458a6158065844
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2055381
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66416}
This change is needed for profiling of Wasm code that calls C-function
to ignore the C-stack above the Wasm stack that otherwise couldn't be
parsed otherwise.
R=clemensb@chromium.orgR=petermarshall@chromium.orgR=jgruber@chromium.org
Bug: chromium:1045860
Change-Id: Ia0788189ca666e77f1564576903c1dc4fd745b8d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066964
Commit-Queue: Emanuel Ziegler <ecmziegler@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66408}
Relanding the Fast C API code with fix for UBSan undefined behavior
issue.
Design doc:
http://doc/1SAHn7d8M7CoazTd1laVF8gduFC_ikZWiYuytrR9c4Oc/
This CL implements basic API with integer and pointer types marshaling.
What is not supported yet:
- sequences
- annotations
- floating point arguments
- 64-bit arguments
- exception handling
- InstanceOf checks for the pointer types
- functions with non-void return type
Bug: chromium:1052746
TBR=yangguo@chromium.org,mvstanton@chromium.org,neis@chromium.org,leszeks@chromium.org,verwaest@chromium.org,mslekova@chromium.org
Change-Id: Ifca9de3156cf18c9dac0d14c19f8d6a7004cad83
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066971
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66391}
After support for ARCH_PPC was dropped, it became a subset of
ARCH_PPC64. If you compile for ppc64, then you set the ARCH_PPC64
define which also sets the ARCH_PPC define.
To be able to again support ppc (32 bit) those defines should be
split up again.
This commit only splits up the defines but does not introduce a
working ARCH_PPC variant.
Bug: v8:10102
Change-Id: I64e0749f8e5a7dc078ee7890d92e57b82706a849
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1989826
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Milad Farazmand <miladfar@ca.ibm.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66390}
Jitless mode does not allocate executable memory, so we can avoid reserving
memory in such configurations.
Bug: v8:10033
Change-Id: Ie6a943084e3bade85848e3219cb4d8779ed34830
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1981505
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66388}
Every simulator supports this flag except for Arm64 so let's add it. The
ExecuteInstruction() loop being performance sensitive, we avoid updating a
counter on a every loop unless the flag is set.
Change-Id: I5d40e9f3f03b743b4f354e31e9bfda32789ec098
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2061555
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#66368}
This reverts commit 4e11ad92f3.
Reason for revert: Signed int overflow in TestFastApiCalls in UBSan https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/9976
Original change's description:
> [turbofan] Fast API calls from TurboFan
>
> Relanding the Fast C API code with fix for arm sim lite build.
>
> Design doc:
> http://doc/1SAHn7d8M7CoazTd1laVF8gduFC_ikZWiYuytrR9c4Oc/
>
> This CL implements basic API with integer and pointer types marshaling.
>
> What is not supported yet:
> - sequences
> - annotations
> - floating point arguments
> - 64-bit arguments
> - exception handling
> - InstanceOf checks for the pointer types
> - functions with non-void return type
>
> Bug: chromium:1052746
>
> TBR=yangguo@chromium.org,mvstanton@chromium.org,neis@chromium.org,leszeks@chromium.org,verwaest@chromium.org,mslekova@chromium.org,nicohartmann@chromium.org
>
> Change-Id: I4421ce817e3b6159a38d2cb39fb97847f128e648
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2064223
> Reviewed-by: Michael Stanton <mvstanton@chromium.org>
> Commit-Queue: Michael Stanton <mvstanton@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66344}
TBR=mvstanton@chromium.org
Change-Id: I63bde3e0b7f92506fd8ec6d39683524bc9811aa6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1052746
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2062739
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66347}
Relanding the Fast C API code with fix for arm sim lite build.
Design doc:
http://doc/1SAHn7d8M7CoazTd1laVF8gduFC_ikZWiYuytrR9c4Oc/
This CL implements basic API with integer and pointer types marshaling.
What is not supported yet:
- sequences
- annotations
- floating point arguments
- 64-bit arguments
- exception handling
- InstanceOf checks for the pointer types
- functions with non-void return type
Bug: chromium:1052746
TBR=yangguo@chromium.org,mvstanton@chromium.org,neis@chromium.org,leszeks@chromium.org,verwaest@chromium.org,mslekova@chromium.org,nicohartmann@chromium.org
Change-Id: I4421ce817e3b6159a38d2cb39fb97847f128e648
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2064223
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66344}
There are cases where we push FP and LR to the stack even though we have
already created a frame and already stored them.
Avoid doing this, by cleaning up the caller- and callee-saved
register lists, and passing a LinkRegisterStatus argument to
TruncateDoubleToI.
Change-Id: I652e7ec346a99e94617f1ec6b13935f5d2f73e7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2060505
Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66330}
In the spec, WeakRefs that are dereferenced are kept alive until there's
no JS on the stack, and then the host is expected to call
ClearKeptObjects to clear those strong references [1]. HTML calls
ClearKeptObjects at the end of a PerformMicrotaskCheckpoint [2].
In V8, leaving this up to the embedder is error prone in the same way
the deprecated FinalizationGroup callback APIs were error prone: it
depends on the embedder doing the right thing. This CL moves the call to
ClearKeptObjects to be after running of microtasks within V8.
However, the Isolate::ClearKeptObjects API should not be removed or
deprecated in case an embedder uses an entirely custom MicrotaskQueue
implementation and invokes MicrotaskQueue::PerformCheckpoint manually.
[1] https://tc39.es/proposal-weakrefs/#sec-clear-kept-objects
[2] https://github.com/whatwg/html/pull/4571
Bug: v8:8179
Change-Id: Ie243804157b56241ca69ed8fad300e839a0c9f75
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2055967
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66327}
When running microtasks, the auto policy currently only invokes
MicrotasksCompletedCallbacks when the microtask queue is non-empty,
while all other policies unconditionally invokes the callbacks. Make the
auto mode also unconditionally invoke the callbacks.
Bug: v8:10213
Change-Id: I2f608459960b84e6f506646712ac935130646b9e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2057813
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66320}
Port 820faa6e70
Original Commit Message:
The arm/arm64 simulators debugger has a command "mem" that prints
the content of the memory. It also prints a short summary for JS
objects (SMI, Array, JSFunction, ...). That is very handy, but
when trying to print incomplete initialized memory, it could raise
an exception.
It is useful to have a command that prints the content of the memory
for non-initialized or bogus values without the risk of raising
an exception. This CL adds the command "dump".
R=victorgomes@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N
Change-Id: Ie3931af0cf34052706618774ba95bf0057cfcabf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2062159
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#66308}
The arm/arm64 simulators debugger has a command "mem" that prints
the content of the memory. It also prints a short summary for JS
objects (SMI, Array, JSFunction, ...). That is very handy, but
when trying to print incomplete initialized memory, it could raise
an exception.
It is useful to have a command that prints the content of the memory
for non-initialized or bogus values without the risk of raising
an exception. This CL adds the command "dump".
Change-Id: I682f97afa30a8d9dc572fe5e9dd256eeebf79de9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2056468
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66284}
This is a reland of 137bfe47c9
Original change's description:
> [arm64] Protect return addresses stored on stack
>
> This change uses the Arm v8.3 pointer authentication instructions in
> order to protect return addresses stored on the stack. The generated
> code signs the return address before storing on the stack and
> authenticates it after loading it. This also changes the stack frame
> iterator in order to authenticate stored return addresses and re-sign
> them when needed, as well as the deoptimizer in order to sign saved
> return addresses when creating new frames. This offers a level of
> protection against ROP attacks.
>
> This functionality is enabled with the v8_control_flow_integrity flag
> that this CL introduces.
>
> The code size effect of this change is small for Octane (up to 2% in
> some cases but mostly much lower) and negligible for larger benchmarks,
> however code size measurements are rather noisy. The performance impact
> on current cores (where the instructions are NOPs) is single digit,
> around 1-2% for ARES-6 and Octane, and tends to be smaller for big
> cores than for little cores.
>
> Bug: v8:10026
> Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782
> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66239}
Bug: v8:10026
Change-Id: Id1adfa2e6c713f6977d69aa467986e48fe67b3c2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051958
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
Cr-Commit-Position: refs/heads/master@{#66254}
This reverts commit 137bfe47c9.
Reason for revert: https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/13072
Original change's description:
> [arm64] Protect return addresses stored on stack
>
> This change uses the Arm v8.3 pointer authentication instructions in
> order to protect return addresses stored on the stack. The generated
> code signs the return address before storing on the stack and
> authenticates it after loading it. This also changes the stack frame
> iterator in order to authenticate stored return addresses and re-sign
> them when needed, as well as the deoptimizer in order to sign saved
> return addresses when creating new frames. This offers a level of
> protection against ROP attacks.
>
> This functionality is enabled with the v8_control_flow_integrity flag
> that this CL introduces.
>
> The code size effect of this change is small for Octane (up to 2% in
> some cases but mostly much lower) and negligible for larger benchmarks,
> however code size measurements are rather noisy. The performance impact
> on current cores (where the instructions are NOPs) is single digit,
> around 1-2% for ARES-6 and Octane, and tends to be smaller for big
> cores than for little cores.
>
> Bug: v8:10026
> Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782
> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66239}
TBR=rmcilroy@chromium.org,mstarzinger@chromium.org,neis@chromium.org,georgia.kouveli@arm.com
Change-Id: I57d5928949b0d403774550b9bf7dc0b08ce4e703
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10026
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051952
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66242}
This change uses the Arm v8.3 pointer authentication instructions in
order to protect return addresses stored on the stack. The generated
code signs the return address before storing on the stack and
authenticates it after loading it. This also changes the stack frame
iterator in order to authenticate stored return addresses and re-sign
them when needed, as well as the deoptimizer in order to sign saved
return addresses when creating new frames. This offers a level of
protection against ROP attacks.
This functionality is enabled with the v8_control_flow_integrity flag
that this CL introduces.
The code size effect of this change is small for Octane (up to 2% in
some cases but mostly much lower) and negligible for larger benchmarks,
however code size measurements are rather noisy. The performance impact
on current cores (where the instructions are NOPs) is single digit,
around 1-2% for ARES-6 and Octane, and tends to be smaller for big
cores than for little cores.
Bug: v8:10026
Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782
Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66239}
Adds support for off-thread allocation to Script allocation and
line-end calculation.
This includes adding support for keeping/merging a script list on
the OffThreadIsolate, and adding syntactical support for logging
(in the future this could do actual logging).
Bug: chromium:1011762
Change-Id: Id90f2ad7458e90e06f6926f1fce7ef7a1ef50b3d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2046884
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66213}
Deprecate the following explicit FinalizationGroup APIs in favor of
automatic handling of FinalizationGroup cleanup callbacks:
- v8::Isolate::SetHostCleanupFinalizationGroupCallback
- v8::FinaliationGroup::Cleanup
If no HostCleanupFinalizationGroupCallback is set, then
FinalizationGroup cleanup callbacks are automatically scheduled by V8
itself as non-nestable foreground tasks.
When a Context being disposed, all FinalizationGroups that are
associated with it are removed from the dirty list, cancelling
scheduled cleanup.
This is a reland of 31d8ff7ac5
Bug: v8:8179, v8:10190
Change-Id: I704ecf48aeebac1dc2c05ea1c052f6a2560ae332
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2045723
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66208}
FunctionEntry StackChecks is one of the two cases where we generate a
StackCheck bytecode. In these cases, we do stack check against the js
limit (not to be confused with the real js limit). Their purpose is to
be able to interrupt the running code.
We can omit the FunctionEntry StackCheck by embedding its code into
the InterpreterEntryTrampoline builtin. We save one bytecode per
interpreted function.
This change has rippling effects for optimized code, as well as the
deoptimizer.
Bug: v8:10149, v8:9977, v8:9960
Change-Id: I6156de48b3bc0b519dd21190a8e6214fbe96c78d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1914218
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66206}
Make sure we can't get the Isolate for writable off-thread space
objects, to avoid leaking the Isolate into off-thread compilation.
Bug: chromium:1011762
Change-Id: I5c4316e751736b8c8235fdcc8949d52b78313f38
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2043791
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66194}
The logic for V8 GC normally only takes the external memory growth
since last mark-compact into account. Unfortunately, the amount of
external memory recorded at the end of MC is often too high. The
reason is that it might take a while for the external memory
associated with the GCed objects to be released (e.g. V8 itself post a
task to release external memory for ArrayBuffer backing stores). In a
worst case scenario GC is driven only by external memory and none of
the external memory is released by the end of the MC. Then each MC
will record the external memory at its highest point and the GC logic
will allow the external memory to grow a bit higher each time which
can lead to excessive memory use.
This patch improves the situation a bit by calculating the growth from
the lowest external memory seen since the last MC. That way the growth
calculation will be offset from a level presumably closer to the
intended one (to what it would have been if the external memory
associated with the GCed objects was released during the MC). Now,
this fix is not perfect because it can be thrown off by external
memory growth occurring before the lingering memory is
released. However, it seems to work rather well in practice (e.g. when
playing MSE video on YT).
Bug: v8:10185
Change-Id: Ifcdd87eb45f3ae4a99d2aeec667c3ae4ca9a52b6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2042711
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66193}
> It isn't expensive to set this enum on the isolate and we only call
> this in chrome when the ThreadDebugger is enabled anyway.
>
> This means we have a correct idle state to use with the upcoming
> CDP event which emits the thread state.
This time, move the dcheck below the stack pointer check. It turns out
we call into this with current state == JS, but only when js is on the
stack, so we can just move the check lower.
Bug: chromium:1025490
Change-Id: Ic9b2eff1ae1880535d0c6da5487ebea4f7e5e62b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2039050
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66192}
This reverts commit 31d8ff7ac5.
Reason for revert: https://crbug.com/v8/10190
Original change's description:
> [weakrefs] Schedule FinalizationGroup cleanup tasks from within V8
>
> Deprecate the following explicit FinalizationGroup APIs in favor of
> automatic handling of FinalizationGroup cleanup callbacks:
> - v8::Isolate::SetHostCleanupFinalizationGroupCallback
> - v8::FinaliationGroup::Cleanup
>
> If no HostCleanupFinalizationGroupCallback is set, then
> FinalizationGroup cleanup callbacks are automatically scheduled by V8
> itself as non-nestable foreground tasks.
>
> When a Context being disposed, all FinalizationGroups that are
> associated with it are removed from the dirty list, cancelling
> scheduled cleanup.
>
> Bug: v8:8179
> Change-Id: Ic09313a11dd00af36d1f698250b3d735155f45e8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1986392
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66184}
TBR=ulan@chromium.org,rmcilroy@chromium.org,syg@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:8179
Change-Id: If7869e9a5841803c10e748691f019a7d28f3b62e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2043807
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66190}
Deprecate the following explicit FinalizationGroup APIs in favor of
automatic handling of FinalizationGroup cleanup callbacks:
- v8::Isolate::SetHostCleanupFinalizationGroupCallback
- v8::FinaliationGroup::Cleanup
If no HostCleanupFinalizationGroupCallback is set, then
FinalizationGroup cleanup callbacks are automatically scheduled by V8
itself as non-nestable foreground tasks.
When a Context being disposed, all FinalizationGroups that are
associated with it are removed from the dirty list, cancelling
scheduled cleanup.
Bug: v8:8179
Change-Id: Ic09313a11dd00af36d1f698250b3d735155f45e8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1986392
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66184}
Add off-thread support for literals, including object/array boilerplates.
Notably, this includes adding FixedArray and HeapNumber support to
OffThreadFactory.
As a drive-by, OffThreadHandle is redefined to store an Address rather
than an Object, similar to Handle, so that it still works with forward
definitions of types.
Bug: chromium:1011762
Change-Id: I7c8452f450d8c57fe683a9e44532ce5647c84a11
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2036084
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66156}
This reverts commit cf1fad5899.
Reason for revert: Breaks web tests: https://ci.chromium.org/p/v8/builders/ci/V8%20Blink%20Linux%20Debug/2684
Original change's description:
> [tooling] Keep track of idle state even when we aren't profiling
>
> It isn't expensive to set this enum on the isolate and we only call
> this in chrome when the ThreadDebugger is enabled anyway.
>
> This means we have a correct idle state to use with the upcoming
> CDP event which emits the thread state.
>
> Bug: chromium:1025490
> Change-Id: Ia555ac8c401d0ad7c72d4cbc442be388ce166131
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2036087
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66125}
TBR=yangguo@chromium.org,petermarshall@chromium.org
Change-Id: I3823197974a2e683364f56819de6ea33dbb8b296
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1025490
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2037441
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66133}
The source position is set to the function call (console.log) not the
spread (..x), in the bytecode generator, as the spread operation is
done as part of the CallWithSpread bytecode.
The CallPrinter stops at the function call and doesn't look at the
arguments as well (in CallPrinter::VisitCall) to see if the error is
from an incorrect spread operation.
With this patch, we pass some state to the CallPrinter in the
CallWithSpread error case and check that in CallPrinter::VisitCall
before returning.
For the given source string:
```
x = undefined;
console.log(1, ...x);
```
Previously, the error was -
```
test.js:2: TypeError: console.log is not iterable (cannot read property Symbol(Symbol.iterator))
console.log(1, ...x);
^
TypeError: console.log is not iterable (cannot read property Symbol(Symbol.iterator))
at test.js:2:9
```
Now, the error is -
```
_test.js:2: TypeError: x is not iterable (cannot read property undefined)
console.log(1, ...x);
^
TypeError: x is not iterable (cannot read property undefined)
at _test.js:2:9
```
Bug: v8:10038
Change-Id: I199de9997f1d949c6f9b7b4f41d51f422b8b5131
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2037431
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66131}
It isn't expensive to set this enum on the isolate and we only call
this in chrome when the ThreadDebugger is enabled anyway.
This means we have a correct idle state to use with the upcoming
CDP event which emits the thread state.
Bug: chromium:1025490
Change-Id: Ia555ac8c401d0ad7c72d4cbc442be388ce166131
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2036087
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66125}
