Some tests disabled dynamic tiering in order to actually serialize
TurboFan code. This makes the tests a bit simpler, but does not reflect
real-world usage.
This CL enables dynamic tiering in those tests and when needed executes
the code until tier-up was observed.
R=ahaas@chromium.org
Bug: v8:12899
Change-Id: I34cb8cedbc5908d9e6ca09d56c51609d0c8b2d6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3660262
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80849}
We introduce wasm types to Turbofan. They are represented by a new
subtype of {TypeBase}.
Types are attached to nodes during graph generation, as nodes are
assigned to wasm values. Therefore, phi nodes corresponding to merges
are not typed. Missing types will be computed, and assigned types will
be narrowed as much as possible, in a retyping phase that will be
introduced later.
Bug: v8:7748
Change-Id: I943559cf1d512edfab3bb2d22f8748c072cb1911
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3660248
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80778}
Bug: v8:12868
A slight modification to the existing DFA-based UTF-8 allocator to allow
decoding surrogates, for use in decoding WTF-8. We'll need to
additionally constrain the decoder to disallow surrogate pairs.
Change-Id: Ifddbf08d4eeeff8f270df52a68f01769ea790eec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3652787
Commit-Queue: Andy Wingo <wingo@igalia.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80654}
Triggering tier-up can happen very often, so the runtime function should
be as slim as possible.
This CL adds two DisallowGarbageCollection scopes and removes a
HandleScope which was unnecessarily created.
R=jkummerow@chromium.org
Bug: v8:12281
Change-Id: I43e7f2b449630856ac8dfb36d294fbd29191d0eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3652300
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80644}
If b is S128Zero, Shuffle(a,b,s) can be optimized to
Swizzle(a,s). By setting s[i] to 0x80, we can avoid access b.
If a is S128Zero, we can swap a and b first.
If one input of I8x16Shuffle is S128Zero, this patch can save
~60% instructions(7 of 12), and more than 30% improvement is
observed in local microbenchmarks.
Change-Id: I5953fa9064e01203cd4cf423c55dd5ed33cad57e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3544992
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Jie Pan <jie.pan@intel.com>
Cr-Commit-Position: refs/heads/main@{#80623}
Now that we require C++17 support, we can just use the standard
static_assert without message, instead of our STATIC_ASSERT macro.
R=leszeks@chromium.org
Bug: v8:12425
Change-Id: I1d4e39c310b533bcd3a4af33d027827e6c083afe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3647353
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80524}
Prototype the instruction on the interpreter, and Arm64. Details of
instruction lowerings on all relevant architectures can be found at:
https://github.com/WebAssembly/relaxed-simd/issues/40
Bug: v8:12284
Change-Id: Id4cb3889d94cf0bb7169ea068efe5ca68cfcbad9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3636365
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80475}
This prevents ambiguity errors in C++20 due to ADL when casting types in
std::, which gains std::bit_cast<>().
Bug: chromium:1284275
Change-Id: I25046d1952a9304852e481ad8b84049c6769c289
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3625838
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80378}
This is a reland of commit 9d31f8663a
There were issues with --future flag implications on M1.
Original change's description:
> [rwx][mac] Support fast W^X permission switching on Apple Silicon (M1)
>
> ... for V8 code space. The feature is currently disabled.
>
> In order to use fast W^X permission switching we must allocate
> executable pages with readable writable executable permissions (RWX).
> However, MacOS on ARM64 ("Apple M1"/Apple Silicon) prohibits further
> permission changing of RWX memory pages. This means that the code page
> headers must be allocated with RWX permissions too because otherwise
> it wouldn't be possible to allocate a large code page over the freed
> regular code page and vice versa.
>
> When enabled, the new machinery works as follows:
>
> 1) when memory region is reserved for allocating executable pages, the
> whole region is committed with RWX permissions and then decommitted,
> 2) since reconfiguration of RWX page permissions is not allowed on
> MacOS on ARM64 ("Apple M1"/Apple Silicon), there must be no attempts
> to change them,
> 3) the request to set RWX permissions in the executable page region
> just recommits the pages without changing permissions (see (1), they
> were already allocated as RWX and then discarded),
> 4) in order to make executable pages inaccessible one must use
> OS::DiscardSystemPages() instead of OS::DecommitPages() or
> setting permissions to kNoAccess because the latter two are not
> allowed by the MacOS (see (2)).
> 5) since code space page headers are allocated as RWX pages it's also
> necessary to switch between W^X modes when updating the data in the
> page headers (i.e. when marking, updating stats, wiring pages in
> lists, etc.). The new CodePageHeaderModificationScope class is used
> in the respective places. On unrelated configurations it's a no-op.
>
> The fast permission switching can't be used for V8 configuration with
> enabled pointer compression and disabled external code space because
> a) the pointer compression cage has to be reserved with MAP_JIT flag
> which is too expensive,
> b) in case of shared pointer compression cage if the code range will
> be deleted while the cage is still alive then attempt to configure
> permissions of pages that were previously set to RWX will fail.
>
> This also CL extends the unmapper unit tests with permissions tracking
> for discarded pages.
>
> Bug: v8:12797
> Change-Id: Idb28cbc481306477589eee9962d2e75167d87c61
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3579303
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80238}
Bug: v8:12797
Change-Id: I0fe86666f31bad37d7074e217555c95900d2afba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3610433
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80259}
This reverts commit 9d31f8663a.
Reason for revert: crashes on Mac/arm64 bots:
https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac%20-%20arm64%20-%20debug/5923/overview
Original change's description:
> [rwx][mac] Support fast W^X permission switching on Apple Silicon (M1)
>
> ... for V8 code space. The feature is currently disabled.
>
> In order to use fast W^X permission switching we must allocate
> executable pages with readable writable executable permissions (RWX).
> However, MacOS on ARM64 ("Apple M1"/Apple Silicon) prohibits further
> permission changing of RWX memory pages. This means that the code page
> headers must be allocated with RWX permissions too because otherwise
> it wouldn't be possible to allocate a large code page over the freed
> regular code page and vice versa.
>
> When enabled, the new machinery works as follows:
>
> 1) when memory region is reserved for allocating executable pages, the
> whole region is committed with RWX permissions and then decommitted,
> 2) since reconfiguration of RWX page permissions is not allowed on
> MacOS on ARM64 ("Apple M1"/Apple Silicon), there must be no attempts
> to change them,
> 3) the request to set RWX permissions in the executable page region
> just recommits the pages without changing permissions (see (1), they
> were already allocated as RWX and then discarded),
> 4) in order to make executable pages inaccessible one must use
> OS::DiscardSystemPages() instead of OS::DecommitPages() or
> setting permissions to kNoAccess because the latter two are not
> allowed by the MacOS (see (2)).
> 5) since code space page headers are allocated as RWX pages it's also
> necessary to switch between W^X modes when updating the data in the
> page headers (i.e. when marking, updating stats, wiring pages in
> lists, etc.). The new CodePageHeaderModificationScope class is used
> in the respective places. On unrelated configurations it's a no-op.
>
> The fast permission switching can't be used for V8 configuration with
> enabled pointer compression and disabled external code space because
> a) the pointer compression cage has to be reserved with MAP_JIT flag
> which is too expensive,
> b) in case of shared pointer compression cage if the code range will
> be deleted while the cage is still alive then attempt to configure
> permissions of pages that were previously set to RWX will fail.
>
> This also CL extends the unmapper unit tests with permissions tracking
> for discarded pages.
>
> Bug: v8:12797
> Change-Id: Idb28cbc481306477589eee9962d2e75167d87c61
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3579303
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80238}
Bug: v8:12797
Change-Id: Ic07948e036db36326d464a2a901d052aa060a406
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3611665
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80239}
... for V8 code space. The feature is currently disabled.
In order to use fast W^X permission switching we must allocate
executable pages with readable writable executable permissions (RWX).
However, MacOS on ARM64 ("Apple M1"/Apple Silicon) prohibits further
permission changing of RWX memory pages. This means that the code page
headers must be allocated with RWX permissions too because otherwise
it wouldn't be possible to allocate a large code page over the freed
regular code page and vice versa.
When enabled, the new machinery works as follows:
1) when memory region is reserved for allocating executable pages, the
whole region is committed with RWX permissions and then decommitted,
2) since reconfiguration of RWX page permissions is not allowed on
MacOS on ARM64 ("Apple M1"/Apple Silicon), there must be no attempts
to change them,
3) the request to set RWX permissions in the executable page region
just recommits the pages without changing permissions (see (1), they
were already allocated as RWX and then discarded),
4) in order to make executable pages inaccessible one must use
OS::DiscardSystemPages() instead of OS::DecommitPages() or
setting permissions to kNoAccess because the latter two are not
allowed by the MacOS (see (2)).
5) since code space page headers are allocated as RWX pages it's also
necessary to switch between W^X modes when updating the data in the
page headers (i.e. when marking, updating stats, wiring pages in
lists, etc.). The new CodePageHeaderModificationScope class is used
in the respective places. On unrelated configurations it's a no-op.
The fast permission switching can't be used for V8 configuration with
enabled pointer compression and disabled external code space because
a) the pointer compression cage has to be reserved with MAP_JIT flag
which is too expensive,
b) in case of shared pointer compression cage if the code range will
be deleted while the cage is still alive then attempt to configure
permissions of pages that were previously set to RWX will fail.
This also CL extends the unmapper unit tests with permissions tracking
for discarded pages.
Bug: v8:12797
Change-Id: Idb28cbc481306477589eee9962d2e75167d87c61
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3579303
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80238}
This introduces an AssemblerBufferCache class which will (later) cache
the backing store of AssemblerBuffers. This is needed for PKU-protected
assembler buffers, which are expensive to allocate and deallocate.
For now, the AssemblerBufferCache does not do any caching, this will be
added in a follow-up CL.
R=thibaudm@chromium.org
Bug: v8:12809
Change-Id: I4a7ccff49c9930584a9fcda8899cfe38cfc61419
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3593136
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80145}
These were originally proposed as a part of the fixed-width SIMD
proposal, and were then migrated to the relaxed-simd proposal
which also deems these operations out of scope.
Github issue: https://github.com/WebAssembly/relaxed-simd/issues/4
Bug: v8:12284
Change-Id: I65ceb6dfd25c43cf49bd7ec5b5ecd6b32cc3516a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3595970
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80125}
{LiftoffOptions} already contains many (optional) parameters for Liftoff
compilation, but not all of them.
This CL moves the function index and the {for_debugging} field also into
that struct, to further reduce the number of parameters to
{ExecuteLiftoffCompilation} and to improve readability by having a
factory-like initialization of the {LiftoffOptions} struct.
That struct is now also passed down to the LiftoffCompiler directly
instead of unpacking the fields again.
R=thibaudm@chromium.org
Bug: v8:12809
Change-Id: I8824a1908f214cbf4c21f113934fef3ece1bf88b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3513894
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80032}
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/+/3160667
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/main@{#80015}
This is a reland of commit 4d8e1846a7
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/+/3591332
Reviewed-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 4d8e1846a7.
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}
... 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}
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/+/3585566
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79993}
This is a reland of commit 54e360d141.
The two WasmGC cctests which require SSE4.1 support in Liftoff are now
skipped, so we can keep disallowing any bailout (even for missing CPU
features) in --liftoff-only.
Original change's description:
> [wasm] --liftoff-only should disable --wasm-dynamic-tiering
>
> A Liftoff only configuration should never tier up to TurboFan, hence add
> a proper implication to disable dynamic tiering if --liftoff-only is
> set.
> Also, add a DCHECK to ensure we never accidentally compile with TurboFan
> if --liftoff-only is set.
>
> R=jkummerow@chromium.org
>
> Bug: v8:12281
> Change-Id: Ia9b81add503cc939f59fde3f4d3bb67252facf2c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3569741
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79779}
Bug: v8:12281
Change-Id: I334bd81f75c3ef6d31b6117da5ef59a33fb46ae2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3572043
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79813}
Remove cctest's ability to run multiple tests (which has long been
deprecated and mostly broken). We can then make platform & V8
initialisation be part of running the test's Run method.
In particular, this allows us to inject custom logic into the platform
initialisation, like setting up a platform wrapper. Add a
TEST_WITH_PLATFORM which exercises this by registering a platform
factory on the test, and wrapping the default platform using this
factory. This allows these tests to guarantee that the lifetime of the
platform is longer than the lifetime of the isolate.
As a result of this, we can also remove the complexity around draining
platform state in the TestPlatform (since it will now have a longer
lifetime than the Isolate using it), and as a drive-by clean up the
TestPlaform to use a CcTest-global "default platform" instead of trying
to scope over the "current" platform.
As another drive-by, change the linked-list of CcTests and the linear
search through it into an std::map of tests.
Change-Id: I610f6312fe042f29f45cc4dfba311e4184bc7759
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3569223
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79772}
Add an array of canonical rtts on the isolate. Each wasm instance
copies its rtts from there, based on the type index -> canonical index
mapping in the module.
Bug: v8:7748
Change-Id: I0958686c51ecab15a3215a0da3bee1ad6d543cb3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3548821
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79712}
This is a reland of commit e76ad5c6d9
Changes compared to original:
- Move invocation of LAZY_INSTANCE_INITIALIZER to a static global
variable, as some builds were failing with a function-level static.
- Drive-by: Improve documentation a bit.
Original change's description:
> [wasm-gc] Implement isorecursive canonicalization
>
> This implements isorecursive canonicalization for static types.
>
> Not implemented in this CL:
> - Runtime type canonicalization.
> - Cross-module signature canonicalization for purposes of call_indirect.
>
> Bug: v8:7748
> Change-Id: I6214f947444eea8d7b15a29b35c94c3d07ddb525
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3541925
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79665}
Bug: v8:7748
Change-Id: I493fba1906491762f7d8bae50108e3e4a743391d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3560480
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79692}
This implements isorecursive canonicalization for static types.
Not implemented in this CL:
- Runtime type canonicalization.
- Cross-module signature canonicalization for purposes of call_indirect.
Bug: v8:7748
Change-Id: I6214f947444eea8d7b15a29b35c94c3d07ddb525
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3541925
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79665}
This fixes a general race with stack-scoped `TestPlatform` which
may go out of scope while tasks on workers are still running.
Add a barrier for workers, implemented through tasks, to synchronize
destruction of `TestPlatform`.
While this fixes general races, such short-lived platforms still
break if tasks cache the global platform pointer.
Bug: v8:12635
Change-Id: Ifc6ecc29f0e2b7297ca52051eae9bd81013b60ce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3536651
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79587}
Prototype F32x4Relaxed(Min/Max) and F64x2Relaxed(Min/Max)
operations for ARM. F32x4 variants map directly to vmin/vmax
hardware instructions which are also used for F32x4(Min/Max)
operations. The F64x2 variants are mapped in this implementation
to Pmin/Pmax instructions as detailed in the github issue.
https://github.com/WebAssembly/relaxed-simd/issues/33
Bug: v8:12284
Change-Id: I5ea939385fa0ae97bbdf776fc0b763cabb1b293c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3501347
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79355}
With the previous change to using the mask as the first
input to the node, the lane select ARM codegen is equivalent
to V128Select. Also enable cctests to run on ARM.
Bug: v8:12284
Change-Id: I5572f4845307ff20cc2a0a58d3ccf162caa436b5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3500655
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79352}
According to the latest changes in wasm-gc, externref will be renamed
to anyref, and will be assigned as the top of the reference type
hierarchy. Since in the current wasm type system funcref is not a
subtype of anyref, subtyping is now dependent on whether wasm-gc is
enabled.
Bug: v8:7748
Change-Id: I0c0ae3dd5523e624d4490ca33d1fba4c2ae59393
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468345
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79322}
After https://crrev.com/c/3484317, passing {nullptr} to the
{CodeSpaceWriteScope} won't work any more. Since the tests do not have a
{NativeModule} to pass instead, make them use
{pthread_jit_write_protect_np} directly.
The jump-table assembler tests have dedicated threads for writing and
executing the code, so we just switch once per thread. The icache test
switches between writing and executing, so we use a little struct for
switching.
R=jkummerow@chromium.org, tebbi@chromium.org
Bug: v8:12644, v8:11974
Change-Id: I116f3ad75454f749cdc4635802a4617ff91548b2
Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3487995
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79290}
Previously, V8_OS_MACOSX was, somewhat confusingly, also used for iOS.
With this CL, V8_OS_DARWIN will be set on both macOS and iOS,
V8_OS_MACOS only on macOS, and V8_OS_IOS only on iOS.
This CL also renames V8_TARGET_OS_MACOSX to V8_TARGET_OS_MACOS and
renames platform-xnu.cc to platform-darwin.cc.
Change-Id: I4bcafc7c337586662114144f6c7ccf47d978da1f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468577
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79167}
We optimize trivial type checks in the function body decoder, i.e.,
ref.as_<type> and ref.is_<type> when invoked on a value that is
statically known to be of typeable as <type>.
Bug: v8:7748
Change-Id: Ieee608a965ba44c4cadd9c7171ed8bdc129fce8b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3447375
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79061}
Since inheritance depth of every type is known in the isorecursive
hybrid type system, rtts with depth are removed. This enables
simplification of type checks in Liftoff and Turbofan, as well as
decoding of object allocation instructions.
Bug: v8:7748
Change-Id: I6b52579b584191d92644de1c6e805d9f054641d3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3422626
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78860}
With dynamic tiering, the total amount of code generated for a
WebAssembly module decreases significantly. However, the amount of
code space we reserved for generated code has not been adjusted yet.
This CL adds a parameter for dynamic tiering to
EstimateNativeModuleCodeSize. If dynamic tiering is used, then the code
space reserved for TurboFan gets reduced to a quarter of the code space
without dynamic tiering.
Reserving a quarter of the space seems to be still quite generous. Even
Google Earth, seems to use a lot of its code, only needs less than 20%.
R=clemensb@chromium.org
Bug: chromium:1285334
Change-Id: I7dce0821b5e46d7240dfb1523031de84b1fe1348
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3420307
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78826}
This CL replaces the equirecursive type system for wasm-gc with the
isorecursive hybrid type system presented here:
https://github.com/WebAssembly/gc/issues/257.
In broad strokes, this includes the following changes:
- In the module decoder, remove equirecursive types. Implement recursive
type groups, subtype definitions, and function/struct/array
definitions. Treat nominal modules as syntactic sugar of an
isorecursive module, where all types belong in the same recursive
group.
- Remove rtt.sub and all related infrastructure.
- Change subtyping to work with explicit supertypes only.
- Add ValidSubtypeDefinition in subtyping, to check that subtype
declarations are valid during decoding.
- Remove the subtyping cache.
- Add support for functions to have specific signature index in
WasmModuleBuilder and in test-gc.cc.
- Adapt tests.
Current restrictions:
- Recursive groups are not stored beyond decoding.
- Type canonicalization is not implemented. No tests relying on types
being considered identical post-canonicalization.
- No cross-module subtyping is possible. Tests relying on cross-module
subtyping have been commented out.
Bug: v8:7748
Change-Id: I69fd04ecc5611f6230c95d5c89d1c520163fffae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3416239
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78816}
Changes:
- Introduce {TypeDefinition} for wasm modules.
- Introduce an enum {TypeDefinition::Kind} to represent the three
different definition types.
- Collapse the {types}, {type_kinds} and {supertypes} vectors into a
single vector of {TypeDefinition}s.
- Use {TypeDefinition} in WasmModuleBuilder.
- Drive-by: Remove {kNullIndex} in WasmModuleBuilder.
- Drive-by: Tidy-up wasm-module.h.
Change-Id: I97c2c268bcad745176243c693cf169bfa5714f94
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3416233
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78813}
Changes:
- Fix a bug in objects-printer where array elements were not treated as
tagged pointers.
- Fix a few TODOs, mainly in the wasm interpreter.
- Improve documentation, small refactorings.
Change-Id: I1d70ad454b3a0693b9b784b17395434d81d01b61
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3383136
Reviewed-by: Nikolaos Papaspyrou <nikolaos@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78656}
- Add suspend asm builtin stub, and call it from the suspending
wasm-to-js wrapper
- Rename frame type to match both builtins (prompt and suspend)
- Add suspend bool to the import cache key
R=ahaas@chromium.org
CC=fgm@chromium.org
Bug: v8:12191
Change-Id: Ie5a8ca7cbe4bcb91697e05b6470e3d632d608993
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3345004
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78628}
