This avoids having to check both flags in two places, and prevents
people from trying to enable WebAssembly in lite mode (which would
currently build, but you still would not get Wasm support).
The downside is that the default value shown by `gn args --list` now
sais `""` instead of `true`.
R=machenbach@chromium.org, rmcilroy@chromium.orgCC=ecmziegler@chromium.org
Bug: v8:11238
Cq-Include-Trybots: luci.v8.try:v8_linux64_no_wasm_compile_rel
Change-Id: Ib2fe6c32cbdeb89895265bb898abf7284c560cc3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2712783
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72957}
Currently if gn check is enabled (with v8/third_party ignored), there
are many errors due to headers being used without adding the proper
dependency in BUILD.gn (or because it's being used transitively without
a public_deps chain).
This makes the number of errors go from 2114 to 195.
Apart from adding dependencies, it also moves _v8_internal_Node_Print
from objects-printer.cc to node.cc so it can see the Node::Print method
which wouldn't otherwise be possible without a circular dependency. Also
removes the previously deleted compiler/graph-builder-tester.h file.
Bug: v8:7330
Change-Id: Icb34585fbef621588265cf4267cfc88ecbcf0a72
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2702331
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72908}
This CL introduces a test runner flag to detect if webassembly has been
disabled. Since all tests that require wasm are alrady skipped in
lite mode, we introduce a has_webassembly flag for the test runner which
checks for v8_enable_webassembly=true and v8_enable_lite_mode=false.
As a drive-by, we also do not set the V8_ENABLE_WEBASSEMBLY
preprocessor flag if lite mode is enabled.
The status files are updated by splitting wasm tests from the
"lite_mode" section and checking for "not has_webassembly" instead.
Note that the v8_enable_webassembly=false configuration is not tested
on any bot currently, but I will make sure that all tests keep passing
on further changes in this configuration.
R=machenbach@chromium.org
Bug: v8:11238
Cq-Include-Trybots: luci.v8.try:v8_linux64_no_wasm_compile_rel
Change-Id: I1841eb1f1633cb47e0c079f4a4a4d769ca3a9cbb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2710425
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72898}
This is a reland of
https://chromium-review.googlesource.com/c/v8/v8/+/2688058
This CL is part of a series that adds the C++ implementation of
SwissNameDictionary, a deterministic property backing store based on
Swiss Tables.
This CL adds the initialization code, factory functions and a
canonical SwissNameDictionary plus all helpers required for that.
Bug: v8:11388
Change-Id: I9cf66a3fa755288f7730f55abfb6e6cea82f6b03
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2703653
Commit-Queue: Frank Emrich <emrich@google.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72857}
This reverts commit f731e13f00.
Reason for revert: perf regressions, chromium:1179757
Original change's description:
> Remove 'length' field from ScopeInfo
>
> ScopeInfo has a vestigial 'length' field from when it used to be a
> FixedArray. This change removes that field, which saves some memory.
>
> More specifically:
>
> - Make ScopeInfo inherit from HeapObject, not FixedArrayBase which
> supplied the 'length' field.
> - Privatize the FixedArray-style functions that provide access to
> ScopeInfo fields by index, and move them from scope-info-inl.h to
> scope-info.cc. Those functions are still used pretty heavily during
> initialization (ScopeInfo::Create, etc.), but at least we can avoid
> presenting them to the rest of the world.
> - Change FactoryBase::NewScopeInfo to allocate the updated object shape.
> It maintains the existing behavior of filling the newly-allocated
> object with undefined, even though that's not a valid ScopeInfo and
> further initialization is required.
> - Move part of AccessorAssembler::ScriptContextTableLookup into a new
> Torque macro, because it used to rely on casting ScopeInfo to
> FixedArrayBase.
> - In V8HeapExplorer::AddEntry, don't claim that ScopeInfo objects are
> arrays. I think it makes more sense to list them under "(system)" in
> the dev tools, like most other V8 internal types.
>
> Bug: v8:8952
> Change-Id: I8278e3a90027d4409f0d268da0fe7080754c6b8c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2601880
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Reviewed-by: Mythri Alle <mythria@chromium.org>
> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#72830}
Bug: v8:8952
Change-Id: I00a69da79e5ac6aaae4436a41ce773ae014cc775
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2706086
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Seth Brenith <seth.brenith@microsoft.com>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72855}
ScopeInfo has a vestigial 'length' field from when it used to be a
FixedArray. This change removes that field, which saves some memory.
More specifically:
- Make ScopeInfo inherit from HeapObject, not FixedArrayBase which
supplied the 'length' field.
- Privatize the FixedArray-style functions that provide access to
ScopeInfo fields by index, and move them from scope-info-inl.h to
scope-info.cc. Those functions are still used pretty heavily during
initialization (ScopeInfo::Create, etc.), but at least we can avoid
presenting them to the rest of the world.
- Change FactoryBase::NewScopeInfo to allocate the updated object shape.
It maintains the existing behavior of filling the newly-allocated
object with undefined, even though that's not a valid ScopeInfo and
further initialization is required.
- Move part of AccessorAssembler::ScriptContextTableLookup into a new
Torque macro, because it used to rely on casting ScopeInfo to
FixedArrayBase.
- In V8HeapExplorer::AddEntry, don't claim that ScopeInfo objects are
arrays. I think it makes more sense to list them under "(system)" in
the dev tools, like most other V8 internal types.
Bug: v8:8952
Change-Id: I8278e3a90027d4409f0d268da0fe7080754c6b8c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2601880
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72830}
This reverts commit 2f8a7561cb.
Reason for revert: Speculative revert, lots of segfaults on Arm:
https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/17781
Original change's description:
> [dict-proto] C++ implementation of SwissNameDictionary, pt. 3
>
> This CL is part of a series that adds the C++ implementation of
> SwissNameDictionary, a deterministic property backing store based on
> Swiss Tables.
>
> This CL adds the initialization code, factory functions and a
> canonical SwissNameDictionary plus all helpers required for that.
>
> Bug: v8:11388
> Change-Id: I6bb92740afefc7d05433cfa62023e6da5e8213c7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2688058
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Frank Emrich <emrich@google.com>
> Cr-Commit-Position: refs/heads/master@{#72824}
Bug: v8:11388
Change-Id: Ia5dae584b0fb452b12c5d64ee63ffa418c83f91b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2698758
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72829}
This CL is part of a series that adds the C++ implementation of
SwissNameDictionary, a deterministic property backing store based on
Swiss Tables.
This CL adds the initialization code, factory functions and a
canonical SwissNameDictionary plus all helpers required for that.
Bug: v8:11388
Change-Id: I6bb92740afefc7d05433cfa62023e6da5e8213c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2688058
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Frank Emrich <emrich@google.com>
Cr-Commit-Position: refs/heads/master@{#72824}
As of https://crrev.com/c/2629465, Simd tests cannot pass on
architectures without Simd support. Tests will need to be re-enabled
once Simd support is fully implemented on PPC.
Change-Id: I963639f1afa0c0ca7be3ca4b2fc06e874235b903
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2693056
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72788}
As outlined in the design document linked below, we're removing the
support for the non-standard Function.displayName property for the
purpose of Error.stack and DevTools Inspector stack traces. The
motivation here is that the negative lookup is costly, and we have
Function.name as a standard alternative (configurable since ES6 for
exactly this reason).
I dediced to go with JSFunction::GetDebugName(), since
JSFunction::GetName() was confusing in that it'd only get the "name"
property's value if it's a data property, but not with accessors.
JSFunction::GetDebugName() makes it clear that this is really a debug
helper function and might not give you the "name" property value.
Doc: https://bit.ly/devtools-function-displayName-removal
Bug: v8:8742, chromium:1177685, chromium:1077657, chromium:17356
Change-Id: I7717585cbace626174b2f2ed2a4f68f75429eca1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692189
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72715}
Add a .status file variable for the "v8_control_flow_integrity" gn arg,
and disable baseline tests for now in that configuration.
No-Tree-Checks: true
No-Try: true
Bug: v8:11439
Change-Id: I7274a168893cfd6619ce98fdd14a692217fd56c9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692206
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72698}
This reverts commit 87df0b7ecc (thus
relands 42cd9eb78d), with fixes for
the discovered issues.
Original change's description:
> Revert "[compiler] Directly read PropertyCells"
>
> This reverts commit 42cd9eb78d.
>
> Reason for revert: Clusterfuzz issues, e.g.
> https://bugs.chromium.org/p/chromium/issues/detail?id=1176318
>
> Original change's description:
> > [compiler] Directly read PropertyCells
> >
> > Main changes:
> >
> > - Introduce a new broker data kind kBackgroundSerialized for objects
> > that can be serialized in the background (when direct reads are on).
> > (I'm planning to remove kPossiblyBackgroundSerialized in a followup,
> > in favor of a dynamic choice of kSerialized or kBackgroundSerialized).
> > - Make PropertyCell use that new kind.
> > - Introduce a bottleneck in runtime code for changes to PropertyCells
> > and make sure that a certain protocol is followed that allows
> > concurrent reads from the background thread.
> > - Improve interface of PropertyCell in various ways.
> >
> > Bug: v8:7790
> > Change-Id: If3d7926c3b894808811348b4b2bed153f5c06897
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661462
> > Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> > Commit-Queue: Georg Neis <neis@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#72586}
>
> TBR=ulan@chromium.org,neis@chromium.org,verwaest@chromium.org,nicohartmann@chromium.org
>
> Change-Id: Id04145760c49fa379bc5a3fc16eba664025a9180
> Bug: v8:7790
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685125
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72619}
Bug: v8:7790, chromium:1176509, chromium:1176318, chromium:1176504
Change-Id: Icaf285912bb948432a4a2d599cd174f6a5aa296e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685166
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72697}
Currently we sometimes refer to baseline code or the baseline compiler
by its codename (Sparkplug). The codename is fun, but we should be
consistent and call things by one name or the other. Following the
pattern of Ignition stuff being called "interpreter", we call Sparkplug
"baseline", and leave the codename only in flags and variants.
Bug: v8:11420
Change-Id: I432e5629518be7c7ad38b6acff024c91d4cfd6d3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692186
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72696}
Following up on https://crrev.com/c/2689185, this CL significantly
simplifies the whole implementation of the stack trace capturing.
Before this CL, capturing any stack trace (for the purpose of the API or
Error.stack) would roughly work like this:
1. The CaptureStackTrace() function uses the StackFrameIterator to
walk the system stack. For each native frame it uses the
FrameSummary abstraction to get all (including potentially inlined)
frames. For each of those it appends a record consisting of six
elements to a FrameArray (this holds pointers to the actual
closures and receivers).
2. Afterwards the FrameArray is shrinked to the required size, and a
new FixedArray is allocated, and initialized with new
StackTraceFrame objects where each holds a reference to the
FrameArray, the index of the frame, and an initially uninitialized
StackFrameInfo reference. This new FixedArray is then returned from
CaptureStackTrace() and either stored on a message object or
provided to the API as v8::StackTrace.
The new approach removes a lot of the machinery in between and directly
creates a FixedArray of StackFrameInfo objects in CaptureStackTrace().
These StackFrameInfo objects are directly exposed as v8::StackFrame on
the public API, and they hold the six fields that were previously stored
flat in the FrameArray. This not only avoids a lot of copying around of
data and creation of temporary objects and handles, but most importantly
unifies and simplifies the stack frame function inside StackFrameInfo,
so you no longer need to wonder which function / object might be
responsible for a certain API.
There's still a lot of room for improvement. In particular we currently
don't cache the source position for a given StackFrameInfo (or
globally), but rather recompute it every time. This is still very fast,
significantly faster than the previous approach.
There are some notable (potentially user visible) changes:
- The CallSite#GetPosition() method now consistently returns the
Wasm module relative bytecode offset for all Wasm frames (previously
it'd return the function relative bytecode offset for non-asm.js
Wasm frames).
- The column and line numbers returned from StackFrameInfo methods are
consistently 1-based now, instead of sometimes being 0-based (Wasm)
and sometimes being 1-based (JS and asm.js Wasm). The only
potentially noticable difference is that for
CallSite#GetLineNumber() no longer returns 0 for Wasm frames, but
that was wrong and useless anyways.
- CallSite#GetThis() would sometimes return the_hole, another bug
flushed out by this CL.
The CL also contains some other not noteworthy drive-by-cleanups.
Fixed: chromium:1057211
Bug: chromium:1077657, chromium:1069425, v8:8742
Bug: chromium:1127391, chromium:1098530, chromium:981541
Change-Id: Iff12f6838a4d99080db8dd96bccc14440affc5a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2689183
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72694}
Sparkplug is a new baseline, non-optimising second-tier compiler,
designed to fit in the compiler trade-off space between Ignition and
TurboProp/TurboFan.
Design doc:
https://docs.google.com/document/d/13c-xXmFOMcpUQNqo66XWQt3u46TsBjXrHrh4c045l-A/edit?usp=sharing
Bug: v8:11420
Change-Id: Ideb7270db3d6548eedd8337a3f596eb6f8fea6b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667514
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72686}
- Add a no-simd-sse flag to skip SIMD tests on bots with no
hardware support.
Change-Id: I4efdbb5ee39c2e10ea8776a1f1e536ac96823efe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2629465
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72682}
Reasons:
* We disabled it more than a year ago for all configs
* Not easy to re-enable
* Not compatible with pointer compression as-is
* Not compatible with concurrent TP/TF as-is
* No concrete plans to re-enable it
Also remove Map's layout_descriptor since it was only used for double
field unboxing.
Bug: v8:11422
Change-Id: I9260906eac199213b3210712e9903f1ecf1d7979
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2676637
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72671}
For a long time, V8 had two distinct ways to capture and store a stack
trace, one where we'd just collect and symbolize the information for the
v8::StackTrace API (script id, name, line and colum information mostly),
and one where V8 would also memorize the closures, receivers, and
optionally the parameters of the stack frame, which we use for
Error.stack and the non-standard CallSite APIs. Those two were often out
of sync and suffered from various different issues. Eventually they were
refactored into a single captureStackTrace() bottleneck that would
produce a FrameArray.
This CL is a logical continuation of the refactorings. It repairs a
regression where we'd compute the method name (as part of the
cached StackFrameInfo) even if we don't need them (as is the case for
the inspector and any other use of the v8::StackTrace API).
Everytime a method was invoked on StackTraceFrame, it'd call into
StackTraceFrame::GetInfo(), which would lazily setup the StackFrameInfo
like this:
1. Create a FrameArrayIterator and point it to the FrameArray at the
index stored in the StackTraceFrame.
2. Invoke FrameArrayIterator::Frame(), which copies the information
from the FrameArray into a temporary JSStackFrame, AsmJsStackFrame
or WasmStackFrame C++ object, and use the StackFrameBase virtual
methods to transfer all information to a newly created
StackFrameInfo object.
3. Kill the link to the FrameArray and put a link to the
StackFrameInfo object into the StackTraceFrame.
This caching turned out to be extremely costly, since beyond other
things, it'd always invoke JSStackFrame::GetMethodName(), which is
extremely costly (the execution time is linear in the number of
properties on the receiver and it's prototype chain). The cost was so
high that several work-arounds had been added, which would avoid
triggering the eager construction of the StackFrameInfo object (i.e.
https://crrev.com/c/2080663, https://crrev.com/c/2550504 or
https://crrev.com/c/2261736, but also https://crrev.com/c/1688927).
This CL removes the StackFrameInfo caching completely, since neither the
inspector nor Error.stack benefit from the caching at all. It's only the
first part in a series of refactorings that will significantly reduce
the complexity and overhead of the stack trace collection.
Doc: https://bit.ly/2wkbuIy
Bug: chromium:1057211, chromium:1077657, chromium:1069425, v8:8742
Bug: chromium:1127391, chromium:1098530, chromium:981541
Change-Id: I8edb8ff48b620eb3043ae51ab4ea27146ef0a5a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2689185
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72647}
This reverts commit 42cd9eb78d.
Reason for revert: Clusterfuzz issues, e.g.
https://bugs.chromium.org/p/chromium/issues/detail?id=1176318
Original change's description:
> [compiler] Directly read PropertyCells
>
> Main changes:
>
> - Introduce a new broker data kind kBackgroundSerialized for objects
> that can be serialized in the background (when direct reads are on).
> (I'm planning to remove kPossiblyBackgroundSerialized in a followup,
> in favor of a dynamic choice of kSerialized or kBackgroundSerialized).
> - Make PropertyCell use that new kind.
> - Introduce a bottleneck in runtime code for changes to PropertyCells
> and make sure that a certain protocol is followed that allows
> concurrent reads from the background thread.
> - Improve interface of PropertyCell in various ways.
>
> Bug: v8:7790
> Change-Id: If3d7926c3b894808811348b4b2bed153f5c06897
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661462
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72586}
TBR=ulan@chromium.org,neis@chromium.org,verwaest@chromium.org,nicohartmann@chromium.org
Change-Id: Id04145760c49fa379bc5a3fc16eba664025a9180
Bug: v8:7790
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685125
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72619}
This very large changeset adds support for RISC-V.
Bug: v8:10991
Change-Id: Ic997c94cc12bba6881bc208e66526f423dd0679c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2571344
Commit-Queue: Brice Dobry <brice.dobry@futurewei.com>
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72598}
Main changes:
- Introduce a new broker data kind kBackgroundSerialized for objects
that can be serialized in the background (when direct reads are on).
(I'm planning to remove kPossiblyBackgroundSerialized in a followup,
in favor of a dynamic choice of kSerialized or kBackgroundSerialized).
- Make PropertyCell use that new kind.
- Introduce a bottleneck in runtime code for changes to PropertyCells
and make sure that a certain protocol is followed that allows
concurrent reads from the background thread.
- Improve interface of PropertyCell in various ways.
Bug: v8:7790
Change-Id: If3d7926c3b894808811348b4b2bed153f5c06897
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661462
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72586}
This CL is part of a series that adds the C++ implementation of
SwissNameDictionary, a deterministic property backing store based on
Swiss Tables.
This CL contains most of the boilerplate code for introducing a new
instance type.
Bug: v8:11388
Change-Id: Id263b8138a8ce4b465fb28d968223d2e1aaf05a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672030
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Frank Emrich <emrich@google.com>
Cr-Commit-Position: refs/heads/master@{#72582}
BREAKING CHANGE: The values of Wasm locals, stack, and globals are now
represented as objects instead of holding the (primitive) values
directly, and SIMD128 values are no longer represented as Uint8Arrays.
The DWARF extension has been prepared for this breaking change.
The new `WasmValue` comes with `type` and `value` properties that hold
its contents. The motivation here is that this is a more extensible
approach. In case of SIMD128, the `value` property holds the canonical
string representation, which has the additional advantage that these
values can be compared with `===` (and `==`).
This partially reverts https://crrev.com/c/2614428, the main difference
here being that WasmValue is now a proper JSObject that can be exposed
on the DebugEvaluate proxy API.
Screenshot: https://imgur.com/rcahNKM.png
Bug: chromium:1170282, chromium:1071432, chromium:1159402
Change-Id: Iea304e3680775123c41deb4c3d172ac949da1b98
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2643384
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72570}
CSV Support:
- Add import merged CSV from results.html
- Aggregate multiple runs and calculate stddev on them
Charts:
- Defer rendering charts for responsive UI
- Clean up chart rendering in general
- Sort charts based on raw chart data for speedups
- Show chart annotations
- Add chart total, displaying the total value for the currently
selected categories
- Fix sorting by chart total
- Add average row for all charts
Change-Id: I1e542f319172ecf158dcb44f8da7ad6e81aafe41
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2675934
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72562}
Update the wasm spec tests to include the memory64 proposal. Some tests
are failing currently because of broken spec tests or missing v8
support. This will be addressed in follow-up CLs.
R=ahaas@chromium.orgCC=zhin@chromium.org
Bug: v8:11401
Change-Id: I1a8f75e70f9d0828ad32c960c113f5e4c0d1a44b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2679683
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72561}
... and mark it as never-serialized wrt turbofan serialization.
Until this CL, the JSRegExp type was used as both for plain
user-visible regexp objects, and for internal regexp boilerplate
descriptions. Boilerplates are special: they are never exposed to the
user, they are only referenced from the feedback vector, they are
immutable.
To clarify this distinction, this CL introduces a dedicated struct
type RegExpBoilerplateDescription to hold the regexp boilerplate
description.
This makes Turbofan serialization simpler: boilerplates can be
accessed through direct reads since they are immutable. TF has no
special requirements on JSRegExp objects (it never reads into these
objects) and thus serializing only the references as a JSObjectRef is
fine.
Bug: v8:7790
Change-Id: I33b337fcfcf861a02bc6be6d0c6311d07cf05718
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2656257
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72522}
Extract out the command processing from Simulator::Debug(), and expose
it to gdb as a new 'sim' command. Example usage:
(gdb) sim p x15
(gdb) sim stack
The sim command will execute that one command, and will return to gdb.
For a list of all commands, you can call
(gdb) sim help
Note that sim won't resume simulator execution until gdb continues
execution; for example, `sim next` will set a breakpoint on the next
instruction, and will return to gdb. The user then has to continue
execution in gdb, at which point the simulator will break. The user can
then re-enter gdb with the gdb command. This will look like this:
(gdb) sim next
(gdb) continue
...
sim> gdb
(gdb) ...
Change-Id: I678e71e2642d8427950b5f7ed65890ceae69e18d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664448
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72479}
The flags are enabled by default and have stable coverage.
This also removes the corresponding bots.
Bug: v8:10315
Change-Id: Icce01383050dff758b6554db8e0c3589d6e5459c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2658324
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72457}
Fix 1: Track Scope::needs_home_object and Scope::uses_super_property
accurately. When "eval" is seen, figure out whether it can access
"super" and if yes, set the corresponding home object as needed.
Fix 2: The object literal scope shouldn't be entered for things
inside spreads.
Original: https://chromium-review.googlesource.com/c/v8/v8/+/2563275
Previous reland: https://chromium-review.googlesource.com/c/v8/v8/+/2637220
This saves memory (the home object doesn't need to be stored for each
method, but only once per class) and hopefully makes the home object
a constant in the optimized code.
Detailed documentation of the changes:
https://docs.google.com/document/d/1ZVXcoQdf9IdMsnRI9iyUjyq9NDoEyx9nA3XqMgwflMs/edit?usp=sharing
Bug: v8:9237
Bug: chromium:1167918
Bug: chromium:1167981
Bug: chromium:1167988
Bug: chromium:1168055
Bug: chromium:1171195
Bug: chromium:1171600
Change-Id: I9686e0d90cd0c1128757eca440a88748897ee91e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2655509
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72422}
They've started failed, and no work is planned for the foreseeable
future.
Bug: v8:8888
Change-Id: I89dfa8f972a5bffa2bbb09c7a6ca56a0c4da9a02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2656316
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72407}
ALmost all tools have migrated to .mjs modules.
Bug: v8:10667
Change-Id: I95f7c4a31a721be3000c990bdac1c4eb0779b693
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642460
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72404}
This adds a [[WebAssemblyMemory]] internal property to ArrayBuffer and
SharedArrayBuffer instances that are owned by WebAssembly.Memory
objects. This allows the devtools-frontend to find the
WebAssembly.Memory for any given ArrayBuffer, making it possible to
properly support WebAssembly.memory.grow() eventually, but also showing
a reasonable tab title.
Before: https://imgur.com/hod9jPR.png
After: https://imgur.com/v195VoC.png
Bug: chromium:1171621, chromium:1171619, chromium:1166577
Change-Id: Ife22cabdfcf54ab30c234ea4ca86bfbb711ab2f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653155
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72403}
This reverts commit f6450b97ec.
Reason for revert: ClusterFuzz bugs
Original change's description:
> Reland [super] Store home object in Context instead of JSFunction
>
> 1) Computed property keys (esp functions in them) shouldn't be inside
> the object literal scope.
>
> 2) I was using an imprecise "maybe uses super" and storing it to
> preparse data. This won't fly, since it pollutes sister scopes and
> leads to confusion wrt whether an object literal needs a home object
> or not. Made it precise (mostly cancelling changes in the original CL).
>
> 3) PreParser::NewSuperPropertyReference was creating a VariableProxy for
> this_function (which made it used) -> inconsistent scopes between
> parsing and preparsing.
>
> 4) MultipleEntryBlockContextScope was messing up the accumulator
>
> Original: https://chromium-review.googlesource.com/c/v8/v8/+/2563275
>
> This saves memory (the home object doesn't need to be stored for each
> method, but only once per class) and hopefully makes the home object
> a constant in the optimized code.
>
> Detailed documentation of the changes:
> https://docs.google.com/document/d/1ZVXcoQdf9IdMsnRI9iyUjyq9NDoEyx9nA3XqMgwflMs/edit?usp=sharing
>
> Bug: v8:9237, chromium:1167918, chromium:1167981, chromium:1167988, chromium:1168055
> Change-Id: I4f53f18cc18762c33e53d8c802909b42f1c33538
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637220
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72169}
TBR=marja@chromium.org,leszeks@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:9237
Bug: chromium:1167918
Bug: chromium:1167981
Bug: chromium:1167988
Bug: chromium:1168055
Bug: chromium:1171195
Bug: chromium:1171600
Change-Id: I15209f50c3fc8acf385a23f031ebb64139e2f519
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653158
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72391}
This is a reland of b77deeca4b
Changes compared to original: Add explicit narrowing casts in tests
for MSVC.
Original change's description:
> [wasm-gc] Remove abstract rtts
>
> In the latest wasm-gc spec, rtts of abstract types are no longer
> allowed. Consequently, canonical rtts of concrete types always have
> a depth of 0.
>
> Changes:
> - Change the immediate argument of rtts to a type index over a heap
> type. Abstract it with TypeIndexImmediate in function body decoding.
> This affects:
> value_type.h, read_value_type(), decoding of relevant opcodes,
> wasm subtyping, WasmInitExpr, consume_init_expr(), and
> wasm-module-builder.cc.
> - In function-body-decoder-impl.h, update rtt.canon to always produce
> an rtt of depth 0.
> - Pass a unit32_t type index over a HeapType to all rtt-related
> utilities.
> - Remove infrastructure for abstract-type rtts from the wasm compilers,
> setup-heap-internal.cc, roots.h, and module-instantiate.cc.
> - Remove ObjectReferenceKnowledge::rtt_is_i31. Remove related branches
> from ref.test, ref.cast and br_on_cast implementations in the wasm
> compilers.
> - Remove unused 'parent' field from WasmTypeInfo.
> - Make the parent argument optional in NewWasmTypeInfo, CreateStructMap,
> and CreateArrayMap.
> - Use more convenient arguments in IsHeapSubtypeOf.
> - Update tests.
>
> Bug: v8:7748
> Change-Id: Ib45efe0741e6558c9b291fc8b4a75ae303146bdc
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642248
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72321}
Bug: v8:7748
Change-Id: I22b204b486fd185077cd6c7f15d492f5143f48fe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2650207
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72355}
The contract between V8 and Blink is that embedder fields belong to
Blink, at least when the object has two or more of them. Now we had 2-3
embedder fields used by the debug proxies and that was confusing Blink,
since it expects the first slot to hold an aligned pointer in that case
and we had a HeapObject reference stored there.
This is a quickfix, which avoids internal fields completely for the
context extension proxy (using interceptors on the prototype instead)
and changes the named proxies to store the name table under a private
symbol instead of using a second internal field.
A proper but way more involved fix is to introduce a proper instance
type here and use space in the header instead of misusing embedder
fields.
Fixed: chromium:1170283
Bug: chromium:1159402
Change-Id: I6c4bbe2fe88fef29a6b9946708588245efbbe72b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2649033
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72323}
This reverts commit b77deeca4b.
Reason for revert: MSVC compile fails: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win64%20-%20msvc/16535/overview
Original change's description:
> [wasm-gc] Remove abstract rtts
>
> In the latest wasm-gc spec, rtts of abstract types are no longer
> allowed. Consequently, canonical rtts of concrete types always have
> a depth of 0.
>
> Changes:
> - Change the immediate argument of rtts to a type index over a heap
> type. Abstract it with TypeIndexImmediate in function body decoding.
> This affects:
> value_type.h, read_value_type(), decoding of relevant opcodes,
> wasm subtyping, WasmInitExpr, consume_init_expr(), and
> wasm-module-builder.cc.
> - In function-body-decoder-impl.h, update rtt.canon to always produce
> an rtt of depth 0.
> - Pass a unit32_t type index over a HeapType to all rtt-related
> utilities.
> - Remove infrastructure for abstract-type rtts from the wasm compilers,
> setup-heap-internal.cc, roots.h, and module-instantiate.cc.
> - Remove ObjectReferenceKnowledge::rtt_is_i31. Remove related branches
> from ref.test, ref.cast and br_on_cast implementations in the wasm
> compilers.
> - Remove unused 'parent' field from WasmTypeInfo.
> - Make the parent argument optional in NewWasmTypeInfo, CreateStructMap,
> and CreateArrayMap.
> - Use more convenient arguments in IsHeapSubtypeOf.
> - Update tests.
>
> Bug: v8:7748
> Change-Id: Ib45efe0741e6558c9b291fc8b4a75ae303146bdc
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642248
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72321}
TBR=ulan@chromium.org,jkummerow@chromium.org,manoskouk@chromium.org
Change-Id: I2f0d97f1a34f7c81c5a97d7c37925cb84c66eea3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7748
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2650206
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72322}
In the latest wasm-gc spec, rtts of abstract types are no longer
allowed. Consequently, canonical rtts of concrete types always have
a depth of 0.
Changes:
- Change the immediate argument of rtts to a type index over a heap
type. Abstract it with TypeIndexImmediate in function body decoding.
This affects:
value_type.h, read_value_type(), decoding of relevant opcodes,
wasm subtyping, WasmInitExpr, consume_init_expr(), and
wasm-module-builder.cc.
- In function-body-decoder-impl.h, update rtt.canon to always produce
an rtt of depth 0.
- Pass a unit32_t type index over a HeapType to all rtt-related
utilities.
- Remove infrastructure for abstract-type rtts from the wasm compilers,
setup-heap-internal.cc, roots.h, and module-instantiate.cc.
- Remove ObjectReferenceKnowledge::rtt_is_i31. Remove related branches
from ref.test, ref.cast and br_on_cast implementations in the wasm
compilers.
- Remove unused 'parent' field from WasmTypeInfo.
- Make the parent argument optional in NewWasmTypeInfo, CreateStructMap,
and CreateArrayMap.
- Use more convenient arguments in IsHeapSubtypeOf.
- Update tests.
Bug: v8:7748
Change-Id: Ib45efe0741e6558c9b291fc8b4a75ae303146bdc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642248
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72321}
This CL implements the upcoming spec change:
https://github.com/tc39/proposal-regexp-match-indices/pull/49
A new JSRegExpResultWithIndices subclass is introduced with a separate map and
an extra slot for storing the indices. If /d is passed, exec() constructs a
JSRegExpResultWithIndices and eagerly builds indices.
The existing re-execution logic is removed.
Bug: v8:9548
Change-Id: Ic11853e7521017af5e8bd583c7b82bb672821132
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2616873
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72306}
This ensures that large objects have alignment suitable for a fixed
double arrays.
Bug: chromium:1161759
Change-Id: I64fe88d641fedbb5e27c2b38c1b9a4e75cab535a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2639959
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72251}
While clang++ doesn't mind, g++ complains about apostrophes in #error
messages as they appear to be unterminated single-quoted literals. So
add surrounding double-quotes.
Bug: v8:11292
Change-Id: Ib263cb20c73650348599992186a0e7de11b1b306
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2639763
Auto-Submit: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72192}
This change adds Torque field definitions for ScopeInfo and begins to
use the Torque-generated accessors in some places. It does not change
the in-memory layout of ScopeInfo.
Torque compiler changes:
- Fix an issue where the parser created constexpr types for classes
based on the class name rather than the `generates` clause. This meant
that generated accessors referred to the imaginary type HashTable
rather than the real C++ type FixedArray.
- Don't pass Isolate* through the generated runtime functions that
implement Torque macros. Maybe we'll need it eventually, but we don't
right now and it complicates a lot of things.
- Don't emit `kSomeFieldOffset` if some_field has an unknown offset.
Instead, emit a member function `SomeFieldOffset()` which fetches the
slice for some_field and returns its offset.
- Emit an `AllocatedSize()` member function for classes which have
complex length expressions. It fetches the slice for the last field
and performs the multiply&add to compute the total object size.
- Emit field accessors for fields with complex length expressions, using
the new offset functions.
- Fix a few minor bugs where Torque can write uncompilable code.
With this change, most code still treats ScopeInfo like a FixedArray, so
I would like to follow up with some additional changes:
1. Generate a GC visitor for ScopeInfo and use it
2. Generate accessors for struct-typed fields (indexed or otherwise),
and use them
3. Get rid of the FixedArray-style get and set accessors; use
TaggedField::load and similar instead
4. Inherit from HeapObject rather than FixedArrayBase to remove the
unnecessary `length` field
After that, there will only be one ugly part left: initialization. I
think it's possible to generate a factory function that takes a bunch of
iterator parameters and returns a fully-formed, verifiably correct
ScopeInfo instance, but doing so is more complicated than the four
mostly-mechanical changes listed above.
Bug: v8:7793
Change-Id: I55fcfe9189e4d1613c68d49e378da5dc02597b36
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2357758
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72187}
Doing a function call into the logger to decide whether logging is
enabled or not is more costly than necessary.
This CL changes logging to take FLAG_log as main signal whether logging
could be active. If FLAG_log == false, logging cannot be active. In
that case we always call into the logger and perform detailed checks
there.
This CL changes flag-definitions to set FLAG_log if they need logging.
Change-Id: Ia51ed9fb7128451bf1dcf345fab257547aab4a47
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2602461
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72186}
1) Computed property keys (esp functions in them) shouldn't be inside
the object literal scope.
2) I was using an imprecise "maybe uses super" and storing it to
preparse data. This won't fly, since it pollutes sister scopes and
leads to confusion wrt whether an object literal needs a home object
or not. Made it precise (mostly cancelling changes in the original CL).
3) PreParser::NewSuperPropertyReference was creating a VariableProxy for
this_function (which made it used) -> inconsistent scopes between
parsing and preparsing.
4) MultipleEntryBlockContextScope was messing up the accumulator
Original: https://chromium-review.googlesource.com/c/v8/v8/+/2563275
This saves memory (the home object doesn't need to be stored for each
method, but only once per class) and hopefully makes the home object
a constant in the optimized code.
Detailed documentation of the changes:
https://docs.google.com/document/d/1ZVXcoQdf9IdMsnRI9iyUjyq9NDoEyx9nA3XqMgwflMs/edit?usp=sharing
Bug: v8:9237, chromium:1167918, chromium:1167981, chromium:1167988, chromium:1168055
Change-Id: I4f53f18cc18762c33e53d8c802909b42f1c33538
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637220
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72169}
Docs: https://docs.google.com/document/d/13n1qaB6A-gvgWc9NDhWm-UPuOqow_Y0DNgCeTbtIotI
Modify that C++ backend so that it can emit either runtime C++ or
postmortem debugging code. When in postmortem debugging mode, the
overall code structure would look similar with some difference:
1. Instead of passing an Isolate* everywhere, we pass a MemoryAccessor.
2. Instead of runtime class names like String, we use uintptr_t
3. When loading data from objects, instead of TaggedField<T>::load or
Object::ReadField (which read from the current process), we use the
MemoryAccessor and read data from the debuggee process.
4. Return values should be wrapped in the Value struct.
Implement the debug accessors for complex length expressions and add
test for such class (SmallOrderedHashSet).
Change-Id: I34107c92b31ed4e07bb628ae58c84487e41ba648
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2477921
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72148}
This will allow us optimize the protector cell checks in the fast path
from checking against the function object in every context to just
doing a range check against the instance type.
This patch adds new instance types for constructor functions that
require such protector cell checks.
Bug: v8:11256
Change-Id: Iea722f9c6326dfa470149dd02e689a23942097f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595442
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72146}
This reverts commit 4d5b878b61.
Reason for revert: Suspected to cause a failure on ChromeOS, which is blocking the roll - https://chromium-review.googlesource.com/c/chromium/src/+/2636263
Original change's description:
> [super] Store home object in Context instead of JSFunction
>
> This saves memory (the home object doesn't need to be stored for each
> method, but only once per class) and hopefully makes the home object
> a constant in the optimized code.
>
> Detailed documentation of the changes:
> https://docs.google.com/document/d/1ZVXcoQdf9IdMsnRI9iyUjyq9NDoEyx9nA3XqMgwflMs/edit?usp=sharing
>
> Bug: v8:9237
> Change-Id: Ia0925bdc8bfe54cbefcba6d10f64746d63a530c7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2563275
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72137}
TBR=marja@chromium.org,leszeks@chromium.org
Change-Id: Idc5a8240cef4da8893ccc608ee4ae0d7206a1ba8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9237
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637215
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72142}
Adds a v8-gn.h file containing defines that are used in the
externally-visible headers files like v8.h. This must be included by
include/v8config.h which includes it if the GN flag
v8_generate_external_defines_header is on. (Currently off by default).
To enable the v8config.h file to be included without the other v8
headers (as required by cppgc), this moves it into its own header set
which sets up the include path correctly.
Also updates some headers to ensure v8config.h is included before using
externally-visible defines.
Bug: v8:11292
Change-Id: I5be634f4adfbef144bf684071461d64f1cb30899
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2608212
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72140}
Removes:
- v8_disable_arguments_adaptor GN flag
- ArgumentsAdaptorTrampoline
- ArgumentsAdaptorFrame class
Change-Id: I382ebe6c25c3c172bee5df3e86e762fca10fa392
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2622911
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72133}
This reverts commit b3d09001eb.
Reason for revert: https://chromium-review.googlesource.com/c/v8/v8/+/2565511 has to be reverted, and this was a follow-up to that
Original change's description:
> [objects] Remove uncached internal external string type
>
> We shouldn't be creating those anymore since they are not thread-safe.
>
> Bug: v8:7790
> Change-Id: I4546d995fa32eb076c8dfe9d95301fad719c9e07
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615347
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72006}
TBR=rmcilroy@chromium.org,leszeks@chromium.org,solanes@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:7790
Change-Id: I4eb1a6b8446fa602eeb5bf29fbf1fe57182cdbf3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627605
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72122}
Make sure gcmole detects issue in DisallowGarbageCollection scopes.
DisallowGarbageCollection is widely used in the codebase to document
code that doesn't allocate. However, this has the rather unexpected
side-effect that gcmole is not run when such a scope is active.
This CL changes the default behavior of gcmole to run even with
DisallowGarbageCollection scopes present. This will give us the best
results of both worlds, dynamic checks by the fuzzer, and static
analysis by gcmole.
To allow crazy local raw pointer operations there is a new
DisableGCMole scope that explicitly disables gcmole.
Change-Id: I0a78fb3b4ceaad35be9bcf7293d917a41f90c91f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615419
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72039}
For simplicity this CL includes a first crude conversion of
tickprocessor.mjs. Later CLs will introduce more ES6 syntax and clean
up more code.
Bug: v8:10667
Change-Id: Ief2ca623f5562114fb976a95d156e2ab3f961114
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2611252
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72013}
We shouldn't be creating those anymore since they are not thread-safe.
Bug: v8:7790
Change-Id: I4546d995fa32eb076c8dfe9d95301fad719c9e07
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615347
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72006}
Change the background of source position markers based on the events
they link to.
Bug: v8:10644
Change-Id: I108d9f5670acdaf5835905c2b44648c0eaf6dbd0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2604708
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71970}
The IC object's interface is changing all the time and this code is
just bitrotting. Rather than trying to keep this updated all the time,
let's just use Object.values to print all the key value pairs in the
ic object.
This looks slightly worse than the previous text format but it has the
critical advantage of being broken less often.
Change-Id: Ia3580d1ba82a981d8442682f66d6002436e70f42
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2615418
Auto-Submit: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71969}
Previously we had introduced a special `v8::internal::WasmValue` type
which we used to expose Wasm values to the Scope view in Chromium
DevTools. The problem however is that these values cannot be exposed to
JavaScript (and in particular not to Debug Evaluate), which means that
particularly for v128 and i64 we have inconsistent representations
across the various parts of DevTools.
This change removes the `wasm` type from the RemoteObject and all the
adjacent logic, and paves the way for a uniform representation of Wasm
values throughout DevTools. For i64 we will simply use BigInt
consistently everywhere, and for i32, f32 and f64 we'll just use Number.
For externref we will represent the values as-is directly. For v128
values we currently use a Uint8Array, but will introduce a dedicated
WasmSimd128 class in a follow-up CL.
Bug: chromium:1071432
Fixed: chromium:1159402
Change-Id: I0671e5736c9c27d7ca376e23ed74f16d36e03c80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2614428
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71962}
Prepare the system analyzer to be able to select events related to a
a single code log entry.
- Rename source-panel to script-script panel
- Update main index.css to support selects in the panel selection
header
Bug: v8:10644
Change-Id: Ie8dd1839294687cb9e25995bcb7ef246a7d7f48d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2604707
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71948}
Design doc:
https://docs.google.com/document/d/1xkXj94iExFgLWc_OszTNyNGi523ARaKMWPZTeomhI4U
A lot has changed since the last patchset! I recommend revisiting this
design doc and reading the parts in green. I explain the roadmap for
what changes to expect from ETW instrumentation as well as the
instrumentation of this particular CL.
I'll do my best to answer any further questions anyone has about my
particular instrumentation or ETW in general :)
---
This is the first of a series of changelists to round out ETW
instrumentation for V8.
This changelist represents the most minimal change needed to instrument
ETW in V8. In particular, it:
- defines and registers the ETW provider,
- interacts minimally with the rest of V8, by hooking into the
existing TracingController::AddTraceEvent function,
- is designed with a platform-agnostic layer, so that event tracers
for other platforms can be instrumented in teh future.
Some notes on instrumentation (aka I copied stuff from the design doc):
We make heavy use of the TraceLogging API to log events. It differs from
previous methods of emitting ETW events in that it doesn<E2><80><99>t
require the overhead of a separate manifest file to keep track of
metadata; rather, events using this API are self-descriptive.
Here are the five major steps to instrument the TraceLogging API:
- Forward declare the provider (from provider-win.h)
- Define the provider in a .cc file (from provider-win.cc)
- Register the provider (called from v8.cc).
- Write events (called from libplatform/tracing-controller.cc)
- Unregister the provider (called from v8.cc)
At the base, we have an abstract provider class that encapsulates the
functionality of an event provider. These are things like registering
and unregistering the provider, and the actual event-logging.
The provider class is split into provider-win and provider-mac
(currently not instantiated) classes, with OS-dependent implementations
of the above functions.
In particular, the TraceLogging API is used only in provider-win. It is
here that we forward declare and define the provider, as well as write
ETW events.
Finally, there is a v8-provider class that serves as a top-level API and
is exposed to the rest of V8. It acts as a wrapper for the
platform-specific providers.
The .wprp file is needed so that Windows Performance Recorder knows how
to capture our events.
Some considerations:
- Is TracingController::AddTraceEvent the best place from which to
write my events?
- Is src/libplatform/tracing the best place to put my instrumentation?
- Right now, I fail the preupload because of this, which tells me my
files are probably not in the best location:
You added one or more #includes that violate checkdeps rules.
src\init\v8.cc Illegal include: "src/libplatform/tracing/v8-provider.h"
Because of "-src/libplatform" from src's include_rules.
Change-Id: Id53e4a034c9e526524a17000da0a647a95d93edf
Bug: v8:11043
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2233407
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Sara Tang <sartang@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#71918}
The negative implication from --single-threaded to --liftoff was
introduced because with --single-threaded, no tier-up to TurboFan is
possible, and TurboFan provides faster code and smaller code
This CL removes this implication. The reason is that this implication
does not only define the default compiler for --single-threaded to
TurboFan, and also completely disables the option to use Liftoff
instead. By removing the implication, and embedder who uses
--single-threaded can decide by themselves if they want to use Liftoff
by setting --liftoff, or if they don't want to use Liftoff by setting
--no-liftoff.
R=clemensb@chromium.org
Bug: v8:11279
Change-Id: Ie6e64a42823b87484135364ecb4589cfd188db5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2599548
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71917}
- Fix landing page
- Introduce and use SelectRelatedEvent for centralising the logic of
finding and showing related LogEntries. It also clears the selection
of all list panels if there are no related entries.
- Add "select related" button to the script-panel to show events only
from the currently selected script
- Add selection type tabs for the map-panel
- Fix transition colors for map-transitions view
- Introduce separate map-transition view for the currently selected Map
Bug: v8:10644
Change-Id: I4199a8332bab2518d98078712ed5ce9a8f1dc19e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2599555
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71849}
This allows the JSFunctionOrBoundFunction instance type range to no
longer be stuck at the last of the JSObject instance type range. This
will be useful in the future where we extend the function instance
types and include them in fast protector cell checks.
Bug: v8:11256
Change-Id: I955991576b3cca76b10f76c87748016fe527e3d0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2595275
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71826}
Concurrent inlining is enabled for TurboProp compiles, but we don't
enable the --concurrent-inlining flag so don't also set the implied
turbo_direct_heap_access flag. This CL fixes this.
BUG=v8:9684
Change-Id: I298febdf7c466385047f420d4c33ca0162778210
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593344
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71804}
Previously, we were looking up the prototype of the receiver and
checking that against %TypedArrayPrototype% before invalidating the
protector cell.
This is incorrect as it's possible to patch the prototype and then
change the constructor property, bypassing this check.
This CL adds a new instance type to prototype of all TypedArray
constructors and checks the receiver against this instance type.
TBR: tebbi@chromium.org
Bug: v8:11274, v8:11256
Change-Id: I2ff6280e4cf820b06c5593fe4addd36f7ac656c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2594776
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71799}
In the future, these instance types will be used for fast range checks
rather than the current slow individual map checks.
Bug: v8:11256
Change-Id: I4ad7d5259fbd46c3272a80996a5ac45a400d1f5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2590040
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71791}
Associate DeoptLogEntry with both, the function's source position and
the deopt location's source position.
Also fixes the list-panel click handler to support all clickable entry
types.
Bug: v8:10644, v8:10754
Change-Id: If10272a926d5dad10b29322e237610900715b9dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2584955
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71732}
This commit updates the gen-postmortem-metadaa.py script to
incorporate changes in V8 8.5. This removes the need to float a
patch to the script in Node.js.
Change-Id: I6532495bee906f51eb2b773ec38ff0a6e404dafe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2582705
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Cr-Commit-Position: refs/heads/master@{#71699}
