This is to ensure the snapshot is deterministic.
R=mstarzinger@chromium.org
Bug: v8:4886, v8:3645
Change-Id: I79c8e54ba6b4810f005bc1ece61890790c815cea
Reviewed-on: https://chromium-review.googlesource.com/595740
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47082}
There's an inherent trade-off when deciding between ATOM and IRREGEXP
regexps: IRREGEXP is faster at runtime for all but trivial single-character
patterns, while ATOM regexps have a lower memory overhead.
This CL is intended to help investigate impact on benchmarks and real-world
code - if something tanks, it's easy to revert, otherwise it can be a first
step towards a possible removal of ATOM regexps.
Bug: v8:6633
Change-Id: Ia41d8eb28d33952735562d3d4127202746a6ac4e
Reviewed-on: https://chromium-review.googlesource.com/589435
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47081}
By representing "optimization disabled" with a kNoReason bailout reason,
we have enough spare bits to merge the bailout reason field into
compiler hints. This decreases SFI size by one word.
Change-Id: I0169c91dfbfa443128b060a83e483717ed31a166
Reviewed-on: https://chromium-review.googlesource.com/595980
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47080}
Consider:
function f() {
return;
}
This CL ensures that the closing brace is considered as covered by
introducing a special case for open-ended range rewrites when the
parent range is the function range itself.
Bug: v8:6000, v8:6661
Change-Id: I0be307759967e9f4df245a4f367326a37dda86fd
Reviewed-on: https://chromium-review.googlesource.com/597651
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47079}
This reverts commit d4a742fdf1.
Reason for revert: gc-stress failures
Original change's description:
> Reland "[heap] Add mechanism for tracking invalidated slots per memory chunk."
>
> This reverts commit c59b81d7b8.
>
> Original change's description:
> > [heap] Add mechanism for tracking invalidated slots per memory chunk.
>
> > For correct slots recording in concurrent marker, we need to resolve
> > the race that happens when
> > 1) the mutator is invalidating slots for double unboxing or string
> > conversions
> > 2) and the concurrent marker is recording these slots.
>
> > This patch adds a data-structure for tracking the invalidated objects.
> > Thus we can allow the concurrent marker to record slots without
> > worrying about clearing them. During old-to-old pointer updating phase
> > we re-check all slots that belong to the invalidated objects.
>
> BUG=chromium:694255
>
> Change-Id: Idf8927d162377a7bbdff34f81a87e52db27d6a9f
> Reviewed-on: https://chromium-review.googlesource.com/596868
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47068}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: I81c6059a092cc5834acd799c51fd30dc0ecf5b27
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:694255
Reviewed-on: https://chromium-review.googlesource.com/597787
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47078}
Some bailout reasons are never referenced. Removing these allows us to
decrease the size of bailout reason bit-fields to 7 bits.
Change-Id: Ib5e884d224c12313e06493ed05a18a22b3951665
Reviewed-on: https://chromium-review.googlesource.com/596128
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47077}
Use some less-known grep flags to avoid the for loop in
check-unused-bailouts.sh, speeding it up considerably.
Before:
$ time tools/check-unused-bailouts.sh >/dev/null
real 0m14.717s
user 0m6.968s
sys 0m7.128s
After:
$ time tools/check-unused-bailouts.sh >/dev/null
real 0m0.514s
user 0m0.480s
sys 0m0.028s
Change-Id: I2178e2adaf60282865cf18272246a77bcff9d140
Reviewed-on: https://chromium-review.googlesource.com/597690
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47076}
This fixes a corner case of rewriting the transition trees, where the
"interesting symbols" bit was not properly forwarded.
Drive-by-fix: Introduce additional checking in Map::ConnectTransition to
make it easier for clusterfuzz to detect cases we might have missed.
R=mstarzinger@chromium.org
Bug: chromium:751109
Change-Id: I3f1a1e6232db9b3694064b3d4e9f37255b018acc
Reviewed-on: https://chromium-review.googlesource.com/597669
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47075}
This CL adds a DCHECK to make the uses() function safer: we store what
the next pointer should be to comparing with the next use (from the
current element in the linked list). This helps detect code which
invalidates the use-list iterator, which would otherwise cause
hard-to-debug errors.
Bug:
Change-Id: I3875361809ffd55fb8be2cbb15af3250e3fd4c12
Reviewed-on: https://chromium-review.googlesource.com/596030
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Alexandre Talon <alexandret@google.com>
Cr-Commit-Position: refs/heads/master@{#47074}
Apparently it can happen that Blink calls Evaluate on a module that has
errored dependencies.
R=adamk@chromium.org
Bug: v8:1569, chromium:750024
Change-Id: I44b6dde2d5fe5ca25ca2b8c44ede2683d1be944d
Reviewed-on: https://chromium-review.googlesource.com/596055
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47071}
These tests perform GC manually which does not work well with concurrent
marking and stress incremental marking flags.
BUG=chromium:694255
Change-Id: I43e32957bf37053e0d3af07afa00b8bb40935ebd
Reviewed-on: https://chromium-review.googlesource.com/596887
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47070}
This reverts commit c59b81d7b8.
Original change's description:
> [heap] Add mechanism for tracking invalidated slots per memory chunk.
> For correct slots recording in concurrent marker, we need to resolve
> the race that happens when
> 1) the mutator is invalidating slots for double unboxing or string
> conversions
> 2) and the concurrent marker is recording these slots.
> This patch adds a data-structure for tracking the invalidated objects.
> Thus we can allow the concurrent marker to record slots without
> worrying about clearing them. During old-to-old pointer updating phase
> we re-check all slots that belong to the invalidated objects.
BUG=chromium:694255
Change-Id: Idf8927d162377a7bbdff34f81a87e52db27d6a9f
Reviewed-on: https://chromium-review.googlesource.com/596868
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47068}
This adds support to materialize objects when generating a frame summary
for an optimized frame via {OptimizedFrame::Summarize}. Note that this
means each summary might re-materialize objects and hence produce new
object identities every time. All use sites need to be able to cope with
such semantics.
R=jarin@chromium.org
BUG=v8:6586
Change-Id: I85c66ad3e7d247cd40f37a0a6e4391c0ee279706
Reviewed-on: https://chromium-review.googlesource.com/595745
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47067}
Replacing pc with trampoline on stack
This CL is the follow up of https://chromium-review.googlesource.com/c/586707/
which used to crash when running the gc-stress bots.
It seems to be working now. We now keep the trampoline PC in the Safepoint
table and use that information to find SafepointEntries.
There's some refactoring that can be done, such as changing the code for
exceptions in a similar way and removing the trampoline from the
DeoptimizationInputData. Will take care of this in the next CL.
Bug: v8:6563
Change-Id: I8c0a2489de19e6d5fb4ebf1de7da1933726265b4
Reviewed-on: https://chromium-review.googlesource.com/596027
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47066}
This is a partial reland of "Allow a minimum semi-space size of 512K."
with a heuristic to keep 1MB initial semi-space size for high
memory devices.
Original commit message:
> [heap] Allow a minimum semi-space size of 512K.
> This CL also reduces the minimum semi-space size to 512K.
> BUG=chromium:716032
BUG=chromium:735649,chromium:716032
Change-Id: I5ec851f2380c40dbc34b4576a668f63ae38ac898
Reviewed-on: https://chromium-review.googlesource.com/594387
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Hablich <hablich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47065}
Until now, when generating a builtin, it can only embed builtins
(as call targets) that have already been generated. This is either
achieved by reordering the builtins list, or by loading the call
target at runtime from the builtins list (see
MacroAssembler::TailCallBuiltin).
This patch works around this issue by filling the builtins list
with dummy code objects, which are later replaced with the completed
actual builtins. In release mode, this adds around 3ms to 140ms we
previously needed to populate the builtins list.
Change-Id: I7d451b3c09a1db4b9e755548102a80c7f0dfada2
Reviewed-on: https://chromium-review.googlesource.com/586531
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47062}
Node.js doesn't have good place to call contextDestroyed.
We need to cleanup everything on our side to allow clients to not call
contextDestroyed method.
R=dgozman@chromium.org,eostroukhov@chromium.com
Bug: none
Change-Id: Ibe3f01fd18afbfa579e5db66ab6f174d5fad7c82
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/575519
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#46849}
Reviewed-on: https://chromium-review.googlesource.com/596549
Cr-Commit-Position: refs/heads/master@{#47060}
This reverts commit eb65f35e96.
Reason for revert: Broke jetstream benchmark on android.
BUG=chromium:750828
Original change's description:
> [wasm] redirect wasm calls to js functions through a GCed table
>
> With this patch, rather than embedding the JSReceiver address directly
> in the WasmToJS wrappers, we put that in a fixed array with global handle
> scope and instead embed the location of the handle and the index in the
> wrapper. This ensures that the wrapper doesn't need to be patched if the
> GC kicks in. This is needed to get the WASM code off the GCed heap.
>
> R=mtrofin@chromium.org
>
> Bug:
> Change-Id: Ie5a77a78cdecec51b04f702c63b8e4285e6a2d8d
> Reviewed-on: https://chromium-review.googlesource.com/581682
> Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
> Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46884}
TBR=mtrofin@chromium.org,aseemgarg@google.com,aseemgarg@chromium.org,clemensh@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I26f49ee0a1fe73cc5d8852ded87b56638be39ebf
Reviewed-on: https://chromium-review.googlesource.com/596268
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47059}
Per https://github.com/tc39/proposal-async-iteration/pull/102/files:
AsyncGeneratorResolve no longer unwraps a value component. Instead, the value is
unwrapped before the builtin call via Await, allowing Promise rejections to
affect the generator control flow.
Thus, all `yield <expr>` implicitly become `yield await <expr>`.
Additionally, `return <expr>` becomes `return await <expr>`. Finally, when the
generator is resumed with `.return()`, the parameter passed to .return() is
awaited before generator execution properly continues).
BUG=v8:6187, v8:5855
R=littledan@chromium.org, neis@chromium.org, adamk@chromium.orgTBR=rmcilroy@chromium.org, neis@chromium.org
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Id7718028fd555481f9f4ca0dbecfa788e3057c48
Reviewed-on: https://chromium-review.googlesource.com/594500
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#47058}
Port 316254a710
Original Commit Message:
Commit 0d833cb94f deleted function call
that created CEntryStub code in snapshot. So when CEntryStub::GetCode is
called while initializing V8, the code for it, is not found in shapshot.
Hence this code has to be generated in new allocation on heap, that is
why initial heap is above the limit.
This patch assures that CEntryStub code is in the snapshot.
R=predrag.rudic@imgtec.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N
Change-Id: I976dacf885e0d4ce8c5446a2c560a00cc0792150
Reviewed-on: https://chromium-review.googlesource.com/596071
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Jaideep Bajwa <bjaideep@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#47054}
This reverts commit 7a5a777c97.
Reason for revert: crashing in test-api
Original change's description:
> [heap] Add mechanism for tracking invalidated slots per memory chunk.
>
> For correct slots recording in concurrent marker, we need to resolve
> the race that happens when
> 1) the mutator is invalidating slots for double unboxing or string
> conversions
> 2) and the concurrent marker is recording these slots.
>
> This patch adds a data-structure for tracking the invalidated objects.
> Thus we can allow the concurrent marker to record slots without
> worrying about clearing them. During old-to-old pointer updating phase
> we re-check all slots that belong to the invalidated objects.
>
> BUG=chromium:694255
>
> Change-Id: Ifc3d82918cd3b96e5a5fb7125691626a56f4ab83
> Reviewed-on: https://chromium-review.googlesource.com/591810
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47049}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: I7f4f8e8cb027b921a82e9c0a0623536af02581fb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:694255
Reviewed-on: https://chromium-review.googlesource.com/595994
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47052}
Adds a base class TestPlatform which implements the most common defaults
for v8::Platform methods.
Reworks existing cctests and unittests to use TestPlatform.
Bug:
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ifeb28a5a190529697d5bcac227e80b10d454d9bd
Reviewed-on: https://chromium-review.googlesource.com/590194
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47050}
For correct slots recording in concurrent marker, we need to resolve
the race that happens when
1) the mutator is invalidating slots for double unboxing or string
conversions
2) and the concurrent marker is recording these slots.
This patch adds a data-structure for tracking the invalidated objects.
Thus we can allow the concurrent marker to record slots without
worrying about clearing them. During old-to-old pointer updating phase
we re-check all slots that belong to the invalidated objects.
BUG=chromium:694255
Change-Id: Ifc3d82918cd3b96e5a5fb7125691626a56f4ab83
Reviewed-on: https://chromium-review.googlesource.com/591810
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47049}
- rewritten test using new harness,
- removed command line API part since we check it separatelu in inspector/runtime/command-line-api.js
R=jgruber@chromium.org
Bug: none
Change-Id: Ia12cab10a8e299bb17688c9c5f36e7f712aa70ee
Reviewed-on: https://chromium-review.googlesource.com/595032
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47048}
R=adamk@chromium.org
Bug: v8:1569
Change-Id: I3931418ef17a309789cbc5281a4542a20a1db94e
Reviewed-on: https://chromium-review.googlesource.com/596029
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47047}
Also fix one apparently-harmless bug in the Parser where we failed
to Finalize an empty scope. Without this fix, the DCHECK fails
on any C-style for-loop with a lexical binding that hits the
fast path (this is well-covered by many existing tests in mjsunit).
Thanks to Georg Neis for the suggestion of this DCHECK.
Change-Id: Ie1a8f8809f4d152c87f2da08209c610514645827
Reviewed-on: https://chromium-review.googlesource.com/587750
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47046}
Register configuration data is not the same as frame configuration data.
This CL moves the last remnants of register configuration into
the assembler files, to be with the other register configuration
macros.
Next step: extract this register configuration data into
platform-specific files that can be included independent of the
assembler.
R=mstarzinger@chromium.org
Bug:
Change-Id: I10933b5090be94e90e2a1442197528dfe30bb566
Reviewed-on: https://chromium-review.googlesource.com/595590
Commit-Queue: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47044}
This makes all the information that is present for GCTracer also
available to RCS.
Bug: chromium:748569
Change-Id: Ie7e8c3770b81ab1321cad08f6954492b72ef0514
Reviewed-on: https://chromium-review.googlesource.com/585427
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47043}
Now that the layout descriptor is pretenured, we don't need atomic
accessor for the map space.
BUG=chromium:694255
Change-Id: I0ced8c04eaa61eec0f6a7b518ecba6413a691501
Reviewed-on: https://chromium-review.googlesource.com/595742
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47042}
Remove the concept of IC age from the heap and SFI, since it no
longer does anything useful.
Change-Id: I4ce466efc77c007c09c0889bae09ec6a0c907e33
Reviewed-on: https://chromium-review.googlesource.com/593623
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47041}
This reverts commit a01ac7cbd9.
Reason for revert: Causes flakes on gc stress:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/14218
Original change's description:
> Replacing pc with trampoline on stack
>
> This CL is the follow up of https://chromium-review.googlesource.com/c/586707/
> which used to crash when running the gc-stress bots.
> It seems to be working now. We now keep the trampoline PC in the Safepoint
> table and use that information to find SafepointEntries.
>
> There's some refactoring that can be done, such as changing the code for
> exceptions in a similar way and removing the trampoline from the
> DeoptimizationInputData. Will take care of this in the next CL.
>
> Bug: v8:6563
> Change-Id: I02565297093620023a1155b55d76a4dafcb54794
> Reviewed-on: https://chromium-review.googlesource.com/593622
> Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47030}
TBR=jarin@chromium.org,bmeurer@chromium.org,jupvfranco@google.com
Change-Id: Ie9929c9acae321a91014b76b9008f8835313e67d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6563
Reviewed-on: https://chromium-review.googlesource.com/595927
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47038}
This mitigates the problem of blocking on the main thread when the
platform is unable to execute background tasks in a timely manner.
Bug: v8:6655
Change-Id: Icdaae744ee73146b86b9a28c8035138746721971
Reviewed-on: https://chromium-review.googlesource.com/595467
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47036}
