Commit Graph

67019 Commits

Author SHA1 Message Date
Michael Lippautz
117f9b051c cppgc: Sweeper: Get task runner only when scheduling sweeping
Platform::GetForegroundTaskRunner() can only be used after attaching
an Isolate in V8. Work around that problem by getting the runner only
when needed.

Bug: chromium:1056170
Change-Id: If15ec691e7f5cf11be8b7a3bc18827246ac083d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674009
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72527}
2021-02-04 13:35:53 +00:00
Clemens Backes
8aadf7c5cb [wasm][debug] Generate debug sidetable from code alone
Instead of passing a bunch of objects and pointers to
{GenerateLiftoffDebugSideTable}, just pass the WasmCode pointer for
which the debug sidetable should be created.

This requires changing the corresponding cctests to actually compile
code, such that we can get a WasmCode pointer.

R=thibaudm@chromium.org

Bug: chromium:1172299
Change-Id: If42f06a545feb590f9c2377ce95e6214bbc6f566
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674006
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72526}
2021-02-04 13:25:53 +00:00
Sathya Gunasekaran
a9eff909e9 [compiler] Use vector to hold translation array
ZoneChunkList has more overhead than a simple ZoneVector for storing
uint8_t bytes.

Bug: v8:9684
Change-Id: I5e22286f2628ae2010086e9d82cadbebb176dbee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661459
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72525}
2021-02-04 12:08:23 +00:00
Frank Emrich
527754fbae [dict-proto] Constness tracking of dictionary properties (jitless)
For dictionary mode objects, whether or not a property is constant was
not tracked before. This CL makes the required non-Turbofan changes,
guarded behind the new flag V8_DICT_PROPERTY_CONST_TRACKING.

In addition, prototypes are not converted to fast mode objects if this
flags is enabled.

Bug: v8:11247
Change-Id: Ia5942733239a97560b6efc015f0e25a35fea3d7a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2566757
Commit-Queue: Frank Emrich <emrich@google.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72524}
2021-02-04 11:42:33 +00:00
Clemens Backes
409f7bb399 [codegen][arm64] Avoid one use of PatchingAssembler
Creating a PatchingAssembler has significant overhead, including a
dynamic allocation for the assembler buffer implementation. In the case
of {Assembler::bind} we just need it to overwrite a machine word. Hence
avoid creating the PatchingAssembler for this trivial work and just use
Memcpy directly.

R=jkummerow@chromium.org

Change-Id: I83510cfd7ebdb0d0c378df548b442eabf3727aeb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668827
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72523}
2021-02-04 10:05:53 +00:00
Jakob Gruber
e79b841bee [literals] Add a dedicated regexp boilerplate type
... 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}
2021-02-04 07:53:23 +00:00
Liu Yu
996a2dd9b9 [mips][builtins] Clear c_entry_fp when entering JS and at exception path
Port: 07b03b8353

Bug: v8:10026
Change-Id: Ia9e5f420253a4fb3726a4064ed2471684af610e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2670168
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72521}
2021-02-04 06:40:03 +00:00
Liu Yu
fca1d52bd4 [mips][wasm-simd] Prototype i8x16.popcnt
Port: e2aa734aef

Bug: v8:11002
Change-Id: I8564a810938a07031afab20bd5448f048d4bb5de
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674182
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72520}
2021-02-04 04:15:23 +00:00
v8-ci-autoroll-builder
251ab1f664 Update V8 DEPS.
Rolling v8/base/trace_event/common: 9b27757..71cb2ac

Rolling v8/build: dc9dc45..10e5511

Rolling v8/third_party/aemu-linux-x64: _nJMIPzu-ykpL-XPjf14IZ3CAFT3iQRtsbzyiSm9u7QC..daCtImfwROvNf-7jcpyqZ6KMCGlIQv9BROkyXnulGioC

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/4920147..5c5a297

Rolling v8/third_party/depot_tools: 8c95595..6dc9cc3

Rolling v8/third_party/icu: f4147b2..70dd9a6

Rolling v8/third_party/instrumented_libraries: 4d38670..0964a78

Rolling v8/tools/clang: ec98581..4ee065a

TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I0ae82b75d2cf91fbbde2cb242fd49fa3493bbede
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674325
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#72519}
2021-02-04 04:06:15 +00:00
Ng Zhi An
f65701b014 [wasm-simd][ia32] Implement i64x2.ne and i64x2 all_true
Bug: v8:11347,v8:11348
Change-Id: I47ba950b80197d1d769d93aa68266131be9bf31d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666146
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72518}
2021-02-03 23:45:08 +00:00
Ng Zhi An
3c746bed85 [wasm-simd][fuzzer] Fix fuzzing simd load lane
Load lane instructions also need a v128 input.

Bug: chromium:1173488
Change-Id: I45e4c4f8fc93a5b3246ac4d1b07925b41cbe3e89
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673275
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72517}
2021-02-03 22:25:18 +00:00
Milad Fa
01fbc8c405 PPC/s390: [compiler] Fix pushing of arguments
Port 8798b3ef4e
Port 1d3c80d303

Original Commit Message:

    - Fixes some incorrect assumptions about padding in the
      code generation. Slots may have apparent extra padding
      when allocation fragments go unused.
    - Reworks 32 bit push code to simplify skipping slot gaps
      when 'push' instructions are used.
    - Adds a ElementSizeInPointers function on machine
      representations.

R=bbudge@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I076ae8396434610c52fed040ace5e0f49ea3ef88
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673142
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72516}
2021-02-03 22:15:08 +00:00
Bill Budge
1d3c80d303 [compiler][backend][arm] Fix incorrect stack adjustment
- Stack adjustment was in slots, when it should be in bytes.

Bug: v8:11391
Change-Id: Ia791f2b637337279be62d66377f9b5be35f31839
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2674062
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72515}
2021-02-03 21:29:49 +00:00
Ng Zhi An
4e61ba4221 [wasm-simd][cleanup] Fix some conversion instruction names
These didn't have the right suffix (i32 instead of i32x4).

Also, names are longer now, so when tracing them, give the names column
more space.

Bug: v8:11384
Change-Id: Id11e0d23b344310121ae4e2e5910528cab2d6f73
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673264
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72514}
2021-02-03 20:51:48 +00:00
Ng Zhi An
6e207d8b55 Skip failing regression test on ODROID
Bug: v8:11391
Change-Id: Icb4b6b04cc0591f9b27256f7b58daed6c4fdffa2
No-Try: true
No-Tree-Checks: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673276
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72513}
2021-02-03 19:21:59 +00:00
Zhi An Ng
1e419094c1 Revert "[wasm-simd] Update spec tests"
This reverts commit 64471ba93d.

Reason for revert: Fails on nosse3/nosse4 https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux/40643/overview

Original change's description:
> [wasm-simd] Update spec tests
>
> We can also unmark some SIMD tests as failed since we are now inline
> with spec.
>
> Bug: v8:11331
> Change-Id: I4b98ae068008c55535dbbbf0312a55aa03e7e83d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668060
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72507}

TBR=ahaas@chromium.org,zhin@chromium.org

Change-Id: I11a6670e42956bdcc66c371d2d852623030948b4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:11331
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2673265
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72512}
2021-02-03 18:22:09 +00:00
Junliang Yan
1111bd1c91 s390x: [liftoff] implement LoadReturnStackSlot
Change-Id: Ifa2b160e42bad2b3ae93a3c310d5fa158ffbd286
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672705
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72511}
2021-02-03 18:20:48 +00:00
Milad Fa
1de07aef06 PPC/s390: [wasm-simd] Implement i8x16.popcnt
Implementation for PPC will be added in a later CL.

Port dd90d107a9

Original Commit Message:

    Code sequence from https://github.com/WebAssembly/simd/pull/379, and
    exactly the same as x64, with minor tweaks for
    ExternalReferenceAsOperand.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I2be8a9cf04d0b327c15f47c2575877925238353c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672706
Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72510}
2021-02-03 18:19:18 +00:00
Ng Zhi An
357ba1bae7 [wasm-simd][x64] Add missing SSE4_1 scope
roundpd requires SSE4.1.

Bug: v8:11265
Change-Id: I1b5d322946de44f57026b09ec406d32128e5b3bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668916
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72509}
2021-02-03 18:16:58 +00:00
Shu-yu Guo
9689b17687 [top-level-await] Implement spec fix for cycle root detection
There is a bug in the top-level await spec draft such that async
strongly connected components are not always evaluated before their
depending modules.

See https://github.com/tc39/proposal-top-level-await/pull/161 for full
discussion and spec fix.

Bug: v8:11376
Change-Id: I88bf06afb2e9a5d8d0b757de8276f1d1242a875e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667772
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72508}
2021-02-03 18:07:58 +00:00
Ng Zhi An
64471ba93d [wasm-simd] Update spec tests
We can also unmark some SIMD tests as failed since we are now inline
with spec.

Bug: v8:11331
Change-Id: I4b98ae068008c55535dbbbf0312a55aa03e7e83d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668060
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72507}
2021-02-03 17:13:17 +00:00
Bill Budge
9da4e36390 Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size"""
This is a reland of 352b9ecbdb

The test/fix CL has been merged in, as the fixes to return slot
accounting are needed to fix Arm64 issues turned up by the fuzzers:

https://chromium-review.googlesource.com/c/v8/v8/+/2644139

Original change's description:
> Reland "Reland "[compiler][wasm] Align Frame slots to value size""
>
> This is a reland of 1694925c72
>
> Minor fix to linkage for constexpr.
>
> TBR=ahaas@chromium.org,neis@chromium.org
>
> Original change's description:
> > Reland "[compiler][wasm] Align Frame slots to value size"
> >
> > This is a reland of cddaf66c37
> >
> > Original change's description:
> > > [compiler][wasm] Align Frame slots to value size
> > >
> > > - Adds an AlignedSlotAllocator class and tests, to unify slot
> > >   allocation. This attempts to use alignment holes for smaller
> > >   values.
> > > - Reworks Frame to use the new allocator for stack slots.
> > > - Reworks LinkageAllocator to use the new allocator for stack
> > >   slots and for ARMv7 FP register aliasing.
> > > - Fixes the RegisterAllocator to align spill slots.
> > > - Fixes InstructionSelector to align spill slots.
> > >
> > > Bug: v8:9198
> > >
> > > Change-Id: Ida148db428be89ef95de748ec5fc0e7b0358f523
> > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2512840
> > > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > > Reviewed-by: Georg Neis <neis@chromium.org>
> > > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#71644}
> >
> > Bug: v8:9198
> > Change-Id: Ib91fa6746370c38496706341e12d05c7bf999389
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633390
> > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > Reviewed-by: Georg Neis <neis@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#72195}
>
> Bug: v8:9198
> Change-Id: I91e02b823af8ec925dacf075388fb22e3eeb3384
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2640890
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72209}

Bug: v8:9198
Change-Id: I8258f87463f66417c7028b9a1fed4b9b6d82a3be
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669892
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72506}
2021-02-03 16:50:47 +00:00
Mythri A
52e507bef4 [turboprop] Use Turboprop for OSR compilations
OSR compilations happen on main thread and the functions that are called
from would have been already optimized. Also this code is only used for
this invocation. So to limit the amount of time spent on main thread
we could do a quick Turboprop compilation instead of a highly optimized
TurboFan compilaiton.

Change-Id: Ifcdcb5c855d8a9a56b13c1940b4ee0ed3bfb4d67
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2659257
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72505}
2021-02-03 16:46:29 +00:00
Michael Achenbach
ca18989601 [test] Update Mac testing from 10.13 to 10.15
Bug: chromium:1174040
Change-Id: I2ee539e5074707ac93f97a9a3a131e9c2745cdbe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672180
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72504}
2021-02-03 16:26:57 +00:00
Michael Lippautz
e963b636a5 cppgc: Add testing API structure
Adds testing API that can only be used after enabling it on a heap.
The call that enables testing is only provided via v8_for_testing or
cppgc_for_testing build targets which protects against misusing from
production code.

Change-Id: I24a8f5543a2bb479481384e2c555d231383e5d12
Bug: chromium:1056170
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667513
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72503}
2021-02-03 16:00:37 +00:00
Bill Budge
8798b3ef4e [compiler][ia32][arm] Fix pushing of arguments
- Fixes some incorrect assumptions about padding in the
  code generation. Slots may have apparent extra padding
  when allocation fragments go unused.
- Reworks 32 bit push code to simplify skipping slot gaps
  when 'push' instructions are used.
- Adds a ElementSizeInPointers function on machine
  representations.

Bug: chromium:1171759,v8:9198

Change-Id: I029e300fa9c306d7e35344576fd1c68857cf2bca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2660379
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72502}
2021-02-03 15:46:32 +00:00
Thibaud Michaud
c781da6c8b [wasm][eh] Add use counter for exception handling
R=ahaas@chromium.org,ulan@chromium.org

Bug: v8:8091
Change-Id: Ia826e18bd06b5e6d401ff43b33b43b4e4c2a69db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672022
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72501}
2021-02-03 15:45:27 +00:00
Sathya Gunasekaran
91ea05911e [isolate] Don't create unnecessary handles
IsAnyInitialArrayPrototype doesn't need an handlified input argument
as it doesn't cause GC.

This improves performance of MapData::MapData as canonical handle scope
creation is expensive.

Change-Id: I2e1a46354276857b64867ea3e994356faef8950e
Bug: v8:9684
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2671659
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72500}
2021-02-03 15:44:23 +00:00
Seth Brenith
cffd8bc86a [torque] Add @relaxedRead annotation
When generating getters, Torque needs to decide whether to perform a
normal or relaxed load. Thus far, it has used the somewhat non-obvious
logic that any indexed field with tagged non-smi data gets relaxed
loads. This change adds a new annotation @relaxedRead to be consistent
with the existing @relaxedWrite annotation. I added @relaxedRead
annotations on any field that previously had this automatic behavior and
whose getter is called, except for those in ScopeInfo because I'm
relatively confident that it doesn't need relaxed access.

Bug: v8:7793
Change-Id: I9987eea13760b967f1b8a3189b69742e55140c30
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2600113
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72499}
2021-02-03 15:43:17 +00:00
Leszek Swirski
b84baffbe7 [tools] Fix whitespace
Fix some trailing whitespace issues in files in the tools directory.

Change-Id: If9e9b1dab1d6f521e20619a2a1d093749f0528d9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2671660
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72498}
2021-02-03 15:42:11 +00:00
Santiago Aboy Solanes
b5d4eb470e [compiler] Move GetPropertyKey to DescriptorArrayRef
Also access the DescriptorArray through GetPropertyKey concurrently if
the FLAG_turbo_direct_heap_access is on.

Bug: v8:7790
Change-Id: I29e5895fefc3653f954ba56aa85218121402e7ed
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653232
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72497}
2021-02-03 14:56:11 +00:00
Milad Fa
f83601408c PPC/s390: Fix frame size to account for q registers
Port 45b99aaa58

Original Commit Message:

    In https://crrev.com/c/2645694 we push the full q registers before lazy
    compile, but we did not change the fixed frame size to account for the
    wider registers being pushed.

    This manifested in the frame having data like:

    (gdb) x/10xg start.ptr_
    0x7f5576ff3eb0: 0x0000000000000000      0x0000336b08202759
    0x7f5576ff3ec0: 0x7ff000007f801000      0x0000000000000000
    0x7f5576ff3ed0: 0x7ff000007f801001      0x0000000000000000
    0x7f5576ff3ee0: 0x7ff000007f801002      0x0000000000000000
    0x7f5576ff3ef0: 0x7ff000007f801003      0x0000000000000000

    The GC then walks part of this frame, thinking that 0x7ff000007f801003
    is a heap object, and then crashes.

    Add some static_asserts (similar to builtins-x64) to remind ourselves
    that the pushed registers have to match the size in frame constants.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I994f1b7fecbb24ea97d846b1eed98201bc3b08ad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669308
Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72496}
2021-02-02 23:05:42 +00:00
Ng Zhi An
dd90d107a9 [wasm-simd][ia32] Implement i8x16.popcnt
Code sequence from https://github.com/WebAssembly/simd/pull/379, and
exactly the same as x64, with minor tweaks for
ExternalReferenceAsOperand.

Bug: v8:11002
Change-Id: Icbfdac62b21c2734ad4886b3d48f34e29f7a8222
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664860
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72495}
2021-02-02 23:02:49 +00:00
Milad Fa
809b6481cb PPC/s390: [wasm-simd] Add i64x2 ne and alltrue
Port 910d92e227

Original Commit Message:

    This is a partial revert of https://crrev.com/c/2457669 to add back
    i64x2.ne and i64x2.all_true, which were accepted into the proposal
    (https://github.com/WebAssembly/simd/issues/419).

    This only implements it for x64 and arm64 on TurboFan, other archs and
    Liftoff will come later.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I9aedc94f665a7e02426e0abe44cea72176063942
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668830
Reviewed-by: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72494}
2021-02-02 20:51:36 +00:00
Ng Zhi An
3fca8f85c9 [wasm-simd][ia32] Consolidate some SSE/AVX i8x16 opcodes
Bug: v8:11217
Change-Id: I6e61b11babc0baecf7b1982ef779b941d3344182
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667971
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72493}
2021-02-02 19:30:36 +00:00
Milad Fa
d913f0461d PPC: Push the full q register before lazy compile
V8 uses the same set of fp param registers as Simd param registers.
As these registers are two different sets on ppc we must make
sure to also save them when Simd is enabled.
Check the comments under crrev.com/c/2645694 for more details.

Port 3b302d5cfe

Original Commit Message:

    If a lazy compilation happens in between 2 Wasm calls, we need to save
    the full Q register, since we can have live v128 values.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Icdd0a6d38225a866b61651ff406598c144c25ebf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667952
Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72492}
2021-02-02 19:22:36 +00:00
Ng Zhi An
2e9b0e90c2 [wasm-simd] Fix I8x16UConvertI16x8 in interpreter
We were hitting an implementation defined behavior in this instruction:

- v is clamped to uint8_t::min and uint8_t::max
- then we static_cast<int8_t>(v)
- any values that don't fit in int8_t (> 127) hits and implementation
defined behavior

We reuse base::saturated_cast here instead to avoid this undefined
behavior.

Drive-by cleanup of test cases to make the signed/unsigned cases more
explicity.

Bug: v8:11372
Change-Id: I4e92cdfb685d74bd5436ba25f1c00db49a231221
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2659501
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72491}
2021-02-02 18:50:45 +00:00
Thibaud Michaud
ef3e9cb059 [wasm][eh] Add missing checks before using EH opcodes
R=clemensb@chromium.org

Bug: v8:8091
Change-Id: Id2f0b4635ee235c592a969a41d1f50ed677150f2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667857
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72490}
2021-02-02 17:37:45 +00:00
Ng Zhi An
910d92e227 [wasm-simd][x64][arm64] Add i64x2 ne and alltrue
This is a partial revert of https://crrev.com/c/2457669 to add back
i64x2.ne and i64x2.all_true, which were accepted into the proposal
(https://github.com/WebAssembly/simd/issues/419).

This only implements it for x64 and arm64 on TurboFan, other archs and
Liftoff will come later.

Bug: v8:11347,v8:11348
Change-Id: I86934478760e3d501ecdb3ce6c9b702764cc0838
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2665005
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72489}
2021-02-02 17:29:47 +00:00
Junliang Yan
0df3de1849 s390x: [liftoff] implement caller frame load/store
Change-Id: I6b0aa0daab07728f5a524ecba289276c7fa33a08
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668568
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72488}
2021-02-02 17:28:25 +00:00
Marja Hölttä
b5dae1e4e3 Reland [d8] Fix a crash when getting the worker's onmessage handler
Now with more fixes.

Bug: chromium:1162473, v8:11383
Change-Id: I54751cef03f6b2b1dc70324486441c9b0b011cc1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667512
Auto-Submit: Marja Hölttä <marja@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72487}
2021-02-02 14:24:53 +00:00
Junliang Yan
3a159b87f4 s390x: [liftoff] only reverse when access mem
Change-Id: I34552a97244c5f4c343d16e5093676e3af5c210b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667510
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72486}
2021-02-02 13:57:33 +00:00
Benedikt Meurer
ee58dde23b [wasm][debug] Add support for conditional breakpoints.
Previously the WebAssembly debugger support completely ignored the
condition on breakpoints. With this change, we check conditions
(snippets of JavaScript) properly, which enables not only conditional
breakpoints in the front-end, but also other features like 'Never pause
here' (which simply sets `false` as condition) and log points.

Fixed: chromium:1173007
Bug: chromium:1173006
Change-Id: I02c740d383378a1f4cc08134ad571bea08e9a905
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666690
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72485}
2021-02-02 13:42:24 +00:00
Clemens Backes
0363eb4da0 [wasm][debug] Generate sidetables for stepping lazily
We are often stepping multiple times without inspecting the state
in-between. Hence, the generated debug side table is often not being
used. Instead of always generating it, we can generate it lazily on
demand, which can avoid the need to generate it at all.

R=thibaudm@chromium.org

TEST=inspector/debugger/wasm-stepping

Bug: chromium:1172299
Change-Id: I9b9ff4485d65d720d23585856b3d672925460667
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664446
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72484}
2021-02-02 13:00:03 +00:00
Santiago Aboy Solanes
be3a6690bd [compiler] Perform FindFieldOwner concurrently through Refs
Also, enable concurrent GetBackPointer().

Bug: v8:7790
Change-Id: If92cb7cdd9e6f5eb9a636764ca8abe2fc2c05ab2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2650205
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72483}
2021-02-02 12:29:53 +00:00
Jakob Kummerow
26653f894c [wasm-gc] Fix ref.is_null in Liftoff
When constant-folding the test based on static types in the function
body decoder, we have to ensure Liftoff's value stack is properly
updated.

Fixed: chromium:1172912
Change-Id: I618992608882b850a8a4bce0b267ce456e4c2a40
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664447
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72482}
2021-02-02 12:26:23 +00:00
Clemens Backes
3ee7b5c6c4 Revert "[d8] Fix a crash when getting the worker's onmessage handler"
This reverts commit a850668ccf.

Reason for revert: new test flaking on many bots, e.g. https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win32/31068/overview

Original change's description:
> [d8] Fix a crash when getting the worker's onmessage handler
>
> Bug: chromium:1162473
> Change-Id: Ided2f52882aaf02e1dc9a8d0ba883fedf029464d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2663004
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72473}

TBR=marja@chromium.org,cbruni@chromium.org

Change-Id: I5ec056185967974a94fd61baec8a75e855e1a272
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1162473, v8:11383
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666693
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72481}
2021-02-02 12:14:15 +00:00
Leszek Swirski
5a0b81b493 [arm64/sim] Add a simple backtrace debug command
Add a simple backtrace/bt command to the simulator debugger, which does
the frame-pointer stack walk and dumps pc/fp/sp for each frame.

This is strictly less powerful than the full JS stack dump, but can be
used to debug issues with corrupted frames that prevent the JS stack
dumper from working correctly.

Change-Id: I26cc962ab8d22c0a219d6a35548544602aa89418
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666688
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72480}
2021-02-02 12:04:33 +00:00
Leszek Swirski
1f72df06b3 [arm64/sim] Add a 'sim' gdb command
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}
2021-02-02 11:59:53 +00:00
Clemens Backes
1f85cb19df [wasm][debug] Add test for conditional breakpoints
Conditional breakpoints are not implemented yet; the condition is just
ignored for wasm. This CL adds a test for conditional breakpoints. The
output is expected to change once the implementation is finished.

R=bmeurer@chromium.org

Bug: chromium:1173007
Change-Id: I15e0053ec8b57e28b8eadc208f35bbf70437682e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666692
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72478}
2021-02-02 11:40:03 +00:00