Commit Graph

63938 Commits

Author SHA1 Message Date
v8-ci-autoroll-builder
231f5585af Update V8 DEPS.
Rolling v8/build: 2943e82..a740400

Rolling v8/buildtools: 1ecfe3c..b00ad0a

Rolling v8/buildtools/linux64: git_revision:3028c6a426a4aaf6da91c4ebafe716ae370225fe..git_revision:e327ffdc503815916db2543ec000226a8df45163

Rolling v8/third_party/aemu-linux-x64: xa2xI0A-kKlMVwMtJRzexwWWPSwHynmUpB0Z6C9Y7wkC..OPyy2ts1trS4QpWQ4KGvoohvI1WfiBoTrjuFjdL-PcsC

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/5cf00e2..c4d3ff4

Rolling v8/third_party/depot_tools: 24289f2..0fa91d0

Rolling v8/tools/clang: e6863f8..95f204a

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

Change-Id: I6b94a2aa7ecec9e2f3e158a54f21cd808720d6a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2341731
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@{#69296}
2020-08-08 03:47:35 +00:00
Santiago Aboy Solanes
d01834466c [csa][cleanup] Remove ParameterMode from CalculateNewElementsCapacity
Drive-by: Also from WordOrSmiShr

Bug: v8:9708, v8:6949
Change-Id: Ic00b91988abf2120b433809dac3871eb887b8484
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339614
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69295}
2020-08-07 15:45:47 +00:00
Mythri A
07815e876d [tuboprop] Disable dynamic map checks for TurboProp
Temporarily turnoff dynamic map checks for TurboProp to measure the
impact after changing OSR heuristics.

Bug: v8:10582, v8:9684
Change-Id: Ia458be139bf7c281bda40cbcd76e7a0c3fa5d60b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2343070
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69294}
2020-08-07 15:14:57 +00:00
Almothana Athamneh
2aa2f467c2 Pass mac_xcode_version parameter
Bug: chromium:1110824
Change-Id: I77835942a81b6430ec23c16fa41dabac857e8c22
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2343079
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69293}
2020-08-07 14:09:06 +00:00
Michael Achenbach
7ca7080c2e [test] Make test work with deopt fuzzer
Bug: v8:10788
Change-Id: Iebc3f8dd892fd0f8123feaf11333eae6832589dc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2342852
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69292}
2020-08-07 12:54:16 +00:00
Andreas Haas
8cf00222d2 [wasm] Check size of table imports at instantiation time
Up until now. we only checked the size of tables defined in a module
at instantiation time. For imported tables we only checked if the
imported table matched the declared import in size. This causes a
problem because we allocate function tables also for imported tabled
before we actually look at the imported table.

With this CL we first check the size of all tables, and only then start
to initialize and load them.

R=jkummerow@chromium.org

Bug: chromium:1114006
Change-Id: Iaf194ed21fb83304fe3a7f0f7ba7b282396e3954
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339473
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69291}
2020-08-07 12:27:56 +00:00
Marja Hölttä
81fb2ebb8c [compiler] Remove a default branch in a switch
Forgetting to add a new bytecode into the lists in
serializer-in-background-compiler.cc results in a confusing CHECK
failure.

This moves the failure to a discoverable place.

Change-Id: I3e78b4702bfa724748ec8ed3f7f49e0eedc504fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2324246
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69290}
2020-08-07 11:50:35 +00:00
Andreas Haas
13d252af08 [wasm] Fix sign error in ImportTable
The cast from uint32_t to int caused an integer overflow that let a
bounds check succeed that should have failed.

R=jkummerow@chromium.org

Bug: chromium:1114005
Change-Id: Iea1af70af300be54c2a33d7dd10b3faa34d56eaa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339472
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69289}
2020-08-07 11:40:55 +00:00
Almothana Athamneh
7afba5ac25 Create a builder on V8 for mac-arm64
Bug: chromium:1113183
Change-Id: Ic877bf392756733c2b61a834016a3d6bf7f48f2a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339103
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69288}
2020-08-07 10:44:55 +00:00
Marja Hölttä
761f59acdc [Atomics.waitAsync] Tentatively enable GC fuzzer tests
The test have been rewritten to be more robust -> maybe they're
robust enough for the GC fuzzer (DelayedTasksPlatform)?

Bug: v8:10239
Change-Id: I743cc2f804357aaef888bff7985dfb68a7feec5f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2342848
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69287}
2020-08-07 10:09:57 +00:00
Zeynep Cankara
393e434479 [tools][system-analyzer] Unify CustomEvents
This CL unifies the custom events by creating
classes specialised based on the event type.
Multiple entry selection causes panels to
emit 'showentries' event. Single entry selection
causes panels to emit 'showentrydetail' event.
The events are received by the controller App class
and updates the view of the panels and state of the app.

Bug: v8:10644

Change-Id: Ibe26223459ba605c6d6d3f0025bf3a556dfb0578
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335188
Commit-Queue: Zeynep Cankara <zcankara@google.com>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69286}
2020-08-07 10:06:47 +00:00
Marja Hölttä
b400c9b705 [Atomics.waitAsync] Remove overzealous thread checks
They're not valid, since the embedder is allowed to process
tasks in several threads, if they do it in a thread safe manner.

Bug: v8:10239
Change-Id: I6c397a8bba75ab7aec3ee8ea8de416af817d9514
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2342846
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69285}
2020-08-07 09:32:07 +00:00
Leszek Swirski
cf325b5ab1 Revert "[wasm] Ensure that only TurboFan code is serialized"
This reverts commit 60ee70bb40.

Reason for revert: wasm-api-tests/WasmCapiTest.Serialize starts flaking: https://crbug.com/v8/10784

Original change's description:
> [wasm] Ensure that only TurboFan code is serialized
> 
> We have the implicit assumption that Liftoff code will never be
> serialized, and we start relying on that when implementing new features
> (debugging, dynamic tiering).
> 
> This CL makes the serializer fail if the module contains any Liftoff
> code. Existing tests are changed to ensure that we fully tiered up
> before serializing a module (similar to the logic in Chromium).
> The "wasm-clone-module" test needs to serialize the module before
> enabling the debugger.
> 
> Note that chrome currently only serializes a module after it fully
> tiered up, so that should be fine. If other embedders need the ability
> to serialize a module in an arbitrary state, we will have to fix this
> later. With this CL we will be on the safe side though and (gracefully)
> fail serialization instead of accidentally serializing Liftoff code.
> 
> R=​ahaas@chromium.org
> 
> Bug: v8:10777
> Change-Id: I1245e5f7fda3447a544c1e3525e1239cde759174
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336799
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69276}

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

Change-Id: Ic1349375bd562bb0a2724c39c27ef3247461c97b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10777
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2342845
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69284}
2020-08-07 07:38:41 +00:00
v8-ci-autoroll-builder
02cdb11d39 Update V8 DEPS.
Rolling v8/build: 2e78142..2943e82

Rolling v8/third_party/aemu-linux-x64: TfK3Whl6AfZifLOotcOS_jvckKztERlPvmVyZo16fN0C..xa2xI0A-kKlMVwMtJRzexwWWPSwHynmUpB0Z6C9Y7wkC

Rolling v8/third_party/android_platform: c1f84dc..5edcbfd

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/ac60992..5cf00e2

Rolling v8/third_party/depot_tools: 486f181..24289f2

Rolling v8/tools/clang: 1078c41..e6863f8

Rolling v8/tools/luci-go: git_revision:56ae79476e3caf14da59d75118408aa778637936..git_revision:b022173f8069cf8001d4cf2a87ce7c5f0eae220f

Rolling v8/tools/luci-go: git_revision:56ae79476e3caf14da59d75118408aa778637936..git_revision:b022173f8069cf8001d4cf2a87ce7c5f0eae220f

Rolling v8/tools/luci-go: git_revision:56ae79476e3caf14da59d75118408aa778637936..git_revision:b022173f8069cf8001d4cf2a87ce7c5f0eae220f

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

Change-Id: I783e91f9c10a8c295a9df81a16f85fdbecfcc13c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340190
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@{#69283}
2020-08-07 03:50:07 +00:00
Georg Neis
4b84b33a63 [turbofan] Fix a test
The test relies on certain maps not dying but didn't ensure that.

Bug: v8:10783
Change-Id: I708f7fc027ee0bf5656be9bb4f29130f5b924597
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340912
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69282}
2020-08-06 18:03:16 +00:00
Bill Budge
83e4c8b11d Reland "[torque] Port some constructor builtins to Torque."
This is a reland of ce249dbb2f

As it's unchanged,
TBR=leszeks@chromium.org,tebbi@chromium.org

Original change's description:
> [torque] Port some constructor builtins to Torque.
>
> - FastNewFunctionContextEval
> - FastNewFunctionContextFunction
> - CreateEmptyLiteralObject
> - CreateRegExpLiteral
> - CreateEmptyArrayLiteral
> - CreateShallowArrayLiteral
> - CreateShallowObjectLiteral
> - NumberConstructor
> - ObjectConstructor
> - GenericLazyDeoptContinuation
>
> Bug: v8:9891
>
> Change-Id: Idd4bf035d8dbeec03b9ef727e1bfb80eab4bc43c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2311411
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69082}

Bug: v8:9891
Change-Id: I566d4167c02488ef6a9a1c73015af5e2f484a31d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2330382
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69281}
2020-08-06 17:49:56 +00:00
Santiago Aboy Solanes
57f3f3d22d [codegen] Close compilation scope before launching background thread
This will ensure that the PersistentHandles are all created, and
in the OptimizedCompilationInfo before going into Exectute.

Bug: v8:7790
Change-Id: I1bc4f45153113c48422371498ff2cf79a1267737
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336803
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69280}
2020-08-06 17:19:08 +00:00
Milad Farazmand
bcb8b86711 PPC: [wasm-simd] Implement S8x16Swizzle
Change-Id: I0362b4123ccce5d2709b1705453a32697581e526
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339551
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#69279}
2020-08-06 16:00:48 +00:00
Santiago Aboy Solanes
d855a6aa03 [heap] Remove DeferredHandles instrumentation
Now that we are using PersistentHandles, we don't need it anymore.

Bug: v8:7790
Change-Id: Id0b9d555191c00fb08dc2bb9099746076c5ad1b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332161
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69278}
2020-08-06 15:57:48 +00:00
Thibaud Michaud
ce45f687dc [wasm][debug] Fix frame inspection at stack checks
Spill registers before stack checks so that we can inspect them, similar
to traps.

OSR during a stack check is still unsupported and will be fixed in a
follow-up CL.

R=clemensb@chromium.org

Bug: v8:10235
Change-Id: I22c2da6b3f79b30c3838c568f9680204afc85d36
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339467
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69277}
2020-08-06 15:44:58 +00:00
Clemens Backes
60ee70bb40 [wasm] Ensure that only TurboFan code is serialized
We have the implicit assumption that Liftoff code will never be
serialized, and we start relying on that when implementing new features
(debugging, dynamic tiering).

This CL makes the serializer fail if the module contains any Liftoff
code. Existing tests are changed to ensure that we fully tiered up
before serializing a module (similar to the logic in Chromium).
The "wasm-clone-module" test needs to serialize the module before
enabling the debugger.

Note that chrome currently only serializes a module after it fully
tiered up, so that should be fine. If other embedders need the ability
to serialize a module in an arbitrary state, we will have to fix this
later. With this CL we will be on the safe side though and (gracefully)
fail serialization instead of accidentally serializing Liftoff code.

R=ahaas@chromium.org

Bug: v8:10777
Change-Id: I1245e5f7fda3447a544c1e3525e1239cde759174
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336799
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69276}
2020-08-06 15:00:08 +00:00
Marja Hölttä
d8221df3f9 Reland "[Atomics.waitAsync] Fix removing multiple nodes when Isolate deinits"
This is a reland of 28ead05405

The failure is a test that is sensitive to adding a function
in a FunctionTemplate in d8: https://bugs.chromium.org/p/v8/issues/detail?id=10783

Original change's description:
> [Atomics.waitAsync] Fix removing multiple nodes when Isolate deinits
>
> RemoveNode already nullifies the next_ pointer of FutexWaitListNode,
> and DeleteAsyncNode was trying to retrieve it.
>
> Bug: v8:10239
> Change-Id: I595885de87f433d263eeacfc825a689efd467f5e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332812
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69259}

Bug: v8:10239
Tbr: leszeks@chromium.org
Change-Id: Icec590354886433a0b41c8f9b7af7101b54b7690
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339469
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69275}
2020-08-06 14:42:48 +00:00
Maya Lekova
4eb1505997 [turbofan] Add tests for uint64 for fast API calls
TBR=cbruni@chromium.org

Bug: chromium:1052746
Change-Id: Ib61b06bcc4cd7cf9cfa741899322739e807605b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339619
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69274}
2020-08-06 14:11:10 +00:00
Marja Hölttä
c813817d55 [compiler] Mark a test which is sensitive to unrelated conditions as [PASS, FAIL]
Bug: v8:10783
No-Try: true
Change-Id: I605813842af639158909bce13e162869b3cfc6db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339621
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69273}
2020-08-06 13:47:48 +00:00
Z Nguyen-Huu
4882bb6a8a Add fast path for Smi and non-decimal in NumberPrototypeToString
Just a fast iteration over bytes written in Torque for Smi number and
non-decimal radix, also only for more than one string character result.

Improve following micro-benchmark by ~75%

Before
toHexString
toHexString-Numbers(Score): 7905000

After
toHexString
toHexString-Numbers(Score): 14419000

Bug: v8:10477
Change-Id: I366092d4d70156ad33830352c1122af8794bea76
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2330221
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69272}
2020-08-06 13:18:48 +00:00
Leszek Swirski
93c10b26d3 Revert "[Atomics.waitAsync] Fix removing multiple nodes when Isolate deinits"
This reverts commit 28ead05405.

Reason for revert: mjsunit/compiler/serializer-transition-propagation
failure seems to bisect to this (despite looking unrelated):
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/32532

Original change's description:
> [Atomics.waitAsync] Fix removing multiple nodes when Isolate deinits
> 
> RemoveNode already nullifies the next_ pointer of FutexWaitListNode,
> and DeleteAsyncNode was trying to retrieve it.
> 
> Bug: v8:10239
> Change-Id: I595885de87f433d263eeacfc825a689efd467f5e
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332812
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69259}

TBR=ulan@chromium.org,marja@chromium.org,syg@chromium.org

Change-Id: I5db179aec5a04f59770903b17d059a7150c7efbd
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10239
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339466
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69271}
2020-08-06 12:54:30 +00:00
Leszek Swirski
1546be9cf8 [runtime] Move string table off-heap
Changes the isolate's string table into an off-heap structure. This
allows the string table to be resized without allocating on the V8 heap,
and potentially triggering a GC. This allows existing strings to be
inserted into the string table without requiring allocation.

This has two important benefits:

  1) It allows the deserializer to insert strings directly into the
     string table, rather than having to defer string insertion until
     deserialization completes.

  2) It simplifies the concurrent string table lookup to allow resizing
     the table inside the write lock, therefore eliminating the race
     where two concurrent lookups could both resize the table.

The off-heap string table has the following properties:

  1) The general hashmap behaviour matches the HashTable, i.e. open
     addressing, power-of-two sized, quadratic probing. This could, of
     course, now be changed.

  2) The empty and deleted sentinels are changed to Smi 0 and 1,
     respectively, to make those comparisons a bit cheaper and not
     require roots access.

  3) When the HashTable is resized, the old elements array is kept
     alive in a linked list of previous arrays, so that concurrent
     lookups don't lose the data they're accessing. This linked list
     is cleared by the GC, as then we know that all threads are in
     a safepoint.

  4) The GC treats the hash table entries as weak roots, and only walks
     them for non-live reference clearing and for evacuation.

  5) Since there is no longer a FixedArray to serialize for the startup
     snapshot, there is now a custom serialization of the string table,
     and the string table root is considered unserializable during weak
     root iteration. As a bonus, the custom serialization is more
     efficient, as it skips non-string entries.

As a drive-by, rename LookupStringExists_NoAllocate to
TryStringToIndexOrLookupExisting, to make it clearer that it returns
a non-string for the case when the string is an array index. As another
drive-by, extract StringSet into a separate header.

Bug: v8:10729
Change-Id: I9c990fb2d74d1fe222920408670974a70e969bca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339104
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69270}
2020-08-06 12:27:18 +00:00
Georg Neis
1a4b5ed9c6 Make VERIFY_HEAP-enabled verification depend on --verify-heap
There were a few places where we would do such verification even
without --verify-heap. The CL changes these to be in line with all
the rest.

Change-Id: Ia43708104c7d7818dc8d41d645a84f9b5e7446a8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336796
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69269}
2020-08-06 12:15:48 +00:00
Omer Katz
e072615cc2 cppgc: Establish marking invariants
This is a revival of https://chromium-review.googlesource.com/c/v8/v8/+/2228332

The CL establishes the following:
*) Objects are marked before being pushed to the worklists.
*) Live bytes are always accounted after tracing an object (i.e. move
   from Gray to Black below).
*) Previously not fully constructed objects are traced immediately
   instead of pushed to the marking worklist.

This establishes the following invariants for all marking worklists:
1) White = !object.is_marked() && !worklist.contains(object)
2) Gray = object.is_marked() && worklist.contains(object)
3) Black = object.is_marked() && !worklist.contains(object)

Bug: chromium:1056170
Change-Id: I821573b3fbc057e6ffb836154271ff986ecb4d2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336797
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69268}
2020-08-06 11:51:48 +00:00
Andreas Haas
4743426571 [wasm] Check size of tables dynamically
We used to check the size of tables at compile time, and threw a
CompilationError if a given size exceeded the implementation-defined
limit. However, the spec defines that an error should only be thrown
when the implementation-defined limit is reached, which is either at
instantiation time of during runtime at a table.grow.

With this CL the V8 implementation becomes spec compliant in this
regard.

R=jkummerow@chromium.org

Bug: v8:10556
Change-Id: I7d0e688b385a65e4060a569e5ab1dec68947ceea
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2326331
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69267}
2020-08-06 11:50:43 +00:00
Marja Hölttä
fd9c0d12ed [Atomics.waitAsync] More fixes to timeout handling
Bug: v8:10239, v8:10775
Change-Id: I0189dd8a71ef82d7c863f26511790a1ca426f72d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340906
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69266}
2020-08-06 11:49:38 +00:00
Clemens Backes
044ddd31e4 [platform] Use more tasks for jobs
Wasm recently switched from spawning a number of background tasks for
compilation to just using a single job (via the pretty new
{Platform::PostJob} API). This caused major regressions in several
benchmarks running in d8, because the {DefaultPlatform} is only using
half of the available worker threads for executing jobs with "user
visible" priority.

This CL changes this to use all available worker threads for "user
blocking" or "user visible" jobs, and two threads for "best effort"
jobs. The limit of two threads for best effort is identical to what
chromium does with best effort *tasks*. For user blocking and user
visible, chromium does not impose any limit, so we also remove the
limitation to half of the threads from d8.

Drive-by: Use {NewDefaultJobHandle} for constructing {DefaultJobHandle}.

R=mlippautz@chromium.org
CC=ahaas@chromium.org, gab@chromium.org, etiennep@chromium.org

Bug: chromium:1113234, chromium:1101340
Change-Id: I9280e649a1cf3832c562ff7251e8bda0103af111
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339481
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69265}
2020-08-06 11:35:11 +00:00
Tobias Tebbi
6647f2927c Reland "[torque] typed context slot access"
This is a reland of 408e7240d7
Change: Allow CSA load elimination accross code comments

Original change's description:
> [torque] typed context slot access
>
> This introduces a new type Slot<ContextType, SlotType> that is used
> for enum values used to access context slots.
> Together with new types for the various custom contexts used in
> Torque, this results in fairly type-safe access to context slots,
> including the NativeContext's slots.
>
> Drive-by changes:
> - Introduce a new header file to specify headers needed for
>   generated CSA headers, to reduce the amount of includes specified
>   in implementation-visitor.cc
> - Port AllocateSyntheticFunctionContext to Torque.
>
> Bug: v8:7793
> Change-Id: I509a128916ca408eeeb636a9bcc376b2cc868532
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335064
> Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#69249}

Bug: v8:7793
Change-Id: I1fe100d8d62e8220524eddb8ecc4faa85219748d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339462
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69264}
2020-08-06 11:32:38 +00:00
Zeynep Cankara
54fd06268a [tools][system-analyzer] Sync Timeline Track Scrolling
This CL sync the timeline-tracks positions
upon receiving a horizontal scrolling event.

Bug: v8:10644

Change-Id: I69bc1066a3f5da6ddc978ad71fe77820df8066bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336806
Commit-Queue: Zeynep Cankara <zcankara@google.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69263}
2020-08-06 10:56:28 +00:00
Jakob Gruber
febd37b13a [nci] Allow OSR to NCI code in testing modes
In the --turbo-nci-as-highest-tier testing mode, allow NCI codegen for
OSR to increase coverage and simplify logic.

Bug: v8:8888
Change-Id: I254939928f92bf675dbf2b78cdd5b5dce802d972
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339460
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69262}
2020-08-06 10:17:00 +00:00
Dominik Inführ
850739bbd6 Revert "[heap] Add safepoints in Heap GC methods"
This reverts commit 1742d2561f.

Reason for revert: Longer safepoint can cause deadlocks with global handles.

Original change's description:
> [heap] Add safepoints in Heap GC methods
> 
> Add safepoints to GC methods in Heap. There is still stuff in
> Heap::CollectGarbage which might work better or more precise in a global
> safepoint. Be conservative here and move everything into the safepoint,
> eventually we can start to move code out that is fine to run outside
> the safepoint.
> 
> Bug: v8:10315
> Change-Id: I656dfd72f032eff6f386cec63a02777506650aa7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335192
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69228}

TBR=ulan@chromium.org,dinfuehr@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:10315
Change-Id: Idaf575911b34674c16d46b41c2ebee9f56dbac6d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339617
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69261}
2020-08-06 09:56:58 +00:00
Clemens Backes
0c918bd841 [wasm] Remove ExecutionTier::kInterpreter
The interpreter is not an execution tier in production any more. It's
only used in tests.
Thus, remove {ExecutionTier::kInterpreter} and instead add a
{TestExecutionTier} that still has {kInterpreter}.

If needed (in {TestingModuleBuilder::execution_tier()}), we translate
back from {TestExecutionTier} to {ExecutionTier} (for {kLiftoff} and
{kTurboFan} only).

The {TraceMemoryOperation} method, which is shared between interpreter
and production code, now receives a {base::Optional<ExecutionTier>}, and
we will just pass en empty optional if called from the interpreter.

R=thibaudm@chromium.org

Bug: v8:10389
Change-Id: Ibe133b91e8dca6d6edbfaee5ffa0d7fe72ed6d64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335186
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69260}
2020-08-06 09:31:18 +00:00
Marja Hölttä
28ead05405 [Atomics.waitAsync] Fix removing multiple nodes when Isolate deinits
RemoveNode already nullifies the next_ pointer of FutexWaitListNode,
and DeleteAsyncNode was trying to retrieve it.

Bug: v8:10239
Change-Id: I595885de87f433d263eeacfc825a689efd467f5e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2332812
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69259}
2020-08-06 09:24:47 +00:00
Anna Henningsen
e06ace6b5c [api] Fix empty Maybe crash in GetRealNamedPropertyAttributes
`Object::GetRealNamedPropertyAttributes()` can crash if an empty
`Maybe` is returned by `JSReceiver::GetPropertyAttributes()` because
it was not checking for that. Fix that.

Refs: https://github.com/nodejs/node/issues/34606
Change-Id: Ic83f904ba7134786bcd8f786eb2ce98adb4fea1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335057
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69258}
2020-08-06 09:14:48 +00:00
Marja Hölttä
6315167fcf [Atomics.waitAsync] Fix: mark timeout task as cancelled properly
Bug: v8:10239, v8:10775
Change-Id: Ic12f9da7f8bb10f83c9e3c00f39a26412e058943
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340904
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69257}
2020-08-06 08:40:57 +00:00
Jakob Gruber
a55a2447fb Revert "[torque] typed context slot access"
This reverts commit 408e7240d7.

Reason for revert: debug builds fail

is_component_build = true
is_debug = true
use_goma = true
v8_enable_backtrace = true
v8_enable_debugging_features = true
v8_enable_fast_mksnapshot = true
v8_enable_slow_dchecks = true
v8_enable_snapshot_code_comments = true
v8_enable_verify_csa = true
v8_optimized_debug = false
v8_use_multi_snapshots = false

# Fatal error in ../../src/compiler/backend/instruction-selector.cc, line 3088
# Expected Turbofan static assert to hold, but got non-true input:
  static_assert(nativeContext == LoadNativeContext(context)) at src/builtins/promise-resolve.tq:45:5


Original change's description:
> [torque] typed context slot access
> 
> This introduces a new type Slot<ContextType, SlotType> that is used
> for enum values used to access context slots.
> Together with new types for the various custom contexts used in
> Torque, this results in fairly type-safe access to context slots,
> including the NativeContext's slots.
> 
> Drive-by changes:
> - Introduce a new header file to specify headers needed for
>   generated CSA headers, to reduce the amount of includes specified
>   in implementation-visitor.cc
> - Port AllocateSyntheticFunctionContext to Torque.
> 
> Bug: v8:7793
> Change-Id: I509a128916ca408eeeb636a9bcc376b2cc868532
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335064
> Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#69249}

TBR=tebbi@chromium.org,seth.brenith@microsoft.com

Change-Id: I90c014022a808449aca4a9b9b3c3b8e036beb28e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7793
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340903
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69256}
2020-08-06 07:56:49 +00:00
Michael Achenbach
fe850a8015 Revert "Override _runner_flags for num_fuzzer.py"
This reverts commit 3927c9c481.

Reason for revert:
https://ci.chromium.org/p/v8/builders/ci/V8%20NumFuzz%20-%20debug/10732

Original change's description:
> Override _runner_flags for num_fuzzer.py
> 
> This CL ensures that we add the
> '--fuzzing' flag to the num_fuzzer script.
> Please note that NumFuzzer does not inherit the
> StandardTestRunner class but it inherits
> BaseTestRunner so we had to override _runner_flags.
> 
> Bug: v8:10755
> Change-Id: Ifb779ba402106b8f2ce4d0e13090ef2db468a6ae
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335185
> Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69241}

TBR=machenbach@chromium.org,liviurau@chromium.org,almuthanna@chromium.org

Change-Id: Ie39fb87a0e53c5cbbc276f8efb6e4a89ce44bb74
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10755
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2340902
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69255}
2020-08-06 07:03:50 +00:00
Omer Katz
ed2c70704f cppgc: Use full qualifier in prefinalizer macro.
Pdfium folks can't build pre-finalizers due to the missing qualifier.

Bug: chromium:1056170
Change-Id: Ib90859880e845c714c52f10ee50841ac46bcb0ef
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339477
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69254}
2020-08-05 15:50:07 +00:00
Tobias Tebbi
f08bd2ce17 [torque][csa] fix word8 phi MachineRepresentation
Make sure that Torque/CSA generated phi's get kRepWord32 instead
of kRepWord8 or kRepWord16, since that's how we handle small
integer values in Turbofan.

Bug: v8:7793
Change-Id: I992b43287552b6117e90fbd0e11576470bc91509
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339096
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69253}
2020-08-05 15:25:46 +00:00
Mythri A
bd9609a01d [turboprop] Change heuristics for OSRing in TurboProp
Change the heuristics for OSRing in TurboProp. Currently we OSR if
a funciton is already optimized / marked for optimization but is still
running optimized code. Since TurboProp optimizes much earlier than
TurboFan using the same heuristics would cause us to OSR more often
than required. This cl adds an additional check on the number of ticks
to make sure the function is hot enough for OSRing.

Bug: v8:9684
Change-Id: I7a1c8229182a928fd85efb23e2d385413c5209ef
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339098
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69252}
2020-08-05 15:14:36 +00:00
Jakob Gruber
82fc74c91b [nci] Check the isolate cache from within compiler.cc
Just like the optimized code cache, the compiler should check the
isolate cache for NCI code objects and return them if they exist.

Drive-by: Skip additional tests to fix the nci_as_highest_tier test
variant. These are related to interactions with deoptimization, which
NCI code doesn't fully support yet.

Bug: v8:8888
Change-Id: I6253811f96993796cfc38fff0da7ffb4f1a5eb24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339095
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69251}
2020-08-05 15:12:36 +00:00
Manos Koukoutos
a61aaed9b3 [wasm-gc] Allow reference types to function signatures
Changes:
- Remove restriction that function types cannot be used as ref types.
- Introduce WasmModule::has_type().
- Remove deferred signature checks in module-decoder. Instead, check if
  type indices are out of bounds in consume_value_type (was bugged
  before).
- Remove obsolete GetCanonicalRttIndex.
- Refine type of ref.func.
- Statically check immediate type against table type for call_indirect.
- Dynamic check for call_indirect should only happen when for funcref
  (currently the only function supertype).
- Allocate a different map per function signature (with Map::Copy).
- Introduce function type equivalence and (trivial) subtyping.
- Add a few elementary tests.

Bug: v8:7748
Change-Id: If57d0bfd856c9eb3784191f3de423f53dfd26ef1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335190
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@{#69250}
2020-08-05 14:38:56 +00:00
Tobias Tebbi
408e7240d7 [torque] typed context slot access
This introduces a new type Slot<ContextType, SlotType> that is used
for enum values used to access context slots.
Together with new types for the various custom contexts used in
Torque, this results in fairly type-safe access to context slots,
including the NativeContext's slots.

Drive-by changes:
- Introduce a new header file to specify headers needed for
  generated CSA headers, to reduce the amount of includes specified
  in implementation-visitor.cc
- Port AllocateSyntheticFunctionContext to Torque.

Bug: v8:7793
Change-Id: I509a128916ca408eeeb636a9bcc376b2cc868532
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2335064
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#69249}
2020-08-05 14:28:16 +00:00
Jakob Gruber
d649229d15 Fix machine graph verifier error
... introduced by
https://chromium-review.googlesource.com/c/v8/v8/+/2336793/

The parameter is called 'is_stub', but actually means 'not optimized
JS code, nor wasm'.

Tbr: leszeks@chromium.org
Bug: v8:8888
Change-Id: I1dc2cf95cca6af5dd584dd889324edc94f44a628
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339314
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69248}
2020-08-05 14:03:07 +00:00
Peter Marshall
beebee4f80 cpu-profiler: Use Handle version of SourcePositionTableIterator
The surrounding code can trigger an allocation through InliningStack
which can eventually end up allocating a line ends array.

This is fine as-is because the existing iterator code makes a copy
of the byte array. It just triggers the no_gc dcheck in debug mode.

Fixed: v8:10778
Change-Id: Ic8c502767ec6c3d3b1f5e84df60638bd2fc6be75
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2339102
Auto-Submit: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69247}
2020-08-05 13:52:49 +00:00