Commit Graph

1628 Commits

Author SHA1 Message Date
Thibaud Michaud
e33c13c2a2 [wasm][eh] Revert to catch with tag immediate
First step towards the new exception handling proposal:
https://github.com/WebAssembly/exception-handling/issues/125

This is essentially a revert of:
"[wasm] Switch to new 'catch' and 'br_on_exn' proposal."

The changes are:
- "catch" instruction takes a tag immediate,
- "rethrow" instruction takes a label immediate,
- Add "catch_all" instruction,
- Remove "br_on_exn" instruction,
- Do not push exceptions on the stack, only the encoded values

R=clemensb@chromium.org
CC=​aheejin@chromium.org

Bug: v8:8091
Change-Id: Iea4d8d5a5d3ad50693f645e93c13e8de117aa884
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2484514
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71602}
2020-12-03 18:55:31 +00:00
Philip Pfaffe
8ca19603a2 [wasm debug] Cache name tables for the wasm debug proxy.
Also construct the `JSMap`s used to store these names lazily and
only on-demand, and construct them directly instead of first doing
a `std::vector<Handle<String>>` and using that to construct the
`JSMap`. The latter resulted in a gigantic root set of 150k+ handles,
which wasn't well received by the GC.

Bug: chromium:1154154
Fixed: chromium:1154564
Also-By: bmeurer@chromium.org
Change-Id: I92e8931f15eda133e2a62b5cc53fbe1f2dafcead
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2568275
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Auto-Submit: Philip Pfaffe <pfaffe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71589}
2020-12-03 08:24:53 +00:00
Zhi An Ng
d64759c3a8 Revert "Reland "[wasm-simd][arm] Prototype i8x16.popcnt""
This reverts commit d0f7c6a8fa.

Reason for revert: Causing flaky tests https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64%20-%20debug/31929/overview

Original change's description:
> Reland "[wasm-simd][arm] Prototype i8x16.popcnt"
>
> This is a reland of e2aa734aef
>
> The original change was speculatively reverted in
> https://crrev.com/c/2568925 but seems unrelated to the flakey
> test failures (which are on x64).
>
> Original change's description:
> > [wasm-simd][arm] Prototype i8x16.popcnt
> >
> > Bug: v8:11002
> > Change-Id: Ib97e51ed52249a1af7a4b879396b70a016991719
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567534
> > Commit-Queue: Zhi An Ng <zhin@chromium.org>
> > Reviewed-by: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#71552}
>
> Bug: v8:11002
> Change-Id: I714918e2640d27d29953f940e3bedeb9ea2f8a08
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567243
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71585}

TBR=bbudge@chromium.org,jkummerow@chromium.org,v8-arm-ports@googlegroups.com,zhin@chromium.org

Change-Id: Ib8454a4c20937495c2b83b7ceb3ad594b1b9e7e5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:11002
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2569559
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71586}
2020-12-03 05:19:25 +00:00
Zhi An Ng
d0f7c6a8fa Reland "[wasm-simd][arm] Prototype i8x16.popcnt"
This is a reland of e2aa734aef

The original change was speculatively reverted in
https://crrev.com/c/2568925 but seems unrelated to the flakey
test failures (which are on x64).

Original change's description:
> [wasm-simd][arm] Prototype i8x16.popcnt
>
> Bug: v8:11002
> Change-Id: Ib97e51ed52249a1af7a4b879396b70a016991719
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567534
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71552}

Bug: v8:11002
Change-Id: I714918e2640d27d29953f940e3bedeb9ea2f8a08
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567243
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71585}
2020-12-03 04:26:23 +00:00
Sathya Gunasekaran
f10ef12aa3 Revert "[wasm-simd][arm] Prototype i8x16.popcnt"
This reverts commit e2aa734aef.

Reason for revert:  speculative revert for https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64%20-%20debug/31901/blamelist

Original change's description:
> [wasm-simd][arm] Prototype i8x16.popcnt
>
> Bug: v8:11002
> Change-Id: Ib97e51ed52249a1af7a4b879396b70a016991719
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567534
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71552}

TBR=bbudge@chromium.org,jkummerow@chromium.org,v8-arm-ports@googlegroups.com,zhin@chromium.org

Change-Id: Id1ae2dbaae52d45eb81ba8636178236ca8e9f7e0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:11002
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2568925
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71554}
2020-12-02 07:53:20 +00:00
Zhi An Ng
e2aa734aef [wasm-simd][arm] Prototype i8x16.popcnt
Bug: v8:11002
Change-Id: Ib97e51ed52249a1af7a4b879396b70a016991719
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567534
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71552}
2020-12-02 04:08:49 +00:00
Zhi An Ng
6dbc2b01cf [wasm-simd][arm64] Prototype load lane and store lane
Prototype v128.{load,store}{8,16,32,64}_lane on arm64.

All the required assembler, disassembler, and simulator changes are
already available. The biggest changes here are in the
instruction-selector. ld1 and st1 only supports no-offset or post-index
addressing, so we have to do our own addition (base + index) to
construction the actual memory address to load/store from.

Bug: v8:10975
Change-Id: I026e3075003ff5dece7cd1a590894b09e2e823db
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2558268
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71551}
2020-12-02 04:02:49 +00:00
Zhi An Ng
a57193aeb3 [wams-simd][ia32] Prototype i64x2.eq
Bug: v8:11215
Change-Id: If6e9cb252176230815c7509ecf2a6e3e2269e601
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567532
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71549}
2020-12-02 02:49:59 +00:00
Zhi An Ng
257b266ebf Reland "[wasm-simd][ia32] Prototype store lane"
This is a reland of a69b7ef2ff

Original change's description:
> [wasm-simd][ia32] Prototype store lane
>
> Prototype v128.store{8,16,32,64}_lane on IA32.
>
> Drive by fix for wrong disassembly of movlps.
>
> Also added more test cases for StoreLane, test for more alignment and offset.
>
> Bug: v8:10975
> Change-Id: I0e16f1b5be824b6fc818d02d0fd84ebc0dff4174
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557068
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71511}

Bug: v8:10975
Change-Id: I2c9b219b9ab9d78a83d1bf32ad1271d717471c19
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567317
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71547}
2020-12-02 00:55:08 +00:00
Etienne Pierre-Doray
393782efee Revert "Reland "[wasm]: Use CancelAndDetach and barrier on BackgroundCompileJob.""
This reverts commit 064ee3c835.

Reason for revert: Causing blink_web_tests to fail on builder "WebKit Linux MSAN"
https://bugs.chromium.org/p/chromium/issues/detail?id=1153968

Original change's description:
> Reland "[wasm]: Use CancelAndDetach and barrier on BackgroundCompileJob."
>
> Reason for revert: Data race:
> https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/34121
>
> It was assume that MockPlatform runs everything on 1 thread. However,
> MockPlatform::PostJob previously would schedule the job through
> TestPlatform, which eventually posts concurrent tasks, thus causing
> data race.
> Fix: Manually calling NewDefaultJobHandle and passing the MockPlatform
> ensures the jobs also run sequentially.
>
> Additional change:
> - CancelAndDetach is now called in ~CompilationStateImpl() to make sure
> it's called in sequence with ScheduleCompileJobForNewUnits
>
> Original CL description:
> To avoid keeping around a list of job handles, CancelAndDetach() is
> used in CancelCompilation. Dependency on WasmEngine is handled by a
> barrier that waits on all jobs to finish.
>
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2498659
> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Original-Commit-Position: refs/heads/master@{#71074}
> Change-Id: Ie9556f7f96f6fb9a61ada0e5cbd58d4fb4a0f571
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2559137
> Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71459}

TBR=ulan@chromium.org,jkummerow@chromium.org,ahaas@chromium.org,clemensb@chromium.org,etiennep@chromium.org
Bug: chromium:1153968, v8:11209, v8:11210, v8:11212

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

Change-Id: I2c8406bea81ee7cf6c5726c2fec50fffdce09611
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2566446
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71519}
2020-12-01 09:39:31 +00:00
Liu Yu
581ce5b936 [mips][wasm-simd] Prototype i64x2.bitmask
Port: 9d9e8b41dc

Bug: v8:10997

Change-Id: I147e88d44c65d225ea9f8f27d937fe4b75ff05c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2560538
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#71513}
2020-12-01 03:22:01 +00:00
Zhi An Ng
b6b37b016b Revert "[wasm-simd][ia32] Prototype store lane"
This reverts commit a69b7ef2ff.

Reason for revert: Broke msvc https://ci.chromium.org/p/v8/builders/ci/V8%20Win64%20-%20msvc/15975?

Original change's description:
> [wasm-simd][ia32] Prototype store lane
>
> Prototype v128.store{8,16,32,64}_lane on IA32.
>
> Drive by fix for wrong disassembly of movlps.
>
> Also added more test cases for StoreLane, test for more alignment and offset.
>
> Bug: v8:10975
> Change-Id: I0e16f1b5be824b6fc818d02d0fd84ebc0dff4174
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557068
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71511}

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

Change-Id: Ic9386ea1254c1e0d9b42e92723b1a951fafe3a8b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10975
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567315
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71512}
2020-12-01 02:50:44 +00:00
Zhi An Ng
a69b7ef2ff [wasm-simd][ia32] Prototype store lane
Prototype v128.store{8,16,32,64}_lane on IA32.

Drive by fix for wrong disassembly of movlps.

Also added more test cases for StoreLane, test for more alignment and offset.

Bug: v8:10975
Change-Id: I0e16f1b5be824b6fc818d02d0fd84ebc0dff4174
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557068
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71511}
2020-12-01 02:45:40 +00:00
Zhi An Ng
cd6d819114 [wasm-simd][ia32] Prototype i64x2.bitmask
Bug: v8:10997
Change-Id: I77e3fceec342698e25c8653b6a3dabe0ddbdc045
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557057
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71472}
2020-11-30 04:38:48 +00:00
Zhi An Ng
d0414e876a Reland "[wasm-simd][arm] Prototype i64x2.bitmask"
This is a reland of 21e479441e

The fix is in the encoding of vmov. Bit 23 (the U bit) should be 0,
whether the NeonDataType is NeonS32 or NeonU32. Also added a DCHECK
in the simulator to assert this.

Original change's description:
> [wasm-simd][arm] Prototype i64x2.bitmask
>
> Cleanup to simulator to remove repetitive logic to get instruction
> fields.
>
> Bug: v8:10997
> Change-Id: I01f0b99f85788b41e4cab505fc94362d637c396f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2554256
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71391}

Bug: v8:10997
Change-Id: I93b5d2168a50446d4a3b487ad83d6af8ea9ba8ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2558262
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71467}
2020-11-30 01:53:18 +00:00
Etienne Pierre-doray
064ee3c835 Reland "[wasm]: Use CancelAndDetach and barrier on BackgroundCompileJob."
Reason for revert: Data race:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/34121

It was assume that MockPlatform runs everything on 1 thread. However,
MockPlatform::PostJob previously would schedule the job through
TestPlatform, which eventually posts concurrent tasks, thus causing
data race.
Fix: Manually calling NewDefaultJobHandle and passing the MockPlatform
ensures the jobs also run sequentially.

Additional change:
- CancelAndDetach is now called in ~CompilationStateImpl() to make sure
it's called in sequence with ScheduleCompileJobForNewUnits

Original CL description:
To avoid keeping around a list of job handles, CancelAndDetach() is
used in CancelCompilation. Dependency on WasmEngine is handled by a
barrier that waits on all jobs to finish.

Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2498659
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#71074}
Change-Id: Ie9556f7f96f6fb9a61ada0e5cbd58d4fb4a0f571
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2559137
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71459}
2020-11-27 17:50:15 +00:00
Zhi An Ng
c0c6078aef [wasm-simd][ia32] Prototype load lane
Prototype v128.load{8,16,32,64}_lane on IA32 (stores will come later).

This is pretty similar to x64 version, except that there is no signal
handler for OOB access, so kProtected is not a valid access mode.

Left some TODOs for myself to merge the new instruction codes
(kIA32Pinsrb) with the replace lane Wasm instructions.

Bug: v8:10975
Change-Id: I5c9f9a45e2e7f06e8fab4a28cdfe1857ccc35880
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557063
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71394}
2020-11-25 06:28:02 +00:00
Zhi An Ng
063ee2349a Revert "[wasm-simd][arm] Prototype i64x2.bitmask"
This reverts commit 21e479441e.

Reason for revert: Broke build https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/16872?

Original change's description:
> [wasm-simd][arm] Prototype i64x2.bitmask
>
> Cleanup to simulator to remove repetitive logic to get instruction
> fields.
>
> Bug: v8:10997
> Change-Id: I01f0b99f85788b41e4cab505fc94362d637c396f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2554256
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71391}

TBR=bbudge@chromium.org,jkummerow@chromium.org,v8-arm-ports@googlegroups.com,zhin@chromium.org

Change-Id: I15513cc5923db7d189d08a9faf5051e57af7190b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10997
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2558260
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71393}
2020-11-25 04:55:56 +00:00
Zhi An Ng
21e479441e [wasm-simd][arm] Prototype i64x2.bitmask
Cleanup to simulator to remove repetitive logic to get instruction
fields.

Bug: v8:10997
Change-Id: I01f0b99f85788b41e4cab505fc94362d637c396f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2554256
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71391}
2020-11-25 03:35:42 +00:00
Zhi An Ng
7f770766d8 [wasm-simd][arm64] Prototype prefetch arm64
Prototype 2 prefetch instructions (temporal and non-temporal) on arm64
and interpreter.

Add prfm to assembler, and use MiscField to encode the two versions.
Small tweak to simulator to handle these new instructions (no-op).

The implementation in the interpreter just pops the memory index and
does nothing.

Simple test cases added for these 2 new instructions, as well as a
prefetch with OOB index, which should not trap.

Bug: v8:11168
Change-Id: Ieced8081615d07f950d6d4c1128d1bc6a75839fd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2543167
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71353}
2020-11-24 02:44:09 +00:00
Zhi An Ng
9d9e8b41dc [wasm-simd][arm64] Prototype i64x2.bitmask
Drive-by cleanup for other bitmask instructions to
UseScratchRegisterScope instead of using temporary registers in
instruction-selector.

Bug: v8:10997
Change-Id: Id46d249fd20ceaeab8e867babec8b34d7995c17f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2548081
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71351}
2020-11-24 01:20:09 +00:00
Etienne Pierre-doray
686e48b2f8 [test]: Fix streaming-compilation MockTaskRunner synchronisation.
MockTaskRunner is missing a lock to protect tasks queue, causing flaky
tsan. This is similar to:
https://source.chromium.org/chromium/chromium/src/+/master:v8/test/cctest/wasm/test-wasm-metrics.cc;l=94?q=test%2Fcctest%2Fwasm%2Ftest-wasm-metrics.cc&ss=chromium

Previous CL https://chromium-review.googlesource.com/c/v8/v8/+/2507379
probably revealed the issue to TSAN by bringing more tasks.

Bug: v8:11194
Change-Id: Ib45c4afb4e7a86c9b4a54518876e311598747919
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2555383
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71346}
2020-11-23 19:23:01 +00:00
Manos Koukoutos
051a29cceb [wasm-gc] Implement JS roundtrip for anyref
We use the same temporary mechanism as with eqref, in anticipation of
standardization of the wasm-gc JS API.

Bug: v8:7748
Change-Id: I224a043e5450ce489fc7f3b2f07f277a0444b8e0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546695
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71339}
2020-11-23 14:18:31 +00:00
Leszek Swirski
f47e59e045 [asserts] Make assert scopes LocalHeap friendly
Because of LocalHeap safepoints, our existing assert scopes don't
necessarily maintain the same guarantees as desired. In particular,
DisallowHeapAllocation no longer guarantees that objects don't move.

This patch transitions DisallowHeapAllocation to
DisallowGarbageCollection, to ensure that code using this scope is
also protected against safepoints.

Change-Id: I0411425884f6849982611205fb17bb072881c722
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2540547
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71319}
2020-11-20 17:39:14 +00:00
Zhi An Ng
e90623b691 [wasm-simd] Add OOB tests for v128.load and v128.store
We had some tests, but weren't checking for OOB. Add some tests.

Change-Id: I63d4d199fe8b7be51a8e0a5a2d9b3a328e5d7ab5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2546127
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71302}
2020-11-20 01:31:48 +00:00
Thibaud Michaud
ec3141994a [wasm] Deserialization: copy and relocate in the background
Deserialization is currently split into three main steps:
1) Read code and allocate code buffer
2) Copy and relocate code
3) Publish

This moves step 2) to a background task so that it can concurrently
process work units added to the work queue by step 1).

Next, step 3) will also be moved to a background task to create a full
pipeline, such that we can start publishing the first units almost
immediately.

R=ahaas@chromium.org
CC=​​clemensb@chromium.org

Bug: v8:11164
Change-Id: I99919765400e03737a46bacf0dcd82cb7fe2aefc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2543932
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71290}
2020-11-19 18:36:07 +00:00
Manos Koukoutos
ba5fa195ed [wasm-gc] Implement anyref
Bug: v8:7748
Change-Id: I5d0cc06fafbe7fc05549a4b8fd7f602eaf838bba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2526382
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@{#71283}
2020-11-19 15:38:57 +00:00
Milad Fa
4933ecc202 [wasm-gc] Fix kLongLength to account for larger page sizes
Change-Id: Ie09b35d2e2cd28996bb7ebaa54175c14a4f5cea8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2543162
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#71234}
2020-11-17 14:22:22 +00:00
Vicky Kontoura
8b7a837b71 [wasm] Add cctest for indirect js-to-wasm calls
This CL adds a cctest to verify that the tiering strategy for the
js-to-wasm wrappers works for functions that are only indirectly
exported through exported tables.

Bug: v8:10982
Change-Id: I8eede14ab620dbadb75af42b78bfac88230a6dd3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2536644
Commit-Queue: Vicky Kontoura <vkont@google.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71227}
2020-11-17 11:59:46 +00:00
Vicky Kontoura
b777c1f9d2 [wasm] [cleanup] Refactor cctest
This CL just refactors the `test-run-wasm-wrappers.cc` cctest.

Bug: v8:10982
Change-Id: Ib8881c97c0cf395766d9b27a68ee440850df5d59
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2534819
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Vicky Kontoura <vkont@google.com>
Cr-Commit-Position: refs/heads/master@{#71222}
2020-11-17 09:12:22 +00:00
Zhi An Ng
9b4514222e [wasm-simd][scalar-lowering] Fix replacement for call nodes
all_true, any_true, bitmask, and extract_lane all replace a simd type
with single scalar, so we don't need to set nullptr for the extraneous
lane, and can set num_lanes to 1.

So for a call node with any of the above nodes as one of its value, we
were incorrectly replacing the extract lane node with 4 nodes - it
should only be 1 scalar node.

Drive by fix for LowerShift, it needs to check if the shift value node
has replacement (e.g. if it is an extract lane node).

Also we weren't setting the lowered type of a kPhi node. This can be a
problem if the output of a Phi node is used by a F32x4ExtractLane and
I32x4ExtractLane, which is possible (and type correct since both take
v128). This will require that the output be both a float and a int,
which is impossible. So fix it to Int32x4, and the uses of the phi nodes
will convert appropriately.

Added a test for the call node. Also tested this code by running one of
our benchmarks, which exercises the Phi logic.

Bug: v8:10507
Change-Id: I01a76b349ba9d0e157b64e737bdb4c70f96aa954
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2536952
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71218}
2020-11-17 02:38:57 +00:00
Zhi An Ng
d8c8efecc4 [wasm-simd] Enable lowering for select test
With more of scalar lowering implemented, this test can now run with
lowering. The only other tests that skip lowering are prototype
instructions.

Bug: v8:10507
Change-Id: Ia149956d2d406b6f76eb9155765474c23b89b894
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2507317
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71215}
2020-11-17 01:50:11 +00:00
Zhi An Ng
bebe54828e [wasm-simd][scalar-lowering] Set lowered types for S128Select S128AndNot
S128Select and S128AndNot relies on the inputs being lowered to I32x4,
since they use Word32Xor, but it wasn't correctly specified. This means
that by default, their lowered type was set to be the output's lowered
type. If the result of these operations were used by F32x4ExtractLane,
then their lowered type will be set to Float32x4, so the inputs will be
lowered to Float32x4, and we get incorrect type of registers allocated.

Bug: v8:10507
Change-Id: I16dc7f2dcdaf2188997ff345a6b0fd22e10b7b36
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2536953
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71214}
2020-11-17 01:48:21 +00:00
Jakob Kummerow
7e533de10e [wasm-gc] Fix several bugs
- allow arrays to be allocated in LargeObjectSpace
- check requested array allocation length against maximum
- fix array element offsets for pointer-typed elements
- fix GC handling of arrays when there are forwarding pointers
- module builder: fix rtt.sub global initializer expressions
- debug printing: print "UNIMPLEMENTED" instead of crashing
- WasmGCTester: make some exceptions easier to diagnose

Bug: v8:7748, chromium:1141376
Change-Id: Ie0281658748f3dd5e5d90d85bab78f0ea2fc3865
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2534815
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71208}
2020-11-16 14:57:00 +00:00
Vicky Kontoura
eb0ef4d7c8 [wasm] Reverse count logic for the tiering of js-to-wasm wrappers
This CL reverses the count logic for the tiering strategy of the
js-to-wasm wrappers. The initial approach was that calls to each
function were counted up, until a threshold was reached and the function
would tier up. With this CL, each function is assigned a budget of calls
that can be handled through the generic wrapper. Calls are counted down
until the budget is exhausted, which will trigger the tier-up
for the function.

This approach comes with two advantages. Firstly, determining whether
a function's budget is exhausted is as simple as checking the flags set
from the decrement of the budget. Secondly, the code generated by the
generic wrapper does not depend on the specific value of the initial
budget.

Bug: v8:10982
Change-Id: I5e186c6cf836a9c197b41d0f7ad075b07c87a4da
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2532300
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Vicky Kontoura <vkont@google.com>
Cr-Commit-Position: refs/heads/master@{#71153}
2020-11-12 14:31:25 +00:00
Vicky Kontoura
a7ba1705cf [wasm] Replace the js-to-wasm wrapper eagerly for all matching functions
This CL aims at avoiding compilation of the same js-to-wasm wrapper
multiple times by iterating over all exported functions in the export
table and replacing the wrapper for all functions that share the same
signature with the function that tiered up.

Bug: v8:10982
Change-Id: I721de2f48844349de8a5d12f512a74957c66a0e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2527082
Commit-Queue: Vicky Kontoura <vkont@google.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71103}
2020-11-11 09:35:47 +00:00
Zhi An Ng
1c7bcc8b22 [scalar-lowering] Implement lowering for load zero
Bug: v8:11038
Change-Id: Ia8b8c1c438d67ccfe5f27c452852c0f096062f56
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2503877
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71069}
2020-11-10 02:39:44 +00:00
Zhi An Ng
062ba7e78f [wasm-simd][arm64] Prototype extended pairwise additions
Prototype i32x4.extadd_pairwise_i16x8_{s,u} and
i16x8.extadd_pairwise_i8x16{s,u} (names not confirmed) on ARM64 and
interpreter. With a simple test case.

Bug: v8:11086
Change-Id: If1ffc04e179e86ca5cc209bf9ef9d337298e3cc2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2513872
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71068}
2020-11-10 02:19:04 +00:00
Sara Tang
c9e883e803 (Step 1 of 2): Prepping Wasm events in the Recorder interface
As part of an effort to prepare the Recorder interface for general use,
we had to make some changes to the way the existing Wasm Events are
being used. In particular,
  - it is more fitting to use a ElapsedTimer than a TimedScope to
    measure the durations in src/wasm/module-[decoder|instantiate].cc
  - we want to rename the wall_clock_time_in_us field to duration_in_us
    for clarity.

Because these Wasm events are already being instantiated in chromium,
renaming the field requires a two-step change. This is the first of
those changes.

Change-Id: If1b2990f7645616a59fc21d07ac10bf00701c0e5
Bug: v8:11109
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2518619
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Emanuel Ziegler <ecmziegler@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71053}
2020-11-09 15:29:14 +00:00
Etienne Pierre-doray
b6d1fc1669 [test] Fix platform lifetime in test-streaming-compilation
Currently MockPlatform has shorter lifetime than the isolate that uses
it. Creating isolate before MockPlatform leads to races in concurrent
tasks that were scheduled before the MockPlatform replaced the default
TestPlatform. This caused issues after landing
https://chromium-review.googlesource.com/c/v8/v8/+/2502808

This CL ensures that MockPlatform is valid throughout the whole
lifetime of the isolate

Change-Id: Ia888fba93819ea98b935a1d36307d98dd358fcad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2507379
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70950}
2020-11-03 15:06:26 +00:00
Zhi An Ng
71733d2891 [wasm-simd] Clean up test-run-wasm-simd
IWYU some headers, remove/inline helpers that were only used once.

Bug: v8:11074
Change-Id: I3e3d7e22b56e77076f1a2faac07ca727fb6e4f46
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2513871
Reviewed-by: Ben Smith <binji@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70931}
2020-11-03 00:18:28 +00:00
Etienne Pierre-doray
4fb053d847 [Jobs API] Rename !IsCompleted -> IsActive
IsCompleted is backwards. For a more consistent api, the function is
renamed IsActive and logic is flipped.
Following up on https://chromium-review.googlesource.com/c/v8/v8/+/2461840
The intend is to make the distinction between IsActive and IsValid obvious.

Change-Id: Iaf00b9f6ffa8f1efe93ae29f09899737ef20f04d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2510969
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70901}
2020-10-30 19:57:38 +00:00
Zhi An Ng
f1a8d143c2 Reland "[wasm-simd] Add more test cases for load lane"
This is a reland of df34fb9534

Original change's description:
> [wasm-simd] Add more test cases for load lane
>
> Test load lane using memarg offset immediate, and also test all
> supported alignments.
>
> Bug: v8:10975
> Change-Id: Iac7e9f7e335bd86528a8723b04df97a17d7a7f66
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2500928
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70816}

TBR=bbudge@chromium.org

Bug: v8:10975
Change-Id: I286776b351ecd3c78d56bec20c02a3ba283213df
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2504851
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70820}
2020-10-28 05:15:27 +00:00
Zhi An Ng
b0d7912042 [wasm-simd][x64] Prototype sign select
Prototype i8x16, i16x8, i32x4, i64x2 sign select on x64 and interpreter.

Bug: v8:10983
Change-Id: I7d6f39a2cb4c2aefe31daac782978fe8b363dd1a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2486235
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70818}
2020-10-28 03:32:57 +00:00
Zhi An Ng
fd12dfb913 Revert "[wasm-simd] Add more test cases for load lane"
This reverts commit df34fb9534.

Reason for revert: Broke msvc compile https://ci.chromium.org/p/v8/builders/ci/V8%20Win64%20-%20msvc/15566

Original change's description:
> [wasm-simd] Add more test cases for load lane
>
> Test load lane using memarg offset immediate, and also test all
> supported alignments.
>
> Bug: v8:10975
> Change-Id: Iac7e9f7e335bd86528a8723b04df97a17d7a7f66
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2500928
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70816}

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

Change-Id: Ia80d167846dac99070e6e9d280dd4ea53455af30
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:10975
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2504850
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70817}
2020-10-28 01:03:10 +00:00
Zhi An Ng
df34fb9534 [wasm-simd] Add more test cases for load lane
Test load lane using memarg offset immediate, and also test all
supported alignments.

Bug: v8:10975
Change-Id: Iac7e9f7e335bd86528a8723b04df97a17d7a7f66
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2500928
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70816}
2020-10-28 00:27:41 +00:00
Ng Zhi An
e6d96d2329 [wasm-simd] Move v128 load32_zero load64_zero out of post-mvp
And remove all ifdefs guarding the tests.

Bug: v8:11038
Change-Id: I91487a4bd60b6f2e327d1c2348289e446d6e93d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2501967
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70811}
2020-10-27 23:21:46 +00:00
Zhi An Ng
07371c5252 Reland "Add int64_t min and max to value helpers for test"
This is a reland of dde9376860

Original change's description:
> Add int64_t min and max to value helpers for test
>
> And also fix up a truncate float to int test that was using
> int list as input instead of a float list.
>
> Change-Id: I544e38b2d212f8d11dfb5758db4fe6b283acae0d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2419654
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70774}

Change-Id: Id196ea40eaf616d784d644346b912f1561fd97a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2500926
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70810}
2020-10-27 23:20:41 +00:00
Zhi An Ng
9124b7f973 [wasm-simd][arm] Implement v128.load32_zero v128.load64_zero
Implement these two instructions on arm.

Bug: v8:11038
Change-Id: I23d9c7291f60e29415cfbebced1bff323fd2465a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2485250
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70779}
2020-10-27 04:02:46 +00:00
Zhi An Ng
7cb8b191bf Revert "Add int64_t min and max to value helpers for test"
This reverts commit dde9376860.

Reason for revert: ubsan failures https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/13518

Original change's description:
> Add int64_t min and max to value helpers for test
>
> And also fix up a truncate float to int test that was using
> int list as input instead of a float list.
>
> Change-Id: I544e38b2d212f8d11dfb5758db4fe6b283acae0d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2419654
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70774}

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

Change-Id: If0faa8be8c55715a529dfe777c0ad9819105fc5b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2500925
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70777}
2020-10-27 03:02:43 +00:00