Commit Graph

661 Commits

Author SHA1 Message Date
Adam Klein
76ae4f56df [cleanup] Remove Wasm exception-handling runtime flag
It's been enabled by default since Chromium M95.

Also removes duplicate setup code for WebAssembly.Tag JS API
from WasmJs::InstallConditionalFeatures, since we're guaranteed
to set it up via the non-conditional WasmJs::Install.

Bug: v8:8091
Change-Id: Ic500feb655ad4fc0703ed226504847ca6d940537
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3996810
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#84074}
2022-11-04 22:50:50 +00:00
Matthias Liedtke
8852999115 [fuzzer][wasm] Allow struct.new_default for structs with immutable fields
This is a follow-up to commit d1a11dd15a.
This reverts commit 9182c028c1.

Change-Id: I4555f329314955e6a4a40dd40e22dc12a570c89e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3986086
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83952}
2022-10-27 11:23:42 +00:00
Clemens Backes
35cc93aa42 [wasm] Detemplatize immediates
The wasm decoder immediates are currently templatized by the {validate}
enum value. They do not need to be though; the only difference is in the
constructor, so the constructor should be templatized instead.

This CL implements that, and also changes the {validate} enum to be a
tag (a typename) instead. This is needed in order to enable template
parameter deduction for the constructor calls (C++ does not allow to
explicitly define the template parameter at constructor calls).

As a nice side effect, this produces nicer symbolized stack traces.
Before:
v8::internal::wasm::Decoder::read_u32v<(v8::internal::wasm::Decoder::ValidateFlag)1>
After:
v8::internal::wasm::Decoder::read_u32v<v8::internal::wasm::Decoder::BooleanValidationTag>

R=jkummerow@chromium.org

Change-Id: I013c909ebaf2c8c495f32b5ce598905f3eccc3ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3973267
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83889}
2022-10-24 17:27:49 +00:00
Adam Klein
9e55d25735 [cleanup] Remove Wasm SIMD flag & deprecate embedder-enabling API
It's been enabled by default since Chrome 91.

Bug: v8:6020
Change-Id: Id26b7fb0b7dffe19a88a6f0071dd59203b06415a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3957636
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83862}
2022-10-22 00:47:42 +00:00
Clemens Backes
444e6e3482 Reland "[flags] Remove FLAG_* aliases"
This is a reland of commit e3096c31d6.
The one additional use of FLAG_turboshaft is also rewritten now.

Original change's description:
> [flags] Remove FLAG_* aliases
>
> This removes the deprecated FLAG_* aliases, and switches remaining uses
> to the new v8_flags syntax.
>
> R=jkummerow@chromium.org
>
> Bug: v8:12887
> Change-Id: Icde494a3819a9b1386c91e44f5d72a55666d9eae
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952350
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83686}

Bug: v8:12887
Change-Id: I978df89f51e11c9a101ff3c1e385b1eced697a74
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3953292
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83717}
2022-10-14 13:13:55 +00:00
Matthias Liedtke
d4a3ebeb2b Reland "Reland "[wasm-gc] Ref types: Convert dataref to structref""
This is a reland of commit 3b883e787d

Fixed a test case that was merged in the meantime still using the old
kExprRefAsData which is now called kExprRefAsStruct.

Original change's description:
> Reland "[wasm-gc] Ref types: Convert dataref to structref"
>
> This is a reland of commit 20327d1599
>
> Changed in reland:
> - Added new flag wasm-gc-structref-as-dataref which defaults to true
>   and preserves the existing behavior.
> - Passing --no-wasm-gc-structref-as-dataref enables the new behavior.
> - The flag affects static subtyping information between structref and
>   arrays and the corresponding cast, test and br_on instructions.
> - Even with the old behavior the name still changed to "structref".
>
> Original change's description:
> > [wasm-gc] Ref types: Convert dataref to structref
> >
> > This change changes the type hierarchy in a non-backwards compatible
> > way: dataref is replaced with structref meaning that arrayref is
> > no longer a subtype of it.
> >
> > Bug: v8:7748
> > Change-Id: I965267d9ed11ea7c7d7df133cc39ee63e6b5abc3
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3929041
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#83515}
>
> Bug: v8:7748
> Change-Id: I2d8dd49dbc56246c087ac93452a87f860ead2195
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3945109
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83697}

Bug: v8:7748
Change-Id: I54f7b141ffc5b7597420fa0c838412be825a260b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952936
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83706}
2022-10-14 09:32:25 +00:00
Jakob Kummerow
8aa6006533 Revert "Reland "[wasm-gc] Ref types: Convert dataref to structref""
This reverts commit 3b883e787d.

Reason for revert: gc-optimizations test is broken due to in-flight collision with another CL: https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket/8800403395649311857/+/u/Check/gc-optimizations

Original change's description:
> Reland "[wasm-gc] Ref types: Convert dataref to structref"
>
> This is a reland of commit 20327d1599
>
> Changed in reland:
> - Added new flag wasm-gc-structref-as-dataref which defaults to true
>   and preserves the existing behavior.
> - Passing --no-wasm-gc-structref-as-dataref enables the new behavior.
> - The flag affects static subtyping information between structref and
>   arrays and the corresponding cast, test and br_on instructions.
> - Even with the old behavior the name still changed to "structref".
>
> Bug: v8:7748
> Change-Id: I2d8dd49dbc56246c087ac93452a87f860ead2195
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3945109
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83697}

Bug: v8:7748
Change-Id: Icb273a6d433c47a372563d0daf68725c6c5b15e3
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952514
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#83698}
2022-10-13 16:55:15 +00:00
Matthias Liedtke
3b883e787d Reland "[wasm-gc] Ref types: Convert dataref to structref"
This is a reland of commit 20327d1599

Changed in reland:
- Added new flag wasm-gc-structref-as-dataref which defaults to true
  and preserves the existing behavior.
- Passing --no-wasm-gc-structref-as-dataref enables the new behavior.
- The flag affects static subtyping information between structref and
  arrays and the corresponding cast, test and br_on instructions.
- Even with the old behavior the name still changed to "structref".

Original change's description:
> [wasm-gc] Ref types: Convert dataref to structref
>
> This change changes the type hierarchy in a non-backwards compatible
> way: dataref is replaced with structref meaning that arrayref is
> no longer a subtype of it.
>
> Bug: v8:7748
> Change-Id: I965267d9ed11ea7c7d7df133cc39ee63e6b5abc3
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3929041
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83515}

Bug: v8:7748
Change-Id: I2d8dd49dbc56246c087ac93452a87f860ead2195
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3945109
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83697}
2022-10-13 16:19:14 +00:00
Clemens Backes
54543299e5 Revert "[flags] Remove FLAG_* aliases"
This reverts commit e3096c31d6.

Reason for revert: In-flight collision (new usage of FLAG_turboshaft): https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Android%20Arm%20-%20builder/48026/overview

Original change's description:
> [flags] Remove FLAG_* aliases
>
> This removes the deprecated FLAG_* aliases, and switches remaining uses
> to the new v8_flags syntax.
>
> R=​jkummerow@chromium.org
>
> Bug: v8:12887
> Change-Id: Icde494a3819a9b1386c91e44f5d72a55666d9eae
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952350
> Reviewed-by: Maya Lekova <mslekova@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83686}

Bug: v8:12887
Change-Id: I7688143bde2c5890842fc6362e3f569f172f68b0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952594
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83689}
2022-10-13 14:09:58 +00:00
Clemens Backes
e3096c31d6 [flags] Remove FLAG_* aliases
This removes the deprecated FLAG_* aliases, and switches remaining uses
to the new v8_flags syntax.

R=jkummerow@chromium.org

Bug: v8:12887
Change-Id: Icde494a3819a9b1386c91e44f5d72a55666d9eae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3952350
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83686}
2022-10-13 14:01:32 +00:00
Clemens Backes
fb3321ea27 [wasm] Store local types in a plain array
After the let instruction was removed again, the number and types of
locals stays constant throughout the decoding of a function. Hence store
it in a plain array instead of a ZoneVector. This makes the decoder
smaller and saves bounds checks for the "safe libc++".

R=thibaudm@chromium.org

Bug: chromium:1358853
Change-Id: Iad69aa0cfdc254710e1c2219cfb2c972241ef473
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3944929
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83671}
2022-10-13 09:24:42 +00:00
Matthias Liedtke
661f0220c7 Revert "[wasm-gc] Ref types: Convert dataref to structref"
This reverts commit 20327d1599.

Reason for revert: The code for structref/dataref is in use in
combination with array types, so the change breaks their use cases.
Reverting to restore the previous semantics of dataref.

Original change's description:
> [wasm-gc] Ref types: Convert dataref to structref
>
> This change changes the type hierarchy in a non-backwards compatible
> way: dataref is replaced with structref meaning that arrayref is
> no longer a subtype of it.
>
> Bug: v8:7748
> Change-Id: I965267d9ed11ea7c7d7df133cc39ee63e6b5abc3
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3929041
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83515}

Bug: v8:7748
Change-Id: I2a0bcafafe6f67df87aac86813f74573b708cce4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3936156
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#83544}
2022-10-05 16:48:37 +00:00
Matthias Liedtke
20327d1599 [wasm-gc] Ref types: Convert dataref to structref
This change changes the type hierarchy in a non-backwards compatible
way: dataref is replaced with structref meaning that arrayref is
no longer a subtype of it.

Bug: v8:7748
Change-Id: I965267d9ed11ea7c7d7df133cc39ee63e6b5abc3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3929041
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83515}
2022-10-04 12:51:17 +00:00
Manos Koukoutos
cab9ad05dc [wasm] Documentation and small cleanups
Change-Id: Ia3ef956926b54add138936e3e7d03a0faa457ff9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3913127
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83422}
2022-09-26 11:44:48 +00:00
Manos Koukoutos
45d4d220d2 [wasm] Move js-to-wasm wrappers to the isolate
We move js-to-wasm wrappers to a WeakFixedArray in the isolate,
indexed by their canonical type index. This ensures that they are
reused across instances, and get GC'd when no longer needed.
We also remove eager compilation of wrappers.
This CL fixes some issues that were caused by out-of-bounds accesses
to wrapper arrays attached to module objects.

Bug: chromium:1363859, chromium:1363895

Change-Id: Idec0925e775f51fdfa7cd380379b0d1798295a0c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3893860
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83275}
2022-09-16 15:08:53 +00:00
Clemens Backes
5f00755c81 [flags] Disable hard-abort when fuzzing
Running the libfuzzer fuzzers locally (with an experimental flag turned
on) found crashes, but did not produce crash files because we were
generating a software interrupt ("trap") instead of properly aborting.
Disabling the "hard-abort" feature fixes that.

This will hopefully not flush out previously missed crashes. If so,
please do manually bisect across this CL, instead of assigning to me :)

Drive-by: Move more initialization logic from {InitializeFuzzerSupport}
to the {FuzzerSupport} constructor, where other similar work is
performed.

R=thibaudm@chromium.org, saelo@chromium.org

Bug: v8:13283
Change-Id: Id8d4e92f5ab6bb27676adeae6b3b1eb042b8ba3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3892061
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Samuel Groß <saelo@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83208}
2022-09-15 09:48:48 +00:00
Patrick Thier
5d4567279e [regexp] Add v-Flag for Unicode Sets
- Add v-flag and corresponding prototype getters.
- Update RegExp builtins fuzzer to handle two-byte flags.
- Update test262 status.

Bug: v8:11935
Change-Id: If649ebfacf1f933f3ae5c770c2240470a8b460ee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3868952
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83003}
2022-09-06 17:51:56 +00:00
Jakob Kummerow
adbc694a7c [wasm-gc][fuzzer] Fix call_ref with immediate
Use the correct helper function to emit an immediate.

Fixed: chromium:1358909
Change-Id: I2f2ae7819f40009b3f9c22067cdf11885d3347ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3869265
Reviewed-by: Matthias Liedtke <mliedtke@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82924}
2022-09-02 08:07:32 +00:00
Matthias Liedtke
ad6b1249bb [fuzzer][wasm-gc] Fix fuzzer for array-len without type immediate
Fix for 75391be247.
The fuzzer should not generate type immediates for the new array len
opcode. As the old opcode was renamed in C++, the fuzzer switched to the
new opcode automatically.

Bug: v8:7748
Change-Id: Ife2d420e8ce5486f683f00bfff168f47745a86d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3866171
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82842}
2022-08-30 19:34:11 +00:00
Jakob Kummerow
6168782925 [wasm-gc] call_ref: consume a type immediate
Per https://github.com/WebAssembly/function-references/pull/76,
call_ref and return_call_ref should consume type immediates specifying
the signature of the funcref. This is a breaking change.

To ease the migration, this patch introduces a temporary alternative
binary encoding for call_ref:
- 0x14 continues to *not* take a type immediate for now.
- 0x17 (formerly "let") is the new call_ref *with* type immediate. Module
  producers are encouraged to emit this encoding ASAP.
- After a few weeks of transitionary period, we'll update 0x14 to
  take a type immediate as well. At this point, module producers will be
  encouraged to switch back to 0x14.
- After a few more weeks of transitionary period, we'll drop 0x17 again.

We're not doing the same dance for return_call_ref because it currently
has no uses that we know of.

Bug: v8:7748,v8:9495
Change-Id: Id8d468be3949f84571efff713c937ffd1addff70
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3863280
Reviewed-by: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82839}
2022-08-30 17:51:49 +00:00
Clemens Backes
c497701814 [wasm] Use v8_flags for accessing flag values
Avoid the deprecated FLAG_* syntax, access flag values via the
{v8_flags} struct instead.

R=jkummerow@chromium.org

Bug: v8:12887
Change-Id: Ieccf35730f69bcefa3740227f15e05686080d122
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3843517
Auto-Submit: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82774}
2022-08-29 12:43:46 +00:00
Matthias Liedtke
8600d58092 [wasm-gc] Rename array.new_fixed_static -> array.new_fixed
This is a left-over of the removal of the dynamic (rtt-based)
variants.

Bug: v8:7748
Change-Id: I93bb74a72543a5697f1102d283c7d65c6be99466
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3856577
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82746}
2022-08-26 13:11:38 +00:00
Matthias Liedtke
fed595d97c [fuzzer][wasm-gc] Add types nullfuncref, nullexternref and nullref
nullfuncref = ref null nofunc
nullexternref = ref null noextern
nullref = ref null none

Bug: v8:7748
Change-Id: Ia54ac52c81bde4315e2d6819cff032cb739216c7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3820064
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82425}
2022-08-12 08:17:29 +00:00
Jakob Kummerow
e441e21260 [stringrefs] Switch GC prefix decoding to LEB
So far, we decoded instructions with the 0xFB prefix as two-byte, i.e.
a single "u8" byte following the prefix.
This patch changes that to 0xFB + LEB, which is how all prefixed
instructions are supposed to do it. Currently this makes a difference
only for the stringref proposal (instructions 0x80 through 0xb3).

It has the unfortunate consequence that all stringref instructions need
three bytes for now. We expect them to go back to a two-byte encoding
scheme (while remaining LEB compliant) when their final encoding is
decided.

Bug: v8:12868
Change-Id: I603f60adae88e9b985cb65288d9eeb7f98da8138
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3825887
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82400}
2022-08-11 14:07:13 +00:00
Matthias Liedtke
2f80efbe9c [fuzzer][wasm-gc] Fix fuzzer as func is not a subtype of any any more
Bug: chromium:1351242
Change-Id: I3805c53e3103d105754474a48a94fa0888c635f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3820062
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82312}
2022-08-09 15:55:43 +00:00
Matthias Liedtke
58e6088d62 [fuzzer][wasm] Use externref in structs, locals and signatures
Change-Id: I57c805b899a25e58035f2ed9accd10e43114fd80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802689
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82112}
2022-08-01 15:48:02 +00:00
Matthias Liedtke
9182c028c1 [fuzzer][wasm] Fix struct.new_default for immutable structs
struct.new_default may not be called for immutable structs.
Follow-up to d2c75d321e.

Change-Id: I7b682938ca5da00ef6c9bec29856133301beb6b4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802688
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82108}
2022-08-01 15:00:34 +00:00
Matthias Liedtke
3decc4bb4a [fuzzer] Fix fuzzer handling for table<externref>
Table<any> is not allowed any more and may therefore not be generated by
the fuzzer. Instead, the new type is table<externref>.

Bug: chromium:1348437
Change-Id: Ibf788222fc777508e59178db48e6497a18b250d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3793610
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82073}
2022-07-29 12:10:49 +00:00
Matthias Liedtke
9c73f61ada [wasm-gc] Split any and extern type
Bug: v8:7748
Change-Id: Ifd4caec2015894f736dd94356298f6ee35ac852b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3779911
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82035}
2022-07-28 13:09:55 +00:00
Clemens Backes
d261567f25 [wasm][fuzzer] Make ClusterFuzz recognise OOM exceptions
Sometimes the second Wasm instantiation fails because we run out of
memory. This raises a RangeError, which is not recognized by ClusterFuzz
as OOM.
Thus turn it into a proper OOM crash.

R=ahaas@chromium.org

Bug: chromium:1347024
Change-Id: I39f7789cc85a9ba9b4217764fbbcef15c6c6ed76
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3784602
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81920}
2022-07-25 12:29:56 +00:00
Matthias Liedtke
48ae9bb6c9 [wasm-gc] Remove obsolete RTT statements from internal processing
This is a follow up to Iadf73c294904ec20cefe1053a2969aa1dbb91a39.

Bug: v8:7748
Change-Id: I59390b8c82c4ebed58f2d3130cd9b1578bffdd4b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3780535
Commit-Queue: Matthias Liedtke <mliedtke@google.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@google.com>
Cr-Commit-Position: refs/heads/main@{#81908}
2022-07-25 08:19:36 +00:00
Peter Kasting
1013ce9e59 Make CompilationResult an aggregate in C++20.
Bug: chromium:1284275
Change-Id: Id429806b802282b7b045628fd8a3371618eb9f7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3774123
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81842}
2022-07-20 08:20:27 +00:00
Manos Koukoutos
2a0584bfe8 [test] Remove some unused includes (2)
Mostly test/fuzzer, test/inspector, test/unittests.

Bug: v8:13006
Change-Id: I825efa5d72a224bb3cb9f86a9fac8763e9dbd1cf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3769696
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81799}
2022-07-19 08:55:55 +00:00
Thibaud Michaud
0d185854ed [wasm][fuzzer] Disable tail-call fuzzing
Until crbug.com/1269989 is completely resolved.

R=clemensb@chromium.org

Bug: chromium:1269989
Change-Id: I35f6278425857d727ea99470d9531fd70a58a3c0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3769692
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81784}
2022-07-18 15:59:03 +00:00
Liviu Rau
b3477fdd01 [test] Refactor testrunner (4)
- Removed duplication and unnecessary indirection from all suites testcfgs.
 - Introduced a more comprehensive context to cover both command context and other platform specific concerns.
 - Propagated above context to TestLoader to allow for test counting command execution on all platforms.
 - Wrapped original pool with another class to give it a new interface and allow injecting different implementations in the future.
 - Consolidated progress indicators under a single processor in the pipeline.
 - Consolidated result retention requirements calculation outside of pipeline chain.
 - Refactored LoaderProc and got it under tests.
 - Added some more tests for the standard runner.
 - Extracted BuildConfig class.


Bug: v8:12785
Change-Id: I87be040e91f792a983662bb5a10d55b36a14ea7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3701595
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81770}
2022-07-18 09:52:24 +00:00
Samuel Groß
f3737bbb12 [sandbox] Initialize sandbox during V8::Initialize
As sandboxed pointers are now default-enabled when the sandbox is
enabled, it is no longer possible to deactivate the sandbox at runtime.
This CL therefore removes all the logic that was required to support a
sandbox that could be disabled at runtime, moves the initialization of
the sandbox into V8::Initialize, and deprecates V8::InitializeSandbox.

This change also makes the sandbox initialization deterministic if
FLAG_random_seed is supplied.

Bug: v8:10391
Change-Id: Ibd49f7c251b7c58c642f18a551ecc2c391740970
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3762583
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81746}
2022-07-15 09:29:32 +00:00
Clemens Backes
5078eea1ce [wasm] Limit module size in streaming decoder
Limit the allowed module size in the streaming decoder to 256kiB to
avoid OOMs on systems that are very memory constained (32-bit ASan
builds).

Drive-by: Skip linting wasm fuzzer input files, as those are binary
files.

R=ahaas@chromium.org

Bug: chromium:1334577, chromium:1337558
Change-Id: Ie5599088fd25c0bc7c8f9f1a953d31fe61a21844
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3700073
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81602}
2022-07-08 09:43:41 +00:00
Manos Koukoutos
32e6b48fca Reland "Remove some unused includes"
This is a reland of commit 2d74bfa4a0

Difference compared to original: Restore one needed include.

Original change's description:
> Remove some unused includes
>
> Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.
>
> Bug: v8:13006
> Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81523}

Bug: v8:13006
Change-Id: I88c45059572fa25af4e0999f479ba5c28572db7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3746077
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81539}
2022-07-05 16:44:13 +00:00
Manos Koukoutos
69c77a4ea0 Revert "Remove some unused includes"
This reverts commit 2d74bfa4a0.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac%20-%20arm64%20-%20debug%20builder/7403/overview

Original change's description:
> Remove some unused includes
>
> Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.
>
> Bug: v8:13006
> Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81523}

Bug: v8:13006
Change-Id: I7579dc3805ed4cbcd56488c31450c7941b430b1a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3746076
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81526}
2022-07-05 11:57:40 +00:00
Manos Koukoutos
2d74bfa4a0 Remove some unused includes
Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.

Bug: v8:13006
Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81523}
2022-07-05 11:39:01 +00:00
Manos Koukoutos
5e2174fbbc [wasm-gc] Allow array.new(_default) as constant expressions
Additional change: Allow regular expressions in assertTraps.

Bug: v8:7748
Change-Id: I3bf99faec3d4f25fcf3caa4ed310f02f03196d4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743483
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81518}
2022-07-05 06:20:51 +00:00
Manos Koukoutos
bcd8bf90ff [wasm-gc] Introduce separate constructors for ref and (ref null)
Most often, the {ValueType::Ref} constructor was called with a
constant nullability. To make things more convenient, this CL renames
{Ref} to {RefMaybeNull}, and introduces {Ref} and {RefNull}
constructors with fixed nullability.

Bug: v8:7748
Change-Id: I664ff184ca936cc752e152c3c67546d79aa24390
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732936
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81494}
2022-07-01 13:43:58 +00:00
Manos Koukoutos
a0a786656f [wasm-gc][refactor] Rename optRef -> refNull
This makes the internal V8 name consistent with the text-format name.

Bug: v8:7748
Change-Id: I44f7ac1eb5e634b4f829e596bf1f14caeb748d54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726291
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81491}
2022-07-01 12:33:23 +00:00
Manos Koukoutos
44cd69a77d [wasm][fuzzer] Adapt --wasm-fuzzer-gen-test to new format
In crrev.com/c/3714237, we changed the representation of constant
expressions in mjsunit wasm tests to byte arrays. This CL complements
this change by updating the output of --wasm-fuzzer-gen-test to the
new format.

Change-Id: I6a9d861b5abe13621ffd2ceb3a54863b0188b40c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726294
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81414}
2022-06-28 14:19:06 +00:00
Manos Koukoutos
fd8309e806 [wasm] Rename "initializer" expression to "constant"
Change-Id: I6f2e5fa04eba1b3c97212be945b776ebc2be5915
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726210
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81399}
2022-06-27 12:56:41 +00:00
Manos Koukoutos
114a03ac82 [wasm-gc] Rename array opcodes
Rename:
- array.init(_static) -> array.new_fixed(_static)
- array.init_from_data(_static) -> array.new_data(_static)
- array.init_from_elem_static -> array.new_elem_static
- (Wasm)ArrayInitFromSegment -> (Wasm)ArrayNewSegment

Bug: v8:7748
Change-Id: I5ea314d653dd0e9f7f1f556469794d880934e01b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726207
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81393}
2022-06-27 11:32:39 +00:00
Manos Koukoutos
97eff73b71 [wams-gc] Enable i31.new as constant expression
Bug: v8:7748
Change-Id: Ib3b1d99107ad2a9c703e9dc546b522e208204d1c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3702443
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81205}
2022-06-16 07:04:53 +00:00
Manos Koukoutos
e4a7ef2b3b [wasm][refactor] Clean up constant expressions
Changes:
- Rename InitExpression -> ConstantExpression in places which reference
  the ConstantExpression type.
- Move ConstantExpression to its own file, along with ValueOrError and
  EvaluateConstantExpression.

Change-Id: Ife572d783531216b6ea3d2626e4fbf4048463253
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3702798
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81204}
2022-06-16 06:11:03 +00:00
Clemens Backes
46e95920e4 [flags] Disable flags freezing in tests, fuzzers, and others
This CL explicitly disables the --freeze-flags-after-init flag for cases
where we modify flags after initialization. This is only tests, fuzzers,
and special options to d8, thus not security relevant.

These should be the last blockers for enabling the flag globally.

R=cbruni@chromium.org

Bug: v8:12887
Change-Id: I1d8a03dcc20e524d30c967f6fe15f6401de77612
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3706619
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81179}
2022-06-15 11:52:46 +00:00
Clemens Backes
436f088944 [wasm][streaming] Check for illegal section code
Add a missing check to reject illegal sections.

The test is added in three forms, to give fuzzers more food: A fuzzer
regression test for the streaming fuzzer, a unit test for the streaming
decoder, and an mjsunit test for streaming compilation.

Drive-by: Remove a redundant line in the synchronous decoder (this is
already handled by the following statement.

R=ahaas@chromium.org

Bug: chromium:1335023
Change-Id: Ic8c3b301f1b58981c7d68eafcffc89531ed2c64c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3698549
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81071}
2022-06-10 14:23:07 +00:00