This CL changes the NumberDictionary fast-path for Array.p.sort to
throw a TypeError when trying to write to a read-only property.
Previously, the fast-path simply bailed to the slow-path which could
swallow the TypeError by accident. I.e. because the fast-path could
leave the array in an inconsistent state that is already sorted.
Example:
let arr = new Array(10);
Object.defineProperty(arr, 0, {value: 2, writable: false});
Object.defineProperty(arr, 2, {value: 1, writable: false});
arr.sort();
The pre-processing step will move the value 1 to index 1: {0: 2, 1: 1}
When trying to swap those 2 values, the fast-path will write the 2 at
index 1, then try to write the 1 at index 0 and fail, bailing to the
slow-path. As the array looks like {0: 2, 1: 2} its already sorted
and the TypeError will not be thrown.
R=jgruber@chromium.org
Bug: v8:7382, v8:7907
Change-Id: I5d2f2d73478fdca066ce1048dcb2b8301751cb1f
Reviewed-on: https://chromium-review.googlesource.com/1122120
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54150}
For spread calls with arrays with double elements but zero length,
we skip the box-as-heapnumber step; so in this corner case the
Call builtin sees a FixedDoubleArray, which is fine because it
doesn't read any of the raw double values from it.
This patch doesn't change the implementation, it only updates the
assert to match reality.
Bug: chromium:856095
Change-Id: I0227f4ccbc6c61c8f5f7669a266ef7a64c6a9a43
Reviewed-on: https://chromium-review.googlesource.com/1117922
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54149}
This correctly serializes {RelocInfo::INTERNAL_REFERENCE} addresses in a
position-independent form, so that they can be properly relocated when
the code is deserialized again. We store the offset within the code in
the serialized stream.
R=clemensh@chromium.org
TEST=mjsunit/wasm/compiled-module-serialization
BUG=chromium:857049
Change-Id: Ie8c84ee67bdfc17a65faa159a21cc1f2a78ac924
Reviewed-on: https://chromium-review.googlesource.com/1122414
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54140}
When parsing a numeric literal in a line like "a=0x0e+b|0;",
currently the scanner consumes the "e+" part (as it thinks
it's the start of an exponent).
In the ECMAScript lexical grammar HexIntegerLiteral cannot
contain exponents, which means the '+' character should be
parsed as a binary operator.
R=bradnelson@chromium.org
BUG=v8:7893
Change-Id: I97a0d4ea2ee1d38a3462efbfaef5eb87b8ea704b
Reviewed-on: https://chromium-review.googlesource.com/1116551
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54132}
This makes sure the reverse tag translation of direct call targets to
respective call tags is properly performed. Otherwise all direct call
end up being deserialized to call the function with index '0'. Ooops!
R=clemensh@chromium.org
TEST=mjsunit/wasm/compiled-module-serialization
BUG=chromium:857049
Change-Id: I37c1ee72b000daec87efdeed08d60a067b1a1b0c
Reviewed-on: https://chromium-review.googlesource.com/1120256
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54124}
This CL fixes the NumberDictionary fast-path in Array.p.sort, when
storing to a read-only property that was never read from.
R=jgruber@chromium.org
Bug: v8:7907
Change-Id: I2b772fb5b1619a94a7d239ba4417ecb7902a167c
Reviewed-on: https://chromium-review.googlesource.com/1119910
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54109}
When storing an indexed property in a typed array, it's necessary to
convert the value to a Number (or to a Bigint) before performing the
bounds check, per
https://tc39.github.io/ecma262/#sec-integerindexedelementset.
This CL adds appropriate type conversions in
Object::SetPropertyInternal (which technically is reached after the
bounds check has already occurred, but this isn't observable yet ---
In the future, once OOB accesses on TypedArrays actually throw, this
will need to be refactored again), and in StoreFastElementStub, and
ElementsTransitionAndStoreStub (via CSA::EmitElementStore).
The change was not necessary in TurboFan, as
JSNativeContextSpecialization already performs the value conversion
before the boundscheck.
The result is some fixed test262 tests, and some new test coverage
for this behaviour in mjsunit.
BUG=v8:7896, v8:5327
R=neis@chromium.org, jkummerow@chromium.org, gsathya@chromium.org
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ibe6bec24c72ef6a4fd3e77d5bcafa03737f4c5e3
Reviewed-on: https://chromium-review.googlesource.com/1117372
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54096}
Supporting postMessage from WebAssembly.Module requires implementing
some logic in the ValueSerializer and ValueDeserializer delegates. This
change implements some simple logic for d8.
This change also fixes a DCHECK that occurs when sending a shared
WebAssembly.Memory object to two Workers.
Bug: chromium:857049
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Idddb23a48175c7175967af3fbc03d8572452a069
Reviewed-on: https://chromium-review.googlesource.com/1117871
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54093}
When run locally, one times out and the other runs out of stack space.
R=sigurds@chromium.org
Change-Id: I7cc1aa9bb0857f12ac46baf80de18a2c5175b8b9
Reviewed-on: https://chromium-review.googlesource.com/1118231
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54087}
Previously the KeyAccumulator incorrectly reused the filter properties when
collecting the keys of a proxy target. This led to incorect behavior where for
instance non-enumerable properties were filtered too early.
Bug: v8:7818
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I9b43b65be168ef0975fea9245d433a54338d228e
Reviewed-on: https://chromium-review.googlesource.com/1113743
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54008}
The upstream test suite for Unicode property escapes [1] is exhaustive
and is updated soon after every new release of the Unicode Standard.
It is then upstreamed into Test262.
This patch simplifies our own Script_Extensions tests and the script
used to generate them. Now, only a few code points are tested for each
Script_Extension. This avoids unnecessary friction every time ICU
is updated based on a new Unicode version.
[1] https://github.com/mathiasbynens/unicode-property-escapes-tests
[2] https://github.com/tc39/test262/tree/master/test/built-ins/RegExp/property-escapes
Bug: chromium:850334, v8:7825
Change-Id: I792d6848ef48b41ea5e9db18b777040d019822f3
Reviewed-on: https://chromium-review.googlesource.com/1112250
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54003}
This is a reland of ada648006b, fixed
for 32 bit architectures (register pairs).
Original change's description:
> [Liftoff] Fix register use count
>
> In {SetLocalFromStackSlot}, we decrement the use count of the register
> in the target slot without updating this slot, and then call
> {GetUnusedRegister}. At that point, the register use counts do not
> match the cache state, which leads to errors later on.
> This CL fixes this by marking the target slot as a stack slot after
> reducing the register use count.
>
> It also adds a Validation which helped to find that error and will
> catch similar errors earlier.
>
> R=titzer@chromium.org
>
> Bug: chromium:854050, v8:6600
> Change-Id: I74d3a5aa947ec4247d7b4557567f642bf4082316
> Reviewed-on: https://chromium-review.googlesource.com/1111958
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53976}
TBR=titzer@chromium.org
Bug: chromium:854050, v8:6600
Change-Id: Ibc8801737e9604a8490382c569b0378585625376
Reviewed-on: https://chromium-review.googlesource.com/1112238
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53981}
This reverts commit ada648006b.
Reason for revert: Failure with slow dchecks: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20debug/20982
Original change's description:
> [Liftoff] Fix register use count
>
> In {SetLocalFromStackSlot}, we decrement the use count of the register
> in the target slot without updating this slot, and then call
> {GetUnusedRegister}. At that point, the register use counts do not
> match the cache state, which leads to errors later on.
> This CL fixes this by marking the target slot as a stack slot after
> reducing the register use count.
>
> It also adds a Validation which helped to find that error and will
> catch similar errors earlier.
>
> R=titzer@chromium.org
>
> Bug: chromium:854050, v8:6600
> Change-Id: I74d3a5aa947ec4247d7b4557567f642bf4082316
> Reviewed-on: https://chromium-review.googlesource.com/1111958
> Reviewed-by: Ben Titzer <titzer@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53976}
TBR=titzer@chromium.org,clemensh@chromium.org
Change-Id: I5b8d8d405dcd7f82ee431cba290419425b9859a1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:854050, v8:6600
Reviewed-on: https://chromium-review.googlesource.com/1112277
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53979}
In {SetLocalFromStackSlot}, we decrement the use count of the register
in the target slot without updating this slot, and then call
{GetUnusedRegister}. At that point, the register use counts do not
match the cache state, which leads to errors later on.
This CL fixes this by marking the target slot as a stack slot after
reducing the register use count.
It also adds a Validation which helped to find that error and will
catch similar errors earlier.
R=titzer@chromium.org
Bug: chromium:854050, v8:6600
Change-Id: I74d3a5aa947ec4247d7b4557567f642bf4082316
Reviewed-on: https://chromium-review.googlesource.com/1111958
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53976}
Cleanup decoding of flags so that invalid flags for sections other than
memory are caught correctly.
Bug: chromium:853453
Change-Id: Ia347d5f7672eee93ca3f6a743f06fba629f55cb5
Reviewed-on: https://chromium-review.googlesource.com/1104976
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53972}
Before flipping the flag, some tests need to be adapted. This CL
prepares these tests, such that the flag flip CL really just flips a
flag.
R=titzer@chromium.org, hablich@chromium.org
Bug: v8:6600, chromium:787421
Change-Id: I8030df69cda5f3fb81354350a37f65c0d1c669bd
Reviewed-on: https://chromium-review.googlesource.com/1110363
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Hablich <hablich@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53959}
Also add a DCHECK to a branch that can only be taken for the null
prototype.
R=sigurds@chromium.org
Change-Id: Ib94fe8f25ecfd1a4baa576915e6edfa60bcd771b
Reviewed-on: https://chromium-review.googlesource.com/1109961
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53939}
This CL fixes a bug where execution would continue on a fast-path
even though a previous recursion step bailed to the slow path. This
would allow possibly illegal loads that could leak to JS.
Drive-by change: Instead of bailing to the slow-path on each recursion
step, we now bail completely and start the slow-path afterwards.
R=cbruni@chromium.org, jgruber@chromium.org
Bug: chromium:854299, v8:7382
Change-Id: Ib2fd5d85dbd0c3894d7775c4f62e053c31b5e5d1
Reviewed-on: https://chromium-review.googlesource.com/1107702
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53892}
This CL fixes a bug that allowed OOB read/stores on fastpaths when
a comparison function caused the underlying FixedArray to change
while keeping the elements kinds and size property on the original
JSArray the same.
R=jgruber@chromium.org
Bug: chromium:852592
Change-Id: I09af357d10e7f41e75241e4c87430fc9aa806f8c
Reviewed-on: https://chromium-review.googlesource.com/1104158
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53811}
Reading up on the bug description, this is a test
that is triggered by TurboFan execution. This can
be done with natives and does not need excessive
loop iterations. Additionally, we have a more specific
regression test for the original issue in the repo:
http://crrev.com/c/584837
Bug: v8:7783
Change-Id: Id022b515b663e6fb897acb29f43ef92b70b547b8
Reviewed-on: https://chromium-review.googlesource.com/1101018
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53799}
This CL moves the remaining runtime DataView getters to Torque,
namely DataViewGetBigInt64/BigUint64, and removes the associated
runtime code that is now unneeded.
All of the DataView getters are now implemented in Torque, which brings
a nice performance improvement over the former C++ builtin code.
Change-Id: I35cf2eabce3c79cc0d3200e7f24dbe0c3e5c2804
Reviewed-on: https://chromium-review.googlesource.com/1092736
Commit-Queue: Théotime Grohens <theotime@google.com>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53765}
Byte offset can be outside of Smi range and must be loaded as a Number
rather than a Smi.
Bug: chromium:852258
Change-Id: Ida6e07ba68a050d4f5a9f28500986cc67c619b4c
Reviewed-on: https://chromium-review.googlesource.com/1100886
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53748}
We assumed that if the ErrorThrower is empty after instantiation, then
instantiation succeeded and an instance exists which we can return.
However, if the start function throws, no instance exists, which caused
a crash. With this CL we handle execeptions thrown by the start
function correctly.
R=clemensh@chromium.org
Bug: chromium:848966
Change-Id: I51dc94e6bc563aa4a4b88c44a14e831af913fbd8
Reviewed-on: https://chromium-review.googlesource.com/1092234
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53687}
Mutable globals are now included in the wasm v1 spec.
Bug: v8:7625
Change-Id: Ib9b92d8348102f99a3b92820d0057b2c11a1e49a
Reviewed-on: https://chromium-review.googlesource.com/1095650
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53683}
This is a reland of a229e12101
The original commit broke a layout test in Blink. The test in Blink
has been marked to be skipped and will be updated once this patch
lands.
See https://chromium-review.googlesource.com/c/chromium/src/+/1097455
Original change's description:
> [builtins] set DataView.length to 1
>
> Refs: https://github.com/tc39/ecma262/pull/1131
> Test: test262/built-ins/DataView/length
> Bug: v8:7816
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: I66a06734bd32cd2043a8d04728b2185f6093bd69
> Reviewed-on: https://chromium-review.googlesource.com/1094980
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53649}
Bug: v8:7816
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: If63be80523a68d3a2b515fe1d55a243d2dd2a9b2
Reviewed-on: https://chromium-review.googlesource.com/1097568
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53682}
Mutable globals are stored in the instance differently, so they must be
exported differently as well.
Also fix a counting bug that occurred when a module contained a global
and an imported mutable global (CalculateGlobalOffsets is called
twice).
Bug: v8:7625
Change-Id: I1cd7ef5d6ff7cb7e09239035f89d7b36d0436063
Reviewed-on: https://chromium-review.googlesource.com/1096673
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53681}
This CL re-enables a mjsunit test for some simulator configurations
after Array.p.sort pivot selection improvements have landed.
R=jgruber@chromium.org
Bug: v8:7795
Change-Id: I03599c34e34a0bafd5f276b03aa4f059a8078026
Reviewed-on: https://chromium-review.googlesource.com/1096764
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Simon Zünd <szuend@google.com>
Cr-Commit-Position: refs/heads/master@{#53660}
