This is a reland of 9eca23e9ed
Adds a deopt continuation, which fixes JavaScript stack traces
to contain the number constructor after inlining.
Original change's description:
> [turbofan] Inline Number constructor in certain cases
>
> This CL adds inlining for the Number constructor if new.target is not
> present. The lowering is BigInt compatible, i.e. it converts BigInts to
> numbers.
>
> Bug: v8:7904
> Change-Id: If03b9f872d82e50b6ded7709069181c33dc44e82
> Reviewed-on: https://chromium-review.googlesource.com/1118557
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54454}
Bug: v8:7904
Change-Id: Ic416e5ba81fa3a0f59ae4afa80df83c46a759487
Reviewed-on: https://chromium-review.googlesource.com/1146581
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54609}
This CL changes Array.p.fill to use the baseline implementation
for everything other than JSArray.
One of the reasons is that shadowing the length property on
TypedArrays (and other ElementsKinds) is allowed and should be
respected by Array.p.fill. The fast-path for fill for TypedArrays
expects the indices to be clamped to the actual length of the
underlying backing store and not to some length property.
While this mismatch (and others) could probably be handled properly,
we do the conservative thing and only use the fast-path for specific
JSArrays.
R=jgruber@chromium.org
Bug: chromium:865312
Change-Id: Ib3050e3bfc22d47ca8597b6df34788dc2b59b6e1
Reviewed-on: https://chromium-review.googlesource.com/1142772
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Simon Zünd <szuend@google.com>
Cr-Commit-Position: refs/heads/master@{#54558}
i32 stack parameters can be loaded by Turbofan as 64-bit value, hence
they would not be zero extended. If this loaded value is then passed to
Liftoff (which assumes zero-extended i32 values), we could use it for
memory accesses, which would be out of bounds.
R=mstarzinger@chromium.org
Bug: chromium:864509, v8:6600
Change-Id: I0f45a269b1fb1c2befc2e6bc660c559a88323767
Reviewed-on: https://chromium-review.googlesource.com/1140168
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54500}
The instruction selector currently sometimes emits a lea32 with an
offset of 0, which the code generator just ignores (emits no code at
all). This can result in the result of TruncateInt64ToInt32 to not be
zero extended.
This CL fixes that by disallowing lea32 instructions with 0 offset, and
fixing the instruction selector to generate a movl or just no code for
that case.
R=jarin@chromium.org
Bug: chromium:863810, v8:7947
Change-Id: I1b21fc5f0fda9ca3144917538c3d0bbf46601c33
Reviewed-on: https://chromium-review.googlesource.com/1137825
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54489}
This removes an occurrence where the "%Foo" native syntax appears as part
of a string. Such strings are picked up by the fuzzer and recombined in
unsupported ways, producing false-positive crash reports. Simply avoid
having those strings in the fuzzing corpus.
R=clemensh@chromium.org
TEST=mjsunit/regress/wasm/regress-808848
BUG=chromium:844842
Change-Id: I017c1552578f0d26033e58b11353e87e27a69ebf
Reviewed-on: https://chromium-review.googlesource.com/1136300
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54432}
When we changed FeedbackMetadata to be it's own type instead of a
subtype of FixedArray, we missed this check for valid objects in old
space. This restores the old behavior during verification.
Bug: chromium:862433
Change-Id: Icdb144df4aebc0c6d78a28405c7f53e40b2e1376
Reviewed-on: https://chromium-review.googlesource.com/1134995
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54408}
After liveedit removed - we do not need this context any more.
R=yangguo@chromium.orgTBR=clemensh@chromium.org
Bug: v8:5530
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Idb43d016d51b8048f6cd2ca590fd7510abcacb49
Reviewed-on: https://chromium-review.googlesource.com/1106802
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54273}
Fixes V8 correctness failure when there's a proxy in the global object
prototype chain and unsuccessful attempt is made to access a property.
Bug: chromium:849024
Change-Id: I829e1a6c038982b7c7a77f8bdefb61facb4614f0
Reviewed-on: https://chromium-review.googlesource.com/1124446
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54237}
We need to push the sign-extended constant instead of just the lower 32
bits. Otherwise, the callee might read stale data from the stack.
Bug: chromium:854011, v8:6600
R=ahaas@chromium.orgCC=rodolph.perfetta@arm.com
Change-Id: Iafcfd6ba9532771615b41215fb4d1a2b85ce5623
Reviewed-on: https://chromium-review.googlesource.com/1124683
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54185}
This CL adds a regression test that will check that the elements
pointer is properly reloaded after the JavaScript comparison
function is called during Array.p.sort.
R=jgruber@chromium.org
Bug: chromium:859809
Change-Id: I15f55fcc1906bd8d0751596e5457367a643b92da
Reviewed-on: https://chromium-review.googlesource.com/1124475
Commit-Queue: Simon Zünd <szuend@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54174}
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}
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 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}
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}
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}
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}
`date` could be outside the int32_t range and thus FastD2I may not be
used.
Bug: chromium:849663
Change-Id: I96a012b40d35ec8f80e449e4e687b0ce7b572d5e
Reviewed-on: https://chromium-review.googlesource.com/1087063
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53526}
Compress the parameter count (and function length) stored in
SharedFunctionInfo to a uint16_t. This limits us to 2^16 - 1 parameters
per function, minus one for the "don't adapt arguments" sentinel value,
which is one fewer than Code::kMaxArguments was already. Anyway, 65534
arguments should be enough for anyone!
This drops SFI size by 4 bytes.
Bug: chromium:818642
Change-Id: I126bfb24453dcdc5087a104d3a12cf195a56fa9f
Reviewed-on: https://chromium-review.googlesource.com/1076627
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53447}
The regression test 2185-2 measured the Array.p.sort time for various
pre-sorted data configurations. This CL adds the various data
configurations to the ArraySortPreSorted benchmark and removes the
regression test altogether.
R=cbruni@chromium.org, jgruber@chromium.org
Change-Id: I6e2eb235e4a7578f4a107229bfc6a9e89a3aa5e3
Reviewed-on: https://chromium-review.googlesource.com/1076188
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@{#53420}
This loads references to {null} values from the instance object instead
of embedding them into the generated code. It is one step towards making
the {WasmCode} objects independent of the Isolate.
Note that this also fixes an issue with the serializer/deserializer that
failed to properly serialize {null} values and accidentally collapsed
them to {undefined} values instead.
R=ahaas@chromium.org
TEST=mjsunit/regress/wasm/regress-7785
BUG=v8:7424,v8:7785
Change-Id: Ie436c2d96890e7c8c89ffe2bd4189a759254775b
Reviewed-on: https://chromium-review.googlesource.com/1070981
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53352}
At the moment, WebAssembly.instantiate(bytes) is implemented by
desugaring it to WebAssembly.compile(bytes).then(WebAssembly.instantiate).
The problem is that the {then} in this snippet is observable. With this
CL I introduce a CompilationResultResolver which allows to do the
desugaring internally and thereby make the {then} unobservable.
Unfortunately the result of WebAssembly.instantiate(bytes) is different
than the result of WebAssembly.instantiate(module). Therefore I also
introduced an InstantiationResultResolver for symmetry with
WebAssembly.compile.
R=mstarzinger@chromium.org
Bug: chromium:837417
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I2d98e03d65f2ada19041d5a9e2df5da91b24ccca
Reviewed-on: https://chromium-review.googlesource.com/1059783
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53347}
