- Fix a wrong type casting triggered when a given array's length is zero
- Add a regression test case
Bug: chromium:777182, chromium:768775
Change-Id: I615b73e9d7bad657c872c96c7a204efe355d8289
Reviewed-on: https://chromium-review.googlesource.com/732865
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48821}
- Throw a TypeError exception if a given target argument is not a typed
array before converting a given offset argument to an integer.
- Add a testcase
Bug: chromium:768775
Change-Id: Id132a0f154fcf930f211922fcbef6c66f9d6f285
Reviewed-on: https://chromium-review.googlesource.com/728120
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48736}
Replace GetElement and SetElement to Get and Set, and use CopyElements,
which reduces 4x-13x overheads.
Bug: chromium:768775
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I58534b30c2035195c5f4b8f2c04e7c459bdbebaa
Reviewed-on: https://chromium-review.googlesource.com/720661
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48723}
Previously, Function("++f`...`) would not throw an exception until the
created function was called. Now, it throws an early ReferenceError.
This change matches the behaviour in JavaScriptCore and SpiderMonkey.
Ordinary calls such as Function("++f()") are still thrown at runtime,
also compatible with JavaScriptCore and SpiderMonkey.
BUG=v8:4480, v8:6910
R=marja@chromium.org, littledan@chromium.org
Change-Id: If31c6d360a0464744eff5d8dd377ebff184ae00e
Reviewed-on: https://chromium-review.googlesource.com/712794
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48553}
- Expose fast paths for RegExpPrototypeMatchBody/RegExpPrototypeSearchBody as TFS builtins
- Add StringPrototypeMatch and StringPrototypeSearch TFJ builtins
- Add StringMatchSearchAssembler to ensure same search/match behavior
- Remove functionality from string.js
A quick benchmark shows gains of 20-30% for unoptimized code and 0-20% for optimized code.
https://github.com/peterwmwong/v8-perf/blob/master/string-search-match/README.md
Bug: v8:5049
Change-Id: I0fffee6e94e62ecae049c9e5798da52d67ae1823
Reviewed-on: https://chromium-review.googlesource.com/707824
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48452}
This brings V8's behavior in line with both the spec and with
other engines.
This also fixes the (now-incorrect) DCHECK in BytecodeGenerator relating
to the delete operator's application to a VariableProxy.
Bug: v8:6697, v8:6721
Change-Id: I413c02af235b0bb652eb4c5d5c971e2cf80e0906
Reviewed-on: https://chromium-review.googlesource.com/703894
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48346}
When setting a typed array from an array like object, the
length of the source can only be converted to a unit32 if
it is not too large.
Bug: v8:6704, chromium:761654
Change-Id: I8f89aa348093d8bd4d54aa16d6b5f255d3cb7adc
Reviewed-on: https://chromium-review.googlesource.com/648976
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47798}
This flag allows invalid escape sequences in tagged templates, which is
a stage-4 TC39 proposal shipping in other browsers.
Bug: v8:5546
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I3e7c374c9b547f62d5976f76a7208d05fe9decf8
Reviewed-on: https://chromium-review.googlesource.com/581885
Commit-Queue: Kevin Gibbons <bakkot@gmail.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47584}
(source_length - 1) can be overflowed, and cause OOB access when source_length
is zero. Thus, just do not operate setting if source_length is zero when
starting TypedArraySetFromOverlapping.
Bug: v8:6704
Change-Id: I5da60590c9a197eae96625a12720f6818b8c598a
Reviewed-on: https://chromium-review.googlesource.com/620452
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47430}
This reverts commit 15ef03cbf3.
Reason for revert: Found the following bugs
Bug: chromium:752846, chromium:752712, chromium:752850
Original change's description:
> Reland "[builtins] Port getting property from Proxy to CSA"
>
> This reland is after fix in [heap] Delete wrong DCHECK.
> It includes moving ProxyGetProperty to its own stub to reduce
> binary size.
>
> This is a reland of 47a97aa53b
> Original change's description:
> > [builtins] Port getting property from Proxy to CSA
> >
> > Bug: v8:6559, v8:6557
> > Change-Id: If6c51f5483adb73ddd2495cede5d85e887a3c298
> > Reviewed-on: https://chromium-review.googlesource.com/589212
> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Commit-Queue: Maya Lekova <mslekova@google.com>
> > Cr-Commit-Position: refs/heads/master@{#47113}
>
> Bug: v8:6559, v8:6557
> Change-Id: I76acd97ba1acb62b7e7983db1741441d997050f0
> Reviewed-on: https://chromium-review.googlesource.com/600215
> Commit-Queue: Maya Lekova <mslekova@google.com>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47159}
TBR=jkummerow@chromium.org,mstarzinger@chromium.org,franzih@chromium.org,jgruber@chromium.org,ishell@chromium.org,bmeurer@chromium.org,mslekova@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I51bef25a031b02cf4deab11282473acae57f1ed3
Reviewed-on: https://chromium-review.googlesource.com/603708
Commit-Queue: Maya Lekova <mslekova@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47200}
This reland is after fix in [heap] Delete wrong DCHECK.
It includes moving ProxyGetProperty to its own stub to reduce
binary size.
This is a reland of 47a97aa53b
Original change's description:
> [builtins] Port getting property from Proxy to CSA
>
> Bug: v8:6559, v8:6557
> Change-Id: If6c51f5483adb73ddd2495cede5d85e887a3c298
> Reviewed-on: https://chromium-review.googlesource.com/589212
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@google.com>
> Cr-Commit-Position: refs/heads/master@{#47113}
Bug: v8:6559, v8:6557
Change-Id: I76acd97ba1acb62b7e7983db1741441d997050f0
Reviewed-on: https://chromium-review.googlesource.com/600215
Commit-Queue: Maya Lekova <mslekova@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47159}
- Add more conformance tests for proxy call and calling undetectable
- This improves the performance of calling a proxy by ~5x
Bug: v8:6558, v8:6557
Change-Id: I5fe78d7ca703cfe86a2a14e39f0b6d88bb8c8e03
Reviewed-on: https://chromium-review.googlesource.com/570023
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Maya Lekova <mslekova@google.com>
Cr-Commit-Position: refs/heads/master@{#46673}
This CL inlines the following builtins into TurboFan
- %MapIteratorPrototype%.next
- %SetIteratorPrototype%.next
following the design that we are using for Array iteration already
(different instance types for the different kinds of iterators). Details
can be found in the relevant design document at:
https://docs.google.com/document/d/13z1fvRVpe_oEroplXEEX0a3WK94fhXorHjcOMsDmR-8
The key to great performance here is to ensure that the inlined code
allows escape analysis and scalar replacement of aggregates to remove
the allocations for the iterator itself as well as the iterator results
and potential key/value arrays in the simple case of a for-of loop (and
by extension also in other constructs that reduce to for-of loops
internally), i.e.:
const s = new Set;
// ... do something with s
for (const x of s) {
// ...
}
Here the for-of loop shouldn't perform any allocations of helper
objects.
Drive-by-fix: Replace the ExistsJSMapWithness in JSBuiltinReducer with a more
general HasInstanceTypeWitness, similar to what's in JSCallReducer. Also
migrate the {Map,Set}.prototype.size getter inlining to the
JSBuiltinReducer, so that everything is in a single place.
R=jgruber@chromium.org
Bug: v8:6344, v8:6571, chromium:740122
Change-Id: I09cb506fe26ed3e10d7dcb2f95ec4415e639582d
Reviewed-on: https://chromium-review.googlesource.com/570159
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46655}
The tail call implementation is hidden behind the --harmony-tailcalls
flag, which is off-by-default (and has been unstaged since February).
It is known to be broken in a variety of cases, including clusterfuzz
security issues (see sample Chromium issues below). To avoid letting
the implementation bitrot further on trunk, this patch removes it.
Bug: v8:4698, chromium:636914, chromium:724746
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I9cb547101456a582374fdf7b1a3f044a9ef33e5c
Reviewed-on: https://chromium-review.googlesource.com/569069
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46651}
... that have computed name and/or require home object.
This should give us the opportunity to implement initialization
of name and home object values in a stub.
Bug: v8:6459
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I47a1a2c185e120e86c793733cce737811f895291
Reviewed-on: https://chromium-review.googlesource.com/512802
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46638}
This correctly types values loaded via {LoadElement} nodes from arrays
of HOLEY_DOUBLE_ELEMENTS elements kind as {Type::NumberOrHole}. Even
though "the hole" is still encoded as a tagged NaN, the type system
still needs to consider it as a potential hole value.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-736575
BUG=chromium:736575
Change-Id: Ib869284900a4affb2ddaa1d2a96df9443dba6921
Reviewed-on: https://chromium-review.googlesource.com/567180
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46620}
Previously we enforced that all lengths for ArrayLike objects must
be within Smi range, but all negative numbers should actually be first
converted to +0.
Bug: chromium:740372
Change-Id: If50de9ce0eeb7cb09e14b8e8803f434350d00508
Reviewed-on: https://chromium-review.googlesource.com/566867
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46615}
This is the next step towards faster Map and Set iteration. It
introduces the appropriate instance types for Map and Set
iterators (following the pattern for Array iterators) and migrates
the following builtins to the CodeStubAssembler:
- Set.prototype.entries
- Set.prototype.values
- Map.prototype.entries
- Map.prototype.keys
- Map.prototype.values
- %SetIteratorPrototype%.next
- %MapIteratorPrototype%.next
This already provides a significant performance boost for regular
for-of iteration of Sets and Maps, by a factor of 5-10 depending
on the input. The final step will be to inline some fast-paths
into TurboFan.
Drive-by-fix: Remove obsolete %IsJSSetIterator and %IsJSMapIterator
intrinsics and runtime functions.
TBR=jgruber@chromium.org
Bug: v8:6344, v8:6571, chromium:740122
Change-Id: I3ab0ee49e2afe8d4295707a5ecbd51adda621918
Reviewed-on: https://chromium-review.googlesource.com/563626
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46497}
This sometimes caused problems with bots (for node too) because the
allocation could fail.
Bug: v8:6452
Change-Id: I346a9117eba8b6ed41566efeceaf7fb190784d76
Reviewed-on: https://chromium-review.googlesource.com/558075
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46373}
The `FAST_` prefix doesn’t make much sense — they’re all just different cases
with their own optimizations. Packedness being implicit (e.g. `FAST_ELEMENTS`
vs. `FAST_HOLEY_ELEMENTS`) is not ideal, either.
This patch renames the FAST elements kinds as follows:
- e.g. FAST_ELEMENTS => PACKED_ELEMENTS
- e.g. FAST_HOLEY_ELEMENTS => HOLEY_ELEMENTS
The following exceptions are left intact, for lack of a better name:
- FAST_SLOPPY_ARGUMENTS_ELEMENTS
- SLOW_SLOPPY_ARGUMENTS_ELEMENTS
- FAST_STRING_WRAPPER_ELEMENTS
- SLOW_STRING_WRAPPER_ELEMENTS
This makes it easier to reason about elements kinds, and less confusing to
explain how they’re used.
R=jkummerow@chromium.org, cbruni@chromium.org
BUG=v8:6548
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ie7c6bee85583c3d84b730f7aebbd70c1efa38af9
Reviewed-on: https://chromium-review.googlesource.com/556032
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46361}
This reverts commit 96698b55e0.
Reason for revert: This patch was correct when it landed, but later,
the spec was changed to V8's old behavior in
https://github.com/tc39/ecma262/pull/885 .
Original change's description:
> [parser] allow ASI when "await" or "yield" follows "let"
>
> Per https://github.com/tc39/test262/pull/956, André believes that ASI
> should be permitted in these situations.
>
> BUG=
> R=marja@chromium.org, adamk@chromium.org, littledan@chromium.org
>
> Change-Id: I5602d8a507576607750ffa9e873e1bfa53dd3523
> Reviewed-on: https://chromium-review.googlesource.com/472568
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Commit-Queue: Caitlin Potter <caitp@igalia.com>
> Cr-Commit-Position: refs/heads/master@{#44585}
TBR=adamk@chromium.org,marja@chromium.org,littledan@chromium.org,caitp@igalia.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I2c5bf709867da539ccd4cd82f3be98c8a0301f31
Reviewed-on: https://chromium-review.googlesource.com/553617
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46317}
This removes the --turbo flag and solely relies on the filter pattern
provided via --turbo-filter when deciding whether to use TurboFan. Note
that disabling optimization wholesale can still be done with --no-opt,
which should be used in favor of --no-turbo everywhere.
Also note that this contains semantic changes to the TurboFan activation
criteria. We respect the filter pattern more stringently and no longer
activate TurboFan just because the source contains patterns forcing use
of Ignition via {AstNumberingVisitor::DisableFullCodegenAndCrankshaft}.
R=rmcilroy@chromium.org
BUG=v8:6408
Change-Id: I0c855f6a62350eb62283a3431c8cc1baa750950e
Reviewed-on: https://chromium-review.googlesource.com/528121
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46167}
In edge cases such as the following, sloppy-mode block-scoped function
hoisting is expected to occur:
eval(`
with({a: 1}) {
function a() {}
}
`)
In this case, there should be the equivalent of a var declaration
outside of the eval, which gets set to the value of the local function
a when the body of the with is executed.
Previously, the way that var declarations are hoisted out of eval
meant that the assignment to that var was an ordinary DYNAMIC_GLOBAL
assignment. However, such a lookup mode meant that the object in the
with scope received the assignment!
This patch fixes that error by marking the assignments produced by
the sloppy mode block scoped function hoisting desugaring so as to
generate a different runtime call which skips with scopes.
Bug: chromium:720247, v8:5135
Change-Id: Ie36322ddc9ca848bf680163e8c016f50d4597748
Reviewed-on: https://chromium-review.googlesource.com/529230
Commit-Queue: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46116}
(Reland: NeedsManualRebaseline'd newly-fixed layout test in Chromium.)
This was never legal; the spec only allows '\0' in strict-mode strings
or templates when not followed by a decimal digit. Previously we were
only enforcing that it not be followed by an _octal_ digit.
This was already fixed for numeric literals, but not for escape
sequences in strings.
BUG=v8:6504
Review-Url: https://codereview.chromium.org/2948903002
Cr-Commit-Position: refs/heads/master@{#46106}
This was never legal; the spec only allows '\0' in strict-mode strings or templates
when not followed by a decimal digit. Previously we were only enforcing that it
not be followed by an _octal_ digit.
This was already fixed for numeric literals, but not for escape sequences in strings.
BUG=v8:6504
Review-Url: https://codereview.chromium.org/2950633002
Cr-Commit-Position: refs/heads/master@{#46046}
We can remove a lot of native code and rely on CallOrConstructVarargs
to do the stack manipulation for us.
This will also take advantage of the fast-path for double arrays in
CallOrConstructDoubleVarargs.
We can also remove Runtime_SpreadIterableFixed because it isn't used
anymore. We just call directly into spread_iterable from CSA.
Bug: v8:6488, chromium:704966
Change-Id: I81a18281f062619851134fff7ce88471566ee3b5
Reviewed-on: https://chromium-review.googlesource.com/535615
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46038}
The initial implementation did not work in certain cases.
For example, in the following case 'f' didn't have a shared name while
it should have had an empty shared name:
var f = (function() { return function() { return 42; } }();
The new implementation ensures that all anonymous functions have empty
shared name and if any of them happen to be an object literal property
value or an accessor function or a concise method then such a function
is marked as having no shared name.
Bug: v8:6459
Change-Id: I0f936afce0c152d91b2b41c1dc475a5ed841eca0
Reviewed-on: https://chromium-review.googlesource.com/538666
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46026}
We only need to use this for certain Intrinsics defined in the spec.
This CL removes unnecessary uses.
Bug: v8:6474
Change-Id: I13a9f0c57d877dd65a883a38f9683d55623030d3
Reviewed-on: https://chromium-review.googlesource.com/529224
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46012}
Properly propagate the fact that the function has a statically known name from
parser to SharedFunctionInfo objects. The empty string that has been set as
name before this CL does not help to distinguish cases like:
var o1 = { ''(){} };
var o1 = { [foo()](){} };
or
var o2 = { get ''(){} };
var o2 = { get [foo()](){} };
This is a preliminary step for using different layouts for closure objects with
and without computed names.
TBR=bmeurer@chromium.org, marja@chromium.org
Bug: v8:6459
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I10afa6f4bda7881c3714711a75f720f83c1d875d
Reviewed-on: https://chromium-review.googlesource.com/522073
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45744}
A few tests that would be good to have to verify that the known manifestations
of this bug are resolved.
Previously, the async generator and async function tests would crash. The other
ones never did, but still resulted in the register overwite bug.
BUG=v8:6322
R=adamk@chromium.org
Change-Id: Ic2238227629077de5671d67d18b3bfe018dd23f4
Reviewed-on: https://chromium-review.googlesource.com/514230
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#45524}
Removes the do-expression wrapping, modifies BytecodeGenerator change
to enter a class literal's block scope if needed.
This does not solve the actual bug in v8:6322, but helps mitigate it in
simple cases. The bug is caused by BytecodeGenerator not allocating a
large enough array of context registers to hold its entire stack,
allowing non-context registers to be overwritten during PushContext and
PopContext bytecodes.
Nevertheless, I like the idea of not depending on do-expressions when
possible, so I think it's worth doing anyways.
BUG=v8:6322
R=rmcilroy@chromium.org, marja@chromium.org, littledan@chromium.org
Change-Id: I82b7569db2a0eead1694bd04765fc4456c2f1a0a
Reviewed-on: https://chromium-review.googlesource.com/491074
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45110}
The existing CHECK assumed that the source and destination could not
have the same buffer, but they actually can as long as the data
ranges do not overlap within the buffer. Change the check to look for
this more relaxed condition instead.
Moved the check outside of the memcpy case as well, given that it
should also apply for the slower, element-by-element copy as well.
Also use JSTypedArray::element_size() to get the element size instead
of the helper on the FixedTypedArrayBase. This lets us change that
helper back to private again.
Bug: chromium:717022
Change-Id: I2eca1df1e87444c5db397e0b7cf686cefe67d29c
Reviewed-on: https://chromium-review.googlesource.com/493147
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45035}
String inputs would end up in the fast-path, crashing because it
expected an array type. Add the fast path explicitly when the source is
a TypedArray, and let everything else fall back to the generic JS
implementation.
Bug: chromium:715971
Change-Id: Ieec28e93279047d403e00ed2676dc1eda193c033
Reviewed-on: https://chromium-review.googlesource.com/493226
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45034}
1. Replaces --crankshaft with --opt in tests.
2. Also fixes presubmit to check for --opt flag when
assertOptimized is used.
3. Updates testrunner/local/variants.py and
v8_foozie.py to use --opt flag.
This would mean, nooptimize variant means there are
no optimizations. Not even with %OptimizeFunctionOnNextCall.
Bug:v8:6325
Change-Id: I638e743d0773a6729c6b9749e2ca1e2537f12ce6
Reviewed-on: https://chromium-review.googlesource.com/490206
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44985}
The spec requires that a null @@split / @@replace symbol is treated exactly the
same as if it were undefined, i.e. execution should move on to the default
implementation instead of throwing a TypeError.
BUG=v8:6313
Review-Url: https://codereview.chromium.org/2845153002
Cr-Commit-Position: refs/heads/master@{#44959}
For holey Smi and double source arrays, we would go to the general
case, which is much slower than before. We already check that there
are no prototype chain changes in IterableToListCanBeElided, and
there is no JS-code run between that check and the copying of the
elements, so we can safely check for the hole and convert it to
undefined, which is then converted to 0/NaN appropriately for the
given TypedArray.
Bug: chromium:713570,chromium:711275
Change-Id: I5b21c915907d71eebb73b7b1eea8eb58b4a5436d
Reviewed-on: https://chromium-review.googlesource.com/485520
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44899}
This includes a fastpath in the ElementsAccessor for the source
array being a JSArray with FastSmi or FastDouble packed kinds. This
is probably a pretty common usage, where an array is passed in as
a way of initializing the TypedArray at creation (as there is not other
syntax to do this). e.g. new Float64Array([1.0, 1.0, 1.0]) for some
sort of vector application.
BUG= v8:5977
Change-Id: Ice4ad9fc29f56b1c4b0b30736a1330efdc289003
Reviewed-on: https://chromium-review.googlesource.com/465126
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44722}
According to the spec the copy step is defined iteratively and with
@@species we can create a TypedArray which shares the buffer with the
receiver which in turn prevents us from using memcpy.
Bug: v8:6223
Change-Id: If1bad085ea1d022bf3fb2cffc81645b2f7f56346
Reviewed-on: https://chromium-review.googlesource.com/471409
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44520}
The spec requires that we use IterableToList, which we skipped for
some arrays as an optimization. We can't skip this for arrays with
objects though, because the objects may mutate the array during
the copying step via valueOf side effects.
Also clean up the implementation to use a runtime function rather
than a builtin as the helper. Also reverses the result of the helper
because I think it is a bit more intuitive that way.
Bug: v8:6224
Change-Id: I9199491abede4479785df6d9068331bc2d6e9c5e
Reviewed-on: https://chromium-review.googlesource.com/471986
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44507}
Update according to new spec change at
https://github.com/tc39/ecma262/pull/856
- Call ToNumber only once in BUILTIN
- Remove unused FillNumberSlowPath
- FillImpl assumes obj_value->IsNumber() is true
- Update test
Bug:v8:5929,chromium:702902
Change-Id: Ic83e6754d043582955b81c76e68f95e1c6b7e901
Reviewed-on: https://chromium-review.googlesource.com/465646
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44373}
The last CL https://chromium-review.googlesource.com/c/456707/ caused
some pretty heavy performance regressions. After experimenting, it
seems the easiest and most straight-forward way to copy the elements
into the new typed array is to do it in JS.
Adds a fast path for typed arrays, where the source typed array has
the same elements kind, in which case we can just copy the backing
store using memcpy.
This CL also removes regression test 319120 which is from a pwn2own
vulnerability. The old code path enforced a maximum byte_length
that was too low, which this change removes. The length property of
the typed array must be a Smi, but the byte_length, which can be up
to 8x larger than length for a Float64Array, can be a heap number.
We can also re-use some of the logic from ConstructByLength when
deciding whether to allocate the buffer on- or off-heap, so that
is factored out into InitializeBasedOnLength. We can also re-use
the DoInitialize helper instead of calling into the runtime,
meaning we can remove InitializeFromArrayLike.
BUG=v8:5977,chromium:705503,chromium:705394
Change-Id: I63372652091d4bdf3a9491acef9b4e3ac793a755
Reviewed-on: https://chromium-review.googlesource.com/459621
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44301}
ToNumber for Oddball/String has no side-effect, no need to go
through %Typearray%.prototype.fill slow path.
BUG=v8:5929,chromium:702902
Review-Url: https://codereview.chromium.org/2769673002
Cr-Commit-Position: refs/heads/master@{#44129}
This helper is used directly when constructing from an object with
a length, as well as by ConstructByIterable and ByTypedArray.
BUG=v8:5977
Change-Id: I18a4829c2a22a6099cf3b0824ea1f698bfbf1917
Reviewed-on: https://chromium-review.googlesource.com/456707
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44116}
The AssignmentExpressions can legally contain destructuring assignments.
BUG=v8:6098
R=marja@chromium.org, adamk@chromium.org
Change-Id: I99b3a0f4c8d103edfb1dda943ec3e2ab2a5969f7
Reviewed-on: https://chromium-review.googlesource.com/455221
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44049}
- Implement C++ builtins and ElementsAccessor for
%TypedArray%.prototype.lastIndexOf
- Remove TypedArrayLastIndexOf in src/js/typedarray.js
- Combine InnerArrayLastIndexOf and ArrayLastIndexOf in src/js/array.js
BUG=v8:5929
Review-Url: https://codereview.chromium.org/2744283002
Cr-Commit-Position: refs/heads/master@{#43870}
Part of the performance and refactoring work to move the TypedArray
constructors into CSA. This CL moves ConstructByArrayBuffer from JS
to CSA.
BUG=v8:5977
Change-Id: I0a200e6b3f6261ea2372ea9c3d3ca98e313cf2c5
Reviewed-on: https://chromium-review.googlesource.com/451620
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43747}
Part of the performance and refactoring work to move the TypedArray
constructors into CSA. This CL moves ConstructByLength from JS
to CSA.
There are still other callers to typed_array_initialize in
typedarray.js, so we share the implementation using DoInitialize.
In a later CL we can split apart DoInitialize once we have more
TA constructors written in CSA, so that we can reuse specific
parts more easily.
BUG=v8:5977
Change-Id: Ia51e8363970e9a025a82933e56a7baaf82cb1eec
Reviewed-on: https://chromium-review.googlesource.com/448220
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43626}
The callsite in ConstructByArrayBuffer could have a length that is
above Smi range if the buffer had such a length. Check this before
calling. Add a test too.
BUG=v8:5977, chromium:698201
Change-Id: Ic22046a31607f1f85642c8caf7f5ed064edb3110
Reviewed-on: https://chromium-review.googlesource.com/449813
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43589}
We should throw a RangeError for offset % elementSize before
length.toPrimitive is observable. Adds a test that checks this, too.
BUG=v8:6037
Change-Id: Ie9f2551c8e8fb0018b508762ac93cdc470e15dde
Reviewed-on: https://chromium-review.googlesource.com/449792
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43582}
Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
because we always go to the C++ builtin. Port the builtin to CSA
to improve performance, and to clean up the implementation, which is
split across multiple files and pieces at the moment.
This CL increases the performance with --future to roughly the same
as with crankshaft.
BUG=v8:5977
Change-Id: Id0d91a4592de41a3a308846d79bd44a608931762
Reviewed-on: https://chromium-review.googlesource.com/448537
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43548}
This reverts commit b23b2c107b.
Reason for revert: Makes Linux debug bot sad
Original change's description:
> [builtins] Port TypedArrayInitialize to CodeStubAssembler.
>
> Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
> because we always go to the C++ builtin. Port the builtin to CSA
> to improve performance, and to clean up the implementation, which is
> split across multiple files and pieces at the moment.
>
> This CL increases the performance with --future to roughly the same
> as with crankshaft.
>
> BUG=v8:5977
>
> Change-Id: I5a4c4b544a735a56290b85bf33c2f3718df7e2b8
> Reviewed-on: https://chromium-review.googlesource.com/445717
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#43518}
TBR=cbruni@chromium.org,petermarshall@chromium.org,bmeurer@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5977
Change-Id: I5d5bc8b4677a405c716d78e688af80ae9c737b4a
Reviewed-on: https://chromium-review.googlesource.com/448558
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43520}
Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
because we always go to the C++ builtin. Port the builtin to CSA
to improve performance, and to clean up the implementation, which is
split across multiple files and pieces at the moment.
This CL increases the performance with --future to roughly the same
as with crankshaft.
BUG=v8:5977
Change-Id: I5a4c4b544a735a56290b85bf33c2f3718df7e2b8
Reviewed-on: https://chromium-review.googlesource.com/445717
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43518}
BUG=v8:6022
Change-Id: I54205cb3ecc2dd31ed62e55726f0ec5fcd202c30
Reviewed-on: https://chromium-review.googlesource.com/446349
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43500}
- Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
- Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
relies on std::memmove rather than accessing individual eleements.
- Fixes the case where copyWithin is invoked on a TypedArray with a
detached buffer.
- Add tests to ensure that +/-Infinity (for all 3 parameters) is handled
correctly by the
algorithm
The C++ version gets through the benchmark more than 25000 times as
quickly as the JS implementation.
BUG=v8:5925, v8:5929, v8:4648
R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
Review-Url: https://codereview.chromium.org/2697593002
Cr-Commit-Position: refs/heads/master@{#43213}
If the Reflect.construct receives an argument expected to be a constructor,
and the argument is not a constructor, V8 currently declares that
Reflect.construct is not a function. It should instead say that the offending
argument is not a constructor.
This is the case for all ports of builtins
(Builtins::Generate_ReflectConstruct). All of them make an
attempt to at least pass the right argument to the TypeError parametrised
message, calling out the offending Reflect.construct argument. However,
Runtime::kThrowCalledNonCallable extracts the callsite from those arguments,
discarding the precise information.
This CL adds Runtime::kNotConstructor, which reports the arguments passed
to it, and the CL also modifies the ports of builtins to make use of
Runtime::kNotConstructor
BUG=v8:5671
Review-Url: https://codereview.chromium.org/2688393003
Cr-Commit-Position: refs/heads/master@{#43182}
Reason for revert:
Due to security issue described in review thread.
Original issue's description:
> [typedarrays] move %TypedArray%.prototype.copyWithin to C++
>
> - Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
> - Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
> relies on std::memmove rather than accessing individual eleements.
> - Fixes the case where copyWithin is invoked on a TypedArray with a
> detached buffer.
> - Add tests to ensure that +/-Infinity (for all 3 parameters) is handled correctly by the
> algorithm
>
> The C++ version gets through the benchmark more than 25000 times as
> quickly as the JS implementation.
>
> BUG=v8:5925, v8:5929, v8:4648
> R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
>
> Review-Url: https://codereview.chromium.org/2671233002
> Cr-Commit-Position: refs/heads/master@{#42975}
> Committed: 0f1c626d55TBR=cbruni@chromium.org,adamk@chromium.org,bmeurer@chromium.org,cwhan.tunz@gmail.com,caitp@igalia.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5925, v8:5929, v8:4648
Review-Url: https://codereview.chromium.org/2693753002
Cr-Commit-Position: refs/heads/master@{#43132}
Where the arguments have already been inlined, we can replace these
calls with a direct call. We have to make sure that the iteration over
the arguments is not observable.
Also factor out the large chunk of logic shared with
ReduceJSConstructWithSpread.
BUG=v8:5932
Change-Id: I6c4fac670028fbd8ca82c4474d4392231573bc49
Reviewed-on: https://chromium-review.googlesource.com/439329
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43039}
- Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
- Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
relies on std::memmove rather than accessing individual eleements.
- Fixes the case where copyWithin is invoked on a TypedArray with a
detached buffer.
- Add tests to ensure that +/-Infinity (for all 3 parameters) is handled correctly by the
algorithm
The C++ version gets through the benchmark more than 25000 times as
quickly as the JS implementation.
BUG=v8:5925, v8:5929, v8:4648
R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
Review-Url: https://codereview.chromium.org/2671233002
Cr-Commit-Position: refs/heads/master@{#42975}
Where the arguments have already been inlined, we can replace these calls with a
direct call to construct. We have to make sure that the iteration over the arguments is not observable.
BUG=v8:5895
Review-Url: https://codereview.chromium.org/2659623002
Cr-Commit-Position: refs/heads/master@{#42765}
The mentioned asserts did not work properly with interpreted and turbofanned functions.
To fix this issue %GetOptimizationStatus() now returns a set of flags instead of a single value.
This CL also adds more helper functions to mjsunit, like isNeverOptimize(), isAlwaysOptimize(),
isOptimized(fun), etc.
BUG=v8:5890
Review-Url: https://codereview.chromium.org/2654733004
Cr-Original-Commit-Position: refs/heads/master@{#42703}
Committed: d1ddec7857
Review-Url: https://codereview.chromium.org/2654733004
Cr-Commit-Position: refs/heads/master@{#42731}
