This patch declares a new rest parameter for the derived constructor,
and passes it to base constructor after calling PrepareSpreadArguments.
This patch also updates the test262.status to account for
the now passing test.
BUG=v8:4890
Review-Url: https://codereview.chromium.org/2056993004
Cr-Commit-Position: refs/heads/master@{#36939}
The busted logic caused us to go down the SCRIPT path internally,
causing us to fail the test262 tests that attempt to induce parse
errors at the top level.
R=littledan@chromium.org
BUG=v8:4985
Review-Url: https://codereview.chromium.org/2008743002
Cr-Commit-Position: refs/heads/master@{#36563}
Removes the DONT_DELETE enum bit from the properties to make them
configurable.
Also, updates the regress-typedarray-length test to --
- Check for true boolean return value on deletion of these
properties.
- Check for undefined return value on trying to access these
properties after deletion.
BUG=v8:4902
LOG=Y
Review-Url: https://codereview.chromium.org/2001393004
Cr-Commit-Position: refs/heads/master@{#36528}
Bootstrapper previously created %ThrowTypeError% before the strict
function maps existed, so making that function strict required a small
amount of code reordering.
This fixes a few test262 tests, but we're still non-compliant due to the
fact that we have two functions instead of one (see issue 4034).
BUG=v8:4925
LOG=y
Review-Url: https://codereview.chromium.org/2006733004
Cr-Commit-Position: refs/heads/master@{#36526}
Move it to HARMONY_STAGED from HARMONY_INPROGRESS.
Update test262.status now that case mapping tests are passing with
'--harmony' specified.
BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*,
mjsunit/string-case, intl/general/case*
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_noi18n_rel_ng
Review-Url: https://codereview.chromium.org/1990083002
Cr-Commit-Position: refs/heads/master@{#36379}
When I18N is enabled, use ICU's case conversion API and transliteration
API [1] to implement String.prototype.to{Upper,Lower}Case and
String.prototype.toLocale{Upper,Lower}Case.
* ICU-based case conversion was implemented in runtime-i18n.cc/i18n.js
* The above 4 functions are overridden with those in i18n.js when
--icu_case_mapping flag is turned on. To control the override by the flag,
they're overriden in icu-case-mapping.js
Previously, toLocale{U,L}Case just called to{U,L}Case so that they didn't
support locale-sensitive case conversion for Turkic languages (az, tr),
Greek (el) and Lithuanian (lt).
Before ICU APIs for the most general case are called, a fast-path for Latin-1
is tried. It's taken from Blink and adopted as necessary. This fast path
is always tried for to{U,L}Case. For toLocale{U,L}Case, it's only taken
when a locale (explicitly specified or default) is not in {az, el, lt, tr}.
With these changes, a build with --icu_case_mapping=true passes a bunch
of tests in test262/intl402/Strings/* and intl/* that failed before.
Handling of pure ASCII strings (aligned at word boundary) are not as fast
as Unibrow's implementation that uses word-by-word case conversion. OTOH,
Latin-1 input handling is faster than Unibrow. General Unicode input
handling is slower but more accurate.
See https://docs.google.com/spreadsheets/d/1KJCJxKc1FxFXjwmYqABS0_2cNdPetvnd8gY8_HGSbrg/edit?usp=sharing for the benchmark.
This CL started with http://crrev.com/1544023002#ps200001 by littledan@,
but has changed significantly since.
[1] See why transliteration API is needed for uppercasing in Greek.
http://bugs.icu-project.org/trac/ticket/10582
R=yangguo
BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*, mjsunit/string-case,
intl/general/case*
Review-Url: https://codereview.chromium.org/1812673005
Cr-Commit-Position: refs/heads/master@{#36187}
The ECMA 402 implementation previously pushed directly to real
Arrays, which risks having observably incorrect behavior in the
presence of monkey patching. This patch uses InternalArrays instead
to avoid that hazard.
R=jshin@chromium.org,yangguo@chromium.org
BUG=chromium:604299
LOG=N
Review-Url: https://codereview.chromium.org/1923803002
Cr-Commit-Position: refs/heads/master@{#35949}
Our implementation of the spec got one comparison wrong, at
step 19.d.iii (we were comparing against 'q' instead of 'p').
R=littledan@chromium.org
BUG=chromium:607566
LOG=n
Review-Url: https://codereview.chromium.org/1940643002
Cr-Commit-Position: refs/heads/master@{#35947}
- RegExp.prototype.toString() doesn't have any special handling of
RegExp instances and simply calls the source and flags getters
- Use the original values of global and sticky, rather than based
on the current flag getters, as specified in
https://github.com/tc39/ecma262/pull/494R=yangguo@chromium.org,adamk
LOG=Y
BUG=v8:4602
Review URL: https://codereview.chromium.org/1846303002
Cr-Commit-Position: refs/heads/master@{#35225}
Reason for revert:
TC39 decided that this compatibility fix should be standardized.
Original issue's description:
> Remove RegExp.prototype.source getter compat workaround
>
> The getter RegExp.prototype.source is specified in ES2015 to throw when
> called on a non-RegExp instance, such as RegExp.prototype. We had previously
> put in a compatibility workaround for all RegExp getters to make them
> throw on access specifically with RegExp.prototype as the receiver; however,
> we only have evidence that this is needed for properties other than source.
> This patch removes the compatibility workaround for get RegExp.prototype.source
> and gives it semantics precisely as per the ES2015 specification.
>
> R=adamk
> BUG=chromium:581577,v8:4827
> LOG=Y
>
> Committed: https://crrev.com/80803aa89e31839b8f73959776fa7e1923c6b461
> Cr-Commit-Position: refs/heads/master@{#35086}
R=adamk@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:581577,v8:4827
LOG=Y
Review URL: https://codereview.chromium.org/1847783003
Cr-Commit-Position: refs/heads/master@{#35180}
This patch adds fast paths for @@replace and @@split that call into
the old, side-effect free (and faster) versions of those builtin
operations when possible (roughly, when the receiver is a RegExp
and the 'exec' method is untampered). Also add some micro-optimizations
that further improve performance.
Taken altogether, this takes us from a ~70% regression on the Octane
RegExp benchmark to a ~9% regression.
The test262.status lines for RegExps has been reorganized to make it
clearer the status of individual tests. More work will likely be
required to increase spec compliance before the --harmony-regexp-exec
flag is shipped; some of that work is happening on the spec side.
BUG=v8:4602
LOG=y
Review URL: https://codereview.chromium.org/1836123002
Cr-Commit-Position: refs/heads/master@{#35118}
The getter RegExp.prototype.source is specified in ES2015 to throw when
called on a non-RegExp instance, such as RegExp.prototype. We had previously
put in a compatibility workaround for all RegExp getters to make them
throw on access specifically with RegExp.prototype as the receiver; however,
we only have evidence that this is needed for properties other than source.
This patch removes the compatibility workaround for get RegExp.prototype.source
and gives it semantics precisely as per the ES2015 specification.
R=adamk
BUG=chromium:581577,v8:4827
LOG=Y
Review URL: https://codereview.chromium.org/1837843002
Cr-Commit-Position: refs/heads/master@{#35086}
String.prototype.match is specified to call out to the current
value of RegExp.prototype[Symbol.match] when passed a string argument,
rather than the original value. This patch updates the RegExp code
to do that.
R=yangguo@chromium.org
BUG=v8:4602
LOG=Y
Review URL: https://codereview.chromium.org/1821773003
Cr-Commit-Position: refs/heads/master@{#35001}
src/js/regexp.js was one of the few files that was left in sloppy
mode. The ES2017 draft specification requires that writes to
lastIndex throw when the property is non-writable, and test262
tests enforce this behavior. This patch puts that file in strict
mode.
BUG=v8:4504
R=yangguo@chromium.org
LOG=Y
Review URL: https://codereview.chromium.org/1776883005
Cr-Commit-Position: refs/heads/master@{#34801}
This patch removes some [PASS, FAIL_OK] lines which consistently pass,
and it declares some tests to be test bugs as appropriate.
R=adamk
Review URL: https://codereview.chromium.org/1784063002
Cr-Commit-Position: refs/heads/master@{#34733}
- Make separate iterator functions for TypedArrays which do a type check
(and in the future should check for detached TypedArrays)
- Share the toString method with Arrays
BUG=v8:4785
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1780113002
Cr-Commit-Position: refs/heads/master@{#34698}
This check is guaranteed by the Promise spec and tested by test262
tests. It only has to run for subclasses. This patch adds the check
to the Promise code.
BUG=v8:4633
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1780823003
Cr-Commit-Position: refs/heads/master@{#34693}
This is because compiler.cc is awesome. There are cases where we do not
yet have a SharedFunctionInfo that can tell us whether we are compiling
a generator function, we query the FunctionLiteral instead.
R=rmcilroy@chromium.org
BUG=v8:4681
LOG=n
Review URL: https://codereview.chromium.org/1780193002
Cr-Commit-Position: refs/heads/master@{#34677}
This ensures our optimizing compilers as well as the interpreter are
never tasked with compiling the generator-resuming builtin methods. The
corresponding intrinsics for those methods are not supported and it is
not possible to provide a C++ reference implementation for them. We do
this by assigning builtin function ids to them that we can recognize
during the compiler dispatch.
Note that this also affects the interpreter, because methods having a
builtin function id assigned are not interpreted ({function_data} field
is overlapping). If this ever changes we can still do an early check in
the compiler dispatch (similar to the optimizing compilers) easily.
This applies to the following methods:
- Generator.prototype.next (calls Runtime_GeneratorNext).
- Generator.prototype.return (calls Runtime_GeneratorReturn).
- Generator.prototype.throw (calls Runtime_GeneratorThrow).
R=neis@chromium.org
BUG=v8:4681
LOG=n
Review URL: https://codereview.chromium.org/1779123003
Cr-Commit-Position: refs/heads/master@{#34675}
This ensures the interpreter is not tasked with compiling generator
functions. It currently does not support suspending activations at
yielding points, but we still want to be able to activate it for the
rest of JavaScript in the meantime.
R=rmcilroy@chromium.org
BUG=v8:4681
LOG=n
Review URL: https://codereview.chromium.org/1782013002
Cr-Commit-Position: refs/heads/master@{#34672}
The ES2015 specification requires that String.prototype.startsWith,
String.prototype.endsWith and String.prototype.includes use the IsRegExp
internal algorithm to determine whether to throw a TypeError to prevent
a RegExp from being accidentally cast to a String for those methods.
That internal algorithm checks the presence/truthiness of Symbol.match
to make its determination. This patch switches the builtins to use
this correct test, rather than checking for the [[RegExpMatcher]]
internal slot as the builtins previously did.
R=yangguo
Review URL: https://codereview.chromium.org/1762183002
Cr-Commit-Position: refs/heads/master@{#34547}
The ES2016 draft spec defines a sort of fast path for constructing
a TypedArray based on another TypedArray. This patch implements that
alternative path in TypedArray construction. It is verified by
test262 tests, which now pass. This patch also has a slight cleanup
of TypedArray code by using a macro for TypedArray type checks, as
is done for other types.
This patch includes a minor spec violation: In the same-type case, the
spec indicates that the underlying ArrayBuffer should be copied until
the end, and this is fixed up by making the [[ArrayLength]] shorter.
This is observable with the buffer getter. This patch just copies the
used part of the underlying ArrayBuffer.
R=adamk
BUG=v8:4726
LOG=Y
Review URL: https://codereview.chromium.org/1754593003
Cr-Commit-Position: refs/heads/master@{#34443}
Fixes a bug in the constant pool padding calculation.
BUG=v8:4680
LOG=N
Review URL: https://codereview.chromium.org/1749853002
Cr-Commit-Position: refs/heads/master@{#34403}
This patch fixes %TypedArray%.from to follow the ES2016 draft spec
more precisely. Specifically, the input is first converted to an
ArrayLike, and then afterwards, the mapping function is run and the
results written into the TypedArray. This fixes a test262 test.
R=adamk
LOG=Y
BUG=v8:4782
Review URL: https://codereview.chromium.org/1743463004
Cr-Commit-Position: refs/heads/master@{#34373}
Moves skips to explicit fails and groups errors be failure reason. Almost all failures
are due to lack of generator support.
BUG=v8:4680
LOG=N
TBR=oth@chromium.org
Review URL: https://codereview.chromium.org/1740843003
Cr-Commit-Position: refs/heads/master@{#34334}
Reason for revert:
An Intl change that this depends on breaks a bot
Original issue's description:
> Test262 roll, 2016-2-23
>
> R=adamk
>
> Committed: https://crrev.com/34492040fbfb04fead21416245c8696b9847e751
> Cr-Commit-Position: refs/heads/master@{#34312}
TBR=adamk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1736223002
Cr-Commit-Position: refs/heads/master@{#34313}
There was a bug in for-of loops without newly declared variables: If,
in performing the assignment, an exception were thrown, then
IteratorClose would not be called. The problem was that the assignment
is done as part of assign_each, which happens before the loop is put
back in the state which is recognized to be breaking/throwing/returning
early.
This patch modifies the for-of desugaring by setting the loop state
before, rather than after, evaluating the assign_each portion, which is
responsible for evaluating the assignment in for-of loops which do not
have a declaration.
This patch, together with https://codereview.chromium.org/1728973002 ,
allow all test262 iterator return-related tests to pass.
R=rossberg
BUG=v8:4776
LOG=Y
Review URL: https://codereview.chromium.org/1731773003
Cr-Commit-Position: refs/heads/master@{#34262}
In the for-of desugaring, IteratorClose is a subtle thing to get right.
When return exists, the logic for which exception to throw is as follows:
1. Get the 'return' property and property any exception that might come from
the property read
2. Call return, not yet propagating an exception if it's thrown.
3. If we are closing the iterator due to an exception, propagate that error.
4. If return threw, propagate that error.
5. Check if return's return value was not an object, and throw if so
Previously, we were effectively doing step 5 even if an exception "had already
been thrown" by step 3. Because this took place in a finally block, the exception
"won the race" and was the one propagated to the user. The fix is a simple change
to the desugaring to do step 5 only if step 3 didn't happen.
R=rossberg
BUG=v8:4775
LOG=Y
Review URL: https://codereview.chromium.org/1728973002
Cr-Commit-Position: refs/heads/master@{#34261}
This patch moves for-of closing to staging. There are a couple of
minor semantics bugs remaining in finalization along edge cases, but
we don't know of any stability issues.
BUG=v8:3566
R=rossberg
LOG=Y
Review URL: https://codereview.chromium.org/1725203002
Cr-Commit-Position: refs/heads/master@{#34254}
A recent ES2016 draft spec clarification indicates that, if -0 is
passed into Array.prototype.indexOf or Array.prototype.lastIndexOf
as the starting index, and the result is found at index 0, then +0
rather than -0 should be returned. This patch ensures that V8 has
that result, which is consistent with what some other browsers
return. The patch allows a couple test262 tests to pass.
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1729653002
Cr-Commit-Position: refs/heads/master@{#34229}
It turns out that some old polyfill library uses
RegExp.prototype.flags as a way of feature testing. It's not clear
how widespread this is. For now, as a minimal workaround, we can
return undefined from getters like RegExp.prototype.global when
the receiver is RegExp.prototype. This patch implements that strategy
but omits a UseCounter to make backports easier.
R=adamk
CC=yangguo@chromium.org
BUG=chromium:581577
LOG=Y
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1640803003
Cr-Commit-Position: refs/heads/master@{#34201}
The Proxy enumerate trap and Reflect.enumerate are removed from the
ES2016 draft specification. This patch removes the Reflect.enumerate
function, and a follow-on patch will be responsible for the Proxy
trap changes.
R=adamk
LOG=Y
BUG=v8:4768
Review URL: https://codereview.chromium.org/1721453002
Cr-Commit-Position: refs/heads/master@{#34196}
In ES2015, Date.prototype.toGMTString is simply an alias of
Date.prototype.toUTCString, so it has the same identity as a function and
doesn't have its own name. Firefox has already shipped this behavior.
Previously, we copied JSC behavior by making it a separate function.
This change makes an addition test262 test pass.
BUG=v8:4708
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1709373002
Cr-Commit-Position: refs/heads/master@{#34131}
Adds support for ES6 super keyword and performing loads, stores, and
calls to super class members.
Implements SetHomeObject and enables ThisFunctionVariable.
BUG=v8:4280,v8:4682
LOG=N
Review URL: https://codereview.chromium.org/1689573004
Cr-Commit-Position: refs/heads/master@{#33977}
This patch moves Symbol.species support to the "experimental JavaScript
features" flag. While @@species is still a performance hit, it doesn't seem
like it would make the web unusably slow; shipping would still have to
wait on fixing the performance regression, but staging this version should
yield valuable web compatibility information.
R=cbruni
BUG=v8:4093
LOG=Y
Review URL: https://codereview.chromium.org/1678143002
Cr-Commit-Position: refs/heads/master@{#33827}
Adds implementation and tests to support const/let variables in the
interpreter.
BUG=v8:4280,v8:4679
LOG=N
Review URL: https://codereview.chromium.org/1634153002
Cr-Commit-Position: refs/heads/master@{#33819}
Note: This is currently only used by yield*, we still need to support it in
other places (such as for-of loops). It can be used manually of course.
(This CL does not touch the full-codegen implementation of yield* because that
code is already dead. The yield* desugaring already supports return and doesn't
need to be touched.)
BUG=v8:3566
LOG=y
Review URL: https://codereview.chromium.org/1639343005
Cr-Commit-Position: refs/heads/master@{#33744}
Adds implementation and tests for with statement to interprter.
BUG=v8:4280,v8:4684
LOG=N
Review URL: https://codereview.chromium.org/1656863002
Cr-Commit-Position: refs/heads/master@{#33705}
This patch stages the first part of RegExp subclassing--defining
Symbol.{match,replace,search,split}, but keeping their original
definitions which are restricted to a RegExp receiver and do not
call out to the core 'exec' method. This is being staged separately
because the two sets of extension points are separate features with
separate functionality. The amount of behavior which is held behind
the flag is very small, just exposing the symbols as properties of
Symbol--the behavior that the String methods call out to these Symbol
properties has already been shipping unflagged.
R=yangguo@chromium.org
BUG=v8:4305,v8:4343,v8:4344,v8:4345
LOG=Y
Review URL: https://codereview.chromium.org/1637703003
Cr-Commit-Position: refs/heads/master@{#33534}
This makes it easier to see what behavior each test is verifying.
BUG=v8:3699
LOG=n
Review URL: https://codereview.chromium.org/1638853003
Cr-Commit-Position: refs/heads/master@{#33529}
This fixes corner cases where the start offsets of exception handler
regions within the handler table fall together. This assumption was
based on full-codegen code and no longer holds with the interpreter.
The tables however are still well nested and code has been added to
verify that in debug mode.
R=rmcilroy@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1633573002
Cr-Commit-Position: refs/heads/master@{#33495}
The current support for try-catch in the interpreter can handle most of
the cases appearing in our test suite. Also the flag in question did not
detect try-finally constructs. This removes the flag and instead extends
the test expectations.
R=rmcilroy@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1631593003
Cr-Commit-Position: refs/heads/master@{#33494}
The web appears to depend on being able to redeclare functions-in-blocks
in sloppy mode (examples seen so far tend to redeclare identical functions,
most likely accidentally).
This patch opens a minimal hole: two same-named function declarations
in the same scope are allowed, only in sloppy mode.
BUG=v8:4693, chromium:579395
LOG=y
Review URL: https://codereview.chromium.org/1622723003
Cr-Commit-Position: refs/heads/master@{#33478}
These tests have been disabled while support for try-finally was work in
progress. By now control flow is connected properly and the tests pass.
R=oth@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1626503002
Cr-Commit-Position: refs/heads/master@{#33474}
This implements a first prototype of stack unwinding for interpreted
frames. The unwinding machinery performs a range-based lookup in the
given handler table and potentially continues dispatching at the handler
offset. Note that this does not yet correctly restore the context to the
correct value when the handler is being entered.
R=rmcilroy@chromium.org,oth@chromium.org
BUG=v8:4674
LOG=n
Review URL: https://codereview.chromium.org/1605633003
Cr-Commit-Position: refs/heads/master@{#33414}
This is to fix some of the failing test262 tests with ignition flag.
In few test262 tests, there is a throw from the script scope. Rewriter::Rewrite
pass converts expression statements into assignment statements in script scope.
This causes interpreter to fail because assignment expression expects a result
in accumulator but throw statement does not return a value. To fix this, we
now mark that accumulator contains a value when visiting throw statement.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1523423003
Cr-Commit-Position: refs/heads/master@{#33408}
Now that we support eval in Ignition, remove the fallback for eval checks
and make the flag only fallback on catch blocks.
BUG=v8:4280,v8:4676
LOG=N
Review URL: https://codereview.chromium.org/1595223004
Cr-Commit-Position: refs/heads/master@{#33384}
The bulk of these were marked simply '[PASS]', while one was marked
'[PASS, FAIL]' but seems to always pass.
BUG=v8:3305, v8:4405
LOG=n
Review URL: https://codereview.chromium.org/1584863003
Cr-Commit-Position: refs/heads/master@{#33277}
This patch moves the semantics of 'const' in sloppy mode to match those
in strict mode, that is, const makes lexical (let-like) bindings, must
have an initializer, and does not create properties of the global object.
R=adamk
LOG=Y
BUG=v8:3305
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1571873004
Cr-Commit-Position: refs/heads/master@{#33218}
As V8 becomes more and more spec-compliant, Promise polyfill libraries
like core.js expect fully correct. However, our Promises do not yet
support Symbol.species. Therefore, a case like
```
var test = new Promise(function(){});
test.constructor = function(){};
Promise.resolve(test)
```
would lead to an unhandled Promise rejection, whereas it should not
because test.constructor[Symbol.species] is undefined, so test.then
should end up constructing %Promise% as a fallback, rather than
calling test.constructor as if it were a constructor, which leads
this error checking code to throw.
For now, this patch removes the error checking code (which was not
present until recently). In an interactive test using core.js, the
error message on the console goes away with this patch. When @@species
support is in place, this patch can be reverted. A regression test
is added which checks for the same thing.
Partially reverted patch was originally out for review at
https://codereview.chromium.org/1531073004
BUG=v8:4633
LOG=Y
R=adamk,caitp88@gmail.com
Review URL: https://codereview.chromium.org/1578893002
Cr-Commit-Position: refs/heads/master@{#33217}
Does not remove the extra private state added, as doing so seems to break the
debugger.
Fixes new Test262 tests:
- built-ins/Promise/race/same-resolve-function
- built-ins/Promise/race/same-reject-function
BUG=v8:4632
LOG=N
R=littledan@chromium.org, cbruni@chromium.org
Review URL: https://codereview.chromium.org/1538853002
Cr-Commit-Position: refs/heads/master@{#33214}
Testing the promise status is not enough to ensure that resolve functions are
called only once.
This change adds a similar version of the [[AlreadyResolved]] slot to the
Promise.all resolve element function, and also ensures that [[AlreadyResolved]]
is respected in the Promise executor, and when resolving thenables. This means
replacing PromiseReject() shortcuts with promiseCapability.reject(), which has
an [[AlreadyResolved]] record in a context slot.
Also ensures that changes to the list accumulator in Promise.all() is not observable
via accessors installed in the Array prototype chain, using the same mechanism used
in several Array methods.
Fixes the following Test262 tests:
- built-ins/Promise/all/call-resolve-element-items.js
- built-ins/Promise/all/call-resolve-element.js
- built-ins/Promise/all/call-resolve-element-after-return.js
- built-ins/Promise/all/same-reject-function.js
- built-ins/Promise/all/resolve-from-same-thenable.js
- built-ins/Promise/all/resolve-before-loop-exit.js
- built-ins/Promise/all/resolve-before-loop-exit-from-same.js
- built-ins/Promise/exception-after-resolve-in-executor.js
- built-ins/Promise/exception-after-resolve-in-thenable-job.js
- built-ins/Promise/all/does-not-invoke-array-setters.js
BUG=v8:4633
LOG=N
R=littledan@chromium.org, cbruni@chromium.org
Review URL: https://codereview.chromium.org/1534813005
Cr-Commit-Position: refs/heads/master@{#33163}
Addresses TODO by Dan --- simply by moving the check and exception
earlier in the function, before calling NewPromiseCapability() or
loading the constructor.
BUG=v8:4633
LOG=N
R=adamk@chromium.org, littledan@chromium.org, cbruni@chromium.org
Fixes 'test262/built-ins/Promise/prototype/then/context-check-on-entry'
Review URL: https://codereview.chromium.org/1561193002
Cr-Commit-Position: refs/heads/master@{#33137}
Correctly validate promise capabilities in NewPromiseCapabilities() and in
GetCapabilitiesExtractor(). Also explicitly follows Promise.race step 2 and
similar cases in the spec, rather than passing tests asserting these steps
are taken in NewPromiseCapability
Also changes Promise.reject to match specification.
Fixes the following test262 tests:
- built-ins/Promise/all/capability-executor-called-twice.js
- built-ins/Promise/all/capability-executor-not-callable.js
- built-ins/Promise/prototype/then/capability-executor-called-twice.js
- built-ins/Promise/prototype/then/capability-executor-not-callable.js
- built-ins/Promise/reject/capability-executor-called-twice.js
- built-ins/Promise/reject/capability-executor-not-callable.js
- built-ins/Promise/resolve/capability-executor-called-twice.js
- built-ins/Promise/resolve/capability-executor-not-callable.js
- built-ins/Promise/race/capability-executor-called-twice.js
- built-ins/Promise/race/capability-executor-not-callable.js
- built-ins/Promise/reject/S25.4.4.4_A3.1_T1.js
- built-ins/Promise/race/S25.4.4.3_A3.1_T2.js
Per v8:3641, mjsunit/es6/debug-promises/throw-with-undefined-reject.js becomes invalid. The exception is thrown before the chain handler is ever invoked, and is caught externally by d8's own handler --- thus evading the uncaught exception event.
BUG=v8:4633, v8:4631, v8:4243, v8:3641
LOG=N
R=littledan@chromium.org, cbruni@chromium.org
Review URL: https://codereview.chromium.org/1531073004
Cr-Commit-Position: refs/heads/master@{#33128}
Throws an error if rest parameters are used. This feature is not
yet supported in interpreter.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1561603002
Cr-Commit-Position: refs/heads/master@{#33120}
This patch relands a change to ES2015 Promises which brings us closer to
spec compliance. In this new version, a bug which would lose async callstack
data was fixed.
R=adamk
CC=rossberg,caitp
LOG=Y
BUG=v8:3641
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1538663002
Cr-Commit-Position: refs/heads/master@{#33065}
When the 'y' flag was shipped, the property RegExp.prototype.unicode was
accidentally also shipped. However, the existence of this property should
be a usable feature testing point. This patch adds the 'unicode' getter on
RegExp.prototype only if the --harmony-regexp-unicode flag is turned on.
R=cbruni
CC=yangguo
BUG=v8:4644
LOG=Y
Review URL: https://codereview.chromium.org/1550713002
Cr-Commit-Position: refs/heads/master@{#33049}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
Cr-Commit-Position: refs/heads/master@{#33042}
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33044}
Reason for revert:
Breaks arm64 sim nosnap: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug/builds/805/steps/Check/logs/function-bind
Original issue's description:
> [runtime] Introduce dedicated JSBoundFunction to represent bound functions.
>
> According to the ES2015 specification, bound functions are exotic
> objects, and thus don't need to be implemented as JSFunctions. So
> we introduce a new JSBoundFunction type to represent bound functions
> and make them optimizable. This already improves the performance of
> calling or constructing bound functions by 10-100x depending on the
> use case because we avoid the crazy dance between JavaScript and C++
> that was implemented in v8natives.js previously.
>
> There's still room for improvement in the performance of actually
> creating bound functions, which is also relevant in practice, but
> we already have a plan how to accomplish that later.
>
> The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
>
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
> BUG=chromium:535408, chromium:571299, v8:4629
> LOG=n
>
> Committed: https://crrev.com/ca8623eaa468cba65a5adafcdfb4615966f43ce2
> Cr-Commit-Position: refs/heads/master@{#33042}
TBR=cbruni@chromium.org,hpayer@chromium.org,yangguo@chromium.org,akos.palfi@imgtec.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:535408, chromium:571299, v8:4629
Review URL: https://codereview.chromium.org/1552473002
Cr-Commit-Position: refs/heads/master@{#33043}
According to the ES2015 specification, bound functions are exotic
objects, and thus don't need to be implemented as JSFunctions. So
we introduce a new JSBoundFunction type to represent bound functions
and make them optimizable. This already improves the performance of
calling or constructing bound functions by 10-100x depending on the
use case because we avoid the crazy dance between JavaScript and C++
that was implemented in v8natives.js previously.
There's still room for improvement in the performance of actually
creating bound functions, which is also relevant in practice, but
we already have a plan how to accomplish that later.
The mips/mips64 ports were contributed by akos.palfi@imgtec.com.
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
BUG=chromium:535408, chromium:571299, v8:4629
LOG=n
Review URL: https://codereview.chromium.org/1542963002
Cr-Commit-Position: refs/heads/master@{#33042}
We'll be able to optimize rest parameters in TurboFan similarly to the arguments array. This CL restores the previous behavior, and a follow-on will enable TurboFan optimization.
(TBR for rossberg since we discussed the revert beforehand. The only changes are a few lines related to tests and rebasing.)
TBR=rossberg@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1537683002
Cr-Commit-Position: refs/heads/master@{#33024}
Consecutive registers are allocated in two passes. First we "reserve"
a set of registers and these get allocated when we actually use them.
If we request for a temporary register before we use all the consecutive
registers, the earlier implementation does not gaurantee that it allocates
outside the reservation for consecutive registers. This could cause problems
for example, in call_func(a, b++, c). This cl fixes
TemporaryRegisterScope::NewRegister, to return a new temporary register
outside the reservation for consecutive registers.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1531273002
Cr-Commit-Position: refs/heads/master@{#33005}
This fixes a path in the compilation pipeline that side-stepped the
interpreter when a function literal was eagerly compiled. This caused
the interpreter to miss some test coverage.
R=rmcilroy@chromium.org
Review URL: https://codereview.chromium.org/1528853002
Cr-Commit-Position: refs/heads/master@{#32867}
This CL tries to correctly support the following:
- stringifying a proxy,
- stringifying with a proxy as replacer (callable or arraylike),
- stringifying with a replacer that returns a proxy,
- parsing with a callable proxy as reviver,
- parsing with a reviver that inserts proxies into the object,
- and whatever else you can imagine.
This also fixes some bugs observable without proxies.
BUG=v8:3139,v8:1543
LOG=n
Review URL: https://codereview.chromium.org/1515133002
Cr-Commit-Position: refs/heads/master@{#32843}
This is behind the --harmony-function-name flag, currently disabled.
With the flag enabled, we now pass the relevant tests in
language/statements/*/fn-name-*.
BUG=v8:3699
LOG=y
Review URL: https://codereview.chromium.org/1518873004
Cr-Commit-Position: refs/heads/master@{#32817}
ECMAScript dates act as if the Gregorian changeover happened at the
beginning of time. This patch fixes up internationalized date
formatting to set that changeover properly, as opposed to the ICU
default which is in the 16th century.
BUG=chromium:537382
R=adamk,cira
LOG=Y
Review URL: https://codereview.chromium.org/1501113002
Cr-Commit-Position: refs/heads/master@{#32669}
In this new version of test262, a number of known failing tests have
been changed to match the ES2016 semantics, which V8 implements.
R=adamk
Review URL: https://codereview.chromium.org/1475793004
Cr-Commit-Position: refs/heads/master@{#32303}
In a function expression, 'yield' is allowed, even if the expression
occurs inside a generator. Similarly, even in a non-generator,
a generator expression's name must not be 'yield'.
BUG=v8:3983
LOG=n
Review URL: https://codereview.chromium.org/1460393003
Cr-Commit-Position: refs/heads/master@{#32188}
- Removed PASS/FAIL line for arrow/rest params test which should now pass.
- Moved soon-to-be-changed tests about built-in prototypes as plain objects
to INVALID section (and noted that they'll be fixed with the
next test262 roll).
R=littledan@chromium.org
Review URL: https://codereview.chromium.org/1450243002
Cr-Commit-Position: refs/heads/master@{#32020}
Adds a blacklist of tests which are currently unsupported or broken in Ignition to
the mjsunit and test262 test status.
Also removes --ignition-script-filter flag, and adds a
--ignition_fallback_on_eval_and_catch flag which fallsback to fullcodegen for
functions which call eval or contain a catch block.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1420963009
Cr-Commit-Position: refs/heads/master@{#31864}
Since enabling destructuring already implies enabling default parameters,
there's not a good way to separate these two. Luckily, they're both
feature-complete (save for destructuring assignment).
This causes us to pass an additional 24 test262 tests.
BUG=v8:811, v8:2160
LOG=y
Review URL: https://codereview.chromium.org/1407393009
Cr-Commit-Position: refs/heads/master@{#31844}
Many places in the JavaScript standard library are changed in ES2015 from
getting an integer using ToUint32 to using ToLength. This patch stages
the flag turning on those new semantics.
BUG=v8:3087,v8:4244
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1426673003
Cr-Commit-Position: refs/heads/master@{#31641}
When == is invoked on a Symbol or SIMD vector and an object, the object should
be converted to a primitive with ToPrimitive and then compared again. This means,
for example, that for a Symbol or SIMD vector s, s == Object(s). This patch makes
that change in the implementation of ==. Only the runtime function needed to be
changed, as the code stubs and compiler specializations don't operate on Symbols
or SIMD vectors, and on these types, a fallback to the runtime function is always
used.
BUG=v8:3593
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1421413002
Cr-Commit-Position: refs/heads/master@{#31614}
This patch switches sloppy-mode code from legacy const semantics
to ES2015 semantics. It is unknown how much of the web will be
broken by this; likely the patch will have to be reverted before
a branch happens.
BUG=v8:3739
LOG=Y
R=rossberg,adamk
Review URL: https://codereview.chromium.org/1420223003
Cr-Commit-Position: refs/heads/master@{#31525}
For now, only rewire builtins in v8natives.js to call the new runtime functions.
Review URL: https://codereview.chromium.org/1409613004
Cr-Commit-Position: refs/heads/master@{#31413}
Even though the change is ES6 spec compliant, we decided to revert
to be consistent with other browsers and work on fixing the spec.
Original issue's description:
> Make dates default to the local timezone if none specified
>
> In ES5, dates were supposed to default to UTC if no timezone was specified. However, this changed in ES6, which specified that dates should be in the local timezone if no timezone was specified. This CL updates our behavior to match that part of the ES6 spec.
> BUG=chromium:391730, v8:4242
> LOG=Y
> Committed: https://crrev.com/f06754a8e1d305a43560705f6c167d85d40e602d
> Cr-Commit-Position: refs/heads/master@{#29854}
BUG=chromium:543320,chromium:539813
LOG=NO
Review URL: https://codereview.chromium.org/1403153003
Cr-Commit-Position: refs/heads/master@{#31295}
Reason for revert:
This still breaks Inbox.
Original issue's description:
> Stage --harmony_sloppy_function
>
> This patch turns on ES2015-style function hoisting semantics in
> staging. --harmony_sloppy_function was previously staged, leading
> to a number of bugs being filed and the staging being reversed;
> important bugs have been fixed, so it is time to try again.
>
> R=adamk
> LOG=Y
> BUG=v8:4285
>
> Committed: https://crrev.com/333e27fd99f8187c97e62b9538529900f0a30668
> Cr-Commit-Position: refs/heads/master@{#31190}
TBR=adamk@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4285
Review URL: https://codereview.chromium.org/1402763003
Cr-Commit-Position: refs/heads/master@{#31206}
This patch turns on ES2015-style function hoisting semantics in
staging. --harmony_sloppy_function was previously staged, leading
to a number of bugs being filed and the staging being reversed;
important bugs have been fixed, so it is time to try again.
R=adamk
LOG=Y
BUG=v8:4285
Review URL: https://codereview.chromium.org/1393423002
Cr-Commit-Position: refs/heads/master@{#31190}
This patch brings test262 up to the latest version on GitHub. Some
highlights from new failures are:
- Reflect
- Default parameters
- Case conversion edge cases
R=adamk
Review URL: https://codereview.chromium.org/1391793002
Cr-Commit-Position: refs/heads/master@{#31165}
* Promise.resolve is now works with subclasses
* Spec removed [[PromiseConstructor]] now can simply use constructor
* Promise.resolve ignores species
R=littledan@chromium.org,domenic@chromium.org
BUG=v8:4161,v8:4341
LOG=Y
Review URL: https://codereview.chromium.org/1362773002
Cr-Commit-Position: refs/heads/master@{#31116}
This patch prohibits lexical bindings from being called 'let', even in
sloppy mode, following the ES2015 specification. The change affects
multiple cases of lexical bindings, including simple let/const declarations
and both kinds of for loops. var and legacy const bindings still permit
the name to be let, including in destructuring cases. Tests are added to
verify, though some cases are commented out since they led to (pre-existing)
crashes.
BUG=v8:4403
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1371263003
Cr-Commit-Position: refs/heads/master@{#31115}
Besides matching the spec, this matches the behavior of Firefox and Edge.
BUG=v8:3699
LOG=n
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1377603006
Cr-Commit-Position: refs/heads/master@{#31030}
The current implemention breaks sloppy mode code that uses function
declarations inside blocks at top-level. Work is ongoing on a patch
to fix this issue, but in the meantime it seems reasonable to move
the feature out of staging.
Manual revert of commit 6e07f5a75b.
R=littledan@chromium.org
BUG=chromium:535836
LOG=y
Review URL: https://codereview.chromium.org/1375213005
Cr-Commit-Position: refs/heads/master@{#31029}
Looks like we never ran test262-es6 on mac. After merging
into test262 we've got these failures. Skipping for now.
BUG=v8:4437
LOG=n
NOTRY=true
NOTREECHECKS=true
TBR=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1372603002
Cr-Commit-Position: refs/heads/master@{#30937}
This is a change for ES2015. Date objects have mutable state, so having
a mutable prototype is bad for SES requirements, and it is an
inconsistency from the typical ES2015 class style of objects
BUG=v8:4004
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1317403002
Cr-Commit-Position: refs/heads/master@{#30486}
In ES5, dates were supposed to default to UTC if no timezone was specified. However, this changed in ES6, which specified that dates should be in the local timezone if no timezone was specified. This CL updates our behavior to match that part of the ES6 spec.
BUG=chromium:391730, v8:4242
LOG=Y
Review URL: https://codereview.chromium.org/1229903004
Cr-Commit-Position: refs/heads/master@{#29854}
$toLength is slow, causing a 3.8%-8% regression in the Octane RegExp
benchmark. Reverting this patch brings it back up. To make this change,
we'll need a faster implementation fo $toLength.
BUG=chromium:513160
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1243053005
Cr-Commit-Position: refs/heads/master@{#29830}
ES2015 made a change vs ES5, where the "lastIndex" property of a
RegExp (which can be modified by a user to start the next search at
a different location) is cast to an integer with ToLength rather
than ToInteger. The main difference is on negative numbers, and
this is tested by test262. This patch implements that change on
RegExps and enables the test262 test now that it passes.
R=adamk
LOG=Y
BUG=v8:4244
Review URL: https://codereview.chromium.org/1241713004
Cr-Commit-Position: refs/heads/master@{#29715}
This fixes the graph wiring of implicit JSToNumber nodes inserted by
JSTypedLowering, to be correctly hooked into a surrounding exceptional
continuation.
R=bmeurer@chromium.org
TEST=mjsunit/compiler/try-binop,test262
Review URL: https://codereview.chromium.org/1178153004
Cr-Commit-Position: refs/heads/master@{#28975}
In ES6 Object.getOwnPropertyDescriptor should call ToObject, which
means that primitive values will return descriptors from the wrapper.
BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/998163004
Cr-Commit-Position: refs/heads/master@{#27569}
This reverts commit 992751d0dc.
The final spec for Object.getPrototypeOf calls ToObject on the
parameter, which means that it should only throw for null and
undefined. For other non object values the prototype of the wrapper
should be used.
Difference from last time: Updated .status and will disable Blink
side tests as needed.
BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1051523003
Cr-Commit-Position: refs/heads/master@{#27558}
Reason for revert:
Layout test failures. Please update layout test expectations before landing this, in order to not block the roll.
Original issue's description:
> [es6] Object.getPrototypeOf should work with values
>
> The final spec for Object.getPrototypeOf calls ToObject on the
> parameter, which means that it should only throw for null and
> undefined. For other non object values the prototype of the wrapper
> should be used.
>
> BUG=v8:3964
> LOG=N
> R=adamk, rossberg@chromium.org
>
> Committed: https://crrev.com/ea463a916bbe5994b0d2d04e8075058b373b2e2c
> Cr-Commit-Position: refs/heads/master@{#27354}
TBR=adamk@chromium.org,rossberg@chromium.org,arv@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3964
Review URL: https://codereview.chromium.org/1033623002
Cr-Commit-Position: refs/heads/master@{#27389}
The final spec for Object.getPrototypeOf calls ToObject on the
parameter, which means that it should only throw for null and
undefined. For other non object values the prototype of the wrapper
should be used.
BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
Review URL: https://codereview.chromium.org/1014813003
Cr-Commit-Position: refs/heads/master@{#27354}
ES6 specs the function length property (it was not part of ES5) and
it makes it configurable.
BUG=v8:3045
LOG=N
R=mstarzinger@chromium.org, adamk@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/993073002
Cr-Commit-Position: refs/heads/master@{#27190}
This removes the duplicate property check from object literals.
Instead we repurpose the ObjectLiteralChecker into two cases, implemented
by two subclasses to ObjectLiteralCheckerBase called ObjectLiteralChecker
and ClassLiteralChecker.
The object literal checker now only checks for duplicate __proto__ fields in
object literals.
The class literal checker checks for duplicate constructors, non constructor
fields named constructor as well as static properties named prototype.
BUG=v8:3819
LOG=Y
R=adamk, dslomov@chromium.org
Review URL: https://codereview.chromium.org/873823003
Cr-Commit-Position: refs/heads/master@{#26336}
Important notices:
- The snapshot cannot be created for big-endian target in cross-compilation
environment on little-endian host using simulator.
- In order to have i18n support working on big-endian target, the icudt46b.dat and
icudt46b_dat.S files should be generated and upstreamed to ICU repo.
- The mjsunit 'nans' test is endian dependent, it is skipped for mips target.
- The zlib and Mandreel from Octane 2.0 benchmark are endian dependent due to
use of typed arrays.
TEST=
BUG=
R=jkummerow@chromium.org, plind44@gmail.com
Review URL: https://codereview.chromium.org/228943009
Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20778 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This moves the __proto__ property to Object.prototype and turns it into
a callback property actually present in the descriptor array as opposed
to a hack in the properties lookup. For now it still is a "magic" data
property using foreign callbacks and not an accessor property visible to
JavaScript.
The second effect of this change is that JSON.parse() no longer treats
the __proto__ property specially, it will be defined as any other data
property. Note that object literals still have their special handling.
R=rossberg@chromium.org
BUG=v8:621,v8:1949,v8:2441
TEST=mjsunit,cctest,test262
Review URL: https://codereview.chromium.org/12212011
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13728 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
In the traditional MIPS naming scheme, "mips" is used for
big-endian mips and "mipsel" is used for little-endian mips.
In V8 the "mips" build is little-endian, so the "mips" target is
renamed to "mipsel" to be compliant with the traditional MIPS
naming scheme.
This change is also required for supporting the Chromium project on MIPS.
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/10695114
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12047 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Removes 6 out of 8 of our remaining unintentional failures on test262.
Also fixes treatment of inherited setters added after the fact.
Specifically:
- In the runtime, when looking for setter callbacks in the prototype chain,
also look for read-only properties. If one is found, reject (exception in
strict mode). If a proxy is found, invoke proper trap.
Note: this folds in the CanPut function from the spec and avoids an extra
lookup over the prototype chain.
- In generated code for stores, insert a test for the maps from the prototype
chain, but only up to the object where the property already exists (which
may be the object itself).
In Hydrogen, if the found property is read-only or not cacheable (e.g. a
proxy), bail out; in a stub, generate an unconditional miss (to get an
exception in strict mode).
- Add test cases and adapt existing test expectations.
R=mstarzinger@chromium.org
BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/10388047
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11694 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The two tests (S8.5_A2.1, S8.5_A2.2) fail on ia32 Linux and simulators.
They do pass on ARM and MIPS hardware under Linux, and on the other
supported platforms and architectures.
They are now marked PASS || FAIL_OK.
BUG=
TEST=test262/S8.5_A2.1, test262/S8.5_A2.2
Review URL: https://chromiumcodereview.appspot.com/9959146
Patch from Paul Lind <plind44@gmail.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
According to ES5 10.4.2(3), eval calls of strict code always require
their own lexical and variable environment. For now we just add a new
scope when we parse the strict mode directive. The clean solution would
be to always have this sope present (even for global eval calls) and
adapt variable binding to cope with that.
R=rossberg@chromium.org
BUG=v8:1624
TEST=mjsunit/regress/regress-1624,test262/S10.4.2.1_A1
Review URL: https://chromiumcodereview.appspot.com/9703021
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This allows elements of the non-strict arguments object to be redefined
with custom attributes and still maintain an alias into the context.
Such a slow alias is maintained by placing a special marker into the
dictionary backing store of the arguments object.
R=rossberg@chromium.org
BUG=v8:1772
TEST=test262,mjsunit/object-define-property
Review URL: https://chromiumcodereview.appspot.com/9460004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10827 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This refactors the way we (re)define elements to perform normalization
and attribute updating at a much deeper level, thereby removing some
bogus special cases in upper runtime layers.
Most element setters take an indicator flag that distinguishes between
setting and defining. Setting of an element causes attributes to remain
unchanged, writability to be checked and callbacks to be called.
Defining of an element causes attributes to be updated and callbacks to
be overridden. The same approach could be taken for properties.
R=svenpanne@chromium.org
BUG=v8:1772
TEST=test262,test262/15.2.3.6-4-333-11
Review URL: https://chromiumcodereview.appspot.com/9443014
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10808 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
We use foreign callbacks to make some properties shadow internal values
but still behave as data properties from within JavaScript. This means
when a value is passed to Object.defineProperty() on such a property,
it should update the internal value instead of redefinind the property
and destroying the shadowing.
R=rossberg@chromium.org
BUG=v8:1530
TEST=mjsunit/regress/regress-1530,test262/S15.3.3.1_A4
Review URL: http://codereview.chromium.org/8996008
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This introduces an additional check into the StoreIC_ArrayLength builtin
checking that the array still has fast properties. Redifinitions of the
length property that would cause it's type or attributes to change, will
switch to slow properties, thereby invalidating said optimization.
R=svenpanne@chromium.org
BUG=v8:1756
TEST=test262
Review URL: http://codereview.chromium.org/8895025
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This also refactors the way we set the length of an arrays' backing
store to use the new elements accessor interface. The actual fix is in
DictionaryElementsAccessor::SetLengthWithoutNormalize() where we first
search for non-deletable elements according to ES5 section 15.4.5.2
specifications.
Snippet from the specification: Attempting to set the length property of
an Array object to a value that is numerically less than or equal to the
largest numeric property name of an existing array indexed non-deletable
property of the array will result in the length being set to a numeric
value that is one greater than that largest numeric property name.
R=danno@chromium.org
TEST=test262/15.4.4.??-7-b-16
Review URL: http://codereview.chromium.org/8372064
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9911 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This fixes Date.prototyoe.toISOString to throw a RangeError exception
for invalid time values. It also includes a fix to removes the arbitrary
(and completely bogus) range limit on the date value during construction
of a Date object. Note that we still have bogus range limits on the year
and month values.
R=lrn@chromium.org
BUG=v8:1792
TEST=mjsunit/date,test262/15.9.5.43-0-*
Review URL: http://codereview.chromium.org/8392036
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9829 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
