The HUnaryMathOperation cannot be eliminated in general, because the
spec requires a ToNumber conversion on the input, which is observable
of course.
BUG=v8:4389
LOG=y
Review URL: https://codereview.chromium.org/1307413003
Cr-Commit-Position: refs/heads/master@{#30343}
The previous hack with HInstanceOfKnownGlobal was not only slower,
but also very brittle and required a lot of weird hacks to support it. And
what's even more important it wasn't even correct (because a map check
on the lhs is never enough for instanceof).
The new implementation provides a sane runtime implementation
for InstanceOf plus a fast case in the InstanceOfStub, combined with
a proper specialization in the case of a known global in CrankShaft,
which does only the prototype chain walk (coupled with a code
dependency on the known global).
As a drive-by-fix: Also fix the incorrect Object.prototype.isPrototypeOf
implementation.
BUG=v8:4376
LOG=y
Review URL: https://codereview.chromium.org/1304633002
Cr-Commit-Position: refs/heads/master@{#30342}
The ES2015 specification for switch statements 13.12.11 specifies that
they get their own lexical scope. This patch introduces such a scope
through a complex desugaring in terms of blocks, done so that Crankshaft
does not have to be updated to support multiple constructs providing
scopes.
Recommitting this patch after a bug fix in Crankshaft to allow a
desugaring with certain elements missing a source location:
https://codereview.chromium.org/1313443002
BUG=v8:4377
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1309163003
Cr-Commit-Position: refs/heads/master@{#30340}
The simulator uses a separate JS stack, exhaustion of the C stack
however is not caught by JS limit checks. This change now lowers the
limit of the JS stack accordingly on function calls.
R=mvstanton@chromium.org
BUG=chromium:522380
TEST=mjsunit/regress/regress-crbug-522380
LOG=n
Review URL: https://codereview.chromium.org/1314623002
Cr-Commit-Position: refs/heads/master@{#30334}
Adds Uint32x4, Uint16x8, and Uint8x16 types.
Adds all functions in the current spec, except for loads and stores.
LOG=Y
BUG=v8:4124
Review URL: https://codereview.chromium.org/1294513004
Cr-Commit-Position: refs/heads/master@{#30322}
Reason for revert:
Breaks cctest/test-cpu-profiler/SourceLocation on nosnap
Original issue's description:
> Add a separate scope for switch
>
> The ES2015 specification for switch statements 13.12.11 specifies that
> they get their own lexical scope. This patch introduces such a scope
> through a complex desugaring in terms of blocks, done so that Crankshaft
> does not have to be updated to support multiple constructs providing
> scopes.
>
> BUG=v8:4377
> LOG=Y
> R=adamk
>
> Committed: https://crrev.com/9edbc1f21eb1050cabbe3b8bc9aebf89ada7ebd7
> Cr-Commit-Position: refs/heads/master@{#30314}
TBR=adamk@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4377
Review URL: https://codereview.chromium.org/1309043004
Cr-Commit-Position: refs/heads/master@{#30316}
The parser has special behavior with respect to the bindings
of inner functions in sloppy mode which are not at the top
level of scopes. This behavior should be turned off when the
--harmony-sloppy-function flag is set, as lexical scoping
rules are used instead. Previously, the incorrect flag
--harmony-sloppy was used, resulting in a crashing bug.
BUG=chromium:520029
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1303033003
Cr-Commit-Position: refs/heads/master@{#30315}
The ES2015 specification for switch statements 13.12.11 specifies that
they get their own lexical scope. This patch introduces such a scope
through a complex desugaring in terms of blocks, done so that Crankshaft
does not have to be updated to support multiple constructs providing
scopes.
BUG=v8:4377
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1293283002
Cr-Commit-Position: refs/heads/master@{#30314}
This CL is a nightmare! For the utterly irrelevant edge case of a sloppy function with non-simple parameters and a call to direct eval, like here,
let x = 1;
function f(g = () => x) {
var y
eval("var x = 2")
return g() + x // f() = 3
}
we have to do all of the following, on top of the declaration block ("varblock") contexts we already introduce around the body:
- Introduce the ability for varblock contexts to have both a ScopeInfo and an extension object (e.g., the body varblock in the example will contain both a static var y and a dynamic var x). No other scope needs that. Since there are no context slots left, a special new struct is introduced that pairs up scope info and extension object.
- When declaring lookup slots in the runtime, this new struct is allocated in the case where an extension object has to be added to a block scope (at which point the block's extension slot still contains a plain ScopeInfo).
- While at it, introduce some abstraction to access context extension slots in a more controlled manner, in order to keep special-casing to a minimum.
- Make sure that even empty varblock contexts do not get optimised away when they contain a sloppy eval, so that they can host the potential extension object.
- Extend dynamic search for declaration contexts (used by sloppy direct eval) to recognize varblock contexts.
- In the parser, if a function has a sloppy direct eval, introduce an additional varblock scope around each non-simple (desugared) parameter, as required by the spec to contain possible dynamic var bindings.
- In the pattern rewriter, add the ability to hoist the named variables the pattern declares to an outer scope. That is required because the actual destructuring has to be evaluated inside the protecting varblock scope, but the bindings that the desugaring introduces are in the outer scope.
- ScopeInfos need to save the information whether a block is a varblock, to make sloppy eval calls work correctly that deserialise them as part of the scope chain.
- Add the ability to materialize block scopes with extension objects in the debugger. Likewise, enable setting extension variables in block scopes via the debugger interface.
- While at it, refactor and unify some respective code in the debugger.
Sorry, this CL is large. I could try to split it up, but everything is rather entangled.
@mstarzinger: Please review the changes to contexts.
@yangguo: Please have a look at the debugger stuff.
R=littledan@chromium.org, mstarzinger@chromium.org, yangguo@chromium.org
BUG=v8:811,v8:2160
LOG=N
Review URL: https://codereview.chromium.org/1292753007
Cr-Commit-Position: refs/heads/master@{#30295}
The ES6 spec for this function declares that ToLength
should only be called once. We were evaluating it multiple
times, so if length was an object with a valueOf method,
we could see effects take place multiple times.
R=littledan@chromium.org
LOG=N
BUG=v8:4218
Review URL: https://codereview.chromium.org/1237583005
Cr-Commit-Position: refs/heads/master@{#30240}
Second item in section 13.7.5.1 states that the error should be a
SyntaxError, when previously CheckAndRewriteReferenceExpression
would always emit a ReferenceError.
BUG=v8:4373
R=adamk, rossberg
LOG=N
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1292393002
Cr-Commit-Position: refs/heads/master@{#30184}
In doing so, fix calls CheckAndRewriteReferenceExpression to take proper
start and end positions (instead of just pointing at the first token in
the LHS expression).
BUG=v8:4370
LOG=n
Review URL: https://codereview.chromium.org/1290013002
Cr-Commit-Position: refs/heads/master@{#30166}
This patch strengthens testing of classes by verifying that the binding
that they export externally follows block scoping, as opposed to var-style
scoping. The tests are based on existing tests for let and const.
R=adamk
LOG=N
BUG=v8:3305
Review URL: https://codereview.chromium.org/1286923002
Cr-Commit-Position: refs/heads/master@{#30140}
In an initial attempt to implement sloppy mode lexical bindings,
functions were made lexically scoped in sloppy mode. However, the
ES2015 spec says that they need an additional hoisted var binding,
and further, it's not clear when we'll implement that behavior
or whether it's web-compatible.
This patch splits off function block scoping into a new, separate
flag called --harmony_sloppy_function. This change will enable the
possibility of testing and shipping this feature separately from
other block scoping-related features which don't have the same risks.
BUG=v8:4285
R=adamk
LOG=N
Review URL: https://codereview.chromium.org/1282093002
Cr-Commit-Position: refs/heads/master@{#30122}
In ES6, direct eval() in sloppy mode uses the enclosing function-level
("var") scope for var-style bindings and a new lexical scope for lexical
bindings like let and class. This patch implements that feature by making
lexical bindings that are directly within an EVAL_SCOPE be on the local
scope rather than the enclosing one.
BUG=v8:4288
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1274193004
Cr-Commit-Position: refs/heads/master@{#30120}
This avoids many back-and-forth calls to the runtime.
This also slightly changes the way we avoid getters. Previously, we circumvent getting the name property of ReferenceError, SyntaxError and TypeError due to crbug/69187 (in order to avoid leaking information from those errors through a 'name' getter installed on their prototypes). Now we do that for all errors created by V8.
R=jkummerow@chromium.org, rossberg@chromium.org
BUG=crbug:513472, crbug:69187
LOG=N
Review URL: https://codereview.chromium.org/1281833002
Cr-Commit-Position: refs/heads/master@{#30105}
Previously, examples like (({a = x}, x) => {})({}, 0) did not throw a ReferenceError like they should. This CL
- Splits up DeclareFormalParameters such that the formals can be recorded first and declared later.
- Declaration then takes the complete parameter list into account. If it is not simple, temporaries are introduced for all parameters.
- BuildParameterInitializationBlock desugars all parameters from non-simple lists into let-bindings.
- Refactored Pre/ParserFormalParameters, so that the arity information is no longer duplicated in Parser.
- Rest is currently handled specially, until rest-via-destructuring has landed.
R=adamk@chromium.org, littledan@chromium.org
BUG=v8:811
LOG=N
Review URL: https://codereview.chromium.org/1259283002
Cr-Commit-Position: refs/heads/master@{#30025}
To avoid tanking context startup performance, only the actual installation of the
JS-exposed API is flag-guarded. The remainder of the implementation still
resides in the snapshot.
Review URL: https://codereview.chromium.org/1257063003
Cr-Commit-Position: refs/heads/master@{#30017}
This introduces a CopyFixedArrayAndGrow method on Factory that takes
the "grow amount" instead of the "new size" as an argument. The new
interface is safer because it allows for mutations by the GC that
potentially trim the source array.
This also fixes a bug in SharedFunctionInfo::AddToOptimizedCodeMap
where the aformentioned scenario led to unused entries within the
optimized code map.
Note that FixedArray::CopySize is hereby deprecated because it is
considered unsafe and should no longer be used.
R=hpayer@chromium.org
TEST=mjsunit/regress/regress-crbug-513507
BUG=chromium:513507
LOG=n
Review URL: https://codereview.chromium.org/1255173006
Cr-Commit-Position: refs/heads/master@{#30012}
The calculation now takes into account the size of the arguments object
if it is present in the optimized frame.
(Yang, many thanks for the awesome repro!)
BUG=chromium:514362
LOG=N
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1264483008
Cr-Commit-Position: refs/heads/master@{#29973}
This fixes a bug introduced by r28826 (Unify decoding of deoptimization
translations, https://codereview.chromium.org/1136223004), where we
started leaking arguments marker sentinel to the debugger, which would
then cause crashes. This change replaces the sentinel with the undefined
value in the debugger-inspectable frame.
BUG=chromium:514362
LOG=n
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1263333002
Cr-Commit-Position: refs/heads/master@{#29971}
Moves some uncommon type checking from ToString and
NonStringToString into DefaultString. This should
speed up string operations.
LOG=N
BUG=none
Review URL: https://codereview.chromium.org/1256323004
Cr-Commit-Position: refs/heads/master@{#29913}
script_executed and last_run are read/written by multiple threads. Also
externalized_shared_contents_ is modified by multiple threads.
BUG=4306
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1252623003
Cr-Commit-Position: refs/heads/master@{#29912}
When the main thread terminates, it forcibly terminates all Worker threads.
When this happens, the threads objects were only half-created; they had a
JavaScript Worker object, but not a C++ worker object.
This CL fixes that bug, as well as some other fixes:
* Signatures on Worker methods
* Use SetAlignedPointerFromInternalField instead of using an External.
* Remove state_ from Worker. Simplify to atomic bool running_.
BUG=chromium:511880
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1255563002
Cr-Commit-Position: refs/heads/master@{#29911}
When a prototype object migrates from a slow to a fast map, where the slow map
was registered as a user of its own prototype, then the registration must be
transferred to the new map (just like MigrateToMap does for all other cases).
BUG=chromium:513602
LOG=y
NOTREECHECKS=true
Review URL: https://codereview.chromium.org/1263543004
Cr-Commit-Position: refs/heads/master@{#29898}
Class bindings are mutable and lexically scoped, with TDZ semantics.
They may not overlap with var bindings in the same scope. This patch
adds tests for those properties.
R=adamk
BUG=v8:3305
LOG=N
Review URL: https://codereview.chromium.org/1254003004
Cr-Commit-Position: refs/heads/master@{#29856}
--harmony_sloppy includes behavior to turn on sloppy mode lexical
bindings. Before this patch, it also included a way to parse let
which is likely web-incompatible (let is disallowed as an
identifier). This patch splits off the let parsing from the more
general block scoping code, so that block scoping can be developed
independently.
R=adamk
LOG=N
BUG=v8:3305
Review URL: https://codereview.chromium.org/1255013002
Cr-Commit-Position: refs/heads/master@{#29855}
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}
According to the ECMA spec, a 24th hour is allowed if the minutes, seconds, and milliseconds are all zero (i.e. it's midnight). Previously, we parsed the date correctly, however, we failed to account in all checks for the possibility of a 24th hour. This CL changes the check to allow a 24th hour if it's exactly midnight.
BUG=chromium:174609
LOG=Y
Review URL: https://codereview.chromium.org/1240093005
Cr-Commit-Position: refs/heads/master@{#29816}
While at it, remove the notion of INTERNAL variables.
@caitp: Took some parts from your CL, since I was blocked on the temp scope bug.
R=mstarzinger@chromium.org
BUG=512574
LOG=N
Review URL: https://codereview.chromium.org/1250513004
Cr-Commit-Position: refs/heads/master@{#29812}
Previous to this CL, ICs used a slightly different code idiom
to get to C++ code from generated code than runtime intrinsics,
using an IC_Utility class that in essence provided exactly
the same functionality as Runtime::FunctionForId, but in its
own quirky way.
This CL unifies the two mechanisms, folding IC_Utility
away by making all IC entry points in C++ code, e.g. IC
miss handlers, full-fledged runtime intrinsics. This makes
it possible to eliminate a bunch of ad-hoc declarations and
adapters that the IC system had to needlessly re-invent.
As a bonus and the original reason for this yak-shave:
IC-related C++ runtime functions are now callable from
TurboFan.
Review URL: https://codereview.chromium.org/1248303002
Cr-Commit-Position: refs/heads/master@{#29811}
There is already non-throwing version FrameMirror.restart and RestartFrame in the livedit-debugger.js just adds a throwing wrapper around it.
Also NEEDS_STEP_IN_PROPERTY_NAME was removed, the client code can decide based on the stack_modified field if "step in" is required.
Chromium side was fixed in https://codereview.chromium.org/1249013002/
BUG=None
LOG=N
Review URL: https://codereview.chromium.org/1247363002
Cr-Commit-Position: refs/heads/master@{#29797}
Many mjsunit tests (as well as the promises-aplus adapter scripts) were
using Object.observe simply for microtask-enqueueing purposes. Replaced
such uses with %EnqueueMicrotask.
Review URL: https://codereview.chromium.org/1246933002
Cr-Commit-Position: refs/heads/master@{#29779}
Prior to this patch, we enter a global debug mode whenever a break point
is set. By entering this mode, all code is deoptimized and activated
frames are recompiled and redirected to newly compiled debug code.
After this patch, we only deoptimize/redirect for functions we want to
debug. Trigger for this is Debug::EnsureDebugInfo, and having DebugInfo
object attached to the SFI prevents optimization/inlining.
The result is that we can have optimized code for functions without break
points alongside functions that do have break points, which are not
optimized.
R=mstarzinger@chromium.org, ulan@chromium.org
BUG=v8:4132
LOG=Y
Review URL: https://codereview.chromium.org/1233073005
Cr-Commit-Position: refs/heads/master@{#29758}
- Test that TypedArray properties cannot be set in strict mode
Properties like %TypedArray%.prototype.length have a getter and no
setter. This test verifies that property, which was apparently not
true in the past or had no test ensuring throwing in this case.
- Test that TypedArray integer indexed properties (array elements)
are not configurable
Both of these have passed for some time, but there are open bugs against
them and apparently no tests verifying that they are fixed.
BUG=v8:3048, v8:3799
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/1232843005
Cr-Commit-Position: refs/heads/master@{#29717}
This is a change from ES5 to ES6: When reversing an array, first it is checked
whether the element exists, before the element is looked up. The order in ES6
is
[[HasElement]] lower
[[Get]] lower (if present)
[[HasElement]] upper
[[Get]] upper (if present)
In ES5, on the other hand, the order was
[[Get]] lower
[[Get]] upper
[[HasElement]] lower
[[HasElement]] upper
To mitigate the performance impact, this patch implements a new, third copy
of reversing arrays if %_HasPackedElements. This allows us to skip all
membership tests, and a quick and dirty benchmark shows that the new version
is faster:
Over 4 runs, the slowest for the new version:
d8> var start = Date.now(); for (var i = 0; i < 100000000; i++) [1, 2, 3, 4, 5].reverse(); Date.now() - start
4658
Over 3 runs, the fastest for the old version:
d8> var start = Date.now(); for (var i = 0; i < 100000000; i++) [1, 2, 3, 4, 5].reverse(); Date.now() - start
5176
BUG=v8:4223
R=adamk
LOG=Y
Review URL: https://codereview.chromium.org/1238593003
Cr-Commit-Position: refs/heads/master@{#29716}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Committed: https://crrev.com/e5ed3bee99807c502fa7d7a367ec401e16d3f773
Cr-Commit-Position: refs/heads/master@{#29689}
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29712}
This makes the implicit initializing assignment to 'this' performed
after a super constructor call explicit in the AST. It removes the
need to handle the special case where a CallExpression behaves like a
AssignmentExpression from various AstVisitor implementations.
R=rossberg@chromium.org
Review URL: https://codereview.chromium.org/1226123010
Cr-Commit-Position: refs/heads/master@{#29705}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29689}
During parsing, we now keep track of the first spread seen in an array
literal (if any), and make use of that information when creating the
FixedArray backing store representing the constant elements for array
literal materialization.
The old code tried to do this by setting the generated JSArray's length
in ArrayLiteral::BuildConstantElements(), but that Array length is never
read by the rest of the literal materialization code (it always uses
the length of the FixedArray backing store).
BUG=v8:4298
LOG=n
Review URL: https://codereview.chromium.org/1225223004
Cr-Commit-Position: refs/heads/master@{#29684}
By not having to patch the return sequence (we patch the debug
break slot right before it), we don't overwrite it and therefore
don't have to keep the original copy of the code around.
R=ulan@chromium.org
BUG=v8:4269
LOG=N
Review URL: https://codereview.chromium.org/1234833003
Cr-Commit-Position: refs/heads/master@{#29672}
A sloppy mode eval call that establishes strict mode will leak that strictness
into the sloppy surrounding scope on recompile. This changes the structure
of the type feedback vector for the function and crashes follow.
The fix is straightforward.
BUG=491536, 503565
LOG=N
Review URL: https://codereview.chromium.org/1231343003
Cr-Commit-Position: refs/heads/master@{#29671}
Note: the previous try was reverted for occasional flaky tests. This continued
after the revert, and should be fixed by
https://codereview.chromium.org/1226143003.
Previously, the serialization code would call Externalize for every transferred
ArrayBuffer or SharedArrayBuffer, but that function can only be called once. If
the buffer is already externalized, we should call GetContents instead.
Also fix use-after-free bug when transferring ArrayBuffers. The transferred
ArrayBuffer must be internalized in the new isolate, or be managed by the
Shell. The current code gives it to the isolate externalized and frees it
immediately afterward when the SerializationData object is destroyed.
BUG=chromium:497295
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1223813008
Cr-Commit-Position: refs/heads/master@{#29658}
--debug-code causes full-codegen on arm64 to emit different number
of calls, which confuses the debugger when on-stack replacing code
with recompiled debug version on-stack.
BUG=chromium:507070
TBR=mstarzinger@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1228353004
Cr-Commit-Position: refs/heads/master@{#29638}
The new implemtation counts the number of calls (or continuations)
before the PC to find the corresponding PC in the new code.
R=mstarzinger@chromium.org
BUG=chromium:507070
LOG=N
Review URL: https://codereview.chromium.org/1235603002
Cr-Commit-Position: refs/heads/master@{#29636}
Until now, TF-generated code stubs piggy-backed off of the builtin
context. Since generation of code stubs is lazy, stubs generated at
different times in different native contexts would contain embedded
pointers different builtin contexts, leading to cross-context references
and memory leaks.
After this CL, all TF-generated code stubs are generated inside a
internal thinned-out, native context that lives solely for the
purpose of hosting generated code stubs.
Review URL: https://codereview.chromium.org/1213203007
Cr-Commit-Position: refs/heads/master@{#29593}
For now it uses a pretty slow path for accessing strings by wrapping it into a new temporary wrapper.
BUG=v8:4042, v8:3088
LOG=y
Review URL: https://codereview.chromium.org/1221303019
Cr-Commit-Position: refs/heads/master@{#29576}
Break point at calls are currently set via IC. To change this, we
need to set debug break slots instead. We also need to distinguish
those debug break slots as calls to support step-in.
To implement this, we add a data field to debug break reloc info to
indicate non-call debug breaks or in case of call debug breaks, the
number of arguments. We can later use this to find the callee on the
evaluation stack in Debug::PrepareStep.
BUG=v8:4269
R=ulan@chromium.org
LOG=N
Review URL: https://codereview.chromium.org/1222093007
Cr-Commit-Position: refs/heads/master@{#29561}
Instead of updating the SharedFuntionInfo set the name property on
the function directly.
BUG=v8:4278
LOG=N
R=verwaest@chromium.org, littledan@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1227523003
Cr-Commit-Position: refs/heads/master@{#29558}
When quit() is called, d8 shell exits without cleanup. If a worker is running,
it might be holding the context_mutex_, which if destroyed will DCHECK.
BUG=4279
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1231473002
Cr-Commit-Position: refs/heads/master@{#29557}
The function returned from Function.prototype.bind should have the same
[[Prototype]] as the receiver.
BUG=v8:3889
LOG=N
R=adamk@chromium.org, verwaest@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1217603005
Cr-Commit-Position: refs/heads/master@{#29556}
The breakage to Chrome seems to be based on @@isConcatSpreadable
and turning that part off with this patch fixes the Maps Tips & Tricks
test case.
BUG=chromium:507553
LOG=Y
R=adamk
Review URL: https://codereview.chromium.org/1226063002
Cr-Commit-Position: refs/heads/master@{#29545}
Optimize string "length" property access based on static type
information if possible, but also optimistically optimize the access
based on type feedback from the LoadIC.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1216593003
Cr-Commit-Position: refs/heads/master@{#29543}
This one occurred when serializing an object. When the property getter threw an
exception, that value was skipped, but the property count wasn't updated. The
deserializer then tried to deserialize the wrong value.
BUG=chromium:506549
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1220193004
Cr-Commit-Position: refs/heads/master@{#29541}
- Add a TurboFanIC class, derived from TurboFanCodeStub, that
automatically distinguishes between versions of the IC called from
optimized and unoptimized code.
- Add appropriate InterfaceDescriptors for both the versions of the
stub called from unoptimized and optimized code
- Change the MathFloor TF stub generator to output either the
for-optimized or for-unoptimized version based on the minor_key
parameter.
Committed: https://crrev.com/8f13b655b8a10dae2116dd18b32f09337bb2d410
Cr-Commit-Position: refs/heads/master@{#29534}
Review URL: https://codereview.chromium.org/1225943002
Cr-Commit-Position: refs/heads/master@{#29539}
Reason for revert:
Failure on compiling runtime.js on windows
Original issue's description:
> Add unoptimized/optimized variants of MathFloor TF code stub
>
> - Add a TurboFanIC class, derived from TurboFanCodeStub, that
> automatically distinguishes between versions of the IC called from
> optimized and unoptimized code.
> - Add appropriate InterfaceDescriptors for both the versions of the
> stub called from unoptimized and optimized code
> - Change the MathFloor TF stub generator to output either the
> for-optimized or for-unoptimized version based on the minor_key
> parameter.
>
> Committed: https://crrev.com/8f13b655b8a10dae2116dd18b32f09337bb2d410
> Cr-Commit-Position: refs/heads/master@{#29534}
TBR=mvstanton@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1220783006
Cr-Commit-Position: refs/heads/master@{#29535}
- Add a TurboFanIC class, derived from TurboFanCodeStub, that
automatically distinguishes between versions of the IC called from
optimized and unoptimized code.
- Add appropriate InterfaceDescriptors for both the versions of the
stub called from unoptimized and optimized code
- Change the MathFloor TF stub generator to output either the
for-optimized or for-unoptimized version based on the minor_key
parameter.
Review URL: https://codereview.chromium.org/1225943002
Cr-Commit-Position: refs/heads/master@{#29534}
Smi immediates are not supported, so instructions with Smi representations need their constants in a register. LAddI has already been doing this. The manifestation of the bug was that an operation would compute 0 instead of the correct result.
BUG=chromium:478612
LOG=y
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/1224623017
Cr-Commit-Position: refs/heads/master@{#29529}
If we compile handlers to call accessors, Debug::HandleStepIn won't get
called. Therefore we need to clear ICs each time. This has not been
necessary before because we used to patch ICs for breaking, and restored
them with cleared ICs. This is no longer the case. We do not use ICs
for breaking anymore, so they are not implicitly cleared any longer.
R=mvstanton@chromium.org
BUG=v8:4269
LOG=N
Review URL: https://codereview.chromium.org/1212253009
Cr-Commit-Position: refs/heads/master@{#29518}
Reason for revert:
[Sheriff] Test hangs sometimes and times out flakily. E.g.: http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosse3/builds/4551/steps/Check%20%28flakes%29/logs/d8-worker-sharedarray..
Original issue's description:
> Fix bug when transferring SharedArrayBuffer to multiple Workers.
>
> Previously, the serialization code would call Externalize for every transferred
> ArrayBuffer or SharedArrayBuffer, but that function can only be called once. If
> the buffer is already externalized, we should call GetContents instead.
>
> Also fix use-after-free bug when transferring ArrayBuffers. The transferred
> ArrayBuffer must be internalized in the new isolate, or be managed by the
> Shell. The current code gives it to the isolate externalized and frees it
> immediately afterward when the SerializationData object is destroyed.
>
> BUG=chromium:497295
> R=jarin@chromium.org
> LOG=n
>
> Committed: https://crrev.com/dd7962bf7838f8379ba776ee6b7b0e4d3bec2140
> Cr-Commit-Position: refs/heads/master@{#29499}
TBR=jarin@chromium.org,jochen@chromium.org,binji@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:497295
Review URL: https://codereview.chromium.org/1224843008
Cr-Commit-Position: refs/heads/master@{#29506}
Previously, the serialization code would call Externalize for every transferred
ArrayBuffer or SharedArrayBuffer, but that function can only be called once. If
the buffer is already externalized, we should call GetContents instead.
Also fix use-after-free bug when transferring ArrayBuffers. The transferred
ArrayBuffer must be internalized in the new isolate, or be managed by the
Shell. The current code gives it to the isolate externalized and frees it
immediately afterward when the SerializationData object is destroyed.
BUG=chromium:497295
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1215233004
Cr-Commit-Position: refs/heads/master@{#29499}
The context constant cannot be materialized from the frame when we are
compiling for OSR, because the context spill slot contains the current
instead of the outermost context in full-codegen.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1220013003
Cr-Commit-Position: refs/heads/master@{#29472}
Currently we lower shifts directly to machine operators, and add an
appropriate Word32And to implement the & 0x1F operation on the right
hand side required by the specification. However for Word32And we assume
Int32 in simplified lowering, which is basically changes the right hand
side bit interpretation for the shifts from Uint32 to Int32, which is
obviously wrong. So now we represent that explicitly by proper
simplified operators for the shifts, which are lowered to machine in
simplified lowering.
R=jarin@chromium.org
Review URL: https://codereview.chromium.org/1213803008
Cr-Commit-Position: refs/heads/master@{#29465}
Keeping this CL separate in case there are more GC-stress problems.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1217543006
Cr-Commit-Position: refs/heads/master@{#29449}
The only right way to enable access checks is to install access check callbacks on an object template via v8::ObjectTemplate::SetAccessCheckCallbacks(). It does not make sense to enable access checks on an arbitrary object.
Review URL: https://codereview.chromium.org/1217893012
Cr-Commit-Position: refs/heads/master@{#29439}
This involves:
- Enabling the tail call optimization reducer in all cases.
- Adding an addition flag to CallFunctionParameters to mark call sites
that can be tail-called enabled.
- Only set the tail-call flag for %_CallFunction.
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/1216933011
Cr-Commit-Position: refs/heads/master@{#29436}
Conditionally including Array and TypedArray methods seems to cause
a slowdown in V8 context creation, possibly due to the new code added.
BUG=chromium:504629
R=adamk@chromium.org
LOG=Y
Review URL: https://codereview.chromium.org/1215863003
Cr-Commit-Position: refs/heads/master@{#29430}
This is more consistent with the DOM API, and is clearer w.r.t. which values
are available in the lexical environment of the Worker.
BUG=chromium:497295
R=jarin@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1218553004
Cr-Commit-Position: refs/heads/master@{#29426}
The enumerable expression in a for-in/of loop is supposed to have a TDZ for any
lexically bound names in that loop (there can be more than one with destructuring).
This patch accomplishes this with an almost-correct desugaring. The only thing missing
is proper debugger support (the let declarations added by the desugaring, while invisible
to code due to shadowing, are visible to the debugger).
BUG=v8:4210
LOG=n
Review URL: https://codereview.chromium.org/1218543003
Cr-Commit-Position: refs/heads/master@{#29396}
v8::Internal::List will DCHECK when indexing out of the array, even if just to
get the address, and the value is never used. So this construct will fail:
memcpy(p, &data[0], length);
When data is empty and length is 0.
BUG=chromium:505778
R=mstarzinger@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1216853003
Cr-Commit-Position: refs/heads/master@{#29388}
Revert "Revert relanded strong property access CL"
Regression issues should be solved. Initial patchset is the original, subsequent patchsets are the fixing modifications.
This reverts commit 4ac7be5656.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1199983002
Cr-Commit-Position: refs/heads/master@{#29384}
Also fixes a crankshaft bug with strong implicit conversions.
It turns out that the implicit conversion of oddball values
is smushed into so many places in crankshaft that it would
have been pretty invasive surgery to make everything fall
out naturally.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1216463003
Cr-Commit-Position: refs/heads/master@{#29381}
This makes sure that the exit control flow that merges the try-block
with the catch-block after a try-catch-statement creates a new merge
node in cases where it has to. Otherwise dangling phi nodes might have
the wrong number of value inputs.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-505354
BUG=chromium:505354
LOG=N
Review URL: https://codereview.chromium.org/1213183003
Cr-Commit-Position: refs/heads/master@{#29362}
This makes new.target work in [[Call]] and [[Construct]] of ordinary
functions.
We achieve this by introducing a new construct stub for functions that
uses the new.target variable. The construct stub pushes the original
constructor just above the receiver in the construct frame.
BUG=v8:3887
LOG=N
R=adamk@chromium.org, dslomov@chromium.org
Review URL: https://codereview.chromium.org/1203813002
Cr-Commit-Position: refs/heads/master@{#29358}
zlib is broken for mips after 35eb3a0260.
We're still working on a fix. Skip test for now, so the bots cycle green.
BUG=
Review URL: https://codereview.chromium.org/1209253005
Cr-Commit-Position: refs/heads/master@{#29356}
Dumb typo introduced in refs/heads/master@{#29306}. I thought I was turning on
report_exceptions in Shell::ExecuteString, but instead I turned on print_result
(which assumes an interactive debugger and a HandleScope for the
utility_context_).
BUG=chromium:504727,chromium:504728
R=mstarzinger@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1219563002
Cr-Commit-Position: refs/heads/master@{#29350}
The use of jalr ra is unpredictable if instruction in branch delay slot
is in next page.
This finally fixes random failures in JS debugger and InteruptRequest tests.
TEST=mjsunit/debug-*,
cctest/test-api/RequestInterruptTestWithNativeAccessor
BUG=
Review URL: https://codereview.chromium.org/1220443002
Cr-Commit-Position: refs/heads/master@{#29331}
Note that prior to having canonical shared function infos, this has
been a source of duplicate shared function infos.
R=bmeurer@chromium.org
BUG=chromium:504787
LOG=N
Review URL: https://codereview.chromium.org/1209383002
Cr-Commit-Position: refs/heads/master@{#29326}
The issue is that Worker.prototype.terminate was deleting the C++ Worker
object, and then Worker.prototype.getMessage was trying to read messages from
the queue.
The simplest solution is to keep workers in a zombie state when they have been
terminated. They won't be reaped until Shell::CleanupWorkers is called.
I've also fixed some threading issues with Workers:
* Workers can be created by another Worker, so the Shell::workers_ variable
must be protected by a mutex.
* An individual Worker can typically only be accessed by the isolate that
created it, but the main thread can always terminate it, so the Worker::state_
must be accessed in a thread-safe way.
BUG=chromium:504136
R=jochen@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1208733002
Cr-Commit-Position: refs/heads/master@{#29306}
We need to do the ToName before the ToObject.
BUG=v8:4229
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/1211663002
Cr-Commit-Position: refs/heads/master@{#29272}
If the replacer array contains a number wrapper we should use the
toString result and not valueOf.
BUG=v8:4228
LOG=N
R=adamk
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1207013002
Cr-Commit-Position: refs/heads/master@{#29270}
The i18n.js code was calling a lot of methods, which might have been
removed or replaced by user code.
Make sure we use the original functions.
BUG=v8:4220
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1199813004
Cr-Commit-Position: refs/heads/master@{#29268}
Shell::SerializeValue was using a HandleScope, but was also storing Handles in
an ObjectList. The ObjectList handles would persist after the function had
returned, but will have already been destroyed by the HandleScope, so there is
a use-after-free.
This change removes the HandleScope in Shell::SerializeValue and relies on the
caller's HandleScope.
BUG=chromium:503968
R=jochen@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1211433003
Cr-Commit-Position: refs/heads/master@{#29265}
We used to call toString as a method which is not safe.
BUG=v8:4225
LOG=Y
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1200033003
Cr-Commit-Position: refs/heads/master@{#29242}
Speculative revert in the hopes of fixing serializer crashes seen in canary.
This reverts commit c166945083, as well as
followup change "Do not look for existing shared function info when compiling a new script."
(commit 7c43967bb7).
BUG=chromium:503552,v8:4132
TBR=yangguo@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1207583002
Cr-Commit-Position: refs/heads/master@{#29241}
ARM64's `fmin` and `fmax` instructions don't have the same behaviour as
TurboFan's Float(32|64)(Min|Max) functions.
BUG=4206
LOG=N
Review URL: https://codereview.chromium.org/1200123004
Cr-Commit-Position: refs/heads/master@{#29229}
We were using both String.prototype.charCodeAt and
String.prototype.charAt.
BUG=v8:4224
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1204483003
Cr-Commit-Position: refs/heads/master@{#29208}
This test starts failing when the --harmony-array flag is turned on,
but the failure does not directly have to do with that flag. Disabling
the test in debug mode to unblock the release.
BUG=v8:4237
LOG=n
R=adamk,erikcorry
Review URL: https://codereview.chromium.org/1202523005
Cr-Commit-Position: refs/heads/master@{#29207}
Before this we were using String.prototype.replace. Now
we call the internal StringReplace instead.
BUG=v8:4221
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1199933005
Cr-Commit-Position: refs/heads/master@{#29206}
Before this we were using + which calls valueOf which is not correct
for these methods.
BUG=v8:4222
LOG=N
R=adamk, littledan
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel
Review URL: https://codereview.chromium.org/1194173004
Cr-Commit-Position: refs/heads/master@{#29202}
This test appears to trigger some bug in either ASAN or V8 when
accompanied by an increase in JS code size. Disabling the test
on ASAN runs to unblock adding new JS code.
BUG=v8:4236
LOG=N
R=adamk
Review URL: https://codereview.chromium.org/1203523002
Cr-Commit-Position: refs/heads/master@{#29201}
This API closely matches the Worker API. The differences:
1) The argument to the Worker constructor is a function to run, not a script.
2) Receiving a message from a worker is a synchronous API (as there is no event
loop).
The serialization done here is not robust as the real DOM implementation. For
example, recursive data structures or otherwise duplicated objects are not
allowed.
BUG=chromium:497295
LOG=n
Review URL: https://codereview.chromium.org/1192923002
Cr-Commit-Position: refs/heads/master@{#29195}
