One step closer to the informally-agreed upon specification
that structured cloning will always succeed, meaning, if
we fail to deserialize (e.g. because version mismatch in
serialized format and v8 version), we recompile.
As part of this work, the deserializer will need to become
more resilient to invalid input data, and fail graciously
rather than CHECK-ing. This CL addresses some of that,
sufficient to unblock the current serialization tests.
Subsequent CLs will add more testing and the appropriate
fixes.
BUG=639090
Review-Url: https://codereview.chromium.org/2395793003
Cr-Commit-Position: refs/heads/master@{#40058}
This patch sets `this` to be undefined when calling resolve and reject
functions attached to the deferred.
BUG=v8:5476
Review-Url: https://codereview.chromium.org/2399053003
Cr-Commit-Position: refs/heads/master@{#40056}
Introduce AccessCompilerData which hangs off the Isolate, and initialize
it when the first PropertyAccessCompiler is instantiated. This avoids
TSAN failures when trying to access load/store calling convention arrays.
BUG=v8:5427
Review-Url: https://codereview.chromium.org/2389313002
Cr-Commit-Position: refs/heads/master@{#40055}
A new V8 API object v8::TracingCpuProfiler is introduced.
Client can create it on an isolate to enable JS CPU profiles collected
during tracing session.
Once the v8.cpu_profile2 tracing category is enabled the profiler emits
CpuProfile and CpuProfileChunk events with the profile data.
BUG=chromium:406277
Review-Url: https://codereview.chromium.org/2396733002
Cr-Commit-Position: refs/heads/master@{#40054}
Imports and exports in 0xC can be much more than functions, including
tables, memories, and globals. This CL refactors the underlying
organization of imports and exports to support these new import types.
BUG=
Committed: https://crrev.com/599f8a83420346d9cba5ff97bd2a7520468207b6
Review-Url: https://codereview.chromium.org/2390113003
Cr-Original-Commit-Position: refs/heads/master@{#40033}
Cr-Commit-Position: refs/heads/master@{#40050}
There's no point going through all the checks in the Add stub when we
already know that both sides are strings.
Review-Url: https://codereview.chromium.org/2395083002
Cr-Commit-Position: refs/heads/master@{#40047}
This enables the {BytecodeGraphBuilder} whenever heuristics in the
compilation pipeline determine both Ignition and TurboFan to be used.
There no longer needs to be an explicit flag passed in order to build
graphs from bytecode.
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/2363413005
Cr-Commit-Position: refs/heads/master@{#40045}
Reason for revert:
Crashing.
Original issue's description:
> [heap] Concurrent slot filtering in sweeper threads.
>
> This is an intermediate step for concurrent slot filtering. This CL already makes filtering concurrent, but does not integrate it in the actual sweeping. This will be done in two follow up CLs. One for the regular slot set and one for the typed slot set.
>
> BUG=chromium:648568
>
> Committed: https://crrev.com/1f89d369fc952a2826f9f62901fb84fcf30920d7
> Cr-Commit-Position: refs/heads/master@{#40040}
TBR=ulan@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648568
Review-Url: https://codereview.chromium.org/2399003002
Cr-Commit-Position: refs/heads/master@{#40043}
Now that the scope chain is deserialized directly from the chain of
{ScopeInfo} objects, it is no longer needed to provide a context. This
makes the {AllowsLazyCompilationWithoutContext} predicate coincide with
the more general {AllowsLazyCompilation}. Remove the former.
R=jochen@chromium.org
Review-Url: https://codereview.chromium.org/2399853002
Cr-Commit-Position: refs/heads/master@{#40042}
With this CL, we devolve all Constants introduced as they are with an object handle into
* Range - for integers
* Nan
* MinusZero
* OtherNumberConstant - for doubles
* HeapConstant
We reduce the amount we have to inspect an object handle during optimization. Also, simplifications result. For example, you never have to check if a Range contains a HeapConstant.
BUG=
Review-Url: https://codereview.chromium.org/2381523002
Cr-Commit-Position: refs/heads/master@{#40041}
This is an intermediate step for concurrent slot filtering. This CL already makes filtering concurrent, but does not integrate it in the actual sweeping. This will be done in two follow up CLs. One for the regular slot set and one for the typed slot set.
BUG=chromium:648568
Review-Url: https://codereview.chromium.org/2401563002
Cr-Commit-Position: refs/heads/master@{#40040}
Recent changes in Segment class caused many tests to fail on mips32
because of an unaligned read error. Setting the alignment to 8 for mips
fixes the issue. Accessing doubles on mips32 must be eight bit aligned.
BUG=
Review-Url: https://codereview.chromium.org/2390303003
Cr-Commit-Position: refs/heads/master@{#40039}
Flag getters are implemented as TurboFan stubs while the rest are written as
C++. This distinction is somewhat arbitrary and more getters could be ported to
TurboFan in the future.
BUG=v8:5339
Review-Url: https://codereview.chromium.org/2389233002
Cr-Commit-Position: refs/heads/master@{#40036}
Imports and exports in 0xC can be much more than functions, including
tables, memories, and globals. This CL refactors the underlying
organization of imports and exports to support these new import types.
BUG=
Review-Url: https://codereview.chromium.org/2390113003
Cr-Commit-Position: refs/heads/master@{#40033}
In an anonymous namespace, all methods are already treated like being
static, so no need for these keywords.
Review-Url: https://codereview.chromium.org/2384403006
Cr-Commit-Position: refs/heads/master@{#40032}
This switches the {ParseInfo} constructor to always determine the outer
scope info from the shared function info instead of a concrete closure.
It is a precursor to deprecate the constructor taking closures entirely
and hence make the fact that we can parse without a closure explicit.
R=jochen@chromium.org
BUG=v8:2206
Review-Url: https://codereview.chromium.org/2397053003
Cr-Commit-Position: refs/heads/master@{#40031}
The generic implementations for typeof, strict equality and ToBoolean
don't need a context, so we can just pass the NoContextConstant (which
is Smi zero) instead, to reduce the live ranges for the context.
R=mvstanton@chromium.org
Review-Url: https://codereview.chromium.org/2400633002
Cr-Commit-Position: refs/heads/master@{#40027}
The scavenger should never consider mark bits for promotion/copy as this creates
weird livetimes at the start of incremental marking. E.g. consider an object
marked black by the marker at the start of incremental marking. A scavenge would
promote it to the old generation although it could --and for short-living
objects actually does-- become unreachable during marking
Also, keeping this invariant significantly simplifies young generation mark
compacting as we can compare against the scavenging decision without keeping
different sets of markbits.
BUG=chromium:651354
R=hpayer@chromium.org
Review-Url: https://codereview.chromium.org/2397713002
Cr-Commit-Position: refs/heads/master@{#40026}
... because the latter automatically respects the desired calling convention.
BUG=v8:5408
Review-Url: https://codereview.chromium.org/2398683004
Cr-Commit-Position: refs/heads/master@{#40025}
because ownership over it is not obviously clear
and leads to errors.
Review-Url: https://codereview.chromium.org/2366283003
Cr-Commit-Position: refs/heads/master@{#40024}
... because the latter automatically respects the desired calling convention.
BUG=v8:5408
Review-Url: https://codereview.chromium.org/2396023002
Cr-Commit-Position: refs/heads/master@{#40023}
Emit code like this
cmpq reg, [kRootRegister + offset]
when selecting instructions for comparisons with immortal, immovable
roots. This reduces register pressure as we don't need to load those
roots into registers first.
R=jarin@chromium.orgTBR=hpayer@chromium.org
Review-Url: https://codereview.chromium.org/2396923003
Cr-Commit-Position: refs/heads/master@{#40022}
Fixes:
- Remove OsrGuards on frame specialization (for asm.js).
- Handle the rename in the walk for native context.
- Fix LoadContext effect wiring for Osr context chains.
Review-Url: https://codereview.chromium.org/2388303006
Cr-Commit-Position: refs/heads/master@{#40021}
Specifically an attempt to address a 3.5% regression on the total load
time on cnn introduced by https://codereview.chromium.org/2113673002.
Non-refactoring effect of this CL is to reduce the number of branches in
CodeStubAssembler-generated loops iterating over FixedArrays from
two to one.
LOG=N
BUG=v8:5423
Review-Url: https://codereview.chromium.org/2380953002
Cr-Commit-Position: refs/heads/master@{#40020}
When we create native promises as part of PromiseThen, we don't have
to create resolving closures. The closure will only ever be called
once from PromiseHandle, therefore we don't need the alreadyResolved
check.
This results in a 21.76% improvement in the bluebird benchmark
over 5 runs.
BUG=v8:5046
Review-Url: https://codereview.chromium.org/2396763002
Cr-Commit-Position: refs/heads/master@{#40018}
v8::Integer::Value() method returns int64 but all scriptIds are 32 bit based. We can safely cast int64 into int here to make compilers happy.
R=dgozman@chromium.org
Review-Url: https://codereview.chromium.org/2394973002
Cr-Commit-Position: refs/heads/master@{#40016}
On PPC64 linux the OS page size is 64KB, therefore when the
snapshot is created the serialized heap already has LO_SPACE
allocated(the allocation goes beyond the 1st page of
CODE_SPACE and hence LO_SPACE is allocated).
I've updated the testcase to check if the delta
of the LO_SPACE is zero.
R=mlippautz@chromium.org, ulan@chromium.org, vogelheim@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2394893002
Cr-Commit-Position: refs/heads/master@{#40014}
Allow fround to take values without dots for globals (the spec allows this
subtly).
Drop over-restrictive assert preventing floating point globals from working.
BUG=v8:4203
R=jpp@chromium.org,aseemgarg@chromium.org
Review-Url: https://codereview.chromium.org/2397823003
Cr-Commit-Position: refs/heads/master@{#40013}
