Default to the chromium-internal build config (instead of the more
permissive no_chromium_code config).
BUG=v8:5878
Review-Url: https://codereview.chromium.org/2758563002
Cr-Commit-Position: refs/heads/master@{#43909}
Parse tasks are still WIP so there is really no benefit turning them on.
Turn off irrelevant tests.
Fix duplicate parameters inverted logic.
Fix use_counts tracking.
Fix language mode, super_property, evals.
Fix modules and stack overflow.
BUG=v8:6093
Change-Id: I8567b36eef7b9de6799789e7520810bde9c86e5b
Reviewed-on: https://chromium-review.googlesource.com/455916
Commit-Queue: Wiktor Garbacz <wiktorg@google.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43903}
This CL renames all occurrences of "internal field" to "embedder field"
to prevent confusion. As it turns out, these fields are not internal to
V8, but are actually embedder provided fields that should not be mucked
with by the internal implementation of V8.
Note that WASM does use these fields, and it should not.
BUG=v8:6058
Review-Url: https://codereview.chromium.org/2741683004
Cr-Commit-Position: refs/heads/master@{#43900}
This is a first stab at extending the existing early lowering approach
to property access operations. Currently we only handle the case where
named property loads are lowered to a soft deoptimize operation, due to
insufficient type feedback.
R=jarin@chromium.org
Change-Id: I779ffb99978023237da5ad9eaf0241fe74243882
Reviewed-on: https://chromium-review.googlesource.com/456316
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43899}
There are at least 3 mechanisms for detecting duplicate parameters.
- ExpressionClassifier
- Scope::DeclareParameter checking IsDeclaredParameter
- PatternRewriter::VisitVariableProxy failing to declare a duplicate parameter
The conditions for when duplicate parameters are allowed and when not are pretty
involved too. They are allowed when
- the function is not an arrow function and not a concise method *and*
- when the parameter list is simple *and*
- we're in sloppy mode (incl. the function doesn't declare itself strict).
In addition, we don't recognize some of the early errors, and it's
non-trivial to see which ones are recognized and which not (see bug
v8:6108). E.g., (dup, dup) => {}; is recognized but (dup, [dup]) => {} is
not. And (dup, [dup]) => 1; is.
We do have tests for some aspects of duplicate parameters (e.g., arrow function
duplicate parameters are included in arrow function tests), but it's hard to see
whether all combinations of the relevant conditions are tested.
This CL adds more structured tests which hopefully enables reducing the
duplicate parameter detection mechanisms to 2 or maybe even to 1.
BUG=v8:6092
Change-Id: Idd3db43b380aae4b9a89be5f1ed0755d39bfb36d
Reviewed-on: https://chromium-review.googlesource.com/456336
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43895}
This is a first step towards moving Turbofan code generation off the main thread.
Summary of the changes:
- AssemblerBase no longer has a pointer to the isolate. Instead, its
constructor receives the few things that it needs from the isolate (on most
architectures this is just the serializer_enabled flag).
- RelocInfo no longer has a pointer to the isolate. Instead, the functions
that need it take it as an argument. (There are currently still a few that
implicitly access the isolate through a HeapObject.)
- The MacroAssembler now explicitly holds a pointer to the isolate (before, it
used to get it from the Assembler).
- The jit_cookie also moved from AssemblerBase to the MacroAssemblers, since
it's not used at all in the Assemblers.
- A few architectures implemented parts of the Assembler with the help
of a Codepatcher that is based on MacroAssembler. Since the Assembler no
longer has the isolate, but the MacroAssembler still needs it, this doesn't
work anymore. Instead, these Assemblers now use a new PatchingAssembler.
BUG=v8:6048
Review-Url: https://codereview.chromium.org/2732273003
Cr-Commit-Position: refs/heads/master@{#43890}
Since TrapIf has been implemented on all platforms, there is no need
anymore for the old WasmTrapHelper code. This CL also removes
TrapIf-specific tests.
R=titzer@chromium.org, clemensh@chromium.org
Change-Id: Ic069598441b7bd63bde2e66f4e536abea5ecebe6
Reviewed-on: https://chromium-review.googlesource.com/452380
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43887}
test-unboxed-doubles/WriteBarrierObjectShiftFieldsRight recently started
failing on arm64-nosnapshot builds due to a broken CHECK.
# Fatal error in ../../test/cctest/test-unboxed-doubles.cc, line 1417
# Check failed: heap->InNewSpace(*obj_value).
It expects the result of Factory::NewJSArray() to be in new
space; but NewJSArray encapsulates two allocations so the return value can
actually be in old space. Fix it by ensuring only one allocation occurs.
BUG=v8:5339
Review-Url: https://codereview.chromium.org/2759433002
Cr-Commit-Position: refs/heads/master@{#43886}
String case conversion is known to debug-evaluate to not have a side
effect in noi18n mode, but debug-evaluate thinks it has a side effect
in i18n mode. Update the tests accordingly.
Verified locally that the test passes in i18n and noi18n mode (not sure
whether the noi18n trybot executes this test).
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux_noi18n_rel_ng
Review-Url: https://codereview.chromium.org/2750403004
Cr-Commit-Position: refs/heads/master@{#43882}
DetachArrayBuffer makes incorrect assumptions about the state of the ArrayBuffer. It assumes that that the ArrayBuffer is internal to wasm unless guard pages are enabled, this is not the case as the ArrayBuffer can be externalized outside of wasm, in this case through gin.
BUG=chromium:700384
Review-Url: https://codereview.chromium.org/2754153002
Cr-Commit-Position: refs/heads/master@{#43880}
Note that this also modifies mjsunit.js to allow the {failWithMessage} method to be monkey-patched by a test. This is necessary because assertions which fail in a promise's then-clause would normally only throw an exception, which is swallowed by the promise, causing the test to silently pass. Instead, patching this {failWithMessage} functionality allows then clauses to use the full assertion machinery of mjsunit.js.
R=ulan@chromium.org, gsathya@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2752043002
Cr-Commit-Position: refs/heads/master@{#43875}
Adding a custom lexer for asm.js parsing.
It takes advantage of a number of asm.js properties to simply things:
* Assumes 'use asm' is the only string.
* Does not handle unicode for now (tools don't emit it).
* Combines global + local string table with lexer.
R=marja@chromium.org,vogelheim@chromium.org,kschimpf@chromium.org
BUG=v8:4203
BUG=v8:6090
Review-Url: https://codereview.chromium.org/2751693002
Cr-Commit-Position: refs/heads/master@{#43874}
- Implement C++ builtins and ElementsAccessor for
%TypedArray%.prototype.lastIndexOf
- Remove TypedArrayLastIndexOf in src/js/typedarray.js
- Combine InnerArrayLastIndexOf and ArrayLastIndexOf in src/js/array.js
BUG=v8:5929
Review-Url: https://codereview.chromium.org/2744283002
Cr-Commit-Position: refs/heads/master@{#43870}
Collect type information for JavaScript variables and display it
in Chrome DevTools.
Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
When debugging JavaScript, it’s helpful to know the type of
a variable, parameter, and return values. JavaScript is
dynamically typed, and for complex
source code it’s often hard to infer types. With type profiling, we
can provide type information to JavaScript developers.
This CL is a proof of concept. It collects type profile for
assignments and simply prints the types to stdout.
The output looks something like this:
#my_var1
#Object
#number
#string
#number
#undefined
#string
#Object
#Object
We use an extra slot in the feedback vector of assignments to
carry the list of types for that assignment. The extra slot is
only added when the flag --type-profile is given.
Missing work:
* Collect data for parameters and return values (currently only assignments).
* Remove duplicates from the list of collected types and use a common base class.
* Add line numbers or source position instead of the variable name.
For now, has a test that compares the stdout of --type-profile in test/message. We
will remove this test when --type-profile is fully integrated in
the debugger protocol. Adding
the test in test/inspector does not work, because the inspector
test itself consists of JavaScript code that would convolute the
output and be non-deterministic under stress.
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2707873002
Cr-Commit-Position: refs/heads/master@{#43866}
- Change test to avoid adding denormalized numbers. This flushes to
zero on ARM hardware when using Neon.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2754543007
Cr-Commit-Position: refs/heads/master@{#43864}
This behaviour was missing before. If a trap is encountered in the
interpreter, we now throw the right error. With test.
R=titzer@chromium.org, ahaas@chromium.org
BUG=v8:5822
Change-Id: I09c23d15fcde32ec586fb6d3094a5ec49155a9a2
Reviewed-on: https://chromium-review.googlesource.com/453839
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43859}
When instantiating the wasm interpreter for debugging, we unwrap all
wasm-to-js wrappers and store the callable objects. The handles are
stored in a DeferredHandleScope and deleted when the InterpreterHandle
(store in WasmDebugInfo) is freed.
A call to an imported function reads the arguments from the stack,
converts them to JS objects, calls the callable, converts back the
return value and pushes it onto the stack.
Reentering the interpreter from the calles JS code is not permitted
yet, but will be in a follow-up CL.
Also, indirect calls to imported functions will have to follow.
R=titzer@chromium.org, ahaas@chromium.org
BUG=v8:5822
Change-Id: I66c35053bccb6cf8d416606e4f840d888ccb3b65
Reviewed-on: https://chromium-review.googlesource.com/453838
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43855}
Reason for revert:
Still flaky
Original issue's description:
> Collect type profile for DevTools
>
> Collect type information for JavaScript variables and display it
> in Chrome DevTools.
> Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
>
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is
> dynamically typed, and for complex
> source code it’s often hard to infer types. With type profiling, we
> can provide type information to JavaScript developers.
>
> This CL is a proof of concept. It collects type profile for
> assignments and simply prints the types to stdout.
>
> The output looks something like this:
>
> #my_var1
> #Object
> #number
> #string
> #number
> #undefined
> #string
> #Object
> #Object
>
>
> We use an extra slot in the feedback vector of assignments to
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given.
>
>
> Missing work:
> * Collect data for parameters and return values (currently only assignments).
> * Remove duplicates from the list of collected types and use a common base class.
> * Add line numbers or source position instead of the variable name.
>
>
>
> BUG=v8:5935
>
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Original-Original-Commit-Position: refs/heads/master@{#43791}
> Committed: 0332bebde9
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Original-Commit-Position: refs/heads/master@{#43804}
> Committed: 6cf880f4b8
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43846}
> Committed: 5c32287390
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43849}
> Committed: 18c35e4958TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2745413006
Cr-Commit-Position: refs/heads/master@{#43852}
Collect type information for JavaScript variables and display it
in Chrome DevTools.
Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
When debugging JavaScript, it’s helpful to know the type of
a variable, parameter, and return values. JavaScript is
dynamically typed, and for complex
source code it’s often hard to infer types. With type profiling, we
can provide type information to JavaScript developers.
This CL is a proof of concept. It collects type profile for
assignments and simply prints the types to stdout.
The output looks something like this:
#my_var1
#Object
#number
#string
#number
#undefined
#string
#Object
#Object
We use an extra slot in the feedback vector of assignments to
carry the list of types for that assignment. The extra slot is
only added when the flag --type-profile is given.
Missing work:
* Collect data for parameters and return values (currently only assignments).
* Remove duplicates from the list of collected types and use a common base class.
* Add line numbers or source position instead of the variable name.
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Original-Original-Commit-Position: refs/heads/master@{#43791}
Committed: 0332bebde9
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Original-Commit-Position: refs/heads/master@{#43804}
Committed: 6cf880f4b8
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Commit-Position: refs/heads/master@{#43846}
Committed: 5c32287390
Review-Url: https://codereview.chromium.org/2707873002
Cr-Commit-Position: refs/heads/master@{#43849}
Reason for revert:
Flaky under stress. Fix first.
Original issue's description:
> Collect type profile for DevTools
>
> Collect type information for JavaScript variables and display it
> in Chrome DevTools.
> Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
>
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is
> dynamically typed, and for complex
> source code it’s often hard to infer types. With type profiling, we
> can provide type information to JavaScript developers.
>
> This CL is a proof of concept. It collects type profile for
> assignments and simply prints the types to stdout.
>
> The output looks something like this:
>
> #my_var1
> #Object
> #number
> #string
> #number
> #undefined
> #string
> #Object
> #Object
>
>
> We use an extra slot in the feedback vector of assignments to
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given.
>
>
> Missing work:
> * Collect data for parameters and return values (currently only assignments).
> * Remove duplicates from the list of collected types and use a common base class.
> * Add line numbers or source position instead of the variable name.
>
>
>
> BUG=v8:5935
>
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Original-Commit-Position: refs/heads/master@{#43791}
> Committed: 0332bebde9
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43804}
> Committed: 6cf880f4b8
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43846}
> Committed: 5c32287390TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2747383004
Cr-Commit-Position: refs/heads/master@{#43847}
Collect type information for JavaScript variables and display it
in Chrome DevTools.
Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
When debugging JavaScript, it’s helpful to know the type of
a variable, parameter, and return values. JavaScript is
dynamically typed, and for complex
source code it’s often hard to infer types. With type profiling, we
can provide type information to JavaScript developers.
This CL is a proof of concept. It collects type profile for
assignments and simply prints the types to stdout.
The output looks something like this:
#my_var1
#Object
#number
#string
#number
#undefined
#string
#Object
#Object
We use an extra slot in the feedback vector of assignments to
carry the list of types for that assignment. The extra slot is
only added when the flag --type-profile is given.
Missing work:
* Collect data for parameters and return values (currently only assignments).
* Remove duplicates from the list of collected types and use a common base class.
* Add line numbers or source position instead of the variable name.
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Original-Commit-Position: refs/heads/master@{#43791}
Committed: 0332bebde9
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Commit-Position: refs/heads/master@{#43804}
Committed: 6cf880f4b8
Review-Url: https://codereview.chromium.org/2707873002
Cr-Commit-Position: refs/heads/master@{#43846}
The fast-path for Array.prototype.indexOf first checks whether the
receiver is a fast-mode JSArray (and there are no elements in the
prototype chain in case of holey arrays), then loads the known
JSArray::length, and afterwards calls ToInteger on the fromIndex.
But this ToInteger(fromIndex) call can cause arbitrary side effects if
the fromIndex is a JSReceiver, in particular it can invalidate the
assumptions about the fast-mode of the receiver and the length. In the
worst case this leads to OOB memory access.
Quick-fix is to bailout to the runtime if the fromIndex is neither a Smi
nor undefined, which represents the common cases.
R=jarin@chromium.org
BUG=chromium:702058
Review-Url: https://codereview.chromium.org/2756663002
Cr-Commit-Position: refs/heads/master@{#43843}
- Adds new load/store opcodes (0xc0, 0xc1) for S128 type.
- Implements these for ARM.
- Enables more WASM SIMD tests, and adds new LoadStoreLoad test.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2745853002
Cr-Commit-Position: refs/heads/master@{#43841}
When generating the code for an illegal (non-js-compliant) wrapper for
a js function, we were generating a zero constant of the return type.
This failed on ia32 if the return type is i64.
The correct thing to do is to return two i32 zero constants.
R=titzer@chromium.org
BUG=v8:6104, v8:6096
Change-Id: Idc0dd8d3eef901c22d5278d97f1879b000a18588
Reviewed-on: https://chromium-review.googlesource.com/455857
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43835}
That way, we don't need to create a context-less constructor function.
Instead, we use the constructor_or_backpointer (or null) field, and
rename it to constructor_or_fti_or_backpointer so nobody is confused.
Note that technically, we still have JSFunctions without contexts, as
they're temporarily created in the deoptimizer.
BUG=v8:6084
R=dcheng@chromium.org,bmeurer@chromium.org,verwaest@chromium.org
Change-Id: I084f052533c317f2cbfb9c35e1acf40263c6257b
Reviewed-on: https://chromium-review.googlesource.com/454636
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43834}
Adds a TestTypeof bytecode to deal with comparisons of the form:
typeof(object) === 'string';
Also adds support to Turbofan to perform these comparisons without
inserting checkpoints.
BUG=v8:4280,v8:5267
Change-Id: Ib5cc1c6816dfe70a4120838d8eada2fc0267750f
Reviewed-on: https://chromium-review.googlesource.com/454837
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43832}
The function "foo" in "base_getter_test" was picking up a left-over
optimised code object from foo's code map, the third time that
base_getter_test was run, instead of optimising it itself. This
broke the assumptions of the test, that each case was functionally
independent from the others, and had started off with empty feedback
and no optimised code.
This breaks the test though, so we have to blacklist it pending a fix
to the root cause (http://crbug.com/v8/6101).
Review-Url: https://codereview.chromium.org/2750623004
Cr-Commit-Position: refs/heads/master@{#43828}
This handles non-strict equality comparison operations having number
feedback during the early type-hint lowering (i.e. during graph
construction).
R=jarin@chromium.org
Change-Id: I1db67e78312934bbb20aee775979797420ff2581
Reviewed-on: https://chromium-review.googlesource.com/455796
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43824}
When compiling a wasm to js wrapper for a signature which is not JS
compatible, we generate a runtime call to throw a type error and return
immediately afterwards. We were using the return value of the runtime
call as return value for the wrapper.
This worked for integer return values, since the same registers are
used for tagged values and integer values. For float values, however,
it failed, since the return value needs to be stored in another
register.
R=titzer@chromium.org
BUG=v8:6096
Change-Id: I8f39ea132cd150c3044673d25fa3c3588b4266bf
Reviewed-on: https://chromium-review.googlesource.com/455816
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43821}
Mark slow tests discovered by manual audit of reported durations.
Slow tests will run first, which will lead to higher test runner throughput.
Also some tests have flaky timeouts occasionally.
BUG=chromium:601468
Change-Id: If9aeb5422e79ff25b867b01c50386a5fdebeb494
Reviewed-on: https://chromium-review.googlesource.com/455736
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43819}
This changes the IR to no longer require single {IfSuccess} projection
nodes unless there is a corresponding {IfException} node that links the
potentially throwing call to an exception handler. This reduces graph
size as well as compilation time when exception handlers aren't present.
The new invariant for potentially throwing nodes is: Nodes that can
potentially throw either have both IfSuccess/IfException projections as
the only control uses and no direct control uses, or no projections at
all and solely direct control uses.
R=jarin@chromium.org
Change-Id: I3d9cd816d74ad5af13e0673da7ec7a98f1ecdc7e
Reviewed-on: https://chromium-review.googlesource.com/449715
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43814}
Removes the --ignition-staging flag since it is no longer used
by anything and won't be a shipping configuration. Also removes
ignition_turbo variant from testrunner, since it is now
the same as the turbofan variant.
BUG=v8:4280
Change-Id: I3b96e986879fc70b8e202fe9496334828acdd0ba
Reviewed-on: https://chromium-review.googlesource.com/452621
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43806}
Reason for revert:
gcc bot is now flaky https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds/11863
Original issue's description:
> Collect type profile for DevTools
>
> Collect type information for JavaScript variables and display it
> in Chrome DevTools.
> Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
>
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is
> dynamically typed, and for complex
> source code it’s often hard to infer types. With type profiling, we
> can provide type information to JavaScript developers.
>
> This CL is a proof of concept. It collects type profile for
> assignments and simply prints the types to stdout.
>
> The output looks something like this:
>
> #my_var1
> #Object
> #number
> #string
> #number
> #undefined
> #string
> #Object
> #Object
>
>
> We use an extra slot in the feedback vector of assignments to
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given.
>
>
> Missing work:
> * Collect data for parameters and return values (currently only assignments).
> * Remove duplicates from the list of collected types and use a common base class.
> * Add line numbers or source position instead of the variable name.
>
>
>
> BUG=v8:5935
>
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Original-Commit-Position: refs/heads/master@{#43791}
> Committed: 0332bebde9
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43804}
> Committed: 6cf880f4b8TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2754573002
Cr-Commit-Position: refs/heads/master@{#43805}
Collect type information for JavaScript variables and display it
in Chrome DevTools.
Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
When debugging JavaScript, it’s helpful to know the type of
a variable, parameter, and return values. JavaScript is
dynamically typed, and for complex
source code it’s often hard to infer types. With type profiling, we
can provide type information to JavaScript developers.
This CL is a proof of concept. It collects type profile for
assignments and simply prints the types to stdout.
The output looks something like this:
#my_var1
#Object
#number
#string
#number
#undefined
#string
#Object
#Object
We use an extra slot in the feedback vector of assignments to
carry the list of types for that assignment. The extra slot is
only added when the flag --type-profile is given.
Missing work:
* Collect data for parameters and return values (currently only assignments).
* Remove duplicates from the list of collected types and use a common base class.
* Add line numbers or source position instead of the variable name.
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2707873002
Cr-Original-Commit-Position: refs/heads/master@{#43791}
Committed: 0332bebde9
Review-Url: https://codereview.chromium.org/2707873002
Cr-Commit-Position: refs/heads/master@{#43804}
These tests fail with the new asm.js parser, because they are invalid under
a more strict reading of the spec.
NOTE: These also fail to validate when run in Firefox.
BUG=v8:4203
BUG=v8:6090
R=aseemgarg@chromium.org,eholk@chromium.org
Review-Url: https://codereview.chromium.org/2745393002
Cr-Commit-Position: refs/heads/master@{#43803}
Reason for revert:
gcc bot has problems with this: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20gcc%204.8/builds/11858
Original issue's description:
> Collect type profile for DevTools
>
> Collect type information for JavaScript variables and display it
> in Chrome DevTools.
> Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
>
> When debugging JavaScript, it’s helpful to know the type of
> a variable, parameter, and return values. JavaScript is
> dynamically typed, and for complex
> source code it’s often hard to infer types. With type profiling, we
> can provide type information to JavaScript developers.
>
> This CL is a proof of concept. It collects type profile for
> assignments and simply prints the types to stdout.
>
> The output looks something like this:
>
> #my_var1
> #Object
> #number
> #string
> #number
> #undefined
> #string
> #Object
> #Object
>
>
> We use an extra slot in the feedback vector of assignments to
> carry the list of types for that assignment. The extra slot is
> only added when the flag --type-profile is given.
>
>
> Missing work:
> * Collect data for parameters and return values (currently only assignments).
> * Remove duplicates from the list of collected types and use a common base class.
> * Add line numbers or source position instead of the variable name.
>
>
>
> BUG=v8:5935
>
> Review-Url: https://codereview.chromium.org/2707873002
> Cr-Commit-Position: refs/heads/master@{#43791}
> Committed: 0332bebde9TBR=yangguo@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org,mstarzinger@chromium.org,franzih@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2749673003
Cr-Commit-Position: refs/heads/master@{#43798}
- Implements vuzp, vtrn instructions for q-registers.
- Refactors vmvn, vswp to use common unary op helper fn.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2739033002
Cr-Commit-Position: refs/heads/master@{#43795}
This is a cleanup in preparation to implement calling imported
functions via the wasm interpreter.
For imported functions, we do not create entries in the
interpreter_code_ vector any more.
I also simplified the interface and removed unused or redundant return
values. More things are now DCHECKed instead of bailing out.
Also, we previously had two PushFrame methods: One is supposed to
initialize the interpreter from external code (i.e. adds the first
frame to the stack), the other one is used to push new frames on the
frame stack for called functions. This CL renames the first to
InitFrame, and makes it use the second one. The other remaining user is
the DoCall method.
R=titzer@chromium.org
BUG=v8:5822
Change-Id: Id09ff1e3256428fbd8c955e4664507a0c3167e53
Reviewed-on: https://chromium-review.googlesource.com/453482
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43793}
Collect type information for JavaScript variables and display it
in Chrome DevTools.
Design Doc: https://docs.google.com/a/google.com/document/d/1O1uepXZXBI6IwiawTrYC3ohhiNgzkyTdjn3R8ysbYgk/edit?usp=sharing
When debugging JavaScript, it’s helpful to know the type of
a variable, parameter, and return values. JavaScript is
dynamically typed, and for complex
source code it’s often hard to infer types. With type profiling, we
can provide type information to JavaScript developers.
This CL is a proof of concept. It collects type profile for
assignments and simply prints the types to stdout.
The output looks something like this:
#my_var1
#Object
#number
#string
#number
#undefined
#string
#Object
#Object
We use an extra slot in the feedback vector of assignments to
carry the list of types for that assignment. The extra slot is
only added when the flag --type-profile is given.
Missing work:
* Collect data for parameters and return values (currently only assignments).
* Remove duplicates from the list of collected types and use a common base class.
* Add line numbers or source position instead of the variable name.
BUG=v8:5935
Review-Url: https://codereview.chromium.org/2707873002
Cr-Commit-Position: refs/heads/master@{#43791}
When a FunctionEntryHook parameter was passed to isolate creation,
we ignored any existing snapshots anyway. Since the ability to
bootstrap from scratch will be removed from snapshot builds, the
FunctionEntryHook feature must depend on a no-snapshot build.
BUG=v8:6055
Review-Url: https://codereview.chromium.org/2733203002
Cr-Commit-Position: refs/heads/master@{#43779}
This fixes a corner-case in {KeyAccumulator::CollectOwnJSProxyKeys}
where the keys returned by {JSReceiver::OwnPropertyKeys} for an array
are not internalized and hence have a diverging identity from keys
returned by the "ownKeys" trap of a proxy.
R=cbruni@chromium.org
TEST=mjsunit/regress/regress-crbug-700678
BUG=chromium:700678
Change-Id: I5efd012eade14bd45c69e4abb0aeda684baf38f0
Reviewed-on: https://chromium-review.googlesource.com/452979
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43775}
In Isolate::CaptureSimpleStackTrace, we were ignoring interpreter entry
frames so far. This CLs changes this to gets the interpreted stack from
the wasm interpreter and add the frames to the FrameArray.
R=ahaas@chromium.org, titzer@chromium.org
BUG=v8:5822
Change-Id: I705909532ff28af412ff809da94522866eaa1c0d
Reviewed-on: https://chromium-review.googlesource.com/452378
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43772}
As the code isn't used, but would have to be ported from hand-written
assembly to CodeStubAssembler anyways, I propose to remove it and
restore it if we decide that we actually need it.
R=vogelheim@chromium.org
BUG=
Change-Id: Iffd7fc6ec534b1dd7a9144da900424355c8a7a02
Reviewed-on: https://chromium-review.googlesource.com/453461
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43763}
This is basically the minimum viable signal handler for Wasm bounds checks.
It includes the TLS check and the fine grained instructions checks. These
two checks provide most of the safety for the signal handler. Future CLs will
add code range and data range checks for more robustness.
The trap handling code and data structures are all in src/trap-handler, with
the code that actually runs in the signal handler confined to
src/trap-handler/signal-handler.cc.
This changes adds a new V8 API that the embedder should call from a signal
handler that will give V8 the chance to handle the fault first. For hosts that
do not want to implement their own signal handler, we include the option to
install a simple one. This simple handler is also used for the tests.
When a Wasm module is instantiated, information about each function is passed
to the trap handler, which is used to classify faults. These are removed during
the instance finalizer.
Several future enhancements are planned before turning this on by default.
Obviously, the additional checks will be added to MaybeHandleFault. We are
also planning to add a two-level CodeObjectData table that is grouped by
isolates to make cleanup easier and also reduce potential for contending on
a single data structure.
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
Review-Url: https://codereview.chromium.org/2371833007
Cr-Original-Original-Commit-Position: refs/heads/master@{#43523}
Committed: a5af7fe9ee
Review-Url: https://codereview.chromium.org/2371833007
Cr-Original-Commit-Position: refs/heads/master@{#43755}
Committed: 338622d7ca
Review-Url: https://codereview.chromium.org/2371833007
Cr-Commit-Position: refs/heads/master@{#43759}
This reverts the previous revert, commit
5a04f4fd68.
Previously reverted changes:
> Revert "[SAB] Move Atomics builtins to C++"
>
> This reverts commit 2b9840d86f.
>
> Revert "[SAB] Remove unreachable Uint8Clamped atomics paths"
>
> This reverts commit d1160fb14f.
>
> Revert "Remove tiny unit test for MinSimple/MaxSimple"
>
> This reverts commit 837760ecb7.
>
> Revert "Remove infrastructure for experimental JS natives"
>
> This reverts commit 8cfe45b6f1.
These changes were reverted to improve a perf regression on a Chrome
bot. Since then, the regression has reappeared, then disappeared again
all from seemingly unrelated changes.
BUG=v8:6033
TBR=adamk@chromium.org,hpayer@chromium.org,yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2732213005
Cr-Commit-Position: refs/heads/master@{#43758}
Reason for revert:
ASAN breakage, such as https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/19111/steps/Check/logs/grow-memory
Original issue's description:
> [wasm] Initial signal handler
>
> This is basically the minimum viable signal handler for Wasm bounds checks.
> It includes the TLS check and the fine grained instructions checks. These
> two checks provide most of the safety for the signal handler. Future CLs will
> add code range and data range checks for more robustness.
>
> The trap handling code and data structures are all in src/trap-handler, with
> the code that actually runs in the signal handler confined to
> src/trap-handler/signal-handler.cc.
>
> This changes adds a new V8 API that the embedder should call from a signal
> handler that will give V8 the chance to handle the fault first. For hosts that
> do not want to implement their own signal handler, we include the option to
> install a simple one. This simple handler is also used for the tests.
>
> When a Wasm module is instantiated, information about each function is passed
> to the trap handler, which is used to classify faults. These are removed during
> the instance finalizer.
>
> Several future enhancements are planned before turning this on by default.
> Obviously, the additional checks will be added to MaybeHandleFault. We are
> also planning to add a two-level CodeObjectData table that is grouped by
> isolates to make cleanup easier and also reduce potential for contending on
> a single data structure.
>
> BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
>
> Review-Url: https://codereview.chromium.org/2371833007
> Cr-Original-Commit-Position: refs/heads/master@{#43523}
> Committed: a5af7fe9ee
> Review-Url: https://codereview.chromium.org/2371833007
> Cr-Commit-Position: refs/heads/master@{#43755}
> Committed: 338622d7caTBR=ahaas@chromium.org,bradnelson@google.com,hpayer@chromium.org,jochen@chromium.org,mark@chromium.org,mseaborn@chromium.org,titzer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
Review-Url: https://codereview.chromium.org/2744383002
Cr-Commit-Position: refs/heads/master@{#43757}
This is basically the minimum viable signal handler for Wasm bounds checks.
It includes the TLS check and the fine grained instructions checks. These
two checks provide most of the safety for the signal handler. Future CLs will
add code range and data range checks for more robustness.
The trap handling code and data structures are all in src/trap-handler, with
the code that actually runs in the signal handler confined to
src/trap-handler/signal-handler.cc.
This changes adds a new V8 API that the embedder should call from a signal
handler that will give V8 the chance to handle the fault first. For hosts that
do not want to implement their own signal handler, we include the option to
install a simple one. This simple handler is also used for the tests.
When a Wasm module is instantiated, information about each function is passed
to the trap handler, which is used to classify faults. These are removed during
the instance finalizer.
Several future enhancements are planned before turning this on by default.
Obviously, the additional checks will be added to MaybeHandleFault. We are
also planning to add a two-level CodeObjectData table that is grouped by
isolates to make cleanup easier and also reduce potential for contending on
a single data structure.
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
Review-Url: https://codereview.chromium.org/2371833007
Cr-Original-Commit-Position: refs/heads/master@{#43523}
Committed: a5af7fe9ee
Review-Url: https://codereview.chromium.org/2371833007
Cr-Commit-Position: refs/heads/master@{#43755}
We emulate break by callling breakProgramCallback function in debugger context, we can just use HandleDebugBreak.
It allows us to move all stepping logic to debug.cc later and remove one usage of debugger context.
+ two minor issues fixed, see tests.
BUG=v8:5510
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2738503006
Cr-Commit-Position: refs/heads/master@{#43750}
A couple infrastructure changes went into this patch:
- test262 changed from expecting $ to $262
- upstream-local-tests.sh gets a command-line parameter for ease of use
- Fixed up the FAIL_SLOPPY infrastructure, which seems to have bit-rotted
- Inserted a terrible hack to get around test262 tests with a $ in the name
Drive-by fix for the length of Intl.DateTimeFormat.prototype.format
R=adamk
Review-Url: https://codereview.chromium.org/2733843002
Cr-Commit-Position: refs/heads/master@{#43749}
This makes it possible to directly request testing noturbofan_stress on the command line.
BUG=chromium:682617
TBR=mstarzinger@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org
NOTRY=true
Change-Id: I6ba9a022c4ef24fb5abe6878d3f2f972e8461eb8
Reviewed-on: https://chromium-review.googlesource.com/453180
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43748}
Part of the performance and refactoring work to move the TypedArray
constructors into CSA. This CL moves ConstructByArrayBuffer from JS
to CSA.
BUG=v8:5977
Change-Id: I0a200e6b3f6261ea2372ea9c3d3ca98e313cf2c5
Reviewed-on: https://chromium-review.googlesource.com/451620
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43747}
Test regress-694088.js is adapted for execution on big endian platforms.
TEST=test/mjsunit/compiler/regress-694088.js
BUG=
Review-Url: https://codereview.chromium.org/2739403002
Cr-Commit-Position: refs/heads/master@{#43746}
The switch statement itself is part of the switch block.
However, the source position of the statement is outside of
the block. This leads to confusion for the debugger, if the
switch block pushes a block context: the current context is
a block context, but the scope analysis based on the current
source position tells the debugger that we should be outside
the scope, so we should have the function context.
R=marja@chromium.org
BUG=v8:6085
Review-Url: https://codereview.chromium.org/2744213003
Cr-Commit-Position: refs/heads/master@{#43744}
Add a mechanic to set these Builtin exception predictions per-Isolate
rather than per-Context in the Bootstrapper.
Also add Debugger tests which would fail without these prediction
modes set.
Does not yet test for AsyncFromSyncIteratorPrototypeReturn, as this
requires AsyncGenerators and `yield*` to be hit.
BUG=chromium:691875
R=yangguo@chromium.org, jgruber@chromium.org, gsathya@chromium.org
Change-Id: Ic2d2aba3870cce2f7321080f4278875edf253c76
Reviewed-on: https://chromium-review.googlesource.com/451967
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#43742}
With this change, on ia32 and x64, a load from memory into a register can be replaced by a memory operand for integer binops if it makes sense.
BUG=
Review-Url: https://codereview.chromium.org/2728533003
Cr-Commit-Position: refs/heads/master@{#43739}
This fixes the catch predictions for the following builtins --
AsyncFunctionAwaitCaught
AsyncFunctionAwaitUncaught
PromiseResolveClosure
ResolvePromise
PromiseResolve
Added tests for each.
Added whitelist for builtins behind a flag.
BUG=chromium:691875
Change-Id: I816cafdb69f0c9f1eefc440a0a44c36713d0b7dc
Reviewed-on: https://chromium-review.googlesource.com/450894
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43725}
Now that the --turbo flag is on by default, this implication makes it
impossible to disable the runtime profiler to prevent functions from
being considered hot. Essentially the --nocrankshaft flag was borked.
R=machenbach@chromium.org
Change-Id: I698008b4b69038e8bfab6d8ec3ccf57e2fd71701
Reviewed-on: https://chromium-review.googlesource.com/452619
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43720}
- lower the cutoff-threshold for bottom up graphs to 1%
- show all builtins/stubs/ics by default
R=jkummerow@chromium.org
Change-Id: I522173155b817ae20a37c40ecf411f2b55d82105
Reviewed-on: https://chromium-review.googlesource.com/452482
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43717}
Specifically, add bytecodes for Call0, Call1, Call2, CallProperty0, CallProperty1,
and CallProperty2. Also share the bytecode handler code between between
equivalent CallX and CallPropertyX handlers.
Review-Url: https://codereview.chromium.org/2684993002
Cr-Original-Commit-Position: refs/heads/master@{#43290}
Committed: 00d6f1f80a
Review-Url: https://codereview.chromium.org/2684993002
Cr-Commit-Position: refs/heads/master@{#43700}
The optimization
NumberFloor(NumberDivide(lhs, rhs))
to
NumberToInt32(NumberDivide(lhs, rhs))
for potentially negative lhs is not valid, since Math.floor rounds
towards -infinity, whereas ToInt32 truncates.
BUG=chromium:699282
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2743673002
Cr-Commit-Position: refs/heads/master@{#43699}
It depends on constant field tracking and currently disabled.
BUG=v8:5495
Change-Id: I6202cddfc2d32b5a06c5ab00c42caa6e276a3eb1
Reviewed-on: https://chromium-review.googlesource.com/451639
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43687}
This fixes an incorrect usage of String::Flatten in EscapeRegExpSource.
It also adds %ConstructConsString (to easily and reliably construct cons
strings in tests) and Factory::NewConsString (to enable guaranteed cons
string construction without preemptive flattening attempts).
BUG=chromium:698790
Review-Url: https://codereview.chromium.org/2736383003
Cr-Commit-Position: refs/heads/master@{#43686}
- Changes input filtering to test NaNs, but skip very large or very
small inputs, which may cause imprecision on some platforms.
- Changes expected result filtering to only skip NaNs.
LOG=N
BUG=6020
Review-Url: https://codereview.chromium.org/2738703006
Cr-Commit-Position: refs/heads/master@{#43681}
This fixes various allocator methods to properly propagate {nullptr} to
callers without accidentally dereferencing it. We also disable one test
case for stress mode as it runs out of memory due to inlining limits
being lifted in the stress mode.
R=bmeurer@chromium.org
TEST=mjsunit/array-natives-elements
BUG=v8:6061
Change-Id: Id0a7b826a8612d00b4f4ae8aa0bea011c50890ca
Reviewed-on: https://chromium-review.googlesource.com/451365
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43672}
The immediate passed to cmpw can be either a signed 16-bit or an
unsigned 16-bit integer, but the DCHECK was testing for signed 16-bit
values only.
R=mstarzinger@chromium.org
BUG=v8:6063
Review-Url: https://codereview.chromium.org/2735363002
Cr-Commit-Position: refs/heads/master@{#43671}
This introduces a new truncation bit for truncation of minus-zero to zero.
At the moment it is only used to handle the limit cases of deopt, such as the
one in the Google maps workload (see simplified version below), where the -q
(which is desugared to q * -1.0) currently deoptimizes because the result would
produce minus zero. To handle this situation, we exploit the knowledge that
righthand side of + cannot be -0, so even if lefthand side was -0, the result
would still be 0 (so the + operation cannot distinguish between left hand side
0 and -0).
function f(q) {
q -= 4;
return (-q) + q;
}
f(10);
f(10);
%OptimizeFunctionOnNextCall(f);
f(4);
Review-Url: https://codereview.chromium.org/2734253002
Cr-Commit-Position: refs/heads/master@{#43661}
- Implements Float32x4 Mul, Min, Max for ARM.
- Implements Float32x4 relational ops for ARM.
- Implements reciprocal, reciprocal square root estimate/refinement ops for ARM.
- Reorganizes tests to eliminate need for specialized float ref fns in tests.
- Rephrases Gt, Ge in terms of Lt, Le, and eliminates the redundant machine
operators.
- Renames test-run-wasm-simd test names to match instructions.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2729943002
Cr-Commit-Position: refs/heads/master@{#43658}
Once we enabled --turbo by default we need to turn all the implications
off with --no-turbo as well. Chrome sets flags in V8 using SetFlagFromString,
which enforces the implications each time it is called. Therefore, if --turbo
is enabled by default, and an unrelated flag is set, the turbo implications are
enabled but not later disabled if we set --no-turbo. To fix this, add negative
implications as well.
BUG=chromium:692409
Change-Id: Iadb0ca542f49ba65c7419cda8c7a03636a8d5ba9
Reviewed-on: https://chromium-review.googlesource.com/451320
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43655}
Fix two issues in the interpreter entry for 64 bit return values on
32 bit platforms. First, the effect chain was slightly incorrect, second
the order of the returned values was wrong.
Also add a test case for this.
Tested on x64, ia32 and s390.
Plus drive-by fix in Int64Lowering to reuse global constants for
big-endian/little-endian disambiguation.
R=titzer@chromium.org
BUG=v8:5822
Review-Url: https://codereview.chromium.org/2731713002
Cr-Commit-Position: refs/heads/master@{#43654}
This requires serialized data to track the number of API-provided
external references separately.
And it flushes out a case of serialized data corruption (stored "length"
field too large) that we didn't handle without crashing.
BUG=v8:6055
Review-Url: https://codereview.chromium.org/2736923002
Cr-Commit-Position: refs/heads/master@{#43649}
malloc(0) returning 0 is expected behavior on AIX but
compiling with -D_LINUX_SOURCE_COMPAT, malloc(0) should
return a valid pointer (which we do define for AIX). However,
including cstdlib resets the behaviour of _LINUX_SOURCE_COMPAT.
GCC bug: 79839
R=jochen@chromium.org, titzer@chromium.org
BUG=
LOG=N
Review-Url: https://codereview.chromium.org/2732743002
Cr-Commit-Position: refs/heads/master@{#43647}
So far we only recognize the special
NumberFloor(NumberDivide(lhs, rhs))
subgraph when both lhs and rhs are in the Unsigned32 range, and the
result is a PlainNumber. Extend this pattern matching to also cover
NumberFloor(SpeculativeNumberDivide(lhs, rhs))
and to replace the NumberFloor with NumberToInt32 truncation if the
lhs value is in Signed32 range and the rhs is in Unsigned32 range.
R=jarin@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2739573004
Cr-Commit-Position: refs/heads/master@{#43642}
This pretty much rewrites the preparsed scope data collection. We used to store
the allocation result, but it's faster to just store the raw data which is
needed for deciding it later. (This way we don't need to run the allocation
algorithm for just getting this data.)
For each variable: is_used, maybe_assigned,
has_forced_context_allocation, and for each scope:
inner_scope_calls_eval_.
In addition, this CL moves data handling out of Scope and into
PreParsedScopeData where it belongs and simplifies the API for
PreParsedScopeData.
BUG=v8:5516
R=vogelheim@chromium.org
Change-Id: Ia5a4fa52f585cd4f483ce9a92f2dd7d9754f34ed
Reviewed-on: https://chromium-review.googlesource.com/451273
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43641}
The parser already changes all negative equality comparison operations
to their positive pendants in {ParserBase::ParseBinaryExpression}. No
other source of the Token::NE exists in the system. We can remove all
handling from the compiler and interpreter backends.
R=bmeurer@chromium.org
Change-Id: I58722c08dd8e498f20c65886fce86b8172737b10
Reviewed-on: https://chromium-review.googlesource.com/449716
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43627}
Part of the performance and refactoring work to move the TypedArray
constructors into CSA. This CL moves ConstructByLength from JS
to CSA.
There are still other callers to typed_array_initialize in
typedarray.js, so we share the implementation using DoInitialize.
In a later CL we can split apart DoInitialize once we have more
TA constructors written in CSA, so that we can reuse specific
parts more easily.
BUG=v8:5977
Change-Id: Ia51e8363970e9a025a82933e56a7baaf82cb1eec
Reviewed-on: https://chromium-review.googlesource.com/448220
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43626}
Deletion can cause collisions to be moved in the map which breaks iteration.
For now just remove this support. Also add some additional collision tests
to the test.
BUG=v8:5203
Change-Id: I54a0a4af51da08b3f963dc1d7661dba291e4efea
Reviewed-on: https://chromium-review.googlesource.com/445900
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43621}
If the top-level function cannot be found, we previously assumed an
invocation count of 1. This is wrong when we expect the invocation
counts to be reset for precise coverage.
TBR=jgruber@chromium.orgR=caseq@chromium.org,pfeldman@chromium.org
BUG=v8:5808
Review-Url: https://codereview.chromium.org/2723003007
Cr-Commit-Position: refs/heads/master@{#43620}
This CL provide type with each break location, type could be: call, return or debugger statement.
BUG=chromium:432469
R=yangguo@chromium.org,dgozman@chromium.org
Review-Url: https://codereview.chromium.org/2728563002
Cr-Commit-Position: refs/heads/master@{#43619}
The concurrent marker uses ObjectVisitor to iterate pointers in objects
and local marking bitmaps to keep track of visited objects.
To keep it simple for now, I removed support for multiple tasks
and canceling unfinished tasks.
BUG=chromium:694255
Review-Url: https://codereview.chromium.org/2732053002
Cr-Commit-Position: refs/heads/master@{#43618}
This method could be called on pause and will do stepInto next scheduled callback if any will happen until next break.
First implementation support only callbacks chained by Promise.prototype.then.
BUG=chromium:432469
R=yangguo@chromium.org,dgozman@chromium.org
Review-Url: https://codereview.chromium.org/2723273002
Cr-Commit-Position: refs/heads/master@{#43616}
This patch adds a trivial ConcurrentMarking class that can start
background tasks.
BUG=chromium:694255
Review-Url: https://codereview.chromium.org/2728363002
Cr-Commit-Position: refs/heads/master@{#43615}
From asm.js code we might get an empty ArrayBuffer as heap memory. In
this case, both the old memory start and the new memory start will be
nullptr. The size however has to be patched from default_size to 0.
This CL changes code specialization to be able to either patch memory
references, or patch memory sizes or both.
R=titzer@chromium.org, ahaas@chromium.org
BUG=chromium:698587
Change-Id: I4d9d811d75cb83842f23df317e8e7fc02aeb5146
Reviewed-on: https://chromium-review.googlesource.com/450257
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43613}
A previous patch lifting the restriction on invalid escape sequences in
tagged templates had a bug when two template tokens appeared immediately
adject to each other. This moves invalid escape information from the
tokenizer state proper into the TokenDesc, preventing the overwriting
which caused this issue.
Previous CL is at
https://codereview.chromium.org/2665513002
BUG=v8:6029,v8:5546
Review-Url: https://codereview.chromium.org/2724003006
Cr-Commit-Position: refs/heads/master@{#43596}
We don't need the JSStrictNotEqual operator in the compiler, because
this is never generated by the BytecodeGraphBuilder, and the code in
the AstGraphBuilder was dead code. Also remove the backing builtin
StrictNotEqual.
R=mstarzinger@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2727003006
Cr-Commit-Position: refs/heads/master@{#43594}
Spinning up a new background task is expensive, and many times an existing
task will finish it's work before a new task starts work on a job, so enable
the existing tasks to do more than one background job.
BUG=v8:5203
Change-Id: Ibbef317c8bb3921c36a096fed88d244716be9c42
Reviewed-on: https://chromium-review.googlesource.com/441706
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43593}
The callsite in ConstructByArrayBuffer could have a length that is
above Smi range if the buffer had such a length. Check this before
calling. Add a test too.
BUG=v8:5977, chromium:698201
Change-Id: Ic22046a31607f1f85642c8caf7f5ed064edb3110
Reviewed-on: https://chromium-review.googlesource.com/449813
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43589}
If the imported wasm function is being debugged (i.e. redirects to the
interpreter), call it via the JS_TO_WASM stub, such that we can disable
the breakpoint later by patching the exported function.
This also contains a drive-by fix in wasm-translation.cc (for the case
that all known positions are bigger than the requested one).
R=titzer@chromium.org, kozyatinskiy@chromium.org
BUG=v8:5971, v8:5822
Review-Url: https://codereview.chromium.org/2720813002
Cr-Commit-Position: refs/heads/master@{#43583}
We should throw a RangeError for offset % elementSize before
length.toPrimitive is observable. Adds a test that checks this, too.
BUG=v8:6037
Change-Id: Ie9f2551c8e8fb0018b508762ac93cdc470e15dde
Reviewed-on: https://chromium-review.googlesource.com/449792
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43582}
In lazy compilation, we only compile one function at a time, and we
might not have the wire bytes of the whole module available.
This CL prepares the WasmCompilationUnit for this setting.
It will also be helpful for streaming compilation.
Also, the ErrorThrower (which might heap-allocate) is not stored in the
WasmCompilationUnit any more. Instead, it is passed to the
FinishCompilation method which is allowed to heap-allocate.
R=titzer@chromium.org, ahaas@chromium.org
BUG=v8:5991
Review-Url: https://codereview.chromium.org/2726553003
Cr-Commit-Position: refs/heads/master@{#43573}
We can compile a !== a and Number.isNaN(a) to ObjectIsNaN. The former is
commonly used to check for NaN, i.e. in case of equals in AngularJS.
R=jarin@chromium.org
BUG=v8:5267
Review-Url: https://codereview.chromium.org/2722483003
Cr-Commit-Position: refs/heads/master@{#43572}
This involved adding a count_ member to SloppyBlockFunctionMap, so
to avoid making DeclarationScope larger, this patch makes the
creation of the map lazy, thus reducing the size of DeclarationScope
by several words in the process.
BUG=chromium:688567
Change-Id: If9a9eb2ccc01690fe10edadb3aa9625454ff4a19
Reviewed-on: https://chromium-review.googlesource.com/448701
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43558}
- Implements Select instructions using a single ARM vbsl instruction.
- Renames boolean machine operators to match renamed S1xN machine types.
- Implements S1xN vector logical ops, AND, OR, XOR, NOT for ARM.
- Implements S1xN AnyTrue, AllTrue ops for ARM.
- Eliminates unused SIMD op categories in opcodes.h.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2711863002
Cr-Commit-Position: refs/heads/master@{#43556}
This CL fixes a bug in the implementation of the code generation of
kArm64Tst32, where the shift input operand of kArm64Tst32 was ignored.
Please take a special look at the fix in kArm64Tst. I applied the fix
there as well, but because of differences in the instruction selector
I was not able to write a test for it.
R=v8-arm-ports@googlegroups.com
BUG=v8:6028
Review-Url: https://codereview.chromium.org/2729853003
Cr-Commit-Position: refs/heads/master@{#43555}
Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
because we always go to the C++ builtin. Port the builtin to CSA
to improve performance, and to clean up the implementation, which is
split across multiple files and pieces at the moment.
This CL increases the performance with --future to roughly the same
as with crankshaft.
BUG=v8:5977
Change-Id: Id0d91a4592de41a3a308846d79bd44a608931762
Reviewed-on: https://chromium-review.googlesource.com/448537
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43548}
- Perform lane checks using FP compare instead of reinterpret casts. 0 and -0
will be different under I32 compare.
- Some arithmetic operations can generate NaN results, such as adding -Inf
and +Inf. Skip these tests until we have a way to do more sophisticated
FP comparisons in the SIMD tests.
- Eliminate a redundant F32x4 parameter for FP SIMD vector checking. We will only have this one FP type.
LOG=N
BUG=v8:6020
Review-Url: https://codereview.chromium.org/2594043002
Cr-Original-Commit-Position: refs/heads/master@{#42154}
Committed: 5560bbb498
Review-Url: https://codereview.chromium.org/2594043002
Cr-Commit-Position: refs/heads/master@{#43528}
Reason for revert:
Breaks tree, i.e. https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN/builds/18928/steps/Check/logs/grow-memory
Original issue's description:
> [wasm] Initial signal handler
>
> This is basically the minimum viable signal handler for Wasm bounds checks.
> It includes the TLS check and the fine grained instructions checks. These
> two checks provide most of the safety for the signal handler. Future CLs will
> add code range and data range checks for more robustness.
>
> The trap handling code and data structures are all in src/trap-handler, with
> the code that actually runs in the signal handler confined to
> src/trap-handler/signal-handler.cc.
>
> This changes adds a new V8 API that the embedder should call from a signal
> handler that will give V8 the chance to handle the fault first. For hosts that
> do not want to implement their own signal handler, we include the option to
> install a simple one. This simple handler is also used for the tests.
>
> When a Wasm module is instantiated, information about each function is passed
> to the trap handler, which is used to classify faults. These are removed during
> the instance finalizer.
>
> Several future enhancements are planned before turning this on by default.
> Obviously, the additional checks will be added to MaybeHandleFault. We are
> also planning to add a two-level CodeObjectData table that is grouped by
> isolates to make cleanup easier and also reduce potential for contending on
> a single data structure.
>
> BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
>
> Review-Url: https://codereview.chromium.org/2371833007
> Cr-Commit-Position: refs/heads/master@{#43523}
> Committed: a5af7fe9eeTBR=ahaas@chromium.org,bradnelson@google.com,hpayer@chromium.org,jochen@chromium.org,mark@chromium.org,mseaborn@chromium.org,titzer@chromium.org,eholk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
Review-Url: https://codereview.chromium.org/2723133003
Cr-Commit-Position: refs/heads/master@{#43525}
This is basically the minimum viable signal handler for Wasm bounds checks.
It includes the TLS check and the fine grained instructions checks. These
two checks provide most of the safety for the signal handler. Future CLs will
add code range and data range checks for more robustness.
The trap handling code and data structures are all in src/trap-handler, with
the code that actually runs in the signal handler confined to
src/trap-handler/signal-handler.cc.
This changes adds a new V8 API that the embedder should call from a signal
handler that will give V8 the chance to handle the fault first. For hosts that
do not want to implement their own signal handler, we include the option to
install a simple one. This simple handler is also used for the tests.
When a Wasm module is instantiated, information about each function is passed
to the trap handler, which is used to classify faults. These are removed during
the instance finalizer.
Several future enhancements are planned before turning this on by default.
Obviously, the additional checks will be added to MaybeHandleFault. We are
also planning to add a two-level CodeObjectData table that is grouped by
isolates to make cleanup easier and also reduce potential for contending on
a single data structure.
BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277
Review-Url: https://codereview.chromium.org/2371833007
Cr-Commit-Position: refs/heads/master@{#43523}
This reverts commit b23b2c107b.
Reason for revert: Makes Linux debug bot sad
Original change's description:
> [builtins] Port TypedArrayInitialize to CodeStubAssembler.
>
> Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
> because we always go to the C++ builtin. Port the builtin to CSA
> to improve performance, and to clean up the implementation, which is
> split across multiple files and pieces at the moment.
>
> This CL increases the performance with --future to roughly the same
> as with crankshaft.
>
> BUG=v8:5977
>
> Change-Id: I5a4c4b544a735a56290b85bf33c2f3718df7e2b8
> Reviewed-on: https://chromium-review.googlesource.com/445717
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#43518}
TBR=cbruni@chromium.org,petermarshall@chromium.org,bmeurer@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5977
Change-Id: I5d5bc8b4677a405c716d78e688af80ae9c737b4a
Reviewed-on: https://chromium-review.googlesource.com/448558
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43520}
Turbofan is a lot slower than Crankshaft at constructing TypedArrays,
because we always go to the C++ builtin. Port the builtin to CSA
to improve performance, and to clean up the implementation, which is
split across multiple files and pieces at the moment.
This CL increases the performance with --future to roughly the same
as with crankshaft.
BUG=v8:5977
Change-Id: I5a4c4b544a735a56290b85bf33c2f3718df7e2b8
Reviewed-on: https://chromium-review.googlesource.com/445717
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43518}
This fixes a corner-case in the above predicate that was introduced to
allow fully disabling optimization using %NeverOptimizeFunction. This
property of a function is a transient property (i.e. changes over time),
whereas {UseTurboFan} is designed to be a static property (i.e. gives
same answer over time). Violating this led to cases where functions got
optimization disabled for other reasons would suddenly be baselined.
The correct place to check transient properties is when optimization is
requested.
R=jarin@chromium.org
TEST=mjsunit/never-baseline
Change-Id: I37eb0c70d2b39704be29fd4bda76975bfbede66b
Reviewed-on: https://chromium-review.googlesource.com/447937
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43514}
String::SlowFlatten assumed that ConsStrings with empty first parts have
flattened strings as their second part. TurboFan, however, can create
ConsStrings with empty first parts and arbitrary second parts. With
this CL we call String::Flatten on the second part of a ConsString if
the first part is empty, but only when String::Flatten would not call
String::SlowFlatten.
R=jkummerow@chromium.org
BUG=chromium:696651
Change-Id: I9acb681de1be695e1ec2f6f6d28b9e4dc4344e98
Reviewed-on: https://chromium-review.googlesource.com/448457
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43513}
This CL fixes unused lambda captures for big endian targets when Clang
is used for build V8.
TEST=
BUG=
Review-Url: https://codereview.chromium.org/2725613002
Cr-Commit-Position: refs/heads/master@{#43511}
The maybe-assigned flag of the catch variable was not preserved.
BUG=v8:5636,chromium:696332
Change-Id: I9c55e1b1312bdebc53bc45bc3ca1c982bdbe9846
Reviewed-on: https://chromium-review.googlesource.com/447680
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43506}
BUG=v8:6022
Change-Id: I54205cb3ecc2dd31ed62e55726f0ec5fcd202c30
Reviewed-on: https://chromium-review.googlesource.com/446349
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43500}
Previously, we over-approximated Scope::scope_calls_eval_ in
arrow functions: if either the outer scope or the arrow function
parameters had a direct eval call, we marked both scopes as calling
eval. This over-approximation kept getting us into trouble, though,
especially when eager or lazy parsing would disagree about the
"calls eval" bit.
This patch instead tracks eval calls accurately, using a boolean on
Scope::Snapshot that is reset as appropriately depending on whether
a particular AssignmentExpression turned out to be an arrow parameter
list or not.
BUG=chromium:691687
Change-Id: I527dc59b4d32a2797805ff26dc9f70b1311377b2
Reviewed-on: https://chromium-review.googlesource.com/446094
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43499}
This is more useful than always returning undefined.
BUG=v8:1569,v8:5978
Change-Id: Id10cf87f7865db1a85de412460eaead4e4bf3b62
Reviewed-on: https://chromium-review.googlesource.com/446846
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43498}
The order in which things were done wasn't quite correct and lead
to wrong behaviour for certain circular module graphs.
BUG=v8:1569,chromium:694566
Change-Id: I291186e261268c853a30ad891ff362904e0b28ef
Reviewed-on: https://chromium-review.googlesource.com/447399
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43497}
With the params (a, b, ...c) the param / variable declaration order used to be
"temp, temp, c, a, b". Now it is "temp, temp, a, b, c" as you'd expect. This
makes it easier for PreParser to match the parameter order of Parser.
R=verwaest@chromium.org
BUG=v8:5516
Change-Id: I79da04ef3f812bf52c032bed6263c009fecb7988
Reviewed-on: https://chromium-review.googlesource.com/447677
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43490}
Reason for revert:
With the Windows bots fixed in https://chromium-review.googlesource.com/445786 , this should be good to reland. Thanks, Michael!
Original issue's description:
> Revert of [test] Speculatively remove local-tests from archive (patchset #2 id:20001 of https://codereview.chromium.org/2643983002/ )
>
> Reason for revert:
> Breaks all windows bots:
> https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds/6811
>
> Original issue's description:
> > [test] Remove local-tests from test262 archive and add to .isolate
> >
> > This might help fix the bots, which are broken in e.g.,
> > https://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng_triggered/builds/14011
> >
> > The archive was added in order to transmit test262 tests more rapidly.
> > It doesn't serve much of a purpose for local-tests. I naively added
> > local-tests there out of symmetry. However, the BUILD.gn file does not
> > regenerate an archive when files are only deleted and not added or
> > changed. Since the performance concern is not present for the small
> > volume of local-tests, this patch reverts to the more normal mechanism
> > for sending over dependencies, with test262.isolate.
> >
> > R=adamk
> >
> > Review-Url: https://codereview.chromium.org/2643983002
> > Cr-Commit-Position: refs/heads/master@{#42485}
> > Committed: 9f545ea96f
>
> TBR=adamk@chromium.org,littledan@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/2640223003
> Cr-Commit-Position: refs/heads/master@{#42491}
> Committed: 4ffe0850dbTBR=adamk@chromium.org,machenbach@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review-Url: https://codereview.chromium.org/2725643002
Cr-Commit-Position: refs/heads/master@{#43488}
Unibrow is currently at Unicode version 7.0.0, which does not
include mongolian vowel separator (\u180E) as white space. In
order to appease test262 at the time however we kept it as a
whitespace.
Test262 has since then been updated. And while this is not an
update of unibrow, we are removing \u180E as white space here.
R=jshin@chromium.org, littledan@chromium.org
BUG=v8:5155
Review-Url: https://codereview.chromium.org/2720953003
Cr-Commit-Position: refs/heads/master@{#43485}
This relaxes the check if the test262 archive should be unpacked or not.
A bug in the swarming isolate processor for windows makes the old check for the data directory pass and not unpack.
With this work-around we actually start running tests on windows.
This also fixes the regexp for exception extraction and handles the windows drive letter.
It also strips whitespace to fix a case where a carriage return was included on windows.
BUG=v8:5872
Change-Id: I363925665b0bad7530a1f93a2ea8f39b056d4174
Reviewed-on: https://chromium-review.googlesource.com/445786
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43482}
The x64 side is included in https://chromium-review.googlesource.com/c/444226/
BUG=v8:5294
Change-Id: Ie255604c5e38c72e3c2b76e1ca3557a5fde108ee
Reviewed-on: https://chromium-review.googlesource.com/446394
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43481}
The above intrinsic by now has to perform a check whether the prototype
of a derived constructor is actually a constructor function itself. This
is done as part of the {JSGetConstructorCall} operator. The intrinsic
should just reduce down to the operator to maintain correct semantics.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-696622
BUG=chromium:696622
Change-Id: Ia19c188f17ad16b12248db1f01a01b8d7258499b
Reviewed-on: https://chromium-review.googlesource.com/447716
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43479}
The new NewUnmappedArgumentsElements node now takes two inputs:
- the frame holding the arguments (current frame or arguments adaptor frame)
- the length of the suffix of passed arguments to be copied into the backing store
These inputs are computed with two new node types:
ArgumentsFrame()
ArgumentsLength[formal_parameter_count,is_rest_length](Node* arguments_frame)
The node type NewRestParameterElements can now be expressed with NewUnmappedArgumentsElements and an appropriate length and is thus not needed anymore.
In escape analysis, we lower loads from the length field of NewUnmappedArgumentsElements with its length input and if we find out that no write access to the arguments elements exists, we replace element loads with direct stack access and replace the NewUnmappedArgumentsElements node with a node of the new node type ArgumentsElementsState. This corresponds to an ObjectState node and gets translated into a deoptimizer instruction to allocate the backing store. Together with the already existing deoptimizer support for the actual arguments object/rest parameters, this allows to remove all allocations for arguments objects/rest parameters in this case.
In the deoptimizer, we read the actual parameters from the stack while transforming the static deopt info into TranslatedValue objects.
If escape analysis cannot remove the backing store allocation, NewUnmappedArgumentsElements gets lo
BUG=v8:5726
Review-Url: https://codereview.chromium.org/2692753004
Cr-Commit-Position: refs/heads/master@{#43475}
This makes it no longer necessary to ensure that V8 and Blink have non-colliding
tags, which makes it easier for them to evolve independently, and also makes
the wire format more suitable for other V8 embedders, who would not
necessarily be surveyed before V8 introduced a new tag that might collide
with theirs.
BUG=chromium:686159
Review-Url: https://codereview.chromium.org/2709023003
Cr-Commit-Position: refs/heads/master@{#43466}
perf regression. See crbug.com/695653 for more info.
Revert "[SAB] Move Atomics builtins to C++"
This reverts commit 2b9840d86f.
Revert "[SAB] Remove unreachable Uint8Clamped atomics paths"
This reverts commit d1160fb14f.
Revert "Remove tiny unit test for MinSimple/MaxSimple"
This reverts commit 837760ecb7.
Revert "Remove infrastructure for experimental JS natives"
This reverts commit 8cfe45b6f1.
BUG=695653
TBR=hablich@chromium.org
Review-Url: https://codereview.chromium.org/2715223003
Cr-Commit-Position: refs/heads/master@{#43462}
When an instance of a constructor goes dictionary mode, this changes the initial map
of that constructor to also be in dictionary mode. This avoids spurious hidden class
creation, that also results in IC misses.
BUG=
Change-Id: I0e70f822ac345d0224f2092ec473621a603d4cc5
Reviewed-on: https://chromium-review.googlesource.com/446361
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43452}
This extends the existing typer for JS-level comparisons to also be
applied on simplified-level number comparisons. Now that nodes having
such operators are introduced early during graph construction, precise
type information has become more important.
R=jarin@chromium.org
TEST=unittests/TyperTest
Change-Id: Ibcfda36cadf72381b3c63138dd8ad2f6b1f7fbba
Reviewed-on: https://chromium-review.googlesource.com/445879
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43447}
Nodes having the {Throw} operator are just used as terminators for
control-flow leaving the function body with an exception completion,
they turn into basic-block terminators within the schedule. Actually
raising an exception is done solely via runtime calls. Hence {Throw}
nodes no longer need any value input.
R=bmeurer@chromium.org
Change-Id: Id6d8e46b12c4b84f4e7a8ac96623c8efb1f27b26
Reviewed-on: https://chromium-review.googlesource.com/446501
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43445}
Now that no harmony-flagged features are implemented in experimental
JS, most of this is simply dead code.
As PostExperimentals() is no longer needed, I also removed the use of
Import() in the debug context, allowing the deletion of PostDebug()
along with PostExperimentals(); cleanup code is moved to the
end of PostNatives.
Also gets rid of some longer-dead code in prologue.js related to
TypedArrays, and some duplicate code for setting up SharedArrayBuffer
builtins.
Review-Url: https://codereview.chromium.org/2705293004
Cr-Commit-Position: refs/heads/master@{#43418}
The DescriptorInterceptor should intercept all
Object.getOwnPropertyDescriptor calls. This CL fixes
the interceptor's behavior if the iterator state is
ACCESS_CHECK.
BUG=
Review-Url: https://codereview.chromium.org/2707263002
Cr-Commit-Position: refs/heads/master@{#43417}
Marking it as callable makes typeof return 'function' instead of
'object' when invoked on a remote context or object.
BUG=chromium:527190
Review-Url: https://codereview.chromium.org/2715593002
Cr-Commit-Position: refs/heads/master@{#43416}
If the RHS is 0 and we have Smi feedback, speculate that the result (the LHS)
will continue to be in the Unsigned31 range. This helps us avoid converting
the result to double when merging with Signed32.
R=jarin@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2709423002
Cr-Commit-Position: refs/heads/master@{#43415}
Adds a perf test for constructing a TypedArray from a regular array,
and from a pre-made ArrayBuffer. Runs both new tests with default and
future configurations for comparison.
BUG=v8:5977
Change-Id: Idd132ca879702c54b2947a0e57ed8fe782f2767f
Reviewed-on: https://chromium-review.googlesource.com/446342
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43412}
This is also needed so that PreParser doesn't need to gather more data for arrow
function params in order to create the uninteresting varblock scopes matching
the scopes created in Parser::BuildParameterInitializationBlock.
This cancels the changes in https://chromium-review.googlesource.com/c/444747
which make PreParser create uninteresting scopes for the normal (non-arrow)
function "eval in default param" case.
R=vogelheim@chromium.org
BUG=v8:5516
Change-Id: I8957ac0796d8738c63492f7928bca6f00e4b4241
Reviewed-on: https://chromium-review.googlesource.com/446339
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43411}
Enable using BaseWithIndexAndDisplacement addressing mode for an address
used by multiple load/stores. It can reduce one instruction to calculate
the address and one register to store the address.
BUG=
Review-Url: https://codereview.chromium.org/2620293004
Cr-Commit-Position: refs/heads/master@{#43402}
The source code of those functions is simple a ternary operator, and
the test seems to have been designed as a "regression" test for the
previous implementation (which used a macro, and thus evaluated its
arguments multiple times).
I don't think the test is worth the weight of supporting importing
JS natives from tests.
This patch removes the last test that depends on JS natives.
R=littledan@chromium.org
Review-Url: https://codereview.chromium.org/2711833002
Cr-Commit-Position: refs/heads/master@{#43394}
Non-simple parameters are only disallowed when a function declares itself
strict, but they're otherwise ok in strict mode.
Enabling these tests will expose more problems when scope data for arrow
functions is tested (in a future CL).
BUG=v8:5516
R=vogelheim@chromium.org
Change-Id: I839ad37d46305975a56aff20e8ca70505c16bf1d
Reviewed-on: https://chromium-review.googlesource.com/446497
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43389}
With inline breakpoints DevTools are ready for break position aligned breakpoints instead of statement aligned.
BUG=chromium:695236
R=dgozman@chromium.org,yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2709263002
Cr-Commit-Position: refs/heads/master@{#43385}
This implements the proposal at
https://github.com/tc39/proposal-template-literal-revision
staged behind a flag --harmony-template-escapes. The proposal allows
invalid octal, unicode, and hexadecimal escape sequences to appear in
tagged template literals, instead of being a syntax error. These have
a 'cooked' value of 'undefined', but are still accessible through the
'raw' property.
BUG=v8:5546
Review-Url: https://codereview.chromium.org/2665513002
Cr-Commit-Position: refs/heads/master@{#43384}
This fixes a corner-case where the call reduction of the aforementioned
getter did not simulate the {ToObject} conversion of the receiver value
as required by the spec. This caused the wrong prototype to be constant
promoted (i.e. {null} instead of wrapper object prototype).
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-694709
BUG=chromium:694709
Change-Id: Idf3a37071949d9ddaf5ef43974570c06fd31c0c9
Reviewed-on: https://chromium-review.googlesource.com/445818
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43376}
This reverts commit 087e95ba63.
Reason for revert: <INSERT REASONING HERE>
Original change's description:
> [Compiler] Use IdentityMap to store jobs in CompilerDispatcher.
>
> Stores jobs in an IdentityMap keyed by their SharedFunctionInfo to enable
> fast checking of whether a job is enqueued.
>
> BUG=v8:5203
>
> Change-Id: I6c37972093515a27077f79594cad27e32e1a4e7c
> Reviewed-on: https://chromium-review.googlesource.com/444768
> Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#43370}
TBR=rmcilroy@chromium.org,jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203
Change-Id: I5d1101bdae6939378dad595b26698fe2aaaad35e
Reviewed-on: https://chromium-review.googlesource.com/446357
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43372}
Stores jobs in an IdentityMap keyed by their SharedFunctionInfo to enable
fast checking of whether a job is enqueued.
BUG=v8:5203
Change-Id: I6c37972093515a27077f79594cad27e32e1a4e7c
Reviewed-on: https://chromium-review.googlesource.com/444768
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43370}
With this CL the out-of-line code of TrapIf will call a builtin instead
of doing a direct runtime call, which is cheaper. In the best case, the
out-of-line code now consists of a single call instruction. The builtin
will load the trapID and then call the runtime to throw a trap.
R=titzer@chromium.org, clemensh@chromium.org
Change-Id: I8a75ba09f40236a3d5cbdc17c1317baf0a3c915a
Reviewed-on: https://chromium-review.googlesource.com/445937
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43366}
In order to use the IdentityMap in the CompilerDispatcher the following
support is added:
- Support for deleting entries
- Support for iterating through the entries.
- Support for AllocationPolicy to enable non-zone allocation of backing
stores.
- Also refactors the code a bit.
BUG=v8:5203
Change-Id: I8b616cba8ae9dc22a7f4d76070fbb318c4edc80d
Reviewed-on: https://chromium-review.googlesource.com/444409
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43362}
v8 allows the embedder to specify a global template to use when
creating a new context. However, v8 does not use the supplied
template directly when creating the global proxy: it creates a
unique template for each global proxy. However, this is problematic
for remote contexts: functions cannot use strict receiver checks
with the remote context, as the global template will never match
the global proxy.
To fix this, remote contexts now also include a remote global
object in the prototype chain that is instantiated with the global
template. This mirrors the way the global proxy is configured for a
full v8 context, and allows strict receiver checks to work.
BUG=527190
Review-Url: https://codereview.chromium.org/2677653002
Cr-Commit-Position: refs/heads/master@{#43361}
This is a speculative fix, but I believe it might work.
Idea is to keep `start_from` as a double while establishing an appropriate
index to begin iteration. This should keep -Infinity intact rather than
converting it to a positive high value, which would break the algorithm.
This is similar to what had been implemented on the fast path before it was
changed to send non-Smis to the slow path.
BUG=v8:5986
R=bmeurer@chromium.org, cbruni@chromium.org, machenbach@chromium.org, adamk@chromium.org
Change-Id: I9965fd2e75a8972f3f1c7a18e51bd580030a66ea
Reviewed-on: https://chromium-review.googlesource.com/445857
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43358}
Test the wasm interpreter entry stub by creating two wasm functions A
and B, make A pass arguments to B, then redirect B to be executed in the
interpreter.
Test different number and types or arguments.
BUG=v8:5822
R=titzer@chromium.org
Review-Url: https://codereview.chromium.org/2651793003
Cr-Commit-Position: refs/heads/master@{#43353}
Native resources allocated by v8, as internal implementation detail,
and held by a Foreign object, must be released when the Isolate is
torn down. Example: wasm::WasmModule allocated by wasm compile, and
held throughout the lifetime of the WebAssembly.Module object.
This change:
- Extends Managed<CppType> with a mechanism for doing just that
- Separates the role of Managed<CppType> to be strictly an owner of
the lifetime of the native resource. For cases where that's not
desirable, we can polymorphically use Foregin.
- moves managed.h out of wasm, since it's not wasm-specific.
BUG=680065
Review-Url: https://codereview.chromium.org/2676513008
Cr-Commit-Position: refs/heads/master@{#43350}
- Adds new machine types SimdBool4/8/16 for the different boolean vector types.
- Adds a kSimdMaskRegisters flag for each platform. These are all false for now.
- Removes Create, ExtractLane, ReplaceLane, Equal, NotEqual, Swizzle and Shuffle
opcodes from the Boolean types. These are unlikely to be well supported natively,
and can be synthesized using Select.
- Changes the signature of Relational opcodes to return boolean vectors.
- Changes the signature of Select opcodes to take boolean vectors.
- Updates the ARM implementation of Relational and Select opcodes.
LOG=N
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2700813002
Cr-Commit-Position: refs/heads/master@{#43348}
This fixes a missing name check for keyed property loads targeting the
global object where the feedback was warmed up with a single name. This
affects {JSLoadProperty} nodes only, syntactic global property loads via
the {JSLoadGlobal} operator are not affected.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-694416
BUG=chromium:694416
Change-Id: I54aa3f27eaa72630539f02602ec7642b04835b27
Reviewed-on: https://chromium-review.googlesource.com/445224
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43344}
Two controls, one for instantiation and one for compilation. They allow
the embedder (e.g. Chrome) check properties of the parameters of those
two operations, and decide if they are allowed to continue.
For example, Chrome may now decline compilation of certain size buffers,
in synchronous cases; same for instantiation (where the buffer size
refers to the size of the buffer containing wasm wire bytes)
BUG=v8:5981
Review-Url: https://codereview.chromium.org/2699843003
Cr-Original-Commit-Position: refs/heads/master@{#43295}
Committed: d9bc0ffb16
Review-Url: https://codereview.chromium.org/2699843003
Cr-Commit-Position: refs/heads/master@{#43336}
This patch refactors the Atomics builtins so that they are implemented
as C++ builtins rather than experimental JS builtins. Previously, each
of these functions called out to a runtime function, so no significant
change in performance is anticipated. The goal of this patch is to
remove the last user of experimental JS builtins so that the mechanism
can be removed, for performance reasons. The patch includes a drive-by
fix of a check-fail. For the most part, the patch is just moving code
without modification from runtime-atomics.cc to
builtins-sharedarraybuffer.cc .
BUG=v8:5880
Review-Url: https://codereview.chromium.org/2698813004
Cr-Commit-Position: refs/heads/master@{#43335}
qNaN and sNaN values have different binary representation on MIPS
compared to ARM/x86 architectures. We are skipping these tests because
we can't provide specific NaNs encodings from ARM/x86 architectures.
BUG=
Review-Url: https://codereview.chromium.org/2702213003
Cr-Commit-Position: refs/heads/master@{#43327}
Take runtime path if startIndex parameter requires a ToInteger() call,
which can modify the elements kind of the receiver.
This removes a stub call from the builtin, and simplifies code slightly.
BUG=v8:5986
R=bmeurer@chromium.org, cbruni@chromium.org
Change-Id: Id238a81ab8ba28621858004b34d00a4356b8037f
Reviewed-on: https://chromium-review.googlesource.com/445006
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#43323}
info.This returns a Local<Object>, which results in a call to
Utils::OpenHandle<JSReceiver>. Casting to a Local<Value> first uses the
correct OpenHandle<Object> overload.
BUG=chromium:693500
Review-Url: https://codereview.chromium.org/2706833002
Cr-Commit-Position: refs/heads/master@{#43314}
This makes it easier to implement asynchronous compilation by hiding all the implementation details of both synchronous and asynchronous compilation within wasm-module.cc, whereas before the code in wasm-js.cc actually implemented asynchronous compilation in terms of synchronous.
BUG=
Review-Url: https://codereview.chromium.org/2695813005
Cr-Commit-Position: refs/heads/master@{#43310}
Reason for revert:
Due to arm64 failures
Original issue's description:
> [interpreter] Create custom call opcodes for specific argument counts
>
> Specifically, add bytecodes for Call0, Call1, Call2, CallProperty0, CallProperty1,
> and CallProperty2. Also share the bytecode handler code between between
> equivalent CallX and CallPropertyX handlers.
>
> Review-Url: https://codereview.chromium.org/2684993002
> Cr-Commit-Position: refs/heads/master@{#43290}
> Committed: 00d6f1f80aTBR=rmcilroy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
Review-Url: https://codereview.chromium.org/2709533002
Cr-Commit-Position: refs/heads/master@{#43308}
The constant field tracking is still disabled.
BUG=v8:5495
Change-Id: I543fe50b82e2255bbf200ea785ec53e3623e30cb
Reviewed-on: https://chromium-review.googlesource.com/440924
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43304}
Reason for revert:
Introduces a new test failure/flake: https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/16427
Original issue's description:
> [wasm] Embedder can control what buffers wasm compilation works on.
>
> Two controls, one for instantiation and one for compilation. They allow
> the embedder (e.g. Chrome) check properties of the parameters of those
> two operations, and decide if they are allowed to continue.
>
> For example, Chrome may now decline compilation of certain size buffers,
> in synchronous cases; same for instantiation (where the buffer size
> refers to the size of the buffer containing wasm wire bytes)
>
> BUG=v8:5981
>
> Review-Url: https://codereview.chromium.org/2699843003
> Cr-Commit-Position: refs/heads/master@{#43295}
> Committed: d9bc0ffb16TBR=bradnelson@chromium.org,titzer@chromium.org,mtrofin@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5981
Review-Url: https://codereview.chromium.org/2701413002
Cr-Commit-Position: refs/heads/master@{#43303}
The bytecode generator did not necessarily know for which scope, and
thus language mode, it was generating code, because it only tracked
scopes that have a context. This led to wrong behavior in some
examples involving class expressions (which are always in strict
mode).
With this CL, the bytecode generator explicitly tracks the current
scope, independent of whether it has a context.
BUG=v8:5927
Change-Id: Ifa6b3ee5e13e07b63d00e74c7f557a328633c88b
Reviewed-on: https://chromium-review.googlesource.com/444785
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43300}
Currently, typeof o, where o is an undetectable
callable object (such as document.all), returns 'function' if
optimised. It should, however, return 'undefined'.
This CL excludes undetectable objects from the optimization
resulting in type 'function' and renames the related code to
reflect that.
BUG=v8:5972
R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/2697063002
Cr-Commit-Position: refs/heads/master@{#43298}
Two controls, one for instantiation and one for compilation. They allow
the embedder (e.g. Chrome) check properties of the parameters of those
two operations, and decide if they are allowed to continue.
For example, Chrome may now decline compilation of certain size buffers,
in synchronous cases; same for instantiation (where the buffer size
refers to the size of the buffer containing wasm wire bytes)
BUG=v8:5981
Review-Url: https://codereview.chromium.org/2699843003
Cr-Commit-Position: refs/heads/master@{#43295}
Adds five new TF builtins for the spec defined functions/closures. This follows
mechanism similar to promise resolving functions approach where we store the
closure variables in a custom context.
Adds a new --harmony-promise-finally flag.
BUG=v8:5967
Review-Url: https://codereview.chromium.org/2695753002
Cr-Commit-Position: refs/heads/master@{#43294}
Specifically, add bytecodes for Call0, Call1, Call2, CallProperty0, CallProperty1,
and CallProperty2. Also share the bytecode handler code between between
equivalent CallX and CallPropertyX handlers.
Review-Url: https://codereview.chromium.org/2684993002
Cr-Commit-Position: refs/heads/master@{#43290}
This is the beginning of a new fuzzer that generates
correct-by-construction Wasm modules. This should allow us to better
exercise the compiler and correctness aspects of fuzzing. It is based off
of ahaas' original Wasm fuzzer.
At the moment, it can generate expressions made up of most binops, and
also nested blocks with unconditional breaks. Future CLs will add
additional constructs, such as br_if, loops, memory access, etc.
The way the fuzzer works is that it starts with an array of arbitrary
data provided by libfuzzer. It uses the data to generate an expression.
Care is taken to make use of the entire string. Basically, the
generator has a bunch of grammar-like rules for how to construct an
expression of a given type. For example, an i32 can be made by adding
two other i32s, or by wrapping an i64. The process then continues
recursively until all the data is consumed.
We generate an expression from a slice of data as follows:
* If the slice is less than or equal to the size of the type (e.g. 4
bytes for i32), then it will emit the entire slice as a constant.
* Otherwise, it will consume the first 4 bytes of the slice and use
this to select which rule to apply. Each rule then consumes the
remainder of the slice in an appropriate way. For example:
* Unary ops use the remainder of the slice to generate the argument.
* Binary ops consume another four bytes and mod this with the length
of the remaining slice to split the slice into two parts. Each of
these subslices are then used to generate one of the arguments to
the binop.
* Blocks are basically like a unary op, but a stack of block types is
maintained to facilitate branches. For blocks that end in a break,
the first four bytes of a slice are used to select the break depth
and the stack determines what type of expression to generate.
The goal is that once this generator is complete, it will provide a one
to one mapping between binary strings and valid Wasm modules.
Review-Url: https://codereview.chromium.org/2658723006
Cr-Commit-Position: refs/heads/master@{#43289}
... which is used for initializing properties with non compile time values.
Currently we use StoreOwnIC only for storing properties that already exist
in the boilerplate therefore we can reuse StoreIC dispatcher.
The proper StoreOwnIC dispatcher will be implemented in a separate CL.
BUG=v8:5495, v8:4414
Change-Id: I9c33fdb8499ec5be2c7fce1ecb6ce7aa285e5844
Reviewed-on: https://chromium-review.googlesource.com/443588
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43285}
The functions do not work correctly with concurrent sweeper and they
do not take weak references into account.
The latter is a fundamental problem for this tracing approach.
BUG=
Review-Url: https://codereview.chromium.org/2707433002
Cr-Commit-Position: refs/heads/master@{#43284}
Add `ValueSerializer::SetTreatArrayBufferViewsAsHostObjects()` which
instructs the `ValueSerializer` to treat ArrayBufferView objects as
host objects.
BUG=v8:5926
Review-Url: https://codereview.chromium.org/2696133007
Cr-Commit-Position: refs/heads/master@{#43281}
https://codereview.chromium.org/2694003002/ introduced
"SyntaxError: Lexical declaration cannot appear in a single-statement context"
for the case when let + desctructuring from a list happen.
As was pointed out in https://codereview.chromium.org/2694003002/#msg18, the
case without destructuring would also benefit from a better message: if a
single statement is expected and "let identifier = ..." is seen, the error is
indeed again that the lexical declaration is not a statement. However, the current
error is "Unexpected identifier", because the parser tries to accept "let" as
an identifier in an expression statement, and then gives up seeing the other
identifier after "let".
This CL ensures that the parser recognises the error properly and reports
accordingly. It also renames the existing test, which contains destructuring,
and adds the one with a non-destructuring lexical declaration.
BUG=v8:5686
Review-Url: https://codereview.chromium.org/2697193007
Cr-Commit-Position: refs/heads/master@{#43275}
https://crrev.com/2500363002 updated FunctionTemplate::HasInstance to
follow the hidden prototype chain of a global proxy to the global
object. However, remote contexts don't have a global object to check;
instead, teach the instance check knows about the conventions of
global proxy setup and have it also check the constructor's prototype.
Similarly, also teach Object::FindInstanceInPrototypeChain about the
unusual conventions for remote contexts.
BUG=527190
Review-Url: https://codereview.chromium.org/2698683003
Cr-Commit-Position: refs/heads/master@{#43263}
For functions declared in source code, the .toString() representation
will be an excerpt of the source code.
* For functions declared with the "function" keyword, the excerpt
starts at the "function" or "async" keyword and ends at the final "}".
The previous behavior would start the excerpt at the "(" of the
parameter list, and prepend a canonical `"function " + name` or
similar, which would discard comments and formatting surrounding the
function's name. Anonymous functions declared as function expressions
no longer get the name "anonymous" in their toString representation.
* For methods, the excerpt starts at the "get", "set", "*" (for
generator methods), or property name, whichever comes first.
Previously, the toString representation for methods would use a
canonical prefix before the "(" of the parameter list. Note that any
"static" keyword is omitted.
* For arrow functions and class declarations, the excerpt is unchanged.
For functions created with the Function, GeneratorFunction, or
AsyncFunction constructors:
* The string separating the parameter text and body text is now
"\n) {\n", where previously it was "\n/*``*/) {\n" or ") {\n".
* At one point, newline normalization was required by the spec here,
but that was removed from the spec, and so this CL does not do it.
Included in this CL is a fix for CreateDynamicFunction parsing. ')'
and '`' characters in the parameter string are no longer disallowed,
and Function("a=function(", "}){") is no longer allowed.
BUG=v8:4958, v8:4230
Review-Url: https://codereview.chromium.org/2156303002
Cr-Commit-Position: refs/heads/master@{#43262}
Before this patch, the registers needed for bytecode dispatch in interpreter
handlers were inconsistently stored in the interpreter frame and/or kept in
values that remained live across calls.
After this patch, these registers are explicitly reloaded after calls, making it
possible to elide the spills of those registers before the call in many cases.
Some highlights from the CL:
* Added methods to the CSA and InterpreterAssembler to efficiently store and
load Smis values and Smi interpreter registers on x64 without explicit
tagging/untagging.
* Created Variables for all of the interpreter-internal values that need to be
reloaded before bytecode dispatch at the end of an interpreter handler.
* The bytecode offset can be written out early in a handler by marking it
has having a call along it's critical path. By moving this early in a
handler, it becomes possible to use memory operands for pushes used to
marshall parameters when making calls.
Change-Id: Icf8d7798789f88a4489e06a7092616bbbb881577
Reviewed-on: https://chromium-review.googlesource.com/442566
Commit-Queue: Daniel Clifford <danno@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43260}
ES2017 forbids the sequence of tokens "let [" in in expression statements [1].
This CL makes ParserBase report those instances as SyntaxError. It also adds a
customised error message for that, because the standard "Unexpected token" is
not applicable: "let" itself is not forbidden in those context, only the
sequence of "let [".
[1] https://tc39.github.io/ecma262/#sec-expression-statement
BUG=v8:5686
Review-Url: https://codereview.chromium.org/2694003002
Cr-Commit-Position: refs/heads/master@{#43258}
We were looking at the unreachable flag or stack_depth of the target frame
instead of the current one in a couple of places (most notably BreakTo).
This change fixes these bugs and makes us pass the latest spec tests for
br_table validation. Also need to ensure that br_table targets have consistent
types, which is not implied if the stack is polymorphic.
R=titzer@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2696813002
Cr-Commit-Position: refs/heads/master@{#43250}
The serializer won't ever write a more complex object. Not validating this
allows other things to be used as keys, and converted to string when the
property set actually occurs. It turns out this gives an opportunity to trigger
OOM by giving an object a key which is a very large sparse array (whose string
representation is very large).
This case is now rejected by the deserializer.
BUG=chromium:686511
Review-Url: https://codereview.chromium.org/2697023002
Cr-Commit-Position: refs/heads/master@{#43249}
One optimization in the machine-operator-reducer did not consider that
that word32 shift left instructions only consider the last 5 bits of
the shift input.
The issue only occurs for WebAssembly because in JavaScript we always
add a "& 0xf" on the shift value to the TurboFan graph.
For additional background: The JavaScript and WebAssembly spec both
say that only the last 5 bits of the shift value are used in the
word32-shift-left operation. This means that an "x << 0x29", in the
code is actually executed as "x << 0x09". Therefore the changes in
this CL are okay because they mask the last 5 bit of the shift value.
BUG=chromium:689450
Change-Id: Id92f298ed6d7f1714b109b3f4fbcecd5ac6d30f7
Reviewed-on: https://chromium-review.googlesource.com/439312
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43245}
Map OOM breaks generated by inspector to DebugEvent.OOM.
This avoids generating unintentional DebugEvent.Break events.
Also be more future-proof in event categorization.
On a related note, this CL also fixes a DCHECK in
Runtime::GetFrameDetails.
The receiver needs to be grabbed from the inlined frame, not
the outer optimized frame. Optimized frames only provide the
receiver on a best-effort basis.
BUG=v8:5950
Review-Url: https://codereview.chromium.org/2696173002
Cr-Commit-Position: refs/heads/master@{#43244}
Reason for revert:
Please remove the file in status file too. Breaks presubmit:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20presubmit/builds/14754
Or lets call it post-submit :(
Original issue's description:
> This is a workaround for the fact that %SetCode can "lose" the script for a js native. If the js native is re-initialized (for a Realm or something), then the source SharedFunctionInfo won't have a script anymore. Nonetheless, we may want to optimize the function. If we've compiled bytecode, then we can compile optimized code without a script.
>
> Here, we carve out a special exception for this case, so that we can turn on the --mark-shared-functions-for-tier-up.
>
> BUG=v8:5946
> R=leszeks@chromium.org
>
> Review-Url: https://codereview.chromium.org/2684033007
> Cr-Commit-Position: refs/heads/master@{#43240}
> Committed: 4123a3dd79TBR=leszeks@chromium.org,mstarzinger@chromium.org,marja@chromium.org,mvstanton@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5946
Review-Url: https://codereview.chromium.org/2703553002
Cr-Commit-Position: refs/heads/master@{#43242}
Produce the same scopes / variables for parameters (part 3).
This CL fixes the ordering + variable types in PreParser when there are
simple parameters + a rest parameter. In that case, Parser declares
unnamed temporaries for the non-rest params, then the rest param, then
the named variables (which are not parameters) for the non-rest params.
BUG=v8:5516
R=vogelheim@chromium.org
Change-Id: I9b006595039c8002b0508d1d2a200aa9a0f3eae0
Reviewed-on: https://chromium-review.googlesource.com/443527
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43241}
ES2016 changed the default timezone of dates to be conditional on
whether a time is included. The semantics were a compromise approach
based on web compatibility feedback from V8, but until now, we have been
shipping ES5.1 default timezone semantics. This patch implements the
new semantics, following ChakraCore and SpiderMonkey (though JSC
implements V8's previous semantics).
BUG=chromium:589858
Review-Url: https://codereview.chromium.org/2648603002
Cr-Commit-Position: refs/heads/master@{#43239}
This handles arithmetic addition operations during the early type-hint
lowering (i.e. during graph construction). The string addition case is
still handled by {JSTypedLowering} as it needs static type information.
R=bmeurer@chromium.org
Change-Id: I9df47dfc5bf7613c51f6d803ab43d5d3f6c21be8
Reviewed-on: https://chromium-review.googlesource.com/443185
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43235}
@@replace has a pretty complex implementation, taking different paths
for various situations (e.g.: global/nonglobal regexp, functional/string
replace argument, etc.). Each of these paths must implement similar
logic for calling into the RegExpBuiltinExec spec operation, and many
paths get this subtly wrong.
This CL fixes a couple of issues related to the way @@replace handles lastIndex:
* All paths now respect lastIndex when calling into exec (some used to assume 0).
* lastIndex is now advanced after a successful match for sticky regexps.
* lastIndex is now only reset to 0 on failure for sticky regexps.
BUG=v8:5361
Review-Url: https://codereview.chromium.org/2685183003
Cr-Commit-Position: refs/heads/master@{#43234}
When --harmony-async-iteration is enabled, it is now possible to
use the for-await-of loop, which uses the Async Iteration protocol
rather than the ordinary ES6 Iteration protocol.
the Async-from-Sync Iterator object is not implemented in this CL,
and so for-await-of loops will abort execution if the iterated object
does not have a Symbol.asyncIterator() method. Async-from-Sync
Iterators are implemented seperately in https://codereview.chromium.org/2645313003/
BUG=v8:5855, v8:4483
R=neis@chromium.org, littledan@chromium.org, adamk@chromium.org
Review-Url: https://codereview.chromium.org/2637403008
Cr-Commit-Position: refs/heads/master@{#43224}
The mips64 implementation always ended up in the slowpath due to some
loads that were the wrong width, so that is also fixed here.
BUG=v8:5974
Change-Id: Ie448a1fab5b7fca87597c5a1bf75443864e30c28
Reviewed-on: https://chromium-review.googlesource.com/443247
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43222}
This handles all arithmetic binary operations except addition during the
early type-hint lowering (i.e. during graph construction). We still use
static type information to potentially further reduce the speculative
operations down to pure operations during the typed lowering phase.
R=bmeurer@chromium.org
Change-Id: I8b93fd7c46ec8e5b81234a49624d503520c3d082
Reviewed-on: https://chromium-review.googlesource.com/443105
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43218}
- Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
- Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
relies on std::memmove rather than accessing individual eleements.
- Fixes the case where copyWithin is invoked on a TypedArray with a
detached buffer.
- Add tests to ensure that +/-Infinity (for all 3 parameters) is handled
correctly by the
algorithm
The C++ version gets through the benchmark more than 25000 times as
quickly as the JS implementation.
BUG=v8:5925, v8:5929, v8:4648
R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
Review-Url: https://codereview.chromium.org/2697593002
Cr-Commit-Position: refs/heads/master@{#43213}
... and don't clear ICs during GC. The IC clearing used to prevent memory
leaks but it's not necessary anymore because all the handlers that need
to embed objects already use weak cells.
This CL unblocks inlining of IC dispatchers into bytecode handlers.
BUG=v8:5917
Change-Id: I229b9ba8dba44f431dfbe8ac5370d855e3e84dd6
Reviewed-on: https://chromium-review.googlesource.com/442127
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43209}
This allows part of typed lowering that is solely based on type-hints to
run as part of the graph construction. The lowering in question does not
inspect types and hence doesn't require the typer to have run before. We
insert the speculative simplied-level operations in favor of the generic
JavaScript-level variants.
R=bmeurer@chromium.org
Change-Id: I5f0549fc1e4ff607622ee9059e6232a32f77db2e
Reviewed-on: https://chromium-review.googlesource.com/442584
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43208}
ParserBase::is_any_identifier currently does not recognise
Token::ESCAPED_STRICT_RESERVED_WORD as an identifier. This seems different
from what ParserBase::ParseIdentifierName does, and also prevents
"l\u0065t", unlike "let", from becoming a label.
This CL extends is_any_identifier to also accept ESCAPED_STRICT_RESERVED_WORD.
BUG=v8:5692
Review-Url: https://codereview.chromium.org/2695973003
Cr-Commit-Position: refs/heads/master@{#43204}
CreateNumberFormat of src/js/i18n.js implements
http://www.ecma-international.org/ecma-402/1.0/#sec-11.1.1.1, but has a typo
in step 33a. The spec says that the default value for minimumSignificantDigits
should be 1, while the script set it to 0.
This CL fixes that typo and adds a test for that.
BUG=v8:5554
Review-Url: https://codereview.chromium.org/2694673003
Cr-Commit-Position: refs/heads/master@{#43197}
After https://github.com/tc39/ecma262/pull/642, Date.UTC no longer requires
the month argument to be specified. The spec provides 0 as its default value.
This CL updates the builtins-date.cc code to reflect that and drops the test
suppression for test262/built-ins/Date/UTC/return-value.
BUG=v8:5534
Review-Url: https://codereview.chromium.org/2689173003
Cr-Commit-Position: refs/heads/master@{#43193}
BUG=
Change-Id: I4a5db9bc045a63e710d0115523ab23b98e7c7ae6
Reviewed-on: https://chromium-review.googlesource.com/442504
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43189}
If the Reflect.construct receives an argument expected to be a constructor,
and the argument is not a constructor, V8 currently declares that
Reflect.construct is not a function. It should instead say that the offending
argument is not a constructor.
This is the case for all ports of builtins
(Builtins::Generate_ReflectConstruct). All of them make an
attempt to at least pass the right argument to the TypeError parametrised
message, calling out the offending Reflect.construct argument. However,
Runtime::kThrowCalledNonCallable extracts the callsite from those arguments,
discarding the precise information.
This CL adds Runtime::kNotConstructor, which reports the arguments passed
to it, and the CL also modifies the ports of builtins to make use of
Runtime::kNotConstructor
BUG=v8:5671
Review-Url: https://codereview.chromium.org/2688393003
Cr-Commit-Position: refs/heads/master@{#43182}
I identified lots of asm.js tests that are actually not valid according
to the spec, hence they execute in default-javascript-mode.
This CL fixes most of them by adding additional type annotations.
The atomic tests are totally non-spec-compliant by expecting a fourth
argument, and infinite-loops-taken expects a function-type parameter,
so I did not fix those.
I also did not fix the regression tests.
R=titzer@chromium.org, bradnelson@chromium.org
BUG=v8:4203
Review-Url: https://codereview.chromium.org/2663243002
Cr-Commit-Position: refs/heads/master@{#43179}
- Renames select, swizzle, and shuffle to be consistent with the S128 and
existing S32x4 ops, and reflect that these aren't arithmetic.
e.g. I16x8Swizzle -> S16x8Swizzle.
- Implements S16x8 and S8x16 Select operations and tests.
- Implements S128And, Or, Xor, Not operations and tests.
- Implements Swizzle for 32x4 formats.
- Refactors test macros that generate SIMD code.
TEST=cctest/test-run-wasm-simd/*
LOG=N
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2683713003
Cr-Commit-Position: refs/heads/master@{#43168}
Test both cases where the interesting constructs occur at the
laziness boundary and cases where they occur deeper.
BUG=v8:5501
R=vogelheim@chromium.org
Change-Id: I99e32cb0c829616011bf7d1f389a8d309b54d67e
Reviewed-on: https://chromium-review.googlesource.com/441844
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43157}
The constructor for TypedArray in js/typedarray.js emitted
kInvalidTypedArrayAlignment if the array offset exceeded the size of the
underlying buffer. This seems like a typo introduced in
https://codereview.chromium.org/2090353003.
The error message to be emitted instead coincides with the already existing
kInvalidDataViewOffset. The message string is independent of whether the
object in question is a DataView or a typed array, so this CL:
(1) renames kInvalidDataViewOffset to just kInvalidOffset, and
(2) uses kInvalidOffset instead of kInvalidTypedArrayAlignment for cases
when the TypedArray is constructed with an offset exceeding the buffer
size.
BUG=v8:5733
TEST=Run d8, execute "new Uint8Array(new ArrayBuffer(1),2)", see the error message mention the invalid offset 2.
Review-Url: https://codereview.chromium.org/2692753002
Cr-Commit-Position: refs/heads/master@{#43151}
This CL fixes some nits in TypeError messages, unifying the form of
kDefineDisallowed and kObjectNotExtensible to match what is used by the
majority of the other messages:
* "Cannot" vs. "Can't" -> choose "Cannot"
* "property:%" -> "property %"
* omit the full-stop at the end of the message
BUG=v8:5673
Review-Url: https://codereview.chromium.org/2686233008
Cr-Commit-Position: refs/heads/master@{#43150}
This adds support for deoptimizing into the JSConstructStub after the
receiver instantiation but before the actual constructor invocation.
Such a deoptimization point is needed for cases where instantiation
might be observed (e.g. when new.target is a proxy) and hence might
trigger a deopt.
We use this new deoptimization point for the "after" frame-state the
inliner attaches to {JSCreate} nodes being inserted when constructor
calls are being inlined.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-5638b
BUG=v8:5638
Change-Id: I7c72c807ee8fb76d12e0e9ccab86d970ab1a0efd
Reviewed-on: https://chromium-review.googlesource.com/440125
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43149}
We cannot skip the @@hasInstance lookup in instanceof depending on a
global protector cell, as the lookup of the property is observable
via proxies or accessors. So remove the global protector and properly
implement CSA::InstanceOf via GetPropertyStub, with an appropriate
fast-path for Function.prototype[@@hasInstance] where we call the
builtin code object directly if the function matches, skipping all
the checks from the call sequence, and also avoid the redundant
ToBoolean conversion on the result.
R=yangguo@chromium.orgTBR=ulan@chromium.org
BUG=v8:5958
Review-Url: https://codereview.chromium.org/2684033012
Cr-Commit-Position: refs/heads/master@{#43137}
Reason for revert:
Due to security issue described in review thread.
Original issue's description:
> [typedarrays] move %TypedArray%.prototype.copyWithin to C++
>
> - Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
> - Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
> relies on std::memmove rather than accessing individual eleements.
> - Fixes the case where copyWithin is invoked on a TypedArray with a
> detached buffer.
> - Add tests to ensure that +/-Infinity (for all 3 parameters) is handled correctly by the
> algorithm
>
> The C++ version gets through the benchmark more than 25000 times as
> quickly as the JS implementation.
>
> BUG=v8:5925, v8:5929, v8:4648
> R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
>
> Review-Url: https://codereview.chromium.org/2671233002
> Cr-Commit-Position: refs/heads/master@{#42975}
> Committed: 0f1c626d55TBR=cbruni@chromium.org,adamk@chromium.org,bmeurer@chromium.org,cwhan.tunz@gmail.com,caitp@igalia.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5925, v8:5929, v8:4648
Review-Url: https://codereview.chromium.org/2693753002
Cr-Commit-Position: refs/heads/master@{#43132}
Do not allow that holey properties are defined in Array sort.
Throw a type error if the array is not extensible and there are holey
properties in the middle of the array.
BUG=v8:4888
Review-Url: https://codereview.chromium.org/2664173002
Cr-Commit-Position: refs/heads/master@{#43126}
If a job was already enqueued, EnqueueAndStep would still step the job one
more step. However, since it didn't take the job out of the
pending_background_jobs pool, the job could get picked up by a background
thread which would try to step it, but it the job is now at a step which
can't be run on the background.
BUG=v8:5203,chromium:685515
Change-Id: I2cee2a33625ba455aca49a8037601be9ff8bb73f
Reviewed-on: https://chromium-review.googlesource.com/441084
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43121}
The heuristic checks for "(function", and now it also checks for
"(async function".
BUG=v8:4230
Review-Url: https://codereview.chromium.org/2682173005
Cr-Commit-Position: refs/heads/master@{#43120}
This roll includes the SharedArrayBuffer tests (skipping for now)
but doesn't include the $ renaming.
This is a reland; previously, I reverted because I was confused about why
the rename of $ to $262 didn't break tests; it now seems that the
previous patch left it as an alias. This patch does not do the renaming
yet, as the renaming usage has not landed upstream yet.
R=adamk
Review-Url: https://codereview.chromium.org/2685603003
Cr-Commit-Position: refs/heads/master@{#43118}
Don't block on inner function compilation before competing outer function
compilation. Instead wait for the compilation to complete when the function
is called.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2686673002
Cr-Commit-Position: refs/heads/master@{#43116}
Removes handles from bytecode generation, instead storing
un-internalized AstValues (and other, similar values such as Scopes and
AstRawStrings) in the constant array builder.
This will allow us in the future to generate the bytecode before
internalizing the AST.
BUG=v8:5832
Change-Id: I3b8be8f7329a484eb1e5d12808b001d3475239da
Reviewed-on: https://chromium-review.googlesource.com/439326
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43115}
When running main-thread compiler-dispatcher jobs, ensure that we enter the
correct Context. Also adds a test for compiling an extension in the compiler
dispatcher to ensure that idle tasks enter the correct context before
finalizing the compilation.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2679193004
Cr-Commit-Position: refs/heads/master@{#43111}
This introduces new maps to track whether we have created at most one
closure. If we have created just one closure, Turbofan will
specialize the code to its context.
Review-Url: https://codereview.chromium.org/2680313002
Cr-Commit-Position: refs/heads/master@{#43108}
In order to compile eager inner functions on a background thread we need to
keep the handles created during parsing and scope analysis alive until the
background compilation is complete. In order to do that, we allocate the
handles in a deferred handle scope and keep the deferred handles alive with
a shared_ptr in the ParseInfo and CompileInfo respectively.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2650883002
Cr-Commit-Position: refs/heads/master@{#43107}
Reason for revert:
Reverting due to causing Word64AndWithImmediateWithWord64Sh to fail locally (but not on the bot).
BUG=v8:5956
Original issue's description:
> [arm64] A shift of 0 is not allowed in ubfx.
>
> R=bmeurer@chromium.org, v8-arm-ports@googlegroups.com
> BUG=v8:5951
>
> Review-Url: https://codereview.chromium.org/2685943003
> Cr-Commit-Position: refs/heads/master@{#43090}
> Committed: c46ccef921TBR=bmeurer@chromium.org,v8-arm-ports@googlegroups.com,martyn.capewell@arm.com,ahaas@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5951
Review-Url: https://codereview.chromium.org/2687373002
Cr-Commit-Position: refs/heads/master@{#43105}
Alternative approach to https://codereview.chromium.org/2667983004/, which
does not depend on implicit control flow changes from
https://codereview.chromium.org/2664083002
- Remove handling for `async function` from Parser::RewriteReturn(). This functionality
is moved to BytecodeGenerator::BuildAsyncReturn(). This ensures that promise resolution
is deferred until all finally blocks are evaluated fully.
- Add a new deferred command (CMD_ASYNC_RETURN), which instructs ControlScope to
generate return code using BuildAsyncReturn rather than BuildReturn.
- Parser has a new `NewReturnStatement()` helper which determines what type of return
statement to generate based on the type of function.
BUG=v8:5896, v8:4483
R=littledan@chromium.org, neis@chromium.org, rmcilroy@chromium.org, adamk@chromium.org, gsathya@chromium.org
Review-Url: https://codereview.chromium.org/2685683002
Cr-Commit-Position: refs/heads/master@{#43104}
This fixes the case where the index passed to {HMaybeGrowElements} used
to derive the new capacity for the elements backing store does not fit
into Smi range. Such an overflow would fail the capacity check and cause
growing to be skipped. Subsequent keyed stores would potentially go out
of bounds.
R=mvstanton@chromium.org
TEST=mjsunit/regress/regress-crbug-686427
BUG=chromium:686427
Review-Url: https://codereview.chromium.org/2686263002
Cr-Commit-Position: refs/heads/master@{#43101}
Also make them use the helpers that I introduced recently.
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2684343004
Cr-Commit-Position: refs/heads/master@{#43100}
Move the logic into Scope::DeclareVariable to be more robust.
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2685293003
Cr-Commit-Position: refs/heads/master@{#43098}
The use of setjmp/longjmp makes the cctests in test-run-wasm and
test-run-wasm-64 flaky on Windows, and I think that it is better not
to use it. With this CL I replace it as follows:
Similar to the setjmp/longjmp implementation we still call a C
function when a trap happens. However, instead of calling longjmp in
this C function we just set a flag which indicates that a trap
happened and then return. After we return from the C function we leave
the frame of the current wasm function and return with a RET
instruction. At the end of a test the wasm test runner checks the flag
to see if a trap happened.
Please take a special look at the LeaveFrame function on arm64.
R=titzer@chromium.org, clemensh@chromium.org, v8-arm-ports@googlegroups.comCC=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2685583003
Cr-Commit-Position: refs/heads/master@{#43095}
Reason for revert:
Issue on arm64:
https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20arm64%20-%20sim/builds/5752
Original issue's description:
> [Compiler] Enable handles created during parsing and scope analysis to be deferred.
>
> In order to compile eager inner functions on a background thread we need to
> keep the handles created during parsing and scope analysis alive until the
> background compilation is complete. In order to do that, we allocate the
> handles in a deferred handle scope and keep the deferred handles alive with
> a shared_ptr in the ParseInfo and CompileInfo respectively.
>
> BUG=v8:5203
>
> Review-Url: https://codereview.chromium.org/2650883002
> Cr-Commit-Position: refs/heads/master@{#43091}
> Committed: 9346cd9b4cTBR=marja@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2687973003
Cr-Commit-Position: refs/heads/master@{#43093}
In order to compile eager inner functions on a background thread we need to
keep the handles created during parsing and scope analysis alive until the
background compilation is complete. In order to do that, we allocate the
handles in a deferred handle scope and keep the deferred handles alive with
a shared_ptr in the ParseInfo and CompileInfo respectively.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2650883002
Cr-Commit-Position: refs/heads/master@{#43091}
In order to allow parallel compilation of eager inner functions, we need to
seperate the zone used for parsing (which will be shared between all the
parallel compile jobs) and the zone used for compilation. This CL changes
CompilationInfo to require a zone (which can be different from the zone in
ParseInfo). We then seal the ParseInfo zone after parsing and analysis is done
to prevent any further allocation in that zone, so that it can be shared
(read-only) with the parallel compile jobs.
BUG=v8:5203
Review-Url: https://codereview.chromium.org/2645403002
Cr-Commit-Position: refs/heads/master@{#43089}
Add a simple benchmark for a TypedArray constructor. Run once with the
default pipeline and once with turbofan so that we can compare the
performance.
Also fixes a typo in the Regex for the result of the CopyWithin
benchmark which stopped the results showing up in the perf
dashboard.
BUG=
Change-Id: Ic2eb0bd1e02b458c1163e97130abd0e7531c2e1c
Reviewed-on: https://chromium-review.googlesource.com/440225
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43087}
This CL covers only the very simple cases.
BUG=v8:5516
R=vogelheim@chromium.org
Change-Id: Ib6ddc90cbcf1c923a7b72493cfd029cfa835462b
Reviewed-on: https://chromium-review.googlesource.com/440246
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43086}
Collecting precise invocation counts need to be explicitly
enabled. Once enabled, we disable optimization (optimized
code does not increment invocation count, and may inline
callees), and make sure feedback vectors interesting for
code coverage is not garbage-collected.
R=hpayer@chromium.org, jgruber@chromium.org
BUG=v8:5808
Review-Url: https://codereview.chromium.org/2686063002
Cr-Commit-Position: refs/heads/master@{#43082}
This CL includes runtime and IC parts of the tracking. It is controlled by
compile-time flag FLAG_constant_field_tracking and currently disabled.
Transition from kConst to kMutable still involves map deprecation.
BUG=v8:5495
Review-Url: https://codereview.chromium.org/2598543003
Cr-Commit-Position: refs/heads/master@{#43081}
Collect code coverage from the available invocation counts.
The granularity is at function level, and invocation counts may
be lost to GC.
Coverage::Collect returns a std::vector of Coverage::ScriptData.
Each ScriptData contains a script ID and a std::vector of
Coverage::RangeEntry.
Each RangeEntry consists of a end position and the invocation
count. The start position is implicit from the end position of
the previous RangeEntry, or 0 if it's the first RangeEntry.
R=jgruber@chromium.org
BUG=v8:5808
Review-Url: https://codereview.chromium.org/2689493002
Cr-Commit-Position: refs/heads/master@{#43072}
arguments.h is one of the headers including objects-inl.h. Files needing
objects-inl.h used to innocently pull in debug.h, so that needs to be fixed now
too.
BUG=v8:5294
R=mstarzinger@chromium.org
Change-Id: I8ce671c533ed757103ef9a3b0bf0a0509230fdd8
Reviewed-on: https://chromium-review.googlesource.com/439287
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43054}
Since the empty string is canonical HeapObject now, we can use
this fact to optimize
- strict equality comparisons with the empty string to a
simple ReferenceEqual operation, and
- optimize ToBoolean to avoid instance type checks completely.
Drive-by-fix: Allow InternalizedString for Type::HeapConstant
in the type system. This is safe, since InternalizedStrings
can be compared to other heap constants by reference (except
for non-InternalizedStrings, which are excluded from the
HeapConstant type).
BUG=v8:5267
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2681273002
Cr-Commit-Position: refs/heads/master@{#43050}
E.g.,
{ function lazy_inner(b = somevar) { let somevar; } }
If we don't produce the same scopes, PreParser thinks that the unresolved
variable inside the default parameter resolves into the variable declared inside
the function. Thus, it's not correctly recorded as a free variable.
One part is already done by https://codereview.chromium.org/2638333002 . But at
the laziness boundary, we still produced different scopes.
Unlike previously thought, this is also needed for lazy inner function
correctness, not only for "preparser scope analysis" (ie., skipping inner
functions).
BUG=v8:5938
Change-Id: I047cd43ef16478bb0f18d1f114845e7d1ab8c5f2
Reviewed-on: https://chromium-review.googlesource.com/439345
Commit-Queue: Marja Hölttä <marja@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43044}
Without doing this, a JSMessageObject can be kept alive by the isolate, which
in turn keeps the context alive, until the message is cleared.
BUG=v8:5941
Review-Url: https://codereview.chromium.org/2675203005
Cr-Commit-Position: refs/heads/master@{#43043}
Where the arguments have already been inlined, we can replace these
calls with a direct call. We have to make sure that the iteration over
the arguments is not observable.
Also factor out the large chunk of logic shared with
ReduceJSConstructWithSpread.
BUG=v8:5932
Change-Id: I6c4fac670028fbd8ca82c4474d4392231573bc49
Reviewed-on: https://chromium-review.googlesource.com/439329
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43039}
It used to require >1GB of memory which leads to flaky test failures on
machines with less memory when executing multiple variants in parallel
R=cbruni@chromium.org,ulan@chromium.org
BUG=v8:5706
Change-Id: Id8c6f49cbfa51f2d443991c1493f225810efb18f
Reviewed-on: https://chromium-review.googlesource.com/439310
Commit-Queue: Camillo Bruni <cbruni@google.com>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43038}
Arm64 compiles "x +_64 (y >> shift)" into a single instruction if
"shift" is a constant. The code generator expects that "shift" is a
32 bit constant. however, TurboFan can also pass in a 64 bit constant,
which caused a crash in the code generator.
With this CL we cast the constant of TurboFan to an int in the
instruction selector and thereby satisfy the assumption of the code
generator. This should be correct since the code generator anyways cast
the "shift" to an int5 or int6 eventually.
R=v8-arm-ports@googlegroups.com
BUG=v8:5923
Review-Url: https://codereview.chromium.org/2669203005
Cr-Commit-Position: refs/heads/master@{#43036}
Do not preinitialize the feedback vector slot if
the lookup iterator is an interceptor, because it is not
guaranteed that the iterator has a PropertyCell.
If the HandlerConfiguration has a non-masking
intercepting setter,
the iterator does not have a valid PropertyCell.
BUG=chromium:656648
Review-Url: https://codereview.chromium.org/2674103002
Cr-Commit-Position: refs/heads/master@{#43034}
The testb instruction requires the REX prefix when either of its
operands uses a register with the high bit set. The existing code only
considered the register operand. In the test case the REX prefix was not
emitted because the testb instruction had the register operand RAX which
does not have the high bit set. The REX prefix was necessary though
because the memory operand used R8, which has the high bit set.
R=bmeurer@chromium.org
BUG=chromium:688876
Change-Id: Ib214bebbe75965664f2aea530e29afa95a54f44f
Reviewed-on: https://chromium-review.googlesource.com/439145
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43030}
Previously, both type feedback vector and the shared function info
of a function points to the matching type feedback metadata. This
makes finding the shared function info of a type feedback vector
difficult.
Instead, we now point the type feeback vector to the shared function
info, and find the metadata through the shared function info.
Also remove the obsolete empty type feedback vector.
R=hpayer@chromium.org, mvstanton@chromium.org
BUG=v8:5808
Review-Url: https://codereview.chromium.org/2672363002
Cr-Commit-Position: refs/heads/master@{#43026}
The AstGraphBuilder is used for asm.js only and for-in is not allowed in
valid asm.js, so we can just disable optimization for asm.js functions
that contain for-in loops. This way we only need to support for-in via
the BytecodeGraphBuilder in TurboFan now, which will make optimizations
way easier.
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2679913004
Cr-Commit-Position: refs/heads/master@{#43024}
In current implementation we don't support nested scheduled break at all. If one break was scheduled inside another and second one doesn't produce actual break (execution was in blackboxed code or no JavaScript was executed) then second one will clear first scheduled break even if any not blackboxed JavaScript will be executed later.
Ambiguous break reason is added for the case when we have more then one scheduled reason. "auxData" in this case contains object with array of { reason: reason, auxData: auxData } objects for each reason in 'reasons' property.
BUG=chromium:632405
Review-Url: https://codereview.chromium.org/2678313002
Cr-Commit-Position: refs/heads/master@{#43021}
Reason for revert:
Oops, looks like the patch to change the name of $ to $262 isn't merged yet. Not sure why this didn't cause a bunch of failures--need to investigate. Reverting for now.
Original issue's description:
> test262 roll
>
> This patch changes tests right up until the SharedArrayBuffer
> tests.
>
> R=adamk
>
> Review-Url: https://codereview.chromium.org/2681833003
> Cr-Commit-Position: refs/heads/master@{#43019}
> Committed: 9588a0de5aTBR=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/2683753003
Cr-Commit-Position: refs/heads/master@{#43020}
This patch changes tests right up until the SharedArrayBuffer
tests.
R=adamk
Review-Url: https://codereview.chromium.org/2681833003
Cr-Commit-Position: refs/heads/master@{#43019}
- removed getGeneratorObjectLocation from debugger-script.js,
- one more step to remove all debugger context usages in inspector.
BUG=v8:5510
R=yangguo@chromium.org,jgruber@chromium.org,alph@chromium.org
Review-Url: https://codereview.chromium.org/2678143002
Cr-Commit-Position: refs/heads/master@{#43018}
In addition to Array.prototype.values() which is already exposed, Blink
needs access to entries(), forEach() and keys() to properly set the
corresponding functions in value iterators for WebIDL conformance.
Add a few new entries to NATIVE_CONTEXT_IMPORTED_FIELDS and expand
V8_INTRINSICS_LIST, as well as some API tests for all these new exposed
functions.
BUG=chromium:632935
R=caitp@igalia.com,jochen@chromium.org,verwaest@chromium.org,yukishiino@chromium.org
Review-Url: https://codereview.chromium.org/2670833008
Cr-Commit-Position: refs/heads/master@{#43017}
Reason for revert:
False alarm, bot hiccup
Original issue's description:
> Revert of Reland: [Parse] ParseInfo owns the parsing Zone. (patchset #7 id:140001 of https://codereview.chromium.org/2632123006/ )
>
> Reason for revert:
> Speculative revert because of revert needed for https://codereview.chromium.org/2632123006
>
> Original issue's description:
> > Reland: [Parse] ParseInfo owns the parsing Zone.
> >
> > Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> > in preperation for enabling background compilation jobs for inner functions
> > share the AST in the outer-function's parse zone memory (read-only), with the
> > and zone being released when all compilation jobs have completed.
> >
> > BUG=v8:5203,v8:5215
> >
> > Review-Url: https://codereview.chromium.org/2632123006
> > Cr-Original-Commit-Position: refs/heads/master@{#42993}
> > Committed: 14fb337200
> > Review-Url: https://codereview.chromium.org/2632123006
> > Cr-Commit-Position: refs/heads/master@{#42996}
> > Committed: 9e7d5a6065
>
> TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2683733002
> Cr-Commit-Position: refs/heads/master@{#43008}
> Committed: 9fe08ec067TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2679303003
Cr-Commit-Position: refs/heads/master@{#43015}
Reason for revert:
False alarm, bot hiccup
Original issue's description:
> Revert of [parsing] Fix maybe-assigned for loop variables. (patchset #3 id:40001 of https://codereview.chromium.org/2673403003/ )
>
> Reason for revert:
> Speculative revert because of https://codereview.chromium.org/2679163002/.
>
> Original issue's description:
> > [parsing] Fix maybe-assigned for loop variables.
> >
> > Due to hoisting, the value of a 'var'-declared variable may actually change even
> > if the code contains only the "initial" assignment, namely when that assignment
> > occurs inside a loop. For example:
> >
> > let i = 10;
> > do { var x = i } while (i--):
> >
> > As a simple and very conservative approximation of this, we explicitly mark
> > as maybe-assigned any non-lexical variable whose "declaration" does not
> > syntactically occur in the function scope. (In the example above, it
> > occurs in a block scope.)
> >
> > BUG=v8:5636
> >
> > Review-Url: https://codereview.chromium.org/2673403003
> > Cr-Commit-Position: refs/heads/master@{#42989}
> > Committed: a33fcd663b
>
> TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:5636
>
> Review-Url: https://codereview.chromium.org/2679263002
> Cr-Commit-Position: refs/heads/master@{#43010}
> Committed: f3ae5ccf57TBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2686663002
Cr-Commit-Position: refs/heads/master@{#43013}
Reason for revert:
False alarm, bot hiccup
Original issue's description:
> Revert of Thread maybe-assigned through the bytecodes. (patchset #5 id:80001 of https://codereview.chromium.org/2655733003/ )
>
> Reason for revert:
> needed for properly reverting f3ae5ccf57
>
> Original issue's description:
> > Thread maybe-assigned through the bytecodes.
> >
> > This introduces LoadImmutableContextSlot and LoadImmutableCurrentContextSlot
> > bytecodes, which are emitted when reading from never-assigned context slot.
> >
> > There is a subtlety here: the slot are not immutable, the meaning is
> > actually undefined-or-hole-or-immutable.
> >
> > Review-Url: https://codereview.chromium.org/2655733003
> > Cr-Commit-Position: refs/heads/master@{#43000}
> > Committed: 17c2dd3886
>
> TBR=rmcilroy@chromium.org,bmeurer@chromium.org,neis@chromium.org,jarin@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/2680923003
> Cr-Commit-Position: refs/heads/master@{#43011}
> Committed: ece4e54a31TBR=rmcilroy@chromium.org,bmeurer@chromium.org,neis@chromium.org,jarin@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/2679953003
Cr-Commit-Position: refs/heads/master@{#43012}
Reason for revert:
needed for properly reverting f3ae5ccf57
Original issue's description:
> Thread maybe-assigned through the bytecodes.
>
> This introduces LoadImmutableContextSlot and LoadImmutableCurrentContextSlot
> bytecodes, which are emitted when reading from never-assigned context slot.
>
> There is a subtlety here: the slot are not immutable, the meaning is
> actually undefined-or-hole-or-immutable.
>
> Review-Url: https://codereview.chromium.org/2655733003
> Cr-Commit-Position: refs/heads/master@{#43000}
> Committed: 17c2dd3886TBR=rmcilroy@chromium.org,bmeurer@chromium.org,neis@chromium.org,jarin@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/2680923003
Cr-Commit-Position: refs/heads/master@{#43011}
Reason for revert:
Speculative revert because of https://codereview.chromium.org/2679163002/.
Original issue's description:
> [parsing] Fix maybe-assigned for loop variables.
>
> Due to hoisting, the value of a 'var'-declared variable may actually change even
> if the code contains only the "initial" assignment, namely when that assignment
> occurs inside a loop. For example:
>
> let i = 10;
> do { var x = i } while (i--):
>
> As a simple and very conservative approximation of this, we explicitly mark
> as maybe-assigned any non-lexical variable whose "declaration" does not
> syntactically occur in the function scope. (In the example above, it
> occurs in a block scope.)
>
> BUG=v8:5636
>
> Review-Url: https://codereview.chromium.org/2673403003
> Cr-Commit-Position: refs/heads/master@{#42989}
> Committed: a33fcd663bTBR=marja@chromium.org,adamk@chromium.org,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2679263002
Cr-Commit-Position: refs/heads/master@{#43010}
Reason for revert:
Speculative revert because of revert needed for https://codereview.chromium.org/2632123006
Original issue's description:
> Reland: [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Original-Commit-Position: refs/heads/master@{#42993}
> Committed: 14fb337200
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42996}
> Committed: 9e7d5a6065TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2683733002
Cr-Commit-Position: refs/heads/master@{#43008}
- Adds logical and arithmetic shifts for all integer types.
- Adds min and max for all integer types.
- Adds saturating add and subtract for small integer types.
- Removes lane operations from the MachineOperatorCache.
LOG=N
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2668013003
Cr-Commit-Position: refs/heads/master@{#43005}
This introduces LoadImmutableContextSlot and LoadImmutableCurrentContextSlot
bytecodes, which are emitted when reading from never-assigned context slot.
There is a subtlety here: the slot are not immutable, the meaning is
actually undefined-or-hole-or-immutable.
Review-Url: https://codereview.chromium.org/2655733003
Cr-Commit-Position: refs/heads/master@{#43000}
... and TypeFeedbackMetadata to FeedbackMetadata.
BUG=
Change-Id: I2556d1c2a8f37b8cf3d532cc98d973b6dc7e9e6c
Reviewed-on: https://chromium-review.googlesource.com/439244
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#42999}
Cleanup CHECK_EQ order and simplify CHECK_EQ(true/false).
Cleanup callorder for negative numbers
Cleanup callorder order for capital letter constants.
Cleanup callorder for test.x checks.
BUG=
Review-Url: https://codereview.chromium.org/2677183002
Cr-Commit-Position: refs/heads/master@{#42997}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Original-Commit-Position: refs/heads/master@{#42993}
Committed: 14fb337200
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42996}
Reason for revert:
doesn't compile on ToT
Original issue's description:
> Reland: [Parse] ParseInfo owns the parsing Zone.
>
> Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
> in preperation for enabling background compilation jobs for inner functions
> share the AST in the outer-function's parse zone memory (read-only), with the
> and zone being released when all compilation jobs have completed.
>
> BUG=v8:5203,v8:5215
>
> Review-Url: https://codereview.chromium.org/2632123006
> Cr-Commit-Position: refs/heads/master@{#42993}
> Committed: 14fb337200TBR=marja@chromium.org,mstarzinger@chromium.org,ahaas@chromium.org,verwaest@chromium.org,rmcilroy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2685543003
Cr-Commit-Position: refs/heads/master@{#42994}
Moves ownership of the parsing Zone to ParseInfo with a shared_ptr. This is
in preperation for enabling background compilation jobs for inner functions
share the AST in the outer-function's parse zone memory (read-only), with the
and zone being released when all compilation jobs have completed.
BUG=v8:5203,v8:5215
Review-Url: https://codereview.chromium.org/2632123006
Cr-Commit-Position: refs/heads/master@{#42993}
Due to hoisting, the value of a 'var'-declared variable may actually change even
if the code contains only the "initial" assignment, namely when that assignment
occurs inside a loop. For example:
let i = 10;
do { var x = i } while (i--):
As a simple and very conservative approximation of this, we explicitly mark
as maybe-assigned any non-lexical variable whose "declaration" does not
syntactically occur in the function scope. (In the example above, it
occurs in a block scope.)
BUG=v8:5636
Review-Url: https://codereview.chromium.org/2673403003
Cr-Commit-Position: refs/heads/master@{#42989}
For x64, ia32 and x87 we would pop the return address before the stack
overflow check. This meant the stack couldn't be unwound properly if
it was going to overflow. This CL moves the pop of the return address
to after the stack overflow check.
Also adds a regression test to check that a RangeError is thrown.
BUG=689016
Review-Url: https://codereview.chromium.org/2681643004
Cr-Commit-Position: refs/heads/master@{#42984}
This correctly marks the {JSCreate} operator as potentially throwing,
since it might trigger a property access of the 'prototype' property
during instantiation. This is observable, can throw (not kNoThrow),
might have side-effects (not kNoWrite), or even trigger a lazy deopt
event (not kNoDeopt). The inlining logic has been adapted to wire up
control projections accordingly.
Note that this does not yet take care of the "after" frame-state which
is associated with the {JSCreate} node introduced by the inliner. We
still might re-evaluate the property access upon lazy deoptimization.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-5638
BUG=v8:5638
Review-Url: https://codereview.chromium.org/2671203003
Cr-Commit-Position: refs/heads/master@{#42981}
- entries preview available even if debugger agent is disabled,
- less deprecated mirrors usage in debugger-script.js
- no usage of debugger context - zero probability of leaking it.
- better test coverage.
BUG=v8:5510
R=yangguo@chromium.org,jgruber@chromium.org,alph@chromium.org,luoe@chromium.org
Review-Url: https://codereview.chromium.org/2672213002
Cr-Commit-Position: refs/heads/master@{#42978}
- Removes shared InnerArrayCopyWithin JS builtin from src/js/array.js
- Implements %TypedArray%.prototype.copyWithin as a C++ builtin, which
relies on std::memmove rather than accessing individual eleements.
- Fixes the case where copyWithin is invoked on a TypedArray with a
detached buffer.
- Add tests to ensure that +/-Infinity (for all 3 parameters) is handled correctly by the
algorithm
The C++ version gets through the benchmark more than 25000 times as
quickly as the JS implementation.
BUG=v8:5925, v8:5929, v8:4648
R=cbruni@chromium.org, adamk@chromium.org, littledan@chromium.org
Review-Url: https://codereview.chromium.org/2671233002
Cr-Commit-Position: refs/heads/master@{#42975}
Keep the order in CHECK_EQ calls consistent as
(expected, actual).
Simplify CHECK_EQ(true, expected) to CHECK(expected) and
CHECK_EQ(false, expected) to CHECK(!expected).
BUG=
Review-Url: https://codereview.chromium.org/2677133002
Cr-Commit-Position: refs/heads/master@{#42964}
The results are unreliable as-is, because es5 and es6 run in the same d8
process consecutively. The graph also shows a huge amount of noise,
which seems to be mostly resolved with this change.
Review-Url: https://codereview.chromium.org/2675263002
Cr-Commit-Position: refs/heads/master@{#42961}
In preparation for more perf work in turbofan, so that we can actually
see the results on the graph.
BUG=v8:5932
Review-Url: https://codereview.chromium.org/2676263002
Cr-Commit-Position: refs/heads/master@{#42960}
TypeFeedbackVectors are strongly rooted by a closure. However, in modern
JavaScript closures are created and abandoned more freely. An important
closure may not be present in the root-set at time of garbage collection,
even though we've cached optimized code and use it regularly. For
example, consider leaf functions in an event dispatching system. They may
well be "hot," but tragically non-present when we collect the heap.
Until now, we've relied on a weak root to cache the feedback vector in
this case. Since there is no way to signal intent or relative importance,
this weak root is as susceptible to clearing as any other weak root at
garbage collection time.
Meanwhile, the feedback vector has become more important. All of our
ICs store their data there. Literal and regex boilerplates are stored there.
If we lose the vector, then we not only lose optimized code built from
it, we also lose the very feedback which allowed us to create that optimized
code. Therefore it's vital to express that dependency through the root
set.
This CL does this by creating a strong link to a feedback
vector at the instantiation site of the function closure.
This instantiation site is in the code and feedback vector
of the outer closure.
BUG=v8:5456
Review-Url: https://codereview.chromium.org/2674593003
Cr-Commit-Position: refs/heads/master@{#42953}
TailCallRuntime currently does not seem to handle adaptor frames
correctly.
BUG=chromium:688690
Review-Url: https://codereview.chromium.org/2675133003
Cr-Commit-Position: refs/heads/master@{#42950}
The property details of a LookupIterator are not accessible,
if the iterator state is interceptor. Instead, use the
property attributes.
Fixes a crash in Node.js tests in Debug mode, see
c2c6ae52ea
BUG=
Review-Url: https://codereview.chromium.org/2675993002
Cr-Commit-Position: refs/heads/master@{#42941}
Blink uses access checks to be sure that objects from one context doesn't access objects in another. Heap profiler uses current context to call this checks, we need to be sure that current context is empty to allow heap profiler collect all objects without crash.
BUG=chromium:661223
R=alph@chromium.org,ulan@chromium.org
Review-Url: https://codereview.chromium.org/2669393002
Cr-Commit-Position: refs/heads/master@{#42939}
Apparently it happens quite easily that different NaNs are produced in
the interpreter than in the execution of the compiled code. This
non-determinism caused problems for the fuzzer which compares the
equality of the results of the interpreter and the compiled code.
I decided therefore to refactor the detection of non-determinism in the
interpreter. Instead of tracking whether potentially non-deterministic
NaNs were produced, I track now whether potentially non-deterministic
NaNs could have been observed. The only way the NaN non-determinism can
be observed is by observing the non-deterministic bit pattern of the
NaN. AFAICT the only way to observe the bit pattern is with a
I(32|64)_REINTERPRET_F(32|64) instruction or with a F(32|64)_STORE
followed by a load. Therefore I flag an execution as potentially
non-deterministic when either a NaN is reinterpreted to an int, or when
a NaN is stored to memory.
R=titzer@chromium.org, eholk@chromium.org
BUG=682180
Review-Url: https://codereview.chromium.org/2671803002
Cr-Commit-Position: refs/heads/master@{#42917}
The wasm module we generate for the test case actually has an initial
memory size of 16. In the mjsunit test we generate, however, we set the
initial memory size to 32. This CL changes the initial memory size in
the mjsunit test now to 16.
R=eholk@chromium.org
Change-Id: I5d3a30a97c3b0ba3105a8cf17d4c088a8fb9c8b7
Reviewed-on: https://chromium-review.googlesource.com/436544
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#42915}
Turns out is_hidden is not the right condition for "scope should be present in
the preparse data". For now, replaced it with "is hidden leaf scope" (i.e.,
doesn't contain any non-hidden scopes). That's probably not the right condition
either; will be fixed once there's more data to decide what the right condition
is.
BUG=v8:5516
R=vogelheim@chromium.org
Review-Url: https://codereview.chromium.org/2669163002
Cr-Commit-Position: refs/heads/master@{#42909}
V8DebuggerAgentImpl::m_skipAllPaused is moved to V8Debugger.
V8DebuggerAgentImpl::didPaused doesn't return shouldBreak flag and called only when break is required and stack trace presented.
V8DebuggerAgentImpl doesn't store paused context.
Logic of conversion step-next at return into step-in is moved to debug.cc.
BUG=none
R=dgozman@chromium.org,yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2668763003
Cr-Commit-Position: refs/heads/master@{#42907}
We don't need Code::CALL_IC for anything now that the CallICStub is
migrated and no longer hooks into the traditional IC system.
R=yangguo@chromium.org
BUG=v8:5049
Review-Url: https://codereview.chromium.org/2669193002
Cr-Commit-Position: refs/heads/master@{#42890}
First discovery by the names section fuzzer I think. During the decoding
of the names of locals only ok() of the outer decoder was checked, not
the ok() of the actual names section decoder.
R=tizer@chromium.org
BUG=chromium:684855
Review-Url: https://codereview.chromium.org/2648383007
Cr-Commit-Position: refs/heads/master@{#42880}
- Remove obsolete BreakLocatorType.
- Perform PrepareStepOnThrow after OnException event, in case stepping
was scheduled in the exception event.
- Use frame count instead of frame pointer for stepping. Frame pointer
is not reliable due to possible deopts.
- Consistently check for inlined functions in inlined frames.
- Use SharedFunctionInfo in FloodWithOneshot and EnsureDebugInfo.
R=jgruber@chromium.org
BUG=v8:5901
Review-Url: https://codereview.chromium.org/2664793002
Cr-Commit-Position: refs/heads/master@{#42878}
This avoids the need to pull in the UTF-8 encoding code from the public API,
and allows it to take advantage of any supported way that i::String can be
encoded (one- or two-byte).
Backward compatibility is maintained, but this is the behavior beginning
with this version.
BUG=chromium:686159
Review-Url: https://codereview.chromium.org/2665653004
Cr-Commit-Position: refs/heads/master@{#42872}
Also if the count is not specified, it should wake all waiters.
BUG=v8:4777
Review-Url: https://codereview.chromium.org/2659083004
Cr-Commit-Position: refs/heads/master@{#42871}
- Adds vqadd.s/u, vqsub.s/u for all integer lane sizes.
- Refactors disassembler and simulator, using switches instead
of long if-else chains.
LOG=N
BUG=v8:4124
Review-Url: https://codereview.chromium.org/2649323012
Cr-Commit-Position: refs/heads/master@{#42865}
The int64-lowering only lowered store instructions with a word64 store
representation. For all other stores the default lowering applied. The
default lowering replaces all input nodes with both their replacement
nodes, which can change the number of input nodes of the lowered node.
In WebAssembly there exist stores which take an I64 input and store it
with a different representation, e.g. I32. In TurboFan this translates
to a store node with word32 store representation and a word64 value
input. The default lowering replaces the word64 value input to become
two word32 value inputs, which makes the number of inputs of the store
node invalid. This CL discards the high word replacement of the value
input so that the number of input nodes of a store node does not change
in the default lowering.
R=titzer@chromium.orgCC=rossberg@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/2668023004
Cr-Commit-Position: refs/heads/master@{#42860}
This is a step towards encoding all the necessary information in
the feedback slot kind instead of storing it in the IC dispatcher's
code object flags.
BUG=v8:5849, v8:5917
Review-Url: https://codereview.chromium.org/2662113005
Cr-Commit-Position: refs/heads/master@{#42859}
Using .caller, one can get access to the internal function that invokes the
handler passed to Promise.prototype.then. This internal function is a TF
builtin that was set up as non-native and without an argument adaptor. As a
consequence of this, when accessing .arguments on it, the frame-walking logic in
the .arguments accessor thinks the number of arguments is -1 and we try to
allocate an array of size -1.
This CL marks the builtin function as native (making its .arguments be null),
along with a few others that may have been incorrect in the same way.
BUG=chromium:682349
Review-Url: https://codereview.chromium.org/2672453002
Cr-Commit-Position: refs/heads/master@{#42855}
I removed some constant folding optimizations for float instruction in
https://codereview.chromium.org/2647353007 because they were incorrect
if the input was a signalling NaN. Removing these optimizations, however
had an unexpectedly big impact on asm.js performance. With this CL I
restore the optimizations again when the source origin is not wasm. In
JavaScript signalling NaNs are not observable and therefore the
optimizations are correct.
R=titzer@chromium.org
BUG=chromium:686654
Review-Url: https://codereview.chromium.org/2666903002
Cr-Commit-Position: refs/heads/master@{#42850}
The function being tested is forced to go through Turbofan anyway (since it references a module variable).
Adding --turbo explicitly just to make a check happy.
BUG=
Review-Url: https://codereview.chromium.org/2664393003
Cr-Commit-Position: refs/heads/master@{#42844}
The String.prototype was altered after snapshot time (during
experimental natives setup), invalidating the stored map used for
fast-path checks.
BUG=
Review-Url: https://codereview.chromium.org/2663303003
Cr-Commit-Position: refs/heads/master@{#42842}
Rename to Construct and ConstructWithSpread, to match the names of
the JSOperators used.
Unfortunately, I can't find a way for auto-formatting to stay happy unless we
change the indentation for the whole BYTECODE_LIST macro.
Review-Url: https://codereview.chromium.org/2663963003
Cr-Commit-Position: refs/heads/master@{#42840}
Throw a syntax error on "new import(1)" expression. Adds a new error msg as well.
BUG=v8:5785
Review-Url: https://codereview.chromium.org/2661113002
Cr-Commit-Position: refs/heads/master@{#42827}
Also updated some tests due to the change. The general pattern is when a
trailing comma is expected to cause a SyntaxError, an additional comma was
added.
BUG=v8:5051
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
Review-Url: https://codereview.chromium.org/2638513002
Cr-Commit-Position: refs/heads/master@{#42826}
If hidden scopes are ignored, the scopes and variable produced by the PreParser
already matched the scopes and variables produced by the Parser.
BUG=v8:5516
R=vogelheim@chromium.org
Review-Url: https://codereview.chromium.org/2663043003
Cr-Commit-Position: refs/heads/master@{#42824}
Rewrites import expression into a runtime call. Uses peekahead to
determine if parsing an import declaration or import expression.
The runtime call doesn't actually do the import yet, will be added in
follow on patch.
Adds a new --harmony-dynamic-import flag.
Adds a ignore_error_msg parameter to the test runner to ignore the
discrepancy in the error messages while parsing import expression with
parser and pre parser. This discrepancy will actually never happen in
real code.
BUG=v8:5785
Review-Url: https://codereview.chromium.org/2661933003
Cr-Commit-Position: refs/heads/master@{#42820}
Reason for revert:
Causes test timeouts.
Original issue's description:
> [Test] Do a set number of runs to trigger optimisation for SuperSpread.
>
> BUG=v8:5895
>
> Review-Url: https://codereview.chromium.org/2669523002
> Cr-Commit-Position: refs/heads/master@{#42811}
> Committed: d4c22c3084TBR=bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5895
Review-Url: https://codereview.chromium.org/2669553002
Cr-Commit-Position: refs/heads/master@{#42812}
The KeyedStoreMode that we get out of the FeedbackNexus doesn't
necessarily need to apply when we have "static knowledge" about
the receiver, i.e. when the receiver is a known JSTypedArray, but
the KEYED_STORE_IC has seen only JSArray instances so far. The
DCHECK was too restrictive in this case, since we can just ignore
the KEYED_STORE_IC mode (like we ignore the maps).
BUG=chromium:685050
R=ishell@chromium.org
Review-Url: https://codereview.chromium.org/2668643002
Cr-Commit-Position: refs/heads/master@{#42810}
We were missing a case for Tagged->TaggedSigned conversions when the
input type is known to be Type::SignedSmall.
BUG=chromium:687029
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2666863002
Cr-Commit-Position: refs/heads/master@{#42809}
We cannot eliminate unused CheckFloat64Hole nodes, since loading from a
holey array can have side-effects, i.e. triggering getters in the
prototype chain.
R=mvstanton@chromium.org
BUG=chromium:686737
Review-Url: https://codereview.chromium.org/2665123002
Cr-Commit-Position: refs/heads/master@{#42806}
Dealing with this case requires a wire format change. It is possible that an
element can be absent even in an array where the dense format was chosen
(because the array initially had no holes), if the elements are modified while
they are being serialized. In this case, a new tag for the "hole" is emitted.
The logic to treat undefined in dense arrays as an absent property is restricted
to versions of the wire format that this tag did not exist.
BUG=chromium:686159,chromium:665820
Review-Url: https://codereview.chromium.org/2660093002
Cr-Original-Commit-Position: refs/heads/master@{#42784}
Committed: dc85f4c833
Review-Url: https://codereview.chromium.org/2660093002
Cr-Commit-Position: refs/heads/master@{#42800}
The existing unit test explicitly checked for this case, but was - under
the right circumstances - defeated by the optimization to not re-run the
whole position search if we were close enough.
BUG=chromium:685618
Review-Url: https://codereview.chromium.org/2663883002
Cr-Commit-Position: refs/heads/master@{#42794}
Reason for revert:
Seems to break layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/13146https://github.com/v8/v8/wiki/Blink-layout-tests
Original issue's description:
> ValueSerializer: Distinguish between 'undefined' and an absent property.
>
> Dealing with this case requires a wire format change. It is possible that an
> element can be absent even in an array where the dense format was chosen
> (because the array initially had no holes), if the elements are modified while
> they are being serialized. In this case, a new tag for the "hole" is emitted.
>
> The logic to treat undefined in dense arrays as an absent property is restricted
> to versions of the wire format that this tag did not exist.
>
> BUG=chromium:686159,chromium:665820
>
> Review-Url: https://codereview.chromium.org/2660093002
> Cr-Commit-Position: refs/heads/master@{#42784}
> Committed: dc85f4c833TBR=jkummerow@chromium.org,jbroman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:686159,chromium:665820
Review-Url: https://codereview.chromium.org/2667553003
Cr-Commit-Position: refs/heads/master@{#42788}
Dealing with this case requires a wire format change. It is possible that an
element can be absent even in an array where the dense format was chosen
(because the array initially had no holes), if the elements are modified while
they are being serialized. In this case, a new tag for the "hole" is emitted.
The logic to treat undefined in dense arrays as an absent property is restricted
to versions of the wire format that this tag did not exist.
BUG=chromium:686159,chromium:665820
Review-Url: https://codereview.chromium.org/2660093002
Cr-Commit-Position: refs/heads/master@{#42784}
When WebAssembly.Table initial size is greater than the declared initial size, table size references should be updated on instantiate for functions to be called at indices greater than the declared initial size.
R=bradnelson@chromium.org, titzer@chromium.org
Review-Url: https://codereview.chromium.org/2661773002
Cr-Commit-Position: refs/heads/master@{#42781}
Without this CL we have only limit for amount of console messages and if user are dumping a huge messages we pretty soon run out of memory.
So let's introduce limit for memory consumption it would help chromium and Node.js as well.
BUG=chromium:671489
R=dgozman@chomium.org,alph@chromium.org, hpayer@chromium.org, ulan@chromium.org
Review-Url: https://codereview.chromium.org/2653293003
Cr-Commit-Position: refs/heads/master@{#42780}
The graphs don't show any performance bump for
https://codereview.chromium.org/2659623002, which I do see a much better result for
locally. I suspect the function isn't being optimized in turbofan when the
benchmarks run. Maybe this warmup flag will trigger that.
BUG=v8:5895
Review-Url: https://codereview.chromium.org/2664783002
Cr-Commit-Position: refs/heads/master@{#42776}
They have the same lifetime. It's a match!
Both structures are native context dependent and dealt with (creation,
clearing, gathering feedback) at the same time. By treating the spaces used
for literal boilerplates as feedback vector slots, we no longer have to keep
track of the materialized literal count elsewhere.
A follow-on CL removes even more parser infrastructure related to this count.
BUG=v8:5456
Review-Url: https://codereview.chromium.org/2655853010
Cr-Commit-Position: refs/heads/master@{#42771}
Where the arguments have already been inlined, we can replace these calls with a
direct call to construct. We have to make sure that the iteration over the arguments is not observable.
BUG=v8:5895
Review-Url: https://codereview.chromium.org/2659623002
Cr-Commit-Position: refs/heads/master@{#42765}
This avoids using kTaggedSigned and kTaggedPointer because the
semantic information of those type could be invalid in unreachable
code.
For example, SmiCheck(0.1) has representation TaggedSigned, but it is
later compiled to DeoptimizeUnless(ObjectIsSmi(0.1)) with the constant
0.1 directly connected to the uses. If the use is state-values, which
recorded the TaggedSigned representation of CheckSmi, the code
generator will be confused because it will see constant 0.1 that
claims to be TaggedSigned value.
BUG=chromium:675704
Review-Url: https://codereview.chromium.org/2656243004
Cr-Commit-Position: refs/heads/master@{#42756}
memcpy is faster than UTF-8 encoding/decoding. This yields 10-20% wins on
serializing and deserializing long ASCII strings, according to
blink_perf.bindings -- and these are already in a fast path where the entire
string is known to be ASCII (but this has to be checked). The win may be
larger for strings in Latin-1 but not ASCII (though I suspect this is an
uncommon case).
A change is also made to make ValueSerializerTest.EncodeTwoByteStringUsesPadding
survive wire format version number changes.
This is the first of a series of wire format changes from the previous Blink
format. The deserializer continues to be able to read the old format, but
Chromium M56 will no longer be able to read the messages written by this, in M58.
BUG=chromium:686159
Review-Url: https://codereview.chromium.org/2658793004
Cr-Commit-Position: refs/heads/master@{#42753}
This unifies the behavior of Scope::DeclareVariableName with
Scope::DeclareVariable.
BUG=v8:5516
Review-Url: https://codereview.chromium.org/2658063005
Cr-Commit-Position: refs/heads/master@{#42744}
Some tests require a lot of memory and they fail on buildbots if they run
in parallel with other tests of the same kind.
We try to limit this by disabling multiple vairants of the same tests,
assuming this would stop the failures in most of the cases.
BUG=
Review-Url: https://codereview.chromium.org/2653603002
Cr-Commit-Position: refs/heads/master@{#42741}
The StringIndexOf operation is pure on the JS level, but the actual stub
call must be in the effect chain later so that the Scheduler doesn't
place it inside some allocation region (The %StringIndexOf runtime
function may trigger a GC for string flattening).
BUG=chromium:685580
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2657243002
Cr-Commit-Position: refs/heads/master@{#42736}
Basically, with --deopt-every-n-times flag all bets are off since
the functions can be optimized and deoptimized at any time.
BUG=v8:5890
Review-Url: https://codereview.chromium.org/2655263004
Cr-Commit-Position: refs/heads/master@{#42735}
The mentioned asserts did not work properly with interpreted and turbofanned functions.
To fix this issue %GetOptimizationStatus() now returns a set of flags instead of a single value.
This CL also adds more helper functions to mjsunit, like isNeverOptimize(), isAlwaysOptimize(),
isOptimized(fun), etc.
BUG=v8:5890
Review-Url: https://codereview.chromium.org/2654733004
Cr-Original-Commit-Position: refs/heads/master@{#42703}
Committed: d1ddec7857
Review-Url: https://codereview.chromium.org/2654733004
Cr-Commit-Position: refs/heads/master@{#42731}
Always execute the implicit return if we fell off the function bytes.
This is not considered an additional "step" as it is not executing a
wasm instruction.
Otherwise, we might pause at an invalid position (one after the
function bytes).
R=titzer@chromium.org
BUG=v8:5822
Review-Url: https://codereview.chromium.org/2650293003
Cr-Commit-Position: refs/heads/master@{#42730}
Previously, when restarting a frame, we would rewrite all frames
between the debugger activation and the frame to restart to squash
them, and replace the return address with that of a builtin to
leave that rewritten frame, and restart the function by calling it.
We now simply remember the frame to drop to, and upon returning
from the debugger, we check whether to drop the frame, load the
new FP, and restart the function.
R=jgruber@chromium.org, mstarzinger@chromium.org
BUG=v8:5587
Review-Url: https://codereview.chromium.org/2636913002
Cr-Commit-Position: refs/heads/master@{#42725}
Memory.Grow should detach the ArrayBuffer associated with the Mem object after Grow. Currently, when guard pages are enabled protection is changed to make more of the buffer accessible. This does not work for when the buffer should be detached after grow, because the memory object has a reference to the same buffer befor/after grow.
R=titzer@chromium.org, eholk@chromium.org
Review-Url: https://codereview.chromium.org/2653183003
Cr-Commit-Position: refs/heads/master@{#42717}
