This is primarily needed to test D8 under ASan. ASan installs a signal handler
early in the process startup to show stack traces from crashes. We need to make
sure that if V8 does not handle a signal then the existing handler gets a
chance.
This change only applies when using V8's default signal handler. When
integrating with the embedder's signal handler the behavior is unchanged.
Bug: chromium:771948
Change-Id: Ifd560acf9700ec5f714f009530258fa92c83cabe
Reviewed-on: https://chromium-review.googlesource.com/705823
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48429}
The specced semantics of GetSubstitution are expected to change in the
case of malformed named references, or named references to nonexistent
named groups. The former will evaluate to the identity replacement of
'$<', while the latter will result in replacement by the empty string.
See also:
https://github.com/tc39/proposal-regexp-named-groups/issues/29
Bug: v8:5437, v8:6912
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I879288f775774cb0ec563f9d9129a99710efb77c
Reviewed-on: https://chromium-review.googlesource.com/708654
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48426}
When hitting objects that are allocated in the most recent lienar
allocation area, the concurrent marker currently has to bail out to the
main thread.
However, we only have to delay processing those objects until we are at
a safepoint, e.g. IM::Step(). With this change we flush those
on-hold-objects back to the shared queue upon performing an incremental
marking step.
Bug: chromium:694255
Change-Id: I25647d0fc581a5c4de0346bc394dc51062f65f70
Reviewed-on: https://chromium-review.googlesource.com/707315
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48424}
Previously, JS_ASYNC_GENERATOR_OBJECT_TYPE maps led to an UNREACHABLE
macro, but are now restored like ordinary JSGeneratorObjects.
BUG=chromium:772649, v8:5855
R=adamk@chromium.org, yangguo@chromium.org, verwaest@chromium.org
Change-Id: I02e101565625f8a057d0e5b242a5fe0df263df89
Reviewed-on: https://chromium-review.googlesource.com/706780
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48423}
This reverts commit 7c80f9ce69.
Reason for revert: arm64 msan failures: https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/17455/steps/Check/logs/copy_slots_up
Original change's description:
> [arm64] Add slot copier to masm and use in builtins
>
> Abstract some stack slot copies through a macro assembler function. This
> eliminates some non-paired stack operations.
>
> This is a reland of 1cc93be0f1 with
> additional tests, originally reviewed on
> https://chromium-review.googlesource.com/685238 and reverted due to an
> unrelated intermittent x64 failure.
>
> Bug: v8:6644
> Change-Id: If22b359dbda4bab1cb83cd8c44a2af5801012c37
> Reviewed-on: https://chromium-review.googlesource.com/707247
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
> Cr-Commit-Position: refs/heads/master@{#48419}
TBR=rmcilroy@chromium.org,martyn.capewell@arm.com,bmeurer@chromium.org
Change-Id: I8a8aeff89b6995d5fffaab1f2e4e45f478c28bed
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6644
Reviewed-on: https://chromium-review.googlesource.com/708814
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48420}
Abstract some stack slot copies through a macro assembler function. This
eliminates some non-paired stack operations.
This is a reland of 1cc93be0f1 with
additional tests, originally reviewed on
https://chromium-review.googlesource.com/685238 and reverted due to an
unrelated intermittent x64 failure.
Bug: v8:6644
Change-Id: If22b359dbda4bab1cb83cd8c44a2af5801012c37
Reviewed-on: https://chromium-review.googlesource.com/707247
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/master@{#48419}
This makes sure that frames representing builtin stub continuations not
only materialize all stack slots, but also spilled register values. Note
that this also applies when the stub frame is not the top-most frame.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-6907
BUG=v8:6907
Change-Id: I01a2edf5629de6aac61ceea350d1ab5f91dc2dc1
Reviewed-on: https://chromium-review.googlesource.com/707245
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48415}
This flag was originally added as a staging mechanism to let us land and test
guard regions without the full trap handler feature landing. Additionally, we
thought we might enable guard regions without trap handlers on some systems.
Trap handlers are now supported, and there's not a real compelling reason for
why we need guard regions without trap handlers. Keeping the separate flag leads
to confusion, since some code treats guard regions and trap handlers the same,
while other code treats them as independent.
Removing this flag and its associated special cases makes everything more
uniform and predictable.
R=gdeepti@chromium.org
Change-Id: Icebab91d1f1e0c55e7a35c75b880085d37fa14ae
Reviewed-on: https://chromium-review.googlesource.com/706570
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48411}
This ensures that platform is initialized before the isolate and
properly restores the previous platform at the end of the test.
Bug:
Change-Id: I2771b7538362c400c5ff61411222beb7d7e62b02
Reviewed-on: https://chromium-review.googlesource.com/707111
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48405}
This ensures the JSFunction objects materialized by the deoptimizer have
the correct instance size (depending on the given map). There are corner
cases where the instance size might vary due to in-object properties.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-772610
BUG=chromium:772610
Change-Id: I4808c7260db1adbd1cdc3871c2a946475e4934f2
Reviewed-on: https://chromium-review.googlesource.com/707109
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48383}
Each concurrent marking task maintains task_state[i]->marked_bytes.
When a task finishes, its local counter is flushed into global
total_marked_bytes_ atomic counter.
Bug: chromium:694255
Change-Id: I629467385e80bf229e06a4231673ceb5ef8e4aea
Reviewed-on: https://chromium-review.googlesource.com/704823
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48374}
Missing arguments are identical to undefined, and are converted to the
integer 0 by ECMAScript {ToInteger()}.
Add more tests, and enable previously disabled tests.
There is a follow-up refactoring here: https://crrev.com/c/704586R=titzer@chromium.org, mstarzinger@chromium.org
Change-Id: I89cc259aaf5975ec2f6f51ff002e7d1b32adba5e
Reviewed-on: https://chromium-review.googlesource.com/704658
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48373}
The escape analysis is able to perform scalar replacement on JSArrays
with in-object properties (which currently only happens for subclasses
of the Array constructor), but the Deoptimizer didn't properly
materialized and initialized the values of the in-object fields so far.
Bug: chromium:772689, v8:6399
Change-Id: I6555a46773d2a1543db069142aa05f4337566b9c
Reviewed-on: https://chromium-review.googlesource.com/706781
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48365}
These will be used in subsequent CLs to add spec-compliant builtins
on Array.prototype built with the CSA.
Change-Id: I4c9f72f90dffe018b99efdc73e9d40b3d175c2aa
Reviewed-on: https://chromium-review.googlesource.com/704115
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48362}
Rewrites import.meta expressions into null literals. Builds on top
of- and requires dynamic import parsing to simplify the implementation.
Adds a new --harmony-import-meta flag.
BUG=v8:6693
Change-Id: Iadb7ddf6bad8986bf3ad641dbd3826fe730b5f44
Reviewed-on: https://chromium-review.googlesource.com/702678
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48359}
Use case: anonymous script with sourceMappingUrl. User can set
breakpoint in source with sourceUrl from sourceMap, we persist this
breakpoint in DevTools and on page reload breakpoint should be restored
correctly.
Debugger.setBreakpointByUrl method provides capabilities to set
provisional breakpoints and looks like best candidate for new "scriptHash"
argument.
I considered other options such as replacing scriptId with something
more persistent like "script-hash:script-with-this-hash-number" but it
looks more complicated and doesn't provide clear advantages.
One pager: http://bit.ly/2wkRHntR=pfeldman@chromium.org
Bug: chromium:459499
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I0e2833fceffe6b04afac01d1a4522d6874b6067a
Reviewed-on: https://chromium-review.googlesource.com/683597
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48357}
Make calls like
new Array(n)
new A(n)
(where A is a subclass of Array) inlinable into TurboFan. We do this by
speculatively checking that n is an unsigned integer that is not greater
than JSArray::kInitialMaxFastElementArray, and then lowering the backing
store allocation to a builtin call. The speculative optimization is
either protected by the AllocationSite for the Array constructor
invocation (if we have one), or by a newly introduced global protector
cell that is used for Array constructor invocations that don't have an
AllocationSite, i.e. the ones from Array#map, Array#filter, or from
subclasses of Array.
Next step will be to implement the backing store allocations inline in
TurboFan, but that requires Loop support in the GraphAssembler, so it's
done as a separate CL. This should further boost the performance.
This boosts the ARES6 ML benchmark by up to 8% on the steady state,
and also improves monomorphic Array#map calls by around 20-25% on the
initial setup.
Bug: v8:6399
Tbr: ulan@chromium.org
Change-Id: I7c8bdecf7c814ce52db6ee3051c3206a4f7d4bb6
Reviewed-on: https://chromium-review.googlesource.com/704639
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48348}
This brings V8's behavior in line with both the spec and with
other engines.
This also fixes the (now-incorrect) DCHECK in BytecodeGenerator relating
to the delete operator's application to a VariableProxy.
Bug: v8:6697, v8:6721
Change-Id: I413c02af235b0bb652eb4c5d5c971e2cf80e0906
Reviewed-on: https://chromium-review.googlesource.com/703894
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48346}
Fix disassembly of atomic operations for the inspector.
BUG=v8:6842,v8:6532
Change-Id: I3701b55c28b10561d1726e2c0b9fe2e1b2c76b8e
Reviewed-on: https://chromium-review.googlesource.com/703468
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48324}
Power-of-two radixes were supported already; this adds all others
(with 2 <= radix <= 36).
Bonus: fix digit_div fallback path for divisors with no leading zeros.
Bug: v8:6791
Change-Id: Id472667f057ad13338e0d8257a899490490e6f8f
Reviewed-on: https://chromium-review.googlesource.com/693316
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48323}
This adds a new simd lowering execution mode for
simd and re-enables the lowering tests
R=titzer@chromium.org,gdeepti@chromium.org,bbudge@chromium.org,mtrofin@chromium.org
BUG=v8:6020
Change-Id: Ice6b7ff2f5973804d379c88241d49b811429a965
Reviewed-on: https://chromium-review.googlesource.com/698928
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48322}
The code used to rely on all such loops having a block scope around
them, but that is no longer the case for loops whose loop variables
are VAR-declared.
This patch introduces a new DeclarationDescriptor::Kind for such
variables, and sets it during parsing, allowing the variable
declaration code to note them as assigned appropriately.
Bug: chromium:768158
Change-Id: I0cd60e8c8c735681be9dbb9344a93156af09c952
Reviewed-on: https://chromium-review.googlesource.com/701624
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48320}
At the moment we check only in the module-decoder if the sections in a
module appear at most once. The code section, however, we process
already before this check. With this CL we check that there is at most
one code section before we start processing it.
R=clemensh@chromium.org
TEST=WasmStreamingDecoderTest.TwoCodeSections
Bug: chromium:771916
Change-Id: Icc79d5a87ab39f450a35c688f74ea5e67cae4b3c
Reviewed-on: https://chromium-review.googlesource.com/702379
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48314}
This makes the test robust for stress GC flags.
Bug:
Change-Id: Ica65987f0ee09fbdb4aab233dea4c51db5b19459
Reviewed-on: https://chromium-review.googlesource.com/702436
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48313}
This fixes some of the old legacy API that used empty Handle<>
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I861e31a4a6f65bc497bfc512174adba39c17abca
Reviewed-on: https://chromium-review.googlesource.com/701634
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48311}
The catch variable is a special VAR-mode variable which is not in a declaration
scope. Normally creating such a variable is not possible with DeclareVariable,
but Parser bypasses it by calling DeclareLocal directly (which doesn't have the
hoisting check).
PreParser used to cut corners and declare the catch variable as a LET-mode
variable to prevent hoisting.
But since LET and VAR variables behave differently when deciding whether they
block sloppy block function hoisting, that approach doesn't fly.
BUG=v8:5516,chromium:771474
Change-Id: Ic6f5f4996416c9fa59132725c8b0b6b570c72f48
Reviewed-on: https://chromium-review.googlesource.com/700634
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48308}
Change-Id: Ib36b6e27476f7cc1e2064e147fbfa7d3d1e28b49
These will be used in subsequent CLs to add spec-compliant builtins
on Array.prototype built with the CSA.
Change-Id: Ib36b6e27476f7cc1e2064e147fbfa7d3d1e28b49
Reviewed-on: https://chromium-review.googlesource.com/700694
Commit-Queue: Daniel Clifford <danno@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48306}
This reverts commit d0651bd108.
Reason for revert: Breaks gc stress with embedded snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/15355
Original change's description:
> [language] Implement optional catch binding proposal
>
> This allows the syntax `try {} catch {}` (with no binding after the
> `catch`).
>
> See https://github.com/michaelficarra/optional-catch-binding-proposal/
>
> Currently behind --harmony-optional-catch-binding.
>
> As part of the implementation, this allows TryCatchStatements to not
> have an associated catch scope; various paths which assumed they
> would have been updated to handle this case.
>
> Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
> Change-Id: Ic525b45199eef025eb05da562e10fbd4f3d7465f
> Reviewed-on: https://chromium-review.googlesource.com/571453
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Commit-Queue: Kevin Gibbons <bakkot@gmail.com>
> Cr-Commit-Position: refs/heads/master@{#48300}
TBR=rmcilroy@chromium.org,adamk@chromium.org,marja@chromium.org,gsathya@chromium.org,bakkot@gmail.com
Change-Id: I63d68160ec75b87e28d3dcdddca2d8b7d0503b46
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/702334
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48303}
Sometimes, the embedder might want to merge a fix to an abandoned branch
or to a supported branch but the fix is not relevant to Chromium.
This adds a new version string that the embedder can set at compile time
and that will be appended to the official V8 version.
The separator must be provided in the string. For instance, to have a
full version string like "6.0.287.53-emb.1", the embedder must set
V8_EMBEDDER_STRING to "-emb.1".
Related Node.js issue: https://github.com/nodejs/node/pull/9754
BUG=v8:5740
R=machenbach@chromium.org
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ifa2d9bd213795e6d54886436f8c3787ac6162823
Reviewed-on: https://chromium-review.googlesource.com/690475
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Michaël Zasso <mic.besace@gmail.com>
Cr-Commit-Position: refs/heads/master@{#48301}
This allows the syntax `try {} catch {}` (with no binding after the
`catch`).
See https://github.com/michaelficarra/optional-catch-binding-proposal/
Currently behind --harmony-optional-catch-binding.
As part of the implementation, this allows TryCatchStatements to not
have an associated catch scope; various paths which assumed they
would have been updated to handle this case.
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ic525b45199eef025eb05da562e10fbd4f3d7465f
Reviewed-on: https://chromium-review.googlesource.com/571453
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Kevin Gibbons <bakkot@gmail.com>
Cr-Commit-Position: refs/heads/master@{#48300}
Previously, we would first fire the PromiseRejectCallback before
fulfilling the promise. This patch changes the behavior to first
fulfill the promise. This behavior is more intuitive.
This patch also merges the check for PromiseHook callback with the
debug callback, since they use the same boolean bit on the isolate.
Bug: v8:6880
Change-Id: Ia04867e16423a1d6006f0f3f93a14fa6026e17ed
Reviewed-on: https://chromium-review.googlesource.com/700980
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48298}
CCalls have significantly less overhead than runtime calls which will improve
runtime performance on programs that make lots of transitions between JS and
Wasm.
Bug: v8:5277
Change-Id: If09dea97f24eb43753847e2b894ebc1ba5168c23
Reviewed-on: https://chromium-review.googlesource.com/688481
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48297}
This reverts commit 5e76ff5a4a.
Reason for revert: tsan failures - https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/17574
Original change's description:
> Reland "[wasm] always allocate memory when guard regions are needed"
>
> This reverts commit 7cf29d8df3.
>
> Original change's description:
> > [wasm] always allocate memory when guard regions are needed
> >
> > When using trap handlers, memory references do not get any checks inserted. This
> > means there is no check for a null memory as happens when the memory size is
> > 0. Normally this would be correctly caught as an out of bounds access, since the
> > low memory addresses are not normally mapped. However, if they were mapped for
> > some reason, we would not catch the out of bounds access.
> >
> > The fix is to ensure WebAssembly instances always have a guard region even if
> > the memory is size 0.
> >
> > Bug: chromium:769637
>
> Change-Id: I09fdaea92b7ccb3a6cc9e28392171ec098538a00
> Reviewed-on: https://chromium-review.googlesource.com/695812
> Commit-Queue: Eric Holk <eholk@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48293}
TBR=gdeepti@chromium.org,mtrofin@chromium.org,mlippautz@chromium.org,eholk@chromium.org,eholk@google.com,clemensh@chromium.org
Change-Id: I52d5354126158a92602b08c48703d562ac95075b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/699599
Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48294}
This reverts commit 7cf29d8df3.
Original change's description:
> [wasm] always allocate memory when guard regions are needed
>
> When using trap handlers, memory references do not get any checks inserted. This
> means there is no check for a null memory as happens when the memory size is
> 0. Normally this would be correctly caught as an out of bounds access, since the
> low memory addresses are not normally mapped. However, if they were mapped for
> some reason, we would not catch the out of bounds access.
>
> The fix is to ensure WebAssembly instances always have a guard region even if
> the memory is size 0.
>
> Bug: chromium:769637
Change-Id: I09fdaea92b7ccb3a6cc9e28392171ec098538a00
Reviewed-on: https://chromium-review.googlesource.com/695812
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48293}
Fix an error overwriting the `prototype` property of async generator
functions when FLAG_enable_slow_asserts is enabled.
Previously, the `initial_async_generator_prototype` field was never
written to the native context, and was always undefined. This caused
some incorrect runtime behaviour, and would crash when loading the field
using the Context::initial_aysnc_generator_prototype accessor when
attempting to cast the Undefined oddball to a JSObject.
BUG=chromium:771470, v8:5855
R=adamk@chromium.org, verwaest@chromium.org, gsathya@chromium.org
Change-Id: I13f2a518c59852bc77c2de1f2468a4eea457609e
Reviewed-on: https://chromium-review.googlesource.com/700261
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#48291}
The code in `AsmJsScanner::Next()` checks for both
end of input and parse error:
if (token_ == kEndOfInput || token_ == kParseError) {
return;
}
but until now the code in the parsing loop only checked
for `kEndOfInput`, resulting in an infinite loop on
`kParseError`.
R=bradnelson@chromium.org, mstarzinger@chromium.org
Bug: chromium:771428
Change-Id: I9170f090503590b3b9b949a0d00ab4daef85bf66
Reviewed-on: https://chromium-review.googlesource.com/699994
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48290}
In the process, also enable support for PACKED_DOUBLE_ELEMENTS arrays.
Change-Id: I16dd79276f1023e30b072d45216396533077f53c
Reviewed-on: https://chromium-review.googlesource.com/571006
Commit-Queue: Daniel Clifford <danno@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48289}
This CL speeds up a common pattern found in the React framework:
function f(a, b, c) { ... };
let f_bound = f.bind(this, 1);
let f_bound2 = f_bound(this, 2);
This CL yields roughly a 15x improvement for rebinding a bound function.
Change-Id: I4d8580a5bce422af411148bc6b3e4eb287fac9ce
Reviewed-on: https://chromium-review.googlesource.com/695206
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48283}
The Object.is builtin provides an entry point to the abstract operation
SameValue, which properly distinguishes -0 and 0, and also identifies
NaNs. Most of the time you don't need these, but rather just regular
strict equality, but when you do, Object.is(o, -0) is the most readable
way to check for minus zero.
This is for example used in Node.js by formatNumber to properly print -0
for negative zero. However since the builtin thus far implemented as C++
builtin and TurboFan didn't know anything about it, Node.js considering
to go with a more performant, less readable version (which also makes
assumptions about the input value) in
https://github.com/nodejs/node/pull/15726
until the performance of Object.is will be on par (so hopefully we can
go back to Object.is in Node 9).
This CL ports the baseline implementation of Object.is to CSA, which
is pretty straight-forward since SameValue is already available in
CodeStubAssembler, and inlines a few interesting cases into TurboFan,
i.e. comparing same SSA node, and checking for -0 and NaN explicitly.
On the micro-benchmarks we go from
testNumberIsMinusZero: 1000 ms.
testObjectIsMinusZero: 929 ms.
testObjectIsNaN: 954 ms.
testObjectIsSame: 793 ms.
testStrictEqualSame: 104 ms.
to
testNumberIsMinusZero: 89 ms.
testObjectIsMinusZero: 88 ms.
testObjectIsNaN: 88 ms.
testObjectIsSame: 86 ms.
testStrictEqualSame: 105 ms.
which is a nice 10x to 11x improvement and brings Object.is on par with
strict equality for most cases.
Drive-by-fix: Also refactor and optimize the SameValue check in the
CodeStubAssembler to avoid code bloat (by not inlining StrictEqual
into every user of SameValue, and also avoiding useless checks).
Bug: v8:6882
Change-Id: Ibffd8c36511f219fcce0d89ed4e1073f5d6c6344
Reviewed-on: https://chromium-review.googlesource.com/700254
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48275}
When atomic operations are used in loops, return the correct opcode length
for loop assignment.
Bug=v8:6842,v8:6532
Change-Id: I306db704d8a0baa5d98c05702360e6dfae11cbfa
Reviewed-on: https://chromium-review.googlesource.com/699561
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48273}
I'd like to make sure changes to microtask handling do not break debugging.
R=jarin@chromium.org
Change-Id: I983bd3340261e472b22b0d5b6cded60b64b19d38
Reviewed-on: https://chromium-review.googlesource.com/691715
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48270}
This makes sure that helper methods on the {TranslatedState} class stick
to the counting scheme used by {OptimizedFrame::Summarize} within the
stack-walker. Both now treat {kJavaScriptBuiltinContinuation} as real
JavaScript frames.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-770543
BUG=chromium:770543
Change-Id: Icda65a7efb487470d39ebf648767a488ebf2e5f1
Reviewed-on: https://chromium-review.googlesource.com/695123
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48264}
This makes sure the deoptimizer properly materializes heap objects, even
when the top-most frame happens to be a stub-frame. Without this step
the {arguments_marker} would leak into user-land and most likely be
treated as an undefined value.
R=jarin@chromium.org
TEST=mjsunit/regress/regress-crbug-769852
BUG=chromium:769852
Change-Id: I4ba17501c5d7e68d1f402b7c2cc5ccb0fb7bfb05
Reviewed-on: https://chromium-review.googlesource.com/691996
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48262}
Until now keyed accesses to properties with string or symbol keys were
only optimized properly while the IC was monomorphic and would go
megamorphic as soon as there's another receiver map, even if the name
was still the same (i.e. the same symbol or internalized string). This
was a weird performance-cliff, that'll hurt modern code especially
because for symbols you can only access them via keyed loads and stores.
This CL fixes the state machine inside the ICs to properly transition to
POLYMORPHIC state (and stay there) as long as the new name matches the
previously recorded name. The FeedbackVector and TurboFan were already
able to deal with this and didn't need any updates.
On the micro-benchmark from the tracking bug we go from
testStringMonomorphic: 429 ms.
testSymbolMonomorphic: 431 ms.
testStringPolymorphic: 429 ms.
testSymbolPolymorphic: 5621 ms.
to
testStringMonomorphic: 429 ms.
testSymbolMonomorphic: 429 ms.
testStringPolymorphic: 429 ms.
testSymbolPolymorphic: 430 ms.
effectively eliminating the overhead for symbols completely, and
yielding a 13.5x performance boost.
This also seems to yield a 1% improvement on the ARES6 ML benchmark,
because it eliminates the KEYED_LOAD_ICs for the Symbol.species lookups.
Bug: v8:6367, v8:6278, v8:6344
Change-Id: I879fe56387b4c56203c1ad8ef8cafb6cc4c32897
Reviewed-on: https://chromium-review.googlesource.com/695108
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48261}
The context is the following proposal to make JSON a subset of
JavaScript: https://github.com/tc39/proposal-json-superset
There’s interest in performing a side investigation to answer the
question of what would happen if we stopped treating U+2028 and U+2029
as `LineTerminator`s *entirely*. (Note that this is separate from the
proposal, which just changes how these characters are handled in
ECMAScript strings.) This is technically a breaking change, and IMHO it
would be wonderful if we could get away with it, but no one really has
any data on whether or not we could. Adding this use counter lets us get
that data.
BUG=v8:6827
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ia22e8db1634df4d3f965bec8e1cfa11cc7b5e9aa
Reviewed-on: https://chromium-review.googlesource.com/693155
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48260}
With --wasm-trace-memory, both compiled code and the interpreter will
output each memory load or store. This helps to debug miscompilations in
emscripten or in V8, like the referenced bug.
R=titzer@chromium.org
Bug: chromium:718858
Change-Id: I90704d164975b11c65677f86947ab102242d5153
Reviewed-on: https://chromium-review.googlesource.com/684316
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48255}
The TypedArray.prototype[Symbol.toStringTag] getter is currently the best (and
as far as I can tell only definitely side-effect free) way to check whether an
arbitrary object is a TypedArray - either generally TypedArray or a specific
one like Uint8Array. Using the getter is thus emerging as the general pattern
to detect TypedArrays, even Node.js now adapted it starting with
https://github.com/nodejs/node/pull/15663
for the isTypedArray and isUint8Array type checks in lib/internal/util/types.js
now.
The getter returns either the string with the TypedArray subclass name
(i.e. "Uint8Array") or undefined if the receiver is not a TypedArray.
This can be implemented with a simple elements kind dispatch, instead of
checking the instance type and then loading the class name from the
constructor, which requires a loop walking up the transition tree. This
CL ports the builtin to CSA and TurboFan, and changes the logic to a
simple elements kind check. On the micro-benchmark mentioned in the
referenced bug, the time goes from
testIsArrayBufferView: 565 ms.
testIsTypedArray: 2403 ms.
testIsUint8Array: 3847 ms.
to
testIsArrayBufferView: 566 ms.
testIsTypedArray: 965 ms.
testIsUint8Array: 965 ms.
which presents an up to 4x improvement.
Bug: v8:6874
Change-Id: I9c330b4529d9631df2f052acf023c6a4fae69611
Reviewed-on: https://chromium-review.googlesource.com/695021
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48254}
In JS to Wasm wrappers, arguments have to be converted from JavaScript's
representation to Wasm's representation. Because of property accessors, this can
result in JavaScript or even asm.js/Wasm code being run. We were previously
setting this flag before doing the parameter conversions, and if these
conversions triggered a Wasm property getter then we would try to set the flag
twice.
With this change, we wait until after all argument conversions are done to set
the flag.
Bug: chromium:769846
R=bradnelson@chromium.org
Change-Id: Ia4b56df45619dcad69f3750bb33cacfedcaeb5b2
Reviewed-on: https://chromium-review.googlesource.com/693414
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48244}
This reverts commit 1f99c66b56.
Reason for revert: Test timeouts on Win64 Debug: https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20debug/builds/19226
Original change's description:
> [wasm] always allocate memory when guard regions are needed
>
> When using trap handlers, memory references do not get any checks inserted. This
> means there is no check for a null memory as happens when the memory size is
> 0. Normally this would be correctly caught as an out of bounds access, since the
> low memory addresses are not normally mapped. However, if they were mapped for
> some reason, we would not catch the out of bounds access.
>
> The fix is to ensure WebAssembly instances always have a guard region even if
> the memory is size 0.
>
> Bug: chromium:769637
> Change-Id: I2d0f8c107563236c3780eb7746c2f820e319c65f
> Reviewed-on: https://chromium-review.googlesource.com/693137
> Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> Commit-Queue: Eric Holk <eholk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48240}
TBR=gdeepti@chromium.org,mtrofin@chromium.org,eholk@chromium.org
Change-Id: I4065b367c6cfffe8dd601b67cd53ad54759ae96a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:769637
Reviewed-on: https://chromium-review.googlesource.com/692918
Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48242}
based on the existing Number.parseInt.
Bug: v8:6791
Change-Id: I9169a4695807a3e435e343d239431ae7f6ccf2a1
Reviewed-on: https://chromium-review.googlesource.com/685990
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48241}
When using trap handlers, memory references do not get any checks inserted. This
means there is no check for a null memory as happens when the memory size is
0. Normally this would be correctly caught as an out of bounds access, since the
low memory addresses are not normally mapped. However, if they were mapped for
some reason, we would not catch the out of bounds access.
The fix is to ensure WebAssembly instances always have a guard region even if
the memory is size 0.
Bug: chromium:769637
Change-Id: I2d0f8c107563236c3780eb7746c2f820e319c65f
Reviewed-on: https://chromium-review.googlesource.com/693137
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48240}
We were unnecessarily storing everything as uint32_t, even though many items in
the preparsed scope data can be stored as uint8_t. This CL also adds an
(internal) API which abstracts away the actual data storing, so the backing
store can be made even more efficient (e.g., use only 1-3 bytes for some
uint32_t values, if they fit) without affecting other parts of the code.
BUG=v8:5516,chromium:762492
Change-Id: I7cd4d91dc11f87f8aec9c7584044a6f2a59b73ba
Reviewed-on: https://chromium-review.googlesource.com/684182
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48231}
Verify that both UTF-8 decoders (incremental and non-incremental one) match the
expectations.
Also cleanup / harden the UTF-8 handling code, as suggested in
https://chromium-review.googlesource.com/c/v8/v8/+/671020/ .
BUG=chromium:765608
Change-Id: I6344d62ca15b75ac8e333421c94c4aa35ab8190d
Reviewed-on: https://chromium-review.googlesource.com/681217
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48229}
We had dangling pointers by storing a raw pointer and then discarding
the unique_ptr holding it alive, and we had lots of redundant
information there.
This CL refactors the interface to take a format string and a variable
number of argument.
R=titzer@chromium.org
Change-Id: I8eb6ccd19d307e2477c97a3e5e7f537b5671a891
Reviewed-on: https://chromium-review.googlesource.com/690196
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48223}
Removes script() from CompilationInfo since it might not be created when
compiling from a background thread.
BUG=v8:5203
Change-Id: Ic36fd04cf4792336707b2d3715d47c59b6a97faf
Reviewed-on: https://chromium-review.googlesource.com/690299
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48220}
Merge better captures the upcoming usecase in the wasm native heap,
where allocating/freeing is moving the accounting of memory from
a free list to an allocated list and vice-versa - making 'Release'
an odd API when allocating.
Bug:
Change-Id: I9010959c91a1e8585eb06303ab06078132a03f60
Reviewed-on: https://chromium-review.googlesource.com/688004
Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48211}
The WasmContext struct introduced in this CL is used to store the
mem_size and mem_start address of the wasm memory. These variables can
be accessed at C++ level at graph build time (e.g., initialized during
instance building). When the GrowMemory runtime is invoked, the context
variables can be changed in the WasmContext at C++ level so that the
generated code will load the correct values.
This requires to insert a relocatable pointer only in the
JSToWasmWrapper (and in the other wasm entry points), the value is then
passed from function to function as an automatically added additional
parameter. The WasmContext is then dropped when creating an Interpreter
Entry or when invoking a JavaScript function. This removes the need of
patching the generated code at runtime (i.e., when the memory grows)
with respect to WASM_MEMORY_REFERENCE and WASM_MEMORY_SIZE_REFERENCE.
However, we still need to patch the code at instance build time to patch
the JSToWasmWrappers; in fact the address of the WasmContext is not
known during compilation, but only when the instance is built.
The WasmContext address is passed as the first parameter. This has the
advantage of not having to move the WasmContext around if the function
does not use many registers. This CL also changes the wasm calling
convention so that the first parameter register is different from the
return value register. The WasmContext is attached to every
WasmMemoryObject, to share the same context with multiple instances
sharing the same memory. Moreover, the nodes representing the
WasmContext variables are cached in the SSA environment, similarly to
other local variables that might change during execution. The nodes are
created when initializing the SSA environment and refreshed every time a
grow_memory or a function call happens, so that we are sure that they
always represent the correct mem_size and mem_start variables.
This CL also removes the WasmMemorySize runtime (since it's now possible
to directly retrieve mem_size from the context) and simplifies the
GrowMemory runtime (since every instance now has a memory_object).
R=ahaas@chromium.org,clemensh@chromium.org
CC=gdeepti@chromium.org
Change-Id: I3f058e641284f5a1bbbfc35a64c88da6ff08e240
Reviewed-on: https://chromium-review.googlesource.com/671008
Commit-Queue: Enrico Bacis <enricobacis@google.com>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48209}
Pair some stack ops so that they deal with an even numbers of registers, add
padding around profile entry calls, and delete some unused macro assembler code.
Bug: v8:6644
Change-Id: I5a5529f04738ba2a2fdb1b0d4ee93c567a3c504e
Reviewed-on: https://chromium-review.googlesource.com/686823
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/master@{#48205}
Note that this also makes it possible to move several classes
into the module-compiler.cc file and inline their implementations.
This also allows removing several uses of wasm-module.h from
other places in V8 that include wasm-objects.h.
R=yangguo@chromium.org,clemensh@chromium.org,ahaas@chromium.org
Bug:
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I303ee2bb49dc53c951d377a1b65699c1e0e91da7
Reviewed-on: https://chromium-review.googlesource.com/687494
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48204}
There are only very few custom compiled IC handlers left that go in there, and for each compiled handler we only have 1 cache hit on top25; maximally saving 60ms over 33s. Additionally we'll migrate the remaining handlers to data-driven handlers anyway. Let's try to remove this code.
Bug:
Change-Id: Ib874cc498015046a3ff67c83ea8b10b3c4eb7d0f
Reviewed-on: https://chromium-review.googlesource.com/668409
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48201}
ZoneList still used List as a base class, so this CL merges the two
classes together. We also remove unused functions in List and ZoneList.
We keep the inline header but move it to src/zone/zone-list-inl.h. The
includes that use this header are still quite tangled, but we can fix
that later.
Bug: v8:6333
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ia809813834b2328ff616623f8a843812a1eb42a7
Reviewed-on: https://chromium-review.googlesource.com/681658
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48200}
This is a reland of 9d3c4b4b91
Original change's description:
> [turbofan] Implement lowering of {JSCreateClosure}.
>
> This adds support for inline allocation of {JSFunction} objects as part
> of closures instantiation for {JSCreateClosure} nodes. The lowering is
> limited to instantiation sites which have already seen more than one
> previous instantiation, this avoids the need to increment the respective
> counter.
>
> R=jarin@chromium.org
>
> Change-Id: I462c557453fe58bc5f09020a3d5ebdf11c2ea68b
> Reviewed-on: https://chromium-review.googlesource.com/594287
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48176}
Change-Id: I3ec3880bea89798a34a3878e6122b95db1014151
Reviewed-on: https://chromium-review.googlesource.com/686834
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48198}
The members of HandleScopeImplementer are copied with memcpy when
the isolate is transferred to another thread. List contained some
primitives which allowed us to manually free the backing store, which
was needed in order to ensure that threads would not hold on to
old pointers and use them later. With std::vector, we can't do that.
Here we change the HandleScopeImplementer to instead use a custom
structure DetachableVector, which contains a std::vector but allows
manual detaching and freeing of the backing store. This allows us to
maintain the old behavior.
Bug: v8:6333
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I6361d161cdb19878ba19ed51d6ba2fae99e8cdc0
Reviewed-on: https://chromium-review.googlesource.com/660125
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48197}
We used to only mark top-level SFIs with the 'deserialized' bit.
Now we do it for every SFI that has cached code. This is the
first step to surface caching information in the future.
R=cbruni@chromium.org
Bug: chromium:769166
Change-Id: I12f21511419ce54fd07a2cc277a65866660c366a
Reviewed-on: https://chromium-review.googlesource.com/686715
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48184}
There was an issue with passing float32 parameters, if the value was
spilled on the stack and passed as stack parameter.
First, we sometimes reduced the stack pointer by 8 bytes instead of 4,
and second, there was a mismatch between movsd and movss.
R=titzer@chromium.org
Bug: chromium:718858
Change-Id: Ia884df369ddd95adeff3733f9715f589996f0b65
Also-By: ahaas@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/684738
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48181}
This reverts commit 9d3c4b4b91.
Reason for revert: Breaks cctest/test-debug/NoBreakWhenBootstrapping in no-snap mode.
Original change's description:
> [turbofan] Implement lowering of {JSCreateClosure}.
>
> This adds support for inline allocation of {JSFunction} objects as part
> of closures instantiation for {JSCreateClosure} nodes. The lowering is
> limited to instantiation sites which have already seen more than one
> previous instantiation, this avoids the need to increment the respective
> counter.
>
> R=jarin@chromium.org
>
> Change-Id: I462c557453fe58bc5f09020a3d5ebdf11c2ea68b
> Reviewed-on: https://chromium-review.googlesource.com/594287
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48176}
TBR=mstarzinger@chromium.org,jarin@chromium.org
Change-Id: Id52281f6a3c0b7c2603053ecf002777d5b0d6f1f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/686534
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48178}
This adds support for inline allocation of {JSFunction} objects as part
of closures instantiation for {JSCreateClosure} nodes. The lowering is
limited to instantiation sites which have already seen more than one
previous instantiation, this avoids the need to increment the respective
counter.
R=jarin@chromium.org
Change-Id: I462c557453fe58bc5f09020a3d5ebdf11c2ea68b
Reviewed-on: https://chromium-review.googlesource.com/594287
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48176}
- Move things to conversions.cc that don't need to be in headers
- Turn InternalStringToInt into a subclassable helper class
so we can re-use it for BigInt.parseInt
- Bonus: play a round of IWYU with all the .cc files who thought that
#including conversions-inl.h would give them nice Unicode things
Bug: v8:6791
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I64022543a9b83002e2b78416c7e87b40a1a016e6
Reviewed-on: https://chromium-review.googlesource.com/673725
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48174}
This CL teaches the respective bytecode handlers and standalone stubs
about BigInts, and collects "kBigInt" feedback for them. However,
Turbofan does not yet care about such feedback, so it is simply converted
to "any" for now (making TF emit stub calls for BigInt operations).
Bug: v8:6791
Change-Id: I6440c108ccd79058d77adc2a6041251db9d5f81d
Reviewed-on: https://chromium-review.googlesource.com/683758
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48173}
This fixes the signature of "Math.abs" from "(signed) -> signed" to
"(signed) -> unsigned" and hence fixes cases where the absolute value
would overflow the range of signed 32-bit values. This is in sync with
spec erratas (and ECMAScript semantics).
Note that this also switches the underlying implementation of the above
absolute value function to a branch-free version.
R=clemensh@chromium.org
TEST=mjsunit/regress/regress-6838-3
BUG=v8:6838
Change-Id: Ib13b7ecd336ae386cbde7c574e727bf52f841e00
Reviewed-on: https://chromium-review.googlesource.com/684181
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48169}
Follow up to https://chromium-review.googlesource.com/671020
We still didn't return the correct amount of invalid characters, according to
the Encoding spec ( https://encoding.spec.whatwg.org/#utf-8-decoder ), when we
saw a byte sequence which was as start of an overlong / invalid sequence, but
there weren't enough continuation bytes.
A more rigorous test will follow in
https://chromium-review.googlesource.com/c/v8/v8/+/681217
BUG=chromium:765608
Change-Id: I535670edc14d3bae144e5a9ca373f12eec78a934
Reviewed-on: https://chromium-review.googlesource.com/681674
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48165}
This is a reland of 629406d1e9
Original change's description:
> [snapshot] include version string in the startup snapshot.
>
> This is to easier diagnose build issues involving the snapshot.
> Sample error message for mismatching snapshot:
>
> #
> # Fatal error in ../../src/snapshot/snapshot-common.cc, line 286
> # Version mismatch between V8 binary and snapshot.
> # V8 binary version: 6.3.1 (candidate)
> # Snapshot version: 6.3.0 (candidate)
> # The snapshot consists of 2820444 bytes and contains 1 contexts.
> #
>
>
> R=machenbach@chromium.org
>
> Bug: chromium:764327
> Change-Id: Icdc7aeac77819b113985b424feda814a072d5406
> Reviewed-on: https://chromium-review.googlesource.com/684295
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48161}
Bug: chromium:764327
Change-Id: I3721689824e0a6909eede86d0829dc258ae40c4d
Reviewed-on: https://chromium-review.googlesource.com/684494
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48164}
- Add kProduceExhaustiveCodeCache to v8::ScriptCompiler::CompileOptions
to request eager compilation to add as much as possible to the code
cache for the script.
- Repurpose ParseInfo::kLazy flag.
- Remove ParseInfo::kDebug flag.
- Remove --serialize-toplevel as it has become obsolete.
R=marja@chromium.org
Bug: chromium:768705
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ife14f7a1d1c02e525f0b9dbfd2452013d67c7167
Reviewed-on: https://chromium-review.googlesource.com/684019
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48160}
In the test-run-wasm and test-run-wasm-64 cctests it is not possible to
call runtime functions. To test traps in these cctests we therefore
replace the runtime call with a call to a c-callback, followed by a
return. This CL fixes the problem that the return did not clean up stack
parameters.
This CL unblocks
https://chromium-review.googlesource.com/c/v8/v8/+/671008. Originally I
wanted to mitigate the problem in that CL by defining an additional
parameter register for arm. However, adding additional parameter
registers lets other tests fail.
R=titzer@chromium.org, rodolph.perfetta@arm.comCC=enricobacis@google.com
Bug: v8:6858
Change-Id: Ia8de73b70a0677ca4d379ed5b16272faee92a78d
Reviewed-on: https://chromium-review.googlesource.com/684017
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48158}
This caused trouble for my downstream CI tests, even though it builds
successfully in the canonical v8 tree. To be investigated properly
later.
Bug: chromium:746958
Change-Id: I180a5ecc51051e4eb6617180ccba787ff80bcf45
Reviewed-on: https://chromium-review.googlesource.com/682695
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@opera.com>
Cr-Commit-Position: refs/heads/master@{#48151}
This is a second attempt at landing CL 644866 which was reverted by
CL 667019.
Extends the current implementation of WASM exceptions to be able to
throw exceptions with values (not just tags).
A JS typed (uint_16) array is used to hold the thrown values. This
allows all WASM types to be stored (i32, i64, f32, and f64) as well as
be inspected in JS.
The previous CL was reverted because the WASM compiler made calls to
run time functions with tagged objects, which must not be done. To fix
this, all run time calls use the thread-level isolate to hold the
exception being processed.
Bug: v8:6577
Change-Id: I4b1ef7e2847b71a2fab8e9934a0531057db9de63
Reviewed-on: https://chromium-review.googlesource.com/677056
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48148}
There is no jumbo_executable target atm, so split the cctest v8_executable
target into cctest and cctest_sources.
Bug: chromium:746958
Change-Id: Iec0956234d026039c4d29921170dd2f0955222ca
Reviewed-on: https://chromium-review.googlesource.com/680575
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@opera.com>
Cr-Commit-Position: refs/heads/master@{#48147}
Previously, we would blindly register new handler data, leading to us leaking
the old handler data. This meant we could then end up with overlapping handler
data where the instruction offset and landing pads didn't line up right.
Bug: v8:6841
Change-Id: Iedcd75925b8d9d59c8f9accf288cae954fdc568f
Reviewed-on: https://chromium-review.googlesource.com/677632
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48144}
This fixes the signatures of "Math.ceil", "Math.floor" and "Math.sqrt"
from "(float?) -> float" to "(float?) -> floatish" which avoids using a
resulting float value without coercing the value via explicit "fround"
annotations. This ensures proper ECMAScript semantics are maintained.
R=clemensh@chromium.org
TEST=mjsunit/regress/regress-6838-2
BUG=v8:6838
Change-Id: Ib5821641265bc862184adb270e8dbf8c703fdfb0
Reviewed-on: https://chromium-review.googlesource.com/681694
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48142}
This is a reland of ec952aaa68.
Included is a fix that ensures that top_on_previous_step_ is cleared when we
release a page.
Original change's description:
> Reland "[profiler] proper observation of old space inline allocations"
>
> This is a reland of 672a41c3ca
> Original change's description:
> > [profiler] proper observation of old space inline allocations
> >
> > Bug: chromium:633920
> > Change-Id: I9a2f4a89f6b9c0f63cb3b166b06a88a12f0a203c
> > Reviewed-on: https://chromium-review.googlesource.com/631696
> > Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48043}
>
> Bug: chromium:633920
> Change-Id: I6fe743d31b8ff26f3858488d4c014c62d3c85add
> Reviewed-on: https://chromium-review.googlesource.com/671127
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
> Cr-Commit-Position: refs/heads/master@{#48085}
Bug: chromium:633920
Change-Id: I8a0dcc4eaffc1f1d3ac5b3f8d344001cdae36606
Reviewed-on: https://chromium-review.googlesource.com/677407
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
Cr-Commit-Position: refs/heads/master@{#48141}
When inlining based on SharedFunctionInfo rather than based on concrete
JSFunction, we weren't able to properly optimize array, object and
regexp literals inside the inlinee, because we didn't know the concrete
FeedbackVector for the inlinee inside JSCreateLowering. This was because
JSCreateLowering wasn't properly updated after the literals moved to the
FeedbackVector. Now with this CL we also have the VectorSlotPair on the
literal creation operators, just like we do for property accesses and
calls, and are thus able to always access the appropriate FeedbackVector
and optimize the literal creation.
The impact is illustrated by the micro-benchmark on the tracking bug,
which goes from
createEmptyArrayLiteral: 1846 ms.
createShallowArrayLiteral: 1868 ms.
createShallowObjectLiteral: 2246 ms.
to
createEmptyArrayLiteral: 1175 ms.
createShallowArrayLiteral: 1187 ms.
createShallowObjectLiteral: 1195 ms.
with this CL, so up to 2x faster now.
Drive-by-fix: Also remove the unused CreateEmptyObjectLiteral builtin
and cleanup the names of the other builtins to be consistent with the
names of the TurboFan operators and Ignition bytecodes.
Bug: v8:6856
Change-Id: I453828d019b27c9aa1344edac0dd84e91a457097
Reviewed-on: https://chromium-review.googlesource.com/680656
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48140}
This fixes the signature of "Math.min" and "Math.max" for integer values
from "(int, int...) -> signed" to "(signed, signed..) -> signed" which
properly distinguishes signed from unsigned values now. This is in sync
with the spec errata (and ECMAScript semantics).
R=clemensh@chromium.org
TEST=mjsunit/regress/regress-6838-1
BUG=v8:6838
Change-Id: Id72836513dd86e93472a22cf1ac2e2d382ed4f23
Reviewed-on: https://chromium-review.googlesource.com/681357
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48139}
Use the (D)CHECK_{EQ,NE,GT,...} macros instead of (D)CHECK with an
embedded comparison. This gives better error messages and also does the
right comparison for signed/unsigned mismatches.
This will allow us to reenable the readability/check cpplint check.
R=yangguo@chromium.org
Bug: v8:6837
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I88e5afea1ad0fdf23a81b380e64ff356bbc20112
Reviewed-on: https://chromium-review.googlesource.com/681374
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48138}
Use the (D)CHECK_{EQ,NE,GT,...} macros instead of (D)CHECK with an
embedded comparison. This gives better error messages and also does the
right comparison for signed/unsigned mismatches.
This will allow us to reenable the readability/check cpplint check.
R=ulan@chromium.org
Bug: v8:6837
Change-Id: I8d900f3c703dea6ee3bcc225a1d2754e91666b9d
Reviewed-on: https://chromium-review.googlesource.com/671047
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48136}
Use the (D)CHECK_{EQ,NE,GT,...} macros instead of (D)CHECK with an
embedded comparison. This gives better error messages and also does the
right comparison for signed/unsigned mismatches.
This will allow us to reenable the readability/check cpplint check.
R=jarin@chromium.org
Bug: v8:6837
Change-Id: I712580c2a4326e06ee3d6d0eb4ff8c7d24f5fdb9
Reviewed-on: https://chromium-review.googlesource.com/671227
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48135}
Track whether the async arrow func parameter list was simple or not; the
information is already there, we just didn't pipe it through correctly. It's
needed by PreParser so that it can create the correct Scope structure.
Implementation notes:
- I could've used async_classifier for transmitting the "is_simple" bit, but I
made it explicit (it would be unnecessary to use ExpressionClassifier for
this, as we're not classifying any expressions) instead.
- I'm also moving work (setting parameter_list.is_simple) from Parser to
ParserBase, and adding a DCHECK in Parser to assert that the work was indeed
already done.
BUG=v8:5516,chromium:765532
Change-Id: Iacf91b150d1b57996544b5e64baa7d91ac134445
Reviewed-on: https://chromium-review.googlesource.com/674695
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48132}
Tagged templates were previously desugared during parsing using some
combination of runtime support written in JavaScript and C++, which
prevented some optimizations from happening, namely the constant folding
of the template object in TurboFan optimized code. This CL adds a new
bytecode GetTemplateObject (with a corresponding GetTemplateObject AST
node), which represents the abstract operation in the ES6 specification
and allows TurboFan to simply constant-fold template objects at compile
time (which is explicitly supported by the specification).
This also pays down some technical debt by removing the template.js
runtime support and therefore should reduce the size of the native
context (snapshot) a bit.
With this change in-place the ES6 version microbenchmark in the
referenced tracking bug is now faster than the transpiled Babel
code, it goes from
templateStringTagES5: 4552 ms.
templateStringTagES6: 14185 ms.
templateStringTagBabel: 7626 ms.
to
templateStringTagES5: 4515 ms.
templateStringTagES6: 7491 ms.
templateStringTagBabel: 7639 ms.
which corresponds to a solid 45% reduction in execution time. With some
further optimizations the ES6 version should be able to outperform the
ES5 version. This micro-benchmark should be fairly representative of the
six-speed-templatestringtag-es6 benchmark, and as such that benchmark
should also improve by around 50%.
Bug: v8:6819,v8:6820
Tbr: mlippautz@chromium.org
Change-Id: I821085e3794717fc7f52b5c306fcb93ba03345dc
Reviewed-on: https://chromium-review.googlesource.com/677462
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48126}
- Moves GetRandomMmapAddr from platform to v8::internal allocation
primitives, in preparation for delegating this to the embedder.
- Adds hint parameters to OS functions that used to use this function.
Bug: chromium:756050
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Iad72e6eac9c08a3e22c2cd2b2905623b8e514ae0
Reviewed-on: https://chromium-review.googlesource.com/677777
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48124}
TurboAssembler::CallRecordWriteStub contains info that could be used to
conditionally skip generational write barrier or skip saving float-point
registers. This commits uses those info in RecordWrite stub.
Bug: chromium:749486
Change-Id: I41c9a593473e1f8863a09887fd2ce917f1d4fb3b
Reviewed-on: https://chromium-review.googlesource.com/672527
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Albert Mingkun Yang <albertnetymk@google.com>
Cr-Commit-Position: refs/heads/master@{#48123}
This change enables moving the WasmToJSWrapper off the GCed heap
R=bradnelson@chromium.org,mtrofin@chromium.org,clemensh@chromium.org
Bug:
Change-Id: I1ea8810fa7b71bcb2a80a1390742db64872c5bb1
Reviewed-on: https://chromium-review.googlesource.com/665977
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48118}
This is a reland of c6b153fd69
Original change's description:
> [cctest] Add fuzz tests for generating parallel moves.
>
> These new tests are somewhat similar to the existing gap resolver tests except
> we use the code generator and eventually run the generated code. The main idea
> is to cover cases that are difficult to hit, such as move from/to slots which
> are out of range of loads and stores, but may happen nonetheless.
>
> At this time, the tests only make sure the code generator actually generated
> some code, and that this code runs. In the future, it would be great to also
> check that the moves were actually performed.
>
> Bug: v8:6553
> Change-Id: I089a25fa05b3a20649658bb8952926ab11f91d68
> Reviewed-on: https://chromium-review.googlesource.com/574850
> Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47733}
Bug: v8:6553
Change-Id: Ia3eac9d7e6a23e2f6fea839b71d460cb7ad6ff6e
Reviewed-on: https://chromium-review.googlesource.com/645868
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#48115}
This is a reland of f2cd10db14
Original change's description:
> Reland "[Memory] Move VirtualMemory out of base:: platform."
>
> This is a reland of 4dd293d922
> Original change's description:
> > [Memory] Move VirtualMemory out of base:: platform.
> >
> > - Moves base::VirtualMemory to v8::internal::VirtualMemory.
> > - Makes VirtualMemory platform-independent by moving internals to new
> > OS:: static methods, for each platform.
> >
> > This will make it easier to delegate memory management in VirtualMemory
> > to V8::Platform, so that embedders like Blink can override it. We can't
> > depend on V8::Platform in base/platform.
> >
> > Bug: chromium:756050
> > Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> > Change-Id: Iadfe230b6850bd917727a373f277afded9883adf
> > Reviewed-on: https://chromium-review.googlesource.com/653214
> > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48048}
>
> Bug: chromium:756050
> Change-Id: Ib492c7c69f1833be127a571808301e96b84b8aa2
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Reviewed-on: https://chromium-review.googlesource.com/671125
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48084}
Bug: chromium:756050
Change-Id: Ie596730b5cefc38137cab7fc1f76613f5af7b825
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/675283
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48113}
In the current implementation, compilation would fail because
operator<< is not defined for enum classes. For others, the compiler
finds more than one operator<<, so it fails because it's ambiguous.
This CL fixes this by printing the integer value for enums, uses the
operator<< for all values that support it, and prints "<unprintable>"
otherwise.
Also, lots of unit tests.
R=ishell@chromium.org
Bug: v8:6837
Change-Id: I895ed226672aa07213f9605e094b87af186ec2e4
Reviewed-on: https://chromium-review.googlesource.com/671016
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48110}
And add some tests for (seemingly) previously uncovered cases.
The additional check for unreachable code is not needed any more, since
polymorphic stack values get assigned a specific type on their first
use or validation anyway. Hence the first entry in the br_table will
assign specific types to all polymorphic stack values, and type checking
will fail if later entries do not match.
R=rossberg@chromium.orgCC=titzer@chromium.org
Change-Id: I1d0f91f927a2aa5186f874112e91ebffa1f1b3a7
Reviewed-on: https://chromium-review.googlesource.com/675405
Reviewed-by: Andreas Rossberg <rossberg@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48109}
This fix is two-fold:
1) Incremental UTF-8 decoding: Unify incorrect UTF-8 handling between V8 and
Blink.
Incremental UTF-8 decoding used to allow some overlong sequences / invalid code
points which Blink treated as errors. This caused the decoder and the Blink
UTF-8 decoder to produce a different number of bytes, resulting in random
failures when scripts were streamed (especially, this was detected by the
skipping inner functions feature which adds CHECKs against expected function
positions).
2) Non-incremental UTF-8 decoding: return the correct amount of invalid characters.
According to the encoding spec ( https://encoding.spec.whatwg.org/#utf-8-decoder
), the first byte of an overlong sequence / invalid code point generates an
invalid character, and the rest of the bytes are not processed (i.e., pushed
back to the byte stream). When they're handled, they will look like lonely
continuation bytes, and will generate an invalid character each.
As a result, an overlong 4-byte sequence should generate 4 invalid characters
(not 1).
This is a potentially breaking change, since the (non-incremental) UTF-8
decoding is exposed via the API (String::NewFromUtf8). The behavioral difference
happens when the client is passing in invalid UTF-8 (containing overlong /
surrogate sequences).
However, afaict, this doesn't change the semantics of any JavaScript program:
according to the ECMAScript spec, the program is a sequence of Unicode code
points, and there's no way to invoke the UTF-8 decoding functionalities from
inside JavaScript. Though, this changes the behavior of d8 when decoding source
files which are invalid UTF-8.
This doesn't change anything related to URI decoding (it already throws
exceptions for overlong sequences / invalid code points).
BUG: chromium:765608, chromium:758236, v8:5516
Bug:
Change-Id: Ib029f6a8e87186794b092e4e8af32d01cee3ada0
Reviewed-on: https://chromium-review.googlesource.com/671020
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48105}
By adding a per test source file namespace, we can avoid a lot of
symbol collisions in jumbo builds.
While we're at it, let's remove some "using" statements that also
cause trouble.
Bug: chromium:746958
Change-Id: I6f8a723e1ba5905888638e0687b23193f3f012ca
Reviewed-on: https://chromium-review.googlesource.com/676803
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@opera.com>
Cr-Commit-Position: refs/heads/master@{#48102}
Memory instantiate on initialize should always patch memory
references. If memory references are not patched for no initial
memory, on subsequent calls to grow_memory in wasm functions for
instances that share a module, the references will be patched
without resetting cloned compiled values to their correct initial
values.
BUG=chromium:763439
Change-Id: I666439332379b02aa344e99d61ef3dc88ab86cc8
Reviewed-on: https://chromium-review.googlesource.com/674707
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48097}
Along with BigInt.prototype. Their functions only have skeleton
implementations. The purpose of this change is to make it easier
to gradually increase test coverage (e.g. for toString(radix)).
Of course this is still behind the --harmony-bigint flag.
Bug: v8:6791
Change-Id: Ic307fd9165c56ac782fba18d648ce893daaa718f
Reviewed-on: https://chromium-review.googlesource.com/671209
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48094}
There is no support to emulate atomic WASM operations on big-endian
platforms, since this would require bit swapping as a part of atomic
operations. Therefore, cctest/test-run-wasm-atomics/* will be skipped.
TEST=cctest/test-run-wasm-atomics/*
BUG=
Change-Id: I1a8b085f816f615011788092e6fc8a8390678382
Reviewed-on: https://chromium-review.googlesource.com/671010
Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com>
Cr-Commit-Position: refs/heads/master@{#48093}
This fixes a few leftovers where we use WASM_EXEC_TEST, but then
unconditionally execute the compiled code, and also changes more tests
to use WASM_EXEC_TEST, hence run in both the interpreter and compiled
code.
Once we have land the baseline compiler, those tests will also execute
in baseline compilation mode.
R=ahaas@chromium.org
Bug: v8:6600
Change-Id: I79598df21a7538934306e01ca6593f05afe19ed3
Reviewed-on: https://chromium-review.googlesource.com/672528
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48091}
This reverts commit f2cd10db14.
Reason for revert: Blocks the roll https://chromium-review.googlesource.com/c/chromium/src/+/674623
Original change's description:
> Reland "[Memory] Move VirtualMemory out of base:: platform."
>
> This is a reland of 4dd293d922
> Original change's description:
> > [Memory] Move VirtualMemory out of base:: platform.
> >
> > - Moves base::VirtualMemory to v8::internal::VirtualMemory.
> > - Makes VirtualMemory platform-independent by moving internals to new
> > OS:: static methods, for each platform.
> >
> > This will make it easier to delegate memory management in VirtualMemory
> > to V8::Platform, so that embedders like Blink can override it. We can't
> > depend on V8::Platform in base/platform.
> >
> > Bug: chromium:756050
> > Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> > Change-Id: Iadfe230b6850bd917727a373f277afded9883adf
> > Reviewed-on: https://chromium-review.googlesource.com/653214
> > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48048}
>
> Bug: chromium:756050
> Change-Id: Ib492c7c69f1833be127a571808301e96b84b8aa2
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Reviewed-on: https://chromium-review.googlesource.com/671125
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48084}
TBR=bbudge@chromium.org,ulan@chromium.org,hpayer@chromium.org,mlippautz@chromium.org,scottmg@chromium.org
Change-Id: I04176d77ca9ad8315b0e1bb2b21f40f2c8ab9536
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:756050
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/674843
Reviewed-by: Michael Hablich <hablich@chromium.org>
Commit-Queue: Michael Hablich <hablich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48088}
This is a reland of 4dd293d922
Original change's description:
> [Memory] Move VirtualMemory out of base:: platform.
>
> - Moves base::VirtualMemory to v8::internal::VirtualMemory.
> - Makes VirtualMemory platform-independent by moving internals to new
> OS:: static methods, for each platform.
>
> This will make it easier to delegate memory management in VirtualMemory
> to V8::Platform, so that embedders like Blink can override it. We can't
> depend on V8::Platform in base/platform.
>
> Bug: chromium:756050
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Change-Id: Iadfe230b6850bd917727a373f277afded9883adf
> Reviewed-on: https://chromium-review.googlesource.com/653214
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48048}
Bug: chromium:756050
Change-Id: Ib492c7c69f1833be127a571808301e96b84b8aa2
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/671125
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48084}
Use the (D)CHECK_{EQ,NE,GT,...} macros instead of (D)CHECK with an
embedded comparison. This gives better error messages and also does the
right comparison for signed/unsigned mismatches.
This will allow us to reenable the readability/check cpplint check.
R=ahaas@chromium.org
Bug: v8:6837
Change-Id: Ic8966dfeacf02b2684eeef23fde99ec2be4ed81e
Reviewed-on: https://chromium-review.googlesource.com/671364
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48080}
Removes
- SequentialMarkingDeque
- The ability to handle marking deque overflow
- BlackToGrey transitions
We switched to a different marking work list on M61 that fails
in OOM upon failing to allocate Segments used in the work list.
Bug: chromium:758570
Change-Id: I66e2ab912271bf84b085dccc9b4bdd96076b64fb
Reviewed-on: https://chromium-review.googlesource.com/632676
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48078}
This is primarily to aid in testing the Wasm out of bounds trap handler. We
keep track of how many faults have been recovered by the Wasm trap handler. This
count is exposed to JavaScript through a testing-only runtime function. This
allows tests to verify whether the trap handler is actually running.
Bug: v8:5277
Change-Id: Ie8037a36d84eb08166c6e40c7225d912683d5786
Reviewed-on: https://chromium-review.googlesource.com/665968
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48076}
The bug occurred when we detected an erroneous char late, and put the last
character in a chunk into the "incomplete char" buffer. It was not correctly
retrieved when seeking.
BUG=v8:6836
Change-Id: I8ca946dfdb39244c5ca0bdcebe047047010b3a07
Reviewed-on: https://chromium-review.googlesource.com/670729
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48066}
This reverts commit 4dd293d922.
Reason for revert: Blocks roll: https://chromium-review.googlesource.com/c/chromium/src/+/669785
Original change's description:
> [Memory] Move VirtualMemory out of base:: platform.
>
> - Moves base::VirtualMemory to v8::internal::VirtualMemory.
> - Makes VirtualMemory platform-independent by moving internals to new
> OS:: static methods, for each platform.
>
> This will make it easier to delegate memory management in VirtualMemory
> to V8::Platform, so that embedders like Blink can override it. We can't
> depend on V8::Platform in base/platform.
>
> Bug: chromium:756050
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Change-Id: Iadfe230b6850bd917727a373f277afded9883adf
> Reviewed-on: https://chromium-review.googlesource.com/653214
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48048}
TBR=bbudge@chromium.org,ulan@chromium.org,hpayer@chromium.org,mlippautz@chromium.org,scottmg@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: chromium:756050
Change-Id: Ice2618ef72950e1b64c31434a239c626aa5e5970
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/670843
Reviewed-by: Michael Hablich <hablich@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Hablich <hablich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48062}
When using Lockers and Unlockers it is possible to create a
scenario where multiple threads point to the same optimized
code object. When that happens, if one of the threads triggers
deoptimization, then the stack replacement needs to happen in
the stacks of all threads.
With this CL, the deoptimizer visits all threads to do so.
The CL also adds three tests where V8 used to crash due to this
issue.
Bug: v8:6563
Change-Id: I74e9af472d4833aa8d13e579df45133791f6a503
Reviewed-on: https://chromium-review.googlesource.com/670783
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Cr-Commit-Position: refs/heads/master@{#48060}
This reverts commit ee5c31f335.
Reason for revert: Fixed compiler failure
Original change's description:
> Revert "[wasm] A simple allocator datastructure for off-the heap"
>
> This reverts commit 110d9ab005.
>
> Reason for revert: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug%20builder/builds/26607
>
> Surprising we're seeing a failure on Linux 64 *after* CQ. Is the compiler there different?
>
> Original change's description:
> > [wasm] A simple allocator datastructure for off-the heap
> >
> > We'll use this allocator in a follow-up CL to:
> > - allocate speculative sizes of memory for a module that's being
> > compiled (e.g. 2*size of wasm code).
> > - each module will own such a sub-pool, and then use it to allocate
> > contiguous chunks of memory for code.
> >
> > The underlying assumptions for the chosen allocation strategy is that:
> > - the allocation granularity for pools is 1 page, so that no one page
> > is owned by more than one wasm module
> > - typical pool sizes (given module sizes) are multiple pages.
> > - modules and module instances are typically few and long lived. Typically,
> > we expect one module and one instance.
> >
> > This means we shouldn't expect fragmentations that lead to code being
> > non-allocatable, or prohibitively many ranges.
> >
> > The data structure just manages ranges of addresses. Virtual memory management
> > will be separate, as part of the responsibility of a "WasmHeap"
> > that will be introduced in the future. So will concurrency control.
> >
> > Bug:
> > Change-Id: Id99f46d10c25553b013054d994760f3c2a737c39
> > Reviewed-on: https://chromium-review.googlesource.com/669296
> > Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
> > Reviewed-by: Eric Holk <eholk@chromium.org>
> > Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#48053}
>
> TBR=bradnelson@chromium.org,mtrofin@chromium.org,eholk@chromium.org
>
> Change-Id: Id82fa341b77624e4971f24c4757a9a666a65930c
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/670141
> Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48054}
TBR=bradnelson@chromium.org,mtrofin@chromium.org,eholk@chromium.org
Change-Id: Ib6a7a3e6098d2689e60cdca85ec77e57e5295e48
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/670142
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48055}
This reverts commit 110d9ab005.
Reason for revert: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug%20builder/builds/26607
Surprising we're seeing a failure on Linux 64 *after* CQ. Is the compiler there different?
Original change's description:
> [wasm] A simple allocator datastructure for off-the heap
>
> We'll use this allocator in a follow-up CL to:
> - allocate speculative sizes of memory for a module that's being
> compiled (e.g. 2*size of wasm code).
> - each module will own such a sub-pool, and then use it to allocate
> contiguous chunks of memory for code.
>
> The underlying assumptions for the chosen allocation strategy is that:
> - the allocation granularity for pools is 1 page, so that no one page
> is owned by more than one wasm module
> - typical pool sizes (given module sizes) are multiple pages.
> - modules and module instances are typically few and long lived. Typically,
> we expect one module and one instance.
>
> This means we shouldn't expect fragmentations that lead to code being
> non-allocatable, or prohibitively many ranges.
>
> The data structure just manages ranges of addresses. Virtual memory management
> will be separate, as part of the responsibility of a "WasmHeap"
> that will be introduced in the future. So will concurrency control.
>
> Bug:
> Change-Id: Id99f46d10c25553b013054d994760f3c2a737c39
> Reviewed-on: https://chromium-review.googlesource.com/669296
> Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
> Reviewed-by: Eric Holk <eholk@chromium.org>
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48053}
TBR=bradnelson@chromium.org,mtrofin@chromium.org,eholk@chromium.org
Change-Id: Id82fa341b77624e4971f24c4757a9a666a65930c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/670141
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48054}
We'll use this allocator in a follow-up CL to:
- allocate speculative sizes of memory for a module that's being
compiled (e.g. 2*size of wasm code).
- each module will own such a sub-pool, and then use it to allocate
contiguous chunks of memory for code.
The underlying assumptions for the chosen allocation strategy is that:
- the allocation granularity for pools is 1 page, so that no one page
is owned by more than one wasm module
- typical pool sizes (given module sizes) are multiple pages.
- modules and module instances are typically few and long lived. Typically,
we expect one module and one instance.
This means we shouldn't expect fragmentations that lead to code being
non-allocatable, or prohibitively many ranges.
The data structure just manages ranges of addresses. Virtual memory management
will be separate, as part of the responsibility of a "WasmHeap"
that will be introduced in the future. So will concurrency control.
Bug:
Change-Id: Id99f46d10c25553b013054d994760f3c2a737c39
Reviewed-on: https://chromium-review.googlesource.com/669296
Commit-Queue: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48053}
This reverts commit 7b5a40222e.
Reason for revert: GC stress-test failures exposed by 7742e534a8https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/15110/steps/Mjsunit/logs/exceptions
Original change's description:
> Add capability of throwing values in WASM
>
> Extends the current implementation of WASM exceptions to be able to
> throw exceptions with values (not just tags).
>
> An JS typed array (uint_16) is used to hold thrown values, so that the
> thrown values can be inspected in JS.
>
> Bug: v8:6577
> Change-Id: I1007e79ceaffd64386b62562919cfbb920fc10c5
> Reviewed-on: https://chromium-review.googlesource.com/633866
> Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Eric Holk <eholk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48001}
TBR=bbudge@chromium.org,mtrofin@chromium.org,eholk@chromium.org,clemensh@chromium.org,kschimpf@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:6577
Change-Id: I8f545183c2d2abb1bf4a0b3ee23379f3754ffd55
Reviewed-on: https://chromium-review.googlesource.com/667019
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48050}
This reverts commit c87f8954cc.
Reason for revert: LazyDeoptimizationMultithread failing.
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN%20-%20concurrent%20marking/builds/1876/steps/Bisect%20c87f8954.Retry/logs/LazyDeoptimizationMul..
Original change's description:
> Deoptimization and multithreading.
>
> When using Lockers and Unlockers it is possible to create a
> scenario where multiple threads point to the same optimized
> code object. When that happens, if one of the threads triggers
> deoptimization, then the stack replacement needs to happen in
> the stacks of all threads.
> With this CL, the deoptimizer visits all threads to do so.
> The CL also adds three tests where V8 used to crash.
>
> Bug: v8:6563
> Change-Id: Iea88f47af2f31181c0ef06d898faccde9ad14432
> Reviewed-on: https://chromium-review.googlesource.com/657423
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
> Cr-Commit-Position: refs/heads/master@{#48033}
TBR=mstarzinger@chromium.org,jarin@chromium.org,bmeurer@chromium.org,jupvfranco@google.com
Change-Id: I290c9e339c367f68c0d1b6f7c0780cdbbbdf3f8a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6563
Reviewed-on: https://chromium-review.googlesource.com/669399
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48049}
- Moves base::VirtualMemory to v8::internal::VirtualMemory.
- Makes VirtualMemory platform-independent by moving internals to new
OS:: static methods, for each platform.
This will make it easier to delegate memory management in VirtualMemory
to V8::Platform, so that embedders like Blink can override it. We can't
depend on V8::Platform in base/platform.
Bug: chromium:756050
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Iadfe230b6850bd917727a373f277afded9883adf
Reviewed-on: https://chromium-review.googlesource.com/653214
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48048}
Empty slot set buckets can leak in the following scenarios.
Scenario 1 (large object space):
1) A large array is allocated in the large object space.
2) The array is filled with old->new references, which allocates new
slot set buckets.
3) The references are overwritten with smis or old space pointers, which
make the slots set buckets empty.
4) Garbage collection (scavenge or mark-compact) iterates the slots set
of the array and pre-frees the empty buckets.
5) Steps 2-4 repeated many times and leak arbitary many empty buckets.
The fix to free empty buckets for large object space in mark-compact.
Scenario 2 (no mark-compact):
1) A small array is allocated in the old space.
2) The array is filled with old->new references, which allocates new
slot set buckets.
3) The references are overwritten with smis or old space pointers, which
make the slots set buckets empty.
4) Scavenge iterates the slots set of the array and pre-frees the empty
buckets.
5) Steps 2-4 repeated many times and leak arbitary many empty buckets.
The fix to free empty buckets for swept pages in scavenger.
Bug: v8:6800
TBR: mlippautz@chromium.org
Change-Id: I48d94870f5acf4f6208858271886911c895a9126
Reviewed-on: https://chromium-review.googlesource.com/668442
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48041}
Support inlining of Array.prototype.filter in TurboFan.
Bug: v8:1956
Change-Id: Iba4d683aaa86c6104e8a1cf4d0f549a0c516576a
Reviewed-on: https://chromium-review.googlesource.com/657021
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48040}
Given that the index we use is checked to be in array index range there is no
need for a costly ToString conversion. All involved helpers for lookup up
properties directly support Smi/HeapNumber indices directly.
Cleanup: Rename GotoUnlessNumberLessThan => GotoIfNumberGreaterThanOrEqual
Change-Id: Iaddc4940f5d984572aa218d568ca71bf694cee74
Reviewed-on: https://chromium-review.googlesource.com/640388
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48039}
When using Lockers and Unlockers it is possible to create a
scenario where multiple threads point to the same optimized
code object. When that happens, if one of the threads triggers
deoptimization, then the stack replacement needs to happen in
the stacks of all threads.
With this CL, the deoptimizer visits all threads to do so.
The CL also adds three tests where V8 used to crash.
Bug: v8:6563
Change-Id: Iea88f47af2f31181c0ef06d898faccde9ad14432
Reviewed-on: https://chromium-review.googlesource.com/657423
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Cr-Commit-Position: refs/heads/master@{#48033}
When accessing the buffer in 1 byte increments, the order should
be reversed for BE.
R=petermarshall@chromium.org, yangguo@chromium.org
BUG=
LOG=N
Change-Id: I27a57e12479d1c00488546a92428b9183d87f8bf
Reviewed-on: https://chromium-review.googlesource.com/667902
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Jaideep Bajwa <bjaideep@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#48031}
This patch ensures a `TypeError` is thrown when the argument passed to
`Array.prototype.sort` or `%TypedArray%.prototype.sort` is neither a
function nor `undefined`.
Every other major JavaScript engine already threw in this case. Making
V8’s behavior match increases interoperability.
https://github.com/tc39/ecma262/pull/785
BUG=v8:6542
Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I412a59810abdd118217c8d8361389ec6c2f640bd
Reviewed-on: https://chromium-review.googlesource.com/668356
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48028}
In this CL I implement streaming compilation for WebAssembly,
as described in the design doc I have sent out already.
In this implementation the decoding of sections other than the
code section is done immediately on the foreground thread.
Eventually all decoding should happen in the background. I
think it is acceptable to do the decoding on the foreground
thread for now because I have finished it already, and
decoding in the background would add even more complexity to
this CL.
Bug:v8:6785
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I285e1e5e1a5a243113c92571b25ee9bae551d0ed
Reviewed-on: https://chromium-review.googlesource.com/631721
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48022}
- Validate that atomic ops can only be called when shared memory is declared
- Throw Compile/Link erros on mismatch between declared, imported memory
- Test harness helpers for setting shared memory, tests
BUG=v8:6532
R=binji@chromium.org, bradnelson@chromium.org
Change-Id: I43fe3d04bb7e3e0a2cecca0528578f98844d2608
Reviewed-on: https://chromium-review.googlesource.com/665379
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48019}
This patch ensures that an object returned by AllocateRaw is marked
black if black allocation starts during the object allocation.
This fixes the following issue:
1) Generated code requests allocation of size N for folded allocation.
2) Runtime gets a free list node at address A of size N+M and sets up
a linear allocation area with top = A+N and limit = A+N+M.
3) Runtime invokes the allocation observer that starts incremental marking
and start black allocation. The area [A+N, A+N+M) is marked black.
4) Runtime returns a white object at address A as the allocation result.
5) Generated code moves the top pointer to A and does bump pointer
allocations of white objects from A to A+N+M.
6) Object allocated new A+N can have the impossible marbit pattern.
Bug: chromium:694255
Change-Id: I09ceebc97a510fa5fe4ff20706bc46a99f8b7cf4
Reviewed-on: https://chromium-review.googlesource.com/638338
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48005}
Extends the current implementation of WASM exceptions to be able to
throw exceptions with values (not just tags).
An JS typed array (uint_16) is used to hold thrown values, so that the
thrown values can be inspected in JS.
Bug: v8:6577
Change-Id: I1007e79ceaffd64386b62562919cfbb920fc10c5
Reviewed-on: https://chromium-review.googlesource.com/633866
Commit-Queue: Karl Schimpf <kschimpf@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48001}
SetForceInlineFlag is now only used in tests. Earlier, it was also used
in js builtins, because unless this flag was specified the js builtins
were not inlined. All the performance critical js builtins are moved
to turbofan builtins and SetForceInlineFlag is no longer used. We would
like to remove this flag completely to simplify inlining heuristics.
Also, this uses a bit on the SharedFuntionInfo.
Bug: v8:6682
Change-Id: I19afd27381afc212f29179f2c5477095c8174f39
Reviewed-on: https://chromium-review.googlesource.com/660739
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47997}
Before we used to require compiled debugger script to report Scopes.
After migration inspection to brand-new native API we can report
Scopes all the time and remove this hidden dependency.
R=dgozman@chromium.org
Bug: none
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I3530bc7ead691a51073e384aea4a4ef428dc94da
Reviewed-on: https://chromium-review.googlesource.com/662097
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47982}
This continues to move the "desugaring" of unary operators further
down the pipeline, in this case into the bytecode handlers for new
bytecodes `Negate` and `BitwiseNot` and the corresponding TF code
in BytecodeGraphBuilder.
Bug: v8:6971
Tbr: yangguo@chromium.org
Change-Id: If6b5d6b239a09ef8b4dbde49321614503c0f5beb
Reviewed-on: https://chromium-review.googlesource.com/661146
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47980}
As part of that change, make ToNumber return in the accumulator.
Bug: v8:6791
Change-Id: I8ce0f4fbc7ad8ee7fb4a32a8a499394395010750
Reviewed-on: https://chromium-review.googlesource.com/658082
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47976}
So far we didn't properly constant-fold JSToString operators in
JSTypedLowering where the input was a known number constant.
Bug: v8:6815
Change-Id: Iac87346b7d38f0f75461f285ea7daa2d5a5e1524
Reviewed-on: https://chromium-review.googlesource.com/663358
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47972}
This further reduces the amount of test-specific code. It will also
help testing the wasm baseline compiler, since it is also being called
from the {WasmCompilationUnit}.
Also, move the {RuntimeExceptionSupport} flag from the
{WasmFunctionCompiler} to the {TestingModuleBuilder}. There is no need
to store this per function builder. The {TestingModuleBuilder} then
passes it on to the {WasmCompilationUnit}, which finally sets it on the
{WasmGraphBuilder}.
R=mtrofin@chromium.org
Bug: v8:6600
Change-Id: I783dc296297a5ca37a2dd0d2035d782ca19a0fee
Reviewed-on: https://chromium-review.googlesource.com/660239
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47970}
We were using a boolean before, which makes the meaning non-obvious
when passed as a parameter. With the enum, you actually have to use
{kRuntimeExceptionSupport} or {kNoRuntimeExceptionSupport}.
R=mtrofin@chromium.org
Change-Id: Iaf5a7b6f1b446d4c3e16e044a6055d923d3b0b49
Reviewed-on: https://chromium-review.googlesource.com/660738
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47969}
Contributed by kanghua.yu@intel.com.
Bug: None
Change-Id: I5651ef38eb0c08deb97770a5eaa985dba2dab9a9
Reviewed-on: https://chromium-review.googlesource.com/604648
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Pan Deng <pan.deng@intel.com>
Cr-Commit-Position: refs/heads/master@{#47968}
