This patch does five things:
1. Extracts sampler as libsampler to provide sampling functionality support.
2. Makes SampleStack virtual so embedders can override the behaviour of sample collecting.
3. Removes sampler.[h|cc].
4. Moves sampling thread into log.cc as workaround to keep the --prof functionality.
5. Creates SamplerManager to manage the relationship between samplers and threads.
The reason we port hashmap.h is that in debug mode, STL containers are using
mutexes from a mutex pool, which may lead to deadlock when using asynchronously
signal handler.
Currently libsampler is used in V8 temporarily.
BUG=v8:4789
LOG=n
Committed: https://crrev.com/06cc9b7c176a6223971deaa9fbcafe1a05058c7b
Cr-Commit-Position: refs/heads/master@{#36527}
Review-Url: https://codereview.chromium.org/1922303002
Cr-Commit-Position: refs/heads/master@{#36532}
Reason for revert:
Premature revert. Chromium roll included an earlier version.
Original issue's description:
> Revert of "[heap] Fine-grained JSArrayBuffer tracking" (patchset #3 id:80001 of https://codereview.chromium.org/2007253002/ )
>
> Reason for revert:
> Breaks webgl2 conformance tests
> https://bugs.chromium.org/p/chromium/issues/detail?id=614730
>
> Original issue's description:
> > Reland of "[heap] Fine-grained JSArrayBuffer tracking"
> >
> > Track based on JSArrayBuffer addresses on pages instead of the attached
> > backing store.
> >
> > Details of tracking:
> > - Scavenge: New space pages are processes in bulk on the main thread
> > - MC: Unswept pages are processed in bulk in parallel. All other pages
> > are processed by the sweeper concurrently.
> >
> > This reverts commit 93fe04afa9.
> >
> > R=hpayer@chromium.org
> > BUG=chromium:611688
> > LOG=N
> > CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
> >
> > Committed: https://crrev.com/863d015e573798e263b35b31d2ab979739706533
> > Cr-Commit-Position: refs/heads/master@{#36513}
>
> TBR=hpayer@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:611688
>
> Committed: https://crrev.com/b9b0868ec49a52c9a80c9beea862a61707b292e5
> Cr-Commit-Position: refs/heads/master@{#36524}
TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688
Review-Url: https://codereview.chromium.org/2009383002
Cr-Commit-Position: refs/heads/master@{#36530}
Reason for revert:
V8 Linux64 TSAN failure because ThreadSanitizer indicated data race.
Original issue's description:
> Create libsampler as V8 sampler library.
>
> This patch does five things:
>
> 1. Extracts sampler as libsampler to provide sampling functionality support.
> 2. Makes SampleStack virtual so embedders can override the behaviour of sample collecting.
> 3. Removes sampler.[h|cc].
> 4. Moves sampling thread into log.cc as workaround to keep the --prof functionality.
> 5. Creates SamplerManager to manage the relationship between samplers and threads.
>
> The reason we port hashmap.h is that in debug mode, STL containers are using
> mutexes from a mutex pool, which may lead to deadlock when using asynchronously
> signal handler.
>
> Currently libsampler is used in V8 temporarily.
>
> BUG=v8:4789
> LOG=n
>
> Committed: https://crrev.com/06cc9b7c176a6223971deaa9fbcafe1a05058c7b
> Cr-Commit-Position: refs/heads/master@{#36527}
TBR=jochen@chromium.org,alph@chromium.org,fmeawad@chromium.org,yangguo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
Review-Url: https://codereview.chromium.org/2000323007
Cr-Commit-Position: refs/heads/master@{#36529}
This patch does five things:
1. Extracts sampler as libsampler to provide sampling functionality support.
2. Makes SampleStack virtual so embedders can override the behaviour of sample collecting.
3. Removes sampler.[h|cc].
4. Moves sampling thread into log.cc as workaround to keep the --prof functionality.
5. Creates SamplerManager to manage the relationship between samplers and threads.
The reason we port hashmap.h is that in debug mode, STL containers are using
mutexes from a mutex pool, which may lead to deadlock when using asynchronously
signal handler.
Currently libsampler is used in V8 temporarily.
BUG=v8:4789
LOG=n
Review-Url: https://codereview.chromium.org/1922303002
Cr-Commit-Position: refs/heads/master@{#36527}
Reason for revert:
Breaks webgl2 conformance tests
https://bugs.chromium.org/p/chromium/issues/detail?id=614730
Original issue's description:
> Reland of "[heap] Fine-grained JSArrayBuffer tracking"
>
> Track based on JSArrayBuffer addresses on pages instead of the attached
> backing store.
>
> Details of tracking:
> - Scavenge: New space pages are processes in bulk on the main thread
> - MC: Unswept pages are processed in bulk in parallel. All other pages
> are processed by the sweeper concurrently.
>
> This reverts commit 93fe04afa9.
>
> R=hpayer@chromium.org
> BUG=chromium:611688
> LOG=N
> CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
>
> Committed: https://crrev.com/863d015e573798e263b35b31d2ab979739706533
> Cr-Commit-Position: refs/heads/master@{#36513}
TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688
Review-Url: https://codereview.chromium.org/2011563003
Cr-Commit-Position: refs/heads/master@{#36524}
Track based on JSArrayBuffer addresses on pages instead of the attached
backing store.
Details of tracking:
- Scavenge: New space pages are processes in bulk on the main thread
- MC: Unswept pages are processed in bulk in parallel. All other pages
are processed by the sweeper concurrently.
This reverts commit 93fe04afa9.
R=hpayer@chromium.org
BUG=chromium:611688
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
Review-Url: https://codereview.chromium.org/2007253002
Cr-Commit-Position: refs/heads/master@{#36513}
This interpreter directly decodes and executes WASM binary code for
the purpose of supporting low-level debugging. It is not currently
integrated into the main WASM implementation.
R=ahaas@chromium.org,clemensh@chromium.org,rossberg@chromium.org,binji@chromium.org
BUG=
Review-Url: https://codereview.chromium.org/1972153002
Cr-Commit-Position: refs/heads/master@{#36497}
Track based on JSArrayBuffer addresses on pages instead of the attached
backing store.
Details of tracking:
- Scavenge: New space pages are processes in bulk on the main thread
- MC: Unswept pages are processed in bulk in parallel. All other pages
are processed by the sweeper concurrently.
This reverts commit d2dff0320b.
R=hpayer@chromium.org
BUG=chromium:611688
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
Review-Url: https://codereview.chromium.org/2005723005
Cr-Commit-Position: refs/heads/master@{#36495}
This moves setting the v8_target_arch default to the shared
v8.gni, so that it's available in build_overrides for
stand-alone mode.
BUG=chromium:605732, chromium:474921
NOTRY=true
Review-Url: https://codereview.chromium.org/2006213002
Cr-Commit-Position: refs/heads/master@{#36465}
There are bots on the chromium.lkgr waterfall that need to
be able to set v8_target_arch to "arm" while the rest of
the target build is "x86". This CL makes that argument
a declare_arg(), so that we can do that.
BUG=chromium:605732,chromium:474921
NOTRY=true
Review-Url: https://codereview.chromium.org/2007843002
Cr-Commit-Position: refs/heads/master@{#36464}
Reason for revert:
Revert it.
Original issue's description:
> [heap] Fine-grained JSArrayBuffer tracking
>
> Track based on JSArrayBuffer addresses instead of the attached backing store.
> This way we can later on iterate buffers on a single page. The reland also
> switches to a page-based implementation where a page contains the set of its
> contained (live and dead) buffers.
>
> Details of tracking:
> - Scavenge: New space pages are processes in bulk on the main thread
> - MC: Unswept pages are processed in bulk in parallel. All other pages
> are processed by the sweeper concurrently.
>
> BUG=chromium:611688
> LOG=N
> CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
>
> Committed: https://crrev.com/b2d8bfc7931eef49d527605ba485950dea41cde3
> Cr-Commit-Position: refs/heads/master@{#36437}
TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688
Review-Url: https://codereview.chromium.org/2006183003
Cr-Commit-Position: refs/heads/master@{#36461}
Track based on JSArrayBuffer addresses instead of the attached backing store.
This way we can later on iterate buffers on a single page. The reland also
switches to a page-based implementation where a page contains the set of its
contained (live and dead) buffers.
Details of tracking:
- Scavenge: New space pages are processes in bulk on the main thread
- MC: Unswept pages are processed in bulk in parallel. All other pages
are processed by the sweeper concurrently.
BUG=chromium:611688
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
Review-Url: https://codereview.chromium.org/1964023002
Cr-Commit-Position: refs/heads/master@{#36437}
This patch re-lands #36341 with another fix to make
the amd64-generic build work as well.
R=machenbach@chromium.org, hablich@chromium.org, adamk@chromium.org
BUG=608596, 595653
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:chromeos_daisy_chromium_compile_only_ng,chromeos_amd64-generic_chromium_compile_only_ng,chromeos_x86-generic_chromium_compile_only_ng,linux_chromium_gn_chromeos_rel,linux_chromium_gn_chromeos_dbg
Review-Url: https://codereview.chromium.org/1996513005
Cr-Commit-Position: refs/heads/master@{#36390}
use_icu_data_file from //third_party/icu should be used.
//third_party/icu also defines ICU_UTIL_DATA_IMPL.
BUG=chromium:610673,chromium:474921
Review-Url: https://codereview.chromium.org/1996033002
Cr-Commit-Position: refs/heads/master@{#36371}
This patch re-lands #36193 with a couple of minor tweaks
including updating the BUILD.gn file to use the new
variable name and incorporating thakis' request to support
cross-compiling the win snapshot from a mac.
R=thakis@chromium.org, jochen@chromium.org, machenbach@chromium.org
BUG=608596, 595653
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:chromeos_daisy_chromium_compile_only_ng
Review-Url: https://codereview.chromium.org/1979883002
Cr-Commit-Position: refs/heads/master@{#36342}
Repackage encodeURI and encodeURIComponent as builtin functions
and install them in the bootstrapper.
Crude benchmark on 351 encodeURI and encodeURIComponent tests averaged
over five runs:
* builtin functions
real 0m8.01s
user 0m18.00s
sys 0m7.37s
* JS functions calling into the runtime e.g., for %NewString
real 0m8.44s
user 0m19.52s
sys 0m7.49s
By running:
$ time tools/run-tests.py --arch=x64 --mode=Release --buildbot
mjsunit/uri test262/built-ins/encodeURI*
>>> Running tests for x64.Release
BUG=v8:4912
R=yangguo@chromium.org
Review-Url: https://codereview.chromium.org/1983593002
Cr-Commit-Position: refs/heads/master@{#36273}
Since we are going to move Sampler as library, we creates tick-sample.[h|cc] for
TickSample, in order to maintain legacy code.
BUG=v8:4994
LOG=n
Review-Url: https://codereview.chromium.org/1952393002
Cr-Commit-Position: refs/heads/master@{#36267}
Expression::bounds_ is used only by a subset of compile passes, but the
data structure occupies space for every Expression node ever parsed. This
unneccessarily increases memory consumption. Particularly, peak memory
consumption during startup, which may cause out-of-memory errors.
This CL
- removes Expression::bounds_;
- introduces an AstTypeBounds container, which mappes Expression* to Bounds;
- modifies the code that actually requires bounds information, namely
Crankshaft compile and AsmWasmBuilder, to instantiate such an AstTypeBounds
container before typing and to pass it to the code that consumes this
information; and
- modifies all accesses to Expression::bounds_ to instead access the bounds
via the container instead.
Additionally, this rewrites test-ast-expression-visitor. The reason is that
this code attempted to test AstExpressionVisitor but did so exclusively
through its subclass ExpressionTypeCollector, meaning that the test dealt
almost exclusively with type bounds despite the class-under-test having
no knowledge or functionality related to it. Worse, the test was written
in a way to assume that type bounds were available outside & after
compilation, which is something this change changes.
BUG=v8:4947
Review-Url: https://codereview.chromium.org/1968383002
Cr-Commit-Position: refs/heads/master@{#36222}
This change introduces a pipeline for the final stages of
bytecode generation.
The peephole optimizer is made distinct from the BytecodeArrayBuilder.
A new BytecodeArrayWriter is responsible for writing bytecode. It
also keeps track of the maximum register seen and offers a potentially
smaller frame size.
R=rmcilroy@chromium.org
LOG=N
BUG=v8:4280
Review-Url: https://codereview.chromium.org/1947403002
Cr-Commit-Position: refs/heads/master@{#36220}
This patch removes the following properties, as their use count is
very low, they are V8-only, and not on a standards track.
- v8Parse
- resolved
- pattern
v8BreakIterator is left in as it has significantly more usage.
BUG=v8:3785
R=adamk,jshin@chromium.org
Review-Url: https://codereview.chromium.org/1968893002
Cr-Commit-Position: refs/heads/master@{#36190}
When I18N is enabled, use ICU's case conversion API and transliteration
API [1] to implement String.prototype.to{Upper,Lower}Case and
String.prototype.toLocale{Upper,Lower}Case.
* ICU-based case conversion was implemented in runtime-i18n.cc/i18n.js
* The above 4 functions are overridden with those in i18n.js when
--icu_case_mapping flag is turned on. To control the override by the flag,
they're overriden in icu-case-mapping.js
Previously, toLocale{U,L}Case just called to{U,L}Case so that they didn't
support locale-sensitive case conversion for Turkic languages (az, tr),
Greek (el) and Lithuanian (lt).
Before ICU APIs for the most general case are called, a fast-path for Latin-1
is tried. It's taken from Blink and adopted as necessary. This fast path
is always tried for to{U,L}Case. For toLocale{U,L}Case, it's only taken
when a locale (explicitly specified or default) is not in {az, el, lt, tr}.
With these changes, a build with --icu_case_mapping=true passes a bunch
of tests in test262/intl402/Strings/* and intl/* that failed before.
Handling of pure ASCII strings (aligned at word boundary) are not as fast
as Unibrow's implementation that uses word-by-word case conversion. OTOH,
Latin-1 input handling is faster than Unibrow. General Unicode input
handling is slower but more accurate.
See https://docs.google.com/spreadsheets/d/1KJCJxKc1FxFXjwmYqABS0_2cNdPetvnd8gY8_HGSbrg/edit?usp=sharing for the benchmark.
This CL started with http://crrev.com/1544023002#ps200001 by littledan@,
but has changed significantly since.
[1] See why transliteration API is needed for uppercasing in Greek.
http://bugs.icu-project.org/trac/ticket/10582
R=yangguo
BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*, mjsunit/string-case,
intl/general/case*
Review-Url: https://codereview.chromium.org/1812673005
Cr-Commit-Position: refs/heads/master@{#36187}
This code was used exclusively by its own unit test and can be safely removed.
BUG=v8:4947
LOG=N
Review-Url: https://codereview.chromium.org/1965373002
Cr-Commit-Position: refs/heads/master@{#36180}
This makes sure that targets depending on v8_libplatform
apply the required config.
BUG=chromium:474921
NOTRY=true
Review-Url: https://codereview.chromium.org/1962423003
Cr-Commit-Position: refs/heads/master@{#36170}
This adds a new pass MemoryOptimizer that walks over the effect chain
from Start and lowers all Allocate, LoadField, StoreField, LoadElement,
and StoreElement nodes, trying to fold allocations into allocation
groups and eliminate write barriers on StoreField and StoreElement if
possible (i.e. if the object belongs to the current allocation group and
that group allocates in new space).
R=hpayer@chromium.org, jarin@chromium.org
BUG=v8:4931, chromium:580959
LOG=n
Review-Url: https://codereview.chromium.org/1963583004
Cr-Commit-Position: refs/heads/master@{#36128}
atomic-utils.h only uses functionality from base/, and also by moving it into
base/, code outside of v8_base can benefit from it.
BUG=v8:4991
LOG=n
Review-Url: https://codereview.chromium.org/1954603002
Cr-Commit-Position: refs/heads/master@{#36114}
