Design doc:
https://docs.google.com/document/d/1ZU6rCvF2YHBGMLujWqqaxlPsjFfjKDE9C3-EugfdlAE/edit
Changes from the design doc:
- Changed to use 'class' declarations rather than 'type' declarations
for things that need instance types but whose layout is not known to
Torque. These declarations end with a semicolon rather than having a
full set of methods and fields surrounded by {}. If the class's name
should not be treated as a class name in generated output (because
it's actually a template, or doesn't exist at all), we use the
standard 'generates' clause to declare the most appropriate C++ class.
- Removed @instanceTypeName.
- @highestInstanceType became @highestInstanceTypeWithinParentClassRange
to indicate a semantic change: it no longer denotes the highest
instance type globally, but only within the range of values for its
immediate parent class. This lets us use it for Oddball, which is
expected to be the highest primitive type.
- Added new abstract classes JSCustomElementsObject and JSSpecialObject
to help with some range checks.
- Added @lowestInstanceTypeWithinParentClassRange so we can move the new
classes JSCustomElementsObject and JSSpecialObject to the beginning of
the JSObject range. This seems like the least-brittle way to establish
ranges that also include JSProxy (and these ranges are verified with
static assertions in instance-type.h).
- Renamed @instanceTypeValue to @apiExposedInstanceTypeValue.
- Renamed @instanceTypeFlags to @reserveBitsInInstanceType.
This change introduces the new annotations and adds the ability for
Torque to assign instance types that satisfy those annotations. Torque
now emits two new macros:
- TORQUE_ASSIGNED_INSTANCE_TYPES, which is used to define the
InstanceType enumeration
- TORQUE_ASSIGNED_INSTANCE_TYPE_LIST, which replaces the non-String
parts of INSTANCE_TYPE_LIST
The design document mentions a couple of other macro lists that could
easily be replaced, but I'd like to defer those to a subsequent checkin
because this one is already pretty large.
Bug: v8:7793
Change-Id: Ie71d93a9d5b610e62be0ffa3bb36180c3357a6e8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1757094
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64258}
The backing store is now propagated to the constructors directly,
instead of being attached after the construction. This ensures that
the backing store is allocated before the array buffer so that we can
trigger GCs on backing store allocation (if allocation fails).
The only exception is builtin where we have to allocate the array buffer
before the backing store to comply with the spec.
Bug: v8:9380
Tbr: verwaest@chromium.org
Change-Id: Ib37db65853f3673dd769368cc3e8b6538ad07ff2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1853444
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64240}
Code from ARES-6 Basic:
ldur w11, [x5, #15]
asr w11, w11, #1
sxtw x11, w11
With this CL:
ldur w11, [x5, #15]
sbfx x11, x11, #1, #31
This increases performance of Ares6 Basic by ~2% on Cortex-A53.
Also reduces the snapshot by ~2000 instructions.
Change-Id: Ie9801da730f832337306422d2a9c63461d9e5690
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1849530
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/master@{#64235}
The flag is enabled since M-70, and we do not use the previous
behaviour anywhere. Hence, remove the flag and clean up some API code.
In particular, the concept of {TransferrableModule} is not needed any
more, we can just use {CompiledWasmModule}.
R=mstarzinger@chromium.org, adamk@chromium.org
Bug: v8:9810
Change-Id: I9b3aa4972277a9262b58da70b141e90d1de31f35
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1847366
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64209}
The plan is to eliminate the DecompressionElimination reducer
as well as the Compressed representation. We are adding a flag to
easily swap between the old system and the new one.
Bug: v8:7703, v8:9206
Change-Id: I083fc7a835962eddfd60e9c403131587489f4632
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815134
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64185}
This brings our constants back in line with the changed spec text. We
already use kExprTableGet and kExprTableSet, but for locals and globals
we still use the old wording.
This renaming is mostly mechanical.
PS1 was created using:
ag -l 'kExpr(Get|Set)Global' src test | \
xargs -L1 sed -E 's/kExpr(Get|Set)Global\b/kExprGlobal\1/g' -i
PS2 contains manual fixes.
R=mstarzinger@chromium.org
Bug: v8:9810
Change-Id: I064a6448cd95bc24d31a5931b5b4ef2464ea88b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1847355
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64163}
This brings our constants back in line with the changed spec text. We
already use kExprTableGet and kExprTableSet, but for locals and globals
we still use the old wording.
This renaming is mostly mechanical.
PS1 was created using:
ag -l 'kExpr(Get|Set|Tee)Local' src test | \
xargs -L1 sed -E 's/kExpr(Get|Set|Tee)Local\b/kExprLocal\1/g' -i
PS2 contains manual fixes.
R=mstarzinger@chromium.org
Bug: v8:9810
Change-Id: I1617f1b2a100685a3bf56218e76845a9481959c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1847354
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64161}
With the smi-corrupting decompression approach we don't have to sign
extend Smis anymore and therefore we can switch to zero extending
approach by moving the isolate root to the beginning of the reserved
4Gb region.
Bug: v8:9706
Change-Id: Icd6008fa87d0924519b574fdec445976f742e306
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835548
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64144}
Placing these tests in anonymous namespaces, is the suggested fix
according to the GCC documentation.
The GCC documentation states: "If a type A depends on a type B with no or
internal linkage, defining it in multiple translation units would be an
ODR violation because the meaning of B is different in each translation unit.
If A only appears in a single translation unit, the best way to silence the
warning is to give it internal linkage by putting it in an anonymous namespace as well."
Change-Id: I69a1e9b5f1789e9a7a62c762cd499809a72e0ea5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1836255
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64128}
Do not store page_start_ in SlotSet anymore, when needed this address
can be calculated cheaply and be passed in from the caller.
Bug: v8:9454
Change-Id: I4cdb010e4126680d8df500e40ae3d0bc884cf501
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1838731
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64103}
This is a reland of cfb100282e
with a fix for failures in lite mode.
Original change's description:
> [compiler] Cache OSR optimized code
>
> With lazy feedback allocation, for functions that get OSRed we may
> not have feedback for the initial part of the functions since feedback
> vectors might be allocated after the function started executing. Hence
> we would not be able to optimize the function on the next call. This
> means we may have to OSR twice before we actually optimize function.
> This cl introduces OSR cache, so we could reuse the optimized code. One
> side effect of this cl is that the OSRed code won't be function context
> specialized anymore.
>
> Bug: chromium:987523
> Change-Id: Ic1e2abca85ccfa0a66a0fa83f7247392cc1e7cb2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1796329
> Commit-Queue: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64014}
Bug: chromium:987523
Change-Id: I9c782242b07b24d15247533ab4ee044334b429ff
TBR: rmcilroy@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1826898
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64023}
This reverts commit cfb100282e.
Reason for revert:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm%20-%20sim%20-%20lite/6483
Original change's description:
> [compiler] Cache OSR optimized code
>
> With lazy feedback allocation, for functions that get OSRed we may
> not have feedback for the initial part of the functions since feedback
> vectors might be allocated after the function started executing. Hence
> we would not be able to optimize the function on the next call. This
> means we may have to OSR twice before we actually optimize function.
> This cl introduces OSR cache, so we could reuse the optimized code. One
> side effect of this cl is that the OSRed code won't be function context
> specialized anymore.
>
> Bug: chromium:987523
> Change-Id: Ic1e2abca85ccfa0a66a0fa83f7247392cc1e7cb2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1796329
> Commit-Queue: Mythri Alle <mythria@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64014}
TBR=rmcilroy@chromium.org,neis@chromium.org,mythria@chromium.org
Change-Id: Ib3692e7570bed5d3e88ca8a0247b185d70497a04
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:987523
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1826668
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64015}
With lazy feedback allocation, for functions that get OSRed we may
not have feedback for the initial part of the functions since feedback
vectors might be allocated after the function started executing. Hence
we would not be able to optimize the function on the next call. This
means we may have to OSR twice before we actually optimize function.
This cl introduces OSR cache, so we could reuse the optimized code. One
side effect of this cl is that the OSRed code won't be function context
specialized anymore.
Bug: chromium:987523
Change-Id: Ic1e2abca85ccfa0a66a0fa83f7247392cc1e7cb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1796329
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64014}
R=adamk@chromium.org
No-Try: true
Change-Id: Idedb3d80382c876f09c545cf0f1cc7387b9ad805
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1825242
Auto-Submit: Clemens Backes [né Hammacher] <clemensb@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63979}
Since https://crrev.com/c/1771783 the mutator owns the old-to-new
remembered set, while the sweeper modifies the sweeping-slot-set.
This allows us to update the old-to-new remembered set non-atomically.
In this CL the mutator now inserts non-atomically into the remembered
set. The AccessMode is now explicit for Insert-operations as well.
Bug: v8:9454
Change-Id: I94730345f7dd34fe309839969330687c94b3080b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803652
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63971}
In the {Fixed} variant, the {WasmCodeManagerTest} always reserves
1GB of memory. This makes the test run OOM on many 32-bit platforms.
Instead of skipping it selectively, this CL just removes the whole
test. It caused a lot of trouble in the past, and needs two test-only
methods in the WasmCodeManager. Also, the {Fixed} variant will not be
needed any more with the wasm far jump table, since modules can always
grow then.
Drive-by: Clean up the unittests status file a bit.
R=mstarzinger@chromium.org
Bug: v8:9477
Change-Id: I5b6f8ed9f800863575c69d49d5df82f21fd23030
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815251
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Backes [né Hammacher] <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63942}
This reverts commit ad83fa921b.
Reason for revert: Crashes odroid: https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/11234
Original change's description:
> [wasm] Fix TODO and skip test on win32
>
> In the {Fixed} variant, the {GrowingVsFixedModule} test first reserves
> 1GB of memory, then allocates another 1GB to add it to the module as
> code. This uses too much memory on win32, making the test fail.
> Before this CL, the {NativeModule} only reserved 128kB upfront (in
> contrast to the actual expectation of the test).
>
> Since all other aspects of this test are already covered by other
> tests, we just skip this test on win32.
> This allows us to resolve the TODO.
>
> Drive-by: Clean up the unittests status file a bit.
>
> R=mstarzinger@chromium.org
>
> Bug: v8:9477
> Change-Id: I575dd1a3f486e1805e0256e8ee6071246f2c24c4
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1816505
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63921}
TBR=mstarzinger@chromium.org,clemensh@chromium.org
Change-Id: Ia9d9b9e311ff8b7524938aeb02543bf2c01bdd27
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9477
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815250
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63923}
In the {Fixed} variant, the {GrowingVsFixedModule} test first reserves
1GB of memory, then allocates another 1GB to add it to the module as
code. This uses too much memory on win32, making the test fail.
Before this CL, the {NativeModule} only reserved 128kB upfront (in
contrast to the actual expectation of the test).
Since all other aspects of this test are already covered by other
tests, we just skip this test on win32.
This allows us to resolve the TODO.
Drive-by: Clean up the unittests status file a bit.
R=mstarzinger@chromium.org
Bug: v8:9477
Change-Id: I575dd1a3f486e1805e0256e8ee6071246f2c24c4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1816505
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63921}
This adds an additional V8 API to get the backing store of an array
buffer. Unlike the existing API, the backing store comes wrapped
in a std::shared_ptr, making lifetime management with the embedder
explicit. This obviates the need for the old GetContents() and
Externalize() APIs, which will be deprecated in a future CL.
Contributed by titzer@chromium.org
Bug: v8:9380
Change-Id: I8a87f5dc141dab684693fe536b636e33f6e45173
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807354
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63883}
The element segment encoding in the bulk memory proposal changed
recently. With this CL the V8 implementation gets up to date again.
R=thibaudm@chromium.org
Bug: v8:9658
Change-Id: I4f45d04369400356a6f3aaed9570c7870f5f97bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1778022
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63836}
Make TryEmitCbzOrTbz a template, so it can be used for Word64 as well as Word32.
0.09% reduction of embedded builtins size with a arm64 ptr-compr build.
Some of the unittests weren't ported to Word64 as they don't pass, this is due to
VisitWordCompare missing a loop to remove Word64Equal comparisons against 0. This
can be added in a different CL if needed.
Change-Id: I927129d934083b71abe5b77991c39286470a228d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1792908
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63751}
This enables using TNode types without including code-assembler.h,
which is useful when generating CallInterfaceDescriptors.
As a drive-by, this moves TNode from v8::internal::compiler to
v8::internal. It's only used outside of the compiler anyway.
Change-Id: I3d938c22366a3570315041683094f77b0d1096a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1798425
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63721}
This reverts commit 4a16305b65.
Reason for revert: Need to revalidate assumptions behind the CHECK.
Original change's description:
> [compiler] Optionally apply an offset to stack checks
>
> The motivation behind this change is that the frame size of an optimized
> function and its unoptimized version may differ, and deoptimization
> may thus trigger a stack overflow. The solution implemented in this CL
> is to optionally apply an offset to the stack check s.t. the check
> becomes 'sp - offset > limit'. The offset is applied to stack checks at
> function-entry, and is set to the difference between the optimized and
> unoptimized frame size.
>
> A caveat: OSR may not be fully handled by this fix since we've already
> passed the function-entry stack check. A possible solution would be to
> *not* skip creation of function-entry stack checks for inlinees.
>
> This CL: 1. annotates stack check nodes with the stack check kind, where
> kind is one of {function-entry,iteration-body,unknown}. 2. potentially
> allocates a temporary register to store the result of the 'sp - offset'
> in instruction selection (and switches input registers to 'unique'
> mode). 3. Applies the offset in code generation.
>
> Drive-by: Add src/compiler/globals.h for compiler-specific globals.
>
> Bug: v8:9534,chromium:1000887
> Change-Id: I257191c4a4978ccb60cfa5805ef421f30f0e9826
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1762521
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63701}
TBR=neis@chromium.org,sigurds@chromium.org,jgruber@chromium.org
Change-Id: Iebf46d5256b6dee13451741781ef85a5fe9b1628
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9534, chromium:1000887
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800565
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63706}
The motivation behind this change is that the frame size of an optimized
function and its unoptimized version may differ, and deoptimization
may thus trigger a stack overflow. The solution implemented in this CL
is to optionally apply an offset to the stack check s.t. the check
becomes 'sp - offset > limit'. The offset is applied to stack checks at
function-entry, and is set to the difference between the optimized and
unoptimized frame size.
A caveat: OSR may not be fully handled by this fix since we've already
passed the function-entry stack check. A possible solution would be to
*not* skip creation of function-entry stack checks for inlinees.
This CL: 1. annotates stack check nodes with the stack check kind, where
kind is one of {function-entry,iteration-body,unknown}. 2. potentially
allocates a temporary register to store the result of the 'sp - offset'
in instruction selection (and switches input registers to 'unique'
mode). 3. Applies the offset in code generation.
Drive-by: Add src/compiler/globals.h for compiler-specific globals.
Bug: v8:9534,chromium:1000887
Change-Id: I257191c4a4978ccb60cfa5805ef421f30f0e9826
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1762521
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63701}
Change-Id: Ie0bd818c629bed3011212fb7c8ab81202a462501
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1798424
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63678}
Since we switched to C++14 now, we can use {std::make_unique} instead
of our own {base::make_unique} from {template-utils.h}.
R=mstarzinger@chromium.org, yangguo@chromium.org
Bug: v8:9687
No-Try: true
Change-Id: I660eb30038bbb079cee93c7861cd87ccd134f01b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1789300
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63642}
This reverts commit 9da3483136
Original change's description:
> "Reland x4 [arraybuffer] Rearchitect backing store ownership"
>
> This is a reland of bc33f5aeba
>
> Contributed by titzer@chromium.org
>
> Original change's description:
> > [arraybuffer] Rearchitect backing store ownership
> >
> > This CL completely rearchitects the ownership of array buffer backing stores,
> > consolidating ownership into a {BackingStore} C++ object that is tracked
> > throughout V8 using unique_ptr and shared_ptr where appropriate.
> >
> > Overall, lifetime management is simpler and more explicit. The numerous
> > ways that array buffers were initialized have been streamlined to one
> > Attach() method on JSArrayBuffer. The array buffer tracker in the
> > GC implementation now manages std::shared_ptr<BackingStore> pointers,
> > and the construction and destruction of the BackingStore object itself
> > handles the underlying page or embedder-allocated memory.
> >
> > The embedder API remains unchanged for now. We use the
> > v8::ArrayBuffer::Contents struct to hide an additional shared_ptr to
> > keep the backing store alive properly, even in the case of aliases
> > from live heap objects. Thus the embedder has a lower chance of making
> > a mistake. Long-term, we should move the embedder to a model where they
> > manage backing stores using shared_ptr to an opaque backing store object.
>
> TBR=yangguo@chromium.org
>
> BUG=v8:9380,v8:9221,chromium:986318
>
> Change-Id: If671a4a9ca0476e8f084efae46e0d2bf99ed99ef
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1731005
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63041}
TBR=yangguo@chromium.org
Change-Id: I3cc4bb80081c662b1751234bc16a821c20e744be
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1792166
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63617}
This is a reland of 8b89a7c32d
Reland after disabling the test getting deadlocked with '--gc_stress' flag.
The CL was reverted because of the 'wasm/grow-shared-memory' test from
the mjsunit test suite deadlocked for the 'gc_stress' variant. This is
the known issue (v8:9221) and the deadlocking test is now disabled (
1c8981e3f4).
Original change's description:
> Update GetIterator bytecode to load and call object[Symbol.iterator]
>
> The functionality of the GetIterator bytecode introduced previously is
> now extended from loading the @@iterator property to calling the property
> as well. This change basically absorbs the functionality of additional
> two bytecodes - Star, CallProperty0 in the GetIterator bytecode.
> Importantly, this change handles the cases of eager and lazy deoptimization
> in the middle of the bytecode, i.e., lazy deopt for LdaNamedProperty and
> eager deopt of the CallProperty0 bytecode, using the continuation builtins.
> This mechanism can work as a template for the future bytecode that require
> handling such inter-bytecode deopt scenario. The tests evaluating the eager
> and lazy deopt scenarios are also included.
>
> Bug: v8:9489
> Change-Id: I93eb022bbc3d37582407820aa8482a343cac6c12
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1758313
> Commit-Queue: Swapnil Gaikwad <swapnilgaikwad@google.com>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63528}
Bug: v8:9489,v8:9221
Change-Id: I4286255aef457bfdbbe5eb50fc6dabdf9c0955b1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1787427
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Swapnil Gaikwad <swapnilgaikwad@google.com>
Cr-Commit-Position: refs/heads/master@{#63599}
TNodified:
* code-assembler
* TailCallBytecodeDispatch
* interpreter-assembler
* GetContextAtDepth
* ExportParametersAndRegisterFile
* ImportRegisterFile
* Dispatch
* DispatchToBytecode
* DispatchToBytecodeHandlerEntry
* DispatchWide
* return type of Jump (Jumps are coming in another CL)
* LoadBytecode
Removed DispatchToBytecodeHandler since it was unused.
Removed target_bytecode parameter of DispatchToBytecodeHandlerEntry
since it was unused.
Bug: v8:6949
Change-Id: Icd3ded28cc1fd1dc528219dd83cf646e67c9b878
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1782838
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63577}
TNodified from interpreter-generator:
* SwitchOnSmiNoFeedback
* CreateFunctionContext
* CreateEvalContext
* SwitchOnGeneratorState
since they were using some of the interpreter-assembler now TNodified
methods.
Bug: v8:6949
Change-Id: I0055100428232e8bdc79cb4356954bac52f4a30d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1781689
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63576}
This reverts commit 8b89a7c32d.
Reason for revert: GC Stress tests timing out.
See https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/24272
Original change's description:
> Update GetIterator bytecode to load and call object[Symbol.iterator]
>
> The functionality of the GetIterator bytecode introduced previously is
> now extended from loading the @@iterator property to calling the property
> as well. This change basically absorbs the functionality of additional
> two bytecodes - Star, CallProperty0 in the GetIterator bytecode.
> Importantly, this change handles the cases of eager and lazy deoptimization
> in the middle of the bytecode, i.e., lazy deopt for LdaNamedProperty and
> eager deopt of the CallProperty0 bytecode, using the continuation builtins.
> This mechanism can work as a template for the future bytecode that require
> handling such inter-bytecode deopt scenario. The tests evaluating the eager
> and lazy deopt scenarios are also included.
>
> Bug: v8:9489
> Change-Id: I93eb022bbc3d37582407820aa8482a343cac6c12
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1758313
> Commit-Queue: Swapnil Gaikwad <swapnilgaikwad@google.com>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63528}
TBR=rmcilroy@chromium.org,neis@chromium.org,leszeks@chromium.org,tebbi@chromium.org,swapnilgaikwad@google.com
Change-Id: I9ae475f71275f71f1b9e60b8bf0578e21ce2704b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9489
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1783736
Reviewed-by: Francis McCabe <fgm@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63536}
The functionality of the GetIterator bytecode introduced previously is
now extended from loading the @@iterator property to calling the property
as well. This change basically absorbs the functionality of additional
two bytecodes - Star, CallProperty0 in the GetIterator bytecode.
Importantly, this change handles the cases of eager and lazy deoptimization
in the middle of the bytecode, i.e., lazy deopt for LdaNamedProperty and
eager deopt of the CallProperty0 bytecode, using the continuation builtins.
This mechanism can work as a template for the future bytecode that require
handling such inter-bytecode deopt scenario. The tests evaluating the eager
and lazy deopt scenarios are also included.
Bug: v8:9489
Change-Id: I93eb022bbc3d37582407820aa8482a343cac6c12
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1758313
Commit-Queue: Swapnil Gaikwad <swapnilgaikwad@google.com>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63528}
E.g. make the setup of the ObjectRef hash table more explicit.
Tbr: jgruber@chromium.org
Bug: v8:7790
Change-Id: I58c03848e7da5c418ff2d6ae1e71b644278f406b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1776089
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63475}
This reverts commit 62e168308c.
Reason for revert: it will be relanded after branch
Original change's description:
> Reland x5 [arraybuffer] Rearchitect backing store ownership
>
> This reverts commit 8fdb23873b.
>
> Original change's description:
> > "Reland x4 [arraybuffer] Rearchitect backing store ownership"
> >
> > This is a reland of bc33f5aeba
> >
> > Contributed by titzer@chromium.org
> >
> > Original change's description:
> > > [arraybuffer] Rearchitect backing store ownership
> > >
> > > This CL completely rearchitects the ownership of array buffer backing stores,
> > > consolidating ownership into a {BackingStore} C++ object that is tracked
> > > throughout V8 using unique_ptr and shared_ptr where appropriate.
> > >
> > > Overall, lifetime management is simpler and more explicit. The numerous
> > > ways that array buffers were initialized have been streamlined to one
> > > Attach() method on JSArrayBuffer. The array buffer tracker in the
> > > GC implementation now manages std::shared_ptr<BackingStore> pointers,
> > > and the construction and destruction of the BackingStore object itself
> > > handles the underlying page or embedder-allocated memory.
> > >
> > > The embedder API remains unchanged for now. We use the
> > > v8::ArrayBuffer::Contents struct to hide an additional shared_ptr to
> > > keep the backing store alive properly, even in the case of aliases
> > > from live heap objects. Thus the embedder has a lower chance of making
> > > a mistake. Long-term, we should move the embedder to a model where they
> > > manage backing stores using shared_ptr to an opaque backing store object.
> >
> > TBR=yangguo@chromium.org
> >
> > BUG=v8:9380,v8:9221,chromium:986318
> >
> > Change-Id: If671a4a9ca0476e8f084efae46e0d2bf99ed99ef
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1731005
> > Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> > Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#63041}
>
> TBR=yangguo@chromium.org,clemensh@chromium.org,mstarzinger@chromium.org
>
> Change-Id: Iba55c7ab71e5642b5cb6aeb699d6fc9cf9061486
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1771795
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63461}
TBR=ulan@chromium.org,mlippautz@chromium.org
Change-Id: Id8f67a68ab398032eb2975b1b24ee125394d9c4b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1776095
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63471}
This reverts commit 8fdb23873b.
Original change's description:
> "Reland x4 [arraybuffer] Rearchitect backing store ownership"
>
> This is a reland of bc33f5aeba
>
> Contributed by titzer@chromium.org
>
> Original change's description:
> > [arraybuffer] Rearchitect backing store ownership
> >
> > This CL completely rearchitects the ownership of array buffer backing stores,
> > consolidating ownership into a {BackingStore} C++ object that is tracked
> > throughout V8 using unique_ptr and shared_ptr where appropriate.
> >
> > Overall, lifetime management is simpler and more explicit. The numerous
> > ways that array buffers were initialized have been streamlined to one
> > Attach() method on JSArrayBuffer. The array buffer tracker in the
> > GC implementation now manages std::shared_ptr<BackingStore> pointers,
> > and the construction and destruction of the BackingStore object itself
> > handles the underlying page or embedder-allocated memory.
> >
> > The embedder API remains unchanged for now. We use the
> > v8::ArrayBuffer::Contents struct to hide an additional shared_ptr to
> > keep the backing store alive properly, even in the case of aliases
> > from live heap objects. Thus the embedder has a lower chance of making
> > a mistake. Long-term, we should move the embedder to a model where they
> > manage backing stores using shared_ptr to an opaque backing store object.
>
> TBR=yangguo@chromium.org
>
> BUG=v8:9380,v8:9221,chromium:986318
>
> Change-Id: If671a4a9ca0476e8f084efae46e0d2bf99ed99ef
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1731005
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63041}
TBR=yangguo@chromium.org,clemensh@chromium.org,mstarzinger@chromium.org
Change-Id: Iba55c7ab71e5642b5cb6aeb699d6fc9cf9061486
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1771795
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63461}
Before this CL the main thread fetched the background GC stats and
added them to the main runtime-call-stats table. This resulted
in background GC stats showing up in the main thread trace.
This CL switches the background GC stats to use worker thread runtime-
calls-stats table. This is now consistent with other background
components of V8 suchs background compiler and parser.
Bug: v8:9508
Change-Id: Ic4c0685ded6024f78d0f22f81419fd5677202f25
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1776083
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63459}
The maximal unoptimized frame size is calculated during instruction
selection and will be needed during code generation (it will be
applied as an offset to the stack check). Pass the information along
to the code generator through PipelineData.
Bug: v8:9534
Change-Id: Ia72cd70d57c3de2db9fe43d91b9378d8e2ab8a0a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1762302
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63451}
This CL try to use a phi as a branch condition if the control flow from the
branch is known from previous conditions. This change will open up more branch
folding opportunities for later pass.
Change-Id: I26316ab3a68c2d58d0df53691981288a996d4ba1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1674484
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63434}
This makes sure that all encodings of a table index are based upon a
single implementation in the {TableIndexImmediate} class. It also fixes
one encoding that wasn't extended to support u32v yet.
R=ahaas@chromium.org
TEST=unittests/WasmOpcodeLengthTest.VariableLength
Change-Id: If24b6dc5e303d2d9e1e91cb2640c7c13eac40198
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1768375
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63408}
This CL adds a new class WasmModuleSourceMap for source map support of WasmModule,
which maps C/C++ source code to WASM bytecode. Via this support, V8 can build a
direct map of source code and JITted code and inform profilers of it, thus the
source-code-level profiling information is presented.
Change-Id: I346f6216809ce4f3bf8b27f1e839dd4efdb00ead
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1708029
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Zhiguo Zhou <zhiguo.zhou@intel.com>
Cr-Commit-Position: refs/heads/master@{#63401}
Forbid using LoadRoot in CSA (with a bailout via CodeAssembler), so that
users are forced to use helper macros for roots, which have statically
known types. Convert all current uses of LoadRoot to use these macros,
introducing new ones where necessary.
Bug: v8:9396
Change-Id: I91214fca6e5ace7554d79605706a8a60117468fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1762526
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63398}
