This is necessary in order to support class literals boilerplates which will
contain descriptor arrays not attached to maps.
This CL introduces Heap::descriptor_array_map() which will be used only for
descriptor arrays templates created as a part of class literal boilerplate.
We don't use the new map for all descriptors for now because in order to handle
chicken-egg problem in deserializer which can be solved in a clean and readable
way only if introduce a DESCRIPTOR_ARRAY_TYPE instance type which we can't
currently do because the InstanceType enum is already "full".
Bug: v8:5799
Change-Id: I732d236b0dda2c436ab3ce3ac5967f6c66162df3
Reviewed-on: https://chromium-review.googlesource.com/758360
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49271}
This change
- adds new maps for elements, global, and named dictionaries.
- adds support to embed these dictionaries in the startup snapshot.
- adds support to embed these dictionaries in the code cache.
- refactors the rehashing logic.
TBR=mstarzinger@chromium.org, ishell@chromium.org, jgruber@chromium.org
Bug: v8:6593
Change-Id: I2455fe2a9cc6e93247940de99de5f124c2ada137
Reviewed-on: https://chromium-review.googlesource.com/756693
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49167}
This reverts commit 3877bf6f4b.
Reason for revert: failed compilation on Win64/clang:
https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20clang/builds/9015
Original change's description:
> Snapshot: support rehashing property and element dictionaries.
>
> This change
> - adds new maps for elements, global, and named dictionaries.
> - adds support to embed these dictionaries in the startup snapshot.
> - adds support to embed these dictionaries in the code cache.
> - refactors the rehashing logic.
>
> R=ishell@chromium.org, jgruber@chromium.org, mstarzinger@chromium.org
>
> Bug: v8:6593
> Change-Id: I8d9a7ba7145f1af4e6e15301a4d5611f07c77f33
> Reviewed-on: https://chromium-review.googlesource.com/753323
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#49155}
TBR=yangguo@chromium.org,mstarzinger@chromium.org,jgruber@chromium.org,ishell@chromium.org
Change-Id: I0b45d2d07da97b9a7953abf4ad24eec4ea944306
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6593
Reviewed-on: https://chromium-review.googlesource.com/755493
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49156}
This change
- adds new maps for elements, global, and named dictionaries.
- adds support to embed these dictionaries in the startup snapshot.
- adds support to embed these dictionaries in the code cache.
- refactors the rehashing logic.
R=ishell@chromium.org, jgruber@chromium.org, mstarzinger@chromium.org
Bug: v8:6593
Change-Id: I8d9a7ba7145f1af4e6e15301a4d5611f07c77f33
Reviewed-on: https://chromium-review.googlesource.com/753323
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49155}
This adds support to the KeyedLoadIC to ignore out of bounds accesses
for Strings and return undefined instead. We add a dedicated bit to the
Smi handler to encode the OOB state and have TurboFan generate appropriate
code for that case as well. This is mostly useful when programs
accidentially access past the length of a string, which was observed and
fixed for example in Babel recently, see
https://github.com/babel/babel/pull/6589
for details. The idea is to also extend this mechanism to Arrays and
maybe other receivers, as reading beyond the length is also often used
in jQuery and other popular libraries.
Note that this is considered a mitigation for a performance cliff and
not a general optimization of OOB accesses. These should still be
avoided and handled properly instead.
This seems to further improve the babel test on the web-tooling-benchmark
by around 1%, because the OOB access no longer turns the otherwise
MONOMORPHIC access into MEGAMORPHIC state.
Bug: v8:6936, v8:7014
Change-Id: I9df03304e056d7001a65da8e9621119f8e9bb55b
Reviewed-on: https://chromium-review.googlesource.com/744022
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49049}
Rename |property_attributes| to |initial_property_attributes| and ensure
that it is used as a storage of values only for AccessorInfos installed in
API Templates (i.e. ObjectTemplate and FunctionTemplate).
When an AccessorInfo is installed directly into an existing JS object
(via JSObject::SetAccessor) or into a DescriptorArray (when certain V8
objects' shapes are configured) it is not necessary to thread attributes
being set through the AccessorInfo instance.
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ibe61026f08c42549756f694129a286635ffe5769
Reviewed-on: https://chromium-review.googlesource.com/730425
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48978}
Abstract equality comparison of a BigInt and a String converts the
latter to BigInt. This conversion can fail; since we do not want to
pass a context to the comparison function, we must signal such failure
without throwing an exception.
This CL uses the existing ShouldThrow enum to configure behavior of
String-to-BigInt conversion, moving it out of Object into globals.h.
Bug: v8:6791, v8:6979
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ibb98675079b8392cf03bbcbbbd5556108500a32d
Reviewed-on: https://chromium-review.googlesource.com/734172
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48946}
and use a newly-introduced "enum class Operation" in all
other places that so far passed Token::Values around.
Also delete some related dead code along the way.
Bug: v8:6921
Change-Id: I062f396d304aa62298cfeff202e3132a4a5597c1
Reviewed-on: https://chromium-review.googlesource.com/736851
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48944}
Have JSProxy and JSGlobalProxy use the properties or hash technology
like we use for all other JSReceivers. Also unify and simplify the
code dealing with these hashes.
Bug: v8:6344, v8:6911
Change-Id: Ic995639c74211ba6f33acd73428b8c6d95bf7919
Reviewed-on: https://chromium-review.googlesource.com/737833
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48930}
This is a reland of eeaffa9f33
Original change's description:
> [objects] Introduce {CodeDataContainer} object type.
>
> This introduces the {CodeDataContainer} as a container for all mutable
> fields associated with a {Code} object. For now only the kind-specific
> flags are moved, but more fields can/will be moved gradually. The goal
> is to make all fields in the {Code} header be immutable eventually.
>
> R=jarin@chromium.org
> BUG=v8:6792
>
> Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
> Reviewed-on: https://chromium-review.googlesource.com/732987
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48902}
Bug: v8:6792
Change-Id: I31a127df4bb8ee5fedb4d73755df4deae6e1d352
Reviewed-on: https://chromium-review.googlesource.com/738109
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48928}
This reverts commit eeaffa9f33.
Reason for revert: Breaks msan compile (uninitialized value in snapshot):
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/17824
Original change's description:
> [objects] Introduce {CodeDataContainer} object type.
>
> This introduces the {CodeDataContainer} as a container for all mutable
> fields associated with a {Code} object. For now only the kind-specific
> flags are moved, but more fields can/will be moved gradually. The goal
> is to make all fields in the {Code} header be immutable eventually.
>
> R=jarin@chromium.org
> BUG=v8:6792
>
> Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
> Reviewed-on: https://chromium-review.googlesource.com/732987
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#48902}
TBR=mstarzinger@chromium.org,jarin@chromium.org
Change-Id: I74fe833b074752d640cff4aa4680f250e1bd8780
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6792
Reviewed-on: https://chromium-review.googlesource.com/738029
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48904}
This introduces the {CodeDataContainer} as a container for all mutable
fields associated with a {Code} object. For now only the kind-specific
flags are moved, but more fields can/will be moved gradually. The goal
is to make all fields in the {Code} header be immutable eventually.
R=jarin@chromium.org
BUG=v8:6792
Change-Id: I2eeba893afaba877fb6117e1f18371898c3a175e
Reviewed-on: https://chromium-review.googlesource.com/732987
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48902}
... mainly by adapting Object::Compare and
CodeStubAssembler::RelationalComparison.
TBR=rmcilroy@chromium.org
Change-Id: I34448d45b4950b9318263c4a667aa9db7d77232d
Bug: v8:6791
Reviewed-on: https://chromium-review.googlesource.com/730730
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48873}
HTMLCollection and NodeList have InstanceType
JS_SPECIAL_API_OBJECT_TYPE, and therefore always run the slow case
of GetAlignedPropertyFromInternalField. This slows down the performance
of indexedPropertyGetter for both types, which are very commonly used
in websites.
Bug:
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I36bd2cd7d9bbc19149e15174f6868b8a1f1658c8
Reviewed-on: https://chromium-review.googlesource.com/726529
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48760}
A followup CL will move feedback slot allocation to the bytecode generator,
which means it won't be done for asm_wasm code and the function will have an
incorrect vector spec. Since asm_wasm doesn't use a feedback vector, just
prevent it from being allocated for this code.
BUG=v8:6921
Change-Id: I65a06f60bd75b54e5ef0df323184aad841e26177
Reviewed-on: https://chromium-review.googlesource.com/725703
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48692}
Now that {DeoptimizationOutputData} does not exists anymore we can
rename {DeoptimizationInputData} to just {DeoptimizationData}.
R=jarin@chromium.org
Change-Id: Ib67967539d33714cc15e5d5b6dde522a9ede64b2
Reviewed-on: https://chromium-review.googlesource.com/725349
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48684}
This CL fixes all occurences that don't require special OWNER reviews,
or can be reviewed by Michi.
After this one, we should be able to reenable the readability/check
cpplint check.
R=mstarzinger@chromium.org
Bug: v8:6837, v8:6921
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: Ic81d68d5534eaa795b7197fed5c41ed158361d62
Reviewed-on: https://chromium-review.googlesource.com/721120
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48670}
New code should use nullptr instead of NULL.
This patch updates existing use of NULL to nullptr where applicable,
making the code base more consistent.
BUG=v8:6928,v8:6921
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I4687f5b96fcfd88b41fa970a2b937b4f6538777c
Reviewed-on: https://chromium-review.googlesource.com/718338
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48557}
There was a helpful TODO telling where it should live.
BUG=v8:5402,v8:6921
Change-Id: Id9022c72c9e7de8d76ea0db964217b766299195d
Reviewed-on: https://chromium-review.googlesource.com/718337
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48524}
This is a reland of 3d023952f2
Original change's description:
> [runtime] Make JSFunction::prototype_or_initial_map field optional.
>
> Functions that don't have prototype need to store neither prototype nor
> initial map, so the |prototype_or_initial_map| field is not required for
> such maps.
>
> Bug: v8:6459
> Change-Id: I4b3066bd6a4fed42c19f217bae82a8bce552bdca
> Reviewed-on: https://chromium-review.googlesource.com/570250
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46840}
Bug: v8:6459
Change-Id: I54e3516ea70474c6d4f873f7b91e74cb8a7d622a
Reviewed-on: https://chromium-review.googlesource.com/583307
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48523}
In the current implementation of hash code for objects (identity hash),
we do not bother to shift the hash when we retrieve it from the
hash-length bitfield in a property array. (Even worse, we store shifted
value even if we do not have property array or inside dictionaries.)
That means that the hash-code for objects is always divisible by 1024.
Since our hash table uses a simple masking with (2^logsize - 1) to
obtain the bucket, we get terrible hash collisions - essentially, our
hash table degenerates to a linked list for fewer than 1024 elements.
This CL always shifts the hash code so that the value in the lowest
21 bits is uniformly distributed.
This results in big improvements on medium to large hash tables.
A program storing 1M elements into a WeakMap gets roughly
17x faster. A program retrieving 1M elements from a Map
improves even more dramatically (>100x).
const a = [];
for (let i = 0; i < 1e6; i++) a[i] = {};
const m = new Map();
console.time("Map.set");
for (let i = 0; i < 1e6; i++) {
m.set(a[i], i);
}
console.timeEnd("Map.set");
console.time("Map.get");
let s = 0;
for (let i = 0; i < 1e6; i++) {
s += m.get(a[i]);
}
console.timeEnd("Map.get");
const w = new WeakMap();
console.time("WeakMap.set");
for (let i = 0; i < 1e6; i++) {
w.set(a[i], i);
}
console.timeEnd("WeakMap.set");
Before the fix:
Map.set: 157.575000
Map.get: 28333.182000
WeakMap.set: 6923.826000
After the fix:
Map.set: 178.382000
Map.get: 185.930000
WeakMap.set: 409.529000
Note that Map does not suffer from the hash collision on insertion because
it uses chaining (insertion into linked list is fast regardless of size!), and
we cleverly avoid lookup in the hash table on update if the key does not have
identity hash yet. This is in contrast to the WeakMap, which uses
open-addressing, and deals with collisions on insertion.
Bug: v8:6916
Change-Id: Ic5497bd4501e3b767b3f4acb7efb4784cbb3a2e4
Reviewed-on: https://chromium-review.googlesource.com/713616
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48480}
This introduces a ToNumeric conversion to the runtime and interpreter.
ToNumeric behaves like ToNumber, except that it also lets BigInts pass.
Bug: v8:6791
Change-Id: Idf9d0b5d283638459fe5893de41cc120356247a7
Reviewed-on: https://chromium-review.googlesource.com/707013
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48440}
This allows us to remove the loop while calculating the hash value and
just use the HashMask as the mask for ComputeIntegerHash. This
previously overflowed on 32-bit systems failing the Smi::IsValid
check.
Bug: v8:6404
Change-Id: I84610a7592fa9d7ce4fa5cef7903bd50b8e8a4df
Reviewed-on: https://chromium-review.googlesource.com/702675
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48319}
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}
Good thing this class is actually being unused. Vector<T> is iterable,
so it should just be iterated using a foreach loop.
R=mstarzinger@chromium.org
Change-Id: Ieb6729e5b1336888989d5ec6128b0782b158b1f7
Reviewed-on: https://chromium-review.googlesource.com/695525
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48279}
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}
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}
This improves performance of ArrayBuffer.isView by roughly 2.5x itself,
and enables optimizations across ArrayBuffer.isView calls, i.e. map
checks can be eliminated across. This was discovered in a related Node
pull request (https://github.com/nodejs/node/pull/15663).
Bug: v8:6868
Change-Id: I1d56ec385f8daa0e1d44d3bc4d6c9a5558ba4522
Reviewed-on: https://chromium-review.googlesource.com/691660
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48247}
And some refactoring to the existing code for LiveEdit.
R=jarin@chromium.org
Change-Id: Ic1d626db9722b39cbcd83bf6878fc24d6094e612
Reviewed-on: https://chromium-review.googlesource.com/687014
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48233}
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}
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}
The serializer performs two passes over the code. The first pass copies out the
code content verbatim, the second pass visits references recorded in the reloc
info.
So far the first pass is implicit and happens as part of the second pass, when
we encounter a non-HeapObject reference when iterating the code object. That
however does not work for internal references. So we hit an assertion if the
first non-HeapObject reference we see is an internal reference.
This change explicitly triggers the first pass.
R=petermarshall@chromium.org
Bug: v8:6817
Change-Id: I1ee9949e10b7d9409986da83be22ac6287785f9f
Reviewed-on: https://chromium-review.googlesource.com/663867
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48010}
BigInt is a new primitive type of arbitrary precision integers,
proposed in https://tc39.github.io/proposal-bigint.
This CL introduces a corresponding instance type, map, and C++
class to V8 and adds BigInt support to a few operations (see the
test file). Much more is to come. Also, the concrete representation
of BigInts is not yet fixed, currently a BigInt is simply a wrapped
Smi.
Bug: v8:6791
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ia2901948efd7808f17cfc945f0d56e23e8ae0b45
Reviewed-on: https://chromium-review.googlesource.com/657022
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47956}
Since we don't have a full-codegen compiler anymore, we no longer
generate Code::FUNCTION kind. Nice! Here is some cleanup.
Bug: v8:6409
Change-Id: I05634e4ca85c4037b49a4346f4e8bae8042b8762
Reviewed-on: https://chromium-review.googlesource.com/657817
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47951}
This removes the ability to create a copy of a code-stub with a given
replacement pattern applied. It is in preparation of having the ability
to write-protect code objects.
R=ishell@chromium.org
BUG=v8:6409
Change-Id: Id7528b3bfc53ece73d8c58b0ac96c6e5702a9d45
Reviewed-on: https://chromium-review.googlesource.com/654605
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47914}
Given that we no longer need to iterate over lists of optimized JS functions
(c.f. https://chromium-review.googlesource.com/c/v8/v8/+/647596), we can
remove this field. Thus saving the size of one pointer per function.
Bug: v8:6637
Change-Id: If77951f2eddba33ba350fa9ddf03a4edb3f7c7d8
Reviewed-on: https://chromium-review.googlesource.com/652373
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Cr-Commit-Position: refs/heads/master@{#47875}
Use int instead of byte to store the source position when computing a
location based on the stack trace stored in an error object.
Also add tests, since this code path was not covered before (not even
for small position where it would have succeeded).
Also, add some comments about which positions are 0-based and 1-based.
R=titzer@chromium.org
Change-Id: I313dcd6c47b77093ced9bb687415715d04eafb97
Reviewed-on: https://chromium-review.googlesource.com/645527
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47739}
Use the DEFINE_FIELD_OFFSET_CONSTANTS macro to define the fields in the
BytecodeArray layout description.
Change-Id: I89ff2d7cd967aa1a503cbedd5d95dcd80f4d038c
Reviewed-on: https://chromium-review.googlesource.com/643130
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47713}
Lazy deserialization needs to determine the underlying builtin by looking at
the SharedFunctionInfo.
This packs the builtin_id into the SFI::function_data field, and adds
convenience functions to Code as a drive-by addition.
Bug: v8:6624
Change-Id: I59093815aa6937342302153ebc95dd60edb0064e
Reviewed-on: https://chromium-review.googlesource.com/641490
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47712}
Introduce a proper empty_descriptor_array, which has the proper layout
(length is 2 and the two fields are set properly). Also add a special
EnumCache class and a matching empty_enum_cache. The contract now is
that we only need to check the EnumLength on the map to know whether we
are allowed to use the enum cache. This greatly simplifies the handling
of the enum cache (and also the descriptor arrays), especially for the
future work on optimizing keyed access via the enum cache indices.
Bug: v8:6702
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I5ef517a3041163cd65ef003f691139ea52233e83
Reviewed-on: https://chromium-review.googlesource.com/641030
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47697}
Instead of using a word to store the status of the promise, this
patch uses 2 bit on flags.
Bug: v8:5046
Change-Id: Ic651338230dbe1704c68de8652676f236a3298f0
Reviewed-on: https://chromium-review.googlesource.com/634623
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47628}
This moves Module and other module-related classes and definitions out
of src/objects{.h,-inl.h,.cc} into src/objects/module{.h,-inl.h,.cc}.
Also moves the contents of src/objects/module-info.h there.
R=marja@chromium.org
Bug: v8:1569, v8:5402
Change-Id: I49064bb4a5c5a6f409274c287e06e8dda351d615
Reviewed-on: https://chromium-review.googlesource.com/626818
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47540}
The initialization code of all modules must have been run
before running any module's main code. This should have been
fixed quite a while ago as part of another CL but somehow
wasn't.
In the process of fixing it now, I'm also moving the initialization
phase out of Evaluate into Instantiatiate. This corresponds more
closely to the specification and avoids confusion.
Bug: v8:1569
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I3ea5d6be0f5d371e6a4c641778c51762f1867dc8
Reviewed-on: https://chromium-review.googlesource.com/620653
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47537}
This CL:
- removes the trampoline pc from deoptimization input
data and deoptimization state. This is no longer needed given
that we added this information to the safepoint table in
https://chromium-review.googlesource.com/c/v8/v8/+/596027).
This should also fixed the regression mentioned in
https://bugs.chromium.org/p/chromium/issues/detail?id=752873
- searches for the exception handler in the safepoint table.
- removes the code used for patching which is no longer needed.
Bug: v8:6563
Change-Id: I6cedc18c371f5707b7e0e1a8da409375ce1ebe5e
Reviewed-on: https://chromium-review.googlesource.com/595547
Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47507}
LengthAndHashOffset describes the value stored in the offset better.
Bug: v8:6404
Change-Id: Ie5ea2a362c54aa03e0a4e314d1adb8b91d74a044
Reviewed-on: https://chromium-review.googlesource.com/624458
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47503}
Code aging is no longer supported by any remaining compilers now
that full codegen has been removed. This CL removes all vestiges of
code aging.
BUG=v8:6409
Change-Id: I945ebcc20c7c55120550c8ee36188bfa042ea65e
Reviewed-on: https://chromium-review.googlesource.com/619153
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47501}
There's no need for these to be static.
Bug: v8:5717
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ia704cdcb9ee9666c7724b78d58c56217cd5876ae
Reviewed-on: https://chromium-review.googlesource.com/624869
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47490}
This no longer causes allocation, so it's safe to unhandlify.
This will allow us to use directly call into C++ (via CallCFunction)
to calculate the hash instead of going through the runtime (via
%GenericHash).
Bug: v8:5717
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ia561efb4d89d7a3d10c28913537b45b3ce477bb3
Reviewed-on: https://chromium-review.googlesource.com/624519
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47489}
Change-Id: Icd5dcb9fe58fec7d405e03ca09648d2e426bd204
Reviewed-on: https://chromium-review.googlesource.com/452458
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47465}
This is a reland of decf5750c6
This patch fixes the hash code migration in the backing store
transition case from Smi to PropertyArray in the IC system and
Turbofan. Also, adds tests.
Bug: v8:6413, v8:6404
Original change's description:
> [runtime] Store hash code in length field
>
> Store the hash code in 21 bits of the length field.
>
> Change the GetIdentityHash API to be unhandlified, since there's no
> property lookup anymore.
>
> Update js/ and test/ to match new API and expections.
>
> Bug:
> Change-Id: I8dc75de4021f59e79b45f3f38ec997c3b3687b24
> Reviewed-on: https://chromium-review.googlesource.com/589688
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47259}
Change-Id: I69289113c4b7978c46f6f9373cc972086ecb6822
Bug:
Reviewed-on: https://chromium-review.googlesource.com/614903
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47459}
This removes:
- CodeBreakIterator for FCG code.
- RelocModes for debug breaks.
- Code generator for debug break slots.
- GC support for debug break slots.
- Code flag to indicate code with debug break slots.
- Builtin type DBG.
- Mechanisms to replace FCG code in the debugger and LiveEdit.
- Runtime entry to the debugger from debug break slots.
R=bmeurer@chromium.org, rmcilroy@chromium.org, ulan@chromium.org
Bug: v8:6409
Change-Id: I5662c8800e3ef1b1584ad107bfe0aae26c9d8abb
Reviewed-on: https://chromium-review.googlesource.com/613263
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47364}
Removes the new.target slot from the interpreter's fixed frame. Instead
adds a field to BytecodeArray to get the bytecode's incoming
new.target or generator object register. The InterpreterEntryTrampoline
then sets this register with the incoming new.target (or generator object)
when the function is called. This register can be directly the new.target
or generator object variable if they are LOCAL location, otherwise it is a
temporary register which is then moved to the variable's location during the
function prologue.
This fixes a hack in the deoptimizer where we would set the new.target fixed
slot to undefined in order to avoid extending it's lifetime through the
optimized code - now it's just a standard register and can be optimized away
as normal.
Bug=v8:6644
Change-Id: Ieb8cc34cccefd9fb6634a90cbc77c6002a54f2ae
Reviewed-on: https://chromium-review.googlesource.com/608966
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47320}
Removes the pathways to use Full-Codegen from compiler.cc. Also removes all
paths to optimize using AstGraphBuilder, which relies on Full-codegen.
Cleans up ast-numbering, runtime-profiler and some runtime functions to
remove now dead code.
This makes Full-codegen and AstGraphBuilder dead, but doesn't remove their
code yet, that will be done in a followup CL to keep things reviewable.
BUG=v8:6409
Change-Id: I3901ff17d960b2bb084cef0cb39fa16cb8419881
Reviewed-on: https://chromium-review.googlesource.com/583328
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47277}
The heuristic for deciding whether to normalize elements in a JSArray
should not depend on the current old generation size, for the sake of
predictability. This also wouldn't work when we start inlining this
into optimized code, where we'd bake in the max old generation size
value at the time of optimization.
Bug: v8:6399
Change-Id: Ie30d8855953b8fa97b86b18d9eac6e5de87e5aa9
Reviewed-on: https://chromium-review.googlesource.com/609013
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47272}
Previously we could not support these due to their unique memory layout
including off-heap backing store allocations. We now serialize these
allocations and then fix-up references to them in the PostProcess step
of deserialization.
Bug: v8:6691
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Ic215049c06e6ee655bd17c11dfab0d8630568a84
Reviewed-on: https://chromium-review.googlesource.com/597709
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47271}
This reverts commit decf5750c6.
Reason for revert: broken layout tests
Original change's description:
> [runtime] Store hash code in length field
>
> Store the hash code in 21 bits of the length field.
>
> Change the GetIdentityHash API to be unhandlified, since there's no
> property lookup anymore.
>
> Update js/ and test/ to match new API and expections.
>
> Bug:
> Change-Id: I8dc75de4021f59e79b45f3f38ec997c3b3687b24
> Reviewed-on: https://chromium-review.googlesource.com/589688
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47259}
TBR=ulan@chromium.org,jkummerow@chromium.org,mstarzinger@chromium.org,cbruni@chromium.org,gsathya@chromium.org
Change-Id: I32db9c20a51b2401464924cafea502628a0d0b92
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/609322
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47260}
Store the hash code in 21 bits of the length field.
Change the GetIdentityHash API to be unhandlified, since there's no
property lookup anymore.
Update js/ and test/ to match new API and expections.
Bug:
Change-Id: I8dc75de4021f59e79b45f3f38ec997c3b3687b24
Reviewed-on: https://chromium-review.googlesource.com/589688
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47259}
This reverts commit 15ef03cbf3.
Reason for revert: Found the following bugs
Bug: chromium:752846, chromium:752712, chromium:752850
Original change's description:
> Reland "[builtins] Port getting property from Proxy to CSA"
>
> This reland is after fix in [heap] Delete wrong DCHECK.
> It includes moving ProxyGetProperty to its own stub to reduce
> binary size.
>
> This is a reland of 47a97aa53b
> Original change's description:
> > [builtins] Port getting property from Proxy to CSA
> >
> > Bug: v8:6559, v8:6557
> > Change-Id: If6c51f5483adb73ddd2495cede5d85e887a3c298
> > Reviewed-on: https://chromium-review.googlesource.com/589212
> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Commit-Queue: Maya Lekova <mslekova@google.com>
> > Cr-Commit-Position: refs/heads/master@{#47113}
>
> Bug: v8:6559, v8:6557
> Change-Id: I76acd97ba1acb62b7e7983db1741441d997050f0
> Reviewed-on: https://chromium-review.googlesource.com/600215
> Commit-Queue: Maya Lekova <mslekova@google.com>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Franziska Hinkelmann <franzih@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47159}
TBR=jkummerow@chromium.org,mstarzinger@chromium.org,franzih@chromium.org,jgruber@chromium.org,ishell@chromium.org,bmeurer@chromium.org,mslekova@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I51bef25a031b02cf4deab11282473acae57f1ed3
Reviewed-on: https://chromium-review.googlesource.com/603708
Commit-Queue: Maya Lekova <mslekova@google.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47200}
The interpreter was not able to call imported wasm functions (hitting
UNIMPLEMENTED). This CL fixes this by creating a "CWasmEntry", which is
signature-specific. It has JS linkage and receives the wasm code object
to call and a buffer containing all arguments (similar to the
interpreter entry). It loads all arguments from the buffer and calls the
given code object.
The c-wasm-entry code objects are cached per instance, such that we
only create them once per signature.
These wasm entry stubs will also allow us to call back to compiled code
from the interpreter, which we might want to do to reduce the slowdown
of executing wasm for debugging.
R=titzer@chromium.org
Bug: chromium:735792
Change-Id: I7fecec3a7bec62a9de40fff115b684759b12a28b
Reviewed-on: https://chromium-review.googlesource.com/600308
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47195}
As of https://chromium-review.googlesource.com/600968 the CallIC no
longer supports AllocationSite feedback for [[Call]], so we can drop
the TurboFan bits that deal with AllocationSites for JSCall nodes as
well. This further simplifies the handling of the Array constructor.
Drive-by-fix: Rename Builtins::kArrayCode to Builtins::kArrayConstructor
for sake of consistency.
Bug: v8:6399
Change-Id: I9e6a684fc00dd72e25f925db5f407c3f3f715873
Reviewed-on: https://chromium-review.googlesource.com/602354
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47194}
