- 04 Mar, 2019 13 commits
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peterwmwong authored
Bug: v8:8906 Change-Id: I7a07482d2d5de13de11fa2611e3c6ae18439e820 Reviewed-on: https://chromium-review.googlesource.com/c/1493136 Commit-Queue: Peter Wong <peter.wm.wong@gmail.com> Reviewed-by:
Simon Zünd <szuend@chromium.org> Reviewed-by:
Michael Stanton <mvstanton@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#60007}
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Benedikt Meurer authored
In the early days of Chrome when we used WebKit there was no support for ASCII strings on the C++ side, so we put a hint onto these two-byte strings that said "string only contains one byte data", such that internally in V8 when these were involved in string operations, we could instead create the *cheaper* one byte strings. Nowadays Blink properly supports one-byte string representations and this additional hint only comes with overhead, since we check it in quite a few places (i.e. on the hot path for string concatenation), plus we end up consuming more memory due to the additional string maps. Removing the hint also frees one bit in the InstanceType zoo for strings. This alone improves performance on the `bench-dom-serialize.js` test case by around **3%**. Tbr: mstarzinger@chromium.org Bug: v8:6622, v8:8834, v8:8939 Cq-Include-Trybots: luci.chromium.try:linux-blink-rel Change-Id: I0753f2859cee7b5a37b6f0da64d8ec39fcb044ff Doc: https://bit.ly/fast-string-concatenation-in-javascript Reviewed-on: https://chromium-review.googlesource.com/c/1498478 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#60006}
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Igor Sheludko authored
Bug: v8:7703 Change-Id: I3d521423eec725915d1a197c79c076ad54eeef14 Reviewed-on: https://chromium-review.googlesource.com/c/1496368Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#60005}
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Sven Sauleau authored
Removes the result_size parameter in TFC definitions which can be infered from the provided CallInterfaceDescriptor. Previously, the result size was added to support stubs with custom linkage. However, In pratice, the size don't differ from the provided CallInterfaceDescriptor (given that it's a DCHECK) and use mostly JS linkage (only one return). Change-Id: I8efdb3e3ce1a470735dac84ec6be506e071d2756 Bug: v8:6116 Reviewed-on: https://chromium-review.googlesource.com/c/1495554 Commit-Queue: Sven Sauleau <ssauleau@igalia.com> Reviewed-by:
Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#60004}
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Dan Elphick authored
This adds a new method Isolate::LocaleConfigurationChangeNotification that clears the cached Locale allowing new Locales to be picked up in later Locale operations. It moves Date::DateTimeConfigurationChangeNotification to Isolate (deprecating the old one) so that the configuration change methods are found together. Change-Id: Iffc15e326933c5bc5baf2f0eafdd5c148b8279a8 Reviewed-on: https://chromium-review.googlesource.com/c/1491608Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/master@{#60003}
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Dan Elphick authored
Removes JavaScriptFrame::CollectTopFrameForICStats whose last usage was removed in https://chromium-review.googlesource.com/626016. Bug: v8:8834 Change-Id: I9ffad0c712816696c56b746a137bed30362550bc Reviewed-on: https://chromium-review.googlesource.com/c/1496365 Auto-Submit: Dan Elphick <delphick@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#60002}
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peterwmwong authored
As the TODO's indicate, these helpers only used by TypedArray#join when it was implemented in JS. As of https://chromium-review.googlesource.com/c/v8/v8/+/1369330 TypedArray#join is now implemented Torque and was optimized in a way that no longer requires these helpers anymore. Bug: v8:7624 Change-Id: I1d1ff80235a12feb3846ff92764e8593ce7c72c9 Reviewed-on: https://chromium-review.googlesource.com/c/1498692Reviewed-by:
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Dan Elphick authored
BytecodeArray::SourcePosition and BytecodeArray::SourceStatementPosition have no implementations and are never called. Bug: v8:8834 Change-Id: I919c871795084766856dfbff5344c037b6f33dd0 Reviewed-on: https://chromium-review.googlesource.com/c/1497009 Commit-Queue: Dan Elphick <delphick@chromium.org> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Auto-Submit: Dan Elphick <delphick@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#59998}
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Yu Yin authored
Change-Id: I3be3dc8815015c0215d3e3d655394850d85db871 Reviewed-on: https://chromium-review.googlesource.com/c/1490812Reviewed-by:
Predrag Rudic <prudic@wavecomp.com> Reviewed-by:
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Yu Yin authored
After 54a18895, Bug:7464, the permission of the page is read only, but this function need write permission. Since this function is not used, just remove it. Change-Id: I5a5976ab773bd808920893bbd2e3d9796e89e804 Reviewed-on: https://chromium-review.googlesource.com/c/1490813Reviewed-by:
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Yu Yin authored
Change-Id: I2264b7850f2c091bfd28d90c5bfe36dcfe6e8a11 Reviewed-on: https://chromium-review.googlesource.com/c/1369908Reviewed-by:
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Benedikt Meurer authored
Remove the duplication of the allocation logic via the AllocateOneByteConsString and AllocateTwoByteConsString helpers, and instead just have a diamond to figure out the result map. This reduces code size of the StringAdd_CheckNone builtin and even seems to be beneficial performance wise. It seems to improve the performance on the `bench-dom-serialize.js` test by around 1% just doing this. Drive-by-fix: Remove the `flags` from CodeStubAssembler::StringAdd() and its helpers, since we no longer support pretenuring of string additions (for quite a while now). Bug: v8:8834, v8:8939 Change-Id: Ia23e02c974b5f572930fcd45be0643094ab2fa98 Doc: https://bit.ly/fast-string-concatenation-in-javascript Reviewed-on: https://chromium-review.googlesource.com/c/1498133 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
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Simon Zünd authored
Stringification of Json wrongly used quotes for "true", "false" and "null". Drive-by: Manually flush std::cout when sending messages. This might fix the server on windows. R=tebbi@chromium.org Bug: v8:8880 Change-Id: Ie499595a1b429514c5d8b1d3ece24f4690ece02e Reviewed-on: https://chromium-review.googlesource.com/c/1498132Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Simon Zünd <szuend@chromium.org> Cr-Commit-Position: refs/heads/master@{#59992}
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- 01 Mar, 2019 24 commits
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Anton Bikineev authored
This is a cosmetic change aimed to reduce compilation time spent on instantiating things and potentially reduce code (in case instantiated specializations are in different shared objects). Change-Id: I719b4d376a0d707f4724555a2f404327d19d8477 Reviewed-on: https://chromium-review.googlesource.com/c/1484298 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
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Tom Tan authored
When running under simulator, all arm64 JIT instructions are interpreted by simulator via normal memory read, then no need to do icache/dcache flush. Also when running under simulator, cache_type_register_ is set to 0 explicitly in above CacheLineSizes class, which results in 0 value in both dstart and istart, then causes flush on this incorrect range. Bug: chromium:893460 Change-Id: Ief6cb09a0e89f7ede0761ad676ea6a882e9f4600 Reviewed-on: https://chromium-review.googlesource.com/c/1492514 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#59987}
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Toon Verwaest authored
Change-Id: I1654da286ae15bc028803286a188b5d89111c3d3 Reviewed-on: https://chromium-review.googlesource.com/c/1495983 Commit-Queue: Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#59986}
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Sathya Gunasekaran authored
I thought about potentially adding the identifer ref to the error but that would require allocating a new string or at the very least increasing the size of the resulting cons string. Given that the parser is pretty performance sensitive, I've decided to not display the identifier. Previously, the error was: _test.js:3: Error a[foo].c = () => { throw Error(); }; ^ Error at a.(anonymous function).c (_test.js:3:26) at _test.js:5:1 With this patch, the error becomes: _test.js:3: Error a[foo].c = () => { throw Error(); }; ^ Error at a.<computed>.c (_test.js:3:26) at _test.js:5:1 Bug: v8:8823 Change-Id: I557b3517e317652c447ca06c5a400e9625353d9b Reviewed-on: https://chromium-review.googlesource.com/c/1495017 Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:Mathias Bynens <mathias@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/master@{#59985}
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Georgia Kouveli authored
This is a port of the improvements to the ArgumentsAdaptorTrampoline that previously landed for x64. It skips the arguments adaptor frame creation if the callee cannot observe the actual arguments (as indicated by the "is_safe_to_skip_arguments_adaptor" bit on the SharedFunctionInfo), and instead just massages the current stack frame appropriately (either by pushing more undefineds in case of under application, or by removing the superfluous arguments in case of over application). Due to the 16 byte stack alignment requirement on arm64, we only skip the arguments adaptor frame creation when the difference between the expected and the actual argument number is even. When it is odd, we would still need to copy the actual arguments in the existing frame to account for the padding, which would defeat the point of the improvement. Bug: v8:8895 Tbr: jgruber@chromium.org Doc: http://bit.ly/v8-faster-calls-with-arguments-mismatch Change-Id: I7f13f6f0ba86edb483e088aac145cfcf9c937fef Reviewed-on: https://chromium-review.googlesource.com/c/1491633 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#59983}
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Maciej Goszczycki authored
Bug: v8:8562 Change-Id: I05421c9fa96e6c1d424c6d529922cde02ba2dc37 Reviewed-on: https://chromium-review.googlesource.com/c/1494760Reviewed-by:
Dan Elphick <delphick@chromium.org> Commit-Queue: Maciej Goszczycki <goszczycki@google.com> Cr-Commit-Position: refs/heads/master@{#59981}
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Daniel Bratell authored
There is both a v8::internal::SourcePosition and a v8::internal::torque::SourcePositon and in jumbo builds an unqualified SourcePositon ended up referring to the wrong one since nobody had told the compiler that the correct one existed. This broke jumbo builds of v8 cctests on Windows (because only in Windows will the compiler look for the symbol in a parent namespace). R=szuend@chromium.org Bug: v8:8880 Change-Id: I7c9ebf68629642b65e86d6a8ae458ec5ff01f2ce Reviewed-on: https://chromium-review.googlesource.com/c/1496972Reviewed-by:
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Mike Stanton authored
If we make use of this in the generic Array.prototype.filter case we get a performance boost of over 60%. Bug: v8:8213, chromium:920187 Change-Id: Ia116a852f355a9f037850aee86db7284f0023929 Reviewed-on: https://chromium-review.googlesource.com/c/1484297Reviewed-by:
Daniel Clifford <danno@chromium.org> Commit-Queue: Michael Stanton <mvstanton@chromium.org> Cr-Commit-Position: refs/heads/master@{#59979}
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Tobias Tebbi authored
To make it obvious these are not defined in C++. Bug: v8:7793 Change-Id: Ib846023992e32ddd10dadc3834ce42b7604a1f48 Reviewed-on: https://chromium-review.googlesource.com/c/1495993Reviewed-by:
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Simon Zünd authored
This CL changes 'Value' to use an 'Identifier' for its name, where the source position represents the point where it is defined. This is used to support "goto definition" for constants and extern constants. R=tebbi@chromium.org Bug: v8:8880 Change-Id: Ifb9ff08b36cbd9fb2691dbae579d2df29edd651d Reviewed-on: https://chromium-review.googlesource.com/c/1495986Reviewed-by:
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Seth Brenith authored
I tried to use more specific union types where appropriate, even though many of these fields are accessed as Object from C++. Bug: v8:7793 Change-Id: I771d9b6459bdc1413019f8ff5ddfd611d1adf61f Reviewed-on: https://chromium-review.googlesource.com/c/1490573 Commit-Queue: Tobias Tebbi <tebbi@chromium.org> Reviewed-by:
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Junliang Yan authored
Port 4f62b4bb Original Commit Message: This is a port of the improvements to the ArgumentsAdaptorTrampoline that previously landed for x64. It skips the arguments adaptor frame creation if the callee cannot observe the actual arguments (as indicated by the "is_safe_to_skip_arguments_adaptor" bit on the SharedFunctionInfo), and instead just massages the current stack frame appropriately (either by pushing more undefineds in case of under application, or by removing the superfluous arguments in case of over application). R=bmeurer@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, miladfar@ca.ibm.com BUG= LOG=N Change-Id: I94824c4b3d94f7c93c7526c865b82649426cd3a4 Reviewed-on: https://chromium-review.googlesource.com/c/1495014Reviewed-by:
Milad Farazmand <miladfar@ca.ibm.com> Commit-Queue: Junliang Yan <jyan@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#59974}
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Milad Farazmand authored
gcc requires the <algorithm> header for compiling std::sort. This issue is not present when using Clang. Change-Id: Ief7bfd6152754f71194c784b09dce39e357ddd5c Reviewed-on: https://chromium-review.googlesource.com/c/1496280Reviewed-by:
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Mike Stanton authored
This CL moves the following builtins from CSA to Torque: TypedArray.prototype.forEach TypedArray.prototype.reduce TypedArray.prototype.reduceRight A space-saving decision was made in the design -- instead of emitting versions of the central loop for each ElementsKind, a function pointer which knows how to read from the appropriate TypedArray ElementsKind is constructed at the outset, and passed into the loop. This enormously reduces codesize for the TypedArray builtins. We'll have to see if the overhead of the builtin call affects performance too adversely. BUG: v8:8906 Change-Id: I808cd70f58ddbde18f85e5b2a9be0b883a3f6647 Reviewed-on: https://chromium-review.googlesource.com/c/1484292Reviewed-by:
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Simon Zünd authored
Instead of accessing JsonValue struct fields directly, typed accessors check that the tag matches with the type access. Drive-by: The factory methods are now static methods on the JsonValue type itself, making call-sites more readable. R=tebbi@chromium.org Bug: v8:8880 Change-Id: I49b37b3ba8eaf1153b8aa93ea08913077c923fdc Reviewed-on: https://chromium-review.googlesource.com/c/1495559 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by:
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Toon Verwaest authored
Change-Id: Ie8109300ce134f3f9d0c1619f1375c29af2c8fa6 Reviewed-on: https://chromium-review.googlesource.com/c/1494758Reviewed-by:
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Andreas Haas authored
The interpreter is set up specially in cctests to allow more direct testing. This requires sometimes to write special testing code in the interpreter which is different than production code. This CL fixes one instance of testing code which deals with indirect calls. In production code, indirect calls go through the indirect function table which can change over time. In cctests, however, the indirect function table is not set up completely. In cctests the interpreter uses information from the module instead to acquire the target of an indirect call. In that testing code, calls to imported JS functions were not handled. This handling gets added with this CL. CC=fgm@chromium.org R=titzer@chromium.org Bug: v8:7431 Change-Id: I3b90d4ea8fec2633c010dd8359814440c7988509 Reviewed-on: https://chromium-review.googlesource.com/c/1495560Reviewed-by:
Ben Titzer <titzer@chromium.org> Commit-Queue: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#59965}
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tzik authored
The performance regression comes from the extra time of ExtractHandlerContext called by TriggerPromiseReaction, On the previous code, it takes the current Context from Isolate, and on the typical case of the new code, the Context is taken from the promise reaction function, that adds a few memory read ops and a few conditional branches. This CL adds Label::kDeferred to non-typical cases of ExtractHandlerContext, so that newly added instructions have smaller impact under the speculative execution. On a local benchmark, this fixes half of the regression. Bug: chromium:936717 Change-Id: I34ce858f77d7d604dd596711a239160ed8dac383 Reviewed-on: https://chromium-review.googlesource.com/c/1496774 Commit-Queue: Taiju Tsuiki <tzik@chromium.org> Reviewed-by:
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Yu Yin authored
update the missing file in a2d9924c. see https://chromium-review.googlesource.com/c/1470129 port 591408cb to mips. see https://chromium-review.googlesource.com/c/1482915 Update the missing file in a4b19dcc. see https://chromium-review.googlesource.com/c/1460474 Update the missing file in ad3546ab. see https://chromium-review.googlesource.com/c/1434036 Fix compiler warnings. Change-Id: Ie47b1d5aaa3c7f558def92255ce135b0fc0406ec Reviewed-on: https://chromium-review.googlesource.com/c/1490995 Commit-Queue: Michael Hablich <hablich@chromium.org> Reviewed-by:
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Clemens Hammacher authored
The {AsyncCompileJob} can now always be deleted when initial compilation finished. The previous conditions are redudant, since {baseline_compilation_finished()} is always true when calling {FinishModule()}. R=ahaas@chromium.org Bug: v8:8689 Change-Id: I95c0cf83943630b83216c83db0edbabdfbd71284 Reviewed-on: https://chromium-review.googlesource.com/c/1494008Reviewed-by:Andreas Haas <ahaas@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#59962}
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Simon Zünd authored
Design Doc: https://goo.gl/9G9d9k The initial prototype consists of a few parts: The VS Code extension is now built using TypeScript. The build artifact is checked-in along side the extension. The extension now starts up the language server when it is activated. The path to the LS executable is configurable via VS Code settings. The language server is a separate executable. It adds a light-weight object model on top of a Json Parser for reading/writing LSP requests and responses. The current server is very much bare-bones featurewise: - Tell the client that the server can handle "goto definition" - Recompile when Torque files change - Goto definition support for Macros/Builtins, local variables and arguments. R=mathias@chromium.org, mvstanton@chromium.org, tebbi@chromium.org Bug: v8:8880 Change-Id: Ie9b433e64ee63e9aa757b6bf71e5d52beb15b079 Reviewed-on: https://chromium-review.googlesource.com/c/1494354Reviewed-by:
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Clemens Hammacher authored
This pooling introduces severe lock contention for Liftoff compilation, since each compilation uses its own Zone which does at least one segment allocation. It's also unclear whether pooling improves performance, since {malloc} should implement a similar pooling mechanism, but better optimized for multithreaded uses. Feel free to revert if this introduces significant regressions. R=verwaest@chromium.org Bug: v8:8916 Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel Change-Id: Iaf988bed898e35700f5f7f3310df8e01918de4c9 Reviewed-on: https://chromium-review.googlesource.com/c/1491632 Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: -
Matt Gardner authored
The original was reverted for breaking webkit layout tests: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/30270 It also caused the following clusterfuzz failures: chromium:935832 This was a correctness bug due to not properly handling the case of arrays with prototypes other than Array.prototype. Accesses that were TheHole were not being handled property, both in bounds holes in holey arrays and out of bounds on either holey or packed arrays. Handling was incorrect both in access-assembler and in Turbofan. chromium:935932 This bug was that there was no handling for Has checks on the global object. Turbofan was emitting code for a store (the 'else' condition on 'access_mode == AccessMode::kLoad'). It hit a DCHECK in debug builds but in release could show up in different places. This is the bug that caused the webkit layout test failure that led to the revert. Both bugs are fixed by in CL, and tests are added for those cases. Bug: v8:8733, chromium:935932, chromium:935832 Change-Id: Iba0dfcfce6e15d2c0815a7670ece67bc13ba1925 Reviewed-on: https://chromium-review.googlesource.com/c/1493132Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Reviewed-by:
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Johannes Henkel authored
... to b13e24ccee66d7e0590ce1266db9c906e3648561 to support UTF16 strings with binary protocol (v8). Original review here: https://chromium-review.googlesource.com/c/deps/inspector_protocol/+/1493312 Change-Id: I401c5d52d233805dc681bb23b40df99f2ea14992 Reviewed-on: https://chromium-review.googlesource.com/c/1493291 Commit-Queue: Johannes Henkel <johannes@chromium.org> Reviewed-by:
Pavel Feldman <pfeldman@chromium.org> Cr-Commit-Position: refs/heads/master@{#59956}
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- 28 Feb, 2019 3 commits
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Tom Tan authored
Assembler::AbortedCodeGeneration() is defined in assembler-arm64.h, but it calls into Constant::Clear() which is defined in assembler-arm64.cc. This introduces dependency to v8_base component when including assembler-arm64.h which is not always possible like for V8 unittests target. To fix this, we could define both in the same file, like Assembler::IsConstPoolEmpty() calls Constant::Clear() and both are defined in assembler-arm64.h, so it works fine. Bug: chromium:893460 Change-Id: I895cf0147950fca20142ea5ed18bcd020c1ab866 Reviewed-on: https://chromium-review.googlesource.com/c/1493293Reviewed-by:
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Maciej Goszczycki authored
This provides a single point where read-only space sharing will be controlled. Eventually ReadOnlyDeserializer will take ReadOnlyHeap instead of Isolate, first steps include https://chromium-review.googlesource.com/c/v8/v8/+/1483054 Bug: v8:7464 Change-Id: I213819aeca6fca335235025c9195edf474230eda Reviewed-on: https://chromium-review.googlesource.com/c/1489087 Commit-Queue: Maciej Goszczycki <goszczycki@google.com> Reviewed-by:
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Toon Verwaest authored
Change-Id: I4d774452e4537ba507bab87ac0a197d17a2f2862 Reviewed-on: https://chromium-review.googlesource.com/c/1494759Reviewed-by:
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