- 09 Mar, 2022 1 commit
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Camillo Bruni authored
Replace all CONVERT_XXX_ARG_XXX() macros from runtime-util.h with direct calls to Arguments or the fully expanded equivalent. - This replaces many of the hard CHECKs with DCHECK (as is common practice in most V8 code) - Instead of relying on verbose comments we now have readable code - Rename Arguments.::xxx_at with Arguments::xxx_value_at since these methods don't return the Object but rather their double/int value - Add Oddball::ToBool helper - Add and use v8::internal::PropertyAttributesFromInt helper - Add stronger DCHECK for PropertyAttributes returned in GetPropertyAttributesWithInterceptorInternal Bug: v8:11263 Change-Id: I8d531857e05d19f3198753b05af28d993a391854 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3497768Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/main@{#79418}
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- 10 Nov, 2021 1 commit
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Camillo Bruni authored
Directly memcpy char* literals if they fit in the current pending part. This avoids incremental checks for the current part size. This will improve JSON.stringify for objects with lots of true, false, null values by roughly 10%; Drive-by-fix: - Improve JSON.stringify for empty [] and {} - Add IncrementalStringBuilder::NoExtend DECHECKs Bug: v8:12195 Change-Id: I81ebc9e088cf983adbcfb2d768137e4a3cef9a7a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3260524Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/main@{#77817}
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- 11 Nov, 2019 1 commit
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Joyee Cheung authored
This patch excludes brand symbols from the result of JSReceiver::GetPrivateEntries so that the brands do not show up when the instances are inspected from the DevTools (e.g. via `Runtime.getProperties()`). To implement this, we use a bit in the Symbols to denote whether it's a brand symbol. A brand symbol is also a private name symbol so that we can just reuse the IC for accessing private names and do not need to jump through extra ORs. Design doc: https://docs.google.com/document/d/1N91LObhQexnB0eE7EvGe57HsvNMFX16CaWu-XCTnnmY/edit Bug: v8:8671, v8:9839, v8:8330 Change-Id: I24346aeedce3602395289052d1e1350ae9390354 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1909757Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Joyee Cheung <joyee@igalia.com> Cr-Commit-Position: refs/heads/master@{#64899}
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- 30 Oct, 2019 1 commit
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Gus Caplan authored
Change-Id: I2a1ad1835b751237b350e56d64e3475459bfb7a6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1873715 Commit-Queue: Tobias Tebbi <tebbi@chromium.org> Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#64636}
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- 23 May, 2019 2 commits
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Yang Guo authored
TBR=bmeurer@chromium.org,leszeks@chromium.org Bug: v8:9247 Change-Id: I8d14d0192ea8c705f8274e8e61a162531826edb6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624220Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#61769}
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Clemens Hammacher authored
This CL was generated by an automatic clang AST rewriter using this matcher expression: callExpr( callee( cxxMethodDecl( hasName("operator->"), ofClass(isSameOrDerivedFrom("v8::internal::Object")) ) ), argumentCountIs(1) ) The "->" at the expression location was then rewritten to ".". R=jkummerow@chromium.org TBR=mstarzinger@chromium.org,verwaest@chromium.org,yangguo@chromium.org Bug: v8:9183, v8:3770 No-Try: true No-Tree-Checks: true Change-Id: I0a7ecabdeafe51d0cf427f5280af0c7cab96869e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624209Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#61764}
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- 22 May, 2019 1 commit
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Yang Guo authored
Bug: v8:9247 Change-Id: I79e0553e8a0d6dac2aa16b94a6c0e05b6ccde4a1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1621934 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#61725}
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- 21 May, 2019 1 commit
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Yang Guo authored
Bug: v8:9247 Change-Id: I9bcf2694b449f79cdbe03f5fde59cb21b8cad418 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619758 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#61676}
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- 20 May, 2019 1 commit
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Yang Guo authored
TBR=verwaest@chromium.org,rmcilroy@chromium.org NOTREECHECKS=true NOPRESUBMIT=true Bug: v8:9247 Change-Id: I9ddfb6e56ca8e47c4ac186a8df5f442d26420a69 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617661 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#61642}
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- 17 May, 2019 2 commits
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Yang Guo authored
This reverts commit 5f285395. Reason for revert: presubmit failure Original change's description: > Move logging and diagnostics related source files > > This also introduces a COMMON_OWNERS file, which is derived from the > current top-level OWNERS file. It is to be used for parts of the > codebase that is not sensitive to domain-specific expertise. > > NOPRESUBMIT=true > TBR=verwaest@chromium.org > > Bug: v8:9247 > Change-Id: I34a5eaa7cb1509a80d15094a2aceedd62665b17c > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613987 > Reviewed-by: Yang Guo <yangguo@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Commit-Queue: Yang Guo <yangguo@chromium.org> > Cr-Commit-Position: refs/heads/master@{#61600} TBR=rmcilroy@chromium.org,yangguo@chromium.org,mstarzinger@chromium.org,verwaest@chromium.org Change-Id: I3827c3af4fd63b18aa48c49617f318a01746e813 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:9247 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617247Reviewed-by:
Yang Guo <yangguo@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#61601}
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Yang Guo authored
This also introduces a COMMON_OWNERS file, which is derived from the current top-level OWNERS file. It is to be used for parts of the codebase that is not sensitive to domain-specific expertise. NOPRESUBMIT=true TBR=verwaest@chromium.org Bug: v8:9247 Change-Id: I34a5eaa7cb1509a80d15094a2aceedd62665b17c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613987Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#61600}
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- 15 Feb, 2019 1 commit
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Jakob Kummerow authored
This takes heap-inl.h out of the "Giant Include Cluster". Naturally, that means adding a bunch of explicit includes in a bunch of places that relied on transitively including them before. As of this patch, no header file outside src/heap/ includes heap-inl.h. Bug: v8:8562,v8:8499 Change-Id: I65fa763f90e66afc30d105b9277792721f05a6d4 Reviewed-on: https://chromium-review.googlesource.com/c/1459659 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#59617}
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- 07 Jan, 2019 1 commit
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Joyee Cheung authored
This patch sets the name slot of the private name symbols for private fields and display the names in error messages of invalid private field accesses. TBR: adamk@chromium.org Bug: v8:8144 Change-Id: Id34c468e2bddd1c3001517b4d447c7497402df76 Reviewed-on: https://chromium-review.googlesource.com/c/1374332Reviewed-by:
Camillo Bruni <cbruni@chromium.org> Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Mathias Bynens <mathias@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Joyee Cheung <joyee@igalia.com> Cr-Commit-Position: refs/heads/master@{#58601}
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- 13 Nov, 2018 1 commit
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Marja Hölttä authored
This reduces the build steps after touching counters.h from 710 to 191, thus detaching counters.h from the giant include cluster. BUG=v8:7490,v8:8238 Change-Id: I0c7e707fb945e293f8a5604cc8da438cd35b3210 Reviewed-on: https://chromium-review.googlesource.com/c/1329695 Commit-Queue: Marja Hölttä <marja@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#57468}
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- 06 Nov, 2018 1 commit
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Joyee Cheung authored
Rename variables and flag names so that the classes can be reused by private methods implementation. In particular: Rename "fields" to "members" in the initializer so that we can initialize both fields and private methods/accessors there, for example: instance_fields_initializer -> instance_members_initializer InitializeClassFieldsStatement -> InitializeClassMembersStatement Rename "private field" to "private name" for the private symbols used to implement private fields so that we can use them to store private methods/accessors later as well, for example: private_field_name_var -> private_name_var NewPrivateFieldSymbol -> NewPrivateNameSymbol The follow-on is in https://chromium-review.googlesource.com/c/v8/v8/+/1301018 The design doc is in https://docs.google.com/document/d/1T-Ql6HOIH2U_8YjWkwK2rTfywwb7b3Qe8d3jkz72KwA/edit?usp=sharing Bug: v8:8330 Change-Id: I1cdca8def711da879b6e4d67c5ff0a5a4a36abbe Reviewed-on: https://chromium-review.googlesource.com/c/1312597Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:
Adam Klein <adamk@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Joyee Cheung <joyee@igalia.com> Cr-Commit-Position: refs/heads/master@{#57289}
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- 03 Aug, 2018 1 commit
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Clemens Hammacher authored
arguments.h used methods only defined in objects-inl.h and handles-inl.h. These uses are now moved to arguments-inl.h. Since builtins-utils.h used these methods, it also needs to be split to have an inl header now. R=titzer@chromium.org Bug: v8:7754, v8:7965 Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng Change-Id: I21db7a86f7c15776eccf060f81f2bde000b92a40 Reviewed-on: https://chromium-review.googlesource.com/1160647Reviewed-by:
Ben Titzer <titzer@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#54889}
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- 31 Jul, 2018 1 commit
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Ben L. Titzer authored
As discussed offline, this header is not really useful without its inline definitions. So instead of trying to split it (unnaturally), declare defeat and make it an inline header file. Also remove two unnecessary uses of it, move the JSON stringifier class into its .cc file (because it needs IncrementalStringBuilder inline) and forward declare in prettyprinter.h. R=petermarshall@chromium.org, mstarzinger@chromium.org BUG=v8:7965 Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng Change-Id: I7ba032ca718a195e156ec3e59f8e858a25423450 Reviewed-on: https://chromium-review.googlesource.com/1156401Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Peter Marshall <petermarshall@chromium.org> Commit-Queue: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#54818}
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- 03 Jun, 2018 1 commit
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Alexey Kozyatinskiy authored
Removed most of mirrors.js and debug.js. Further steps: - migrate liveedit.js to native, - remove debugger context. R=yangguo@chromium.org TBR=leszeks@chromium.org Bug: v8:5530 Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;master.tryserver.blink:linux_trusty_blink_rel Change-Id: I291ef20ef3c63a424d32e3e0c9d0962a6ca382d1 Reviewed-on: https://chromium-review.googlesource.com/1081176 Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Dmitry Gozman <dgozman@chromium.org> Cr-Commit-Position: refs/heads/master@{#53480}
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- 23 Feb, 2018 1 commit
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jgruber authored
The list of runtime function use counts was generated with: $ grep -o '^ *F(\w*' src/runtime/runtime.h | sed 's/^ *F(//' | sort | while read f; do USE_COUNT=$(git grep "\(Runtime::k\|Runtime::kInline\|%\|%_\)$f" | wc -l); echo $USE_COUNT $f; done This reduces libv8.so size by 59K on an x64 release build. Bug: v8:7310 Change-Id: Ib4d097e63ed065f41bf73e9529e4354575be5229 Reviewed-on: https://chromium-review.googlesource.com/934272Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#51526}
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- 22 Feb, 2018 1 commit
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Sathya Gunasekaran authored
Private fields should not return undefined on access miss, but instead should throw a TypeError. This patch uses a bit on v8::Symbol to mark if this symbol is a private field or not. This patch also changes the LookupIterator code path that deals with LookupIterator::State::DATA to deal with JSReceiver instead of JSObject. Note: the error message doesn't output the field name, but that's a WIP. Bug: v8:5368 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: I8ae960b478eb6ae1ebf9bc90658ce3654d687977 Reviewed-on: https://chromium-review.googlesource.com/905627 Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#51452}
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- 29 Jan, 2018 1 commit
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Sathya Gunasekaran authored
Things that don't work yet: (a) pre parsed scope data is broken (b) private fields can be accessed outside classes (c) no early or runtime error for accessing unknown fields Things that do work: everything else Change-Id: I3d58be44e2be73ec50defb42403112a8a5e68c54 Bug: v8:5368 Reviewed-on: https://chromium-review.googlesource.com/865497 Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#50935}
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- 23 May, 2017 2 commits
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machenbach authored
Revert of [es2015] Precompute the descriptive string for symbols. (patchset #3 id:40001 of https://codereview.chromium.org/2900703002/ ) Reason for revert: Speculative revert for: https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds/8901 Original issue's description: > [es2015] Precompute the descriptive string for symbols. > > Previously the String constructor and the Symbol.prototype.toString > methods had to compute the descriptive string for a Symbol on the fly, > which can produce a lot of garbage when this happens a lot, i.e. when > the String representation of a Symbol is used often. Now instead of > doing this on-demand we can just do it upfront when creating the Symbol. > > That way we also ensure that we won't throw an exception when accessing > the descriptive string of a Symbol, due to potential String length > overflow, but have the exception during Symbol creation upfront, which > is a lot less surprising behavior. > > BUG=v8:6278,v8:6344,v8:6350 > TBR=mlippautz@chromium.org > R=ishell@chromium.org > > Review-Url: https://codereview.chromium.org/2900703002 > Cr-Commit-Position: refs/heads/master@{#45479} > Committed: https://chromium.googlesource.com/v8/v8/+/e87573822e1c0c041c03f2b60599b0ab9256422f TBR=ishell@chromium.org,mlippautz@chromium.org,bmeurer@chromium.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:6278,v8:6344,v8:6350 Review-Url: https://codereview.chromium.org/2903533002 Cr-Commit-Position: refs/heads/master@{#45483}
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bmeurer authored
Previously the String constructor and the Symbol.prototype.toString methods had to compute the descriptive string for a Symbol on the fly, which can produce a lot of garbage when this happens a lot, i.e. when the String representation of a Symbol is used often. Now instead of doing this on-demand we can just do it upfront when creating the Symbol. That way we also ensure that we won't throw an exception when accessing the descriptive string of a Symbol, due to potential String length overflow, but have the exception during Symbol creation upfront, which is a lot less surprising behavior. BUG=v8:6278,v8:6344,v8:6350 TBR=mlippautz@chromium.org R=ishell@chromium.org Review-Url: https://codereview.chromium.org/2900703002 Cr-Commit-Position: refs/heads/master@{#45479}
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- 05 Jan, 2017 1 commit
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franzih authored
BUG= Review-Url: https://codereview.chromium.org/2613723002 Cr-Commit-Position: refs/heads/master@{#42083}
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- 06 Dec, 2016 1 commit
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yangguo authored
This is done by reimplementing Symbol.for directly on top of NameDictionary. A nice side effect is the removal of src/js/symbol.js R=jochen@chromium.org, peria@chromium.org BUG=chromium:617892 Review-Url: https://codereview.chromium.org/2551763003 Cr-Commit-Position: refs/heads/master@{#41520}
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- 08 Jun, 2016 1 commit
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mstarzinger authored
This removes explicit uses of the RUNTIME_ASSERT macro from some runtime methods. The implicit ones in CONVERT_FOO_ARG_CHECKED will be addressed in a separate CL for all runtime modules at once. R=verwaest@chromium.org BUG=v8:5066 Review-Url: https://codereview.chromium.org/2041353003 Cr-Commit-Position: refs/heads/master@{#36815}
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- 06 Jun, 2016 1 commit
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cbruni authored
Passing in the isolate and pointer compare the instnance against the corresponding constant is always faster than decoding the instance types. BUG= Review-Url: https://codereview.chromium.org/2028983002 Cr-Commit-Position: refs/heads/master@{#36744}
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- 24 May, 2016 1 commit
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yangguo authored
R=franzih@chromium.org Review-Url: https://codereview.chromium.org/2006673002 Cr-Commit-Position: refs/heads/master@{#36470}
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- 29 Oct, 2015 1 commit
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jochen authored
Also deprecate hidden values BUG=none LOG=y R=rossberg@chromium.org,yangguo@chromium.org Review URL: https://codereview.chromium.org/1428793002 Cr-Commit-Position: refs/heads/master@{#31658}
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- 16 Sep, 2015 1 commit
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bmeurer authored
Implement the String constructor completely as native builtin, avoiding the need to do gymnastics in JavaScript builtin to properly detect the no argument case (which is different from the undefined argument case) and also allowing to just tailcall through to ToString or SymbolDescriptiveString for the common case. Also the JavaScript builtin was misleading since the case for construct call was unused, but could be triggered in a wrong way once we support tail calls from constructor functions. This refactoring allows us to properly implement subclassing for String builtins, once we have the correct initial_map on derived classes (it's merely a matter of using NewTarget instead of the target register now). This introduces a new %SymbolDescriptiveString runtime entry, which is also used by Symbol.toString() now. R=mstarzinger@chromium.org Review URL: https://codereview.chromium.org/1344893002 Cr-Commit-Position: refs/heads/master@{#30759}
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- 21 Aug, 2015 1 commit
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yangguo authored
We currently have several ways to share symbols that are used in both native scripts and the runtime. This change unifies this. We do not use the symbols registry since we don't need the registry any longer after bootstrapping, but the registry stays alive afterwards. R=mlippautz@chromium.org, rossberg@chromium.org Review URL: https://codereview.chromium.org/1293493004 Cr-Commit-Position: refs/heads/master@{#30280}
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- 18 Aug, 2015 1 commit
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mstarzinger authored
R=titzer@chromium.org Review URL: https://codereview.chromium.org/1293053004 Cr-Commit-Position: refs/heads/master@{#30232}
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- 31 Jul, 2015 1 commit
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bmeurer authored
This is the initial (big) step towards a more uniform implementation of the ToObject abstract operation (ES6 7.1.13), where we have a fallback implementation in JSReceiver::ToObject() and a fast (hydrogen) CodeStub to deal with the fast case (we should be able to do more cleanup on this in a followup CL). For natives we expose the abstract operation via a %_ToObject intrinsic, also exposed via a macro TO_OBJECT, that unifies the previous confusion with TO_OBJECT_INLINE, ToObject, TO_OBJECT, $toObject and %$toObject. Now the whole implementation of the abstract operation is context independent, meaning we don't need any magic in the builtins object nor the native context. R=mvstanton@chromium.org,yangguo@chromium.org Review URL: https://codereview.chromium.org/1266013006 Cr-Commit-Position: refs/heads/master@{#29953}
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- 16 Jun, 2015 1 commit
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wingo authored
R=rossberg@chromium.org LOG=N BUG= Review URL: https://codereview.chromium.org/1182303004 Cr-Commit-Position: refs/heads/master@{#29041}
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- 26 May, 2015 1 commit
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erikcorry authored
* Hash code is now just done with a private own symbol instead of the hidden string, which predates symbols. * In the long run we should do all hidden properties this way and get rid of the hidden magic 0-length string with the zero hash code. The advantages include less complexity and being able to do things from JS in a natural way. * Initially, the performance of weak set regressed, because it's a little harder to do the lookup in C++. Instead of heroics in C++ to make things faster I moved some functionality into JS and got the performance back. JS is supposed to be good at looking up named properties on objects. * This also changes hash codes of Smis so that they are always Smis. Performance figures are in the comments to the code review. Summary: Most of js-perf-test/Collections is neutral. Set and Map with object keys are 40-50% better. WeakMap is -5% and WeakSet is +9%. After the measurements, I fixed global proxies, which cost 1% on most tests and 5% on the weak ones :-(. In the code review comments is a patch with an example of the heroics we could do in C++ to make lookup faster (I hope we don't have to do this. Instead of checking for the property, then doing a new lookup to insert it, we could do one lookup and handle the addition immediately). With the current benchmarks above this buys us nothing, but if we go back to doing more lookups in C++ instead of in stubs and JS then it's a win. In a similar vein we could give the magic zero hash code to the hash code symbol. Then when we look up the hash code we would sometimes see the table with all the hidden properties. This dual use of the field for either the hash code or the table with all hidden properties and the hash code is rather ugly, and this CL gets rid of it. I'd be loath to bring it back. On the benchmarks quoted above it's slightly slower than moving the hash code lookup to JS like in this CL. One worry is that the benchmark results above are more monomorphic than real world code, so may be overstating the performance benefits of moving to JS. I think this is part of a general issue we have with handling polymorphic code in JS and any solutions there will benefit this solution, which boils down to regular property access. Any improvement there will lift all boats. R=adamk@chromium.org, verwaest@chromium.org BUG= Review URL: https://codereview.chromium.org/1149863005 Cr-Commit-Position: refs/heads/master@{#28622}
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- 20 May, 2015 1 commit
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erikcorry authored
R=verwaest@chromium.org BUG= Review URL: https://codereview.chromium.org/1143133002 Cr-Commit-Position: refs/heads/master@{#28502}
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- 20 Oct, 2014 1 commit
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yangguo@chromium.org authored
R=bmeurer@chromium.org Review URL: https://codereview.chromium.org/662413002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24736 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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- 30 Sep, 2014 1 commit
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yangguo@chromium.org authored
R=bmeurer@chromium.org Review URL: https://codereview.chromium.org/612383002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24323 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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