- 26 Feb, 2019 34 commits
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Benedikt Meurer authored
This adds support for dynamically checking the newly introduced is_safe_to_skip_adapt_arguments flag on the SharedFunctionInfo inside the ArgumentsAdaptorTrampoline builtin, so that if there's an arguments mismatch, but said bit is set, we can just massage the current stack frame according to the SharedFunctionInfo and don't need to create an arguments adaptor frame. This improves the general (baseline) performance of calls with arguments mismatches by up to 35%, as can be seen with the test case from the tracking bug, which goes from around callUnderApplication: 608 ms. callOverApplication1: 633 ms. callOverApplication2: 635 ms. to callUnderApplication: 390 ms. callOverApplication1: 439 ms. callOverApplication2: 443 ms. when the TurboFan fast-path (that was previously introduced) is forcibly disabled. That's a pretty solid baseline improvement and there's probably still some room for further improvement (i.e. avoid loading the SFI multiple times, etc.). Drive-by-fix: Refactor and cleanup the ArgumentsAdaptorTrampoline builtin a bit to make it more efficient and easier to read (it's still pretty messy, but I don't wanna change too many things at once). This is only the initial x64 port, since for ia32 we're really short on registers and it might not even pay off (initial prototype shows a lot less performance impact). The arm and arm64 port is in progress and will land once ready. Bug: v8:8834, v8:8895 Change-Id: I2e1c8e4767a808a43b932487fdedc0e44cdd35c5 Reviewed-on: https://chromium-review.googlesource.com/c/1488751 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#59881}
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Sergey Ulanov authored
OS::Allocate() previously was calling zx_vmo_replace_as_executable() when executable access is requested. This breaks the case when the OS::SetPermission() is called to mark that memory as executable later. Updated it to call zx_vmo_replace_as_executable() for all VMOs. This solution is not ideal, but it's consistent with other platforms, so it's acceptable short-term. Bug: v8:8899, chromium:934582 Change-Id: Ifeb818c93d8b9c80e73a057f5e6f3ca5a7b1c23f Reviewed-on: https://chromium-review.googlesource.com/c/1483613Reviewed-by:
Wez <wez@chromium.org> Commit-Queue: Sergey Ulanov <sergeyu@chromium.org> Cr-Commit-Position: refs/heads/master@{#59880}
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Sigurd Schneider authored
TBR=petermarshall@chromium.org Change-Id: I663735761c4ae730337b1381b52c99371eae2951 Notry: true Bug: v8:5193 Reviewed-on: https://chromium-review.googlesource.com/c/1489084Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#59879}
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Peter Marshall authored
This one fails on Windows. Bug: v8:5193 Change-Id: Ib028f8d7aa8a2d69a7324f9fcc6c5d03bc6f368c Notry: true Reviewed-on: https://chromium-review.googlesource.com/c/1489081 Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Reviewed-by:
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Sigurd Schneider authored
R=mslekova@chromium.org Bug: v8:8834 Change-Id: I51ff4441a80fd92bbdf400b5b92ff2d399250864 Reviewed-on: https://chromium-review.googlesource.com/c/1489077Reviewed-by:
Maya Lekova <mslekova@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#59877}
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Peter Marshall authored
This one still fails too, whoops. Bug: v8:5193 Change-Id: I07c0e55c8a1ca59311e0110c851b38bd9028c20f Notry: true Reviewed-on: https://chromium-review.googlesource.com/c/1489079 Commit-Queue: Peter Marshall <petermarshall@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Reviewed-by:
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Sigurd Schneider authored
Change-Id: I4bd02bdb68727b6242b0fe4b81fd522813b13f39 Bug: v8:8834 Reviewed-on: https://chromium-review.googlesource.com/c/1488755Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
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Peter Marshall authored
This one still fails, whoops. Bug: v8:5193 Notry: true Change-Id: Icd7ac2931e08efd176f0d37aea07c9bf30991d9b Reviewed-on: https://chromium-review.googlesource.com/c/1489078Reviewed-by:
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Peter Marshall authored
I can't reproduce any of these flakes anymore on windows or linux. Some are confirmed fixed with the same root cause as crbug.com/v8/8883. Others are not reproducible anymore and were probably fixed by other de-flaking and bugfixes in the last 6 months. Bug: v8:5193, v8:7054 Change-Id: I23ce47a98f11f3637ccf4baf01ffab5c461a0ebd Reviewed-on: https://chromium-review.googlesource.com/c/1489074Reviewed-by:
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Michael Achenbach authored
NOTRY=true Bug: v8:8889 Change-Id: I1faf4bcb8f573485915a8b79d551fbb4985a02a0 Reviewed-on: https://chromium-review.googlesource.com/c/1489075Reviewed-by:
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Benedikt Meurer authored
We somehow forgot to thread through the VectorSlotPair for the CALL_IC based speculation feedback to CheckedTaggedToTaggedPointer. This was showing for example with `String#concat()` where we ended up with an endless deoptimization loop if the parameter was a Smi. Bug: v8:8913 Change-Id: I84d90403f6fada9b435d4eb71c689edc3c34dc86 Reviewed-on: https://chromium-review.googlesource.com/c/1488770 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Mathias Bynens <mathias@chromium.org> Reviewed-by:
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tzik authored
V8 used to use the microtask context when it runs EnqueueJob step 2. > Let job settings be some appropriate environment settings object. https://html.spec.whatwg.org/multipage/webappapis.html#enqueuejob(queuename,-job,-arguments) However, it's being updated to use the handler's context. https://github.com/whatwg/html/issues/1426#issuecomment-340071080 Change-Id: I24840a28ef2c903539fe4ace74ae59da290f5109 Reviewed-on: https://chromium-review.googlesource.com/c/1465902Reviewed-by:
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Yang Guo authored
R=mlippautz@chromium.org Change-Id: Ic1d2fce007ddcb72f56ad257032e434c575a3f8d Reviewed-on: https://chromium-review.googlesource.com/c/1456104 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#59869}
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Allan Sandfeld Jensen authored
The logic for removing while iterating is non-standard and a left over from a previous index based loop. This patch replaces it with a standard erase based version. This fixes a runtime crash with MSVC that invalidates the iterator and then asserts. This also makes the code safe in case the last move can be redundant. Change-Id: Ie6990e0d65a3b83a4b7da3e2e89ed4e60a6cd215 Reviewed-on: https://chromium-review.googlesource.com/c/1488762Reviewed-by:
Ben Titzer <titzer@chromium.org> Commit-Queue: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#59868}
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Igor Sheludko authored
Bug: v8:8834 Change-Id: I4d57b15f2d5058511a2c474897a52cac236a6a00 Reviewed-on: https://chromium-review.googlesource.com/c/1488767Reviewed-by:
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Toon Verwaest authored
GetSymbol previously always internalized the underlying string, even if the preparser does not need it. The most common case where this isn't needed is property name parsing. This seems to speed up preparsing quite a bit. For future reference: Property names in object literals still are needed due to various checks (e.g., get 'constructor', duplicate __proto__, ...); as well as cover grammar parsing (property names can turn into variable references). If we turn all strings that the preparser needs to identify back into contextual keywords we may be able to avoid the former. Change-Id: I549e4600053de3136ca08d4915cc04db36d66a89 Reviewed-on: https://chromium-review.googlesource.com/c/1488764Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Commit-Queue: Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/master@{#59866}
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Simon Zünd authored
This CL introduces a new expression that can replace "std::string" fields in other expressions. The main goal is to get SourcePositions for identifiers to make them available in the language server. The CL introduces a separate symbol "name", that allows to incrementellay replace strings with name expression where needed. As an example, variable delcarations now use a NameExpression for the variable name. R=danno@chromium.org, tebbi@chromium.org Bug: v8:7793 Change-Id: I5b88bbaeac597b8e9760d2e01880e5e599ebf802 Reviewed-on: https://chromium-review.googlesource.com/c/1488752 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#59865}
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Igor Sheludko authored
... which always contains constant value. Bug: v8:8834 Change-Id: I27af24d07371b112d48eaab4d3a782a74af5fb20 Reviewed-on: https://chromium-review.googlesource.com/c/1487611Reviewed-by:
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Georg Neis authored
When --concurrent_inlining is on, precompute (during serialization) the list of receiver maps and the transition matrix of element accesses. Bug: v8:7790 Change-Id: I257eaea630f33831ab6600851ccdf297e17e35ca Reviewed-on: https://chromium-review.googlesource.com/c/1475769 Commit-Queue: Georg Neis <neis@chromium.org> Reviewed-by:
Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#59863}
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Jaroslav Sevcik authored
... as suggested by the bug's reporter. Bug: chromium:935358 Change-Id: Iab9d207e4f55a395d0496ef5d5ea0e9b6783ae66 Reviewed-on: https://chromium-review.googlesource.com/c/1488757Reviewed-by:
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Yang Guo authored
R=bmeurer@chromium.org Bug: chromium:934201 Change-Id: I73048fef3afea5d06be88a2768d77f7e349daef5 Reviewed-on: https://chromium-review.googlesource.com/c/1488760Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#59861}
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Toon Verwaest authored
By making EmptyIdentifierString (used for failure-mode parsing) point to the empty_string() we can drop nullptr checks in the preparser. This is similar to what the parser already does. Change-Id: I4640f7ae6b24afc8d5275818caed0cca185ca72c Reviewed-on: https://chromium-review.googlesource.com/c/1488759Reviewed-by:
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Michael Achenbach authored
We'll remove the gcc version from the builder name in a follow up. TBR=sergiyb@chromium.org NOTRY=true Bug: chromium:933093 Change-Id: I65359afd7245f155f7d1fd0519033ab8f8f736bb Reviewed-on: https://chromium-review.googlesource.com/c/1488758Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Reviewed-by:
Sergiy Belozorov <sergiyb@chromium.org> Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org> Cr-Commit-Position: refs/heads/master@{#59859}
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Toon Verwaest authored
That way we can avoid allocating unreusable zone memory. Change-Id: I0f30cbf5133026c63a9729bc45e728daa4740e9f Reviewed-on: https://chromium-review.googlesource.com/c/1488756Reviewed-by:
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Sigurd Schneider authored
This reverts commit 32fc0acf. Reason for revert: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/30270 layout test breakage: https://test-results.appspot.com/data/layout_results/V8-Blink_Linux_64/30270/webkit_layout_tests%20%28with%20patch%29/layout-test-results/results.html There is a dead node arriving in representation selection, which might indicate that the problem is not in this CL, but that this CL stirs up the node soup in such a way that dead code elimination gets confused. Original change's description: > Optimize `in` operator > > This change implements optimizations for the `in` operator for packed array > elements and object properties. It adds a new feedback slot kind and an IC > path similar to KeyedLoadIC for handling the lookups. TurboFan uses the > feedback to optimize based on the maps and keys. > > For more details see: > https://docs.google.com/document/d/1tIfzywY8AeNVcy_sen-5Xev21MeZwjcU8QhSdzHvXig > > This can provide 10x performance improvements of on loops of the form: > > for (let i = 0; i < ary.length; ++i) { > if (i in ary) { > ... > } > } > > > Bug: v8:8733 > Change-Id: I766bf865a547a059e5bce5399bb6112e5d9a85c8 > Reviewed-on: https://chromium-review.googlesource.com/c/1432598 > Reviewed-by: Ulan Degenbaev <ulan@chromium.org> > Reviewed-by: Igor Sheludko <ishell@chromium.org> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> > Reviewed-by: Toon Verwaest <verwaest@chromium.org> > Commit-Queue: Matt Gardner <magardn@microsoft.com> > Cr-Commit-Position: refs/heads/master@{#59843} TBR=ulan@chromium.org,rmcilroy@chromium.org,jkummerow@chromium.org,jarin@chromium.org,ishell@chromium.org,bmeurer@chromium.org,verwaest@chromium.org,magardn@microsoft.com Change-Id: Ib2db974e5bed4c4a2b6b450f796bdc4b0b8fd562 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:8733 Reviewed-on: https://chromium-review.googlesource.com/c/1488761Reviewed-by:
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Michael Starzinger authored
This flips the section codes for the exception section (part of the exception handling proposal) and the data-count section (part of the bulk memory proposal). Also see the following discussions for the underlying motivation: https://github.com/WebAssembly/bulk-memory-operations/pull/42 https://github.com/WebAssembly/exception-handling/issues/70 R=binji@chromium.org BUG=v8:8868 Change-Id: I9f5f524e7aec067720346a5bb8d45c7c80a4c7a2 Reviewed-on: https://chromium-review.googlesource.com/c/1478207Reviewed-by:
Ben Smith <binji@chromium.org> Reviewed-by:
Clemens Hammacher <clemensh@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#59856}
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Georg Neis authored
This directory is created by ccls (language server for C++ and others). R=sigurds@chromium.org Change-Id: I2413921ca896ad2003fcfd10fdadb739f1af18c8 Reviewed-on: https://chromium-review.googlesource.com/c/1487151Reviewed-by:
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Sigurd Schneider authored
Remove EmbeddedVector from utils.h Bug: v8:8834, v8:8912 Change-Id: I04e9f12121757bd0b87c68d7a4a5b213c2d8b686 Reviewed-on: https://chromium-review.googlesource.com/c/1486473Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
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Sergiy Belozorov authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9f11dc3..ebd384a TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org Change-Id: I1cb46f5fdd1604f0beb509e18a1bda31bbe8a2e1 Reviewed-on: https://chromium-review.googlesource.com/c/1485245Reviewed-by:
v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org> Cr-Commit-Position: refs/heads/master@{#59853}
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Michael Starzinger authored
R=ahaas@chromium.org TEST=mjsunit/regress/wasm/regress-935138 BUG=chromium:935138 Change-Id: I73465e0edcdfcd33b96764ffaf5f33519e424bb8 Reviewed-on: https://chromium-review.googlesource.com/c/1486471 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#59852}
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Michael Achenbach authored
NOTRY=true TBR=sergiyb@chromium.org Bug: chromium:933093 Change-Id: I48236ef06c990526b72be418773d0a098c85178f Reviewed-on: https://chromium-review.googlesource.com/c/1488754Reviewed-by:
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Georg Neis authored
Change-Id: I2d5b54c88bece3e22c4ae25d7fba094647f64f52 Reviewed-on: https://chromium-review.googlesource.com/c/1487051Reviewed-by:
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Matt Gardner authored
MSVC 14.x and 15.x handle -0 correctly unless /fp:fast is used. /fp:precise is the default. bug: v8:3477, v8:8912 Change-Id: I242a1dfd845f750cab7c56f13107612259d44d23 Reviewed-on: https://chromium-review.googlesource.com/c/1487414Reviewed-by:
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Simon Zünd authored
This CL contains a basic Json parser used to read and write the Json-RPC messages of the language server protocol. This CL is part of the initial language server implementation but submitted separately for easier review. R=tebbi@chromium.org Bug: v8:8880 Change-Id: Icea040975e1ed1d587954c3342d8d876e01c26b8 Reviewed-on: https://chromium-review.googlesource.com/c/1479956 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by:
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- 25 Feb, 2019 6 commits
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Caitlin Potter authored
Turns --harmony-hashbang on by default. Intent to ship: https://groups.google.com/d/msg/v8-dev/hlCVa_XZ3TM/UWjjyOq3FwAJ ChromeStatus page: https://www.chromestatus.com/feature/5134505706782720 BUG=v8:8523 R=gsathya@chromium.org, mathias@chromium.org, adamk@chromium.org Change-Id: I821f69e45eb0a63a3f49181e2b88b0bcd091af2c Reviewed-on: https://chromium-review.googlesource.com/c/1486113Reviewed-by:
Adam Klein <adamk@chromium.org> Reviewed-by:
Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Caitlin Potter <caitp@igalia.com> Cr-Commit-Position: refs/heads/master@{#59847}
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Z Duong Nguyen-Huu authored
currently it cannot call run-tests.py since it use Linux path Change-Id: I15af9c7e6503e6d473611a24f5f223ff68b1dbbd Reviewed-on: https://chromium-review.googlesource.com/c/1484110Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com> Cr-Commit-Position: refs/heads/master@{#59846}
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Frank Tang authored
This is a reland of f1b21a10 Original change's description: > [Intl] Ship Intl.Locale > > Bug: v8:7684 > Change-Id: I5994c3fc4b97c4322c4e0cf20305da75e66efd5a > Reviewed-on: https://chromium-review.googlesource.com/c/1478220 > Reviewed-by: Adam Klein <adamk@chromium.org> > Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> > Commit-Queue: Frank Tang <ftang@chromium.org> > Cr-Commit-Position: refs/heads/master@{#59780} Bug: v8:7684 Change-Id: I4f73205398a9649e2f55a1b090cd3afffade68c4 Reviewed-on: https://chromium-review.googlesource.com/c/1480918Reviewed-by:
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Z Duong Nguyen-Huu authored
Bug: v8:6831 Change-Id: I6e9f6fc718928f2f86d3b3c2dd144a6636b05790 Reviewed-on: https://chromium-review.googlesource.com/c/1481895 Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com> Reviewed-by:
Simon Zünd <szuend@chromium.org> Cr-Commit-Position: refs/heads/master@{#59844}
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Matt Gardner authored
This change implements optimizations for the `in` operator for packed array elements and object properties. It adds a new feedback slot kind and an IC path similar to KeyedLoadIC for handling the lookups. TurboFan uses the feedback to optimize based on the maps and keys. For more details see: https://docs.google.com/document/d/1tIfzywY8AeNVcy_sen-5Xev21MeZwjcU8QhSdzHvXig This can provide 10x performance improvements of on loops of the form: for (let i = 0; i < ary.length; ++i) { if (i in ary) { ... } } Bug: v8:8733 Change-Id: I766bf865a547a059e5bce5399bb6112e5d9a85c8 Reviewed-on: https://chromium-review.googlesource.com/c/1432598Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
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Ulan Degenbaev authored
This prevents accumulation of non-regular chunks if unmapper tasks are not making progress. Bug: chromium:934453 Change-Id: I552bc4f566f4be8877d9e806cca2aa9c284a7f4f Reviewed-on: https://chromium-review.googlesource.com/c/1483055Reviewed-by:
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