- 04 Oct, 2017 11 commits
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Michael Achenbach authored
This ports: https://chromium-review.googlesource.com/c/chromium/src/+/696886 Bug: chromium:692940, chromium:524758 Change-Id: I158d996ff76c354b8a672b085d476e9687205034 Reviewed-on: https://chromium-review.googlesource.com/700455Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#48282}
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Michael Lippautz authored
Reuse existing concurrent marking infrastructure for marking in the atomic pause. Details: - Do not stop concurrent marking when entering the atomic pause. - Start concurrent marking when it was off. This is required for non-incremental MC GCs. - Use atomic marking state in MC. - Transition through grey and avoid white->black. CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_linux64_tsan_rel;master.tryserver.v8:v8_linux64_tsan_concurrent_marking_rel_ng;master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel Bug: chromium:750084 Change-Id: I9f84661e69beac6254494907bdfe94e865b1e3ab Reviewed-on: https://chromium-review.googlesource.com/690002 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#48281}
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Ivica Bogosavljevic authored
Add instruction cache flish for wrapper table in module compiler instance builder. This fixes several failures in mjsunit/wasm and mjsunit/asm test suites on some MIPS boards. Bug: Change-Id: Ia8b640ad73a078d29f458d55663606dbbe8e387c Reviewed-on: https://chromium-review.googlesource.com/697807Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com> Cr-Commit-Position: refs/heads/master@{#48280}
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Clemens Hammacher authored
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/695525Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#48279}
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Ilija Pavlovic authored
Port for: https://chromium-review.googlesource.com/c/v8/v8/+/608975 In code generator for MIPS32, certain instructions are substituted with corresponding macro-instructions. TEST= BUG= Change-Id: I2ac47a785f0ea14c448f727da124dc78ea6c81af Reviewed-on: https://chromium-review.googlesource.com/699998Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com> Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@imgtec.com> Cr-Commit-Position: refs/heads/master@{#48278}
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Daniel Clifford authored
Change-Id: Id34d21437b3881d829526b89058f26741bee7acc Reviewed-on: https://chromium-review.googlesource.com/695327Reviewed-by: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Daniel Clifford <danno@chromium.org> Cr-Commit-Position: refs/heads/master@{#48277}
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Marja Hölttä authored
After closer investigation, the crashes / regressions we currently have are not so bad that we couldn't have the flag on. BUG=v8:5516 Change-Id: I1b70cf99de1707d659b2e0abcd3678ec71a530bf Reviewed-on: https://chromium-review.googlesource.com/699997Reviewed-by: Michael Hablich <hablich@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#48276}
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Benedikt Meurer authored
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/700254Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48275}
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v8-autoroll authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/05cc4b1..7311b74 Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/3f41f93..672cabd TBR=machenbach@chromium.org,hablich@chromium.org Change-Id: I5663213d2835b02d0ed9c953749cb722b8422a58 Reviewed-on: https://chromium-review.googlesource.com/700015Reviewed-by: v8 autoroll <v8-autoroll@chromium.org> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org> Cr-Commit-Position: refs/heads/master@{#48274}
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Deepti Gandluri authored
When atomic operations are used in loops, return the correct opcode length for loop assignment. Bug=v8:6842,v8:6532 Change-Id: I306db704d8a0baa5d98c05702360e6dfae11cbfa Reviewed-on: https://chromium-review.googlesource.com/699561Reviewed-by: Brad Nelson <bradnelson@chromium.org> Commit-Queue: Brad Nelson <bradnelson@chromium.org> Commit-Queue: Deepti Gandluri <gdeepti@chromium.org> Cr-Commit-Position: refs/heads/master@{#48273}
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Jakob Kummerow authored
For an improved debugging experience. Bug: v8:6791 Change-Id: Id4f7fea47036e4520e7b24edf34f210b664672bc Reviewed-on: https://chromium-review.googlesource.com/699427Reviewed-by: Adam Klein <adamk@chromium.org> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/master@{#48272}
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- 03 Oct, 2017 7 commits
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Anisha Rohra authored
Original Commit Message: In the test-run-wasm and test-run-wasm-64 cctests it is not possible to call runtime functions. To test traps in these cctests we therefore replace the runtime call with a call to a c-callback, followed by a return. This CL fixes the problem that the return did not clean up stack parameters. R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: Ia6b95141341635b769acf12b82b4524a56b12b94 Reviewed-on: https://chromium-review.googlesource.com/698424Reviewed-by: Junliang Yan <jyan@ca.ibm.com> Commit-Queue: Junliang Yan <jyan@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#48271}
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Yang Guo authored
I'd like to make sure changes to microtask handling do not break debugging. R=jarin@chromium.org Change-Id: I983bd3340261e472b22b0d5b6cded60b64b19d38 Reviewed-on: https://chromium-review.googlesource.com/691715Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#48270}
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Jaroslav Sevcik authored
Change-Id: I0de0ea0798c39831765bb3c00a00d0df7471bc3b Reviewed-on: https://chromium-review.googlesource.com/695407Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#48269}
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Benedikt Meurer authored
THe change in https://chromium-review.googlesource.com/695108 flushed out an issue with the IC::UpdatePolymorphicIC logic, where we'd try to stay MONOMORPHIC or POLYMORPHIC as long as the internalized name doesn't change. But the calling code already does the internalization for keyed accesses with Strings, so we need to double check that the same combination of (map, handler) is not already in the list, and properly go to MEGAMORPHIC state if there's such a pair already. This seriously tanked the six-speed-object-literals-ext-es5.js benchmark on AWFY. Bug: v8:6367, v8:6278, v8:6344 Change-Id: I90ea88d1fe61c165990c0a10d4a8687ffe351986 Reviewed-on: https://chromium-review.googlesource.com/695307Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48268}
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Mostyn Bramley-Moore authored
Avoid F5 symbol clash. Bug: chromium:770684 Change-Id: I9e851c1fe5abbdc4d032b7efdd0462c96d0c8ef3 Reviewed-on: https://chromium-review.googlesource.com/696063Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com> Cr-Commit-Position: refs/heads/master@{#48267}
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v8-autoroll authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/ce6d3d8..05cc4b1 Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/8ec7b14..3f41f93 TBR=machenbach@chromium.org,hablich@chromium.org Change-Id: Ibf166d33a133519e0c4ce36b20a42aa391f48c8b Reviewed-on: https://chromium-review.googlesource.com/696523Reviewed-by: v8 autoroll <v8-autoroll@chromium.org> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org> Cr-Commit-Position: refs/heads/master@{#48266}
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Alexey Kozyatinskiy authored
In V8Debugger code we don't expect task_id == null, e.g. asyncTaskStartedForStepping will trigger debug break on null as task_id. Let's filter task_id == null out. This issue is originally filed in Node.js: https://github.com/nodejs/node/issues/15464 R=dgozman@chromium.org Bug: none Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel Change-Id: Icc9f96105b3c91ee1b102d545a7817f7ee93394c Reviewed-on: https://chromium-review.googlesource.com/695808Reviewed-by: Dmitry Gozman <dgozman@chromium.org> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Cr-Commit-Position: refs/heads/master@{#48265}
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- 02 Oct, 2017 14 commits
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Michael Starzinger authored
This makes sure that helper methods on the {TranslatedState} class stick to the counting scheme used by {OptimizedFrame::Summarize} within the stack-walker. Both now treat {kJavaScriptBuiltinContinuation} as real JavaScript frames. R=jarin@chromium.org TEST=mjsunit/regress/regress-crbug-770543 BUG=chromium:770543 Change-Id: Icda65a7efb487470d39ebf648767a488ebf2e5f1 Reviewed-on: https://chromium-review.googlesource.com/695123 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#48264}
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Michael Starzinger authored
R=jarin@chromium.org Change-Id: I6f2e70d231d2c28c77bee121e98317f3f506fce4 Reviewed-on: https://chromium-review.googlesource.com/691975 Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#48263}
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Michael Starzinger authored
This makes sure the deoptimizer properly materializes heap objects, even when the top-most frame happens to be a stub-frame. Without this step the {arguments_marker} would leak into user-land and most likely be treated as an undefined value. R=jarin@chromium.org TEST=mjsunit/regress/regress-crbug-769852 BUG=chromium:769852 Change-Id: I4ba17501c5d7e68d1f402b7c2cc5ccb0fb7bfb05 Reviewed-on: https://chromium-review.googlesource.com/691996Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#48262}
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Benedikt Meurer authored
Until now keyed accesses to properties with string or symbol keys were only optimized properly while the IC was monomorphic and would go megamorphic as soon as there's another receiver map, even if the name was still the same (i.e. the same symbol or internalized string). This was a weird performance-cliff, that'll hurt modern code especially because for symbols you can only access them via keyed loads and stores. This CL fixes the state machine inside the ICs to properly transition to POLYMORPHIC state (and stay there) as long as the new name matches the previously recorded name. The FeedbackVector and TurboFan were already able to deal with this and didn't need any updates. On the micro-benchmark from the tracking bug we go from testStringMonomorphic: 429 ms. testSymbolMonomorphic: 431 ms. testStringPolymorphic: 429 ms. testSymbolPolymorphic: 5621 ms. to testStringMonomorphic: 429 ms. testSymbolMonomorphic: 429 ms. testStringPolymorphic: 429 ms. testSymbolPolymorphic: 430 ms. effectively eliminating the overhead for symbols completely, and yielding a 13.5x performance boost. This also seems to yield a 1% improvement on the ARES6 ML benchmark, because it eliminates the KEYED_LOAD_ICs for the Symbol.species lookups. Bug: v8:6367, v8:6278, v8:6344 Change-Id: I879fe56387b4c56203c1ad8ef8cafb6cc4c32897 Reviewed-on: https://chromium-review.googlesource.com/695108Reviewed-by: Michael Stanton <mvstanton@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48261}
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Mathias Bynens authored
The context is the following proposal to make JSON a subset of JavaScript: https://github.com/tc39/proposal-json-superset There’s interest in performing a side investigation to answer the question of what would happen if we stopped treating U+2028 and U+2029 as `LineTerminator`s *entirely*. (Note that this is separate from the proposal, which just changes how these characters are handled in ECMAScript strings.) This is technically a breaking change, and IMHO it would be wonderful if we could get away with it, but no one really has any data on whether or not we could. Adding this use counter lets us get that data. BUG=v8:6827 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: Ia22e8db1634df4d3f965bec8e1cfa11cc7b5e9aa Reviewed-on: https://chromium-review.googlesource.com/693155 Commit-Queue: Mathias Bynens <mathias@chromium.org> Reviewed-by: Marja Hölttä <marja@chromium.org> Cr-Commit-Position: refs/heads/master@{#48260}
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Michael Lippautz authored
Bug: Change-Id: I2b1ae2f475e780606fa07db2cf861eb2537207d6 Reviewed-on: https://chromium-review.googlesource.com/695223Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#48259}
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Camillo Bruni authored
Change-Id: I3b7e5f4fb9bc6cdad3582e19099fb97b2a0c7cb0 No-Try: true Reviewed-on: https://chromium-review.googlesource.com/684185Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/master@{#48258}
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Benedikt Meurer authored
The KEYED_STORE_IC was never able to deal with stores to typed arrays where the value being stored is not already a Number (i.e. either a Smi or a HeapNumber). By extending it to also handle Oddballs (i.e. true, false, undefined and null) and teaching TurboFan to also perform the appropriate check plus the truncation to Number, we can easily support this use case as well. On the micro-benchmark in the bug report, we go from typedArrayStoreBool: 2975 ms. typedArrayStoreInt: 44 ms. to typedArrayStoreBool: 43 ms. typedArrayStoreInt: 44 ms. so that's roughly a 70x performance boost. Bug: chromium:287773 Change-Id: I227419aeabc3f5b6793aa280a95448d03ac2f2dd Reviewed-on: https://chromium-review.googlesource.com/691731 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Michael Stanton <mvstanton@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#48257}
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Ben L. Titzer authored
R=gdeepti@chromium.org Bug: Change-Id: Ic2e519d24354b3327a92daa0d4d6e06c9ca4605e Reviewed-on: https://chromium-review.googlesource.com/687056 Commit-Queue: Ben Titzer <titzer@chromium.org> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> Reviewed-by: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#48256}
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Clemens Hammacher authored
With --wasm-trace-memory, both compiled code and the interpreter will output each memory load or store. This helps to debug miscompilations in emscripten or in V8, like the referenced bug. R=titzer@chromium.org Bug: chromium:718858 Change-Id: I90704d164975b11c65677f86947ab102242d5153 Reviewed-on: https://chromium-review.googlesource.com/684316Reviewed-by: Ben Titzer <titzer@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#48255}
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Benedikt Meurer authored
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/695021Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48254}
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Daniel Clifford authored
Change-Id: Iac4a95a0c094472d887d89bbf5d6189988c56f7c Reviewed-on: https://chromium-review.googlesource.com/692016 Commit-Queue: Daniel Clifford <danno@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48253}
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Deepti Gandluri authored
Bug: V8:6532 Change-Id: I6713e1c01ec669b7fa9a09bb75fbecff12f6cc22 Reviewed-on: https://chromium-review.googlesource.com/685949 Commit-Queue: Deepti Gandluri <gdeepti@chromium.org> Reviewed-by: Ben Smith <binji@chromium.org> Reviewed-by: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#48252}
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v8-autoroll authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b376554..ce6d3d8 TBR=machenbach@chromium.org,hablich@chromium.org Change-Id: Idda412143f1ff00ca10e8822acb5a0754372ee29 Reviewed-on: https://chromium-review.googlesource.com/694681Reviewed-by: v8 autoroll <v8-autoroll@chromium.org> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org> Cr-Commit-Position: refs/heads/master@{#48251}
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- 01 Oct, 2017 2 commits
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Bill Budge authored
- Moves leak sanitizer code to callers of OS:: Memory functions. - Changes signature of OS::ReleasePartialRegion to be more generic, removing the parameters that only make sense as part of VirtualMemory. Bug: chromium:756050 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Change-Id: I2f1401c9b0856b2eaf36b80b5f141e935ef63e1c Reviewed-on: https://chromium-review.googlesource.com/685741Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#48250}
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v8-autoroll authored
Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b6bab93..8ec7b14 TBR=machenbach@chromium.org,hablich@chromium.org Change-Id: Ifd4855bf671093c4494776ff16d4a58a0ef4eade Reviewed-on: https://chromium-review.googlesource.com/693092Reviewed-by: v8 autoroll <v8-autoroll@chromium.org> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org> Cr-Commit-Position: refs/heads/master@{#48249}
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- 30 Sep, 2017 5 commits
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Mostyn Bramley-Moore authored
Remove more "using" statements. Bug: chromium:746958 Change-Id: I2f9c45b1ff1d51fc58b7a702fee046ba3c6a7c17 Reviewed-on: https://chromium-review.googlesource.com/693862Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com> Cr-Commit-Position: refs/heads/master@{#48248}
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Benedikt Meurer authored
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/691660Reviewed-by: Yang Guo <yangguo@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#48247}
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Tobias Tebbi authored
This reverts commit 3c4bc27f. Reason for revert: https://bugs.chromium.org/p/chromium/issues/detail?id=770257 Original change's description: > Reland "[turbofan] eagerly prune None types and deadness from the graph" > > This is a reland of e1cdda25 > Original change's description: > > [turbofan] eagerly prune None types and deadness from the graph > > > > In addition to using the {Dead} node to prune dead control nodes and nodes that > > depend on them, we introduce a {DeadValue} node representing an impossible value > > that can occur at any position in the graph. The extended {DeadCodeElimination} > > prunes {DeadValue} and its uses, inserting a crashing {Unreachable} node into > > the effect chain when possible. The remaining uses of {DeadValue} are handled > > in {EffectControlLinearizer}, where we always have access to the effect chain. > > In addition to explicitly introduced {DeadValue} nodes, we consider any value use > > of a node with type {None} as dead. > > > > Bug: chromium:741225 > > Change-Id: Icc4b636d1d018c452ba1a2fa7cd3e00e522f1655 > > Reviewed-on: https://chromium-review.googlesource.com/641250 > > Commit-Queue: Tobias Tebbi <tebbi@chromium.org> > > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#48208} > > Bug: chromium:741225 > Change-Id: I21316913dae02864f7a6d7c9269405a79f054138 > Reviewed-on: https://chromium-review.googlesource.com/692034 > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> > Commit-Queue: Tobias Tebbi <tebbi@chromium.org> > Cr-Commit-Position: refs/heads/master@{#48232} TBR=jarin@chromium.org,tebbi@chromium.org Change-Id: Ied8da411a9c8cbe4ed2e1d3e98a76162c2834c97 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:741225 chromium:770257 Reviewed-on: https://chromium-review.googlesource.com/693235Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#48246}
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v8-autoroll authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/57716b3..b376554 Rolling v8/third_party/android_tools: https://chromium.googlesource.com/android_tools/+log/aadb2fe..ca9dc72 Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/9a255f5..b6bab93 TBR=machenbach@chromium.org,hablich@chromium.org Change-Id: I2fca7ada80048172b8dd07124a06a5064df165e9 Reviewed-on: https://chromium-review.googlesource.com/693082Reviewed-by: v8 autoroll <v8-autoroll@chromium.org> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org> Cr-Commit-Position: refs/heads/master@{#48245}
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Eric Holk authored
In JS to Wasm wrappers, arguments have to be converted from JavaScript's representation to Wasm's representation. Because of property accessors, this can result in JavaScript or even asm.js/Wasm code being run. We were previously setting this flag before doing the parameter conversions, and if these conversions triggered a Wasm property getter then we would try to set the flag twice. With this change, we wait until after all argument conversions are done to set the flag. Bug: chromium:769846 R=bradnelson@chromium.org Change-Id: Ia4b56df45619dcad69f3750bb33cacfedcaeb5b2 Reviewed-on: https://chromium-review.googlesource.com/693414 Commit-Queue: Brad Nelson <bradnelson@chromium.org> Reviewed-by: Brad Nelson <bradnelson@chromium.org> Cr-Commit-Position: refs/heads/master@{#48244}
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- 29 Sep, 2017 1 commit
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Jakob Kummerow authored
Changing "DoubleDigitGreaterThan", which was consuming the result of a multiplication, to "ProductGreaterThan", which performs both steps. Bug: v8:6791 Change-Id: I7dbad350ff9b8228e11682d9691a1574ea5b0b58 Reviewed-on: https://chromium-review.googlesource.com/683614Reviewed-by: Daniel Ehrenberg <littledan@chromium.org> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/master@{#48243}
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