- 03 Feb, 2021 9 commits
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Mythri A authored
OSR compilations happen on main thread and the functions that are called from would have been already optimized. Also this code is only used for this invocation. So to limit the amount of time spent on main thread we could do a quick Turboprop compilation instead of a highly optimized TurboFan compilaiton. Change-Id: Ifcdcb5c855d8a9a56b13c1940b4ee0ed3bfb4d67 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2659257 Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#72505}
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Michael Achenbach authored
Bug: chromium:1174040 Change-Id: I2ee539e5074707ac93f97a9a3a131e9c2745cdbe Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672180Reviewed-by:
Maya Lekova <mslekova@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#72504}
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Michael Lippautz authored
Adds testing API that can only be used after enabling it on a heap. The call that enables testing is only provided via v8_for_testing or cppgc_for_testing build targets which protects against misusing from production code. Change-Id: I24a8f5543a2bb479481384e2c555d231383e5d12 Bug: chromium:1056170 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667513Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Omer Katz <omerkatz@chromium.org> Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#72503}
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Bill Budge authored
- Fixes some incorrect assumptions about padding in the code generation. Slots may have apparent extra padding when allocation fragments go unused. - Reworks 32 bit push code to simplify skipping slot gaps when 'push' instructions are used. - Adds a ElementSizeInPointers function on machine representations. Bug: chromium:1171759,v8:9198 Change-Id: I029e300fa9c306d7e35344576fd1c68857cf2bca Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2660379 Commit-Queue: Bill Budge <bbudge@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#72502}
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Thibaud Michaud authored
R=ahaas@chromium.org,ulan@chromium.org Bug: v8:8091 Change-Id: Ia826e18bd06b5e6d401ff43b33b43b4e4c2a69db Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2672022Reviewed-by:
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Sathya Gunasekaran authored
IsAnyInitialArrayPrototype doesn't need an handlified input argument as it doesn't cause GC. This improves performance of MapData::MapData as canonical handle scope creation is expensive. Change-Id: I2e1a46354276857b64867ea3e994356faef8950e Bug: v8:9684 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2671659 Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by:
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Seth Brenith authored
When generating getters, Torque needs to decide whether to perform a normal or relaxed load. Thus far, it has used the somewhat non-obvious logic that any indexed field with tagged non-smi data gets relaxed loads. This change adds a new annotation @relaxedRead to be consistent with the existing @relaxedWrite annotation. I added @relaxedRead annotations on any field that previously had this automatic behavior and whose getter is called, except for those in ScopeInfo because I'm relatively confident that it doesn't need relaxed access. Bug: v8:7793 Change-Id: I9987eea13760b967f1b8a3189b69742e55140c30 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2600113 Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Cr-Commit-Position: refs/heads/master@{#72499}
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Leszek Swirski authored
Fix some trailing whitespace issues in files in the tools directory. Change-Id: If9e9b1dab1d6f521e20619a2a1d093749f0528d9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2671660 Auto-Submit: Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Camillo Bruni <cbruni@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#72498}
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Santiago Aboy Solanes authored
Also access the DescriptorArray through GetPropertyKey concurrently if the FLAG_turbo_direct_heap_access is on. Bug: v8:7790 Change-Id: I29e5895fefc3653f954ba56aa85218121402e7ed Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653232Reviewed-by:
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- 02 Feb, 2021 29 commits
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Milad Fa authored
Port 45b99aaa Original Commit Message: In https://crrev.com/c/2645694 we push the full q registers before lazy compile, but we did not change the fixed frame size to account for the wider registers being pushed. This manifested in the frame having data like: (gdb) x/10xg start.ptr_ 0x7f5576ff3eb0: 0x0000000000000000 0x0000336b08202759 0x7f5576ff3ec0: 0x7ff000007f801000 0x0000000000000000 0x7f5576ff3ed0: 0x7ff000007f801001 0x0000000000000000 0x7f5576ff3ee0: 0x7ff000007f801002 0x0000000000000000 0x7f5576ff3ef0: 0x7ff000007f801003 0x0000000000000000 The GC then walks part of this frame, thinking that 0x7ff000007f801003 is a heap object, and then crashes. Add some static_asserts (similar to builtins-x64) to remind ourselves that the pushed registers have to match the size in frame constants. R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: I994f1b7fecbb24ea97d846b1eed98201bc3b08ad Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669308Reviewed-by:
Junliang Yan <junyan@redhat.com> Commit-Queue: Milad Fa <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/master@{#72496}
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Ng Zhi An authored
Code sequence from https://github.com/WebAssembly/simd/pull/379, and exactly the same as x64, with minor tweaks for ExternalReferenceAsOperand. Bug: v8:11002 Change-Id: Icbfdac62b21c2734ad4886b3d48f34e29f7a8222 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664860 Commit-Queue: Zhi An Ng <zhin@chromium.org> Reviewed-by:
Deepti Gandluri <gdeepti@chromium.org> Cr-Commit-Position: refs/heads/master@{#72495}
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Milad Fa authored
Port 910d92e2 Original Commit Message: This is a partial revert of https://crrev.com/c/2457669 to add back i64x2.ne and i64x2.all_true, which were accepted into the proposal (https://github.com/WebAssembly/simd/issues/419). This only implements it for x64 and arm64 on TurboFan, other archs and Liftoff will come later. R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: I9aedc94f665a7e02426e0abe44cea72176063942 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668830Reviewed-by:
Milad Fa <mfarazma@redhat.com> Commit-Queue: Milad Fa <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/master@{#72494}
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Ng Zhi An authored
Bug: v8:11217 Change-Id: I6e61b11babc0baecf7b1982ef779b941d3344182 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667971Reviewed-by:
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Milad Fa authored
V8 uses the same set of fp param registers as Simd param registers. As these registers are two different sets on ppc we must make sure to also save them when Simd is enabled. Check the comments under crrev.com/c/2645694 for more details. Port 3b302d5c Original Commit Message: If a lazy compilation happens in between 2 Wasm calls, we need to save the full Q register, since we can have live v128 values. R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: Icdd0a6d38225a866b61651ff406598c144c25ebf Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667952Reviewed-by:
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Ng Zhi An authored
We were hitting an implementation defined behavior in this instruction: - v is clamped to uint8_t::min and uint8_t::max - then we static_cast<int8_t>(v) - any values that don't fit in int8_t (> 127) hits and implementation defined behavior We reuse base::saturated_cast here instead to avoid this undefined behavior. Drive-by cleanup of test cases to make the signed/unsigned cases more explicity. Bug: v8:11372 Change-Id: I4e92cdfb685d74bd5436ba25f1c00db49a231221 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2659501 Commit-Queue: Zhi An Ng <zhin@chromium.org> Reviewed-by:
Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#72491}
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Thibaud Michaud authored
R=clemensb@chromium.org Bug: v8:8091 Change-Id: Id2f0b4635ee235c592a969a41d1f50ed677150f2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667857Reviewed-by:
Clemens Backes <clemensb@chromium.org> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/master@{#72490}
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Ng Zhi An authored
This is a partial revert of https://crrev.com/c/2457669 to add back i64x2.ne and i64x2.all_true, which were accepted into the proposal (https://github.com/WebAssembly/simd/issues/419). This only implements it for x64 and arm64 on TurboFan, other archs and Liftoff will come later. Bug: v8:11347,v8:11348 Change-Id: I86934478760e3d501ecdb3ce6c9b702764cc0838 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2665005Reviewed-by:
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Junliang Yan authored
Change-Id: I6b0aa0daab07728f5a524ecba289276c7fa33a08 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668568Reviewed-by:
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Marja Hölttä authored
Now with more fixes. Bug: chromium:1162473, v8:11383 Change-Id: I54751cef03f6b2b1dc70324486441c9b0b011cc1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667512 Auto-Submit: Marja Hölttä <marja@chromium.org> Commit-Queue: Marja Hölttä <marja@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by:
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Junliang Yan authored
Change-Id: I34552a97244c5f4c343d16e5093676e3af5c210b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2667510Reviewed-by:
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Benedikt Meurer authored
Previously the WebAssembly debugger support completely ignored the condition on breakpoints. With this change, we check conditions (snippets of JavaScript) properly, which enables not only conditional breakpoints in the front-end, but also other features like 'Never pause here' (which simply sets `false` as condition) and log points. Fixed: chromium:1173007 Bug: chromium:1173006 Change-Id: I02c740d383378a1f4cc08134ad571bea08e9a905 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666690Reviewed-by:
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Clemens Backes authored
We are often stepping multiple times without inspecting the state in-between. Hence, the generated debug side table is often not being used. Instead of always generating it, we can generate it lazily on demand, which can avoid the need to generate it at all. R=thibaudm@chromium.org TEST=inspector/debugger/wasm-stepping Bug: chromium:1172299 Change-Id: I9b9ff4485d65d720d23585856b3d672925460667 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664446 Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by:
Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/master@{#72484}
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Santiago Aboy Solanes authored
Also, enable concurrent GetBackPointer(). Bug: v8:7790 Change-Id: If92cb7cdd9e6f5eb9a636764ca8abe2fc2c05ab2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2650205 Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org> Reviewed-by:
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Jakob Kummerow authored
When constant-folding the test based on static types in the function body decoder, we have to ensure Liftoff's value stack is properly updated. Fixed: chromium:1172912 Change-Id: I618992608882b850a8a4bce0b267ce456e4c2a40 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664447Reviewed-by:
Manos Koukoutos <manoskouk@chromium.org> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Auto-Submit: Jakob Kummerow <jkummerow@chromium.org> Cr-Commit-Position: refs/heads/master@{#72482}
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Clemens Backes authored
This reverts commit a850668c. Reason for revert: new test flaking on many bots, e.g. https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Win32/31068/overview Original change's description: > [d8] Fix a crash when getting the worker's onmessage handler > > Bug: chromium:1162473 > Change-Id: Ided2f52882aaf02e1dc9a8d0ba883fedf029464d > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2663004 > Reviewed-by: Camillo Bruni <cbruni@chromium.org> > Commit-Queue: Marja Hölttä <marja@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72473} TBR=marja@chromium.org,cbruni@chromium.org Change-Id: I5ec056185967974a94fd61baec8a75e855e1a272 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: chromium:1162473, v8:11383 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666693Reviewed-by:
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Leszek Swirski authored
Add a simple backtrace/bt command to the simulator debugger, which does the frame-pointer stack walk and dumps pc/fp/sp for each frame. This is strictly less powerful than the full JS stack dump, but can be used to debug issues with corrupted frames that prevent the JS stack dumper from working correctly. Change-Id: I26cc962ab8d22c0a219d6a35548544602aa89418 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666688 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/master@{#72480}
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Leszek Swirski authored
Extract out the command processing from Simulator::Debug(), and expose it to gdb as a new 'sim' command. Example usage: (gdb) sim p x15 (gdb) sim stack The sim command will execute that one command, and will return to gdb. For a list of all commands, you can call (gdb) sim help Note that sim won't resume simulator execution until gdb continues execution; for example, `sim next` will set a breakpoint on the next instruction, and will return to gdb. The user then has to continue execution in gdb, at which point the simulator will break. The user can then re-enter gdb with the gdb command. This will look like this: (gdb) sim next (gdb) continue ... sim> gdb (gdb) ... Change-Id: I678e71e2642d8427950b5f7ed65890ceae69e18d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2664448 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Reviewed-by: -
Clemens Backes authored
Conditional breakpoints are not implemented yet; the condition is just ignored for wasm. This CL adds a test for conditional breakpoints. The output is expected to change once the implementation is finished. R=bmeurer@chromium.org Bug: chromium:1173007 Change-Id: I15e0053ec8b57e28b8eadc208f35bbf70437682e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666692 Commit-Queue: Clemens Backes <clemensb@chromium.org> Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#72478}
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Manos Koukoutos authored
Changes: - Rename ObjectReferenceKnowledgs::object_must_be_data_ref to reference_kind, introduce an enum to describe it. - In both compilers, remove the dynamic check whether the object is an array/struct. This is known statically. Instead, if we are checking for a function, just check for rtt equality and exit. - Remove is_data_ref_type(), replace it in the compilers with calls to has_signature(). - Restructure AllocateSubRtt() to handle function rtts properly. - Add a couple execution tests. Bug: v8:7748 Change-Id: I46fbbfe2f2a7d29b583de0d536d71c534b98322f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661460Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/master@{#72477}
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Jakob Gruber authored
The removed flags are: 1. --turbo-nci-as-midtier 2. --turbo-nci-cache-ageing 3. --turbo-nci-delayed-codegen Flag 1. was used by a testing mode that is no longer used. Flags 2. and 3. were used to experiment with codegen and cacheing heuristics, no longer needed now that work is suspended. Bug: v8:8888 Change-Id: Ib4a89f09340c2d94ee7688928c8235276c1f1032 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661461 Auto-Submit: Jakob Gruber <jgruber@chromium.org> Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#72476}
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Mythri A authored
Optional chain checks check if the object is null or undefined and if it is we don't perform the load but just load accumulator with undefined. For calls the value of the accumulator needs to be stored in the callee register. We were doing this only when the object isn't null or undefined. This cl fixes it by storing it to callee always. Bug: chromium:1171954 Change-Id: I391af18e783486fed70be561027bd8aba97b93cc Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2665466 Commit-Queue: Mythri Alle <mythria@chromium.org> Reviewed-by:
Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/master@{#72475}
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Georg Neis authored
Boolean denotes the boolean JS values and doesn't make sense for the result of a WordEqual. Change-Id: Id504bbe1171c2603ed4070ed922fcafd94d846c1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666689 Commit-Queue: Georg Neis <neis@chromium.org> Commit-Queue: Maya Lekova <mslekova@chromium.org> Auto-Submit: Georg Neis <neis@chromium.org> Reviewed-by:
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Marja Hölttä authored
Bug: chromium:1162473 Change-Id: Ided2f52882aaf02e1dc9a8d0ba883fedf029464d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2663004Reviewed-by:
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Camillo Bruni authored
Add comments and simpify code a bit for less chance of cargo culting. Change-Id: Ica3fc60b0b7c11cc99a4c9ba9e3255662bbbb6bc Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642459 Commit-Queue: Camillo Bruni <cbruni@chromium.org> Reviewed-by:
Victor Gomes <victorgomes@chromium.org> Cr-Commit-Position: refs/heads/master@{#72472}
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Liu Yu authored
Port: 3b302d5c Port: 45b99aaa Besides, removed redundant DCHECK. Change-Id: Ifac825ae7670b075750603b2c61a3d60a85cc373 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2662581Reviewed-by:
Zhao Jiazhong <zhaojiazhong-hf@loongson.cn> Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn> Auto-Submit: Liu yu <liuyu@loongson.cn> Cr-Commit-Position: refs/heads/master@{#72471}
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LiuYu authored
Port: 6d3a53e7 Bug: v8:11331 Change-Id: I6aaba8e4d25e01121f0f7e01f67af3b5c7202ba6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666712 Auto-Submit: Liu yu <liuyu@loongson.cn> Reviewed-by:
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/dce1147..dc9dc45 Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/9904915..fc5af1a Rolling v8/third_party/aemu-linux-x64: Y_rckHsnBv6dqNUbG4QoVkl3njqEx7ewCNGmqOE_h1MC.._nJMIPzu-ykpL-XPjf14IZ3CAFT3iQRtsbzyiSm9u7QC Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/91735e2..4920147 Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/cb07c52..8c95595 Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/c876c8f..bf44340 Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/9290907..ec98581 TBR=machenbach@chromium.org,tmrts@chromium.org,v8-waterfall-sheriff@grotations.appspotmail.com Change-Id: Ic364444072e5b2405dc05d3cce7133585cce84c9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2666713Reviewed-by:
v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/master@{#72469}
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Michael Lippautz authored
- Allow downcasting construciton and assignment; - Add WeakCrossThreadPersistent::Lock() that safely retrieves a strong handle for a weak reference; Bug: chromium:1056170 Change-Id: I5f8d85a87c9955506dd87723ffb4c80d66770c04 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2663160 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
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- 01 Feb, 2021 2 commits
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Milad Fa authored
Port 6d3a53e7 Original Commit Message: This is a reland of commit 9c09c227. The fix for gc stress failure is merged: https://crrev.com/c/2656857. Original change's description: > Bug: v8:11331 > Change-Id: Ie394ec841a1a1c4030c4f589eac2cee8a6a2a1f9 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2639033 > Reviewed-by: Georg Neis <neis@chromium.org> > Reviewed-by: Deepti Gandluri <gdeepti@chromium.org> > Commit-Queue: Zhi An Ng <zhin@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72304} R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: I68991b81c18e06714d272f019dab7994419692bb Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2665894Reviewed-by:
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Junliang Yan authored
Port 07b03b83 Original Commit Message: c_entry_fp is normally cleared in `LeaveExitFrame`, but we adjust the frame without it in the exception path. This can cause the SafeStackFrameIterator to assume we have an exit frame and iterate over frames incorrectly, which for arm64 can cause pointer authentication failures with CFI enabled. Even without the pointer authentication failure, we iterate over frames incorrectly, so make this change for other architectures too. Also clear c_entry_fp in the beginning of JSEntry, after pushing it on the stack. Not doing this doesn't cause pointer authentication failures, but it will make the SafeStackFrameIterator assume we are executing C++ and miss the JS frames on top. R=georgia.kouveli@arm.com, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com, mfarazma@redhat.com BUG= LOG=N Change-Id: Id12286a0f18fce928f9e44825fc13cd0338bac46 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2665893Reviewed-by:
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