- 24 Feb, 2022 8 commits
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v8-ci-autoroll-builder authored
R=machenbach@chromium.org Change-Id: I9866742528d47210d39fcdeda522dcf29bdba38e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3486679Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/main@{#79249}
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Clemens Backes authored
{FreePages} is never expected to fail, and each caller wraps the call in a CHECK macro. In order to learn more about failures, this CL moves the CHECK inside of {::FreePages}, to fail whenever the {PageAllocator} fails to free pages. As a next step, I'll audit our {PageAllocator} implementations to ensure that none of them return {false} for {FreePages}. Note that this is already the case for the gin platform (chromium). R=mlippautz@chromium.org Bug: v8:12656, chromium:1299735 Change-Id: Ib61be6cc8da0110ead2db1ad005728bd061e0243 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3484321Reviewed-by:Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/main@{#79248}
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Leszek Swirski authored
Maglev is mid-tier optimising compiler designed mainly for compilation speed that can still generate good code for straightforward JS. This initial commit is an MVP for Maglev which can compile and run some very simple code, and sets up a framework that we can build upon. Design: https://docs.google.com/document/d/13CwgSL4yawxuYg3iNlM-4ZPCB8RgJya6b8H_E2F-Aek/edit# Bug: v8:7700 Change-Id: I5ae074ae099126c2c0d50864ac9b3d6fa5c9e85a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483664Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#79247}
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Tobias Tebbi authored
Bug: v8:12655 Change-Id: I1ae4d546b7232fe30f716c5a9913f895637761f0 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3487546 Auto-Submit: Tobias Tebbi <tebbi@chromium.org> Reviewed-by:
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Liu Yu authored
Port commit c7e47c30 Bug: v8:7700 Change-Id: I59d5e483867118fa8efc50cc52e00bd3321fa01a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3487428 Auto-Submit: Yu Liu <liuyu@loongson.cn> Reviewed-by:
Zhao Jiazhong <zhaojiazhong-hf@loongson.cn> Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn> Cr-Commit-Position: refs/heads/main@{#79245}
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Anton Bikineev authored
Bug: chromium:1300105 Change-Id: I89d08662a81bec6da7f1565c8fc582edc69781d5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3485682 Auto-Submit: Anton Bikineev <bikineev@chromium.org> Reviewed-by:
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v8-ci-autoroll-builder authored
Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/b867f20..901474b Add an option to not add the stubdata.cpp file. (Harry Terkelsen) https://chromium.googlesource.com/chromium/deps/icu/+/901474b R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com,ftang@chromium.org Change-Id: I2f3b4c2123e86c42c5f2916101539dcbeb3dda04 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3487130 Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/main@{#79243}
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/51ff1c6..9a383ac Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/93c1552..893aa03 Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/4ac0eac..08a8050 Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/64f5f26..36d41ce R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com Change-Id: Ie040ea1c181ff59228fda9639943958e16404007 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3486677 Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/main@{#79242}
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- 23 Feb, 2022 27 commits
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Dominik Inführ authored
Unlike regular marking code we can encounter client references in a shared GC, so we need a bail out here as well. Bug: v8:11708, v8:12647 Change-Id: Ie5ccb66206a8dca7d7bb08c75c90ce4999ed5a78 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483663Reviewed-by:
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Shu-yu Guo authored
The external project is effectively abandoned. Fork and move it in-tree for easier maintenance and Python 3 migration. Bug: chromium:1296209 Change-Id: I4ff97749acb2895bd8433c08b2a4ff109c90cda2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3475086Reviewed-by:
Adam Klein <adamk@chromium.org> Commit-Queue: Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/main@{#79240}
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Darius M authored
Bug: v8:12484 Change-Id: I44c2028efadbd70e7711f01d107995e0462f05d4 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3477094Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Darius Mercadier <dmercadier@chromium.org> Cr-Commit-Position: refs/heads/main@{#79239}
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George Wort authored
Negative offsets from the stack pointer are prohibited by the simulator so add a check to catch this at compile time. This DCHECK is currently tripped by the v8_enable_builtins_profiling and --turbo_force_mid_tier_regalloc flags causing the mid-tier register allocator to be used. Bug: chromium:1299793 Change-Id: I0d11e584178cc08a500e563fa213737a93b10bad Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483660Reviewed-by:
Clemens Backes <clemensb@chromium.org> Reviewed-by:
Maya Lekova <mslekova@chromium.org> Commit-Queue: Martyn Capewell <martyn.capewell@arm.com> Cr-Commit-Position: refs/heads/main@{#79238}
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Milad Fa authored
Port c7e47c30 Original Commit Message: A collection of smallish cleanups and improvements for safepoints. Maintainability: - The class names were not very clear; move Safepoint inside SafepointTableBuilder to clarify that this wrapper class is used during codegen. - Rename DefinePointerSlot/DefineRegister to DefineTaggedStackSlot/DefineTaggedRegister for clarity. - Use named constants instead of -1. - DefineTaggedRegister has no connection to kNoDeoptIndex, remove the DCHECK and comment. - Remove the unused kNumSafepointRegisters constant + other dead code. - Small clarifications in CommonFrame::IterateCompiledFrame. - Rename has_safepoint_info to uses_safepoint_table and refactor s.t. `stack_slots` can be used when `uses_safepoint_table == false`. In this case it just returns 0. Perf: - During codegen, represent stack slots as a growable bit vector instead of a list of int indices. Extend GrowableBitVector functionality to support the above. - Track the minimum index instead of iterating all stack slots in all safepoints before encoding. R=jgruber@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: Ifef2d95f1e4a064d85d4ce437b1d12ae9796336f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3484701Reviewed-by:
Joran Siu <joransiu@ca.ibm.com> Commit-Queue: Milad Farazmand <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/main@{#79237}
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Michael Lippautz authored
This is a reland of dec62c2d Revert was not necessary as test was independently flaking. Original change's description: > heap: Factor out raw allocation functions into HeapAllocator > > This CL is mostly mechanic and provides runtime and static > dispatch for allocation of objects using HeapAllocator. > > Future CLs will remove the Heap bottelenecks. > > Bug: v8:12615 > Change-Id: Id2becf7da4bd5273f96abc0e1a4ac6c04bddb1cb > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474674 > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> > Commit-Queue: Michael Lippautz <mlippautz@chromium.org> > Cr-Commit-Position: refs/heads/main@{#79229} Bug: v8:12615 Change-Id: I505ebde7afd2b0d03e11ef4cbcf1d4d09c6826a1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3484322 Commit-Queue: Michael Lippautz <mlippautz@chromium.org> Auto-Submit: Michael Lippautz <mlippautz@chromium.org> Reviewed-by:
Dominik Inführ <dinfuehr@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/main@{#79236}
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Jakob Gruber authored
It's no longer needed. Bug: v8:12552 Change-Id: I3522ab621001ee07ce7037888934279e4050dea9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3484318 Auto-Submit: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
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Corentin Pescheloche authored
To avoid leaking VMState cross origin leverage existing FilterContext to filter out VMSTates. GC State is the exception as it is not coupled to any native context and is always included. Bug: chromium:1263871 Change-Id: I5cab8620460f4db24fa183c891cb0c43996e95c4 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3465735 Auto-Submit: Corentin Pescheloche <cpescheloche@fb.com> Reviewed-by:
Camillo Bruni <cbruni@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/main@{#79234}
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Jakob Gruber authored
A collection of smallish cleanups and improvements for safepoints. Maintainability: - The class names were not very clear; move Safepoint inside SafepointTableBuilder to clarify that this wrapper class is used during codegen. - Rename DefinePointerSlot/DefineRegister to DefineTaggedStackSlot/DefineTaggedRegister for clarity. - Use named constants instead of -1. - DefineTaggedRegister has no connection to kNoDeoptIndex, remove the DCHECK and comment. - Remove the unused kNumSafepointRegisters constant + other dead code. - Small clarifications in CommonFrame::IterateCompiledFrame. - Rename has_safepoint_info to uses_safepoint_table and refactor s.t. `stack_slots` can be used when `uses_safepoint_table == false`. In this case it just returns 0. Perf: - During codegen, represent stack slots as a growable bit vector instead of a list of int indices. Extend GrowableBitVector functionality to support the above. - Track the minimum index instead of iterating all stack slots in all safepoints before encoding. Bug: v8:7700 Change-Id: If409bc42c825d47fc0074fce51e3b963fd080806 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483659Reviewed-by:
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Igor Sheludko authored
This is a follow-up fix for https://chromium-review.googlesource.com/c/v8/v8/+/3482436 which introduced a new check to Map verification. Bug: v8:10391 Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg_ng Change-Id: I8c02354bc159259c7157b296939790d0fc2c31c4 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483662Reviewed-by:
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Tobias Tebbi authored
This reverts commit dec62c2d. Reason for revert: bot failures Original change's description: > heap: Factor out raw allocation functions into HeapAllocator > > This CL is mostly mechanic and provides runtime and static > dispatch for allocation of objects using HeapAllocator. > > Future CLs will remove the Heap bottelenecks. > > Bug: v8:12615 > Change-Id: Id2becf7da4bd5273f96abc0e1a4ac6c04bddb1cb > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474674 > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> > Commit-Queue: Michael Lippautz <mlippautz@chromium.org> > Cr-Commit-Position: refs/heads/main@{#79229} Bug: v8:12615 Change-Id: I55bf6c6a857d853462b11251e767c44fc6fa2edd No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483665 Auto-Submit: Tobias Tebbi <tebbi@chromium.org> Owners-Override: Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Cr-Commit-Position: refs/heads/main@{#79231}
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Benjamin Kramer authored
- std::memory_order is no longer an enum, remove the double qualification. P0439R0. - `icu::StringPiece(nullptr, 0)` is now ambiguous due to char8_t no longer being equal to char. Use the default constructor. P0482R6. - WasmGlobal is aggregate initialized, remove the default ctor. It's move-only anyways because some of its members are. P1008R1. - Remove stray `inline` keyword Clang warns about. Change-Id: I63dca25350a4e560779dc637c3bf637a385dd0c8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472497 Auto-Submit: Benjamin Kramer <kramerb@google.com> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Thibaud Michaud <thibaudm@chromium.org> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org> Cr-Commit-Position: refs/heads/main@{#79230}
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Michael Lippautz authored
This CL is mostly mechanic and provides runtime and static dispatch for allocation of objects using HeapAllocator. Future CLs will remove the Heap bottelenecks. Bug: v8:12615 Change-Id: Id2becf7da4bd5273f96abc0e1a4ac6c04bddb1cb Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474674Reviewed-by:
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Anton Bikineev authored
Use class instead of lambda for static constexpr comparator (looks like a bug in gcc). Bug: chromium:1029379 Change-Id: I5caebacba2550bb206514f6e989d44361995f368 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3484315Reviewed-by:
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Igor Sheludko authored
Embedder fields are located between JSObject header and inobject fields and there must be no gaps. This CL adds respective check to Map verification and fixes existing issues. Bug: v8:10391 Change-Id: If55652095588f8704c9a375fb86be1599816aa86 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3482436 Auto-Submit: Igor Sheludko <ishell@chromium.org> Reviewed-by:
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Kim-Anh Tran authored
When triggering a step out action, we check whether we already are at a return or suspend location. If not, we first flood all return positions with breakpoints, set the fast_forward_to_return_ flag and continue. With the new way of reporting instrumentation breakpoints, we now may get into the situation where we stopped on an instrumentation, but may still need to continue until we reach the return point for the step out. This CL fixes a bug in which we ran into a DCHECK that expected us to stop on a return location (since fast_forward_to_return_ is set to true), but we didn't. Drive-by: adapt other stepping tests to properly wait for all pauses Bug: chromium:1229541 Change-Id: Ie5fd358922f4cdaf1f8584bb0b35e87b0e221fb8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3480094Reviewed-by:
Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Kim-Anh Tran <kimanh@chromium.org> Cr-Commit-Position: refs/heads/main@{#79226}
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Samuel Groß authored
For the purpose of graph verification, a SandboxedPointer is equivalent to a Word64. The SandboxedPointer representation only affects lowering, which needs to perform encoding/decoding of the pointer when storing/loading it to/from the heap. As such, this CL promotes kSandboxedPointer to kWord64 representation for graph verification. Bug: v8:10391 Change-Id: I466f03dc7bbe9ed8f7b4f431aee5b14bd6db3d31 Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483658Reviewed-by:
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Marja Hölttä authored
This generates snapshots which are quicker to deserialize since there are less forward references (item referring to another item with a greater ID). Bug: v8:11525 Change-Id: Ib5dce296fca57dae4c0d9bc98f97fe8440c9be8a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3483657Reviewed-by:
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Liu Yu authored
Port commit b8b32f6b Change-Id: I5592b4027715d5d3544435718c9e1161cf69f3e2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3482480 Auto-Submit: Yu Liu <liuyu@loongson.cn> Reviewed-by:
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Camillo Bruni authored
- List the current v8 version - Minor code cleanup Change-Id: Ic7a89e42d27465cc5df8e2249eaeacf8ca1eb6a7 No-Try: true No-Presubmit: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3477034 Auto-Submit: Camillo Bruni <cbruni@chromium.org> Reviewed-by:
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Anton Bikineev authored
Custom callbacks assume that untraced pointers always point to valid, not freed objects. They must make sure that upon callback completion no UntracedMembers point to an unreachable object. This may not hold true if a custom callback for an old object operates with a reference to a young object that was freed on a minor collection cycle. To maintain the mentioned invariant, the CL calls custom callbacks for old objects on every minor collection cycle. The alternative options could be: 1) Replacing all UntracedMembers with WeakMembers, since WeakMember supports tracing and the barrier. 2) Emitting the generational barrier for UntracedMember + tracing UntracedMember on minor collection cycles. The first option requires changing multiple use sites and can bring some performance regression. The second option requires changing the GC logic and the semantics of UntracedMember. Bug: chromium:1029379 Change-Id: I9bb89e4787daf05990feed374dceca940be7be63 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472499Reviewed-by:
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Jakob Gruber authored
- Move feedback / SP into TieringManager. - Rename OnInterruptTickFromBytecode to OnInterruptTick (it's called from both Code and Bytecode). - Remove the SealHandleScope / HandleScope dance. Bug: v8:7700 Change-Id: I800542deb3805097a589b7766907efb6f40c7dae Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3467875Reviewed-by:
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Liu Yu authored
Port commit 1b437aa8 Bug: v8:11708 Change-Id: I717ef7a7cb270580c14114d19f976f999f095185 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3482489 Auto-Submit: Yu Liu <liuyu@loongson.cn> Reviewed-by:
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Lu Yahan authored
Change-Id: I4b83907b735994a729b57b9c4a75d3672ce78b15 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3482916Reviewed-by:
ji qiu <qiuji@iscas.ac.cn> Auto-Submit: Yahan Lu <yahan@iscas.ac.cn> Reviewed-by:
Yahan Lu <yahan@iscas.ac.cn> Commit-Queue: Yahan Lu <yahan@iscas.ac.cn> Cr-Commit-Position: refs/heads/main@{#79218}
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Benedikt Meurer authored
Previously we'd hold on to Script objects strongly after they are considered unreachable by V8 itself, and keep them around for the V8DebuggerAgent cache (whose upper limit can be controlled with a parameter to `Debugger.enable`). This CL changes that to instead copy out the script source and the WebAssembly bytecode (depending on whether it's JavaScript or Wasm) to the C++ heap and keep it cached there. Fixed: chromium:1295659 Bug: chromium:1246884 Change-Id: Idfcd7172715eafca6b011826ae03a573d58803f2 Doc: https://bit.ly/v8-inspector-script-caching Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472082Reviewed-by:
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/eaff712..51ff1c6 Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b718bf9..4ac0eac Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/42cf2ac..64f5f26 Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/cd494c4..4823a85 R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com Change-Id: I2f68fd86dfdd7468f20f54f40696a792bc0b0d38 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3481266 Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/main@{#79216}
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Shu-yu Guo authored
This is a reland of 1025bf26 Changes since revert: - TSAN issue fixed by https://crrev.com/c/3475084 - Skip the shared-struct-workers test until shared GC deadlock is fixed, being tracked in v8:12645 Original change's description: > [shared-struct] Prototype JS shared structs > > Unlike the Stage 1 proposal, for simplicity the prototype does not add > any new syntax, instead opting for exposing a SharedStructType > constructor which takes an array of field names. This type constructor > returns constructors for shared structs. > > Shared structs can be shared across Isolates, are fixed layout, have no > prototype, have no .constructor, and can only store primitives and > other shared structs. > > The initial prototype does not have TurboFan support. > > Bug: v8:12547 > Change-Id: I23bdd819940b42139692bcdb53d372099b0d4426 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3390643 > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Reviewed-by: Marja Hölttä <marja@chromium.org> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org> > Commit-Queue: Shu-yu Guo <syg@chromium.org> > Cr-Commit-Position: refs/heads/main@{#79156} Bug: v8:12547 Change-Id: Ic1f5cf9fa9791ae2d5d5dc7c110614ca10b5d98e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3475078Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Marja Hölttä <marja@chromium.org> Commit-Queue: Shu-yu Guo <syg@chromium.org> Cr-Commit-Position: refs/heads/main@{#79215}
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- 22 Feb, 2022 5 commits
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Milad Fa authored
Port 1b437aa8 Original Commit Message: When we know that the value in a write barrier is a map, we know that we are not going to have an old-to-new reference (maps are always in old generation). Therefore we also don't really need the generational barrier in RecordWrite. While this is technically correct, we don't gain much from this optimization. The inline and out-of-line generated code for the barrier is still the same as in all other cases. Which means that outside marking we don't even reach the RecordWrite builtin. Most write barrier executions happen outside incremental marking, hence performance of the incremental marking barrier isn't critical. This CL always uses the full RecordWrite builtin using a flag in order to allow for an easy revert. This CL is motivated by the shared heap work, which needs an additional always-on barrier in the future (similar to OLD_TO_NEW) to keep a OLD_TO_SHARED remembered set up-to-date. While maps are always in the old generation, they maybe by located in the shared heap. R=dinfuehr@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com BUG= LOG=N Change-Id: I4e763419b3b007a668073e1577cbff9127d15940 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3481263Reviewed-by:
Junliang Yan <junyan@redhat.com> Commit-Queue: Milad Farazmand <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/main@{#79214}
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jameslahm authored
Originally, the check "if (orientation == ULOC_LAYOUT_LTR)" lead dir to be "rtl" when orientation is "ltr". Fix it to correct check "if (orientation == ULOC_LAYOUT_RTL)" Bug: v8:12531 Change-Id: I5fba29466c66b4fd05e31ddbe4083c16c19e9005 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3459928Reviewed-by:
Frank Tang <ftang@chromium.org> Reviewed-by:
Shu-yu Guo <syg@chromium.org> Commit-Queue: Frank Tang <ftang@chromium.org> Cr-Commit-Position: refs/heads/main@{#79213}
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Anton Bikineev authored
This CL refactors all remembered set logic from heap-base and explicit-management to a new class OldToNewRememberedSet. Bug: chromium:1029379 Change-Id: Id032b9dcc01af6f9bb9e546ed9bc6324da6d9b66 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472498Reviewed-by:
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Camillo Bruni authored
This CL prepares WebSnapshot for skipping and re-injecting external references in the web snapshot. External references are encoded as separate object type and allows us to create partial snapshots at runtime and reconnect a deserialised snapshot to an existing object graph. Part II will also collect all objects which cannot be serialized by the web-snapshot serializer. Usage: snapshot = %WebSnapshotSerialize(root, skip_externals); object = %eWebSnapshotDeserializ(snapshot, replaced_externals); Drive-by-changes: - Reduce JSObject Map size in serializer (we ended up with 4 embedder fields) - Avoid adding non-HeapObject to the discovery_queue_ - Split off ReadXXX handlers into separate functions Bug: v8:11525 Change-Id: Ia6a9914259614c6c288667621b38daa0202d4d72 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3461936Reviewed-by:
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Benedikt Meurer authored
When calling `Runtime.getProperties` with `accessorPropertiesOnly` we previously did not report any private fields at all, although it is possible to define private accessors. Bug: chromium:1296855 Change-Id: I18b84bfc81449d224738ba3de1f0c41c234025b2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3477112 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Kim-Anh Tran <kimanh@chromium.org> Auto-Submit: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/main@{#79210}
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