- 12 Feb, 2020 16 commits
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Michael Achenbach authored
This will allow sharing the configs between Python and JavaScript based fuzzers. No-Try: true Bug: chromium:1044942 Change-Id: Idd47ad31430cfed0629dbb5b9dd5fd2ef8c764f6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051951Reviewed-by:
Liviu Rau <liviurau@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/master@{#66243}
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Nico Hartmann authored
This reverts commit 137bfe47. Reason for revert: https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/13072 Original change's description: > [arm64] Protect return addresses stored on stack > > This change uses the Arm v8.3 pointer authentication instructions in > order to protect return addresses stored on the stack. The generated > code signs the return address before storing on the stack and > authenticates it after loading it. This also changes the stack frame > iterator in order to authenticate stored return addresses and re-sign > them when needed, as well as the deoptimizer in order to sign saved > return addresses when creating new frames. This offers a level of > protection against ROP attacks. > > This functionality is enabled with the v8_control_flow_integrity flag > that this CL introduces. > > The code size effect of this change is small for Octane (up to 2% in > some cases but mostly much lower) and negligible for larger benchmarks, > however code size measurements are rather noisy. The performance impact > on current cores (where the instructions are NOPs) is single digit, > around 1-2% for ARES-6 and Octane, and tends to be smaller for big > cores than for little cores. > > Bug: v8:10026 > Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782 > Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Reviewed-by: Georg Neis <neis@chromium.org> > Cr-Commit-Position: refs/heads/master@{#66239} TBR=rmcilroy@chromium.org,mstarzinger@chromium.org,neis@chromium.org,georgia.kouveli@arm.com Change-Id: I57d5928949b0d403774550b9bf7dc0b08ce4e703 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:10026 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051952Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org> Cr-Commit-Position: refs/heads/master@{#66242}
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9e32f61..e63171f Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/ea794b8..a7875df Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/64c5af3..1de518c Rolling v8/third_party/fuchsia-sdk: https://chromium.googlesource.com/chromium/src/third_party/fuchsia-sdk/+log/19c8ac5..b5a25d5 TBR=machenbach@chromium.org,tmrts@chromium.org Change-Id: I914ad4bb38f867a29308d91fe8734756a82e0157 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049873Reviewed-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@{#66241}
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Seth Brenith authored
The list of forward declarations required in the generated file bit-fields-tq.h is already somewhat unwieldy and will run into serious problems when we attempt to use enums that are defined within classes, such as JSDateTimeFormat::DateTimeStyle. After a brief discussion today, the cleanest solution we arrived at is to generate macros instead. Change-Id: I654e10efbab5a1a0a340fa565c51ff1da34badaa Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050830Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Reviewed-by:
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Georgia Kouveli authored
This change uses the Arm v8.3 pointer authentication instructions in order to protect return addresses stored on the stack. The generated code signs the return address before storing on the stack and authenticates it after loading it. This also changes the stack frame iterator in order to authenticate stored return addresses and re-sign them when needed, as well as the deoptimizer in order to sign saved return addresses when creating new frames. This offers a level of protection against ROP attacks. This functionality is enabled with the v8_control_flow_integrity flag that this CL introduces. The code size effect of this change is small for Octane (up to 2% in some cases but mostly much lower) and negligible for larger benchmarks, however code size measurements are rather noisy. The performance impact on current cores (where the instructions are NOPs) is single digit, around 1-2% for ARES-6 and Octane, and tends to be smaller for big cores than for little cores. Bug: v8:10026 Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782 Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#66239}
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Michael Achenbach authored
We ensure now that fuzzers don't produce the f.arguments pattern and instead replace it with a random variable. No-Try: true Bug: chromium:1044942, chromium:1020573 Change-Id: I899985f1a238f36d10fb22f76d93b7d5f444eab1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051944Reviewed-by:
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Michael Achenbach authored
This ports: https://crrev.com/c/2044885 TBR=nicohartmann@chromium.org Bug: chromium:1049700 Change-Id: Ib80c2a2e899a87bc7fb01961ef58946851017266 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051945Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Reviewed-by:
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Dominik Inführ authored
Enable --always-promote-young-mc by default. This enforces that the young generation is empty after a full GC to simplify the implementation of some features. For example array buffer sweeping already assumes that this flag is enabled. Bug: v8:10064 Change-Id: I9d3873b9eb7bec4de897c5c95bdc514d165265d1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051943Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Cr-Commit-Position: refs/heads/master@{#66236}
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Leszek Swirski authored
Clean-up a couple of CAS loops to avoid loading after a compare_exchange (which updates the old value), and to loosen the memory ordering to acquire-release to avoid unnecessary fences. Change-Id: Ifb8e5e5136f687ca5a71417a5d131a7023add054 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050390 Auto-Submit: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/master@{#66235}
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Santiago Aboy Solanes authored
We were calling setup for both the setup and the run. Bug: v8:10155 Change-Id: Id60df16ad8c98f443dc1b1a9a2155000999ab815 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2039431Reviewed-by:
Mythri Alle <mythria@chromium.org> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org> Cr-Commit-Position: refs/heads/master@{#66234}
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Michael Achenbach authored
Un-ignore some files that only failed in obsolete comparisons. We don't compare eager anymore and console functions are mocked out in d8 by now. The exponentiation operator bug doesn't repro anymore. No-Try: true Bug: chromium:1044942 Change-Id: I0a572836bc9a4a6aa4736447f638a522ff8e8168 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050400Reviewed-by:
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Sigurd Schneider authored
Coverage updates are sent as deltas, and this means that it is very important that the consumer gets /all/ updates; otherwise, the coverage information will be wrong. Previously, we introduces the ability into the back-end to send triggered updates, i.e. updates that are triggered by the back-end at interesting points in time. These updates are delivered via an event, and any consumer must process these events. This CL introduces a flag to startPreciseCoverage that controls whether the back-end is allowed to send such triggered updates on its own initiative. The default is `false` to maintain backwards compatibility with consumers that don't yet handle the events. Bug: chromium:1022031 Change-Id: Ie36a92a3b627b19ea4041f1b8da1ec66c6b9b771 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2043798Reviewed-by:
Yang Guo <yangguo@chromium.org> Reviewed-by:
Dmitry Gozman <dgozman@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#66232}
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Jakob Gruber authored
These tests rely on predictable opt & deopt timings. Also add the --opt flag to tests to force optimization even in configurations that contain the --no-opt flag. Bug: v8:9972,chromium:1049982 Change-Id: Ic161d188ebfae9aaae6a160d365413abedfee5f1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050402Reviewed-by:
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Sam Maier authored
This CL introduces, and turns on by default, compression for snapshots. The compression is handled in SnapshotCompression, which is a new static helper class for producing/consuming compressed SnapshotData. To turn off snapshot compression (accomplished by removing calls of Compress/Decompress) set the GN arg: v8_disable_snapshot_compression = true Bug: chromium:833361 Change-Id: If8abc3662e8473fbd0c94e443946fbea804a305e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1846066 Commit-Queue: Sam Maier <smaier@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#66230}
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Georg Neis authored
It's not sufficient to reset only the modules on the current DFS path. Bug: chromium:1050164 Change-Id: I00e5e12144ad70ac6371eea5e11590b72feaeecc Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049853 Auto-Submit: Georg Neis <neis@chromium.org> Reviewed-by:
Adam Klein <adamk@chromium.org> Commit-Queue: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#66229}
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Georg Neis authored
SourceTextModule::AddAsyncParentModule can allocate so it must be a static function. Bug: chromium:1050433 Change-Id: I86e58569d16e626ce3f85cc46ea5f376c2d06f3f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050383 Commit-Queue: Adam Klein <adamk@chromium.org> Auto-Submit: Georg Neis <neis@chromium.org> Reviewed-by:
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- 11 Feb, 2020 17 commits
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Johannes Henkel authored
"Remove ErrorSupport_.{h,cpp}.template as promised." https://chromium-review.googlesource.com/c/deps/inspector_protocol/+/2045151 https://chromium-review.googlesource.com/c/deps/inspector_protocol/+/2047663 New Rev: 1f2492b6768e8620ece36a784c8ecd7ae7091610 Change-Id: I4acc65f0aafa94e20921a3e9ff7843303034bb60 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2044951Reviewed-by: -
Jakob Gruber authored
This fixes a bug in lazy deopts caused by calls to the callback function in Array.prototype.reduce and reduceRight. The deopt continuation expects the *next* iteration's index value but we actually passed the current iteration's value. The user-visible effect of this bug was that sometimes, an unexpected additional call to the callback function would occur. It was introduced by https://crrev.com/c/1934329. Bug: v8:9972,chromium:1049982 Change-Id: Icfd2ef076209e20602f54d4662220e1d4c5d07ee Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049850 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
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Nico Hartmann authored
This CL significantly reduces the size of CSA files generated from torque by introducing only those Phis at block entry that are required and otherwise uses defined values directly. To do so it does: - Define a DefinitionLocation that represents where a value is defined. - For each block compute all the definitions that reach that block and introduce a phi iff the reaching definitions for a value are not the same for all predecessor blocks. - In CSAGenerator map all DefinitionLocations to variables, such that if the same value is used in multiple blocks, it is mapped to the same variable without the need to pass it along the jump. This reduces both the arguments passed to Goto, Branch, ... and the variables that need to be passed to Bind when the block's label is bound. This reduces the number of temporary variables significantly. Temporaries are declared outside of blocks now in order to be accessible from other blocks. Drive-by changes: - Sequences of SetSourcePosition calls are merged if no output is generated between them. - Dead blocks are no longer generated in release builds. Bug: v8:9861 Change-Id: I5c30e5376e93c424c3ebfc5144a08592d77ae61f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2037444 Commit-Queue: Nico Hartmann <nicohartmann@chromium.org> Reviewed-by:
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Leszek Swirski authored
Change-Id: I2fed918353fea7c4fe42d6aef6e064e143111057 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050392 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Auto-Submit: Leszek Swirski <leszeks@chromium.org> Reviewed-by:
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Maya Lekova authored
The Object::SetElement and JSObject::GetElement were the GC suspects. Fixed: v8:9995 Change-Id: Ia1f794188f08f0e2543a88eb4dc7a8b06dcb3deb Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050391Reviewed-by:
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Jakob Gruber authored
This reverts commit c0fbfcd8. Reason for revert: Fix found. Original change's description: > Revert [gasm] Implement ReduceArrayPrototypeReduce using the graph assembler > > Reverting due to a nondeterministic correctness issue bisected to this > change. The intent is to reland once we fully understand and have > fixed the problem. > > The original CL landed in https://crrev.com/c/1934329. > The revert on master is https://crrev.com/c/2049763. > The revert on 8.0 is https://crrev.com/c/2049764. > > Bug: v8:9972,chromium:1049982 > Change-Id: I171624bdeb18831e70869ae806c73529c240be4a > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049763 > Reviewed-by: Georg Neis <neis@chromium.org> > Commit-Queue: Jakob Gruber <jgruber@chromium.org> > Cr-Commit-Position: refs/heads/master@{#66215} TBR=neis@chromium.org,jgruber@chromium.org Change-Id: Id12a01dc72558639b26af58ff56cd0b11916eec2 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:9972, chromium:1049982 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050395Reviewed-by:
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Dominik Inführ authored
Before this CL array buffer counters were only decremented at the next GC. This CL makes freed_bytes_ an atomic variable which is incremented by the concurrent sweeping task. The main thread now also inspects this value when adding new JSArrayBuffers to update counters sooner. Bug: v8:10064 Change-Id: Ibcb245b541e806b95a3c2c42d3cc3affe7739e4d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047043 Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Reviewed-by:
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Dan Elphick authored
Adds DCHECK to Factory::AllocateRawWithImmortalMap to assert that the Map passed in is read_only_space, since it's passed in as a raw object. Bug: chromium:1049866 Change-Id: Ia7c6d5c99a4bc790ebcfb06e5ed55340964a5612 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049846 Commit-Queue: Dan Elphick <delphick@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Auto-Submit: Dan Elphick <delphick@chromium.org> Reviewed-by:
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Dan Elphick authored
This reverts commit 14d1b9e9. Reason for revert: Increases RuntimeStats/Group-JavaScript/duration Original change's description: > [compiler] Make StateValuesAccess methods inlinable > > This moves several simple StateValuesAccess methods as well as > SparseInputMask::InputIterator::IsReal into their header files so they > can be more easily inlined. This gives about a 7% improvement to the > BackgroundSelectInstructions runtime call stat. > > Also marks some methods called by the new methods as V8_PRIVATE_EXPORT > so component build test can build. > > Bug: v8:10051 > Change-Id: I3e34977a4fa660d3f4f55fd4f2c0b2370d5d2bc2 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2023559 > Reviewed-by: Georg Neis <neis@chromium.org> > Commit-Queue: Dan Elphick <delphick@chromium.org> > Cr-Commit-Position: refs/heads/master@{#66078} TBR=neis@chromium.org,delphick@chromium.org # Not skipping CQ checks because original CL landed > 1 day ago. Bug: v8:10051 Change-Id: I9168b524bc06562906a12a6ec0e948d6f90d4a7d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050387Reviewed-by:
Dan Elphick <delphick@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/master@{#66219}
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Jakob Kummerow authored
Reading an object property can allocate a HeapNumber (even with unboxed double fields turned off: we still use MutableHeapNumbers to store properties). Bug: chromium:1049859 Change-Id: I82228ccb98403b3db82671743f51b2e23f6636d1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050385 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Auto-Submit: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by:
Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#66218}
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Michael Achenbach authored
The assumtion that V8 has no output differences within a single line before a stack overflow, didn't hold. The prefix of e.g. console.info can lead to a difference in a recursive call. This change makes foozzie's output capping before a crash work on the level of characters instead of lines to fix this. No-Try: true Bug: chromium:1050942 Change-Id: I13f747caf4f5848d40c31bd4232811285bab3c17 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049844Reviewed-by:
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Toon Verwaest authored
Change-Id: Iebdf095600186988abd7b1f13a1a2d9f566e5d7c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049845 Commit-Queue: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Auto-Submit: Toon Verwaest <verwaest@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#66216}
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Jakob Gruber authored
Reverting due to a nondeterministic correctness issue bisected to this change. The intent is to reland once we fully understand and have fixed the problem. The original CL landed in https://crrev.com/c/1934329. The revert on master is https://crrev.com/c/2049763. The revert on 8.0 is https://crrev.com/c/2049764. Bug: v8:9972,chromium:1049982 Change-Id: I171624bdeb18831e70869ae806c73529c240be4a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049763Reviewed-by:
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Steve Blackburn authored
1. Fix typo introduced in prior commit. 2. Guard code so TPH does not attempt to use OffThreadSpace. Bug: v8:9533 Change-Id: I37eeff6a9c6ec4a7c479161a01345aa82c884e54 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047046Reviewed-by:
Peter Marshall <petermarshall@chromium.org> Reviewed-by:
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Leszek Swirski authored
Adds support for off-thread allocation to Script allocation and line-end calculation. This includes adding support for keeping/merging a script list on the OffThreadIsolate, and adding syntactical support for logging (in the future this could do actual logging). Bug: chromium:1011762 Change-Id: Id90f2ad7458e90e06f6926f1fce7ef7a1ef50b3d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2046884Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Reviewed-by:
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Steve Blackburn authored
Bug: v8:9533 Change-Id: Ia47af94bd24b3f9a8a3d39f79a8ed61f4f2d53ab Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047048Reviewed-by:
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/8ada491..9e32f61 Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/3b8094a..64c5af3 Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/7d1284a..10a302f TBR=machenbach@chromium.org,tmrts@chromium.org Change-Id: Ia023508780e6341f22d94e9879fbae24e1fff960 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049523Reviewed-by:
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- 10 Feb, 2020 7 commits
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Milad Farazmand authored
Port 9d3dc6f2 Original Commit Message: FunctionEntry StackChecks is one of the two cases where we generate a StackCheck bytecode. In these cases, we do stack check against the js limit (not to be confused with the real js limit). Their purpose is to be able to interrupt the running code. We can omit the FunctionEntry StackCheck by embedding its code into the InterpreterEntryTrampoline builtin. We save one bytecode per interpreted function. This change has rippling effects for optimized code, as well as the deoptimizer. R=solanes@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: If797a8acba7581c9c388ac09b5554c774c5993a2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2048124Reviewed-by:
Junliang Yan <jyan@ca.ibm.com> Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#66210}
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Dominik Inführ authored
Add CHECKs to make sure that ArrayBufferSweeper is only active when v8_enable_array_buffer_extension is set to true. Bug: v8:10064 Change-Id: I609d5e1230dca52fd8555d4401c3f60faf4c266c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047047Reviewed-by:
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Shu-yu Guo authored
Deprecate the following explicit FinalizationGroup APIs in favor of automatic handling of FinalizationGroup cleanup callbacks: - v8::Isolate::SetHostCleanupFinalizationGroupCallback - v8::FinaliationGroup::Cleanup If no HostCleanupFinalizationGroupCallback is set, then FinalizationGroup cleanup callbacks are automatically scheduled by V8 itself as non-nestable foreground tasks. When a Context being disposed, all FinalizationGroups that are associated with it are removed from the dirty list, cancelling scheduled cleanup. This is a reland of 31d8ff7a Bug: v8:8179, v8:10190 Change-Id: I704ecf48aeebac1dc2c05ea1c052f6a2560ae332 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2045723 Commit-Queue: Shu-yu Guo <syg@chromium.org> Reviewed-by:
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Milad Farazmand authored
Port 86d4b9f6 Original Commit Message: Each assembler has it's own way to place breakpoints: - stop() for arm, mips*, ppc* and s390. - debug() for arm64. - int3() for ia32 and x64. We can mandate a macro-assembler `DebugBreak()` method that all should implement so one can place a breakpoint in a portable way using a macro-assembler. This way also assemblers are in line with TurboFan, CSA, Torque and Liftoff which all have a DebugBreak() facility. R=pierre.langlois@arm.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: If2fb5ed99b4477142579e29fc5288d0768fd48c7 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2047463Reviewed-by:
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Santiago Aboy Solanes authored
FunctionEntry StackChecks is one of the two cases where we generate a StackCheck bytecode. In these cases, we do stack check against the js limit (not to be confused with the real js limit). Their purpose is to be able to interrupt the running code. We can omit the FunctionEntry StackCheck by embedding its code into the InterpreterEntryTrampoline builtin. We save one bytecode per interpreted function. This change has rippling effects for optimized code, as well as the deoptimizer. Bug: v8:10149, v8:9977, v8:9960 Change-Id: I6156de48b3bc0b519dd21190a8e6214fbe96c78d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1914218Reviewed-by:
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Michael Achenbach authored
We should not allow runtime functions that perform extra checks in differential fuzzing, as there we ignore crashes and dchecks entirely. Furthermore, this change whitelists some runtime functions for getting more coverage. Bug: chromium:1044942 Change-Id: Ie5d90bb53bc2d2bacc6635b1dcbe466605b33e12 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2041444 Commit-Queue: Michael Achenbach <machenbach@chromium.org> Reviewed-by:
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Dominik Inführ authored
Introduce separate counters for young and old array buffer bytes. They are used to keep the counter stable during sweeping when the array buffer lists are moved to the concurrent thread for sweeping. Bug: v8:10064 Change-Id: I0f11a634341873b4d21759c284c55beb26fe30a5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2045511 Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Reviewed-by:
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