- 06 Nov, 2019 17 commits
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Santiago Aboy Solanes authored
Previously we were only blocking verify_stub_graph and not FLAG_turbo_verify_machine_graph. This led to failures when FLAG_turbo_verify_machine_graph was active (e.g when it was set to "*"). Change-Id: I27b53f0bc1b544498d1d182903301347e5669013 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1893339Reviewed-by:
Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org> Cr-Commit-Position: refs/heads/master@{#64806}
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Michael Starzinger authored
R=clemensb@chromium.org TEST=cctest/test-api-wasm Change-Id: I4f3c7e215304bd9b89bb7fd21cda06fa3a18abac Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900458Reviewed-by:
Clemens Backes <clemensb@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#64805}
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Georg Neis authored
Bug: v8:9946 Change-Id: Ia7bde900a72d94e397ce0e19504a472a5c63f248 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900453Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Commit-Queue: Georg Neis <neis@chromium.org> Auto-Submit: Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#64804}
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Igor Sheludko authored
No-Tree-Checks: true No-Try: true Change-Id: Ibf9af30908eac161827b77052582c5c8a86ce401 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900463Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#64803}
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Santiago Aboy Solanes authored
Phis act as proxys: a phi's input has only 32 bits observed iff the phi's output has only 32 bits observed. When the Tagged Phi has only 32 bits observed, the Phi's MachineRepresentation changes to the Compressed counterpart. Also, update machine graph verifier so that Phis of Compressed accept Tagged inputs as well. Bug: v8:7703 Change-Id: I365d0b38f76edbaecbfea29f603abd2ce2224878 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1879943Reviewed-by:
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Simon Zünd authored
There already exists a optional boolean flag 'replMode' for the 'Runtime.evaluate' command. This CL ferries the flag from the inspector to DebugEvaluate::Global. The existing DebugEvaluate::GlobalREPL is removed in favor of a the REPLMOde enum to reduce code duplication. Bug: chromium:1018158 Change-Id: Iafb43a3015b6876a02ac0db6cdfcac2cfa388862 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1881149 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by:
Peter Marshall <petermarshall@chromium.org> Reviewed-by:
Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#64801}
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Michael Achenbach authored
The file contains testing features only used in d8. This CL prepares deprecation and moves the logic into d8.cc. Bug: v8:9941 Change-Id: I71de4cfd41d8f9fa209f936744cb170856365a6e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899774Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Reviewed-by:
Michael Starzinger <mstarzinger@chromium.org> Reviewed-by:
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Igor Sheludko authored
... in an uintptr friendly way. Drive-by-fix: 1) IsForceSlowPath() check is integrated into Cast<FastJSArray> 2) disable tests incompatible with --force-slow-path in "slow_path" variant Bug: v8:8906, v8:4153 Change-Id: I427f117073bc295120aa52fb3fe023ee04d58302 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899988 Commit-Queue: Igor Sheludko <ishell@chromium.org> Reviewed-by:
Toon Verwaest <verwaest@chromium.org> Cr-Commit-Position: refs/heads/master@{#64799}
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Dominik Inführ authored
CompactionSpace::SweepAndRetryAllocation was sweeping the space without clearing invalidated objects. CompactionSpace is only used during collections, mark-compact needs invalidated objects in swept memory to be removed. Bug: chromium:1020981 Change-Id: Ib5b0edcdd841257cf66af6de8b6a3bf785e5c813 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900452Reviewed-by:
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Zhao Jiazhong authored
port e554dec4 [Liftoff] https://crrev.com/c/1893343 Original Commit Message: These are two of the remaining missing instructions from the MVP. This CL adds support to {LiftoffCompiler} and provides assembly implementations for ia32, x64, arm, and arm64. Change-Id: I9ebe177c4a8861c31f78af89d893cf9f2128b45b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1898832Reviewed-by:
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Michael Starzinger authored
R=clemensb@chromium.org Change-Id: Idcbf3494849c1a359fab8ed72ad2a97626bf5212 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899781Reviewed-by:
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Mike Stanton authored
Currently, line number information is added to windows binaries as DWARF data. This prevents windows tools like DUMPBIN from working, as they don't expect to see DWARF segments. Any line number information should be in the CodeView (PDB) format. This work is deferred until later. Bug: v8:9944, v8:9910 Change-Id: I87c950d9aaa543c1eb3356310289e99266f1565e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900446Reviewed-by:
Michael Stanton <mvstanton@chromium.org> Reviewed-by:
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Victor Gomes authored
The bug is due to an unexpected opcode. To avoid similar issues in the future, we fallback to CheckContextExtensionSlowPath. This was the default behaviour before the CL (https://chromium-review.googlesource.com/c/v8/v8/+/1876051). Bug: chromium:1020983 Change-Id: Ia7f0f2986ec0008d1128ad3856efbb5d9e52dfc6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899989 Commit-Queue: Victor Gomes <victorgomes@chromium.org> Auto-Submit: Victor Gomes <victorgomes@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#64794}
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Simon Zünd authored
Design doc: bit.ly/v8-repl-mode This CL adds a new REPL mode that can be used via DebugEvaluate::GlobalREPL. REPL mode only implements re-declaration of 'let' bindings at the moment. Example: REPL Input 1: let x = 21; REPL Input 2: let x = 42; This would normally throw a SyntaxError, but works in REPL mode. The implementation is done by: - Setting a 'repl mode' bit on {Script}, {ScopeInfo}, {ParseInfo} and script {Scope}. - Each global let declaration still gets a slot reserved in the respective {ScriptContext}. - When a new REPL mode {ScriptContext} is created, name clashes for let bindings are not reported as errors. - Declarations, loads and stores for global let in REPL mode are now "load/store global" instead of accessing their respective context slot directly. This causes a lookup in the ScriptContextTable where the found slot for each name is guaranteed to be the same (the first one). Bug: chromium:1004193, chromium:1018158 Change-Id: Ia6ab526b9f696400dbb8bfb611a4d43606119a47 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1876061 Commit-Queue: Simon Zünd <szuend@chromium.org> Reviewed-by:Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
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Liviu Rau authored
This reverts commit 5a7c5879. Reason for revert: The build time improved since we compile only the d8 target now and removed the packaging step from the v8 recipe. Original change's description: > Revert "Activate is_offcial_build option for perf builders" > > This reverts commit b3c6e1ac. > > Reason for revert: The build time incresed significantly. We want to investigate if we can reduce it by removing the 'packaging' step. > > Original change's description: > > Activate is_offcial_build option for perf builders > > > > Bug: v8:9898 > > Change-Id: I41e1fcb37755906e29e6937b805cfb3018e90438 > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1888937 > > Reviewed-by: Michael Achenbach <machenbach@chromium.org> > > Commit-Queue: Liviu Rau <liviurau@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#64640} > > TBR=machenbach@chromium.org,tmrts@chromium.org,liviurau@chromium.org > > Change-Id: Ifbae1d7aedbfb7e4f7622c5a2bec74bc2f06e7f6 > No-Presubmit: true > No-Tree-Checks: true > No-Try: true > Bug: v8:9898 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1890092 > Reviewed-by: Michael Achenbach <machenbach@chromium.org> > Commit-Queue: Liviu Rau <liviurau@chromium.org> > Cr-Commit-Position: refs/heads/master@{#64645} TBR=machenbach@chromium.org,tmrts@chromium.org,liviurau@chromium.org # Not skipping CQ checks because original CL landed > 1 day ago. Bug: v8:9898 Change-Id: I02ec32d0832059a2d85199ef3a1940194f7d266a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900450 Commit-Queue: Liviu Rau <liviurau@chromium.org> Reviewed-by:
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Liviu Rau authored
NOTRY=true NOTREECHECKS=true NOPRESUBMIT=true Bug: v8:9925 Change-Id: Iad460c70937545dd5b982f63593e186de95d7df1 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899624Reviewed-by:
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v8-ci-autoroll-builder authored
Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/3a13923..7e1e30f Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/70d4ef3..1944f6e Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/f6a2232..2150a69 Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/35a0634..596e92a TBR=machenbach@chromium.org,tmrts@chromium.org Change-Id: I737a145eb557c9e8ec4ea87314e17d9d2252b8dd Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900708Reviewed-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@{#64790}
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- 05 Nov, 2019 23 commits
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Joshua Litt authored
This reverts commit 10883f56. Reason for revert: Causes bytecode mismatch Bug:chromium:1020538, chromium:1021457 Original change's description: > [hole-check-elimination] Simplest possible hole check elimination > > doc: https://docs.google.com/document/d/1Y9uF3hS2aUrwKU56vGxlvEs_IiGgmWSzau8097Y-XBM/edit > > Bug: v8:7427 > Change-Id: Iedd36c146cefff7e6687fdad48d263889c5c8347 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1778902 > Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Reviewed-by: Toon Verwaest <verwaest@chromium.org> > Cr-Commit-Position: refs/heads/master@{#63913} TBR=rmcilroy@chromium.org,leszeks@chromium.org,verwaest@chromium.org,joshualitt@chromium.org Bug: v8:7427 Change-Id: Ib4369a3560e929692585c4546435684deae5ee9b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899163 Commit-Queue: Joshua Litt <joshualitt@chromium.org> Reviewed-by:
Joshua Litt <joshualitt@chromium.org> Cr-Commit-Position: refs/heads/master@{#64789}
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Ng Zhi An authored
Bug: v8:9813 Change-Id: I716ed7c2802c38a4b4c8973db4e3bc50e16cec39 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1872930Reviewed-by:
Deepti Gandluri <gdeepti@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#64788}
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Ng Zhi An authored
Bug: v8:9728 Change-Id: I6d8f096adc42a6d417f876d5805302b3bea3308b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1867381Reviewed-by:
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Milad Farazmand authored
Port 42e8c231 Original Commit Message: Especially on ia32 and x64, shifts with immediate generate much shorter and more efficient code. R=clemensb@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: Iab474cdf6de91820e7f55ddd9a386efa03f03b6f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899423Reviewed-by:
Junliang Yan <jyan@ca.ibm.com> Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#64786}
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Joshua Litt authored
Implements TC39 String.prototype.replaceAll as a torque builtin per the https://github.com/tc39/proposal-string-replaceall proposal. Note: matchAll changes were already added to V8 in https://chromium-review.googlesource.com/c/v8/v8/+/1846067 Bug: v8:9801 Change-Id: Ib8158eb39c854202d04710d6f9c33dcdd93fad93 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1877054 Commit-Queue: Joshua Litt <joshualitt@chromium.org> Reviewed-by:
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Peter Kvitek authored
The new APIs are: enableRuntimeCallStats disableRuntimeCallStats getRuntimeCallStats The RunTime Call Stats are collected per isolate. Change-Id: I7e520e2c866288aa9f9dc74f12572abedf0d3ac8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1881601 Commit-Queue: Peter Kvitek <kvitekp@chromium.org> Reviewed-by:
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Benedikt Meurer authored
This removes the feature that we log precise information about functions and scripts in "v8.compile", since it comes at a significant cost and is not going to be used anytime soon. If we ever decide that we need this, we will have to come up with a cheaper way of doing this. Fixed: v8:9874 Tbr: yangguo@chromium.org Bug: v8:8598, v8:9039, v8:9325, v8:9874 Change-Id: I3481570b6fda2a050f05d2ae84cf3e9245f67d52 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1898652Reviewed-by:
Benedikt Meurer <bmeurer@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Reviewed-by:
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Lei Zhang authored
In backing-store.cc, define GetGuardedRegion(), which is only used on 64-bit, only when V8_TARGET_ARCH_64_BIT evals to true. Then add GetRegion(), which returns the appropriate region depending on whether guards are enabled or not, and use it to simplify the only caller to GetGuardedRegion(). Similarly, define |kFullGuardSize| as 64-bit only, and add GetReservationSize() to only access |kFullGuardSize| when appropriate on 64-bit platforms. Change-Id: Iefae7969a6138118d466a9d48e0ea62d94ff07f3 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899547 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by:
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Dominik Inführ authored
At the end of scavenge, the GC iterates all pages to search for empty buckets and free them. With this CL the scavenger marks buckets (and their corresponding pages) that were empty to reduce work. After finishing scavenging the GC only needs to revisit those marked buckets. Unlike (minor) mark-compact, the scavenger can't directly free those buckets, since the evacuation and pointer updating-phases are not separated. Right now the pages are processed sequentially but this could be parallelized in a subsequent CL. Change-Id: I47ed8c0e952b06c5d960e39a6f38e745d5618656 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1889884 Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Reviewed-by:
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Clemens Backes authored
Especially on ia32 and x64, shifts with immediate generate much shorter and more efficient code. R=jkummerow@chromium.org Bug: v8:9919 Change-Id: I33acf287d5eb6fc5c4d39a295f410557348a4f19 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899770Reviewed-by:
Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#64780}
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Clemens Backes authored
The {shrd} instruction was implemented with switched {src} and {dst} registers. The only users ({ShrPair} and {SarPair}) "fixed" this by passing switched registers again. This CL cleans this up, and adds some DCHECKs that are required for the logic in the pair-wise shifts to work correctly. Also, avoid an unneccessary shift by 0 on ia32. R=jkummerow@chromium.org Bug: v8:9919 Change-Id: I8ec31526f5adcea68f6f6ef7c8076ac2e5589a5f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899767Reviewed-by: -
Milad Farazmand authored
Port d710756a Original Commit Message: This is the last remaining missing instruction from the MVP. This CL adds support for ia32, x64, arm, and arm64. For CPUs which do not support the POPCNT instruction, there exists a fallback implementation in C. R=clemensb@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: I8965f4312c5e8ac6510c754772ba3d60394dfc4a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899908Reviewed-by:
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Milad Farazmand authored
Port 9c4ffc38 Original Commit Message: In fact, shifts are used most often with a fixed shift amount. This CL adds special handling for this in Liftoff, to generate shorter and faster code. R=clemensb@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: I20f8cfa6930bc20eb8db33a99bd07fce49f3f74d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899907Reviewed-by:
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Zhao Jiazhong authored
port 352bbb12 https://crrev.com/c/1893192 Original Commit Message: Reland "Reland: [builtins] Move non-JS linkage builtins code objects into RO_SPACE" This is a reland of 855591a5 Fixes break in builds that verify ReadOnlyHeap by relaxing the requirement for Code objects to be in CODE_SPACE in PagedSpaceObjectIterator::FromCurrentPage. Original change's description: > Reland: [builtins] Move non-JS linkage builtins code objects into RO_SPACE > > Reland of https://chromium-review.googlesource.com/c/v8/v8/+/1795358. > > [builtins] Move non-JS linkage builtins code objects into RO_SPACE > > Creates an allow-list of builtins that can still go in code_space > including all TFJ builtins and a small manual list that should be pared > down in the future. > > For builtins that go in RO_SPACE a Code object is created that contains an > immediate trap instruction. Generally these Code objects are still no > smaller than CODE_SPACE Code objects because of the Code object alignment > requirements. This will hopefully be addressed in a follow-up CL either by > relaxing them or removing the instruction stream completely. > > In the snapshot, this reduces code_space from ~152k to ~40k (-112k) and > increases by the same amount. > > Change-Id: I76661c35c7ea5866c1fb16e87e87122b3e3ca0ce > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1893336 > Commit-Queue: Dan Elphick <delphick@chromium.org> > Reviewed-by: Jakob Gruber <jgruber@chromium.org> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org> > Cr-Commit-Position: refs/heads/master@{#64700} Change-Id: I58c10e438f164a992041960f7a54d57be500ef48 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1898831 Auto-Submit: Zhao Jiazhong <kyslie3100@gmail.com> Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#64776}
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Milad Farazmand authored
Port e554dec4 Original Commit Message: These are two of the remaining missing instructions from the MVP. This CL adds support to {LiftoffCompiler} and provides assembly implementations for ia32, x64, arm, and arm64. R=clemensb@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: I00b9b7ef4c3b7e022e7cf57255a030949e7dca89 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899886Reviewed-by:
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Eric Leese authored
Currently there are two ways wasm locations are represented in the inspector. This remains unchanged for now. Also, currently there are multiple ways location is represented within V8, with the line number sometimes being a function index and sometimes being 0, and the column number being a byte offset which is sometimes function relative and sometimes module relative. With this change, the line number is never used within V8 (it is always 0), and the column number is always a byte offset from the beginning of the module. This simplifies translation logic and keeps it in one place, and will simplify future changes to wasm location representation in the inspector API. Bug: chromium:1013527 Change-Id: I8813d47c881988f9ab49d7529fb81fe10dbbccff Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1886915 Commit-Queue: Eric Leese <leese@chromium.org> Reviewed-by:
Simon Zünd <szuend@chromium.org> Reviewed-by:
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Santiago Aboy Solanes authored
Change-Id: Iafb5cc7f634f7c56f9dfc0d64032953773453436 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899614 Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Commit-Queue: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#64773}
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Michael Achenbach authored
The deopt-stress mode is unused. This prepares for deprecating corresponding api methods. The same kind of testing can be done by using --stress-opt and setting --deopt-every-n-times. Bug: v8:9941 Change-Id: I6796fcfa43d0efad51ec9d9a9adc949c26805a81 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899617Reviewed-by:
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Santiago Aboy Solanes authored
Bug: v8:9937 Change-Id: Ia0ad5def3cf8e5b9209b546e1d3fb9213bbfa810 Fixed: v8:9937 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1899622 Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org> Reviewed-by:
Dan Elphick <delphick@chromium.org> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org> Cr-Commit-Position: refs/heads/master@{#64771}
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Dan Elphick authored
Also tnodifies TransitionElementsKind, StoreMap and LoadStringLengthAsSmi in code-stub-assembler.cc. Bug: v8:9810, v8:6949 Change-Id: If7214f0a9645adc9d478fd4f7cb1257c0e01608c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1897888Reviewed-by:
Santiago Aboy Solanes <solanes@chromium.org> Commit-Queue: Dan Elphick <delphick@chromium.org> Cr-Commit-Position: refs/heads/master@{#64770}
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Georgia Kouveli authored
When running the tests with --turbo-stress-instruction-scheduling, there are crashes in the cases where there is no isolate, since we used the random generator from the isolate. This change introduces a RandomNumberGenerator to the instruction scheduler instead. We use the value from --random-seed for seeding the random number generator. We don't treat a zero value specially, as the feature is meant to be used with the test system which always sets a random seed and doesn't rely on default behaviour. This also means that the instruction scheduler will always produce the same result for the same input within the same run, which fixes another issue with the x64 jump optimisation: when that optimisation is enabled, the backend is ran twice, and previously it was producing a different schedule each time, thus collecting incorrect jump information. Bug: v8:9884 Change-Id: I00394a7e50d0c502254b18490ebaf28a38d8f819 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1895555Reviewed-by:
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Igor Sheludko authored
Bug: v8:8996 Change-Id: I822c945c56738a1bb0561c208e321d70fd96f863 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1895568Reviewed-by:
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Georgia Kouveli authored
Change-Id: Ie51d9d88fd1c13048557687fcf1a76435f776b9a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1856009Reviewed-by:
Igor Sheludko <ishell@chromium.org> Reviewed-by:
Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com> Cr-Commit-Position: refs/heads/master@{#64767}
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