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  1. 04 Feb, 2022 13 commits
  3. 03 Feb, 2022 22 commits
  5. 02 Feb, 2022 5 commits
    • Nikolaos Papaspyrou's avatar
      heap: Fix the tracing of GC cycles · 73a1c635
      Nikolaos Papaspyrou authored 
      Conceptually, a full GC cycle completes when the sweeping phase is
finished. As sweeping is performed concurrently, this happens after
Heap::CollectGarbage has returned and, at the latest, before the next
full GC cycle begins. However, an arbitrary number of young GC cycles
may happen in the meantime. Tracing information for the sweeping phase
must be added to the corresponding full GC cycle event. Until now, this
was not done correctly: this information was added to the GCTracer's
current event and could thus be attributed to a subsequent young or full
GC cycle.

This CL introduces methods GCTracer::(Start|Stop)Cycle to delimit a
cycle (still allowing for full GC cycles to be interrupted by young GC
cycles). These methods are different from (Start|Stop)ObservablePause,
which delimit the observable pause of each GC. The events of "pending"
full GC cycles are kept until they are properly amended and reported,
when the sweeping phase is finished.

This is a reland of 4ad20bff
which was reviewed here: https://crrev.com/3404733

Bug: v8:12503
Bug: chromium:1154636
Change-Id: Icc315b53cff1f3b19b8efe49db34340a5608bcd2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3432211Reviewed-by: 's avatarOmer Katz <omerkatz@chromium.org>
Reviewed-by: 's avatarMichael Lippautz <mlippautz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78911}
      73a1c635
    • Milad Fa's avatar
      S390 [liftoff]: Implement simd i32 to fp32 conversion · e2bdbffb
      Milad Fa authored 
      Change-Id: I251df1abd2f7facc1ee5adad7a7dbf70c1554d22
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3432985Reviewed-by: 's avatarJunliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78910}
      e2bdbffb
    • Gus Caplan's avatar
      fix overflow check in error formatting · cc9a8a37
      Gus Caplan authored 
      Bug: v8:12494
Change-Id: Iba2684173296aa236f1a1c73a5606c21472eff06
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3426634Reviewed-by: 's avatarJakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Gus Caplan <snek@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78909}
      cc9a8a37
    • Leszek Swirski's avatar
      Revert "heap: Fix the tracing of GC cycles" · 10e811c4
      Leszek Swirski authored 
      This reverts commit 4ad20bff.

Reason for revert: New test seems to be failing on TSAN/incremental marking stress (https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20stress-incremental-marking/6346/overview)

Original change's description:
> heap: Fix the tracing of GC cycles
>
> Conceptually, a full GC cycle completes when the sweeping phase is
> finished. As sweeping is performed concurrently, this happens after
> Heap::CollectGarbage has returned and, at the latest, before the next
> full GC cycle begins. However, an arbitrary number of young GC cycles
> may happen in the meantime. Tracing information for the sweeping phase
> must be added to the corresponding full GC cycle event. Until now, this
> was not done correctly: this information was added to the GCTracer's
> current event and could thus be attributed to a subsequent young or full
> GC cycle.
>
> This CL introduces methods GCTracer::(Start|Stop)Cycle to delimit a
> cycle (still allowing for full GC cycles to be interrupted by young GC
> cycles). These methods are different from (Start|Stop)ObservablePause,
> which delimit the observable pause of each GC. The events of "pending"
> full GC cycles are kept until they are properly amended and reported,
> when the sweeping phase is finished.
>
> Bug: chromium:1154636
> Change-Id: I2fbc65d4807c78656d4abc8c451043f6f86211b1
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3404733
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78905}

Bug: chromium:1154636
Change-Id: Id6688cfe982f9d8159c66d715b7079782a371bed
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3431489
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78908}
      10e811c4
    • Milad Fa's avatar
      S390 [liftoff]: Implement simd fp32 to i32 conversion · 7f47473a
      Milad Fa authored 
      I32x4UConvertF32x4 is also slightly optimized by removing 2
instructions.

Change-Id: Ie61fbd34628beb2410ae3ef916de7c3119c7ad9c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3429463Reviewed-by: 's avatarJunliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#78907}
      7f47473a