[wasm][shared] Handle shared Wasm objects in SharedValueBarrier [v8/v8 : main]

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Manos Koukoutos (Gerrit)

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Mar 10, 2026, 8:29:36 AMMar 10
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Manos Koukoutos added 1 comment

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File-level comment, Patchset 1 (Latest):
Manos Koukoutos . resolved

PTAL.

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Jakob Kummerow (Gerrit)

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Mar 10, 2026, 3:13:17 PMMar 10
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File src/codegen/code-stub-assembler.cc
Line 20199, Patchset 2 (Latest): GotoIf(InstanceTypeEqual(value_instance_type, WASM_ARRAY_TYPE),
Jakob Kummerow . unresolved

Let's do it right while we're at it, and use a single range-based check. See `IsJSFunctionInstanceType` for inspiration; we should have a similar `IsWasmObjectInstanceType` predicate.

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    Manos Koukoutos (Gerrit)

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    Mar 11, 2026, 2:08:39 AMMar 11
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    Manos Koukoutos added 1 comment

    File src/codegen/code-stub-assembler.cc
    Line 20199, Patchset 2: GotoIf(InstanceTypeEqual(value_instance_type, WASM_ARRAY_TYPE),
    Jakob Kummerow . resolved

    Let's do it right while we're at it, and use a single range-based check. See `IsJSFunctionInstanceType` for inspiration; we should have a similar `IsWasmObjectInstanceType` predicate.

    Manos Koukoutos

    Done

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      Jakob Kummerow (Gerrit)

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      Manos Koukoutos (Gerrit)

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      V8 LUCI CQ (Gerrit)

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      Mar 12, 2026, 7:43:24 AMMar 12
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      V8 LUCI CQ submitted the change

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      3 is the latest approved patch-set.
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      Change information

      Commit message:
      [wasm][shared] Handle shared Wasm objects in SharedValueBarrier
      Bug: 490877756, 42204563
      Change-Id: Ib7c5d5ac0d870b5753c7e0abfa25983378bd5b96
      Reviewed-by: Jakob Kummerow <jkum...@chromium.org>
      Commit-Queue: Manos Koukoutos <mano...@chromium.org>
      Cr-Commit-Position: refs/heads/main@{#105759}
      Files:
      • M src/codegen/code-stub-assembler.cc
      • A test/mjsunit/regress/wasm/regress-490877756.js
      Change size: S
      Delta: 2 files changed, 38 insertions(+), 0 deletions(-)
      Branch: refs/heads/main
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