Files
Jakob Kummerow 630f172aad [wasm-custom-desc] Fix inlined casts to final described structs
In the TurboFan JS-to-Wasm body inliner, use GetExactness() instead of
checking is_final directly when lowering ref.cast, and handle
kExactMatchLastSupertype in WasmGCLowering by checking the immediate
supertype map on the object's map.

TAG=agy
CONV=8816d96b-54a2-48bb-a87b-40faa8800547

Fixed: 576632193
Change-Id: I9e96d4955a254ac64755ec5c2e3bfefe662e5920
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/8657182
Reviewed-by: Daniel Lehmann <dlehmann@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#111239}
2026-10-27 11:53:21 -07:00
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