Wasmtime GitHub notifications bot (Aug 19 2026 at 18:09): Wasmtime GitHub notifications bot (Aug 19 2026 at 18:09):fitzgen opened PR #14162 from fitzgen:alias-analysis-and-endianness to bytecodealliance:main:
Do not forward the value from a store at memory location
Lto a load ofLwhen the store was big endian and the load is little endian, or vice versa. Similar for redundant-load elimination.Note that dead-store elimination overwrites the same range of bytes in memory regardless of byte order, so it can still happen when the dead store is big and the overwriter is little or vice versa, so long as we update the memory state to correctly record the overwriter's byte order.
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Wasmtime GitHub notifications bot (Aug 19 2026 at 18:09):fitzgen requested cfallin for a review on PR #14162.
Wasmtime GitHub notifications bot (Aug 19 2026 at 18:09):fitzgen requested wasmtime-compiler-reviewers for a review on PR #14162.
Wasmtime GitHub notifications bot (Aug 19 2026 at 18:47)::thumbs_up: cfallin submitted PR review:
Good catch -- thanks!
Wasmtime GitHub notifications bot (Aug 19 2026 at 18:47):cfallin added PR #14162 Alias analysis: do not eliminate loads with different byte orders to the merge queue.
Wasmtime GitHub notifications bot (Aug 19 2026 at 18:48):cfallin commented on PR #14162:
Backport note: perhaps we should get this into
release-48.0as well since it's a known bug in Cranelift (albeit theoretically unreachable from Wasmtime)?
Wasmtime GitHub notifications bot (Aug 19 2026 at 19:14)::check: cfallin merged PR #14162.
Wasmtime GitHub notifications bot (Aug 19 2026 at 19:14):cfallin removed PR #14162 Alias analysis: do not eliminate loads with different byte orders from the merge queue.
Last updated: Aug 30 2026 at 10:08 UTC