Wasmtime GitHub notifications bot (Apr 07 2026 at 17:36): Wasmtime GitHub notifications bot (Apr 07 2026 at 17:36):alexcrichton opened PR #12982 from alexcrichton:fix-aarch64-stack-abi to bytecodealliance:main:
This commit fixes an issue in the ABI layout calculated for the
apple_aarch64calling convention when stack-returns are present with sign extensions. In this situation the machinst code would load/store a full pointer-width but the aarch64 ABI calculation would only allocate a type's width for the slot. The fix in this PR is to skip the logic for "slot sized to the type" and instead use the minimum 8 bytes for extended arguments.<!--
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Wasmtime GitHub notifications bot (Apr 07 2026 at 17:36):alexcrichton requested fitzgen for a review on PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 17:36):alexcrichton requested wasmtime-compiler-reviewers for a review on PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 18:28):alexcrichton updated PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 19:31):fitzgen submitted PR review.
Wasmtime GitHub notifications bot (Apr 07 2026 at 19:31):fitzgen added PR #12982 aarch64: Fix ABI layout calculation for apple_aarch64 to the merge queue.
Wasmtime GitHub notifications bot (Apr 07 2026 at 20:02):github-merge-queue[bot] removed PR #12982 aarch64: Fix ABI layout calculation for apple_aarch64 from the merge queue.
Wasmtime GitHub notifications bot (Apr 07 2026 at 20:14):alexcrichton updated PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 20:14):alexcrichton has enabled auto merge for PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 20:37):alexcrichton added PR #12982 aarch64: Fix ABI layout calculation for apple_aarch64 to the merge queue.
Wasmtime GitHub notifications bot (Apr 07 2026 at 21:02):alexcrichton merged PR #12982.
Wasmtime GitHub notifications bot (Apr 07 2026 at 21:02):alexcrichton removed PR #12982 aarch64: Fix ABI layout calculation for apple_aarch64 from the merge queue.
Last updated: Apr 12 2026 at 23:10 UTC