Wasmtime GitHub notifications bot (Aug 05 2021 at 09:27): Wasmtime GitHub notifications bot (Aug 05 2021 at 09:27):sparker-arm edited PR #3128 from aarch64-atomics to main.
Wasmtime GitHub notifications bot (Aug 05 2021 at 09:28):sparker-arm edited PR #3128 from aarch64-atomics to main:
The AArch64 support was a bit broken and was using Armv7 style
barriers, which aren't required with Armv8 acquire-release
load/stores. The backend now pattern matches uextend(atomic_load) too.The fallback CAS loops and RMW, for AArch64, have also been updated
to use acquire-release, exclusive, instructions which, again, remove
the need for barriers. The CAS loop has also been further optimised
by using the extending form of the cmp instruction.Copyright (c) 2021, Arm Limited.
<!--
Please ensure that the following steps are all taken care of before submitting
the PR.
[ ] This has been discussed in issue #..., or if not, please tell us why
here.[ ] A short description of what this does, why it is needed; if the
description becomes long, the matter should probably be discussed in an issue
first.[ ] This PR contains test cases, if meaningful.
- [ ] A reviewer from the core maintainer team has been assigned for this PR.
If you don't know who could review this, please indicate so. The list of
suggested reviewers on the right can help you.Please ensure all communication adheres to the code of conduct.
-->
Wasmtime GitHub notifications bot (Aug 06 2021 at 21:35):cfallin submitted PR review.
Wasmtime GitHub notifications bot (Aug 06 2021 at 21:38):cfallin merged PR #3128.
Last updated: Nov 22 2024 at 16:03 UTC