[PATCH] D136525: [M68k] Add codegen pattern for atomic load / store

[Min-Yih Hsu via Phabricator via llvm-commits]

myhsu added a comment.

Agree with @nikic . I think it will be better for this patch to have support for CmpXchg using CAS (for 68020 and later) and fallback to library solution for older CPUs. I don't think 68k have native RMW instruction tho so we probably need library lowering in that case as well.


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  https://reviews.llvm.org/D136525/new/

https://reviews.llvm.org/D136525