efriedma added a comment. ldr+op+swp still isn't atomic. For each point in the code, please try the exercise of "what if my code is interrupted here"?
The only way to use swp to implement general atomic operations is to use a separate spinlock. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D116088/new/ https://reviews.llvm.org/D116088 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
