gonzalobg wrote: > How should we handle integer vector atomicrmw in backends? Should we just let > it fail in backends? Conservatively, I updated the shouldExpandAtomicRMWInIR > default implementation to cmpxchg expand these.
If `elementwise` is not specified, and if the vector is smaller than the native size supported by the backend, and the backends don't override them, then AtomicExpand should just expand these with a cmpxchg loop. Otherwise, we don't have builtins for these, so the backend should just fail. If `elementwise` is specified, we can fragment the atomic into smaller atomics, like we do for FP vectors. https://github.com/llvm/llvm-project/pull/190716 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
