================ @@ -1139,6 +1140,23 @@ supported for the ``amdgcn`` target. a buffer strided pointer, this means that the base pointer is ``align(4)``, that the offset is a multiple of 4 bytes, and that the stride is a multiple of 4. +**Barrier** + This address space represents barrier IDs (introduced in GFX12) as addresses. + It does not map directly to any addressable memory, thus pointers into this address space: + + * Never alias with any other pointers outside this address space. + * Cannot be dereferenced. + * Can only be consumed by intrinsics. + * Are always uniform. ---------------- nhaehnle wrote:
I don't think this is accurate. You can only use uniform pointers with the intrinsics, but that doesn't mean that every pointer value is inherently uniform. Somebody could have a divergent pointer value and wrap barrier intrinsics with a waterfall loop. Not that it makes a lot of sense to do so, but preventing it doesn't make a lot of sense either? So it'd be best to just delete this bullet point. https://github.com/llvm/llvm-project/pull/195613 _______________________________________________ llvm-branch-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
