craig.topper added a comment. In D141672#4100940 <https://reviews.llvm.org/D141672#4100940>, @reames wrote:
> This was brought up in today's RISCV sync call; I want to summarize the major > points of discussion. > > This patch is now behind the current most recent revision on the > vector-crypto spec. > (https://github.com/riscv/riscv-crypto/releases/download/v20230125/riscv-crypto-spec-vector.pdf) > The assumption is that the patch needs to be updated to match most recent. > If there's a reason why this assumption is wrong, please explicitly describe > the argument. > > There was confusion around the versioning scheme used in the vector-crypto > spec. It looks like newer version have moved to an internally consistent > (and less than 1.0) version scheme, so I think this item is resolved. > > There was a mention of another change being made to the spec in the near > future and a desire to wait until that had happened. This isn't required by > our experimental extension policy. However, in generally trying to minimize > churn by delaying a couple days is not unreasonable. I'd welcome comment > from someone following spec changes as to whether we should delay here or > not, and why. Here are some key points from today's crypto meeting that someone in attendance shared. - vghmac.vv - a new variant vghacm.vv will be added (xor then mul) - vandn operands will be reversed to match other insns in RISC-V - new constraint for vl and element group operations: if VLMAX < EGS (equivalently VLEN * LMUL < EGW): raise an illegal exception (on top of vl % EGS != 0) - Will define two meta extensions Zvkn and Zvks for the RVA23 profile - Zvkn = Zvkns + Zvknhb (AES, SHA-256, SHA-512) - Zvks = Zvksed + Zvksh (SM3, SM4) - Will ask to add Zvkg + Zvkb as optional for RVA23 profile Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D141672/new/ https://reviews.llvm.org/D141672 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
