[PATCH] D95588: [RISCV] Implement the MC layer support of P extension

[Shao-Ce SUN via Phabricator via cfe-commits]

sunshaoce added a comment.

In D95588#3641900 <https://reviews.llvm.org/D95588#3641900>, @Jim wrote:

> In D95588#3622052 <https://reviews.llvm.org/D95588#3622052>, @sunshaoce wrote:
>
>> Hello @Jim! We are developing the P extension, are you still maintaining this patch? Or would you mind co-development together?
>
> Yes, I am still on developing the P extension. But it seems spec has the issue https://github.com/riscv/riscv-p-spec/issues/137 need to clarify.
> And some instruction (CLZ, FSR and FSRI) in Zbpbo only be aliased to B extension on RV32. It is complicated if P extension are enabled on RV64.

Yes, this problem does exist. Thanks for your reply, looking forward to more cooperation!


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  https://reviews.llvm.org/D95588/new/

https://reviews.llvm.org/D95588