[PATCH] D93298: [RISCV] add the MC layer support of Zfinx extension

[Alex Bradbury via Phabricator via llvm-commits]

asb added a comment.

In D93298#2544459 <https://reviews.llvm.org/D93298#2544459>, @StephenFan wrote:

> According to  @jrtc27 's review that is 
> "As for Zfinx itself, well, the idea is fine, but I really detest the way it's being done as an extension to F/D/Zfh. Running F code on an FZfh core _does not work_ so it is not an _extension_. Instead it should really be a set of separate extensions to I/E that conflict with F/D/Zfh, i.e. Zfinx, Zdinx and Zfhinx, but apparently asking code that complies with a ratified standard to change itself in order to not break when a new extension is introduced is a-ok in the RISC-V world.". 
> We split the Zfinx into 3 separate extensions which is Zfinx, Zdinx, and Zfhinx.

Ah I see. I interpreted jrtc27's comment as a general gripe about the spec (which perhaps could be relayed to those working on the zfinx spec) rather as a direction for changing this patch in particular. Anyway, it's a detail that shouldn't affect an initial review. Thanks for clarifying.


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