[Libre-soc-dev] [RFC] SVP64 Data-dependent fail-first on CR operations (crand, cror, etc)

[lkcl]

On August 28, 2021 4:36:02 PM UTC, lkcl <luke.leighton at gmail.com> wrote:
>https://libre-soc.org/openpower/sv/svp64/appendix/

>other operations which *actually* operate on entire (complete) CR
>Fields are usually only 3 bits for specifying the CR Field.  these
>*would* need the index mode.

question:

is it worthwhile to use the elwidth bits of the 24-bit RM, which are meaningless for at least the result if the result is a 4 bit CR Field, to provide additional fields?

this is already done for SV Branches, the VLi field is for example in elwidth bit zero in SV Branch RM.

l.