[Libre-soc-isa] [Bug 937] instructions for bigint shift and prefix-code encode

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Fri Oct 28 12:01:58 BST 2022


--- Comment #24 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #23)
> for bigint shift, (as well as other useful stuff that needs dynamic
> shifting), we will want the equivalent of RVV's vslideup/vslidedown -- they
> shift a vector by a variable number of whole elements (dsld/dsrd handles
> shifts within elements).

svoffset. leave it in-place.  vslide* may be synthesised by applying
svoffset to a mv instruction.

alternatively using twin-predication the front (or back) of a predicate
can be set to zeros.

You are receiving this mail because:
You are on the CC list for the bug.

More information about the Libre-SOC-ISA mailing list