Note: it's ok to pass predication through to ALU (like SIMD)
\item Standard (and future, and custom) opcodes now parallel\vspace{10pt}
\end{itemize}
- Notes:\vspace{6pt}
+ Note: EVERYTHING is parallelised:
\begin{itemize}
\item All LOAD/STORE (inc. Compressed, Int/FP versions)
\item All ALU ops (soft / hybrid / full HW, on per-op basis)
- \item All branches become predication targets (C.FNE added)
+ \item All branches become predication targets (C.FNE added?)
\item C.MV of particular interest (s/v, v/v, v/s)
+ \item FCVT, FMV, FSGNJ etc. very similar to C.MV
\end{itemize}
}
\frame{\frametitle{What's the deal / juice / score?}
\begin{itemize}
- \item Standard Register File(s) overloaded with CSR "vector span"\\
+ \item Standard Register File(s) overloaded with CSR "reg is vector"\\
(see pseudocode slides for examples)
- \item Element width and type concepts remain same as RVV\\
+ \item Element width (and type?) concepts remain same as RVV\\
(CSRs are used to "interpret" elements in registers)
\item CSRs are key-value tables (overlaps allowed)\vspace{10pt}
\end{itemize}
\item scalar-to-vector (w/ no pred): VSPLAT
\item scalar-to-vector (w/ dest-pred): Sparse VSPLAT
\item scalar-to-vector (w/ 1-bit dest-pred): VINSERT
- \item vector-to-scalar (w/ src-pred): VEXTRACT
+ \item vector-to-scalar (w/ [1-bit?] src-pred): VEXTRACT
\item vector-to-vector (w/ no pred): Vector Copy
\item vector-to-vector (w/ src pred): Vector Gather
\item vector-to-vector (w/ dest pred): Vector Scatter
\vspace{4pt}
Notes:
\begin{itemize}
- \item Really powerful!
- \item Any other options?
+ \item Surprisingly powerful!
+ \item Same arrangement for FVCT, FMV, FSGNJ etc.
\end{itemize}
}