From: lkcl Date: Sat, 30 Apr 2022 20:14:54 +0000 (+0100) Subject: (no commit message) X-Git-Tag: opf_rfc_ls005_v1~2527 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e0449c9bfb7e659a503965a406c5b2ecda9198ba;p=libreriscv.git --- diff --git a/openpower/sv/svp64/appendix.mdwn b/openpower/sv/svp64/appendix.mdwn index 1a8bdc840..5bccb480e 100644 --- a/openpower/sv/svp64/appendix.mdwn +++ b/openpower/sv/svp64/appendix.mdwn @@ -70,8 +70,8 @@ CPU ISA. Vectorisation of the VSX Packed SIMD system makes no sense whatsoever, the sole exceptions potentially being any operations with 128-bit -operands. -SV effectively *replaces* VSX and provides, +operands such as `vrlq` (Rotate Quad Word). +SV effectively *replaces* VSX requiring far less instructions, and provides, at the very minimum, predication (which VSX was designed without). Thus all VSX Major Opcodes - all of them - are "unused" and must raise illegal instruction exceptions in SV Prefix Mode.