From: lkcl <lkcl@web>
Date: Sat, 2 Jul 2022 21:08:26 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~1407
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=06b6d9160c1a0fdd046de183831fe960ca0f7f63;p=libreriscv.git

---

diff --git a/openpower/sv/svp64_quirks.mdwn b/openpower/sv/svp64_quirks.mdwn
index 7dcc06c98..675646e3c 100644
--- a/openpower/sv/svp64_quirks.mdwn
+++ b/openpower/sv/svp64_quirks.mdwn
@@ -590,4 +590,11 @@ of pseudo-op opportunities such as `addi RT,RA,0` or `ori RT,RA,0`
 and many more.
 
 Strictly speaking these may orthogonally be Vectorised and achieve
-the same effect as a Vector Move.
+the same effect as a Vector Move.  However these instructions
+are marked as `RM-2P-1S1D` and have EXTRA3 Augmentation. In other
+words it is not possible to use them in Pack/Unpack Mode.
+There is however a trick: [[sv/mv.swizzle]] with a straight linear
+mapping (X to X, Y to Y...)
+By applying a straight linear swizzle map, the `RM-2P-1S1D-PU` mode
+of `sv.mv.swizzle`
+is available.