From a415ac89c48fcf59b1f691cc74cdee26a472256e Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Wed, 9 Dec 2020 00:32:05 +0000
Subject: [PATCH]

---
 openpower/sv/av_opcodes.mdwn | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/openpower/sv/av_opcodes.mdwn b/openpower/sv/av_opcodes.mdwn
index 454daa27a..089644a8f 100644
--- a/openpower/sv/av_opcodes.mdwn
+++ b/openpower/sv/av_opcodes.mdwn
@@ -10,7 +10,9 @@ The fundamental principle for these instructions is:
 
 * identify the scalar primitive
 * assume that longer runs of scalars will have Simple-V vectorisatin applied
-* assume that "swizzle" may be applied at the (vec2 - SUBVL=2) Vector level
+* assume that "swizzle" may be applied at the (vec2 - SUBVL=2) Vector level,
+  in order to perform the necessary HI/LO selection normally hard-coded
+  into SIMD ISAs.
 
 Thus for example, where OpenPOWER VSX has vpkswss, this would be achieved in SV with simply:
 
-- 
2.30.2