From 2b829bd613fb4401add425286d85836990a86885 Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Mon, 3 Oct 2022 12:52:32 +0100
Subject: [PATCH]

---
 openpower/sv/svp64/discussion.mdwn | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/openpower/sv/svp64/discussion.mdwn b/openpower/sv/svp64/discussion.mdwn
index e86bc5b12..8358e701f 100644
--- a/openpower/sv/svp64/discussion.mdwn
+++ b/openpower/sv/svp64/discussion.mdwn
@@ -239,6 +239,24 @@ saturation mode is fine
 
 predicate-result should be fine as well (aside from change in predicate behaviour)
 
+**LD/ST Immediate**
+
+[[sv/ldst]]
+
+First critical observation, RA.isvec is utilised to detect element-stride.
+
+```
+if RA.isvec:
+    svctx.ldstmode = indexed
+elif els == 0:
+    svctx.ldstmode = unitstride
+elif immediate != 0:
+    svctx.ldstmode = elementstride
+```
+
+thus it is actually legitimate to have scalar src *and* dest especially
+with predicate masks.
+
 ## answers to 4, loops/uses
 
 **REMAP**
-- 
2.30.2