From 50aa196a9d438f3fd469e8c5fd6988635d59f847 Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Wed, 27 Apr 2022 00:20:30 +0100
Subject: [PATCH]

---
 openpower/sv/biginteger/analysis.mdwn | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/openpower/sv/biginteger/analysis.mdwn b/openpower/sv/biginteger/analysis.mdwn
index 52833d4bf..28f535db4 100644
--- a/openpower/sv/biginteger/analysis.mdwn
+++ b/openpower/sv/biginteger/analysis.mdwn
@@ -125,6 +125,10 @@ one scalar register effectively as a full 64-bit carry/chain
 but in the case of shift, an OR may glue things together, easily,
 and in parallel.
 
+With Scalar shift and rotate operations in the Power ISA already being
+complex and very comprehensive, it is hard to justify creating complex
+3-in 2-out variants when a sequence of 3 simple instructions will suffice.
+
 # Vector Multiply
 
 Long-multiply, assuming an O(N^2) algorithm, is performed by summing
-- 
2.30.2