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diff --git a/openpower/sv/biginteger/analysis.mdwn b/openpower/sv/biginteger/analysis.mdwn
index 52833d4bffbe75ff72da5c3f96c3515245d6dd93..28f535db4524689ac060d77d592454577c7fa54b 100644 (file)
--- 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