From b277ac791ad36f91aef1ada06f240c4bcb9b438b Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Tue, 24 May 2022 15:25:21 +0100
Subject: [PATCH]

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

diff --git a/openpower/sv/vector_ops.mdwn b/openpower/sv/vector_ops.mdwn
index d92de32fa..62e988cf5 100644
--- a/openpower/sv/vector_ops.mdwn
+++ b/openpower/sv/vector_ops.mdwn
@@ -65,6 +65,10 @@ result.
         or result, result, t1
         srr r3, r3, 1 # shift r3 predicate up by one
 
+To investigate:
+
+* <https://stackoverflow.com/questions/39266476/how-to-speed-up-this-histogram-of-lut-lookups>
+
 ## iota
 
 Based on RVV vmiota.  vmiota may be viewed as a cumulative variant of popcount, generating multiple results.  successive iterations include more and more bits of the bitstream being tested.
-- 
2.30.2