From: Konstantinos Margaritis <konstantinos.margaritis@vectorcamp.gr>
Date: Mon, 1 May 2023 18:05:10 +0000 (+0000)
Subject: use a simpler way to do the same thing
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9f1e3c9945b8f62bb596fa9dfa13be4b9c20394f;p=openpower-isa.git

use a simpler way to do the same thing
---

diff --git a/openpower/isa/butterfly.mdwn b/openpower/isa/butterfly.mdwn
index 65f4dc56..43c5c48f 100644
--- a/openpower/isa/butterfly.mdwn
+++ b/openpower/isa/butterfly.mdwn
@@ -21,10 +21,8 @@ Pseudo-code:
         RT <- prod1_lo
         RS <- prod2_lo
     else
-        if n = 1 then
-            round <- [0]*(XLEN -n) || [1]*1
-        else
-            round <- [0]*(XLEN -n) || [1]*1 || [0]*(n-1)
+        round <- [0]*XLEN
+        round[XLEN -n] <- 1
         prod1_lo <- prod1_lo + round
         prod2_lo <- prod2_lo + round
         m <- MASK(n, (XLEN-1))