From 0719146300e6100a6e403541402391642bf90753 Mon Sep 17 00:00:00 2001
From: Andrew Waterman
Date: Tue, 4 Aug 2015 04:40:04 -0700
Subject: Fix inferred width of Reverse

---
 src/main/scala/Chisel/utils.scala | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/main/scala/Chisel/utils.scala b/src/main/scala/Chisel/utils.scala
index 830687b8..fe8329a7 100644
--- a/src/main/scala/Chisel/utils.scala
+++ b/src/main/scala/Chisel/utils.scala
@@ -218,13 +218,13 @@ object Reverse
     if (length == 1) {
       in
     } else if (isPow2(length) && length >= 8 && length <= 64) {
-      // Do it in logarithmic time to speed up C++.  Neutral for real HW.
+      // This esoterica improves simulation performance
       var res = in
       var shift = length >> 1
       var mask = UInt((BigInt(1) << length) - 1, length)
       do {
-        mask = mask ^ (mask(length-shift-1,0) << UInt(shift))
-        res = ((res >> UInt(shift)) & mask) | (res(length-shift-1,0) << UInt(shift) & ~mask)
+        mask = mask ^ (mask(length-shift-1,0) << shift)
+        res = ((res >> shift) & mask) | ((res(length-shift-1,0) << shift) & ~mask)
         shift = shift >> 1
       } while (shift > 0)
       res
-- 
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