From a7f47f3c231f3f24f4023f36ebd76bfeff5feebf Mon Sep 17 00:00:00 2001
From: Andrew Waterman <waterman@cs.berkeley.edu>
Date: Wed, 7 Sep 2016 01:51:27 -0700
Subject: [PATCH] Reduce default BTB size

The old value 62 seems to have been a typo introduced over 2 years ago
in commit 63bd0b9d2ad91378b456d3dffe06ee806f43f2c4.  The intent was to
fit the dhrystone working set (rofl) which the new value of 40 does.
---
 src/main/scala/rocket/btb.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/rocket/btb.scala b/src/main/scala/rocket/btb.scala
index cdf7e877..2f305850 100644
--- a/src/main/scala/rocket/btb.scala
+++ b/src/main/scala/rocket/btb.scala
@@ -11,7 +11,7 @@ import uncore.util._
 case object BtbKey extends Field[BtbParameters]
 
 case class BtbParameters(
-  nEntries: Int = 62,
+  nEntries: Int = 40,
   nRAS: Int = 2,
   updatesOutOfOrder: Boolean = false)