From dc3e209f89c409217aab6025b836bad12198c0fb Mon Sep 17 00:00:00 2001
From: Andrew Waterman
Date: Thu, 13 Aug 2015 14:59:43 -0700
Subject: Don't fold constants in the frontend

We need to make a similar change for extract, pending a FIRRTL bug fix.
---
 src/main/scala/Chisel/Core.scala | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/main/scala/Chisel/Core.scala b/src/main/scala/Chisel/Core.scala
index d257044b..4a0ee386 100644
--- a/src/main/scala/Chisel/Core.scala
+++ b/src/main/scala/Chisel/Core.scala
@@ -631,11 +631,7 @@ object Cat {
       val left = apply(r.slice(0, r.length/2))
       val right = apply(r.slice(r.length/2, r.length))
       val w = left.width + right.width
-
-      if (left.isLit && right.isLit)
-        UInt((left.litValue() << right.getWidth) | right.litValue(), w)
-      else
-        pushOp(DefPrim(UInt(NO_DIR, w), ConcatOp, left.ref, right.ref))
+      pushOp(DefPrim(UInt(NO_DIR, w), ConcatOp, left.ref, right.ref))
     }
   }
 }
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