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-rw-r--r--src/main/scala/firrtl/transforms/ConstantPropagation.scala3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/main/scala/firrtl/transforms/ConstantPropagation.scala b/src/main/scala/firrtl/transforms/ConstantPropagation.scala
index c89fcff1..e4115441 100644
--- a/src/main/scala/firrtl/transforms/ConstantPropagation.scala
+++ b/src/main/scala/firrtl/transforms/ConstantPropagation.scala
@@ -647,7 +647,8 @@ class ConstantPropagation extends Transform with DependencyAPIMigration {
case WRef(rname, _, kind, _) if betterName(lname, rname) && !swapMap.contains(rname) && kind != PortKind =>
assert(!swapMap.contains(lname)) // <- Shouldn't be possible because lname is either a
// node declaration or the single connection to a wire or register
- swapMap += (lname -> rname, rname -> lname)
+ swapMap += lname -> rname
+ swapMap += rname -> lname
case _ =>
}
nodeMap(lname) = InfoExpr.wrap(info, value)