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-rw-r--r--.github/workflows/test.yml5
-rw-r--r--build.sbt12
-rw-r--r--src/main/scala/firrtl/FileUtils.scala2
-rw-r--r--src/main/scala/firrtl/LexerHelper.scala4
-rw-r--r--src/main/scala/firrtl/LoweringCompilers.scala10
-rw-r--r--src/main/scala/firrtl/analyses/ConnectionGraph.scala2
-rw-r--r--src/main/scala/firrtl/analyses/InstanceGraph.scala2
-rw-r--r--src/main/scala/firrtl/analyses/InstanceKeyGraph.scala2
-rw-r--r--src/main/scala/firrtl/graph/DiGraph.scala10
-rw-r--r--src/main/scala/firrtl/ir/Serializer.scala2
-rw-r--r--src/main/scala/firrtl/options/DependencyManager.scala16
-rw-r--r--src/main/scala/firrtl/options/Stage.scala4
-rw-r--r--src/main/scala/firrtl/passes/wiring/WiringUtils.scala8
-rw-r--r--src/main/scala/firrtl/stage/FirrtlAnnotations.scala2
-rw-r--r--src/main/scala/firrtl/stage/phases/DriverCompatibility.scala8
-rw-r--r--src/main/scala/firrtl/transforms/ConstantPropagation.scala3
-rw-r--r--src/main/scala/firrtl/transforms/ManipulateNames.scala8
-rw-r--r--src/main/scala/logger/LoggerOptions.scala2
-rw-r--r--src/main/scala/tutorial/lesson1-circuit-traversal/AnalyzeCircuit.scala2
19 files changed, 55 insertions, 49 deletions
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 18a680f5..31f7ca6a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
runs-on: ubuntu-latest
strategy:
matrix:
- scala: [2.13.2, 2.12.12, 2.11.12]
+ scala: [2.13.4, 2.12.13, 2.11.12]
container:
image: ucbbar/chisel3-tools
options: --user github --entrypoint /bin/bash
@@ -34,8 +34,7 @@ jobs:
- name: Check Formatting (Scala 2.12 only)
if: matrix.scala == '2.12.12'
run: sbt ++${{ matrix.scala }} scalafmtCheckAll
- - name: Unidoc builds (Scala 2.12 only)
- if: matrix.scala == '2.12.12'
+ - name: Unidoc
run: sbt ++${{ matrix.scala }} unidoc
- name: Sanity check benchmarking scripts (Scala 2.12 only)
if: matrix.scala == '2.12.12'
diff --git a/build.sbt b/build.sbt
index e2c0b19e..76908bb7 100644
--- a/build.sbt
+++ b/build.sbt
@@ -16,13 +16,15 @@ def javacOptionsVersion(scalaVersion: String): Seq[String] = {
}
}
-
lazy val commonSettings = Seq(
organization := "edu.berkeley.cs",
+ scalaVersion := "2.12.13",
+ crossScalaVersions := Seq("2.13.4", "2.12.13", "2.11.12")
+)
+
+lazy val firrtlSettings = Seq(
name := "firrtl",
version := "1.5-SNAPSHOT",
- scalaVersion := "2.12.13",
- crossScalaVersions := Seq("2.13.4", "2.12.13", "2.11.12"),
addCompilerPlugin(scalafixSemanticdb),
scalacOptions := Seq(
"-deprecation",
@@ -170,6 +172,7 @@ lazy val firrtl = (project in file("."))
Test / testForkedParallel := true
)
.settings(commonSettings)
+ .settings(firrtlSettings)
.settings(protobufSettings)
.settings(antlrSettings)
.settings(assemblySettings)
@@ -187,6 +190,7 @@ lazy val firrtl = (project in file("."))
lazy val benchmark = (project in file("benchmark"))
.dependsOn(firrtl)
+ .settings(commonSettings)
.settings(
assemblyJarName in assembly := "firrtl-benchmark.jar",
test in assembly := {},
@@ -196,6 +200,7 @@ lazy val benchmark = (project in file("benchmark"))
val JQF_VERSION = "1.5"
lazy val jqf = (project in file("jqf"))
+ .settings(commonSettings)
.settings(
libraryDependencies ++= Seq(
"edu.berkeley.cs.jqf" % "jqf-fuzz" % JQF_VERSION,
@@ -221,6 +226,7 @@ lazy val testClassAndMethodParser = {
lazy val fuzzer = (project in file("fuzzer"))
.dependsOn(firrtl)
+ .settings(commonSettings)
.settings(
libraryDependencies ++= Seq(
"com.pholser" % "junit-quickcheck-core" % "0.8",
diff --git a/src/main/scala/firrtl/FileUtils.scala b/src/main/scala/firrtl/FileUtils.scala
index 2cc2961e..f92d50cc 100644
--- a/src/main/scala/firrtl/FileUtils.scala
+++ b/src/main/scala/firrtl/FileUtils.scala
@@ -71,7 +71,7 @@ object FileUtils {
val ioToDevNull = BasicIO(withIn = false, ProcessLogger(line => sb.append(line)))
try {
- cmd.run(ioToDevNull).exitValue == 0
+ cmd.run(ioToDevNull).exitValue() == 0
} catch {
case _: Throwable => false
}
diff --git a/src/main/scala/firrtl/LexerHelper.scala b/src/main/scala/firrtl/LexerHelper.scala
index e1327cd7..b755790a 100644
--- a/src/main/scala/firrtl/LexerHelper.scala
+++ b/src/main/scala/firrtl/LexerHelper.scala
@@ -98,7 +98,7 @@ abstract class LexerHelper {
if (tokenBuffer.isEmpty)
pullToken()
else
- tokenBuffer.dequeue
+ tokenBuffer.dequeue()
if (reachedEof)
t
@@ -157,6 +157,6 @@ abstract class LexerHelper {
doPop()
indentations.push(targetIndent)
- tokenBuffer.dequeue
+ tokenBuffer.dequeue()
}
}
diff --git a/src/main/scala/firrtl/LoweringCompilers.scala b/src/main/scala/firrtl/LoweringCompilers.scala
index e27cafb7..e0bde64f 100644
--- a/src/main/scala/firrtl/LoweringCompilers.scala
+++ b/src/main/scala/firrtl/LoweringCompilers.scala
@@ -123,7 +123,7 @@ class NoneCompiler extends Compiler {
)
class HighFirrtlCompiler extends Compiler {
val emitter = new HighFirrtlEmitter
- def transforms: Seq[Transform] = Forms.HighForm.map(_.getObject)
+ def transforms: Seq[Transform] = Forms.HighForm.map(_.getObject())
}
/** Emits middle Firrtl input circuit */
@@ -133,7 +133,7 @@ class HighFirrtlCompiler extends Compiler {
)
class MiddleFirrtlCompiler extends Compiler {
val emitter = new MiddleFirrtlEmitter
- def transforms: Seq[Transform] = Forms.MidForm.map(_.getObject)
+ def transforms: Seq[Transform] = Forms.MidForm.map(_.getObject())
}
/** Emits lowered input circuit */
@@ -143,7 +143,7 @@ class MiddleFirrtlCompiler extends Compiler {
)
class LowFirrtlCompiler extends Compiler {
val emitter = new LowFirrtlEmitter
- def transforms: Seq[Transform] = Forms.LowForm.map(_.getObject)
+ def transforms: Seq[Transform] = Forms.LowForm.map(_.getObject())
}
/** Emits Verilog */
@@ -153,7 +153,7 @@ class LowFirrtlCompiler extends Compiler {
)
class VerilogCompiler extends Compiler {
val emitter = new VerilogEmitter
- def transforms: Seq[Transform] = Forms.LowFormOptimized.map(_.getObject)
+ def transforms: Seq[Transform] = Forms.LowFormOptimized.map(_.getObject())
}
/** Emits Verilog without optimizations */
@@ -163,7 +163,7 @@ class VerilogCompiler extends Compiler {
)
class MinimumVerilogCompiler extends Compiler {
val emitter = new MinimumVerilogEmitter
- def transforms: Seq[Transform] = Forms.LowFormMinimumOptimized.map(_.getObject)
+ def transforms: Seq[Transform] = Forms.LowFormMinimumOptimized.map(_.getObject())
}
/** Currently just an alias for the [[VerilogCompiler]] */
diff --git a/src/main/scala/firrtl/analyses/ConnectionGraph.scala b/src/main/scala/firrtl/analyses/ConnectionGraph.scala
index 32bb1564..85cbe4df 100644
--- a/src/main/scala/firrtl/analyses/ConnectionGraph.scala
+++ b/src/main/scala/firrtl/analyses/ConnectionGraph.scala
@@ -147,7 +147,7 @@ class ConnectionGraph protected (val circuit: Circuit, val digraph: DiGraph[Refe
val bfsQueue = new mutable.PriorityQueue[ReferenceTarget]()(ordering)
bfsQueue.enqueue(root)
while (bfsQueue.nonEmpty) {
- val u = bfsQueue.dequeue
+ val u = bfsQueue.dequeue()
for (v <- getEdges(u)) {
if (!prev.contains(v) && !blacklist.contains(v)) {
prev(v) = u
diff --git a/src/main/scala/firrtl/analyses/InstanceGraph.scala b/src/main/scala/firrtl/analyses/InstanceGraph.scala
index 8858c4ea..83a04ca3 100644
--- a/src/main/scala/firrtl/analyses/InstanceGraph.scala
+++ b/src/main/scala/firrtl/analyses/InstanceGraph.scala
@@ -45,7 +45,7 @@ class InstanceGraph(c: Circuit) {
val topInstance = DefInstance(subTop, subTop)
instanceQueue.enqueue(topInstance)
while (instanceQueue.nonEmpty) {
- val current = instanceQueue.dequeue
+ val current = instanceQueue.dequeue()
instanceGraph.addVertex(current)
for (child <- childInstances(current.module)) {
if (!instanceGraph.contains(child)) {
diff --git a/src/main/scala/firrtl/analyses/InstanceKeyGraph.scala b/src/main/scala/firrtl/analyses/InstanceKeyGraph.scala
index 06c0b377..7584e3c8 100644
--- a/src/main/scala/firrtl/analyses/InstanceKeyGraph.scala
+++ b/src/main/scala/firrtl/analyses/InstanceKeyGraph.scala
@@ -158,7 +158,7 @@ object InstanceKeyGraph {
val instanceQueue = new mutable.Queue[InstanceKey]
instanceQueue.enqueue(topInstance)
while (instanceQueue.nonEmpty) {
- val current = instanceQueue.dequeue
+ val current = instanceQueue.dequeue()
instanceGraph.addVertex(current)
for (child <- childInstanceMap(current.module)) {
if (!instanceGraph.contains(child)) {
diff --git a/src/main/scala/firrtl/graph/DiGraph.scala b/src/main/scala/firrtl/graph/DiGraph.scala
index b99c6961..3a08d05e 100644
--- a/src/main/scala/firrtl/graph/DiGraph.scala
+++ b/src/main/scala/firrtl/graph/DiGraph.scala
@@ -153,7 +153,7 @@ class DiGraph[T](private[graph] val edges: LinkedHashMap[T, LinkedHashSet[T]]) {
val queue = new mutable.Queue[T]
queue.enqueue(root)
while (queue.nonEmpty) {
- val u = queue.dequeue
+ val u = queue.dequeue()
for (v <- getEdges(u)) {
if (!prev.contains(v) && !blacklist.contains(v)) {
prev(v) = u
@@ -257,7 +257,7 @@ class DiGraph[T](private[graph] val edges: LinkedHashMap[T, LinkedHashSet[T]]) {
}
frame.childCall = None
while (frame.edgeIter.hasNext && frame.childCall.isEmpty) {
- val w = frame.edgeIter.next
+ val w = frame.edgeIter.next()
if (!indices.contains(w)) {
frame.childCall = Some(w)
callStack.push(new StrongConnectFrame(w, getEdges(w).iterator))
@@ -269,13 +269,13 @@ class DiGraph[T](private[graph] val edges: LinkedHashMap[T, LinkedHashSet[T]]) {
if (lowlinks(v) == indices(v)) {
val scc = new mutable.ArrayBuffer[T]
do {
- val w = stack.pop
+ val w = stack.pop()
onstack -= w
scc += w
} while (scc.last != v);
sccs.append(scc.toSeq)
}
- callStack.pop
+ callStack.pop()
}
}
}
@@ -305,7 +305,7 @@ class DiGraph[T](private[graph] val edges: LinkedHashMap[T, LinkedHashSet[T]]) {
queue += start
queue ++= linearize.filter(reachable.contains(_))
while (!queue.isEmpty) {
- val current = queue.dequeue
+ val current = queue.dequeue()
for (v <- getEdges(current)) {
for (p <- paths(current)) {
addBinding(v, p :+ v)
diff --git a/src/main/scala/firrtl/ir/Serializer.scala b/src/main/scala/firrtl/ir/Serializer.scala
index 7fb30f19..983a7866 100644
--- a/src/main/scala/firrtl/ir/Serializer.scala
+++ b/src/main/scala/firrtl/ir/Serializer.scala
@@ -99,7 +99,7 @@ object Serializer {
case Block(stmts) =>
val it = stmts.iterator
while (it.hasNext) {
- s(it.next)
+ s(it.next())
if (it.hasNext) newLineAndIndent()
}
case Stop(info, ret, clk, en) =>
diff --git a/src/main/scala/firrtl/options/DependencyManager.scala b/src/main/scala/firrtl/options/DependencyManager.scala
index 39998ed7..5e911940 100644
--- a/src/main/scala/firrtl/options/DependencyManager.scala
+++ b/src/main/scala/firrtl/options/DependencyManager.scala
@@ -91,7 +91,7 @@ trait DependencyManager[A, B <: TransformLike[A] with DependencyAPI[B]] extends
}
while (queue.nonEmpty) {
- val u: Dependency[B] = queue.dequeue
+ val u: Dependency[B] = queue.dequeue()
for (v <- extractor(dependencyToObject(u))) {
if (!blacklist.contains(v) && !edges.contains(v)) {
queue.enqueue(v)
@@ -193,13 +193,13 @@ trait DependencyManager[A, B <: TransformLike[A] with DependencyAPI[B]] extends
)
}
- /** An ordering of [[firrtl.options.TransformLike TransformLike]]s that causes the requested [[DependencyManager.targets
- * targets]] to be executed starting from the [[DependencyManager.currentState currentState]]. This ordering respects
+ /** An ordering of [[firrtl.options.TransformLike TransformLike]]s that causes the requested [[firrtl.options.DependencyManager.targets
+ * targets]] to be executed starting from the [[firrtl.options.DependencyManager.currentState currentState]]. This ordering respects
* prerequisites, optionalPrerequisites, optionalPrerequisiteOf, and invalidates of all constituent
* [[firrtl.options.TransformLike TransformLike]]s. This uses an algorithm that attempts to reduce the number of
- * re-lowerings due to invalidations. Re-lowerings are implemented as new [[DependencyManager]]s.
- * @throws DependencyManagerException if a cycle exists in either the [[DependencyManager.dependencyGraph
- * dependencyGraph]] or the [[DependencyManager.invalidateGraph invalidateGraph]].
+ * re-lowerings due to invalidations. Re-lowerings are implemented as new [[firrtl.options.DependencyManager]]s.
+ * @throws firrtl.options.DependencyManagerException if a cycle exists in either the [[firrtl.options.DependencyManager.dependencyGraph
+ * dependencyGraph]] or the [[firrtl.options.DependencyManager.invalidateGraph invalidateGraph]].
*/
lazy val transformOrder: Seq[B] = {
@@ -244,8 +244,8 @@ trait DependencyManager[A, B <: TransformLike[A] with DependencyAPI[B]] extends
l ++ postprocessing
}
- /** A version of the [[DependencyManager.transformOrder transformOrder]] that flattens the transforms of any internal
- * [[DependencyManager]]s.
+ /** A version of the [[firrtl.options.DependencyManager.transformOrder transformOrder]] that flattens the transforms of any internal
+ * [[firrtl.options.DependencyManager DependencyManager]]s.
*/
lazy val flattenedTransformOrder: Seq[B] = transformOrder.flatMap {
case p: DependencyManager[A, B] => p.flattenedTransformOrder
diff --git a/src/main/scala/firrtl/options/Stage.scala b/src/main/scala/firrtl/options/Stage.scala
index 0783bfb5..cefdd957 100644
--- a/src/main/scala/firrtl/options/Stage.scala
+++ b/src/main/scala/firrtl/options/Stage.scala
@@ -28,7 +28,7 @@ abstract class Stage extends Phase {
/** Execute this stage on some input annotations. Annotations will be read from any input annotation files.
* @param annotations input annotations
* @return output annotations
- * @throws OptionsException if command line or annotation validation fails
+ * @throws firrtl.options.OptionsException if command line or annotation validation fails
*/
final def transform(annotations: AnnotationSeq): AnnotationSeq = {
val annotationsx =
@@ -52,7 +52,7 @@ abstract class Stage extends Phase {
* @param args command line arguments
* @param initialAnnotations annotation
* @return output annotations
- * @throws OptionsException if command line or annotation validation fails
+ * @throws firrtl.options.OptionsException if command line or annotation validation fails
*/
final def execute(args: Array[String], annotations: AnnotationSeq): AnnotationSeq =
transform(shell.parse(args, annotations))
diff --git a/src/main/scala/firrtl/passes/wiring/WiringUtils.scala b/src/main/scala/firrtl/passes/wiring/WiringUtils.scala
index cab6aa5f..6f9b4f83 100644
--- a/src/main/scala/firrtl/passes/wiring/WiringUtils.scala
+++ b/src/main/scala/firrtl/passes/wiring/WiringUtils.scala
@@ -150,11 +150,11 @@ object WiringUtils {
* sources/sinks not under sinks/sources.
*/
if (queue.size == 1) {
- val u = queue.dequeue
+ val u = queue.dequeue()
sinkInsts.foreach { v => owners(v) = Vector(u) }
} else {
while (queue.nonEmpty) {
- val u = queue.dequeue
+ val u = queue.dequeue()
visited(u) = true
val edges = (i.graph.getEdges(u.last).map(u :+ _).toVector :+ u.dropRight(1))
@@ -222,11 +222,11 @@ object WiringUtils {
* sources/sinks not under sinks/sources.
*/
if (queue.size == 1) {
- val u = queue.dequeue
+ val u = queue.dequeue()
sinkInsts.foreach { v => owners(v) = Vector(u) }
} else {
while (queue.nonEmpty) {
- val u = queue.dequeue
+ val u = queue.dequeue()
visited(u) = true
val edges = i.graph.getEdges(u.last).map(u :+ _).toVector :+ u.dropRight(1)
diff --git a/src/main/scala/firrtl/stage/FirrtlAnnotations.scala b/src/main/scala/firrtl/stage/FirrtlAnnotations.scala
index 2ac74de2..7d0d237a 100644
--- a/src/main/scala/firrtl/stage/FirrtlAnnotations.scala
+++ b/src/main/scala/firrtl/stage/FirrtlAnnotations.scala
@@ -180,7 +180,7 @@ case class RunFirrtlTransformAnnotation(transform: Transform) extends NoTargetAn
object RunFirrtlTransformAnnotation extends HasShellOptions {
def apply(transform: TransformDependency): RunFirrtlTransformAnnotation =
- RunFirrtlTransformAnnotation(transform.getObject)
+ RunFirrtlTransformAnnotation(transform.getObject())
private[firrtl] def stringToEmitter(a: String): RunFirrtlTransformAnnotation = {
val emitter = a match {
diff --git a/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala b/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
index a37774e5..7ad77212 100644
--- a/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
+++ b/src/main/scala/firrtl/stage/phases/DriverCompatibility.scala
@@ -58,8 +58,8 @@ object DriverCompatibility {
def addOptions(p: OptionParser[AnnotationSeq]): Unit = p
.opt[Unit]("top-name")
.abbr("tn")
- .hidden
- .unbounded
+ .hidden()
+ .unbounded()
.action((_, _) => throw new OptionsException(optionRemoved("--top-name/-tn")))
}
@@ -71,8 +71,8 @@ object DriverCompatibility {
def addOptions(p: OptionParser[AnnotationSeq]): Unit = p
.opt[Unit]("split-modules")
.abbr("fsm")
- .hidden
- .unbounded
+ .hidden()
+ .unbounded()
.action((_, _) => throw new OptionsException(optionRemoved("--split-modules/-fsm")))
}
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)
diff --git a/src/main/scala/firrtl/transforms/ManipulateNames.scala b/src/main/scala/firrtl/transforms/ManipulateNames.scala
index 7be876ef..4a796e58 100644
--- a/src/main/scala/firrtl/transforms/ManipulateNames.scala
+++ b/src/main/scala/firrtl/transforms/ManipulateNames.scala
@@ -464,7 +464,7 @@ abstract class ManipulateNames[A <: ManipulateNames[_]: ClassTag] extends Transf
val block = state.annotations.collect {
case ManipulateNamesBlocklistAnnotation(targetSeq, t) =>
- t.getObject match {
+ t.getObject() match {
case _: A => targetSeq
case _ => Nil
}
@@ -473,7 +473,7 @@ abstract class ManipulateNames[A <: ManipulateNames[_]: ClassTag] extends Transf
val allow = {
val allowx = state.annotations.collect {
case ManipulateNamesAllowlistAnnotation(targetSeq, t) =>
- t.getObject match {
+ t.getObject() match {
case _: A => targetSeq
case _ => Nil
}
@@ -491,13 +491,13 @@ abstract class ManipulateNames[A <: ManipulateNames[_]: ClassTag] extends Transf
val annotationsx = state.annotations.flatMap {
/* Consume blocklist annotations */
case foo @ ManipulateNamesBlocklistAnnotation(_, t) =>
- t.getObject match {
+ t.getObject() match {
case _: A => None
case _ => Some(foo)
}
/* Convert allowlist annotations to result annotations */
case foo @ ManipulateNamesAllowlistAnnotation(a, t) =>
- t.getObject match {
+ t.getObject() match {
case _: A =>
(a, a.map(_.map(renames(_)).flatten)) match {
case (a, b) => Some(ManipulateNamesAllowlistResultAnnotation(b, t, a))
diff --git a/src/main/scala/logger/LoggerOptions.scala b/src/main/scala/logger/LoggerOptions.scala
index 683d6741..bfd072df 100644
--- a/src/main/scala/logger/LoggerOptions.scala
+++ b/src/main/scala/logger/LoggerOptions.scala
@@ -32,7 +32,7 @@ class LoggerOptions private[logger] (
}
/** Return the name of the log file, defaults to `a.log` if unspecified */
- def getLogFileName(): Option[String] = if (!logToFile) None else logFileName.orElse(Some("a.log"))
+ def getLogFileName(): Option[String] = if (!logToFile()) None else logFileName.orElse(Some("a.log"))
/** True if a [[Logger]] should be writing to a file */
@deprecated("logToFile was removed, use logFileName.nonEmpty", "FIRRTL 1.2")
diff --git a/src/main/scala/tutorial/lesson1-circuit-traversal/AnalyzeCircuit.scala b/src/main/scala/tutorial/lesson1-circuit-traversal/AnalyzeCircuit.scala
index 23ecb114..bab67a74 100644
--- a/src/main/scala/tutorial/lesson1-circuit-traversal/AnalyzeCircuit.scala
+++ b/src/main/scala/tutorial/lesson1-circuit-traversal/AnalyzeCircuit.scala
@@ -142,7 +142,7 @@ class AnalyzeCircuit extends Transform {
visited match {
// If e is a [[firrtl.ir.Mux Mux]], increment our ledger and return e.
case Mux(cond, tval, fval, tpe) =>
- ledger.foundMux
+ ledger.foundMux()
e
// If e is not a [[firrtl.ir.Mux Mux]], return e.
case notmux => notmux