diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/main/scala/firrtl/transforms/Flatten.scala | 2 | ||||
| -rw-r--r-- | src/test/scala/firrtlTests/FlattenTests.scala | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/src/main/scala/firrtl/transforms/Flatten.scala b/src/main/scala/firrtl/transforms/Flatten.scala index 6654667a..a94f5d5a 100644 --- a/src/main/scala/firrtl/transforms/Flatten.scala +++ b/src/main/scala/firrtl/transforms/Flatten.scala @@ -104,7 +104,7 @@ class Flatten extends Transform { override def execute(state: CircuitState): CircuitState = { val annos = state.annotations.collect { case a @ FlattenAnnotation(_) => a } annos match { - case Nil => CircuitState(state.circuit, state.form) + case Nil => state case myAnnotations => val c = state.circuit val (modNames, instNames) = collectAnns(state.circuit, myAnnotations) diff --git a/src/test/scala/firrtlTests/FlattenTests.scala b/src/test/scala/firrtlTests/FlattenTests.scala index 77a221be..82c3ebdc 100644 --- a/src/test/scala/firrtlTests/FlattenTests.scala +++ b/src/test/scala/firrtlTests/FlattenTests.scala @@ -224,4 +224,14 @@ class FlattenTests extends LowTransformSpec { | b <= a""".stripMargin execute(input, check, Seq(flatten("Inline1"))) } + "The Flatten transform" should "do nothing if no flatten annotations are present" in{ + val input = + """|circuit Foo: + | module Foo: + | input a: UInt<1> + | output b: UInt<1> + | b <= a + |""".stripMargin + execute(input, input, Seq.empty) + } } |