Add option to disable combinational loop detection

Resolves #600

1 files changed, 3 insertions, 2 deletions

diff --git a/src/main/scala/firrtl/Driver.scala b/src/main/scala/firrtl/Driver.scala
index 5e3d046a..6c4c450b 100644
--- a/src/main/scala/firrtl/Driver.scala
+++ b/src/main/scala/firrtl/Driver.scala
@@ -12,7 +12,7 @@ import logger.Logger
 import Parser.{IgnoreInfo, InfoMode}
 import annotations._
 import firrtl.annotations.AnnotationYamlProtocol._
-import firrtl.transforms.{BlackBoxSourceHelper, BlackBoxTargetDir}
+import firrtl.transforms.{BlackBoxSourceHelper, BlackBoxTargetDir, DontCheckCombLoopsAnnotation}
 import Utils.throwInternalError
 
 
@@ -166,7 +166,8 @@ object Driver {
       val outputAnnos = firrtlConfig.getEmitterAnnos(optionsManager)
 
     // Should these and outputAnnos be moved to loadAnnotations?
-    val globalAnnos = Seq(TargetDirAnnotation(optionsManager.targetDirName))
+    val globalAnnos = Seq(TargetDirAnnotation(optionsManager.targetDirName)) ++
+      (if (firrtlConfig.dontCheckCombLoops) Seq(DontCheckCombLoopsAnnotation()) else Seq())
 
     val finalState = firrtlConfig.compiler.compile(
       CircuitState(parsedInput,