diff options
Diffstat (limited to 'src/main/scala/firrtl/transforms/OptimizationAnnotations.scala')
| -rw-r--r-- | src/main/scala/firrtl/transforms/OptimizationAnnotations.scala | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/transforms/OptimizationAnnotations.scala b/src/main/scala/firrtl/transforms/OptimizationAnnotations.scala index 23723a60..2336710a 100644 --- a/src/main/scala/firrtl/transforms/OptimizationAnnotations.scala +++ b/src/main/scala/firrtl/transforms/OptimizationAnnotations.scala @@ -5,6 +5,17 @@ package transforms import firrtl.annotations._ import firrtl.passes.PassException +/** Indicate that DCE should not be run */ +object NoDCEAnnotation { + val marker = "noDCE!" + val transform = classOf[DeadCodeElimination] + def apply(): Annotation = Annotation(CircuitTopName, transform, marker) + def unapply(a: Annotation): Boolean = a match { + case Annotation(_, targetXform, value) if targetXform == transform && value == marker => true + case _ => false + } +} + /** A component that should be preserved * * DCE treats the component as a top-level sink of the circuit |