From 9516799355c0568409f8f01cfaf5a56a495d40fe Mon Sep 17 00:00:00 2001 From: Schuyler Eldridge Date: Wed, 22 Aug 2018 16:11:59 -0400 Subject: Make DeadCodeElimination a RegisteredTransform Signed-off-by: Schuyler Eldridge --- src/main/scala/firrtl/transforms/DeadCodeElimination.scala | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'src/main/scala') diff --git a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala index 523c997b..8f9fad46 100644 --- a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala +++ b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala @@ -11,6 +11,8 @@ import firrtl.Mappers._ import firrtl.WrappedExpression._ import firrtl.Utils.{throwInternalError, toWrappedExpression, kind} import firrtl.MemoizedHash._ +import firrtl.options.RegisteredTransform +import scopt.OptionParser import collection.mutable import java.io.{File, FileWriter} @@ -30,10 +32,16 @@ import java.io.{File, FileWriter} * circumstances of their instantiation in their parent module, they will still not be removed. To * remove such modules, use the [[NoDedupAnnotation]] to prevent deduplication. */ -class DeadCodeElimination extends Transform with ResolvedAnnotationPaths { +class DeadCodeElimination extends Transform with ResolvedAnnotationPaths with RegisteredTransform { def inputForm = LowForm def outputForm = LowForm + def addOptions(parser: OptionParser[AnnotationSeq]): Unit = parser + .opt[Unit]("no-dce") + .action( (x, c) => c :+ NoDCEAnnotation ) + .maxOccurs(1) + .text("Do NOT run dead code elimination") + /** Based on LogicNode ins CheckCombLoops, currently kind of faking it */ private type LogicNode = MemoizedHash[WrappedExpression] private object LogicNode { -- cgit v1.2.3