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-rw-r--r--src/main/scala/firrtl/LoweringCompilers.scala1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/LoweringCompilers.scala b/src/main/scala/firrtl/LoweringCompilers.scala
index 92f9a9a4..c22fe99f 100644
--- a/src/main/scala/firrtl/LoweringCompilers.scala
+++ b/src/main/scala/firrtl/LoweringCompilers.scala
@@ -108,6 +108,7 @@ class LowFirrtlOptimization extends CoreTransform {
passes.memlib.VerilogMemDelays, // TODO move to Verilog emitter
new firrtl.transforms.ConstantPropagation,
passes.SplitExpressions,
+ new firrtl.transforms.CombineCats,
passes.CommonSubexpressionElimination,
new firrtl.transforms.DeadCodeElimination)
}