From d861fdd95c5d81e01de2ff9ed07929633a82e785 Mon Sep 17 00:00:00 2001
From: John Wright <johnwright@eecs.berkeley.edu>
Date: Tue, 12 Feb 2019 10:55:34 -0800
Subject: [PATCH] Don't run DCE && Profit

---
 macros/src/main/scala/MacroCompiler.scala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/macros/src/main/scala/MacroCompiler.scala b/macros/src/main/scala/MacroCompiler.scala
index 9e0c72ed..256c55fe 100644
--- a/macros/src/main/scala/MacroCompiler.scala
+++ b/macros/src/main/scala/MacroCompiler.scala
@@ -13,6 +13,7 @@ import firrtl.ir._
 import firrtl.PrimOps
 import firrtl.Utils._
 import firrtl.annotations._
+import firrtl.transforms.{NoDCEAnnotation}
 import firrtl.CompilerUtils.getLoweringTransforms
 import mdf.macrolib.{PolarizedPort, PortPolarity}
 import scala.collection.mutable.{ArrayBuffer, HashMap}
@@ -764,7 +765,8 @@ object MacroCompiler extends App {
             )
           ))
         )
-        val state = CircuitState(circuit, HighForm, annotations)
+        // Append a NoDCEAnnotation to avoid dead code elimination removing the non-parent SRAMs
+        val state = CircuitState(circuit, HighForm, annotations :+ NoDCEAnnotation)
 
         // Run the compiler.
         val result = new MacroCompiler().compileAndEmit(state)