diff --git a/tools/gccas/gccas.cpp b/tools/gccas/gccas.cpp
index d4c63092620..c2f5a1838e2 100644
--- a/tools/gccas/gccas.cpp
+++ b/tools/gccas/gccas.cpp
@@ -88,6 +88,7 @@ int main(int argc, char **argv) {
     // opened up by them.
     Passes.add(createInstructionCombiningPass());
     Passes.add(createDeadCodeEliminationPass());    // Remove Dead code/vars
+    Passes.add(createAggressiveDCEPass());          // SSA based 'Agressive DCE'
     Passes.add(createCFGSimplificationPass());      // Merge & remove BBs
   }
   Passes.add(new WriteBytecodePass(&Out));        // Write bytecode to file...
@@ -96,4 +97,3 @@ int main(int argc, char **argv) {
   Passes.run(M.get());
   return 0;
 }
-