diff --git a/src/compiler/codegen/Optimizer.h b/src/compiler/codegen/Optimizer.h
index 23f0f17..c946e93 100644
--- a/src/compiler/codegen/Optimizer.h
+++ b/src/compiler/codegen/Optimizer.h
@@ -29,6 +29,7 @@
     kSuppressLoads,
     kNullCheckElimination,
     kPromoteRegs,
+    kTrackLiveTemps,
 };
 
 /* Forward declarations */