diff --git a/src/compiler/codegen/Ralloc.h b/src/compiler/codegen/Ralloc.h
index 0c3fbca..e2cb1ce 100644
--- a/src/compiler/codegen/Ralloc.h
+++ b/src/compiler/codegen/Ralloc.h
@@ -141,6 +141,8 @@
 
 extern RegisterInfo *oatIsTemp(CompilationUnit* cUnit, int reg);
 
+extern RegisterInfo *oatIsPromoted(CompilationUnit* cUnit, int reg);
+
 extern bool oatIsDirty(CompilationUnit* cUnit, int reg);
 
 extern void oatMarkInUse(CompilationUnit* cUnit, int reg);