diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index 1a0f0b7..55597ca 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -464,6 +464,9 @@
 
   bool shouldOptimizeMemIntrins();
 
+  void scalarizeArithmetic(InstArithmetic::OpKind K, Variable *Dest,
+                           Operand *Src0, Operand *Src1);
+
   /// SandboxType enumerates all possible sandboxing strategies that
   enum SandboxType {
     ST_None,