diff --git a/include/llvm/Support/StandardPasses.h b/include/llvm/Support/StandardPasses.h
index ff0a6d69917..ffa93149af8 100644
--- a/include/llvm/Support/StandardPasses.h
+++ b/include/llvm/Support/StandardPasses.h
@@ -100,6 +100,7 @@ namespace llvm {
     if (UnitAtATime) {
       PM->add(createGlobalOptimizerPass());     // Optimize out global vars
       
+      PM->add(createIPConstantPropagationPass());              // IP CP
       PM->add(createIPSCCPPass());              // IP SCCP
       PM->add(createDeadArgEliminationPass());  // Dead argument elimination
     }