diff --git a/transform/optimizer.go b/transform/optimizer.go
index 051f929c..cf570a2d 100644
--- a/transform/optimizer.go
+++ b/transform/optimizer.go
@@ -56,7 +56,7 @@ func Optimize(mod llvm.Module, config *compileopts.Config, optLevel, sizeLevel i
 		defer goPasses.Dispose()
 		goPasses.AddGlobalDCEPass()
 		goPasses.AddGlobalOptimizerPass()
-		goPasses.AddConstantPropagationPass()
+		goPasses.AddIPSCCPPass()
 		goPasses.AddAggressiveDCEPass()
 		goPasses.AddFunctionAttrsPass()
 		goPasses.Run(mod)