diff --git a/test/LLVMPasses/merge_func_opaque_pointers.ll b/test/LLVMPasses/merge_func_return_type_cast.ll
similarity index 87%
rename from test/LLVMPasses/merge_func_opaque_pointers.ll
rename to test/LLVMPasses/merge_func_return_type_cast.ll
index 7165fc5b32fad..afcca8cdfdd80 100644
--- a/test/LLVMPasses/merge_func_opaque_pointers.ll
+++ b/test/LLVMPasses/merge_func_return_type_cast.ll
@@ -1,4 +1,4 @@
-; RUN: %swift-llvm-opt -swift-merge-functions -swiftmergefunc-threshold=4 -opaque-pointers %s | %FileCheck %s
+; RUN: %swift-llvm-opt -passes='swift-merge-functions' -swiftmergefunc-threshold=4 %s | %FileCheck %s
 
 ; REQUIRES: PTRSIZE=64