diff --git a/clang/test/CodeGen/arm_neon_intrinsics.c b/clang/test/CodeGen/arm_neon_intrinsics.c
index a8b03b5d9b0b..15bf61a12c4d 100644
--- a/clang/test/CodeGen/arm_neon_intrinsics.c
+++ b/clang/test/CodeGen/arm_neon_intrinsics.c
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 -triple thumbv7s-apple-darwin -target-abi apcs-gnu\
-// RUN:  -target-cpu swift -fallow-half-arguments-and-returns -ffreestanding -emit-llvm -o - %s \
+// RUN:  -target-cpu swift -fallow-half-arguments-and-returns -ffreestanding \
+// RUN:  -disable-O0-optnone -emit-llvm -o - %s \
 // RUN:  | opt -S -mem2reg | FileCheck %s
 
 // REQUIRES: long-tests