diff --git a/src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp b/src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp
index e3cd686..fa7dbbc 100644
--- a/src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp
+++ b/src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp
@@ -121,6 +121,8 @@ void G1BarrierSetAssembler::gen_write_ref_array_post_barrier(MacroAssembler* mas
 #endif // !AARCH64
 }
 
+#ifdef COMPILER1
+
 #undef __
 #define __ ce->masm()->
 
@@ -354,3 +356,5 @@ void G1BarrierSetAssembler::generate_c1_post_barrier_runtime_stub(StubAssembler*
 }
 
 #undef __
+
+#endif // COMPILER1