diff --git a/compiler/optimizing/code_generator_arm64.cc b/compiler/optimizing/code_generator_arm64.cc
index ec9af73..6ac7a31 100644
--- a/compiler/optimizing/code_generator_arm64.cc
+++ b/compiler/optimizing/code_generator_arm64.cc
@@ -556,6 +556,7 @@
 
 #define DEFINE_UNIMPLEMENTED_INSTRUCTION_VISITORS(name)                               \
   void InstructionCodeGeneratorARM64::Visit##name(H##name* instr) {                   \
+    UNUSED(instr);                                                                    \
     __ Brk(UNIMPLEMENTED_INSTRUCTION_BREAK_CODE(name));                               \
   }                                                                                   \
   void LocationsBuilderARM64::Visit##name(H##name* instr) {                           \
@@ -711,6 +712,7 @@
 }
 
 void InstructionCodeGeneratorARM64::VisitExit(HExit* exit) {
+  UNUSED(exit);
   if (kIsDebugBuild) {
     down_cast<Arm64Assembler*>(GetAssembler())->Comment("Unreachable");
     __ Brk(0);    // TODO: Introduce special markers for such code locations.
@@ -877,6 +879,7 @@
 
 void InstructionCodeGeneratorARM64::VisitIntConstant(HIntConstant* constant) {
   // Will be generated at use site.
+  UNUSED(constant);
 }
 
 void LocationsBuilderARM64::VisitInvokeStatic(HInvokeStatic* invoke) {
@@ -967,6 +970,7 @@
 
 void InstructionCodeGeneratorARM64::VisitLoadLocal(HLoadLocal* load) {
   // Nothing to do, this is driven by the code generator.
+  UNUSED(load);
 }
 
 void LocationsBuilderARM64::VisitLocal(HLocal* local) {
@@ -984,6 +988,7 @@
 
 void InstructionCodeGeneratorARM64::VisitLongConstant(HLongConstant* constant) {
   // Will be generated at use site.
+  UNUSED(constant);
 }
 
 void LocationsBuilderARM64::VisitMul(HMul* mul) {
@@ -1109,6 +1114,7 @@
 
 void InstructionCodeGeneratorARM64::VisitParameterValue(HParameterValue* instruction) {
   // Nothing to do, the parameter is already at its location.
+  UNUSED(instruction);
 }
 
 void LocationsBuilderARM64::VisitPhi(HPhi* instruction) {
@@ -1120,6 +1126,7 @@
 }
 
 void InstructionCodeGeneratorARM64::VisitPhi(HPhi* instruction) {
+  UNUSED(instruction);
   LOG(FATAL) << "Unreachable";
 }
 
@@ -1164,6 +1171,7 @@
 }
 
 void InstructionCodeGeneratorARM64::VisitReturnVoid(HReturnVoid* instruction) {
+  UNUSED(instruction);
   codegen_->GenerateFrameExit();
   __ Br(lr);
 }
@@ -1191,6 +1199,7 @@
 }
 
 void InstructionCodeGeneratorARM64::VisitStoreLocal(HStoreLocal* store) {
+  UNUSED(store);
 }
 
 void LocationsBuilderARM64::VisitSub(HSub* instruction) {
@@ -1242,6 +1251,7 @@
 
 void InstructionCodeGeneratorARM64::VisitTemporary(HTemporary* temp) {
   // Nothing to do, this is driven by the code generator.
+  UNUSED(temp);
 }
 
 }  // namespace arm64