diff --git a/build/Android.oat.mk b/build/Android.oat.mk
index bded51b..34e8999 100644
--- a/build/Android.oat.mk
+++ b/build/Android.oat.mk
@@ -37,7 +37,8 @@
   core_pic_infix :=
 
   ifeq ($(1),optimizing)
-    core_compile_options += --compiler-backend=Optimizing
+    # TODO: Use optimizing once all backends can compile a boot image.
+    core_compile_options += --compiler-backend=Quick
     core_infix := -optimizing
   endif
   ifeq ($(1),interpreter)
diff --git a/compiler/optimizing/code_generator_arm64.cc b/compiler/optimizing/code_generator_arm64.cc
index fe999c2..5d504c6 100644
--- a/compiler/optimizing/code_generator_arm64.cc
+++ b/compiler/optimizing/code_generator_arm64.cc
@@ -538,7 +538,6 @@
   M(DoubleConstant)                                        \
   M(Div)                                                   \
   M(FloatConstant)                                         \
-  M(Mul)                                                   \
   M(LoadClass)                                             \
   M(Neg)                                                   \
   M(NewArray)                                              \
@@ -986,6 +985,44 @@
   // Will be generated at use site.
 }
 
+void LocationsBuilderARM64::VisitMul(HMul* mul) {
+  LocationSummary* locations =
+      new (GetGraph()->GetArena()) LocationSummary(mul, LocationSummary::kNoCall);
+  switch (mul->GetResultType()) {
+    case Primitive::kPrimInt:
+    case Primitive::kPrimLong:
+      locations->SetInAt(0, Location::RequiresRegister());
+      locations->SetInAt(1, Location::RequiresRegister());
+      locations->SetOut(Location::RequiresRegister());
+      break;
+
+    case Primitive::kPrimFloat:
+    case Primitive::kPrimDouble:
+      LOG(FATAL) << "Unimplemented mul type " << mul->GetResultType();
+      break;
+
+    default:
+      LOG(FATAL) << "Unexpected mul type " << mul->GetResultType();
+  }
+}
+
+void InstructionCodeGeneratorARM64::VisitMul(HMul* mul) {
+  switch (mul->GetResultType()) {
+    case Primitive::kPrimInt:
+    case Primitive::kPrimLong:
+      __ Mul(OutputRegister(mul), InputRegisterAt(mul, 0), InputRegisterAt(mul, 1));
+      break;
+
+    case Primitive::kPrimFloat:
+    case Primitive::kPrimDouble:
+      LOG(FATAL) << "Unimplemented mul type " << mul->GetResultType();
+      break;
+
+    default:
+      LOG(FATAL) << "Unexpected mul type " << mul->GetResultType();
+  }
+}
+
 void LocationsBuilderARM64::VisitNewInstance(HNewInstance* instruction) {
   LocationSummary* locations =
       new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall);
diff --git a/compiler/optimizing/codegen_test.cc b/compiler/optimizing/codegen_test.cc
index 03951e2..803a09b 100644
--- a/compiler/optimizing/codegen_test.cc
+++ b/compiler/optimizing/codegen_test.cc
@@ -408,11 +408,7 @@
 MUL_TEST(LONG, MulLong);
 #endif
 
-#if defined(__aarch64__)
-TEST(CodegenTest, DISABLED_ReturnMulIntLit8) {
-#else
 TEST(CodegenTest, ReturnMulIntLit8) {
-#endif
   const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
     Instruction::CONST_4 | 4 << 12 | 0 << 8,
     Instruction::MUL_INT_LIT8, 3 << 8 | 0,
@@ -421,11 +417,7 @@
   TestCode(data, true, 12);
 }
 
-#if defined(__aarch64__)
-TEST(CodegenTest, DISABLED_ReturnMulIntLit16) {
-#else
 TEST(CodegenTest, ReturnMulIntLit16) {
-#endif
   const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
     Instruction::CONST_4 | 4 << 12 | 0 << 8,
     Instruction::MUL_INT_LIT16, 3,