diff --git a/compiler/optimizing/code_generator_x86.cc b/compiler/optimizing/code_generator_x86.cc
index 7b0a087..882541b 100644
--- a/compiler/optimizing/code_generator_x86.cc
+++ b/compiler/optimizing/code_generator_x86.cc
@@ -188,7 +188,7 @@
 }
 
 static constexpr Register kParameterCoreRegisters[] = { ECX, EDX, EBX };
-static constexpr int kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
+static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
 
 class InvokeStaticCallingConvention : public CallingConvention<Register> {
  public:
@@ -199,6 +199,20 @@
   DISALLOW_COPY_AND_ASSIGN(InvokeStaticCallingConvention);
 };
 
+static constexpr Register kRuntimeParameterCoreRegisters[] = { EAX, ECX, EDX };
+static constexpr size_t kRuntimeParameterCoreRegistersLength =
+    arraysize(kRuntimeParameterCoreRegisters);
+
+class InvokeRuntimeCallingConvention : public CallingConvention<Register> {
+ public:
+  InvokeRuntimeCallingConvention()
+      : CallingConvention(kRuntimeParameterCoreRegisters,
+                          kRuntimeParameterCoreRegistersLength) {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention);
+};
+
 void LocationsBuilderX86::VisitPushArgument(HPushArgument* argument) {
   LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(argument);
   InvokeStaticCallingConvention calling_convention;
@@ -284,5 +298,22 @@
   }
 }
 
+void LocationsBuilderX86::VisitNewInstance(HNewInstance* instruction) {
+  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction);
+  locations->SetOut(Location(EAX));
+  instruction->SetLocations(locations);
+}
+
+void InstructionCodeGeneratorX86::VisitNewInstance(HNewInstance* instruction) {
+  InvokeRuntimeCallingConvention calling_convention;
+  LoadCurrentMethod(calling_convention.GetRegisterAt(1));
+  __ movl(calling_convention.GetRegisterAt(0),
+          Immediate(instruction->GetTypeIndex()));
+
+  __ fs()->call(Address::Absolute(QUICK_ENTRYPOINT_OFFSET(kWordSize, pAllocObjectWithAccessCheck)));
+
+  codegen_->RecordPcInfo(instruction->GetDexPc());
+}
+
 }  // namespace x86
 }  // namespace art