Explicitly add HLoadClass/HClinitCheck for HNewInstance.

bug:25735083
bug:25173758

Change-Id: Ie81cfa4fa9c47cc025edb291cdedd7af209a03db
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index 4088160..e114229 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -3765,18 +3765,14 @@
   LocationSummary* locations =
       new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall);
   InvokeRuntimeCallingConvention calling_convention;
-  locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
-  locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(1)));
+  locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
+  locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(1)));
   locations->SetOut(Location::RegisterLocation(RAX));
 }
 
 void InstructionCodeGeneratorX86_64::VisitNewInstance(HNewInstance* instruction) {
-  InvokeRuntimeCallingConvention calling_convention;
-  codegen_->Load64BitValue(CpuRegister(calling_convention.GetRegisterAt(0)),
-                           instruction->GetTypeIndex());
   // Note: if heap poisoning is enabled, the entry point takes cares
   // of poisoning the reference.
-
   codegen_->InvokeRuntime(instruction->GetEntrypoint(),
                           instruction,
                           instruction->GetDexPc(),