Explicitly add HLoadClass/HClinitCheck for HNewInstance.

bug:25735083
bug:25173758

Change-Id: Ie81cfa4fa9c47cc025edb291cdedd7af209a03db
diff --git a/compiler/optimizing/code_generator_mips.cc b/compiler/optimizing/code_generator_mips.cc
index 919ed2d..5282884 100644
--- a/compiler/optimizing/code_generator_mips.cc
+++ b/compiler/optimizing/code_generator_mips.cc
@@ -3478,17 +3478,12 @@
   LocationSummary* locations =
       new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall);
   InvokeRuntimeCallingConvention calling_convention;
-  locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
-  locations->AddTemp(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(calling_convention.GetReturnLocation(Primitive::kPrimNot));
 }
 
 void InstructionCodeGeneratorMIPS::VisitNewInstance(HNewInstance* instruction) {
-  InvokeRuntimeCallingConvention calling_convention;
-  Register current_method_register = calling_convention.GetRegisterAt(1);
-  __ Lw(current_method_register, SP, kCurrentMethodStackOffset);
-  // Move an uint16_t value to a register.
-  __ LoadConst32(calling_convention.GetRegisterAt(0), instruction->GetTypeIndex());
   codegen_->InvokeRuntime(
       GetThreadOffset<kMipsWordSize>(instruction->GetEntrypoint()).Int32Value(),
       instruction,