Revert "Revert "Load the array class in the compiler for allocations.""

This reverts commit fee255039e30c1c3dfc70c426c3d176221c3cdf9.

Change-Id: I02b45f9a659d872feeb35df40b42c1be9878413a
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index 9adedab..74c71cc 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -4088,21 +4088,16 @@
   LocationSummary* locations =
       new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCallOnMainOnly);
   InvokeRuntimeCallingConvention calling_convention;
-  locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
   locations->SetOut(Location::RegisterLocation(RAX));
-  locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(1)));
-  locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(2)));
+  locations->SetInAt(0, Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
+  locations->SetInAt(1, Location::RegisterLocation(calling_convention.GetRegisterAt(1)));
 }
 
 void InstructionCodeGeneratorX86_64::VisitNewArray(HNewArray* instruction) {
-  InvokeRuntimeCallingConvention calling_convention;
-  codegen_->Load64BitValue(CpuRegister(calling_convention.GetRegisterAt(0)),
-                           instruction->GetTypeIndex().index_);
   // Note: if heap poisoning is enabled, the entry point takes cares
   // of poisoning the reference.
-  codegen_->InvokeRuntime(instruction->GetEntrypoint(), instruction, instruction->GetDexPc());
-  CheckEntrypointTypes<kQuickAllocArrayWithAccessCheck, void*, uint32_t, int32_t, ArtMethod*>();
-
+  codegen_->InvokeRuntime(kQuickAllocArrayResolved, instruction, instruction->GetDexPc());
+  CheckEntrypointTypes<kQuickAllocArrayResolved, void*, mirror::Class*, int32_t>();
   DCHECK(!codegen_->IsLeafMethod());
 }