Add per array size allocation entrypoints.

- Update architectures that have fast paths for
  array allocation to use it.
- Will add more fast paths in follow-up CLs.

Test: test-art-target test-art-host.
Change-Id: I138cccd16464a85de22a8ed31c915f876e78fb04
diff --git a/compiler/optimizing/code_generator_arm64.cc b/compiler/optimizing/code_generator_arm64.cc
index 9762ee8..1e89ba5 100644
--- a/compiler/optimizing/code_generator_arm64.cc
+++ b/compiler/optimizing/code_generator_arm64.cc
@@ -4762,7 +4762,9 @@
 void InstructionCodeGeneratorARM64::VisitNewArray(HNewArray* instruction) {
   // Note: if heap poisoning is enabled, the entry point takes cares
   // of poisoning the reference.
-  codegen_->InvokeRuntime(kQuickAllocArrayResolved, instruction, instruction->GetDexPc());
+  QuickEntrypointEnum entrypoint =
+      CodeGenerator::GetArrayAllocationEntrypoint(instruction->GetLoadClass()->GetClass());
+  codegen_->InvokeRuntime(entrypoint, instruction, instruction->GetDexPc());
   CheckEntrypointTypes<kQuickAllocArrayResolved, void*, mirror::Class*, int32_t>();
 }