Some optimizations for the array alloc path.
- Force Array::Alloc() to be inlined.
- Simplify the array size overflow check.
- Turn fill_usable into a template parameter.
- Remove a branch in Array::DataOffset() and avoid
Primitive::ComponentSize(), which has a switch, in the array alloc
path.
- Strength reductions in the array size computation by using component
size shifts instead of component sizes. Store component size shift
in the upper 16 bits of primitive_type field.
- Speedup: ~4% (3435->3284) in MemAllocTest on N4.
Bug: 9986565
Change-Id: I4b142ffac4ab8b5b915836f1660a949d6442344c
diff --git a/runtime/transaction_test.cc b/runtime/transaction_test.cc
index 432a2fe..a14889c 100644
--- a/runtime/transaction_test.cc
+++ b/runtime/transaction_test.cc
@@ -89,7 +89,7 @@
Handle<mirror::Array> h_obj(
hs.NewHandle(
mirror::Array::Alloc<true>(soa.Self(), h_klass.Get(), kArraySize,
- h_klass->GetComponentSize(),
+ h_klass->GetComponentSizeShift(),
Runtime::Current()->GetHeap()->GetCurrentAllocator())));
ASSERT_TRUE(h_obj.Get() != nullptr);
ASSERT_EQ(h_obj->GetClass(), h_klass.Get());