commit f686c3feabe3519bedd1f3001e5dd598f46946ef
author Mathieu Chartier <mathieuc@google.com> Thu Aug 04 11:08:26 2016 -0700
committer Mathieu Chartier <mathieuc@google.com> Fri Aug 05 10:42:03 2016 -0700
tree 234494fbb4fcf640df4676659d6cf6f987e0d3ab
parent 20b975cc5c5a1f4e6f0a8e525b5d2e63abc413df

ARM64 asm for region space array allocation

Wrote region space tlab array and array resolved allocators in
assembly code. The speedup is a combined increase from checking the
mark bit and having an assembly fast path.

Added resolved, initialized entrypoints for object region TLAB
allocator.

N6P (960000 mhz) EEAC benchmark (average of 50 samples):
CC 1442.309524 -> 1314 (10% improvement)
CMS: 1382.32

Read barrier slow paths reaching C++ code go from 5M to 2.5M.

Bug: 30162165
Bug: 12687968

Test: With CC: N6P boot, run EAAC, test-art-target

Change-Id: I51515b11ef3f795f57eb72fe0f5759618fef5084

runtime/mirror/class-inl.h

diff --git a/runtime/mirror/class-inl.h b/runtime/mirror/class-inl.h
index 8f5419c..8ad47eb 100644
--- a/runtime/mirror/class-inl.h
+++ b/runtime/mirror/class-inl.h
@@ -636,8 +636,9 @@
   static_assert(sizeof(Primitive::Type) == sizeof(int32_t),
                 "art::Primitive::Type and int32_t have different sizes.");
   int32_t v32 = GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_));
-  Primitive::Type type = static_cast<Primitive::Type>(v32 & 0xFFFF);
-  DCHECK_EQ(static_cast<size_t>(v32 >> 16), Primitive::ComponentSizeShift(type));
+  Primitive::Type type = static_cast<Primitive::Type>(v32 & kPrimitiveTypeMask);
+  DCHECK_EQ(static_cast<size_t>(v32 >> kPrimitiveTypeSizeShiftShift),
+            Primitive::ComponentSizeShift(type));
   return type;
 }
 
@@ -646,8 +647,9 @@
   static_assert(sizeof(Primitive::Type) == sizeof(int32_t),
                 "art::Primitive::Type and int32_t have different sizes.");
   int32_t v32 = GetField32<kVerifyFlags>(OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_));
-  size_t size_shift = static_cast<Primitive::Type>(v32 >> 16);
-  DCHECK_EQ(size_shift, Primitive::ComponentSizeShift(static_cast<Primitive::Type>(v32 & 0xFFFF)));
+  size_t size_shift = static_cast<Primitive::Type>(v32 >> kPrimitiveTypeSizeShiftShift);
+  DCHECK_EQ(size_shift,
+            Primitive::ComponentSizeShift(static_cast<Primitive::Type>(v32 & kPrimitiveTypeMask)));
   return size_shift;
 }