Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
diff --git a/compiler/utils/mips/assembler_mips.cc b/compiler/utils/mips/assembler_mips.cc
index e769489..e55b461 100644
--- a/compiler/utils/mips/assembler_mips.cc
+++ b/compiler/utils/mips/assembler_mips.cc
@@ -696,13 +696,13 @@
   LoadFromOffset(kLoadWord, dest.AsCoreRegister(), SP, src.Int32Value());
 }
 
-void MipsAssembler::LoadRef(ManagedRegister mdest, ManagedRegister base,
-                            MemberOffset offs) {
+void MipsAssembler::LoadRef(ManagedRegister mdest, ManagedRegister base, MemberOffset offs,
+                            bool poison_reference) {
   MipsManagedRegister dest = mdest.AsMips();
   CHECK(dest.IsCoreRegister() && dest.IsCoreRegister());
   LoadFromOffset(kLoadWord, dest.AsCoreRegister(),
                  base.AsMips().AsCoreRegister(), offs.Int32Value());
-  if (kPoisonHeapReferences) {
+  if (kPoisonHeapReferences && poison_reference) {
     Subu(dest.AsCoreRegister(), ZERO, dest.AsCoreRegister());
   }
 }
diff --git a/compiler/utils/mips/assembler_mips.h b/compiler/utils/mips/assembler_mips.h
index 34713e1..7b0fc39 100644
--- a/compiler/utils/mips/assembler_mips.h
+++ b/compiler/utils/mips/assembler_mips.h
@@ -189,9 +189,10 @@
 
   void LoadFromThread32(ManagedRegister mdest, ThreadOffset<4> src, size_t size) OVERRIDE;
 
-  void LoadRef(ManagedRegister dest, FrameOffset  src) OVERRIDE;
+  void LoadRef(ManagedRegister dest, FrameOffset src) OVERRIDE;
 
-  void LoadRef(ManagedRegister mdest, ManagedRegister base, MemberOffset offs) OVERRIDE;
+  void LoadRef(ManagedRegister mdest, ManagedRegister base, MemberOffset offs,
+               bool poison_reference) OVERRIDE;
 
   void LoadRawPtr(ManagedRegister mdest, ManagedRegister base, Offset offs) OVERRIDE;