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/driver/compiler_driver-inl.h b/compiler/driver/compiler_driver-inl.h
index e54cbf6..b25e967 100644
--- a/compiler/driver/compiler_driver-inl.h
+++ b/compiler/driver/compiler_driver-inl.h
@@ -20,8 +20,9 @@
 #include "compiler_driver.h"
 
 #include "art_field-inl.h"
+#include "art_method-inl.h"
+#include "class_linker-inl.h"
 #include "dex_compilation_unit.h"
-#include "mirror/art_method-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/dex_cache-inl.h"
 #include "scoped_thread_state_change.h"
@@ -133,7 +134,7 @@
                                                     ArtMember* member ATTRIBUTE_UNUSED,
                                                     mirror::DexCache* dex_cache ATTRIBUTE_UNUSED,
                                                     uint32_t field_idx ATTRIBUTE_UNUSED) {
-  // Not defined for ArtMember values other than ArtField or mirror::ArtMethod.
+  // Not defined for ArtMember values other than ArtField or ArtMethod.
   UNREACHABLE();
 }
 
@@ -147,10 +148,10 @@
 }
 
 template <>
-inline bool CompilerDriver::CanAccessResolvedMember<mirror::ArtMethod>(
+inline bool CompilerDriver::CanAccessResolvedMember<ArtMethod>(
     mirror::Class* referrer_class,
     mirror::Class* access_to,
-    mirror::ArtMethod* method,
+    ArtMethod* method,
     mirror::DexCache* dex_cache,
     uint32_t field_idx) {
   return referrer_class->CanAccessResolvedMethod(access_to, method, dex_cache, field_idx);
@@ -217,7 +218,7 @@
 
 inline bool CompilerDriver::IsClassOfStaticMethodAvailableToReferrer(
     mirror::DexCache* dex_cache, mirror::Class* referrer_class,
-    mirror::ArtMethod* resolved_method, uint16_t method_idx, uint32_t* storage_index) {
+    ArtMethod* resolved_method, uint16_t method_idx, uint32_t* storage_index) {
   std::pair<bool, bool> result = IsClassOfStaticMemberAvailableToReferrer(
       dex_cache, referrer_class, resolved_method, method_idx, storage_index);
   // Only the first member of `result` is meaningful, as there is no
@@ -239,15 +240,14 @@
   return fields_class == referrer_class || fields_class->IsInitialized();
 }
 
-inline mirror::ArtMethod* CompilerDriver::ResolveMethod(
+inline ArtMethod* CompilerDriver::ResolveMethod(
     ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
     Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
     uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change) {
   DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile());
   DCHECK_EQ(class_loader.Get(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()));
-  mirror::ArtMethod* resolved_method = mUnit->GetClassLinker()->ResolveMethod(
-      *mUnit->GetDexFile(), method_idx, dex_cache, class_loader, NullHandle<mirror::ArtMethod>(),
-      invoke_type);
+  ArtMethod* resolved_method = mUnit->GetClassLinker()->ResolveMethod(
+      *mUnit->GetDexFile(), method_idx, dex_cache, class_loader, nullptr, invoke_type);
   DCHECK_EQ(resolved_method == nullptr, soa.Self()->IsExceptionPending());
   if (UNLIKELY(resolved_method == nullptr)) {
     // Clean up any exception left by type resolution.
@@ -263,7 +263,7 @@
 }
 
 inline void CompilerDriver::GetResolvedMethodDexFileLocation(
-    mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file,
+    ArtMethod* resolved_method, const DexFile** declaring_dex_file,
     uint16_t* declaring_class_idx, uint16_t* declaring_method_idx) {
   mirror::Class* declaring_class = resolved_method->GetDeclaringClass();
   *declaring_dex_file = declaring_class->GetDexCache()->GetDexFile();
@@ -272,7 +272,7 @@
 }
 
 inline uint16_t CompilerDriver::GetResolvedMethodVTableIndex(
-    mirror::ArtMethod* resolved_method, InvokeType type) {
+    ArtMethod* resolved_method, InvokeType type) {
   if (type == kVirtual || type == kSuper) {
     return resolved_method->GetMethodIndex();
   } else if (type == kInterface) {
@@ -285,7 +285,7 @@
 inline int CompilerDriver::IsFastInvoke(
     ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
     Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
-    mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type,
+    mirror::Class* referrer_class, ArtMethod* resolved_method, InvokeType* invoke_type,
     MethodReference* target_method, const MethodReference* devirt_target,
     uintptr_t* direct_code, uintptr_t* direct_method) {
   // Don't try to fast-path if we don't understand the caller's class.
@@ -305,10 +305,12 @@
       (*invoke_type == kVirtual) && (resolved_method->IsFinal() || methods_class->IsFinal());
   // For invoke-super, ensure the vtable index will be correct to dispatch in the vtable of
   // the super class.
+  const size_t pointer_size = InstructionSetPointerSize(GetInstructionSet());
   bool can_sharpen_super_based_on_type = same_dex_file && (*invoke_type == kSuper) &&
       (referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) &&
       resolved_method->GetMethodIndex() < methods_class->GetVTableLength() &&
-      (methods_class->GetVTableEntry(resolved_method->GetMethodIndex()) == resolved_method) &&
+      (methods_class->GetVTableEntry(
+          resolved_method->GetMethodIndex(), pointer_size) == resolved_method) &&
       !resolved_method->IsAbstract();
 
   if (can_sharpen_virtual_based_on_type || can_sharpen_super_based_on_type) {
@@ -316,7 +318,8 @@
     // dex cache, check that this resolved method is where we expect it.
     CHECK_EQ(target_method->dex_file, mUnit->GetDexFile());
     DCHECK_EQ(dex_cache.Get(), mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()));
-    CHECK_EQ(referrer_class->GetDexCache()->GetResolvedMethod(target_method->dex_method_index),
+    CHECK_EQ(referrer_class->GetDexCache()->GetResolvedMethod(
+        target_method->dex_method_index, pointer_size),
              resolved_method) << PrettyMethod(resolved_method);
     int stats_flags = kFlagMethodResolved;
     GetCodeAndMethodForDirectCall(/*out*/invoke_type,
@@ -336,21 +339,18 @@
 
   if ((*invoke_type == kVirtual || *invoke_type == kInterface) && devirt_target != nullptr) {
     // Post-verification callback recorded a more precise invoke target based on its type info.
-    mirror::ArtMethod* called_method;
+    ArtMethod* called_method;
     ClassLinker* class_linker = mUnit->GetClassLinker();
     if (LIKELY(devirt_target->dex_file == mUnit->GetDexFile())) {
-      called_method = class_linker->ResolveMethod(*devirt_target->dex_file,
-                                                  devirt_target->dex_method_index, dex_cache,
-                                                  class_loader, NullHandle<mirror::ArtMethod>(),
-                                                  kVirtual);
+      called_method = class_linker->ResolveMethod(
+          *devirt_target->dex_file, devirt_target->dex_method_index, dex_cache, class_loader,
+          nullptr, kVirtual);
     } else {
       StackHandleScope<1> hs(soa.Self());
-      Handle<mirror::DexCache> target_dex_cache(
-          hs.NewHandle(class_linker->FindDexCache(*devirt_target->dex_file)));
-      called_method = class_linker->ResolveMethod(*devirt_target->dex_file,
-                                                  devirt_target->dex_method_index,
-                                                  target_dex_cache, class_loader,
-                                                  NullHandle<mirror::ArtMethod>(), kVirtual);
+      auto target_dex_cache(hs.NewHandle(class_linker->FindDexCache(*devirt_target->dex_file)));
+      called_method = class_linker->ResolveMethod(
+          *devirt_target->dex_file, devirt_target->dex_method_index, target_dex_cache,
+          class_loader, nullptr, kVirtual);
     }
     CHECK(called_method != nullptr);
     CHECK(!called_method->IsAbstract());
@@ -389,7 +389,7 @@
 }
 
 inline bool CompilerDriver::IsMethodsClassInitialized(mirror::Class* referrer_class,
-                                                      mirror::ArtMethod* resolved_method) {
+                                                      ArtMethod* resolved_method) {
   if (!resolved_method->IsStatic()) {
     return true;
   }