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/runtime/quick_exception_handler.cc b/runtime/quick_exception_handler.cc
index 730759a..8c9782a 100644
--- a/runtime/quick_exception_handler.cc
+++ b/runtime/quick_exception_handler.cc
@@ -17,11 +17,11 @@
 #include "quick_exception_handler.h"
 
 #include "arch/context.h"
+#include "art_method-inl.h"
 #include "dex_instruction.h"
 #include "entrypoints/entrypoint_utils.h"
 #include "entrypoints/runtime_asm_entrypoints.h"
 #include "handle_scope-inl.h"
-#include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/throwable.h"
@@ -53,14 +53,14 @@
   }
 
   bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    mirror::ArtMethod* method = GetMethod();
+    ArtMethod* method = GetMethod();
     exception_handler_->SetHandlerFrameDepth(GetFrameDepth());
     if (method == nullptr) {
       // This is the upcall, we remember the frame and last pc so that we may long jump to them.
       exception_handler_->SetHandlerQuickFramePc(GetCurrentQuickFramePc());
       exception_handler_->SetHandlerQuickFrame(GetCurrentQuickFrame());
       uint32_t next_dex_pc;
-      mirror::ArtMethod* next_art_method;
+      ArtMethod* next_art_method;
       bool has_next = GetNextMethodAndDexPc(&next_art_method, &next_dex_pc);
       // Report the method that did the down call as the handler.
       exception_handler_->SetHandlerDexPc(next_dex_pc);
@@ -78,12 +78,11 @@
       DCHECK(method->IsCalleeSaveMethod());
       return true;
     }
-    StackHandleScope<1> hs(self_);
-    return HandleTryItems(hs.NewHandle(method));
+    return HandleTryItems(method);
   }
 
  private:
-  bool HandleTryItems(Handle<mirror::ArtMethod> method)
+  bool HandleTryItems(ArtMethod* method)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     uint32_t dex_pc = DexFile::kDexNoIndex;
     if (!method->IsNative()) {
@@ -91,13 +90,12 @@
     }
     if (dex_pc != DexFile::kDexNoIndex) {
       bool clear_exception = false;
-      StackHandleScope<1> hs(Thread::Current());
+      StackHandleScope<1> hs(self_);
       Handle<mirror::Class> to_find(hs.NewHandle((*exception_)->GetClass()));
-      uint32_t found_dex_pc = mirror::ArtMethod::FindCatchBlock(method, to_find, dex_pc,
-                                                                &clear_exception);
+      uint32_t found_dex_pc = method->FindCatchBlock(to_find, dex_pc, &clear_exception);
       exception_handler_->SetClearException(clear_exception);
       if (found_dex_pc != DexFile::kDexNoIndex) {
-        exception_handler_->SetHandlerMethod(method.Get());
+        exception_handler_->SetHandlerMethod(method);
         exception_handler_->SetHandlerDexPc(found_dex_pc);
         exception_handler_->SetHandlerQuickFramePc(method->ToNativeQuickPc(found_dex_pc));
         exception_handler_->SetHandlerQuickFrame(GetCurrentQuickFrame());
@@ -132,7 +130,7 @@
   visitor.WalkStack(true);
 
   if (kDebugExceptionDelivery) {
-    if (handler_quick_frame_->AsMirrorPtr() == nullptr) {
+    if (*handler_quick_frame_ == nullptr) {
       LOG(INFO) << "Handler is upcall";
     }
     if (handler_method_ != nullptr) {
@@ -171,7 +169,7 @@
 
   bool VisitFrame() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     exception_handler_->SetHandlerFrameDepth(GetFrameDepth());
-    mirror::ArtMethod* method = GetMethod();
+    ArtMethod* method = GetMethod();
     if (method == nullptr) {
       // This is the upcall, we remember the frame and last pc so that we may long jump to them.
       exception_handler_->SetHandlerQuickFramePc(GetCurrentQuickFramePc());
@@ -191,23 +189,21 @@
     return static_cast<VRegKind>(kinds.at(reg * 2));
   }
 
-  bool HandleDeoptimization(mirror::ArtMethod* m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+  bool HandleDeoptimization(ArtMethod* m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     const DexFile::CodeItem* code_item = m->GetCodeItem();
     CHECK(code_item != nullptr);
     uint16_t num_regs = code_item->registers_size_;
     uint32_t dex_pc = GetDexPc();
-    StackHandleScope<3> hs(self_);  // Dex cache, class loader and method.
+    StackHandleScope<2> hs(self_);  // Dex cache, class loader and method.
     mirror::Class* declaring_class = m->GetDeclaringClass();
     Handle<mirror::DexCache> h_dex_cache(hs.NewHandle(declaring_class->GetDexCache()));
     Handle<mirror::ClassLoader> h_class_loader(hs.NewHandle(declaring_class->GetClassLoader()));
-    Handle<mirror::ArtMethod> h_method(hs.NewHandle(m));
     verifier::MethodVerifier verifier(self_, h_dex_cache->GetDexFile(), h_dex_cache, h_class_loader,
                                       &m->GetClassDef(), code_item, m->GetDexMethodIndex(),
-                                      h_method, m->GetAccessFlags(), true, true, true, true);
+                                      m, m->GetAccessFlags(), true, true, true, true);
     bool verifier_success = verifier.Verify();
-    CHECK(verifier_success) << PrettyMethod(h_method.Get());
-    ShadowFrame* new_frame = ShadowFrame::CreateDeoptimizedFrame(
-        num_regs, nullptr, h_method.Get(), dex_pc);
+    CHECK(verifier_success) << PrettyMethod(m);
+    ShadowFrame* new_frame = ShadowFrame::CreateDeoptimizedFrame(num_regs, nullptr, m, dex_pc);
     self_->SetShadowFrameUnderConstruction(new_frame);
     const std::vector<int32_t> kinds(verifier.DescribeVRegs(dex_pc));
 
@@ -230,7 +226,7 @@
           // Check IsReferenceVReg in case the compiled GC map doesn't agree with the verifier.
           // We don't want to copy a stale reference into the shadow frame as a reference.
           // b/20736048
-          if (GetVReg(h_method.Get(), reg, kind, &value) && IsReferenceVReg(h_method.Get(), reg)) {
+          if (GetVReg(m, reg, kind, &value) && IsReferenceVReg(m, reg)) {
             new_frame->SetVRegReference(reg, reinterpret_cast<mirror::Object*>(value));
           } else {
             new_frame->SetVReg(reg, kDeadValue);
@@ -241,14 +237,14 @@
           if (GetVRegKind(reg + 1, kinds) == kLongHiVReg) {
             // Treat it as a "long" register pair.
             uint64_t value = 0;
-            if (GetVRegPair(h_method.Get(), reg, kLongLoVReg, kLongHiVReg, &value)) {
+            if (GetVRegPair(m, reg, kLongLoVReg, kLongHiVReg, &value)) {
               new_frame->SetVRegLong(reg, value);
             } else {
               new_frame->SetVRegLong(reg, kLongDeadValue);
             }
           } else {
             uint32_t value = 0;
-            if (GetVReg(h_method.Get(), reg, kind, &value)) {
+            if (GetVReg(m, reg, kind, &value)) {
               new_frame->SetVReg(reg, value);
             } else {
               new_frame->SetVReg(reg, kDeadValue);
@@ -260,7 +256,7 @@
             // Nothing to do: we treated it as a "long" register pair.
           } else {
             uint32_t value = 0;
-            if (GetVReg(h_method.Get(), reg, kind, &value)) {
+            if (GetVReg(m, reg, kind, &value)) {
               new_frame->SetVReg(reg, value);
             } else {
               new_frame->SetVReg(reg, kDeadValue);
@@ -270,7 +266,7 @@
         case kDoubleLoVReg:
           if (GetVRegKind(reg + 1, kinds) == kDoubleHiVReg) {
             uint64_t value = 0;
-            if (GetVRegPair(h_method.Get(), reg, kDoubleLoVReg, kDoubleHiVReg, &value)) {
+            if (GetVRegPair(m, reg, kDoubleLoVReg, kDoubleHiVReg, &value)) {
               // Treat it as a "double" register pair.
               new_frame->SetVRegLong(reg, value);
             } else {
@@ -278,7 +274,7 @@
             }
           } else {
             uint32_t value = 0;
-            if (GetVReg(h_method.Get(), reg, kind, &value)) {
+            if (GetVReg(m, reg, kind, &value)) {
               new_frame->SetVReg(reg, value);
             } else {
               new_frame->SetVReg(reg, kDeadValue);
@@ -290,7 +286,7 @@
             // Nothing to do: we treated it as a "double" register pair.
           } else {
             uint32_t value = 0;
-            if (GetVReg(h_method.Get(), reg, kind, &value)) {
+            if (GetVReg(m, reg, kind, &value)) {
               new_frame->SetVReg(reg, value);
             } else {
               new_frame->SetVReg(reg, kDeadValue);
@@ -299,7 +295,7 @@
           break;
         default:
           uint32_t value = 0;
-          if (GetVReg(h_method.Get(), reg, kind, &value)) {
+          if (GetVReg(m, reg, kind, &value)) {
             new_frame->SetVReg(reg, value);
           } else {
             new_frame->SetVReg(reg, kDeadValue);