Rename A64 port to ARM64 port

src/a64/stub-cache-a64.cc

Index: src/a64/stub-cache-a64.cc
diff --git a/src/a64/stub-cache-a64.cc b/src/a64/stub-cache-a64.cc
deleted file mode 100644
index 1e59c0ef8bc8d65bd698120429a10aad26b61753..0000000000000000000000000000000000000000
--- a/src/a64/stub-cache-a64.cc
+++ /dev/null
@@ -1,1499 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "v8.h"
-
-#if V8_TARGET_ARCH_A64
-
-#include "ic-inl.h"
-#include "codegen.h"
-#include "stub-cache.h"
-
-namespace v8 {
-namespace internal {
-
-
-#define __ ACCESS_MASM(masm)
-
-
-void StubCompiler::GenerateDictionaryNegativeLookup(MacroAssembler* masm,
-                                                    Label* miss_label,
-                                                    Register receiver,
-                                                    Handle<Name> name,
-                                                    Register scratch0,
-                                                    Register scratch1) {
-  ASSERT(!AreAliased(receiver, scratch0, scratch1));
-  ASSERT(name->IsUniqueName());
-  Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1);
-  __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
-
-  Label done;
-
-  const int kInterceptorOrAccessCheckNeededMask =
-      (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded);
-
-  // Bail out if the receiver has a named interceptor or requires access checks.
-  Register map = scratch1;
-  __ Ldr(map, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ Ldrb(scratch0, FieldMemOperand(map, Map::kBitFieldOffset));
-  __ Tst(scratch0, kInterceptorOrAccessCheckNeededMask);
-  __ B(ne, miss_label);
-
-  // Check that receiver is a JSObject.
-  __ Ldrb(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset));
-  __ Cmp(scratch0, FIRST_SPEC_OBJECT_TYPE);
-  __ B(lt, miss_label);
-
-  // Load properties array.
-  Register properties = scratch0;
-  __ Ldr(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
-  // Check that the properties array is a dictionary.
-  __ Ldr(map, FieldMemOperand(properties, HeapObject::kMapOffset));
-  __ JumpIfNotRoot(map, Heap::kHashTableMapRootIndex, miss_label);
-
-  NameDictionaryLookupStub::GenerateNegativeLookup(masm,
-                                                     miss_label,
-                                                     &done,
-                                                     receiver,
-                                                     properties,
-                                                     name,
-                                                     scratch1);
-  __ Bind(&done);
-  __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1);
-}
-
-
-// Probe primary or secondary table.
-// If the entry is found in the cache, the generated code jump to the first
-// instruction of the stub in the cache.
-// If there is a miss the code fall trough.
-//
-// 'receiver', 'name' and 'offset' registers are preserved on miss.
-static void ProbeTable(Isolate* isolate,
-                       MacroAssembler* masm,
-                       Code::Flags flags,
-                       StubCache::Table table,
-                       Register receiver,
-                       Register name,
-                       Register offset,
-                       Register scratch,
-                       Register scratch2,
-                       Register scratch3) {
-  // Some code below relies on the fact that the Entry struct contains
-  // 3 pointers (name, code, map).
-  STATIC_ASSERT(sizeof(StubCache::Entry) == (3 * kPointerSize));
-
-  ExternalReference key_offset(isolate->stub_cache()->key_reference(table));
-  ExternalReference value_offset(isolate->stub_cache()->value_reference(table));
-  ExternalReference map_offset(isolate->stub_cache()->map_reference(table));
-
-  uintptr_t key_off_addr = reinterpret_cast<uintptr_t>(key_offset.address());
-  uintptr_t value_off_addr =
-      reinterpret_cast<uintptr_t>(value_offset.address());
-  uintptr_t map_off_addr = reinterpret_cast<uintptr_t>(map_offset.address());
-
-  Label miss;
-
-  ASSERT(!AreAliased(name, offset, scratch, scratch2, scratch3));
-
-  // Multiply by 3 because there are 3 fields per entry.
-  __ Add(scratch3, offset, Operand(offset, LSL, 1));
-
-  // Calculate the base address of the entry.
-  __ Mov(scratch, key_offset);
-  __ Add(scratch, scratch, Operand(scratch3, LSL, kPointerSizeLog2));
-
-  // Check that the key in the entry matches the name.
-  __ Ldr(scratch2, MemOperand(scratch));
-  __ Cmp(name, scratch2);
-  __ B(ne, &miss);
-
-  // Check the map matches.
-  __ Ldr(scratch2, MemOperand(scratch, map_off_addr - key_off_addr));
-  __ Ldr(scratch3, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ Cmp(scratch2, scratch3);
-  __ B(ne, &miss);
-
-  // Get the code entry from the cache.
-  __ Ldr(scratch, MemOperand(scratch, value_off_addr - key_off_addr));
-
-  // Check that the flags match what we're looking for.
-  __ Ldr(scratch2.W(), FieldMemOperand(scratch, Code::kFlagsOffset));
-  __ Bic(scratch2.W(), scratch2.W(), Code::kFlagsNotUsedInLookup);
-  __ Cmp(scratch2.W(), flags);
-  __ B(ne, &miss);
-
-#ifdef DEBUG
-  if (FLAG_test_secondary_stub_cache && table == StubCache::kPrimary) {
-    __ B(&miss);
-  } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) {
-    __ B(&miss);
-  }
-#endif
-
-  // Jump to the first instruction in the code stub.
-  __ Add(scratch, scratch, Code::kHeaderSize - kHeapObjectTag);
-  __ Br(scratch);
-
-  // Miss: fall through.
-  __ Bind(&miss);
-}
-
-
-void StubCache::GenerateProbe(MacroAssembler* masm,
-                              Code::Flags flags,
-                              Register receiver,
-                              Register name,
-                              Register scratch,
-                              Register extra,
-                              Register extra2,
-                              Register extra3) {
-  Isolate* isolate = masm->isolate();
-  Label miss;
-
-  // Make sure the flags does not name a specific type.
-  ASSERT(Code::ExtractTypeFromFlags(flags) == 0);
-
-  // Make sure that there are no register conflicts.
-  ASSERT(!AreAliased(receiver, name, scratch, extra, extra2, extra3));
-
-  // Make sure extra and extra2 registers are valid.
-  ASSERT(!extra.is(no_reg));
-  ASSERT(!extra2.is(no_reg));
-  ASSERT(!extra3.is(no_reg));
-
-  Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->megamorphic_stub_cache_probes(), 1,
-                      extra2, extra3);
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(receiver, &miss);
-
-  // Compute the hash for primary table.
-  __ Ldr(scratch, FieldMemOperand(name, Name::kHashFieldOffset));
-  __ Ldr(extra, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ Add(scratch, scratch, extra);
-  __ Eor(scratch, scratch, flags);
-  // We shift out the last two bits because they are not part of the hash.
-  __ Ubfx(scratch, scratch, kHeapObjectTagSize,
-          CountTrailingZeros(kPrimaryTableSize, 64));
-
-  // Probe the primary table.
-  ProbeTable(isolate, masm, flags, kPrimary, receiver, name,
-      scratch, extra, extra2, extra3);
-
-  // Primary miss: Compute hash for secondary table.
-  __ Sub(scratch, scratch, Operand(name, LSR, kHeapObjectTagSize));
-  __ Add(scratch, scratch, flags >> kHeapObjectTagSize);
-  __ And(scratch, scratch, kSecondaryTableSize - 1);
-
-  // Probe the secondary table.
-  ProbeTable(isolate, masm, flags, kSecondary, receiver, name,
-      scratch, extra, extra2, extra3);
-
-  // Cache miss: Fall-through and let caller handle the miss by
-  // entering the runtime system.
-  __ Bind(&miss);
-  __ IncrementCounter(counters->megamorphic_stub_cache_misses(), 1,
-                      extra2, extra3);
-}
-
-
-void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm,
-                                                       int index,
-                                                       Register prototype) {
-  // Load the global or builtins object from the current context.
-  __ Ldr(prototype, GlobalObjectMemOperand());
-  // Load the native context from the global or builtins object.
-  __ Ldr(prototype,
-         FieldMemOperand(prototype, GlobalObject::kNativeContextOffset));
-  // Load the function from the native context.
-  __ Ldr(prototype, ContextMemOperand(prototype, index));
-  // Load the initial map. The global functions all have initial maps.
-  __ Ldr(prototype,
-         FieldMemOperand(prototype, JSFunction::kPrototypeOrInitialMapOffset));
-  // Load the prototype from the initial map.
-  __ Ldr(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
-}
-
-
-void StubCompiler::GenerateDirectLoadGlobalFunctionPrototype(
-    MacroAssembler* masm,
-    int index,
-    Register prototype,
-    Label* miss) {
-  Isolate* isolate = masm->isolate();
-  // Get the global function with the given index.
-  Handle<JSFunction> function(
-      JSFunction::cast(isolate->native_context()->get(index)));
-
-  // Check we're still in the same context.
-  Register scratch = prototype;
-  __ Ldr(scratch, GlobalObjectMemOperand());
-  __ Ldr(scratch, FieldMemOperand(scratch, GlobalObject::kNativeContextOffset));
-  __ Ldr(scratch, ContextMemOperand(scratch, index));
-  __ Cmp(scratch, Operand(function));
-  __ B(ne, miss);
-
-  // Load its initial map. The global functions all have initial maps.
-  __ Mov(prototype, Operand(Handle<Map>(function->initial_map())));
-  // Load the prototype from the initial map.
-  __ Ldr(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
-}
-
-
-void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm,
-                                            Register dst,
-                                            Register src,
-                                            bool inobject,
-                                            int index,
-                                            Representation representation) {
-  ASSERT(!representation.IsDouble());
-  USE(representation);
-  if (inobject) {
-    int offset = index * kPointerSize;
-    __ Ldr(dst, FieldMemOperand(src, offset));
-  } else {
-    // Calculate the offset into the properties array.
-    int offset = index * kPointerSize + FixedArray::kHeaderSize;
-    __ Ldr(dst, FieldMemOperand(src, JSObject::kPropertiesOffset));
-    __ Ldr(dst, FieldMemOperand(dst, offset));
-  }
-}
-
-
-void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm,
-                                           Register receiver,
-                                           Register scratch,
-                                           Label* miss_label) {
-  ASSERT(!AreAliased(receiver, scratch));
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(receiver, miss_label);
-
-  // Check that the object is a JS array.
-  __ JumpIfNotObjectType(receiver, scratch, scratch, JS_ARRAY_TYPE,
-                         miss_label);
-
-  // Load length directly from the JS array.
-  __ Ldr(x0, FieldMemOperand(receiver, JSArray::kLengthOffset));
-  __ Ret();
-}
-
-
-void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm,
-                                                 Register receiver,
-                                                 Register scratch1,
-                                                 Register scratch2,
-                                                 Label* miss_label) {
-  __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label);
-  // TryGetFunctionPrototype can't put the result directly in x0 because the
-  // 3 inputs registers can't alias and we call this function from
-  // LoadIC::GenerateFunctionPrototype, where receiver is x0. So we explicitly
-  // move the result in x0.
-  __ Mov(x0, scratch1);
-  __ Ret();
-}
-
-
-// Generate code to check that a global property cell is empty. Create
-// the property cell at compilation time if no cell exists for the
-// property.
-void StubCompiler::GenerateCheckPropertyCell(MacroAssembler* masm,
-                                             Handle<JSGlobalObject> global,
-                                             Handle<Name> name,
-                                             Register scratch,
-                                             Label* miss) {
-  Handle<Cell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
-  ASSERT(cell->value()->IsTheHole());
-  __ Mov(scratch, Operand(cell));
-  __ Ldr(scratch, FieldMemOperand(scratch, Cell::kValueOffset));
-  __ JumpIfNotRoot(scratch, Heap::kTheHoleValueRootIndex, miss);
-}
-
-
-void StoreStubCompiler::GenerateNegativeHolderLookup(
-    MacroAssembler* masm,
-    Handle<JSObject> holder,
-    Register holder_reg,
-    Handle<Name> name,
-    Label* miss) {
-  if (holder->IsJSGlobalObject()) {
-    GenerateCheckPropertyCell(
-        masm, Handle<JSGlobalObject>::cast(holder), name, scratch1(), miss);
-  } else if (!holder->HasFastProperties() && !holder->IsJSGlobalProxy()) {
-    GenerateDictionaryNegativeLookup(
-        masm, miss, holder_reg, name, scratch1(), scratch2());
-  }
-}
-
-
-// Generate StoreTransition code, value is passed in x0 register.
-// When leaving generated code after success, the receiver_reg and storage_reg
-// may be clobbered. Upon branch to miss_label, the receiver and name registers
-// have their original values.
-void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
-                                                Handle<JSObject> object,
-                                                LookupResult* lookup,
-                                                Handle<Map> transition,
-                                                Handle<Name> name,
-                                                Register receiver_reg,
-                                                Register storage_reg,
-                                                Register value_reg,
-                                                Register scratch1,
-                                                Register scratch2,
-                                                Register scratch3,
-                                                Label* miss_label,
-                                                Label* slow) {
-  Label exit;
-
-  ASSERT(!AreAliased(receiver_reg, storage_reg, value_reg,
-                     scratch1, scratch2, scratch3));
-
-  // We don't need scratch3.
-  scratch3 = NoReg;
-
-  int descriptor = transition->LastAdded();
-  DescriptorArray* descriptors = transition->instance_descriptors();
-  PropertyDetails details = descriptors->GetDetails(descriptor);
-  Representation representation = details.representation();
-  ASSERT(!representation.IsNone());
-
-  if (details.type() == CONSTANT) {
-    Handle<Object> constant(descriptors->GetValue(descriptor), masm->isolate());
-    __ LoadObject(scratch1, constant);
-    __ Cmp(value_reg, scratch1);
-    __ B(ne, miss_label);
-  } else if (representation.IsSmi()) {
-    __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (representation.IsHeapObject()) {
-    __ JumpIfSmi(value_reg, miss_label);
-  } else if (representation.IsDouble()) {
-    Label do_store, heap_number;
-    __ AllocateHeapNumber(storage_reg, slow, scratch1, scratch2);
-
-    // TODO(jbramley): Is fp_scratch the most appropriate FP scratch register?
-    // It's only used in Fcmp, but it's not really safe to use it like this.
-    __ JumpIfNotSmi(value_reg, &heap_number);
-    __ SmiUntagToDouble(fp_scratch, value_reg);
-    __ B(&do_store);
-
-    __ Bind(&heap_number);
-    __ CheckMap(value_reg, scratch1, Heap::kHeapNumberMapRootIndex,
-                miss_label, DONT_DO_SMI_CHECK);
-    __ Ldr(fp_scratch, FieldMemOperand(value_reg, HeapNumber::kValueOffset));
-
-    __ Bind(&do_store);
-    __ Str(fp_scratch, FieldMemOperand(storage_reg, HeapNumber::kValueOffset));
-  }
-
-  // Stub never generated for non-global objects that require access checks.
-  ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded());
-
-  // Perform map transition for the receiver if necessary.
-  if ((details.type() == FIELD) &&
-      (object->map()->unused_property_fields() == 0)) {
-    // The properties must be extended before we can store the value.
-    // We jump to a runtime call that extends the properties array.
-    __ Mov(scratch1, Operand(transition));
-    __ Push(receiver_reg, scratch1, value_reg);
-    __ TailCallExternalReference(
-        ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage),
-                          masm->isolate()),
-        3,
-        1);
-    return;
-  }
-
-  // Update the map of the object.
-  __ Mov(scratch1, Operand(transition));
-  __ Str(scratch1, FieldMemOperand(receiver_reg, HeapObject::kMapOffset));
-
-  // Update the write barrier for the map field.
-  __ RecordWriteField(receiver_reg,
-                      HeapObject::kMapOffset,
-                      scratch1,
-                      scratch2,
-                      kLRHasNotBeenSaved,
-                      kDontSaveFPRegs,
-                      OMIT_REMEMBERED_SET,
-                      OMIT_SMI_CHECK);
-
-  if (details.type() == CONSTANT) {
-    ASSERT(value_reg.is(x0));
-    __ Ret();
-    return;
-  }
-
-  int index = transition->instance_descriptors()->GetFieldIndex(
-      transition->LastAdded());
-
-  // Adjust for the number of properties stored in the object. Even in the
-  // face of a transition we can use the old map here because the size of the
-  // object and the number of in-object properties is not going to change.
-  index -= object->map()->inobject_properties();
-
-  // TODO(verwaest): Share this code as a code stub.
-  SmiCheck smi_check = representation.IsTagged()
-      ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
-  Register prop_reg = representation.IsDouble() ? storage_reg : value_reg;
-  if (index < 0) {
-    // Set the property straight into the object.
-    int offset = object->map()->instance_size() + (index * kPointerSize);
-    __ Str(prop_reg, FieldMemOperand(receiver_reg, offset));
-
-    if (!representation.IsSmi()) {
-      // Update the write barrier for the array address.
-      if (!representation.IsDouble()) {
-        __ Mov(storage_reg, value_reg);
-      }
-      __ RecordWriteField(receiver_reg,
-                          offset,
-                          storage_reg,
-                          scratch1,
-                          kLRHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
-  } else {
-    // Write to the properties array.
-    int offset = index * kPointerSize + FixedArray::kHeaderSize;
-    // Get the properties array
-    __ Ldr(scratch1,
-           FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-    __ Str(prop_reg, FieldMemOperand(scratch1, offset));
-
-    if (!representation.IsSmi()) {
-      // Update the write barrier for the array address.
-      if (!representation.IsDouble()) {
-        __ Mov(storage_reg, value_reg);
-      }
-      __ RecordWriteField(scratch1,
-                          offset,
-                          storage_reg,
-                          receiver_reg,
-                          kLRHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
-  }
-
-  __ Bind(&exit);
-  // Return the value (register x0).
-  ASSERT(value_reg.is(x0));
-  __ Ret();
-}
-
-
-// Generate StoreField code, value is passed in x0 register.
-// When leaving generated code after success, the receiver_reg and name_reg may
-// be clobbered. Upon branch to miss_label, the receiver and name registers have
-// their original values.
-void StoreStubCompiler::GenerateStoreField(MacroAssembler* masm,
-                                           Handle<JSObject> object,
-                                           LookupResult* lookup,
-                                           Register receiver_reg,
-                                           Register name_reg,
-                                           Register value_reg,
-                                           Register scratch1,
-                                           Register scratch2,
-                                           Label* miss_label) {
-  // x0 : value
-  Label exit;
-
-  // Stub never generated for non-global objects that require access
-  // checks.
-  ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded());
-
-  int index = lookup->GetFieldIndex().field_index();
-
-  // Adjust for the number of properties stored in the object. Even in the
-  // face of a transition we can use the old map here because the size of the
-  // object and the number of in-object properties is not going to change.
-  index -= object->map()->inobject_properties();
-
-  Representation representation = lookup->representation();
-  ASSERT(!representation.IsNone());
-  if (representation.IsSmi()) {
-    __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (representation.IsHeapObject()) {
-    __ JumpIfSmi(value_reg, miss_label);
-  } else if (representation.IsDouble()) {
-    // Load the double storage.
-    if (index < 0) {
-      int offset = (index * kPointerSize) + object->map()->instance_size();
-      __ Ldr(scratch1, FieldMemOperand(receiver_reg, offset));
-    } else {
-      int offset = (index * kPointerSize) + FixedArray::kHeaderSize;
-      __ Ldr(scratch1,
-             FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-      __ Ldr(scratch1, FieldMemOperand(scratch1, offset));
-    }
-
-    // Store the value into the storage.
-    Label do_store, heap_number;
-    // TODO(jbramley): Is fp_scratch the most appropriate FP scratch register?
-    // It's only used in Fcmp, but it's not really safe to use it like this.
-    __ JumpIfNotSmi(value_reg, &heap_number);
-    __ SmiUntagToDouble(fp_scratch, value_reg);
-    __ B(&do_store);
-
-    __ Bind(&heap_number);
-    __ CheckMap(value_reg, scratch2, Heap::kHeapNumberMapRootIndex,
-                miss_label, DONT_DO_SMI_CHECK);
-    __ Ldr(fp_scratch, FieldMemOperand(value_reg, HeapNumber::kValueOffset));
-
-    __ Bind(&do_store);
-    __ Str(fp_scratch, FieldMemOperand(scratch1, HeapNumber::kValueOffset));
-
-    // Return the value (register x0).
-    ASSERT(value_reg.is(x0));
-    __ Ret();
-    return;
-  }
-
-  // TODO(verwaest): Share this code as a code stub.
-  SmiCheck smi_check = representation.IsTagged()
-      ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
-  if (index < 0) {
-    // Set the property straight into the object.
-    int offset = object->map()->instance_size() + (index * kPointerSize);
-    __ Str(value_reg, FieldMemOperand(receiver_reg, offset));
-
-    if (!representation.IsSmi()) {
-      // Skip updating write barrier if storing a smi.
-      __ JumpIfSmi(value_reg, &exit);
-
-      // Update the write barrier for the array address.
-      // Pass the now unused name_reg as a scratch register.
-      __ Mov(name_reg, value_reg);
-      __ RecordWriteField(receiver_reg,
-                          offset,
-                          name_reg,
-                          scratch1,
-                          kLRHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
-  } else {
-    // Write to the properties array.
-    int offset = index * kPointerSize + FixedArray::kHeaderSize;
-    // Get the properties array
-    __ Ldr(scratch1,
-           FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-    __ Str(value_reg, FieldMemOperand(scratch1, offset));
-
-    if (!representation.IsSmi()) {
-      // Skip updating write barrier if storing a smi.
-      __ JumpIfSmi(value_reg, &exit);
-
-      // Update the write barrier for the array address.
-      // Ok to clobber receiver_reg and name_reg, since we return.
-      __ Mov(name_reg, value_reg);
-      __ RecordWriteField(scratch1,
-                          offset,
-                          name_reg,
-                          receiver_reg,
-                          kLRHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
-  }
-
-  __ Bind(&exit);
-  // Return the value (register x0).
-  ASSERT(value_reg.is(x0));
-  __ Ret();
-}
-
-
-void StoreStubCompiler::GenerateRestoreName(MacroAssembler* masm,
-                                            Label* label,
-                                            Handle<Name> name) {
-  if (!label->is_unused()) {
-    __ Bind(label);
-    __ Mov(this->name(), Operand(name));
-  }
-}
-
-
-static void PushInterceptorArguments(MacroAssembler* masm,
-                                     Register receiver,
-                                     Register holder,
-                                     Register name,
-                                     Handle<JSObject> holder_obj) {
-  STATIC_ASSERT(StubCache::kInterceptorArgsNameIndex == 0);
-  STATIC_ASSERT(StubCache::kInterceptorArgsInfoIndex == 1);
-  STATIC_ASSERT(StubCache::kInterceptorArgsThisIndex == 2);
-  STATIC_ASSERT(StubCache::kInterceptorArgsHolderIndex == 3);
-  STATIC_ASSERT(StubCache::kInterceptorArgsLength == 4);
-
-  __ Push(name);
-  Handle<InterceptorInfo> interceptor(holder_obj->GetNamedInterceptor());
-  ASSERT(!masm->isolate()->heap()->InNewSpace(*interceptor));
-  Register scratch = name;
-  __ Mov(scratch, Operand(interceptor));
-  __ Push(scratch, receiver, holder);
-}
-
-
-static void CompileCallLoadPropertyWithInterceptor(
-    MacroAssembler* masm,
-    Register receiver,
-    Register holder,
-    Register name,
-    Handle<JSObject> holder_obj,
-    IC::UtilityId id) {
-  PushInterceptorArguments(masm, receiver, holder, name, holder_obj);
-
-  __ CallExternalReference(
-      ExternalReference(IC_Utility(id), masm->isolate()),
-      StubCache::kInterceptorArgsLength);
-}
-
-
-// Generate call to api function.
-void StubCompiler::GenerateFastApiCall(MacroAssembler* masm,
-                                       const CallOptimization& optimization,
-                                       Handle<Map> receiver_map,
-                                       Register receiver,
-                                       Register scratch,
-                                       bool is_store,
-                                       int argc,
-                                       Register* values) {
-  ASSERT(!AreAliased(receiver, scratch));
-
-  MacroAssembler::PushPopQueue queue(masm);
-  queue.Queue(receiver);
-  // Write the arguments to the stack frame.
-  for (int i = 0; i < argc; i++) {
-    Register arg = values[argc-1-i];
-    ASSERT(!AreAliased(receiver, scratch, arg));
-    queue.Queue(arg);
-  }
-  queue.PushQueued();
-
-  ASSERT(optimization.is_simple_api_call());
-
-  // Abi for CallApiFunctionStub.
-  Register callee = x0;
-  Register call_data = x4;
-  Register holder = x2;
-  Register api_function_address = x1;
-
-  // Put holder in place.
-  CallOptimization::HolderLookup holder_lookup;
-  Handle<JSObject> api_holder =
-      optimization.LookupHolderOfExpectedType(receiver_map, &holder_lookup);
-  switch (holder_lookup) {
-    case CallOptimization::kHolderIsReceiver:
-      __ Mov(holder, receiver);
-      break;
-    case CallOptimization::kHolderFound:
-      __ LoadObject(holder, api_holder);
-      break;
-    case CallOptimization::kHolderNotFound:
-      UNREACHABLE();
-      break;
-  }
-
-  Isolate* isolate = masm->isolate();
-  Handle<JSFunction> function = optimization.constant_function();
-  Handle<CallHandlerInfo> api_call_info = optimization.api_call_info();
-  Handle<Object> call_data_obj(api_call_info->data(), isolate);
-
-  // Put callee in place.
-  __ LoadObject(callee, function);
-
-  bool call_data_undefined = false;
-  // Put call_data in place.
-  if (isolate->heap()->InNewSpace(*call_data_obj)) {
-    __ LoadObject(call_data, api_call_info);
-    __ Ldr(call_data, FieldMemOperand(call_data, CallHandlerInfo::kDataOffset));
-  } else if (call_data_obj->IsUndefined()) {
-    call_data_undefined = true;
-    __ LoadRoot(call_data, Heap::kUndefinedValueRootIndex);
-  } else {
-    __ LoadObject(call_data, call_data_obj);
-  }
-
-  // Put api_function_address in place.
-  Address function_address = v8::ToCData<Address>(api_call_info->callback());
-  ApiFunction fun(function_address);
-  ExternalReference ref = ExternalReference(&fun,
-                                            ExternalReference::DIRECT_API_CALL,
-                                            masm->isolate());
-  __ Mov(api_function_address, ref);
-
-  // Jump to stub.
-  CallApiFunctionStub stub(is_store, call_data_undefined, argc);
-  __ TailCallStub(&stub);
-}
-
-
-void StubCompiler::GenerateTailCall(MacroAssembler* masm, Handle<Code> code) {
-  __ Jump(code, RelocInfo::CODE_TARGET);
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm())
-
-
-Register StubCompiler::CheckPrototypes(Handle<HeapType> type,
-                                       Register object_reg,
-                                       Handle<JSObject> holder,
-                                       Register holder_reg,
-                                       Register scratch1,
-                                       Register scratch2,
-                                       Handle<Name> name,
-                                       Label* miss,
-                                       PrototypeCheckType check) {
-  Handle<Map> receiver_map(IC::TypeToMap(*type, isolate()));
-
-  // object_reg and holder_reg registers can alias.
-  ASSERT(!AreAliased(object_reg, scratch1, scratch2));
-  ASSERT(!AreAliased(holder_reg, scratch1, scratch2));
-
-  // Keep track of the current object in register reg.
-  Register reg = object_reg;
-  int depth = 0;
-
-  Handle<JSObject> current = Handle<JSObject>::null();
-  if (type->IsConstant()) {
-    current = Handle<JSObject>::cast(type->AsConstant());
-  }
-  Handle<JSObject> prototype = Handle<JSObject>::null();
-  Handle<Map> current_map = receiver_map;
-  Handle<Map> holder_map(holder->map());
-  // Traverse the prototype chain and check the maps in the prototype chain for
-  // fast and global objects or do negative lookup for normal objects.
-  while (!current_map.is_identical_to(holder_map)) {
-    ++depth;
-
-    // Only global objects and objects that do not require access
-    // checks are allowed in stubs.
-    ASSERT(current_map->IsJSGlobalProxyMap() ||
-           !current_map->is_access_check_needed());
-
-    prototype = handle(JSObject::cast(current_map->prototype()));
-    if (current_map->is_dictionary_map() &&
-        !current_map->IsJSGlobalObjectMap() &&
-        !current_map->IsJSGlobalProxyMap()) {
-      if (!name->IsUniqueName()) {
-        ASSERT(name->IsString());
-        name = factory()->InternalizeString(Handle<String>::cast(name));
-      }
-      ASSERT(current.is_null() ||
-             (current->property_dictionary()->FindEntry(*name) ==
-              NameDictionary::kNotFound));
-
-      GenerateDictionaryNegativeLookup(masm(), miss, reg, name,
-                                       scratch1, scratch2);
-
-      __ Ldr(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset));
-      reg = holder_reg;  // From now on the object will be in holder_reg.
-      __ Ldr(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset));
-    } else {
-      bool need_map = (depth != 1 || check == CHECK_ALL_MAPS) ||
-                      heap()->InNewSpace(*prototype);
-      Register map_reg = NoReg;
-      if (need_map) {
-        map_reg = scratch1;
-        __ Ldr(map_reg, FieldMemOperand(reg, HeapObject::kMapOffset));
-      }
-
-      if (depth != 1 || check == CHECK_ALL_MAPS) {
-        __ CheckMap(map_reg, current_map, miss, DONT_DO_SMI_CHECK);
-      }
-
-      // Check access rights to the global object.  This has to happen after
-      // the map check so that we know that the object is actually a global
-      // object.
-      if (current_map->IsJSGlobalProxyMap()) {
-        UseScratchRegisterScope temps(masm());
-        __ CheckAccessGlobalProxy(reg, scratch2, temps.AcquireX(), miss);
-      } else if (current_map->IsJSGlobalObjectMap()) {
-        GenerateCheckPropertyCell(
-            masm(), Handle<JSGlobalObject>::cast(current), name,
-            scratch2, miss);
-      }
-
-      reg = holder_reg;  // From now on the object will be in holder_reg.
-
-      if (heap()->InNewSpace(*prototype)) {
-        // The prototype is in new space; we cannot store a reference to it
-        // in the code.  Load it from the map.
-        __ Ldr(reg, FieldMemOperand(map_reg, Map::kPrototypeOffset));
-      } else {
-        // The prototype is in old space; load it directly.
-        __ Mov(reg, Operand(prototype));
-      }
-    }
-
-    // Go to the next object in the prototype chain.
-    current = prototype;
-    current_map = handle(current->map());
-  }
-
-  // Log the check depth.
-  LOG(isolate(), IntEvent("check-maps-depth", depth + 1));
-
-  // Check the holder map.
-  if (depth != 0 || check == CHECK_ALL_MAPS) {
-    // Check the holder map.
-    __ CheckMap(reg, scratch1, current_map, miss, DONT_DO_SMI_CHECK);
-  }
-
-  // Perform security check for access to the global object.
-  ASSERT(current_map->IsJSGlobalProxyMap() ||
-         !current_map->is_access_check_needed());
-  if (current_map->IsJSGlobalProxyMap()) {
-    __ CheckAccessGlobalProxy(reg, scratch1, scratch2, miss);
-  }
-
-  // Return the register containing the holder.
-  return reg;
-}
-
-
-void LoadStubCompiler::HandlerFrontendFooter(Handle<Name> name, Label* miss) {
-  if (!miss->is_unused()) {
-    Label success;
-    __ B(&success);
-
-    __ Bind(miss);
-    TailCallBuiltin(masm(), MissBuiltin(kind()));
-
-    __ Bind(&success);
-  }
-}
-
-
-void StoreStubCompiler::HandlerFrontendFooter(Handle<Name> name, Label* miss) {
-  if (!miss->is_unused()) {
-    Label success;
-    __ B(&success);
-
-    GenerateRestoreName(masm(), miss, name);
-    TailCallBuiltin(masm(), MissBuiltin(kind()));
-
-    __ Bind(&success);
-  }
-}
-
-
-Register LoadStubCompiler::CallbackHandlerFrontend(Handle<HeapType> type,
-                                                   Register object_reg,
-                                                   Handle<JSObject> holder,
-                                                   Handle<Name> name,
-                                                   Handle<Object> callback) {
-  Label miss;
-
-  Register reg = HandlerFrontendHeader(type, object_reg, holder, name, &miss);
-  // HandlerFrontendHeader can return its result into scratch1() so do not
-  // use it.
-  Register scratch2 = this->scratch2();
-  Register scratch3 = this->scratch3();
-  Register dictionary = this->scratch4();
-  ASSERT(!AreAliased(reg, scratch2, scratch3, dictionary));
-
-  if (!holder->HasFastProperties() && !holder->IsJSGlobalObject()) {
-    // Load the properties dictionary.
-    __ Ldr(dictionary, FieldMemOperand(reg, JSObject::kPropertiesOffset));
-
-    // Probe the dictionary.
-    Label probe_done;
-    NameDictionaryLookupStub::GeneratePositiveLookup(masm(),
-                                                     &miss,
-                                                     &probe_done,
-                                                     dictionary,
-                                                     this->name(),
-                                                     scratch2,
-                                                     scratch3);
-    __ Bind(&probe_done);
-
-    // If probing finds an entry in the dictionary, scratch3 contains the
-    // pointer into the dictionary. Check that the value is the callback.
-    Register pointer = scratch3;
-    const int kElementsStartOffset = NameDictionary::kHeaderSize +
-        NameDictionary::kElementsStartIndex * kPointerSize;
-    const int kValueOffset = kElementsStartOffset + kPointerSize;
-    __ Ldr(scratch2, FieldMemOperand(pointer, kValueOffset));
-    __ Cmp(scratch2, Operand(callback));
-    __ B(ne, &miss);
-  }
-
-  HandlerFrontendFooter(name, &miss);
-  return reg;
-}
-
-
-void LoadStubCompiler::GenerateLoadField(Register reg,
-                                         Handle<JSObject> holder,
-                                         PropertyIndex field,
-                                         Representation representation) {
-  __ Mov(receiver(), reg);
-  if (kind() == Code::LOAD_IC) {
-    LoadFieldStub stub(field.is_inobject(holder),
-                       field.translate(holder),
-                       representation);
-    GenerateTailCall(masm(), stub.GetCode(isolate()));
-  } else {
-    KeyedLoadFieldStub stub(field.is_inobject(holder),
-                            field.translate(holder),
-                            representation);
-    GenerateTailCall(masm(), stub.GetCode(isolate()));
-  }
-}
-
-
-void LoadStubCompiler::GenerateLoadConstant(Handle<Object> value) {
-  // Return the constant value.
-  __ LoadObject(x0, value);
-  __ Ret();
-}
-
-
-void LoadStubCompiler::GenerateLoadCallback(
-    Register reg,
-    Handle<ExecutableAccessorInfo> callback) {
-  ASSERT(!AreAliased(scratch2(), scratch3(), scratch4(), reg));
-
-  // Build ExecutableAccessorInfo::args_ list on the stack and push property
-  // name below the exit frame to make GC aware of them and store pointers to
-  // them.
-  STATIC_ASSERT(PropertyCallbackArguments::kHolderIndex == 0);
-  STATIC_ASSERT(PropertyCallbackArguments::kIsolateIndex == 1);
-  STATIC_ASSERT(PropertyCallbackArguments::kReturnValueDefaultValueIndex == 2);
-  STATIC_ASSERT(PropertyCallbackArguments::kReturnValueOffset == 3);
-  STATIC_ASSERT(PropertyCallbackArguments::kDataIndex == 4);
-  STATIC_ASSERT(PropertyCallbackArguments::kThisIndex == 5);
-  STATIC_ASSERT(PropertyCallbackArguments::kArgsLength == 6);
-
-  __ Push(receiver());
-
-  if (heap()->InNewSpace(callback->data())) {
-    __ Mov(scratch3(), Operand(callback));
-    __ Ldr(scratch3(), FieldMemOperand(scratch3(),
-                                       ExecutableAccessorInfo::kDataOffset));
-  } else {
-    __ Mov(scratch3(), Operand(Handle<Object>(callback->data(), isolate())));
-  }
-  // TODO(jbramley): Find another scratch register and combine the pushes
-  // together. Can we use scratch1() here?
-  __ LoadRoot(scratch4(), Heap::kUndefinedValueRootIndex);
-  __ Push(scratch3(), scratch4());
-  __ Mov(scratch3(), ExternalReference::isolate_address(isolate()));
-  __ Push(scratch4(), scratch3(), reg, name());
-
-  Register args_addr = scratch2();
-  __ Add(args_addr, __ StackPointer(), kPointerSize);
-
-  // Stack at this point:
-  //              sp[40] callback data
-  //              sp[32] undefined
-  //              sp[24] undefined
-  //              sp[16] isolate
-  // args_addr -> sp[8]  reg
-  //              sp[0]  name
-
-  // Abi for CallApiGetter.
-  Register getter_address_reg = x2;
-
-  // Set up the call.
-  Address getter_address = v8::ToCData<Address>(callback->getter());
-  ApiFunction fun(getter_address);
-  ExternalReference::Type type = ExternalReference::DIRECT_GETTER_CALL;
-  ExternalReference ref = ExternalReference(&fun, type, isolate());
-  __ Mov(getter_address_reg, ref);
-
-  CallApiGetterStub stub;
-  __ TailCallStub(&stub);
-}
-
-
-void LoadStubCompiler::GenerateLoadInterceptor(
-    Register holder_reg,
-    Handle<Object> object,
-    Handle<JSObject> interceptor_holder,
-    LookupResult* lookup,
-    Handle<Name> name) {
-  ASSERT(!AreAliased(receiver(), this->name(),
-                     scratch1(), scratch2(), scratch3()));
-  ASSERT(interceptor_holder->HasNamedInterceptor());
-  ASSERT(!interceptor_holder->GetNamedInterceptor()->getter()->IsUndefined());
-
-  // So far the most popular follow ups for interceptor loads are FIELD
-  // and CALLBACKS, so inline only them, other cases may be added later.
-  bool compile_followup_inline = false;
-  if (lookup->IsFound() && lookup->IsCacheable()) {
-    if (lookup->IsField()) {
-      compile_followup_inline = true;
-    } else if (lookup->type() == CALLBACKS &&
-               lookup->GetCallbackObject()->IsExecutableAccessorInfo()) {
-      ExecutableAccessorInfo* callback =
-          ExecutableAccessorInfo::cast(lookup->GetCallbackObject());
-      compile_followup_inline = callback->getter() != NULL &&
-          callback->IsCompatibleReceiver(*object);
-    }
-  }
-
-  if (compile_followup_inline) {
-    // Compile the interceptor call, followed by inline code to load the
-    // property from further up the prototype chain if the call fails.
-    // Check that the maps haven't changed.
-    ASSERT(holder_reg.is(receiver()) || holder_reg.is(scratch1()));
-
-    // Preserve the receiver register explicitly whenever it is different from
-    // the holder and it is needed should the interceptor return without any
-    // result. The CALLBACKS case needs the receiver to be passed into C++ code,
-    // the FIELD case might cause a miss during the prototype check.
-    bool must_perfrom_prototype_check = *interceptor_holder != lookup->holder();
-    bool must_preserve_receiver_reg = !receiver().Is(holder_reg) &&
-        (lookup->type() == CALLBACKS || must_perfrom_prototype_check);
-
-    // Save necessary data before invoking an interceptor.
-    // Requires a frame to make GC aware of pushed pointers.
-    {
-      FrameScope frame_scope(masm(), StackFrame::INTERNAL);
-      if (must_preserve_receiver_reg) {
-        __ Push(receiver(), holder_reg, this->name());
-      } else {
-        __ Push(holder_reg, this->name());
-      }
-      // Invoke an interceptor.  Note: map checks from receiver to
-      // interceptor's holder has been compiled before (see a caller
-      // of this method.)
-      CompileCallLoadPropertyWithInterceptor(
-          masm(), receiver(), holder_reg, this->name(), interceptor_holder,
-          IC::kLoadPropertyWithInterceptorOnly);
-
-      // Check if interceptor provided a value for property.  If it's
-      // the case, return immediately.
-      Label interceptor_failed;
-      __ JumpIfRoot(x0,
-                    Heap::kNoInterceptorResultSentinelRootIndex,
-                    &interceptor_failed);
-      frame_scope.GenerateLeaveFrame();
-      __ Ret();
-
-      __ Bind(&interceptor_failed);
-      if (must_preserve_receiver_reg) {
-        __ Pop(this->name(), holder_reg, receiver());
-      } else {
-        __ Pop(this->name(), holder_reg);
-      }
-      // Leave the internal frame.
-    }
-    GenerateLoadPostInterceptor(holder_reg, interceptor_holder, name, lookup);
-  } else {  // !compile_followup_inline
-    // Call the runtime system to load the interceptor.
-    // Check that the maps haven't changed.
-    PushInterceptorArguments(
-        masm(), receiver(), holder_reg, this->name(), interceptor_holder);
-
-    ExternalReference ref =
-        ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorForLoad),
-                          isolate());
-    __ TailCallExternalReference(ref, StubCache::kInterceptorArgsLength, 1);
-  }
-}
-
-
-void StubCompiler::GenerateBooleanCheck(Register object, Label* miss) {
-  UseScratchRegisterScope temps(masm());
-  // Check that the object is a boolean.
-  Register true_root = temps.AcquireX();
-  Register false_root = temps.AcquireX();
-  ASSERT(!AreAliased(object, true_root, false_root));
-  __ LoadTrueFalseRoots(true_root, false_root);
-  __ Cmp(object, true_root);
-  __ Ccmp(object, false_root, ZFlag, ne);
-  __ B(ne, miss);
-}
-
-
-Handle<Code> StoreStubCompiler::CompileStoreCallback(
-    Handle<JSObject> object,
-    Handle<JSObject> holder,
-    Handle<Name> name,
-    Handle<ExecutableAccessorInfo> callback) {
-  ASM_LOCATION("StoreStubCompiler::CompileStoreCallback");
-  Register holder_reg = HandlerFrontend(
-      IC::CurrentTypeOf(object, isolate()), receiver(), holder, name);
-
-  // Stub never generated for non-global objects that require access checks.
-  ASSERT(holder->IsJSGlobalProxy() || !holder->IsAccessCheckNeeded());
-
-  // receiver() and holder_reg can alias.
-  ASSERT(!AreAliased(receiver(), scratch1(), scratch2(), value()));
-  ASSERT(!AreAliased(holder_reg, scratch1(), scratch2(), value()));
-  __ Mov(scratch1(), Operand(callback));
-  __ Mov(scratch2(), Operand(name));
-  __ Push(receiver(), holder_reg, scratch1(), scratch2(), value());
-
-  // Do tail-call to the runtime system.
-  ExternalReference store_callback_property =
-      ExternalReference(IC_Utility(IC::kStoreCallbackProperty), isolate());
-  __ TailCallExternalReference(store_callback_property, 5, 1);
-
-  // Return the generated code.
-  return GetCode(kind(), Code::FAST, name);
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm)
-
-
-void StoreStubCompiler::GenerateStoreViaSetter(
-    MacroAssembler* masm,
-    Handle<HeapType> type,
-    Register receiver,
-    Handle<JSFunction> setter) {
-  // ----------- S t a t e -------------
-  //  -- lr    : return address
-  // -----------------------------------
-  Label miss;
-
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    // Save value register, so we can restore it later.
-    __ Push(value());
-
-    if (!setter.is_null()) {
-      // Call the JavaScript setter with receiver and value on the stack.
-      if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
-        // Swap in the global receiver.
-        __ Ldr(receiver,
-               FieldMemOperand(
-                   receiver, JSGlobalObject::kGlobalReceiverOffset));
-      }
-      __ Push(receiver, value());
-      ParameterCount actual(1);
-      ParameterCount expected(setter);
-      __ InvokeFunction(setter, expected, actual,
-                        CALL_FUNCTION, NullCallWrapper());
-    } else {
-      // If we generate a global code snippet for deoptimization only, remember
-      // the place to continue after deoptimization.
-      masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
-    }
-
-    // We have to return the passed value, not the return value of the setter.
-    __ Pop(x0);
-
-    // Restore context register.
-    __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-  }
-  __ Ret();
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm())
-
-
-Handle<Code> StoreStubCompiler::CompileStoreInterceptor(
-    Handle<JSObject> object,
-    Handle<Name> name) {
-  Label miss;
-
-  ASM_LOCATION("StoreStubCompiler::CompileStoreInterceptor");
-
-  __ Push(receiver(), this->name(), value());
-
-  // Do tail-call to the runtime system.
-  ExternalReference store_ic_property =
-      ExternalReference(IC_Utility(IC::kStoreInterceptorProperty), isolate());
-  __ TailCallExternalReference(store_ic_property, 3, 1);
-
-  // Return the generated code.
-  return GetCode(kind(), Code::FAST, name);
-}
-
-
-Handle<Code> LoadStubCompiler::CompileLoadNonexistent(Handle<HeapType> type,
-                                                      Handle<JSObject> last,
-                                                      Handle<Name> name) {
-  NonexistentHandlerFrontend(type, last, name);
-
-  // Return undefined if maps of the full prototype chain are still the
-  // same and no global property with this name contains a value.
-  __ LoadRoot(x0, Heap::kUndefinedValueRootIndex);
-  __ Ret();
-
-  // Return the generated code.
-  return GetCode(kind(), Code::FAST, name);
-}
-
-
-// TODO(all): The so-called scratch registers are significant in some cases. For
-// example, KeyedStoreStubCompiler::registers()[3] (x3) is actually used for
-// KeyedStoreCompiler::transition_map(). We should verify which registers are
-// actually scratch registers, and which are important. For now, we use the same
-// assignments as ARM to remain on the safe side.
-
-Register* LoadStubCompiler::registers() {
-  // receiver, name, scratch1, scratch2, scratch3, scratch4.
-  static Register registers[] = { x0, x2, x3, x1, x4, x5 };
-  return registers;
-}
-
-
-Register* KeyedLoadStubCompiler::registers() {
-  // receiver, name/key, scratch1, scratch2, scratch3, scratch4.
-  static Register registers[] = { x1, x0, x2, x3, x4, x5 };
-  return registers;
-}
-
-
-Register StoreStubCompiler::value() {
-  return x0;
-}
-
-
-Register* StoreStubCompiler::registers() {
-  // receiver, value, scratch1, scratch2, scratch3.
-  static Register registers[] = { x1, x2, x3, x4, x5 };
-  return registers;
-}
-
-
-Register* KeyedStoreStubCompiler::registers() {
-  // receiver, name, scratch1, scratch2, scratch3.
-  static Register registers[] = { x2, x1, x3, x4, x5 };
-  return registers;
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm)
-
-void LoadStubCompiler::GenerateLoadViaGetter(MacroAssembler* masm,
-                                             Handle<HeapType> type,
-                                             Register receiver,
-                                             Handle<JSFunction> getter) {
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-
-    if (!getter.is_null()) {
-      // Call the JavaScript getter with the receiver on the stack.
-      if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
-        // Swap in the global receiver.
-        __ Ldr(receiver,
-                FieldMemOperand(
-                    receiver, JSGlobalObject::kGlobalReceiverOffset));
-      }
-      __ Push(receiver);
-      ParameterCount actual(0);
-      ParameterCount expected(getter);
-      __ InvokeFunction(getter, expected, actual,
-                        CALL_FUNCTION, NullCallWrapper());
-    } else {
-      // If we generate a global code snippet for deoptimization only, remember
-      // the place to continue after deoptimization.
-      masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
-    }
-
-    // Restore context register.
-    __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-  }
-  __ Ret();
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm())
-
-
-Handle<Code> LoadStubCompiler::CompileLoadGlobal(
-    Handle<HeapType> type,
-    Handle<GlobalObject> global,
-    Handle<PropertyCell> cell,
-    Handle<Name> name,
-    bool is_dont_delete) {
-  Label miss;
-  HandlerFrontendHeader(type, receiver(), global, name, &miss);
-
-  // Get the value from the cell.
-  __ Mov(x3, Operand(cell));
-  __ Ldr(x4, FieldMemOperand(x3, Cell::kValueOffset));
-
-  // Check for deleted property if property can actually be deleted.
-  if (!is_dont_delete) {
-    __ JumpIfRoot(x4, Heap::kTheHoleValueRootIndex, &miss);
-  }
-
-  Counters* counters = isolate()->counters();
-  __ IncrementCounter(counters->named_load_global_stub(), 1, x1, x3);
-  __ Mov(x0, x4);
-  __ Ret();
-
-  HandlerFrontendFooter(name, &miss);
-
-  // Return the generated code.
-  return GetCode(kind(), Code::NORMAL, name);
-}
-
-
-Handle<Code> BaseLoadStoreStubCompiler::CompilePolymorphicIC(
-    TypeHandleList* types,
-    CodeHandleList* handlers,
-    Handle<Name> name,
-    Code::StubType type,
-    IcCheckType check) {
-  Label miss;
-
-  if (check == PROPERTY &&
-      (kind() == Code::KEYED_LOAD_IC || kind() == Code::KEYED_STORE_IC)) {
-    __ CompareAndBranch(this->name(), Operand(name), ne, &miss);
-  }
-
-  Label number_case;
-  Label* smi_target = IncludesNumberType(types) ? &number_case : &miss;
-  __ JumpIfSmi(receiver(), smi_target);
-
-  Register map_reg = scratch1();
-  __ Ldr(map_reg, FieldMemOperand(receiver(), HeapObject::kMapOffset));
-  int receiver_count = types->length();
-  int number_of_handled_maps = 0;
-  for (int current = 0; current < receiver_count; ++current) {
-    Handle<HeapType> type = types->at(current);
-    Handle<Map> map = IC::TypeToMap(*type, isolate());
-    if (!map->is_deprecated()) {
-      number_of_handled_maps++;
-      Label try_next;
-      __ Cmp(map_reg, Operand(map));
-      __ B(ne, &try_next);
-      if (type->Is(HeapType::Number())) {
-        ASSERT(!number_case.is_unused());
-        __ Bind(&number_case);
-      }
-      __ Jump(handlers->at(current), RelocInfo::CODE_TARGET);
-      __ Bind(&try_next);
-    }
-  }
-  ASSERT(number_of_handled_maps != 0);
-
-  __ Bind(&miss);
-  TailCallBuiltin(masm(), MissBuiltin(kind()));
-
-  // Return the generated code.
-  InlineCacheState state =
-      (number_of_handled_maps > 1) ? POLYMORPHIC : MONOMORPHIC;
-  return GetICCode(kind(), type, name, state);
-}
-
-
-void StoreStubCompiler::GenerateStoreArrayLength() {
-  // Prepare tail call to StoreIC_ArrayLength.
-  __ Push(receiver(), value());
-
-  ExternalReference ref =
-      ExternalReference(IC_Utility(IC::kStoreIC_ArrayLength),
-                        masm()->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
-}
-
-
-Handle<Code> KeyedStoreStubCompiler::CompileStorePolymorphic(
-    MapHandleList* receiver_maps,
-    CodeHandleList* handler_stubs,
-    MapHandleList* transitioned_maps) {
-  Label miss;
-
-  ASM_LOCATION("KeyedStoreStubCompiler::CompileStorePolymorphic");
-
-  __ JumpIfSmi(receiver(), &miss);
-
-  int receiver_count = receiver_maps->length();
-  __ Ldr(scratch1(), FieldMemOperand(receiver(), HeapObject::kMapOffset));
-  for (int i = 0; i < receiver_count; i++) {
-    __ Cmp(scratch1(), Operand(receiver_maps->at(i)));
-
-    Label skip;
-    __ B(&skip, ne);
-    if (!transitioned_maps->at(i).is_null()) {
-      // This argument is used by the handler stub. For example, see
-      // ElementsTransitionGenerator::GenerateMapChangeElementsTransition.
-      __ Mov(transition_map(), Operand(transitioned_maps->at(i)));
-    }
-    __ Jump(handler_stubs->at(i), RelocInfo::CODE_TARGET);
-    __ Bind(&skip);
-  }
-
-  __ Bind(&miss);
-  TailCallBuiltin(masm(), MissBuiltin(kind()));
-
-  return GetICCode(
-      kind(), Code::NORMAL, factory()->empty_string(), POLYMORPHIC);
-}
-
-
-#undef __
-#define __ ACCESS_MASM(masm)
-
-void KeyedLoadStubCompiler::GenerateLoadDictionaryElement(
-    MacroAssembler* masm) {
-  // ---------- S t a t e --------------
-  //  -- lr     : return address
-  //  -- x0     : key
-  //  -- x1     : receiver
-  // -----------------------------------
-  Label slow, miss;
-
-  Register result = x0;
-  Register key = x0;
-  Register receiver = x1;
-
-  __ JumpIfNotSmi(key, &miss);
-  __ Ldr(x4, FieldMemOperand(receiver, JSObject::kElementsOffset));
-  __ LoadFromNumberDictionary(&slow, x4, key, result, x2, x3, x5, x6);
-  __ Ret();
-
-  __ Bind(&slow);
-  __ IncrementCounter(
-      masm->isolate()->counters()->keyed_load_external_array_slow(), 1, x2, x3);
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Slow);
-
-  // Miss case, call the runtime.
-  __ Bind(&miss);
-  TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
-}
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_TARGET_ARCH_A64