[refactoring] Pull AccessorAssembler out of CodeStubAssembler

src/code-stub-assembler.cc

Index: src/code-stub-assembler.cc
diff --git a/src/code-stub-assembler.cc b/src/code-stub-assembler.cc
index dac2939e991c59a5f54fc979d6872d4ec0f2b3a3..ce76b7132685b87b28a9a0a3feef884cceaa7919 100644
--- a/src/code-stub-assembler.cc
+++ b/src/code-stub-assembler.cc
@@ -5,8 +5,6 @@
 #include "src/code-factory.h"
 #include "src/frames-inl.h"
 #include "src/frames.h"
-#include "src/ic/handler-configuration.h"
-#include "src/ic/stub-cache.h"
 
 namespace v8 {
 namespace internal {
@@ -4024,6 +4022,8 @@ Node* CodeStubAssembler::EntryToIndex(Node* entry, int field_index) {
 
 template Node* CodeStubAssembler::EntryToIndex<NameDictionary>(Node*, int);
 template Node* CodeStubAssembler::EntryToIndex<GlobalDictionary>(Node*, int);
+template Node* CodeStubAssembler::EntryToIndex<SeededNumberDictionary>(Node*,
+                                                                       int);
 
 Node* CodeStubAssembler::HashTableComputeCapacity(Node* at_least_space_for) {
   Node* capacity = IntPtrRoundUpToPowerOfTwo32(
@@ -5006,242 +5006,6 @@ compiler::Node* CodeStubAssembler::LoadReceiverMap(compiler::Node* receiver) {
   return var_receiver_map.value();
 }
 
-compiler::Node* CodeStubAssembler::TryMonomorphicCase(
-    compiler::Node* slot, compiler::Node* vector, compiler::Node* receiver_map,
-    Label* if_handler, Variable* var_handler, Label* if_miss) {
-  Comment("TryMonomorphicCase");
-  DCHECK_EQ(MachineRepresentation::kTagged, var_handler->rep());
-
-  // TODO(ishell): add helper class that hides offset computations for a series
-  // of loads.
-  int32_t header_size = FixedArray::kHeaderSize - kHeapObjectTag;
-  // Adding |header_size| with a separate IntPtrAdd rather than passing it
-  // into ElementOffsetFromIndex() allows it to be folded into a single
-  // [base, index, offset] indirect memory access on x64.
-  Node* offset =
-      ElementOffsetFromIndex(slot, FAST_HOLEY_ELEMENTS, SMI_PARAMETERS);
-  Node* feedback = Load(MachineType::AnyTagged(), vector,
-                        IntPtrAdd(offset, IntPtrConstant(header_size)));
-
-  // Try to quickly handle the monomorphic case without knowing for sure
-  // if we have a weak cell in feedback. We do know it's safe to look
-  // at WeakCell::kValueOffset.
-  GotoIf(WordNotEqual(receiver_map, LoadWeakCellValueUnchecked(feedback)),
-         if_miss);
-
-  Node* handler =
-      Load(MachineType::AnyTagged(), vector,
-           IntPtrAdd(offset, IntPtrConstant(header_size + kPointerSize)));
-
-  var_handler->Bind(handler);
-  Goto(if_handler);
-  return feedback;
-}
-
-void CodeStubAssembler::HandlePolymorphicCase(
-    compiler::Node* receiver_map, compiler::Node* feedback, Label* if_handler,
-    Variable* var_handler, Label* if_miss, int unroll_count) {
-  Comment("HandlePolymorphicCase");
-  DCHECK_EQ(MachineRepresentation::kTagged, var_handler->rep());
-
-  // Iterate {feedback} array.
-  const int kEntrySize = 2;
-
-  for (int i = 0; i < unroll_count; i++) {
-    Label next_entry(this);
-    Node* cached_map = LoadWeakCellValue(LoadFixedArrayElement(
-        feedback, IntPtrConstant(i * kEntrySize), 0, INTPTR_PARAMETERS));
-    GotoIf(WordNotEqual(receiver_map, cached_map), &next_entry);
-
-    // Found, now call handler.
-    Node* handler = LoadFixedArrayElement(
-        feedback, IntPtrConstant(i * kEntrySize + 1), 0, INTPTR_PARAMETERS);
-    var_handler->Bind(handler);
-    Goto(if_handler);
-
-    Bind(&next_entry);
-  }
-
-  // Loop from {unroll_count}*kEntrySize to {length}.
-  Node* init = IntPtrConstant(unroll_count * kEntrySize);
-  Node* length = LoadAndUntagFixedArrayBaseLength(feedback);
-  BuildFastLoop(
-      MachineType::PointerRepresentation(), init, length,
-      [receiver_map, feedback, if_handler, var_handler](CodeStubAssembler* csa,
-                                                        Node* index) {
-        Node* cached_map = csa->LoadWeakCellValue(
-            csa->LoadFixedArrayElement(feedback, index, 0, INTPTR_PARAMETERS));
-
-        Label next_entry(csa);
-        csa->GotoIf(csa->WordNotEqual(receiver_map, cached_map), &next_entry);
-
-        // Found, now call handler.
-        Node* handler = csa->LoadFixedArrayElement(
-            feedback, index, kPointerSize, INTPTR_PARAMETERS);
-        var_handler->Bind(handler);
-        csa->Goto(if_handler);
-
-        csa->Bind(&next_entry);
-      },
-      kEntrySize, IndexAdvanceMode::kPost);
-  // The loop falls through if no handler was found.
-  Goto(if_miss);
-}
-
-void CodeStubAssembler::HandleKeyedStorePolymorphicCase(
-    compiler::Node* receiver_map, compiler::Node* feedback, Label* if_handler,
-    Variable* var_handler, Label* if_transition_handler,
-    Variable* var_transition_map_cell, Label* if_miss) {
-  DCHECK_EQ(MachineRepresentation::kTagged, var_handler->rep());
-  DCHECK_EQ(MachineRepresentation::kTagged, var_transition_map_cell->rep());
-
-  const int kEntrySize = 3;
-
-  Node* init = IntPtrConstant(0);
-  Node* length = LoadAndUntagFixedArrayBaseLength(feedback);
-  BuildFastLoop(
-      MachineType::PointerRepresentation(), init, length,
-      [receiver_map, feedback, if_handler, var_handler, if_transition_handler,
-       var_transition_map_cell](CodeStubAssembler* csa, Node* index) {
-        Node* cached_map = csa->LoadWeakCellValue(
-            csa->LoadFixedArrayElement(feedback, index, 0, INTPTR_PARAMETERS));
-        Label next_entry(csa);
-        csa->GotoIf(csa->WordNotEqual(receiver_map, cached_map), &next_entry);
-
-        Node* maybe_transition_map_cell = csa->LoadFixedArrayElement(
-            feedback, index, kPointerSize, INTPTR_PARAMETERS);
-
-        var_handler->Bind(csa->LoadFixedArrayElement(
-            feedback, index, 2 * kPointerSize, INTPTR_PARAMETERS));
-        csa->GotoIf(
-            csa->WordEqual(maybe_transition_map_cell,
-                           csa->LoadRoot(Heap::kUndefinedValueRootIndex)),
-            if_handler);
-        var_transition_map_cell->Bind(maybe_transition_map_cell);
-        csa->Goto(if_transition_handler);
-
-        csa->Bind(&next_entry);
-      },
-      kEntrySize, IndexAdvanceMode::kPost);
-  // The loop falls through if no handler was found.
-  Goto(if_miss);
-}
-
-compiler::Node* CodeStubAssembler::StubCachePrimaryOffset(compiler::Node* name,
-                                                          compiler::Node* map) {
-  // See v8::internal::StubCache::PrimaryOffset().
-  STATIC_ASSERT(StubCache::kCacheIndexShift == Name::kHashShift);
-  // Compute the hash of the name (use entire hash field).
-  Node* hash_field = LoadNameHashField(name);
-  CSA_ASSERT(this,
-             Word32Equal(Word32And(hash_field,
-                                   Int32Constant(Name::kHashNotComputedMask)),
-                         Int32Constant(0)));
-
-  // Using only the low bits in 64-bit mode is unlikely to increase the
-  // risk of collision even if the heap is spread over an area larger than
-  // 4Gb (and not at all if it isn't).
-  Node* hash = Int32Add(hash_field, map);
-  // Base the offset on a simple combination of name and map.
-  hash = Word32Xor(hash, Int32Constant(StubCache::kPrimaryMagic));
-  uint32_t mask = (StubCache::kPrimaryTableSize - 1)
-                  << StubCache::kCacheIndexShift;
-  return ChangeUint32ToWord(Word32And(hash, Int32Constant(mask)));
-}
-
-compiler::Node* CodeStubAssembler::StubCacheSecondaryOffset(
-    compiler::Node* name, compiler::Node* seed) {
-  // See v8::internal::StubCache::SecondaryOffset().
-
-  // Use the seed from the primary cache in the secondary cache.
-  Node* hash = Int32Sub(seed, name);
-  hash = Int32Add(hash, Int32Constant(StubCache::kSecondaryMagic));
-  int32_t mask = (StubCache::kSecondaryTableSize - 1)
-                 << StubCache::kCacheIndexShift;
-  return ChangeUint32ToWord(Word32And(hash, Int32Constant(mask)));
-}
-
-enum CodeStubAssembler::StubCacheTable : int {
-  kPrimary = static_cast<int>(StubCache::kPrimary),
-  kSecondary = static_cast<int>(StubCache::kSecondary)
-};
-
-void CodeStubAssembler::TryProbeStubCacheTable(
-    StubCache* stub_cache, StubCacheTable table_id,
-    compiler::Node* entry_offset, compiler::Node* name, compiler::Node* map,
-    Label* if_handler, Variable* var_handler, Label* if_miss) {
-  StubCache::Table table = static_cast<StubCache::Table>(table_id);
-#ifdef DEBUG
-  if (FLAG_test_secondary_stub_cache && table == StubCache::kPrimary) {
-    Goto(if_miss);
-    return;
-  } else if (FLAG_test_primary_stub_cache && table == StubCache::kSecondary) {
-    Goto(if_miss);
-    return;
-  }
-#endif
-  // The {table_offset} holds the entry offset times four (due to masking
-  // and shifting optimizations).
-  const int kMultiplier = sizeof(StubCache::Entry) >> Name::kHashShift;
-  entry_offset = IntPtrMul(entry_offset, IntPtrConstant(kMultiplier));
-
-  // Check that the key in the entry matches the name.
-  Node* key_base =
-      ExternalConstant(ExternalReference(stub_cache->key_reference(table)));
-  Node* entry_key = Load(MachineType::Pointer(), key_base, entry_offset);
-  GotoIf(WordNotEqual(name, entry_key), if_miss);
-
-  // Get the map entry from the cache.
-  DCHECK_EQ(kPointerSize * 2, stub_cache->map_reference(table).address() -
-                                  stub_cache->key_reference(table).address());
-  Node* entry_map =
-      Load(MachineType::Pointer(), key_base,
-           IntPtrAdd(entry_offset, IntPtrConstant(kPointerSize * 2)));
-  GotoIf(WordNotEqual(map, entry_map), if_miss);
-
-  DCHECK_EQ(kPointerSize, stub_cache->value_reference(table).address() -
-                              stub_cache->key_reference(table).address());
-  Node* handler = Load(MachineType::TaggedPointer(), key_base,
-                       IntPtrAdd(entry_offset, IntPtrConstant(kPointerSize)));
-
-  // We found the handler.
-  var_handler->Bind(handler);
-  Goto(if_handler);
-}
-
-void CodeStubAssembler::TryProbeStubCache(
-    StubCache* stub_cache, compiler::Node* receiver, compiler::Node* name,
-    Label* if_handler, Variable* var_handler, Label* if_miss) {
-  Label try_secondary(this), miss(this);
-
-  Counters* counters = isolate()->counters();
-  IncrementCounter(counters->megamorphic_stub_cache_probes(), 1);
-
-  // Check that the {receiver} isn't a smi.
-  GotoIf(TaggedIsSmi(receiver), &miss);
-
-  Node* receiver_map = LoadMap(receiver);
-
-  // Probe the primary table.
-  Node* primary_offset = StubCachePrimaryOffset(name, receiver_map);
-  TryProbeStubCacheTable(stub_cache, kPrimary, primary_offset, name,
-                         receiver_map, if_handler, var_handler, &try_secondary);
-
-  Bind(&try_secondary);
-  {
-    // Probe the secondary table.
-    Node* secondary_offset = StubCacheSecondaryOffset(name, primary_offset);
-    TryProbeStubCacheTable(stub_cache, kSecondary, secondary_offset, name,
-                           receiver_map, if_handler, var_handler, &miss);
-  }
-
-  Bind(&miss);
-  {
-    IncrementCounter(counters->megamorphic_stub_cache_misses(), 1);
-    Goto(if_miss);
-  }
-}
-
 Node* CodeStubAssembler::TryToIntptr(Node* key, Label* miss) {
   Variable var_intptr_key(this, MachineType::PointerRepresentation());
   Label done(this, &var_intptr_key), key_is_smi(this);
@@ -5266,1280 +5030,6 @@ Node* CodeStubAssembler::TryToIntptr(Node* key, Label* miss) {
   return var_intptr_key.value();
 }
 
-void CodeStubAssembler::EmitFastElementsBoundsCheck(Node* object,
-                                                    Node* elements,
-                                                    Node* intptr_index,
-                                                    Node* is_jsarray_condition,
-                                                    Label* miss) {
-  Variable var_length(this, MachineType::PointerRepresentation());
-  Comment("Fast elements bounds check");
-  Label if_array(this), length_loaded(this, &var_length);
-  GotoIf(is_jsarray_condition, &if_array);
-  {
-    var_length.Bind(SmiUntag(LoadFixedArrayBaseLength(elements)));
-    Goto(&length_loaded);
-  }
-  Bind(&if_array);
-  {
-    var_length.Bind(SmiUntag(LoadJSArrayLength(object)));
-    Goto(&length_loaded);
-  }
-  Bind(&length_loaded);
-  GotoUnless(UintPtrLessThan(intptr_index, var_length.value()), miss);
-}
-
-void CodeStubAssembler::EmitElementLoad(Node* object, Node* elements,
-                                        Node* elements_kind, Node* intptr_index,
-                                        Node* is_jsarray_condition,
-                                        Label* if_hole, Label* rebox_double,
-                                        Variable* var_double_value,
-                                        Label* unimplemented_elements_kind,
-                                        Label* out_of_bounds, Label* miss) {
-  Label if_typed_array(this), if_fast_packed(this), if_fast_holey(this),
-      if_fast_double(this), if_fast_holey_double(this), if_nonfast(this),
-      if_dictionary(this);
-  GotoIf(
-      IntPtrGreaterThan(elements_kind, IntPtrConstant(LAST_FAST_ELEMENTS_KIND)),
-      &if_nonfast);
-
-  EmitFastElementsBoundsCheck(object, elements, intptr_index,
-                              is_jsarray_condition, out_of_bounds);
-  int32_t kinds[] = {// Handled by if_fast_packed.
-                     FAST_SMI_ELEMENTS, FAST_ELEMENTS,
-                     // Handled by if_fast_holey.
-                     FAST_HOLEY_SMI_ELEMENTS, FAST_HOLEY_ELEMENTS,
-                     // Handled by if_fast_double.
-                     FAST_DOUBLE_ELEMENTS,
-                     // Handled by if_fast_holey_double.
-                     FAST_HOLEY_DOUBLE_ELEMENTS};
-  Label* labels[] = {// FAST_{SMI,}_ELEMENTS
-                     &if_fast_packed, &if_fast_packed,
-                     // FAST_HOLEY_{SMI,}_ELEMENTS
-                     &if_fast_holey, &if_fast_holey,
-                     // FAST_DOUBLE_ELEMENTS
-                     &if_fast_double,
-                     // FAST_HOLEY_DOUBLE_ELEMENTS
-                     &if_fast_holey_double};
-  Switch(elements_kind, unimplemented_elements_kind, kinds, labels,
-         arraysize(kinds));
-
-  Bind(&if_fast_packed);
-  {
-    Comment("fast packed elements");
-    Return(LoadFixedArrayElement(elements, intptr_index, 0, INTPTR_PARAMETERS));
-  }
-
-  Bind(&if_fast_holey);
-  {
-    Comment("fast holey elements");
-    Node* element =
-        LoadFixedArrayElement(elements, intptr_index, 0, INTPTR_PARAMETERS);
-    GotoIf(WordEqual(element, TheHoleConstant()), if_hole);
-    Return(element);
-  }
-
-  Bind(&if_fast_double);
-  {
-    Comment("packed double elements");
-    var_double_value->Bind(LoadFixedDoubleArrayElement(
-        elements, intptr_index, MachineType::Float64(), 0, INTPTR_PARAMETERS));
-    Goto(rebox_double);
-  }
-
-  Bind(&if_fast_holey_double);
-  {
-    Comment("holey double elements");
-    Node* value = LoadFixedDoubleArrayElement(elements, intptr_index,
-                                              MachineType::Float64(), 0,
-                                              INTPTR_PARAMETERS, if_hole);
-    var_double_value->Bind(value);
-    Goto(rebox_double);
-  }
-
-  Bind(&if_nonfast);
-  {
-    STATIC_ASSERT(LAST_ELEMENTS_KIND == LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND);
-    GotoIf(IntPtrGreaterThanOrEqual(
-               elements_kind,
-               IntPtrConstant(FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND)),
-           &if_typed_array);
-    GotoIf(IntPtrEqual(elements_kind, IntPtrConstant(DICTIONARY_ELEMENTS)),
-           &if_dictionary);
-    Goto(unimplemented_elements_kind);
-  }
-
-  Bind(&if_dictionary);
-  {
-    Comment("dictionary elements");
-    GotoIf(IntPtrLessThan(intptr_index, IntPtrConstant(0)), out_of_bounds);
-    Variable var_entry(this, MachineType::PointerRepresentation());
-    Label if_found(this);
-    NumberDictionaryLookup<SeededNumberDictionary>(
-        elements, intptr_index, &if_found, &var_entry, if_hole);
-    Bind(&if_found);
-    // Check that the value is a data property.
-    Node* details_index = EntryToIndex<SeededNumberDictionary>(
-        var_entry.value(), SeededNumberDictionary::kEntryDetailsIndex);
-    Node* details = SmiToWord32(
-        LoadFixedArrayElement(elements, details_index, 0, INTPTR_PARAMETERS));
-    Node* kind = DecodeWord32<PropertyDetails::KindField>(details);
-    // TODO(jkummerow): Support accessors without missing?
-    GotoUnless(Word32Equal(kind, Int32Constant(kData)), miss);
-    // Finally, load the value.
-    Node* value_index = EntryToIndex<SeededNumberDictionary>(
-        var_entry.value(), SeededNumberDictionary::kEntryValueIndex);
-    Return(LoadFixedArrayElement(elements, value_index, 0, INTPTR_PARAMETERS));
-  }
-
-  Bind(&if_typed_array);
-  {
-    Comment("typed elements");
-    // Check if buffer has been neutered.
-    Node* buffer = LoadObjectField(object, JSArrayBufferView::kBufferOffset);
-    Node* bitfield = LoadObjectField(buffer, JSArrayBuffer::kBitFieldOffset,
-                                     MachineType::Uint32());
-    Node* neutered_bit =
-        Word32And(bitfield, Int32Constant(JSArrayBuffer::WasNeutered::kMask));
-    GotoUnless(Word32Equal(neutered_bit, Int32Constant(0)), miss);
-
-    // Bounds check.
-    Node* length =
-        SmiUntag(LoadObjectField(object, JSTypedArray::kLengthOffset));
-    GotoUnless(UintPtrLessThan(intptr_index, length), out_of_bounds);
-
-    // Backing store = external_pointer + base_pointer.
-    Node* external_pointer =
-        LoadObjectField(elements, FixedTypedArrayBase::kExternalPointerOffset,
-                        MachineType::Pointer());
-    Node* base_pointer =
-        LoadObjectField(elements, FixedTypedArrayBase::kBasePointerOffset);
-    Node* backing_store = IntPtrAdd(external_pointer, base_pointer);
-
-    Label uint8_elements(this), int8_elements(this), uint16_elements(this),
-        int16_elements(this), uint32_elements(this), int32_elements(this),
-        float32_elements(this), float64_elements(this);
-    Label* elements_kind_labels[] = {
-        &uint8_elements,  &uint8_elements,   &int8_elements,
-        &uint16_elements, &int16_elements,   &uint32_elements,
-        &int32_elements,  &float32_elements, &float64_elements};
-    int32_t elements_kinds[] = {
-        UINT8_ELEMENTS,  UINT8_CLAMPED_ELEMENTS, INT8_ELEMENTS,
-        UINT16_ELEMENTS, INT16_ELEMENTS,         UINT32_ELEMENTS,
-        INT32_ELEMENTS,  FLOAT32_ELEMENTS,       FLOAT64_ELEMENTS};
-    const size_t kTypedElementsKindCount =
-        LAST_FIXED_TYPED_ARRAY_ELEMENTS_KIND -
-        FIRST_FIXED_TYPED_ARRAY_ELEMENTS_KIND + 1;
-    DCHECK_EQ(kTypedElementsKindCount, arraysize(elements_kinds));
-    DCHECK_EQ(kTypedElementsKindCount, arraysize(elements_kind_labels));
-    Switch(elements_kind, miss, elements_kinds, elements_kind_labels,
-           kTypedElementsKindCount);
-    Bind(&uint8_elements);
-    {
-      Comment("UINT8_ELEMENTS");  // Handles UINT8_CLAMPED_ELEMENTS too.
-      Return(SmiTag(Load(MachineType::Uint8(), backing_store, intptr_index)));
-    }
-    Bind(&int8_elements);
-    {
-      Comment("INT8_ELEMENTS");
-      Return(SmiTag(Load(MachineType::Int8(), backing_store, intptr_index)));
-    }
-    Bind(&uint16_elements);
-    {
-      Comment("UINT16_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(1));
-      Return(SmiTag(Load(MachineType::Uint16(), backing_store, index)));
-    }
-    Bind(&int16_elements);
-    {
-      Comment("INT16_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(1));
-      Return(SmiTag(Load(MachineType::Int16(), backing_store, index)));
-    }
-    Bind(&uint32_elements);
-    {
-      Comment("UINT32_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(2));
-      Node* element = Load(MachineType::Uint32(), backing_store, index);
-      Return(ChangeUint32ToTagged(element));
-    }
-    Bind(&int32_elements);
-    {
-      Comment("INT32_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(2));
-      Node* element = Load(MachineType::Int32(), backing_store, index);
-      Return(ChangeInt32ToTagged(element));
-    }
-    Bind(&float32_elements);
-    {
-      Comment("FLOAT32_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(2));
-      Node* element = Load(MachineType::Float32(), backing_store, index);
-      var_double_value->Bind(ChangeFloat32ToFloat64(element));
-      Goto(rebox_double);
-    }
-    Bind(&float64_elements);
-    {
-      Comment("FLOAT64_ELEMENTS");
-      Node* index = WordShl(intptr_index, IntPtrConstant(3));
-      Node* element = Load(MachineType::Float64(), backing_store, index);
-      var_double_value->Bind(element);
-      Goto(rebox_double);
-    }
-  }
-}
-
-void CodeStubAssembler::HandleLoadICHandlerCase(
-    const LoadICParameters* p, Node* handler, Label* miss,
-    ElementSupport support_elements) {
-  Comment("have_handler");
-  Variable var_holder(this, MachineRepresentation::kTagged);
-  var_holder.Bind(p->receiver);
-  Variable var_smi_handler(this, MachineRepresentation::kTagged);
-  var_smi_handler.Bind(handler);
-
-  Variable* vars[] = {&var_holder, &var_smi_handler};
-  Label if_smi_handler(this, 2, vars);
-  Label try_proto_handler(this), call_handler(this);
-
-  Branch(TaggedIsSmi(handler), &if_smi_handler, &try_proto_handler);
-
-  // |handler| is a Smi, encoding what to do. See SmiHandler methods
-  // for the encoding format.
-  Bind(&if_smi_handler);
-  {
-    HandleLoadICSmiHandlerCase(p, var_holder.value(), var_smi_handler.value(),
-                               miss, support_elements);
-  }
-
-  Bind(&try_proto_handler);
-  {
-    GotoIf(IsCodeMap(LoadMap(handler)), &call_handler);
-    HandleLoadICProtoHandler(p, handler, &var_holder, &var_smi_handler,
-                             &if_smi_handler, miss);
-  }
-
-  Bind(&call_handler);
-  {
-    typedef LoadWithVectorDescriptor Descriptor;
-    TailCallStub(Descriptor(isolate()), handler, p->context,
-                 Arg(Descriptor::kReceiver, p->receiver),
-                 Arg(Descriptor::kName, p->name),
-                 Arg(Descriptor::kSlot, p->slot),
-                 Arg(Descriptor::kVector, p->vector));
-  }
-}
-
-void CodeStubAssembler::HandleLoadICSmiHandlerCase(
-    const LoadICParameters* p, Node* holder, Node* smi_handler, Label* miss,
-    ElementSupport support_elements) {
-  Variable var_double_value(this, MachineRepresentation::kFloat64);
-  Label rebox_double(this, &var_double_value);
-
-  Node* handler_word = SmiUntag(smi_handler);
-  Node* handler_kind = DecodeWord<LoadHandler::KindBits>(handler_word);
-  if (support_elements == kSupportElements) {
-    Label property(this);
-    GotoUnless(
-        WordEqual(handler_kind, IntPtrConstant(LoadHandler::kForElements)),
-        &property);
-
-    Comment("element_load");
-    Node* intptr_index = TryToIntptr(p->name, miss);
-    Node* elements = LoadElements(holder);
-    Node* is_jsarray_condition =
-        IsSetWord<LoadHandler::IsJsArrayBits>(handler_word);
-    Node* elements_kind =
-        DecodeWord<LoadHandler::ElementsKindBits>(handler_word);
-    Label if_hole(this), unimplemented_elements_kind(this);
-    Label* out_of_bounds = miss;
-    EmitElementLoad(holder, elements, elements_kind, intptr_index,
-                    is_jsarray_condition, &if_hole, &rebox_double,
-                    &var_double_value, &unimplemented_elements_kind,
-                    out_of_bounds, miss);
-
-    Bind(&unimplemented_elements_kind);
-    {
-      // Smi handlers should only be installed for supported elements kinds.
-      // Crash if we get here.
-      DebugBreak();
-      Goto(miss);
-    }
-
-    Bind(&if_hole);
-    {
-      Comment("convert hole");
-      GotoUnless(IsSetWord<LoadHandler::ConvertHoleBits>(handler_word), miss);
-      Node* protector_cell = LoadRoot(Heap::kArrayProtectorRootIndex);
-      DCHECK(isolate()->heap()->array_protector()->IsPropertyCell());
-      GotoUnless(
-          WordEqual(LoadObjectField(protector_cell, PropertyCell::kValueOffset),
-                    SmiConstant(Smi::FromInt(Isolate::kProtectorValid))),
-          miss);
-      Return(UndefinedConstant());
-    }
-
-    Bind(&property);
-    Comment("property_load");
-  }
-
-  Label constant(this), field(this);
-  Branch(WordEqual(handler_kind, IntPtrConstant(LoadHandler::kForFields)),
-         &field, &constant);
-
-  Bind(&field);
-  {
-    Comment("field_load");
-    Node* offset = DecodeWord<LoadHandler::FieldOffsetBits>(handler_word);
-
-    Label inobject(this), out_of_object(this);
-    Branch(IsSetWord<LoadHandler::IsInobjectBits>(handler_word), &inobject,
-           &out_of_object);
-
-    Bind(&inobject);
-    {
-      Label is_double(this);
-      GotoIf(IsSetWord<LoadHandler::IsDoubleBits>(handler_word), &is_double);
-      Return(LoadObjectField(holder, offset));
-
-      Bind(&is_double);
-      if (FLAG_unbox_double_fields) {
-        var_double_value.Bind(
-            LoadObjectField(holder, offset, MachineType::Float64()));
-      } else {
-        Node* mutable_heap_number = LoadObjectField(holder, offset);
-        var_double_value.Bind(LoadHeapNumberValue(mutable_heap_number));
-      }
-      Goto(&rebox_double);
-    }
-
-    Bind(&out_of_object);
-    {
-      Label is_double(this);
-      Node* properties = LoadProperties(holder);
-      Node* value = LoadObjectField(properties, offset);
-      GotoIf(IsSetWord<LoadHandler::IsDoubleBits>(handler_word), &is_double);
-      Return(value);
-
-      Bind(&is_double);
-      var_double_value.Bind(LoadHeapNumberValue(value));
-      Goto(&rebox_double);
-    }
-
-    Bind(&rebox_double);
-    Return(AllocateHeapNumberWithValue(var_double_value.value()));
-  }
-
-  Bind(&constant);
-  {
-    Comment("constant_load");
-    Node* descriptors = LoadMapDescriptors(LoadMap(holder));
-    Node* descriptor =
-        DecodeWord<LoadHandler::DescriptorValueIndexBits>(handler_word);
-    CSA_ASSERT(this,
-               UintPtrLessThan(descriptor,
-                               LoadAndUntagFixedArrayBaseLength(descriptors)));
-    Node* value =
-        LoadFixedArrayElement(descriptors, descriptor, 0, INTPTR_PARAMETERS);
-
-    Label if_accessor_info(this);
-    GotoIf(IsSetWord<LoadHandler::IsAccessorInfoBits>(handler_word),
-           &if_accessor_info);
-    Return(value);
-
-    Bind(&if_accessor_info);
-    Callable callable = CodeFactory::ApiGetter(isolate());
-    TailCallStub(callable, p->context, p->receiver, holder, value);
-  }
-}
-
-void CodeStubAssembler::HandleLoadICProtoHandler(
-    const LoadICParameters* p, Node* handler, Variable* var_holder,
-    Variable* var_smi_handler, Label* if_smi_handler, Label* miss) {
-  DCHECK_EQ(MachineRepresentation::kTagged, var_holder->rep());
-  DCHECK_EQ(MachineRepresentation::kTagged, var_smi_handler->rep());
-
-  // IC dispatchers rely on these assumptions to be held.
-  STATIC_ASSERT(FixedArray::kLengthOffset == LoadHandler::kHolderCellOffset);
-  DCHECK_EQ(FixedArray::OffsetOfElementAt(LoadHandler::kSmiHandlerIndex),
-            LoadHandler::kSmiHandlerOffset);
-  DCHECK_EQ(FixedArray::OffsetOfElementAt(LoadHandler::kValidityCellIndex),
-            LoadHandler::kValidityCellOffset);
-
-  // Both FixedArray and Tuple3 handlers have validity cell at the same offset.
-  Label validity_cell_check_done(this);
-  Node* validity_cell =
-      LoadObjectField(handler, LoadHandler::kValidityCellOffset);
-  GotoIf(WordEqual(validity_cell, IntPtrConstant(0)),
-         &validity_cell_check_done);
-  Node* cell_value = LoadObjectField(validity_cell, Cell::kValueOffset);
-  GotoIf(WordNotEqual(cell_value,
-                      SmiConstant(Smi::FromInt(Map::kPrototypeChainValid))),
-         miss);
-  Goto(&validity_cell_check_done);
-
-  Bind(&validity_cell_check_done);
-  Node* smi_handler = LoadObjectField(handler, LoadHandler::kSmiHandlerOffset);
-  CSA_ASSERT(this, TaggedIsSmi(smi_handler));
-  Node* handler_flags = SmiUntag(smi_handler);
-
-  Label check_prototypes(this);
-  GotoUnless(
-      IsSetWord<LoadHandler::DoNegativeLookupOnReceiverBits>(handler_flags),
-      &check_prototypes);
-  {
-    // We have a dictionary receiver, do a negative lookup check.
-    NameDictionaryNegativeLookup(p->receiver, p->name, miss);
-    Goto(&check_prototypes);
-  }
-
-  Bind(&check_prototypes);
-  Node* maybe_holder_cell =
-      LoadObjectField(handler, LoadHandler::kHolderCellOffset);
-  Label array_handler(this), tuple_handler(this);
-  Branch(TaggedIsSmi(maybe_holder_cell), &array_handler, &tuple_handler);
-
-  Bind(&tuple_handler);
-  {
-    Label load_existent(this);
-    GotoIf(WordNotEqual(maybe_holder_cell, NullConstant()), &load_existent);
-    // This is a handler for a load of a non-existent value.
-    Return(UndefinedConstant());
-
-    Bind(&load_existent);
-    Node* holder = LoadWeakCellValue(maybe_holder_cell);
-    // The |holder| is guaranteed to be alive at this point since we passed
-    // both the receiver map check and the validity cell check.
-    CSA_ASSERT(this, WordNotEqual(holder, IntPtrConstant(0)));
-
-    var_holder->Bind(holder);
-    var_smi_handler->Bind(smi_handler);
-    Goto(if_smi_handler);
-  }
-
-  Bind(&array_handler);
-  {
-    typedef LoadICProtoArrayDescriptor Descriptor;
-    LoadICProtoArrayStub stub(isolate());
-    Node* target = HeapConstant(stub.GetCode());
-    TailCallStub(Descriptor(isolate()), target, p->context,
-                 Arg(Descriptor::kReceiver, p->receiver),
-                 Arg(Descriptor::kName, p->name),
-                 Arg(Descriptor::kSlot, p->slot),
-                 Arg(Descriptor::kVector, p->vector),
-                 Arg(Descriptor::kHandler, handler));
-  }
-}
-
-void CodeStubAssembler::LoadICProtoArray(const LoadICParameters* p,
-                                         Node* handler) {
-  Label miss(this);
-  CSA_ASSERT(this, Word32BinaryNot(TaggedIsSmi(handler)));
-  CSA_ASSERT(this, IsFixedArrayMap(LoadMap(handler)));
-
-  Node* smi_handler = LoadObjectField(handler, LoadHandler::kSmiHandlerOffset);
-  Node* handler_flags = SmiUntag(smi_handler);
-
-  Node* handler_length = LoadAndUntagFixedArrayBaseLength(handler);
-
-  Node* holder = EmitLoadICProtoArrayCheck(p, handler, handler_length,
-                                           handler_flags, &miss);
-
-  HandleLoadICSmiHandlerCase(p, holder, smi_handler, &miss, kOnlyProperties);
-
-  Bind(&miss);
-  {
-    TailCallRuntime(Runtime::kLoadIC_Miss, p->context, p->receiver, p->name,
-                    p->slot, p->vector);
-  }
-}
-
-Node* CodeStubAssembler::EmitLoadICProtoArrayCheck(const LoadICParameters* p,
-                                                   Node* handler,
-                                                   Node* handler_length,
-                                                   Node* handler_flags,
-                                                   Label* miss) {
-  Variable start_index(this, MachineType::PointerRepresentation());
-  start_index.Bind(IntPtrConstant(LoadHandler::kFirstPrototypeIndex));
-
-  Label can_access(this);
-  GotoUnless(IsSetWord<LoadHandler::DoAccessCheckOnReceiverBits>(handler_flags),
-             &can_access);
-  {
-    // Skip this entry of a handler.
-    start_index.Bind(IntPtrConstant(LoadHandler::kFirstPrototypeIndex + 1));
-
-    int offset =
-        FixedArray::OffsetOfElementAt(LoadHandler::kFirstPrototypeIndex);
-    Node* expected_native_context =
-        LoadWeakCellValue(LoadObjectField(handler, offset), miss);
-    CSA_ASSERT(this, IsNativeContext(expected_native_context));
-
-    Node* native_context = LoadNativeContext(p->context);
-    GotoIf(WordEqual(expected_native_context, native_context), &can_access);
-    // If the receiver is not a JSGlobalProxy then we miss.
-    GotoUnless(IsJSGlobalProxy(p->receiver), miss);
-    // For JSGlobalProxy receiver try to compare security tokens of current
-    // and expected native contexts.
-    Node* expected_token = LoadContextElement(expected_native_context,
-                                              Context::SECURITY_TOKEN_INDEX);
-    Node* current_token =
-        LoadContextElement(native_context, Context::SECURITY_TOKEN_INDEX);
-    Branch(WordEqual(expected_token, current_token), &can_access, miss);
-  }
-  Bind(&can_access);
-
-  BuildFastLoop(
-      MachineType::PointerRepresentation(), start_index.value(), handler_length,
-      [this, p, handler, miss](CodeStubAssembler*, Node* current) {
-        Node* prototype_cell =
-            LoadFixedArrayElement(handler, current, 0, INTPTR_PARAMETERS);
-        CheckPrototype(prototype_cell, p->name, miss);
-      },
-      1, IndexAdvanceMode::kPost);
-
-  Node* maybe_holder_cell = LoadFixedArrayElement(
-      handler, IntPtrConstant(LoadHandler::kHolderCellIndex), 0,
-      INTPTR_PARAMETERS);
-  Label load_existent(this);
-  GotoIf(WordNotEqual(maybe_holder_cell, NullConstant()), &load_existent);
-  // This is a handler for a load of a non-existent value.
-  Return(UndefinedConstant());
-
-  Bind(&load_existent);
-  Node* holder = LoadWeakCellValue(maybe_holder_cell);
-  // The |holder| is guaranteed to be alive at this point since we passed
-  // the receiver map check, the validity cell check and the prototype chain
-  // check.
-  CSA_ASSERT(this, WordNotEqual(holder, IntPtrConstant(0)));
-  return holder;
-}
-
-void CodeStubAssembler::CheckPrototype(Node* prototype_cell, Node* name,
-                                       Label* miss) {
-  Node* maybe_prototype = LoadWeakCellValue(prototype_cell, miss);
-
-  Label done(this);
-  Label if_property_cell(this), if_dictionary_object(this);
-
-  // |maybe_prototype| is either a PropertyCell or a slow-mode prototype.
-  Branch(WordEqual(LoadMap(maybe_prototype),
-                   LoadRoot(Heap::kGlobalPropertyCellMapRootIndex)),
-         &if_property_cell, &if_dictionary_object);
-
-  Bind(&if_dictionary_object);
-  {
-    CSA_ASSERT(this, IsDictionaryMap(LoadMap(maybe_prototype)));
-    NameDictionaryNegativeLookup(maybe_prototype, name, miss);
-    Goto(&done);
-  }
-
-  Bind(&if_property_cell);
-  {
-    // Ensure the property cell still contains the hole.
-    Node* value = LoadObjectField(maybe_prototype, PropertyCell::kValueOffset);
-    GotoIf(WordNotEqual(value, LoadRoot(Heap::kTheHoleValueRootIndex)), miss);
-    Goto(&done);
-  }
-
-  Bind(&done);
-}
-
-void CodeStubAssembler::NameDictionaryNegativeLookup(Node* object, Node* name,
-                                                     Label* miss) {
-  CSA_ASSERT(this, IsDictionaryMap(LoadMap(object)));
-  Node* properties = LoadProperties(object);
-  // Ensure the property does not exist in a dictionary-mode object.
-  Variable var_name_index(this, MachineType::PointerRepresentation());
-  Label done(this);
-  NameDictionaryLookup<NameDictionary>(properties, name, miss, &var_name_index,
-                                       &done);
-  Bind(&done);
-}
-
-void CodeStubAssembler::LoadIC(const LoadICParameters* p) {
-  Variable var_handler(this, MachineRepresentation::kTagged);
-  // TODO(ishell): defer blocks when it works.
-  Label if_handler(this, &var_handler), try_polymorphic(this),
-      try_megamorphic(this /*, Label::kDeferred*/),
-      miss(this /*, Label::kDeferred*/);
-
-  Node* receiver_map = LoadReceiverMap(p->receiver);
-
-  // Check monomorphic case.
-  Node* feedback =
-      TryMonomorphicCase(p->slot, p->vector, receiver_map, &if_handler,
-                         &var_handler, &try_polymorphic);
-  Bind(&if_handler);
-  {
-    HandleLoadICHandlerCase(p, var_handler.value(), &miss);
-  }
-
-  Bind(&try_polymorphic);
-  {
-    // Check polymorphic case.
-    Comment("LoadIC_try_polymorphic");
-    GotoUnless(WordEqual(LoadMap(feedback), FixedArrayMapConstant()),
-               &try_megamorphic);
-    HandlePolymorphicCase(receiver_map, feedback, &if_handler, &var_handler,
-                          &miss, 2);
-  }
-
-  Bind(&try_megamorphic);
-  {
-    // Check megamorphic case.
-    GotoUnless(
-        WordEqual(feedback, LoadRoot(Heap::kmegamorphic_symbolRootIndex)),
-        &miss);
-
-    TryProbeStubCache(isolate()->load_stub_cache(), p->receiver, p->name,
-                      &if_handler, &var_handler, &miss);
-  }
-  Bind(&miss);
-  {
-    TailCallRuntime(Runtime::kLoadIC_Miss, p->context, p->receiver, p->name,
-                    p->slot, p->vector);
-  }
-}
-
-void CodeStubAssembler::KeyedLoadIC(const LoadICParameters* p) {
-  Variable var_handler(this, MachineRepresentation::kTagged);
-  // TODO(ishell): defer blocks when it works.
-  Label if_handler(this, &var_handler), try_polymorphic(this),
-      try_megamorphic(this /*, Label::kDeferred*/),
-      try_polymorphic_name(this /*, Label::kDeferred*/),
-      miss(this /*, Label::kDeferred*/);
-
-  Node* receiver_map = LoadReceiverMap(p->receiver);
-
-  // Check monomorphic case.
-  Node* feedback =
-      TryMonomorphicCase(p->slot, p->vector, receiver_map, &if_handler,
-                         &var_handler, &try_polymorphic);
-  Bind(&if_handler);
-  {
-    HandleLoadICHandlerCase(p, var_handler.value(), &miss, kSupportElements);
-  }
-
-  Bind(&try_polymorphic);
-  {
-    // Check polymorphic case.
-    Comment("KeyedLoadIC_try_polymorphic");
-    GotoUnless(WordEqual(LoadMap(feedback), FixedArrayMapConstant()),
-               &try_megamorphic);
-    HandlePolymorphicCase(receiver_map, feedback, &if_handler, &var_handler,
-                          &miss, 2);
-  }
-
-  Bind(&try_megamorphic);
-  {
-    // Check megamorphic case.
-    Comment("KeyedLoadIC_try_megamorphic");
-    GotoUnless(
-        WordEqual(feedback, LoadRoot(Heap::kmegamorphic_symbolRootIndex)),
-        &try_polymorphic_name);
-    // TODO(jkummerow): Inline this? Or some of it?
-    TailCallStub(CodeFactory::KeyedLoadIC_Megamorphic(isolate()), p->context,
-                 p->receiver, p->name, p->slot, p->vector);
-  }
-  Bind(&try_polymorphic_name);
-  {
-    // We might have a name in feedback, and a fixed array in the next slot.
-    Comment("KeyedLoadIC_try_polymorphic_name");
-    GotoUnless(WordEqual(feedback, p->name), &miss);
-    // If the name comparison succeeded, we know we have a fixed array with
-    // at least one map/handler pair.
-    Node* offset = ElementOffsetFromIndex(
-        p->slot, FAST_HOLEY_ELEMENTS, SMI_PARAMETERS,
-        FixedArray::kHeaderSize + kPointerSize - kHeapObjectTag);
-    Node* array = Load(MachineType::AnyTagged(), p->vector, offset);
-    HandlePolymorphicCase(receiver_map, array, &if_handler, &var_handler, &miss,
-                          1);
-  }
-  Bind(&miss);
-  {
-    Comment("KeyedLoadIC_miss");
-    TailCallRuntime(Runtime::kKeyedLoadIC_Miss, p->context, p->receiver,
-                    p->name, p->slot, p->vector);
-  }
-}
-
-void CodeStubAssembler::KeyedLoadICGeneric(const LoadICParameters* p) {
-  Variable var_index(this, MachineType::PointerRepresentation());
-  Variable var_details(this, MachineRepresentation::kWord32);
-  Variable var_value(this, MachineRepresentation::kTagged);
-  Label if_index(this), if_unique_name(this), if_element_hole(this),
-      if_oob(this), slow(this), stub_cache_miss(this),
-      if_property_dictionary(this), if_found_on_receiver(this);
-
-  Node* receiver = p->receiver;
-  GotoIf(TaggedIsSmi(receiver), &slow);
-  Node* receiver_map = LoadMap(receiver);
-  Node* instance_type = LoadMapInstanceType(receiver_map);
-  // Receivers requiring non-standard element accesses (interceptors, access
-  // checks, strings and string wrappers, proxies) are handled in the runtime.
-  GotoIf(Int32LessThanOrEqual(instance_type,
-                              Int32Constant(LAST_CUSTOM_ELEMENTS_RECEIVER)),
-         &slow);
-
-  Node* key = p->name;
-  TryToName(key, &if_index, &var_index, &if_unique_name, &slow);
-
-  Bind(&if_index);
-  {
-    Comment("integer index");
-    Node* index = var_index.value();
-    Node* elements = LoadElements(receiver);
-    Node* elements_kind = LoadMapElementsKind(receiver_map);
-    Node* is_jsarray_condition =
-        Word32Equal(instance_type, Int32Constant(JS_ARRAY_TYPE));
-    Variable var_double_value(this, MachineRepresentation::kFloat64);
-    Label rebox_double(this, &var_double_value);
-
-    // Unimplemented elements kinds fall back to a runtime call.
-    Label* unimplemented_elements_kind = &slow;
-    IncrementCounter(isolate()->counters()->ic_keyed_load_generic_smi(), 1);
-    EmitElementLoad(receiver, elements, elements_kind, index,
-                    is_jsarray_condition, &if_element_hole, &rebox_double,
-                    &var_double_value, unimplemented_elements_kind, &if_oob,
-                    &slow);
-
-    Bind(&rebox_double);
-    Return(AllocateHeapNumberWithValue(var_double_value.value()));
-  }
-
-  Bind(&if_oob);
-  {
-    Comment("out of bounds");
-    Node* index = var_index.value();
-    // Negative keys can't take the fast OOB path.
-    GotoIf(IntPtrLessThan(index, IntPtrConstant(0)), &slow);
-    // Positive OOB indices are effectively the same as hole loads.
-    Goto(&if_element_hole);
-  }
-
-  Bind(&if_element_hole);
-  {
-    Comment("found the hole");
-    Label return_undefined(this);
-    BranchIfPrototypesHaveNoElements(receiver_map, &return_undefined, &slow);
-
-    Bind(&return_undefined);
-    Return(UndefinedConstant());
-  }
-
-  Node* properties = nullptr;
-  Bind(&if_unique_name);
-  {
-    Comment("key is unique name");
-    // Check if the receiver has fast or slow properties.
-    properties = LoadProperties(receiver);
-    Node* properties_map = LoadMap(properties);
-    GotoIf(WordEqual(properties_map, LoadRoot(Heap::kHashTableMapRootIndex)),
-           &if_property_dictionary);
-
-    // Try looking up the property on the receiver; if unsuccessful, look
-    // for a handler in the stub cache.
-    Comment("DescriptorArray lookup");
-
-    // Skip linear search if there are too many descriptors.
-    // TODO(jkummerow): Consider implementing binary search.
-    // See also TryLookupProperty() which has the same limitation.
-    const int32_t kMaxLinear = 210;
-    Label stub_cache(this);
-    Node* bitfield3 = LoadMapBitField3(receiver_map);
-    Node* nof =
-        DecodeWordFromWord32<Map::NumberOfOwnDescriptorsBits>(bitfield3);
-    GotoIf(UintPtrGreaterThan(nof, IntPtrConstant(kMaxLinear)), &stub_cache);
-    Node* descriptors = LoadMapDescriptors(receiver_map);
-    Variable var_name_index(this, MachineType::PointerRepresentation());
-    Label if_descriptor_found(this);
-    DescriptorLookupLinear(key, descriptors, nof, &if_descriptor_found,
-                           &var_name_index, &stub_cache);
-
-    Bind(&if_descriptor_found);
-    {
-      LoadPropertyFromFastObject(receiver, receiver_map, descriptors,
-                                 var_name_index.value(), &var_details,
-                                 &var_value);
-      Goto(&if_found_on_receiver);
-    }
-
-    Bind(&stub_cache);
-    {
-      Comment("stub cache probe for fast property load");
-      Variable var_handler(this, MachineRepresentation::kTagged);
-      Label found_handler(this, &var_handler), stub_cache_miss(this);
-      TryProbeStubCache(isolate()->load_stub_cache(), receiver, key,
-                        &found_handler, &var_handler, &stub_cache_miss);
-      Bind(&found_handler);
-      { HandleLoadICHandlerCase(p, var_handler.value(), &slow); }
-
-      Bind(&stub_cache_miss);
-      {
-        Comment("KeyedLoadGeneric_miss");
-        TailCallRuntime(Runtime::kKeyedLoadIC_Miss, p->context, p->receiver,
-                        p->name, p->slot, p->vector);
-      }
-    }
-  }
-
-  Bind(&if_property_dictionary);
-  {
-    Comment("dictionary property load");
-    // We checked for LAST_CUSTOM_ELEMENTS_RECEIVER before, which rules out
-    // seeing global objects here (which would need special handling).
-
-    Variable var_name_index(this, MachineType::PointerRepresentation());
-    Label dictionary_found(this, &var_name_index);
-    NameDictionaryLookup<NameDictionary>(properties, key, &dictionary_found,
-                                         &var_name_index, &slow);
-    Bind(&dictionary_found);
-    {
-      LoadPropertyFromNameDictionary(properties, var_name_index.value(),
-                                     &var_details, &var_value);
-      Goto(&if_found_on_receiver);
-    }
-  }
-
-  Bind(&if_found_on_receiver);
-  {
-    Node* value = CallGetterIfAccessor(var_value.value(), var_details.value(),
-                                       p->context, receiver, &slow);
-    IncrementCounter(isolate()->counters()->ic_keyed_load_generic_symbol(), 1);
-    Return(value);
-  }
-
-  Bind(&slow);
-  {
-    Comment("KeyedLoadGeneric_slow");
-    IncrementCounter(isolate()->counters()->ic_keyed_load_generic_slow(), 1);
-    // TODO(jkummerow): Should we use the GetProperty TF stub instead?
-    TailCallRuntime(Runtime::kKeyedGetProperty, p->context, p->receiver,
-                    p->name);
-  }
-}
-
-void CodeStubAssembler::HandleStoreFieldAndReturn(Node* handler_word,
-                                                  Node* holder,
-                                                  Representation representation,
-                                                  Node* value, Node* transition,
-                                                  Label* miss) {
-  bool transition_to_field = transition != nullptr;
-  Node* prepared_value = PrepareValueForWrite(value, representation, miss);
-
-  if (transition_to_field) {
-    Label storage_extended(this);
-    GotoUnless(IsSetWord<StoreHandler::ExtendStorageBits>(handler_word),
-               &storage_extended);
-    Comment("[ Extend storage");
-    ExtendPropertiesBackingStore(holder);
-    Comment("] Extend storage");
-    Goto(&storage_extended);
-
-    Bind(&storage_extended);
-  }
-
-  Node* offset = DecodeWord<StoreHandler::FieldOffsetBits>(handler_word);
-  Label if_inobject(this), if_out_of_object(this);
-  Branch(IsSetWord<StoreHandler::IsInobjectBits>(handler_word), &if_inobject,
-         &if_out_of_object);
-
-  Bind(&if_inobject);
-  {
-    StoreNamedField(holder, offset, true, representation, prepared_value,
-                    transition_to_field);
-    if (transition_to_field) {
-      StoreObjectField(holder, JSObject::kMapOffset, transition);
-    }
-    Return(value);
-  }
-
-  Bind(&if_out_of_object);
-  {
-    StoreNamedField(holder, offset, false, representation, prepared_value,
-                    transition_to_field);
-    if (transition_to_field) {
-      StoreObjectField(holder, JSObject::kMapOffset, transition);
-    }
-    Return(value);
-  }
-}
-
-void CodeStubAssembler::HandleStoreICSmiHandlerCase(Node* handler_word,
-                                                    Node* holder, Node* value,
-                                                    Node* transition,
-                                                    Label* miss) {
-  Comment(transition ? "transitioning field store" : "field store");
-
-#ifdef DEBUG
-  Node* handler_kind = DecodeWord<StoreHandler::KindBits>(handler_word);
-  if (transition) {
-    CSA_ASSERT(
-        this,
-        WordOr(WordEqual(handler_kind,
-                         IntPtrConstant(StoreHandler::kTransitionToField)),
-               WordEqual(handler_kind,
-                         IntPtrConstant(StoreHandler::kTransitionToConstant))));
-  } else {
-    CSA_ASSERT(this, WordEqual(handler_kind,
-                               IntPtrConstant(StoreHandler::kStoreField)));
-  }
-#endif
-
-  Node* field_representation =
-      DecodeWord<StoreHandler::FieldRepresentationBits>(handler_word);
-
-  Label if_smi_field(this), if_double_field(this), if_heap_object_field(this),
-      if_tagged_field(this);
-
-  GotoIf(WordEqual(field_representation, IntPtrConstant(StoreHandler::kTagged)),
-         &if_tagged_field);
-  GotoIf(WordEqual(field_representation,
-                   IntPtrConstant(StoreHandler::kHeapObject)),
-         &if_heap_object_field);
-  GotoIf(WordEqual(field_representation, IntPtrConstant(StoreHandler::kDouble)),
-         &if_double_field);
-  CSA_ASSERT(this, WordEqual(field_representation,
-                             IntPtrConstant(StoreHandler::kSmi)));
-  Goto(&if_smi_field);
-
-  Bind(&if_tagged_field);
-  {
-    Comment("store tagged field");
-    HandleStoreFieldAndReturn(handler_word, holder, Representation::Tagged(),
-                              value, transition, miss);
-  }
-
-  Bind(&if_double_field);
-  {
-    Comment("store double field");
-    HandleStoreFieldAndReturn(handler_word, holder, Representation::Double(),
-                              value, transition, miss);
-  }
-
-  Bind(&if_heap_object_field);
-  {
-    Comment("store heap object field");
-    // Generate full field type check here and then store value as Tagged.
-    Node* prepared_value =
-        PrepareValueForWrite(value, Representation::HeapObject(), miss);
-    Node* value_index_in_descriptor =
-        DecodeWord<StoreHandler::DescriptorValueIndexBits>(handler_word);
-    Node* descriptors =
-        LoadMapDescriptors(transition ? transition : LoadMap(holder));
-    Node* maybe_field_type = LoadFixedArrayElement(
-        descriptors, value_index_in_descriptor, 0, INTPTR_PARAMETERS);
-    Label do_store(this);
-    GotoIf(TaggedIsSmi(maybe_field_type), &do_store);
-    // Check that value type matches the field type.
-    {
-      Node* field_type = LoadWeakCellValue(maybe_field_type, miss);
-      Branch(WordEqual(LoadMap(prepared_value), field_type), &do_store, miss);
-    }
-    Bind(&do_store);
-    HandleStoreFieldAndReturn(handler_word, holder, Representation::Tagged(),
-                              prepared_value, transition, miss);
-  }
-
-  Bind(&if_smi_field);
-  {
-    Comment("store smi field");
-    HandleStoreFieldAndReturn(handler_word, holder, Representation::Smi(),
-                              value, transition, miss);
-  }
-}
-
-void CodeStubAssembler::HandleStoreICHandlerCase(const StoreICParameters* p,
-                                                 Node* handler, Label* miss) {
-  Label if_smi_handler(this);
-  Label try_proto_handler(this), call_handler(this);
-
-  Branch(TaggedIsSmi(handler), &if_smi_handler, &try_proto_handler);
-
-  // |handler| is a Smi, encoding what to do. See SmiHandler methods
-  // for the encoding format.
-  Bind(&if_smi_handler);
-  {
-    Node* holder = p->receiver;
-    Node* handler_word = SmiUntag(handler);
-
-    // Handle non-transitioning field stores.
-    HandleStoreICSmiHandlerCase(handler_word, holder, p->value, nullptr, miss);
-  }
-
-  Bind(&try_proto_handler);
-  {
-    GotoIf(IsCodeMap(LoadMap(handler)), &call_handler);
-    HandleStoreICProtoHandler(p, handler, miss);
-  }
-
-  // |handler| is a heap object. Must be code, call it.
-  Bind(&call_handler);
-  {
-    StoreWithVectorDescriptor descriptor(isolate());
-    TailCallStub(descriptor, handler, p->context, p->receiver, p->name,
-                 p->value, p->slot, p->vector);
-  }
-}
-
-void CodeStubAssembler::HandleStoreICProtoHandler(const StoreICParameters* p,
-                                                  Node* handler, Label* miss) {
-  // IC dispatchers rely on these assumptions to be held.
-  STATIC_ASSERT(FixedArray::kLengthOffset ==
-                StoreHandler::kTransitionCellOffset);
-  DCHECK_EQ(FixedArray::OffsetOfElementAt(StoreHandler::kSmiHandlerIndex),
-            StoreHandler::kSmiHandlerOffset);
-  DCHECK_EQ(FixedArray::OffsetOfElementAt(StoreHandler::kValidityCellIndex),
-            StoreHandler::kValidityCellOffset);
-
-  // Both FixedArray and Tuple3 handlers have validity cell at the same offset.
-  Label validity_cell_check_done(this);
-  Node* validity_cell =
-      LoadObjectField(handler, StoreHandler::kValidityCellOffset);
-  GotoIf(WordEqual(validity_cell, IntPtrConstant(0)),
-         &validity_cell_check_done);
-  Node* cell_value = LoadObjectField(validity_cell, Cell::kValueOffset);
-  GotoIf(WordNotEqual(cell_value,
-                      SmiConstant(Smi::FromInt(Map::kPrototypeChainValid))),
-         miss);
-  Goto(&validity_cell_check_done);
-
-  Bind(&validity_cell_check_done);
-  Node* smi_handler = LoadObjectField(handler, StoreHandler::kSmiHandlerOffset);
-  CSA_ASSERT(this, TaggedIsSmi(smi_handler));
-
-  Node* maybe_transition_cell =
-      LoadObjectField(handler, StoreHandler::kTransitionCellOffset);
-  Label array_handler(this), tuple_handler(this);
-  Branch(TaggedIsSmi(maybe_transition_cell), &array_handler, &tuple_handler);
-
-  Variable var_transition(this, MachineRepresentation::kTagged);
-  Label if_transition(this), if_transition_to_constant(this);
-  Bind(&tuple_handler);
-  {
-    Node* transition = LoadWeakCellValue(maybe_transition_cell, miss);
-    var_transition.Bind(transition);
-    Goto(&if_transition);
-  }
-
-  Bind(&array_handler);
-  {
-    Node* length = SmiUntag(maybe_transition_cell);
-    BuildFastLoop(MachineType::PointerRepresentation(),
-                  IntPtrConstant(StoreHandler::kFirstPrototypeIndex), length,
-                  [this, p, handler, miss](CodeStubAssembler*, Node* current) {
-                    Node* prototype_cell = LoadFixedArrayElement(
-                        handler, current, 0, INTPTR_PARAMETERS);
-                    CheckPrototype(prototype_cell, p->name, miss);
-                  },
-                  1, IndexAdvanceMode::kPost);
-
-    Node* maybe_transition_cell = LoadFixedArrayElement(
-        handler, IntPtrConstant(StoreHandler::kTransitionCellIndex), 0,
-        INTPTR_PARAMETERS);
-    Node* transition = LoadWeakCellValue(maybe_transition_cell, miss);
-    var_transition.Bind(transition);
-    Goto(&if_transition);
-  }
-
-  Bind(&if_transition);
-  {
-    Node* holder = p->receiver;
-    Node* transition = var_transition.value();
-    Node* handler_word = SmiUntag(smi_handler);
-
-    GotoIf(IsSetWord32<Map::Deprecated>(LoadMapBitField3(transition)), miss);
-
-    Node* handler_kind = DecodeWord<StoreHandler::KindBits>(handler_word);
-    GotoIf(WordEqual(handler_kind,
-                     IntPtrConstant(StoreHandler::kTransitionToConstant)),
-           &if_transition_to_constant);
-
-    // Handle transitioning field stores.
-    HandleStoreICSmiHandlerCase(handler_word, holder, p->value, transition,
-                                miss);
-
-    Bind(&if_transition_to_constant);
-    {
-      // Check that constant matches value.
-      Node* value_index_in_descriptor =
-          DecodeWord<StoreHandler::DescriptorValueIndexBits>(handler_word);
-      Node* descriptors = LoadMapDescriptors(transition);
-      Node* constant = LoadFixedArrayElement(
-          descriptors, value_index_in_descriptor, 0, INTPTR_PARAMETERS);
-      GotoIf(WordNotEqual(p->value, constant), miss);
-
-      StoreObjectField(p->receiver, JSObject::kMapOffset, transition);
-      Return(p->value);
-    }
-  }
-}
-
-void CodeStubAssembler::StoreIC(const StoreICParameters* p) {
-  Variable var_handler(this, MachineRepresentation::kTagged);
-  // TODO(ishell): defer blocks when it works.
-  Label if_handler(this, &var_handler), try_polymorphic(this),
-      try_megamorphic(this /*, Label::kDeferred*/),
-      miss(this /*, Label::kDeferred*/);
-
-  Node* receiver_map = LoadReceiverMap(p->receiver);
-
-  // Check monomorphic case.
-  Node* feedback =
-      TryMonomorphicCase(p->slot, p->vector, receiver_map, &if_handler,
-                         &var_handler, &try_polymorphic);
-  Bind(&if_handler);
-  {
-    Comment("StoreIC_if_handler");
-    HandleStoreICHandlerCase(p, var_handler.value(), &miss);
-  }
-
-  Bind(&try_polymorphic);
-  {
-    // Check polymorphic case.
-    Comment("StoreIC_try_polymorphic");
-    GotoUnless(
-        WordEqual(LoadMap(feedback), LoadRoot(Heap::kFixedArrayMapRootIndex)),
-        &try_megamorphic);
-    HandlePolymorphicCase(receiver_map, feedback, &if_handler, &var_handler,
-                          &miss, 2);
-  }
-
-  Bind(&try_megamorphic);
-  {
-    // Check megamorphic case.
-    GotoUnless(
-        WordEqual(feedback, LoadRoot(Heap::kmegamorphic_symbolRootIndex)),
-        &miss);
-
-    TryProbeStubCache(isolate()->store_stub_cache(), p->receiver, p->name,
-                      &if_handler, &var_handler, &miss);
-  }
-  Bind(&miss);
-  {
-    TailCallRuntime(Runtime::kStoreIC_Miss, p->context, p->value, p->slot,
-                    p->vector, p->receiver, p->name);
-  }
-}
-
-void CodeStubAssembler::KeyedStoreIC(const StoreICParameters* p,
-                                     LanguageMode language_mode) {
-  Variable var_handler(this, MachineRepresentation::kTagged);
-  // This is to make |miss| label see the var_handler bound on all paths.
-  var_handler.Bind(IntPtrConstant(0));
-
-  // TODO(ishell): defer blocks when it works.
-  Label if_handler(this, &var_handler), try_polymorphic(this),
-      try_megamorphic(this /*, Label::kDeferred*/),
-      try_polymorphic_name(this /*, Label::kDeferred*/),
-      miss(this /*, Label::kDeferred*/);
-
-  Node* receiver_map = LoadReceiverMap(p->receiver);
-
-  // Check monomorphic case.
-  Node* feedback =
-      TryMonomorphicCase(p->slot, p->vector, receiver_map, &if_handler,
-                         &var_handler, &try_polymorphic);
-  Bind(&if_handler);
-  {
-    Comment("KeyedStoreIC_if_handler");
-    HandleStoreICHandlerCase(p, var_handler.value(), &miss);
-  }
-
-  Bind(&try_polymorphic);
-  {
-    // CheckPolymorphic case.
-    Comment("KeyedStoreIC_try_polymorphic");
-    GotoUnless(
-        WordEqual(LoadMap(feedback), LoadRoot(Heap::kFixedArrayMapRootIndex)),
-        &try_megamorphic);
-    Label if_transition_handler(this);
-    Variable var_transition_map_cell(this, MachineRepresentation::kTagged);
-    HandleKeyedStorePolymorphicCase(receiver_map, feedback, &if_handler,
-                                    &var_handler, &if_transition_handler,
-                                    &var_transition_map_cell, &miss);
-    Bind(&if_transition_handler);
-    Comment("KeyedStoreIC_polymorphic_transition");
-    Node* transition_map =
-        LoadWeakCellValue(var_transition_map_cell.value(), &miss);
-    StoreTransitionDescriptor descriptor(isolate());
-    TailCallStub(descriptor, var_handler.value(), p->context, p->receiver,
-                 p->name, transition_map, p->value, p->slot, p->vector);
-  }
-
-  Bind(&try_megamorphic);
-  {
-    // Check megamorphic case.
-    Comment("KeyedStoreIC_try_megamorphic");
-    GotoUnless(
-        WordEqual(feedback, LoadRoot(Heap::kmegamorphic_symbolRootIndex)),
-        &try_polymorphic_name);
-    TailCallStub(
-        CodeFactory::KeyedStoreIC_Megamorphic(isolate(), language_mode),
-        p->context, p->receiver, p->name, p->value, p->slot, p->vector);
-  }
-
-  Bind(&try_polymorphic_name);
-  {
-    // We might have a name in feedback, and a fixed array in the next slot.
-    Comment("KeyedStoreIC_try_polymorphic_name");
-    GotoUnless(WordEqual(feedback, p->name), &miss);
-    // If the name comparison succeeded, we know we have a FixedArray with
-    // at least one map/handler pair.
-    Node* offset = ElementOffsetFromIndex(
-        p->slot, FAST_HOLEY_ELEMENTS, SMI_PARAMETERS,
-        FixedArray::kHeaderSize + kPointerSize - kHeapObjectTag);
-    Node* array = Load(MachineType::AnyTagged(), p->vector, offset);
-    HandlePolymorphicCase(receiver_map, array, &if_handler, &var_handler, &miss,
-                          1);
-  }
-
-  Bind(&miss);
-  {
-    Comment("KeyedStoreIC_miss");
-    TailCallRuntime(Runtime::kKeyedStoreIC_Miss, p->context, p->value, p->slot,
-                    p->vector, p->receiver, p->name);
-  }
-}
-
-void CodeStubAssembler::LoadGlobalIC(const LoadICParameters* p) {
-  Label try_handler(this), miss(this);
-  Node* weak_cell =
-      LoadFixedArrayElement(p->vector, p->slot, 0, SMI_PARAMETERS);
-  CSA_ASSERT(this, HasInstanceType(weak_cell, WEAK_CELL_TYPE));
-
-  // Load value or try handler case if the {weak_cell} is cleared.
-  Node* property_cell = LoadWeakCellValue(weak_cell, &try_handler);
-  CSA_ASSERT(this, HasInstanceType(property_cell, PROPERTY_CELL_TYPE));
-
-  Node* value = LoadObjectField(property_cell, PropertyCell::kValueOffset);
-  GotoIf(WordEqual(value, TheHoleConstant()), &miss);
-  Return(value);
-
-  Bind(&try_handler);
-  {
-    Node* handler =
-        LoadFixedArrayElement(p->vector, p->slot, kPointerSize, SMI_PARAMETERS);
-    GotoIf(WordEqual(handler, LoadRoot(Heap::kuninitialized_symbolRootIndex)),
-           &miss);
-
-    // In this case {handler} must be a Code object.
-    CSA_ASSERT(this, HasInstanceType(handler, CODE_TYPE));
-    LoadWithVectorDescriptor descriptor(isolate());
-    Node* native_context = LoadNativeContext(p->context);
-    Node* receiver =
-        LoadContextElement(native_context, Context::EXTENSION_INDEX);
-    Node* fake_name = IntPtrConstant(0);
-    TailCallStub(descriptor, handler, p->context, receiver, fake_name, p->slot,
-                 p->vector);
-  }
-  Bind(&miss);
-  {
-    TailCallRuntime(Runtime::kLoadGlobalIC_Miss, p->context, p->slot,
-                    p->vector);
-  }
-}
-
 void CodeStubAssembler::ExtendPropertiesBackingStore(compiler::Node* object) {
   Node* properties = LoadProperties(object);
   Node* length = LoadFixedArrayBaseLength(properties);