Move IC code into a subdir and move ic-compilation related code from stub-cache into ic-compiler

src/ia32/ic-ia32.cc

Index: src/ia32/ic-ia32.cc
diff --git a/src/ia32/ic-ia32.cc b/src/ia32/ic-ia32.cc
deleted file mode 100644
index 62e845eb27eee964527d7aac84985fa3c6f79e0a..0000000000000000000000000000000000000000
--- a/src/ia32/ic-ia32.cc
+++ /dev/null
@@ -1,1211 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "src/v8.h"
-
-#if V8_TARGET_ARCH_IA32
-
-#include "src/codegen.h"
-#include "src/ic-inl.h"
-#include "src/runtime.h"
-#include "src/stub-cache.h"
-
-namespace v8 {
-namespace internal {
-
-// ----------------------------------------------------------------------------
-// Static IC stub generators.
-//
-
-#define __ ACCESS_MASM(masm)
-
-
-static void GenerateGlobalInstanceTypeCheck(MacroAssembler* masm,
-                                            Register type,
-                                            Label* global_object) {
-  // Register usage:
-  //   type: holds the receiver instance type on entry.
-  __ cmp(type, JS_GLOBAL_OBJECT_TYPE);
-  __ j(equal, global_object);
-  __ cmp(type, JS_BUILTINS_OBJECT_TYPE);
-  __ j(equal, global_object);
-  __ cmp(type, JS_GLOBAL_PROXY_TYPE);
-  __ j(equal, global_object);
-}
-
-
-// Helper function used to load a property from a dictionary backing
-// storage. This function may fail to load a property even though it is
-// in the dictionary, so code at miss_label must always call a backup
-// property load that is complete. This function is safe to call if
-// name is not internalized, and will jump to the miss_label in that
-// case. The generated code assumes that the receiver has slow
-// properties, is not a global object and does not have interceptors.
-static void GenerateDictionaryLoad(MacroAssembler* masm,
-                                   Label* miss_label,
-                                   Register elements,
-                                   Register name,
-                                   Register r0,
-                                   Register r1,
-                                   Register result) {
-  // Register use:
-  //
-  // elements - holds the property dictionary on entry and is unchanged.
-  //
-  // name - holds the name of the property on entry and is unchanged.
-  //
-  // Scratch registers:
-  //
-  // r0   - used for the index into the property dictionary
-  //
-  // r1   - used to hold the capacity of the property dictionary.
-  //
-  // result - holds the result on exit.
-
-  Label done;
-
-  // Probe the dictionary.
-  NameDictionaryLookupStub::GeneratePositiveLookup(masm,
-                                                   miss_label,
-                                                   &done,
-                                                   elements,
-                                                   name,
-                                                   r0,
-                                                   r1);
-
-  // If probing finds an entry in the dictionary, r0 contains the
-  // index into the dictionary. Check that the value is a normal
-  // property.
-  __ bind(&done);
-  const int kElementsStartOffset =
-      NameDictionary::kHeaderSize +
-      NameDictionary::kElementsStartIndex * kPointerSize;
-  const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
-  __ test(Operand(elements, r0, times_4, kDetailsOffset - kHeapObjectTag),
-          Immediate(PropertyDetails::TypeField::kMask << kSmiTagSize));
-  __ j(not_zero, miss_label);
-
-  // Get the value at the masked, scaled index.
-  const int kValueOffset = kElementsStartOffset + kPointerSize;
-  __ mov(result, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag));
-}
-
-
-// Helper function used to store a property to a dictionary backing
-// storage. This function may fail to store a property eventhough it
-// is in the dictionary, so code at miss_label must always call a
-// backup property store that is complete. This function is safe to
-// call if name is not internalized, and will jump to the miss_label in
-// that case. The generated code assumes that the receiver has slow
-// properties, is not a global object and does not have interceptors.
-static void GenerateDictionaryStore(MacroAssembler* masm,
-                                    Label* miss_label,
-                                    Register elements,
-                                    Register name,
-                                    Register value,
-                                    Register r0,
-                                    Register r1) {
-  // Register use:
-  //
-  // elements - holds the property dictionary on entry and is clobbered.
-  //
-  // name - holds the name of the property on entry and is unchanged.
-  //
-  // value - holds the value to store and is unchanged.
-  //
-  // r0 - used for index into the property dictionary and is clobbered.
-  //
-  // r1 - used to hold the capacity of the property dictionary and is clobbered.
-  Label done;
-
-
-  // Probe the dictionary.
-  NameDictionaryLookupStub::GeneratePositiveLookup(masm,
-                                                   miss_label,
-                                                   &done,
-                                                   elements,
-                                                   name,
-                                                   r0,
-                                                   r1);
-
-  // If probing finds an entry in the dictionary, r0 contains the
-  // index into the dictionary. Check that the value is a normal
-  // property that is not read only.
-  __ bind(&done);
-  const int kElementsStartOffset =
-      NameDictionary::kHeaderSize +
-      NameDictionary::kElementsStartIndex * kPointerSize;
-  const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize;
-  const int kTypeAndReadOnlyMask =
-      (PropertyDetails::TypeField::kMask |
-       PropertyDetails::AttributesField::encode(READ_ONLY)) << kSmiTagSize;
-  __ test(Operand(elements, r0, times_4, kDetailsOffset - kHeapObjectTag),
-          Immediate(kTypeAndReadOnlyMask));
-  __ j(not_zero, miss_label);
-
-  // Store the value at the masked, scaled index.
-  const int kValueOffset = kElementsStartOffset + kPointerSize;
-  __ lea(r0, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag));
-  __ mov(Operand(r0, 0), value);
-
-  // Update write barrier. Make sure not to clobber the value.
-  __ mov(r1, value);
-  __ RecordWrite(elements, r0, r1, kDontSaveFPRegs);
-}
-
-
-// Checks the receiver for special cases (value type, slow case bits).
-// Falls through for regular JS object.
-static void GenerateKeyedLoadReceiverCheck(MacroAssembler* masm,
-                                           Register receiver,
-                                           Register map,
-                                           int interceptor_bit,
-                                           Label* slow) {
-  // Register use:
-  //   receiver - holds the receiver and is unchanged.
-  // Scratch registers:
-  //   map - used to hold the map of the receiver.
-
-  // Check that the object isn't a smi.
-  __ JumpIfSmi(receiver, slow);
-
-  // Get the map of the receiver.
-  __ mov(map, FieldOperand(receiver, HeapObject::kMapOffset));
-
-  // Check bit field.
-  __ test_b(FieldOperand(map, Map::kBitFieldOffset),
-            (1 << Map::kIsAccessCheckNeeded) | (1 << interceptor_bit));
-  __ j(not_zero, slow);
-  // Check that the object is some kind of JS object EXCEPT JS Value type.
-  // In the case that the object is a value-wrapper object,
-  // we enter the runtime system to make sure that indexing
-  // into string objects works as intended.
-  DCHECK(JS_OBJECT_TYPE > JS_VALUE_TYPE);
-
-  __ CmpInstanceType(map, JS_OBJECT_TYPE);
-  __ j(below, slow);
-}
-
-
-// Loads an indexed element from a fast case array.
-// If not_fast_array is NULL, doesn't perform the elements map check.
-static void GenerateFastArrayLoad(MacroAssembler* masm,
-                                  Register receiver,
-                                  Register key,
-                                  Register scratch,
-                                  Register result,
-                                  Label* not_fast_array,
-                                  Label* out_of_range) {
-  // Register use:
-  //   receiver - holds the receiver and is unchanged.
-  //   key - holds the key and is unchanged (must be a smi).
-  // Scratch registers:
-  //   scratch - used to hold elements of the receiver and the loaded value.
-  //   result - holds the result on exit if the load succeeds and
-  //            we fall through.
-
-  __ mov(scratch, FieldOperand(receiver, JSObject::kElementsOffset));
-  if (not_fast_array != NULL) {
-    // Check that the object is in fast mode and writable.
-    __ CheckMap(scratch,
-                masm->isolate()->factory()->fixed_array_map(),
-                not_fast_array,
-                DONT_DO_SMI_CHECK);
-  } else {
-    __ AssertFastElements(scratch);
-  }
-  // Check that the key (index) is within bounds.
-  __ cmp(key, FieldOperand(scratch, FixedArray::kLengthOffset));
-  __ j(above_equal, out_of_range);
-  // Fast case: Do the load.
-  STATIC_ASSERT((kPointerSize == 4) && (kSmiTagSize == 1) && (kSmiTag == 0));
-  __ mov(scratch, FieldOperand(scratch, key, times_2, FixedArray::kHeaderSize));
-  __ cmp(scratch, Immediate(masm->isolate()->factory()->the_hole_value()));
-  // In case the loaded value is the_hole we have to consult GetProperty
-  // to ensure the prototype chain is searched.
-  __ j(equal, out_of_range);
-  if (!result.is(scratch)) {
-    __ mov(result, scratch);
-  }
-}
-
-
-// Checks whether a key is an array index string or a unique name.
-// Falls through if the key is a unique name.
-static void GenerateKeyNameCheck(MacroAssembler* masm,
-                                 Register key,
-                                 Register map,
-                                 Register hash,
-                                 Label* index_string,
-                                 Label* not_unique) {
-  // Register use:
-  //   key - holds the key and is unchanged. Assumed to be non-smi.
-  // Scratch registers:
-  //   map - used to hold the map of the key.
-  //   hash - used to hold the hash of the key.
-  Label unique;
-  __ CmpObjectType(key, LAST_UNIQUE_NAME_TYPE, map);
-  __ j(above, not_unique);
-  STATIC_ASSERT(LAST_UNIQUE_NAME_TYPE == FIRST_NONSTRING_TYPE);
-  __ j(equal, &unique);
-
-  // Is the string an array index, with cached numeric value?
-  __ mov(hash, FieldOperand(key, Name::kHashFieldOffset));
-  __ test(hash, Immediate(Name::kContainsCachedArrayIndexMask));
-  __ j(zero, index_string);
-
-  // Is the string internalized? We already know it's a string so a single
-  // bit test is enough.
-  STATIC_ASSERT(kNotInternalizedTag != 0);
-  __ test_b(FieldOperand(map, Map::kInstanceTypeOffset),
-            kIsNotInternalizedMask);
-  __ j(not_zero, not_unique);
-
-  __ bind(&unique);
-}
-
-
-static Operand GenerateMappedArgumentsLookup(MacroAssembler* masm,
-                                             Register object,
-                                             Register key,
-                                             Register scratch1,
-                                             Register scratch2,
-                                             Label* unmapped_case,
-                                             Label* slow_case) {
-  Heap* heap = masm->isolate()->heap();
-  Factory* factory = masm->isolate()->factory();
-
-  // Check that the receiver is a JSObject. Because of the elements
-  // map check later, we do not need to check for interceptors or
-  // whether it requires access checks.
-  __ JumpIfSmi(object, slow_case);
-  // Check that the object is some kind of JSObject.
-  __ CmpObjectType(object, FIRST_JS_RECEIVER_TYPE, scratch1);
-  __ j(below, slow_case);
-
-  // Check that the key is a positive smi.
-  __ test(key, Immediate(0x80000001));
-  __ j(not_zero, slow_case);
-
-  // Load the elements into scratch1 and check its map.
-  Handle<Map> arguments_map(heap->sloppy_arguments_elements_map());
-  __ mov(scratch1, FieldOperand(object, JSObject::kElementsOffset));
-  __ CheckMap(scratch1, arguments_map, slow_case, DONT_DO_SMI_CHECK);
-
-  // Check if element is in the range of mapped arguments. If not, jump
-  // to the unmapped lookup with the parameter map in scratch1.
-  __ mov(scratch2, FieldOperand(scratch1, FixedArray::kLengthOffset));
-  __ sub(scratch2, Immediate(Smi::FromInt(2)));
-  __ cmp(key, scratch2);
-  __ j(above_equal, unmapped_case);
-
-  // Load element index and check whether it is the hole.
-  const int kHeaderSize = FixedArray::kHeaderSize + 2 * kPointerSize;
-  __ mov(scratch2, FieldOperand(scratch1,
-                                key,
-                                times_half_pointer_size,
-                                kHeaderSize));
-  __ cmp(scratch2, factory->the_hole_value());
-  __ j(equal, unmapped_case);
-
-  // Load value from context and return it. We can reuse scratch1 because
-  // we do not jump to the unmapped lookup (which requires the parameter
-  // map in scratch1).
-  const int kContextOffset = FixedArray::kHeaderSize;
-  __ mov(scratch1, FieldOperand(scratch1, kContextOffset));
-  return FieldOperand(scratch1,
-                      scratch2,
-                      times_half_pointer_size,
-                      Context::kHeaderSize);
-}
-
-
-static Operand GenerateUnmappedArgumentsLookup(MacroAssembler* masm,
-                                               Register key,
-                                               Register parameter_map,
-                                               Register scratch,
-                                               Label* slow_case) {
-  // Element is in arguments backing store, which is referenced by the
-  // second element of the parameter_map.
-  const int kBackingStoreOffset = FixedArray::kHeaderSize + kPointerSize;
-  Register backing_store = parameter_map;
-  __ mov(backing_store, FieldOperand(parameter_map, kBackingStoreOffset));
-  Handle<Map> fixed_array_map(masm->isolate()->heap()->fixed_array_map());
-  __ CheckMap(backing_store, fixed_array_map, slow_case, DONT_DO_SMI_CHECK);
-  __ mov(scratch, FieldOperand(backing_store, FixedArray::kLengthOffset));
-  __ cmp(key, scratch);
-  __ j(greater_equal, slow_case);
-  return FieldOperand(backing_store,
-                      key,
-                      times_half_pointer_size,
-                      FixedArray::kHeaderSize);
-}
-
-
-void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) {
-  // The return address is on the stack.
-  Label slow, check_name, index_smi, index_name, property_array_property;
-  Label probe_dictionary, check_number_dictionary;
-
-  Register receiver = ReceiverRegister();
-  Register key = NameRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(key.is(ecx));
-
-  // Check that the key is a smi.
-  __ JumpIfNotSmi(key, &check_name);
-  __ bind(&index_smi);
-  // Now the key is known to be a smi. This place is also jumped to from
-  // where a numeric string is converted to a smi.
-
-  GenerateKeyedLoadReceiverCheck(
-      masm, receiver, eax, Map::kHasIndexedInterceptor, &slow);
-
-  // Check the receiver's map to see if it has fast elements.
-  __ CheckFastElements(eax, &check_number_dictionary);
-
-  GenerateFastArrayLoad(masm, receiver, key, eax, eax, NULL, &slow);
-  Isolate* isolate = masm->isolate();
-  Counters* counters = isolate->counters();
-  __ IncrementCounter(counters->keyed_load_generic_smi(), 1);
-  __ ret(0);
-
-  __ bind(&check_number_dictionary);
-  __ mov(ebx, key);
-  __ SmiUntag(ebx);
-  __ mov(eax, FieldOperand(receiver, JSObject::kElementsOffset));
-
-  // Check whether the elements is a number dictionary.
-  // ebx: untagged index
-  // eax: elements
-  __ CheckMap(eax,
-              isolate->factory()->hash_table_map(),
-              &slow,
-              DONT_DO_SMI_CHECK);
-  Label slow_pop_receiver;
-  // Push receiver on the stack to free up a register for the dictionary
-  // probing.
-  __ push(receiver);
-  __ LoadFromNumberDictionary(&slow_pop_receiver, eax, key, ebx, edx, edi, eax);
-  // Pop receiver before returning.
-  __ pop(receiver);
-  __ ret(0);
-
-  __ bind(&slow_pop_receiver);
-  // Pop the receiver from the stack and jump to runtime.
-  __ pop(receiver);
-
-  __ bind(&slow);
-  // Slow case: jump to runtime.
-  __ IncrementCounter(counters->keyed_load_generic_slow(), 1);
-  GenerateRuntimeGetProperty(masm);
-
-  __ bind(&check_name);
-  GenerateKeyNameCheck(masm, key, eax, ebx, &index_name, &slow);
-
-  GenerateKeyedLoadReceiverCheck(
-      masm, receiver, eax, Map::kHasNamedInterceptor, &slow);
-
-  // If the receiver is a fast-case object, check the keyed lookup
-  // cache. Otherwise probe the dictionary.
-  __ mov(ebx, FieldOperand(receiver, JSObject::kPropertiesOffset));
-  __ cmp(FieldOperand(ebx, HeapObject::kMapOffset),
-         Immediate(isolate->factory()->hash_table_map()));
-  __ j(equal, &probe_dictionary);
-
-  // The receiver's map is still in eax, compute the keyed lookup cache hash
-  // based on 32 bits of the map pointer and the string hash.
-  if (FLAG_debug_code) {
-    __ cmp(eax, FieldOperand(receiver, HeapObject::kMapOffset));
-    __ Check(equal, kMapIsNoLongerInEax);
-  }
-  __ mov(ebx, eax);  // Keep the map around for later.
-  __ shr(eax, KeyedLookupCache::kMapHashShift);
-  __ mov(edi, FieldOperand(key, String::kHashFieldOffset));
-  __ shr(edi, String::kHashShift);
-  __ xor_(eax, edi);
-  __ and_(eax, KeyedLookupCache::kCapacityMask & KeyedLookupCache::kHashMask);
-
-  // Load the key (consisting of map and internalized string) from the cache and
-  // check for match.
-  Label load_in_object_property;
-  static const int kEntriesPerBucket = KeyedLookupCache::kEntriesPerBucket;
-  Label hit_on_nth_entry[kEntriesPerBucket];
-  ExternalReference cache_keys =
-      ExternalReference::keyed_lookup_cache_keys(masm->isolate());
-
-  for (int i = 0; i < kEntriesPerBucket - 1; i++) {
-    Label try_next_entry;
-    __ mov(edi, eax);
-    __ shl(edi, kPointerSizeLog2 + 1);
-    if (i != 0) {
-      __ add(edi, Immediate(kPointerSize * i * 2));
-    }
-    __ cmp(ebx, Operand::StaticArray(edi, times_1, cache_keys));
-    __ j(not_equal, &try_next_entry);
-    __ add(edi, Immediate(kPointerSize));
-    __ cmp(key, Operand::StaticArray(edi, times_1, cache_keys));
-    __ j(equal, &hit_on_nth_entry[i]);
-    __ bind(&try_next_entry);
-  }
-
-  __ lea(edi, Operand(eax, 1));
-  __ shl(edi, kPointerSizeLog2 + 1);
-  __ add(edi, Immediate(kPointerSize * (kEntriesPerBucket - 1) * 2));
-  __ cmp(ebx, Operand::StaticArray(edi, times_1, cache_keys));
-  __ j(not_equal, &slow);
-  __ add(edi, Immediate(kPointerSize));
-  __ cmp(key, Operand::StaticArray(edi, times_1, cache_keys));
-  __ j(not_equal, &slow);
-
-  // Get field offset.
-  // ebx      : receiver's map
-  // eax      : lookup cache index
-  ExternalReference cache_field_offsets =
-      ExternalReference::keyed_lookup_cache_field_offsets(masm->isolate());
-
-  // Hit on nth entry.
-  for (int i = kEntriesPerBucket - 1; i >= 0; i--) {
-    __ bind(&hit_on_nth_entry[i]);
-    if (i != 0) {
-      __ add(eax, Immediate(i));
-    }
-    __ mov(edi,
-           Operand::StaticArray(eax, times_pointer_size, cache_field_offsets));
-    __ movzx_b(eax, FieldOperand(ebx, Map::kInObjectPropertiesOffset));
-    __ sub(edi, eax);
-    __ j(above_equal, &property_array_property);
-    if (i != 0) {
-      __ jmp(&load_in_object_property);
-    }
-  }
-
-  // Load in-object property.
-  __ bind(&load_in_object_property);
-  __ movzx_b(eax, FieldOperand(ebx, Map::kInstanceSizeOffset));
-  __ add(eax, edi);
-  __ mov(eax, FieldOperand(receiver, eax, times_pointer_size, 0));
-  __ IncrementCounter(counters->keyed_load_generic_lookup_cache(), 1);
-  __ ret(0);
-
-  // Load property array property.
-  __ bind(&property_array_property);
-  __ mov(eax, FieldOperand(receiver, JSObject::kPropertiesOffset));
-  __ mov(eax, FieldOperand(eax, edi, times_pointer_size,
-                           FixedArray::kHeaderSize));
-  __ IncrementCounter(counters->keyed_load_generic_lookup_cache(), 1);
-  __ ret(0);
-
-  // Do a quick inline probe of the receiver's dictionary, if it
-  // exists.
-  __ bind(&probe_dictionary);
-
-  __ mov(eax, FieldOperand(receiver, JSObject::kMapOffset));
-  __ movzx_b(eax, FieldOperand(eax, Map::kInstanceTypeOffset));
-  GenerateGlobalInstanceTypeCheck(masm, eax, &slow);
-
-  GenerateDictionaryLoad(masm, &slow, ebx, key, eax, edi, eax);
-  __ IncrementCounter(counters->keyed_load_generic_symbol(), 1);
-  __ ret(0);
-
-  __ bind(&index_name);
-  __ IndexFromHash(ebx, key);
-  // Now jump to the place where smi keys are handled.
-  __ jmp(&index_smi);
-}
-
-
-void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
-  // Return address is on the stack.
-  Label miss;
-
-  Register receiver = ReceiverRegister();
-  Register index = NameRegister();
-  Register scratch = ebx;
-  DCHECK(!scratch.is(receiver) && !scratch.is(index));
-  Register result = eax;
-  DCHECK(!result.is(scratch));
-
-  StringCharAtGenerator char_at_generator(receiver,
-                                          index,
-                                          scratch,
-                                          result,
-                                          &miss,  // When not a string.
-                                          &miss,  // When not a number.
-                                          &miss,  // When index out of range.
-                                          STRING_INDEX_IS_ARRAY_INDEX);
-  char_at_generator.GenerateFast(masm);
-  __ ret(0);
-
-  StubRuntimeCallHelper call_helper;
-  char_at_generator.GenerateSlow(masm, call_helper);
-
-  __ bind(&miss);
-  GenerateMiss(masm);
-}
-
-
-void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) {
-  // Return address is on the stack.
-  Label slow;
-
-  Register receiver = ReceiverRegister();
-  Register key = NameRegister();
-  Register scratch = eax;
-  DCHECK(!scratch.is(receiver) && !scratch.is(key));
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(receiver, &slow);
-
-  // Check that the key is an array index, that is Uint32.
-  __ test(key, Immediate(kSmiTagMask | kSmiSignMask));
-  __ j(not_zero, &slow);
-
-  // Get the map of the receiver.
-  __ mov(scratch, FieldOperand(receiver, HeapObject::kMapOffset));
-
-  // Check that it has indexed interceptor and access checks
-  // are not enabled for this object.
-  __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset));
-  __ and_(scratch, Immediate(kSlowCaseBitFieldMask));
-  __ cmp(scratch, Immediate(1 << Map::kHasIndexedInterceptor));
-  __ j(not_zero, &slow);
-
-  // Everything is fine, call runtime.
-  __ pop(scratch);
-  __ push(receiver);  // receiver
-  __ push(key);       // key
-  __ push(scratch);   // return address
-
-  // Perform tail call to the entry.
-  ExternalReference ref = ExternalReference(
-      IC_Utility(kLoadElementWithInterceptor), masm->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
-
-  __ bind(&slow);
-  GenerateMiss(masm);
-}
-
-
-void KeyedLoadIC::GenerateSloppyArguments(MacroAssembler* masm) {
-  // The return address is on the stack.
-  Register receiver = ReceiverRegister();
-  Register key = NameRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(key.is(ecx));
-
-  Label slow, notin;
-  Factory* factory = masm->isolate()->factory();
-  Operand mapped_location =
-      GenerateMappedArgumentsLookup(
-          masm, receiver, key, ebx, eax, &notin, &slow);
-  __ mov(eax, mapped_location);
-  __ Ret();
-  __ bind(&notin);
-  // The unmapped lookup expects that the parameter map is in ebx.
-  Operand unmapped_location =
-      GenerateUnmappedArgumentsLookup(masm, key, ebx, eax, &slow);
-  __ cmp(unmapped_location, factory->the_hole_value());
-  __ j(equal, &slow);
-  __ mov(eax, unmapped_location);
-  __ Ret();
-  __ bind(&slow);
-  GenerateMiss(masm);
-}
-
-
-void KeyedStoreIC::GenerateSloppyArguments(MacroAssembler* masm) {
-  // Return address is on the stack.
-  Label slow, notin;
-  Register receiver = ReceiverRegister();
-  Register name = NameRegister();
-  Register value = ValueRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(name.is(ecx));
-  DCHECK(value.is(eax));
-
-  Operand mapped_location =
-      GenerateMappedArgumentsLookup(masm, receiver, name, ebx, edi, &notin,
-                                    &slow);
-  __ mov(mapped_location, value);
-  __ lea(ecx, mapped_location);
-  __ mov(edx, value);
-  __ RecordWrite(ebx, ecx, edx, kDontSaveFPRegs);
-  __ Ret();
-  __ bind(&notin);
-  // The unmapped lookup expects that the parameter map is in ebx.
-  Operand unmapped_location =
-      GenerateUnmappedArgumentsLookup(masm, name, ebx, edi, &slow);
-  __ mov(unmapped_location, value);
-  __ lea(edi, unmapped_location);
-  __ mov(edx, value);
-  __ RecordWrite(ebx, edi, edx, kDontSaveFPRegs);
-  __ Ret();
-  __ bind(&slow);
-  GenerateMiss(masm);
-}
-
-
-static void KeyedStoreGenerateGenericHelper(
-    MacroAssembler* masm,
-    Label* fast_object,
-    Label* fast_double,
-    Label* slow,
-    KeyedStoreCheckMap check_map,
-    KeyedStoreIncrementLength increment_length) {
-  Label transition_smi_elements;
-  Label finish_object_store, non_double_value, transition_double_elements;
-  Label fast_double_without_map_check;
-  Register receiver = KeyedStoreIC::ReceiverRegister();
-  Register key = KeyedStoreIC::NameRegister();
-  Register value = KeyedStoreIC::ValueRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(key.is(ecx));
-  DCHECK(value.is(eax));
-  // key is a smi.
-  // ebx: FixedArray receiver->elements
-  // edi: receiver map
-  // Fast case: Do the store, could either Object or double.
-  __ bind(fast_object);
-  if (check_map == kCheckMap) {
-    __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset));
-    __ cmp(edi, masm->isolate()->factory()->fixed_array_map());
-    __ j(not_equal, fast_double);
-  }
-
-  // HOLECHECK: guards "A[i] = V"
-  // We have to go to the runtime if the current value is the hole because
-  // there may be a callback on the element
-  Label holecheck_passed1;
-  __ cmp(FixedArrayElementOperand(ebx, key),
-         masm->isolate()->factory()->the_hole_value());
-  __ j(not_equal, &holecheck_passed1);
-  __ JumpIfDictionaryInPrototypeChain(receiver, ebx, edi, slow);
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-
-  __ bind(&holecheck_passed1);
-
-  // Smi stores don't require further checks.
-  Label non_smi_value;
-  __ JumpIfNotSmi(value, &non_smi_value);
-  if (increment_length == kIncrementLength) {
-    // Add 1 to receiver->length.
-    __ add(FieldOperand(receiver, JSArray::kLengthOffset),
-           Immediate(Smi::FromInt(1)));
-  }
-  // It's irrelevant whether array is smi-only or not when writing a smi.
-  __ mov(FixedArrayElementOperand(ebx, key), value);
-  __ ret(0);
-
-  __ bind(&non_smi_value);
-  // Escape to elements kind transition case.
-  __ mov(edi, FieldOperand(receiver, HeapObject::kMapOffset));
-  __ CheckFastObjectElements(edi, &transition_smi_elements);
-
-  // Fast elements array, store the value to the elements backing store.
-  __ bind(&finish_object_store);
-  if (increment_length == kIncrementLength) {
-    // Add 1 to receiver->length.
-    __ add(FieldOperand(receiver, JSArray::kLengthOffset),
-           Immediate(Smi::FromInt(1)));
-  }
-  __ mov(FixedArrayElementOperand(ebx, key), value);
-  // Update write barrier for the elements array address.
-  __ mov(edx, value);  // Preserve the value which is returned.
-  __ RecordWriteArray(
-      ebx, edx, key, kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
-  __ ret(0);
-
-  __ bind(fast_double);
-  if (check_map == kCheckMap) {
-    // Check for fast double array case. If this fails, call through to the
-    // runtime.
-    __ cmp(edi, masm->isolate()->factory()->fixed_double_array_map());
-    __ j(not_equal, slow);
-    // If the value is a number, store it as a double in the FastDoubleElements
-    // array.
-  }
-
-  // HOLECHECK: guards "A[i] double hole?"
-  // We have to see if the double version of the hole is present. If so
-  // go to the runtime.
-  uint32_t offset = FixedDoubleArray::kHeaderSize + sizeof(kHoleNanLower32);
-  __ cmp(FieldOperand(ebx, key, times_4, offset), Immediate(kHoleNanUpper32));
-  __ j(not_equal, &fast_double_without_map_check);
-  __ JumpIfDictionaryInPrototypeChain(receiver, ebx, edi, slow);
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-
-  __ bind(&fast_double_without_map_check);
-  __ StoreNumberToDoubleElements(value, ebx, key, edi, xmm0,
-                                 &transition_double_elements);
-  if (increment_length == kIncrementLength) {
-    // Add 1 to receiver->length.
-    __ add(FieldOperand(receiver, JSArray::kLengthOffset),
-           Immediate(Smi::FromInt(1)));
-  }
-  __ ret(0);
-
-  __ bind(&transition_smi_elements);
-  __ mov(ebx, FieldOperand(receiver, HeapObject::kMapOffset));
-
-  // Transition the array appropriately depending on the value type.
-  __ CheckMap(value,
-              masm->isolate()->factory()->heap_number_map(),
-              &non_double_value,
-              DONT_DO_SMI_CHECK);
-
-  // Value is a double. Transition FAST_SMI_ELEMENTS -> FAST_DOUBLE_ELEMENTS
-  // and complete the store.
-  __ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
-                                         FAST_DOUBLE_ELEMENTS,
-                                         ebx,
-                                         edi,
-                                         slow);
-  AllocationSiteMode mode = AllocationSite::GetMode(FAST_SMI_ELEMENTS,
-                                                    FAST_DOUBLE_ELEMENTS);
-  ElementsTransitionGenerator::GenerateSmiToDouble(
-      masm, receiver, key, value, ebx, mode, slow);
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-  __ jmp(&fast_double_without_map_check);
-
-  __ bind(&non_double_value);
-  // Value is not a double, FAST_SMI_ELEMENTS -> FAST_ELEMENTS
-  __ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
-                                         FAST_ELEMENTS,
-                                         ebx,
-                                         edi,
-                                         slow);
-  mode = AllocationSite::GetMode(FAST_SMI_ELEMENTS, FAST_ELEMENTS);
-  ElementsTransitionGenerator::GenerateMapChangeElementsTransition(
-      masm, receiver, key, value, ebx, mode, slow);
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-  __ jmp(&finish_object_store);
-
-  __ bind(&transition_double_elements);
-  // Elements are FAST_DOUBLE_ELEMENTS, but value is an Object that's not a
-  // HeapNumber. Make sure that the receiver is a Array with FAST_ELEMENTS and
-  // transition array from FAST_DOUBLE_ELEMENTS to FAST_ELEMENTS
-  __ mov(ebx, FieldOperand(receiver, HeapObject::kMapOffset));
-  __ LoadTransitionedArrayMapConditional(FAST_DOUBLE_ELEMENTS,
-                                         FAST_ELEMENTS,
-                                         ebx,
-                                         edi,
-                                         slow);
-  mode = AllocationSite::GetMode(FAST_DOUBLE_ELEMENTS, FAST_ELEMENTS);
-  ElementsTransitionGenerator::GenerateDoubleToObject(
-      masm, receiver, key, value, ebx, mode, slow);
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-  __ jmp(&finish_object_store);
-}
-
-
-void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm,
-                                   StrictMode strict_mode) {
-  // Return address is on the stack.
-  Label slow, fast_object, fast_object_grow;
-  Label fast_double, fast_double_grow;
-  Label array, extra, check_if_double_array;
-  Register receiver = ReceiverRegister();
-  Register key = NameRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(key.is(ecx));
-
-  // Check that the object isn't a smi.
-  __ JumpIfSmi(receiver, &slow);
-  // Get the map from the receiver.
-  __ mov(edi, FieldOperand(receiver, HeapObject::kMapOffset));
-  // Check that the receiver does not require access checks and is not observed.
-  // The generic stub does not perform map checks or handle observed objects.
-  __ test_b(FieldOperand(edi, Map::kBitFieldOffset),
-            1 << Map::kIsAccessCheckNeeded | 1 << Map::kIsObserved);
-  __ j(not_zero, &slow);
-  // Check that the key is a smi.
-  __ JumpIfNotSmi(key, &slow);
-  __ CmpInstanceType(edi, JS_ARRAY_TYPE);
-  __ j(equal, &array);
-  // Check that the object is some kind of JSObject.
-  __ CmpInstanceType(edi, FIRST_JS_OBJECT_TYPE);
-  __ j(below, &slow);
-
-  // Object case: Check key against length in the elements array.
-  // Key is a smi.
-  // edi: receiver map
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-  // Check array bounds. Both the key and the length of FixedArray are smis.
-  __ cmp(key, FieldOperand(ebx, FixedArray::kLengthOffset));
-  __ j(below, &fast_object);
-
-  // Slow case: call runtime.
-  __ bind(&slow);
-  GenerateRuntimeSetProperty(masm, strict_mode);
-
-  // Extra capacity case: Check if there is extra capacity to
-  // perform the store and update the length. Used for adding one
-  // element to the array by writing to array[array.length].
-  __ bind(&extra);
-  // receiver is a JSArray.
-  // key is a smi.
-  // ebx: receiver->elements, a FixedArray
-  // edi: receiver map
-  // flags: compare (key, receiver.length())
-  // do not leave holes in the array:
-  __ j(not_equal, &slow);
-  __ cmp(key, FieldOperand(ebx, FixedArray::kLengthOffset));
-  __ j(above_equal, &slow);
-  __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset));
-  __ cmp(edi, masm->isolate()->factory()->fixed_array_map());
-  __ j(not_equal, &check_if_double_array);
-  __ jmp(&fast_object_grow);
-
-  __ bind(&check_if_double_array);
-  __ cmp(edi, masm->isolate()->factory()->fixed_double_array_map());
-  __ j(not_equal, &slow);
-  __ jmp(&fast_double_grow);
-
-  // Array case: Get the length and the elements array from the JS
-  // array. Check that the array is in fast mode (and writable); if it
-  // is the length is always a smi.
-  __ bind(&array);
-  // receiver is a JSArray.
-  // key is a smi.
-  // edi: receiver map
-  __ mov(ebx, FieldOperand(receiver, JSObject::kElementsOffset));
-
-  // Check the key against the length in the array and fall through to the
-  // common store code.
-  __ cmp(key, FieldOperand(receiver, JSArray::kLengthOffset));  // Compare smis.
-  __ j(above_equal, &extra);
-
-  KeyedStoreGenerateGenericHelper(masm, &fast_object, &fast_double,
-                                  &slow, kCheckMap, kDontIncrementLength);
-  KeyedStoreGenerateGenericHelper(masm, &fast_object_grow, &fast_double_grow,
-                                  &slow, kDontCheckMap, kIncrementLength);
-}
-
-
-void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
-  // The return address is on the stack.
-  Register receiver = ReceiverRegister();
-  Register name = NameRegister();
-  DCHECK(receiver.is(edx));
-  DCHECK(name.is(ecx));
-
-  // Probe the stub cache.
-  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::LOAD_IC));
-  masm->isolate()->stub_cache()->GenerateProbe(
-      masm, flags, receiver, name, ebx, eax);
-
-  // Cache miss: Jump to runtime.
-  GenerateMiss(masm);
-}
-
-
-void LoadIC::GenerateNormal(MacroAssembler* masm) {
-  Register dictionary = eax;
-  DCHECK(!dictionary.is(ReceiverRegister()));
-  DCHECK(!dictionary.is(NameRegister()));
-
-  Label slow;
-
-  __ mov(dictionary,
-         FieldOperand(ReceiverRegister(), JSObject::kPropertiesOffset));
-  GenerateDictionaryLoad(masm, &slow, dictionary, NameRegister(), edi, ebx,
-                         eax);
-  __ ret(0);
-
-  // Dictionary load failed, go slow (but don't miss).
-  __ bind(&slow);
-  GenerateRuntimeGetProperty(masm);
-}
-
-
-static void LoadIC_PushArgs(MacroAssembler* masm) {
-  Register receiver = LoadIC::ReceiverRegister();
-  Register name = LoadIC::NameRegister();
-  DCHECK(!ebx.is(receiver) && !ebx.is(name));
-
-  __ pop(ebx);
-  __ push(receiver);
-  __ push(name);
-  __ push(ebx);
-}
-
-
-void LoadIC::GenerateMiss(MacroAssembler* masm) {
-  // Return address is on the stack.
-  __ IncrementCounter(masm->isolate()->counters()->load_miss(), 1);
-
-  LoadIC_PushArgs(masm);
-
-  // Perform tail call to the entry.
-  ExternalReference ref =
-      ExternalReference(IC_Utility(kLoadIC_Miss), masm->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
-}
-
-
-void LoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
-  // Return address is on the stack.
-  LoadIC_PushArgs(masm);
-
-  // Perform tail call to the entry.
-  __ TailCallRuntime(Runtime::kGetProperty, 2, 1);
-}
-
-
-void KeyedLoadIC::GenerateMiss(MacroAssembler* masm) {
-  // Return address is on the stack.
-  __ IncrementCounter(masm->isolate()->counters()->keyed_load_miss(), 1);
-
-  LoadIC_PushArgs(masm);
-
-  // Perform tail call to the entry.
-  ExternalReference ref =
-      ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate());
-  __ TailCallExternalReference(ref, 2, 1);
-}
-
-
-// IC register specifications
-const Register LoadIC::ReceiverRegister() { return edx; }
-const Register LoadIC::NameRegister() { return ecx; }
-
-
-const Register LoadIC::SlotRegister() {
-  DCHECK(FLAG_vector_ics);
-  return eax;
-}
-
-
-const Register LoadIC::VectorRegister() {
-  DCHECK(FLAG_vector_ics);
-  return ebx;
-}
-
-
-const Register StoreIC::ReceiverRegister() { return edx; }
-const Register StoreIC::NameRegister() { return ecx; }
-const Register StoreIC::ValueRegister() { return eax; }
-
-
-const Register KeyedStoreIC::MapRegister() {
-  return ebx;
-}
-
-
-void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
-  // Return address is on the stack.
-  LoadIC_PushArgs(masm);
-
-  // Perform tail call to the entry.
-  __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1);
-}
-
-
-void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
-  // Return address is on the stack.
-  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
-      Code::ComputeHandlerFlags(Code::STORE_IC));
-  masm->isolate()->stub_cache()->GenerateProbe(
-      masm, flags, ReceiverRegister(), NameRegister(),
-      ebx, no_reg);
-
-  // Cache miss: Jump to runtime.
-  GenerateMiss(masm);
-}
-
-
-static void StoreIC_PushArgs(MacroAssembler* masm) {
-  Register receiver = StoreIC::ReceiverRegister();
-  Register name = StoreIC::NameRegister();
-  Register value = StoreIC::ValueRegister();
-
-  DCHECK(!ebx.is(receiver) && !ebx.is(name) && !ebx.is(value));
-
-  __ pop(ebx);
-  __ push(receiver);
-  __ push(name);
-  __ push(value);
-  __ push(ebx);
-}
-
-
-void StoreIC::GenerateMiss(MacroAssembler* masm) {
-  // Return address is on the stack.
-  StoreIC_PushArgs(masm);
-
-  // Perform tail call to the entry.
-  ExternalReference ref =
-      ExternalReference(IC_Utility(kStoreIC_Miss), masm->isolate());
-  __ TailCallExternalReference(ref, 3, 1);
-}
-
-
-void StoreIC::GenerateNormal(MacroAssembler* masm) {
-  Label restore_miss;
-  Register receiver = ReceiverRegister();
-  Register name = NameRegister();
-  Register value = ValueRegister();
-  Register dictionary = ebx;
-
-  __ mov(dictionary, FieldOperand(receiver, JSObject::kPropertiesOffset));
-
-  // A lot of registers are needed for storing to slow case
-  // objects. Push and restore receiver but rely on
-  // GenerateDictionaryStore preserving the value and name.
-  __ push(receiver);
-  GenerateDictionaryStore(masm, &restore_miss, dictionary, name, value,
-                          receiver, edi);
-  __ Drop(1);
-  Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->store_normal_hit(), 1);
-  __ ret(0);
-
-  __ bind(&restore_miss);
-  __ pop(receiver);
-  __ IncrementCounter(counters->store_normal_miss(), 1);
-  GenerateMiss(masm);
-}
-
-
-void StoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm,
-                                         StrictMode strict_mode) {
-  // Return address is on the stack.
-  DCHECK(!ebx.is(ReceiverRegister()) && !ebx.is(NameRegister()) &&
-         !ebx.is(ValueRegister()));
-  __ pop(ebx);
-  __ push(ReceiverRegister());
-  __ push(NameRegister());
-  __ push(ValueRegister());
-  __ push(Immediate(Smi::FromInt(strict_mode)));
-  __ push(ebx);  // return address
-
-  // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kSetProperty, 4, 1);
-}
-
-
-void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm,
-                                              StrictMode strict_mode) {
-  // Return address is on the stack.
-  DCHECK(!ebx.is(ReceiverRegister()) && !ebx.is(NameRegister()) &&
-         !ebx.is(ValueRegister()));
-  __ pop(ebx);
-  __ push(ReceiverRegister());
-  __ push(NameRegister());
-  __ push(ValueRegister());
-  __ push(Immediate(Smi::FromInt(strict_mode)));
-  __ push(ebx);  // return address
-
-  // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kSetProperty, 4, 1);
-}
-
-
-void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) {
-  // Return address is on the stack.
-  StoreIC_PushArgs(masm);
-
-  // Do tail-call to runtime routine.
-  ExternalReference ref =
-      ExternalReference(IC_Utility(kKeyedStoreIC_Miss), masm->isolate());
-  __ TailCallExternalReference(ref, 3, 1);
-}
-
-
-void StoreIC::GenerateSlow(MacroAssembler* masm) {
-  // Return address is on the stack.
-  StoreIC_PushArgs(masm);
-
-  // Do tail-call to runtime routine.
-  ExternalReference ref(IC_Utility(kStoreIC_Slow), masm->isolate());
-  __ TailCallExternalReference(ref, 3, 1);
-}
-
-
-void KeyedStoreIC::GenerateSlow(MacroAssembler* masm) {
-  // Return address is on the stack.
-  StoreIC_PushArgs(masm);
-
-  // Do tail-call to runtime routine.
-  ExternalReference ref(IC_Utility(kKeyedStoreIC_Slow), masm->isolate());
-  __ TailCallExternalReference(ref, 3, 1);
-}
-
-
-#undef __
-
-
-Condition CompareIC::ComputeCondition(Token::Value op) {
-  switch (op) {
-    case Token::EQ_STRICT:
-    case Token::EQ:
-      return equal;
-    case Token::LT:
-      return less;
-    case Token::GT:
-      return greater;
-    case Token::LTE:
-      return less_equal;
-    case Token::GTE:
-      return greater_equal;
-    default:
-      UNREACHABLE();
-      return no_condition;
-  }
-}
-
-
-bool CompareIC::HasInlinedSmiCode(Address address) {
-  // The address of the instruction following the call.
-  Address test_instruction_address =
-      address + Assembler::kCallTargetAddressOffset;
-
-  // If the instruction following the call is not a test al, nothing
-  // was inlined.
-  return *test_instruction_address == Assembler::kTestAlByte;
-}
-
-
-void PatchInlinedSmiCode(Address address, InlinedSmiCheck check) {
-  // The address of the instruction following the call.
-  Address test_instruction_address =
-      address + Assembler::kCallTargetAddressOffset;
-
-  // If the instruction following the call is not a test al, nothing
-  // was inlined.
-  if (*test_instruction_address != Assembler::kTestAlByte) {
-    DCHECK(*test_instruction_address == Assembler::kNopByte);
-    return;
-  }
-
-  Address delta_address = test_instruction_address + 1;
-  // The delta to the start of the map check instruction and the
-  // condition code uses at the patched jump.
-  uint8_t delta = *reinterpret_cast<uint8_t*>(delta_address);
-  if (FLAG_trace_ic) {
-    PrintF("[  patching ic at %p, test=%p, delta=%d\n",
-           address, test_instruction_address, delta);
-  }
-
-  // Patch with a short conditional jump. Enabling means switching from a short
-  // jump-if-carry/not-carry to jump-if-zero/not-zero, whereas disabling is the
-  // reverse operation of that.
-  Address jmp_address = test_instruction_address - delta;
-  DCHECK((check == ENABLE_INLINED_SMI_CHECK)
-         ? (*jmp_address == Assembler::kJncShortOpcode ||
-            *jmp_address == Assembler::kJcShortOpcode)
-         : (*jmp_address == Assembler::kJnzShortOpcode ||
-            *jmp_address == Assembler::kJzShortOpcode));
-  Condition cc = (check == ENABLE_INLINED_SMI_CHECK)
-      ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero)
-      : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry);
-  *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
-}
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_TARGET_ARCH_IA32