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Unified Diff: src/x87/ic-x87.cc

Issue 500923002: x87: Move IC code into a subdir and move ic-compilation related code from stub-cache into ic-compil… (Closed) Base URL: https://chromium.googlesource.com/external/v8.git@bleeding_edge
Patch Set: Created 6 years, 4 months ago
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Index: src/x87/ic-x87.cc
diff --git a/src/x87/ic-x87.cc b/src/x87/ic-x87.cc
deleted file mode 100644
index 4f7d810133539a5fd6b4927056eea59faa9ee9e7..0000000000000000000000000000000000000000
--- a/src/x87/ic-x87.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_X87
-
-#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);
-}
-
-
-// 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);
- __ 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);
- __ 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, 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,
- &transition_double_elements, false);
- 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_X87
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