Version 2.2.13.
Implement Object.getOwnPropertyDescriptor for element indices and strings (issue 599).
Fix bug for windows 64 bit C calls from generated code.
Add new scons flag unalignedaccesses for arm builds.
Performance improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@4756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/objects-inl.h b/src/objects-inl.h
index d82d73e..c10c930 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -759,7 +759,8 @@
ASSERT(mode == SKIP_WRITE_BARRIER); \
ASSERT(Heap::InNewSpace(object) || \
!Heap::InNewSpace(READ_FIELD(object, offset)) || \
- Page::IsRSetSet(object->address(), offset)); \
+ Page::FromAddress(object->address())-> \
+ IsRegionDirty(object->address() + offset)); \
}
#define READ_DOUBLE_FIELD(p, offset) \
@@ -1045,6 +1046,10 @@
void HeapObject::VerifyObjectField(int offset) {
VerifyPointer(READ_FIELD(this, offset));
}
+
+void HeapObject::VerifySmiField(int offset) {
+ ASSERT(READ_FIELD(this, offset)->IsSmi());
+}
#endif
@@ -1064,7 +1069,7 @@
void HeapObject::set_map_word(MapWord map_word) {
- // WRITE_FIELD does not update the remembered set, but there is no need
+ // WRITE_FIELD does not invoke write barrier, but there is no need
// here.
WRITE_FIELD(this, kMapOffset, reinterpret_cast<Object*>(map_word.value_));
}
@@ -1162,16 +1167,16 @@
ACCESSORS(JSObject, properties, FixedArray, kPropertiesOffset)
-Array* JSObject::elements() {
+HeapObject* JSObject::elements() {
Object* array = READ_FIELD(this, kElementsOffset);
// In the assert below Dictionary is covered under FixedArray.
ASSERT(array->IsFixedArray() || array->IsPixelArray() ||
array->IsExternalArray());
- return reinterpret_cast<Array*>(array);
+ return reinterpret_cast<HeapObject*>(array);
}
-void JSObject::set_elements(Array* value, WriteBarrierMode mode) {
+void JSObject::set_elements(HeapObject* value, WriteBarrierMode mode) {
// In the assert below Dictionary is covered under FixedArray.
ASSERT(value->IsFixedArray() || value->IsPixelArray() ||
value->IsExternalArray());
@@ -1342,15 +1347,15 @@
}
-bool Array::IndexFromObject(Object* object, uint32_t* index) {
- if (object->IsSmi()) {
- int value = Smi::cast(object)->value();
+bool Object::ToArrayIndex(uint32_t* index) {
+ if (IsSmi()) {
+ int value = Smi::cast(this)->value();
if (value < 0) return false;
*index = value;
return true;
}
- if (object->IsHeapNumber()) {
- double value = HeapNumber::cast(object)->value();
+ if (IsHeapNumber()) {
+ double value = HeapNumber::cast(this)->value();
uint32_t uint_value = static_cast<uint32_t>(value);
if (value == static_cast<double>(uint_value)) {
*index = uint_value;
@@ -1665,7 +1670,11 @@
}
-INT_ACCESSORS(Array, length, kLengthOffset)
+SMI_ACCESSORS(FixedArray, length, kLengthOffset)
+SMI_ACCESSORS(ByteArray, length, kLengthOffset)
+
+INT_ACCESSORS(PixelArray, length, kLengthOffset)
+INT_ACCESSORS(ExternalArray, length, kLengthOffset)
SMI_ACCESSORS(String, length, kLengthOffset)
@@ -1678,6 +1687,9 @@
void String::set_hash_field(uint32_t value) {
WRITE_UINT32_FIELD(this, kHashFieldOffset, value);
+#if V8_HOST_ARCH_64_BIT
+ WRITE_UINT32_FIELD(this, kHashFieldOffset + kIntSize, 0);
+#endif
}
@@ -2456,22 +2468,65 @@
try_full_codegen,
kTryFullCodegen)
-INT_ACCESSORS(SharedFunctionInfo, length, kLengthOffset)
-INT_ACCESSORS(SharedFunctionInfo, formal_parameter_count,
+#if V8_HOST_ARCH_32_BIT
+SMI_ACCESSORS(SharedFunctionInfo, length, kLengthOffset)
+SMI_ACCESSORS(SharedFunctionInfo, formal_parameter_count,
kFormalParameterCountOffset)
-INT_ACCESSORS(SharedFunctionInfo, expected_nof_properties,
+SMI_ACCESSORS(SharedFunctionInfo, expected_nof_properties,
kExpectedNofPropertiesOffset)
-INT_ACCESSORS(SharedFunctionInfo, num_literals, kNumLiteralsOffset)
-INT_ACCESSORS(SharedFunctionInfo, start_position_and_type,
+SMI_ACCESSORS(SharedFunctionInfo, num_literals, kNumLiteralsOffset)
+SMI_ACCESSORS(SharedFunctionInfo, start_position_and_type,
kStartPositionAndTypeOffset)
-INT_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset)
-INT_ACCESSORS(SharedFunctionInfo, function_token_position,
+SMI_ACCESSORS(SharedFunctionInfo, end_position, kEndPositionOffset)
+SMI_ACCESSORS(SharedFunctionInfo, function_token_position,
kFunctionTokenPositionOffset)
-INT_ACCESSORS(SharedFunctionInfo, compiler_hints,
+SMI_ACCESSORS(SharedFunctionInfo, compiler_hints,
kCompilerHintsOffset)
-INT_ACCESSORS(SharedFunctionInfo, this_property_assignments_count,
+SMI_ACCESSORS(SharedFunctionInfo, this_property_assignments_count,
kThisPropertyAssignmentsCountOffset)
+#else
+#define PSEUDO_SMI_ACCESSORS_LO(holder, name, offset) \
+ int holder::name() { \
+ int value = READ_INT_FIELD(this, offset); \
+ ASSERT(kHeapObjectTag == 1); \
+ ASSERT((value & kHeapObjectTag) == 0); \
+ return value >> 1; \
+ } \
+ void holder::set_##name(int value) { \
+ ASSERT(kHeapObjectTag == 1); \
+ ASSERT((value & 0xC0000000) == 0xC0000000 || \
+ (value & 0xC0000000) == 0x000000000); \
+ WRITE_INT_FIELD(this, \
+ offset, \
+ (value << 1) & ~kHeapObjectTag); \
+ }
+
+#define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset) \
+ INT_ACCESSORS(holder, name, offset)
+
+
+
+PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, length, kLengthOffset)
+PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, formal_parameter_count,
+ kFormalParameterCountOffset)
+
+PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, expected_nof_properties,
+ kExpectedNofPropertiesOffset)
+PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, num_literals, kNumLiteralsOffset)
+
+PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, start_position_and_type,
+ kStartPositionAndTypeOffset)
+PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, end_position, kEndPositionOffset)
+
+PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, function_token_position,
+ kFunctionTokenPositionOffset)
+PSEUDO_SMI_ACCESSORS_HI(SharedFunctionInfo, compiler_hints,
+ kCompilerHintsOffset)
+
+PSEUDO_SMI_ACCESSORS_LO(SharedFunctionInfo, this_property_assignments_count,
+ kThisPropertyAssignmentsCountOffset)
+#endif
ACCESSORS(CodeCache, default_cache, FixedArray, kDefaultCacheOffset)
ACCESSORS(CodeCache, normal_type_cache, Object, kNormalTypeCacheOffset)
@@ -2785,7 +2840,7 @@
JSObject::ElementsKind JSObject::GetElementsKind() {
- Array* array = elements();
+ HeapObject* array = elements();
if (array->IsFixedArray()) {
// FAST_ELEMENTS or DICTIONARY_ELEMENTS are both stored in a FixedArray.
if (array->map() == Heap::fixed_array_map()) {
@@ -2908,15 +2963,20 @@
}
+bool String::IsHashFieldComputed(uint32_t field) {
+ return (field & kHashNotComputedMask) == 0;
+}
+
+
bool String::HasHashCode() {
- return (hash_field() & kHashComputedMask) != 0;
+ return IsHashFieldComputed(hash_field());
}
uint32_t String::Hash() {
// Fast case: has hash code already been computed?
uint32_t field = hash_field();
- if (field & kHashComputedMask) return field >> kHashShift;
+ if (IsHashFieldComputed(field)) return field >> kHashShift;
// Slow case: compute hash code and set it.
return ComputeAndSetHash();
}
@@ -2989,7 +3049,7 @@
bool String::AsArrayIndex(uint32_t* index) {
uint32_t field = hash_field();
- if ((field & kHashComputedMask) && !(field & kIsArrayIndexMask)) return false;
+ if (IsHashFieldComputed(field) && !(field & kIsArrayIndexMask)) return false;
return SlowAsArrayIndex(index);
}
@@ -3113,7 +3173,7 @@
void JSArray::EnsureSize(int required_size) {
ASSERT(HasFastElements());
- Array* elts = elements();
+ FixedArray* elts = FixedArray::cast(elements());
const int kArraySizeThatFitsComfortablyInNewSpace = 128;
if (elts->length() < required_size) {
// Doubling in size would be overkill, but leave some slack to avoid