Version 3.5.1.
Fixed setting the readonly flag on the prototype property using the API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
Changed the tools/test.py script to use d8 instead of shell for testing.
Fixed crash in ToBooleanStub when GC happens during invocation.
Enabled automatic unboxing of double arrays.
Performance improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@8751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/heap.cc b/src/heap.cc
index 8dbda27..efdb549 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -3388,17 +3388,22 @@
object_size);
}
- FixedArray* elements = FixedArray::cast(source->elements());
+ FixedArrayBase* elements = FixedArrayBase::cast(source->elements());
FixedArray* properties = FixedArray::cast(source->properties());
// Update elements if necessary.
if (elements->length() > 0) {
Object* elem;
- { MaybeObject* maybe_elem =
- (elements->map() == fixed_cow_array_map()) ?
- elements : CopyFixedArray(elements);
+ { MaybeObject* maybe_elem;
+ if (elements->map() == fixed_cow_array_map()) {
+ maybe_elem = FixedArray::cast(elements);
+ } else if (source->HasFastDoubleElements()) {
+ maybe_elem = CopyFixedDoubleArray(FixedDoubleArray::cast(elements));
+ } else {
+ maybe_elem = CopyFixedArray(FixedArray::cast(elements));
+ }
if (!maybe_elem->ToObject(&elem)) return maybe_elem;
}
- JSObject::cast(clone)->set_elements(FixedArray::cast(elem));
+ JSObject::cast(clone)->set_elements(FixedArrayBase::cast(elem));
}
// Update properties if necessary.
if (properties->length() > 0) {
@@ -3757,6 +3762,23 @@
}
+MaybeObject* Heap::CopyFixedDoubleArrayWithMap(FixedDoubleArray* src,
+ Map* map) {
+ int len = src->length();
+ Object* obj;
+ { MaybeObject* maybe_obj = AllocateRawFixedDoubleArray(len, NOT_TENURED);
+ if (!maybe_obj->ToObject(&obj)) return maybe_obj;
+ }
+ HeapObject* dst = HeapObject::cast(obj);
+ dst->set_map(map);
+ CopyBlock(
+ dst->address() + FixedDoubleArray::kLengthOffset,
+ src->address() + FixedDoubleArray::kLengthOffset,
+ FixedDoubleArray::SizeFor(len) - FixedDoubleArray::kLengthOffset);
+ return obj;
+}
+
+
MaybeObject* Heap::AllocateFixedArray(int length) {
ASSERT(length >= 0);
if (length == 0) return empty_fixed_array();