Version 3.11.7
Get better function names in stack traces.
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@11674 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 3d380a2..95b43f4 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2658,10 +2658,12 @@
void MacroAssembler::CheckFastElements(Register map,
Label* fail,
Label::Distance distance) {
- STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0);
- STATIC_ASSERT(FAST_ELEMENTS == 1);
+ STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
+ STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
+ STATIC_ASSERT(FAST_ELEMENTS == 2);
+ STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3);
cmpb(FieldOperand(map, Map::kBitField2Offset),
- Immediate(Map::kMaximumBitField2FastElementValue));
+ Immediate(Map::kMaximumBitField2FastHoleyElementValue));
j(above, fail, distance);
}
@@ -2669,23 +2671,26 @@
void MacroAssembler::CheckFastObjectElements(Register map,
Label* fail,
Label::Distance distance) {
- STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0);
- STATIC_ASSERT(FAST_ELEMENTS == 1);
+ STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
+ STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
+ STATIC_ASSERT(FAST_ELEMENTS == 2);
+ STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3);
cmpb(FieldOperand(map, Map::kBitField2Offset),
- Immediate(Map::kMaximumBitField2FastSmiOnlyElementValue));
+ Immediate(Map::kMaximumBitField2FastHoleySmiElementValue));
j(below_equal, fail, distance);
cmpb(FieldOperand(map, Map::kBitField2Offset),
- Immediate(Map::kMaximumBitField2FastElementValue));
+ Immediate(Map::kMaximumBitField2FastHoleyElementValue));
j(above, fail, distance);
}
-void MacroAssembler::CheckFastSmiOnlyElements(Register map,
- Label* fail,
- Label::Distance distance) {
- STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0);
+void MacroAssembler::CheckFastSmiElements(Register map,
+ Label* fail,
+ Label::Distance distance) {
+ STATIC_ASSERT(FAST_SMI_ELEMENTS == 0);
+ STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1);
cmpb(FieldOperand(map, Map::kBitField2Offset),
- Immediate(Map::kMaximumBitField2FastSmiOnlyElementValue));
+ Immediate(Map::kMaximumBitField2FastHoleySmiElementValue));
j(above, fail, distance);
}
@@ -2749,24 +2754,18 @@
CompareMapMode mode) {
Cmp(FieldOperand(obj, HeapObject::kMapOffset), map);
if (mode == ALLOW_ELEMENT_TRANSITION_MAPS) {
- Map* transitioned_fast_element_map(
- map->LookupElementsTransitionMap(FAST_ELEMENTS, NULL));
- ASSERT(transitioned_fast_element_map == NULL ||
- map->elements_kind() != FAST_ELEMENTS);
- if (transitioned_fast_element_map != NULL) {
- j(equal, early_success, Label::kNear);
- Cmp(FieldOperand(obj, HeapObject::kMapOffset),
- Handle<Map>(transitioned_fast_element_map));
- }
-
- Map* transitioned_double_map(
- map->LookupElementsTransitionMap(FAST_DOUBLE_ELEMENTS, NULL));
- ASSERT(transitioned_double_map == NULL ||
- map->elements_kind() == FAST_SMI_ONLY_ELEMENTS);
- if (transitioned_double_map != NULL) {
- j(equal, early_success, Label::kNear);
- Cmp(FieldOperand(obj, HeapObject::kMapOffset),
- Handle<Map>(transitioned_double_map));
+ ElementsKind kind = map->elements_kind();
+ if (IsFastElementsKind(kind)) {
+ bool packed = IsFastPackedElementsKind(kind);
+ Map* current_map = *map;
+ while (CanTransitionToMoreGeneralFastElementsKind(kind, packed)) {
+ kind = GetNextMoreGeneralFastElementsKind(kind, packed);
+ current_map = current_map->LookupElementsTransitionMap(kind, NULL);
+ if (!current_map) break;
+ j(equal, early_success, Label::kNear);
+ Cmp(FieldOperand(obj, HeapObject::kMapOffset),
+ Handle<Map>(current_map));
+ }
}
}
}
@@ -4057,27 +4056,38 @@
movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset));
// Check that the function's map is the same as the expected cached map.
- int expected_index =
- Context::GetContextMapIndexFromElementsKind(expected_kind);
- cmpq(map_in_out, Operand(scratch, Context::SlotOffset(expected_index)));
+ movq(scratch, Operand(scratch,
+ Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX)));
+
+ int offset = expected_kind * kPointerSize +
+ FixedArrayBase::kHeaderSize;
+ cmpq(map_in_out, FieldOperand(scratch, offset));
j(not_equal, no_map_match);
// Use the transitioned cached map.
- int trans_index =
- Context::GetContextMapIndexFromElementsKind(transitioned_kind);
- movq(map_in_out, Operand(scratch, Context::SlotOffset(trans_index)));
+ offset = transitioned_kind * kPointerSize +
+ FixedArrayBase::kHeaderSize;
+ movq(map_in_out, FieldOperand(scratch, offset));
}
void MacroAssembler::LoadInitialArrayMap(
- Register function_in, Register scratch, Register map_out) {
+ Register function_in, Register scratch,
+ Register map_out, bool can_have_holes) {
ASSERT(!function_in.is(map_out));
Label done;
movq(map_out, FieldOperand(function_in,
JSFunction::kPrototypeOrInitialMapOffset));
if (!FLAG_smi_only_arrays) {
- LoadTransitionedArrayMapConditional(FAST_SMI_ONLY_ELEMENTS,
- FAST_ELEMENTS,
+ ElementsKind kind = can_have_holes ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS;
+ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
+ kind,
+ map_out,
+ scratch,
+ &done);
+ } else if (can_have_holes) {
+ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
+ FAST_HOLEY_SMI_ELEMENTS,
map_out,
scratch,
&done);