Version 3.19.4
Fixed edge case in stack trace formatting. (Chromium issue 237617)
Fixed embedded new-space pointer in LCmpObjectEqAndBranch. (Chromium issue 240032)
Made Object.freeze fast (issue 1858, Chromium issue 115960)
Fixed bogus deopt in BuildEmitDeepCopy for holey arrays. (Chromium issue 242924)
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@14804 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 31796b1..dc30a6c 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2299,6 +2299,7 @@
if (source->IsSmi()) {
Move(dst, Smi::cast(*source));
} else {
+ ASSERT(source->IsHeapObject());
movq(dst, source, RelocInfo::EMBEDDED_OBJECT);
}
}
@@ -2309,6 +2310,7 @@
if (source->IsSmi()) {
Move(dst, Smi::cast(*source));
} else {
+ ASSERT(source->IsHeapObject());
movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT);
movq(dst, kScratchRegister);
}
@@ -2320,7 +2322,8 @@
if (source->IsSmi()) {
Cmp(dst, Smi::cast(*source));
} else {
- Move(kScratchRegister, source);
+ ASSERT(source->IsHeapObject());
+ movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT);
cmpq(dst, kScratchRegister);
}
}
@@ -2364,6 +2367,19 @@
}
+void MacroAssembler::CmpHeapObject(Register reg, Handle<HeapObject> object) {
+ ALLOW_HANDLE_DEREF(isolate(), "using raw address");
+ if (isolate()->heap()->InNewSpace(*object)) {
+ Handle<JSGlobalPropertyCell> cell =
+ isolate()->factory()->NewJSGlobalPropertyCell(object);
+ movq(kScratchRegister, cell, RelocInfo::GLOBAL_PROPERTY_CELL);
+ cmpq(reg, Operand(kScratchRegister, 0));
+ } else {
+ Cmp(reg, object);
+ }
+}
+
+
void MacroAssembler::PushHeapObject(Handle<HeapObject> object) {
ALLOW_HANDLE_DEREF(isolate(), "using raw address");
if (isolate()->heap()->InNewSpace(*object)) {
@@ -2853,38 +2869,21 @@
void MacroAssembler::CompareMap(Register obj,
Handle<Map> map,
- Label* early_success,
- CompareMapMode mode) {
+ Label* early_success) {
Cmp(FieldOperand(obj, HeapObject::kMapOffset), map);
- if (mode == ALLOW_ELEMENT_TRANSITION_MAPS) {
- 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);
- if (!current_map) break;
- j(equal, early_success, Label::kNear);
- Cmp(FieldOperand(obj, HeapObject::kMapOffset),
- Handle<Map>(current_map));
- }
- }
- }
}
void MacroAssembler::CheckMap(Register obj,
Handle<Map> map,
Label* fail,
- SmiCheckType smi_check_type,
- CompareMapMode mode) {
+ SmiCheckType smi_check_type) {
if (smi_check_type == DO_SMI_CHECK) {
JumpIfSmi(obj, fail);
}
Label success;
- CompareMap(obj, map, &success, mode);
+ CompareMap(obj, map, &success);
j(not_equal, fail);
bind(&success);
}