2631c9f5e3
Reason for revert: This was probably an infrastructure problem caused by the mac ninja/goma switch. Original issue's description: > Revert of Protect the emptiness of Array prototype elements with a PropertyCell. (patchset #7 id:120001 of https://codereview.chromium.org/1092043002/) > > Reason for revert: > MAC GCSTRESS failure on new test. > > Original issue's description: > > Protect the emptiness of Array prototype elements with a PropertyCell. > > > > Not just emptiness, but also a particular structure. > > > > BUG=v8:4044 > > LOG=N > > TBR=jkummerow@chromium.org > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=v8:4044 TBR=jkummerow@chromium.org,mvstanton@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=v8:4044 Review URL: https://codereview.chromium.org/1052253003 Cr-Commit-Position: refs/heads/master@{#28000}
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
// Copyright 2015 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.
|
|
|
|
#ifndef V8_DEPENDENCIES_H_
|
|
#define V8_DEPENDENCIES_H_
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
// Collects dependencies for this compilation, e.g. assumptions about
|
|
// stable maps, constant globals, etc.
|
|
class CompilationDependencies {
|
|
public:
|
|
CompilationDependencies(Isolate* isolate, Zone* zone)
|
|
: isolate_(isolate),
|
|
zone_(zone),
|
|
object_wrapper_(Handle<Foreign>::null()),
|
|
aborted_(false) {
|
|
std::fill_n(groups_, DependentCode::kGroupCount, nullptr);
|
|
}
|
|
|
|
void Insert(DependentCode::DependencyGroup group, Handle<HeapObject> handle);
|
|
|
|
void AssumeInitialMapCantChange(Handle<Map> map) {
|
|
Insert(DependentCode::kInitialMapChangedGroup, map);
|
|
}
|
|
void AssumeFieldType(Handle<Map> map) {
|
|
Insert(DependentCode::kFieldTypeGroup, map);
|
|
}
|
|
void AssumePropertyCell(Handle<PropertyCell> cell) {
|
|
Insert(DependentCode::kPropertyCellChangedGroup, cell);
|
|
}
|
|
void AssumeTenuringDecision(Handle<AllocationSite> site) {
|
|
Insert(DependentCode::kAllocationSiteTenuringChangedGroup, site);
|
|
}
|
|
void AssumeTransitionStable(Handle<AllocationSite> site);
|
|
|
|
void Commit(Handle<Code> code);
|
|
void Rollback();
|
|
void Abort() { aborted_ = true; }
|
|
bool HasAborted() const { return aborted_; }
|
|
|
|
bool IsEmpty() const {
|
|
for (int i = 0; i < DependentCode::kGroupCount; i++) {
|
|
if (groups_[i]) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
Isolate* isolate_;
|
|
Zone* zone_;
|
|
Handle<Foreign> object_wrapper_;
|
|
bool aborted_;
|
|
ZoneList<Handle<HeapObject> >* groups_[DependentCode::kGroupCount];
|
|
|
|
DependentCode* Get(Handle<Object> object);
|
|
void Set(Handle<Object> object, Handle<DependentCode> dep);
|
|
};
|
|
}
|
|
} // namespace v8::internal
|
|
|
|
#endif // V8_DEPENDENCIES_H_
|