JSObject *
BaselineInspector::commonGetPropFunction(jsbytecode *pc, Shape **lastProperty, JSFunction **commonGetter)
{
const ICEntry &entry = icEntryFromPC(pc);
for (ICStub *stub = entry.firstStub(); stub; stub = stub->next()) {
if (stub->isGetProp_CallScripted() || stub->isGetProp_CallNative()) {
ICGetPropCallGetter *nstub = static_cast<ICGetPropCallGetter *>(stub);
*lastProperty = nstub->holderShape();
*commonGetter = nstub->getter();
return nstub->holder();
}
}
return nullptr;
}
bool
BaselineInspector::commonGetPropFunction(jsbytecode* pc, JSObject** holder, Shape** holderShape,
JSFunction** commonGetter, Shape** globalShape,
bool* isOwnProperty,
ReceiverVector& receivers,
ObjectGroupVector& convertUnboxedGroups)
{
if (!hasBaselineScript())
return false;
MOZ_ASSERT(receivers.empty());
MOZ_ASSERT(convertUnboxedGroups.empty());
*holder = nullptr;
const ICEntry& entry = icEntryFromPC(pc);
for (ICStub* stub = entry.firstStub(); stub; stub = stub->next()) {
if (stub->isGetProp_CallScripted() ||
stub->isGetProp_CallNative() ||
stub->isGetProp_CallNativeGlobal())
{
ICGetPropCallGetter* nstub = static_cast<ICGetPropCallGetter*>(stub);
bool isOwn = nstub->isOwnGetter();
if (!isOwn && !AddReceiver(nstub->receiverGuard(), receivers, convertUnboxedGroups))
return false;
if (!*holder) {
*holder = nstub->holder();
*holderShape = nstub->holderShape();
*commonGetter = nstub->getter();
*globalShape = GlobalShapeForGetPropFunction(nstub);
*isOwnProperty = isOwn;
} else if (nstub->holderShape() != *holderShape ||
GlobalShapeForGetPropFunction(nstub) != *globalShape ||
isOwn != *isOwnProperty)
{
return false;
} else {
MOZ_ASSERT(*commonGetter == nstub->getter());
}
} else if (stub->isGetProp_Fallback()) {
// If we have an unoptimizable access, don't try to optimize.
if (stub->toGetProp_Fallback()->hadUnoptimizableAccess())
return false;
} else if (stub->isGetName_Fallback()) {
if (stub->toGetName_Fallback()->hadUnoptimizableAccess())
return false;
} else {
return false;
}
}
if (!*holder)
return false;
MOZ_ASSERT(*isOwnProperty == (receivers.empty() && convertUnboxedGroups.empty()));
return true;
}
JSObject *
BaselineInspector::commonGetPropFunction(jsbytecode *pc, Shape **lastProperty, JSFunction **commonGetter,
Shape **globalShape)
{
if (!hasBaselineScript())
return nullptr;
const ICEntry &entry = icEntryFromPC(pc);
JSObject* holder = nullptr;
Shape *holderShape = nullptr;
JSFunction *getter = nullptr;
Shape *global = nullptr;
for (ICStub *stub = entry.firstStub(); stub; stub = stub->next()) {
if (stub->isGetProp_CallScripted() ||
stub->isGetProp_CallNative() ||
stub->isGetProp_CallNativePrototype())
{
ICGetPropCallGetter *nstub = static_cast<ICGetPropCallGetter *>(stub);
if (!holder) {
holder = nstub->holder();
holderShape = nstub->holderShape();
getter = nstub->getter();
global = GlobalShapeForGetPropFunction(nstub);
} else if (nstub->holderShape() != holderShape ||
GlobalShapeForGetPropFunction(nstub) != global)
{
return nullptr;
} else {
MOZ_ASSERT(getter == nstub->getter());
}
} else if (stub->isGetProp_Fallback() &&
stub->toGetProp_Fallback()->hadUnoptimizableAccess())
{
// We have an unoptimizable access, so don't try to optimize.
return nullptr;
}
}
*lastProperty = holderShape;
*commonGetter = getter;
*globalShape = global;
return holder;
}
