/*
* Check if the current predicted type for the location in ii is specific
* enough for what the current opcode wants. If not, return false.
*/
bool RegionFormer::consumeInput(int i, const InputInfo& ii) {
if (ii.dontGuard) return true;
auto const type = irgen::predictedTypeFromLocation(m_irgs, ii.loc);
if (m_profiling && type <= TBoxedCell &&
(m_region->blocks().size() > 1 || !m_region->entry()->empty())) {
// We don't want side exits when profiling, so only allow instructions that
// consume refs at the beginning of the region.
return false;
}
if (!ii.dontBreak && !type.isKnownDataType()) {
// Trying to consume a value without a precise enough type.
FTRACE(1, "selectTracelet: {} tried to consume {}\n",
m_inst.toString(), m_inst.inputs[i].pretty());
return false;
}
if (!(type <= TBoxedCell) || m_inst.ignoreInnerType || ii.dontGuardInner) {
return true;
}
if (!type.inner().isKnownDataType()) {
// Trying to consume a boxed value without a guess for the inner type.
FTRACE(1, "selectTracelet: {} tried to consume ref {}\n",
m_inst.toString(), m_inst.inputs[i].pretty());
return false;
}
return true;
}
Type Type::relaxToGuardable() const {
auto const ty = unspecialize();
if (ty.isKnownDataType()) return ty;
if (ty.subtypeOf(UncountedInit)) return Type::UncountedInit;
if (ty.subtypeOf(Uncounted)) return Type::Uncounted;
if (ty.subtypeOf(Cell)) return Type::Cell;
if (ty.subtypeOf(BoxedCell)) return Type::BoxedCell;
if (ty.subtypeOf(Gen)) return Type::Gen;
not_reached();
}
void
IRTranslator::translateLtGtOp(const NormalizedInstruction& i) {
auto const op = i.op();
assert(op == Op::Lt || op == Op::Lte || op == Op::Gt || op == Op::Gte);
auto leftType = m_hhbcTrans.topType(1, DataTypeGeneric);
auto rightType = m_hhbcTrans.topType(0, DataTypeGeneric);
if (!leftType.isKnownDataType() || !rightType.isKnownDataType()) {
HHIR_UNIMPLEMENTED(LtGtOp-UnknownInput);
}
bool ok =
leftType.subtypeOfAny (Type::Null, Type::Bool, Type::Int, Type::Dbl) &&
rightType.subtypeOfAny(Type::Null, Type::Bool, Type::Int, Type::Dbl);
HHIR_UNIMPLEMENTED_WHEN(!ok, LtGtOp);
switch (op) {
case Op::Lt : HHIR_EMIT(Lt);
case Op::Lte : HHIR_EMIT(Lte);
case Op::Gt : HHIR_EMIT(Gt);
case Op::Gte : HHIR_EMIT(Gte);
default : HHIR_UNIMPLEMENTED(LtGtOp);
}
}
SSATmp* TraceBuilder::preOptimizeStLoc(IRInstruction* inst) {
auto const curType = getLocalType(inst->getExtra<StLoc>()->locId);
auto const newType = inst->getSrc(1)->type();
assert(inst->getTypeParam().equals(Type::None));
// There's no need to store the type if it's going to be the same
// KindOfFoo. We still have to store string types because we don't
// guard on KindOfStaticString vs. KindOfString.
auto const bothBoxed = curType.isBoxed() && newType.isBoxed();
auto const sameUnboxed = curType != Type::None && // TODO(#2135185)
curType.isKnownDataType() &&
curType.equals(newType) && !curType.isString();
if (bothBoxed || sameUnboxed) {
inst->setOpcode(StLocNT);
}
return nullptr;
}
DataType Type::toDataType() const {
assert(!isPtr());
assert(isKnownDataType());
// Order is important here: types must progress from more specific
// to less specific to return the most specific DataType.
if (subtypeOf(Uninit)) return KindOfUninit;
if (subtypeOf(InitNull)) return KindOfNull;
if (subtypeOf(Bool)) return KindOfBoolean;
if (subtypeOf(Int)) return KindOfInt64;
if (subtypeOf(Dbl)) return KindOfDouble;
if (subtypeOf(StaticStr)) return KindOfStaticString;
if (subtypeOf(Str)) return KindOfString;
if (subtypeOf(Arr)) return KindOfArray;
if (subtypeOf(Obj)) return KindOfObject;
if (subtypeOf(Res)) return KindOfResource;
if (subtypeOf(BoxedCell)) return KindOfRef;
if (subtypeOf(Cls)) return KindOfClass;
always_assert_flog(false,
"Bad Type {} in Type::toDataType()", *this);
}
DataType Type::toDataType() const {
assertx(!maybe(TPtrToGen) || m_bits == kBottom);
assertx(isKnownDataType());
// Order is important here: types must progress from more specific
// to less specific to return the most specific DataType.
if (*this <= TUninit) return KindOfUninit;
if (*this <= TInitNull) return KindOfNull;
if (*this <= TBool) return KindOfBoolean;
if (*this <= TInt) return KindOfInt64;
if (*this <= TDbl) return KindOfDouble;
if (*this <= TStaticStr) return KindOfStaticString;
if (*this <= TStr) return KindOfString;
if (*this <= TArr) return KindOfArray;
if (*this <= TObj) return KindOfObject;
if (*this <= TRes) return KindOfResource;
if (*this <= TBoxedCell) return KindOfRef;
if (*this <= TCls) return KindOfClass;
always_assert_flog(false,
"Bad Type {} in Type::toDataType()", *this);
}
Type ldRefReturn(Type typeParam) {
assert(typeParam.notBoxed());
// Guarding on specialized types and uncommon unions like {Int|Bool} is
// expensive enough that we only want to do it in situations where we've
// manually confirmed the benefit.
if (typeParam.strictSubtypeOf(Type::Obj) &&
typeParam.getClass()->attrs() & AttrFinal &&
typeParam.getClass()->isCollectionClass()) {
/*
* This case is needed for the minstr-translator.
* see MInstrTranslator::checkMIState().
*/
return typeParam;
}
auto const type = typeParam.unspecialize();
if (type.isKnownDataType()) return type;
if (type <= Type::UncountedInit) return Type::UncountedInit;
if (type <= Type::Uncounted) return Type::Uncounted;
always_assert(type <= Type::Cell);
return Type::InitCell;
}