MIRType
BaselineInspector::expectedResultType(jsbytecode *pc)
{
// Look at the IC entries for this op to guess what type it will produce,
// returning MIRType_None otherwise.
ICStub *stub = monomorphicStub(pc);
if (!stub)
return MIRType_None;
switch (stub->kind()) {
case ICStub::BinaryArith_Int32:
if (stub->toBinaryArith_Int32()->allowDouble())
return MIRType_Double;
return MIRType_Int32;
case ICStub::BinaryArith_BooleanWithInt32:
case ICStub::UnaryArith_Int32:
case ICStub::BinaryArith_DoubleWithInt32:
return MIRType_Int32;
case ICStub::BinaryArith_Double:
case ICStub::UnaryArith_Double:
return MIRType_Double;
case ICStub::BinaryArith_StringConcat:
case ICStub::BinaryArith_StringObjectConcat:
return MIRType_String;
default:
return MIRType_None;
}
}
MIRType
BaselineInspector::expectedResultType(jsbytecode* pc)
{
// Look at the IC entries for this op to guess what type it will produce,
// returning MIRType::None otherwise. Note that IonBuilder may call this
// for bytecode ops that are unreachable and don't have a Baseline IC, see
// comment in monomorphicStub.
ICStub* stub = monomorphicStub(pc);
if (!stub)
return MIRType::None;
switch (stub->kind()) {
case ICStub::BinaryArith_Int32:
if (stub->toBinaryArith_Int32()->allowDouble())
return MIRType::Double;
return MIRType::Int32;
case ICStub::BinaryArith_BooleanWithInt32:
case ICStub::UnaryArith_Int32:
case ICStub::BinaryArith_DoubleWithInt32:
return MIRType::Int32;
case ICStub::BinaryArith_Double:
case ICStub::UnaryArith_Double:
return MIRType::Double;
case ICStub::BinaryArith_StringConcat:
case ICStub::BinaryArith_StringObjectConcat:
return MIRType::String;
default:
return MIRType::None;
}
}
