void Value::set_obj(Oop* value) {
// due to garbage collection considerations object immediates
// are always put in a register
GUARANTEE(type() == T_OBJECT || type() == T_ARRAY, "check type");
// assign a register to this value
if (value->is_null()) {
set_where(T_IMMEDIATE);
set_must_be_null();
set_not_on_heap();
_low = 0;
} else {
assign_register();
// move the immediate object into the register
Compiler::code_generator()->move(*this, value);
if (!ObjectHeap::contains_moveable(value->obj())) {
set_not_on_heap();
}
#if ENABLE_COMPILER_TYPE_INFO
FarClass::Raw value_class = value->blueprint();
GUARANTEE(value_class.not_null(), "Sanity");
if (value_class.is_java_class()) {
JavaClass::Raw java_class = value_class.obj();
set_class_id(java_class().class_id());
set_is_exact_type();
}
#else
if (value->is_string()) {
set_is_string();
}
#endif
set_must_be_nonnull();
}
}
void try_to_assign_register() {
assign_register();
}
//we will load the array length into the same register
//when jump into the jit code through a osr entry, so we check
//the location of the VirtualStackFrame whether a register has been
//bundle with it.
void try_to_assign_register() {
if (!is_not_first_time_access()) {
assign_register();
}
}
