void set_instruction(Value value) {
_value = value;
_result = LIR_OprFact::illegalOpr;
if (_value != NULL) {
_gen->walk(_value);
_result = _value->operand();
}
}
LIR_Opr result() {
assert(_destroys_register==not_destroyed||(!_result->is_register()||_result->is_virtual()),
"shouldn't use set_destroys_register with physical regsiters");
if(_destroys_register==awaiting_copy&&_result->is_register()){
LIR_Opr new_result=_gen->new_register(type())->set_destroyed();
gen()->lir()->move(_result, new_result);
_destroys_register = destroyed;
_result=new_result;
}
return _result;
}
LIR_Opr result() {
assert(!_destroys_register || (!_result->is_register() || _result->is_virtual()),
"shouldn't use set_destroys_register with physical regsiters");
if (_destroys_register && _result->is_register()) {
if (_new_result->is_illegal()) {
_new_result = _gen->new_register(type());
gen()->lir()->move(_result, _new_result);
}
return _new_result;
} else {
return _result;
}
return _result;
}
