// Conservatively decode the trap_state of a ciProfileData.
int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
if (trap_count(reason) == 0) {
// Impossible for this trap to have occurred, regardless of trap_state.
// Note: This happens if the MDO is empty.
return 0;
} else if (data == NULL) {
// No profile here, not even an extra_data record allocated on the fly.
// If there are empty extra_data records, and there had been a trap,
// there would have been a non-null data pointer. If there are no
// free extra_data records, we must return a conservative -1.
return (_saw_free_extra_data? 0: -1);
} else {
return Deoptimization::trap_state_has_reason(data->trap_state(), reason);
}
}
// Conservatively decode the trap_state of a ciProfileData.
int ciMethodData::has_trap_at(ciProfileData* data, int reason) {
typedef Deoptimization::DeoptReason DR_t;
int per_bc_reason
= Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason);
if (trap_count(reason) == 0) {
// Impossible for this trap to have occurred, regardless of trap_state.
// Note: This happens if the MDO is empty.
return 0;
} else if (per_bc_reason == Deoptimization::Reason_none) {
// We cannot conclude anything; a trap happened somewhere, maybe here.
return -1;
} else if (data == NULL) {
// No profile here, not even an extra_data record allocated on the fly.
// If there are empty extra_data records, and there had been a trap,
// there would have been a non-null data pointer. If there are no
// free extra_data records, we must return a conservative -1.
if (_saw_free_extra_data)
return 0; // Q.E.D.
else
return -1; // bail with a conservative answer
} else {
return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason);
}
}
