public DeoptimizationAction decodeDeoptAction(Constant constant) {
HotSpotVMConfig config = runtime.getConfig();
int actionValue =
((~constant.asInt()) >> config.deoptimizationActionShift)
& intMaskRight(config.deoptimizationActionBits);
DeoptimizationAction action = convertDeoptAction(actionValue);
return action;
}
@Override
public Constant encodeDeoptActionAndReason(
DeoptimizationAction action, DeoptimizationReason reason, int debugId) {
HotSpotVMConfig config = runtime.getConfig();
int actionValue = convertDeoptAction(action);
int reasonValue = convertDeoptReason(reason);
int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits);
Constant c =
Constant.forInt(
~((debugValue << config.deoptimizationDebugIdShift)
| (reasonValue << config.deoptimizationReasonShift)
| (actionValue << config.deoptimizationActionShift)));
assert c.asInt() < 0;
return c;
}
public int decodeDebugId(Constant constant) {
HotSpotVMConfig config = runtime.getConfig();
return ((~constant.asInt()) >> config.deoptimizationDebugIdShift)
& intMaskRight(config.deoptimizationDebugIdBits);
}