void LIRGenerator::do_MonitorEnter(MonitorEnter* x) {
assert(x->is_pinned(),"");
LIRItem obj(x->obj(), this);
obj.load_item();
set_no_result(x);
// "lock" stores the address of the monitor stack slot, so this is not an oop
LIR_Opr lock = new_register(T_INT);
// Need a scratch register for biased locking on x86
LIR_Opr scratch = LIR_OprFact::illegalOpr;
if (UseBiasedLocking) {
scratch = new_register(T_INT);
}
CodeEmitInfo* info_for_exception = NULL;
if (x->needs_null_check()) {
info_for_exception = state_for(x);
}
// this CodeEmitInfo must not have the xhandlers because here the
// object is already locked (xhandlers expect object to be unlocked)
CodeEmitInfo* info = state_for(x, x->state(), true);
monitor_enter(obj.result(), lock, syncTempOpr(), scratch,
x->monitor_no(), info_for_exception, info);
}
void LIRGenerator::do_MonitorEnter(MonitorEnter* x) {
assert(x->is_root(),"");
LIRItem obj(x->obj(), this);
obj.load_item();
set_no_result(x);
LIR_Opr lock = FrameMap::G1_opr;
LIR_Opr scratch = FrameMap::G3_opr;
LIR_Opr hdr = FrameMap::G4_opr;
CodeEmitInfo* info_for_exception = NULL;
if (x->needs_null_check()) {
info_for_exception = state_for(x, x->lock_stack_before());
}
// this CodeEmitInfo must not have the xhandlers because here the
// object is already locked (xhandlers expects object to be unlocked)
CodeEmitInfo* info = state_for(x, x->state(), true);
monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info);
}
