void C2Compiler::initialize_runtime() {
// Check assumptions used while running ADLC
Compile::adlc_verification();
assert(REG_COUNT <= ConcreteRegisterImpl::number_of_registers, "incompatible register counts");
for (int i = 0; i < ConcreteRegisterImpl::number_of_registers ; i++ ) {
OptoReg::vm2opto[i] = OptoReg::Bad;
}
for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(REG_COUNT); i = OptoReg::add(i,1) ) {
VMReg r = OptoReg::as_VMReg(i);
if (r->is_valid()) {
OptoReg::vm2opto[r->value()] = i;
}
}
// Check that runtime and architecture description agree on callee-saved-floats
bool callee_saved_floats = false;
for( OptoReg::Name i=OptoReg::Name(0); i<OptoReg::Name(_last_Mach_Reg); i = OptoReg::add(i,1) ) {
// Is there a callee-saved float or double?
if( register_save_policy[i] == 'E' /* callee-saved */ &&
(register_save_type[i] == Op_RegF || register_save_type[i] == Op_RegD) ) {
callee_saved_floats = true;
}
}
DEBUG_ONLY( Node::init_NodeProperty(); )
// Return true if single register, even if the pair is really just adjacent stack slots
bool is_single_reg() const {
return (_first->is_valid()) && (_first->value() + 1 == _second->value());
}