const TargetMachine* tm_;
const MRegisterInfo* mri_;
LiveIntervals* li_;
+ bool *PhysRegsUsed;
/// handled_ - Intervals are added to the handled_ set in the order of their
/// start value. This is uses for backtracking.
mri_ = tm_->getRegisterInfo();
li_ = &getAnalysis<LiveIntervals>();
+ PhysRegsUsed = new bool[mri_->getNumRegs()];
+ std::fill(PhysRegsUsed, PhysRegsUsed+mri_->getNumRegs(), false);
+ fn.setUsedPhysRegs(PhysRegsUsed);
+
if (!prt_.get()) prt_.reset(new PhysRegTracker(*mri_));
vrm_.reset(new VirtRegMap(*mf_));
if (!spiller_.get()) spiller_.reset(createSpiller());
linearScan();
+ // Rewrite spill code and update the PhysRegsUsed set.
spiller_->runOnMachineFunction(*mf_, *vrm_);
vrm_.reset(); // Free the VirtRegMap
"interval sets should be empty on initialization");
for (LiveIntervals::iterator i = li_->begin(), e = li_->end(); i != e; ++i) {
- if (MRegisterInfo::isPhysicalRegister(i->second.reg))
+ if (MRegisterInfo::isPhysicalRegister(i->second.reg)) {
+ PhysRegsUsed[i->second.reg] = true;
fixed_.push_back(std::make_pair(&i->second, i->second.begin()));
- else
+ } else
unhandled_.push(&i->second);
}
}
DEBUG(std::cerr << "\tassigning stack slot at interval "<< *cur << ":\n");
- float minWeight = HUGE_VAL;
+ float minWeight = float(HUGE_VAL);
unsigned minReg = 0;
const TargetRegisterClass* rc = mf_->getSSARegMap()->getRegClass(cur->reg);
for (TargetRegisterClass::iterator i = rc->allocation_order_begin(*mf_),