MachineInstr **PhysRegInfo;
bool *PhysRegUsed;
+ void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
+ void HandlePhysRegDef(unsigned Reg, MachineInstr *MI);
+
public:
virtual bool runOnMachineFunction(MachineFunction &MF);
void MarkVirtRegAliveInBlock(VarInfo &VRInfo, const BasicBlock *BB);
void HandleVirtRegUse(VarInfo &VRInfo, MachineBasicBlock *MBB,
MachineInstr *MI);
- void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
- void HandlePhysRegDef(unsigned Reg, MachineInstr *MI);
};
} // End llvm namespace
// a = a op c
unsigned regA = mi->getOperand(0).getAllocatedRegNum();
unsigned regB = mi->getOperand(1).getAllocatedRegNum();
- bool regAisPhysical = regA < MRegisterInfo::FirstVirtualRegister;
- bool regBisPhysical = regB < MRegisterInfo::FirstVirtualRegister;
+
+ assert(regA >= MRegisterInfo::FirstVirtualRegister &&
+ regB >= MRegisterInfo::FirstVirtualRegister &&
+ "cannot update physical register live information");
// first make sure we do not have a use of a in the
// instruction (a = b + a for example) because our
mi->getOperand(i).getAllocatedRegNum() != (int)regA);
}
- const TargetRegisterClass* rc = regAisPhysical ?
- mri_->getRegClass(regA) :
+ const TargetRegisterClass* rc =
mf_->getSSARegMap()->getRegClass(regA);
-
numInstrsAdded += mri_->copyRegToReg(*mbbi, mii, regA, regB, rc);
MachineInstr* prevMi = *(mii - 1);
prevMi->print(std::cerr, *tm_));
// update live variables for regA
- if (regAisPhysical) {
- lv_->HandlePhysRegDef(regA, prevMi);
- }
- else {
- LiveVariables::VarInfo& varInfo = lv_->getVarInfo(regA);
- varInfo.DefInst = prevMi;
- }
+ LiveVariables::VarInfo& varInfo = lv_->getVarInfo(regA);
+ varInfo.DefInst = prevMi;
// update live variables for regB
- if (regBisPhysical) {
- lv_->HandlePhysRegUse(regB, prevMi);
- }
- else {
- if (lv_->removeVirtualRegisterKilled(regB, &*mbbi, mi))
- lv_->addVirtualRegisterKilled(regB, &*mbbi, prevMi);
+ if (lv_->removeVirtualRegisterKilled(regB, &*mbbi, mi))
+ lv_->addVirtualRegisterKilled(regB, &*mbbi, prevMi);
- if (lv_->removeVirtualRegisterDead(regB, &*mbbi, mi))
- lv_->addVirtualRegisterDead(regB, &*mbbi, prevMi);
- }
+ if (lv_->removeVirtualRegisterDead(regB, &*mbbi, mi))
+ lv_->addVirtualRegisterDead(regB, &*mbbi, prevMi);
// replace all occurences of regB with regA
for (unsigned i = 1; i < mi->getNumOperands(); ++i) {