lib/CodeGen/TwoAddressInstructionPass.cpp

139   bool isProfitableToConv3Addr(unsigned RegA, unsigned RegB);
143                           unsigned RegA, unsigned RegB, unsigned Dist);
561 regsAreCompatible(unsigned RegA, unsigned RegB, const TargetRegisterInfo *TRI) {
562   if (RegA == RegB)
564   if (!RegA || !RegB)
566   return TRI->regsOverlap(RegA, RegB);
627     // -RegB is not tied to a register and RegC is compatible with RegA.
633     // -RegC is not tied to a register and RegB is compatible with RegA.
702     Register RegA = MI->getOperand(DstIdx).getReg();
703     SrcRegMap[RegA] = FromRegC;
712 TwoAddressInstructionPass::isProfitableToConv3Addr(unsigned RegA,unsigned RegB){
722   unsigned ToRegA = getMappedReg(RegA, DstRegMap);
731                                               unsigned RegA, unsigned RegB,
765   SrcRegMap.erase(RegA);
1522     Register RegA = DstMO.getReg();
1529     if (RegA == RegB) {
1536     LastCopiedReg = RegA;
1548              MI->getOperand(i).getReg() != RegA);
1553                                       TII->get(TargetOpcode::COPY), RegA);
1559       if (Register::isVirtualRegister(RegA)) {
1560         assert(TRI->getMatchingSuperRegClass(RC, MRI->getRegClass(RegA),
1566         assert(TRI->getMatchingSuperReg(RegA, SubRegB, MRI->getRegClass(RegB))
1580       if (Register::isVirtualRegister(RegA)) {
1581         LiveInterval &LI = LIS->getInterval(RegA);
1600     if (Register::isVirtualRegister(RegA) && Register::isVirtualRegister(RegB))
1601       MRI->constrainRegClass(RegA, RC);
1602     MO.setReg(RegA);
1604     // by SubRegB is compatible with RegA with no subregister. So regardless of
1609     SrcRegMap[RegA] = RegB;