IsDefCopy = true;
return false;
}
- if (!DefMI->isAsCheapAsAMove())
+ if (!TII->isAsCheapAsAMove(DefMI))
return false;
if (!TII->isTriviallyReMaterializable(DefMI, AA))
return false;
return false;
}
+ if (CP.getNewRC()) {
+ auto SrcRC = MRI->getRegClass(CP.getSrcReg());
+ auto DstRC = MRI->getRegClass(CP.getDstReg());
+ unsigned SrcIdx = CP.getSrcIdx();
+ unsigned DstIdx = CP.getDstIdx();
+ if (CP.isFlipped()) {
+ std::swap(SrcIdx, DstIdx);
+ std::swap(SrcRC, DstRC);
+ }
+ if (!TRI->shouldCoalesce(CopyMI, SrcRC, SrcIdx, DstRC, DstIdx,
+ CP.getNewRC())) {
+ DEBUG(dbgs() << "\tSubtarget bailed on coalescing.\n");
+ return false;
+ }
+ }
+
// Dead code elimination. This really should be handled by MachineDCE, but
// sometimes dead copies slip through, and we can't generate invalid live
// ranges.
MF = &fn;
MRI = &fn.getRegInfo();
TM = &fn.getTarget();
- TRI = TM->getRegisterInfo();
- TII = TM->getInstrInfo();
+ TRI = TM->getSubtargetImpl()->getRegisterInfo();
+ TII = TM->getSubtargetImpl()->getInstrInfo();
LIS = &getAnalysis<LiveIntervals>();
AA = &getAnalysis<AliasAnalysis>();
Loops = &getAnalysis<MachineLoopInfo>();