- /// EmitLiveInCopy - Emit a copy for a live in physical register. If the
- /// physical register has only a single copy use, then coalesced the copy
- /// if possible.
- void EmitLiveInCopy(MachineBasicBlock *MBB,
- MachineBasicBlock::iterator &InsertPos,
- unsigned VirtReg, unsigned PhysReg,
- const TargetRegisterClass *RC,
- DenseMap<MachineInstr*, unsigned> &CopyRegMap);
-
- /// EmitLiveInCopies - If this is the first basic block in the function,
- /// and if it has live ins that need to be copied into vregs, emit the
- /// copies into the top of the block.
- void EmitLiveInCopies(MachineBasicBlock *MBB);
+ // Return the TargetInstrDesc of this SDNode or NULL.
+ const TargetInstrDesc *getNodeDesc(const SDNode *Node) const;