int VarArgsFrameIndex; // FrameIndex for start of varargs area.
//int ReturnAddrIndex; // FrameIndex for return slot.
unsigned GP, SP, RP; // FIXME - clean this mess up
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public:
explicit IA64TargetLowering(TargetMachine &TM);
unsigned VirtGPR; // this is public so it can be accessed in the selector
// for ISD::RET. add an accessor instead? FIXME
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const char *getTargetNodeName(unsigned Opcode) const;
/// LowerArguments - This hook must be implemented to indicate how we should