+ /// CanJoinExtractSubRegToPhysReg - Return true if it's possible to coalesce
+ /// an extract_subreg where dst is a physical register, e.g.
+ /// cl = EXTRACT_SUBREG reg1024, 1
+ bool CanJoinExtractSubRegToPhysReg(unsigned DstReg, unsigned SrcReg,
+ unsigned SubIdx, unsigned &RealDstReg);
+
+ /// CanJoinInsertSubRegToPhysReg - Return true if it's possible to coalesce
+ /// an insert_subreg where src is a physical register, e.g.
+ /// reg1024 = INSERT_SUBREG reg1024, c1, 0
+ bool CanJoinInsertSubRegToPhysReg(unsigned DstReg, unsigned SrcReg,
+ unsigned SubIdx, unsigned &RealDstReg);
+