bool getExtractSubregLikeInputs(const MachineInstr &MI, unsigned DefIdx,
RegSubRegPairAndIdx &InputReg) const override;
+ /// Build the equivalent inputs of a INSERT_SUBREG for the given \p MI
+ /// and \p DefIdx.
+ /// \p [out] BaseReg and \p [out] InsertedReg contain
+ /// the equivalent inputs of INSERT_SUBREG.
+ /// E.g., INSERT_SUBREG vreg0:sub0, vreg1:sub1, sub3 would produce:
+ /// - BaseReg: vreg0:sub0
+ /// - InsertedReg: vreg1:sub1, sub3
+ ///
+ /// \returns true if it is possible to build such an input sequence
+ /// with the pair \p MI, \p DefIdx. False otherwise.
+ ///
+ /// \pre MI.isInsertSubregLike().
+ bool
+ getInsertSubregLikeInputs(const MachineInstr &MI, unsigned DefIdx,
+ RegSubRegPair &BaseReg,
+ RegSubRegPairAndIdx &InsertedReg) const override;
+
private:
void expandLoadStackGuard(MachineBasicBlock::iterator MI,
Reloc::Model RM) const override;