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-rw-r--r--include/llvm/Target/TargetInstrInfo.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index 1bcd6fd836..f7798018b5 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -232,6 +232,12 @@ public:
const MachineInstr *Orig,
const TargetRegisterInfo *TRI) const = 0;
+ /// duplicate - Create a duplicate of the Orig instruction in MF. This is like
+ /// MachineFunction::CloneMachineInstr(), but the target may update operands
+ /// that are required to be unique.
+ virtual MachineInstr *duplicate(MachineInstr *Orig,
+ MachineFunction &MF) const = 0;
+
/// convertToThreeAddress - This method must be implemented by targets that
/// set the M_CONVERTIBLE_TO_3_ADDR flag. When this flag is set, the target
/// may be able to convert a two-address instruction into one or more true
@@ -560,6 +566,8 @@ public:
unsigned DestReg, unsigned SubReg,
const MachineInstr *Orig,
const TargetRegisterInfo *TRI) const;
+ virtual MachineInstr *duplicate(MachineInstr *Orig,
+ MachineFunction &MF) const;
virtual bool isIdentical(const MachineInstr *MI,
const MachineInstr *Other,
const MachineRegisterInfo *MRI) const;