diff options
Diffstat (limited to 'include/llvm/Target/TargetInstrInfo.h')
| -rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 21675dc..90608f1 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -321,6 +321,12 @@ public: assert(0 && "Target didn't implement TargetInstrInfo::InsertBranch!"); return 0; } + + /// ReplaceTailWithBranchTo - Delete the instruction OldInst and everything + /// after it, replacing it with an unconditional branch to NewDest. This is + /// used by the tail merging pass. + virtual void ReplaceTailWithBranchTo(MachineBasicBlock::iterator Tail, + MachineBasicBlock *NewDest) const = 0; /// copyRegToReg - Emit instructions to copy between a pair of registers. It /// returns false if the target does not how to copy between the specified @@ -562,6 +568,13 @@ public: return true; } + /// isSchedulingBoundary - Test if the given instruction should be + /// considered a scheduling boundary. This primarily includes labels and + /// terminators. + virtual bool isSchedulingBoundary(const MachineInstr *MI, + const MachineBasicBlock *MBB, + const MachineFunction &MF) const = 0; + /// GetInstSize - Returns the size of the specified Instruction. /// virtual unsigned GetInstSizeInBytes(const MachineInstr *MI) const { @@ -595,6 +608,8 @@ protected: TargetInstrInfoImpl(const TargetInstrDesc *desc, unsigned NumOpcodes) : TargetInstrInfo(desc, NumOpcodes) {} public: + virtual void ReplaceTailWithBranchTo(MachineBasicBlock::iterator OldInst, + MachineBasicBlock *NewDest) const; virtual MachineInstr *commuteInstruction(MachineInstr *MI, bool NewMI = false) const; virtual bool findCommutedOpIndices(MachineInstr *MI, unsigned &SrcOpIdx1, @@ -610,6 +625,9 @@ public: MachineFunction &MF) const; virtual bool produceSameValue(const MachineInstr *MI0, const MachineInstr *MI1) const; + virtual bool isSchedulingBoundary(const MachineInstr *MI, + const MachineBasicBlock *MBB, + const MachineFunction &MF) const; virtual unsigned GetFunctionSizeInBytes(const MachineFunction &MF) const; virtual ScheduleHazardRecognizer * |