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llvm/include/llvm/CodeGen/MachineLoopUtils.h
| //=- MachineLoopUtils.h - Helper functions for manipulating loops -*- C++ -*-=// | //=- MachineLoopUtils.h - Helper functions for manipulating loops -*- C++ -*-=// | ||||
| // | // | ||||
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||
| // See https://llvm.org/LICENSE.txt for license information. | // See https://llvm.org/LICENSE.txt for license information. | ||||
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||
| // | // | ||||
| //===----------------------------------------------------------------------===// | //===----------------------------------------------------------------------===// | ||||
| #ifndef LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | #ifndef LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | ||||
| #define LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | #define LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | ||||
| namespace llvm { | namespace llvm { | ||||
| class MachineLoop; | |||||
| class MachineBasicBlock; | class MachineBasicBlock; | ||||
| class MachineRegisterInfo; | class MachineRegisterInfo; | ||||
| class TargetInstrInfo; | class TargetInstrInfo; | ||||
| enum LoopPeelDirection { | enum LoopPeelDirection { | ||||
| LPD_Front, ///< Peel the first iteration of the loop. | LPD_Front, ///< Peel the first iteration of the loop. | ||||
| LPD_Back ///< Peel the last iteration of the loop. | LPD_Back ///< Peel the last iteration of the loop. | ||||
| }; | }; | ||||
| Show All 10 Lines | |||||
| /// clone so as to execute a single iteration. | /// clone so as to execute a single iteration. | ||||
| /// | /// | ||||
| /// The trip count of Loop is not updated. | /// The trip count of Loop is not updated. | ||||
| MachineBasicBlock *PeelSingleBlockLoop(LoopPeelDirection Direction, | MachineBasicBlock *PeelSingleBlockLoop(LoopPeelDirection Direction, | ||||
| MachineBasicBlock *Loop, | MachineBasicBlock *Loop, | ||||
| MachineRegisterInfo &MRI, | MachineRegisterInfo &MRI, | ||||
| const TargetInstrInfo *TII); | const TargetInstrInfo *TII); | ||||
| /// Return true if PhysReg is live outside the loop, i.e. determine if it | |||||
| /// is live in the loop exit blocks, and false otherwise. | |||||
| bool isRegLiveInExitBlocks(MachineLoop *Loop, int PhysReg); | |||||
| } // namespace llvm | } // namespace llvm | ||||
| #endif // LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | #endif // LLVM_LIB_CODEGEN_MACHINELOOPUTILS_H | ||||