1 //===- PPCMachineScheduler.h - Custom PowerPC MI scheduler --*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Custom PowerPC MI scheduler. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_POWERPC_POWERPCMACHINESCHEDULER_H 14 #define LLVM_LIB_TARGET_POWERPC_POWERPCMACHINESCHEDULER_H 15 16 #include "llvm/CodeGen/MachineScheduler.h" 17 18 namespace llvm { 19 20 /// A MachineSchedStrategy implementation for PowerPC pre RA scheduling. 21 class PPCPreRASchedStrategy : public GenericScheduler { 22 public: 23 PPCPreRASchedStrategy(const MachineSchedContext *C) : 24 GenericScheduler(C) {} 25 protected: 26 bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand, 27 SchedBoundary *Zone) const override; 28 29 private: 30 bool biasAddiLoadCandidate(SchedCandidate &Cand, 31 SchedCandidate &TryCand, 32 SchedBoundary &Zone) const; 33 }; 34 35 /// A MachineSchedStrategy implementation for PowerPC post RA scheduling. 36 class PPCPostRASchedStrategy : public PostGenericScheduler { 37 public: 38 PPCPostRASchedStrategy(const MachineSchedContext *C) : 39 PostGenericScheduler(C) {} 40 41 protected: 42 void initialize(ScheduleDAGMI *Dag) override; 43 SUnit *pickNode(bool &IsTopNode) override; 44 void enterMBB(MachineBasicBlock *MBB) override; 45 void leaveMBB() override; 46 47 bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand) override; 48 bool biasAddiCandidate(SchedCandidate &Cand, SchedCandidate &TryCand) const; 49 }; 50 51 } // end namespace llvm 52 53 #endif // LLVM_LIB_TARGET_POWERPC_POWERPCMACHINESCHEDULER_H 54