lib/Target/PowerPC/PPCMachineScheduler.h

   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   void tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand,
  27                     SchedBoundary *Zone) const override;
  28 private:
  29   bool biasAddiLoadCandidate(SchedCandidate &Cand,
  30                              SchedCandidate &TryCand,
  31                              SchedBoundary &Zone) const;
  32 };
  33
  34 /// A MachineSchedStrategy implementation for PowerPC post RA scheduling.
  35 class PPCPostRASchedStrategy : public PostGenericScheduler {
  36 public:
  37   PPCPostRASchedStrategy(const MachineSchedContext *C) :
  38     PostGenericScheduler(C) {}
  39
  40 protected:
  41   void initialize(ScheduleDAGMI *Dag) override;
  42   SUnit *pickNode(bool &IsTopNode) override;
  43   void enterMBB(MachineBasicBlock *MBB) override;
  44   void leaveMBB() override;
  45 };
  46
  47 } // end namespace llvm
  48
  49 #endif // LLVM_LIB_TARGET_POWERPC_POWERPCMACHINESCHEDULER_H