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
18namespace llvm {
19
20/// A MachineSchedStrategy implementation for PowerPC pre RA scheduling.
21class PPCPreRASchedStrategy : public GenericScheduler {
22public:
23 PPCPreRASchedStrategy(const MachineSchedContext *C) :
24 GenericScheduler(C) {}
25protected:
26 bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand,
27 SchedBoundary *Zone) const override;
28
29private:
30 bool biasAddiLoadCandidate(SchedCandidate &Cand,
31 SchedCandidate &TryCand,
32 SchedBoundary &Zone) const;
33};
34
35/// A MachineSchedStrategy implementation for PowerPC post RA scheduling.
36class PPCPostRASchedStrategy : public PostGenericScheduler {
37public:
38 PPCPostRASchedStrategy(const MachineSchedContext *C) :
39 PostGenericScheduler(C) {}
40
41protected:
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