LLVM 20.0.0git
PPCMachineScheduler.h
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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
17
18namespace llvm {
19
20/// A MachineSchedStrategy implementation for PowerPC pre RA scheduling.
22public:
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.
37public:
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
MachineBasicBlock & MBB
GenericScheduler shrinks the unscheduled zone using heuristics to balance the schedule.
A MachineSchedStrategy implementation for PowerPC post RA scheduling.
SUnit * pickNode(bool &IsTopNode) override
Pick the next node to schedule.
PPCPostRASchedStrategy(const MachineSchedContext *C)
void enterMBB(MachineBasicBlock *MBB) override
Tell the strategy that MBB is about to be processed.
bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand) override
Apply a set of heuristics to a new candidate for PostRA scheduling.
bool biasAddiCandidate(SchedCandidate &Cand, SchedCandidate &TryCand) const
void leaveMBB() override
Tell the strategy that current MBB is done.
void initialize(ScheduleDAGMI *Dag) override
Initialize the strategy after building the DAG for a new region.
A MachineSchedStrategy implementation for PowerPC pre RA scheduling.
bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand, SchedBoundary *Zone) const override
Apply a set of heuristics to a new candidate.
PPCPreRASchedStrategy(const MachineSchedContext *C)
PostGenericScheduler - Interface to the scheduling algorithm used by ScheduleDAGMI.
Scheduling unit. This is a node in the scheduling DAG.
Definition: ScheduleDAG.h:242
Each Scheduling boundary is associated with ready queues.
ScheduleDAGMI is an implementation of ScheduleDAGInstrs that simply schedules machine instructions ac...
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
MachineSchedContext provides enough context from the MachineScheduler pass for the target to instanti...