3e4efe3ed4
This patch adds the initial coexec scheduler scaffold for machine learning workloads on gfx1250. It introduces function and module-level controls for selecting the AMDGPU preRA and postRA schedulers, including an `amdgpu-workload-type` module flag that maps ML workloads to coexec preRA scheduling and a nop postRA scheduler by default. It also updates the coexec scheduler to use a simplified top-down candidate selection path that considers both available and pending queues through a single flow, setting up follow-on heuristic work.
47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
//===- AMDGPUCoExecSchedStrategy.h - CoExec Scheduling Strategy -*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
/// \file
|
|
/// Coexecution-focused scheduling strategy for AMDGPU.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCOEXECSCHEDSTRATEGY_H
|
|
#define LLVM_LIB_TARGET_AMDGPU_AMDGPUCOEXECSCHEDSTRATEGY_H
|
|
|
|
#include "GCNSchedStrategy.h"
|
|
#include "llvm/CodeGen/MachineScheduler.h"
|
|
|
|
namespace llvm {
|
|
|
|
class AMDGPUCoExecSchedStrategy final : public GCNSchedStrategy {
|
|
protected:
|
|
bool tryCandidate(SchedCandidate &Cand, SchedCandidate &TryCand,
|
|
SchedBoundary *Zone) const override;
|
|
void pickNodeFromQueue(SchedBoundary &Zone, const CandPolicy &ZonePolicy,
|
|
const RegPressureTracker &RPTracker,
|
|
SchedCandidate &Cand, bool &PickedPending,
|
|
bool IsBottomUp);
|
|
|
|
public:
|
|
AMDGPUCoExecSchedStrategy(const MachineSchedContext *C);
|
|
|
|
void initPolicy(MachineBasicBlock::iterator Begin,
|
|
MachineBasicBlock::iterator End,
|
|
unsigned NumRegionInstrs) override;
|
|
void initialize(ScheduleDAGMI *DAG) override;
|
|
SUnit *pickNode(bool &IsTopNode) override;
|
|
};
|
|
|
|
ScheduleDAGInstrs *createGCNCoExecMachineScheduler(MachineSchedContext *C);
|
|
ScheduleDAGInstrs *createGCNNoopPostMachineScheduler(MachineSchedContext *C);
|
|
|
|
} // End namespace llvm
|
|
|
|
#endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUCOEXECSCHEDSTRATEGY_H
|