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//===- llvm/CodeGen/SchedulerRegistry.h -------------------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation for instruction scheduler function
// pass registry (RegisterScheduler).
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_SCHEDULERREGISTRY_H
#define LLVM_CODEGEN_SCHEDULERREGISTRY_H
#include "llvm/CodeGen/MachinePassRegistry.h"
#include "llvm/Support/CodeGen.h"
namespace llvm {
//===----------------------------------------------------------------------===//
///
/// RegisterScheduler class - Track the registration of instruction schedulers.
///
//===----------------------------------------------------------------------===//
class ScheduleDAGSDNodes;
class SelectionDAGISel;
class RegisterScheduler
: public MachinePassRegistryNode<ScheduleDAGSDNodes *(*)(SelectionDAGISel *,
CodeGenOptLevel)> {
public:
using FunctionPassCtor = ScheduleDAGSDNodes *(*)(SelectionDAGISel *,
CodeGenOptLevel);
static MachinePassRegistry<FunctionPassCtor> Registry;
RegisterScheduler(const char *N, const char *D, FunctionPassCtor C)
: MachinePassRegistryNode(N, D, C) {
Registry.Add(this);
}
~RegisterScheduler() { Registry.Remove(this); }
// Accessors.
RegisterScheduler *getNext() const {
return (RegisterScheduler *)MachinePassRegistryNode::getNext();
}
static RegisterScheduler *getList() {
return (RegisterScheduler *)Registry.getList();
}
static void setListener(MachinePassRegistryListener<FunctionPassCtor> *L) {
Registry.setListener(L);
}
};
/// createBURRListDAGScheduler - This creates a bottom up register usage
/// reduction list scheduler.
ScheduleDAGSDNodes *createBURRListDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
/// createSourceListDAGScheduler - This creates a bottom up list scheduler that
/// schedules nodes in source code order when possible.
ScheduleDAGSDNodes *createSourceListDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
/// createHybridListDAGScheduler - This creates a bottom up register pressure
/// aware list scheduler that make use of latency information to avoid stalls
/// for long latency instructions in low register pressure mode. In high
/// register pressure mode it schedules to reduce register pressure.
ScheduleDAGSDNodes *createHybridListDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel);
/// createILPListDAGScheduler - This creates a bottom up register pressure
/// aware list scheduler that tries to increase instruction level parallelism
/// in low register pressure mode. In high register pressure mode it schedules
/// to reduce register pressure.
ScheduleDAGSDNodes *createILPListDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel);
/// createFastDAGScheduler - This creates a "fast" scheduler.
///
ScheduleDAGSDNodes *createFastDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
/// createVLIWDAGScheduler - Scheduler for VLIW targets. This creates top down
/// DFA driven list scheduler with clustering heuristic to control
/// register pressure.
ScheduleDAGSDNodes *createVLIWDAGScheduler(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
/// createDefaultScheduler - This creates an instruction scheduler appropriate
/// for the target.
ScheduleDAGSDNodes *createDefaultScheduler(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
/// createDAGLinearizer - This creates a "no-scheduling" scheduler which
/// linearize the DAG using topological order.
ScheduleDAGSDNodes *createDAGLinearizer(SelectionDAGISel *IS,
CodeGenOptLevel OptLevel);
} // end namespace llvm
#endif // LLVM_CODEGEN_SCHEDULERREGISTRY_H
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