mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 04:32:44 +01:00
ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
//===- MacroFusion.h - Macro Fusion -----------------------------*- 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 This file contains the definition of the DAG scheduling mutation to
|
|
/// pair instructions back to back.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CODEGEN_MACROFUSION_H
|
|
#define LLVM_CODEGEN_MACROFUSION_H
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
|
|
namespace llvm {
|
|
|
|
class MachineInstr;
|
|
class ScheduleDAGMutation;
|
|
class TargetInstrInfo;
|
|
class TargetSubtargetInfo;
|
|
|
|
/// Check if the instr pair, FirstMI and SecondMI, should be fused
|
|
/// together. Given SecondMI, when FirstMI is unspecified, then check if
|
|
/// SecondMI may be part of a fused pair at all.
|
|
using ShouldSchedulePredTy = std::function<bool(const TargetInstrInfo &TII,
|
|
const TargetSubtargetInfo &TSI,
|
|
const MachineInstr *FirstMI,
|
|
const MachineInstr &SecondMI)>;
|
|
|
|
/// Create a DAG scheduling mutation to pair instructions back to back
|
|
/// for instructions that benefit according to the target-specific
|
|
/// shouldScheduleAdjacent predicate function.
|
|
std::unique_ptr<ScheduleDAGMutation>
|
|
createMacroFusionDAGMutation(ShouldSchedulePredTy shouldScheduleAdjacent);
|
|
|
|
/// Create a DAG scheduling mutation to pair branch instructions with one
|
|
/// of their predecessors back to back for instructions that benefit according
|
|
/// to the target-specific shouldScheduleAdjacent predicate function.
|
|
std::unique_ptr<ScheduleDAGMutation>
|
|
createBranchMacroFusionDAGMutation(ShouldSchedulePredTy shouldScheduleAdjacent);
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_CODEGEN_MACROFUSION_H
|