blob: 473784bc58412ea50ba82d0bb8a5b2a8dbf1c7c7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
//===- MacroFusion.h - Macro Fusion ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
/// \file This file contains the definition of the DAG scheduling mutation to
/// pair instructions back to back.
//
//===----------------------------------------------------------------------===//
#include <functional>
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/CodeGen/MachineScheduler.h"
namespace llvm {
/// \brief 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.
typedef std::function<bool(const TargetInstrInfo &TII,
const TargetSubtargetInfo &TSI,
const MachineInstr *FirstMI,
const MachineInstr &SecondMI)> ShouldSchedulePredTy;
/// \brief 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);
/// \brief 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
|
