InstructionSelect.h revision 353358 
1//== llvm/CodeGen/GlobalISel/InstructionSelect.h -----------------*- 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/// \file This file describes the interface of the MachineFunctionPass
9/// responsible for selecting (possibly generic) machine instructions to
10/// target-specific instructions.
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
14#define LLVM_CODEGEN_GLOBALISEL_INSTRUCTIONSELECT_H
15
16#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
17#include "llvm/CodeGen/MachineFunctionPass.h"
18
19namespace llvm {
20/// This pass is responsible for selecting generic machine instructions to
21/// target-specific instructions.  It relies on the InstructionSelector provided
22/// by the target.
23/// Selection is done by examining blocks in post-order, and instructions in
24/// reverse order.
25///
26/// \post for all inst in MF: not isPreISelGenericOpcode(inst.opcode)
27class InstructionSelect : public MachineFunctionPass {
28public:
29  static char ID;
30  StringRef getPassName() const override { return "InstructionSelect"; }
31
32  void getAnalysisUsage(AnalysisUsage &AU) const override;
33
34  MachineFunctionProperties getRequiredProperties() const override {
35    return MachineFunctionProperties()
36        .set(MachineFunctionProperties::Property::IsSSA)
37        .set(MachineFunctionProperties::Property::Legalized)
38        .set(MachineFunctionProperties::Property::RegBankSelected);
39  }
40
41  MachineFunctionProperties getSetProperties() const override {
42    return MachineFunctionProperties().set(
43        MachineFunctionProperties::Property::Selected);
44  }
45
46  InstructionSelect();
47
48  bool runOnMachineFunction(MachineFunction &MF) override;
49};
50} // End namespace llvm.
51
52#endif
53