1//===- DAGISelEmitter.h - Generate an instruction selector ------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This tablegen backend emits a DAG instruction selector.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef DAGISEL_EMITTER_H
15#define DAGISEL_EMITTER_H
16
17#include "llvm/TableGen/TableGenBackend.h"
18#include "CodeGenDAGPatterns.h"
19
20namespace llvm {
21
22/// DAGISelEmitter - The top-level class which coordinates construction
23/// and emission of the instruction selector.
24///
25class DAGISelEmitter : public TableGenBackend {
26  RecordKeeper &Records;
27  CodeGenDAGPatterns CGP;
28public:
29  explicit DAGISelEmitter(RecordKeeper &R) : Records(R), CGP(R) {}
30
31  // run - Output the isel, returning true on failure.
32  void run(raw_ostream &OS);
33};
34
35} // End llvm namespace
36
37#endif
38