utils/TableGen/DAGISelEmitter.h

   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 "TableGenBackend.h"
  18 #include "CodeGenDAGPatterns.h"
  19
  20 namespace llvm {
  21
  22 /// DAGISelEmitter - The top-level class which coordinates construction
  23 /// and emission of the instruction selector.
  24 ///
  25 class DAGISelEmitter : public TableGenBackend {
  26   RecordKeeper &Records;
  27   CodeGenDAGPatterns CGP;
  28 public:
  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