Spiller.h revision f41538d1b54f55e8900394929b50f7ce3e61125f 
1//===-- llvm/CodeGen/Spiller.h - Spiller -*- 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#ifndef LLVM_CODEGEN_SPILLER_H
11#define LLVM_CODEGEN_SPILLER_H
12
13#include <vector>
14
15namespace llvm {
16  class LiveInterval;
17  class LiveIntervals;
18  class LiveStacks;
19  class MachineFunction;
20  class VirtRegMap;
21
22  /// Spiller interface.
23  ///
24  /// Implementations are utility classes which insert spill or remat code on
25  /// demand.
26  class Spiller {
27  public:
28    virtual ~Spiller() = 0;
29    virtual std::vector<LiveInterval*> spill(LiveInterval *li) = 0;
30  };
31
32  /// Create and return a spiller object, as specified on the command line.
33  Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
34                         LiveStacks *ls, VirtRegMap *vrm);
35}
36
37#endif
38