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
17 class LiveInterval;
18 class LiveIntervals;
19 class LiveStacks;
20 class MachineFunction;
21 class MachineInstr;
22 class VirtRegMap;
23 class VNInfo;
24
25 /// Spiller interface.
26 ///
27 /// Implementations are utility classes which insert spill or remat code on
28 /// demand.
29 class Spiller {
30 public:
31 virtual ~Spiller() = 0;
32
33 /// Spill the given live range. The method used will depend on the Spiller
34 /// implementation selected.
35 virtual std::vector<LiveInterval*> spill(LiveInterval *li) = 0;
36
37 /// Intra-block split.
38 virtual std::vector<LiveInterval*> intraBlockSplit(LiveInterval *li,
39 VNInfo *valno) = 0;
40
41 };
42
43 /// Create and return a spiller object, as specified on the command line.
44 Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
45 LiveStacks *ls, VirtRegMap *vrm);
46}
47
48#endif