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//===-- llvm/CodeGen/Spiller.h - Spiller -*- C++ -*------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_SPILLER_H
#define LLVM_CODEGEN_SPILLER_H
#include <vector>
namespace llvm {
struct LiveInterval;
class LiveIntervals;
class LiveStacks;
class MachineFunction;
class MachineInstr;
class VirtRegMap;
class VNInfo;
/// Spiller interface.
///
/// Implementations are utility classes which insert spill or remat code on
/// demand.
class Spiller {
public:
virtual ~Spiller() = 0;
/// Spill the given live range. The method used will depend on the Spiller
/// implementation selected.
virtual std::vector<LiveInterval*> spill(LiveInterval *li) = 0;
/// Intra-block split.
virtual std::vector<LiveInterval*> intraBlockSplit(LiveInterval *li,
VNInfo *valno) = 0;
};
/// Create and return a spiller object, as specified on the command line.
Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
LiveStacks *ls, VirtRegMap *vrm);
}
#endif
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