forked from OSchip/llvm-project
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
//===-- 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
|
|
|
|
namespace llvm {
|
|
|
|
class LiveInterval;
|
|
class MachineFunction;
|
|
class MachineFunctionPass;
|
|
class SlotIndex;
|
|
template <typename T> class SmallVectorImpl;
|
|
class VirtRegMap;
|
|
|
|
/// Spiller interface.
|
|
///
|
|
/// Implementations are utility classes which insert spill or remat code on
|
|
/// demand.
|
|
class Spiller {
|
|
public:
|
|
virtual ~Spiller() = 0;
|
|
|
|
/// spill - Spill the given live interval. The method used will depend on
|
|
/// the Spiller implementation selected.
|
|
///
|
|
/// @param li The live interval to be spilled.
|
|
/// @param spillIs A list of intervals that are about to be spilled,
|
|
/// and so cannot be used for remat etc.
|
|
/// @param newIntervals The newly created intervals will be appended here.
|
|
virtual void spill(LiveInterval *li,
|
|
SmallVectorImpl<LiveInterval*> &newIntervals,
|
|
SmallVectorImpl<LiveInterval*> &spillIs) = 0;
|
|
|
|
};
|
|
|
|
/// Create and return a spiller object, as specified on the command line.
|
|
Spiller* createSpiller(MachineFunctionPass &pass,
|
|
MachineFunction &mf,
|
|
VirtRegMap &vrm);
|
|
}
|
|
|
|
#endif
|