Spiller.h revision 199989
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 "llvm/ADT/SmallVector.h" 14#include <vector> 15 16namespace llvm { 17 18 class LiveInterval; 19 class LiveIntervals; 20 class LiveStacks; 21 class MachineFunction; 22 class MachineInstr; 23 class MachineLoopInfo; 24 class VirtRegMap; 25 class VNInfo; 26 27 /// Spiller interface. 28 /// 29 /// Implementations are utility classes which insert spill or remat code on 30 /// demand. 31 class Spiller { 32 public: 33 virtual ~Spiller() = 0; 34 35 /// Spill the given live range. The method used will depend on the Spiller 36 /// implementation selected. 37 virtual std::vector<LiveInterval*> spill(LiveInterval *li, 38 SmallVectorImpl<LiveInterval*> &spillIs) = 0; 39 40 }; 41 42 /// Create and return a spiller object, as specified on the command line. 43 Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li, 44 const MachineLoopInfo *loopInfo, VirtRegMap *vrm); 45} 46 47#endif 48