Spiller.h revision cfb8a1bea15f50e6609283c0e06f815a1448a14b
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 49