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_LIB_CODEGEN_SPILLER_H 11 #define LLVM_LIB_CODEGEN_SPILLER_H 12 13 namespace llvm { 14 15 class LiveRangeEdit; 16 class MachineFunction; 17 class MachineFunctionPass; 18 class VirtRegMap; 19 20 /// Spiller interface. 21 /// 22 /// Implementations are utility classes which insert spill or remat code on 23 /// demand. 24 class Spiller { 25 virtual void anchor(); 26 27 public: 28 virtual ~Spiller() = 0; 29 30 /// spill - Spill the LRE.getParent() live interval. 31 virtual void spill(LiveRangeEdit &LRE) = 0; 32 33 virtual void postOptimization() {} 34 }; 35 36 /// Create and return a spiller that will insert spill code directly instead 37 /// of deferring though VirtRegMap. 38 Spiller *createInlineSpiller(MachineFunctionPass &pass, 39 MachineFunction &mf, 40 VirtRegMap &vrm); 41 42 } // end namespace llvm 43 44 #endif // LLVM_LIB_CODEGEN_SPILLER_H 45
