1 //===- llvm/CodeGen/Spiller.h - Spiller -------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_CODEGEN_SPILLER_H 10 #define LLVM_CODEGEN_SPILLER_H 11 12 namespace llvm { 13 14 class LiveRangeEdit; 15 class MachineFunction; 16 class MachineFunctionPass; 17 class VirtRegMap; 18 class VirtRegAuxInfo; 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, MachineFunction &MF, 39 VirtRegMap &VRM, VirtRegAuxInfo &VRAI); 40 41 } // end namespace llvm 42 43 #endif // LLVM_CODEGEN_SPILLER_H 44