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_LIB_CODEGEN_SPILLER_H 10 #define LLVM_LIB_CODEGEN_SPILLER_H 11 12 namespace llvm { 13 14 class LiveRangeEdit; 15 class MachineFunction; 16 class MachineFunctionPass; 17 class VirtRegMap; 18 19 /// Spiller interface. 20 /// 21 /// Implementations are utility classes which insert spill or remat code on 22 /// demand. 23 class Spiller { 24 virtual void anchor(); 25 26 public: 27 virtual ~Spiller() = 0; 28 29 /// spill - Spill the LRE.getParent() live interval. 30 virtual void spill(LiveRangeEdit &LRE) = 0; 31 32 virtual void postOptimization() {} 33 }; 34 35 /// Create and return a spiller that will insert spill code directly instead 36 /// of deferring though VirtRegMap. 37 Spiller *createInlineSpiller(MachineFunctionPass &pass, MachineFunction &mf, 38 VirtRegMap &vrm); 39 40 } // end namespace llvm 41 42 #endif // LLVM_LIB_CODEGEN_SPILLER_H 43