• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
postOptimization()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