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 | |