1 //===- LiveDebugValues.cpp - Tracking Debug Value MIs ---------*- 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_LIVEDEBUGVALUES_LIVEDEBUGVALUES_H
10 #define LLVM_LIB_CODEGEN_LIVEDEBUGVALUES_LIVEDEBUGVALUES_H
11 
12 namespace llvm {
13 class MachineDominatorTree;
14 class MachineFunction;
15 class TargetPassConfig;
16 class Triple;
17 
18 // Inline namespace for types / symbols shared between different
19 // LiveDebugValues implementations.
20 inline namespace SharedLiveDebugValues {
21 
22 // Expose a base class for LiveDebugValues interfaces to inherit from. This
23 // allows the generic LiveDebugValues pass handles to call into the
24 // implementation.
25 class LDVImpl {
26 public:
27   virtual bool ExtendRanges(MachineFunction &MF, MachineDominatorTree *DomTree,
28                             TargetPassConfig *TPC, unsigned InputBBLimit,
29                             unsigned InputDbgValLimit) = 0;
30   virtual ~LDVImpl() = default;
31 };
32 
33 } // namespace SharedLiveDebugValues
34 
35 // Factory functions for LiveDebugValues implementations.
36 extern LDVImpl *makeVarLocBasedLiveDebugValues();
37 extern LDVImpl *makeInstrRefBasedLiveDebugValues();
38 
39 extern bool debuginfoShouldUseDebugInstrRef(const Triple &T);
40 
41 } // namespace llvm
42 
43 #endif // LLVM_LIB_CODEGEN_LIVEDEBUGVALUES_LIVEDEBUGVALUES_H
44