blob: eba4fbede2777bd2965c61d8856ece56dff58615 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
//===- LiveDebugVariables.h - Tracking debug info variables ----*- c++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides the interface to the LiveDebugVariables analysis.
//
// The analysis removes DBG_VALUE instructions for virtual registers and tracks
// live user variables in a data structure that can be updated during register
// allocation.
//
// After register allocation new DBG_VALUE instructions are emitted to reflect
// the new locations of user variables.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
#define LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
#include "llvm/CodeGen/MachineFunctionPass.h"
namespace llvm {
class LiveDebugVariables : public MachineFunctionPass {
void *pImpl;
public:
static char ID; // Pass identification, replacement for typeid
LiveDebugVariables();
/// renameRegister - Move any user variables in OldReg to NewReg:SubIdx.
/// @param OldReg Old virtual register that is going away.
/// @param NewReg New register holding the user variables.
/// @param SubIdx If NewReg is a virtual register, SubIdx may indicate a sub-
/// register.
void renameRegister(unsigned OldReg, unsigned NewReg, unsigned SubIdx);
/// emitDebugValues - Emit new DBG_VALUE instructions reflecting the changes
/// that happened during register allocation.
void emitDebugValues();
private:
/// runOnMachineFunction - Analyze and remove DBG_VALUE instructions.
virtual bool runOnMachineFunction(MachineFunction &);
virtual void getAnalysisUsage(AnalysisUsage &) const;
};
} // namespace llvm
#endif // LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
|
