blob: 99e40cbeb5fe6ec19b09852fc670bdb707acadef (
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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
//===-- llvm/Analysis/SlotCalculator.h - Calculate value slots ---*- C++ -*-==//
//
// This ModuleAnalyzer subclass calculates the slots that values will land in.
// This is useful for when writing bytecode or assembly out, because you have
// to know these things.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_SLOTCALCULATOR_H
#define LLVM_ANALYSIS_SLOTCALCULATOR_H
#include "llvm/Analysis/ModuleAnalyzer.h"
#include "llvm/SymTabValue.h"
#include <vector>
#include <map>
class SlotCalculator : public ModuleAnalyzer {
const Module *TheModule;
bool IgnoreNamedNodes; // Shall we not count named nodes?
typedef vector<const Value*> TypePlane;
vector <TypePlane> Table;
map<const Value *, unsigned> NodeMap;
// ModuleLevel - Used to keep track of which values belong to the module,
// and which values belong to the currently incorporated method.
//
vector <unsigned> ModuleLevel;
public:
SlotCalculator(const Module *M, bool IgnoreNamed);
SlotCalculator(const Method *M, bool IgnoreNamed);// Start out in incorp state
inline ~SlotCalculator() {}
// getValSlot returns < 0 on error!
int getValSlot(const Value *D) const;
inline unsigned getNumPlanes() const { return Table.size(); }
inline unsigned getModuleLevel(unsigned Plane) const {
return Plane < ModuleLevel.size() ? ModuleLevel[Plane] : 0;
}
inline const TypePlane &getPlane(unsigned Plane) const {
return Table[Plane];
}
// If you'd like to deal with a method, use these two methods to get its data
// into the SlotCalculator!
//
void incorporateMethod(const Method *M);
void purgeMethod();
protected:
// insertVal - Insert a value into the value table...
//
void insertVal(const Value *D);
// visitMethod - This member is called after the constant pool has been
// processed. The default implementation of this is a noop.
//
virtual bool visitMethod(const Method *M);
// processConstant is called once per each constant in the constant pool. It
// traverses the constant pool such that it visits each constant in the
// order of its type. Thus, all 'int' typed constants shall be visited
// sequentially, etc...
//
virtual bool processConstant(const ConstPoolVal *CPV);
// processType - This callback occurs when an derived type is discovered
// at the class level. This activity occurs when processing a constant pool.
//
virtual bool processType(const Type *Ty);
// processMethods - The default implementation of this method loops through
// all of the methods in the module and processModule's them. We don't want
// this (we want to explicitly visit them with incorporateMethod), so we
// disable it.
//
virtual bool processMethods(const Module *M) { return false; }
// processMethodArgument - This member is called for every argument that
// is passed into the method.
//
virtual bool processMethodArgument(const MethodArgument *MA);
// processBasicBlock - This member is called for each basic block in a methd.
//
virtual bool processBasicBlock(const BasicBlock *BB);
// processInstruction - This member is called for each Instruction in a methd.
//
virtual bool processInstruction(const Instruction *I);
};
#endif
|
