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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines several printers for various different types of graphs used
// by the LLVM infrastructure. It uses the generic graph interface to convert
// the graph into a .dot graph. These graphs can then be processed with the
// "dot" tool to convert them to postscript or some other suitable format.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/ToolOutputFile.h"
using namespace llvm;
template<typename GraphType>
static void WriteGraphToFile(raw_ostream &O, const std::string &GraphName,
const GraphType >) {
std::string Filename = GraphName + ".dot";
O << "Writing '" << Filename << "'...";
std::string ErrInfo;
tool_output_file F(Filename.c_str(), ErrInfo);
if (ErrInfo.empty()) {
WriteGraph(F.os(), GT);
F.os().close();
if (!F.os().has_error()) {
O << "\n";
F.keep();
return;
}
}
O << " error opening file for writing!\n";
F.os().clear_error();
}
//===----------------------------------------------------------------------===//
// Call Graph Printer
//===----------------------------------------------------------------------===//
namespace llvm {
template<>
struct DOTGraphTraits<CallGraph*> : public DefaultDOTGraphTraits {
DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
static std::string getGraphName(CallGraph *F) {
return "Call Graph";
}
static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
if (Node->getFunction())
return ((Value*)Node->getFunction())->getName();
return "external node";
}
};
}
namespace {
struct CallGraphPrinter : public ModulePass {
static char ID; // Pass ID, replacement for typeid
CallGraphPrinter() : ModulePass(ID) {}
virtual bool runOnModule(Module &M) {
WriteGraphToFile(llvm::errs(), "callgraph", &getAnalysis<CallGraph>());
return false;
}
void print(raw_ostream &OS, const llvm::Module*) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<CallGraph>();
AU.setPreservesAll();
}
};
}
char CallGraphPrinter::ID = 0;
static RegisterPass<CallGraphPrinter> P2("dot-callgraph",
"Print Call Graph to 'dot' file");
//===----------------------------------------------------------------------===//
// DomInfoPrinter Pass
//===----------------------------------------------------------------------===//
namespace {
class DomInfoPrinter : public FunctionPass {
public:
static char ID; // Pass identification, replacement for typeid
DomInfoPrinter() : FunctionPass(ID) {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<DominatorTree>();
}
virtual bool runOnFunction(Function &F) {
getAnalysis<DominatorTree>().dump();
return false;
}
};
}
char DomInfoPrinter::ID = 0;
static RegisterPass<DomInfoPrinter>
DIP("print-dom-info", "Dominator Info Printer", true, true);
|
