/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/Analysis/CallPrinter.cpp
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1 | | //===- CallPrinter.cpp - DOT printer for call graph -----------------------===// |
2 | | // |
3 | | // The LLVM Compiler Infrastructure |
4 | | // |
5 | | // This file is distributed under the University of Illinois Open Source |
6 | | // License. See LICENSE.TXT for details. |
7 | | // |
8 | | //===----------------------------------------------------------------------===// |
9 | | // |
10 | | // This file defines '-dot-callgraph', which emit a callgraph.<fnname>.dot |
11 | | // containing the call graph of a module. |
12 | | // |
13 | | // There is also a pass available to directly call dotty ('-view-callgraph'). |
14 | | // |
15 | | //===----------------------------------------------------------------------===// |
16 | | |
17 | | #include "llvm/Analysis/CallPrinter.h" |
18 | | #include "llvm/Analysis/CallGraph.h" |
19 | | #include "llvm/Analysis/DOTGraphTraitsPass.h" |
20 | | |
21 | | using namespace llvm; |
22 | | |
23 | | namespace llvm { |
24 | | |
25 | | template <> struct DOTGraphTraits<CallGraph *> : public DefaultDOTGraphTraits { |
26 | 0 | DOTGraphTraits(bool isSimple = false) : DefaultDOTGraphTraits(isSimple) {} |
27 | | |
28 | 0 | static std::string getGraphName(CallGraph *Graph) { return "Call graph"; } |
29 | | |
30 | 0 | std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) { |
31 | 0 | if (Function *Func = Node->getFunction()) |
32 | 0 | return Func->getName(); |
33 | 0 |
|
34 | 0 | return "external node"; |
35 | 0 | } |
36 | | }; |
37 | | |
38 | | struct AnalysisCallGraphWrapperPassTraits { |
39 | 0 | static CallGraph *getGraph(CallGraphWrapperPass *P) { |
40 | 0 | return &P->getCallGraph(); |
41 | 0 | } |
42 | | }; |
43 | | |
44 | | } // end llvm namespace |
45 | | |
46 | | namespace { |
47 | | |
48 | | struct CallGraphViewer |
49 | | : public DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *, |
50 | | AnalysisCallGraphWrapperPassTraits> { |
51 | | static char ID; |
52 | | |
53 | | CallGraphViewer() |
54 | | : DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *, |
55 | | AnalysisCallGraphWrapperPassTraits>( |
56 | 0 | "callgraph", ID) { |
57 | 0 | initializeCallGraphViewerPass(*PassRegistry::getPassRegistry()); |
58 | 0 | } |
59 | | }; |
60 | | |
61 | | struct CallGraphDOTPrinter : public DOTGraphTraitsModulePrinter< |
62 | | CallGraphWrapperPass, true, CallGraph *, |
63 | | AnalysisCallGraphWrapperPassTraits> { |
64 | | static char ID; |
65 | | |
66 | | CallGraphDOTPrinter() |
67 | | : DOTGraphTraitsModulePrinter<CallGraphWrapperPass, true, CallGraph *, |
68 | | AnalysisCallGraphWrapperPassTraits>( |
69 | 0 | "callgraph", ID) { |
70 | 0 | initializeCallGraphDOTPrinterPass(*PassRegistry::getPassRegistry()); |
71 | 0 | } |
72 | | }; |
73 | | |
74 | | } // end anonymous namespace |
75 | | |
76 | | char CallGraphViewer::ID = 0; |
77 | | INITIALIZE_PASS(CallGraphViewer, "view-callgraph", "View call graph", false, |
78 | | false) |
79 | | |
80 | | char CallGraphDOTPrinter::ID = 0; |
81 | | INITIALIZE_PASS(CallGraphDOTPrinter, "dot-callgraph", |
82 | | "Print call graph to 'dot' file", false, false) |
83 | | |
84 | | // Create methods available outside of this file, to use them |
85 | | // "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by |
86 | | // the link time optimization. |
87 | | |
88 | 0 | ModulePass *llvm::createCallGraphViewerPass() { return new CallGraphViewer(); } |
89 | | |
90 | 0 | ModulePass *llvm::createCallGraphDOTPrinterPass() { |
91 | 0 | return new CallGraphDOTPrinter(); |
92 | 0 | } |