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