Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 1 | //===--- clang-wpa.cpp - clang whole program analyzer ---------------------===// |
| 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 tool reads a sequence of precompiled AST files, and do various |
| 11 | // cross translation unit analyses. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #include "clang/Basic/FileManager.h" |
| 16 | #include "clang/Basic/SourceManager.h" |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 17 | #include "clang/StaticAnalyzer/Frontend/CheckerRegistration.h" |
Ted Kremenek | 9b66371 | 2011-02-10 01:03:03 +0000 | [diff] [blame] | 18 | #include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h" |
| 19 | #include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" |
| 20 | #include "clang/StaticAnalyzer/Core/PathSensitive/TransferFuncs.h" |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 21 | #include "clang/StaticAnalyzer/Core/CheckerManager.h" |
Ted Kremenek | 8691e0b | 2011-01-18 04:22:19 +0000 | [diff] [blame] | 22 | #include "clang/StaticAnalyzer/Checkers/LocalCheckers.h" |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 23 | #include "clang/Frontend/ASTUnit.h" |
| 24 | #include "clang/Frontend/CompilerInstance.h" |
| 25 | #include "clang/Index/CallGraph.h" |
| 26 | #include "clang/Index/Indexer.h" |
| 27 | #include "clang/Index/TranslationUnit.h" |
| 28 | #include "clang/Index/DeclReferenceMap.h" |
| 29 | #include "clang/Index/SelectorMap.h" |
| 30 | #include "clang/Lex/Preprocessor.h" |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 31 | #include "clang/Basic/TargetInfo.h" |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 32 | #include "llvm/ADT/IntrusiveRefCntPtr.h" |
| 33 | #include "llvm/Support/CommandLine.h" |
| 34 | #include "llvm/Support/raw_ostream.h" |
| 35 | using namespace clang; |
| 36 | using namespace idx; |
| 37 | |
| 38 | static llvm::cl::list<std::string> |
| 39 | InputFilenames(llvm::cl::Positional, llvm::cl::desc("<input AST files>")); |
| 40 | |
| 41 | static llvm::cl::opt<bool> |
| 42 | ViewCallGraph("view-call-graph", llvm::cl::desc("Display the call graph.")); |
| 43 | |
| 44 | static llvm::cl::opt<std::string> |
| 45 | AnalyzeFunction("analyze-function", |
| 46 | llvm::cl::desc("Specify the entry function.")); |
| 47 | |
| 48 | namespace { |
| 49 | // A thin wrapper over ASTUnit implementing the TranslationUnit interface. |
| 50 | class ASTUnitTU : public TranslationUnit { |
| 51 | ASTUnit *AST; |
| 52 | DeclReferenceMap DeclRefMap; |
| 53 | SelectorMap SelMap; |
| 54 | |
| 55 | public: |
| 56 | ASTUnitTU(ASTUnit *ast) |
| 57 | : AST(ast), DeclRefMap(AST->getASTContext()), SelMap(AST->getASTContext()) { |
| 58 | } |
| 59 | |
| 60 | virtual ASTContext &getASTContext() { |
| 61 | return AST->getASTContext(); |
| 62 | } |
| 63 | |
| 64 | virtual Preprocessor &getPreprocessor() { |
| 65 | return AST->getPreprocessor(); |
| 66 | } |
| 67 | |
| 68 | virtual Diagnostic &getDiagnostic() { |
| 69 | return AST->getDiagnostics(); |
| 70 | } |
| 71 | |
| 72 | virtual DeclReferenceMap &getDeclReferenceMap() { |
| 73 | return DeclRefMap; |
| 74 | } |
| 75 | |
| 76 | virtual SelectorMap &getSelectorMap() { |
| 77 | return SelMap; |
| 78 | } |
| 79 | }; |
| 80 | } |
| 81 | |
| 82 | int main(int argc, char **argv) { |
| 83 | llvm::cl::ParseCommandLineOptions(argc, argv, "clang-wpa"); |
| 84 | std::vector<ASTUnit*> ASTUnits; |
| 85 | |
| 86 | Program Prog; |
| 87 | Indexer Idxer(Prog); |
| 88 | |
| 89 | if (InputFilenames.empty()) |
| 90 | return 0; |
| 91 | |
| 92 | DiagnosticOptions DiagOpts; |
| 93 | llvm::IntrusiveRefCntPtr<Diagnostic> Diags |
| 94 | = CompilerInstance::createDiagnostics(DiagOpts, argc, argv); |
| 95 | for (unsigned i = 0, e = InputFilenames.size(); i != e; ++i) { |
| 96 | const std::string &InFile = InputFilenames[i]; |
Ted Kremenek | 8691e0b | 2011-01-18 04:22:19 +0000 | [diff] [blame] | 97 | llvm::OwningPtr<ASTUnit> AST(ASTUnit::LoadFromASTFile(InFile, Diags, |
| 98 | FileSystemOptions(), |
| 99 | false, 0, 0, true)); |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 100 | if (!AST) |
| 101 | return 1; |
| 102 | |
| 103 | ASTUnits.push_back(AST.take()); |
| 104 | } |
| 105 | |
| 106 | if (ViewCallGraph) { |
| 107 | llvm::OwningPtr<CallGraph> CG; |
| 108 | CG.reset(new CallGraph(Prog)); |
| 109 | |
| 110 | for (unsigned i = 0, e = ASTUnits.size(); i != e; ++i) |
| 111 | CG->addTU(ASTUnits[i]->getASTContext()); |
| 112 | |
| 113 | CG->ViewCallGraph(); |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | if (AnalyzeFunction.empty()) |
| 118 | return 0; |
| 119 | |
| 120 | // Feed all ASTUnits to the Indexer. |
| 121 | for (unsigned i = 0, e = ASTUnits.size(); i != e; ++i) { |
| 122 | ASTUnitTU *TU = new ASTUnitTU(ASTUnits[i]); |
| 123 | Idxer.IndexAST(TU); |
| 124 | } |
| 125 | |
| 126 | Entity Ent = Entity::get(AnalyzeFunction, Prog); |
| 127 | FunctionDecl *FD; |
| 128 | TranslationUnit *TU; |
| 129 | llvm::tie(FD, TU) = Idxer.getDefinitionFor(Ent); |
| 130 | |
| 131 | if (!FD) |
| 132 | return 0; |
| 133 | |
| 134 | // Create an analysis engine. |
| 135 | Preprocessor &PP = TU->getPreprocessor(); |
| 136 | |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 137 | AnalyzerOptions Opts; |
| 138 | |
| 139 | // Hard code options and checkers for now. |
| 140 | |
| 141 | Opts.MaxNodes = 300000; |
| 142 | Opts.MaxLoop = 3; |
| 143 | Opts.InlineCall = true; |
| 144 | Opts.CFGAddImplicitDtors = true; |
| 145 | Opts.EagerlyTrimEGraph = true; |
| 146 | |
| 147 | Opts.CheckersControlList.push_back(std::make_pair("core", true)); |
| 148 | if (PP.getTargetInfo().getTriple().getOS() != llvm::Triple::Win32) |
| 149 | Opts.CheckersControlList.push_back(std::make_pair("unix", true)); |
| 150 | if (PP.getTargetInfo().getTriple().getVendor() == llvm::Triple::Apple) |
| 151 | Opts.CheckersControlList.push_back(std::make_pair("macosx", true)); |
| 152 | |
| 153 | // Checks to perform for Objective-C/Objective-C++. |
| 154 | if (PP.getLangOptions().ObjC1) |
| 155 | Opts.CheckersControlList.push_back(std::make_pair("cocoa", true)); |
| 156 | |
| 157 | llvm::OwningPtr<ento::CheckerManager> checkerMgr; |
Argyrios Kyrtzidis | 2e471a3 | 2011-02-23 07:19:14 +0000 | [diff] [blame] | 158 | checkerMgr.reset(ento::registerCheckers(Opts, PP.getLangOptions(), |
| 159 | PP.getDiagnostics())); |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 160 | |
Ted Kremenek | 8691e0b | 2011-01-18 04:22:19 +0000 | [diff] [blame] | 161 | using namespace clang::ento; |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 162 | AnalysisManager AMgr(TU->getASTContext(), PP.getDiagnostics(), |
| 163 | PP.getLangOptions(), /* PathDiagnostic */ 0, |
| 164 | CreateRegionStoreManager, |
Argyrios Kyrtzidis | 27af04b | 2011-02-15 16:54:12 +0000 | [diff] [blame] | 165 | CreateRangeConstraintManager, checkerMgr.get(), &Idxer, |
| 166 | Opts.MaxNodes, Opts.MaxLoop, |
| 167 | Opts.VisualizeEGDot, Opts.VisualizeEGUbi, |
| 168 | Opts.PurgeDead, Opts.EagerlyAssume, |
| 169 | Opts.TrimGraph, Opts.InlineCall, |
| 170 | Opts.UnoptimizedCFG, Opts.CFGAddImplicitDtors, |
| 171 | Opts.CFGAddInitializers, |
| 172 | Opts.EagerlyTrimEGraph); |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 173 | |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 174 | TransferFuncs* TF = MakeCFRefCountTF(AMgr.getASTContext(), /*GC*/false, |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 175 | AMgr.getLangOptions()); |
Argyrios Kyrtzidis | d2592a3 | 2010-12-22 18:53:44 +0000 | [diff] [blame] | 176 | ExprEngine Eng(AMgr, TF); |
Zhongxing Xu | 579855f | 2010-08-25 01:15:20 +0000 | [diff] [blame] | 177 | |
| 178 | Eng.ExecuteWorkList(AMgr.getStackFrame(FD, TU), AMgr.getMaxNodes()); |
| 179 | |
| 180 | return 0; |
| 181 | } |